core: allow User=, Group=, Nice=, Environment=, Type= to be passed when creating a transient service

5 files changed, 288 insertions, 26 deletions

diff --git a/src/core/dbus-execute.c b/src/core/dbus-execute.c
index edf84f89fd..d2bbda2dba 100644
--- a/src/core/dbus-execute.c
+++ b/src/core/dbus-execute.c
@@ -30,6 +30,7 @@
 #include "execute.h"
 #include "dbus-execute.h"
 #include "capability.h"
+#include "env-util.h"
 
 BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_exec_output, exec_output, ExecOutput);
 
@@ -513,3 +514,126 @@ int bus_property_get_exec_command_list(
 
         return sd_bus_message_close_container(reply);
 }
+
+int bus_exec_context_set_transient_property(
+                Unit *u,
+                ExecContext *c,
+                const char *name,
+                sd_bus_message *message,
+                UnitSetPropertiesMode mode,
+                sd_bus_error *error) {
+
+        int r;
+
+        assert(u);
+        assert(c);
+        assert(name);
+        assert(message);
+
+        if (streq(name, "User")) {
+                const char *uu;
+
+                r = sd_bus_message_read(message, "s", &uu);
+                if (r < 0)
+                        return r;
+
+                if (mode != UNIT_CHECK) {
+
+                        if (isempty(uu)) {
+                                free(c->user);
+                                c->user = NULL;
+                        } else {
+                                char *t;
+
+                                t = strdup(uu);
+                                if (!t)
+                                        return -ENOMEM;
+
+                                free(c->user);
+                                c->user = t;
+                        }
+
+                        unit_write_drop_in_private_format(u, mode, name, "User=%s\n", uu);
+                }
+
+                return 1;
+
+        } else if (streq(name, "Group")) {
+                const char *gg;
+
+                r = sd_bus_message_read(message, "s", &gg);
+                if (r < 0)
+                        return r;
+
+                if (mode != UNIT_CHECK) {
+
+                        if (isempty(gg)) {
+                                free(c->group);
+                                c->group = NULL;
+                        } else {
+                                char *t;
+
+                                t = strdup(gg);
+                                if (!t)
+                                        return -ENOMEM;
+
+                                free(c->group);
+                                c->group = t;
+                        }
+
+                        unit_write_drop_in_private_format(u, mode, name, "Group=%s\n", gg);
+                }
+
+                return 1;
+
+        } else if (streq(name, "Nice")) {
+                int n;
+
+                r = sd_bus_message_read(message, "i", &n);
+                if (r < 0)
+                        return r;
+
+                if (n < PRIO_MIN || n >= PRIO_MAX)
+                        return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Nice value out of range");
+
+                if (mode != UNIT_CHECK) {
+                        c->nice = n;
+                        unit_write_drop_in_private_format(u, mode, name, "Nice=%i\n", n);
+                }
+
+                return 1;
+
+        } else if (streq(name, "Environment")) {
+
+                _cleanup_strv_free_ char **l = NULL;
+
+                r = sd_bus_message_read_strv(message, &l);
+                if (r < 0)
+                        return r;
+
+                if (!strv_env_is_valid(l))
+                        return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment block.");
+
+                if (mode != UNIT_CHECK) {
+                        _cleanup_free_ char *joined;
+                        char **e;
+
+                        e = strv_env_merge(2, c->environment, l);
+                        if (!e)
+                                return -ENOMEM;
+
+                        strv_free(c->environment);
+                        c->environment = e;
+
+                        joined = strv_join(c->environment, " ");
+                        if (!joined)
+                                return -ENOMEM;
+
+                        unit_write_drop_in_private_format(u, mode, name, "Environment=%s\n", joined);
+                }
+
+                return 1;
+        }
+
+        return 0;
+}
diff --git a/src/core/dbus-execute.h b/src/core/dbus-execute.h
index 5c8bc3063d..e4c2d5ddf6 100644
--- a/src/core/dbus-execute.h
+++ b/src/core/dbus-execute.h
@@ -42,3 +42,5 @@ extern const sd_bus_vtable bus_exec_vtable[];
 int bus_property_get_exec_output(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *ret_error);
 int bus_property_get_exec_command(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *ret_error);
 int bus_property_get_exec_command_list(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *ret_error);
+
+int bus_exec_context_set_transient_property(Unit *u, ExecContext *c, const char *name, sd_bus_message *message, UnitSetPropertiesMode mode, sd_bus_error *error);
diff --git a/src/core/dbus-kill.c b/src/core/dbus-kill.c
index 8d3e149f33..f3cfb226e8 100644
--- a/src/core/dbus-kill.c
+++ b/src/core/dbus-kill.c
@@ -70,6 +70,24 @@ int bus_kill_context_set_transient_property(
 
                 return 1;
 
+        } else if (streq(name, "KillSignal")) {
+                int sig;
+
+                r = sd_bus_message_read(message, "i", &sig);
+                if (r < 0)
+                        return r;
+
+                if (sig <= 0 || sig >= _NSIG)
+                        return sd_bus_error_setf(error, "Signal %i out of range", sig);
+
+                if (mode != UNIT_CHECK) {
+                        c->kill_signal = sig;
+
+                        unit_write_drop_in_private_format(u, mode, name, "KillSignal=%s\n", signal_to_string(sig));
+                }
+
+                return 1;
+
         } else if (streq(name, "SendSIGHUP")) {
                 int b;
 
diff --git a/src/core/dbus-service.c b/src/core/dbus-service.c
index 3db9339d45..73cf17541a 100644
--- a/src/core/dbus-service.c
+++ b/src/core/dbus-service.c
@@ -96,6 +96,25 @@ static int bus_service_set_transient_property(
 
                 return 1;
 
+        } else if (streq(name, "Type")) {
+                const char *t;
+                ServiceType k;
+
+                r = sd_bus_message_read(message, "s", &t);
+                if (r < 0)
+                        return r;
+
+                k = service_type_from_string(t);
+                if (k < 0)
+                        return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid service type %s", t);
+
+                if (mode != UNIT_CHECK) {
+                        s->type = k;
+                        unit_write_drop_in_private_format(UNIT(s), mode, name, "Type=%s\n", service_type_to_string(s->type));
+                }
+
+                return 1;
+
         } else if (streq(name, "ExecStart")) {
                 unsigned n = 0;
 
@@ -151,6 +170,7 @@ static int bus_service_set_transient_property(
 
                         n++;
                 }
+
                 if (r < 0)
                         return r;
 
@@ -223,6 +243,10 @@ int bus_service_set_property(
                 if (r != 0)
                         return r;
 
+                r = bus_exec_context_set_transient_property(u, &s->exec_context, name, message, mode, error);
+                if (r != 0)
+                        return r;
+
                 r = bus_kill_context_set_transient_property(u, &s->kill_context, name, message, mode, error);
                 if (r != 0)
                         return r;
diff --git a/src/run/run.c b/src/run/run.c
index 1b14e40e4d..f9c6c292ea 100644
--- a/src/run/run.c
+++ b/src/run/run.c
@@ -39,6 +39,12 @@ static bool arg_send_sighup = false;
 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
 static 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 int help(void) {
 
@@ -54,7 +60,12 @@ static int help(void) {
                "     --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",
+               "     --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"
+               "     --setenv=ENV         Set environment\n",
                program_invocation_short_name);
 
         return 0;
@@ -71,25 +82,35 @@ static int parse_argv(int argc, char *argv[]) {
                 ARG_DESCRIPTION,
                 ARG_SLICE,
                 ARG_SEND_SIGHUP,
+                ARG_EXEC_USER,
+                ARG_EXEC_GROUP,
+                ARG_SERVICE_TYPE,
+                ARG_NICE,
+                ARG_SETENV
         };
 
         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'             },
+                { "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 },
+                { "uid",               required_argument, NULL, ARG_EXEC_USER    },
+                { "gid",               required_argument, NULL, ARG_EXEC_GROUP   },
+                { "nice",              required_argument, NULL, ARG_NICE         },
+                { "setenv",            required_argument, NULL, ARG_SETENV       },
                 {},
         };
 
-        int c;
+        int r, c;
 
         assert(argc >= 0);
         assert(argv);
@@ -148,6 +169,35 @@ static int parse_argv(int argc, char *argv[]) {
                         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 = safe_atoi(optarg, &arg_nice);
+                        if (r < 0) {
+                                log_error("Failed to parse nice value");
+                                return -EINVAL;
+                        }
+
+                        arg_nice_set = true;
+                        break;
+
+                case ARG_SETENV:
+
+                        if (strv_extend(&arg_environment, optarg) < 0)
+                                return log_oom();
+
+                        break;
+
                 case '?':
                         return -EINVAL;
 
@@ -171,6 +221,11 @@ static int parse_argv(int argc, char *argv[]) {
                 return -EINVAL;
         }
 
+        if (arg_scope && (arg_remain_after_exit || arg_service_type || arg_exec_user || arg_exec_group || arg_nice_set || arg_environment)) {
+                log_error("--remain-after-exit, --service-type=, --user=, --group=, --nice= and --setenv= are not supported in --scope mode.");
+                return -EINVAL;
+        }
+
         return 1;
 }
 
@@ -251,7 +306,6 @@ static int start_transient_service(
 
         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
         _cleanup_free_ char *name = NULL;
-        char **i;
         int r;
 
         if (arg_unit)
@@ -269,6 +323,56 @@ static int start_transient_service(
         if (r < 0)
                 return r;
 
+        if (arg_service_type) {
+                r = sd_bus_message_append(m, "(sv)", "Type", "s", arg_service_type);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_exec_user) {
+                r = sd_bus_message_append(m, "(sv)", "User", "s", arg_exec_user);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_exec_group) {
+                r = sd_bus_message_append(m, "(sv)", "Group", "s", arg_exec_group);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_nice_set) {
+                r = sd_bus_message_append(m, "(sv)", "Nice", "i", arg_nice);
+                if (r < 0)
+                        return r;
+        }
+
+        if (!strv_isempty(arg_environment)) {
+                r = sd_bus_message_open_container(m, 'r', "sv");
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_append(m, "s", "Environment");
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_open_container(m, 'v', "as");
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_append_strv(m, arg_environment);
+                if (r < 0)
+                        return 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;
+        }
+
         r = sd_bus_message_open_container(m, 'r', "sv");
         if (r < 0)
                 return r;
@@ -293,17 +397,7 @@ static int start_transient_service(
         if (r < 0)
                 return r;
 
-        r = sd_bus_message_open_container(m, 'a', "s");
-        if (r < 0)
-                return r;
-
-        STRV_FOREACH(i, argv) {
-                r = sd_bus_message_append(m, "s", *i);
-                if (r < 0)
-                        return r;
-        }
-
-        r = sd_bus_message_close_container(m);
+        r = sd_bus_message_append_strv(m, argv);
         if (r < 0)
                 return r;