diff options
Diffstat (limited to 'src/systemctl')
71 files changed, 10421 insertions, 0 deletions
diff --git a/src/systemctl/systemctl-add-dependency.c b/src/systemctl/systemctl-add-dependency.c new file mode 100644 index 0000000..2a0290d --- /dev/null +++ b/src/systemctl/systemctl-add-dependency.c @@ -0,0 +1,88 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "systemctl-add-dependency.h" +#include "systemctl-daemon-reload.h" +#include "systemctl-util.h" +#include "systemctl.h" + +int add_dependency(int argc, char *argv[], void *userdata) { + _cleanup_strv_free_ char **names = NULL; + _cleanup_free_ char *target = NULL; + const char *verb = argv[0]; + UnitFileChange *changes = NULL; + size_t n_changes = 0; + UnitDependency dep; + int r; + + if (!argv[1]) + return 0; + + r = unit_name_mangle_with_suffix(argv[1], "as target", + arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN, + ".target", &target); + if (r < 0) + return log_error_errno(r, "Failed to mangle unit name: %m"); + + r = mangle_names("as dependency", strv_skip(argv, 2), &names); + if (r < 0) + return r; + + if (streq(verb, "add-wants")) + dep = UNIT_WANTS; + else if (streq(verb, "add-requires")) + dep = UNIT_REQUIRES; + else + assert_not_reached("Unknown verb"); + + if (install_client_side()) { + r = unit_file_add_dependency(arg_scope, unit_file_flags_from_args(), arg_root, names, target, dep, &changes, &n_changes); + unit_file_dump_changes(r, "add dependency on", changes, n_changes, arg_quiet); + + if (r > 0) + r = 0; + } else { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL, *m = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_maybe(); + + r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "AddDependencyUnitFiles"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, names); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append(m, "ssbb", target, unit_dependency_to_string(dep), arg_runtime, arg_force); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_call(bus, m, 0, &error, &reply); + if (r < 0) + return log_error_errno(r, "Failed to add dependency: %s", bus_error_message(&error, r)); + + r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, &changes, &n_changes); + if (r < 0) + goto finish; + + if (arg_no_reload) { + r = 0; + goto finish; + } + + r = daemon_reload(argc, argv, userdata); + } + +finish: + unit_file_changes_free(changes, n_changes); + + return r; +} diff --git a/src/systemctl/systemctl-add-dependency.h b/src/systemctl/systemctl-add-dependency.h new file mode 100644 index 0000000..deb0da4 --- /dev/null +++ b/src/systemctl/systemctl-add-dependency.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int add_dependency(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-cancel-job.c b/src/systemctl/systemctl-cancel-job.c new file mode 100644 index 0000000..4c5203c --- /dev/null +++ b/src/systemctl/systemctl-cancel-job.c @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "parse-util.h" +#include "systemctl-cancel-job.h" +#include "systemctl-trivial-method.h" +#include "systemctl-util.h" +#include "systemctl.h" + +int cancel_job(int argc, char *argv[], void *userdata) { + sd_bus *bus; + char **name; + int r; + + if (argc <= 1) /* Shortcut to trivial_method() if no argument is given */ + return trivial_method(argc, argv, userdata); + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_maybe(); + + STRV_FOREACH(name, strv_skip(argv, 1)) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + uint32_t id; + int q; + + q = safe_atou32(*name, &id); + if (q < 0) + return log_error_errno(q, "Failed to parse job id \"%s\": %m", *name); + + q = bus_call_method(bus, bus_systemd_mgr, "CancelJob", &error, NULL, "u", id); + if (q < 0) { + log_error_errno(q, "Failed to cancel job %"PRIu32": %s", id, bus_error_message(&error, q)); + if (r == 0) + r = q; + } + } + + return r; +} diff --git a/src/systemctl/systemctl-cancel-job.h b/src/systemctl/systemctl-cancel-job.h new file mode 100644 index 0000000..75151d6 --- /dev/null +++ b/src/systemctl/systemctl-cancel-job.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int cancel_job(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-clean-or-freeze.c b/src/systemctl/systemctl-clean-or-freeze.c new file mode 100644 index 0000000..eca3a6d --- /dev/null +++ b/src/systemctl/systemctl-clean-or-freeze.c @@ -0,0 +1,101 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "bus-wait-for-units.h" +#include "systemctl-clean-or-freeze.h" +#include "systemctl-util.h" +#include "systemctl.h" + +int clean_or_freeze_unit(int argc, char *argv[], void *userdata) { + _cleanup_(bus_wait_for_units_freep) BusWaitForUnits *w = NULL; + _cleanup_strv_free_ char **names = NULL; + int r, ret = EXIT_SUCCESS; + char **name; + const char *method; + sd_bus *bus; + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + polkit_agent_open_maybe(); + + if (!arg_clean_what) { + arg_clean_what = strv_new("cache", "runtime"); + if (!arg_clean_what) + return log_oom(); + } + + r = expand_unit_names(bus, strv_skip(argv, 1), NULL, &names, NULL); + if (r < 0) + return log_error_errno(r, "Failed to expand names: %m"); + + if (!arg_no_block) { + r = bus_wait_for_units_new(bus, &w); + if (r < 0) + return log_error_errno(r, "Failed to allocate unit waiter: %m"); + } + + if (streq(argv[0], "clean")) + method = "CleanUnit"; + else if (streq(argv[0], "freeze")) + method = "FreezeUnit"; + else if (streq(argv[0], "thaw")) + method = "ThawUnit"; + else + assert_not_reached("Unhandled method"); + + STRV_FOREACH(name, names) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + + if (w) { + /* If we shall wait for the cleaning to complete, let's add a ref on the unit first */ + r = bus_call_method(bus, bus_systemd_mgr, "RefUnit", &error, NULL, "s", *name); + if (r < 0) { + log_error_errno(r, "Failed to add reference to unit %s: %s", *name, bus_error_message(&error, r)); + if (ret == EXIT_SUCCESS) + ret = r; + continue; + } + } + + r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, method); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append(m, "s", *name); + if (r < 0) + return bus_log_create_error(r); + + if (streq(method, "CleanUnit")) { + r = sd_bus_message_append_strv(m, arg_clean_what); + if (r < 0) + return bus_log_create_error(r); + } + + r = sd_bus_call(bus, m, 0, &error, NULL); + if (r < 0) { + log_error_errno(r, "Failed to %s unit %s: %s", argv[0], *name, bus_error_message(&error, r)); + if (ret == EXIT_SUCCESS) { + ret = r; + continue; + } + } + + if (w) { + r = bus_wait_for_units_add_unit(w, *name, BUS_WAIT_REFFED|BUS_WAIT_FOR_MAINTENANCE_END, NULL, NULL); + if (r < 0) + return log_error_errno(r, "Failed to watch unit %s: %m", *name); + } + } + + r = bus_wait_for_units_run(w); + if (r < 0) + return log_error_errno(r, "Failed to wait for units: %m"); + if (r == BUS_WAIT_FAILURE) + ret = EXIT_FAILURE; + + return ret; +} diff --git a/src/systemctl/systemctl-clean-or-freeze.h b/src/systemctl/systemctl-clean-or-freeze.h new file mode 100644 index 0000000..8e73f4e --- /dev/null +++ b/src/systemctl/systemctl-clean-or-freeze.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int clean_or_freeze_unit(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-compat-halt.c b/src/systemctl/systemctl-compat-halt.c new file mode 100644 index 0000000..8e41bd6 --- /dev/null +++ b/src/systemctl/systemctl-compat-halt.c @@ -0,0 +1,202 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <getopt.h> +#include <unistd.h> + +#include "sd-daemon.h" + +#include "alloc-util.h" +#include "pretty-print.h" +#include "process-util.h" +#include "reboot-util.h" +#include "systemctl-compat-halt.h" +#include "systemctl-compat-telinit.h" +#include "systemctl-logind.h" +#include "systemctl-util.h" +#include "systemctl.h" +#include "terminal-util.h" +#include "utmp-wtmp.h" + +static int halt_help(void) { + _cleanup_free_ char *link = NULL; + int r; + + r = terminal_urlify_man("halt", "8", &link); + if (r < 0) + return log_oom(); + + printf("%s [OPTIONS...]%s\n" + "\n%s%s the system.%s\n" + "\nOptions:\n" + " --help Show this help\n" + " --halt Halt the machine\n" + " -p --poweroff Switch off the machine\n" + " --reboot Reboot the machine\n" + " -f --force Force immediate halt/power-off/reboot\n" + " -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n" + " -d --no-wtmp Don't write wtmp record\n" + " --no-wall Don't send wall message before halt/power-off/reboot\n" + "\nSee the %s for details.\n" + , program_invocation_short_name + , arg_action == ACTION_REBOOT ? " [ARG]" : "" + , ansi_highlight() + , arg_action == ACTION_REBOOT ? "Reboot" : + arg_action == ACTION_POWEROFF ? "Power off" : + "Halt" + , ansi_normal() + , link + ); + + return 0; +} + +int halt_parse_argv(int argc, char *argv[]) { + enum { + ARG_HELP = 0x100, + ARG_HALT, + ARG_REBOOT, + ARG_NO_WALL + }; + + static const struct option options[] = { + { "help", no_argument, NULL, ARG_HELP }, + { "halt", no_argument, NULL, ARG_HALT }, + { "poweroff", no_argument, NULL, 'p' }, + { "reboot", no_argument, NULL, ARG_REBOOT }, + { "force", no_argument, NULL, 'f' }, + { "wtmp-only", no_argument, NULL, 'w' }, + { "no-wtmp", no_argument, NULL, 'd' }, + { "no-sync", no_argument, NULL, 'n' }, + { "no-wall", no_argument, NULL, ARG_NO_WALL }, + {} + }; + + int c, r, runlevel; + + assert(argc >= 0); + assert(argv); + + if (utmp_get_runlevel(&runlevel, NULL) >= 0) + if (IN_SET(runlevel, '0', '6')) + arg_force = 2; + + while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) + switch (c) { + + case ARG_HELP: + return halt_help(); + + case ARG_HALT: + arg_action = ACTION_HALT; + break; + + case 'p': + if (arg_action != ACTION_REBOOT) + arg_action = ACTION_POWEROFF; + break; + + case ARG_REBOOT: + arg_action = ACTION_REBOOT; + break; + + case 'f': + arg_force = 2; + break; + + case 'w': + arg_dry_run = true; + break; + + case 'd': + arg_no_wtmp = true; + break; + + case 'n': + arg_no_sync = true; + break; + + case ARG_NO_WALL: + arg_no_wall = true; + break; + + case 'i': + case 'h': + /* Compatibility nops */ + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + + if (arg_action == ACTION_REBOOT && (argc == optind || argc == optind + 1)) { + r = update_reboot_parameter_and_warn(argc == optind + 1 ? argv[optind] : NULL, false); + if (r < 0) + return r; + } else if (optind < argc) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Too many arguments."); + + return 1; +} + +int halt_main(void) { + int r; + + r = logind_check_inhibitors(arg_action); + if (r < 0) + return r; + + /* Delayed shutdown requested, and was successful */ + if (arg_when > 0 && logind_schedule_shutdown() == 0) + return 0; + + /* No delay, or logind failed or is not at all available */ + if (geteuid() != 0) { + if (arg_dry_run || arg_force > 0) { + (void) must_be_root(); + return -EPERM; + } + + /* Try logind if we are a normal user and no special mode applies. Maybe polkit allows us to + * shutdown the machine. */ + if (IN_SET(arg_action, ACTION_POWEROFF, ACTION_REBOOT, ACTION_HALT)) { + r = logind_reboot(arg_action); + if (r >= 0) + return r; + if (IN_SET(r, -EOPNOTSUPP, -EINPROGRESS)) + /* Requested operation is not supported on the local system or already in + * progress */ + return r; + + /* on all other errors, try low-level operation */ + } + } + + /* In order to minimize the difference between operation with and without logind, we explicitly + * enable non-blocking mode for this, as logind's shutdown operations are always non-blocking. */ + arg_no_block = true; + + if (!arg_dry_run && !arg_force) + return start_with_fallback(); + + assert(geteuid() == 0); + + if (!arg_no_wtmp) { + if (sd_booted() > 0) + log_debug("Not writing utmp record, assuming that systemd-update-utmp is used."); + else { + r = utmp_put_shutdown(); + if (r < 0) + log_warning_errno(r, "Failed to write utmp record: %m"); + } + } + + if (arg_dry_run) + return 0; + + r = halt_now(arg_action); + return log_error_errno(r, "Failed to reboot: %m"); +} diff --git a/src/systemctl/systemctl-compat-halt.h b/src/systemctl/systemctl-compat-halt.h new file mode 100644 index 0000000..85b9dda --- /dev/null +++ b/src/systemctl/systemctl-compat-halt.h @@ -0,0 +1,6 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int halt_parse_argv(int argc, char *argv[]); + +int halt_main(void); diff --git a/src/systemctl/systemctl-compat-runlevel.c b/src/systemctl/systemctl-compat-runlevel.c new file mode 100644 index 0000000..e05b1b4 --- /dev/null +++ b/src/systemctl/systemctl-compat-runlevel.c @@ -0,0 +1,82 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <getopt.h> + +#include "alloc-util.h" +#include "pretty-print.h" +#include "systemctl-compat-runlevel.h" +#include "systemctl.h" +#include "terminal-util.h" +#include "utmp-wtmp.h" + +static int runlevel_help(void) { + _cleanup_free_ char *link = NULL; + int r; + + r = terminal_urlify_man("runlevel", "8", &link); + if (r < 0) + return log_oom(); + + printf("%s [OPTIONS...]\n" + "\n%sPrints the previous and current runlevel of the init system.%s\n" + "\nOptions:\n" + " --help Show this help\n" + "\nSee the %s for details.\n" + , program_invocation_short_name + , ansi_highlight(), ansi_normal() + , link + ); + + return 0; +} + +int runlevel_parse_argv(int argc, char *argv[]) { + enum { + ARG_HELP = 0x100, + }; + + static const struct option options[] = { + { "help", no_argument, NULL, ARG_HELP }, + {} + }; + + int c; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) + switch (c) { + + case ARG_HELP: + return runlevel_help(); + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + + if (optind < argc) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Too many arguments."); + + return 1; +} + +int runlevel_main(void) { + int r, runlevel, previous; + + r = utmp_get_runlevel(&runlevel, &previous); + if (r < 0) { + puts("unknown"); + return r; + } + + printf("%c %c\n", + previous <= 0 ? 'N' : previous, + runlevel <= 0 ? 'N' : runlevel); + + return 0; +} diff --git a/src/systemctl/systemctl-compat-runlevel.h b/src/systemctl/systemctl-compat-runlevel.h new file mode 100644 index 0000000..658524b --- /dev/null +++ b/src/systemctl/systemctl-compat-runlevel.h @@ -0,0 +1,6 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int runlevel_parse_argv(int argc, char *argv[]); + +int runlevel_main(void); diff --git a/src/systemctl/systemctl-compat-shutdown.c b/src/systemctl/systemctl-compat-shutdown.c new file mode 100644 index 0000000..0c7d18b --- /dev/null +++ b/src/systemctl/systemctl-compat-shutdown.c @@ -0,0 +1,143 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <getopt.h> + +#include "alloc-util.h" +#include "pretty-print.h" +#include "systemctl-compat-shutdown.h" +#include "systemctl-sysv-compat.h" +#include "systemctl.h" +#include "terminal-util.h" + +static int shutdown_help(void) { + _cleanup_free_ char *link = NULL; + int r; + + r = terminal_urlify_man("shutdown", "8", &link); + if (r < 0) + return log_oom(); + + printf("%s [OPTIONS...] [TIME] [WALL...]\n" + "\n%sShut down the system.%s\n" + "\nOptions:\n" + " --help Show this help\n" + " -H --halt Halt the machine\n" + " -P --poweroff Power-off the machine\n" + " -r --reboot Reboot the machine\n" + " -h Equivalent to --poweroff, overridden by --halt\n" + " -k Don't halt/power-off/reboot, just send warnings\n" + " --no-wall Don't send wall message before halt/power-off/reboot\n" + " -c Cancel a pending shutdown\n" + "\nSee the %s for details.\n" + , program_invocation_short_name + , ansi_highlight(), ansi_normal() + , link + ); + + return 0; +} + +int shutdown_parse_argv(int argc, char *argv[]) { + enum { + ARG_HELP = 0x100, + ARG_NO_WALL + }; + + static const struct option options[] = { + { "help", no_argument, NULL, ARG_HELP }, + { "halt", no_argument, NULL, 'H' }, + { "poweroff", no_argument, NULL, 'P' }, + { "reboot", no_argument, NULL, 'r' }, + { "kexec", no_argument, NULL, 'K' }, /* not documented extension */ + { "no-wall", no_argument, NULL, ARG_NO_WALL }, + {} + }; + + char **wall = NULL; + int c, r; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "HPrhkKat:fFc", options, NULL)) >= 0) + switch (c) { + + case ARG_HELP: + return shutdown_help(); + + case 'H': + arg_action = ACTION_HALT; + break; + + case 'P': + arg_action = ACTION_POWEROFF; + break; + + case 'r': + if (kexec_loaded()) + arg_action = ACTION_KEXEC; + else + arg_action = ACTION_REBOOT; + break; + + case 'K': + arg_action = ACTION_KEXEC; + break; + + case 'h': + if (arg_action != ACTION_HALT) + arg_action = ACTION_POWEROFF; + break; + + case 'k': + arg_dry_run = true; + break; + + case ARG_NO_WALL: + arg_no_wall = true; + break; + + case 'a': + case 't': /* Note that we also ignore any passed argument to -t, not just the -t itself */ + case 'f': + case 'F': + /* Compatibility nops */ + break; + + case 'c': + arg_action = ACTION_CANCEL_SHUTDOWN; + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + + if (argc > optind && arg_action != ACTION_CANCEL_SHUTDOWN) { + r = parse_shutdown_time_spec(argv[optind], &arg_when); + if (r < 0) { + log_error("Failed to parse time specification: %s", argv[optind]); + return r; + } + } else + arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE; + + if (argc > optind && arg_action == ACTION_CANCEL_SHUTDOWN) + /* No time argument for shutdown cancel */ + wall = argv + optind; + else if (argc > optind + 1) + /* We skip the time argument */ + wall = argv + optind + 1; + + if (wall) { + arg_wall = strv_copy(wall); + if (!arg_wall) + return log_oom(); + } + + optind = argc; + + return 1; +} diff --git a/src/systemctl/systemctl-compat-shutdown.h b/src/systemctl/systemctl-compat-shutdown.h new file mode 100644 index 0000000..7acf941 --- /dev/null +++ b/src/systemctl/systemctl-compat-shutdown.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int shutdown_parse_argv(int argc, char *argv[]); diff --git a/src/systemctl/systemctl-compat-telinit.c b/src/systemctl/systemctl-compat-telinit.c new file mode 100644 index 0000000..148574d --- /dev/null +++ b/src/systemctl/systemctl-compat-telinit.c @@ -0,0 +1,152 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <getopt.h> + +#include "alloc-util.h" +#include "pretty-print.h" +#include "systemctl-compat-telinit.h" +#include "systemctl-daemon-reload.h" +#include "systemctl-start-unit.h" +#include "systemctl-sysv-compat.h" +#include "systemctl.h" +#include "terminal-util.h" + +static int telinit_help(void) { + _cleanup_free_ char *link = NULL; + int r; + + r = terminal_urlify_man("telinit", "8", &link); + if (r < 0) + return log_oom(); + + printf("%s [OPTIONS...] COMMAND\n\n" + "%sSend control commands to the init daemon.%s\n" + "\nCommands:\n" + " 0 Power-off the machine\n" + " 6 Reboot the machine\n" + " 2, 3, 4, 5 Start runlevelX.target unit\n" + " 1, s, S Enter rescue mode\n" + " q, Q Reload init daemon configuration\n" + " u, U Reexecute init daemon\n" + "\nOptions:\n" + " --help Show this help\n" + " --no-wall Don't send wall message before halt/power-off/reboot\n" + "\nSee the %s for details.\n" + , program_invocation_short_name + , ansi_highlight(), ansi_normal() + , link + ); + + return 0; +} + +int telinit_parse_argv(int argc, char *argv[]) { + enum { + ARG_HELP = 0x100, + ARG_NO_WALL + }; + + static const struct option options[] = { + { "help", no_argument, NULL, ARG_HELP }, + { "no-wall", no_argument, NULL, ARG_NO_WALL }, + {} + }; + + static const struct { + char from; + enum action to; + } table[] = { + { '0', ACTION_POWEROFF }, + { '6', ACTION_REBOOT }, + { '1', ACTION_RESCUE }, + { '2', ACTION_RUNLEVEL2 }, + { '3', ACTION_RUNLEVEL3 }, + { '4', ACTION_RUNLEVEL4 }, + { '5', ACTION_RUNLEVEL5 }, + { 's', ACTION_RESCUE }, + { 'S', ACTION_RESCUE }, + { 'q', ACTION_RELOAD }, + { 'Q', ACTION_RELOAD }, + { 'u', ACTION_REEXEC }, + { 'U', ACTION_REEXEC } + }; + + unsigned i; + int c; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) + switch (c) { + + case ARG_HELP: + return telinit_help(); + + case ARG_NO_WALL: + arg_no_wall = true; + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + + if (optind >= argc) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "%s: required argument missing.", + program_invocation_short_name); + + if (optind + 1 < argc) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Too many arguments."); + + if (strlen(argv[optind]) != 1) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Expected single character argument."); + + for (i = 0; i < ELEMENTSOF(table); i++) + if (table[i].from == argv[optind][0]) + break; + + if (i >= ELEMENTSOF(table)) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Unknown command '%s'.", argv[optind]); + + arg_action = table[i].to; + + optind++; + + return 1; +} + +int start_with_fallback(void) { + /* First, try systemd via D-Bus. */ + if (start_unit(0, NULL, NULL) == 0) + return 0; + +#if HAVE_SYSV_COMPAT + /* Nothing else worked, so let's try /dev/initctl */ + if (talk_initctl(action_to_runlevel()) > 0) + return 0; +#endif + + return log_error_errno(SYNTHETIC_ERRNO(EIO), + "Failed to talk to init daemon."); +} + +int reload_with_fallback(void) { + /* First, try systemd via D-Bus. */ + if (daemon_reload(0, NULL, NULL) >= 0) + return 0; + + /* Nothing else worked, so let's try signals */ + assert(IN_SET(arg_action, ACTION_RELOAD, ACTION_REEXEC)); + + if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) + return log_error_errno(errno, "kill() failed: %m"); + + return 0; +} diff --git a/src/systemctl/systemctl-compat-telinit.h b/src/systemctl/systemctl-compat-telinit.h new file mode 100644 index 0000000..1a2bcd4 --- /dev/null +++ b/src/systemctl/systemctl-compat-telinit.h @@ -0,0 +1,6 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int telinit_parse_argv(int argc, char *argv[]); +int start_with_fallback(void); +int reload_with_fallback(void); diff --git a/src/systemctl/systemctl-daemon-reload.c b/src/systemctl/systemctl-daemon-reload.c new file mode 100644 index 0000000..03ba908 --- /dev/null +++ b/src/systemctl/systemctl-daemon-reload.c @@ -0,0 +1,63 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "systemctl-daemon-reload.h" +#include "systemctl-util.h" +#include "systemctl.h" + +int daemon_reload(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + const char *method; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_maybe(); + + switch (arg_action) { + + case ACTION_RELOAD: + method = "Reload"; + break; + + case ACTION_REEXEC: + method = "Reexecute"; + break; + + case ACTION_SYSTEMCTL: + method = streq(argv[0], "daemon-reexec") ? "Reexecute" : + /* "daemon-reload" */ "Reload"; + break; + + default: + assert_not_reached("Unexpected action"); + } + + r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, method); + if (r < 0) + return bus_log_create_error(r); + + /* Note we use an extra-long timeout here. This is because a reload or reexec means generators are + * rerun which are timed out after DEFAULT_TIMEOUT_USEC. Let's use twice that time here, so that the + * generators can have their timeout, and for everything else there's the same time budget in + * place. */ + + r = sd_bus_call(bus, m, DEFAULT_TIMEOUT_USEC * 2, &error, NULL); + + /* On reexecution, we expect a disconnect, not a reply */ + if (IN_SET(r, -ETIMEDOUT, -ECONNRESET) && streq(method, "Reexecute")) + r = 0; + + if (r < 0 && arg_action == ACTION_SYSTEMCTL) + return log_error_errno(r, "Failed to reload daemon: %s", bus_error_message(&error, r)); + + /* Note that for the legacy commands (i.e. those with action != ACTION_SYSTEMCTL) we support + * fallbacks to the old ways of doing things, hence don't log any error in that case here. */ + + return r < 0 ? r : 0; +} diff --git a/src/systemctl/systemctl-daemon-reload.h b/src/systemctl/systemctl-daemon-reload.h new file mode 100644 index 0000000..a9fc007 --- /dev/null +++ b/src/systemctl/systemctl-daemon-reload.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int daemon_reload(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-edit.c b/src/systemctl/systemctl-edit.c new file mode 100644 index 0000000..4186ec3 --- /dev/null +++ b/src/systemctl/systemctl-edit.c @@ -0,0 +1,588 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "copy.h" +#include "fd-util.h" +#include "fileio.h" +#include "fs-util.h" +#include "mkdir.h" +#include "pager.h" +#include "path-util.h" +#include "pretty-print.h" +#include "process-util.h" +#include "selinux-util.h" +#include "stat-util.h" +#include "systemctl-daemon-reload.h" +#include "systemctl-edit.h" +#include "systemctl-util.h" +#include "systemctl.h" +#include "terminal-util.h" +#include "tmpfile-util.h" + +#define EDIT_MARKER_START "### Anything between here and the comment below will become the new contents of the file" +#define EDIT_MARKER_END "### Lines below this comment will be discarded" + +int cat(int argc, char *argv[], void *userdata) { + _cleanup_(hashmap_freep) Hashmap *cached_name_map = NULL, *cached_id_map = NULL; + _cleanup_(lookup_paths_free) LookupPaths lp = {}; + _cleanup_strv_free_ char **names = NULL; + char **name; + sd_bus *bus; + bool first = true; + int r, rc = 0; + + /* Include all units by default — i.e. continue as if the --all option was used */ + if (strv_isempty(arg_states)) + arg_all = true; + + if (arg_transport != BUS_TRANSPORT_LOCAL) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Cannot remotely cat units."); + + r = lookup_paths_init(&lp, arg_scope, 0, arg_root); + if (r < 0) + return log_error_errno(r, "Failed to determine unit paths: %m"); + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = expand_unit_names(bus, strv_skip(argv, 1), NULL, &names, NULL); + if (r < 0) + return log_error_errno(r, "Failed to expand names: %m"); + + r = maybe_extend_with_unit_dependencies(bus, &names); + if (r < 0) + return r; + + (void) pager_open(arg_pager_flags); + + STRV_FOREACH(name, names) { + _cleanup_free_ char *fragment_path = NULL; + _cleanup_strv_free_ char **dropin_paths = NULL; + + r = unit_find_paths(bus, *name, &lp, false, &cached_name_map, &cached_id_map, &fragment_path, &dropin_paths); + if (r == -ERFKILL) { + printf("%s# Unit %s is masked%s.\n", + ansi_highlight_magenta(), + *name, + ansi_normal()); + continue; + } + if (r == -EKEYREJECTED) { + printf("%s# Unit %s could not be loaded.%s\n", + ansi_highlight_magenta(), + *name, + ansi_normal()); + continue; + } + if (r < 0) + return r; + if (r == 0) { + /* Skip units which have no on-disk counterpart, but propagate the error to the + * user */ + rc = -ENOENT; + continue; + } + + if (first) + first = false; + else + puts(""); + + if (need_daemon_reload(bus, *name) > 0) /* ignore errors (<0), this is informational output */ + fprintf(stderr, + "%s# Warning: %s changed on disk, the version systemd has loaded is outdated.\n" + "%s# This output shows the current version of the unit's original fragment and drop-in files.\n" + "%s# If fragments or drop-ins were added or removed, they are not properly reflected in this output.\n" + "%s# Run 'systemctl%s daemon-reload' to reload units.%s\n", + ansi_highlight_red(), + *name, + ansi_highlight_red(), + ansi_highlight_red(), + ansi_highlight_red(), + arg_scope == UNIT_FILE_SYSTEM ? "" : " --user", + ansi_normal()); + + r = cat_files(fragment_path, dropin_paths, 0); + if (r < 0) + return r; + } + + return rc; +} + +static int create_edit_temp_file(const char *new_path, const char *original_path, char ** const original_unit_paths, char **ret_tmp_fn) { + _cleanup_free_ char *t = NULL; + int r; + + assert(new_path); + assert(ret_tmp_fn); + + r = tempfn_random(new_path, NULL, &t); + if (r < 0) + return log_error_errno(r, "Failed to determine temporary filename for \"%s\": %m", new_path); + + r = mkdir_parents_label(new_path, 0755); + if (r < 0) + return log_error_errno(r, "Failed to create directories for \"%s\": %m", new_path); + + if (original_path) { + r = mac_selinux_create_file_prepare(new_path, S_IFREG); + if (r < 0) + return r; + + r = copy_file(original_path, t, 0, 0644, 0, 0, COPY_REFLINK); + if (r == -ENOENT) { + r = touch(t); + mac_selinux_create_file_clear(); + if (r < 0) + return log_error_errno(r, "Failed to create temporary file \"%s\": %m", t); + } else { + mac_selinux_create_file_clear(); + if (r < 0) + return log_error_errno(r, "Failed to create temporary file for \"%s\": %m", new_path); + } + } else if (original_unit_paths) { + _cleanup_free_ char *new_contents = NULL; + _cleanup_fclose_ FILE *f = NULL; + char **path; + size_t size; + + r = mac_selinux_create_file_prepare(new_path, S_IFREG); + if (r < 0) + return r; + + f = fopen(t, "we"); + mac_selinux_create_file_clear(); + if (!f) + return log_error_errno(errno, "Failed to open \"%s\": %m", t); + + r = fchmod(fileno(f), 0644); + if (r < 0) + return log_error_errno(errno, "Failed to change mode of \"%s\": %m", t); + + r = read_full_file(new_path, &new_contents, &size); + if (r < 0 && r != -ENOENT) + return log_error_errno(r, "Failed to read \"%s\": %m", new_path); + + fprintf(f, + "### Editing %s\n" + EDIT_MARKER_START + "\n\n%s%s\n" + EDIT_MARKER_END, + new_path, + strempty(new_contents), + new_contents && endswith(new_contents, "\n") ? "" : "\n"); + + /* Add a comment with the contents of the original unit files */ + STRV_FOREACH(path, original_unit_paths) { + _cleanup_free_ char *contents = NULL; + + /* Skip the file that's being edited */ + if (path_equal(*path, new_path)) + continue; + + r = read_full_file(*path, &contents, &size); + if (r < 0) + return log_error_errno(r, "Failed to read \"%s\": %m", *path); + + fprintf(f, "\n\n### %s", *path); + if (!isempty(contents)) { + contents = strreplace(strstrip(contents), "\n", "\n# "); + if (!contents) + return log_oom(); + fprintf(f, "\n# %s", contents); + } + } + + r = fflush_and_check(f); + if (r < 0) + return log_error_errno(r, "Failed to create temporary file \"%s\": %m", t); + } + + *ret_tmp_fn = TAKE_PTR(t); + + return 0; +} + +static int get_file_to_edit( + const LookupPaths *paths, + const char *name, + char **ret_path) { + + _cleanup_free_ char *path = NULL, *run = NULL; + + assert(name); + assert(ret_path); + + path = path_join(paths->persistent_config, name); + if (!path) + return log_oom(); + + if (arg_runtime) { + run = path_join(paths->runtime_config, name); + if (!run) + return log_oom(); + } + + if (arg_runtime) { + if (access(path, F_OK) >= 0) + return log_error_errno(SYNTHETIC_ERRNO(EEXIST), + "Refusing to create \"%s\" because it would be overridden by \"%s\" anyway.", + run, path); + + *ret_path = TAKE_PTR(run); + } else + *ret_path = TAKE_PTR(path); + + return 0; +} + +static int unit_file_create_new( + const LookupPaths *paths, + const char *unit_name, + const char *suffix, + char ** const original_unit_paths, + char **ret_new_path, + char **ret_tmp_path) { + + _cleanup_free_ char *new_path = NULL, *tmp_path = NULL; + const char *ending; + int r; + + assert(unit_name); + assert(ret_new_path); + assert(ret_tmp_path); + + ending = strjoina(unit_name, suffix); + r = get_file_to_edit(paths, ending, &new_path); + if (r < 0) + return r; + + r = create_edit_temp_file(new_path, NULL, original_unit_paths, &tmp_path); + if (r < 0) + return r; + + *ret_new_path = TAKE_PTR(new_path); + *ret_tmp_path = TAKE_PTR(tmp_path); + + return 0; +} + +static int unit_file_create_copy( + const LookupPaths *paths, + const char *unit_name, + const char *fragment_path, + char **ret_new_path, + char **ret_tmp_path) { + + _cleanup_free_ char *new_path = NULL, *tmp_path = NULL; + int r; + + assert(fragment_path); + assert(unit_name); + assert(ret_new_path); + assert(ret_tmp_path); + + r = get_file_to_edit(paths, unit_name, &new_path); + if (r < 0) + return r; + + if (!path_equal(fragment_path, new_path) && access(new_path, F_OK) >= 0) { + char response; + + r = ask_char(&response, "yn", "\"%s\" already exists. Overwrite with \"%s\"? [(y)es, (n)o] ", new_path, fragment_path); + if (r < 0) + return r; + if (response != 'y') + return log_warning_errno(SYNTHETIC_ERRNO(EKEYREJECTED), "%s skipped.", unit_name); + } + + r = create_edit_temp_file(new_path, fragment_path, NULL, &tmp_path); + if (r < 0) + return r; + + *ret_new_path = TAKE_PTR(new_path); + *ret_tmp_path = TAKE_PTR(tmp_path); + + return 0; +} + +static int run_editor(char **paths) { + int r; + + assert(paths); + + r = safe_fork("(editor)", FORK_RESET_SIGNALS|FORK_DEATHSIG|FORK_RLIMIT_NOFILE_SAFE|FORK_LOG|FORK_WAIT, NULL); + if (r < 0) + return r; + if (r == 0) { + char **editor_args = NULL, **tmp_path, **original_path; + size_t n_editor_args = 0, i = 1, argc; + const char **args, *editor, *p; + + argc = strv_length(paths)/2 + 1; + + /* SYSTEMD_EDITOR takes precedence over EDITOR which takes precedence over VISUAL. If + * neither SYSTEMD_EDITOR nor EDITOR nor VISUAL are present, we try to execute well known + * editors. */ + editor = getenv("SYSTEMD_EDITOR"); + if (!editor) + editor = getenv("EDITOR"); + if (!editor) + editor = getenv("VISUAL"); + + if (!isempty(editor)) { + editor_args = strv_split(editor, WHITESPACE); + if (!editor_args) { + (void) log_oom(); + _exit(EXIT_FAILURE); + } + n_editor_args = strv_length(editor_args); + argc += n_editor_args - 1; + } + + args = newa(const char*, argc + 1); + + if (n_editor_args > 0) { + args[0] = editor_args[0]; + for (; i < n_editor_args; i++) + args[i] = editor_args[i]; + } + + STRV_FOREACH_PAIR(original_path, tmp_path, paths) + args[i++] = *tmp_path; + args[i] = NULL; + + if (n_editor_args > 0) + execvp(args[0], (char* const*) args); + + FOREACH_STRING(p, "editor", "nano", "vim", "vi") { + args[0] = p; + execvp(p, (char* const*) args); + /* We do not fail if the editor doesn't exist because we want to try each one of them + * before failing. */ + if (errno != ENOENT) { + log_error_errno(errno, "Failed to execute %s: %m", editor); + _exit(EXIT_FAILURE); + } + } + + log_error("Cannot edit unit(s), no editor available. Please set either $SYSTEMD_EDITOR, $EDITOR or $VISUAL."); + _exit(EXIT_FAILURE); + } + + return 0; +} + +static int find_paths_to_edit(sd_bus *bus, char **names, char ***paths) { + _cleanup_(hashmap_freep) Hashmap *cached_name_map = NULL, *cached_id_map = NULL; + _cleanup_(lookup_paths_free) LookupPaths lp = {}; + char **name; + int r; + + assert(names); + assert(paths); + + r = lookup_paths_init(&lp, arg_scope, 0, arg_root); + if (r < 0) + return r; + + STRV_FOREACH(name, names) { + _cleanup_free_ char *path = NULL, *new_path = NULL, *tmp_path = NULL, *tmp_name = NULL; + _cleanup_strv_free_ char **unit_paths = NULL; + const char *unit_name; + + r = unit_find_paths(bus, *name, &lp, false, &cached_name_map, &cached_id_map, &path, &unit_paths); + if (r == -EKEYREJECTED) { + /* If loading of the unit failed server side complete, then the server won't tell us + * the unit file path. In that case, find the file client side. */ + log_debug_errno(r, "Unit '%s' was not loaded correctly, retrying client-side.", *name); + r = unit_find_paths(bus, *name, &lp, true, &cached_name_map, &cached_id_map, &path, &unit_paths); + } + if (r == -ERFKILL) + return log_error_errno(r, "Unit '%s' masked, cannot edit.", *name); + if (r < 0) + return r; + + if (!path) { + if (!arg_force) { + log_info("Run 'systemctl edit%s --force --full %s' to create a new unit.", + arg_scope == UNIT_FILE_GLOBAL ? " --global" : + arg_scope == UNIT_FILE_USER ? " --user" : "", + *name); + return -ENOENT; + } + + /* Create a new unit from scratch */ + unit_name = *name; + r = unit_file_create_new(&lp, unit_name, + arg_full ? NULL : ".d/override.conf", + NULL, &new_path, &tmp_path); + } else { + unit_name = basename(path); + /* We follow unit aliases, but we need to propagate the instance */ + if (unit_name_is_valid(*name, UNIT_NAME_INSTANCE) && + unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) { + _cleanup_free_ char *instance = NULL; + + r = unit_name_to_instance(*name, &instance); + if (r < 0) + return r; + + r = unit_name_replace_instance(unit_name, instance, &tmp_name); + if (r < 0) + return r; + + unit_name = tmp_name; + } + + if (arg_full) + r = unit_file_create_copy(&lp, unit_name, path, &new_path, &tmp_path); + else { + r = strv_prepend(&unit_paths, path); + if (r < 0) + return log_oom(); + + r = unit_file_create_new(&lp, unit_name, ".d/override.conf", unit_paths, &new_path, &tmp_path); + } + } + if (r < 0) + return r; + + r = strv_push_pair(paths, new_path, tmp_path); + if (r < 0) + return log_oom(); + + new_path = tmp_path = NULL; + } + + return 0; +} + +static int trim_edit_markers(const char *path) { + _cleanup_free_ char *contents = NULL; + char *contents_start = NULL; + const char *contents_end = NULL; + size_t size; + int r; + + /* Trim out the lines between the two markers */ + r = read_full_file(path, &contents, &size); + if (r < 0) + return log_error_errno(r, "Failed to read temporary file \"%s\": %m", path); + + contents_start = strstr(contents, EDIT_MARKER_START); + if (contents_start) + contents_start += strlen(EDIT_MARKER_START); + else + contents_start = contents; + + contents_end = strstr(contents_start, EDIT_MARKER_END); + if (contents_end) + strshorten(contents_start, contents_end - contents_start); + + contents_start = strstrip(contents_start); + + /* Write new contents if the trimming actually changed anything */ + if (strlen(contents) != size) { + r = write_string_file(path, contents_start, WRITE_STRING_FILE_CREATE | WRITE_STRING_FILE_TRUNCATE | WRITE_STRING_FILE_AVOID_NEWLINE); + if (r < 0) + return log_error_errno(r, "Failed to modify temporary file \"%s\": %m", path); + } + + return 0; +} + +int edit(int argc, char *argv[], void *userdata) { + _cleanup_(lookup_paths_free) LookupPaths lp = {}; + _cleanup_strv_free_ char **names = NULL; + _cleanup_strv_free_ char **paths = NULL; + char **original, **tmp; + sd_bus *bus; + int r; + + if (!on_tty()) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Cannot edit units if not on a tty."); + + if (arg_transport != BUS_TRANSPORT_LOCAL) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Cannot edit units remotely."); + + r = lookup_paths_init(&lp, arg_scope, 0, arg_root); + if (r < 0) + return log_error_errno(r, "Failed to determine unit paths: %m"); + + r = mac_selinux_init(); + if (r < 0) + return r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = expand_unit_names(bus, strv_skip(argv, 1), NULL, &names, NULL); + if (r < 0) + return log_error_errno(r, "Failed to expand names: %m"); + + STRV_FOREACH(tmp, names) { + r = unit_is_masked(bus, &lp, *tmp); + if (r < 0) + return r; + if (r > 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Cannot edit %s: unit is masked.", *tmp); + } + + r = find_paths_to_edit(bus, names, &paths); + if (r < 0) + return r; + + if (strv_isempty(paths)) + return -ENOENT; + + r = run_editor(paths); + if (r < 0) + goto end; + + STRV_FOREACH_PAIR(original, tmp, paths) { + /* If the temporary file is empty we ignore it. This allows the user to cancel the + * modification. */ + r = trim_edit_markers(*tmp); + if (r < 0) + continue; + + if (null_or_empty_path(*tmp)) { + log_warning("Editing \"%s\" canceled: temporary file is empty.", *original); + continue; + } + + r = rename(*tmp, *original); + if (r < 0) { + r = log_error_errno(errno, "Failed to rename \"%s\" to \"%s\": %m", *tmp, *original); + goto end; + } + } + + r = 0; + + if (!arg_no_reload && !install_client_side()) + r = daemon_reload(argc, argv, userdata); + +end: + STRV_FOREACH_PAIR(original, tmp, paths) { + (void) unlink(*tmp); + + /* Removing empty dropin dirs */ + if (!arg_full) { + _cleanup_free_ char *dir; + + dir = dirname_malloc(*original); + if (!dir) + return log_oom(); + + /* No need to check if the dir is empty, rmdir does nothing if it is not the case. */ + (void) rmdir(dir); + } + } + + return r; +} diff --git a/src/systemctl/systemctl-edit.h b/src/systemctl/systemctl-edit.h new file mode 100644 index 0000000..fe7e4dc --- /dev/null +++ b/src/systemctl/systemctl-edit.h @@ -0,0 +1,5 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int cat(int argc, char *argv[], void *userdata); +int edit(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-enable.c b/src/systemctl/systemctl-enable.c new file mode 100644 index 0000000..8f053ca --- /dev/null +++ b/src/systemctl/systemctl-enable.c @@ -0,0 +1,284 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "locale-util.h" +#include "path-util.h" +#include "systemctl-daemon-reload.h" +#include "systemctl-enable.h" +#include "systemctl-start-unit.h" +#include "systemctl-sysv-compat.h" +#include "systemctl-util.h" +#include "systemctl.h" + +static int normalize_filenames(char **names) { + char **u; + int r; + + STRV_FOREACH(u, names) + if (!path_is_absolute(*u)) { + char* normalized_path; + + if (!isempty(arg_root)) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Non-absolute paths are not allowed when --root is used: %s", + *u); + + if (!strchr(*u,'/')) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Link argument does contain at least one directory separator: %s", + *u); + + r = path_make_absolute_cwd(*u, &normalized_path); + if (r < 0) + return r; + + free_and_replace(*u, normalized_path); + } + + return 0; +} + +static int normalize_names(char **names, bool warn_if_path) { + char **u; + bool was_path = false; + + STRV_FOREACH(u, names) { + int r; + + if (!is_path(*u)) + continue; + + r = free_and_strdup(u, basename(*u)); + if (r < 0) + return log_error_errno(r, "Failed to normalize unit file path: %m"); + + was_path = true; + } + + if (warn_if_path && was_path) + log_warning("Warning: Can't execute disable on the unit file path. Proceeding with the unit name."); + + return 0; +} + +int enable_unit(int argc, char *argv[], void *userdata) { + _cleanup_strv_free_ char **names = NULL; + const char *verb = argv[0]; + UnitFileChange *changes = NULL; + size_t n_changes = 0; + int carries_install_info = -1; + bool ignore_carries_install_info = arg_quiet; + int r; + + if (!argv[1]) + return 0; + + r = mangle_names("to enable", strv_skip(argv, 1), &names); + if (r < 0) + return r; + + r = enable_sysv_units(verb, names); + if (r < 0) + return r; + + /* If the operation was fully executed by the SysV compat, let's finish early */ + if (strv_isempty(names)) { + if (arg_no_reload || install_client_side()) + return 0; + return daemon_reload(argc, argv, userdata); + } + + if (streq(verb, "disable")) { + r = normalize_names(names, true); + if (r < 0) + return r; + } + + if (streq(verb, "link")) { + r = normalize_filenames(names); + if (r < 0) + return r; + } + + if (install_client_side()) { + UnitFileFlags flags; + + flags = unit_file_flags_from_args(); + if (streq(verb, "enable")) { + r = unit_file_enable(arg_scope, flags, arg_root, names, &changes, &n_changes); + carries_install_info = r; + } else if (streq(verb, "disable")) + r = unit_file_disable(arg_scope, flags, arg_root, names, &changes, &n_changes); + else if (streq(verb, "reenable")) { + r = unit_file_reenable(arg_scope, flags, arg_root, names, &changes, &n_changes); + carries_install_info = r; + } else if (streq(verb, "link")) + r = unit_file_link(arg_scope, flags, arg_root, names, &changes, &n_changes); + else if (streq(verb, "preset")) { + r = unit_file_preset(arg_scope, flags, arg_root, names, arg_preset_mode, &changes, &n_changes); + } else if (streq(verb, "mask")) + r = unit_file_mask(arg_scope, flags, arg_root, names, &changes, &n_changes); + else if (streq(verb, "unmask")) + r = unit_file_unmask(arg_scope, flags, arg_root, names, &changes, &n_changes); + else if (streq(verb, "revert")) + r = unit_file_revert(arg_scope, arg_root, names, &changes, &n_changes); + else + assert_not_reached("Unknown verb"); + + unit_file_dump_changes(r, verb, changes, n_changes, arg_quiet); + if (r < 0) + goto finish; + r = 0; + } else { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL, *m = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + bool expect_carries_install_info = false; + bool send_runtime = true, send_force = true, send_preset_mode = false; + const char *method; + sd_bus *bus; + + if (STR_IN_SET(verb, "mask", "unmask")) { + char **name; + _cleanup_(lookup_paths_free) LookupPaths lp = {}; + + r = lookup_paths_init(&lp, arg_scope, 0, arg_root); + if (r < 0) + return r; + + STRV_FOREACH(name, names) { + r = unit_exists(&lp, *name); + if (r < 0) + return r; + if (r == 0) + log_notice("Unit %s does not exist, proceeding anyway.", *name); + } + } + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_maybe(); + + if (streq(verb, "enable")) { + method = "EnableUnitFiles"; + expect_carries_install_info = true; + } else if (streq(verb, "disable")) { + method = "DisableUnitFiles"; + send_force = false; + } else if (streq(verb, "reenable")) { + method = "ReenableUnitFiles"; + expect_carries_install_info = true; + } else if (streq(verb, "link")) + method = "LinkUnitFiles"; + else if (streq(verb, "preset")) { + + if (arg_preset_mode != UNIT_FILE_PRESET_FULL) { + method = "PresetUnitFilesWithMode"; + send_preset_mode = true; + } else + method = "PresetUnitFiles"; + + expect_carries_install_info = true; + ignore_carries_install_info = true; + } else if (streq(verb, "mask")) + method = "MaskUnitFiles"; + else if (streq(verb, "unmask")) { + method = "UnmaskUnitFiles"; + send_force = false; + } else if (streq(verb, "revert")) { + method = "RevertUnitFiles"; + send_runtime = send_force = false; + } else + assert_not_reached("Unknown verb"); + + r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, method); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, names); + if (r < 0) + return bus_log_create_error(r); + + if (send_preset_mode) { + r = sd_bus_message_append(m, "s", unit_file_preset_mode_to_string(arg_preset_mode)); + if (r < 0) + return bus_log_create_error(r); + } + + if (send_runtime) { + r = sd_bus_message_append(m, "b", arg_runtime); + if (r < 0) + return bus_log_create_error(r); + } + + if (send_force) { + r = sd_bus_message_append(m, "b", arg_force); + if (r < 0) + return bus_log_create_error(r); + } + + r = sd_bus_call(bus, m, 0, &error, &reply); + if (r < 0) + return log_error_errno(r, "Failed to %s unit: %s", verb, bus_error_message(&error, r)); + + if (expect_carries_install_info) { + r = sd_bus_message_read(reply, "b", &carries_install_info); + if (r < 0) + return bus_log_parse_error(r); + } + + r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, &changes, &n_changes); + if (r < 0) + goto finish; + + /* Try to reload if enabled */ + if (!arg_no_reload) + r = daemon_reload(argc, argv, userdata); + else + r = 0; + } + + if (carries_install_info == 0 && !ignore_carries_install_info) + log_notice("The unit files have no installation config (WantedBy=, RequiredBy=, Also=,\n" + "Alias= settings in the [Install] section, and DefaultInstance= for template\n" + "units). This means they are not meant to be enabled using systemctl.\n" + " \n" /* trick: the space is needed so that the line does not get stripped from output */ + "Possible reasons for having this kind of units are:\n" + "%1$s A unit may be statically enabled by being symlinked from another unit's\n" + " .wants/ or .requires/ directory.\n" + "%1$s A unit's purpose may be to act as a helper for some other unit which has\n" + " a requirement dependency on it.\n" + "%1$s A unit may be started when needed via activation (socket, path, timer,\n" + " D-Bus, udev, scripted systemctl call, ...).\n" + "%1$s In case of template units, the unit is meant to be enabled with some\n" + " instance name specified.", + special_glyph(SPECIAL_GLYPH_BULLET)); + + if (arg_now && STR_IN_SET(argv[0], "enable", "disable", "mask")) { + sd_bus *bus; + size_t len, i; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + goto finish; + + len = strv_length(names); + { + char *new_args[len + 2]; + + new_args[0] = (char*) (streq(argv[0], "enable") ? "start" : "stop"); + for (i = 0; i < len; i++) + new_args[i + 1] = basename(names[i]); + new_args[i + 1] = NULL; + + r = start_unit(len + 1, new_args, userdata); + } + } + +finish: + unit_file_changes_free(changes, n_changes); + + return r; +} diff --git a/src/systemctl/systemctl-enable.h b/src/systemctl/systemctl-enable.h new file mode 100644 index 0000000..43f60e7 --- /dev/null +++ b/src/systemctl/systemctl-enable.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int enable_unit(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-is-active.c b/src/systemctl/systemctl-is-active.c new file mode 100644 index 0000000..3d99b0d --- /dev/null +++ b/src/systemctl/systemctl-is-active.c @@ -0,0 +1,62 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "pretty-print.h" +#include "syslog-util.h" +#include "systemctl-is-active.h" +#include "systemctl-sysv-compat.h" +#include "systemctl-util.h" +#include "systemctl.h" + +static int check_unit_generic(int code, const UnitActiveState good_states[], int nb_states, char **args) { + _cleanup_strv_free_ char **names = NULL; + UnitActiveState active_state; + sd_bus *bus; + char **name; + int r, i; + bool found = false; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = expand_unit_names(bus, args, NULL, &names, NULL); + if (r < 0) + return log_error_errno(r, "Failed to expand names: %m"); + + STRV_FOREACH(name, names) { + r = get_state_one_unit(bus, *name, &active_state); + if (r < 0) + return r; + + if (!arg_quiet) + puts(unit_active_state_to_string(active_state)); + + for (i = 0; i < nb_states; ++i) + if (good_states[i] == active_state) + found = true; + } + + /* use the given return code for the case that we won't find + * any unit which matches the list */ + return found ? 0 : code; +} + +int check_unit_active(int argc, char *argv[], void *userdata) { + static const UnitActiveState states[] = { + UNIT_ACTIVE, + UNIT_RELOADING, + }; + + /* According to LSB: 3, "program is not running" */ + return check_unit_generic(EXIT_PROGRAM_NOT_RUNNING, states, ELEMENTSOF(states), strv_skip(argv, 1)); +} + +int check_unit_failed(int argc, char *argv[], void *userdata) { + static const UnitActiveState states[] = { + UNIT_FAILED, + }; + + return check_unit_generic(EXIT_PROGRAM_DEAD_AND_PID_EXISTS, states, ELEMENTSOF(states), strv_skip(argv, 1)); +} diff --git a/src/systemctl/systemctl-is-active.h b/src/systemctl/systemctl-is-active.h new file mode 100644 index 0000000..9a5238e --- /dev/null +++ b/src/systemctl/systemctl-is-active.h @@ -0,0 +1,5 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int check_unit_active(int argc, char *argv[], void *userdata); +int check_unit_failed(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-is-enabled.c b/src/systemctl/systemctl-is-enabled.c new file mode 100644 index 0000000..babd590 --- /dev/null +++ b/src/systemctl/systemctl-is-enabled.c @@ -0,0 +1,138 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "systemctl-is-enabled.h" +#include "systemctl-sysv-compat.h" +#include "systemctl-util.h" +#include "systemctl.h" + +static int show_installation_targets_client_side(const char *name) { + UnitFileChange *changes = NULL; + size_t n_changes = 0, i; + UnitFileFlags flags; + char **p; + int r; + + p = STRV_MAKE(name); + flags = UNIT_FILE_DRY_RUN | + (arg_runtime ? UNIT_FILE_RUNTIME : 0); + + r = unit_file_disable(UNIT_FILE_SYSTEM, flags, NULL, p, &changes, &n_changes); + if (r < 0) + return log_error_errno(r, "Failed to get file links for %s: %m", name); + + for (i = 0; i < n_changes; i++) + if (changes[i].type == UNIT_FILE_UNLINK) + printf(" %s\n", changes[i].path); + + return 0; +} + +static int show_installation_targets(sd_bus *bus, const char *name) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + const char *link; + int r; + + r = bus_call_method(bus, bus_systemd_mgr, "GetUnitFileLinks", &error, &reply, "sb", name, arg_runtime); + if (r < 0) + return log_error_errno(r, "Failed to get unit file links for %s: %s", name, bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "s"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(reply, "s", &link)) > 0) + printf(" %s\n", link); + + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + return 0; +} + +int unit_is_enabled(int argc, char *argv[], void *userdata) { + _cleanup_strv_free_ char **names = NULL; + bool enabled; + char **name; + int r; + + r = mangle_names("to check", strv_skip(argv, 1), &names); + if (r < 0) + return r; + + r = enable_sysv_units(argv[0], names); + if (r < 0) + return r; + + enabled = r > 0; + + if (install_client_side()) { + STRV_FOREACH(name, names) { + UnitFileState state; + + r = unit_file_get_state(arg_scope, arg_root, *name, &state); + if (r < 0) + return log_error_errno(r, "Failed to get unit file state for %s: %m", *name); + + if (IN_SET(state, + UNIT_FILE_ENABLED, + UNIT_FILE_ENABLED_RUNTIME, + UNIT_FILE_STATIC, + UNIT_FILE_ALIAS, + UNIT_FILE_INDIRECT, + UNIT_FILE_GENERATED)) + enabled = true; + + if (!arg_quiet) { + puts(unit_file_state_to_string(state)); + if (arg_full) { + r = show_installation_targets_client_side(*name); + if (r < 0) + return r; + } + } + } + + r = 0; + } else { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + STRV_FOREACH(name, names) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + const char *s; + + r = bus_call_method(bus, bus_systemd_mgr, "GetUnitFileState", &error, &reply, "s", *name); + if (r < 0) + return log_error_errno(r, "Failed to get unit file state for %s: %s", *name, bus_error_message(&error, r)); + + r = sd_bus_message_read(reply, "s", &s); + if (r < 0) + return bus_log_parse_error(r); + + if (STR_IN_SET(s, "enabled", "enabled-runtime", "static", "alias", "indirect", "generated")) + enabled = true; + + if (!arg_quiet) { + puts(s); + if (arg_full) { + r = show_installation_targets(bus, *name); + if (r < 0) + return r; + } + } + } + } + + return enabled ? EXIT_SUCCESS : EXIT_FAILURE; +} diff --git a/src/systemctl/systemctl-is-enabled.h b/src/systemctl/systemctl-is-enabled.h new file mode 100644 index 0000000..5cb9e5c --- /dev/null +++ b/src/systemctl/systemctl-is-enabled.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int unit_is_enabled(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-is-system-running.c b/src/systemctl/systemctl-is-system-running.c new file mode 100644 index 0000000..ecebf0d --- /dev/null +++ b/src/systemctl/systemctl-is-system-running.c @@ -0,0 +1,84 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "sd-event.h" +#include "sd-daemon.h" + +#include "systemctl-util.h" +#include "systemctl-is-system-running.h" +#include "virt.h" +#include "systemctl.h" +#include "bus-util.h" +#include "bus-locator.h" +#include "bus-error.h" + +static int match_startup_finished(sd_bus_message *m, void *userdata, sd_bus_error *error) { + char **state = userdata; + int r; + + assert(state); + + r = bus_get_property_string(sd_bus_message_get_bus(m), bus_systemd_mgr, "SystemState", NULL, state); + + sd_event_exit(sd_bus_get_event(sd_bus_message_get_bus(m)), r); + return 0; +} + +int is_system_running(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_slot_unrefp) sd_bus_slot *slot_startup_finished = NULL; + _cleanup_(sd_event_unrefp) sd_event* event = NULL; + _cleanup_free_ char *state = NULL; + sd_bus *bus; + int r; + + if (running_in_chroot() > 0 || (arg_transport == BUS_TRANSPORT_LOCAL && !sd_booted())) { + if (!arg_quiet) + puts("offline"); + return EXIT_FAILURE; + } + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + if (arg_wait) { + r = sd_event_default(&event); + if (r >= 0) + r = sd_bus_attach_event(bus, event, 0); + if (r >= 0) + r = bus_match_signal_async( + bus, + &slot_startup_finished, + bus_systemd_mgr, + "StartupFinished", + match_startup_finished, NULL, &state); + if (r < 0) { + log_warning_errno(r, "Failed to request match for StartupFinished: %m"); + arg_wait = false; + } + } + + r = bus_get_property_string(bus, bus_systemd_mgr, "SystemState", &error, &state); + if (r < 0) { + log_warning_errno(r, "Failed to query system state: %s", bus_error_message(&error, r)); + + if (!arg_quiet) + puts("unknown"); + return EXIT_FAILURE; + } + + if (arg_wait && STR_IN_SET(state, "initializing", "starting")) { + r = sd_event_loop(event); + if (r < 0) { + log_warning_errno(r, "Failed to get property from event loop: %m"); + if (!arg_quiet) + puts("unknown"); + return EXIT_FAILURE; + } + } + + if (!arg_quiet) + puts(state); + + return streq(state, "running") ? EXIT_SUCCESS : EXIT_FAILURE; +} diff --git a/src/systemctl/systemctl-is-system-running.h b/src/systemctl/systemctl-is-system-running.h new file mode 100644 index 0000000..3d7e9fb --- /dev/null +++ b/src/systemctl/systemctl-is-system-running.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int is_system_running(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-kill.c b/src/systemctl/systemctl-kill.c new file mode 100644 index 0000000..810aad1 --- /dev/null +++ b/src/systemctl/systemctl-kill.c @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "systemctl-kill.h" +#include "systemctl-util.h" +#include "systemctl.h" + +int kill_unit(int argc, char *argv[], void *userdata) { + _cleanup_strv_free_ char **names = NULL; + char *kill_who = NULL, **name; + sd_bus *bus; + int r, q; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_maybe(); + + if (!arg_kill_who) + arg_kill_who = "all"; + + /* --fail was specified */ + if (streq(arg_job_mode, "fail")) + kill_who = strjoina(arg_kill_who, "-fail"); + + r = expand_unit_names(bus, strv_skip(argv, 1), NULL, &names, NULL); + if (r < 0) + return log_error_errno(r, "Failed to expand names: %m"); + + STRV_FOREACH(name, names) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + + q = bus_call_method( + bus, + bus_systemd_mgr, + "KillUnit", + &error, + NULL, + "ssi", *name, kill_who ? kill_who : arg_kill_who, arg_signal); + if (q < 0) { + log_error_errno(q, "Failed to kill unit %s: %s", *name, bus_error_message(&error, q)); + if (r == 0) + r = q; + } + } + + return r; +} diff --git a/src/systemctl/systemctl-kill.h b/src/systemctl/systemctl-kill.h new file mode 100644 index 0000000..a42d4f1 --- /dev/null +++ b/src/systemctl/systemctl-kill.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int kill_unit(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-list-dependencies.c b/src/systemctl/systemctl-list-dependencies.c new file mode 100644 index 0000000..821998e --- /dev/null +++ b/src/systemctl/systemctl-list-dependencies.c @@ -0,0 +1,174 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "locale-util.h" +#include "sort-util.h" +#include "special.h" +#include "systemctl-list-dependencies.h" +#include "systemctl-util.h" +#include "systemctl.h" +#include "terminal-util.h" + +static int list_dependencies_print(const char *name, int level, unsigned branches, bool last) { + _cleanup_free_ char *n = NULL; + size_t max_len = MAX(columns(),20u); + size_t len = 0; + int i; + + if (!arg_plain) { + + for (i = level - 1; i >= 0; i--) { + len += 2; + if (len > max_len - 3 && !arg_full) { + printf("%s...\n",max_len % 2 ? "" : " "); + return 0; + } + printf("%s", special_glyph(branches & (1 << i) ? SPECIAL_GLYPH_TREE_VERTICAL : SPECIAL_GLYPH_TREE_SPACE)); + } + len += 2; + + if (len > max_len - 3 && !arg_full) { + printf("%s...\n",max_len % 2 ? "" : " "); + return 0; + } + + printf("%s", special_glyph(last ? SPECIAL_GLYPH_TREE_RIGHT : SPECIAL_GLYPH_TREE_BRANCH)); + } + + if (arg_full) { + printf("%s\n", name); + return 0; + } + + n = ellipsize(name, max_len-len, 100); + if (!n) + return log_oom(); + + printf("%s\n", n); + return 0; +} + +static int list_dependencies_compare(char * const *a, char * const *b) { + if (unit_name_to_type(*a) == UNIT_TARGET && unit_name_to_type(*b) != UNIT_TARGET) + return 1; + if (unit_name_to_type(*a) != UNIT_TARGET && unit_name_to_type(*b) == UNIT_TARGET) + return -1; + + return strcasecmp(*a, *b); +} + +static int list_dependencies_one( + sd_bus *bus, + const char *name, + int level, + char ***units, + unsigned branches) { + + _cleanup_strv_free_ char **deps = NULL; + char **c; + int r; + + assert(bus); + assert(name); + assert(units); + + r = strv_extend(units, name); + if (r < 0) + return log_oom(); + + r = unit_get_dependencies(bus, name, &deps); + if (r < 0) + return r; + + typesafe_qsort(deps, strv_length(deps), list_dependencies_compare); + + STRV_FOREACH(c, deps) { + if (strv_contains(*units, *c)) { + if (!arg_plain) { + printf(" "); + r = list_dependencies_print("...", level + 1, (branches << 1) | (c[1] == NULL ? 0 : 1), 1); + if (r < 0) + return r; + } + continue; + } + + if (arg_plain) + printf(" "); + else { + UnitActiveState active_state = _UNIT_ACTIVE_STATE_INVALID; + const char *on; + + (void) get_state_one_unit(bus, *c, &active_state); + + switch (active_state) { + case UNIT_ACTIVE: + case UNIT_RELOADING: + case UNIT_ACTIVATING: + on = ansi_highlight_green(); + break; + + case UNIT_INACTIVE: + case UNIT_DEACTIVATING: + on = ansi_normal(); + break; + + default: + on = ansi_highlight_red(); + break; + } + + printf("%s%s%s ", on, special_glyph(SPECIAL_GLYPH_BLACK_CIRCLE), ansi_normal()); + } + + r = list_dependencies_print(*c, level, branches, c[1] == NULL); + if (r < 0) + return r; + + if (arg_all || unit_name_to_type(*c) == UNIT_TARGET) { + r = list_dependencies_one(bus, *c, level + 1, units, (branches << 1) | (c[1] == NULL ? 0 : 1)); + if (r < 0) + return r; + } + } + + if (!arg_plain) + strv_remove(*units, name); + + return 0; +} + +int list_dependencies(int argc, char *argv[], void *userdata) { + _cleanup_strv_free_ char **units = NULL, **done = NULL; + char **u, **patterns; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + patterns = strv_skip(argv, 1); + if (strv_isempty(patterns)) { + units = strv_new(SPECIAL_DEFAULT_TARGET); + if (!units) + return log_oom(); + } else { + r = expand_unit_names(bus, patterns, NULL, &units, NULL); + if (r < 0) + return log_error_errno(r, "Failed to expand names: %m"); + } + + (void) pager_open(arg_pager_flags); + + STRV_FOREACH(u, units) { + if (u != units) + puts(""); + + puts(*u); + r = list_dependencies_one(bus, *u, 0, &done, 0); + if (r < 0) + return r; + } + + return 0; +} diff --git a/src/systemctl/systemctl-list-dependencies.h b/src/systemctl/systemctl-list-dependencies.h new file mode 100644 index 0000000..7246570 --- /dev/null +++ b/src/systemctl/systemctl-list-dependencies.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int list_dependencies(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-list-jobs.c b/src/systemctl/systemctl-list-jobs.c new file mode 100644 index 0000000..8b028c0 --- /dev/null +++ b/src/systemctl/systemctl-list-jobs.c @@ -0,0 +1,176 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "locale-util.h" +#include "systemctl-list-jobs.h" +#include "systemctl-util.h" +#include "systemctl.h" +#include "terminal-util.h" + +static int output_waiting_jobs(sd_bus *bus, Table *table, uint32_t id, const char *method, const char *prefix) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + const char *name, *type; + uint32_t other_id; + int r; + + assert(bus); + + r = bus_call_method(bus, bus_systemd_mgr, method, &error, &reply, "u", id); + if (r < 0) + return log_debug_errno(r, "Failed to get waiting jobs for job %" PRIu32, id); + + r = sd_bus_message_enter_container(reply, 'a', "(usssoo)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(reply, "(usssoo)", &other_id, &name, &type, NULL, NULL, NULL)) > 0) { + _cleanup_free_ char *row = NULL; + int rc; + + if (asprintf(&row, "%s %u (%s/%s)", prefix, other_id, name, type) < 0) + return log_oom(); + + rc = table_add_many(table, + TABLE_STRING, special_glyph(SPECIAL_GLYPH_TREE_RIGHT), + TABLE_STRING, row, + TABLE_EMPTY, + TABLE_EMPTY); + if (rc < 0) + return table_log_add_error(r); + } + + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + return 0; +} + +struct job_info { + uint32_t id; + const char *name, *type, *state; +}; + +static int output_jobs_list(sd_bus *bus, const struct job_info* jobs, unsigned n, bool skipped) { + _cleanup_(table_unrefp) Table *table = NULL; + const struct job_info *j; + const char *on, *off; + int r; + + assert(n == 0 || jobs); + + if (n == 0) { + if (!arg_no_legend) { + on = ansi_highlight_green(); + off = ansi_normal(); + + printf("%sNo jobs %s.%s\n", on, skipped ? "listed" : "running", off); + } + return 0; + } + + (void) pager_open(arg_pager_flags); + + table = table_new("job", "unit", "type", "state"); + if (!table) + return log_oom(); + + table_set_header(table, !arg_no_legend); + if (arg_full) + table_set_width(table, 0); + + (void) table_set_empty_string(table, "-"); + + for (j = jobs; j < jobs + n; j++) { + if (streq(j->state, "running")) + on = ansi_highlight(); + else + on = ""; + + r = table_add_many(table, + TABLE_UINT, j->id, + TABLE_STRING, j->name, + TABLE_SET_COLOR, on, + TABLE_STRING, j->type, + TABLE_STRING, j->state, + TABLE_SET_COLOR, on); + if (r < 0) + return table_log_add_error(r); + + if (arg_jobs_after) + output_waiting_jobs(bus, table, j->id, "GetJobAfter", "\twaiting for job"); + if (arg_jobs_before) + output_waiting_jobs(bus, table, j->id, "GetJobBefore", "\tblocking job"); + } + + r = table_print(table, NULL); + if (r < 0) + return log_error_errno(r, "Failed to print the table: %m"); + + if (!arg_no_legend) { + on = ansi_highlight(); + off = ansi_normal(); + + printf("\n%s%u jobs listed%s.\n", on, n, off); + } + + return 0; +} + +static bool output_show_job(struct job_info *job, char **patterns) { + return strv_fnmatch_or_empty(patterns, job->name, FNM_NOESCAPE); +} + +int list_jobs(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_free_ struct job_info *jobs = NULL; + const char *name, *type, *state; + bool skipped = false; + size_t size = 0; + unsigned c = 0; + sd_bus *bus; + uint32_t id; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = bus_call_method(bus, bus_systemd_mgr, "ListJobs", &error, &reply, NULL); + if (r < 0) + return log_error_errno(r, "Failed to list jobs: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, 'a', "(usssoo)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(reply, "(usssoo)", &id, &name, &type, &state, NULL, NULL)) > 0) { + struct job_info job = { id, name, type, state }; + + if (!output_show_job(&job, strv_skip(argv, 1))) { + skipped = true; + continue; + } + + if (!GREEDY_REALLOC(jobs, size, c + 1)) + return log_oom(); + + jobs[c++] = job; + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + (void) pager_open(arg_pager_flags); + + return output_jobs_list(bus, jobs, c, skipped); +} diff --git a/src/systemctl/systemctl-list-jobs.h b/src/systemctl/systemctl-list-jobs.h new file mode 100644 index 0000000..aa49696 --- /dev/null +++ b/src/systemctl/systemctl-list-jobs.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int list_jobs(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-list-machines.c b/src/systemctl/systemctl-list-machines.c new file mode 100644 index 0000000..48d0e8b --- /dev/null +++ b/src/systemctl/systemctl-list-machines.c @@ -0,0 +1,246 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <unistd.h> + +#include "sd-login.h" + +#include "bus-map-properties.h" +#include "hostname-util.h" +#include "locale-util.h" +#include "memory-util.h" +#include "sort-util.h" +#include "systemctl-list-machines.h" +#include "systemctl-util.h" +#include "systemctl.h" +#include "terminal-util.h" + +const struct bus_properties_map machine_info_property_map[] = { + { "SystemState", "s", NULL, offsetof(struct machine_info, state) }, + { "NJobs", "u", NULL, offsetof(struct machine_info, n_jobs) }, + { "NFailedUnits", "u", NULL, offsetof(struct machine_info, n_failed_units) }, + { "ControlGroup", "s", NULL, offsetof(struct machine_info, control_group) }, + { "UserspaceTimestamp", "t", NULL, offsetof(struct machine_info, timestamp) }, + {} +}; + +void machine_info_clear(struct machine_info *info) { + assert(info); + + free(info->name); + free(info->state); + free(info->control_group); + zero(*info); +} + +static void free_machines_list(struct machine_info *machine_infos, int n) { + int i; + + if (!machine_infos) + return; + + for (i = 0; i < n; i++) + machine_info_clear(&machine_infos[i]); + + free(machine_infos); +} + +static int compare_machine_info(const struct machine_info *a, const struct machine_info *b) { + int r; + + r = CMP(b->is_host, a->is_host); + if (r != 0) + return r; + + return strcasecmp(a->name, b->name); +} + +static int get_machine_properties(sd_bus *bus, struct machine_info *mi) { + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *container = NULL; + int r; + + assert(mi); + + if (!bus) { + r = sd_bus_open_system_machine(&container, mi->name); + if (r < 0) + return r; + + bus = container; + } + + r = bus_map_all_properties( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + machine_info_property_map, + BUS_MAP_STRDUP, + NULL, + NULL, + mi); + if (r < 0) + return r; + + return 0; +} + +static bool output_show_machine(const char *name, char **patterns) { + return strv_fnmatch_or_empty(patterns, name, FNM_NOESCAPE); +} + +static int get_machine_list( + sd_bus *bus, + struct machine_info **_machine_infos, + char **patterns) { + + struct machine_info *machine_infos = NULL; + _cleanup_strv_free_ char **m = NULL; + _cleanup_free_ char *hn = NULL; + size_t sz = 0; + char **i; + int c = 0, r; + + hn = gethostname_malloc(); + if (!hn) + return log_oom(); + + if (output_show_machine(hn, patterns)) { + if (!GREEDY_REALLOC0(machine_infos, sz, c+1)) + return log_oom(); + + machine_infos[c].is_host = true; + machine_infos[c].name = TAKE_PTR(hn); + + (void) get_machine_properties(bus, &machine_infos[c]); + c++; + } + + r = sd_get_machine_names(&m); + if (r < 0) + return log_error_errno(r, "Failed to get machine list: %m"); + + STRV_FOREACH(i, m) { + _cleanup_free_ char *class = NULL; + + if (!output_show_machine(*i, patterns)) + continue; + + sd_machine_get_class(*i, &class); + if (!streq_ptr(class, "container")) + continue; + + if (!GREEDY_REALLOC0(machine_infos, sz, c+1)) { + free_machines_list(machine_infos, c); + return log_oom(); + } + + machine_infos[c].is_host = false; + machine_infos[c].name = strdup(*i); + if (!machine_infos[c].name) { + free_machines_list(machine_infos, c); + return log_oom(); + } + + (void) get_machine_properties(NULL, &machine_infos[c]); + c++; + } + + *_machine_infos = machine_infos; + return c; +} + +static int output_machines_list(struct machine_info *machine_infos, unsigned n) { + _cleanup_(table_unrefp) Table *table = NULL; + struct machine_info *m; + bool state_missing = false; + int r; + + assert(machine_infos || n == 0); + + table = table_new("", "name", "state", "failed", "jobs"); + if (!table) + return log_oom(); + + table_set_header(table, !arg_no_legend); + if (arg_plain) { + /* Hide the 'glyph' column when --plain is requested */ + r = table_hide_column_from_display(table, 0); + if (r < 0) + return log_error_errno(r, "Failed to hide column: %m"); + } + if (arg_full) + table_set_width(table, 0); + + (void) table_set_empty_string(table, "-"); + + for (m = machine_infos; m < machine_infos + n; m++) { + _cleanup_free_ char *mname = NULL; + const char *on_state = "", *on_failed = ""; + bool circle = false; + + if (streq_ptr(m->state, "degraded")) { + on_state = ansi_highlight_red(); + circle = true; + } else if (!streq_ptr(m->state, "running")) { + on_state = ansi_highlight_yellow(); + circle = true; + } + + if (m->n_failed_units > 0) + on_failed = ansi_highlight_red(); + else + on_failed = ""; + + if (!m->state) + state_missing = true; + + if (m->is_host) + mname = strjoin(strna(m->name), " (host)"); + + r = table_add_many(table, + TABLE_STRING, circle ? special_glyph(SPECIAL_GLYPH_BLACK_CIRCLE) : " ", + TABLE_SET_COLOR, on_state, + TABLE_STRING, m->is_host ? mname : strna(m->name), + TABLE_STRING, strna(m->state), + TABLE_SET_COLOR, on_state, + TABLE_UINT32, m->n_failed_units, + TABLE_SET_COLOR, on_failed, + TABLE_UINT32, m->n_jobs); + if (r < 0) + return table_log_add_error(r); + } + + r = output_table(table); + if (r < 0) + return r; + + if (!arg_no_legend) { + printf("\n"); + if (state_missing && geteuid() != 0) + printf("Notice: some information only available to privileged users was not shown.\n"); + printf("%u machines listed.\n", n); + } + + return 0; +} + +int list_machines(int argc, char *argv[], void *userdata) { + struct machine_info *machine_infos = NULL; + sd_bus *bus; + int r, rc; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = get_machine_list(bus, &machine_infos, strv_skip(argv, 1)); + if (r < 0) + return r; + + (void) pager_open(arg_pager_flags); + + typesafe_qsort(machine_infos, r, compare_machine_info); + rc = output_machines_list(machine_infos, r); + free_machines_list(machine_infos, r); + + return rc; +} diff --git a/src/systemctl/systemctl-list-machines.h b/src/systemctl/systemctl-list-machines.h new file mode 100644 index 0000000..4a33e2b --- /dev/null +++ b/src/systemctl/systemctl-list-machines.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#include <inttypes.h> +#include <stdbool.h> + +#include "bus-map-properties.h" +#include "time-util.h" + +int list_machines(int argc, char *argv[], void *userdata); + +struct machine_info { + bool is_host; + char *name; + char *state; + char *control_group; + uint32_t n_failed_units; + uint32_t n_jobs; + usec_t timestamp; +}; + +void machine_info_clear(struct machine_info *info); + +extern const struct bus_properties_map machine_info_property_map[]; diff --git a/src/systemctl/systemctl-list-unit-files.c b/src/systemctl/systemctl-list-unit-files.c new file mode 100644 index 0000000..e1bf876 --- /dev/null +++ b/src/systemctl/systemctl-list-unit-files.c @@ -0,0 +1,275 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "sort-util.h" +#include "systemctl-list-unit-files.h" +#include "systemctl-util.h" +#include "systemctl.h" +#include "terminal-util.h" + +static int compare_unit_file_list(const UnitFileList *a, const UnitFileList *b) { + const char *d1, *d2; + + d1 = strrchr(a->path, '.'); + d2 = strrchr(b->path, '.'); + + if (d1 && d2) { + int r; + + r = strcasecmp(d1, d2); + if (r != 0) + return r; + } + + return strcasecmp(basename(a->path), basename(b->path)); +} + +static bool output_show_unit_file(const UnitFileList *u, char **states, char **patterns) { + assert(u); + + if (!strv_fnmatch_or_empty(patterns, basename(u->path), FNM_NOESCAPE)) + return false; + + if (!strv_isempty(arg_types)) { + const char *dot; + + dot = strrchr(u->path, '.'); + if (!dot) + return false; + + if (!strv_find(arg_types, dot+1)) + return false; + } + + if (!strv_isempty(states) && + !strv_find(states, unit_file_state_to_string(u->state))) + return false; + + return true; +} + +static int output_unit_file_list(const UnitFileList *units, unsigned c) { + _cleanup_(table_unrefp) Table *table = NULL; + _cleanup_(unit_file_presets_freep) UnitFilePresets presets = {}; + int r; + + table = table_new("unit file", "state", "vendor preset"); + if (!table) + return log_oom(); + + table_set_header(table, !arg_no_legend); + if (arg_full) + table_set_width(table, 0); + + (void) table_set_empty_string(table, "-"); + + for (const UnitFileList *u = units; u < units + c; u++) { + const char *on_underline = NULL, *on_unit_color = NULL, *id; + bool underline; + + underline = u + 1 < units + c && + !streq(unit_type_suffix(u->path), unit_type_suffix((u + 1)->path)); + + if (underline) + on_underline = ansi_underline(); + + if (IN_SET(u->state, + UNIT_FILE_MASKED, + UNIT_FILE_MASKED_RUNTIME, + UNIT_FILE_DISABLED, + UNIT_FILE_BAD)) + on_unit_color = underline ? ansi_highlight_red_underline() : ansi_highlight_red(); + else if (IN_SET(u->state, + UNIT_FILE_ENABLED, + UNIT_FILE_ALIAS)) + on_unit_color = underline ? ansi_highlight_green_underline() : ansi_highlight_green(); + else + on_unit_color = on_underline; + + id = basename(u->path); + + r = table_add_many(table, + TABLE_STRING, id, + TABLE_SET_BOTH_COLORS, strempty(on_underline), + TABLE_STRING, unit_file_state_to_string(u->state), + TABLE_SET_BOTH_COLORS, strempty(on_unit_color)); + if (r < 0) + return table_log_add_error(r); + + if (show_preset_for_state(u->state)) { + const char *unit_preset_str, *on_preset_color; + + r = unit_file_query_preset(arg_scope, arg_root, id, &presets); + if (r < 0) { + unit_preset_str = "n/a"; + on_preset_color = underline ? on_underline : ansi_normal(); + } else if (r == 0) { + unit_preset_str = "disabled"; + on_preset_color = underline ? ansi_highlight_red_underline() : ansi_highlight_red(); + } else { + unit_preset_str = "enabled"; + on_preset_color = underline ? ansi_highlight_green_underline() : ansi_highlight_green(); + } + + r = table_add_many(table, + TABLE_STRING, unit_preset_str, + TABLE_SET_BOTH_COLORS, strempty(on_preset_color)); + } else + r = table_add_many(table, + TABLE_EMPTY, + TABLE_SET_BOTH_COLORS, underline ? ansi_grey_underline() : ansi_grey()); + if (r < 0) + return table_log_add_error(r); + } + + r = output_table(table); + if (r < 0) + return r; + + if (!arg_no_legend) + printf("\n%u unit files listed.\n", c); + + return 0; +} + +int list_unit_files(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_free_ UnitFileList *units = NULL; + UnitFileList *unit; + size_t size = 0; + unsigned c = 0; + const char *state; + char *path; + int r; + bool fallback = false; + + if (install_client_side()) { + Hashmap *h; + UnitFileList *u; + unsigned n_units; + + h = hashmap_new(&string_hash_ops); + if (!h) + return log_oom(); + + r = unit_file_get_list(arg_scope, arg_root, h, arg_states, strv_skip(argv, 1)); + if (r < 0) { + unit_file_list_free(h); + return log_error_errno(r, "Failed to get unit file list: %m"); + } + + n_units = hashmap_size(h); + + units = new(UnitFileList, n_units ?: 1); /* avoid malloc(0) */ + if (!units) { + unit_file_list_free(h); + return log_oom(); + } + + HASHMAP_FOREACH(u, h) { + if (!output_show_unit_file(u, NULL, NULL)) + continue; + + units[c++] = *u; + free(u); + } + + assert(c <= n_units); + hashmap_free(h); + + r = 0; + } else { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "ListUnitFilesByPatterns"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, arg_states); + if (r < 0) + return bus_log_create_error(r); + + if (arg_with_dependencies) { + _cleanup_strv_free_ char **names_with_deps = NULL; + + r = append_unit_dependencies(bus, strv_skip(argv, 1), &names_with_deps); + if (r < 0) + return log_error_errno(r, "Failed to append unit dependencies: %m"); + + r = sd_bus_message_append_strv(m, names_with_deps); + if (r < 0) + return bus_log_create_error(r); + } else { + r = sd_bus_message_append_strv(m, strv_skip(argv, 1)); + if (r < 0) + return bus_log_create_error(r); + } + + r = sd_bus_call(bus, m, 0, &error, &reply); + if (r < 0 && sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_METHOD)) { + /* Fallback to legacy ListUnitFiles method */ + fallback = true; + log_debug_errno(r, "Failed to list unit files: %s Falling back to ListUnitsFiles method.", bus_error_message(&error, r)); + m = sd_bus_message_unref(m); + sd_bus_error_free(&error); + + r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "ListUnitFiles"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_call(bus, m, 0, &error, &reply); + } + if (r < 0) + return log_error_errno(r, "Failed to list unit files: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(reply, "(ss)", &path, &state)) > 0) { + + if (!GREEDY_REALLOC(units, size, c + 1)) + return log_oom(); + + units[c] = (struct UnitFileList) { + path, + unit_file_state_from_string(state) + }; + + if (output_show_unit_file(&units[c], + fallback ? arg_states : NULL, + fallback ? strv_skip(argv, 1) : NULL)) + c++; + + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + } + + (void) pager_open(arg_pager_flags); + + typesafe_qsort(units, c, compare_unit_file_list); + r = output_unit_file_list(units, c); + if (r < 0) + return r; + + if (install_client_side()) + for (unit = units; unit < units + c; unit++) + free(unit->path); + + if (c == 0) + return -ENOENT; + + return 0; +} diff --git a/src/systemctl/systemctl-list-unit-files.h b/src/systemctl/systemctl-list-unit-files.h new file mode 100644 index 0000000..387233e --- /dev/null +++ b/src/systemctl/systemctl-list-unit-files.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int list_unit_files(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-list-units.c b/src/systemctl/systemctl-list-units.c new file mode 100644 index 0000000..c7a91ba --- /dev/null +++ b/src/systemctl/systemctl-list-units.c @@ -0,0 +1,771 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "sd-login.h" + +#include "bus-error.h" +#include "format-table.h" +#include "locale-util.h" +#include "set.h" +#include "sort-util.h" +#include "systemctl-list-units.h" +#include "systemctl-util.h" +#include "systemctl.h" +#include "terminal-util.h" + +static void message_set_freep(Set **set) { + set_free_with_destructor(*set, sd_bus_message_unref); +} + +static int get_unit_list_recursive( + sd_bus *bus, + char **patterns, + UnitInfo **ret_unit_infos, + Set **ret_replies, + char ***ret_machines) { + + _cleanup_free_ UnitInfo *unit_infos = NULL; + _cleanup_(message_set_freep) Set *replies; + sd_bus_message *reply; + int c, r; + + assert(bus); + assert(ret_replies); + assert(ret_unit_infos); + assert(ret_machines); + + replies = set_new(NULL); + if (!replies) + return log_oom(); + + c = get_unit_list(bus, NULL, patterns, &unit_infos, 0, &reply); + if (c < 0) + return c; + + r = set_put(replies, reply); + if (r < 0) { + sd_bus_message_unref(reply); + return log_oom(); + } + + if (arg_recursive) { + _cleanup_strv_free_ char **machines = NULL; + char **i; + + r = sd_get_machine_names(&machines); + if (r < 0) + return log_error_errno(r, "Failed to get machine names: %m"); + + STRV_FOREACH(i, machines) { + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *container = NULL; + int k; + + r = sd_bus_open_system_machine(&container, *i); + if (r < 0) { + log_warning_errno(r, "Failed to connect to container %s, ignoring: %m", *i); + continue; + } + + k = get_unit_list(container, *i, patterns, &unit_infos, c, &reply); + if (k < 0) + return k; + + c = k; + + r = set_put(replies, reply); + if (r < 0) { + sd_bus_message_unref(reply); + return log_oom(); + } + } + + *ret_machines = TAKE_PTR(machines); + } else + *ret_machines = NULL; + + *ret_unit_infos = TAKE_PTR(unit_infos); + *ret_replies = TAKE_PTR(replies); + + return c; +} + +static int output_units_list(const UnitInfo *unit_infos, unsigned c) { + _cleanup_(table_unrefp) Table *table = NULL; + unsigned job_count = 0; + int r; + + table = table_new("", "unit", "load", "active", "sub", "job", "description"); + if (!table) + return log_oom(); + + table_set_header(table, !arg_no_legend); + if (arg_plain) { + /* Hide the 'glyph' column when --plain is requested */ + r = table_hide_column_from_display(table, 0); + if (r < 0) + return log_error_errno(r, "Failed to hide column: %m"); + } + if (arg_full) + table_set_width(table, 0); + + (void) table_set_empty_string(table, "-"); + + for (const UnitInfo *u = unit_infos; unit_infos && u - unit_infos < c; u++) { + _cleanup_free_ char *j = NULL; + const char *on_underline = "", *on_loaded = "", *on_active = ""; + const char *on_circle = "", *id; + bool circle = false, underline = false; + + if (u + 1 < unit_infos + c && + !streq(unit_type_suffix(u->id), unit_type_suffix((u + 1)->id))) { + on_underline = ansi_underline(); + underline = true; + } + + if (STR_IN_SET(u->load_state, "error", "not-found", "bad-setting", "masked") && !arg_plain) { + on_circle = underline ? ansi_highlight_yellow_underline() : ansi_highlight_yellow(); + circle = true; + on_loaded = underline ? ansi_highlight_red_underline() : ansi_highlight_red(); + } else if (streq(u->active_state, "failed") && !arg_plain) { + on_circle = underline ? ansi_highlight_red_underline() : ansi_highlight_red(); + circle = true; + on_active = underline ? ansi_highlight_red_underline() : ansi_highlight_red(); + } else { + on_circle = on_underline; + on_active = on_underline; + on_loaded = on_underline; + } + + if (u->machine) { + j = strjoin(u->machine, ":", u->id); + if (!j) + return log_oom(); + + id = j; + } else + id = u->id; + + r = table_add_many(table, + TABLE_STRING, circle ? special_glyph(SPECIAL_GLYPH_BLACK_CIRCLE) : " ", + TABLE_SET_BOTH_COLORS, on_circle, + TABLE_STRING, id, + TABLE_SET_BOTH_COLORS, on_active, + TABLE_STRING, u->load_state, + TABLE_SET_BOTH_COLORS, on_loaded, + TABLE_STRING, u->active_state, + TABLE_SET_BOTH_COLORS, on_active, + TABLE_STRING, u->sub_state, + TABLE_SET_BOTH_COLORS, on_active, + TABLE_STRING, u->job_id ? u->job_type: "", + TABLE_SET_BOTH_COLORS, on_underline, + TABLE_STRING, u->description, + TABLE_SET_BOTH_COLORS, on_underline); + if (r < 0) + return table_log_add_error(r); + + if (u->job_id != 0) + job_count++; + } + + if (job_count == 0) { + /* There's no data in the JOB column, so let's hide it */ + r = table_hide_column_from_display(table, 5); + if (r < 0) + return log_error_errno(r, "Failed to hide column: %m"); + } + + r = output_table(table); + if (r < 0) + return r; + + if (!arg_no_legend) { + const char *on, *off; + size_t records = table_get_rows(table) - 1; + + if (records > 0) { + puts("\n" + "LOAD = Reflects whether the unit definition was properly loaded.\n" + "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n" + "SUB = The low-level unit activation state, values depend on unit type."); + if (job_count > 0) + puts("JOB = Pending job for the unit.\n"); + on = ansi_highlight(); + off = ansi_normal(); + } else { + on = ansi_highlight_red(); + off = ansi_normal(); + } + + if (arg_all || strv_contains(arg_states, "inactive")) + printf("%s%zu loaded units listed.%s\n" + "To show all installed unit files use 'systemctl list-unit-files'.\n", + on, records, off); + else if (!arg_states) + printf("%s%zu loaded units listed.%s Pass --all to see loaded but inactive units, too.\n" + "To show all installed unit files use 'systemctl list-unit-files'.\n", + on, records, off); + else + printf("%zu loaded units listed.\n", records); + } + + return 0; +} + +int list_units(int argc, char *argv[], void *userdata) { + _cleanup_free_ UnitInfo *unit_infos = NULL; + _cleanup_(message_set_freep) Set *replies = NULL; + _cleanup_strv_free_ char **machines = NULL; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + (void) pager_open(arg_pager_flags); + + if (arg_with_dependencies) { + _cleanup_strv_free_ char **names = NULL; + + r = append_unit_dependencies(bus, strv_skip(argv, 1), &names); + if (r < 0) + return r; + + r = get_unit_list_recursive(bus, names, &unit_infos, &replies, &machines); + if (r < 0) + return r; + } else { + r = get_unit_list_recursive(bus, strv_skip(argv, 1), &unit_infos, &replies, &machines); + if (r < 0) + return r; + } + + typesafe_qsort(unit_infos, r, unit_info_compare); + return output_units_list(unit_infos, r); +} + +static int get_triggered_units( + sd_bus *bus, + const char* path, + char*** ret) { + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + int r; + + assert(bus); + assert(path); + assert(ret); + + r = sd_bus_get_property_strv( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.systemd1.Unit", + "Triggers", + &error, + ret); + if (r < 0) + return log_error_errno(r, "Failed to determine triggers: %s", bus_error_message(&error, r)); + + return 0; +} + +static int get_listening( + sd_bus *bus, + const char* unit_path, + char*** listening) { + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + const char *type, *path; + int r, n = 0; + + r = sd_bus_get_property( + bus, + "org.freedesktop.systemd1", + unit_path, + "org.freedesktop.systemd1.Socket", + "Listen", + &error, + &reply, + "a(ss)"); + if (r < 0) + return log_error_errno(r, "Failed to get list of listening sockets: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(reply, "(ss)", &type, &path)) > 0) { + + r = strv_extend(listening, type); + if (r < 0) + return log_oom(); + + r = strv_extend(listening, path); + if (r < 0) + return log_oom(); + + n++; + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + return n; +} + +struct socket_info { + const char *machine; + const char* id; + + char* type; + char* path; + + /* Note: triggered is a list here, although it almost certainly will always be one + * unit. Nevertheless, dbus API allows for multiple values, so let's follow that. */ + char** triggered; + + /* The strv above is shared. free is set only in the first one. */ + bool own_triggered; +}; + +static int socket_info_compare(const struct socket_info *a, const struct socket_info *b) { + int r; + + assert(a); + assert(b); + + r = strcasecmp_ptr(a->machine, b->machine); + if (r != 0) + return r; + + r = strcmp(a->path, b->path); + if (r != 0) + return r; + + return strcmp(a->type, b->type); +} + +static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) { + _cleanup_(table_unrefp) Table *table = NULL; + struct socket_info *s; + const char *on, *off; + int r; + + table = table_new("listen", "type", "unit", "activates"); + if (!table) + return log_oom(); + + if (!arg_show_types) { + /* Hide the second (TYPE) column */ + r = table_set_display(table, (size_t) 0, (size_t) 2, (size_t) 3, (size_t) -1); + if (r < 0) + return log_error_errno(r, "Failed to set columns to display: %m"); + } + + table_set_header(table, !arg_no_legend); + if (arg_full) + table_set_width(table, 0); + + (void) table_set_empty_string(table, "-"); + + if (cs) { + for (s = socket_infos; s < socket_infos + cs; s++) { + _cleanup_free_ char *j = NULL; + const char *path; + + if (s->machine) { + j = strjoin(s->machine, ":", s->path); + if (!j) + return log_oom(); + path = j; + } else + path = s->path; + + r = table_add_many(table, + TABLE_STRING, path, + TABLE_STRING, s->type, + TABLE_STRING, s->id); + if (r < 0) + return table_log_add_error(r); + + if (strv_isempty(s->triggered)) + r = table_add_cell(table, NULL, TABLE_EMPTY, NULL); + else if (strv_length(s->triggered) == 1) + r = table_add_cell(table, NULL, TABLE_STRING, s->triggered[0]); + else + /* This should never happen, currently our socket units can only trigger a + * single unit. But let's handle this anyway, who knows what the future + * brings? */ + r = table_add_cell(table, NULL, TABLE_STRV, s->triggered); + if (r < 0) + return table_log_add_error(r); + + } + + on = ansi_highlight(); + off = ansi_normal(); + } else { + on = ansi_highlight_red(); + off = ansi_normal(); + } + + r = output_table(table); + if (r < 0) + return r; + + if (!arg_no_legend) { + printf("\n%s%u sockets listed.%s\n", on, cs, off); + if (!arg_all) + printf("Pass --all to see loaded but inactive sockets, too.\n"); + } + + return 0; +} + +int list_sockets(int argc, char *argv[], void *userdata) { + _cleanup_(message_set_freep) Set *replies = NULL; + _cleanup_strv_free_ char **machines = NULL; + _cleanup_strv_free_ char **sockets_with_suffix = NULL; + _cleanup_free_ UnitInfo *unit_infos = NULL; + _cleanup_free_ struct socket_info *socket_infos = NULL; + const UnitInfo *u; + struct socket_info *s; + unsigned cs = 0; + size_t size = 0; + int r, n; + sd_bus *bus; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + (void) pager_open(arg_pager_flags); + + r = expand_unit_names(bus, strv_skip(argv, 1), ".socket", &sockets_with_suffix, NULL); + if (r < 0) + return r; + + if (argc == 1 || sockets_with_suffix) { + n = get_unit_list_recursive(bus, sockets_with_suffix, &unit_infos, &replies, &machines); + if (n < 0) + return n; + + for (u = unit_infos; u < unit_infos + n; u++) { + _cleanup_strv_free_ char **listening = NULL, **triggered = NULL; + int i, c; + + if (!endswith(u->id, ".socket")) + continue; + + r = get_triggered_units(bus, u->unit_path, &triggered); + if (r < 0) + goto cleanup; + + c = get_listening(bus, u->unit_path, &listening); + if (c < 0) { + r = c; + goto cleanup; + } + + if (!GREEDY_REALLOC(socket_infos, size, cs + c)) { + r = log_oom(); + goto cleanup; + } + + for (i = 0; i < c; i++) + socket_infos[cs + i] = (struct socket_info) { + .machine = u->machine, + .id = u->id, + .type = listening[i*2], + .path = listening[i*2 + 1], + .triggered = triggered, + .own_triggered = i==0, + }; + + /* from this point on we will cleanup those socket_infos */ + cs += c; + free(listening); + listening = triggered = NULL; /* avoid cleanup */ + } + + typesafe_qsort(socket_infos, cs, socket_info_compare); + } + + output_sockets_list(socket_infos, cs); + + cleanup: + assert(cs == 0 || socket_infos); + for (s = socket_infos; s < socket_infos + cs; s++) { + free(s->type); + free(s->path); + if (s->own_triggered) + strv_free(s->triggered); + } + + return r; +} + +static int get_next_elapse( + sd_bus *bus, + const char *path, + dual_timestamp *next) { + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + dual_timestamp t; + int r; + + assert(bus); + assert(path); + assert(next); + + r = sd_bus_get_property_trivial( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.systemd1.Timer", + "NextElapseUSecMonotonic", + &error, + 't', + &t.monotonic); + if (r < 0) + return log_error_errno(r, "Failed to get next elapse time: %s", bus_error_message(&error, r)); + + r = sd_bus_get_property_trivial( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.systemd1.Timer", + "NextElapseUSecRealtime", + &error, + 't', + &t.realtime); + if (r < 0) + return log_error_errno(r, "Failed to get next elapse time: %s", bus_error_message(&error, r)); + + *next = t; + return 0; +} + +static int get_last_trigger( + sd_bus *bus, + const char *path, + usec_t *last) { + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + int r; + + assert(bus); + assert(path); + assert(last); + + r = sd_bus_get_property_trivial( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.systemd1.Timer", + "LastTriggerUSec", + &error, + 't', + last); + if (r < 0) + return log_error_errno(r, "Failed to get last trigger time: %s", bus_error_message(&error, r)); + + return 0; +} + +struct timer_info { + const char* machine; + const char* id; + usec_t next_elapse; + usec_t last_trigger; + char** triggered; +}; + +static int timer_info_compare(const struct timer_info *a, const struct timer_info *b) { + int r; + + assert(a); + assert(b); + + r = strcasecmp_ptr(a->machine, b->machine); + if (r != 0) + return r; + + r = CMP(a->next_elapse, b->next_elapse); + if (r != 0) + return r; + + return strcmp(a->id, b->id); +} + +static int output_timers_list(struct timer_info *timer_infos, unsigned n) { + _cleanup_(table_unrefp) Table *table = NULL; + struct timer_info *t; + const char *on, *off; + int r; + + assert(timer_infos || n == 0); + + table = table_new("next", "left", "last", "passed", "unit", "activates"); + if (!table) + return log_oom(); + + table_set_header(table, !arg_no_legend); + if (arg_full) + table_set_width(table, 0); + + (void) table_set_empty_string(table, "-"); + + if (n > 0) { + for (t = timer_infos; t < timer_infos + n; t++) { + _cleanup_free_ char *j = NULL, *activates = NULL; + const char *unit; + + if (t->machine) { + j = strjoin(t->machine, ":", t->id); + if (!j) + return log_oom(); + unit = j; + } else + unit = t->id; + + activates = strv_join(t->triggered, ", "); + if (!activates) + return log_oom(); + + r = table_add_many(table, + TABLE_TIMESTAMP, t->next_elapse, + TABLE_TIMESTAMP_RELATIVE, t->next_elapse, + TABLE_TIMESTAMP, t->last_trigger, + TABLE_TIMESTAMP_RELATIVE, t->last_trigger, + TABLE_STRING, unit, + TABLE_STRING, activates); + if (r < 0) + return table_log_add_error(r); + } + + on = ansi_highlight(); + off = ansi_normal(); + } else { + on = ansi_highlight_red(); + off = ansi_normal(); + } + + r = output_table(table); + if (r < 0) + return r; + + if (!arg_no_legend) { + printf("\n%s%u timers listed.%s\n", on, n, off); + if (!arg_all) + printf("Pass --all to see loaded but inactive timers, too.\n"); + } + + return 0; +} + +usec_t calc_next_elapse(dual_timestamp *nw, dual_timestamp *next) { + usec_t next_elapse; + + assert(nw); + assert(next); + + if (timestamp_is_set(next->monotonic)) { + usec_t converted; + + if (next->monotonic > nw->monotonic) + converted = nw->realtime + (next->monotonic - nw->monotonic); + else + converted = nw->realtime - (nw->monotonic - next->monotonic); + + if (timestamp_is_set(next->realtime)) + next_elapse = MIN(converted, next->realtime); + else + next_elapse = converted; + + } else + next_elapse = next->realtime; + + return next_elapse; +} + +int list_timers(int argc, char *argv[], void *userdata) { + _cleanup_(message_set_freep) Set *replies = NULL; + _cleanup_strv_free_ char **machines = NULL; + _cleanup_strv_free_ char **timers_with_suffix = NULL; + _cleanup_free_ struct timer_info *timer_infos = NULL; + _cleanup_free_ UnitInfo *unit_infos = NULL; + struct timer_info *t; + const UnitInfo *u; + size_t size = 0; + int n, c = 0; + dual_timestamp nw; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + (void) pager_open(arg_pager_flags); + + r = expand_unit_names(bus, strv_skip(argv, 1), ".timer", &timers_with_suffix, NULL); + if (r < 0) + return r; + + if (argc == 1 || timers_with_suffix) { + n = get_unit_list_recursive(bus, timers_with_suffix, &unit_infos, &replies, &machines); + if (n < 0) + return n; + + dual_timestamp_get(&nw); + + for (u = unit_infos; u < unit_infos + n; u++) { + _cleanup_strv_free_ char **triggered = NULL; + dual_timestamp next = DUAL_TIMESTAMP_NULL; + usec_t m, last = 0; + + if (!endswith(u->id, ".timer")) + continue; + + r = get_triggered_units(bus, u->unit_path, &triggered); + if (r < 0) + goto cleanup; + + r = get_next_elapse(bus, u->unit_path, &next); + if (r < 0) + goto cleanup; + + get_last_trigger(bus, u->unit_path, &last); + + if (!GREEDY_REALLOC(timer_infos, size, c+1)) { + r = log_oom(); + goto cleanup; + } + + m = calc_next_elapse(&nw, &next); + + timer_infos[c++] = (struct timer_info) { + .machine = u->machine, + .id = u->id, + .next_elapse = m, + .last_trigger = last, + .triggered = TAKE_PTR(triggered), + }; + } + + typesafe_qsort(timer_infos, c, timer_info_compare); + } + + output_timers_list(timer_infos, c); + + cleanup: + for (t = timer_infos; t < timer_infos + c; t++) + strv_free(t->triggered); + + return r; +} diff --git a/src/systemctl/systemctl-list-units.h b/src/systemctl/systemctl-list-units.h new file mode 100644 index 0000000..ef27627 --- /dev/null +++ b/src/systemctl/systemctl-list-units.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int list_units(int argc, char *argv[], void *userdata); +int list_sockets(int argc, char *argv[], void *userdata); +int list_timers(int argc, char *argv[], void *userdata); + +usec_t calc_next_elapse(dual_timestamp *nw, dual_timestamp *next); diff --git a/src/systemctl/systemctl-log-setting.c b/src/systemctl/systemctl-log-setting.c new file mode 100644 index 0000000..64984e4 --- /dev/null +++ b/src/systemctl/systemctl-log-setting.c @@ -0,0 +1,144 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "pretty-print.h" +#include "syslog-util.h" +#include "systemctl-log-setting.h" +#include "systemctl-util.h" +#include "systemctl.h" + +static void give_log_control1_hint(const char *name) { + _cleanup_free_ char *link = NULL; + + if (arg_quiet) + return; + + (void) terminal_urlify_man("org.freedesktop.LogControl1", "5", &link); + + log_notice("Hint: the service must declare BusName= and implement the appropriate D-Bus interface.\n" + " See the %s for details.", link ?: "org.freedesktop.LogControl1(5) man page"); +} + +static int log_setting_internal(sd_bus *bus, const BusLocator* bloc, const char *verb, const char *value) { + assert(bus); + assert(STR_IN_SET(verb, "log-level", "log-target", "service-log-level", "service-log-target")); + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + bool level = endswith(verb, "log-level"); + int r; + + if (value) { + if (level) { + if (log_level_from_string(value) < 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "\"%s\" is not a valid log level.", value); + } + + r = bus_set_property(bus, bloc, + level ? "LogLevel" : "LogTarget", + &error, "s", value); + if (r >= 0) + return 0; + + log_error_errno(r, "Failed to set log %s of %s to %s: %s", + level ? "level" : "target", + bloc->destination, value, bus_error_message(&error, r)); + } else { + _cleanup_free_ char *t = NULL; + + r = bus_get_property_string(bus, bloc, + level ? "LogLevel" : "LogTarget", + &error, &t); + if (r >= 0) { + puts(t); + return 0; + } + + log_error_errno(r, "Failed to get log %s of %s: %s", + level ? "level" : "target", + bloc->destination, bus_error_message(&error, r)); + } + + if (sd_bus_error_has_names(&error, SD_BUS_ERROR_UNKNOWN_METHOD, + SD_BUS_ERROR_UNKNOWN_OBJECT, + SD_BUS_ERROR_UNKNOWN_INTERFACE, + SD_BUS_ERROR_UNKNOWN_PROPERTY)) + give_log_control1_hint(bloc->destination); + return r; +} + +int log_setting(int argc, char *argv[], void *userdata) { + sd_bus *bus; + int r; + + assert(argc >= 1 && argc <= 2); + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + return log_setting_internal(bus, bus_systemd_mgr, argv[0], argv[1]); +} + +static int service_name_to_dbus(sd_bus *bus, const char *name, char **ret_dbus_name) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_free_ char *bus_name = NULL; + int r; + + /* First, look for the BusName= property */ + _cleanup_free_ char *dbus_path = unit_dbus_path_from_name(name); + if (!dbus_path) + return log_oom(); + + r = sd_bus_get_property_string( + bus, + "org.freedesktop.systemd1", + dbus_path, + "org.freedesktop.systemd1.Service", + "BusName", + &error, + &bus_name); + if (r < 0) + return log_error_errno(r, "Failed to obtain BusName= property of %s: %s", + name, bus_error_message(&error, r)); + + if (isempty(bus_name)) { + log_error("Unit %s doesn't declare BusName=.", name); + give_log_control1_hint(name); + return -ENOLINK; + } + + *ret_dbus_name = TAKE_PTR(bus_name); + return 0; +} + +int service_log_setting(int argc, char *argv[], void *userdata) { + sd_bus *bus; + _cleanup_free_ char *unit = NULL, *dbus_name = NULL; + int r; + + assert(argc >= 2 && argc <= 3); + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + r = unit_name_mangle_with_suffix(argv[1], argv[0], + arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN, + ".service", &unit); + if (r < 0) + return log_error_errno(r, "Failed to mangle unit name: %m"); + + r = service_name_to_dbus(bus, unit, &dbus_name); + if (r < 0) + return r; + + const BusLocator bloc = { + .destination = dbus_name, + .path = "/org/freedesktop/LogControl1", + .interface = "org.freedesktop.LogControl1", + }; + + return log_setting_internal(bus, &bloc, argv[0], argv[2]); +} diff --git a/src/systemctl/systemctl-log-setting.h b/src/systemctl/systemctl-log-setting.h new file mode 100644 index 0000000..9a2e793 --- /dev/null +++ b/src/systemctl/systemctl-log-setting.h @@ -0,0 +1,5 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int log_setting(int argc, char *argv[], void *userdata); +int service_log_setting(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-logind.c b/src/systemctl/systemctl-logind.c new file mode 100644 index 0000000..405f12a --- /dev/null +++ b/src/systemctl/systemctl-logind.c @@ -0,0 +1,380 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <unistd.h> + +#include "sd-login.h" + +#include "bus-error.h" +#include "bus-locator.h" +#include "process-util.h" +#include "systemctl-logind.h" +#include "systemctl-start-unit.h" +#include "systemctl-util.h" +#include "systemctl.h" +#include "terminal-util.h" +#include "user-util.h" + +int logind_set_wall_message(void) { +#if ENABLE_LOGIND + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + _cleanup_free_ char *m = NULL; + int r; + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + m = strv_join(arg_wall, " "); + if (!m) + return log_oom(); + + log_debug("%s wall message \"%s\".", arg_dry_run ? "Would set" : "Setting", m); + if (arg_dry_run) + return 0; + + r = bus_call_method(bus, bus_login_mgr, "SetWallMessage", &error, NULL, "sb", m, !arg_no_wall); + if (r < 0) + return log_warning_errno(r, "Failed to set wall message, ignoring: %s", bus_error_message(&error, r)); +#endif + return 0; +} + +/* Ask systemd-logind, which might grant access to unprivileged users through polkit */ +int logind_reboot(enum action a) { +#if ENABLE_LOGIND + static const struct { + const char *method; + const char *description; + } actions[_ACTION_MAX] = { + [ACTION_POWEROFF] = { "PowerOff", "power off system" }, + [ACTION_REBOOT] = { "Reboot", "reboot system" }, + [ACTION_HALT] = { "Halt", "halt system" }, + [ACTION_SUSPEND] = { "Suspend", "suspend system" }, + [ACTION_HIBERNATE] = { "Hibernate", "hibernate system" }, + [ACTION_HYBRID_SLEEP] = { "HybridSleep", "put system into hybrid sleep" }, + [ACTION_SUSPEND_THEN_HIBERNATE] = { "SuspendThenHibernate", "suspend system, hibernate later" }, + }; + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + int r; + + if (a < 0 || a >= _ACTION_MAX || !actions[a].method) + return -EINVAL; + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + polkit_agent_open_maybe(); + (void) logind_set_wall_message(); + + log_debug("%s org.freedesktop.login1.Manager %s dbus call.", arg_dry_run ? "Would execute" : "Executing", actions[a].method); + + if (arg_dry_run) + return 0; + + r = bus_call_method(bus, bus_login_mgr, actions[a].method, &error, NULL, "b", arg_ask_password); + if (r < 0) + return log_error_errno(r, "Failed to %s via logind: %s", actions[a].description, bus_error_message(&error, r)); + + return 0; +#else + return -ENOSYS; +#endif +} + +int logind_check_inhibitors(enum action a) { +#if ENABLE_LOGIND + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_strv_free_ char **sessions = NULL; + const char *what, *who, *why, *mode; + uint32_t uid, pid; + sd_bus *bus; + unsigned c = 0; + char **s; + int r; + + if (arg_ignore_inhibitors || arg_force > 0) + return 0; + + if (arg_when > 0) + return 0; + + if (geteuid() == 0) + return 0; + + if (!on_tty()) + return 0; + + if (arg_transport != BUS_TRANSPORT_LOCAL) + return 0; + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + r = bus_call_method(bus, bus_login_mgr, "ListInhibitors", NULL, &reply, NULL); + if (r < 0) + /* If logind is not around, then there are no inhibitors... */ + return 0; + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) { + _cleanup_free_ char *comm = NULL, *user = NULL; + _cleanup_strv_free_ char **sv = NULL; + + if (!streq(mode, "block")) + continue; + + sv = strv_split(what, ":"); + if (!sv) + return log_oom(); + + if (!pid_is_valid((pid_t) pid)) + return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "Invalid PID "PID_FMT".", (pid_t) pid); + + if (!strv_contains(sv, + IN_SET(a, + ACTION_HALT, + ACTION_POWEROFF, + ACTION_REBOOT, + ACTION_KEXEC) ? "shutdown" : "sleep")) + continue; + + (void) get_process_comm(pid, &comm); + user = uid_to_name(uid); + + log_warning("Operation inhibited by \"%s\" (PID "PID_FMT" \"%s\", user %s), reason is \"%s\".", + who, (pid_t) pid, strna(comm), strna(user), why); + + c++; + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + /* Check for current sessions */ + sd_get_sessions(&sessions); + STRV_FOREACH(s, sessions) { + _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL; + + if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid()) + continue; + + if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user")) + continue; + + if (sd_session_get_type(*s, &type) < 0 || !STR_IN_SET(type, "x11", "wayland", "tty", "mir")) + continue; + + sd_session_get_tty(*s, &tty); + sd_session_get_seat(*s, &seat); + sd_session_get_service(*s, &service); + user = uid_to_name(uid); + + log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty); + c++; + } + + if (c <= 0) + return 0; + + return log_error_errno(SYNTHETIC_ERRNO(EPERM), + "Please retry operation after closing inhibitors and logging out other users.\n" + "Alternatively, ignore inhibitors and users with 'systemctl %s -i'.", + action_table[a].verb); +#else + return 0; +#endif +} + +int prepare_firmware_setup(void) { + + if (!arg_firmware_setup) + return 0; + +#if ENABLE_LOGIND + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + r = bus_call_method(bus, bus_login_mgr, "SetRebootToFirmwareSetup", &error, NULL, "b", true); + if (r < 0) + return log_error_errno(r, "Cannot indicate to EFI to boot into setup mode: %s", bus_error_message(&error, r)); + + return 0; +#else + return log_error_errno(SYNTHETIC_ERRNO(ENOSYS), + "Booting into firmware setup not supported."); +#endif +} + +int prepare_boot_loader_menu(void) { + + if (arg_boot_loader_menu == USEC_INFINITY) + return 0; + +#if ENABLE_LOGIND + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + r = bus_call_method(bus, bus_login_mgr, "SetRebootToBootLoaderMenu", &error, NULL, "t", arg_boot_loader_menu); + if (r < 0) + return log_error_errno(r, "Cannot indicate to boot loader to enter boot loader entry menu: %s", bus_error_message(&error, r)); + + return 0; +#else + return log_error_errno(SYNTHETIC_ERRNO(ENOSYS), + "Booting into boot loader menu not supported."); +#endif +} + +int prepare_boot_loader_entry(void) { + + if (!arg_boot_loader_entry) + return 0; + +#if ENABLE_LOGIND + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + r = bus_call_method(bus, bus_login_mgr, "SetRebootToBootLoaderEntry", &error, NULL, "s", arg_boot_loader_entry); + if (r < 0) + return log_error_errno(r, "Cannot set boot into loader entry '%s': %s", arg_boot_loader_entry, bus_error_message(&error, r)); + + return 0; +#else + return log_error_errno(SYNTHETIC_ERRNO(ENOSYS), + "Booting into boot loader entry not supported."); +#endif +} + +int logind_schedule_shutdown(void) { + +#if ENABLE_LOGIND + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + char date[FORMAT_TIMESTAMP_MAX]; + const char *action; + const char *log_action; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + switch (arg_action) { + case ACTION_HALT: + action = "halt"; + log_action = "Shutdown"; + break; + case ACTION_POWEROFF: + action = "poweroff"; + log_action = "Shutdown"; + break; + case ACTION_KEXEC: + action = "kexec"; + log_action = "Reboot via kexec"; + break; + case ACTION_EXIT: + action = "exit"; + log_action = "Shutdown"; + break; + case ACTION_REBOOT: + default: + action = "reboot"; + log_action = "Reboot"; + break; + } + + if (arg_dry_run) + action = strjoina("dry-", action); + + (void) logind_set_wall_message(); + + r = bus_call_method(bus, bus_login_mgr, "ScheduleShutdown", &error, NULL, "st", action, arg_when); + if (r < 0) + return log_warning_errno(r, "Failed to call ScheduleShutdown in logind, proceeding with immediate shutdown: %s", bus_error_message(&error, r)); + + if (!arg_quiet) + log_info("%s scheduled for %s, use 'shutdown -c' to cancel.", log_action, format_timestamp_style(date, sizeof(date), arg_when, arg_timestamp_style)); + return 0; +#else + return log_error_errno(SYNTHETIC_ERRNO(ENOSYS), + "Cannot schedule shutdown without logind support, proceeding with immediate shutdown."); +#endif +} + +int logind_cancel_shutdown(void) { +#if ENABLE_LOGIND + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + (void) logind_set_wall_message(); + + r = bus_call_method(bus, bus_login_mgr, "CancelScheduledShutdown", &error, NULL, NULL); + if (r < 0) + return log_warning_errno(r, "Failed to talk to logind, shutdown hasn't been cancelled: %s", bus_error_message(&error, r)); + + return 0; +#else + return log_error_errno(SYNTHETIC_ERRNO(ENOSYS), + "Not compiled with logind support, cannot cancel scheduled shutdowns."); +#endif +} + +int help_boot_loader_entry(void) { +#if ENABLE_LOGIND + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_strv_free_ char **l = NULL; + sd_bus *bus; + char **i; + int r; + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + r = bus_get_property_strv(bus, bus_login_mgr, "BootLoaderEntries", &error, &l); + if (r < 0) + return log_error_errno(r, "Failed to enumerate boot loader entries: %s", bus_error_message(&error, r)); + + if (strv_isempty(l)) + return log_error_errno(SYNTHETIC_ERRNO(ENODATA), "No boot loader entries discovered."); + + STRV_FOREACH(i, l) + puts(*i); + + return 0; +#else + return log_error_errno(SYNTHETIC_ERRNO(ENOSYS), + "Not compiled with logind support, cannot display boot loader entries."); +#endif +} diff --git a/src/systemctl/systemctl-logind.h b/src/systemctl/systemctl-logind.h new file mode 100644 index 0000000..144056b --- /dev/null +++ b/src/systemctl/systemctl-logind.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#include "systemctl.h" + +int logind_set_wall_message(void); + +int logind_reboot(enum action a); +int logind_check_inhibitors(enum action a); + +int prepare_firmware_setup(void); +int prepare_boot_loader_menu(void); +int prepare_boot_loader_entry(void); + +int logind_schedule_shutdown(void); +int logind_cancel_shutdown(void); + +int help_boot_loader_entry(void); diff --git a/src/systemctl/systemctl-preset-all.c b/src/systemctl/systemctl-preset-all.c new file mode 100644 index 0000000..b5eb199 --- /dev/null +++ b/src/systemctl/systemctl-preset-all.c @@ -0,0 +1,61 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "systemctl-daemon-reload.h" +#include "systemctl-preset-all.h" +#include "systemctl-util.h" +#include "systemctl.h" + +int preset_all(int argc, char *argv[], void *userdata) { + UnitFileChange *changes = NULL; + size_t n_changes = 0; + int r; + + if (install_client_side()) { + r = unit_file_preset_all(arg_scope, unit_file_flags_from_args(), arg_root, arg_preset_mode, &changes, &n_changes); + unit_file_dump_changes(r, "preset", changes, n_changes, arg_quiet); + + if (r > 0) + r = 0; + } else { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + sd_bus *bus; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_maybe(); + + r = bus_call_method( + bus, + bus_systemd_mgr, + "PresetAllUnitFiles", + &error, + &reply, + "sbb", + unit_file_preset_mode_to_string(arg_preset_mode), + arg_runtime, + arg_force); + if (r < 0) + return log_error_errno(r, "Failed to preset all units: %s", bus_error_message(&error, r)); + + r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, &changes, &n_changes); + if (r < 0) + goto finish; + + if (arg_no_reload) { + r = 0; + goto finish; + } + + r = daemon_reload(argc, argv, userdata); + } + +finish: + unit_file_changes_free(changes, n_changes); + + return r; +} diff --git a/src/systemctl/systemctl-preset-all.h b/src/systemctl/systemctl-preset-all.h new file mode 100644 index 0000000..f4f6790 --- /dev/null +++ b/src/systemctl/systemctl-preset-all.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int preset_all(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-reset-failed.c b/src/systemctl/systemctl-reset-failed.c new file mode 100644 index 0000000..eee7586 --- /dev/null +++ b/src/systemctl/systemctl-reset-failed.c @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "systemctl-reset-failed.h" +#include "systemctl-trivial-method.h" +#include "systemctl-util.h" +#include "systemctl.h" + +int reset_failed(int argc, char *argv[], void *userdata) { + _cleanup_strv_free_ char **names = NULL; + sd_bus *bus; + char **name; + int r, q; + + if (argc <= 1) /* Shortcut to trivial_method() if no argument is given */ + return trivial_method(argc, argv, userdata); + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_maybe(); + + r = expand_unit_names(bus, strv_skip(argv, 1), NULL, &names, NULL); + if (r < 0) + return log_error_errno(r, "Failed to expand names: %m"); + + STRV_FOREACH(name, names) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + + q = bus_call_method(bus, bus_systemd_mgr, "ResetFailedUnit", &error, NULL, "s", *name); + if (q < 0) { + log_error_errno(q, "Failed to reset failed state of unit %s: %s", *name, bus_error_message(&error, q)); + if (r == 0) + r = q; + } + } + + return r; +} diff --git a/src/systemctl/systemctl-reset-failed.h b/src/systemctl/systemctl-reset-failed.h new file mode 100644 index 0000000..956bb46 --- /dev/null +++ b/src/systemctl/systemctl-reset-failed.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int reset_failed(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-service-watchdogs.c b/src/systemctl/systemctl-service-watchdogs.c new file mode 100644 index 0000000..e579851 --- /dev/null +++ b/src/systemctl/systemctl-service-watchdogs.c @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "parse-util.h" +#include "systemctl-service-watchdogs.h" +#include "systemctl-util.h" +#include "systemctl.h" + +int service_watchdogs(int argc, char *argv[], void *userdata) { + sd_bus *bus; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + int b, r; + + assert(argv); + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + if (argc == 1) { + /* get ServiceWatchdogs */ + r = bus_get_property_trivial(bus, bus_systemd_mgr, "ServiceWatchdogs", &error, 'b', &b); + if (r < 0) + return log_error_errno(r, "Failed to get service-watchdog state: %s", bus_error_message(&error, r)); + + printf("%s\n", yes_no(!!b)); + + } else { + /* set ServiceWatchdogs */ + assert(argc == 2); + + b = parse_boolean(argv[1]); + if (b < 0) + return log_error_errno(b, "Failed to parse service-watchdogs argument: %m"); + + r = bus_set_property(bus, bus_systemd_mgr, "ServiceWatchdogs", &error, "b", b); + if (r < 0) + return log_error_errno(r, "Failed to set service-watchdog state: %s", bus_error_message(&error, r)); + } + + return 0; +} diff --git a/src/systemctl/systemctl-service-watchdogs.h b/src/systemctl/systemctl-service-watchdogs.h new file mode 100644 index 0000000..11a53db --- /dev/null +++ b/src/systemctl/systemctl-service-watchdogs.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int service_watchdogs(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-set-default.c b/src/systemctl/systemctl-set-default.c new file mode 100644 index 0000000..05c1894 --- /dev/null +++ b/src/systemctl/systemctl-set-default.c @@ -0,0 +1,158 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "proc-cmdline.h" +#include "systemctl-daemon-reload.h" +#include "systemctl-set-default.h" +#include "systemctl-util.h" +#include "systemctl.h" + +static int parse_proc_cmdline_item(const char *key, const char *value, void *data) { + char **ret = data; + + if (streq(key, "systemd.unit")) { + if (proc_cmdline_value_missing(key, value)) + return 0; + if (!unit_name_is_valid(value, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE)) { + log_warning("Unit name specified on %s= is not valid, ignoring: %s", key, value); + return 0; + } + + return free_and_strdup_warn(ret, key); + + } else if (!value) { + if (runlevel_to_target(key)) + return free_and_strdup_warn(ret, key); + } + + return 0; +} + +static void emit_cmdline_warning(void) { + if (arg_quiet || arg_root) + /* don't bother checking the commandline if we're operating on a container */ + return; + + _cleanup_free_ char *override = NULL; + int r; + + r = proc_cmdline_parse(parse_proc_cmdline_item, &override, 0); + if (r < 0) + log_debug_errno(r, "Failed to parse kernel command line, ignoring: %m"); + if (override) + log_notice("Note: found \"%s\" on the kernel commandline, which overrides the default unit.", + override); +} + +static int determine_default(char **ret_name) { + int r; + + if (install_client_side()) { + r = unit_file_get_default(arg_scope, arg_root, ret_name); + if (r < 0) + return log_error_errno(r, "Failed to get default target: %m"); + return 0; + + } else { + sd_bus *bus; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + const char *name; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = bus_call_method(bus, bus_systemd_mgr, "GetDefaultTarget", &error, &reply, NULL); + if (r < 0) + return log_error_errno(r, "Failed to get default target: %s", bus_error_message(&error, r)); + + r = sd_bus_message_read(reply, "s", &name); + if (r < 0) + return bus_log_parse_error(r); + + return free_and_strdup_warn(ret_name, name); + } +} + +int get_default(int argc, char *argv[], void *userdata) { + _cleanup_free_ char *name = NULL; + int r; + + r = determine_default(&name); + if (r < 0) + return r; + + printf("%s\n", name); + + emit_cmdline_warning(); + + return 0; +} + +int set_default(int argc, char *argv[], void *userdata) { + _cleanup_free_ char *unit = NULL; + UnitFileChange *changes = NULL; + size_t n_changes = 0; + int r; + + assert(argc >= 2); + assert(argv); + + r = unit_name_mangle_with_suffix(argv[1], "set-default", + arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN, + ".target", &unit); + if (r < 0) + return log_error_errno(r, "Failed to mangle unit name: %m"); + + if (install_client_side()) { + r = unit_file_set_default(arg_scope, UNIT_FILE_FORCE, arg_root, unit, &changes, &n_changes); + unit_file_dump_changes(r, "set default", changes, n_changes, arg_quiet); + + if (r > 0) + r = 0; + } else { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + sd_bus *bus; + + polkit_agent_open_maybe(); + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = bus_call_method(bus, bus_systemd_mgr, "SetDefaultTarget", &error, &reply, "sb", unit, 1); + if (r < 0) + return log_error_errno(r, "Failed to set default target: %s", bus_error_message(&error, r)); + + r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, &changes, &n_changes); + if (r < 0) + goto finish; + + /* Try to reload if enabled */ + if (!arg_no_reload) + r = daemon_reload(argc, argv, userdata); + else + r = 0; + } + + emit_cmdline_warning(); + + if (!arg_quiet) { + _cleanup_free_ char *final = NULL; + + r = determine_default(&final); + if (r < 0) + return r; + + if (!streq(final, unit)) + log_notice("Note: \"%s\" is the default unit (possibly a runtime override).", final); + } + +finish: + unit_file_changes_free(changes, n_changes); + + return r; +} diff --git a/src/systemctl/systemctl-set-default.h b/src/systemctl/systemctl-set-default.h new file mode 100644 index 0000000..839b2c9 --- /dev/null +++ b/src/systemctl/systemctl-set-default.h @@ -0,0 +1,5 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int get_default(int argc, char *argv[], void *userdata); +int set_default(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-set-environment.c b/src/systemctl/systemctl-set-environment.c new file mode 100644 index 0000000..b37bd6f --- /dev/null +++ b/src/systemctl/systemctl-set-environment.c @@ -0,0 +1,184 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "env-util.h" +#include "escape.h" +#include "systemctl-set-environment.h" +#include "systemctl-util.h" +#include "systemctl.h" + +static int print_variable(const char *s) { + const char *sep; + _cleanup_free_ char *esc = NULL; + + sep = strchr(s, '='); + if (!sep) + return log_error_errno(SYNTHETIC_ERRNO(EUCLEAN), + "Invalid environment block"); + + esc = shell_maybe_quote(sep + 1, ESCAPE_POSIX); + if (!esc) + return log_oom(); + + printf("%.*s=%s\n", (int)(sep-s), s, esc); + return 0; +} + +int show_environment(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + const char *text; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + (void) pager_open(arg_pager_flags); + + r = bus_get_property(bus, bus_systemd_mgr, "Environment", &error, &reply, "as"); + if (r < 0) + return log_error_errno(r, "Failed to get environment: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "s"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &text)) > 0) { + r = print_variable(text); + if (r < 0) + return r; + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + return 0; +} + +static void invalid_callback(const char *p, void *userdata) { + _cleanup_free_ char *t = cescape(p); + + log_debug("Ignoring invalid environment assignment \"%s\".", strnull(t)); +} + +int set_environment(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + const char *method; + sd_bus *bus; + int r; + + assert(argc > 1); + assert(argv); + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_maybe(); + + method = streq(argv[0], "set-environment") + ? "SetEnvironment" + : "UnsetEnvironment"; + + r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, method); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, strv_skip(argv, 1)); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_call(bus, m, 0, &error, NULL); + if (r < 0) + return log_error_errno(r, "Failed to set environment: %s", bus_error_message(&error, r)); + + return 0; +} + +int import_environment(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_maybe(); + + r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "SetEnvironment"); + if (r < 0) + return bus_log_create_error(r); + + if (argc < 2) { + _cleanup_strv_free_ char **copy = NULL; + + copy = strv_copy(environ); + if (!copy) + return log_oom(); + + strv_env_clean_with_callback(copy, invalid_callback, NULL); + + char **e; + STRV_FOREACH(e, copy) + if (string_has_cc(*e, NULL)) + log_notice("Environment variable $%.*s contains control characters, importing anyway.", + (int) strcspn(*e, "="), *e); + + r = sd_bus_message_append_strv(m, copy); + + } else { + char **a, **b; + + r = sd_bus_message_open_container(m, 'a', "s"); + if (r < 0) + return bus_log_create_error(r); + + STRV_FOREACH(a, strv_skip(argv, 1)) { + + if (!env_name_is_valid(*a)) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Not a valid environment variable name: %s", *a); + + bool found = false; + STRV_FOREACH(b, environ) { + const char *eq; + + eq = startswith(*b, *a); + if (eq && *eq == '=') { + if (string_has_cc(eq + 1, NULL)) + log_notice("Environment variable $%.*s contains control characters, importing anyway.", + (int) (eq - *b), *b); + + r = sd_bus_message_append(m, "s", *b); + if (r < 0) + return bus_log_create_error(r); + + found = true; + break; + } + } + + if (!found) + log_notice("Environment variable $%s not set, ignoring.", *a); + } + + r = sd_bus_message_close_container(m); + } + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_call(bus, m, 0, &error, NULL); + if (r < 0) + return log_error_errno(r, "Failed to import environment: %s", bus_error_message(&error, r)); + + return 0; +} diff --git a/src/systemctl/systemctl-set-environment.h b/src/systemctl/systemctl-set-environment.h new file mode 100644 index 0000000..bd05e31 --- /dev/null +++ b/src/systemctl/systemctl-set-environment.h @@ -0,0 +1,6 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int show_environment(int argc, char *argv[], void *userdata); +int set_environment(int argc, char *argv[], void *userdata); +int import_environment(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-set-property.c b/src/systemctl/systemctl-set-property.c new file mode 100644 index 0000000..183a7b6 --- /dev/null +++ b/src/systemctl/systemctl-set-property.c @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "systemctl-set-property.h" +#include "systemctl-util.h" +#include "systemctl.h" + +int set_property(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_free_ char *n = NULL; + UnitType t; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_maybe(); + + r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "SetUnitProperties"); + if (r < 0) + return bus_log_create_error(r); + + r = unit_name_mangle(argv[1], arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN, &n); + if (r < 0) + return log_error_errno(r, "Failed to mangle unit name: %m"); + + t = unit_name_to_type(n); + if (t < 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid unit type: %s", n); + + r = sd_bus_message_append(m, "sb", n, arg_runtime); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, "(sv)"); + if (r < 0) + return bus_log_create_error(r); + + r = bus_append_unit_property_assignment_many(m, t, strv_skip(argv, 2)); + if (r < 0) + return r; + + r = sd_bus_message_close_container(m); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_call(bus, m, 0, &error, NULL); + if (r < 0) + return log_error_errno(r, "Failed to set unit properties on %s: %s", n, bus_error_message(&error, r)); + + return 0; +} diff --git a/src/systemctl/systemctl-set-property.h b/src/systemctl/systemctl-set-property.h new file mode 100644 index 0000000..74990e7 --- /dev/null +++ b/src/systemctl/systemctl-set-property.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int set_property(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-show.c b/src/systemctl/systemctl-show.c new file mode 100644 index 0000000..d5efecb --- /dev/null +++ b/src/systemctl/systemctl-show.c @@ -0,0 +1,2135 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <sys/mount.h> + +#include "bus-error.h" +#include "bus-locator.h" +#include "bus-map-properties.h" +#include "bus-print-properties.h" +#include "bus-unit-procs.h" +#include "cgroup-show.h" +#include "cpu-set-util.h" +#include "errno-util.h" +#include "exec-util.h" +#include "exit-status.h" +#include "format-util.h" +#include "hexdecoct.h" +#include "hostname-util.h" +#include "in-addr-util.h" +#include "journal-file.h" +#include "list.h" +#include "locale-util.h" +#include "memory-util.h" +#include "numa-util.h" +#include "parse-util.h" +#include "path-util.h" +#include "pretty-print.h" +#include "process-util.h" +#include "signal-util.h" +#include "sort-util.h" +#include "string-table.h" +#include "systemctl-list-machines.h" +#include "systemctl-list-units.h" +#include "systemctl-show.h" +#include "systemctl-sysv-compat.h" +#include "systemctl-util.h" +#include "systemctl.h" +#include "terminal-util.h" +#include "utf8.h" + +static OutputFlags get_output_flags(void) { + return + arg_all * OUTPUT_SHOW_ALL | + (arg_full || !on_tty() || pager_have()) * OUTPUT_FULL_WIDTH | + colors_enabled() * OUTPUT_COLOR | + !arg_quiet * OUTPUT_WARN_CUTOFF; +} + +typedef struct ExecStatusInfo { + char *name; + + char *path; + char **argv; + + bool ignore; + + usec_t start_timestamp; + usec_t exit_timestamp; + pid_t pid; + int code; + int status; + + ExecCommandFlags flags; + + LIST_FIELDS(struct ExecStatusInfo, exec); +} ExecStatusInfo; + +static void exec_status_info_free(ExecStatusInfo *i) { + assert(i); + + free(i->name); + free(i->path); + strv_free(i->argv); + free(i); +} + +static int exec_status_info_deserialize(sd_bus_message *m, ExecStatusInfo *i, bool is_ex_prop) { + _cleanup_strv_free_ char **ex_opts = NULL; + uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic; + const char *path; + uint32_t pid; + int32_t code, status; + int ignore, r; + + assert(m); + assert(i); + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, is_ex_prop ? "sasasttttuii" : "sasbttttuii"); + if (r < 0) + return bus_log_parse_error(r); + else if (r == 0) + return 0; + + r = sd_bus_message_read(m, "s", &path); + if (r < 0) + return bus_log_parse_error(r); + + i->path = strdup(path); + if (!i->path) + return log_oom(); + + r = sd_bus_message_read_strv(m, &i->argv); + if (r < 0) + return bus_log_parse_error(r); + + r = is_ex_prop ? sd_bus_message_read_strv(m, &ex_opts) : sd_bus_message_read(m, "b", &ignore); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_read(m, + "ttttuii", + &start_timestamp, &start_timestamp_monotonic, + &exit_timestamp, &exit_timestamp_monotonic, + &pid, + &code, &status); + if (r < 0) + return bus_log_parse_error(r); + + if (is_ex_prop) { + r = exec_command_flags_from_strv(ex_opts, &i->flags); + if (r < 0) + return log_error_errno(r, "Failed to convert strv to ExecCommandFlags: %m"); + + i->ignore = FLAGS_SET(i->flags, EXEC_COMMAND_IGNORE_FAILURE); + } else + i->ignore = ignore; + + i->start_timestamp = (usec_t) start_timestamp; + i->exit_timestamp = (usec_t) exit_timestamp; + i->pid = (pid_t) pid; + i->code = code; + i->status = status; + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 1; +} + +typedef struct UnitCondition { + char *name; + char *param; + bool trigger; + bool negate; + int tristate; + + LIST_FIELDS(struct UnitCondition, conditions); +} UnitCondition; + +static void unit_condition_free(UnitCondition *c) { + if (!c) + return; + + free(c->name); + free(c->param); + free(c); +} + +DEFINE_TRIVIAL_CLEANUP_FUNC(UnitCondition*, unit_condition_free); + +typedef struct UnitStatusInfo { + const char *id; + const char *load_state; + const char *active_state; + const char *freezer_state; + const char *sub_state; + const char *unit_file_state; + const char *unit_file_preset; + + const char *description; + const char *following; + + char **documentation; + + const char *fragment_path; + const char *source_path; + const char *control_group; + + char **dropin_paths; + + char **triggered_by; + char **triggers; + + const char *load_error; + const char *result; + + usec_t inactive_exit_timestamp; + usec_t inactive_exit_timestamp_monotonic; + usec_t active_enter_timestamp; + usec_t active_exit_timestamp; + usec_t inactive_enter_timestamp; + + bool need_daemon_reload; + bool transient; + + /* Service */ + pid_t main_pid; + pid_t control_pid; + const char *status_text; + const char *pid_file; + bool running:1; + int status_errno; + + usec_t start_timestamp; + usec_t exit_timestamp; + + int exit_code, exit_status; + + const char *log_namespace; + + usec_t condition_timestamp; + bool condition_result; + LIST_HEAD(UnitCondition, conditions); + + usec_t assert_timestamp; + bool assert_result; + bool failed_assert_trigger; + bool failed_assert_negate; + const char *failed_assert; + const char *failed_assert_parameter; + usec_t next_elapse_real; + usec_t next_elapse_monotonic; + + /* Socket */ + unsigned n_accepted; + unsigned n_connections; + unsigned n_refused; + bool accept; + + /* Pairs of type, path */ + char **listen; + + /* Device */ + const char *sysfs_path; + + /* Mount, Automount */ + const char *where; + + /* Swap */ + const char *what; + + /* CGroup */ + uint64_t memory_current; + uint64_t memory_min; + uint64_t memory_low; + uint64_t memory_high; + uint64_t memory_max; + uint64_t memory_swap_max; + uint64_t memory_limit; + uint64_t cpu_usage_nsec; + uint64_t tasks_current; + uint64_t tasks_max; + uint64_t ip_ingress_bytes; + uint64_t ip_egress_bytes; + uint64_t io_read_bytes; + uint64_t io_write_bytes; + + uint64_t default_memory_min; + uint64_t default_memory_low; + + LIST_HEAD(ExecStatusInfo, exec); +} UnitStatusInfo; + +static void unit_status_info_free(UnitStatusInfo *info) { + ExecStatusInfo *p; + UnitCondition *c; + + strv_free(info->documentation); + strv_free(info->dropin_paths); + strv_free(info->triggered_by); + strv_free(info->triggers); + strv_free(info->listen); + + while ((c = info->conditions)) { + LIST_REMOVE(conditions, info->conditions, c); + unit_condition_free(c); + } + + while ((p = info->exec)) { + LIST_REMOVE(exec, info->exec, p); + exec_status_info_free(p); + } +} + +static void format_active_state(const char *active_state, const char **active_on, const char **active_off) { + if (streq_ptr(active_state, "failed")) { + *active_on = ansi_highlight_red(); + *active_off = ansi_normal(); + } else if (STRPTR_IN_SET(active_state, "active", "reloading")) { + *active_on = ansi_highlight_green(); + *active_off = ansi_normal(); + } else + *active_on = *active_off = ""; +} + +static void print_status_info( + sd_bus *bus, + UnitStatusInfo *i, + bool *ellipsized) { + + char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], since2[FORMAT_TIMESTAMP_MAX]; + const char *s1, *s2, *active_on, *active_off, *on, *off, *ss, *fs; + _cleanup_free_ char *formatted_path = NULL; + ExecStatusInfo *p; + usec_t timestamp; + const char *path; + char **t, **t2; + int r; + + assert(i); + + /* This shows pretty information about a unit. See print_property() for a low-level property + * printer */ + + format_active_state(i->active_state, &active_on, &active_off); + + printf("%s%s%s %s", active_on, special_glyph(SPECIAL_GLYPH_BLACK_CIRCLE), active_off, strna(i->id)); + + if (i->description && !streq_ptr(i->id, i->description)) + printf(" - %s", i->description); + + printf("\n"); + + if (i->following) + printf(" Follow: unit currently follows state of %s\n", i->following); + + if (STRPTR_IN_SET(i->load_state, "error", "not-found", "bad-setting")) { + on = ansi_highlight_red(); + off = ansi_normal(); + } else + on = off = ""; + + path = i->source_path ?: i->fragment_path; + if (path && terminal_urlify_path(path, NULL, &formatted_path) >= 0) + path = formatted_path; + + if (!isempty(i->load_error)) + printf(" Loaded: %s%s%s (Reason: %s)\n", + on, strna(i->load_state), off, i->load_error); + else if (path && !isempty(i->unit_file_state)) { + bool show_preset = !isempty(i->unit_file_preset) && + show_preset_for_state(unit_file_state_from_string(i->unit_file_state)); + + printf(" Loaded: %s%s%s (%s; %s%s%s)\n", + on, strna(i->load_state), off, + path, + i->unit_file_state, + show_preset ? "; vendor preset: " : "", + show_preset ? i->unit_file_preset : ""); + + } else if (path) + printf(" Loaded: %s%s%s (%s)\n", + on, strna(i->load_state), off, path); + else + printf(" Loaded: %s%s%s\n", + on, strna(i->load_state), off); + + if (i->transient) + printf(" Transient: yes\n"); + + if (!strv_isempty(i->dropin_paths)) { + _cleanup_free_ char *dir = NULL; + bool last = false; + char ** dropin; + + STRV_FOREACH(dropin, i->dropin_paths) { + _cleanup_free_ char *dropin_formatted = NULL; + const char *df; + + if (!dir || last) { + printf(dir ? " " : + " Drop-In: "); + + dir = mfree(dir); + + dir = dirname_malloc(*dropin); + if (!dir) { + log_oom(); + return; + } + + printf("%s\n" + " %s", dir, + special_glyph(SPECIAL_GLYPH_TREE_RIGHT)); + } + + last = ! (*(dropin + 1) && startswith(*(dropin + 1), dir)); + + if (terminal_urlify_path(*dropin, basename(*dropin), &dropin_formatted) >= 0) + df = dropin_formatted; + else + df = *dropin; + + printf("%s%s", df, last ? "\n" : ", "); + } + } + + ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state; + if (ss) + printf(" Active: %s%s (%s)%s", + active_on, strna(i->active_state), ss, active_off); + else + printf(" Active: %s%s%s", + active_on, strna(i->active_state), active_off); + + fs = !isempty(i->freezer_state) && !streq(i->freezer_state, "running") ? i->freezer_state : NULL; + if (fs) + printf(" %s(%s)%s", ansi_highlight_yellow(), fs, ansi_normal()); + + if (!isempty(i->result) && !streq(i->result, "success")) + printf(" (Result: %s)", i->result); + + timestamp = STRPTR_IN_SET(i->active_state, "active", "reloading") ? i->active_enter_timestamp : + STRPTR_IN_SET(i->active_state, "inactive", "failed") ? i->inactive_enter_timestamp : + STRPTR_IN_SET(i->active_state, "activating") ? i->inactive_exit_timestamp : + i->active_exit_timestamp; + + s1 = format_timestamp_relative(since1, sizeof(since1), timestamp); + s2 = format_timestamp_style(since2, sizeof(since2), timestamp, arg_timestamp_style); + + if (s1) + printf(" since %s; %s\n", s2, s1); + else if (s2) + printf(" since %s\n", s2); + else + printf("\n"); + + STRV_FOREACH(t, i->triggered_by) { + UnitActiveState state = _UNIT_ACTIVE_STATE_INVALID; + + (void) get_state_one_unit(bus, *t, &state); + format_active_state(unit_active_state_to_string(state), &on, &off); + + printf("%s %s%s%s %s\n", + t == i->triggered_by ? "TriggeredBy:" : " ", + on, special_glyph(SPECIAL_GLYPH_BLACK_CIRCLE), off, + *t); + } + + if (endswith(i->id, ".timer")) { + char tstamp1[FORMAT_TIMESTAMP_RELATIVE_MAX], + tstamp2[FORMAT_TIMESTAMP_MAX]; + const char *next_rel_time, *next_time; + dual_timestamp nw, next = {i->next_elapse_real, + i->next_elapse_monotonic}; + usec_t next_elapse; + + printf(" Trigger: "); + + dual_timestamp_get(&nw); + next_elapse = calc_next_elapse(&nw, &next); + next_rel_time = format_timestamp_relative(tstamp1, sizeof tstamp1, next_elapse); + next_time = format_timestamp_style(tstamp2, sizeof tstamp2, next_elapse, arg_timestamp_style); + + if (next_time && next_rel_time) + printf("%s; %s\n", next_time, next_rel_time); + else + printf("n/a\n"); + } + + STRV_FOREACH(t, i->triggers) { + UnitActiveState state = _UNIT_ACTIVE_STATE_INVALID; + + (void) get_state_one_unit(bus, *t, &state); + format_active_state(unit_active_state_to_string(state), &on, &off); + + printf("%s %s%s%s %s\n", + t == i->triggers ? " Triggers:" : " ", + on, special_glyph(SPECIAL_GLYPH_BLACK_CIRCLE), off, + *t); + } + + if (!i->condition_result && i->condition_timestamp > 0) { + UnitCondition *c; + int n = 0; + + s1 = format_timestamp_relative(since1, sizeof(since1), i->condition_timestamp); + s2 = format_timestamp_style(since2, sizeof(since2), i->condition_timestamp, arg_timestamp_style); + + printf(" Condition: start %scondition failed%s at %s%s%s\n", + ansi_highlight_yellow(), ansi_normal(), + s2, s1 ? "; " : "", strempty(s1)); + + LIST_FOREACH(conditions, c, i->conditions) + if (c->tristate < 0) + n++; + + LIST_FOREACH(conditions, c, i->conditions) + if (c->tristate < 0) + printf(" %s %s=%s%s%s was not met\n", + --n ? special_glyph(SPECIAL_GLYPH_TREE_BRANCH) : special_glyph(SPECIAL_GLYPH_TREE_RIGHT), + c->name, + c->trigger ? "|" : "", + c->negate ? "!" : "", + c->param); + } + + if (!i->assert_result && i->assert_timestamp > 0) { + s1 = format_timestamp_relative(since1, sizeof(since1), i->assert_timestamp); + s2 = format_timestamp_style(since2, sizeof(since2), i->assert_timestamp, arg_timestamp_style); + + printf(" Assert: start %sassertion failed%s at %s%s%s\n", + ansi_highlight_red(), ansi_normal(), + s2, s1 ? "; " : "", strempty(s1)); + if (i->failed_assert_trigger) + printf(" none of the trigger assertions were met\n"); + else if (i->failed_assert) + printf(" %s=%s%s was not met\n", + i->failed_assert, + i->failed_assert_negate ? "!" : "", + i->failed_assert_parameter); + } + + if (i->sysfs_path) + printf(" Device: %s\n", i->sysfs_path); + if (i->where) + printf(" Where: %s\n", i->where); + if (i->what) + printf(" What: %s\n", i->what); + + STRV_FOREACH(t, i->documentation) { + _cleanup_free_ char *formatted = NULL; + const char *q; + + if (terminal_urlify(*t, NULL, &formatted) >= 0) + q = formatted; + else + q = *t; + + printf(" %*s %s\n", 9, t == i->documentation ? "Docs:" : "", q); + } + + STRV_FOREACH_PAIR(t, t2, i->listen) + printf(" %*s %s (%s)\n", 9, t == i->listen ? "Listen:" : "", *t2, *t); + + if (i->accept) { + printf(" Accepted: %u; Connected: %u;", i->n_accepted, i->n_connections); + if (i->n_refused) + printf(" Refused: %u", i->n_refused); + printf("\n"); + } + + LIST_FOREACH(exec, p, i->exec) { + _cleanup_free_ char *argv = NULL; + bool good; + + /* Only show exited processes here */ + if (p->code == 0) + continue; + + /* Don't print ExecXYZEx= properties here since it will appear as a + * duplicate of the non-Ex= variant. */ + if (endswith(p->name, "Ex")) + continue; + + argv = strv_join(p->argv, " "); + printf(" Process: "PID_FMT" %s=%s ", p->pid, p->name, strna(argv)); + + good = is_clean_exit(p->code, p->status, EXIT_CLEAN_DAEMON, NULL); + if (!good) { + on = ansi_highlight_red(); + off = ansi_normal(); + } else + on = off = ""; + + printf("%s(code=%s, ", on, sigchld_code_to_string(p->code)); + + if (p->code == CLD_EXITED) { + const char *c; + + printf("status=%i", p->status); + + c = exit_status_to_string(p->status, EXIT_STATUS_LIBC | EXIT_STATUS_SYSTEMD); + if (c) + printf("/%s", c); + + } else + printf("signal=%s", signal_to_string(p->status)); + + printf(")%s\n", off); + + if (i->main_pid == p->pid && + i->start_timestamp == p->start_timestamp && + i->exit_timestamp == p->start_timestamp) + /* Let's not show this twice */ + i->main_pid = 0; + + if (p->pid == i->control_pid) + i->control_pid = 0; + } + + if (i->main_pid > 0 || i->control_pid > 0) { + if (i->main_pid > 0) { + printf(" Main PID: "PID_FMT, i->main_pid); + + if (i->running) { + + if (arg_transport == BUS_TRANSPORT_LOCAL) { + _cleanup_free_ char *comm = NULL; + + (void) get_process_comm(i->main_pid, &comm); + if (comm) + printf(" (%s)", comm); + } + + } else if (i->exit_code > 0) { + printf(" (code=%s, ", sigchld_code_to_string(i->exit_code)); + + if (i->exit_code == CLD_EXITED) { + const char *c; + + printf("status=%i", i->exit_status); + + c = exit_status_to_string(i->exit_status, + EXIT_STATUS_LIBC | EXIT_STATUS_SYSTEMD); + if (c) + printf("/%s", c); + + } else + printf("signal=%s", signal_to_string(i->exit_status)); + printf(")"); + } + } + + if (i->control_pid > 0) { + _cleanup_free_ char *c = NULL; + + if (i->main_pid > 0) + fputs("; Control PID: ", stdout); + else + fputs("Cntrl PID: ", stdout); /* if first in column, abbreviated so it fits alignment */ + + printf(PID_FMT, i->control_pid); + + if (arg_transport == BUS_TRANSPORT_LOCAL) { + (void) get_process_comm(i->control_pid, &c); + if (c) + printf(" (%s)", c); + } + } + + printf("\n"); + } + + if (i->status_text) + printf(" Status: \"%s\"\n", i->status_text); + if (i->status_errno > 0) + printf(" Error: %i (%s)\n", i->status_errno, strerror_safe(i->status_errno)); + + if (i->ip_ingress_bytes != (uint64_t) -1 && i->ip_egress_bytes != (uint64_t) -1) { + char buf_in[FORMAT_BYTES_MAX], buf_out[FORMAT_BYTES_MAX]; + + printf(" IP: %s in, %s out\n", + format_bytes(buf_in, sizeof(buf_in), i->ip_ingress_bytes), + format_bytes(buf_out, sizeof(buf_out), i->ip_egress_bytes)); + } + + if (i->io_read_bytes != UINT64_MAX && i->io_write_bytes != UINT64_MAX) { + char buf_in[FORMAT_BYTES_MAX], buf_out[FORMAT_BYTES_MAX]; + + printf(" IO: %s read, %s written\n", + format_bytes(buf_in, sizeof(buf_in), i->io_read_bytes), + format_bytes(buf_out, sizeof(buf_out), i->io_write_bytes)); + } + + if (i->tasks_current != (uint64_t) -1) { + printf(" Tasks: %" PRIu64, i->tasks_current); + + if (i->tasks_max != (uint64_t) -1) + printf(" (limit: %" PRIu64 ")\n", i->tasks_max); + else + printf("\n"); + } + + if (i->memory_current != (uint64_t) -1) { + char buf[FORMAT_BYTES_MAX]; + + printf(" Memory: %s", format_bytes(buf, sizeof(buf), i->memory_current)); + + if (i->memory_min > 0 || i->memory_low > 0 || + i->memory_high != CGROUP_LIMIT_MAX || i->memory_max != CGROUP_LIMIT_MAX || + i->memory_swap_max != CGROUP_LIMIT_MAX || + i->memory_limit != CGROUP_LIMIT_MAX) { + const char *prefix = ""; + + printf(" ("); + if (i->memory_min > 0) { + printf("%smin: %s", prefix, format_bytes_cgroup_protection(buf, sizeof(buf), i->memory_min)); + prefix = " "; + } + if (i->memory_low > 0) { + printf("%slow: %s", prefix, format_bytes_cgroup_protection(buf, sizeof(buf), i->memory_low)); + prefix = " "; + } + if (i->memory_high != CGROUP_LIMIT_MAX) { + printf("%shigh: %s", prefix, format_bytes(buf, sizeof(buf), i->memory_high)); + prefix = " "; + } + if (i->memory_max != CGROUP_LIMIT_MAX) { + printf("%smax: %s", prefix, format_bytes(buf, sizeof(buf), i->memory_max)); + prefix = " "; + } + if (i->memory_swap_max != CGROUP_LIMIT_MAX) { + printf("%sswap max: %s", prefix, format_bytes(buf, sizeof(buf), i->memory_swap_max)); + prefix = " "; + } + if (i->memory_limit != CGROUP_LIMIT_MAX) { + printf("%slimit: %s", prefix, format_bytes(buf, sizeof(buf), i->memory_limit)); + prefix = " "; + } + printf(")"); + } + printf("\n"); + } + + if (i->cpu_usage_nsec != (uint64_t) -1) { + char buf[FORMAT_TIMESPAN_MAX]; + printf(" CPU: %s\n", format_timespan(buf, sizeof(buf), i->cpu_usage_nsec / NSEC_PER_USEC, USEC_PER_MSEC)); + } + + if (i->control_group) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + static const char prefix[] = " "; + unsigned c; + + printf(" CGroup: %s\n", i->control_group); + + c = columns(); + if (c > sizeof(prefix) - 1) + c -= sizeof(prefix) - 1; + else + c = 0; + + r = unit_show_processes(bus, i->id, i->control_group, prefix, c, get_output_flags(), &error); + if (r == -EBADR) { + unsigned k = 0; + pid_t extra[2]; + + /* Fallback for older systemd versions where the GetUnitProcesses() call is not yet available */ + + if (i->main_pid > 0) + extra[k++] = i->main_pid; + + if (i->control_pid > 0) + extra[k++] = i->control_pid; + + show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, i->control_group, prefix, c, extra, k, get_output_flags()); + } else if (r < 0) + log_warning_errno(r, "Failed to dump process list for '%s', ignoring: %s", + i->id, bus_error_message(&error, r)); + } + + if (i->id && arg_transport == BUS_TRANSPORT_LOCAL) + show_journal_by_unit( + stdout, + i->id, + i->log_namespace, + arg_output, + 0, + i->inactive_exit_timestamp_monotonic, + arg_lines, + getuid(), + get_output_flags() | OUTPUT_BEGIN_NEWLINE, + SD_JOURNAL_LOCAL_ONLY, + arg_scope == UNIT_FILE_SYSTEM, + ellipsized); + + if (i->need_daemon_reload) + warn_unit_file_changed(i->id); +} + +static void show_unit_help(UnitStatusInfo *i) { + char **p; + + assert(i); + + if (!i->documentation) { + log_info("Documentation for %s not known.", i->id); + return; + } + + STRV_FOREACH(p, i->documentation) + if (startswith(*p, "man:")) + show_man_page(*p + 4, false); + else + log_info("Can't show: %s", *p); +} + +static int map_main_pid(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { + UnitStatusInfo *i = userdata; + uint32_t u; + int r; + + r = sd_bus_message_read(m, "u", &u); + if (r < 0) + return r; + + i->main_pid = (pid_t) u; + i->running = u > 0; + + return 0; +} + +static int map_load_error(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { + const char *message, **p = userdata; + int r; + + r = sd_bus_message_read(m, "(ss)", NULL, &message); + if (r < 0) + return r; + + if (!isempty(message)) + *p = message; + + return 0; +} + +static int map_listen(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { + const char *type, *path; + char ***p = userdata; + int r; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)"); + if (r < 0) + return r; + + while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0) { + + r = strv_extend(p, type); + if (r < 0) + return r; + + r = strv_extend(p, path); + if (r < 0) + return r; + } + if (r < 0) + return r; + + r = sd_bus_message_exit_container(m); + if (r < 0) + return r; + + return 0; +} + +static int map_conditions(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { + UnitStatusInfo *i = userdata; + const char *cond, *param; + int trigger, negate; + int32_t state; + int r; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sbbsi)"); + if (r < 0) + return r; + + while ((r = sd_bus_message_read(m, "(sbbsi)", &cond, &trigger, &negate, ¶m, &state)) > 0) { + _cleanup_(unit_condition_freep) UnitCondition *c = NULL; + + c = new(UnitCondition, 1); + if (!c) + return -ENOMEM; + + *c = (UnitCondition) { + .name = strdup(cond), + .param = strdup(param), + .trigger = trigger, + .negate = negate, + .tristate = state, + }; + + if (!c->name || !c->param) + return -ENOMEM; + + LIST_PREPEND(conditions, i->conditions, TAKE_PTR(c)); + } + if (r < 0) + return r; + + r = sd_bus_message_exit_container(m); + if (r < 0) + return r; + + return 0; +} + +static int map_asserts(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { + UnitStatusInfo *i = userdata; + const char *cond, *param; + int trigger, negate; + int32_t state; + int r; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sbbsi)"); + if (r < 0) + return r; + + while ((r = sd_bus_message_read(m, "(sbbsi)", &cond, &trigger, &negate, ¶m, &state)) > 0) { + if (state < 0 && (!trigger || !i->failed_assert)) { + i->failed_assert = cond; + i->failed_assert_trigger = trigger; + i->failed_assert_negate = negate; + i->failed_assert_parameter = param; + } + } + if (r < 0) + return r; + + r = sd_bus_message_exit_container(m); + if (r < 0) + return r; + + return 0; +} + +static int map_exec(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { + _cleanup_free_ ExecStatusInfo *info = NULL; + ExecStatusInfo *last; + UnitStatusInfo *i = userdata; + bool is_ex_prop = endswith(member, "Ex"); + int r; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, is_ex_prop ? "(sasasttttuii)" : "(sasbttttuii)"); + if (r < 0) + return r; + + info = new0(ExecStatusInfo, 1); + if (!info) + return -ENOMEM; + + LIST_FIND_TAIL(exec, i->exec, last); + + while ((r = exec_status_info_deserialize(m, info, is_ex_prop)) > 0) { + + info->name = strdup(member); + if (!info->name) + return -ENOMEM; + + LIST_INSERT_AFTER(exec, i->exec, last, info); + last = info; + + info = new0(ExecStatusInfo, 1); + if (!info) + return -ENOMEM; + } + if (r < 0) + return r; + + r = sd_bus_message_exit_container(m); + if (r < 0) + return r; + + return 0; +} + +static int print_property(const char *name, const char *expected_value, sd_bus_message *m, bool value, bool all) { + char bus_type; + const char *contents; + int r; + + assert(name); + assert(m); + + /* This is a low-level property printer, see print_status_info() for the nicer output */ + + r = sd_bus_message_peek_type(m, &bus_type, &contents); + if (r < 0) + return r; + + switch (bus_type) { + + case SD_BUS_TYPE_INT32: + if (endswith(name, "ActionExitStatus")) { + int32_t i; + + r = sd_bus_message_read_basic(m, bus_type, &i); + if (r < 0) + return r; + + if (i >= 0 && i <= 255) + bus_print_property_valuef(name, expected_value, value, "%"PRIi32, i); + else if (all) + bus_print_property_value(name, expected_value, value, "[not set]"); + + return 1; + } else if (streq(name, "NUMAPolicy")) { + int32_t i; + + r = sd_bus_message_read_basic(m, bus_type, &i); + if (r < 0) + return r; + + bus_print_property_valuef(name, expected_value, value, "%s", strna(mpol_to_string(i))); + + return 1; + } + break; + + case SD_BUS_TYPE_STRUCT: + + if (contents[0] == SD_BUS_TYPE_UINT32 && streq(name, "Job")) { + uint32_t u; + + r = sd_bus_message_read(m, "(uo)", &u, NULL); + if (r < 0) + return bus_log_parse_error(r); + + if (u > 0) + bus_print_property_valuef(name, expected_value, value, "%"PRIu32, u); + else if (all) + bus_print_property_value(name, expected_value, value, ""); + + return 1; + + } else if (contents[0] == SD_BUS_TYPE_STRING && streq(name, "Unit")) { + const char *s; + + r = sd_bus_message_read(m, "(so)", &s, NULL); + if (r < 0) + return bus_log_parse_error(r); + + if (all || !isempty(s)) + bus_print_property_value(name, expected_value, value, s); + + return 1; + + } else if (contents[0] == SD_BUS_TYPE_STRING && streq(name, "LoadError")) { + const char *a = NULL, *b = NULL; + + r = sd_bus_message_read(m, "(ss)", &a, &b); + if (r < 0) + return bus_log_parse_error(r); + + if (!isempty(a) || !isempty(b)) + bus_print_property_valuef(name, expected_value, value, "%s \"%s\"", strempty(a), strempty(b)); + else if (all) + bus_print_property_value(name, expected_value, value, ""); + + return 1; + + } else if (STR_IN_SET(name, "SystemCallFilter", "SystemCallLog", "RestrictAddressFamilies")) { + _cleanup_strv_free_ char **l = NULL; + int allow_list; + + r = sd_bus_message_enter_container(m, 'r', "bas"); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_read(m, "b", &allow_list); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_read_strv(m, &l); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + if (all || allow_list || !strv_isempty(l)) { + bool first = true; + char **i; + + if (!value) { + fputs(name, stdout); + fputc('=', stdout); + } + + if (!allow_list) + fputc('~', stdout); + + STRV_FOREACH(i, l) { + if (first) + first = false; + else + fputc(' ', stdout); + + fputs(*i, stdout); + } + fputc('\n', stdout); + } + + return 1; + + } else if (STR_IN_SET(name, "SELinuxContext", "AppArmorProfile", "SmackProcessLabel")) { + int ignore; + const char *s; + + r = sd_bus_message_read(m, "(bs)", &ignore, &s); + if (r < 0) + return bus_log_parse_error(r); + + if (!isempty(s)) + bus_print_property_valuef(name, expected_value, value, "%s%s", ignore ? "-" : "", s); + else if (all) + bus_print_property_value(name, expected_value, value, ""); + + return 1; + + } else if (endswith(name, "ExitStatus") && streq(contents, "aiai")) { + const int32_t *status, *signal; + size_t n_status, n_signal, i; + + r = sd_bus_message_enter_container(m, 'r', "aiai"); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_read_array(m, 'i', (const void **) &status, &n_status); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_read_array(m, 'i', (const void **) &signal, &n_signal); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + n_status /= sizeof(int32_t); + n_signal /= sizeof(int32_t); + + if (all || n_status > 0 || n_signal > 0) { + bool first = true; + + if (!value) { + fputs(name, stdout); + fputc('=', stdout); + } + + for (i = 0; i < n_status; i++) { + if (first) + first = false; + else + fputc(' ', stdout); + + printf("%"PRIi32, status[i]); + } + + for (i = 0; i < n_signal; i++) { + const char *str; + + str = signal_to_string((int) signal[i]); + + if (first) + first = false; + else + fputc(' ', stdout); + + if (str) + fputs(str, stdout); + else + printf("%"PRIi32, status[i]); + } + + fputc('\n', stdout); + } + return 1; + } + + break; + + case SD_BUS_TYPE_ARRAY: + + if (contents[0] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "EnvironmentFiles")) { + const char *path; + int ignore; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sb)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(sb)", &path, &ignore)) > 0) + bus_print_property_valuef(name, expected_value, value, "%s (ignore_errors=%s)", path, yes_no(ignore)); + + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 1; + + } else if (contents[0] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Paths")) { + const char *type, *path; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0) + bus_print_property_valuef(name, expected_value, value, "%s (%s)", path, type); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 1; + + } else if (contents[0] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Listen")) { + const char *type, *path; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0) + bus_print_property_valuef(name, expected_value, value, "%s (%s)", path, type); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 1; + + } else if (contents[0] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "TimersMonotonic")) { + const char *base; + uint64_t v, next_elapse; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(stt)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(stt)", &base, &v, &next_elapse)) > 0) { + char timespan1[FORMAT_TIMESPAN_MAX] = "n/a", timespan2[FORMAT_TIMESPAN_MAX] = "n/a"; + + (void) format_timespan(timespan1, sizeof timespan1, v, 0); + (void) format_timespan(timespan2, sizeof timespan2, next_elapse, 0); + + bus_print_property_valuef(name, expected_value, value, + "{ %s=%s ; next_elapse=%s }", base, timespan1, timespan2); + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 1; + + } else if (contents[0] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "TimersCalendar")) { + const char *base, *spec; + uint64_t next_elapse; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sst)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(sst)", &base, &spec, &next_elapse)) > 0) { + char timestamp[FORMAT_TIMESTAMP_MAX] = "n/a"; + + (void) format_timestamp_style(timestamp, sizeof(timestamp), next_elapse, arg_timestamp_style); + bus_print_property_valuef(name, expected_value, value, + "{ %s=%s ; next_elapse=%s }", base, spec, timestamp); + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 1; + + } else if (contents[0] == SD_BUS_TYPE_STRUCT_BEGIN && startswith(name, "Exec")) { + ExecStatusInfo info = {}; + bool is_ex_prop = endswith(name, "Ex"); + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, is_ex_prop ? "(sasasttttuii)" : "(sasbttttuii)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = exec_status_info_deserialize(m, &info, is_ex_prop)) > 0) { + char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX]; + _cleanup_strv_free_ char **optv = NULL; + _cleanup_free_ char *tt, *o = NULL; + + tt = strv_join(info.argv, " "); + + if (is_ex_prop) { + r = exec_command_flags_to_strv(info.flags, &optv); + if (r < 0) + return log_error_errno(r, "Failed to convert ExecCommandFlags to strv: %m"); + + o = strv_join(optv, " "); + + bus_print_property_valuef(name, expected_value, value, + "{ path=%s ; argv[]=%s ; flags=%s ; start_time=[%s] ; stop_time=[%s] ; pid="PID_FMT" ; code=%s ; status=%i%s%s }", + strna(info.path), + strna(tt), + strna(o), + strna(format_timestamp_style(timestamp1, sizeof(timestamp1), info.start_timestamp, arg_timestamp_style)), + strna(format_timestamp_style(timestamp2, sizeof(timestamp2), info.exit_timestamp, arg_timestamp_style)), + info.pid, + sigchld_code_to_string(info.code), + info.status, + info.code == CLD_EXITED ? "" : "/", + strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status))); + } else + bus_print_property_valuef(name, expected_value, value, + "{ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid="PID_FMT" ; code=%s ; status=%i%s%s }", + strna(info.path), + strna(tt), + yes_no(info.ignore), + strna(format_timestamp_style(timestamp1, sizeof(timestamp1), info.start_timestamp, arg_timestamp_style)), + strna(format_timestamp_style(timestamp2, sizeof(timestamp2), info.exit_timestamp, arg_timestamp_style)), + info.pid, + sigchld_code_to_string(info.code), + info.status, + info.code == CLD_EXITED ? "" : "/", + strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status))); + + free(info.path); + strv_free(info.argv); + zero(info); + } + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 1; + + } else if (contents[0] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "DeviceAllow")) { + const char *path, *rwm; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(ss)", &path, &rwm)) > 0) + bus_print_property_valuef(name, expected_value, value, "%s %s", strna(path), strna(rwm)); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 1; + + } else if (contents[0] == SD_BUS_TYPE_STRUCT_BEGIN && + STR_IN_SET(name, "IODeviceWeight", "BlockIODeviceWeight")) { + const char *path; + uint64_t weight; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(st)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(st)", &path, &weight)) > 0) + bus_print_property_valuef(name, expected_value, value, "%s %"PRIu64, strna(path), weight); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 1; + + } else if (contents[0] == SD_BUS_TYPE_STRUCT_BEGIN && + (cgroup_io_limit_type_from_string(name) >= 0 || + STR_IN_SET(name, "BlockIOReadBandwidth", "BlockIOWriteBandwidth"))) { + const char *path; + uint64_t bandwidth; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(st)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(st)", &path, &bandwidth)) > 0) + bus_print_property_valuef(name, expected_value, value, "%s %"PRIu64, strna(path), bandwidth); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 1; + + } else if (contents[0] == SD_BUS_TYPE_STRUCT_BEGIN && + streq(name, "IODeviceLatencyTargetUSec")) { + char ts[FORMAT_TIMESPAN_MAX]; + const char *path; + uint64_t target; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(st)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(st)", &path, &target)) > 0) + bus_print_property_valuef(name, expected_value, value, "%s %s", strna(path), + format_timespan(ts, sizeof(ts), target, 1)); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 1; + + } else if (contents[0] == SD_BUS_TYPE_BYTE && STR_IN_SET(name, "StandardInputData", "RootHashSignature")) { + _cleanup_free_ char *h = NULL; + const void *p; + size_t sz; + ssize_t n; + + r = sd_bus_message_read_array(m, 'y', &p, &sz); + if (r < 0) + return bus_log_parse_error(r); + + n = base64mem(p, sz, &h); + if (n < 0) + return log_oom(); + + bus_print_property_value(name, expected_value, value, h); + + return 1; + + } else if (STR_IN_SET(name, "IPAddressAllow", "IPAddressDeny")) { + _cleanup_free_ char *addresses = NULL; + + r = sd_bus_message_enter_container(m, 'a', "(iayu)"); + if (r < 0) + return bus_log_parse_error(r); + + for (;;) { + _cleanup_free_ char *str = NULL; + uint32_t prefixlen; + int32_t family; + const void *ap; + size_t an; + + r = sd_bus_message_enter_container(m, 'r', "iayu"); + if (r < 0) + return bus_log_parse_error(r); + if (r == 0) + break; + + r = sd_bus_message_read(m, "i", &family); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_read_array(m, 'y', &ap, &an); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_read(m, "u", &prefixlen); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + if (!IN_SET(family, AF_INET, AF_INET6)) + continue; + + if (an != FAMILY_ADDRESS_SIZE(family)) + continue; + + if (prefixlen > FAMILY_ADDRESS_SIZE(family) * 8) + continue; + + if (in_addr_prefix_to_string(family, (union in_addr_union *) ap, prefixlen, &str) < 0) + continue; + + if (!strextend_with_separator(&addresses, " ", str, NULL)) + return log_oom(); + } + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + if (all || !isempty(addresses)) + bus_print_property_value(name, expected_value, value, strempty(addresses)); + + return 1; + + } else if (STR_IN_SET(name, "BindPaths", "BindReadOnlyPaths")) { + _cleanup_free_ char *paths = NULL; + const char *source, *dest; + int ignore_enoent; + uint64_t rbind; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ssbt)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(ssbt)", &source, &dest, &ignore_enoent, &rbind)) > 0) { + _cleanup_free_ char *str = NULL; + + if (isempty(source)) + continue; + + if (asprintf(&str, "%s%s%s%s%s", + ignore_enoent ? "-" : "", + source, + isempty(dest) ? "" : ":", + strempty(dest), + rbind == MS_REC ? ":rbind" : "") < 0) + return log_oom(); + + if (!strextend_with_separator(&paths, " ", str, NULL)) + return log_oom(); + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + if (all || !isempty(paths)) + bus_print_property_value(name, expected_value, value, strempty(paths)); + + return 1; + + } else if (streq(name, "TemporaryFileSystem")) { + _cleanup_free_ char *paths = NULL; + const char *target, *option; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(ss)", &target, &option)) > 0) { + _cleanup_free_ char *str = NULL; + + if (isempty(target)) + continue; + + if (asprintf(&str, "%s%s%s", target, isempty(option) ? "" : ":", strempty(option)) < 0) + return log_oom(); + + if (!strextend_with_separator(&paths, " ", str, NULL)) + return log_oom(); + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + if (all || !isempty(paths)) + bus_print_property_value(name, expected_value, value, strempty(paths)); + + return 1; + + } else if (streq(name, "LogExtraFields")) { + _cleanup_free_ char *fields = NULL; + const void *p; + size_t sz; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "ay"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read_array(m, 'y', &p, &sz)) > 0) { + _cleanup_free_ char *str = NULL; + const char *eq; + + if (memchr(p, 0, sz)) + continue; + + eq = memchr(p, '=', sz); + if (!eq) + continue; + + if (!journal_field_valid(p, eq - (const char*) p, false)) + continue; + + str = malloc(sz + 1); + if (!str) + return log_oom(); + + memcpy(str, p, sz); + str[sz] = '\0'; + + if (!utf8_is_valid(str)) + continue; + + if (!strextend_with_separator(&fields, " ", str, NULL)) + return log_oom(); + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + if (all || !isempty(fields)) + bus_print_property_value(name, expected_value, value, strempty(fields)); + + return 1; + } else if (contents[0] == SD_BUS_TYPE_BYTE && STR_IN_SET(name, "CPUAffinity", "NUMAMask", "AllowedCPUs", "AllowedMemoryNodes", "EffectiveCPUs", "EffectiveMemoryNodes")) { + _cleanup_free_ char *affinity = NULL; + _cleanup_(cpu_set_reset) CPUSet set = {}; + const void *a; + size_t n; + + r = sd_bus_message_read_array(m, 'y', &a, &n); + if (r < 0) + return bus_log_parse_error(r); + + r = cpu_set_from_dbus(a, n, &set); + if (r < 0) + return log_error_errno(r, "Failed to deserialize %s: %m", name); + + affinity = cpu_set_to_range_string(&set); + if (!affinity) + return log_oom(); + + bus_print_property_value(name, expected_value, value, affinity); + + return 1; + } else if (streq(name, "MountImages")) { + _cleanup_free_ char *paths = NULL; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ssba(ss))"); + if (r < 0) + return bus_log_parse_error(r); + + for (;;) { + _cleanup_free_ char *str = NULL; + const char *source, *destination, *partition, *mount_options; + int ignore_enoent; + + r = sd_bus_message_enter_container(m, 'r', "ssba(ss)"); + if (r < 0) + return r; + + r = sd_bus_message_read(m, "ssb", &source, &destination, &ignore_enoent); + if (r <= 0) + break; + + str = strjoin(ignore_enoent ? "-" : "", + source, + ":", + destination); + if (!str) + return log_oom(); + + r = sd_bus_message_enter_container(m, 'a', "(ss)"); + if (r < 0) + return r; + + while ((r = sd_bus_message_read(m, "(ss)", &partition, &mount_options)) > 0) { + _cleanup_free_ char *previous = NULL; + + previous = TAKE_PTR(str); + str = strjoin(strempty(previous), previous ? ":" : "", partition, ":", mount_options); + if (!str) + return log_oom(); + } + if (r < 0) + return r; + + if (!strextend_with_separator(&paths, " ", str, NULL)) + return log_oom(); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return r; + + r = sd_bus_message_exit_container(m); + if (r < 0) + return r; + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + if (all || !isempty(paths)) + bus_print_property_value(name, expected_value, value, strempty(paths)); + + return 1; + + } + + break; + } + + return 0; +} + +typedef enum SystemctlShowMode{ + SYSTEMCTL_SHOW_PROPERTIES, + SYSTEMCTL_SHOW_STATUS, + SYSTEMCTL_SHOW_HELP, + _SYSTEMCTL_SHOW_MODE_MAX, + _SYSTEMCTL_SHOW_MODE_INVALID = -1, +} SystemctlShowMode; + +static const char* const systemctl_show_mode_table[_SYSTEMCTL_SHOW_MODE_MAX] = { + [SYSTEMCTL_SHOW_PROPERTIES] = "show", + [SYSTEMCTL_SHOW_STATUS] = "status", + [SYSTEMCTL_SHOW_HELP] = "help", +}; + +DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(systemctl_show_mode, SystemctlShowMode); + +static int show_one( + sd_bus *bus, + const char *path, + const char *unit, + SystemctlShowMode show_mode, + bool *new_line, + bool *ellipsized) { + + static const struct bus_properties_map property_map[] = { + { "LoadState", "s", NULL, offsetof(UnitStatusInfo, load_state) }, + { "ActiveState", "s", NULL, offsetof(UnitStatusInfo, active_state) }, + { "FreezerState", "s", NULL, offsetof(UnitStatusInfo, freezer_state) }, + { "Documentation", "as", NULL, offsetof(UnitStatusInfo, documentation) }, + {} + }, status_map[] = { + { "Id", "s", NULL, offsetof(UnitStatusInfo, id) }, + { "LoadState", "s", NULL, offsetof(UnitStatusInfo, load_state) }, + { "ActiveState", "s", NULL, offsetof(UnitStatusInfo, active_state) }, + { "FreezerState", "s", NULL, offsetof(UnitStatusInfo, freezer_state) }, + { "SubState", "s", NULL, offsetof(UnitStatusInfo, sub_state) }, + { "UnitFileState", "s", NULL, offsetof(UnitStatusInfo, unit_file_state) }, + { "UnitFilePreset", "s", NULL, offsetof(UnitStatusInfo, unit_file_preset) }, + { "Description", "s", NULL, offsetof(UnitStatusInfo, description) }, + { "Following", "s", NULL, offsetof(UnitStatusInfo, following) }, + { "Documentation", "as", NULL, offsetof(UnitStatusInfo, documentation) }, + { "FragmentPath", "s", NULL, offsetof(UnitStatusInfo, fragment_path) }, + { "SourcePath", "s", NULL, offsetof(UnitStatusInfo, source_path) }, + { "ControlGroup", "s", NULL, offsetof(UnitStatusInfo, control_group) }, + { "DropInPaths", "as", NULL, offsetof(UnitStatusInfo, dropin_paths) }, + { "LoadError", "(ss)", map_load_error, offsetof(UnitStatusInfo, load_error) }, + { "Result", "s", NULL, offsetof(UnitStatusInfo, result) }, + { "TriggeredBy", "as", NULL, offsetof(UnitStatusInfo, triggered_by) }, + { "Triggers", "as", NULL, offsetof(UnitStatusInfo, triggers) }, + { "InactiveExitTimestamp", "t", NULL, offsetof(UnitStatusInfo, inactive_exit_timestamp) }, + { "InactiveExitTimestampMonotonic", "t", NULL, offsetof(UnitStatusInfo, inactive_exit_timestamp_monotonic) }, + { "ActiveEnterTimestamp", "t", NULL, offsetof(UnitStatusInfo, active_enter_timestamp) }, + { "ActiveExitTimestamp", "t", NULL, offsetof(UnitStatusInfo, active_exit_timestamp) }, + { "InactiveEnterTimestamp", "t", NULL, offsetof(UnitStatusInfo, inactive_enter_timestamp) }, + { "NeedDaemonReload", "b", NULL, offsetof(UnitStatusInfo, need_daemon_reload) }, + { "Transient", "b", NULL, offsetof(UnitStatusInfo, transient) }, + { "ExecMainPID", "u", NULL, offsetof(UnitStatusInfo, main_pid) }, + { "MainPID", "u", map_main_pid, 0 }, + { "ControlPID", "u", NULL, offsetof(UnitStatusInfo, control_pid) }, + { "StatusText", "s", NULL, offsetof(UnitStatusInfo, status_text) }, + { "PIDFile", "s", NULL, offsetof(UnitStatusInfo, pid_file) }, + { "StatusErrno", "i", NULL, offsetof(UnitStatusInfo, status_errno) }, + { "ExecMainStartTimestamp", "t", NULL, offsetof(UnitStatusInfo, start_timestamp) }, + { "ExecMainExitTimestamp", "t", NULL, offsetof(UnitStatusInfo, exit_timestamp) }, + { "ExecMainCode", "i", NULL, offsetof(UnitStatusInfo, exit_code) }, + { "ExecMainStatus", "i", NULL, offsetof(UnitStatusInfo, exit_status) }, + { "LogNamespace", "s", NULL, offsetof(UnitStatusInfo, log_namespace) }, + { "ConditionTimestamp", "t", NULL, offsetof(UnitStatusInfo, condition_timestamp) }, + { "ConditionResult", "b", NULL, offsetof(UnitStatusInfo, condition_result) }, + { "Conditions", "a(sbbsi)", map_conditions, 0 }, + { "AssertTimestamp", "t", NULL, offsetof(UnitStatusInfo, assert_timestamp) }, + { "AssertResult", "b", NULL, offsetof(UnitStatusInfo, assert_result) }, + { "Asserts", "a(sbbsi)", map_asserts, 0 }, + { "NextElapseUSecRealtime", "t", NULL, offsetof(UnitStatusInfo, next_elapse_real) }, + { "NextElapseUSecMonotonic", "t", NULL, offsetof(UnitStatusInfo, next_elapse_monotonic) }, + { "NAccepted", "u", NULL, offsetof(UnitStatusInfo, n_accepted) }, + { "NConnections", "u", NULL, offsetof(UnitStatusInfo, n_connections) }, + { "NRefused", "u", NULL, offsetof(UnitStatusInfo, n_refused) }, + { "Accept", "b", NULL, offsetof(UnitStatusInfo, accept) }, + { "Listen", "a(ss)", map_listen, offsetof(UnitStatusInfo, listen) }, + { "SysFSPath", "s", NULL, offsetof(UnitStatusInfo, sysfs_path) }, + { "Where", "s", NULL, offsetof(UnitStatusInfo, where) }, + { "What", "s", NULL, offsetof(UnitStatusInfo, what) }, + { "MemoryCurrent", "t", NULL, offsetof(UnitStatusInfo, memory_current) }, + { "DefaultMemoryMin", "t", NULL, offsetof(UnitStatusInfo, default_memory_min) }, + { "DefaultMemoryLow", "t", NULL, offsetof(UnitStatusInfo, default_memory_low) }, + { "MemoryMin", "t", NULL, offsetof(UnitStatusInfo, memory_min) }, + { "MemoryLow", "t", NULL, offsetof(UnitStatusInfo, memory_low) }, + { "MemoryHigh", "t", NULL, offsetof(UnitStatusInfo, memory_high) }, + { "MemoryMax", "t", NULL, offsetof(UnitStatusInfo, memory_max) }, + { "MemorySwapMax", "t", NULL, offsetof(UnitStatusInfo, memory_swap_max) }, + { "MemoryLimit", "t", NULL, offsetof(UnitStatusInfo, memory_limit) }, + { "CPUUsageNSec", "t", NULL, offsetof(UnitStatusInfo, cpu_usage_nsec) }, + { "TasksCurrent", "t", NULL, offsetof(UnitStatusInfo, tasks_current) }, + { "TasksMax", "t", NULL, offsetof(UnitStatusInfo, tasks_max) }, + { "IPIngressBytes", "t", NULL, offsetof(UnitStatusInfo, ip_ingress_bytes) }, + { "IPEgressBytes", "t", NULL, offsetof(UnitStatusInfo, ip_egress_bytes) }, + { "IOReadBytes", "t", NULL, offsetof(UnitStatusInfo, io_read_bytes) }, + { "IOWriteBytes", "t", NULL, offsetof(UnitStatusInfo, io_write_bytes) }, + { "ExecCondition", "a(sasbttttuii)", map_exec, 0 }, + { "ExecConditionEx", "a(sasasttttuii)", map_exec, 0 }, + { "ExecStartPre", "a(sasbttttuii)", map_exec, 0 }, + { "ExecStartPreEx", "a(sasasttttuii)", map_exec, 0 }, + { "ExecStart", "a(sasbttttuii)", map_exec, 0 }, + { "ExecStartEx", "a(sasasttttuii)", map_exec, 0 }, + { "ExecStartPost", "a(sasbttttuii)", map_exec, 0 }, + { "ExecStartPostEx", "a(sasasttttuii)", map_exec, 0 }, + { "ExecReload", "a(sasbttttuii)", map_exec, 0 }, + { "ExecReloadEx", "a(sasasttttuii)", map_exec, 0 }, + { "ExecStopPre", "a(sasbttttuii)", map_exec, 0 }, + { "ExecStop", "a(sasbttttuii)", map_exec, 0 }, + { "ExecStopEx", "a(sasasttttuii)", map_exec, 0 }, + { "ExecStopPost", "a(sasbttttuii)", map_exec, 0 }, + { "ExecStopPostEx", "a(sasasttttuii)", map_exec, 0 }, + {} + }; + + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_set_free_ Set *found_properties = NULL; + _cleanup_(unit_status_info_free) UnitStatusInfo info = { + .memory_current = (uint64_t) -1, + .memory_high = CGROUP_LIMIT_MAX, + .memory_max = CGROUP_LIMIT_MAX, + .memory_swap_max = CGROUP_LIMIT_MAX, + .memory_limit = (uint64_t) -1, + .cpu_usage_nsec = (uint64_t) -1, + .tasks_current = (uint64_t) -1, + .tasks_max = (uint64_t) -1, + .ip_ingress_bytes = (uint64_t) -1, + .ip_egress_bytes = (uint64_t) -1, + .io_read_bytes = UINT64_MAX, + .io_write_bytes = UINT64_MAX, + }; + char **pp; + int r; + + assert(path); + assert(new_line); + + log_debug("Showing one %s", path); + + r = bus_map_all_properties( + bus, + "org.freedesktop.systemd1", + path, + show_mode == SYSTEMCTL_SHOW_STATUS ? status_map : property_map, + BUS_MAP_BOOLEAN_AS_BOOL, + &error, + &reply, + &info); + if (r < 0) + return log_error_errno(r, "Failed to get properties: %s", bus_error_message(&error, r)); + + if (unit && streq_ptr(info.load_state, "not-found") && streq_ptr(info.active_state, "inactive")) { + log_full(show_mode == SYSTEMCTL_SHOW_STATUS ? LOG_ERR : LOG_DEBUG, + "Unit %s could not be found.", unit); + + if (show_mode == SYSTEMCTL_SHOW_STATUS) + return EXIT_PROGRAM_OR_SERVICES_STATUS_UNKNOWN; + else if (show_mode == SYSTEMCTL_SHOW_HELP) + return -ENOENT; + } + + if (*new_line) + printf("\n"); + + *new_line = true; + + if (show_mode == SYSTEMCTL_SHOW_STATUS) { + print_status_info(bus, &info, ellipsized); + + if (info.active_state && !STR_IN_SET(info.active_state, "active", "reloading")) + return EXIT_PROGRAM_NOT_RUNNING; + + return EXIT_PROGRAM_RUNNING_OR_SERVICE_OK; + + } else if (show_mode == SYSTEMCTL_SHOW_HELP) { + show_unit_help(&info); + return 0; + } + + r = sd_bus_message_rewind(reply, true); + if (r < 0) + return log_error_errno(r, "Failed to rewind: %s", bus_error_message(&error, r)); + + r = bus_message_print_all_properties(reply, print_property, arg_properties, arg_value, arg_all, &found_properties); + if (r < 0) + return bus_log_parse_error(r); + + STRV_FOREACH(pp, arg_properties) + if (!set_contains(found_properties, *pp)) + log_debug("Property %s does not exist.", *pp); + + return 0; +} + +static int get_unit_dbus_path_by_pid( + sd_bus *bus, + uint32_t pid, + char **unit) { + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + char *u; + int r; + + r = bus_call_method(bus, bus_systemd_mgr, "GetUnitByPID", &error, &reply, "u", pid); + if (r < 0) + return log_error_errno(r, "Failed to get unit for PID %"PRIu32": %s", pid, bus_error_message(&error, r)); + + r = sd_bus_message_read(reply, "o", &u); + if (r < 0) + return bus_log_parse_error(r); + + u = strdup(u); + if (!u) + return log_oom(); + + *unit = u; + return 0; +} + +static int show_all( + sd_bus *bus, + bool *new_line, + bool *ellipsized) { + + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_free_ UnitInfo *unit_infos = NULL; + const UnitInfo *u; + unsigned c; + int r, ret = 0; + + r = get_unit_list(bus, NULL, NULL, &unit_infos, 0, &reply); + if (r < 0) + return r; + + (void) pager_open(arg_pager_flags); + + c = (unsigned) r; + + typesafe_qsort(unit_infos, c, unit_info_compare); + + for (u = unit_infos; u < unit_infos + c; u++) { + _cleanup_free_ char *p = NULL; + + p = unit_dbus_path_from_name(u->id); + if (!p) + return log_oom(); + + r = show_one(bus, p, u->id, SYSTEMCTL_SHOW_STATUS, new_line, ellipsized); + if (r < 0) + return r; + else if (r > 0 && ret == 0) + ret = r; + } + + return ret; +} + +static int show_system_status(sd_bus *bus) { + char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], since2[FORMAT_TIMESTAMP_MAX]; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(machine_info_clear) struct machine_info mi = {}; + _cleanup_free_ char *hn = NULL; + const char *on, *off; + int r; + + hn = gethostname_malloc(); + if (!hn) + return log_oom(); + + r = bus_map_all_properties( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + machine_info_property_map, + BUS_MAP_STRDUP, + &error, + NULL, + &mi); + if (r < 0) + return log_error_errno(r, "Failed to read server status: %s", bus_error_message(&error, r)); + + if (streq_ptr(mi.state, "degraded")) { + on = ansi_highlight_red(); + off = ansi_normal(); + } else if (streq_ptr(mi.state, "running")) { + on = ansi_highlight_green(); + off = ansi_normal(); + } else { + on = ansi_highlight_yellow(); + off = ansi_normal(); + } + + printf("%s%s%s %s\n", on, special_glyph(SPECIAL_GLYPH_BLACK_CIRCLE), off, arg_host ? arg_host : hn); + + printf(" State: %s%s%s\n", + on, strna(mi.state), off); + + printf(" Jobs: %" PRIu32 " queued\n", mi.n_jobs); + printf(" Failed: %" PRIu32 " units\n", mi.n_failed_units); + + printf(" Since: %s; %s\n", + format_timestamp_style(since2, sizeof(since2), mi.timestamp, arg_timestamp_style), + format_timestamp_relative(since1, sizeof(since1), mi.timestamp)); + + printf(" CGroup: %s\n", mi.control_group ?: "/"); + if (IN_SET(arg_transport, + BUS_TRANSPORT_LOCAL, + BUS_TRANSPORT_MACHINE)) { + static const char prefix[] = " "; + unsigned c; + + c = columns(); + if (c > sizeof(prefix) - 1) + c -= sizeof(prefix) - 1; + else + c = 0; + + show_cgroup(SYSTEMD_CGROUP_CONTROLLER, strempty(mi.control_group), prefix, c, get_output_flags()); + } + + return 0; +} + +int show(int argc, char *argv[], void *userdata) { + bool new_line = false, ellipsized = false; + SystemctlShowMode show_mode; + int r, ret = 0; + sd_bus *bus; + + assert(argv); + + show_mode = systemctl_show_mode_from_string(argv[0]); + if (show_mode < 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Invalid argument."); + + if (show_mode == SYSTEMCTL_SHOW_HELP && argc <= 1) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "'help' command expects one or more unit names.\n" + "(Alternatively, help for systemctl itself may be shown with --help)"); + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + (void) pager_open(arg_pager_flags); + + /* If no argument is specified inspect the manager itself */ + if (show_mode == SYSTEMCTL_SHOW_PROPERTIES && argc <= 1) + return show_one(bus, "/org/freedesktop/systemd1", NULL, show_mode, &new_line, &ellipsized); + + if (show_mode == SYSTEMCTL_SHOW_STATUS && argc <= 1) { + + show_system_status(bus); + new_line = true; + + if (arg_all) + ret = show_all(bus, &new_line, &ellipsized); + } else { + _cleanup_free_ char **patterns = NULL; + char **name; + + STRV_FOREACH(name, strv_skip(argv, 1)) { + _cleanup_free_ char *path = NULL, *unit = NULL; + uint32_t id; + + if (safe_atou32(*name, &id) < 0) { + if (strv_push(&patterns, *name) < 0) + return log_oom(); + + continue; + } else if (show_mode == SYSTEMCTL_SHOW_PROPERTIES) { + /* Interpret as job id */ + if (asprintf(&path, "/org/freedesktop/systemd1/job/%u", id) < 0) + return log_oom(); + + } else { + /* Interpret as PID */ + r = get_unit_dbus_path_by_pid(bus, id, &path); + if (r < 0) { + ret = r; + continue; + } + + r = unit_name_from_dbus_path(path, &unit); + if (r < 0) + return log_oom(); + } + + r = show_one(bus, path, unit, show_mode, &new_line, &ellipsized); + if (r < 0) + return r; + else if (r > 0 && ret == 0) + ret = r; + } + + if (!strv_isempty(patterns)) { + _cleanup_strv_free_ char **names = NULL; + + r = expand_unit_names(bus, patterns, NULL, &names, NULL); + if (r < 0) + return log_error_errno(r, "Failed to expand names: %m"); + + r = maybe_extend_with_unit_dependencies(bus, &names); + if (r < 0) + return r; + + STRV_FOREACH(name, names) { + _cleanup_free_ char *path; + + path = unit_dbus_path_from_name(*name); + if (!path) + return log_oom(); + + r = show_one(bus, path, *name, show_mode, &new_line, &ellipsized); + if (r < 0) + return r; + if (r > 0 && ret == 0) + ret = r; + } + } + } + + if (ellipsized && !arg_quiet) + printf("Hint: Some lines were ellipsized, use -l to show in full.\n"); + + return ret; +} diff --git a/src/systemctl/systemctl-show.h b/src/systemctl/systemctl-show.h new file mode 100644 index 0000000..d778beb --- /dev/null +++ b/src/systemctl/systemctl-show.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int show(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-start-special.c b/src/systemctl/systemctl-start-special.c new file mode 100644 index 0000000..15d2ea7 --- /dev/null +++ b/src/systemctl/systemctl-start-special.c @@ -0,0 +1,248 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bootspec.h" +#include "bus-error.h" +#include "bus-locator.h" +#include "efivars.h" +#include "parse-util.h" +#include "path-util.h" +#include "process-util.h" +#include "reboot-util.h" +#include "systemctl-logind.h" +#include "systemctl-start-special.h" +#include "systemctl-start-unit.h" +#include "systemctl-trivial-method.h" +#include "systemctl-util.h" +#include "systemctl.h" + +static int load_kexec_kernel(void) { + _cleanup_(boot_config_free) BootConfig config = {}; + _cleanup_free_ char *kernel = NULL, *initrd = NULL, *options = NULL; + const BootEntry *e; + pid_t pid; + int r; + + if (kexec_loaded()) { + log_debug("Kexec kernel already loaded."); + return 0; + } + + if (access(KEXEC, X_OK) < 0) + return log_error_errno(errno, KEXEC" is not available: %m"); + + r = boot_entries_load_config_auto(NULL, NULL, &config); + if (r == -ENOKEY) + /* The call doesn't log about ENOKEY, let's do so here. */ + return log_error_errno(r, + "No kexec kernel loaded and autodetection failed.\n%s", + is_efi_boot() + ? "Cannot automatically load kernel: ESP partition mount point not found." + : "Automatic loading works only on systems booted with EFI."); + if (r < 0) + return r; + + e = boot_config_default_entry(&config); + if (!e) + return log_error_errno(SYNTHETIC_ERRNO(ENOENT), + "No boot loader entry suitable as default, refusing to guess."); + + log_debug("Found default boot loader entry in file \"%s\"", e->path); + + if (!e->kernel) + return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), + "Boot entry does not refer to Linux kernel, which is not supported currently."); + if (strv_length(e->initrd) > 1) + return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), + "Boot entry specifies multiple initrds, which is not supported currently."); + + kernel = path_join(e->root, e->kernel); + if (!kernel) + return log_oom(); + + if (!strv_isempty(e->initrd)) { + initrd = path_join(e->root, e->initrd[0]); + if (!initrd) + return log_oom(); + } + + options = strv_join(e->options, " "); + if (!options) + return log_oom(); + + log_full(arg_quiet ? LOG_DEBUG : LOG_INFO, + "%s "KEXEC" --load \"%s\" --append \"%s\"%s%s%s", + arg_dry_run ? "Would run" : "Running", + kernel, + options, + initrd ? " --initrd \"" : NULL, strempty(initrd), initrd ? "\"" : ""); + if (arg_dry_run) + return 0; + + r = safe_fork("(kexec)", FORK_WAIT|FORK_RESET_SIGNALS|FORK_DEATHSIG|FORK_RLIMIT_NOFILE_SAFE|FORK_LOG, &pid); + if (r < 0) + return r; + if (r == 0) { + const char* const args[] = { + KEXEC, + "--load", kernel, + "--append", options, + initrd ? "--initrd" : NULL, initrd, + NULL + }; + + /* Child */ + execv(args[0], (char * const *) args); + _exit(EXIT_FAILURE); + } + + return 0; +} + +static int set_exit_code(uint8_t code) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = bus_call_method(bus, bus_systemd_mgr, "SetExitCode", &error, NULL, "y", code); + if (r < 0) + return log_error_errno(r, "Failed to set exit code: %s", bus_error_message(&error, r)); + + return 0; +} + +int start_special(int argc, char *argv[], void *userdata) { + bool termination_action; /* An action that terminates the manager, can be performed also by + * signal. */ + enum action a; + int r; + + assert(argv); + + a = verb_to_action(argv[0]); + + r = logind_check_inhibitors(a); + if (r < 0) + return r; + + if (arg_force >= 2) { + r = must_be_root(); + if (r < 0) + return r; + } + + r = prepare_firmware_setup(); + if (r < 0) + return r; + + r = prepare_boot_loader_menu(); + if (r < 0) + return r; + + r = prepare_boot_loader_entry(); + if (r < 0) + return r; + + if (a == ACTION_REBOOT) { + const char *arg = NULL; + + if (argc > 1) { + if (arg_reboot_argument) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Both --reboot-argument= and positional argument passed to reboot command, refusing."); + + log_notice("Positional argument to reboot command is deprecated, please use --reboot-argument= instead. Accepting anyway."); + arg = argv[1]; + } else + arg = arg_reboot_argument; + + if (arg) { + r = update_reboot_parameter_and_warn(arg, false); + if (r < 0) + return r; + } + + } else if (a == ACTION_KEXEC) { + r = load_kexec_kernel(); + if (r < 0 && arg_force >= 1) + log_notice("Failed to load kexec kernel, continuing without."); + else if (r < 0) + return r; + + } else if (a == ACTION_EXIT && argc > 1) { + uint8_t code; + + /* If the exit code is not given on the command line, don't reset it to zero: just keep it as + * it might have been set previously. */ + + r = safe_atou8(argv[1], &code); + if (r < 0) + return log_error_errno(r, "Invalid exit code."); + + r = set_exit_code(code); + if (r < 0) + return r; + } + + termination_action = IN_SET(a, + ACTION_HALT, + ACTION_POWEROFF, + ACTION_REBOOT); + if (termination_action && arg_force >= 2) + return halt_now(a); + + if (arg_force >= 1 && + (termination_action || IN_SET(a, ACTION_KEXEC, ACTION_EXIT))) + r = trivial_method(argc, argv, userdata); + else { + /* First try logind, to allow authentication with polkit */ + if (IN_SET(a, + ACTION_POWEROFF, + ACTION_REBOOT, + ACTION_HALT, + ACTION_SUSPEND, + ACTION_HIBERNATE, + ACTION_HYBRID_SLEEP, + ACTION_SUSPEND_THEN_HIBERNATE)) { + + r = logind_reboot(a); + if (r >= 0) + return r; + if (IN_SET(r, -EOPNOTSUPP, -EINPROGRESS)) + /* Requested operation is not supported or already in progress */ + return r; + + /* On all other errors, try low-level operation. In order to minimize the difference + * between operation with and without logind, we explicitly enable non-blocking mode + * for this, as logind's shutdown operations are always non-blocking. */ + + arg_no_block = true; + + } else if (IN_SET(a, ACTION_EXIT, ACTION_KEXEC)) + /* Since exit/kexec are so close in behaviour to power-off/reboot, let's also make + * them asynchronous, in order to not confuse the user needlessly with unexpected + * behaviour. */ + arg_no_block = true; + + r = start_unit(argc, argv, userdata); + } + + if (termination_action && arg_force < 2 && + IN_SET(r, -ENOENT, -ETIMEDOUT)) + log_notice("It is possible to perform action directly, see discussion of --force --force in man:systemctl(1)."); + + return r; +} + +int start_system_special(int argc, char *argv[], void *userdata) { + /* Like start_special above, but raises an error when running in user mode */ + + if (arg_scope != UNIT_FILE_SYSTEM) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Bad action for %s mode.", + arg_scope == UNIT_FILE_GLOBAL ? "--global" : "--user"); + + return start_special(argc, argv, userdata); +} diff --git a/src/systemctl/systemctl-start-special.h b/src/systemctl/systemctl-start-special.h new file mode 100644 index 0000000..06875e9 --- /dev/null +++ b/src/systemctl/systemctl-start-special.h @@ -0,0 +1,5 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int start_special(int argc, char *argv[], void *userdata); +int start_system_special(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-start-unit.c b/src/systemctl/systemctl-start-unit.c new file mode 100644 index 0000000..b398e77 --- /dev/null +++ b/src/systemctl/systemctl-start-unit.c @@ -0,0 +1,368 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "sd-bus.h" + +#include "bus-common-errors.h" +#include "bus-error.h" +#include "bus-locator.h" +#include "bus-util.h" +#include "bus-wait-for-jobs.h" +#include "bus-wait-for-units.h" +#include "macro.h" +#include "special.h" +#include "string-util.h" +#include "systemctl-start-unit.h" +#include "systemctl-util.h" +#include "systemctl.h" +#include "terminal-util.h" + +static const struct { + const char *verb; /* systemctl verb */ + const char *method; /* Name of the specific D-Bus method */ + const char *job_type; /* Job type when passing to the generic EnqueueUnitJob() method */ +} unit_actions[] = { + { "start", "StartUnit", "start" }, + { "stop", "StopUnit", "stop" }, + { "condstop", "StopUnit", "stop" }, /* legacy alias */ + { "reload", "ReloadUnit", "reload" }, + { "restart", "RestartUnit", "restart" }, + { "try-restart", "TryRestartUnit", "try-restart" }, + { "condrestart", "TryRestartUnit", "try-restart" }, /* legacy alias */ + { "reload-or-restart", "ReloadOrRestartUnit", "reload-or-restart" }, + { "try-reload-or-restart", "ReloadOrTryRestartUnit", "reload-or-try-restart" }, + { "reload-or-try-restart", "ReloadOrTryRestartUnit", "reload-or-try-restart" }, /* legacy alias */ + { "condreload", "ReloadOrTryRestartUnit", "reload-or-try-restart" }, /* legacy alias */ + { "force-reload", "ReloadOrTryRestartUnit", "reload-or-try-restart" }, /* legacy alias */ +}; + +static const char *verb_to_method(const char *verb) { + size_t i; + + for (i = 0; i < ELEMENTSOF(unit_actions); i++) + if (streq_ptr(unit_actions[i].verb, verb)) + return unit_actions[i].method; + + return "StartUnit"; +} + +static const char *verb_to_job_type(const char *verb) { + size_t i; + + for (i = 0; i < ELEMENTSOF(unit_actions); i++) + if (streq_ptr(unit_actions[i].verb, verb)) + return unit_actions[i].job_type; + + return "start"; +} + +static int start_unit_one( + sd_bus *bus, + const char *method, /* When using classic per-job bus methods */ + const char *job_type, /* When using new-style EnqueueUnitJob() */ + const char *name, + const char *mode, + sd_bus_error *error, + BusWaitForJobs *w, + BusWaitForUnits *wu) { + + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + const char *path; + bool done = false; + int r; + + assert(method); + assert(name); + assert(mode); + assert(error); + + log_debug("%s dbus call org.freedesktop.systemd1.Manager %s(%s, %s)", + arg_dry_run ? "Would execute" : "Executing", + method, name, mode); + + if (arg_dry_run) + return 0; + + if (arg_show_transaction) { + _cleanup_(sd_bus_error_free) sd_bus_error enqueue_error = SD_BUS_ERROR_NULL; + + /* Use the new, fancy EnqueueUnitJob() API if the user wants us to print the transaction */ + r = bus_call_method( + bus, + bus_systemd_mgr, + "EnqueueUnitJob", + &enqueue_error, + &reply, + "sss", + name, job_type, mode); + if (r < 0) { + if (!sd_bus_error_has_name(&enqueue_error, SD_BUS_ERROR_UNKNOWN_METHOD)) { + (void) sd_bus_error_move(error, &enqueue_error); + goto fail; + } + + /* Hmm, the API is not yet available. Let's use the classic API instead (see below). */ + log_notice("--show-transaction not supported by this service manager, proceeding without."); + } else { + const char *u, *jt; + uint32_t id; + + r = sd_bus_message_read(reply, "uosos", &id, &path, &u, NULL, &jt); + if (r < 0) + return bus_log_parse_error(r); + + log_info("Enqueued anchor job %" PRIu32 " %s/%s.", id, u, jt); + + r = sd_bus_message_enter_container(reply, 'a', "(uosos)"); + if (r < 0) + return bus_log_parse_error(r); + for (;;) { + r = sd_bus_message_read(reply, "(uosos)", &id, NULL, &u, NULL, &jt); + if (r < 0) + return bus_log_parse_error(r); + if (r == 0) + break; + + log_info("Enqueued auxiliary job %" PRIu32 " %s/%s.", id, u, jt); + } + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + done = true; + } + } + + if (!done) { + r = bus_call_method(bus, bus_systemd_mgr, method, error, &reply, "ss", name, mode); + if (r < 0) + goto fail; + + r = sd_bus_message_read(reply, "o", &path); + if (r < 0) + return bus_log_parse_error(r); + } + + if (need_daemon_reload(bus, name) > 0) + warn_unit_file_changed(name); + + if (w) { + log_debug("Adding %s to the set", path); + r = bus_wait_for_jobs_add(w, path); + if (r < 0) + return log_error_errno(r, "Failed to watch job for %s: %m", name); + } + + if (wu) { + r = bus_wait_for_units_add_unit(wu, name, BUS_WAIT_FOR_INACTIVE|BUS_WAIT_NO_JOB, NULL, NULL); + if (r < 0) + return log_error_errno(r, "Failed to watch unit %s: %m", name); + } + + return 0; + +fail: + /* There's always a fallback possible for legacy actions. */ + if (arg_action != ACTION_SYSTEMCTL) + return r; + + log_error_errno(r, "Failed to %s %s: %s", job_type, name, bus_error_message(error, r)); + + if (!sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT, + BUS_ERROR_UNIT_MASKED, + BUS_ERROR_JOB_TYPE_NOT_APPLICABLE)) + log_error("See %s logs and 'systemctl%s status%s %s' for details.", + arg_scope == UNIT_FILE_SYSTEM ? "system" : "user", + arg_scope == UNIT_FILE_SYSTEM ? "" : " --user", + name[0] == '-' ? " --" : "", + name); + + return r; +} + +const struct action_metadata action_table[_ACTION_MAX] = { + [ACTION_HALT] = { SPECIAL_HALT_TARGET, "halt", "replace-irreversibly" }, + [ACTION_POWEROFF] = { SPECIAL_POWEROFF_TARGET, "poweroff", "replace-irreversibly" }, + [ACTION_REBOOT] = { SPECIAL_REBOOT_TARGET, "reboot", "replace-irreversibly" }, + [ACTION_KEXEC] = { SPECIAL_KEXEC_TARGET, "kexec", "replace-irreversibly" }, + [ACTION_RUNLEVEL2] = { SPECIAL_MULTI_USER_TARGET, NULL, "isolate" }, + [ACTION_RUNLEVEL3] = { SPECIAL_MULTI_USER_TARGET, NULL, "isolate" }, + [ACTION_RUNLEVEL4] = { SPECIAL_MULTI_USER_TARGET, NULL, "isolate" }, + [ACTION_RUNLEVEL5] = { SPECIAL_GRAPHICAL_TARGET, NULL, "isolate" }, + [ACTION_RESCUE] = { SPECIAL_RESCUE_TARGET, "rescue", "isolate" }, + [ACTION_EMERGENCY] = { SPECIAL_EMERGENCY_TARGET, "emergency", "isolate" }, + [ACTION_DEFAULT] = { SPECIAL_DEFAULT_TARGET, "default", "isolate" }, + [ACTION_EXIT] = { SPECIAL_EXIT_TARGET, "exit", "replace-irreversibly" }, + [ACTION_SUSPEND] = { SPECIAL_SUSPEND_TARGET, "suspend", "replace-irreversibly" }, + [ACTION_HIBERNATE] = { SPECIAL_HIBERNATE_TARGET, "hibernate", "replace-irreversibly" }, + [ACTION_HYBRID_SLEEP] = { SPECIAL_HYBRID_SLEEP_TARGET, "hybrid-sleep", "replace-irreversibly" }, + [ACTION_SUSPEND_THEN_HIBERNATE] = { SPECIAL_SUSPEND_THEN_HIBERNATE_TARGET, "suspend-then-hibernate", "replace-irreversibly" }, +}; + +enum action verb_to_action(const char *verb) { + enum action i; + + for (i = 0; i < _ACTION_MAX; i++) + if (streq_ptr(action_table[i].verb, verb)) + return i; + + return _ACTION_INVALID; +} + +static const char** make_extra_args(const char *extra_args[static 4]) { + size_t n = 0; + + assert(extra_args); + + if (arg_scope != UNIT_FILE_SYSTEM) + extra_args[n++] = "--user"; + + if (arg_transport == BUS_TRANSPORT_REMOTE) { + extra_args[n++] = "-H"; + extra_args[n++] = arg_host; + } else if (arg_transport == BUS_TRANSPORT_MACHINE) { + extra_args[n++] = "-M"; + extra_args[n++] = arg_host; + } else + assert(arg_transport == BUS_TRANSPORT_LOCAL); + + extra_args[n] = NULL; + return extra_args; +} + +int start_unit(int argc, char *argv[], void *userdata) { + _cleanup_(bus_wait_for_units_freep) BusWaitForUnits *wu = NULL; + _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL; + const char *method, *job_type, *mode, *one_name, *suffix = NULL; + _cleanup_free_ char **stopped_units = NULL; /* Do not use _cleanup_strv_free_ */ + _cleanup_strv_free_ char **names = NULL; + int r, ret = EXIT_SUCCESS; + sd_bus *bus; + char **name; + + if (arg_wait && !STR_IN_SET(argv[0], "start", "restart")) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "--wait may only be used with the 'start' or 'restart' commands."); + + /* We cannot do sender tracking on the private bus, so we need the full one for RefUnit to implement + * --wait */ + r = acquire_bus(arg_wait ? BUS_FULL : BUS_MANAGER, &bus); + if (r < 0) + return r; + + ask_password_agent_open_maybe(); + polkit_agent_open_maybe(); + + if (arg_action == ACTION_SYSTEMCTL) { + enum action action; + + action = verb_to_action(argv[0]); + + if (action != _ACTION_INVALID) { + /* A command in style "systemctl reboot", "systemctl poweroff", … */ + method = "StartUnit"; + job_type = "start"; + mode = action_table[action].mode; + one_name = action_table[action].target; + } else { + if (streq(argv[0], "isolate")) { + /* A "systemctl isolate <unit1> <unit2> …" command */ + method = "StartUnit"; + job_type = "start"; + mode = "isolate"; + suffix = ".target"; + } else { + /* A command in style of "systemctl start <unit1> <unit2> …", "sysemctl stop <unit1> <unit2> …" and so on */ + method = verb_to_method(argv[0]); + job_type = verb_to_job_type(argv[0]); + mode = arg_job_mode; + } + one_name = NULL; + } + } else { + /* A SysV legacy command such as "halt", "reboot", "poweroff", … */ + assert(arg_action >= 0 && arg_action < _ACTION_MAX); + assert(action_table[arg_action].target); + assert(action_table[arg_action].mode); + + method = "StartUnit"; + job_type = "start"; + mode = action_table[arg_action].mode; + one_name = action_table[arg_action].target; + } + + if (one_name) { + names = strv_new(one_name); + if (!names) + return log_oom(); + } else { + bool expanded; + + r = expand_unit_names(bus, strv_skip(argv, 1), suffix, &names, &expanded); + if (r < 0) + return log_error_errno(r, "Failed to expand names: %m"); + + if (!arg_all && expanded && streq(job_type, "start") && !arg_quiet) { + log_warning("Warning: %ssystemctl start called with a glob pattern.%s", + ansi_highlight_red(), + ansi_normal()); + log_notice("Hint: unit globs expand to loaded units, so start will usually have no effect.\n" + " Passing --all will also load units which are pulled in by other units.\n" + " See systemctl(1) for more details."); + } + } + + if (!arg_no_block) { + r = bus_wait_for_jobs_new(bus, &w); + if (r < 0) + return log_error_errno(r, "Could not watch jobs: %m"); + } + + if (arg_wait) { + r = bus_call_method_async(bus, NULL, bus_systemd_mgr, "Subscribe", NULL, NULL, NULL); + if (r < 0) + return log_error_errno(r, "Failed to enable subscription: %m"); + + r = bus_wait_for_units_new(bus, &wu); + if (r < 0) + return log_error_errno(r, "Failed to allocate unit watch context: %m"); + } + + STRV_FOREACH(name, names) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + + r = start_unit_one(bus, method, job_type, *name, mode, &error, w, wu); + if (ret == EXIT_SUCCESS && r < 0) + ret = translate_bus_error_to_exit_status(r, &error); + + if (r >= 0 && streq(method, "StopUnit")) { + r = strv_push(&stopped_units, *name); + if (r < 0) + return log_oom(); + } + } + + if (!arg_no_block) { + const char* extra_args[4]; + + r = bus_wait_for_jobs(w, arg_quiet, make_extra_args(extra_args)); + if (r < 0) + return r; + + /* When stopping units, warn if they can still be triggered by + * another active unit (socket, path, timer) */ + if (!arg_quiet) + STRV_FOREACH(name, stopped_units) + (void) check_triggering_units(bus, *name); + } + + if (arg_wait) { + r = bus_wait_for_units_run(wu); + if (r < 0) + return log_error_errno(r, "Failed to wait for units: %m"); + if (r == BUS_WAIT_FAILURE && ret == EXIT_SUCCESS) + ret = EXIT_FAILURE; + } + + return ret; +} diff --git a/src/systemctl/systemctl-start-unit.h b/src/systemctl/systemctl-start-unit.h new file mode 100644 index 0000000..915c6fa --- /dev/null +++ b/src/systemctl/systemctl-start-unit.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#include "systemctl.h" + +int start_unit(int argc, char *argv[], void *userdata); + +struct action_metadata { + const char *target; + const char *verb; + const char *mode; +}; + +extern const struct action_metadata action_table[_ACTION_MAX]; + +enum action verb_to_action(const char *verb); diff --git a/src/systemctl/systemctl-switch-root.c b/src/systemctl/systemctl-switch-root.c new file mode 100644 index 0000000..9ed40e6 --- /dev/null +++ b/src/systemctl/systemctl-switch-root.c @@ -0,0 +1,77 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "parse-util.h" +#include "path-util.h" +#include "proc-cmdline.h" +#include "signal-util.h" +#include "stat-util.h" +#include "systemctl-switch-root.h" +#include "systemctl-util.h" +#include "systemctl.h" + +int switch_root(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_free_ char *cmdline_init = NULL; + const char *root, *init; + sd_bus *bus; + int r; + + if (arg_transport != BUS_TRANSPORT_LOCAL) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Cannot switch root remotely."); + + if (argc < 2 || argc > 3) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Wrong number of arguments."); + + root = argv[1]; + + if (argc >= 3) + init = argv[2]; + else { + r = proc_cmdline_get_key("init", 0, &cmdline_init); + if (r < 0) + log_debug_errno(r, "Failed to parse /proc/cmdline: %m"); + + init = cmdline_init; + } + + init = empty_to_null(init); + if (init) { + const char *root_systemd_path = NULL, *root_init_path = NULL; + + root_systemd_path = prefix_roota(root, "/" SYSTEMD_BINARY_PATH); + root_init_path = prefix_roota(root, init); + + /* If the passed init is actually the same as the systemd binary, then let's suppress it. */ + if (files_same(root_init_path, root_systemd_path, 0) > 0) + init = NULL; + } + + /* Instruct PID1 to exclude us from its killing spree applied during the transition. Otherwise we + * would exit with a failure status even though the switch to the new root has succeed. */ + assert(saved_argv); + assert(saved_argv[0]); + saved_argv[0][0] = '@'; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + /* If we are slow to exit after the root switch, the new systemd instance will send us a signal to + * terminate. Just ignore it and exit normally. This way the unit does not end up as failed. */ + r = ignore_signals(SIGTERM, -1); + if (r < 0) + log_warning_errno(r, "Failed to change disposition of SIGTERM to ignore: %m"); + + log_debug("Switching root - root: %s; init: %s", root, strna(init)); + + r = bus_call_method(bus, bus_systemd_mgr, "SwitchRoot", &error, NULL, "ss", root, init); + if (r < 0) { + (void) default_signals(SIGTERM, -1); + + return log_error_errno(r, "Failed to switch root: %s", bus_error_message(&error, r)); + } + + return 0; +} diff --git a/src/systemctl/systemctl-switch-root.h b/src/systemctl/systemctl-switch-root.h new file mode 100644 index 0000000..6e13961 --- /dev/null +++ b/src/systemctl/systemctl-switch-root.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int switch_root(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-sysv-compat.c b/src/systemctl/systemctl-sysv-compat.c new file mode 100644 index 0000000..a78fa1e --- /dev/null +++ b/src/systemctl/systemctl-sysv-compat.c @@ -0,0 +1,271 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <fcntl.h> +#include <sys/stat.h> +#include <sys/types.h> + +#include "env-util.h" +#include "fd-util.h" +#include "initreq.h" +#include "install.h" +#include "io-util.h" +#include "parse-util.h" +#include "path-util.h" +#include "process-util.h" +#include "strv.h" +#include "systemctl-sysv-compat.h" +#include "systemctl.h" + +int talk_initctl(char rl) { +#if HAVE_SYSV_COMPAT + struct init_request request; + _cleanup_close_ int fd = -1; + const char *p; + int r; + + /* Try to switch to the specified SysV runlevel. Returns == 0 if the operation does not apply on this + * system, and > 0 on success. */ + + if (rl == 0) + return 0; + + FOREACH_STRING(p, "/run/initctl", "/dev/initctl") { + fd = open(p, O_WRONLY|O_NONBLOCK|O_CLOEXEC|O_NOCTTY); + if (fd >= 0 || errno != ENOENT) + break; + } + if (fd < 0) { + if (errno == ENOENT) + return 0; + + return log_error_errno(errno, "Failed to open initctl fifo: %m"); + } + + request = (struct init_request) { + .magic = INIT_MAGIC, + .sleeptime = 0, + .cmd = INIT_CMD_RUNLVL, + .runlevel = rl, + }; + + r = loop_write(fd, &request, sizeof(request), false); + if (r < 0) + return log_error_errno(r, "Failed to write to %s: %m", p); + + return 1; +#else + return -EOPNOTSUPP; +#endif +} + +int parse_shutdown_time_spec(const char *t, usec_t *ret) { + assert(t); + assert(ret); + + if (streq(t, "now")) + *ret = 0; + else if (!strchr(t, ':')) { + uint64_t u; + + if (safe_atou64(t, &u) < 0) + return -EINVAL; + + *ret = now(CLOCK_REALTIME) + USEC_PER_MINUTE * u; + } else { + char *e = NULL; + long hour, minute; + struct tm tm = {}; + time_t s; + usec_t n; + + errno = 0; + hour = strtol(t, &e, 10); + if (errno > 0 || *e != ':' || hour < 0 || hour > 23) + return -EINVAL; + + minute = strtol(e+1, &e, 10); + if (errno > 0 || *e != 0 || minute < 0 || minute > 59) + return -EINVAL; + + n = now(CLOCK_REALTIME); + s = (time_t) (n / USEC_PER_SEC); + + assert_se(localtime_r(&s, &tm)); + + tm.tm_hour = (int) hour; + tm.tm_min = (int) minute; + tm.tm_sec = 0; + + s = mktime(&tm); + assert(s >= 0); + + *ret = (usec_t) s * USEC_PER_SEC; + + while (*ret <= n) + *ret += USEC_PER_DAY; + } + + return 0; +} + +int enable_sysv_units(const char *verb, char **args) { + int r = 0; + +#if HAVE_SYSV_COMPAT + _cleanup_(lookup_paths_free) LookupPaths paths = {}; + unsigned f = 0; + + /* Processes all SysV units, and reshuffles the array so that afterwards only the native units remain */ + + if (arg_scope != UNIT_FILE_SYSTEM) + return 0; + + if (getenv_bool("SYSTEMCTL_SKIP_SYSV") > 0) + return 0; + + if (!STR_IN_SET(verb, + "enable", + "disable", + "is-enabled")) + return 0; + + r = lookup_paths_init(&paths, arg_scope, LOOKUP_PATHS_EXCLUDE_GENERATED, arg_root); + if (r < 0) + return r; + + r = 0; + while (args[f]) { + + const char *argv[] = { + ROOTLIBEXECDIR "/systemd-sysv-install", + NULL, /* --root= */ + NULL, /* verb */ + NULL, /* service */ + NULL, + }; + + _cleanup_free_ char *p = NULL, *q = NULL, *l = NULL, *v = NULL; + bool found_native = false, found_sysv; + const char *name; + unsigned c = 1; + pid_t pid; + int j; + + name = args[f++]; + + if (!endswith(name, ".service")) + continue; + + if (path_is_absolute(name)) + continue; + + j = unit_file_exists(arg_scope, &paths, name); + if (j < 0 && !IN_SET(j, -ELOOP, -ERFKILL, -EADDRNOTAVAIL)) + return log_error_errno(j, "Failed to look up unit file state: %m"); + found_native = j != 0; + + /* If we have both a native unit and a SysV script, enable/disable them both (below); for + * is-enabled, prefer the native unit */ + if (found_native && streq(verb, "is-enabled")) + continue; + + p = path_join(arg_root, SYSTEM_SYSVINIT_PATH, name); + if (!p) + return log_oom(); + + p[strlen(p) - STRLEN(".service")] = 0; + found_sysv = access(p, F_OK) >= 0; + if (!found_sysv) + continue; + + if (!arg_quiet) { + if (found_native) + log_info("Synchronizing state of %s with SysV service script with %s.", name, argv[0]); + else + log_info("%s is not a native service, redirecting to systemd-sysv-install.", name); + } + + if (!isempty(arg_root)) { + q = strjoin("--root=", arg_root); + if (!q) + return log_oom(); + + argv[c++] = q; + } + + /* Let's copy the verb, since it's still pointing directly into the original argv[] array we + * got passed, but safe_fork() is likely going to rewrite that for the new child */ + v = strdup(verb); + if (!v) + return log_oom(); + + argv[c++] = v; + argv[c++] = basename(p); + argv[c] = NULL; + + l = strv_join((char**)argv, " "); + if (!l) + return log_oom(); + + if (!arg_quiet) + log_info("Executing: %s", l); + + j = safe_fork("(sysv-install)", FORK_RESET_SIGNALS|FORK_DEATHSIG|FORK_RLIMIT_NOFILE_SAFE|FORK_LOG, &pid); + if (j < 0) + return j; + if (j == 0) { + /* Child */ + execv(argv[0], (char**) argv); + log_error_errno(errno, "Failed to execute %s: %m", argv[0]); + _exit(EXIT_FAILURE); + } + + j = wait_for_terminate_and_check("sysv-install", pid, WAIT_LOG_ABNORMAL); + if (j < 0) + return j; + if (streq(verb, "is-enabled")) { + if (j == EXIT_SUCCESS) { + if (!arg_quiet) + puts("enabled"); + r = 1; + } else { + if (!arg_quiet) + puts("disabled"); + } + + } else if (j != EXIT_SUCCESS) + return -EBADE; /* We don't warn here, under the assumption the script already showed an explanation */ + + if (found_native) + continue; + + /* Remove this entry, so that we don't try enabling it as native unit */ + assert(f > 0); + f--; + assert(args[f] == name); + strv_remove(args + f, name); + } + +#endif + return r; +} + +int action_to_runlevel(void) { +#if HAVE_SYSV_COMPAT + static const char table[_ACTION_MAX] = { + [ACTION_HALT] = '0', + [ACTION_POWEROFF] = '0', + [ACTION_REBOOT] = '6', + [ACTION_RUNLEVEL2] = '2', + [ACTION_RUNLEVEL3] = '3', + [ACTION_RUNLEVEL4] = '4', + [ACTION_RUNLEVEL5] = '5', + [ACTION_RESCUE] = '1' + }; + + assert(arg_action >= 0 && arg_action < _ACTION_MAX); + return table[arg_action]; +#else + return -EOPNOTSUPP; +#endif +} diff --git a/src/systemctl/systemctl-sysv-compat.h b/src/systemctl/systemctl-sysv-compat.h new file mode 100644 index 0000000..86fd3ec --- /dev/null +++ b/src/systemctl/systemctl-sysv-compat.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#include "time-util.h" + +int talk_initctl(char runlevel); + +int parse_shutdown_time_spec(const char *t, usec_t *ret); + +/* The init script exit codes for the LSB 'status' verb. (This is different from the 'start' verb, whose exit + codes are defined in exit-status.h.) + + 0 program is running or service is OK + 1 program is dead and /var/run pid file exists + 2 program is dead and /var/lock lock file exists + 3 program is not running + 4 program or service status is unknown + 5-99 reserved for future LSB use + 100-149 reserved for distribution use + 150-199 reserved for application use + 200-254 reserved + + https://refspecs.linuxbase.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/iniscrptact.html +*/ +enum { + EXIT_PROGRAM_RUNNING_OR_SERVICE_OK = 0, + EXIT_PROGRAM_DEAD_AND_PID_EXISTS = 1, + EXIT_PROGRAM_DEAD_AND_LOCK_FILE_EXISTS = 2, + EXIT_PROGRAM_NOT_RUNNING = 3, + EXIT_PROGRAM_OR_SERVICES_STATUS_UNKNOWN = 4, +}; + +int enable_sysv_units(const char *verb, char **args); + +int action_to_runlevel(void) _pure_; diff --git a/src/systemctl/systemctl-trivial-method.c b/src/systemctl/systemctl-trivial-method.c new file mode 100644 index 0000000..c0b4d48 --- /dev/null +++ b/src/systemctl/systemctl-trivial-method.c @@ -0,0 +1,44 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "systemctl-trivial-method.h" +#include "systemctl-util.h" +#include "systemctl.h" + +/* A generic implementation for cases we just need to invoke a simple method call on the Manager object. */ + +int trivial_method(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + const char *method; + sd_bus *bus; + int r; + + if (arg_dry_run) + return 0; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_maybe(); + + method = + streq(argv[0], "clear-jobs") || + streq(argv[0], "cancel") ? "ClearJobs" : + streq(argv[0], "reset-failed") ? "ResetFailed" : + streq(argv[0], "halt") ? "Halt" : + streq(argv[0], "reboot") ? "Reboot" : + streq(argv[0], "kexec") ? "KExec" : + streq(argv[0], "exit") ? "Exit" : + /* poweroff */ "PowerOff"; + + r = bus_call_method(bus, bus_systemd_mgr, method, &error, NULL, NULL); + if (r < 0 && arg_action == ACTION_SYSTEMCTL) + return log_error_errno(r, "Failed to execute operation: %s", bus_error_message(&error, r)); + + /* Note that for the legacy commands (i.e. those with action != ACTION_SYSTEMCTL) we support + * fallbacks to the old ways of doing things, hence don't log any error in that case here. */ + + return r < 0 ? r : 0; +} diff --git a/src/systemctl/systemctl-trivial-method.h b/src/systemctl/systemctl-trivial-method.h new file mode 100644 index 0000000..6dcd152 --- /dev/null +++ b/src/systemctl/systemctl-trivial-method.h @@ -0,0 +1,4 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +int trivial_method(int argc, char *argv[], void *userdata); diff --git a/src/systemctl/systemctl-util.c b/src/systemctl/systemctl-util.c new file mode 100644 index 0000000..9713fce --- /dev/null +++ b/src/systemctl/systemctl-util.c @@ -0,0 +1,936 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <sys/reboot.h> +#include <unistd.h> + +#include "sd-bus.h" +#include "sd-daemon.h" + +#include "bus-common-errors.h" +#include "bus-locator.h" +#include "bus-map-properties.h" +#include "bus-unit-util.h" +#include "dropin.h" +#include "env-util.h" +#include "exit-status.h" +#include "fs-util.h" +#include "glob-util.h" +#include "macro.h" +#include "path-util.h" +#include "reboot-util.h" +#include "set.h" +#include "spawn-ask-password-agent.h" +#include "spawn-polkit-agent.h" +#include "stat-util.h" +#include "systemctl-util.h" +#include "systemctl.h" +#include "terminal-util.h" +#include "verbs.h" + +static sd_bus *buses[_BUS_FOCUS_MAX] = {}; + +int acquire_bus(BusFocus focus, sd_bus **ret) { + int r; + + assert(focus < _BUS_FOCUS_MAX); + assert(ret); + + /* We only go directly to the manager, if we are using a local transport */ + if (arg_transport != BUS_TRANSPORT_LOCAL) + focus = BUS_FULL; + + if (getenv_bool("SYSTEMCTL_FORCE_BUS") > 0) + focus = BUS_FULL; + + if (!buses[focus]) { + bool user; + + user = arg_scope != UNIT_FILE_SYSTEM; + + if (focus == BUS_MANAGER) + r = bus_connect_transport_systemd(arg_transport, arg_host, user, &buses[focus]); + else + r = bus_connect_transport(arg_transport, arg_host, user, &buses[focus]); + if (r < 0) + return bus_log_connect_error(r); + + (void) sd_bus_set_allow_interactive_authorization(buses[focus], arg_ask_password); + } + + *ret = buses[focus]; + return 0; +} + +void release_busses(void) { + BusFocus w; + + for (w = 0; w < _BUS_FOCUS_MAX; w++) + buses[w] = sd_bus_flush_close_unref(buses[w]); +} + +void ask_password_agent_open_maybe(void) { + /* Open the password agent as a child process if necessary */ + + if (arg_dry_run) + return; + + if (arg_scope != UNIT_FILE_SYSTEM) + return; + + ask_password_agent_open_if_enabled(arg_transport, arg_ask_password); +} + +void polkit_agent_open_maybe(void) { + /* Open the polkit agent as a child process if necessary */ + + if (arg_scope != UNIT_FILE_SYSTEM) + return; + + polkit_agent_open_if_enabled(arg_transport, arg_ask_password); +} + +int translate_bus_error_to_exit_status(int r, const sd_bus_error *error) { + assert(error); + + if (!sd_bus_error_is_set(error)) + return r; + + if (sd_bus_error_has_names(error, SD_BUS_ERROR_ACCESS_DENIED, + BUS_ERROR_ONLY_BY_DEPENDENCY, + BUS_ERROR_NO_ISOLATION, + BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE)) + return EXIT_NOPERMISSION; + + if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT)) + return EXIT_NOTINSTALLED; + + if (sd_bus_error_has_names(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE, + SD_BUS_ERROR_NOT_SUPPORTED)) + return EXIT_NOTIMPLEMENTED; + + if (sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) + return EXIT_NOTCONFIGURED; + + if (r != 0) + return r; + + return EXIT_FAILURE; +} + +int get_state_one_unit(sd_bus *bus, const char *unit, UnitActiveState *ret_active_state) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_free_ char *buf = NULL, *dbus_path = NULL; + UnitActiveState state; + int r; + + assert(unit); + assert(ret_active_state); + + dbus_path = unit_dbus_path_from_name(unit); + if (!dbus_path) + return log_oom(); + + r = sd_bus_get_property_string( + bus, + "org.freedesktop.systemd1", + dbus_path, + "org.freedesktop.systemd1.Unit", + "ActiveState", + &error, + &buf); + if (r < 0) + return log_error_errno(r, "Failed to retrieve unit state: %s", bus_error_message(&error, r)); + + state = unit_active_state_from_string(buf); + if (state < 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid unit state '%s' for: %s", buf, unit); + + *ret_active_state = state; + return 0; +} + +int get_unit_list( + sd_bus *bus, + const char *machine, + char **patterns, + UnitInfo **unit_infos, + int c, + sd_bus_message **ret_reply) { + + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + size_t size = c; + int r; + bool fallback = false; + + assert(bus); + assert(unit_infos); + assert(ret_reply); + + r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "ListUnitsByPatterns"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, arg_states); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, patterns); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_call(bus, m, 0, &error, &reply); + if (r < 0 && (sd_bus_error_has_names(&error, SD_BUS_ERROR_UNKNOWN_METHOD, + SD_BUS_ERROR_ACCESS_DENIED))) { + /* Fallback to legacy ListUnitsFiltered method */ + fallback = true; + log_debug_errno(r, "Failed to list units: %s Falling back to ListUnitsFiltered method.", bus_error_message(&error, r)); + m = sd_bus_message_unref(m); + sd_bus_error_free(&error); + + r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "ListUnitsFiltered"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, arg_states); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_call(bus, m, 0, &error, &reply); + } + if (r < 0) + return log_error_errno(r, "Failed to list units: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)"); + if (r < 0) + return bus_log_parse_error(r); + + for (;;) { + UnitInfo u; + + r = bus_parse_unit_info(reply, &u); + if (r < 0) + return bus_log_parse_error(r); + if (r == 0) + break; + + u.machine = machine; + + if (!output_show_unit(&u, fallback ? patterns : NULL)) + continue; + + if (!GREEDY_REALLOC(*unit_infos, size, c+1)) + return log_oom(); + + (*unit_infos)[c++] = u; + } + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + *ret_reply = TAKE_PTR(reply); + return c; +} + +int expand_unit_names(sd_bus *bus, char **names, const char* suffix, char ***ret, bool *ret_expanded) { + _cleanup_strv_free_ char **mangled = NULL, **globs = NULL; + char **name; + int r, i; + + assert(bus); + assert(ret); + + STRV_FOREACH(name, names) { + UnitNameMangle options = UNIT_NAME_MANGLE_GLOB | (arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN); + char *t; + + r = unit_name_mangle_with_suffix(*name, NULL, options, suffix ?: ".service", &t); + if (r < 0) + return log_error_errno(r, "Failed to mangle name: %m"); + + if (string_is_glob(t)) + r = strv_consume(&globs, t); + else + r = strv_consume(&mangled, t); + if (r < 0) + return log_oom(); + } + + /* Query the manager only if any of the names are a glob, since this is fairly expensive */ + bool expanded = !strv_isempty(globs); + if (expanded) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_free_ UnitInfo *unit_infos = NULL; + size_t allocated, n; + + r = get_unit_list(bus, NULL, globs, &unit_infos, 0, &reply); + if (r < 0) + return r; + + n = strv_length(mangled); + allocated = n + 1; + + for (i = 0; i < r; i++) { + if (!GREEDY_REALLOC(mangled, allocated, n+2)) + return log_oom(); + + mangled[n] = strdup(unit_infos[i].id); + if (!mangled[n]) + return log_oom(); + + mangled[++n] = NULL; + } + } + + if (ret_expanded) + *ret_expanded = expanded; + + *ret = TAKE_PTR(mangled); + return 0; +} + +int check_triggering_units(sd_bus *bus, const char *unit) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_free_ char *n = NULL, *dbus_path = NULL, *load_state = NULL; + _cleanup_strv_free_ char **triggered_by = NULL; + bool print_warning_label = true; + UnitActiveState active_state; + char **i; + int r; + + r = unit_name_mangle(unit, 0, &n); + if (r < 0) + return log_error_errno(r, "Failed to mangle unit name: %m"); + + r = unit_load_state(bus, n, &load_state); + if (r < 0) + return r; + + if (streq(load_state, "masked")) + return 0; + + dbus_path = unit_dbus_path_from_name(n); + if (!dbus_path) + return log_oom(); + + r = sd_bus_get_property_strv( + bus, + "org.freedesktop.systemd1", + dbus_path, + "org.freedesktop.systemd1.Unit", + "TriggeredBy", + &error, + &triggered_by); + if (r < 0) + return log_error_errno(r, "Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r)); + + STRV_FOREACH(i, triggered_by) { + r = get_state_one_unit(bus, *i, &active_state); + if (r < 0) + return r; + + if (!IN_SET(active_state, UNIT_ACTIVE, UNIT_RELOADING)) + continue; + + if (print_warning_label) { + log_warning("Warning: Stopping %s, but it can still be activated by:", n); + print_warning_label = false; + } + + log_warning(" %s", *i); + } + + return 0; +} + +int need_daemon_reload(sd_bus *bus, const char *unit) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + const char *path; + int b, r; + + /* We ignore all errors here, since this is used to show a + * warning only */ + + /* We don't use unit_dbus_path_from_name() directly since we + * don't want to load the unit if it isn't loaded. */ + + r = bus_call_method(bus, bus_systemd_mgr, "GetUnit", NULL, &reply, "s", unit); + if (r < 0) + return r; + + r = sd_bus_message_read(reply, "o", &path); + if (r < 0) + return r; + + r = sd_bus_get_property_trivial( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.systemd1.Unit", + "NeedDaemonReload", + NULL, + 'b', &b); + if (r < 0) + return r; + + return b; +} + +void warn_unit_file_changed(const char *unit) { + assert(unit); + + log_warning("%sWarning:%s The unit file, source configuration file or drop-ins of %s changed on disk. Run 'systemctl%s daemon-reload' to reload units.", + ansi_highlight_red(), + ansi_normal(), + unit, + arg_scope == UNIT_FILE_SYSTEM ? "" : " --user"); +} + +int unit_file_find_path(LookupPaths *lp, const char *unit_name, char **ret_unit_path) { + char **p; + + assert(lp); + assert(unit_name); + + STRV_FOREACH(p, lp->search_path) { + _cleanup_free_ char *path = NULL, *lpath = NULL; + int r; + + path = path_join(*p, unit_name); + if (!path) + return log_oom(); + + r = chase_symlinks(path, arg_root, 0, &lpath, NULL); + if (r == -ENOENT) + continue; + if (r == -ENOMEM) + return log_oom(); + if (r < 0) + return log_error_errno(r, "Failed to access path \"%s\": %m", path); + + if (ret_unit_path) + *ret_unit_path = TAKE_PTR(lpath); + + return 1; + } + + if (ret_unit_path) + *ret_unit_path = NULL; + + return 0; +} + +int unit_find_paths( + sd_bus *bus, + const char *unit_name, + LookupPaths *lp, + bool force_client_side, + Hashmap **cached_name_map, + Hashmap **cached_id_map, + char **ret_fragment_path, + char ***ret_dropin_paths) { + + _cleanup_strv_free_ char **dropins = NULL; + _cleanup_free_ char *path = NULL; + int r; + + /** + * Finds where the unit is defined on disk. Returns 0 if the unit is not found. Returns 1 if it is + * found, and sets: + * - the path to the unit in *ret_frament_path, if it exists on disk, + * - and a strv of existing drop-ins in *ret_dropin_paths, if the arg is not NULL and any dropins + * were found. + * + * Returns -ERFKILL if the unit is masked, and -EKEYREJECTED if the unit file could not be loaded for + * some reason (the latter only applies if we are going through the service manager). + */ + + assert(unit_name); + assert(ret_fragment_path); + assert(lp); + + /* Go via the bus to acquire the path, unless we are explicitly told not to, or when the unit name is a template */ + if (!force_client_side && + !install_client_side() && + !unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_free_ char *load_state = NULL, *dbus_path = NULL; + + dbus_path = unit_dbus_path_from_name(unit_name); + if (!dbus_path) + return log_oom(); + + r = sd_bus_get_property_string( + bus, + "org.freedesktop.systemd1", + dbus_path, + "org.freedesktop.systemd1.Unit", + "LoadState", + &error, + &load_state); + if (r < 0) + return log_error_errno(r, "Failed to get LoadState: %s", bus_error_message(&error, r)); + + if (streq(load_state, "masked")) + return -ERFKILL; + if (streq(load_state, "not-found")) { + r = 0; + goto not_found; + } + if (!STR_IN_SET(load_state, "loaded", "bad-setting")) + return -EKEYREJECTED; + + r = sd_bus_get_property_string( + bus, + "org.freedesktop.systemd1", + dbus_path, + "org.freedesktop.systemd1.Unit", + "FragmentPath", + &error, + &path); + if (r < 0) + return log_error_errno(r, "Failed to get FragmentPath: %s", bus_error_message(&error, r)); + + if (ret_dropin_paths) { + r = sd_bus_get_property_strv( + bus, + "org.freedesktop.systemd1", + dbus_path, + "org.freedesktop.systemd1.Unit", + "DropInPaths", + &error, + &dropins); + if (r < 0) + return log_error_errno(r, "Failed to get DropInPaths: %s", bus_error_message(&error, r)); + } + } else { + const char *_path; + _cleanup_set_free_free_ Set *names = NULL; + + if (!*cached_name_map) { + r = unit_file_build_name_map(lp, NULL, cached_id_map, cached_name_map, NULL); + if (r < 0) + return r; + } + + r = unit_file_find_fragment(*cached_id_map, *cached_name_map, unit_name, &_path, &names); + if (r < 0) + return r; + + if (_path) { + path = strdup(_path); + if (!path) + return log_oom(); + } + + if (ret_dropin_paths) { + r = unit_file_find_dropin_paths(arg_root, lp->search_path, NULL, + ".d", ".conf", + NULL, names, &dropins); + if (r < 0) + return r; + } + } + + if (isempty(path)) { + *ret_fragment_path = NULL; + r = 0; + } else { + *ret_fragment_path = TAKE_PTR(path); + r = 1; + } + + if (ret_dropin_paths) { + if (!strv_isempty(dropins)) { + *ret_dropin_paths = TAKE_PTR(dropins); + r = 1; + } else + *ret_dropin_paths = NULL; + } + + not_found: + if (r == 0 && !arg_force) + log_error("No files found for %s.", unit_name); + + return r; +} + +static int unit_find_template_path( + const char *unit_name, + LookupPaths *lp, + char **ret_fragment_path, + char **ret_template) { + + _cleanup_free_ char *t = NULL, *f = NULL; + int r; + + /* Returns 1 if a fragment was found, 0 if not found, negative on error. */ + + r = unit_file_find_path(lp, unit_name, &f); + if (r < 0) + return r; + if (r > 0) { + if (ret_fragment_path) + *ret_fragment_path = TAKE_PTR(f); + if (ret_template) + *ret_template = NULL; + return r; /* found a real unit */ + } + + r = unit_name_template(unit_name, &t); + if (r == -EINVAL) { + if (ret_fragment_path) + *ret_fragment_path = NULL; + if (ret_template) + *ret_template = NULL; + + return 0; /* not a template, does not exist */ + } + if (r < 0) + return log_error_errno(r, "Failed to determine template name: %m"); + + r = unit_file_find_path(lp, t, ret_fragment_path); + if (r < 0) + return r; + + if (ret_template) + *ret_template = r > 0 ? TAKE_PTR(t) : NULL; + + return r; +} + +int unit_is_masked(sd_bus *bus, LookupPaths *lp, const char *name) { + _cleanup_free_ char *load_state = NULL; + int r; + + if (unit_name_is_valid(name, UNIT_NAME_TEMPLATE)) { + _cleanup_free_ char *path = NULL; + + /* A template cannot be loaded, but it can be still masked, so + * we need to use a different method. */ + + r = unit_file_find_path(lp, name, &path); + if (r < 0) + return r; + if (r == 0) + return false; + return null_or_empty_path(path); + } + + r = unit_load_state(bus, name, &load_state); + if (r < 0) + return r; + + return streq(load_state, "masked"); +} + +int unit_exists(LookupPaths *lp, const char *unit) { + typedef struct UnitStateInfo { + const char *load_state; + const char *active_state; + } UnitStateInfo; + + static const struct bus_properties_map property_map[] = { + { "LoadState", "s", NULL, offsetof(UnitStateInfo, load_state) }, + { "ActiveState", "s", NULL, offsetof(UnitStateInfo, active_state) }, + {}, + }; + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + _cleanup_free_ char *path = NULL; + UnitStateInfo info = {}; + sd_bus *bus; + int r; + + if (unit_name_is_valid(unit, UNIT_NAME_TEMPLATE)) + return unit_find_template_path(unit, lp, NULL, NULL); + + path = unit_dbus_path_from_name(unit); + if (!path) + return log_oom(); + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = bus_map_all_properties(bus, "org.freedesktop.systemd1", path, property_map, 0, &error, &m, &info); + if (r < 0) + return log_error_errno(r, "Failed to get properties: %s", bus_error_message(&error, r)); + + return !streq_ptr(info.load_state, "not-found") || !streq_ptr(info.active_state, "inactive"); +} + + +int append_unit_dependencies(sd_bus *bus, char **names, char ***ret) { + _cleanup_strv_free_ char **with_deps = NULL; + char **name; + + assert(bus); + assert(ret); + + STRV_FOREACH(name, names) { + _cleanup_strv_free_ char **deps = NULL; + + if (strv_extend(&with_deps, *name) < 0) + return log_oom(); + + (void) unit_get_dependencies(bus, *name, &deps); + + if (strv_extend_strv(&with_deps, deps, true) < 0) + return log_oom(); + } + + *ret = TAKE_PTR(with_deps); + + return 0; +} + +int maybe_extend_with_unit_dependencies(sd_bus *bus, char ***list) { + _cleanup_strv_free_ char **list_with_deps = NULL; + int r; + + assert(bus); + assert(list); + + if (!arg_with_dependencies) + return 0; + + r = append_unit_dependencies(bus, *list, &list_with_deps); + if (r < 0) + return log_error_errno(r, "Failed to append unit dependencies: %m"); + + strv_free(*list); + *list = TAKE_PTR(list_with_deps); + return 0; +} + +int unit_get_dependencies(sd_bus *bus, const char *name, char ***ret) { + _cleanup_strv_free_ char **deps = NULL; + + static const struct bus_properties_map map[_DEPENDENCY_MAX][6] = { + [DEPENDENCY_FORWARD] = { + { "Requires", "as", NULL, 0 }, + { "Requisite", "as", NULL, 0 }, + { "Wants", "as", NULL, 0 }, + { "ConsistsOf", "as", NULL, 0 }, + { "BindsTo", "as", NULL, 0 }, + {} + }, + [DEPENDENCY_REVERSE] = { + { "RequiredBy", "as", NULL, 0 }, + { "RequisiteOf", "as", NULL, 0 }, + { "WantedBy", "as", NULL, 0 }, + { "PartOf", "as", NULL, 0 }, + { "BoundBy", "as", NULL, 0 }, + {} + }, + [DEPENDENCY_AFTER] = { + { "After", "as", NULL, 0 }, + {} + }, + [DEPENDENCY_BEFORE] = { + { "Before", "as", NULL, 0 }, + {} + }, + }; + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_free_ char *dbus_path = NULL; + int r; + + assert(bus); + assert(name); + assert(ret); + + dbus_path = unit_dbus_path_from_name(name); + if (!dbus_path) + return log_oom(); + + r = bus_map_all_properties(bus, + "org.freedesktop.systemd1", + dbus_path, + map[arg_dependency], + BUS_MAP_STRDUP, + &error, + NULL, + &deps); + if (r < 0) + return log_error_errno(r, "Failed to get properties of %s: %s", name, bus_error_message(&error, r)); + + strv_uniq(deps); /* Sometimes a unit might have multiple deps on the other unit, + * but we still want to show it just once. */ + *ret = TAKE_PTR(deps); + + return 0; +} + +const char* unit_type_suffix(const char *unit) { + const char *dot; + + dot = strrchr(unit, '.'); + if (!dot) + return ""; + + return dot + 1; +} + +bool output_show_unit(const UnitInfo *u, char **patterns) { + assert(u); + + if (!strv_fnmatch_or_empty(patterns, u->id, FNM_NOESCAPE)) + return false; + + if (arg_types && !strv_find(arg_types, unit_type_suffix(u->id))) + return false; + + if (arg_all) + return true; + + /* Note that '--all' is not purely a state filter, but also a filter that hides units that "follow" + * other units (which is used for device units that appear under different names). */ + if (!isempty(u->following)) + return false; + + if (!strv_isempty(arg_states)) + return true; + + /* By default show all units except the ones in inactive state and with no pending job */ + if (u->job_id > 0) + return true; + + if (streq(u->active_state, "inactive")) + return false; + + return true; +} + +bool install_client_side(void) { + /* Decides when to execute enable/disable/... operations client-side rather than server-side. */ + + if (running_in_chroot_or_offline()) + return true; + + if (sd_booted() <= 0) + return true; + + if (!isempty(arg_root)) + return true; + + if (arg_scope == UNIT_FILE_GLOBAL) + return true; + + /* Unsupported environment variable, mostly for debugging purposes */ + if (getenv_bool("SYSTEMCTL_INSTALL_CLIENT_SIDE") > 0) + return true; + + return false; +} + +int output_table(Table *table) { + int r; + + assert(table); + + if (OUTPUT_MODE_IS_JSON(arg_output)) + r = table_print_json(table, NULL, output_mode_to_json_format_flags(arg_output) | JSON_FORMAT_COLOR_AUTO); + else + r = table_print(table, NULL); + if (r < 0) + return table_log_print_error(r); + + return 0; +} + +bool show_preset_for_state(UnitFileState state) { + /* Don't show preset state in those unit file states, it'll only confuse users. */ + return !IN_SET(state, + UNIT_FILE_ALIAS, + UNIT_FILE_STATIC, + UNIT_FILE_GENERATED, + UNIT_FILE_TRANSIENT); +} + +UnitFileFlags unit_file_flags_from_args(void) { + return (arg_runtime ? UNIT_FILE_RUNTIME : 0) | + (arg_force ? UNIT_FILE_FORCE : 0); +} + +int mangle_names(const char *operation, char **original_names, char ***ret_mangled_names) { + _cleanup_strv_free_ char **l = NULL; + char **i, **name; + int r; + + assert(ret_mangled_names); + + l = i = new(char*, strv_length(original_names) + 1); + if (!l) + return log_oom(); + + STRV_FOREACH(name, original_names) { + + /* When enabling units qualified path names are OK, too, hence allow them explicitly. */ + + if (is_path(*name)) { + *i = strdup(*name); + if (!*i) + return log_oom(); + } else { + r = unit_name_mangle_with_suffix(*name, operation, + arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN, + ".service", i); + if (r < 0) { + *i = NULL; + return log_error_errno(r, "Failed to mangle unit name: %m"); + } + } + + i++; + } + + *i = NULL; + *ret_mangled_names = TAKE_PTR(l); + + return 0; +} + +int halt_now(enum action a) { + /* The kernel will automatically flush ATA disks and suchlike on reboot(), but the file systems need + * to be synced explicitly in advance. */ + if (!arg_no_sync && !arg_dry_run) + (void) sync(); + + /* Make sure C-A-D is handled by the kernel from this point on... */ + if (!arg_dry_run) + (void) reboot(RB_ENABLE_CAD); + + switch (a) { + + case ACTION_HALT: + if (!arg_quiet) + log_info("Halting."); + if (arg_dry_run) + return 0; + (void) reboot(RB_HALT_SYSTEM); + return -errno; + + case ACTION_POWEROFF: + if (!arg_quiet) + log_info("Powering off."); + if (arg_dry_run) + return 0; + (void) reboot(RB_POWER_OFF); + return -errno; + + case ACTION_KEXEC: + case ACTION_REBOOT: + return reboot_with_parameter(REBOOT_FALLBACK | + (arg_quiet ? 0 : REBOOT_LOG) | + (arg_dry_run ? REBOOT_DRY_RUN : 0)); + + default: + assert_not_reached("Unknown action."); + } +} diff --git a/src/systemctl/systemctl-util.h b/src/systemctl/systemctl-util.h new file mode 100644 index 0000000..6445bb4 --- /dev/null +++ b/src/systemctl/systemctl-util.h @@ -0,0 +1,58 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#include "sd-bus.h" + +#include "bus-unit-util.h" +#include "format-table.h" +#include "systemctl.h" + +typedef enum BusFocus { + BUS_FULL, /* The full bus indicated via --system or --user */ + BUS_MANAGER, /* The manager itself, possibly directly, possibly via the bus */ + _BUS_FOCUS_MAX +} BusFocus; + +int acquire_bus(BusFocus focus, sd_bus **ret); +void release_busses(void); + +void ask_password_agent_open_maybe(void); +void polkit_agent_open_maybe(void); + +int translate_bus_error_to_exit_status(int r, const sd_bus_error *error); + +int get_state_one_unit(sd_bus *bus, const char *name, UnitActiveState *ret_active_state); +int get_unit_list(sd_bus *bus, const char *machine, char **patterns, UnitInfo **unit_infos, int c, sd_bus_message **ret_reply); +int expand_unit_names(sd_bus *bus, char **names, const char* suffix, char ***ret, bool *ret_expanded); + +int check_triggering_units(sd_bus *bus, const char *unit); + +int need_daemon_reload(sd_bus *bus, const char *unit); + +void warn_unit_file_changed(const char *unit); + +int append_unit_dependencies(sd_bus *bus, char **names, char ***ret); +int maybe_extend_with_unit_dependencies(sd_bus *bus, char ***list); + +int unit_file_find_path(LookupPaths *lp, const char *unit_name, char **ret_unit_path); +int unit_find_paths(sd_bus *bus, const char *unit_name, LookupPaths *lp, bool force_client_side, Hashmap **cached_id_map, Hashmap **cached_name_map, char **ret_fragment_path, char ***ret_dropin_paths); + +int unit_is_masked(sd_bus *bus, LookupPaths *lp, const char *name); +int unit_exists(LookupPaths *lp, const char *unit); + +int unit_get_dependencies(sd_bus *bus, const char *name, char ***ret); + +const char* unit_type_suffix(const char *unit); +bool output_show_unit(const UnitInfo *u, char **patterns); + +bool install_client_side(void); + +int output_table(Table *table); + +bool show_preset_for_state(UnitFileState state); + +int mangle_names(const char *operation, char **original_names, char ***ret_mangled_names); + +UnitFileFlags unit_file_flags_from_args(void); + +int halt_now(enum action a); diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c new file mode 100644 index 0000000..d002d93 --- /dev/null +++ b/src/systemctl/systemctl.c @@ -0,0 +1,1128 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <getopt.h> +#include <locale.h> +#include <unistd.h> + +#include "sd-daemon.h" + +#include "bus-util.h" +#include "install.h" +#include "main-func.h" +#include "output-mode.h" +#include "pager.h" +#include "path-util.h" +#include "pretty-print.h" +#include "rlimit-util.h" +#include "sigbus.h" +#include "signal-util.h" +#include "string-table.h" +#include "systemctl-add-dependency.h" +#include "systemctl-cancel-job.h" +#include "systemctl-clean-or-freeze.h" +#include "systemctl-compat-halt.h" +#include "systemctl-compat-runlevel.h" +#include "systemctl-compat-shutdown.h" +#include "systemctl-compat-telinit.h" +#include "systemctl-daemon-reload.h" +#include "systemctl-edit.h" +#include "systemctl-enable.h" +#include "systemctl-is-active.h" +#include "systemctl-is-enabled.h" +#include "systemctl-is-system-running.h" +#include "systemctl-kill.h" +#include "systemctl-list-dependencies.h" +#include "systemctl-list-jobs.h" +#include "systemctl-list-machines.h" +#include "systemctl-list-unit-files.h" +#include "systemctl-list-units.h" +#include "systemctl-log-setting.h" +#include "systemctl-logind.h" +#include "systemctl-preset-all.h" +#include "systemctl-reset-failed.h" +#include "systemctl-service-watchdogs.h" +#include "systemctl-set-default.h" +#include "systemctl-set-environment.h" +#include "systemctl-set-property.h" +#include "systemctl-show.h" +#include "systemctl-start-special.h" +#include "systemctl-start-unit.h" +#include "systemctl-switch-root.h" +#include "systemctl-sysv-compat.h" +#include "systemctl-trivial-method.h" +#include "systemctl-util.h" +#include "systemctl.h" +#include "terminal-util.h" +#include "time-util.h" +#include "verbs.h" +#include "virt.h" + +char **arg_types = NULL; +char **arg_states = NULL; +char **arg_properties = NULL; +bool arg_all = false; +enum dependency arg_dependency = DEPENDENCY_FORWARD; +const char *arg_job_mode = "replace"; +UnitFileScope arg_scope = UNIT_FILE_SYSTEM; +bool arg_wait = false; +bool arg_no_block = false; +bool arg_no_legend = false; +PagerFlags arg_pager_flags = 0; +bool arg_no_wtmp = false; +bool arg_no_sync = false; +bool arg_no_wall = false; +bool arg_no_reload = false; +bool arg_value = false; +bool arg_show_types = false; +bool arg_ignore_inhibitors = false; +bool arg_dry_run = false; +bool arg_quiet = false; +bool arg_full = false; +bool arg_recursive = false; +bool arg_with_dependencies = false; +bool arg_show_transaction = false; +int arg_force = 0; +bool arg_ask_password = false; +bool arg_runtime = false; +UnitFilePresetMode arg_preset_mode = UNIT_FILE_PRESET_FULL; +char **arg_wall = NULL; +const char *arg_kill_who = NULL; +int arg_signal = SIGTERM; +char *arg_root = NULL; +usec_t arg_when = 0; +const char *arg_reboot_argument = NULL; +enum action arg_action = ACTION_SYSTEMCTL; +BusTransport arg_transport = BUS_TRANSPORT_LOCAL; +const char *arg_host = NULL; +unsigned arg_lines = 10; +OutputMode arg_output = OUTPUT_SHORT; +bool arg_plain = false; +bool arg_firmware_setup = false; +usec_t arg_boot_loader_menu = USEC_INFINITY; +const char *arg_boot_loader_entry = NULL; +bool arg_now = false; +bool arg_jobs_before = false; +bool arg_jobs_after = false; +char **arg_clean_what = NULL; +TimestampStyle arg_timestamp_style = TIMESTAMP_PRETTY; + +STATIC_DESTRUCTOR_REGISTER(arg_wall, strv_freep); +STATIC_DESTRUCTOR_REGISTER(arg_root, freep); +STATIC_DESTRUCTOR_REGISTER(arg_types, strv_freep); +STATIC_DESTRUCTOR_REGISTER(arg_states, strv_freep); +STATIC_DESTRUCTOR_REGISTER(arg_properties, strv_freep); +STATIC_DESTRUCTOR_REGISTER(arg_clean_what, strv_freep); + +static int systemctl_help(void) { + _cleanup_free_ char *link = NULL; + int r; + + (void) pager_open(arg_pager_flags); + + r = terminal_urlify_man("systemctl", "1", &link); + if (r < 0) + return log_oom(); + + printf("%1$s [OPTIONS...] COMMAND ...\n\n" + "%5$sQuery or send control commands to the system manager.%6$s\n" + "\n%3$sUnit Commands:%4$s\n" + " list-units [PATTERN...] List units currently in memory\n" + " list-sockets [PATTERN...] List socket units currently in memory,\n" + " ordered by address\n" + " list-timers [PATTERN...] List timer units currently in memory,\n" + " ordered by next elapse\n" + " is-active PATTERN... Check whether units are active\n" + " is-failed PATTERN... Check whether units are failed\n" + " status [PATTERN...|PID...] Show runtime status of one or more units\n" + " show [PATTERN...|JOB...] Show properties of one or more\n" + " units/jobs or the manager\n" + " cat PATTERN... Show files and drop-ins of specified units\n" + " help PATTERN...|PID... Show manual for one or more units\n" + " list-dependencies [UNIT...] Recursively show units which are required\n" + " or wanted by the units or by which those\n" + " units are required or wanted\n" + " start UNIT... Start (activate) one or more units\n" + " stop UNIT... Stop (deactivate) one or more units\n" + " reload UNIT... Reload one or more units\n" + " restart UNIT... Start or restart one or more units\n" + " try-restart UNIT... Restart one or more units if active\n" + " reload-or-restart UNIT... Reload one or more units if possible,\n" + " otherwise start or restart\n" + " try-reload-or-restart UNIT... If active, reload one or more units,\n" + " if supported, otherwise restart\n" + " isolate UNIT Start one unit and stop all others\n" + " kill UNIT... Send signal to processes of a unit\n" + " clean UNIT... Clean runtime, cache, state, logs or\n" + " configuration of unit\n" + " freeze PATTERN... Freeze execution of unit processes\n" + " thaw PATTERN... Resume execution of a frozen unit\n" + " set-property UNIT PROPERTY=VALUE... Sets one or more properties of a unit\n" + " service-log-level SERVICE [LEVEL] Get/set logging threshold for service\n" + " service-log-target SERVICE [TARGET] Get/set logging target for service\n" + " reset-failed [PATTERN...] Reset failed state for all, one, or more\n" + " units" + "\n%3$sUnit File Commands:%4$s\n" + " list-unit-files [PATTERN...] List installed unit files\n" + " enable [UNIT...|PATH...] Enable one or more unit files\n" + " disable UNIT... Disable one or more unit files\n" + " reenable UNIT... Reenable one or more unit files\n" + " preset UNIT... Enable/disable one or more unit files\n" + " based on preset configuration\n" + " preset-all Enable/disable all unit files based on\n" + " preset configuration\n" + " is-enabled UNIT... Check whether unit files are enabled\n" + " mask UNIT... Mask one or more units\n" + " unmask UNIT... Unmask one or more units\n" + " link PATH... Link one or more units files into\n" + " the search path\n" + " revert UNIT... Revert one or more unit files to vendor\n" + " version\n" + " add-wants TARGET UNIT... Add 'Wants' dependency for the target\n" + " on specified one or more units\n" + " add-requires TARGET UNIT... Add 'Requires' dependency for the target\n" + " on specified one or more units\n" + " edit UNIT... Edit one or more unit files\n" + " get-default Get the name of the default target\n" + " set-default TARGET Set the default target\n" + "\n%3$sMachine Commands:%4$s\n" + " list-machines [PATTERN...] List local containers and host\n" + "\n%3$sJob Commands:%4$s\n" + " list-jobs [PATTERN...] List jobs\n" + " cancel [JOB...] Cancel all, one, or more jobs\n" + "\n%3$sEnvironment Commands:%4$s\n" + " show-environment Dump environment\n" + " set-environment VARIABLE=VALUE... Set one or more environment variables\n" + " unset-environment VARIABLE... Unset one or more environment variables\n" + " import-environment [VARIABLE...] Import all or some environment variables\n" + "\n%3$sManager State Commands:%4$s\n" + " daemon-reload Reload systemd manager configuration\n" + " daemon-reexec Reexecute systemd manager\n" + " log-level [LEVEL] Get/set logging threshold for manager\n" + " log-target [TARGET] Get/set logging target for manager\n" + " service-watchdogs [BOOL] Get/set service watchdog state\n" + "\n%3$sSystem Commands:%4$s\n" + " is-system-running Check whether system is fully running\n" + " default Enter system default mode\n" + " rescue Enter system rescue mode\n" + " emergency Enter system emergency mode\n" + " halt Shut down and halt the system\n" + " poweroff Shut down and power-off the system\n" + " reboot Shut down and reboot the system\n" + " kexec Shut down and reboot the system with kexec\n" + " exit [EXIT_CODE] Request user instance or container exit\n" + " switch-root ROOT [INIT] Change to a different root file system\n" + " suspend Suspend the system\n" + " hibernate Hibernate the system\n" + " hybrid-sleep Hibernate and suspend the system\n" + " suspend-then-hibernate Suspend the system, wake after a period of\n" + " time, and hibernate" + "\n%3$sOptions:%4$s\n" + " -h --help Show this help\n" + " --version Show package version\n" + " --system Connect to system manager\n" + " --user Connect to user service manager\n" + " -H --host=[USER@]HOST Operate on remote host\n" + " -M --machine=CONTAINER Operate on a local container\n" + " -t --type=TYPE List units of a particular type\n" + " --state=STATE List units with particular LOAD or SUB or ACTIVE state\n" + " --failed Shortcut for --state=failed\n" + " -p --property=NAME Show only properties by this name\n" + " -P NAME Equivalent to --value --property=NAME\n" + " -a --all Show all properties/all units currently in memory,\n" + " including dead/empty ones. To list all units installed\n" + " on the system, use 'list-unit-files' instead.\n" + " -l --full Don't ellipsize unit names on output\n" + " -r --recursive Show unit list of host and local containers\n" + " --reverse Show reverse dependencies with 'list-dependencies'\n" + " --with-dependencies Show unit dependencies with 'status', 'cat',\n" + " 'list-units', and 'list-unit-files'.\n" + " --job-mode=MODE Specify how to deal with already queued jobs, when\n" + " queueing a new job\n" + " -T --show-transaction When enqueuing a unit job, show full transaction\n" + " --show-types When showing sockets, explicitly show their type\n" + " --value When showing properties, only print the value\n" + " -i --ignore-inhibitors When shutting down or sleeping, ignore inhibitors\n" + " --kill-who=WHO Whom to send signal to\n" + " -s --signal=SIGNAL Which signal to send\n" + " --what=RESOURCES Which types of resources to remove\n" + " --now Start or stop unit after enabling or disabling it\n" + " --dry-run Only print what would be done\n" + " Currently supported by verbs: halt, poweroff, reboot,\n" + " kexec, suspend, hibernate, suspend-then-hibernate,\n" + " hybrid-sleep, default, rescue, emergency, and exit.\n" + " -q --quiet Suppress output\n" + " --wait For (re)start, wait until service stopped again\n" + " For is-system-running, wait until startup is completed\n" + " --no-block Do not wait until operation finished\n" + " --no-wall Don't send wall message before halt/power-off/reboot\n" + " --no-reload Don't reload daemon after en-/dis-abling unit files\n" + " --no-legend Do not print a legend (column headers and hints)\n" + " --no-pager Do not pipe output into a pager\n" + " --no-ask-password Do not ask for system passwords\n" + " --global Enable/disable/mask unit files globally\n" + " --runtime Enable/disable/mask unit files temporarily until next\n" + " reboot\n" + " -f --force When enabling unit files, override existing symlinks\n" + " When shutting down, execute action immediately\n" + " --preset-mode= Apply only enable, only disable, or all presets\n" + " --root=PATH Enable/disable/mask unit files in the specified root\n" + " directory\n" + " -n --lines=INTEGER Number of journal entries to show\n" + " -o --output=STRING Change journal output mode (short, short-precise,\n" + " short-iso, short-iso-precise, short-full,\n" + " short-monotonic, short-unix,\n" + " verbose, export, json, json-pretty, json-sse, cat)\n" + " --firmware-setup Tell the firmware to show the setup menu on next boot\n" + " --boot-loader-menu=TIME\n" + " Boot into boot loader menu on next boot\n" + " --boot-loader-entry=NAME\n" + " Boot into a specific boot loader entry on next boot\n" + " --plain Print unit dependencies as a list instead of a tree\n" + " --timestamp=FORMAT Change format of printed timestamps.\n" + " 'pretty' (default): 'Day YYYY-MM-DD HH:MM:SS TZ\n" + " 'us': 'Day YYYY-MM-DD HH:MM:SS.UUUUUU TZ\n" + " 'utc': 'Day YYYY-MM-DD HH:MM:SS UTC\n" + " 'us+utc': 'Day YYYY-MM-DD HH:MM:SS.UUUUUU UTC\n" + "\nSee the %2$s for details.\n" + , program_invocation_short_name + , link + , ansi_underline(), ansi_normal() + , ansi_highlight(), ansi_normal() + ); + + return 0; +} + +static void help_types(void) { + if (!arg_no_legend) + puts("Available unit types:"); + + DUMP_STRING_TABLE(unit_type, UnitType, _UNIT_TYPE_MAX); +} + +static void help_states(void) { + if (!arg_no_legend) + puts("Available unit load states:"); + DUMP_STRING_TABLE(unit_load_state, UnitLoadState, _UNIT_LOAD_STATE_MAX); + + if (!arg_no_legend) + puts("\nAvailable unit active states:"); + DUMP_STRING_TABLE(unit_active_state, UnitActiveState, _UNIT_ACTIVE_STATE_MAX); + + if (!arg_no_legend) + puts("\nAvailable unit file states:"); + DUMP_STRING_TABLE(unit_file_state, UnitFileState, _UNIT_FILE_STATE_MAX); + + if (!arg_no_legend) + puts("\nAvailable automount unit substates:"); + DUMP_STRING_TABLE(automount_state, AutomountState, _AUTOMOUNT_STATE_MAX); + + if (!arg_no_legend) + puts("\nAvailable device unit substates:"); + DUMP_STRING_TABLE(device_state, DeviceState, _DEVICE_STATE_MAX); + + if (!arg_no_legend) + puts("\nAvailable mount unit substates:"); + DUMP_STRING_TABLE(mount_state, MountState, _MOUNT_STATE_MAX); + + if (!arg_no_legend) + puts("\nAvailable path unit substates:"); + DUMP_STRING_TABLE(path_state, PathState, _PATH_STATE_MAX); + + if (!arg_no_legend) + puts("\nAvailable scope unit substates:"); + DUMP_STRING_TABLE(scope_state, ScopeState, _SCOPE_STATE_MAX); + + if (!arg_no_legend) + puts("\nAvailable service unit substates:"); + DUMP_STRING_TABLE(service_state, ServiceState, _SERVICE_STATE_MAX); + + if (!arg_no_legend) + puts("\nAvailable slice unit substates:"); + DUMP_STRING_TABLE(slice_state, SliceState, _SLICE_STATE_MAX); + + if (!arg_no_legend) + puts("\nAvailable socket unit substates:"); + DUMP_STRING_TABLE(socket_state, SocketState, _SOCKET_STATE_MAX); + + if (!arg_no_legend) + puts("\nAvailable swap unit substates:"); + DUMP_STRING_TABLE(swap_state, SwapState, _SWAP_STATE_MAX); + + if (!arg_no_legend) + puts("\nAvailable target unit substates:"); + DUMP_STRING_TABLE(target_state, TargetState, _TARGET_STATE_MAX); + + if (!arg_no_legend) + puts("\nAvailable timer unit substates:"); + DUMP_STRING_TABLE(timer_state, TimerState, _TIMER_STATE_MAX); +} + +static int systemctl_parse_argv(int argc, char *argv[]) { + enum { + ARG_FAIL = 0x100, + ARG_REVERSE, + ARG_AFTER, + ARG_BEFORE, + ARG_DRY_RUN, + ARG_SHOW_TYPES, + ARG_IRREVERSIBLE, + ARG_IGNORE_DEPENDENCIES, + ARG_VALUE, + ARG_VERSION, + ARG_USER, + ARG_SYSTEM, + ARG_GLOBAL, + ARG_NO_BLOCK, + ARG_NO_LEGEND, + ARG_NO_PAGER, + ARG_NO_WALL, + ARG_ROOT, + ARG_NO_RELOAD, + ARG_KILL_WHO, + ARG_NO_ASK_PASSWORD, + ARG_FAILED, + ARG_RUNTIME, + ARG_PLAIN, + ARG_STATE, + ARG_JOB_MODE, + ARG_PRESET_MODE, + ARG_FIRMWARE_SETUP, + ARG_BOOT_LOADER_MENU, + ARG_BOOT_LOADER_ENTRY, + ARG_NOW, + ARG_MESSAGE, + ARG_WITH_DEPENDENCIES, + ARG_WAIT, + ARG_WHAT, + ARG_REBOOT_ARG, + ARG_TIMESTAMP_STYLE, + }; + + static const struct option options[] = { + { "help", no_argument, NULL, 'h' }, + { "version", no_argument, NULL, ARG_VERSION }, + { "type", required_argument, NULL, 't' }, + { "property", required_argument, NULL, 'p' }, + { "all", no_argument, NULL, 'a' }, + { "reverse", no_argument, NULL, ARG_REVERSE }, + { "after", no_argument, NULL, ARG_AFTER }, + { "before", no_argument, NULL, ARG_BEFORE }, + { "show-types", no_argument, NULL, ARG_SHOW_TYPES }, + { "failed", no_argument, NULL, ARG_FAILED }, /* compatibility only */ + { "full", no_argument, NULL, 'l' }, + { "job-mode", required_argument, NULL, ARG_JOB_MODE }, + { "fail", no_argument, NULL, ARG_FAIL }, /* compatibility only */ + { "irreversible", no_argument, NULL, ARG_IRREVERSIBLE }, /* compatibility only */ + { "ignore-dependencies", no_argument, NULL, ARG_IGNORE_DEPENDENCIES }, /* compatibility only */ + { "ignore-inhibitors", no_argument, NULL, 'i' }, + { "value", no_argument, NULL, ARG_VALUE }, + { "user", no_argument, NULL, ARG_USER }, + { "system", no_argument, NULL, ARG_SYSTEM }, + { "global", no_argument, NULL, ARG_GLOBAL }, + { "wait", no_argument, NULL, ARG_WAIT }, + { "no-block", no_argument, NULL, ARG_NO_BLOCK }, + { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, + { "no-pager", no_argument, NULL, ARG_NO_PAGER }, + { "no-wall", no_argument, NULL, ARG_NO_WALL }, + { "dry-run", no_argument, NULL, ARG_DRY_RUN }, + { "quiet", no_argument, NULL, 'q' }, + { "root", required_argument, NULL, ARG_ROOT }, + { "force", no_argument, NULL, 'f' }, + { "no-reload", no_argument, NULL, ARG_NO_RELOAD }, + { "kill-who", required_argument, NULL, ARG_KILL_WHO }, + { "signal", required_argument, NULL, 's' }, + { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD }, + { "host", required_argument, NULL, 'H' }, + { "machine", required_argument, NULL, 'M' }, + { "runtime", no_argument, NULL, ARG_RUNTIME }, + { "lines", required_argument, NULL, 'n' }, + { "output", required_argument, NULL, 'o' }, + { "plain", no_argument, NULL, ARG_PLAIN }, + { "state", required_argument, NULL, ARG_STATE }, + { "recursive", no_argument, NULL, 'r' }, + { "with-dependencies", no_argument, NULL, ARG_WITH_DEPENDENCIES }, + { "preset-mode", required_argument, NULL, ARG_PRESET_MODE }, + { "firmware-setup", no_argument, NULL, ARG_FIRMWARE_SETUP }, + { "boot-loader-menu", required_argument, NULL, ARG_BOOT_LOADER_MENU }, + { "boot-loader-entry", required_argument, NULL, ARG_BOOT_LOADER_ENTRY }, + { "now", no_argument, NULL, ARG_NOW }, + { "message", required_argument, NULL, ARG_MESSAGE }, + { "show-transaction", no_argument, NULL, 'T' }, + { "what", required_argument, NULL, ARG_WHAT }, + { "reboot-argument", required_argument, NULL, ARG_REBOOT_ARG }, + { "timestamp", required_argument, NULL, ARG_TIMESTAMP_STYLE }, + {} + }; + + int c, r; + + assert(argc >= 0); + assert(argv); + + /* We default to allowing interactive authorization only in systemctl (not in the legacy commands) */ + arg_ask_password = true; + + while ((c = getopt_long(argc, argv, "ht:p:P:alqfs:H:M:n:o:iTr.::", options, NULL)) >= 0) + + switch (c) { + + case 'h': + return systemctl_help(); + + case ARG_VERSION: + return version(); + + case 't': { + const char *p; + + if (isempty(optarg)) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "--type= requires arguments."); + + for (p = optarg;;) { + _cleanup_free_ char *type = NULL; + + r = extract_first_word(&p, &type, ",", 0); + if (r < 0) + return log_error_errno(r, "Failed to parse type: %s", optarg); + if (r == 0) + break; + + if (streq(type, "help")) { + help_types(); + return 0; + } + + if (unit_type_from_string(type) >= 0) { + if (strv_consume(&arg_types, TAKE_PTR(type)) < 0) + return log_oom(); + continue; + } + + /* It's much nicer to use --state= for load states, but let's support this in + * --types= too for compatibility with old versions */ + if (unit_load_state_from_string(type) >= 0) { + if (strv_consume(&arg_states, TAKE_PTR(type)) < 0) + return log_oom(); + continue; + } + + log_error("Unknown unit type or load state '%s'.", type); + return log_info_errno(SYNTHETIC_ERRNO(EINVAL), + "Use -t help to see a list of allowed values."); + } + + break; + } + + case 'P': + arg_value = true; + _fallthrough_; + + case 'p': + /* Make sure that if the empty property list was specified, we won't show any + properties. */ + if (isempty(optarg) && !arg_properties) { + arg_properties = new0(char*, 1); + if (!arg_properties) + return log_oom(); + } else { + const char *p; + + for (p = optarg;;) { + _cleanup_free_ char *prop = NULL; + + r = extract_first_word(&p, &prop, ",", 0); + if (r < 0) + return log_error_errno(r, "Failed to parse property: %s", optarg); + if (r == 0) + break; + + if (strv_consume(&arg_properties, TAKE_PTR(prop)) < 0) + return log_oom(); + } + } + + /* If the user asked for a particular property, show it, even if it is empty. */ + arg_all = true; + + break; + + case 'a': + arg_all = true; + break; + + case ARG_REVERSE: + arg_dependency = DEPENDENCY_REVERSE; + break; + + case ARG_AFTER: + arg_dependency = DEPENDENCY_AFTER; + arg_jobs_after = true; + break; + + case ARG_BEFORE: + arg_dependency = DEPENDENCY_BEFORE; + arg_jobs_before = true; + break; + + case ARG_SHOW_TYPES: + arg_show_types = true; + break; + + case ARG_VALUE: + arg_value = true; + break; + + case ARG_JOB_MODE: + arg_job_mode = optarg; + break; + + case ARG_FAIL: + arg_job_mode = "fail"; + break; + + case ARG_IRREVERSIBLE: + arg_job_mode = "replace-irreversibly"; + break; + + case ARG_IGNORE_DEPENDENCIES: + arg_job_mode = "ignore-dependencies"; + break; + + case ARG_USER: + arg_scope = UNIT_FILE_USER; + break; + + case ARG_SYSTEM: + arg_scope = UNIT_FILE_SYSTEM; + break; + + case ARG_GLOBAL: + arg_scope = UNIT_FILE_GLOBAL; + break; + + case ARG_WAIT: + arg_wait = true; + break; + + case ARG_NO_BLOCK: + arg_no_block = true; + break; + + case ARG_NO_LEGEND: + arg_no_legend = true; + break; + + case ARG_NO_PAGER: + arg_pager_flags |= PAGER_DISABLE; + break; + + case ARG_NO_WALL: + arg_no_wall = true; + break; + + case ARG_ROOT: + r = parse_path_argument_and_warn(optarg, false, &arg_root); + if (r < 0) + return r; + break; + + case 'l': + arg_full = true; + break; + + case ARG_FAILED: + if (strv_extend(&arg_states, "failed") < 0) + return log_oom(); + + break; + + case ARG_DRY_RUN: + arg_dry_run = true; + break; + + case 'q': + arg_quiet = true; + break; + + case 'f': + arg_force++; + break; + + case ARG_NO_RELOAD: + arg_no_reload = true; + break; + + case ARG_KILL_WHO: + arg_kill_who = optarg; + break; + + case 's': + if (streq(optarg, "help")) { + DUMP_STRING_TABLE(signal, int, _NSIG); + return 0; + } + + arg_signal = signal_from_string(optarg); + if (arg_signal < 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Failed to parse signal string %s.", + optarg); + break; + + case ARG_NO_ASK_PASSWORD: + arg_ask_password = false; + break; + + case 'H': + arg_transport = BUS_TRANSPORT_REMOTE; + arg_host = optarg; + break; + + case 'M': + arg_transport = BUS_TRANSPORT_MACHINE; + arg_host = optarg; + break; + + case ARG_RUNTIME: + arg_runtime = true; + break; + + case 'n': + if (safe_atou(optarg, &arg_lines) < 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Failed to parse lines '%s'", + optarg); + break; + + case 'o': + if (streq(optarg, "help")) { + DUMP_STRING_TABLE(output_mode, OutputMode, _OUTPUT_MODE_MAX); + return 0; + } + + arg_output = output_mode_from_string(optarg); + if (arg_output < 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Unknown output '%s'.", + optarg); + + if (OUTPUT_MODE_IS_JSON(arg_output)) { + arg_no_legend = true; + arg_plain = true; + } + break; + + case 'i': + arg_ignore_inhibitors = true; + break; + + case ARG_PLAIN: + arg_plain = true; + break; + + case ARG_FIRMWARE_SETUP: + arg_firmware_setup = true; + break; + + case ARG_BOOT_LOADER_MENU: + + r = parse_sec(optarg, &arg_boot_loader_menu); + if (r < 0) + return log_error_errno(r, "Failed to parse --boot-loader-menu= argument '%s': %m", optarg); + + break; + + case ARG_BOOT_LOADER_ENTRY: + + if (streq(optarg, "help")) { /* Yes, this means, "help" is not a valid boot loader entry name we can deal with */ + r = help_boot_loader_entry(); + if (r < 0) + return r; + + return 0; + } + + arg_boot_loader_entry = empty_to_null(optarg); + break; + + case ARG_STATE: { + const char *p; + + if (isempty(optarg)) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "--state= requires arguments."); + + for (p = optarg;;) { + _cleanup_free_ char *s = NULL; + + r = extract_first_word(&p, &s, ",", 0); + if (r < 0) + return log_error_errno(r, "Failed to parse state: %s", optarg); + if (r == 0) + break; + + if (streq(s, "help")) { + help_states(); + return 0; + } + + if (strv_consume(&arg_states, TAKE_PTR(s)) < 0) + return log_oom(); + } + break; + } + + case 'r': + if (geteuid() != 0) + return log_error_errno(SYNTHETIC_ERRNO(EPERM), + "--recursive requires root privileges."); + + arg_recursive = true; + break; + + case ARG_PRESET_MODE: + if (streq(optarg, "help")) { + DUMP_STRING_TABLE(unit_file_preset_mode, UnitFilePresetMode, _UNIT_FILE_PRESET_MAX); + return 0; + } + + arg_preset_mode = unit_file_preset_mode_from_string(optarg); + if (arg_preset_mode < 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Failed to parse preset mode: %s.", optarg); + + break; + + case ARG_NOW: + arg_now = true; + break; + + case ARG_MESSAGE: + if (strv_extend(&arg_wall, optarg) < 0) + return log_oom(); + break; + + case 'T': + arg_show_transaction = true; + break; + + case ARG_WITH_DEPENDENCIES: + arg_with_dependencies = true; + break; + + case ARG_WHAT: { + const char *p; + + if (isempty(optarg)) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "--what= requires arguments."); + + for (p = optarg;;) { + _cleanup_free_ char *k = NULL; + + r = extract_first_word(&p, &k, ",", 0); + if (r < 0) + return log_error_errno(r, "Failed to parse directory type: %s", optarg); + if (r == 0) + break; + + if (streq(k, "help")) { + puts("runtime\n" + "state\n" + "cache\n" + "logs\n" + "configuration"); + return 0; + } + + r = strv_consume(&arg_clean_what, TAKE_PTR(k)); + if (r < 0) + return log_oom(); + } + + break; + } + + case ARG_REBOOT_ARG: + arg_reboot_argument = optarg; + break; + + case ARG_TIMESTAMP_STYLE: + if (streq(optarg, "help")) { + DUMP_STRING_TABLE(timestamp_style, TimestampStyle, _TIMESTAMP_STYLE_MAX); + return 0; + } + + arg_timestamp_style = timestamp_style_from_string(optarg); + if (arg_timestamp_style < 0) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Invalid value: %s.", optarg); + + break; + + case '.': + /* Output an error mimicking getopt, and print a hint afterwards */ + log_error("%s: invalid option -- '.'", program_invocation_name); + log_notice("Hint: to specify units starting with a dash, use \"--\":\n" + " %s [OPTIONS...] COMMAND -- -.%s ...", + program_invocation_name, optarg ?: "mount"); + _fallthrough_; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + + if (arg_transport != BUS_TRANSPORT_LOCAL && arg_scope != UNIT_FILE_SYSTEM) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Cannot access user instance remotely."); + + if (arg_wait && arg_no_block) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "--wait may not be combined with --no-block."); + + return 1; +} + +static int parse_argv(int argc, char *argv[]) { + assert(argc >= 0); + assert(argv); + + if (program_invocation_short_name) { + + if (strstr(program_invocation_short_name, "halt")) { + arg_action = ACTION_HALT; + return halt_parse_argv(argc, argv); + + } else if (strstr(program_invocation_short_name, "poweroff")) { + arg_action = ACTION_POWEROFF; + return halt_parse_argv(argc, argv); + + } else if (strstr(program_invocation_short_name, "reboot")) { + if (kexec_loaded()) + arg_action = ACTION_KEXEC; + else + arg_action = ACTION_REBOOT; + return halt_parse_argv(argc, argv); + + } else if (strstr(program_invocation_short_name, "shutdown")) { + arg_action = ACTION_POWEROFF; + return shutdown_parse_argv(argc, argv); + + } else if (strstr(program_invocation_short_name, "init")) { + + /* Matches invocations as "init" as well as "telinit", which are synonymous when run + * as PID != 1 on SysV. + * + * On SysV "telinit" was the official command to communicate with PID 1, but "init" would + * redirect itself to "telinit" if called with PID != 1. We follow the same logic here still, + * though we add one level of indirection, as we implement "telinit" in "systemctl". Hence, for + * us if you invoke "init" you get "systemd", but it will execve() "systemctl" immediately with + * argv[] unmodified if PID is != 1. If you invoke "telinit" you directly get "systemctl". In + * both cases we shall do the same thing, which is why we do strstr(p_i_s_n, "init") here, as a + * quick way to match both. + * + * Also see redirect_telinit() in src/core/main.c. */ + + if (sd_booted() > 0) { + arg_action = _ACTION_INVALID; + return telinit_parse_argv(argc, argv); + } else { + /* Hmm, so some other init system is running, we need to forward this request to + * it. For now we simply guess that it is Upstart. */ + + (void) rlimit_nofile_safe(); + execv(TELINIT, argv); + + return log_error_errno(SYNTHETIC_ERRNO(EIO), + "Couldn't find an alternative telinit implementation to spawn."); + } + + } else if (strstr(program_invocation_short_name, "runlevel")) { + arg_action = ACTION_RUNLEVEL; + return runlevel_parse_argv(argc, argv); + } + } + + arg_action = ACTION_SYSTEMCTL; + return systemctl_parse_argv(argc, argv); +} + +static int systemctl_main(int argc, char *argv[]) { + static const Verb verbs[] = { + { "list-units", VERB_ANY, VERB_ANY, VERB_DEFAULT|VERB_ONLINE_ONLY, list_units }, + { "list-unit-files", VERB_ANY, VERB_ANY, 0, list_unit_files }, + { "list-sockets", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, list_sockets }, + { "list-timers", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, list_timers }, + { "list-jobs", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, list_jobs }, + { "list-machines", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, list_machines }, + { "clear-jobs", VERB_ANY, 1, VERB_ONLINE_ONLY, trivial_method }, + { "cancel", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, cancel_job }, + { "start", 2, VERB_ANY, VERB_ONLINE_ONLY, start_unit }, + { "stop", 2, VERB_ANY, VERB_ONLINE_ONLY, start_unit }, + { "condstop", 2, VERB_ANY, VERB_ONLINE_ONLY, start_unit }, /* For compatibility with ALTLinux */ + { "reload", 2, VERB_ANY, VERB_ONLINE_ONLY, start_unit }, + { "restart", 2, VERB_ANY, VERB_ONLINE_ONLY, start_unit }, + { "try-restart", 2, VERB_ANY, VERB_ONLINE_ONLY, start_unit }, + { "reload-or-restart", 2, VERB_ANY, VERB_ONLINE_ONLY, start_unit }, + { "reload-or-try-restart", 2, VERB_ANY, VERB_ONLINE_ONLY, start_unit }, /* For compatibility with old systemctl <= 228 */ + { "try-reload-or-restart", 2, VERB_ANY, VERB_ONLINE_ONLY, start_unit }, + { "force-reload", 2, VERB_ANY, VERB_ONLINE_ONLY, start_unit }, /* For compatibility with SysV */ + { "condreload", 2, VERB_ANY, VERB_ONLINE_ONLY, start_unit }, /* For compatibility with ALTLinux */ + { "condrestart", 2, VERB_ANY, VERB_ONLINE_ONLY, start_unit }, /* For compatibility with RH */ + { "isolate", 2, 2, VERB_ONLINE_ONLY, start_unit }, + { "kill", 2, VERB_ANY, VERB_ONLINE_ONLY, kill_unit }, + { "clean", 2, VERB_ANY, VERB_ONLINE_ONLY, clean_or_freeze_unit }, + { "freeze", 2, VERB_ANY, VERB_ONLINE_ONLY, clean_or_freeze_unit }, + { "thaw", 2, VERB_ANY, VERB_ONLINE_ONLY, clean_or_freeze_unit }, + { "is-active", 2, VERB_ANY, VERB_ONLINE_ONLY, check_unit_active }, + { "check", 2, VERB_ANY, VERB_ONLINE_ONLY, check_unit_active }, /* deprecated alias of is-active */ + { "is-failed", 2, VERB_ANY, VERB_ONLINE_ONLY, check_unit_failed }, + { "show", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, show }, + { "cat", 2, VERB_ANY, VERB_ONLINE_ONLY, cat }, + { "status", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, show }, + { "help", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, show }, + { "daemon-reload", VERB_ANY, 1, VERB_ONLINE_ONLY, daemon_reload }, + { "daemon-reexec", VERB_ANY, 1, VERB_ONLINE_ONLY, daemon_reload }, + { "log-level", VERB_ANY, 2, VERB_ONLINE_ONLY, log_setting }, + { "log-target", VERB_ANY, 2, VERB_ONLINE_ONLY, log_setting }, + { "service-log-level", 2, 3, VERB_ONLINE_ONLY, service_log_setting }, + { "service-log-target", 2, 3, VERB_ONLINE_ONLY, service_log_setting }, + { "service-watchdogs", VERB_ANY, 2, VERB_ONLINE_ONLY, service_watchdogs }, + { "show-environment", VERB_ANY, 1, VERB_ONLINE_ONLY, show_environment }, + { "set-environment", 2, VERB_ANY, VERB_ONLINE_ONLY, set_environment }, + { "unset-environment", 2, VERB_ANY, VERB_ONLINE_ONLY, set_environment }, + { "import-environment", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, import_environment }, + { "halt", VERB_ANY, 1, VERB_ONLINE_ONLY, start_system_special }, + { "poweroff", VERB_ANY, 1, VERB_ONLINE_ONLY, start_system_special }, + { "reboot", VERB_ANY, 2, VERB_ONLINE_ONLY, start_system_special }, + { "kexec", VERB_ANY, 1, VERB_ONLINE_ONLY, start_system_special }, + { "suspend", VERB_ANY, 1, VERB_ONLINE_ONLY, start_system_special }, + { "hibernate", VERB_ANY, 1, VERB_ONLINE_ONLY, start_system_special }, + { "hybrid-sleep", VERB_ANY, 1, VERB_ONLINE_ONLY, start_system_special }, + { "suspend-then-hibernate",VERB_ANY, 1, VERB_ONLINE_ONLY, start_system_special }, + { "default", VERB_ANY, 1, VERB_ONLINE_ONLY, start_special }, + { "rescue", VERB_ANY, 1, VERB_ONLINE_ONLY, start_system_special }, + { "emergency", VERB_ANY, 1, VERB_ONLINE_ONLY, start_system_special }, + { "exit", VERB_ANY, 2, VERB_ONLINE_ONLY, start_special }, + { "reset-failed", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, reset_failed }, + { "enable", 2, VERB_ANY, 0, enable_unit }, + { "disable", 2, VERB_ANY, 0, enable_unit }, + { "is-enabled", 2, VERB_ANY, 0, unit_is_enabled }, + { "reenable", 2, VERB_ANY, 0, enable_unit }, + { "preset", 2, VERB_ANY, 0, enable_unit }, + { "preset-all", VERB_ANY, 1, 0, preset_all }, + { "mask", 2, VERB_ANY, 0, enable_unit }, + { "unmask", 2, VERB_ANY, 0, enable_unit }, + { "link", 2, VERB_ANY, 0, enable_unit }, + { "revert", 2, VERB_ANY, 0, enable_unit }, + { "switch-root", 2, VERB_ANY, VERB_ONLINE_ONLY, switch_root }, + { "list-dependencies", VERB_ANY, VERB_ANY, VERB_ONLINE_ONLY, list_dependencies }, + { "set-default", 2, 2, 0, set_default }, + { "get-default", VERB_ANY, 1, 0, get_default }, + { "set-property", 3, VERB_ANY, VERB_ONLINE_ONLY, set_property }, + { "is-system-running", VERB_ANY, 1, 0, is_system_running }, + { "add-wants", 3, VERB_ANY, 0, add_dependency }, + { "add-requires", 3, VERB_ANY, 0, add_dependency }, + { "edit", 2, VERB_ANY, VERB_ONLINE_ONLY, edit }, + {} + }; + + const Verb *verb = verbs_find_verb(argv[optind], verbs); + if (verb && (verb->flags & VERB_ONLINE_ONLY) && arg_root) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Verb '%s' cannot be used with --root=.", + argv[optind] ?: verb->verb); + + return dispatch_verb(argc, argv, verbs, NULL); +} + +static int run(int argc, char *argv[]) { + int r; + + setlocale(LC_ALL, ""); + log_parse_environment_cli(); + log_open(); + + /* The journal merging logic potentially needs a lot of fds. */ + (void) rlimit_nofile_bump(HIGH_RLIMIT_NOFILE); + + sigbus_install(); + + r = parse_argv(argc, argv); + if (r <= 0) + goto finish; + + if (arg_action != ACTION_SYSTEMCTL && running_in_chroot() > 0) { + if (!arg_quiet) + log_info("Running in chroot, ignoring request."); + r = 0; + goto finish; + } + + /* systemctl_main() will print an error message for the bus connection, but only if it needs to */ + + switch (arg_action) { + + case ACTION_SYSTEMCTL: + r = systemctl_main(argc, argv); + break; + + /* Legacy command aliases set arg_action. They provide some fallbacks, e.g. to tell sysvinit to + * reboot after you have installed systemd binaries. */ + + case ACTION_HALT: + case ACTION_POWEROFF: + case ACTION_REBOOT: + case ACTION_KEXEC: + r = halt_main(); + break; + + case ACTION_RUNLEVEL2: + case ACTION_RUNLEVEL3: + case ACTION_RUNLEVEL4: + case ACTION_RUNLEVEL5: + case ACTION_RESCUE: + r = start_with_fallback(); + break; + + case ACTION_RELOAD: + case ACTION_REEXEC: + r = reload_with_fallback(); + break; + + case ACTION_CANCEL_SHUTDOWN: + r = logind_cancel_shutdown(); + break; + + case ACTION_RUNLEVEL: + r = runlevel_main(); + break; + + case ACTION_EXIT: + case ACTION_SUSPEND: + case ACTION_HIBERNATE: + case ACTION_HYBRID_SLEEP: + case ACTION_SUSPEND_THEN_HIBERNATE: + case ACTION_EMERGENCY: + case ACTION_DEFAULT: + /* systemctl verbs with no equivalent in the legacy commands. These cannot appear in + * arg_action. Fall through. */ + + case _ACTION_INVALID: + default: + assert_not_reached("Unknown action"); + } + +finish: + release_busses(); + + /* Note that we return r here, not 0, so that we can implement the LSB-like return codes */ + return r; +} + +DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); diff --git a/src/systemctl/systemctl.h b/src/systemctl/systemctl.h new file mode 100644 index 0000000..f8cefc9 --- /dev/null +++ b/src/systemctl/systemctl.h @@ -0,0 +1,92 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#include <stdbool.h> + +#include "bus-util.h" +#include "install.h" +#include "output-mode.h" +#include "pager.h" + +enum action { + ACTION_SYSTEMCTL, + ACTION_HALT, + ACTION_POWEROFF, + ACTION_REBOOT, + ACTION_KEXEC, + ACTION_EXIT, + ACTION_SUSPEND, + ACTION_HIBERNATE, + ACTION_HYBRID_SLEEP, + ACTION_SUSPEND_THEN_HIBERNATE, + ACTION_RUNLEVEL2, + ACTION_RUNLEVEL3, + ACTION_RUNLEVEL4, + ACTION_RUNLEVEL5, + ACTION_RESCUE, + ACTION_EMERGENCY, + ACTION_DEFAULT, + ACTION_RELOAD, + ACTION_REEXEC, + ACTION_RUNLEVEL, + ACTION_CANCEL_SHUTDOWN, + _ACTION_MAX, + _ACTION_INVALID = -1 +}; + +enum dependency { + DEPENDENCY_FORWARD, + DEPENDENCY_REVERSE, + DEPENDENCY_AFTER, + DEPENDENCY_BEFORE, + _DEPENDENCY_MAX +}; + +extern char **arg_types; +extern char **arg_states; +extern char **arg_properties; +extern bool arg_all; +extern enum dependency arg_dependency; +extern const char *arg_job_mode; +extern UnitFileScope arg_scope; +extern bool arg_wait; +extern bool arg_no_block; +extern bool arg_no_legend; +extern PagerFlags arg_pager_flags; +extern bool arg_no_wtmp; +extern bool arg_no_sync; +extern bool arg_no_wall; +extern bool arg_no_reload; +extern bool arg_value; +extern bool arg_show_types; +extern bool arg_ignore_inhibitors; +extern bool arg_dry_run; +extern bool arg_quiet; +extern bool arg_full; +extern bool arg_recursive; +extern bool arg_with_dependencies; +extern bool arg_show_transaction; +extern int arg_force; +extern bool arg_ask_password; +extern bool arg_runtime; +extern UnitFilePresetMode arg_preset_mode; +extern char **arg_wall; +extern const char *arg_kill_who; +extern int arg_signal; +extern char *arg_root; +extern usec_t arg_when; +extern const char *arg_reboot_argument; +extern enum action arg_action; +extern BusTransport arg_transport; +extern const char *arg_host; +extern unsigned arg_lines; +extern OutputMode arg_output; +extern bool arg_plain; +extern bool arg_firmware_setup; +extern usec_t arg_boot_loader_menu; +extern const char *arg_boot_loader_entry; +extern bool arg_now; +extern bool arg_jobs_before; +extern bool arg_jobs_after; +extern char **arg_clean_what; +extern TimestampStyle arg_timestamp_style; diff --git a/src/systemctl/systemd-sysv-install.SKELETON b/src/systemctl/systemd-sysv-install.SKELETON new file mode 100755 index 0000000..8c16cf9 --- /dev/null +++ b/src/systemctl/systemd-sysv-install.SKELETON @@ -0,0 +1,49 @@ +#!/bin/sh +# This script is called by "systemctl enable/disable" when the given unit is a +# SysV init.d script. It needs to call the distribution's mechanism for +# enabling/disabling those, such as chkconfig, update-rc.d, or similar. This +# can optionally take a --root argument for enabling a SysV init script +# in a chroot or similar. +set -e + +usage() { + echo "Usage: $0 [--root=path] enable|disable|is-enabled <sysv script name>" >&2 + exit 1 +} + +unset ROOT + +# parse options +eval set -- "$(getopt -o r: --long root: -- "$@")" +while true; do + case "$1" in + -r|--root) + ROOT="$2" + shift 2 ;; + --) shift ; break ;; + *) usage ;; + esac +done + +NAME="$2" +[ -n "$NAME" ] || usage + +case "$1" in + enable) + # call the command to enable SysV init script $NAME here + # (consider optional $ROOT) + echo "IMPLEMENT ME: enabling SysV init.d script $NAME" + ;; + disable) + # call the command to disable SysV init script $NAME here + # (consider optional $ROOT) + echo "IMPLEMENT ME: disabling SysV init.d script $NAME" + ;; + is-enabled) + # exit with 0 if $NAME is enabled, non-zero if it is disabled + # (consider optional $ROOT) + echo "IMPLEMENT ME: checking SysV init.d script $NAME" + ;; + *) + usage ;; +esac |