core: add transient units

[elogind.git] / src / core / swap.c

diff --git a/src/core/swap.c b/src/core/swap.c
index a0e55a0c03d7f0a55defec6046fcc97876969ede..825503f3dea2909d010111930fb1daf1e8ffd425 100644 (file)
--- a/src/core/swap.c
+++ b/src/core/swap.c
@@ -92,6 +92,7 @@ static void swap_init(Unit *u) {
         s->exec_context.std_output = u->manager->default_std_output;
         s->exec_context.std_error = u->manager->default_std_error;
         kill_context_init(&s->kill_context);
+        cgroup_context_init(&s->cgroup_context);
 
         s->parameters_proc_swaps.priority = s->parameters_fragment.priority = -1;
 
@@ -125,10 +126,12 @@ static void swap_done(Unit *u) {
         free(s->parameters_fragment.what);
         s->parameters_fragment.what = NULL;
 
-        exec_context_done(&s->exec_context);
+        exec_context_done(&s->exec_context, manager_is_reloading_or_reexecuting(u->manager));
         exec_command_done_array(s->exec_command, _SWAP_EXEC_COMMAND_MAX);
         s->control_command = NULL;
 
+        cgroup_context_done(&s->cgroup_context);
+
         swap_unwatch_control_pid(s);
 
         unit_unwatch_timer(u, &s->timer_watch);
@@ -214,7 +217,7 @@ static int swap_add_default_dependencies(Swap *s) {
 
 static int swap_verify(Swap *s) {
         bool b;
-        char _cleanup_free_ *e = NULL;
+        _cleanup_free_ char *e = NULL;
 
         if (UNIT(s)->load_state != UNIT_LOADED)
                   return 0;
@@ -287,7 +290,7 @@ static int swap_load(Unit *u) {
                 if (r < 0)
                         return r;
 
-                r = unit_add_default_cgroups(u);
+                r = unit_add_default_slice(u);
                 if (r < 0)
                         return r;
 
@@ -315,7 +318,7 @@ static int swap_add_one(
                 bool set_flags) {
 
         Unit *u = NULL;
-        char _cleanup_free_ *e = NULL;
+        _cleanup_free_ char *e = NULL;
         char *wp = NULL;
         bool delete = false;
         int r;
@@ -589,6 +592,8 @@ static int swap_spawn(Swap *s, ExecCommand *c, pid_t *_pid) {
         assert(c);
         assert(_pid);
 
+        unit_realize_cgroup(UNIT(s));
+
         r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->timeout_usec, &s->timer_watch);
         if (r < 0)
                 goto fail;
@@ -602,9 +607,8 @@ static int swap_spawn(Swap *s, ExecCommand *c, pid_t *_pid) {
                        true,
                        true,
                        UNIT(s)->manager->confirm_spawn,
-                       UNIT(s)->cgroup_bondings,
-                       UNIT(s)->cgroup_attributes,
-                       NULL,
+                       UNIT(s)->cgroup_mask,
+                       UNIT(s)->cgroup_path,
                        UNIT(s)->id,
                        NULL,
                        &pid);
@@ -632,6 +636,7 @@ static void swap_enter_dead(Swap *s, SwapResult f) {
         if (f != SWAP_SUCCESS)
                 s->result = f;
 
+        exec_context_tmp_dirs_done(&s->exec_context);
         swap_set_state(s, s->result != SWAP_SUCCESS ? SWAP_FAILED : SWAP_DEAD);
 }
 
@@ -831,6 +836,8 @@ static int swap_serialize(Unit *u, FILE *f, FDSet *fds) {
         if (s->control_command_id >= 0)
                 unit_serialize_item(u, f, "control-command", swap_exec_command_to_string(s->control_command_id));
 
+        exec_context_serialize(&s->exec_context, UNIT(s), f);
+
         return 0;
 }
 
@@ -874,26 +881,41 @@ static int swap_deserialize_item(Unit *u, const char *key, const char *value, FD
                         s->control_command_id = id;
                         s->control_command = s->exec_command + id;
                 }
+        } else if (streq(key, "tmp-dir")) {
+                char *t;
+
+                t = strdup(value);
+                if (!t)
+                        return log_oom();
 
+                s->exec_context.tmp_dir = t;
+        } else if (streq(key, "var-tmp-dir")) {
+                char *t;
+
+                t = strdup(value);
+                if (!t)
+                        return log_oom();
+
+                s->exec_context.var_tmp_dir = t;
         } else
                 log_debug_unit(u->id, "Unknown serialization key '%s'", key);
 
         return 0;
 }
 
-static UnitActiveState swap_active_state(Unit *u) {
+_pure_ static UnitActiveState swap_active_state(Unit *u) {
         assert(u);
 
         return state_translation_table[SWAP(u)->state];
 }
 
-static const char *swap_sub_state_to_string(Unit *u) {
+_pure_ static const char *swap_sub_state_to_string(Unit *u) {
         assert(u);
 
         return swap_state_to_string(SWAP(u)->state);
 }
 
-static bool swap_check_gc(Unit *u) {
+_pure_ static bool swap_check_gc(Unit *u) {
         Swap *s = SWAP(u);
 
         assert(s);
@@ -1224,10 +1246,14 @@ static void swap_shutdown(Manager *m) {
 
 static int swap_enumerate(Manager *m) {
         int r;
-        struct epoll_event ev;
         assert(m);
 
         if (!m->proc_swaps) {
+                struct epoll_event ev = {
+                        .events = EPOLLPRI,
+                        .data.ptr = &m->swap_watch,
+                };
+
                 m->proc_swaps = fopen("/proc/swaps", "re");
                 if (!m->proc_swaps)
                         return (errno == ENOENT) ? 0 : -errno;
@@ -1235,10 +1261,6 @@ static int swap_enumerate(Manager *m) {
                 m->swap_watch.type = WATCH_SWAP;
                 m->swap_watch.fd = fileno(m->proc_swaps);
 
-                zero(ev);
-                ev.events = EPOLLPRI;
-                ev.data.ptr = &m->swap_watch;
-
                 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->swap_watch.fd, &ev) < 0)
                         return -errno;
         }
@@ -1305,8 +1327,9 @@ const UnitVTable swap_vtable = {
                 "Swap\0"
                 "Install\0",
 
+        .private_section = "Swap",
         .exec_context_offset = offsetof(Swap, exec_context),
-        .exec_section = "Swap",
+        .cgroup_context_offset = offsetof(Swap, cgroup_context),
 
         .no_alias = true,
         .no_instances = true,
@@ -1340,6 +1363,8 @@ const UnitVTable swap_vtable = {
         .bus_interface = "org.freedesktop.systemd1.Swap",
         .bus_message_handler = bus_swap_message_handler,
         .bus_invalidating_properties =  bus_swap_invalidating_properties,
+        .bus_set_property = bus_swap_set_property,
+        .bus_commit_properties = bus_swap_commit_properties,
 
         .following = swap_following,
         .following_set = swap_following_set,