diff options
Diffstat (limited to '')
| -rw-r--r-- | src/run/run.c | 1655 |
1 files changed, 1655 insertions, 0 deletions
diff --git a/src/run/run.c b/src/run/run.c new file mode 100644 index 0000000..e9e3128 --- /dev/null +++ b/src/run/run.c @@ -0,0 +1,1655 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ + +#include <getopt.h> +#include <stdio.h> + +#include "sd-bus.h" +#include "sd-event.h" + +#include "alloc-util.h" +#include "bus-error.h" +#include "bus-unit-util.h" +#include "bus-util.h" +#include "calendarspec.h" +#include "env-util.h" +#include "fd-util.h" +#include "format-util.h" +#include "main-func.h" +#include "parse-util.h" +#include "path-util.h" +#include "pretty-print.h" +#include "process-util.h" +#include "ptyfwd.h" +#include "signal-util.h" +#include "spawn-polkit-agent.h" +#include "strv.h" +#include "terminal-util.h" +#include "unit-def.h" +#include "unit-name.h" +#include "user-util.h" + +static bool arg_ask_password = true; +static bool arg_scope = false; +static bool arg_remain_after_exit = false; +static bool arg_no_block = false; +static bool arg_wait = false; +static const char *arg_unit = NULL; +static const char *arg_description = NULL; +static const char *arg_slice = NULL; +static bool arg_send_sighup = false; +static BusTransport arg_transport = BUS_TRANSPORT_LOCAL; +static const char *arg_host = NULL; +static bool arg_user = false; +static const char *arg_service_type = NULL; +static const char *arg_exec_user = NULL; +static const char *arg_exec_group = NULL; +static int arg_nice = 0; +static bool arg_nice_set = false; +static char **arg_environment = NULL; +static char **arg_property = NULL; +static enum { + ARG_STDIO_NONE, /* The default, as it is for normal services, stdin connected to /dev/null, and stdout+stderr to the journal */ + ARG_STDIO_PTY, /* Interactive behaviour, requested by --pty: we allocate a pty and connect it to the TTY we are invoked from */ + ARG_STDIO_DIRECT, /* Directly pass our stdin/stdout/stderr to the activated service, useful for usage in shell pipelines, requested by --pipe */ + ARG_STDIO_AUTO, /* If --pipe and --pty are used together we use --pty when invoked on a TTY, and --pipe otherwise */ +} arg_stdio = ARG_STDIO_NONE; +static char **arg_path_property = NULL; +static char **arg_socket_property = NULL; +static char **arg_timer_property = NULL; +static bool with_timer = false; +static bool arg_quiet = false; +static bool arg_aggressive_gc = false; +static char *arg_working_directory = NULL; +static bool arg_shell = false; +static char **arg_cmdline = NULL; + +STATIC_DESTRUCTOR_REGISTER(arg_environment, strv_freep); +STATIC_DESTRUCTOR_REGISTER(arg_property, strv_freep); +STATIC_DESTRUCTOR_REGISTER(arg_path_property, strv_freep); +STATIC_DESTRUCTOR_REGISTER(arg_socket_property, strv_freep); +STATIC_DESTRUCTOR_REGISTER(arg_timer_property, strv_freep); +STATIC_DESTRUCTOR_REGISTER(arg_working_directory, freep); +STATIC_DESTRUCTOR_REGISTER(arg_cmdline, strv_freep); + +static int help(void) { + _cleanup_free_ char *link = NULL; + int r; + + r = terminal_urlify_man("systemd-run", "1", &link); + if (r < 0) + return log_oom(); + + printf("%s [OPTIONS...] {COMMAND} [ARGS...]\n\n" + "Run the specified command in a transient scope or service.\n\n" + " -h --help Show this help\n" + " --version Show package version\n" + " --no-ask-password Do not prompt for password\n" + " --user Run as user unit\n" + " -H --host=[USER@]HOST Operate on remote host\n" + " -M --machine=CONTAINER Operate on local container\n" + " --scope Run this as scope rather than service\n" + " --unit=UNIT Run under the specified unit name\n" + " -p --property=NAME=VALUE Set service or scope unit property\n" + " --description=TEXT Description for unit\n" + " --slice=SLICE Run in the specified slice\n" + " --no-block Do not wait until operation finished\n" + " -r --remain-after-exit Leave service around until explicitly stopped\n" + " --wait Wait until service stopped again\n" + " --send-sighup Send SIGHUP when terminating\n" + " --service-type=TYPE Service type\n" + " --uid=USER Run as system user\n" + " --gid=GROUP Run as system group\n" + " --nice=NICE Nice level\n" + " --working-directory=PATH Set working directory\n" + " -d --same-dir Inherit working directory from caller\n" + " -E --setenv=NAME=VALUE Set environment\n" + " -t --pty Run service on pseudo TTY as STDIN/STDOUT/\n" + " STDERR\n" + " -P --pipe Pass STDIN/STDOUT/STDERR directly to service\n" + " -q --quiet Suppress information messages during runtime\n" + " -G --collect Unload unit after it ran, even when failed\n" + " -S --shell Invoke a $SHELL interactively\n\n" + "Path options:\n" + " --path-property=NAME=VALUE Set path unit property\n\n" + "Socket options:\n" + " --socket-property=NAME=VALUE Set socket unit property\n\n" + "Timer options:\n" + " --on-active=SECONDS Run after SECONDS delay\n" + " --on-boot=SECONDS Run SECONDS after machine was booted up\n" + " --on-startup=SECONDS Run SECONDS after systemd activation\n" + " --on-unit-active=SECONDS Run SECONDS after the last activation\n" + " --on-unit-inactive=SECONDS Run SECONDS after the last deactivation\n" + " --on-calendar=SPEC Realtime timer\n" + " --timer-property=NAME=VALUE Set timer unit property\n" + "\nSee the %s for details.\n" + , program_invocation_short_name + , link + ); + + return 0; +} + +static int add_timer_property(const char *name, const char *val) { + char *p; + + assert(name); + assert(val); + + p = strjoin(name, "=", val); + if (!p) + return log_oom(); + + if (strv_consume(&arg_timer_property, p) < 0) + return log_oom(); + + return 0; +} + +static int parse_argv(int argc, char *argv[]) { + + enum { + ARG_VERSION = 0x100, + ARG_USER, + ARG_SYSTEM, + ARG_SCOPE, + ARG_UNIT, + ARG_DESCRIPTION, + ARG_SLICE, + ARG_SEND_SIGHUP, + ARG_SERVICE_TYPE, + ARG_EXEC_USER, + ARG_EXEC_GROUP, + ARG_NICE, + ARG_ON_ACTIVE, + ARG_ON_BOOT, + ARG_ON_STARTUP, + ARG_ON_UNIT_ACTIVE, + ARG_ON_UNIT_INACTIVE, + ARG_ON_CALENDAR, + ARG_TIMER_PROPERTY, + ARG_PATH_PROPERTY, + ARG_SOCKET_PROPERTY, + ARG_NO_BLOCK, + ARG_NO_ASK_PASSWORD, + ARG_WAIT, + ARG_WORKING_DIRECTORY, + ARG_SHELL, + }; + + static const struct option options[] = { + { "help", no_argument, NULL, 'h' }, + { "version", no_argument, NULL, ARG_VERSION }, + { "user", no_argument, NULL, ARG_USER }, + { "system", no_argument, NULL, ARG_SYSTEM }, + { "scope", no_argument, NULL, ARG_SCOPE }, + { "unit", required_argument, NULL, ARG_UNIT }, + { "description", required_argument, NULL, ARG_DESCRIPTION }, + { "slice", required_argument, NULL, ARG_SLICE }, + { "remain-after-exit", no_argument, NULL, 'r' }, + { "send-sighup", no_argument, NULL, ARG_SEND_SIGHUP }, + { "host", required_argument, NULL, 'H' }, + { "machine", required_argument, NULL, 'M' }, + { "service-type", required_argument, NULL, ARG_SERVICE_TYPE }, + { "wait", no_argument, NULL, ARG_WAIT }, + { "uid", required_argument, NULL, ARG_EXEC_USER }, + { "gid", required_argument, NULL, ARG_EXEC_GROUP }, + { "nice", required_argument, NULL, ARG_NICE }, + { "setenv", required_argument, NULL, 'E' }, + { "property", required_argument, NULL, 'p' }, + { "tty", no_argument, NULL, 't' }, /* deprecated alias */ + { "pty", no_argument, NULL, 't' }, + { "pipe", no_argument, NULL, 'P' }, + { "quiet", no_argument, NULL, 'q' }, + { "on-active", required_argument, NULL, ARG_ON_ACTIVE }, + { "on-boot", required_argument, NULL, ARG_ON_BOOT }, + { "on-startup", required_argument, NULL, ARG_ON_STARTUP }, + { "on-unit-active", required_argument, NULL, ARG_ON_UNIT_ACTIVE }, + { "on-unit-inactive", required_argument, NULL, ARG_ON_UNIT_INACTIVE }, + { "on-calendar", required_argument, NULL, ARG_ON_CALENDAR }, + { "timer-property", required_argument, NULL, ARG_TIMER_PROPERTY }, + { "path-property", required_argument, NULL, ARG_PATH_PROPERTY }, + { "socket-property", required_argument, NULL, ARG_SOCKET_PROPERTY }, + { "no-block", no_argument, NULL, ARG_NO_BLOCK }, + { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD }, + { "collect", no_argument, NULL, 'G' }, + { "working-directory", required_argument, NULL, ARG_WORKING_DIRECTORY }, + { "same-dir", no_argument, NULL, 'd' }, + { "shell", no_argument, NULL, 'S' }, + {}, + }; + + bool with_trigger = false; + int r, c; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "+hrH:M:E:p:tPqGdS", options, NULL)) >= 0) + + switch (c) { + + case 'h': + return help(); + + case ARG_VERSION: + return version(); + + case ARG_NO_ASK_PASSWORD: + arg_ask_password = false; + break; + + case ARG_USER: + arg_user = true; + break; + + case ARG_SYSTEM: + arg_user = false; + break; + + case ARG_SCOPE: + arg_scope = true; + break; + + case ARG_UNIT: + arg_unit = optarg; + break; + + case ARG_DESCRIPTION: + arg_description = optarg; + break; + + case ARG_SLICE: + arg_slice = optarg; + break; + + case ARG_SEND_SIGHUP: + arg_send_sighup = true; + break; + + case 'r': + arg_remain_after_exit = true; + 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_SERVICE_TYPE: + arg_service_type = optarg; + break; + + case ARG_EXEC_USER: + arg_exec_user = optarg; + break; + + case ARG_EXEC_GROUP: + arg_exec_group = optarg; + break; + + case ARG_NICE: + r = parse_nice(optarg, &arg_nice); + if (r < 0) + return log_error_errno(r, "Failed to parse nice value: %s", optarg); + + arg_nice_set = true; + break; + + case 'E': + if (strv_extend(&arg_environment, optarg) < 0) + return log_oom(); + + break; + + case 'p': + if (strv_extend(&arg_property, optarg) < 0) + return log_oom(); + + break; + + case 't': /* --pty */ + if (IN_SET(arg_stdio, ARG_STDIO_DIRECT, ARG_STDIO_AUTO)) /* if --pipe is already used, upgrade to auto mode */ + arg_stdio = ARG_STDIO_AUTO; + else + arg_stdio = ARG_STDIO_PTY; + break; + + case 'P': /* --pipe */ + if (IN_SET(arg_stdio, ARG_STDIO_PTY, ARG_STDIO_AUTO)) /* If --pty is already used, upgrade to auto mode */ + arg_stdio = ARG_STDIO_AUTO; + else + arg_stdio = ARG_STDIO_DIRECT; + break; + + case 'q': + arg_quiet = true; + break; + + case ARG_ON_ACTIVE: + r = add_timer_property("OnActiveSec", optarg); + if (r < 0) + return r; + + with_timer = true; + break; + + case ARG_ON_BOOT: + r = add_timer_property("OnBootSec", optarg); + if (r < 0) + return r; + + with_timer = true; + break; + + case ARG_ON_STARTUP: + r = add_timer_property("OnStartupSec", optarg); + if (r < 0) + return r; + + with_timer = true; + break; + + case ARG_ON_UNIT_ACTIVE: + r = add_timer_property("OnUnitActiveSec", optarg); + if (r < 0) + return r; + + with_timer = true; + break; + + case ARG_ON_UNIT_INACTIVE: + r = add_timer_property("OnUnitInactiveSec", optarg); + if (r < 0) + return r; + + with_timer = true; + break; + + case ARG_ON_CALENDAR: + r = add_timer_property("OnCalendar", optarg); + if (r < 0) + return r; + + with_timer = true; + break; + + case ARG_TIMER_PROPERTY: + + if (strv_extend(&arg_timer_property, optarg) < 0) + return log_oom(); + + with_timer = with_timer || + STARTSWITH_SET(optarg, + "OnActiveSec=", + "OnBootSec=", + "OnStartupSec=", + "OnUnitActiveSec=", + "OnUnitInactiveSec=", + "OnCalendar="); + break; + + case ARG_PATH_PROPERTY: + + if (strv_extend(&arg_path_property, optarg) < 0) + return log_oom(); + + break; + + case ARG_SOCKET_PROPERTY: + + if (strv_extend(&arg_socket_property, optarg) < 0) + return log_oom(); + + break; + + case ARG_NO_BLOCK: + arg_no_block = true; + break; + + case ARG_WAIT: + arg_wait = true; + break; + + case ARG_WORKING_DIRECTORY: + r = parse_path_argument_and_warn(optarg, true, &arg_working_directory); + if (r < 0) + return r; + + break; + + case 'd': { + _cleanup_free_ char *p = NULL; + + r = safe_getcwd(&p); + if (r < 0) + return log_error_errno(r, "Failed to get current working directory: %m"); + + if (empty_or_root(p)) + arg_working_directory = mfree(arg_working_directory); + else + free_and_replace(arg_working_directory, p); + break; + } + + case 'G': + arg_aggressive_gc = true; + break; + + case 'S': + arg_shell = true; + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + + with_trigger = !!arg_path_property || !!arg_socket_property || with_timer; + + /* currently, only single trigger (path, socket, timer) unit can be created simultaneously */ + if ((int) !!arg_path_property + (int) !!arg_socket_property + (int) with_timer > 1) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Only single trigger (path, socket, timer) unit can be created."); + + if (arg_shell) { + /* If --shell is imply --pty --pipe --same-dir --service-type=exec --wait --collect, unless otherwise + * specified. */ + + if (!arg_scope) { + if (arg_stdio == ARG_STDIO_NONE) + arg_stdio = ARG_STDIO_AUTO; + + if (!arg_working_directory) { + r = safe_getcwd(&arg_working_directory); + if (r < 0) + return log_error_errno(r, "Failed to get current working directory: %m"); + } + + if (!arg_service_type) { + arg_service_type = strdup("exec"); + if (!arg_service_type) + return log_oom(); + } + + arg_wait = true; + } + + arg_aggressive_gc = true; + } + + if (arg_stdio == ARG_STDIO_AUTO) { + /* If we both --pty and --pipe are specified we'll automatically pick --pty if we are connected fully + * to a TTY and pick direct fd passing otherwise. This way, we automatically adapt to usage in a shell + * pipeline, but we are neatly interactive with tty-level isolation otherwise. */ + arg_stdio = isatty(STDIN_FILENO) && isatty(STDOUT_FILENO) && isatty(STDERR_FILENO) ? + ARG_STDIO_PTY : + ARG_STDIO_DIRECT; + } + + if (argc > optind) { + char **l; + + if (arg_shell) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "If --shell is used, no command line is expected."); + + l = strv_copy(argv + optind); + if (!l) + return log_oom(); + + strv_free_and_replace(arg_cmdline, l); + + } else if (arg_shell) { + _cleanup_free_ char *s = NULL; + char **l; + + r = get_shell(&s); + if (r < 0) + return log_error_errno(r, "Failed to determine shell: %m"); + + l = strv_new(s); + if (!l) + return log_oom(); + + strv_free_and_replace(arg_cmdline, l); + + } else if (!arg_unit || !with_trigger) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Command line to execute required."); + + if (arg_user && arg_transport != BUS_TRANSPORT_LOCAL) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Execution in user context is not supported on non-local systems."); + + if (arg_scope && arg_transport != BUS_TRANSPORT_LOCAL) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Scope execution is not supported on non-local systems."); + + if (arg_scope && (arg_remain_after_exit || arg_service_type)) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "--remain-after-exit and --service-type= are not supported in --scope mode."); + + if (arg_stdio != ARG_STDIO_NONE && (with_trigger || arg_scope)) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "--pty/--pipe is not compatible in timer or --scope mode."); + + if (arg_stdio != ARG_STDIO_NONE && arg_transport == BUS_TRANSPORT_REMOTE) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "--pty/--pipe is only supported when connecting to the local system or containers."); + + if (arg_stdio != ARG_STDIO_NONE && arg_no_block) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "--pty/--pipe is not compatible with --no-block."); + + if (arg_scope && with_trigger) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Path, socket or timer options are not supported in --scope mode."); + + if (arg_timer_property && !with_timer) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "--timer-property= has no effect without any other timer options."); + + if (arg_wait) { + if (arg_no_block) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "--wait may not be combined with --no-block."); + + if (with_trigger) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "--wait may not be combined with path, socket or timer operations."); + + if (arg_scope) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "--wait may not be combined with --scope."); + } + + return 1; +} + +static int transient_unit_set_properties(sd_bus_message *m, UnitType t, char **properties) { + int r; + + r = sd_bus_message_append(m, "(sv)", "Description", "s", arg_description); + if (r < 0) + return bus_log_create_error(r); + + if (arg_aggressive_gc) { + r = sd_bus_message_append(m, "(sv)", "CollectMode", "s", "inactive-or-failed"); + if (r < 0) + return bus_log_create_error(r); + } + + r = bus_append_unit_property_assignment_many(m, t, properties); + if (r < 0) + return r; + + return 0; +} + +static int transient_cgroup_set_properties(sd_bus_message *m) { + int r; + assert(m); + + if (!isempty(arg_slice)) { + _cleanup_free_ char *slice = NULL; + + r = unit_name_mangle_with_suffix(arg_slice, arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN, ".slice", &slice); + if (r < 0) + return log_error_errno(r, "Failed to mangle name '%s': %m", arg_slice); + + r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice); + if (r < 0) + return bus_log_create_error(r); + } + + return 0; +} + +static int transient_kill_set_properties(sd_bus_message *m) { + int r; + + assert(m); + + if (arg_send_sighup) { + r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", arg_send_sighup); + if (r < 0) + return bus_log_create_error(r); + } + + return 0; +} + +static int transient_service_set_properties(sd_bus_message *m, const char *pty_path) { + bool send_term = false; + int r; + + assert(m); + + r = transient_unit_set_properties(m, UNIT_SERVICE, arg_property); + if (r < 0) + return r; + + r = transient_kill_set_properties(m); + if (r < 0) + return r; + + r = transient_cgroup_set_properties(m); + if (r < 0) + return r; + + if (arg_wait || arg_stdio != ARG_STDIO_NONE) { + r = sd_bus_message_append(m, "(sv)", "AddRef", "b", 1); + if (r < 0) + return bus_log_create_error(r); + } + + if (arg_remain_after_exit) { + r = sd_bus_message_append(m, "(sv)", "RemainAfterExit", "b", arg_remain_after_exit); + if (r < 0) + return bus_log_create_error(r); + } + + if (arg_service_type) { + r = sd_bus_message_append(m, "(sv)", "Type", "s", arg_service_type); + if (r < 0) + return bus_log_create_error(r); + } + + if (arg_exec_user) { + r = sd_bus_message_append(m, "(sv)", "User", "s", arg_exec_user); + if (r < 0) + return bus_log_create_error(r); + } + + if (arg_exec_group) { + r = sd_bus_message_append(m, "(sv)", "Group", "s", arg_exec_group); + if (r < 0) + return bus_log_create_error(r); + } + + if (arg_nice_set) { + r = sd_bus_message_append(m, "(sv)", "Nice", "i", arg_nice); + if (r < 0) + return bus_log_create_error(r); + } + + if (arg_working_directory) { + r = sd_bus_message_append(m, "(sv)", "WorkingDirectory", "s", arg_working_directory); + if (r < 0) + return bus_log_create_error(r); + } + + if (pty_path) { + r = sd_bus_message_append(m, + "(sv)(sv)(sv)(sv)", + "StandardInput", "s", "tty", + "StandardOutput", "s", "tty", + "StandardError", "s", "tty", + "TTYPath", "s", pty_path); + if (r < 0) + return bus_log_create_error(r); + + send_term = true; + + } else if (arg_stdio == ARG_STDIO_DIRECT) { + r = sd_bus_message_append(m, + "(sv)(sv)(sv)", + "StandardInputFileDescriptor", "h", STDIN_FILENO, + "StandardOutputFileDescriptor", "h", STDOUT_FILENO, + "StandardErrorFileDescriptor", "h", STDERR_FILENO); + if (r < 0) + return bus_log_create_error(r); + + send_term = isatty(STDIN_FILENO) || isatty(STDOUT_FILENO) || isatty(STDERR_FILENO); + } + + if (send_term) { + const char *e; + + e = getenv("TERM"); + if (e) { + char *n; + + n = strjoina("TERM=", e); + r = sd_bus_message_append(m, + "(sv)", + "Environment", "as", 1, n); + if (r < 0) + return bus_log_create_error(r); + } + } + + if (!strv_isempty(arg_environment)) { + r = sd_bus_message_open_container(m, 'r', "sv"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append(m, "s", "Environment"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_open_container(m, 'v', "as"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, arg_environment); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_close_container(m); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_close_container(m); + if (r < 0) + return bus_log_create_error(r); + } + + /* Exec container */ + if (!strv_isempty(arg_cmdline)) { + r = sd_bus_message_open_container(m, 'r', "sv"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append(m, "s", "ExecStart"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_open_container(m, 'v', "a(sasb)"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_open_container(m, 'a', "(sasb)"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_open_container(m, 'r', "sasb"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append(m, "s", arg_cmdline[0]); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, arg_cmdline); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append(m, "b", false); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_close_container(m); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_close_container(m); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_close_container(m); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_close_container(m); + if (r < 0) + return bus_log_create_error(r); + } + + return 0; +} + +static int transient_scope_set_properties(sd_bus_message *m) { + int r; + + assert(m); + + r = transient_unit_set_properties(m, UNIT_SCOPE, arg_property); + if (r < 0) + return r; + + r = transient_kill_set_properties(m); + if (r < 0) + return r; + + r = transient_cgroup_set_properties(m); + if (r < 0) + return r; + + r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, (uint32_t) getpid_cached()); + if (r < 0) + return bus_log_create_error(r); + + return 0; +} + +static int transient_timer_set_properties(sd_bus_message *m) { + int r; + + assert(m); + + r = transient_unit_set_properties(m, UNIT_TIMER, arg_timer_property); + if (r < 0) + return r; + + /* Automatically clean up our transient timers */ + r = sd_bus_message_append(m, "(sv)", "RemainAfterElapse", "b", false); + if (r < 0) + return bus_log_create_error(r); + + return 0; +} + +static int make_unit_name(sd_bus *bus, UnitType t, char **ret) { + const char *unique, *id; + char *p; + int r; + + assert(bus); + assert(t >= 0); + assert(t < _UNIT_TYPE_MAX); + + r = sd_bus_get_unique_name(bus, &unique); + if (r < 0) { + sd_id128_t rnd; + + /* We couldn't get the unique name, which is a pretty + * common case if we are connected to systemd + * directly. In that case, just pick a random uuid as + * name */ + + r = sd_id128_randomize(&rnd); + if (r < 0) + return log_error_errno(r, "Failed to generate random run unit name: %m"); + + if (asprintf(ret, "run-r" SD_ID128_FORMAT_STR ".%s", SD_ID128_FORMAT_VAL(rnd), unit_type_to_string(t)) < 0) + return log_oom(); + + return 0; + } + + /* We managed to get the unique name, then let's use that to + * name our transient units. */ + + id = startswith(unique, ":1."); + if (!id) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), + "Unique name %s has unexpected format.", + unique); + + p = strjoin("run-u", id, ".", unit_type_to_string(t)); + if (!p) + return log_oom(); + + *ret = p; + return 0; +} + +typedef struct RunContext { + sd_bus *bus; + sd_event *event; + PTYForward *forward; + sd_bus_slot *match; + + /* The exit data of the unit */ + char *active_state; + uint64_t inactive_exit_usec; + uint64_t inactive_enter_usec; + char *result; + uint64_t cpu_usage_nsec; + uint64_t ip_ingress_bytes; + uint64_t ip_egress_bytes; + uint32_t exit_code; + uint32_t exit_status; +} RunContext; + +static void run_context_free(RunContext *c) { + assert(c); + + c->forward = pty_forward_free(c->forward); + c->match = sd_bus_slot_unref(c->match); + c->bus = sd_bus_unref(c->bus); + c->event = sd_event_unref(c->event); + + free(c->active_state); + free(c->result); +} + +static void run_context_check_done(RunContext *c) { + bool done; + + assert(c); + + if (c->match) + done = STRPTR_IN_SET(c->active_state, "inactive", "failed"); + else + done = true; + + if (c->forward && done) /* If the service is gone, it's time to drain the output */ + done = pty_forward_drain(c->forward); + + if (done) + sd_event_exit(c->event, EXIT_SUCCESS); +} + +static int run_context_update(RunContext *c, const char *path) { + + static const struct bus_properties_map map[] = { + { "ActiveState", "s", NULL, offsetof(RunContext, active_state) }, + { "InactiveExitTimestampMonotonic", "t", NULL, offsetof(RunContext, inactive_exit_usec) }, + { "InactiveEnterTimestampMonotonic", "t", NULL, offsetof(RunContext, inactive_enter_usec) }, + { "Result", "s", NULL, offsetof(RunContext, result) }, + { "ExecMainCode", "i", NULL, offsetof(RunContext, exit_code) }, + { "ExecMainStatus", "i", NULL, offsetof(RunContext, exit_status) }, + { "CPUUsageNSec", "t", NULL, offsetof(RunContext, cpu_usage_nsec) }, + { "IPIngressBytes", "t", NULL, offsetof(RunContext, ip_ingress_bytes) }, + { "IPEgressBytes", "t", NULL, offsetof(RunContext, ip_egress_bytes) }, + {} + }; + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + int r; + + r = bus_map_all_properties(c->bus, + "org.freedesktop.systemd1", + path, + map, + BUS_MAP_STRDUP, + &error, + NULL, + c); + if (r < 0) { + sd_event_exit(c->event, EXIT_FAILURE); + return log_error_errno(r, "Failed to query unit state: %s", bus_error_message(&error, r)); + } + + run_context_check_done(c); + return 0; +} + +static int on_properties_changed(sd_bus_message *m, void *userdata, sd_bus_error *error) { + RunContext *c = userdata; + + assert(m); + assert(c); + + return run_context_update(c, sd_bus_message_get_path(m)); +} + +static int pty_forward_handler(PTYForward *f, int rcode, void *userdata) { + RunContext *c = userdata; + + assert(f); + + if (rcode < 0) { + sd_event_exit(c->event, EXIT_FAILURE); + return log_error_errno(rcode, "Error on PTY forwarding logic: %m"); + } + + run_context_check_done(c); + return 0; +} + +static int start_transient_service( + sd_bus *bus, + int *retval) { + + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL; + _cleanup_free_ char *service = NULL, *pty_path = NULL; + _cleanup_close_ int master = -1; + int r; + + assert(bus); + assert(retval); + + if (arg_stdio == ARG_STDIO_PTY) { + + if (arg_transport == BUS_TRANSPORT_LOCAL) { + master = posix_openpt(O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK); + if (master < 0) + return log_error_errno(errno, "Failed to acquire pseudo tty: %m"); + + r = ptsname_malloc(master, &pty_path); + if (r < 0) + return log_error_errno(r, "Failed to determine tty name: %m"); + + if (unlockpt(master) < 0) + return log_error_errno(errno, "Failed to unlock tty: %m"); + + } else if (arg_transport == BUS_TRANSPORT_MACHINE) { + _cleanup_(sd_bus_unrefp) sd_bus *system_bus = NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *pty_reply = NULL; + const char *s; + + r = sd_bus_default_system(&system_bus); + if (r < 0) + return log_error_errno(r, "Failed to connect to system bus: %m"); + + r = sd_bus_call_method(system_bus, + "org.freedesktop.machine1", + "/org/freedesktop/machine1", + "org.freedesktop.machine1.Manager", + "OpenMachinePTY", + &error, + &pty_reply, + "s", arg_host); + if (r < 0) + return log_error_errno(r, "Failed to get machine PTY: %s", bus_error_message(&error, -r)); + + r = sd_bus_message_read(pty_reply, "hs", &master, &s); + if (r < 0) + return bus_log_parse_error(r); + + master = fcntl(master, F_DUPFD_CLOEXEC, 3); + if (master < 0) + return log_error_errno(errno, "Failed to duplicate master fd: %m"); + + pty_path = strdup(s); + if (!pty_path) + return log_oom(); + } else + assert_not_reached("Can't allocate tty via ssh"); + } + + 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_unit) { + r = unit_name_mangle_with_suffix(arg_unit, arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN, ".service", &service); + if (r < 0) + return log_error_errno(r, "Failed to mangle unit name: %m"); + } else { + r = make_unit_name(bus, UNIT_SERVICE, &service); + if (r < 0) + return r; + } + + r = sd_bus_message_new_method_call( + bus, + &m, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "StartTransientUnit"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password); + if (r < 0) + return bus_log_create_error(r); + + /* Name and mode */ + r = sd_bus_message_append(m, "ss", service, "fail"); + if (r < 0) + return bus_log_create_error(r); + + /* Properties */ + r = sd_bus_message_open_container(m, 'a', "(sv)"); + if (r < 0) + return bus_log_create_error(r); + + r = transient_service_set_properties(m, pty_path); + if (r < 0) + return r; + + r = sd_bus_message_close_container(m); + if (r < 0) + return bus_log_create_error(r); + + /* Auxiliary units */ + r = sd_bus_message_append(m, "a(sa(sv))", 0); + if (r < 0) + return bus_log_create_error(r); + + polkit_agent_open_if_enabled(arg_transport, arg_ask_password); + + r = sd_bus_call(bus, m, 0, &error, &reply); + if (r < 0) + return log_error_errno(r, "Failed to start transient service unit: %s", bus_error_message(&error, r)); + + if (w) { + const char *object; + + r = sd_bus_message_read(reply, "o", &object); + if (r < 0) + return bus_log_parse_error(r); + + r = bus_wait_for_jobs_one(w, object, arg_quiet); + if (r < 0) + return r; + } + + if (!arg_quiet) + log_info("Running as unit: %s", service); + + if (arg_wait || arg_stdio != ARG_STDIO_NONE) { + _cleanup_(run_context_free) RunContext c = { + .cpu_usage_nsec = NSEC_INFINITY, + .ip_ingress_bytes = UINT64_MAX, + .ip_egress_bytes = UINT64_MAX, + .inactive_exit_usec = USEC_INFINITY, + .inactive_enter_usec = USEC_INFINITY, + }; + _cleanup_free_ char *path = NULL; + + c.bus = sd_bus_ref(bus); + + r = sd_event_default(&c.event); + if (r < 0) + return log_error_errno(r, "Failed to get event loop: %m"); + + if (master >= 0) { + assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGWINCH, SIGTERM, SIGINT, -1) >= 0); + (void) sd_event_add_signal(c.event, NULL, SIGINT, NULL, NULL); + (void) sd_event_add_signal(c.event, NULL, SIGTERM, NULL, NULL); + + if (!arg_quiet) + log_info("Press ^] three times within 1s to disconnect TTY."); + + r = pty_forward_new(c.event, master, PTY_FORWARD_IGNORE_INITIAL_VHANGUP, &c.forward); + if (r < 0) + return log_error_errno(r, "Failed to create PTY forwarder: %m"); + + pty_forward_set_handler(c.forward, pty_forward_handler, &c); + + /* Make sure to process any TTY events before we process bus events */ + (void) pty_forward_set_priority(c.forward, SD_EVENT_PRIORITY_IMPORTANT); + } + + path = unit_dbus_path_from_name(service); + if (!path) + return log_oom(); + + r = sd_bus_match_signal_async( + bus, + &c.match, + "org.freedesktop.systemd1", + path, + "org.freedesktop.DBus.Properties", + "PropertiesChanged", + on_properties_changed, NULL, &c); + if (r < 0) + return log_error_errno(r, "Failed to request properties changed signal match: %m"); + + r = sd_bus_attach_event(bus, c.event, SD_EVENT_PRIORITY_NORMAL); + if (r < 0) + return log_error_errno(r, "Failed to attach bus to event loop: %m"); + + r = run_context_update(&c, path); + if (r < 0) + return r; + + r = sd_event_loop(c.event); + if (r < 0) + return log_error_errno(r, "Failed to run event loop: %m"); + + if (c.forward) { + char last_char = 0; + + r = pty_forward_get_last_char(c.forward, &last_char); + if (r >= 0 && !arg_quiet && last_char != '\n') + fputc('\n', stdout); + } + + if (arg_wait && !arg_quiet) { + + /* Explicitly destroy the PTY forwarder, so that the PTY device is usable again, in its + * original settings (i.e. proper line breaks), so that we can show the summary in a pretty + * way. */ + c.forward = pty_forward_free(c.forward); + + if (!isempty(c.result)) + log_info("Finished with result: %s", strna(c.result)); + + if (c.exit_code == CLD_EXITED) + log_info("Main processes terminated with: code=%s/status=%i", sigchld_code_to_string(c.exit_code), c.exit_status); + else if (c.exit_code > 0) + log_info("Main processes terminated with: code=%s/status=%s", sigchld_code_to_string(c.exit_code), signal_to_string(c.exit_status)); + + if (c.inactive_enter_usec > 0 && c.inactive_enter_usec != USEC_INFINITY && + c.inactive_exit_usec > 0 && c.inactive_exit_usec != USEC_INFINITY && + c.inactive_enter_usec > c.inactive_exit_usec) { + char ts[FORMAT_TIMESPAN_MAX]; + log_info("Service runtime: %s", format_timespan(ts, sizeof(ts), c.inactive_enter_usec - c.inactive_exit_usec, USEC_PER_MSEC)); + } + + if (c.cpu_usage_nsec != NSEC_INFINITY) { + char ts[FORMAT_TIMESPAN_MAX]; + log_info("CPU time consumed: %s", format_timespan(ts, sizeof(ts), (c.cpu_usage_nsec + NSEC_PER_USEC - 1) / NSEC_PER_USEC, USEC_PER_MSEC)); + } + + if (c.ip_ingress_bytes != UINT64_MAX) { + char bytes[FORMAT_BYTES_MAX]; + log_info("IP traffic received: %s", format_bytes(bytes, sizeof(bytes), c.ip_ingress_bytes)); + } + if (c.ip_egress_bytes != UINT64_MAX) { + char bytes[FORMAT_BYTES_MAX]; + log_info("IP traffic sent: %s", format_bytes(bytes, sizeof(bytes), c.ip_egress_bytes)); + } + } + + /* Try to propagate the service's return value */ + if (c.result && STR_IN_SET(c.result, "success", "exit-code") && c.exit_code == CLD_EXITED) + *retval = c.exit_status; + else + *retval = EXIT_FAILURE; + } + + return 0; +} + +static int acquire_invocation_id(sd_bus *bus, sd_id128_t *ret) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + const void *p; + size_t l; + int r; + + assert(bus); + assert(ret); + + r = sd_bus_get_property(bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1/unit/self", + "org.freedesktop.systemd1.Unit", + "InvocationID", + &error, + &reply, + "ay"); + if (r < 0) + return log_error_errno(r, "Failed to request invocation ID for scope: %s", bus_error_message(&error, r)); + + r = sd_bus_message_read_array(reply, 'y', &p, &l); + if (r < 0) + return bus_log_parse_error(r); + + if (l != sizeof(sd_id128_t)) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid UUID size, %zu != %zu.", l, sizeof(sd_id128_t)); + + memcpy(ret, p, l); + return 0; +} + +static int start_transient_scope(sd_bus *bus) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL; + _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL; + _cleanup_strv_free_ char **env = NULL, **user_env = NULL; + _cleanup_free_ char *scope = NULL; + const char *object = NULL; + sd_id128_t invocation_id; + int r; + + assert(bus); + assert(!strv_isempty(arg_cmdline)); + + r = bus_wait_for_jobs_new(bus, &w); + if (r < 0) + return log_oom(); + + if (arg_unit) { + r = unit_name_mangle_with_suffix(arg_unit, arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN, ".scope", &scope); + if (r < 0) + return log_error_errno(r, "Failed to mangle scope name: %m"); + } else { + r = make_unit_name(bus, UNIT_SCOPE, &scope); + if (r < 0) + return r; + } + + r = sd_bus_message_new_method_call( + bus, + &m, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "StartTransientUnit"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password); + if (r < 0) + return bus_log_create_error(r); + + /* Name and Mode */ + r = sd_bus_message_append(m, "ss", scope, "fail"); + if (r < 0) + return bus_log_create_error(r); + + /* Properties */ + r = sd_bus_message_open_container(m, 'a', "(sv)"); + if (r < 0) + return bus_log_create_error(r); + + r = transient_scope_set_properties(m); + if (r < 0) + return r; + + r = sd_bus_message_close_container(m); + if (r < 0) + return bus_log_create_error(r); + + /* Auxiliary units */ + r = sd_bus_message_append(m, "a(sa(sv))", 0); + if (r < 0) + return bus_log_create_error(r); + + polkit_agent_open_if_enabled(arg_transport, arg_ask_password); + + r = sd_bus_call(bus, m, 0, &error, &reply); + if (r < 0) + return log_error_errno(r, "Failed to start transient scope unit: %s", bus_error_message(&error, -r)); + + r = sd_bus_message_read(reply, "o", &object); + if (r < 0) + return bus_log_parse_error(r); + + r = bus_wait_for_jobs_one(w, object, arg_quiet); + if (r < 0) + return r; + + r = acquire_invocation_id(bus, &invocation_id); + if (r < 0) + return r; + + r = strv_extendf(&user_env, "INVOCATION_ID=" SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(invocation_id)); + if (r < 0) + return log_oom(); + + if (arg_nice_set) { + if (setpriority(PRIO_PROCESS, 0, arg_nice) < 0) + return log_error_errno(errno, "Failed to set nice level: %m"); + } + + if (arg_exec_group) { + gid_t gid; + + r = get_group_creds(&arg_exec_group, &gid, 0); + if (r < 0) + return log_error_errno(r, "Failed to resolve group %s: %m", arg_exec_group); + + if (setresgid(gid, gid, gid) < 0) + return log_error_errno(errno, "Failed to change GID to " GID_FMT ": %m", gid); + } + + if (arg_exec_user) { + const char *home, *shell; + uid_t uid; + gid_t gid; + + r = get_user_creds(&arg_exec_user, &uid, &gid, &home, &shell, USER_CREDS_CLEAN|USER_CREDS_PREFER_NSS); + if (r < 0) + return log_error_errno(r, "Failed to resolve user %s: %m", arg_exec_user); + + if (home) { + r = strv_extendf(&user_env, "HOME=%s", home); + if (r < 0) + return log_oom(); + } + + if (shell) { + r = strv_extendf(&user_env, "SHELL=%s", shell); + if (r < 0) + return log_oom(); + } + + r = strv_extendf(&user_env, "USER=%s", arg_exec_user); + if (r < 0) + return log_oom(); + + r = strv_extendf(&user_env, "LOGNAME=%s", arg_exec_user); + if (r < 0) + return log_oom(); + + if (!arg_exec_group) { + if (setresgid(gid, gid, gid) < 0) + return log_error_errno(errno, "Failed to change GID to " GID_FMT ": %m", gid); + } + + if (setresuid(uid, uid, uid) < 0) + return log_error_errno(errno, "Failed to change UID to " UID_FMT ": %m", uid); + } + + env = strv_env_merge(3, environ, user_env, arg_environment); + if (!env) + return log_oom(); + + if (!arg_quiet) + log_info("Running scope as unit: %s", scope); + + execvpe(arg_cmdline[0], arg_cmdline, env); + + return log_error_errno(errno, "Failed to execute: %m"); +} + +static int start_transient_trigger( + sd_bus *bus, + const char *suffix) { + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL; + _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL; + _cleanup_free_ char *trigger = NULL, *service = NULL; + const char *object = NULL; + int r; + + assert(bus); + + r = bus_wait_for_jobs_new(bus, &w); + if (r < 0) + return log_oom(); + + if (arg_unit) { + switch (unit_name_to_type(arg_unit)) { + + case UNIT_SERVICE: + service = strdup(arg_unit); + if (!service) + return log_oom(); + + r = unit_name_change_suffix(service, suffix, &trigger); + if (r < 0) + return log_error_errno(r, "Failed to change unit suffix: %m"); + break; + + case UNIT_TIMER: + trigger = strdup(arg_unit); + if (!trigger) + return log_oom(); + + r = unit_name_change_suffix(trigger, ".service", &service); + if (r < 0) + return log_error_errno(r, "Failed to change unit suffix: %m"); + break; + + default: + r = unit_name_mangle_with_suffix(arg_unit, arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN, ".service", &service); + if (r < 0) + return log_error_errno(r, "Failed to mangle unit name: %m"); + + r = unit_name_mangle_with_suffix(arg_unit, arg_quiet ? 0 : UNIT_NAME_MANGLE_WARN, suffix, &trigger); + if (r < 0) + return log_error_errno(r, "Failed to mangle unit name: %m"); + + break; + } + } else { + r = make_unit_name(bus, UNIT_SERVICE, &service); + if (r < 0) + return r; + + r = unit_name_change_suffix(service, suffix, &trigger); + if (r < 0) + return log_error_errno(r, "Failed to change unit suffix: %m"); + } + + r = sd_bus_message_new_method_call( + bus, + &m, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "StartTransientUnit"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password); + if (r < 0) + return bus_log_create_error(r); + + /* Name and Mode */ + r = sd_bus_message_append(m, "ss", trigger, "fail"); + if (r < 0) + return bus_log_create_error(r); + + /* Properties */ + r = sd_bus_message_open_container(m, 'a', "(sv)"); + if (r < 0) + return bus_log_create_error(r); + + if (streq(suffix, ".path")) + r = transient_unit_set_properties(m, UNIT_PATH, arg_path_property); + else if (streq(suffix, ".socket")) + r = transient_unit_set_properties(m, UNIT_SOCKET, arg_socket_property); + else if (streq(suffix, ".timer")) + r = transient_timer_set_properties(m); + else + assert_not_reached("Invalid suffix"); + if (r < 0) + return r; + + r = sd_bus_message_close_container(m); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_open_container(m, 'a', "(sa(sv))"); + if (r < 0) + return bus_log_create_error(r); + + if (!strv_isempty(arg_cmdline)) { + r = sd_bus_message_open_container(m, 'r', "sa(sv)"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append(m, "s", service); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_open_container(m, 'a', "(sv)"); + if (r < 0) + return bus_log_create_error(r); + + r = transient_service_set_properties(m, NULL); + if (r < 0) + return r; + + r = sd_bus_message_close_container(m); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_close_container(m); + if (r < 0) + return bus_log_create_error(r); + } + + r = sd_bus_message_close_container(m); + if (r < 0) + return bus_log_create_error(r); + + polkit_agent_open_if_enabled(arg_transport, arg_ask_password); + + r = sd_bus_call(bus, m, 0, &error, &reply); + if (r < 0) + return log_error_errno(r, "Failed to start transient %s unit: %s", suffix + 1, bus_error_message(&error, -r)); + + r = sd_bus_message_read(reply, "o", &object); + if (r < 0) + return bus_log_parse_error(r); + + r = bus_wait_for_jobs_one(w, object, arg_quiet); + if (r < 0) + return r; + + if (!arg_quiet) { + log_info("Running %s as unit: %s", suffix + 1, trigger); + if (!strv_isempty(arg_cmdline)) + log_info("Will run service as unit: %s", service); + } + + return 0; +} + +static int run(int argc, char* argv[]) { + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; + _cleanup_free_ char *description = NULL; + int r, retval = EXIT_SUCCESS; + + log_parse_environment(); + log_open(); + + r = parse_argv(argc, argv); + if (r <= 0) + return r; + + if (!strv_isempty(arg_cmdline) && arg_transport == BUS_TRANSPORT_LOCAL) { + _cleanup_free_ char *command = NULL; + + /* Patch in an absolute path */ + + r = find_binary(arg_cmdline[0], &command); + if (r < 0) + return log_error_errno(r, "Failed to find executable %s: %m", arg_cmdline[0]); + + free_and_replace(arg_cmdline[0], command); + } + + if (!arg_description) { + description = strv_join(arg_cmdline, " "); + if (!description) + return log_oom(); + + if (arg_unit && isempty(description)) { + r = free_and_strdup(&description, arg_unit); + if (r < 0) + return log_oom(); + } + + arg_description = description; + } + + /* If --wait is used connect via the bus, unconditionally, as ref/unref is not supported via the limited direct + * connection */ + if (arg_wait || arg_stdio != ARG_STDIO_NONE) + r = bus_connect_transport(arg_transport, arg_host, arg_user, &bus); + else + r = bus_connect_transport_systemd(arg_transport, arg_host, arg_user, &bus); + if (r < 0) + return log_error_errno(r, "Failed to create bus connection: %m"); + + if (arg_scope) + r = start_transient_scope(bus); + else if (arg_path_property) + r = start_transient_trigger(bus, ".path"); + else if (arg_socket_property) + r = start_transient_trigger(bus, ".socket"); + else if (with_timer) + r = start_transient_trigger(bus, ".timer"); + else + r = start_transient_service(bus, &retval); + if (r < 0) + return r; + + return retval; +} + +DEFINE_MAIN_FUNCTION_WITH_POSITIVE_FAILURE(run); |