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-rw-r--r--src/run/run.c1790
1 files changed, 1790 insertions, 0 deletions
diff --git a/src/run/run.c b/src/run/run.c
new file mode 100644
index 0000000..8e4b0ec
--- /dev/null
+++ b/src/run/run.c
@@ -0,0 +1,1790 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <getopt.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "sd-bus.h"
+#include "sd-event.h"
+
+#include "alloc-util.h"
+#include "bus-error.h"
+#include "bus-locator.h"
+#include "bus-map-properties.h"
+#include "bus-unit-util.h"
+#include "bus-wait-for-jobs.h"
+#include "calendarspec.h"
+#include "env-util.h"
+#include "exit-status.h"
+#include "fd-util.h"
+#include "format-util.h"
+#include "main-func.h"
+#include "parse-argument.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_slice_inherit = false;
+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 arg_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 [ARGUMENTS...]\n"
+ "\n%sRun the specified command in a transient scope or service.%s\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"
+ " -u --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"
+ " --slice-inherit Inherit the 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 variable\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"
+ " --on-timezone-change Run when the timezone changes\n"
+ " --on-clock-change Run when the realtime clock jumps\n"
+ " --timer-property=NAME=VALUE Set timer unit property\n"
+ "\nSee the %s for details.\n",
+ program_invocation_short_name,
+ ansi_highlight(),
+ ansi_normal(),
+ 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_DESCRIPTION,
+ ARG_SLICE,
+ ARG_SLICE_INHERIT,
+ 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_ON_TIMEZONE_CHANGE,
+ ARG_ON_CLOCK_CHANGE,
+ 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, 'u' },
+ { "description", required_argument, NULL, ARG_DESCRIPTION },
+ { "slice", required_argument, NULL, ARG_SLICE },
+ { "slice-inherit", no_argument, NULL, ARG_SLICE_INHERIT },
+ { "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 },
+ { "on-timezone-change",no_argument, NULL, ARG_ON_TIMEZONE_CHANGE},
+ { "on-clock-change", no_argument, NULL, ARG_ON_CLOCK_CHANGE },
+ { "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);
+
+ /* Resetting to 0 forces the invocation of an internal initialization routine of getopt_long()
+ * that checks for GNU extensions in optstring ('-' or '+' at the beginning). */
+ optind = 0;
+ while ((c = getopt_long(argc, argv, "+hrH:M:E:p:tPqGdSu:", 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 'u':
+ arg_unit = optarg;
+ break;
+
+ case ARG_DESCRIPTION:
+ arg_description = optarg;
+ break;
+
+ case ARG_SLICE:
+ arg_slice = optarg;
+ break;
+
+ case ARG_SLICE_INHERIT:
+ arg_slice_inherit = true;
+ 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':
+ r = strv_env_replace_strdup_passthrough(&arg_environment, optarg);
+ if (r < 0)
+ return log_error_errno(r, "Cannot assign environment variable %s: %m", optarg);
+
+ 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;
+
+ arg_with_timer = true;
+ break;
+
+ case ARG_ON_BOOT:
+ r = add_timer_property("OnBootSec", optarg);
+ if (r < 0)
+ return r;
+
+ arg_with_timer = true;
+ break;
+
+ case ARG_ON_STARTUP:
+ r = add_timer_property("OnStartupSec", optarg);
+ if (r < 0)
+ return r;
+
+ arg_with_timer = true;
+ break;
+
+ case ARG_ON_UNIT_ACTIVE:
+ r = add_timer_property("OnUnitActiveSec", optarg);
+ if (r < 0)
+ return r;
+
+ arg_with_timer = true;
+ break;
+
+ case ARG_ON_UNIT_INACTIVE:
+ r = add_timer_property("OnUnitInactiveSec", optarg);
+ if (r < 0)
+ return r;
+
+ arg_with_timer = true;
+ break;
+
+ case ARG_ON_CALENDAR: {
+ _cleanup_(calendar_spec_freep) CalendarSpec *cs = NULL;
+
+ r = calendar_spec_from_string(optarg, &cs);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse calendar event specification: %m");
+
+ /* Let's make sure the given calendar event is not in the past */
+ r = calendar_spec_next_usec(cs, now(CLOCK_REALTIME), NULL);
+ if (r == -ENOENT)
+ /* The calendar event is in the past — let's warn about this, but install it
+ * anyway as is. The service manager will trigger the service right away.
+ * Moreover, the server side might have a different clock or timezone than we
+ * do, hence it should decide when or whether to run something. */
+ log_warning("Specified calendar expression is in the past, proceeding anyway.");
+ else if (r < 0)
+ return log_error_errno(r, "Failed to calculate next time calendar expression elapses: %m");
+
+ r = add_timer_property("OnCalendar", optarg);
+ if (r < 0)
+ return r;
+
+ arg_with_timer = true;
+ break;
+ }
+
+ case ARG_ON_TIMEZONE_CHANGE:
+ r = add_timer_property("OnTimezoneChange", "yes");
+ if (r < 0)
+ return r;
+
+ arg_with_timer = true;
+ break;
+
+ case ARG_ON_CLOCK_CHANGE:
+ r = add_timer_property("OnClockChange", "yes");
+ if (r < 0)
+ return r;
+
+ arg_with_timer = true;
+ break;
+
+ case ARG_TIMER_PROPERTY:
+
+ if (strv_extend(&arg_timer_property, optarg) < 0)
+ return log_oom();
+
+ arg_with_timer = arg_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(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();
+ }
+
+ /* If we are talking to the per-user instance PolicyKit isn't going to help */
+ if (arg_user)
+ arg_ask_password = false;
+
+ with_trigger = !!arg_path_property || !!arg_socket_property || arg_with_timer;
+
+ /* currently, only single trigger (path, socket, timer) unit can be created simultaneously */
+ if ((int) !!arg_path_property + (int) !!arg_socket_property + (int) arg_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_REMOTE)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Execution in user context is not supported on remote systems.");
+
+ if (arg_scope && arg_transport == BUS_TRANSPORT_REMOTE)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Scope execution is not supported on remote 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 && !arg_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;
+
+ assert(m);
+
+ 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 = sd_bus_is_bus_client(sd_bus_message_get_bus(m));
+ if (r < 0)
+ return log_error_errno(r, "Can't determine if bus connection is direct or to broker: %m");
+ if (r > 0) {
+ /* Pin the object as least as long as we are around. Note that AddRef (currently) only works
+ * if we talk via the bus though. */
+ r = sd_bus_message_append(m, "(sv)", "AddRef", "b", 1);
+ if (r < 0)
+ return bus_log_create_error(r);
+ }
+
+ return bus_append_unit_property_assignment_many(m, t, properties);
+}
+
+static int transient_cgroup_set_properties(sd_bus_message *m) {
+ _cleanup_free_ char *name = NULL;
+ _cleanup_free_ char *slice = NULL;
+ int r;
+ assert(m);
+
+ if (arg_slice_inherit) {
+ char *end;
+
+ if (arg_user)
+ r = cg_pid_get_user_slice(0, &name);
+ else
+ r = cg_pid_get_slice(0, &name);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get PID slice: %m");
+
+ end = endswith(name, ".slice");
+ if (!end)
+ return -ENXIO;
+ *end = 0;
+ }
+
+ if (!isempty(arg_slice) && !strextend_with_separator(&name, "-", arg_slice))
+ return log_oom();
+
+ if (!name)
+ return 0;
+
+ r = unit_name_mangle_with_suffix(name, "as 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_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) {
+ _cleanup_free_ char *n = NULL;
+
+ n = strjoin("TERM=", e);
+ if (!n)
+ return log_oom();
+
+ 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."); /* let' strip the usual prefix */
+ if (!id)
+ id = startswith(unique, ":"); /* the spec only requires things to start with a colon, hence
+ * let's add a generic fallback for that. */
+ 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;
+
+ /* Current state of the unit */
+ char *active_state;
+ bool has_job;
+
+ /* The exit data of the unit */
+ 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;
+ uint64_t io_read_bytes;
+ uint64_t io_write_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") && !c->has_job;
+ 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 map_job(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
+ bool *b = userdata;
+ const char *job;
+ uint32_t id;
+ int r;
+
+ r = sd_bus_message_read(m, "(uo)", &id, &job);
+ if (r < 0)
+ return r;
+
+ *b = id != 0 || !streq(job, "/");
+ return 0;
+}
+
+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) },
+ { "IOReadBytes", "t", NULL, offsetof(RunContext, io_read_bytes) },
+ { "IOWriteBytes", "t", NULL, offsetof(RunContext, io_write_bytes) },
+ { "Job", "(uo)", map_job, offsetof(RunContext, has_job) },
+ {}
+ };
+
+ _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 = ASSERT_PTR(userdata);
+
+ assert(m);
+
+ 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();
+ }
+
+ /* Optionally, wait for the start job to complete. If we are supposed to read the service's stdin
+ * lets skip this however, because we should start that already when the start job is running, and
+ * there's little point in waiting for the start job to complete in that case anyway, as we'll wait
+ * for EOF anyway, which is going to be much later. */
+ if (!arg_no_block && arg_stdio == ARG_STDIO_NONE) {
+ 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, "as 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 = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "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, arg_user ? STRV_MAKE_CONST("--user") : NULL);
+ 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,
+ .io_read_bytes = UINT64_MAX,
+ .io_write_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, with 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=%u",
+ 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 (timestamp_is_set(c.inactive_enter_usec) &&
+ timestamp_is_set(c.inactive_exit_usec) &&
+ c.inactive_enter_usec > c.inactive_exit_usec)
+ log_info("Service runtime: %s",
+ FORMAT_TIMESPAN(c.inactive_enter_usec - c.inactive_exit_usec, USEC_PER_MSEC));
+
+ if (c.cpu_usage_nsec != NSEC_INFINITY)
+ log_info("CPU time consumed: %s",
+ FORMAT_TIMESPAN(DIV_ROUND_UP(c.cpu_usage_nsec, NSEC_PER_USEC), USEC_PER_MSEC));
+
+ if (c.ip_ingress_bytes != UINT64_MAX)
+ log_info("IP traffic received: %s", FORMAT_BYTES(c.ip_ingress_bytes));
+
+ if (c.ip_egress_bytes != UINT64_MAX)
+ log_info("IP traffic sent: %s", FORMAT_BYTES(c.ip_egress_bytes));
+
+ if (c.io_read_bytes != UINT64_MAX)
+ log_info("IO bytes read: %s", FORMAT_BYTES(c.io_read_bytes));
+
+ if (c.io_write_bytes != UINT64_MAX)
+ log_info("IO bytes written: %s", FORMAT_BYTES(c.io_write_bytes));
+ }
+
+ /* Try to propagate the service's return value. But if the service defines
+ * e.g. SuccessExitStatus, honour this, and return 0 to mean "success". */
+ if (streq_ptr(c.result, "success"))
+ *retval = 0;
+ else if (streq_ptr(c.result, "exit-code") && c.exit_status > 0)
+ *retval = c.exit_status;
+ else if (streq_ptr(c.result, "signal"))
+ *retval = EXIT_EXCEPTION;
+ 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, "as 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 = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "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, arg_user ? STRV_MAKE_CONST("--user") : NULL);
+ 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);
+ }
+
+ if (arg_working_directory && chdir(arg_working_directory) < 0)
+ return log_error_errno(errno, "Failed to change directory to '%s': %m", arg_working_directory);
+
+ env = strv_env_merge(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, "as 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, "as trigger",
+ 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 = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "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();
+ 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, arg_user ? STRV_MAKE_CONST("--user") : NULL);
+ 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 bool shall_make_executable_absolute(void) {
+ if (strv_isempty(arg_cmdline))
+ return false;
+ if (arg_transport != BUS_TRANSPORT_LOCAL)
+ return false;
+
+ FOREACH_STRING(f, "RootDirectory=", "RootImage=", "ExecSearchPath=", "MountImages=", "ExtensionImages=")
+ if (strv_find_startswith(arg_property, f))
+ return false;
+
+ return true;
+}
+
+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_show_color(true);
+ log_parse_environment();
+ log_open();
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ return r;
+
+ if (shall_make_executable_absolute()) {
+ /* Patch in an absolute path to fail early for user convenience, but only when we can do it
+ * (i.e. we will be running from the same file system). This also uses the user's $PATH,
+ * while we use a fixed search path in the manager. */
+
+ _cleanup_free_ char *command = NULL;
+ r = find_executable(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 || (arg_user && arg_transport != BUS_TRANSPORT_LOCAL))
+ 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 bus_log_connect_error(r, arg_transport);
+
+ 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 (arg_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);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 09:59:51 +0000