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| l--------- | src/run/Makefile | 1 | ||||
| -rw-r--r-- | src/run/run.c | 1108 |
2 files changed, 0 insertions, 1109 deletions
diff --git a/src/run/Makefile b/src/run/Makefile deleted file mode 120000 index d0b0e8e008..0000000000 --- a/src/run/Makefile +++ /dev/null @@ -1 +0,0 @@ -../Makefile
\ No newline at end of file diff --git a/src/run/run.c b/src/run/run.c deleted file mode 100644 index 3ded2c7e66..0000000000 --- a/src/run/run.c +++ /dev/null @@ -1,1108 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdio.h> -#include <getopt.h> - -#include "sd-bus.h" -#include "sd-event.h" -#include "bus-util.h" -#include "event-util.h" -#include "strv.h" -#include "build.h" -#include "unit-name.h" -#include "env-util.h" -#include "path-util.h" -#include "bus-error.h" -#include "calendarspec.h" -#include "ptyfwd.h" - -static bool arg_scope = false; -static bool arg_remain_after_exit = 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 bool arg_pty = false; -static usec_t arg_on_active = 0; -static usec_t arg_on_boot = 0; -static usec_t arg_on_startup = 0; -static usec_t arg_on_unit_active = 0; -static usec_t arg_on_unit_inactive = 0; -static char *arg_on_calendar = NULL; -static char **arg_timer_property = NULL; -static bool arg_quiet = false; - -static void help(void) { - printf("%s [OPTIONS...] {COMMAND} [ARGS...]\n\n" - "Run the specified command in a transient scope or service or timer\n" - "unit. If timer option is specified and unit is exist which is\n" - "specified with --unit option then command can be ommited.\n\n" - " -h --help Show this help\n" - " --version Show package version\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 unit property\n" - " --description=TEXT Description for unit\n" - " --slice=SLICE Run in the specified slice\n" - " -r --remain-after-exit Leave service around until explicitly stopped\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" - " --setenv=NAME=VALUE Set environment\n" - " -t --pty Run service on pseudo tty\n" - " -q --quiet Suppress information messages during runtime\n\n" - "Timer options:\n\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", - program_invocation_short_name); -} - -static bool with_timer(void) { - return arg_on_active || arg_on_boot || arg_on_startup || arg_on_unit_active || arg_on_unit_inactive || arg_on_calendar; -} - -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_EXEC_USER, - ARG_EXEC_GROUP, - ARG_SERVICE_TYPE, - ARG_NICE, - ARG_SETENV, - ARG_TTY, - ARG_ON_ACTIVE, - ARG_ON_BOOT, - ARG_ON_STARTUP, - ARG_ON_UNIT_ACTIVE, - ARG_ON_UNIT_INACTIVE, - ARG_ON_CALENDAR, - ARG_TIMER_PROPERTY - }; - - 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 }, - { "uid", required_argument, NULL, ARG_EXEC_USER }, - { "gid", required_argument, NULL, ARG_EXEC_GROUP }, - { "nice", required_argument, NULL, ARG_NICE }, - { "setenv", required_argument, NULL, ARG_SETENV }, - { "property", required_argument, NULL, 'p' }, - { "tty", no_argument, NULL, 't' }, - { "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 }, - {}, - }; - - int r, c; - CalendarSpec *spec = NULL; - - assert(argc >= 0); - assert(argv); - - while ((c = getopt_long(argc, argv, "+hrH:M:p:tq", options, NULL)) >= 0) - - switch (c) { - - case 'h': - help(); - return 0; - - case ARG_VERSION: - puts(PACKAGE_STRING); - puts(SYSTEMD_FEATURES); - return 0; - - 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 = safe_atoi(optarg, &arg_nice); - if (r < 0 || arg_nice < PRIO_MIN || arg_nice >= PRIO_MAX) { - log_error("Failed to parse nice value"); - return -EINVAL; - } - - arg_nice_set = true; - break; - - case ARG_SETENV: - 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': - arg_pty = true; - break; - - case 'q': - arg_quiet = true; - break; - - case ARG_ON_ACTIVE: - - r = parse_sec(optarg, &arg_on_active); - if (r < 0) { - log_error("Failed to parse timer value: %s", optarg); - return r; - } - - break; - - case ARG_ON_BOOT: - - r = parse_sec(optarg, &arg_on_boot); - if (r < 0) { - log_error("Failed to parse timer value: %s", optarg); - return r; - } - - break; - - case ARG_ON_STARTUP: - - r = parse_sec(optarg, &arg_on_startup); - if (r < 0) { - log_error("Failed to parse timer value: %s", optarg); - return r; - } - - break; - - case ARG_ON_UNIT_ACTIVE: - - r = parse_sec(optarg, &arg_on_unit_active); - if (r < 0) { - log_error("Failed to parse timer value: %s", optarg); - return r; - } - - break; - - case ARG_ON_UNIT_INACTIVE: - - r = parse_sec(optarg, &arg_on_unit_inactive); - if (r < 0) { - log_error("Failed to parse timer value: %s", optarg); - return r; - } - - break; - - case ARG_ON_CALENDAR: - - r = calendar_spec_from_string(optarg, &spec); - if (r < 0) { - log_error("Invalid calendar spec: %s", optarg); - return r; - } - free(spec); - arg_on_calendar = optarg; - break; - - case ARG_TIMER_PROPERTY: - - if (strv_extend(&arg_timer_property, optarg) < 0) - return log_oom(); - - break; - - case '?': - return -EINVAL; - - default: - assert_not_reached("Unhandled option"); - } - - if ((optind >= argc) && (!arg_unit || !with_timer())) { - log_error("Command line to execute required."); - return -EINVAL; - } - - if (arg_user && arg_transport != BUS_TRANSPORT_LOCAL) { - log_error("Execution in user context is not supported on non-local systems."); - return -EINVAL; - } - - if (arg_scope && arg_transport != BUS_TRANSPORT_LOCAL) { - log_error("Scope execution is not supported on non-local systems."); - return -EINVAL; - } - - if (arg_scope && (arg_remain_after_exit || arg_service_type)) { - log_error("--remain-after-exit and --service-type= are not supported in --scope mode."); - return -EINVAL; - } - - if (arg_pty && (with_timer() || arg_scope)) { - log_error("--pty is not compatible in timer or --scope mode."); - return -EINVAL; - } - - if (arg_scope && with_timer()) { - log_error("Timer options are not supported in --scope mode."); - return -EINVAL; - } - - if (arg_timer_property && !with_timer()) { - log_error("--timer-property= has no effect without any other timer options."); - return -EINVAL; - } - - return 1; -} - -static int transient_unit_set_properties(sd_bus_message *m, char **properties) { - char **i; - int r; - - r = sd_bus_message_append(m, "(sv)", "Description", "s", arg_description); - if (r < 0) - return r; - - STRV_FOREACH(i, properties) { - r = sd_bus_message_open_container(m, 'r', "sv"); - if (r < 0) - return r; - - r = bus_append_unit_property_assignment(m, *i); - if (r < 0) - return r; - - r = sd_bus_message_close_container(m); - 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; - - slice = unit_name_mangle_with_suffix(arg_slice, MANGLE_NOGLOB, ".slice"); - if (!slice) - return -ENOMEM; - - r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice); - if (r < 0) - return r; - } - - return 0; -} - -static int transient_kill_set_properties(sd_bus_message *m) { - assert(m); - - if (arg_send_sighup) - return sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", arg_send_sighup); - else - return 0; -} - -static int transient_service_set_properties(sd_bus_message *m, char **argv, const char *pty_path) { - int r; - - assert(m); - - r = transient_unit_set_properties(m, 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 r; - } - - if (arg_service_type) { - r = sd_bus_message_append(m, "(sv)", "Type", "s", arg_service_type); - if (r < 0) - return r; - } - - if (arg_exec_user) { - r = sd_bus_message_append(m, "(sv)", "User", "s", arg_exec_user); - if (r < 0) - return r; - } - - if (arg_exec_group) { - r = sd_bus_message_append(m, "(sv)", "Group", "s", arg_exec_group); - if (r < 0) - return r; - } - - if (arg_nice_set) { - r = sd_bus_message_append(m, "(sv)", "Nice", "i", arg_nice); - if (r < 0) - return r; - } - - if (pty_path) { - const char *e; - - 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 r; - - 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 r; - } - } - - if (!strv_isempty(arg_environment)) { - r = sd_bus_message_open_container(m, 'r', "sv"); - if (r < 0) - return r; - - r = sd_bus_message_append(m, "s", "Environment"); - if (r < 0) - return r; - - r = sd_bus_message_open_container(m, 'v', "as"); - if (r < 0) - return r; - - r = sd_bus_message_append_strv(m, arg_environment); - if (r < 0) - return r; - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - } - - /* Exec container */ - { - r = sd_bus_message_open_container(m, 'r', "sv"); - if (r < 0) - return r; - - r = sd_bus_message_append(m, "s", "ExecStart"); - if (r < 0) - return r; - - r = sd_bus_message_open_container(m, 'v', "a(sasb)"); - if (r < 0) - return r; - - r = sd_bus_message_open_container(m, 'a', "(sasb)"); - if (r < 0) - return r; - - r = sd_bus_message_open_container(m, 'r', "sasb"); - if (r < 0) - return r; - - r = sd_bus_message_append(m, "s", argv[0]); - if (r < 0) - return r; - - r = sd_bus_message_append_strv(m, argv); - if (r < 0) - return r; - - r = sd_bus_message_append(m, "b", false); - if (r < 0) - return r; - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - } - - return 0; -} - -static int transient_scope_set_properties(sd_bus_message *m) { - int r; - - assert(m); - - r = transient_unit_set_properties(m, arg_property); - if (r < 0) - return r; - - r = transient_kill_set_properties(m); - if (r < 0) - return r; - - r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, (uint32_t) getpid()); - if (r < 0) - return r; - - return 0; -} - -static int transient_timer_set_properties(sd_bus_message *m) { - int r; - - assert(m); - - r = transient_unit_set_properties(m, arg_timer_property); - if (r < 0) - return r; - - if (arg_on_active) { - r = sd_bus_message_append(m, "(sv)", "OnActiveSec", "t", arg_on_active); - if (r < 0) - return r; - } - - if (arg_on_boot) { - r = sd_bus_message_append(m, "(sv)", "OnBootSec", "t", arg_on_boot); - if (r < 0) - return r; - } - - if (arg_on_startup) { - r = sd_bus_message_append(m, "(sv)", "OnStartupSec", "t", arg_on_startup); - if (r < 0) - return r; - } - - if (arg_on_unit_active) { - r = sd_bus_message_append(m, "(sv)", "OnUnitActiveSec", "t", arg_on_unit_active); - if (r < 0) - return r; - } - - if (arg_on_unit_inactive) { - r = sd_bus_message_append(m, "(sv)", "OnUnitInactiveSec", "t", arg_on_unit_inactive); - if (r < 0) - return r; - } - - if (arg_on_calendar) { - r = sd_bus_message_append(m, "(sv)", "OnCalendar", "s", arg_on_calendar); - if (r < 0) - return r; - } - - return 0; -} - -static int start_transient_service( - sd_bus *bus, - char **argv) { - - _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; - _cleanup_bus_message_unref_ sd_bus_message *m = NULL; - _cleanup_free_ char *service = NULL, *pty_path = NULL; - _cleanup_close_ int master = -1; - int r; - - assert(bus); - assert(argv); - - if (arg_pty) { - - if (arg_transport == BUS_TRANSPORT_LOCAL) { - master = posix_openpt(O_RDWR|O_NOCTTY|O_CLOEXEC|O_NDELAY); - 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"); - - } else if (arg_transport == BUS_TRANSPORT_MACHINE) { - _cleanup_bus_unref_ sd_bus *system_bus = NULL; - _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; - const char *s; - - r = sd_bus_open_system(&system_bus); - if (r < 0) - 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, - &reply, - "s", arg_host); - if (r < 0) { - log_error("Failed to get machine PTY: %s", bus_error_message(&error, -r)); - return r; - } - - r = sd_bus_message_read(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 (unlockpt(master) < 0) - return log_error_errno(errno, "Failed to unlock tty: %m"); - } - - if (arg_unit) { - service = unit_name_mangle_with_suffix(arg_unit, MANGLE_NOGLOB, ".service"); - if (!service) - return log_oom(); - } else if (asprintf(&service, "run-"PID_FMT".service", getpid()) < 0) - return log_oom(); - - 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); - - /* 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, argv, pty_path); - 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); - - /* Auxiliary units */ - r = sd_bus_message_append(m, "a(sa(sv))", 0); - if (r < 0) - return bus_log_create_error(r); - - r = sd_bus_call(bus, m, 0, &error, NULL); - if (r < 0) { - log_error("Failed to start transient service unit: %s", bus_error_message(&error, -r)); - return r; - } - - if (master >= 0) { - _cleanup_(pty_forward_freep) PTYForward *forward = NULL; - _cleanup_event_unref_ sd_event *event = NULL; - sigset_t mask; - char last_char = 0; - - r = sd_event_default(&event); - if (r < 0) - return log_error_errno(r, "Failed to get event loop: %m"); - - assert_se(sigemptyset(&mask) == 0); - sigset_add_many(&mask, SIGWINCH, SIGTERM, SIGINT, -1); - assert_se(sigprocmask(SIG_BLOCK, &mask, NULL) == 0); - - sd_event_add_signal(event, NULL, SIGINT, NULL, NULL); - sd_event_add_signal(event, NULL, SIGTERM, NULL, NULL); - - if (!arg_quiet) - log_info("Running as unit %s.\nPress ^] three times within 1s to disconnect TTY.", service); - - r = pty_forward_new(event, master, false, false, &forward); - if (r < 0) - return log_error_errno(r, "Failed to create PTY forwarder: %m"); - - r = sd_event_loop(event); - if (r < 0) - return log_error_errno(r, "Failed to run event loop: %m"); - - pty_forward_get_last_char(forward, &last_char); - - forward = pty_forward_free(forward); - - if (!arg_quiet && last_char != '\n') - fputc('\n', stdout); - - } else if (!arg_quiet) - log_info("Running as unit %s.", service); - - return 0; -} - -static int start_transient_scope( - sd_bus *bus, - char **argv) { - - _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; - _cleanup_strv_free_ char **env = NULL, **user_env = NULL; - _cleanup_bus_message_unref_ sd_bus_message *m = NULL; - _cleanup_free_ char *scope = NULL; - int r; - - assert(bus); - assert(argv); - - if (arg_unit) { - scope = unit_name_mangle_with_suffix(arg_unit, MANGLE_NOGLOB, ".scope"); - if (!scope) - return log_oom(); - } else if (asprintf(&scope, "run-"PID_FMT".scope", getpid()) < 0) - return log_oom(); - - 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); - - /* 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 bus_log_create_error(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); - - r = sd_bus_call(bus, m, 0, &error, NULL); - if (r < 0) { - log_error("Failed to start transient scope unit: %s", bus_error_message(&error, -r)); - return r; - } - - 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); - 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); - if (r < 0) - return log_error_errno(r, "Failed to resolve user %s: %m", arg_exec_user); - - r = strv_extendf(&user_env, "HOME=%s", home); - if (r < 0) - return log_oom(); - - 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 as unit %s.", scope); - - execvpe(argv[0], argv, env); - - return log_error_errno(errno, "Failed to execute: %m"); -} - -static int start_transient_timer( - sd_bus *bus, - char **argv) { - - _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; - _cleanup_bus_message_unref_ sd_bus_message *m = NULL; - _cleanup_free_ char *timer = NULL, *service = NULL; - int r; - - assert(bus); - assert(argv); - - if (arg_unit) { - switch(unit_name_to_type(arg_unit)) { - - case UNIT_SERVICE: - service = strdup(arg_unit); - if (!service) - return log_oom(); - - timer = unit_name_change_suffix(service, ".timer"); - if (!timer) - return log_oom(); - break; - - case UNIT_TIMER: - timer = strdup(arg_unit); - if (!timer) - return log_oom(); - - service = unit_name_change_suffix(timer, ".service"); - if (!service) - return log_oom(); - break; - - default: - service = unit_name_mangle_with_suffix(arg_unit, MANGLE_NOGLOB, ".service"); - if (!service) - return log_oom(); - - timer = unit_name_mangle_with_suffix(arg_unit, MANGLE_NOGLOB, ".timer"); - if (!timer) - return log_oom(); - - break; - } - } else if ((asprintf(&service, "run-"PID_FMT".service", getpid()) < 0) || - (asprintf(&timer, "run-"PID_FMT".timer", getpid()) < 0)) - return log_oom(); - - 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); - - /* Name and Mode */ - r = sd_bus_message_append(m, "ss", timer, "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_timer_set_properties(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_open_container(m, 'a', "(sa(sv))"); - if (r < 0) - return bus_log_create_error(r); - - if (argv[0]) { - 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, argv, NULL); - 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_call(bus, m, 0, &error, NULL); - if (r < 0) { - log_error("Failed to start transient timer unit: %s", bus_error_message(&error, -r)); - return r; - } - - log_info("Running as unit %s.", timer); - if (argv[0]) - log_info("Will run as unit %s.", service); - - return 0; -} - -int main(int argc, char* argv[]) { - _cleanup_bus_close_unref_ sd_bus *bus = NULL; - _cleanup_free_ char *description = NULL, *command = NULL; - int r; - - log_parse_environment(); - log_open(); - - r = parse_argv(argc, argv); - if (r <= 0) - goto finish; - - if (argc > optind) { - r = find_binary(argv[optind], arg_transport == BUS_TRANSPORT_LOCAL, &command); - if (r < 0) { - log_error_errno(r, "Failed to find executable %s%s: %m", - argv[optind], - arg_transport == BUS_TRANSPORT_LOCAL ? "" : " on local system"); - goto finish; - } - argv[optind] = command; - } - - if (!arg_description) { - description = strv_join(argv + optind, " "); - if (!description) { - r = log_oom(); - goto finish; - } - - if (arg_unit && isempty(description)) { - free(description); - description = strdup(arg_unit); - - if (!description) { - r = log_oom(); - goto finish; - } - } - - arg_description = description; - } - - r = bus_open_transport_systemd(arg_transport, arg_host, arg_user, &bus); - if (r < 0) { - log_error_errno(r, "Failed to create bus connection: %m"); - goto finish; - } - - if (arg_scope) - r = start_transient_scope(bus, argv + optind); - else if (with_timer()) - r = start_transient_timer(bus, argv + optind); - else - r = start_transient_service(bus, argv + optind); - -finish: - strv_free(arg_environment); - strv_free(arg_property); - strv_free(arg_timer_property); - - return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; -} |