/* SPDX-License-Identifier: LGPL-2.1+ */
#include <getopt.h>
#include <stdio.h>
#include "sd-bus.h"
#include "sd-event.h"
#include "alloc-util.h"
#include "bus-error.h"
#include "bus-unit-util.h"
#include "bus-util.h"
#include "calendarspec.h"
#include "env-util.h"
#include "fd-util.h"
#include "format-util.h"
#include "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;
}