***/
#include <stdio.h>
+#include <getopt.h>
#include "sd-bus.h"
-#include "bus-internal.h"
-#include "bus-message.h"
+#include "bus-util.h"
#include "strv.h"
+#include "build.h"
+#include "unit-name.h"
+#include "path-util.h"
+#include "bus-error.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 char *arg_host = NULL;
+static bool arg_user = false;
+
+static int help(void) {
+
+ printf("%s [OPTIONS...] COMMAND [ARGS...]\n\n"
+ "Run the specified command in a transient scope or service unit.\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"
+ " --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",
+ program_invocation_short_name);
+
+ return 0;
+}
-static int start_transient_service(
- sd_bus *bus,
- const char *name,
- char **argv,
- sd_bus_error *error) {
+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,
+ };
+
+ 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' },
+ {},
+ };
+
+ int c;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "+hrH:M:", options, NULL)) >= 0) {
+
+ switch (c) {
+
+ case 'h':
+ return help();
+
+ 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_CONTAINER;
+ arg_host = optarg;
+ break;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ assert_not_reached("Unhandled option");
+ }
+ }
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
- char **i;
+ if (optind >= argc) {
+ 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;
+ }
+
+ return 1;
+}
+
+static int message_start_transient_unit_new(sd_bus *bus, const char *name, sd_bus_message **ret) {
+ _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
int r;
+ assert(bus);
+ assert(name);
+ assert(ret);
+
+ log_info("Running as unit %s.", name);
+
r = sd_bus_message_new_method_call(
bus,
"org.freedesktop.systemd1",
if (r < 0)
return r;
+ r = sd_bus_message_append(m, "(sv)", "Description", "s", arg_description);
+ if (r < 0)
+ return r;
+
+ if (!isempty(arg_slice)) {
+ _cleanup_free_ char *slice;
+
+ slice = unit_name_mangle_with_suffix(arg_slice, ".slice");
+ if (!slice)
+ return -ENOMEM;
+
+ r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", arg_send_sighup);
+ if (r < 0)
+ return r;
+
+ *ret = m;
+ m = NULL;
+
+ return 0;
+}
+
+static int message_start_transient_unit_send(sd_bus *bus, sd_bus_message *m, sd_bus_error *error, sd_bus_message **reply) {
+ int r;
+
+ assert(bus);
+ assert(m);
+
+ r = sd_bus_message_close_container(m);
+ if (r < 0)
+ return r;
+
+ return sd_bus_send_with_reply_and_block(bus, m, 0, error, reply);
+}
+
+static int start_transient_service(
+ sd_bus *bus,
+ char **argv,
+ sd_bus_error *error) {
+
+ _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+ _cleanup_free_ char *name = NULL;
+ char **i;
+ int r;
+
+ if (arg_unit)
+ name = unit_name_mangle_with_suffix(arg_unit, ".service");
+ else
+ asprintf(&name, "run-%lu.service", (unsigned long) getpid());
+ if (!name)
+ return -ENOMEM;
+
+ r = message_start_transient_unit_new(bus, name, &m);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(m, "(sv)", "RemainAfterExit", "b", arg_remain_after_exit);
+ if (r < 0)
+ return r;
+
r = sd_bus_message_open_container(m, 'r', "sv");
if (r < 0)
return r;
if (r < 0)
return r;
- r = sd_bus_message_close_container(m);
+ return message_start_transient_unit_send(bus, m, error, NULL);
+}
+
+static int start_transient_scope(
+ sd_bus *bus,
+ char **argv,
+ sd_bus_error *error) {
+
+ _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
+ _cleanup_free_ char *name = NULL;
+ int r;
+
+ assert(bus);
+
+ if (arg_unit)
+ name = unit_name_mangle_with_suffix(arg_unit, ".scope");
+ else
+ asprintf(&name, "run-%lu.scope", (unsigned long) getpid());
+ if (!name)
+ return -ENOMEM;
+
+ r = message_start_transient_unit_new(bus, name, &m);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, (uint32_t) getpid());
+ if (r < 0)
+ return r;
+
+ r = message_start_transient_unit_send(bus, m, error, NULL);
if (r < 0)
return r;
- return sd_bus_send_with_reply_and_block(bus, m, 0, error, &reply);
+ execvp(argv[0], argv);
+ log_error("Failed to execute: %m");
+ return -errno;
}
int main(int argc, char* argv[]) {
- sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_unref_ sd_bus *bus = NULL;
- _cleanup_free_ char *name = NULL;
+ _cleanup_free_ char *description = NULL, *command = NULL;
int r;
log_parse_environment();
log_open();
- if (argc < 2) {
- log_error("Missing command line.");
- r = -EINVAL;
- goto fail;
- }
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ goto finish;
- r = sd_bus_open_user(&bus);
+ r = find_binary(argv[optind], &command);
if (r < 0) {
- log_error("Failed to create new bus: %s", strerror(-r));
- goto fail;
+ log_error("Failed to find executable %s: %s", argv[optind], strerror(-r));
+ goto finish;
}
+ argv[optind] = command;
+
+ if (!arg_description) {
+ description = strv_join(argv + optind, " ");
+ if (!description) {
+ r = log_oom();
+ goto finish;
+ }
- if (asprintf(&name, "run-%lu.service", (unsigned long) getpid()) < 0) {
- r = log_oom();
- goto fail;
+ arg_description = description;
}
- r = start_transient_service(bus, name, argv + 1, &error);
+ r = bus_open_transport(arg_transport, arg_host, arg_user, &bus);
if (r < 0) {
- log_error("Failed start transient service: %s", error.message);
- sd_bus_error_free(&error);
- goto fail;
+ log_error("Failed to create bus connection: %s", strerror(-r));
+ goto finish;
}
-fail:
+ if (arg_scope)
+ r = start_transient_scope(bus, argv + optind, &error);
+ else
+ r = start_transient_service(bus, argv + optind, &error);
+ if (r < 0)
+ log_error("Failed start transient unit: %s", bus_error_message(&error, r));
+
+finish:
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
~ianmdlvl / elogind.git / blobdiff