[UNIT_SNAPSHOT] = &snapshot_vtable,
[UNIT_SWAP] = &swap_vtable,
[UNIT_PATH] = &path_vtable,
- [UNIT_SLICE] = &slice_vtable
+ [UNIT_SLICE] = &slice_vtable,
+ [UNIT_SCOPE] = &scope_vtable
};
Unit *unit_new(Manager *m, size_t size) {
}
int unit_choose_id(Unit *u, const char *name) {
- char *s, *t = NULL, *i;
+ char *s, *i;
+ _cleanup_free_ char *t = NULL;
int r;
assert(u);
/* Selects one of the names of this unit as the id */
s = set_get(u->names, (char*) name);
- free(t);
if (!s)
return -ENOENT;
assert(u);
- if (!(s = strdup(description)))
- return -ENOMEM;
+ if (isempty(description))
+ s = NULL;
+ else {
+ s = strdup(description);
+ if (!s)
+ return -ENOMEM;
+ }
free(u->description);
u->description = s;
u->in_gc_queue = true;
u->manager->n_in_gc_queue ++;
-
- if (u->manager->gc_queue_timestamp <= 0)
- u->manager->gc_queue_timestamp = now(CLOCK_MONOTONIC);
}
void unit_add_to_dbus_queue(Unit *u) {
set_free(s);
}
+static void unit_remove_transient(Unit *u) {
+ char **i;
+
+ assert(u);
+
+ if (!u->transient)
+ return;
+
+ if (u->fragment_path)
+ unlink(u->fragment_path);
+
+ STRV_FOREACH(i, u->dropin_paths) {
+ _cleanup_free_ char *p = NULL;
+ int r;
+
+ unlink(*i);
+
+ r = path_get_parent(*i, &p);
+ if (r >= 0)
+ rmdir(p);
+ }
+}
+
+static void unit_free_requires_mounts_for(Unit *u) {
+ char **j;
+
+ STRV_FOREACH(j, u->requires_mounts_for) {
+ char s[strlen(*j) + 1];
+
+ PATH_FOREACH_PREFIX_MORE(s, *j) {
+ char *y;
+ Set *x;
+
+ x = hashmap_get2(u->manager->units_requiring_mounts_for, s, (void**) &y);
+ if (!x)
+ continue;
+
+ set_remove(x, u);
+
+ if (set_isempty(x)) {
+ hashmap_remove(u->manager->units_requiring_mounts_for, y);
+ free(y);
+ set_free(x);
+ }
+ }
+ }
+
+ strv_free(u->requires_mounts_for);
+ u->requires_mounts_for = NULL;
+}
+
void unit_free(Unit *u) {
UnitDependency d;
Iterator i;
assert(u);
+ if (u->manager->n_reloading <= 0)
+ unit_remove_transient(u);
+
bus_unit_send_removed_signal(u);
if (u->load_state != UNIT_STUB)
if (UNIT_VTABLE(u)->done)
UNIT_VTABLE(u)->done(u);
+ unit_free_requires_mounts_for(u);
+
SET_FOREACH(t, u->names, i)
hashmap_remove_value(u->manager->units, t, u);
for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++)
bidi_set_free(u, u->dependencies[d]);
- if (u->requires_mounts_for) {
- LIST_REMOVE(Unit, has_requires_mounts_for, u->manager->has_requires_mounts_for, u);
- strv_free(u->requires_mounts_for);
- }
-
if (u->type != _UNIT_TYPE_INVALID)
LIST_REMOVE(Unit, units_by_type, u->manager->units_by_type[u->type], u);
if (u->in_cgroup_queue)
LIST_REMOVE(Unit, cgroup_queue, u->manager->cgroup_queue, u);
- free(u->cgroup_path);
+ if (u->cgroup_path) {
+ hashmap_remove(u->manager->cgroup_unit, u->cgroup_path);
+ free(u->cgroup_path);
+ }
+
free(u->description);
strv_free(u->documentation);
free(u->fragment_path);
return -EINVAL;
if (other->load_state != UNIT_STUB &&
- other->load_state != UNIT_ERROR)
+ other->load_state != UNIT_NOT_FOUND)
return -EEXIST;
if (other->job)
int unit_merge_by_name(Unit *u, const char *name) {
Unit *other;
int r;
- char *s = NULL;
+ _cleanup_free_ char *s = NULL;
assert(u);
assert(name);
name = s;
}
- if (!(other = manager_get_unit(u->manager, name)))
+ other = manager_get_unit(u->manager, name);
+ if (!other)
r = unit_add_name(u, name);
else
r = unit_merge(u, other);
- free(s);
return r;
}
char *t, **j;
UnitDependency d;
Iterator i;
- char *p2;
+ _cleanup_free_ char *p2 = NULL;
const char *prefix2;
char
timestamp1[FORMAT_TIMESTAMP_MAX],
"%s\tInactive Enter Timestamp: %s\n"
"%s\tGC Check Good: %s\n"
"%s\tNeed Daemon Reload: %s\n"
+ "%s\tTransient: %s\n"
"%s\tSlice: %s\n"
"%s\tCGroup: %s\n"
"%s\tCGroup realized: %s\n"
prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->inactive_enter_timestamp.realtime)),
prefix, yes_no(unit_check_gc(u)),
prefix, yes_no(unit_need_daemon_reload(u)),
+ prefix, yes_no(u->transient),
prefix, strna(unit_slice_name(u)),
prefix, strna(u->cgroup_path),
prefix, yes_no(u->cgroup_realized),
if (u->nop_job)
job_dump(u->nop_job, f, prefix2);
- free(p2);
}
/* Common implementation for multiple backends */
if (u->load_state != UNIT_STUB)
return 0;
- if (UNIT_VTABLE(u)->load)
- if ((r = UNIT_VTABLE(u)->load(u)) < 0)
+ if (UNIT_VTABLE(u)->load) {
+ r = UNIT_VTABLE(u)->load(u);
+ if (r < 0)
goto fail;
+ }
if (u->load_state == UNIT_STUB) {
r = -ENOENT;
goto fail;
}
- if (u->load_state == UNIT_LOADED &&
- u->default_dependencies)
- if ((r = unit_add_default_dependencies(u)) < 0)
- goto fail;
-
if (u->load_state == UNIT_LOADED) {
+
+ if (u->default_dependencies) {
+ r = unit_add_default_dependencies(u);
+ if (r < 0)
+ goto fail;
+ }
+
r = unit_add_mount_links(u);
if (r < 0)
- return r;
- }
+ goto fail;
- if (u->on_failure_isolate &&
- set_size(u->dependencies[UNIT_ON_FAILURE]) > 1) {
+ if (u->on_failure_isolate &&
+ set_size(u->dependencies[UNIT_ON_FAILURE]) > 1) {
- log_error_unit(u->id,
- "More than one OnFailure= dependencies specified for %s but OnFailureIsolate= enabled. Refusing.", u->id);
+ log_error_unit(u->id,
+ "More than one OnFailure= dependencies specified for %s but OnFailureIsolate= enabled. Refusing.", u->id);
- r = -EINVAL;
- goto fail;
+ r = -EINVAL;
+ goto fail;
+ }
}
assert((u->load_state != UNIT_MERGED) == !u->merged_into);
return 0;
fail:
- u->load_state = UNIT_ERROR;
+ u->load_state = u->load_state == UNIT_STUB ? UNIT_NOT_FOUND : UNIT_ERROR;
u->load_error = r;
unit_add_to_dbus_queue(u);
unit_add_to_gc_queue(u);
assert(u);
dual_timestamp_get(&u->condition_timestamp);
- u->condition_result = condition_test_list(u->conditions);
+ u->condition_result = condition_test_list(u->id, u->conditions);
return u->condition_result;
}
}
/* Forward to the main object, if we aren't it. */
- if ((following = unit_following(u))) {
+ following = unit_following(u);
+ if (following) {
log_debug_unit(u->id, "Redirecting start request from %s to %s.",
u->id, following->id);
return unit_start(following);
if (UNIT_IS_INACTIVE_OR_FAILED(os) != UNIT_IS_INACTIVE_OR_FAILED(ns)) {
ExecContext *ec = unit_get_exec_context(u);
if (ec && exec_context_may_touch_console(ec)) {
- if (UNIT_IS_INACTIVE_OR_FAILED(ns))
- m->n_on_console--;
- else
- m->n_on_console++;
+ if (UNIT_IS_INACTIVE_OR_FAILED(ns)) {
+ m->n_on_console --;
+
+ if (m->n_on_console == 0)
+ /* unset no_console_output flag, since the console is free */
+ m->no_console_output = 0;
+ } else
+ m->n_on_console ++;
}
}
int unit_add_two_dependencies_by_name(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) {
Unit *other;
int r;
- char *s;
+ _cleanup_free_ char *s = NULL;
assert(u);
assert(name || path);
return -ENOMEM;
if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0)
- goto finish;
+ return r;
r = unit_add_two_dependencies(u, d, e, other, add_reference);
-finish:
- free(s);
return r;
}
int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) {
Unit *other;
int r;
- char *s;
+ _cleanup_free_ char *s = NULL;
assert(u);
assert(name || path);
return -ENOMEM;
if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0)
- goto finish;
+ return r;
r = unit_add_dependency(other, d, u, add_reference);
-finish:
- free(s);
return r;
}
int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDependency e, const char *name, const char *path, bool add_reference) {
Unit *other;
int r;
- char *s;
+ _cleanup_free_ char *s = NULL;
assert(u);
assert(name || path);
return -ENOMEM;
if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0)
- goto finish;
+ return r;
if ((r = unit_add_two_dependencies(other, d, e, u, add_reference)) < 0)
- goto finish;
+ return r;
-finish:
- free(s);
return r;
}
}
char *unit_default_cgroup_path(Unit *u) {
- _cleanup_free_ char *escaped_instance = NULL, *slice = NULL;
+ _cleanup_free_ char *escaped = NULL, *slice = NULL;
int r;
assert(u);
return NULL;
}
- escaped_instance = cg_escape(u->id);
- if (!escaped_instance)
+ escaped = cg_escape(u->id);
+ if (!escaped)
return NULL;
- if (u->instance) {
- _cleanup_free_ char *t = NULL, *escaped_template = NULL;
-
- t = unit_name_template(u->id);
- if (!t)
- return NULL;
-
- escaped_template = cg_escape(t);
- if (!escaped_template)
- return NULL;
-
- return strjoin(u->manager->cgroup_root, "/",
- slice ? slice : "", slice ? "/" : "",
- escaped_template, "/", escaped_instance, NULL);
- } else
- return strjoin(u->manager->cgroup_root, "/",
- slice ? slice : "", slice ? "/" : "",
- escaped_instance, NULL);
+ if (slice)
+ return strjoin(u->manager->cgroup_root, "/", slice, "/", escaped, NULL);
+ else
+ return strjoin(u->manager->cgroup_root, "/", escaped, NULL);
}
int unit_add_default_slice(Unit *u) {
+ _cleanup_free_ char *b = NULL;
+ const char *slice_name;
Unit *slice;
int r;
if (!unit_get_cgroup_context(u))
return 0;
- r = manager_load_unit(u->manager, u->manager->running_as == SYSTEMD_SYSTEM ? SPECIAL_SYSTEM_SLICE : SPECIAL_ROOT_SLICE, NULL, NULL, &slice);
+ if (u->instance) {
+ _cleanup_free_ char *prefix = NULL, *escaped = NULL;
+
+ /* Implicitly place all instantiated units in their
+ * own per-template slice */
+
+ prefix = unit_name_to_prefix(u->id);
+ if (!prefix)
+ return -ENOMEM;
+
+ /* The prefix is already escaped, but it might include
+ * "-" which has a special meaning for slice units,
+ * hence escape it here extra. */
+ escaped = strreplace(prefix, "-", "\\x2d");
+ if (!escaped)
+ return -ENOMEM;
+
+ if (u->manager->running_as == SYSTEMD_SYSTEM)
+ b = strjoin("system-", escaped, ".slice", NULL);
+ else
+ b = strappend(escaped, ".slice");
+ if (!b)
+ return -ENOMEM;
+
+ slice_name = b;
+ } else
+ slice_name =
+ u->manager->running_as == SYSTEMD_SYSTEM
+ ? SPECIAL_SYSTEM_SLICE
+ : SPECIAL_ROOT_SLICE;
+
+ r = manager_load_unit(u->manager, slice_name, NULL, NULL, &slice);
if (r < 0)
return r;
if (!unit_can_serialize(u))
return 0;
- if ((r = UNIT_VTABLE(u)->serialize(u, f, fds)) < 0)
+ r = UNIT_VTABLE(u)->serialize(u, f, fds);
+ if (r < 0)
return r;
if (dual_timestamp_is_set(&u->condition_timestamp))
unit_serialize_item(u, f, "condition-result", yes_no(u->condition_result));
+ unit_serialize_item(u, f, "transient", yes_no(u->transient));
+
+ if (u->cgroup_path)
+ unit_serialize_item(u, f, "cgroup", u->cgroup_path);
+
/* End marker */
fputc('\n', f);
return 0;
} else if (streq(l, "condition-result")) {
int b;
- if ((b = parse_boolean(v)) < 0)
+ b = parse_boolean(v);
+ if (b < 0)
log_debug("Failed to parse condition result value %s", v);
else
u->condition_result = b;
continue;
+
+ } else if (streq(l, "transient")) {
+ int b;
+
+ b = parse_boolean(v);
+ if (b < 0)
+ log_debug("Failed to parse transient bool %s", v);
+ else
+ u->transient = b;
+
+ continue;
+ } else if (streq(l, "cgroup")) {
+ char *s;
+
+ s = strdup(v);
+ if (!s)
+ return -ENOMEM;
+
+ free(u->cgroup_path);
+ u->cgroup_path = s;
+
+ assert(hashmap_put(u->manager->cgroup_unit, s, u) == 1);
+ continue;
}
- if ((r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds)) < 0)
+ r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds);
+ if (r < 0)
return r;
}
}
int unit_add_node_link(Unit *u, const char *what, bool wants) {
Unit *device;
- char *e;
+ _cleanup_free_ char *e = NULL;
int r;
assert(u);
return -ENOMEM;
r = manager_load_unit(u->manager, e, NULL, NULL, &device);
- free(e);
+
if (r < 0)
return r;
return UNIT_VTABLE(u)->kill(u, w, signo, error);
}
+static Set *unit_pid_set(pid_t main_pid, pid_t control_pid) {
+ Set *pid_set;
+ int r;
+
+ pid_set = set_new(trivial_hash_func, trivial_compare_func);
+ if (!pid_set)
+ return NULL;
+
+ /* Exclude the main/control pids from being killed via the cgroup */
+ if (main_pid > 0) {
+ r = set_put(pid_set, LONG_TO_PTR(main_pid));
+ if (r < 0)
+ goto fail;
+ }
+
+ if (control_pid > 0) {
+ r = set_put(pid_set, LONG_TO_PTR(control_pid));
+ if (r < 0)
+ goto fail;
+ }
+
+ return pid_set;
+
+fail:
+ set_free(pid_set);
+ return NULL;
+}
+
int unit_kill_common(
Unit *u,
KillWho who,
_cleanup_set_free_ Set *pid_set = NULL;
int q;
- pid_set = set_new(trivial_hash_func, trivial_compare_func);
+ /* Exclude the main/control pids from being killed via the cgroup */
+ pid_set = unit_pid_set(main_pid, control_pid);
if (!pid_set)
return -ENOMEM;
- /* Exclude the control/main pid from being killed via the cgroup */
- if (control_pid > 0) {
- q = set_put(pid_set, LONG_TO_PTR(control_pid));
- if (q < 0)
- return q;
- }
-
- if (main_pid > 0) {
- q = set_put(pid_set, LONG_TO_PTR(main_pid));
- if (q < 0)
- return q;
- }
-
q = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, signo, false, true, false, pid_set);
if (q < 0 && q != -EAGAIN && q != -ESRCH && q != -ENOENT)
r = q;
ref->unit = NULL;
}
-int unit_add_one_mount_link(Unit *u, Mount *m) {
+int unit_add_mount_links(Unit *u) {
char **i;
+ int r;
assert(u);
- assert(m);
-
- if (u->load_state != UNIT_LOADED ||
- UNIT(m)->load_state != UNIT_LOADED)
- return 0;
STRV_FOREACH(i, u->requires_mounts_for) {
+ char prefix[strlen(*i) + 1];
- if (UNIT(m) == u)
- continue;
+ PATH_FOREACH_PREFIX_MORE(prefix, *i) {
+ Unit *m;
- if (!path_startswith(*i, m->where))
- continue;
-
- return unit_add_two_dependencies(u, UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true);
- }
-
- return 0;
-}
+ r = manager_get_unit_by_path(u->manager, prefix, ".mount", &m);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ continue;
+ if (m == u)
+ continue;
-int unit_add_mount_links(Unit *u) {
- Unit *other;
- int r;
+ if (m->load_state != UNIT_LOADED)
+ continue;
- assert(u);
+ r = unit_add_dependency(u, UNIT_AFTER, m, true);
+ if (r < 0)
+ return r;
- LIST_FOREACH(units_by_type, other, u->manager->units_by_type[UNIT_MOUNT]) {
- r = unit_add_one_mount_link(u, MOUNT(other));
- if (r < 0)
- return r;
+ if (m->fragment_path) {
+ r = unit_add_dependency(u, UNIT_REQUIRES, m, true);
+ if (r < 0)
+ return r;
+ }
+ }
}
return 0;
}
static int drop_in_file(Unit *u, UnitSetPropertiesMode mode, const char *name, char **_p, char **_q) {
+ _cleanup_free_ char *b = NULL;
char *p, *q;
int r;
assert(_q);
assert(mode & (UNIT_PERSISTENT|UNIT_RUNTIME));
- if (u->manager->running_as == SYSTEMD_USER && !(mode & UNIT_PERSISTENT))
- return -ENOTSUP;
+ b = xescape(name, "/.");
+ if (!b)
+ return -ENOMEM;
- if (!filename_is_safe(name))
+ if (!filename_is_safe(b))
return -EINVAL;
if (u->manager->running_as == SYSTEMD_USER) {
return -ENOENT;
p = strjoin(c, "/", u->id, ".d", NULL);
- } else if (mode & UNIT_PERSISTENT)
+ } else if (mode & UNIT_PERSISTENT)
p = strjoin("/etc/systemd/system/", u->id, ".d", NULL);
else
p = strjoin("/run/systemd/system/", u->id, ".d", NULL);
if (!p)
return -ENOMEM;
- q = strjoin(p, "/90-", name, ".conf", NULL);
+ q = strjoin(p, "/90-", b, ".conf", NULL);
if (!q) {
free(p);
return -ENOMEM;
return write_string_file_atomic_label(q, data);
}
-int unit_write_drop_in_private_section(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) {
+int unit_write_drop_in_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) {
+ _cleanup_free_ char *p = NULL;
+ va_list ap;
+ int r;
+
+ assert(u);
+ assert(name);
+ assert(format);
+
+ if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME)))
+ return 0;
+
+ va_start(ap, format);
+ r = vasprintf(&p, format, ap);
+ va_end(ap);
+
+ if (r < 0)
+ return -ENOMEM;
+
+ return unit_write_drop_in(u, mode, name, p);
+}
+
+int unit_write_drop_in_private(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) {
_cleanup_free_ char *ndata = NULL;
assert(u);
if (!UNIT_VTABLE(u)->private_section)
return -EINVAL;
+ if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME)))
+ return 0;
+
ndata = strjoin("[", UNIT_VTABLE(u)->private_section, "]\n", data, NULL);
if (!ndata)
return -ENOMEM;
return unit_write_drop_in(u, mode, name, ndata);
}
+int unit_write_drop_in_private_format(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *format, ...) {
+ _cleanup_free_ char *p = NULL;
+ va_list ap;
+ int r;
+
+ assert(u);
+ assert(name);
+ assert(format);
+
+ if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME)))
+ return 0;
+
+ va_start(ap, format);
+ r = vasprintf(&p, format, ap);
+ va_end(ap);
+
+ if (r < 0)
+ return -ENOMEM;
+
+ return unit_write_drop_in_private(u, mode, name, p);
+}
+
int unit_remove_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name) {
_cleanup_free_ char *p = NULL, *q = NULL;
int r;
return 0;
r = drop_in_file(u, mode, name, &p, &q);
+ if (r < 0)
+ return r;
+
if (unlink(q) < 0)
r = errno == ENOENT ? 0 : -errno;
else
return r;
}
+int unit_make_transient(Unit *u) {
+ int r;
+
+ assert(u);
+
+ u->load_state = UNIT_STUB;
+ u->load_error = 0;
+ u->transient = true;
+
+ free(u->fragment_path);
+ u->fragment_path = NULL;
+
+ if (u->manager->running_as == SYSTEMD_USER) {
+ _cleanup_free_ char *c = NULL;
+
+ r = user_config_home(&c);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return -ENOENT;
+
+ u->fragment_path = strjoin(c, "/", u->id, NULL);
+ if (!u->fragment_path)
+ return -ENOMEM;
+
+ mkdir_p(c, 0755);
+ } else {
+ u->fragment_path = strappend("/run/systemd/system/", u->id);
+ if (!u->fragment_path)
+ return -ENOMEM;
+
+ mkdir_p("/run/systemd/system", 0755);
+ }
+
+ return write_string_file_atomic_label(u->fragment_path, "# Transient stub");
+}
+
int unit_kill_context(
Unit *u,
KillContext *c,
log_warning_unit(u->id, "Failed to kill main process %li (%s): %s",
(long) main_pid, strna(comm), strerror(-r));
- } else
+ } else {
wait_for_exit = !main_pid_alien;
+
+ if (c->send_sighup)
+ kill(main_pid, SIGHUP);
+ }
}
if (control_pid > 0) {
log_warning_unit(u->id,
"Failed to kill control process %li (%s): %s",
(long) control_pid, strna(comm), strerror(-r));
- } else
+ } else {
wait_for_exit = true;
+
+ if (c->send_sighup)
+ kill(control_pid, SIGHUP);
+ }
}
if (c->kill_mode == KILL_CONTROL_GROUP && u->cgroup_path) {
_cleanup_set_free_ Set *pid_set = NULL;
- pid_set = set_new(trivial_hash_func, trivial_compare_func);
+ /* Exclude the main/control pids from being killed via the cgroup */
+ pid_set = unit_pid_set(main_pid, control_pid);
if (!pid_set)
return -ENOMEM;
- /* Exclude the main/control pids from being killed via the cgroup */
- if (main_pid > 0) {
- r = set_put(pid_set, LONG_TO_PTR(main_pid));
- if (r < 0)
- return r;
- }
-
- if (control_pid > 0) {
- r = set_put(pid_set, LONG_TO_PTR(control_pid));
- if (r < 0)
- return r;
- }
-
r = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, sig, true, true, false, pid_set);
if (r < 0) {
if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
log_warning_unit(u->id, "Failed to kill control group: %s", strerror(-r));
- } else if (r > 0)
+ } else if (r > 0) {
wait_for_exit = true;
+ if (c->send_sighup) {
+ set_free(pid_set);
+
+ pid_set = unit_pid_set(main_pid, control_pid);
+ if (!pid_set)
+ return -ENOMEM;
+
+ cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, SIGHUP, true, true, false, pid_set);
+ }
+ }
}
return wait_for_exit;
}
+int unit_require_mounts_for(Unit *u, const char *path) {
+ char prefix[strlen(path) + 1], *p;
+ int r;
+
+ assert(u);
+ assert(path);
+
+ /* Registers a unit for requiring a certain path and all its
+ * prefixes. We keep a simple array of these paths in the
+ * unit, since its usually short. However, we build a prefix
+ * table for all possible prefixes so that new appearing mount
+ * units can easily determine which units to make themselves a
+ * dependency of. */
+
+ p = strdup(path);
+ if (!p)
+ return -ENOMEM;
+
+ path_kill_slashes(p);
+
+ if (!path_is_absolute(p)) {
+ free(p);
+ return -EINVAL;
+ }
+
+ if (!path_is_safe(p)) {
+ free(p);
+ return -EPERM;
+ }
+
+ if (strv_contains(u->requires_mounts_for, p)) {
+ free(p);
+ return 0;
+ }
+
+ r = strv_push(&u->requires_mounts_for, p);
+ if (r < 0) {
+ free(p);
+ return r;
+ }
+
+ PATH_FOREACH_PREFIX_MORE(prefix, p) {
+ Set *x;
+
+ x = hashmap_get(u->manager->units_requiring_mounts_for, prefix);
+ if (!x) {
+ char *q;
+
+ if (!u->manager->units_requiring_mounts_for) {
+ u->manager->units_requiring_mounts_for = hashmap_new(string_hash_func, string_compare_func);
+ if (!u->manager->units_requiring_mounts_for)
+ return -ENOMEM;
+ }
+
+ q = strdup(prefix);
+ if (!q)
+ return -ENOMEM;
+
+ x = set_new(NULL, NULL);
+ if (!x) {
+ free(q);
+ return -ENOMEM;
+ }
+
+ r = hashmap_put(u->manager->units_requiring_mounts_for, q, x);
+ if (r < 0) {
+ free(q);
+ set_free(x);
+ return r;
+ }
+ }
+
+ r = set_put(x, u);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = {
[UNIT_ACTIVE] = "active",
[UNIT_RELOADING] = "reloading",
~ianmdlvl / elogind.git / blobdiff