#include "exit-status.h"
#include "def.h"
#include "path-util.h"
+#include "virt.h"
static const UnitActiveState state_translation_table[_SWAP_STATE_MAX] = {
[SWAP_DEAD] = UNIT_INACTIVE,
static void swap_unset_proc_swaps(Swap *s) {
Swap *first;
+ Hashmap *swaps;
assert(s);
/* Remove this unit from the chain of swaps which share the
* same kernel swap device. */
-
- first = hashmap_get(UNIT(s)->manager->swaps_by_proc_swaps, s->parameters_proc_swaps.what);
+ swaps = UNIT(s)->manager->swaps_by_proc_swaps;
+ first = hashmap_get(swaps, s->parameters_proc_swaps.what);
LIST_REMOVE(Swap, same_proc_swaps, first, s);
if (first)
- hashmap_remove_and_replace(UNIT(s)->manager->swaps_by_proc_swaps, s->parameters_proc_swaps.what, first->parameters_proc_swaps.what, first);
+ hashmap_remove_and_replace(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);
+ hashmap_remove(swaps, s->parameters_proc_swaps.what);
free(s->parameters_proc_swaps.what);
s->parameters_proc_swaps.what = NULL;
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;
+ kill_context_init(&s->kill_context);
+ cgroup_context_init(&s->cgroup_context);
s->parameters_proc_swaps.priority = s->parameters_fragment.priority = -1;
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);
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)
+ r = unit_add_two_dependencies(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true);
+ if (r < 0)
return r;
return 0;
return 0;
}
-static int swap_add_target_links(Swap *s) {
- Unit *tu;
- int r;
-
- assert(s);
-
- if (!s->from_fragment)
- return 0;
-
- if ((r = manager_load_unit(UNIT(s)->manager, SPECIAL_SWAP_TARGET, NULL, NULL, &tu)) < 0)
- return r;
-
- return unit_add_dependency(UNIT(s), UNIT_BEFORE, tu, true);
-}
-
static int swap_add_device_links(Swap *s) {
SwapParameters *p;
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, !p->noauto &&
+ 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) {
+ bool nofail = false, noauto = false;
int r;
assert(s);
- if (UNIT(s)->manager->running_as != MANAGER_SYSTEM)
+ if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM)
+ return 0;
+
+ if (detect_container(NULL) > 0)
return 0;
r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true);
if (r < 0)
return r;
+ if (s->from_fragment) {
+ SwapParameters *p = &s->parameters_fragment;
+
+ nofail = p->nofail;
+ noauto = p->noauto;
+ }
+
+ if (!noauto) {
+ if (nofail)
+ r = unit_add_dependency_by_name_inverse(UNIT(s),
+ UNIT_WANTS, SPECIAL_SWAP_TARGET, NULL, true);
+ else
+ r = unit_add_two_dependencies_by_name_inverse(UNIT(s),
+ UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SWAP_TARGET, NULL, true);
+ if (r < 0)
+ return r;
+ }
+
return 0;
}
static int swap_verify(Swap *s) {
bool b;
- char *e;
+ _cleanup_free_ char *e = NULL;
if (UNIT(s)->load_state != UNIT_LOADED)
return 0;
- if (!(e = unit_name_from_path(s->what, ".swap")))
- return -ENOMEM;
+ e = unit_name_from_path(s->what, ".swap");
+ if (e == NULL)
+ 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_error_unit(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_error_unit(UNIT(s)->id,
+ "%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing to load.",
+ UNIT(s)->id);
return -EINVAL;
}
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)
+ r = unit_add_exec_dependencies(u, &s->exec_context);
+ if (r < 0)
return r;
if (UNIT(s)->fragment_path)
if ((r = unit_set_description(u, s->what)) < 0)
return r;
- if ((r = swap_add_device_links(s)) < 0)
- return r;
-
- if ((r = swap_add_mount_links(s)) < 0)
+ r = swap_add_device_links(s);
+ if (r < 0)
return r;
- if ((r = swap_add_target_links(s)) < 0)
+ r = swap_add_mount_links(s);
+ if (r < 0)
return r;
- if ((r = unit_add_default_cgroups(u)) < 0)
+ r = unit_add_default_slice(u);
+ 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;
+ }
+
+ r = unit_exec_context_defaults(u, &s->exec_context);
+ if (r < 0)
+ return r;
}
return swap_verify(s);
bool set_flags) {
Unit *u = NULL;
- char *e = NULL, *wp = NULL;
+ _cleanup_free_ char *e = NULL;
+ char *wp = NULL;
bool delete = false;
int r;
SwapParameters *p;
e = unit_name_from_path(what, ".swap");
if (!e)
- return -ENOMEM;
+ return log_oom();
u = manager_get_unit(m, e);
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;
}
p = &SWAP(u)->parameters_proc_swaps;
if (!p->what) {
- if (!(wp = strdup(what_proc_swaps))) {
- r = -ENOMEM;
+ wp = strdup(what_proc_swaps);
+ if (!wp) {
+ r = log_oom();
goto fail;
}
- if (!m->swaps_by_proc_swaps)
- if (!(m->swaps_by_proc_swaps = hashmap_new(string_hash_func, string_compare_func))) {
- r = -ENOMEM;
+ if (!m->swaps_by_proc_swaps) {
+ m->swaps_by_proc_swaps = hashmap_new(string_hash_func, string_compare_func);
+ if (!m->swaps_by_proc_swaps) {
+ r = log_oom();
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)
+ r = hashmap_replace(m->swaps_by_proc_swaps, wp, first);
+ if (r < 0)
goto fail;
}
unit_add_to_dbus_queue(u);
- free(e);
-
return 0;
fail:
- log_warning("Failed to load swap unit: %s", strerror(-r));
+ log_warning_unit(e, "Failed to load swap unit: %s", strerror(-r));
free(wp);
- free(e);
if (delete && u)
unit_free(u);
/* So this is a proper swap device. Create swap units
* for all names this swap device is known under */
- 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 log_oom();
dn = udev_device_get_devnode(d);
- if (dn)
+ /* Skip dn==device, since that case will be handled below */
+ if (dn && !streq(dn, device))
r = swap_add_one(m, dn, device, prio, false, false, set_flags);
/* Add additional units for all symlinks */
continue;
if (stat(p, &st) >= 0)
- if ((!S_ISBLK(st.st_mode)) || st.st_rdev != udev_device_get_devnum(d))
+ if ((!S_ISBLK(st.st_mode)) ||
+ st.st_rdev != udev_device_get_devnum(d))
continue;
k = swap_add_one(m, p, device, prio, false, false, set_flags);
}
if (state != old_state)
- log_debug("%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);
+ log_debug_unit(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);
}
static int swap_coldplug(Unit *u) {
if (s->control_pid <= 0)
return -EBADMSG;
- if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
+ r = unit_watch_pid(UNIT(s), s->control_pid);
+ if (r < 0)
return r;
- if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
+ r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->timeout_usec, &s->timer_watch);
+ if (r < 0)
return r;
}
prefix, (unsigned long) 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) {
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_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->timeout_usec, &s->timer_watch);
+ 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,
- UNIT(s)->id,
- NULL,
- &pid)) < 0)
+ 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_mask,
+ UNIT(s)->cgroup_path,
+ UNIT(s)->id,
+ NULL,
+ &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;
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);
}
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,
+ -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 = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->timeout_usec, &s->timer_watch);
+ if (r < 0)
goto fail;
swap_set_state(s, state);
return;
fail:
- log_warning("%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
+ log_warning_unit(UNIT(s)->id,
+ "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
swap_enter_dead(s, SWAP_FAILURE_RESOURCES);
-
- if (pid_set)
- set_free(pid_set);
}
static void swap_enter_activating(Swap *s) {
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_warning_unit(UNIT(s)->id,
+ "%s failed to run 'swapon' task: %s",
+ UNIT(s)->id, strerror(-r));
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_warning_unit(UNIT(s)->id,
+ "%s failed to run 'swapoff' task: %s",
+ UNIT(s)->id, strerror(-r));
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;
assert(s->state == SWAP_ACTIVATING ||
s->state == SWAP_ACTIVE);
+ if (detect_container(NULL) > 0)
+ return -EPERM;
+
swap_enter_deactivating(s);
return 0;
}
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;
}
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_debug_unit(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_debug_unit(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_debug_unit(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_debug_unit(u->id, "Failed to parse exec-command value %s", value);
else {
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("Unknown serialization key '%s'", key);
+ 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);
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_full_unit(f == SWAP_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
+ u->id,
+ "%s swap process exited, code=%s status=%i",
+ u->id, sigchld_code_to_string(code), status);
switch (s->state) {
switch (s->state) {
case SWAP_ACTIVATING:
- log_warning("%s activation timed out. Stopping.", u->id);
+ log_warning_unit(u->id, "%s activation timed out. Stopping.", u->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_warning_unit(u->id, "%s deactivation timed out. Stopping.", u->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_warning_unit(u->id, "%s activation timed out. Killing.", u->id);
swap_enter_signal(s, SWAP_ACTIVATING_SIGKILL, SWAP_FAILURE_TIMEOUT);
} else {
- log_warning("%s activation timed out. Skipping SIGKILL. Ignoring.", u->id);
+ log_warning_unit(u->id, "%s activation timed out. Skipping SIGKILL. Ignoring.", u->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_warning_unit(u->id, "%s deactivation timed out. Killing.", u->id);
swap_enter_signal(s, SWAP_DEACTIVATING_SIGKILL, SWAP_FAILURE_TIMEOUT);
} else {
- log_warning("%s deactivation timed out. Skipping SIGKILL. Ignoring.", u->id);
+ log_warning_unit(u->id, "%s deactivation timed out. Skipping SIGKILL. Ignoring.", u->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_warning_unit(u->id, "%s swap process still around after SIGKILL. Ignoring.", u->id);
swap_enter_dead(s, SWAP_FAILURE_TIMEOUT);
break;
(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;
}
assert(m);
assert(events & EPOLLPRI);
- if ((r = swap_load_proc_swaps(m, true)) < 0) {
+ r = swap_load_proc_swaps(m, true);
+ if (r < 0) {
log_error("Failed to reread /proc/swaps: %s", strerror(-r));
/* Reset flags, just in case, for late calls */
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")))
+ 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;
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;
}
- if ((r = swap_load_proc_swaps(m, false)) < 0)
+ r = swap_load_proc_swaps(m, false);
+ if (r < 0)
swap_shutdown(m);
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;
- }
-
- if (s->control_pid <= 0 && who == KILL_CONTROL) {
- dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
- return -ESRCH;
- }
-
- if (who == KILL_CONTROL || who == KILL_ALL)
- if (s->control_pid > 0)
- if (kill(s->control_pid, signo) < 0)
- r = -errno;
-
- if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
- int q;
-
- if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
- return -ENOMEM;
-
- /* 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;
- }
-
- 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;
- }
-
-finish:
- if (pid_set)
- set_free(pid_set);
-
- return r;
+static int swap_kill(Unit *u, KillWho who, int signo, DBusError *error) {
+ return unit_kill_common(u, who, signo, -1, SWAP(u)->control_pid, error);
}
static const char* const swap_state_table[_SWAP_STATE_MAX] = {
const UnitVTable swap_vtable = {
.object_size = sizeof(Swap),
+
.sections =
"Unit\0"
"Swap\0"
"Install\0",
+ .private_section = "Swap",
+ .exec_context_offset = offsetof(Swap, exec_context),
+ .cgroup_context_offset = offsetof(Swap, cgroup_context),
+
.no_alias = true,
.no_instances = true,
.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,
~ianmdlvl / elogind.git / blobdiff