X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fswap.c;h=ff62b1dc4b3adcc59197fbb2ba3e14ed948b65ad;hp=db0614b9f9a488d8ba2620d638c724a7ef685074;hb=1124fe6f01b1d59d016c238026f20380f38d98dc;hpb=27abbe8251a2614aab549a7a83f752e92d971a6a

diff --git a/src/swap.c b/src/swap.c
index db0614b9f..ff62b1dc4 100644
--- a/src/swap.c
+++ b/src/swap.c
@@ -37,6 +37,7 @@
 #include "special.h"
 #include "bus-errors.h"
 #include "exit-status.h"
+#include "def.h"
 
 static const UnitActiveState state_translation_table[_SWAP_STATE_MAX] = {
         [SWAP_DEAD] = UNIT_INACTIVE,
@@ -61,34 +62,37 @@ static void swap_unset_proc_swaps(Swap *s) {
         /* Remove this unit from the chain of swaps which share the
          * same kernel swap device. */
 
-        first = hashmap_get(s->meta.manager->swaps_by_proc_swaps, s->parameters_proc_swaps.what);
+        first = hashmap_get(UNIT(s)->manager->swaps_by_proc_swaps, s->parameters_proc_swaps.what);
         LIST_REMOVE(Swap, same_proc_swaps, first, s);
 
         if (first)
-                hashmap_remove_and_replace(s->meta.manager->swaps_by_proc_swaps, s->parameters_proc_swaps.what, first->parameters_proc_swaps.what, first);
+                hashmap_remove_and_replace(UNIT(s)->manager->swaps_by_proc_swaps, s->parameters_proc_swaps.what, first->parameters_proc_swaps.what, first);
         else
-                hashmap_remove(s->meta.manager->swaps_by_proc_swaps, s->parameters_proc_swaps.what);
+                hashmap_remove(UNIT(s)->manager->swaps_by_proc_swaps, s->parameters_proc_swaps.what);
 
         free(s->parameters_proc_swaps.what);
         s->parameters_proc_swaps.what = NULL;
 }
 
- static void swap_init(Unit *u) {
+static void swap_init(Unit *u) {
         Swap *s = SWAP(u);
 
         assert(s);
-        assert(s->meta.load_state == UNIT_STUB);
+        assert(UNIT(s)->load_state == UNIT_STUB);
 
         s->timeout_usec = DEFAULT_TIMEOUT_USEC;
 
         exec_context_init(&s->exec_context);
-        s->exec_context.std_output = EXEC_OUTPUT_KMSG;
+        s->exec_context.std_output = u->manager->default_std_output;
+        s->exec_context.std_error = u->manager->default_std_error;
 
         s->parameters_etc_fstab.priority = s->parameters_proc_swaps.priority = s->parameters_fragment.priority = -1;
 
         s->timer_watch.type = WATCH_INVALID;
 
         s->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
+
+        UNIT(s)->ignore_on_isolate = true;
 }
 
 static void swap_unwatch_control_pid(Swap *s) {
@@ -130,8 +134,8 @@ int swap_add_one_mount_link(Swap *s, Mount *m) {
         assert(s);
         assert(m);
 
-        if (s->meta.load_state != UNIT_LOADED ||
-            m->meta.load_state != UNIT_LOADED)
+        if (UNIT(s)->load_state != UNIT_LOADED ||
+            UNIT(m)->load_state != UNIT_LOADED)
                 return 0;
 
         if (is_device_path(s->what))
@@ -147,12 +151,12 @@ int swap_add_one_mount_link(Swap *s, Mount *m) {
 }
 
 static int swap_add_mount_links(Swap *s) {
-        Meta *other;
+        Unit *other;
         int r;
 
         assert(s);
 
-        LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_MOUNT])
+        LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_MOUNT])
                 if ((r = swap_add_one_mount_link(s, (Mount*) other)) < 0)
                         return r;
 
@@ -173,13 +177,14 @@ static int swap_add_target_links(Swap *s) {
         else
                 return 0;
 
-        if ((r = manager_load_unit(s->meta.manager, SPECIAL_SWAP_TARGET, NULL, NULL, &tu)) < 0)
+        if ((r = manager_load_unit(UNIT(s)->manager, SPECIAL_SWAP_TARGET, NULL, NULL, &tu)) < 0)
                 return r;
 
         if (!p->noauto &&
-            (p->handle || s->meta.manager->swap_auto) &&
+            !p->nofail &&
+            (p->handle || UNIT(s)->manager->swap_auto) &&
             s->from_etc_fstab &&
-            s->meta.manager->running_as == MANAGER_SYSTEM)
+            UNIT(s)->manager->running_as == MANAGER_SYSTEM)
                 if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(s), true)) < 0)
                         return r;
 
@@ -204,7 +209,7 @@ static int swap_add_device_links(Swap *s) {
         if (is_device_path(s->what))
                 return unit_add_node_link(UNIT(s), s->what,
                                           !p->noauto && p->nofail &&
-                                          s->meta.manager->running_as == MANAGER_SYSTEM);
+                                          UNIT(s)->manager->running_as == MANAGER_SYSTEM);
         else
                 /* File based swap devices need to be ordered after
                  * remount-rootfs.service, since they might need a
@@ -217,7 +222,7 @@ static int swap_add_default_dependencies(Swap *s) {
 
         assert(s);
 
-        if (s->meta.manager->running_as == MANAGER_SYSTEM) {
+        if (UNIT(s)->manager->running_as == MANAGER_SYSTEM) {
 
                 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true)) < 0)
                         return r;
@@ -230,7 +235,7 @@ static int swap_verify(Swap *s) {
         bool b;
         char *e;
 
-        if (s->meta.load_state != UNIT_LOADED)
+        if (UNIT(s)->load_state != UNIT_LOADED)
                   return 0;
 
         if (!(e = unit_name_from_path(s->what, ".swap")))
@@ -240,12 +245,12 @@ static int swap_verify(Swap *s) {
         free(e);
 
         if (!b) {
-                log_error("%s: Value of \"What\" and unit name do not match, not loading.\n", s->meta.id);
+                log_error("%s: Value of \"What\" and unit name do not match, not loading.\n", UNIT(s)->id);
                 return -EINVAL;
         }
 
         if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
-                log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
+                log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id);
                 return -EINVAL;
         }
 
@@ -257,17 +262,17 @@ static int swap_load(Unit *u) {
         Swap *s = SWAP(u);
 
         assert(s);
-        assert(u->meta.load_state == UNIT_STUB);
+        assert(u->load_state == UNIT_STUB);
 
         /* Load a .swap file */
         if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
                 return r;
 
-        if (u->meta.load_state == UNIT_LOADED) {
+        if (u->load_state == UNIT_LOADED) {
                 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
                         return r;
 
-                if (s->meta.fragment_path)
+                if (UNIT(s)->fragment_path)
                         s->from_fragment = true;
 
                 if (!s->what) {
@@ -278,7 +283,7 @@ static int swap_load(Unit *u) {
                         else if (s->parameters_proc_swaps.what)
                                 s->what = strdup(s->parameters_proc_swaps.what);
                         else
-                                s->what = unit_name_to_path(u->meta.id);
+                                s->what = unit_name_to_path(u->id);
 
                         if (!s->what)
                                 return -ENOMEM;
@@ -286,7 +291,7 @@ static int swap_load(Unit *u) {
 
                 path_kill_slashes(s->what);
 
-                if (!s->meta.description)
+                if (!UNIT(s)->description)
                         if ((r = unit_set_description(u, s->what)) < 0)
                                 return r;
 
@@ -302,7 +307,7 @@ static int swap_load(Unit *u) {
                 if ((r = unit_add_default_cgroups(u)) < 0)
                         return r;
 
-                if (s->meta.default_dependencies)
+                if (UNIT(s)->default_dependencies)
                         if ((r = swap_add_default_dependencies(s)) < 0)
                                 return r;
         }
@@ -329,7 +334,8 @@ int swap_add_one(
         assert(m);
         assert(what);
 
-        if (!(e = unit_name_from_path(what, ".swap")))
+        e = unit_name_from_path(what, ".swap");
+        if (!e)
                 return -ENOMEM;
 
         u = manager_get_unit(m, e);
@@ -343,15 +349,18 @@ int swap_add_one(
         if (!u) {
                 delete = true;
 
-                if (!(u = unit_new(m))) {
+                u = unit_new(m, sizeof(Swap));
+                if (!u) {
                         free(e);
                         return -ENOMEM;
                 }
 
-                if ((r = unit_add_name(u, e)) < 0)
+                r = unit_add_name(u, e);
+                if (r < 0)
                         goto fail;
 
-                if (!(SWAP(u)->what = strdup(what))) {
+                SWAP(u)->what = strdup(what);
+                if (!SWAP(u)->what) {
                         r = -ENOMEM;
                         goto fail;
                 }
@@ -501,7 +510,7 @@ static void swap_set_state(Swap *s, SwapState state) {
 
         if (state != old_state)
                 log_debug("%s changed %s -> %s",
-                          s->meta.id,
+                          UNIT(s)->id,
                           swap_state_to_string(old_state),
                           swap_state_to_string(state));
 
@@ -603,12 +612,13 @@ static int swap_spawn(Swap *s, ExecCommand *c, pid_t *_pid) {
                             NULL,
                             &s->exec_context,
                             NULL, 0,
-                            s->meta.manager->environment,
+                            UNIT(s)->manager->environment,
                             true,
                             true,
                             true,
-                            s->meta.manager->confirm_spawn,
-                            s->meta.cgroup_bondings,
+                            UNIT(s)->manager->confirm_spawn,
+                            UNIT(s)->cgroup_bondings,
+                            UNIT(s)->cgroup_attributes,
                             &pid)) < 0)
                 goto fail;
 
@@ -659,9 +669,7 @@ static void swap_enter_signal(Swap *s, SwapState state, bool success) {
                            state == SWAP_DEACTIVATING_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
 
                 if (s->control_pid > 0) {
-                        if (kill(s->exec_context.kill_mode == KILL_PROCESS_GROUP ?
-                                 -s->control_pid :
-                                 s->control_pid, sig) < 0 && errno != ESRCH)
+                        if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
 
                                 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
                         else
@@ -680,13 +688,14 @@ static void swap_enter_signal(Swap *s, SwapState state, bool success) {
                                 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
                                         goto fail;
 
-                        if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, pid_set)) < 0) {
+                        if ((r = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, sig, true, pid_set)) < 0) {
                                 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
                                         log_warning("Failed to kill control group: %s", strerror(-r));
                         } else if (r > 0)
                                 wait_for_exit = true;
 
                         set_free(pid_set);
+                        pid_set = NULL;
                 }
         }
 
@@ -701,7 +710,7 @@ static void swap_enter_signal(Swap *s, SwapState state, bool success) {
         return;
 
 fail:
-        log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
+        log_warning("%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
 
         swap_enter_dead(s, false);
 
@@ -757,7 +766,7 @@ static void swap_enter_activating(Swap *s) {
         return;
 
 fail:
-        log_warning("%s failed to run 'swapon' task: %s", s->meta.id, strerror(-r));
+        log_warning("%s failed to run 'swapon' task: %s", UNIT(s)->id, strerror(-r));
         swap_enter_dead(s, false);
 }
 
@@ -789,7 +798,7 @@ static void swap_enter_deactivating(Swap *s, bool success) {
         return;
 
 fail:
-        log_warning("%s failed to run 'swapoff' task: %s", s->meta.id, strerror(-r));
+        log_warning("%s failed to run 'swapoff' task: %s", UNIT(s)->id, strerror(-r));
         swap_enter_active(s, false);
 }
 
@@ -937,13 +946,13 @@ static void swap_sigchld_event(Unit *u, pid_t pid, int code, int status) {
         s->failure = s->failure || !success;
 
         if (s->control_command) {
-                exec_status_exit(&s->control_command->exec_status, pid, code, status, s->exec_context.utmp_id);
+                exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
                 s->control_command = NULL;
                 s->control_command_id = _SWAP_EXEC_COMMAND_INVALID;
         }
 
         log_full(success ? LOG_DEBUG : LOG_NOTICE,
-                 "%s swap process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
+                 "%s swap process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status);
 
         switch (s->state) {
 
@@ -976,7 +985,7 @@ static void swap_sigchld_event(Unit *u, pid_t pid, int code, int status) {
 
         /* Request a reload of /proc/swaps, so that following units
          * can follow our state change */
-        u->meta.manager->request_reload = true;
+        u->manager->request_reload = true;
 }
 
 static void swap_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
@@ -989,38 +998,38 @@ static void swap_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
         switch (s->state) {
 
         case SWAP_ACTIVATING:
-                log_warning("%s activation timed out. Stopping.", u->meta.id);
+                log_warning("%s activation timed out. Stopping.", u->id);
                 swap_enter_signal(s, SWAP_ACTIVATING_SIGTERM, false);
                 break;
 
         case SWAP_DEACTIVATING:
-                log_warning("%s deactivation timed out. Stopping.", u->meta.id);
+                log_warning("%s deactivation timed out. Stopping.", u->id);
                 swap_enter_signal(s, SWAP_DEACTIVATING_SIGTERM, false);
                 break;
 
         case SWAP_ACTIVATING_SIGTERM:
                 if (s->exec_context.send_sigkill) {
-                        log_warning("%s activation timed out. Killing.", u->meta.id);
+                        log_warning("%s activation timed out. Killing.", u->id);
                         swap_enter_signal(s, SWAP_ACTIVATING_SIGKILL, false);
                 } else {
-                        log_warning("%s activation timed out. Skipping SIGKILL. Ignoring.", u->meta.id);
+                        log_warning("%s activation timed out. Skipping SIGKILL. Ignoring.", u->id);
                         swap_enter_dead(s, false);
                 }
                 break;
 
         case SWAP_DEACTIVATING_SIGTERM:
                 if (s->exec_context.send_sigkill) {
-                        log_warning("%s deactivation timed out. Killing.", u->meta.id);
+                        log_warning("%s deactivation timed out. Killing.", u->id);
                         swap_enter_signal(s, SWAP_DEACTIVATING_SIGKILL, false);
                 } else {
-                        log_warning("%s deactivation timed out. Skipping SIGKILL. Ignoring.", u->meta.id);
+                        log_warning("%s deactivation timed out. Skipping SIGKILL. Ignoring.", u->id);
                         swap_enter_dead(s, false);
                 }
                 break;
 
         case SWAP_ACTIVATING_SIGKILL:
         case SWAP_DEACTIVATING_SIGKILL:
-                log_warning("%s swap process still around after SIGKILL. Ignoring.", u->meta.id);
+                log_warning("%s swap process still around after SIGKILL. Ignoring.", u->id);
                 swap_enter_dead(s, false);
                 break;
 
@@ -1087,7 +1096,7 @@ int swap_dispatch_reload(Manager *m) {
 }
 
 int swap_fd_event(Manager *m, int events) {
-        Meta *meta;
+        Unit *meta;
         int r;
 
         assert(m);
@@ -1097,7 +1106,7 @@ int swap_fd_event(Manager *m, int events) {
                 log_error("Failed to reread /proc/swaps: %s", strerror(-r));
 
                 /* Reset flags, just in case, for late calls */
-                LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_SWAP]) {
+                LIST_FOREACH(units_by_type, meta, m->units_by_type[UNIT_SWAP]) {
                         Swap *swap = (Swap*) meta;
 
                         swap->is_active = swap->just_activated = false;
@@ -1108,7 +1117,7 @@ int swap_fd_event(Manager *m, int events) {
 
         manager_dispatch_load_queue(m);
 
-        LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_SWAP]) {
+        LIST_FOREACH(units_by_type, meta, m->units_by_type[UNIT_SWAP]) {
                 Swap *swap = (Swap*) meta;
 
                 if (!swap->is_active) {
@@ -1234,7 +1243,7 @@ static int swap_enumerate(Manager *m) {
 
         if (!m->proc_swaps) {
                 if (!(m->proc_swaps = fopen("/proc/swaps", "re")))
-                        return -errno;
+                        return (errno == ENOENT) ? 0 : -errno;
 
                 m->swap_watch.type = WATCH_SWAP;
                 m->swap_watch.fd = fileno(m->proc_swaps);
@@ -1275,19 +1284,20 @@ static int swap_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *
 
         if (who == KILL_MAIN) {
                 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "Swap units have no main processes");
-                return -EINVAL;
+                return -ESRCH;
         }
 
         if (s->control_pid <= 0 && who == KILL_CONTROL) {
                 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
-                return -ENOENT;
+                return -ESRCH;
         }
 
-        if (s->control_pid > 0)
-                if (kill(mode == KILL_PROCESS_GROUP ? -s->control_pid : s->control_pid, signo) < 0)
-                        r = -errno;
+        if (who == KILL_CONTROL || who == KILL_ALL)
+                if (s->control_pid > 0)
+                        if (kill(s->control_pid, signo) < 0)
+                                r = -errno;
 
-        if (mode == KILL_CONTROL_GROUP) {
+        if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
                 int q;
 
                 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
@@ -1300,8 +1310,8 @@ static int swap_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *
                                 goto finish;
                         }
 
-                if ((q = cgroup_bonding_kill_list(s->meta.cgroup_bondings, signo, pid_set)) < 0)
-                        if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
+                if ((q = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, signo, false, pid_set)) < 0)
+                        if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
                                 r = q;
         }
 
@@ -1335,10 +1345,14 @@ DEFINE_STRING_TABLE_LOOKUP(swap_exec_command, SwapExecCommand);
 
 const UnitVTable swap_vtable = {
         .suffix = ".swap",
+        .object_size = sizeof(Swap),
+        .sections =
+                "Unit\0"
+                "Swap\0"
+                "Install\0",
 
         .no_alias = true,
         .no_instances = true,
-        .no_isolate = true,
         .show_status = true,
 
         .init = swap_init,