#include "unit-name.h"
#include "dbus-swap.h"
#include "special.h"
-#include "bus-errors.h"
+#include "bus-common-errors.h"
#include "exit-status.h"
#include "def.h"
#include "path-util.h"
+#include "virt.h"
+#include "udev-util.h"
+#include "fstab-util.h"
static const UnitActiveState state_translation_table[_SWAP_STATE_MAX] = {
[SWAP_DEAD] = UNIT_INACTIVE,
[SWAP_ACTIVATING] = UNIT_ACTIVATING,
+ [SWAP_ACTIVATING_DONE] = UNIT_ACTIVE,
[SWAP_ACTIVE] = UNIT_ACTIVE,
[SWAP_DEACTIVATING] = UNIT_DEACTIVATING,
[SWAP_ACTIVATING_SIGTERM] = UNIT_DEACTIVATING,
[SWAP_FAILED] = UNIT_FAILED
};
+static int swap_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata);
+static int swap_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata);
+
static void swap_unset_proc_swaps(Swap *s) {
+ assert(s);
+
+ if (!s->from_proc_swaps)
+ return;
+
+ free(s->parameters_proc_swaps.what);
+ s->parameters_proc_swaps.what = NULL;
+
+ s->from_proc_swaps = false;
+}
+
+static int swap_set_devnode(Swap *s, const char *devnode) {
+ Hashmap *swaps;
Swap *first;
+ int r;
assert(s);
- if (!s->parameters_proc_swaps.what)
- return;
+ r = hashmap_ensure_allocated(&UNIT(s)->manager->swaps_by_devnode, &string_hash_ops);
+ if (r < 0)
+ return r;
- /* Remove this unit from the chain of swaps which share the
- * same kernel swap device. */
+ swaps = UNIT(s)->manager->swaps_by_devnode;
- first = hashmap_get(UNIT(s)->manager->swaps_by_proc_swaps, s->parameters_proc_swaps.what);
- LIST_REMOVE(Swap, same_proc_swaps, first, s);
+ if (s->devnode) {
+ first = hashmap_get(swaps, s->devnode);
- if (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(UNIT(s)->manager->swaps_by_proc_swaps, s->parameters_proc_swaps.what);
+ LIST_REMOVE(same_devnode, first, s);
+ if (first)
+ hashmap_replace(swaps, first->devnode, first);
+ else
+ hashmap_remove(swaps, s->devnode);
- free(s->parameters_proc_swaps.what);
- s->parameters_proc_swaps.what = NULL;
+ free(s->devnode);
+ s->devnode = NULL;
+ }
+
+ if (devnode) {
+ s->devnode = strdup(devnode);
+ if (!s->devnode)
+ return -ENOMEM;
+
+ first = hashmap_get(swaps, s->devnode);
+ LIST_PREPEND(same_devnode, first, s);
+
+ return hashmap_replace(swaps, first->devnode, first);
+ }
+
+ return 0;
}
static void swap_init(Unit *u) {
assert(s);
assert(UNIT(s)->load_state == UNIT_STUB);
- s->timeout_usec = DEFAULT_TIMEOUT_USEC;
+ s->timeout_usec = u->manager->default_timeout_start_usec;
- exec_context_init(&s->exec_context);
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->parameters_proc_swaps.priority = s->parameters_fragment.priority = -1;
s->control_command_id = _SWAP_EXEC_COMMAND_INVALID;
- UNIT(s)->ignore_on_isolate = true;
+ u->ignore_on_isolate = true;
}
static void swap_unwatch_control_pid(Swap *s) {
assert(s);
swap_unset_proc_swaps(s);
+ swap_set_devnode(s, NULL);
free(s->what);
s->what = NULL;
- free(s->parameters_etc_fstab.what);
free(s->parameters_fragment.what);
- s->parameters_etc_fstab.what = s->parameters_fragment.what = NULL;
+ s->parameters_fragment.what = NULL;
- exec_context_done(&s->exec_context);
+ free(s->parameters_fragment.options);
+ s->parameters_fragment.options = NULL;
+
+ s->exec_runtime = exec_runtime_unref(s->exec_runtime);
exec_command_done_array(s->exec_command, _SWAP_EXEC_COMMAND_MAX);
s->control_command = NULL;
swap_unwatch_control_pid(s);
- unit_unwatch_timer(u, &s->timer_watch);
-}
-
-int swap_add_one_mount_link(Swap *s, Mount *m) {
- int r;
-
- assert(s);
- assert(m);
-
- if (UNIT(s)->load_state != UNIT_LOADED ||
- UNIT(m)->load_state != UNIT_LOADED)
- return 0;
-
- if (is_device_path(s->what))
- return 0;
-
- if (!path_startswith(s->what, m->where))
- return 0;
-
- if ((r = unit_add_two_dependencies(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true)) < 0)
- return r;
-
- return 0;
+ s->timer_event_source = sd_event_source_unref(s->timer_event_source);
}
-static int swap_add_mount_links(Swap *s) {
- Unit *other;
+static int swap_arm_timer(Swap *s) {
int r;
assert(s);
- 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;
-
- return 0;
-}
-
-static int swap_add_target_links(Swap *s) {
- Unit *tu;
- SwapParameters *p;
- int r;
-
- assert(s);
-
- if (s->from_fragment)
- p = &s->parameters_fragment;
- else if (s->from_etc_fstab)
- p = &s->parameters_etc_fstab;
- else
+ if (s->timeout_usec <= 0) {
+ s->timer_event_source = sd_event_source_unref(s->timer_event_source);
return 0;
+ }
- if ((r = manager_load_unit(UNIT(s)->manager, SPECIAL_SWAP_TARGET, NULL, NULL, &tu)) < 0)
- return r;
-
- if (!p->noauto &&
- !p->nofail &&
- s->from_etc_fstab &&
- UNIT(s)->manager->running_as == MANAGER_SYSTEM)
- if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(s), true)) < 0)
+ if (s->timer_event_source) {
+ r = sd_event_source_set_time(s->timer_event_source, now(CLOCK_MONOTONIC) + s->timeout_usec);
+ if (r < 0)
return r;
- return unit_add_dependency(UNIT(s), UNIT_BEFORE, tu, true);
+ return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT);
+ }
+
+ return sd_event_add_time(
+ UNIT(s)->manager->event,
+ &s->timer_event_source,
+ CLOCK_MONOTONIC,
+ now(CLOCK_MONOTONIC) + s->timeout_usec, 0,
+ swap_dispatch_timer, s);
}
static int swap_add_device_links(Swap *s) {
- SwapParameters *p;
-
assert(s);
if (!s->what)
return 0;
- if (s->from_fragment)
- p = &s->parameters_fragment;
- else if (s->from_etc_fstab)
- p = &s->parameters_etc_fstab;
- else
+ if (!s->from_fragment)
return 0;
if (is_device_path(s->what))
- return unit_add_node_link(UNIT(s), s->what,
- !p->noauto && p->nofail &&
- UNIT(s)->manager->running_as == MANAGER_SYSTEM);
+ return unit_add_node_link(UNIT(s), s->what, UNIT(s)->manager->running_as == SYSTEMD_SYSTEM);
else
/* File based swap devices need to be ordered after
* systemd-remount-fs.service, since they might need a
}
static int swap_add_default_dependencies(Swap *s) {
- int r;
-
assert(s);
- if (UNIT(s)->manager->running_as == MANAGER_SYSTEM) {
+ if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM)
+ return 0;
- if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true)) < 0)
- return r;
- }
+ if (detect_container(NULL) > 0)
+ return 0;
- return 0;
+ return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true);
}
static int swap_verify(Swap *s) {
bool b;
- char *e;
+ _cleanup_free_ char *e = NULL;
if (UNIT(s)->load_state != UNIT_LOADED)
- return 0;
+ return 0;
- if (!(e = unit_name_from_path(s->what, ".swap")))
- return -ENOMEM;
+ e = unit_name_from_path(s->what, ".swap");
+ if (!e)
+ return log_oom();
b = unit_has_name(UNIT(s), e);
- free(e);
-
if (!b) {
- log_error("%s: Value of \"What\" and unit name do not match, not loading.\n", UNIT(s)->id);
+ log_unit_error(UNIT(s)->id, "%s: Value of \"What\" and unit name do not match, not loading.", 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.", UNIT(s)->id);
+ if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) {
+ log_unit_error(UNIT(s)->id, "%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing to load.", UNIT(s)->id);
return -EINVAL;
}
return 0;
}
+static int swap_load_devnode(Swap *s) {
+ _cleanup_udev_device_unref_ struct udev_device *d = NULL;
+ struct stat st;
+ const char *p;
+
+ assert(s);
+
+ if (stat(s->what, &st) < 0 || !S_ISBLK(st.st_mode))
+ return 0;
+
+ d = udev_device_new_from_devnum(UNIT(s)->manager->udev, 'b', st.st_rdev);
+ if (!d)
+ return 0;
+
+ p = udev_device_get_devnode(d);
+ if (!p)
+ return 0;
+
+ return swap_set_devnode(s, p);
+}
+
static int swap_load(Unit *u) {
int r;
Swap *s = SWAP(u);
assert(u->load_state == UNIT_STUB);
/* Load a .swap file */
- if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
+ r = unit_load_fragment_and_dropin_optional(u);
+ if (r < 0)
return r;
if (u->load_state == UNIT_LOADED) {
- if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
- return r;
if (UNIT(s)->fragment_path)
s->from_fragment = true;
if (!s->what) {
if (s->parameters_fragment.what)
s->what = strdup(s->parameters_fragment.what);
- else if (s->parameters_etc_fstab.what)
- s->what = strdup(s->parameters_etc_fstab.what);
else if (s->parameters_proc_swaps.what)
s->what = strdup(s->parameters_proc_swaps.what);
else
path_kill_slashes(s->what);
- if (!UNIT(s)->description)
- if ((r = unit_set_description(u, s->what)) < 0)
+ if (!UNIT(s)->description) {
+ r = unit_set_description(u, s->what);
+ if (r < 0)
return r;
+ }
+
+ r = unit_require_mounts_for(UNIT(s), s->what);
+ if (r < 0)
+ return r;
- if ((r = swap_add_device_links(s)) < 0)
+ r = swap_add_device_links(s);
+ if (r < 0)
+ return r;
+
+ r = swap_load_devnode(s);
+ if (r < 0)
return r;
- if ((r = swap_add_mount_links(s)) < 0)
+ r = unit_patch_contexts(u);
+ if (r < 0)
return r;
- if ((r = swap_add_target_links(s)) < 0)
+ r = unit_add_exec_dependencies(u, &s->exec_context);
+ if (r < 0)
return r;
- if ((r = unit_add_default_cgroups(u)) < 0)
+ r = unit_add_default_slice(u, &s->cgroup_context);
+ if (r < 0)
return r;
- if (UNIT(s)->default_dependencies)
- if ((r = swap_add_default_dependencies(s)) < 0)
+ if (UNIT(s)->default_dependencies) {
+ r = swap_add_default_dependencies(s);
+ if (r < 0)
return r;
+ }
}
return swap_verify(s);
}
-int swap_add_one(
+static int swap_add_one(
Manager *m,
const char *what,
const char *what_proc_swaps,
int priority,
- bool noauto,
- bool nofail,
bool set_flags) {
- Unit *u = NULL;
- char *e = NULL, *wp = NULL;
+ _cleanup_free_ char *e = NULL;
bool delete = false;
+ Unit *u = NULL;
int r;
SwapParameters *p;
assert(m);
assert(what);
+ assert(what_proc_swaps);
e = unit_name_from_path(what, ".swap");
if (!e)
- return -ENOMEM;
+ return log_oom();
u = manager_get_unit(m, e);
- if (what_proc_swaps &&
- u &&
+ if (u &&
SWAP(u)->from_proc_swaps &&
!path_equal(SWAP(u)->parameters_proc_swaps.what, what_proc_swaps))
return -EEXIST;
delete = true;
u = unit_new(m, sizeof(Swap));
- if (!u) {
- free(e);
- return -ENOMEM;
- }
+ if (!u)
+ return log_oom();
r = unit_add_name(u, e);
if (r < 0)
SWAP(u)->what = strdup(what);
if (!SWAP(u)->what) {
- r = -ENOMEM;
+ r = log_oom();
goto fail;
}
} else
delete = false;
- if (what_proc_swaps) {
- Swap *first;
-
- p = &SWAP(u)->parameters_proc_swaps;
+ p = &SWAP(u)->parameters_proc_swaps;
+ if (!p->what) {
+ p->what = strdup(what_proc_swaps);
if (!p->what) {
- if (!(wp = strdup(what_proc_swaps))) {
- r = -ENOMEM;
- goto fail;
- }
-
- if (!m->swaps_by_proc_swaps)
- if (!(m->swaps_by_proc_swaps = hashmap_new(string_hash_func, string_compare_func))) {
- r = -ENOMEM;
- goto fail;
- }
-
- free(p->what);
- p->what = wp;
-
- first = hashmap_get(m->swaps_by_proc_swaps, wp);
- LIST_PREPEND(Swap, same_proc_swaps, first, SWAP(u));
-
- if ((r = hashmap_replace(m->swaps_by_proc_swaps, wp, first)) < 0)
- goto fail;
- }
-
- if (set_flags) {
- SWAP(u)->is_active = true;
- SWAP(u)->just_activated = !SWAP(u)->from_proc_swaps;
- }
-
- SWAP(u)->from_proc_swaps = true;
-
- } else {
- p = &SWAP(u)->parameters_etc_fstab;
-
- if (!(wp = strdup(what))) {
r = -ENOMEM;
goto fail;
}
+ }
- free(p->what);
- p->what = wp;
-
- SWAP(u)->from_etc_fstab = true;
+ if (set_flags) {
+ SWAP(u)->is_active = true;
+ SWAP(u)->just_activated = !SWAP(u)->from_proc_swaps;
}
+ SWAP(u)->from_proc_swaps = true;
+
p->priority = priority;
- p->noauto = noauto;
- p->nofail = nofail;
unit_add_to_dbus_queue(u);
- free(e);
-
return 0;
fail:
- log_warning("Failed to load swap unit: %s", strerror(-r));
-
- free(wp);
- free(e);
+ log_unit_warning_errno(e, r, "Failed to load swap unit: %m");
if (delete && u)
unit_free(u);
}
static int swap_process_new_swap(Manager *m, const char *device, int prio, bool set_flags) {
+ _cleanup_udev_device_unref_ struct udev_device *d = NULL;
+ struct udev_list_entry *item = NULL, *first = NULL;
+ const char *dn;
struct stat st;
- int r = 0, k;
+ int r;
assert(m);
- if (stat(device, &st) >= 0 && S_ISBLK(st.st_mode)) {
- struct udev_device *d;
- const char *dn;
- struct udev_list_entry *item = NULL, *first = NULL;
+ r = swap_add_one(m, device, device, prio, set_flags);
+ if (r < 0)
+ return r;
- /* So this is a proper swap device. Create swap units
- * for all names this swap device is known under */
+ /* If this is a block device, then let's add duplicates for
+ * all other names of this block device */
+ if (stat(device, &st) < 0 || !S_ISBLK(st.st_mode))
+ return 0;
- if (!(d = udev_device_new_from_devnum(m->udev, 'b', st.st_rdev)))
- return -ENOMEM;
+ d = udev_device_new_from_devnum(m->udev, 'b', st.st_rdev);
+ if (!d)
+ return 0;
- dn = udev_device_get_devnode(d);
- if (dn)
- r = swap_add_one(m, dn, device, prio, false, false, set_flags);
+ /* Add the main device node */
+ dn = udev_device_get_devnode(d);
+ if (dn && !streq(dn, device))
+ swap_add_one(m, dn, device, prio, set_flags);
- /* Add additional units for all symlinks */
- first = udev_device_get_devlinks_list_entry(d);
- udev_list_entry_foreach(item, first) {
- const char *p;
+ /* Add additional units for all symlinks */
+ first = udev_device_get_devlinks_list_entry(d);
+ udev_list_entry_foreach(item, first) {
+ const char *p;
- /* Don't bother with the /dev/block links */
- p = udev_list_entry_get_name(item);
+ /* Don't bother with the /dev/block links */
+ p = udev_list_entry_get_name(item);
- if (path_startswith(p, "/dev/block/"))
- continue;
+ if (streq(p, device))
+ continue;
- if (stat(p, &st) >= 0)
- if ((!S_ISBLK(st.st_mode)) || st.st_rdev != udev_device_get_devnum(d))
- continue;
+ if (path_startswith(p, "/dev/block/"))
+ continue;
- k = swap_add_one(m, p, device, prio, false, false, set_flags);
- if (k < 0)
- r = k;
- }
+ if (stat(p, &st) >= 0)
+ if (!S_ISBLK(st.st_mode) ||
+ st.st_rdev != udev_device_get_devnum(d))
+ continue;
- udev_device_unref(d);
+ swap_add_one(m, p, device, prio, set_flags);
}
- k = swap_add_one(m, device, device, prio, false, false, set_flags);
- if (k < 0)
- r = k;
-
return r;
}
if (state != SWAP_ACTIVATING &&
state != SWAP_ACTIVATING_SIGTERM &&
state != SWAP_ACTIVATING_SIGKILL &&
+ state != SWAP_ACTIVATING_DONE &&
state != SWAP_DEACTIVATING &&
state != SWAP_DEACTIVATING_SIGTERM &&
state != SWAP_DEACTIVATING_SIGKILL) {
- unit_unwatch_timer(UNIT(s), &s->timer_watch);
+ s->timer_event_source = sd_event_source_unref(s->timer_event_source);
swap_unwatch_control_pid(s);
s->control_command = NULL;
s->control_command_id = _SWAP_EXEC_COMMAND_INVALID;
}
if (state != old_state)
- log_debug("%s changed %s -> %s",
- UNIT(s)->id,
- swap_state_to_string(old_state),
- swap_state_to_string(state));
+ log_unit_debug(UNIT(s)->id,
+ "%s changed %s -> %s",
+ UNIT(s)->id,
+ swap_state_to_string(old_state),
+ swap_state_to_string(state));
unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], true);
}
else if (s->from_proc_swaps)
new_state = SWAP_ACTIVE;
- if (new_state != s->state) {
+ if (new_state == s->state)
+ return 0;
- if (new_state == SWAP_ACTIVATING ||
- new_state == SWAP_ACTIVATING_SIGTERM ||
- new_state == SWAP_ACTIVATING_SIGKILL ||
- new_state == SWAP_DEACTIVATING ||
- new_state == SWAP_DEACTIVATING_SIGTERM ||
- new_state == SWAP_DEACTIVATING_SIGKILL) {
+ if (new_state == SWAP_ACTIVATING ||
+ new_state == SWAP_ACTIVATING_SIGTERM ||
+ new_state == SWAP_ACTIVATING_SIGKILL ||
+ new_state == SWAP_ACTIVATING_DONE ||
+ new_state == SWAP_DEACTIVATING ||
+ new_state == SWAP_DEACTIVATING_SIGTERM ||
+ new_state == SWAP_DEACTIVATING_SIGKILL) {
- if (s->control_pid <= 0)
- return -EBADMSG;
+ if (s->control_pid <= 0)
+ return -EBADMSG;
- if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
- return r;
-
- if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
- return r;
- }
+ r = unit_watch_pid(UNIT(s), s->control_pid);
+ if (r < 0)
+ return r;
- swap_set_state(s, new_state);
+ r = swap_arm_timer(s);
+ if (r < 0)
+ return r;
}
+ swap_set_state(s, new_state);
return 0;
}
else if (s->from_fragment)
p = &s->parameters_fragment;
else
- p = &s->parameters_etc_fstab;
+ p = NULL;
fprintf(f,
"%sSwap State: %s\n"
"%sResult: %s\n"
"%sWhat: %s\n"
- "%sPriority: %i\n"
- "%sNoAuto: %s\n"
- "%sNoFail: %s\n"
- "%sFrom /etc/fstab: %s\n"
"%sFrom /proc/swaps: %s\n"
"%sFrom fragment: %s\n",
prefix, swap_state_to_string(s->state),
prefix, swap_result_to_string(s->result),
prefix, s->what,
- prefix, p->priority,
- prefix, yes_no(p->noauto),
- prefix, yes_no(p->nofail),
- prefix, yes_no(s->from_etc_fstab),
prefix, yes_no(s->from_proc_swaps),
prefix, yes_no(s->from_fragment));
+ if (s->devnode)
+ fprintf(f, "%sDevice Node: %s\n", prefix, s->devnode);
+
+ if (p)
+ fprintf(f,
+ "%sPriority: %i\n"
+ "%sOptions: %s\n",
+ prefix, p->priority,
+ prefix, strempty(p->options));
+
if (s->control_pid > 0)
fprintf(f,
- "%sControl PID: %lu\n",
- prefix, (unsigned long) s->control_pid);
+ "%sControl PID: "PID_FMT"\n",
+ prefix, s->control_pid);
exec_context_dump(&s->exec_context, f, prefix);
+ kill_context_dump(&s->kill_context, f, prefix);
}
static int swap_spawn(Swap *s, ExecCommand *c, pid_t *_pid) {
pid_t pid;
int r;
+ ExecParameters exec_params = {
+ .apply_permissions = true,
+ .apply_chroot = true,
+ .apply_tty_stdin = true,
+ };
assert(s);
assert(c);
assert(_pid);
- if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
+ unit_realize_cgroup(UNIT(s));
+
+ r = unit_setup_exec_runtime(UNIT(s));
+ if (r < 0)
goto fail;
- if ((r = exec_spawn(c,
- NULL,
- &s->exec_context,
- NULL, 0,
- UNIT(s)->manager->environment,
- true,
- true,
- true,
- UNIT(s)->manager->confirm_spawn,
- UNIT(s)->cgroup_bondings,
- UNIT(s)->cgroup_attributes,
- NULL,
- NULL,
- &pid)) < 0)
+ r = swap_arm_timer(s);
+ if (r < 0)
+ goto fail;
+
+ exec_params.environment = UNIT(s)->manager->environment;
+ exec_params.confirm_spawn = UNIT(s)->manager->confirm_spawn;
+ exec_params.cgroup_supported = UNIT(s)->manager->cgroup_supported;
+ exec_params.cgroup_path = UNIT(s)->cgroup_path;
+ exec_params.cgroup_delegate = s->cgroup_context.delegate;
+ exec_params.runtime_prefix = manager_get_runtime_prefix(UNIT(s)->manager);
+ exec_params.unit_id = UNIT(s)->id;
+
+ r = exec_spawn(c,
+ &s->exec_context,
+ &exec_params,
+ s->exec_runtime,
+ &pid);
+ if (r < 0)
goto fail;
- if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
+ r = unit_watch_pid(UNIT(s), pid);
+ if (r < 0)
/* FIXME: we need to do something here */
goto fail;
return 0;
fail:
- unit_unwatch_timer(UNIT(s), &s->timer_watch);
-
+ s->timer_event_source = sd_event_source_unref(s->timer_event_source);
return r;
}
if (f != SWAP_SUCCESS)
s->result = f;
+ exec_runtime_destroy(s->exec_runtime);
+ s->exec_runtime = exec_runtime_unref(s->exec_runtime);
+
+ exec_context_destroy_runtime_directory(&s->exec_context, manager_get_runtime_prefix(UNIT(s)->manager));
+
swap_set_state(s, s->result != SWAP_SUCCESS ? SWAP_FAILED : SWAP_DEAD);
}
static void swap_enter_signal(Swap *s, SwapState state, SwapResult f) {
int r;
- Set *pid_set = NULL;
- bool wait_for_exit = false;
assert(s);
if (f != SWAP_SUCCESS)
s->result = f;
- if (s->exec_context.kill_mode != KILL_NONE) {
- int sig = (state == SWAP_ACTIVATING_SIGTERM ||
- state == SWAP_DEACTIVATING_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
-
- if (s->control_pid > 0) {
- 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
- wait_for_exit = true;
- }
-
- if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
-
- if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
- r = -ENOMEM;
- goto fail;
- }
-
- /* Exclude the control pid from being killed via the cgroup */
- if (s->control_pid > 0)
- if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
- goto fail;
-
- r = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, sig, true, false, pid_set, NULL);
- if (r < 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;
- }
- }
+ r = unit_kill_context(
+ UNIT(s),
+ &s->kill_context,
+ (state != SWAP_ACTIVATING_SIGTERM && state != SWAP_DEACTIVATING_SIGTERM) ?
+ KILL_KILL : KILL_TERMINATE,
+ -1,
+ s->control_pid,
+ false);
+ if (r < 0)
+ goto fail;
- if (wait_for_exit) {
- if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
+ if (r > 0) {
+ r = swap_arm_timer(s);
+ if (r < 0)
goto fail;
swap_set_state(s, state);
- } else
+ } else if (state == SWAP_ACTIVATING_SIGTERM)
+ swap_enter_signal(s, SWAP_ACTIVATING_SIGKILL, SWAP_SUCCESS);
+ else if (state == SWAP_DEACTIVATING_SIGTERM)
+ swap_enter_signal(s, SWAP_DEACTIVATING_SIGKILL, SWAP_SUCCESS);
+ else
swap_enter_dead(s, SWAP_SUCCESS);
return;
fail:
- log_warning("%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
-
+ log_unit_warning_errno(UNIT(s)->id, r, "%s failed to kill processes: %m", UNIT(s)->id);
swap_enter_dead(s, SWAP_FAILURE_RESOURCES);
-
- if (pid_set)
- set_free(pid_set);
}
static void swap_enter_activating(Swap *s) {
- int r, priority;
+ _cleanup_free_ char *discard = NULL;
+ int r, priority = -1;
assert(s);
s->control_command_id = SWAP_EXEC_ACTIVATE;
s->control_command = s->exec_command + SWAP_EXEC_ACTIVATE;
- if (s->from_fragment)
+ if (s->from_fragment) {
+ fstab_filter_options(s->parameters_fragment.options, "discard\0",
+ NULL, &discard, NULL);
+
priority = s->parameters_fragment.priority;
- else if (s->from_etc_fstab)
- priority = s->parameters_etc_fstab.priority;
- else
- priority = -1;
+ if (priority < 0)
+ fstab_find_pri(s->parameters_fragment.options, &priority);
+ }
+
+ r = exec_command_set(s->control_command, "/sbin/swapon", NULL);
+ if (r < 0)
+ goto fail;
if (priority >= 0) {
- char p[LINE_MAX];
-
- snprintf(p, sizeof(p), "%i", priority);
- char_array_0(p);
-
- r = exec_command_set(
- s->control_command,
- "/sbin/swapon",
- "-p",
- p,
- s->what,
- NULL);
- } else
- r = exec_command_set(
- s->control_command,
- "/sbin/swapon",
- s->what,
- NULL);
+ char p[DECIMAL_STR_MAX(int)];
+
+ sprintf(p, "%i", priority);
+ r = exec_command_append(s->control_command, "-p", p, NULL);
+ if (r < 0)
+ goto fail;
+ }
+
+ if (discard && !streq(discard, "none")) {
+ const char *discard_arg;
+
+ if (streq(discard, "all"))
+ discard_arg = "--discard";
+ else
+ discard_arg = strappenda("--discard=", discard);
+ r = exec_command_append(s->control_command, discard_arg, NULL);
+ if (r < 0)
+ goto fail;
+ }
+
+ r = exec_command_append(s->control_command, s->what, NULL);
if (r < 0)
goto fail;
swap_unwatch_control_pid(s);
- if ((r = swap_spawn(s, s->control_command, &s->control_pid)) < 0)
+ r = swap_spawn(s, s->control_command, &s->control_pid);
+ if (r < 0)
goto fail;
swap_set_state(s, SWAP_ACTIVATING);
return;
fail:
- log_warning("%s failed to run 'swapon' task: %s", UNIT(s)->id, strerror(-r));
+ log_unit_warning_errno(UNIT(s)->id, r, "%s failed to run 'swapon' task: %m", UNIT(s)->id);
swap_enter_dead(s, SWAP_FAILURE_RESOURCES);
}
s->control_command_id = SWAP_EXEC_DEACTIVATE;
s->control_command = s->exec_command + SWAP_EXEC_DEACTIVATE;
- if ((r = exec_command_set(
- s->control_command,
+ r = exec_command_set(s->control_command,
"/sbin/swapoff",
s->what,
- NULL)) < 0)
+ NULL);
+ if (r < 0)
goto fail;
swap_unwatch_control_pid(s);
- if ((r = swap_spawn(s, s->control_command, &s->control_pid)) < 0)
+ r = swap_spawn(s, s->control_command, &s->control_pid);
+ if (r < 0)
goto fail;
swap_set_state(s, SWAP_DEACTIVATING);
return;
fail:
- log_warning("%s failed to run 'swapoff' task: %s", UNIT(s)->id, strerror(-r));
+ log_unit_warning_errno(UNIT(s)->id, r, "%s failed to run 'swapoff' task: %m", UNIT(s)->id);
swap_enter_active(s, SWAP_FAILURE_RESOURCES);
}
assert(s->state == SWAP_DEAD || s->state == SWAP_FAILED);
+ if (detect_container(NULL) > 0)
+ return -EPERM;
+
s->result = SWAP_SUCCESS;
swap_enter_activating(s);
return 0;
return 0;
assert(s->state == SWAP_ACTIVATING ||
+ s->state == SWAP_ACTIVATING_DONE ||
s->state == SWAP_ACTIVE);
+ if (detect_container(NULL) > 0)
+ return -EPERM;
+
swap_enter_deactivating(s);
return 0;
}
unit_serialize_item(u, f, "result", swap_result_to_string(s->result));
if (s->control_pid > 0)
- unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
+ unit_serialize_item_format(u, f, "control-pid", PID_FMT, s->control_pid);
if (s->control_command_id >= 0)
unit_serialize_item(u, f, "control-command", swap_exec_command_to_string(s->control_command_id));
if (streq(key, "state")) {
SwapState state;
- if ((state = swap_state_from_string(value)) < 0)
- log_debug("Failed to parse state value %s", value);
+ state = swap_state_from_string(value);
+ if (state < 0)
+ log_unit_debug(u->id, "Failed to parse state value %s", value);
else
s->deserialized_state = state;
} else if (streq(key, "result")) {
f = swap_result_from_string(value);
if (f < 0)
- log_debug("Failed to parse result value %s", value);
+ log_unit_debug(u->id, "Failed to parse result value %s", value);
else if (f != SWAP_SUCCESS)
s->result = f;
} else if (streq(key, "control-pid")) {
pid_t pid;
if (parse_pid(value, &pid) < 0)
- log_debug("Failed to parse control-pid value %s", value);
+ log_unit_debug(u->id, "Failed to parse control-pid value %s", value);
else
s->control_pid = pid;
} else if (streq(key, "control-command")) {
SwapExecCommand id;
- if ((id = swap_exec_command_from_string(value)) < 0)
- log_debug("Failed to parse exec-command value %s", value);
+ id = swap_exec_command_from_string(value);
+ if (id < 0)
+ log_unit_debug(u->id, "Failed to parse exec-command value %s", value);
else {
s->control_command_id = id;
s->control_command = s->exec_command + id;
}
-
} else
- log_debug("Unknown serialization key '%s'", key);
+ log_unit_debug(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);
- return s->from_etc_fstab || s->from_proc_swaps;
+ return s->from_proc_swaps;
}
static void swap_sigchld_event(Unit *u, pid_t pid, int code, int status) {
s->control_pid = 0;
- if (is_clean_exit(code, status))
+ if (is_clean_exit(code, status, NULL))
f = SWAP_SUCCESS;
else if (code == CLD_EXITED)
f = SWAP_FAILURE_EXIT_CODE;
s->control_command_id = _SWAP_EXEC_COMMAND_INVALID;
}
- log_full(f == SWAP_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
- "%s swap process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status);
+ log_unit_full(u->id,
+ f == SWAP_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
+ "%s swap process exited, code=%s status=%i",
+ u->id, sigchld_code_to_string(code), status);
switch (s->state) {
case SWAP_ACTIVATING:
+ case SWAP_ACTIVATING_DONE:
case SWAP_ACTIVATING_SIGTERM:
case SWAP_ACTIVATING_SIGKILL:
case SWAP_DEACTIVATING_SIGKILL:
case SWAP_DEACTIVATING_SIGTERM:
- if (f == SWAP_SUCCESS)
- swap_enter_dead(s, f);
- else
- swap_enter_dead(s, f);
+ swap_enter_dead(s, f);
break;
default:
/* Notify clients about changed exit status */
unit_add_to_dbus_queue(u);
-
- /* Request a reload of /proc/swaps, so that following units
- * can follow our state change */
- u->manager->request_reload = true;
}
-static void swap_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
- Swap *s = SWAP(u);
+static int swap_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) {
+ Swap *s = SWAP(userdata);
assert(s);
- assert(elapsed == 1);
- assert(w == &s->timer_watch);
+ assert(s->timer_event_source == source);
switch (s->state) {
case SWAP_ACTIVATING:
- log_warning("%s activation timed out. Stopping.", u->id);
+ case SWAP_ACTIVATING_DONE:
+ log_unit_warning(UNIT(s)->id, "%s activation timed out. Stopping.", UNIT(s)->id);
swap_enter_signal(s, SWAP_ACTIVATING_SIGTERM, SWAP_FAILURE_TIMEOUT);
break;
case SWAP_DEACTIVATING:
- log_warning("%s deactivation timed out. Stopping.", u->id);
+ log_unit_warning(UNIT(s)->id, "%s deactivation timed out. Stopping.", UNIT(s)->id);
swap_enter_signal(s, SWAP_DEACTIVATING_SIGTERM, SWAP_FAILURE_TIMEOUT);
break;
case SWAP_ACTIVATING_SIGTERM:
- if (s->exec_context.send_sigkill) {
- log_warning("%s activation timed out. Killing.", u->id);
+ if (s->kill_context.send_sigkill) {
+ log_unit_warning(UNIT(s)->id, "%s activation timed out. Killing.", UNIT(s)->id);
swap_enter_signal(s, SWAP_ACTIVATING_SIGKILL, SWAP_FAILURE_TIMEOUT);
} else {
- log_warning("%s activation timed out. Skipping SIGKILL. Ignoring.", u->id);
+ log_unit_warning(UNIT(s)->id, "%s activation timed out. Skipping SIGKILL. Ignoring.", UNIT(s)->id);
swap_enter_dead(s, SWAP_FAILURE_TIMEOUT);
}
break;
case SWAP_DEACTIVATING_SIGTERM:
- if (s->exec_context.send_sigkill) {
- log_warning("%s deactivation timed out. Killing.", u->id);
+ if (s->kill_context.send_sigkill) {
+ log_unit_warning(UNIT(s)->id, "%s deactivation timed out. Killing.", UNIT(s)->id);
swap_enter_signal(s, SWAP_DEACTIVATING_SIGKILL, SWAP_FAILURE_TIMEOUT);
} else {
- log_warning("%s deactivation timed out. Skipping SIGKILL. Ignoring.", u->id);
+ log_unit_warning(UNIT(s)->id, "%s deactivation timed out. Skipping SIGKILL. Ignoring.", UNIT(s)->id);
swap_enter_dead(s, SWAP_FAILURE_TIMEOUT);
}
break;
case SWAP_ACTIVATING_SIGKILL:
case SWAP_DEACTIVATING_SIGKILL:
- log_warning("%s swap process still around after SIGKILL. Ignoring.", u->id);
+ log_unit_warning(UNIT(s)->id, "%s swap process still around after SIGKILL. Ignoring.", UNIT(s)->id);
swap_enter_dead(s, SWAP_FAILURE_TIMEOUT);
break;
default:
assert_not_reached("Timeout at wrong time.");
}
+
+ return 0;
}
static int swap_load_proc_swaps(Manager *m, bool set_flags) {
(void) fscanf(m->proc_swaps, "%*s %*s %*s %*s %*s\n");
for (i = 1;; i++) {
- char *dev = NULL, *d;
+ _cleanup_free_ char *dev = NULL, *d = NULL;
int prio = 0, k;
- if ((k = fscanf(m->proc_swaps,
- "%ms " /* device/file */
- "%*s " /* type of swap */
- "%*s " /* swap size */
- "%*s " /* used */
- "%i\n", /* priority */
- &dev, &prio)) != 2) {
-
+ k = fscanf(m->proc_swaps,
+ "%ms " /* device/file */
+ "%*s " /* type of swap */
+ "%*s " /* swap size */
+ "%*s " /* used */
+ "%i\n", /* priority */
+ &dev, &prio);
+ if (k != 2) {
if (k == EOF)
break;
- log_warning("Failed to parse /proc/swaps:%u.", i);
- free(dev);
+ log_warning("Failed to parse /proc/swaps:%u", i);
continue;
}
d = cunescape(dev);
- free(dev);
-
if (!d)
return -ENOMEM;
k = swap_process_new_swap(m, d, prio, set_flags);
- free(d);
-
if (k < 0)
r = k;
}
return r;
}
-int swap_dispatch_reload(Manager *m) {
- /* This function should go as soon as the kernel properly notifies us */
-
- if (_likely_(!m->request_reload))
- return 0;
-
- m->request_reload = false;
-
- return swap_fd_event(m, EPOLLPRI);
-}
-
-int swap_fd_event(Manager *m, int events) {
+static int swap_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
+ Manager *m = userdata;
Unit *u;
int r;
assert(m);
- assert(events & EPOLLPRI);
+ assert(revents & EPOLLPRI);
- if ((r = swap_load_proc_swaps(m, true)) < 0) {
- log_error("Failed to reread /proc/swaps: %s", strerror(-r));
+ r = swap_load_proc_swaps(m, true);
+ if (r < 0) {
+ log_error_errno(r, "Failed to reread /proc/swaps: %m");
/* Reset flags, just in case, for late calls */
LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_SWAP]) {
if (!swap->is_active) {
/* This has just been deactivated */
- swap->from_proc_swaps = false;
swap_unset_proc_swaps(swap);
switch (swap->state) {
break;
default:
+ /* Fire again */
swap_set_state(swap, swap->state);
break;
}
swap_enter_active(swap, SWAP_SUCCESS);
break;
+ case SWAP_ACTIVATING:
+ swap_set_state(swap, SWAP_ACTIVATING_DONE);
+ break;
+
default:
/* Nothing really changed, but let's
* issue an notification call
assert(s);
- if (streq_ptr(s->what, s->parameters_proc_swaps.what))
+ /* If the user configured the swap through /etc/fstab or
+ * a device unit, follow that. */
+
+ if (s->from_fragment)
return NULL;
- /* Make everybody follow the unit that's named after the swap
- * device in the kernel */
+ LIST_FOREACH_AFTER(same_devnode, other, s)
+ if (other->from_fragment)
+ return UNIT(other);
+
+ LIST_FOREACH_BEFORE(same_devnode, other, s)
+ if (other->from_fragment)
+ return UNIT(other);
+
+ /* Otherwise make everybody follow the unit that's named after
+ * the swap device in the kernel */
- LIST_FOREACH_AFTER(same_proc_swaps, other, s)
- if (streq_ptr(other->what, other->parameters_proc_swaps.what))
+ if (streq_ptr(s->what, s->devnode))
+ return NULL;
+
+ LIST_FOREACH_AFTER(same_devnode, other, s)
+ if (streq_ptr(other->what, other->devnode))
return UNIT(other);
- LIST_FOREACH_BEFORE(same_proc_swaps, other, s) {
- if (streq_ptr(other->what, other->parameters_proc_swaps.what))
+ LIST_FOREACH_BEFORE(same_devnode, other, s) {
+ if (streq_ptr(other->what, other->devnode))
return UNIT(other);
first = other;
}
+ /* Fall back to the first on the list */
return UNIT(first);
}
static int swap_following_set(Unit *u, Set **_set) {
- Swap *s = SWAP(u);
- Swap *other;
+ Swap *s = SWAP(u), *other;
Set *set;
int r;
assert(s);
assert(_set);
- if (LIST_JUST_US(same_proc_swaps, s)) {
+ if (LIST_JUST_US(same_devnode, s)) {
*_set = NULL;
return 0;
}
- if (!(set = set_new(NULL, NULL)))
+ set = set_new(NULL);
+ if (!set)
return -ENOMEM;
- LIST_FOREACH_AFTER(same_proc_swaps, other, s)
- if ((r = set_put(set, other)) < 0)
+ LIST_FOREACH_AFTER(same_devnode, other, s) {
+ r = set_put(set, other);
+ if (r < 0)
goto fail;
+ }
- LIST_FOREACH_BEFORE(same_proc_swaps, other, s)
- if ((r = set_put(set, other)) < 0)
+ LIST_FOREACH_BEFORE(same_devnode, other, s) {
+ r = set_put(set, other);
+ if (r < 0)
goto fail;
+ }
*_set = set;
return 1;
static void swap_shutdown(Manager *m) {
assert(m);
+ m->swap_event_source = sd_event_source_unref(m->swap_event_source);
+
if (m->proc_swaps) {
fclose(m->proc_swaps);
m->proc_swaps = NULL;
}
- hashmap_free(m->swaps_by_proc_swaps);
- m->swaps_by_proc_swaps = NULL;
+ hashmap_free(m->swaps_by_devnode);
+ m->swaps_by_devnode = NULL;
}
static int swap_enumerate(Manager *m) {
int r;
- struct epoll_event ev;
+
assert(m);
if (!m->proc_swaps) {
- if (!(m->proc_swaps = fopen("/proc/swaps", "re")))
- return (errno == ENOENT) ? 0 : -errno;
+ m->proc_swaps = fopen("/proc/swaps", "re");
+ if (!m->proc_swaps)
+ return errno == ENOENT ? 0 : -errno;
+
+ r = sd_event_add_io(m->event, &m->swap_event_source, fileno(m->proc_swaps), EPOLLPRI, swap_dispatch_io, m);
+ if (r < 0)
+ goto fail;
+
+ /* Dispatch this before we dispatch SIGCHLD, so that
+ * we always get the events from /proc/swaps before
+ * the SIGCHLD of /sbin/swapon. */
+ r = sd_event_source_set_priority(m->swap_event_source, -10);
+ if (r < 0)
+ goto fail;
+ }
+
+ r = swap_load_proc_swaps(m, false);
+ if (r < 0)
+ goto fail;
+
+ return 0;
+
+fail:
+ swap_shutdown(m);
+ return r;
+}
+
+int swap_process_new_device(Manager *m, struct udev_device *dev) {
+ struct udev_list_entry *item = NULL, *first = NULL;
+ _cleanup_free_ char *e = NULL;
+ const char *dn;
+ Swap *s;
+ int r = 0;
+
+ assert(m);
+ assert(dev);
+
+ dn = udev_device_get_devnode(dev);
+ if (!dn)
+ return 0;
+
+ e = unit_name_from_path(dn, ".swap");
+ if (!e)
+ return -ENOMEM;
+
+ s = hashmap_get(m->units, e);
+ if (s)
+ r = swap_set_devnode(s, dn);
+
+ first = udev_device_get_devlinks_list_entry(dev);
+ udev_list_entry_foreach(item, first) {
+ _cleanup_free_ char *n = NULL;
- m->swap_watch.type = WATCH_SWAP;
- m->swap_watch.fd = fileno(m->proc_swaps);
+ n = unit_name_from_path(udev_list_entry_get_name(item), ".swap");
+ if (!n)
+ return -ENOMEM;
- zero(ev);
- ev.events = EPOLLPRI;
- ev.data.ptr = &m->swap_watch;
+ s = hashmap_get(m->units, n);
+ if (s) {
+ int q;
- if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->swap_watch.fd, &ev) < 0)
- return -errno;
+ q = swap_set_devnode(s, dn);
+ if (q < 0)
+ r = q;
+ }
}
- /* We rely on mount.c to load /etc/fstab for us */
+ return r;
+}
+
+int swap_process_removed_device(Manager *m, struct udev_device *dev) {
+ const char *dn;
+ int r = 0;
+ Swap *s;
- if ((r = swap_load_proc_swaps(m, false)) < 0)
- swap_shutdown(m);
+ dn = udev_device_get_devnode(dev);
+ if (!dn)
+ return 0;
+
+ while ((s = hashmap_get(m->swaps_by_devnode, dn))) {
+ int q;
+
+ q = swap_set_devnode(s, NULL);
+ if (q < 0)
+ r = q;
+ }
return r;
}
s->result = SWAP_SUCCESS;
}
-static int swap_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
- Swap *s = SWAP(u);
- int r = 0;
- Set *pid_set = NULL;
-
- assert(s);
-
- if (who == KILL_MAIN) {
- dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "Swap units have no main processes");
- return -ESRCH;
- }
+static int swap_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) {
+ return unit_kill_common(u, who, signo, -1, SWAP(u)->control_pid, error);
+}
- if (s->control_pid <= 0 && who == KILL_CONTROL) {
- dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
- return -ESRCH;
- }
+static int swap_get_timeout(Unit *u, uint64_t *timeout) {
+ Swap *s = SWAP(u);
+ int r;
- if (who == KILL_CONTROL || who == KILL_ALL)
- if (s->control_pid > 0)
- if (kill(s->control_pid, signo) < 0)
- r = -errno;
+ if (!s->timer_event_source)
+ return 0;
- if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
- int q;
+ r = sd_event_source_get_time(s->timer_event_source, timeout);
+ if (r < 0)
+ return r;
- if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
- return -ENOMEM;
+ return 1;
+}
- /* Exclude the control pid from being killed via the cgroup */
- if (s->control_pid > 0)
- if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
- r = q;
- goto finish;
- }
+static bool swap_supported(Manager *m) {
+ static int supported = -1;
- q = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, signo, false, false, pid_set, NULL);
- if (q < 0)
- if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
- r = q;
- }
+ /* If swap support is not available in the kernel, or we are
+ * running in a container we don't support swap units, and any
+ * attempts to starting one should fail immediately. */
-finish:
- if (pid_set)
- set_free(pid_set);
+ if (supported < 0)
+ supported =
+ access("/proc/swaps", F_OK) >= 0 &&
+ detect_container(NULL) <= 0;
- return r;
+ return supported;
}
static const char* const swap_state_table[_SWAP_STATE_MAX] = {
[SWAP_DEAD] = "dead",
[SWAP_ACTIVATING] = "activating",
+ [SWAP_ACTIVATING_DONE] = "activating-done",
[SWAP_ACTIVE] = "active",
[SWAP_DEACTIVATING] = "deactivating",
[SWAP_ACTIVATING_SIGTERM] = "activating-sigterm",
DEFINE_STRING_TABLE_LOOKUP(swap_result, SwapResult);
const UnitVTable swap_vtable = {
- .suffix = ".swap",
.object_size = sizeof(Swap),
+ .exec_context_offset = offsetof(Swap, exec_context),
+ .cgroup_context_offset = offsetof(Swap, cgroup_context),
+ .kill_context_offset = offsetof(Swap, kill_context),
+ .exec_runtime_offset = offsetof(Swap, exec_runtime),
+
.sections =
"Unit\0"
"Swap\0"
"Install\0",
+ .private_section = "Swap",
.no_alias = true,
.no_instances = true,
- .show_status = true,
.init = swap_init,
.load = swap_load,
.kill = swap_kill,
+ .get_timeout = swap_get_timeout,
+
.serialize = swap_serialize,
.deserialize_item = swap_deserialize_item,
.check_gc = swap_check_gc,
.sigchld_event = swap_sigchld_event,
- .timer_event = swap_timer_event,
.reset_failed = swap_reset_failed,
.bus_interface = "org.freedesktop.systemd1.Swap",
- .bus_message_handler = bus_swap_message_handler,
- .bus_invalidating_properties = bus_swap_invalidating_properties,
+ .bus_vtable = bus_swap_vtable,
+ .bus_set_property = bus_swap_set_property,
+ .bus_commit_properties = bus_swap_commit_properties,
.following = swap_following,
.following_set = swap_following_set,
.enumerate = swap_enumerate,
- .shutdown = swap_shutdown
+ .shutdown = swap_shutdown,
+ .supported = swap_supported,
+
+ .status_message_formats = {
+ .starting_stopping = {
+ [0] = "Activating swap %s...",
+ [1] = "Deactivating swap %s...",
+ },
+ .finished_start_job = {
+ [JOB_DONE] = "Activated swap %s.",
+ [JOB_FAILED] = "Failed to activate swap %s.",
+ [JOB_DEPENDENCY] = "Dependency failed for %s.",
+ [JOB_TIMEOUT] = "Timed out activating swap %s.",
+ },
+ .finished_stop_job = {
+ [JOB_DONE] = "Deactivated swap %s.",
+ [JOB_FAILED] = "Failed deactivating swap %s.",
+ [JOB_TIMEOUT] = "Timed out deactivating swap %s.",
+ },
+ },
};
~ianmdlvl / elogind.git / blobdiff