diff options
Diffstat (limited to 'src/run/run.c')
| -rw-r--r-- | src/run/run.c | 194 |
1 files changed, 170 insertions, 24 deletions
diff --git a/src/run/run.c b/src/run/run.c index 9f8bda48a..b45116870 100644 --- a/src/run/run.c +++ b/src/run/run.c @@ -20,22 +20,104 @@ ***/ #include <stdio.h> +#include <getopt.h> #include "sd-bus.h" #include "bus-internal.h" #include "bus-message.h" #include "strv.h" +#include "build.h" +#include "unit-name.h" -static int start_transient_service( - sd_bus *bus, - const char *name, - char **argv, - sd_bus_error *error) { +static bool arg_scope = false; +static bool arg_user = false; +static const char *arg_unit = NULL; - _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL; - char **i; +static int help(void) { + + printf("%s [OPTIONS...] [COMMAND LINE...]\n\n" + "Notify the init system about service status updates.\n\n" + " -h --help Show this help\n" + " --version Show package version\n" + " --user Run as user unit\n" + " --scope Run this as scope rather than service\n" + " --unit=UNIT Run under the specified unit name\n", + program_invocation_short_name); + + return 0; +} + +static int parse_argv(int argc, char *argv[]) { + + enum { + ARG_VERSION = 0x100, + ARG_USER, + ARG_SCOPE, + ARG_UNIT + }; + + static const struct option options[] = { + { "help", no_argument, NULL, 'h' }, + { "version", no_argument, NULL, ARG_VERSION }, + { "user", no_argument, NULL, ARG_USER }, + { "scope", no_argument, NULL, ARG_SCOPE }, + { "unit", required_argument, NULL, ARG_UNIT }, + { NULL, 0, NULL, 0 } + }; + + int c; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "+h", 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_SCOPE: + arg_scope = true; + break; + + case ARG_UNIT: + arg_unit = optarg; + break; + + case '?': + return -EINVAL; + + default: + log_error("Unknown option code %c", c); + return -EINVAL; + } + } + + if (optind >= argc) { + log_error("Command line to execute required."); + 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; + log_info("Running as unit %s.", name); + r = sd_bus_message_new_method_call( bus, "org.freedesktop.systemd1", @@ -57,6 +139,47 @@ static int start_transient_service( 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; + + 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 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, *reply = 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, "s", "ExecStart"); if (r < 0) return r; @@ -107,46 +230,69 @@ static int start_transient_service( if (r < 0) return r; - r = sd_bus_message_close_container(m); + return message_start_transient_unit_send(bus, m, error, &reply); +} + +static int start_transient_scope( + sd_bus *bus, + char **argv, + sd_bus_error *error) { + + _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL; + _cleanup_free_ char *name = NULL; + int r; + + 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_close_container(m); + 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, &reply); 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_unref_ sd_bus *bus = NULL; - _cleanup_free_ char *name = NULL; int r; log_parse_environment(); log_open(); - if (argc < 2) { - log_error("Missing command line."); - r = -EINVAL; + r = parse_argv(argc, argv); + if (r <= 0) goto fail; - } - r = sd_bus_open_user(&bus); + if (arg_user) + r = sd_bus_open_user(&bus); + else + r = sd_bus_open_system(&bus); if (r < 0) { - log_error("Failed to create new bus: %s", strerror(-r)); - goto fail; - } - - if (asprintf(&name, "run-%lu.service", (unsigned long) getpid()) < 0) { - r = log_oom(); + log_error("Failed to create new bus connection: %s", strerror(-r)); goto fail; } - r = start_transient_service(bus, name, argv + 1, &error); + 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 service: %s", error.message); + log_error("Failed start transient unit: %s", error.message); sd_bus_error_free(&error); goto fail; } |