/* SPDX-License-Identifier: LGPL-2.1+ */ #include #include #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 "parse-util.h" #include "path-util.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 void help(void) { 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" " -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\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" , program_invocation_short_name); } 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, }; 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' }, {}, }; bool with_trigger = false; int r, c; assert(argc >= 0); assert(argv); while ((c = getopt_long(argc, argv, "+hrH:M:E:p:tPqG", options, NULL)) >= 0) switch (c) { case 'h': help(); return 0; 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(optarg, "OnActiveSec=") || !!startswith(optarg, "OnBootSec=") || !!startswith(optarg, "OnStartupSec=") || !!startswith(optarg, "OnUnitActiveSec=") || !!startswith(optarg, "OnUnitInactiveSec=") || !!startswith(optarg, "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 'G': arg_aggressive_gc = 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) { log_error("Only single trigger (path, socket, timer) unit can be created."); return -EINVAL; } 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 ((optind >= argc) && (!arg_unit || !with_trigger)) { 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_stdio != ARG_STDIO_NONE && (with_trigger || arg_scope)) { log_error("--pty/--pipe is not compatible in timer or --scope mode."); return -EINVAL; } if (arg_stdio != ARG_STDIO_NONE && arg_transport == BUS_TRANSPORT_REMOTE) { log_error("--pty/--pipe is only supported when connecting to the local system or containers."); return -EINVAL; } if (arg_stdio != ARG_STDIO_NONE && arg_no_block) { log_error("--pty/--pipe is not compatible with --no-block."); return -EINVAL; } if (arg_scope && with_trigger) { log_error("Path, socket or 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; } if (arg_wait) { if (arg_no_block) { log_error("--wait may not be combined with --no-block."); return -EINVAL; } if (with_trigger) { log_error("--wait may not be combined with path, socket or timer operations."); return -EINVAL; } if (arg_scope) { log_error("--wait may not be combined with --scope."); return -EINVAL; } } 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, char **argv, 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 (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 */ { 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", argv[0]); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_strv(m, argv); 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) { log_error("Unique name %s has unexpected format.", unique); return -EINVAL; } 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, char **argv, 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(argv); 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, argv, 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 start_transient_scope( sd_bus *bus, char **argv) { _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; int r; assert(bus); assert(argv); 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)); 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_clean(&arg_exec_user, &uid, &gid, &home, &shell); 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(); 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 scope as unit: %s", scope); execvpe(argv[0], argv, env); return log_error_errno(errno, "Failed to execute: %m"); } static int start_transient_trigger( sd_bus *bus, char **argv, 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); assert(argv); 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(argv)) { 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 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 (argv[0]) log_info("Will run service as unit: %s", service); } return 0; } int main(int argc, char* argv[]) { _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL; _cleanup_free_ char *description = NULL, *command = NULL; int r, retval = EXIT_SUCCESS; log_parse_environment(); log_open(); r = parse_argv(argc, argv); if (r <= 0) goto finish; if (argc > optind && arg_transport == BUS_TRANSPORT_LOCAL) { /* Patch in an absolute path */ r = find_binary(argv[optind], &command); if (r < 0) { log_error_errno(r, "Failed to find executable %s: %m", argv[optind]); 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)) { r = free_and_strdup(&description, arg_unit); if (r < 0) goto finish; } 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) { log_error_errno(r, "Failed to create bus connection: %m"); goto finish; } if (arg_scope) r = start_transient_scope(bus, argv + optind); else if (arg_path_property) r = start_transient_trigger(bus, argv + optind, ".path"); else if (arg_socket_property) r = start_transient_trigger(bus, argv + optind, ".socket"); else if (with_timer) r = start_transient_trigger(bus, argv + optind, ".timer"); else r = start_transient_service(bus, argv + optind, &retval); finish: strv_free(arg_environment); strv_free(arg_property); strv_free(arg_path_property); strv_free(arg_socket_property); strv_free(arg_timer_property); return r < 0 ? EXIT_FAILURE : retval; }