chiark / gitweb /
localectl: port over to bus_log_create_error()
[elogind.git] / src / run / run.c
index b451168..f4c7005 100644 (file)
 #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_user = 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 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",
+        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;
@@ -52,17 +65,28 @@ static int parse_argv(int argc, char *argv[]) {
         enum {
                 ARG_VERSION = 0x100,
                 ARG_USER,
+                ARG_SYSTEM,
                 ARG_SCOPE,
-                ARG_UNIT
+                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      },
-                { "scope",     no_argument,       NULL, ARG_SCOPE     },
-                { "unit",      required_argument, NULL, ARG_UNIT      },
-                { NULL,        0,                 NULL, 0             }
+                { "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;
@@ -70,13 +94,12 @@ static int parse_argv(int argc, char *argv[]) {
         assert(argc >= 0);
         assert(argv);
 
-        while ((c = getopt_long(argc, argv, "+h", options, NULL)) >= 0) {
+        while ((c = getopt_long(argc, argv, "+hrH:M:", options, NULL)) >= 0) {
 
                 switch (c) {
 
                 case 'h':
-                        help();
-                        return 0;
+                        return help();
 
                 case ARG_VERSION:
                         puts(PACKAGE_STRING);
@@ -87,6 +110,10 @@ static int parse_argv(int argc, char *argv[]) {
                         arg_user = true;
                         break;
 
+                case ARG_SYSTEM:
+                        arg_user = false;
+                        break;
+
                 case ARG_SCOPE:
                         arg_scope = true;
                         break;
@@ -95,12 +122,37 @@ static int parse_argv(int argc, char *argv[]) {
                         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:
-                        log_error("Unknown option code %c", c);
-                        return -EINVAL;
+                        assert_not_reached("Unhandled option");
                 }
         }
 
@@ -109,6 +161,16 @@ static int parse_argv(int argc, char *argv[]) {
                 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;
 }
 
@@ -135,7 +197,23 @@ static int message_start_transient_unit_new(sd_bus *bus, const char *name, sd_bu
         if (r < 0)
                 return r;
 
-        r = sd_bus_message_open_container(m, 'r', "sv");
+        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;
 
@@ -152,10 +230,6 @@ static int message_start_transient_unit_send(sd_bus *bus, sd_bus_message *m, sd_
         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);
 }
 
@@ -180,6 +254,14 @@ static int start_transient_service(
         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;
+
         r = sd_bus_message_append(m, "s", "ExecStart");
         if (r < 0)
                 return r;
@@ -230,6 +312,10 @@ static int start_transient_service(
         if (r < 0)
                 return r;
 
+        r = sd_bus_message_close_container(m);
+        if (r < 0)
+                return r;
+
         return  message_start_transient_unit_send(bus, m, error, &reply);
 }
 
@@ -253,7 +339,7 @@ static int start_transient_scope(
         if (r < 0)
                 return r;
 
-        r = sd_bus_message_append(m, "sv", "PIDs", "au", 1, (uint32_t) getpid());
+        r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, (uint32_t) getpid());
         if (r < 0)
                 return r;
 
@@ -269,6 +355,7 @@ static int start_transient_scope(
 int main(int argc, char* argv[]) {
         sd_bus_error error = SD_BUS_ERROR_NULL;
         _cleanup_bus_unref_ sd_bus *bus = NULL;
+        _cleanup_free_ char *description = NULL, *command = NULL;
         int r;
 
         log_parse_environment();
@@ -276,15 +363,29 @@ int main(int argc, char* argv[]) {
 
         r = parse_argv(argc, argv);
         if (r <= 0)
-                goto fail;
+                goto finish;
 
-        if (arg_user)
-                r = sd_bus_open_user(&bus);
-        else
-                r = sd_bus_open_system(&bus);
+        r = find_binary(argv[optind], &command);
+        if (r < 0) {
+                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;
+                }
+
+                arg_description = description;
+        }
+
+        r = bus_open_transport(arg_transport, arg_host, arg_user, &bus);
         if (r < 0) {
-                log_error("Failed to create new bus connection: %s", strerror(-r));
-                goto fail;
+                log_error("Failed to create bus connection: %s", strerror(-r));
+                goto finish;
         }
 
         if (arg_scope)
@@ -292,11 +393,11 @@ int main(int argc, char* argv[]) {
         else
                 r = start_transient_service(bus, argv + optind, &error);
         if (r < 0) {
-                log_error("Failed start transient unit: %s", error.message);
+                log_error("Failed start transient unit: %s", error.message ? error.message : strerror(-r));
                 sd_bus_error_free(&error);
-                goto fail;
+                goto finish;
         }
 
-fail:
+finish:
         return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
 }