#include "log.h"
#include "unit-name.h"
#include "specifier.h"
+#include "dbus-unit.h"
const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = {
[UNIT_SERVICE] = &service_vtable,
goto fail;
}
+ if (hashmap_size(u->meta.manager->units) >= MANAGER_MAX_NAMES) {
+ r = -E2BIG;
+ goto fail;
+ }
+
if ((r = set_put(u->meta.names, s)) < 0) {
if (r == -EEXIST)
r = 0;
return 0;
}
+bool unit_check_gc(Unit *u) {
+ assert(u);
+
+ if (UNIT_VTABLE(u)->no_gc)
+ return true;
+
+ if (u->meta.job)
+ return true;
+
+ if (unit_active_state(u) != UNIT_INACTIVE)
+ return true;
+
+ if (UNIT_VTABLE(u)->check_gc)
+ if (UNIT_VTABLE(u)->check_gc(u))
+ return true;
+
+ return false;
+}
+
void unit_add_to_load_queue(Unit *u) {
assert(u);
assert(u->meta.type != _UNIT_TYPE_INVALID);
u->meta.in_cleanup_queue = true;
}
+void unit_add_to_gc_queue(Unit *u) {
+ assert(u);
+
+ if (u->meta.in_gc_queue || u->meta.in_cleanup_queue)
+ return;
+
+ if (unit_check_gc(u))
+ return;
+
+ LIST_PREPEND(Meta, gc_queue, u->meta.manager->gc_queue, &u->meta);
+ u->meta.in_gc_queue = true;
+
+ u->meta.manager->n_in_gc_queue ++;
+
+ if (u->meta.manager->gc_queue_timestamp <= 0)
+ u->meta.manager->gc_queue_timestamp = now(CLOCK_MONOTONIC);
+}
+
void unit_add_to_dbus_queue(Unit *u) {
assert(u);
assert(u->meta.type != _UNIT_TYPE_INVALID);
for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++)
set_remove(other->meta.dependencies[d], u);
+
+ unit_add_to_gc_queue(other);
}
set_free(s);
if (u->meta.in_cleanup_queue)
LIST_REMOVE(Meta, cleanup_queue, u->meta.manager->cleanup_queue, &u->meta);
+ if (u->meta.in_gc_queue) {
+ LIST_REMOVE(Meta, gc_queue, u->meta.manager->gc_queue, &u->meta);
+ u->meta.manager->n_in_gc_queue--;
+ }
+
/* Free data and next 'smaller' objects */
if (u->meta.job)
job_free(u->meta.job);
/* If syslog or kernel logging is requested, make sure our own
* logging daemon is run first. */
- if ((r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_LOGGER_SOCKET, NULL)) < 0)
+ if ((r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_LOGGER_SOCKET, NULL, true)) < 0)
return r;
if (u->meta.manager->running_as != MANAGER_SESSION)
- if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_LOGGER_SOCKET, NULL)) < 0)
+ if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_LOGGER_SOCKET, NULL, true)) < 0)
return r;
return 0;
prefix2 = p2 ? p2 : prefix;
fprintf(f,
- "%s→ Unit %s:\n"
+ "%s-> Unit %s:\n"
"%s\tDescription: %s\n"
"%s\tInstance: %s\n"
"%s\tUnit Load State: %s\n"
"%s\tUnit Active State: %s\n"
"%s\tActive Enter Timestamp: %s\n"
- "%s\tActive Exit Timestamp: %s\n",
+ "%s\tActive Exit Timestamp: %s\n"
+ "%s\tGC Check Good: %s\n",
prefix, u->meta.id,
prefix, unit_description(u),
prefix, strna(u->meta.instance),
prefix, unit_load_state_to_string(u->meta.load_state),
prefix, unit_active_state_to_string(unit_active_state(u)),
prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->meta.active_enter_timestamp)),
- prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->meta.active_exit_timestamp)));
+ prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->meta.active_exit_timestamp)),
+ prefix, yes_no(unit_check_gc(u)));
SET_FOREACH(t, u->meta.names, i)
fprintf(f, "%s\tName: %s\n", prefix, t);
return 0;
}
+/* Common implementation for multiple backends */
+int unit_load_nop(Unit *u) {
+ assert(u);
+
+ if (u->meta.load_state == UNIT_STUB)
+ u->meta.load_state = UNIT_LOADED;
+
+ return 0;
+}
+
int unit_load(Unit *u) {
int r;
assert((u->meta.load_state != UNIT_MERGED) == !u->meta.merged_into);
unit_add_to_dbus_queue(unit_follow_merge(u));
+ unit_add_to_gc_queue(u);
return 0;
unit_check_uneeded(u);
unit_add_to_dbus_queue(u);
+ unit_add_to_gc_queue(u);
}
int unit_watch_fd(Unit *u, int fd, uint32_t events, Watch *w) {
assert(u);
assert(pid >= 1);
+ /* Watch a specific PID. We only support one unit watching
+ * each PID for now. */
+
return hashmap_put(u->meta.manager->watch_pids, UINT32_TO_PTR(pid), u);
}
assert(u);
assert(pid >= 1);
- hashmap_remove(u->meta.manager->watch_pids, UINT32_TO_PTR(pid));
+ hashmap_remove_value(u->meta.manager->watch_pids, UINT32_TO_PTR(pid), u);
}
int unit_watch_timer(Unit *u, usec_t delay, Watch *w) {
assert(w->type == WATCH_TIMER && w->data.unit == u);
assert_se(epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0);
- assert_se(close_nointr(w->fd) == 0);
+ close_nointr_nofail(w->fd);
w->fd = -1;
w->type = WATCH_INVALID;
}
}
-int unit_add_dependency(Unit *u, UnitDependency d, Unit *other) {
+int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) {
static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = {
[UNIT_REQUIRES] = UNIT_REQUIRED_BY,
[UNIT_WANTED_BY] = _UNIT_DEPENDENCY_INVALID,
[UNIT_CONFLICTS] = UNIT_CONFLICTS,
[UNIT_BEFORE] = UNIT_AFTER,
- [UNIT_AFTER] = UNIT_BEFORE
+ [UNIT_AFTER] = UNIT_BEFORE,
+ [UNIT_REFERENCES] = UNIT_REFERENCED_BY,
+ [UNIT_REFERENCED_BY] = UNIT_REFERENCES
};
- int r;
+ int r, q = 0, v = 0, w = 0;
assert(u);
assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX);
return -EINVAL;
}
- if ((r = set_ensure_allocated(&u->meta.dependencies[d], trivial_hash_func, trivial_compare_func)) < 0)
+ if ((r = set_ensure_allocated(&u->meta.dependencies[d], trivial_hash_func, trivial_compare_func)) < 0 ||
+ (r = set_ensure_allocated(&other->meta.dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func)) < 0)
return r;
- if ((r = set_ensure_allocated(&other->meta.dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func)) < 0)
- return r;
+ if (add_reference)
+ if ((r = set_ensure_allocated(&u->meta.dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func)) < 0 ||
+ (r = set_ensure_allocated(&other->meta.dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func)) < 0)
+ return r;
- if ((r = set_put(u->meta.dependencies[d], other)) < 0)
- return r;
+ if ((q = set_put(u->meta.dependencies[d], other)) < 0)
+ return q;
- if ((r = set_put(other->meta.dependencies[inverse_table[d]], u)) < 0) {
- set_remove(u->meta.dependencies[d], other);
- return r;
+ if ((v = set_put(other->meta.dependencies[inverse_table[d]], u)) < 0) {
+ r = v;
+ goto fail;
+ }
+
+ if (add_reference) {
+ if ((w = set_put(u->meta.dependencies[UNIT_REFERENCES], other)) < 0) {
+ r = w;
+ goto fail;
+ }
+
+ if ((r = set_put(other->meta.dependencies[UNIT_REFERENCED_BY], u)) < 0)
+ goto fail;
}
unit_add_to_dbus_queue(u);
return 0;
+
+fail:
+ if (q > 0)
+ set_remove(u->meta.dependencies[d], other);
+
+ if (v > 0)
+ set_remove(other->meta.dependencies[inverse_table[d]], u);
+
+ if (w > 0)
+ set_remove(u->meta.dependencies[UNIT_REFERENCES], other);
+
+ return r;
}
static const char *resolve_template(Unit *u, const char *name, const char*path, char **p) {
return s;
}
-int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path) {
+int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) {
Unit *other;
int r;
char *s;
if ((r = manager_load_unit(u->meta.manager, name, path, &other)) < 0)
goto finish;
- r = unit_add_dependency(u, d, other);
+ r = unit_add_dependency(u, d, 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) {
+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;
if ((r = manager_load_unit(u->meta.manager, name, path, &other)) < 0)
goto finish;
- r = unit_add_dependency(other, d, u);
+ r = unit_add_dependency(other, d, u, add_reference);
finish:
free(s);
static char *default_cgroup_path(Unit *u) {
char *p;
+ int r;
assert(u);
- if (asprintf(&p, "%s/%s", u->meta.manager->cgroup_hierarchy, u->meta.id) < 0)
- return NULL;
+ if (u->meta.instance) {
+ char *t;
- return p;
+ if (!(t = unit_name_template(u->meta.id)))
+ return NULL;
+
+ r = asprintf(&p, "%s/%s/%s", u->meta.manager->cgroup_hierarchy, t, u->meta.instance);
+ free(t);
+ } else
+ r = asprintf(&p, "%s/%s", u->meta.manager->cgroup_hierarchy, u->meta.id);
+
+ return r < 0 ? NULL : p;
}
int unit_add_cgroup_from_text(Unit *u, const char *name) {
return r;
}
+int unit_get_related_unit(Unit *u, const char *type, Unit **_found) {
+ Unit *found;
+ char *t;
+
+ assert(u);
+ assert(type);
+ assert(_found);
+
+ if (!(t = unit_name_change_suffix(u->meta.id, type)))
+ return -ENOMEM;
+
+ assert(!unit_has_name(u, t));
+
+ found = manager_get_unit(u->meta.manager, t);
+ free(t);
+
+ if (!found)
+ return -ENOENT;
+
+ *_found = found;
+ return 0;
+}
+
static char *specifier_prefix_and_instance(char specifier, void *data, void *userdata) {
Unit *u = userdata;
assert(u);
return NULL;
}
+int unit_watch_bus_name(Unit *u, const char *name) {
+ assert(u);
+ assert(name);
+
+ /* Watch a specific name on the bus. We only support one unit
+ * watching each name for now. */
+
+ return hashmap_put(u->meta.manager->watch_bus, name, u);
+}
+
+void unit_unwatch_bus_name(Unit *u, const char *name) {
+ assert(u);
+ assert(name);
+
+ hashmap_remove_value(u->meta.manager->watch_bus, name, u);
+}
+
+bool unit_can_serialize(Unit *u) {
+ assert(u);
+
+ return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item;
+}
+
+int unit_serialize(Unit *u, FILE *f, FDSet *fds) {
+ int r;
+
+ assert(u);
+ assert(f);
+ assert(fds);
+
+ if (!unit_can_serialize(u))
+ return 0;
+
+ if ((r = UNIT_VTABLE(u)->serialize(u, f, fds)) < 0)
+ return r;
+
+ /* End marker */
+ fputc('\n', f);
+ return 0;
+}
+
+void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) {
+ va_list ap;
+
+ assert(u);
+ assert(f);
+ assert(key);
+ assert(format);
+
+ fputs(key, f);
+ fputc('=', f);
+
+ va_start(ap, format);
+ vfprintf(f, format, ap);
+ va_end(ap);
+
+ fputc('\n', f);
+}
+
+void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) {
+ assert(u);
+ assert(f);
+ assert(key);
+ assert(value);
+
+ fprintf(f, "%s=%s\n", key, value);
+}
+
+int unit_deserialize(Unit *u, FILE *f, FDSet *fds) {
+ int r;
+
+ assert(u);
+ assert(f);
+ assert(fds);
+
+ if (!unit_can_serialize(u))
+ return 0;
+
+ for (;;) {
+ char line[1024], *l, *v;
+ size_t k;
+
+ if (!fgets(line, sizeof(line), f)) {
+ if (feof(f))
+ return 0;
+ return -errno;
+ }
+
+ l = strstrip(line);
+
+ /* End marker */
+ if (l[0] == 0)
+ return 0;
+
+ k = strcspn(l, "=");
+
+ if (l[k] == '=') {
+ l[k] = 0;
+ v = l+k+1;
+ } else
+ v = l+k;
+
+ if ((r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds)) < 0)
+ return r;
+ }
+}
+
+
static const char* const unit_type_table[_UNIT_TYPE_MAX] = {
[UNIT_SERVICE] = "service",
[UNIT_TIMER] = "timer",
[UNIT_CONFLICTS] = "Conflicts",
[UNIT_BEFORE] = "Before",
[UNIT_AFTER] = "After",
+ [UNIT_REFERENCES] = "References",
+ [UNIT_REFERENCED_BY] = "ReferencedBy"
};
DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency);
~ianmdlvl / elogind.git / blobdiff