diff options
| author | Kay Sievers <kay@vrfy.org> | 2012-04-11 12:59:52 +0200 |
|---|---|---|
| committer | Kay Sievers <kay@vrfy.org> | 2012-04-11 16:03:51 +0200 |
| commit | b30e2f4c18ad81b04e4314fd191a5d458553773c (patch) | |
| tree | de15b901a08d681a7a1e95c7a2d692b0ec181708 /src/unit.c | |
| parent | 9543ad166338a7bef8718070f11465df4b9badd7 (diff) | |
move libsystemd_core.la sources into core/
Diffstat (limited to 'src/unit.c')
| -rw-r--r-- | src/unit.c | 2676 |
1 files changed, 0 insertions, 2676 deletions
diff --git a/src/unit.c b/src/unit.c deleted file mode 100644 index 9e33701c8f..0000000000 --- a/src/unit.c +++ /dev/null @@ -1,2676 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <assert.h> -#include <errno.h> -#include <string.h> -#include <sys/epoll.h> -#include <sys/timerfd.h> -#include <sys/poll.h> -#include <stdlib.h> -#include <unistd.h> -#include <sys/stat.h> - -#include "set.h" -#include "unit.h" -#include "macro.h" -#include "strv.h" -#include "load-fragment.h" -#include "load-dropin.h" -#include "log.h" -#include "unit-name.h" -#include "specifier.h" -#include "dbus-unit.h" -#include "special.h" -#include "cgroup-util.h" -#include "missing.h" -#include "cgroup-attr.h" - -const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = { - [UNIT_SERVICE] = &service_vtable, - [UNIT_TIMER] = &timer_vtable, - [UNIT_SOCKET] = &socket_vtable, - [UNIT_TARGET] = &target_vtable, - [UNIT_DEVICE] = &device_vtable, - [UNIT_MOUNT] = &mount_vtable, - [UNIT_AUTOMOUNT] = &automount_vtable, - [UNIT_SNAPSHOT] = &snapshot_vtable, - [UNIT_SWAP] = &swap_vtable, - [UNIT_PATH] = &path_vtable -}; - -Unit *unit_new(Manager *m, size_t size) { - Unit *u; - - assert(m); - assert(size >= sizeof(Unit)); - - u = malloc0(size); - if (!u) - return NULL; - - u->names = set_new(string_hash_func, string_compare_func); - if (!u->names) { - free(u); - return NULL; - } - - u->manager = m; - u->type = _UNIT_TYPE_INVALID; - u->deserialized_job = _JOB_TYPE_INVALID; - u->default_dependencies = true; - u->unit_file_state = _UNIT_FILE_STATE_INVALID; - - return u; -} - -bool unit_has_name(Unit *u, const char *name) { - assert(u); - assert(name); - - return !!set_get(u->names, (char*) name); -} - -int unit_add_name(Unit *u, const char *text) { - UnitType t; - char *s, *i = NULL; - int r; - - assert(u); - assert(text); - - if (unit_name_is_template(text)) { - if (!u->instance) - return -EINVAL; - - s = unit_name_replace_instance(text, u->instance); - } else - s = strdup(text); - - if (!s) - return -ENOMEM; - - if (!unit_name_is_valid(s, false)) { - r = -EINVAL; - goto fail; - } - - assert_se((t = unit_name_to_type(s)) >= 0); - - if (u->type != _UNIT_TYPE_INVALID && t != u->type) { - r = -EINVAL; - goto fail; - } - - if ((r = unit_name_to_instance(s, &i)) < 0) - goto fail; - - if (i && unit_vtable[t]->no_instances) { - r = -EINVAL; - goto fail; - } - - /* Ensure that this unit is either instanced or not instanced, - * but not both. */ - if (u->type != _UNIT_TYPE_INVALID && !u->instance != !i) { - r = -EINVAL; - goto fail; - } - - if (unit_vtable[t]->no_alias && - !set_isempty(u->names) && - !set_get(u->names, s)) { - r = -EEXIST; - goto fail; - } - - if (hashmap_size(u->manager->units) >= MANAGER_MAX_NAMES) { - r = -E2BIG; - goto fail; - } - - if ((r = set_put(u->names, s)) < 0) { - if (r == -EEXIST) - r = 0; - goto fail; - } - - if ((r = hashmap_put(u->manager->units, s, u)) < 0) { - set_remove(u->names, s); - goto fail; - } - - if (u->type == _UNIT_TYPE_INVALID) { - - u->type = t; - u->id = s; - u->instance = i; - - LIST_PREPEND(Unit, units_by_type, u->manager->units_by_type[t], u); - - if (UNIT_VTABLE(u)->init) - UNIT_VTABLE(u)->init(u); - } else - free(i); - - unit_add_to_dbus_queue(u); - return 0; - -fail: - free(s); - free(i); - - return r; -} - -int unit_choose_id(Unit *u, const char *name) { - char *s, *t = NULL, *i; - int r; - - assert(u); - assert(name); - - if (unit_name_is_template(name)) { - - if (!u->instance) - return -EINVAL; - - if (!(t = unit_name_replace_instance(name, u->instance))) - return -ENOMEM; - - name = t; - } - - /* Selects one of the names of this unit as the id */ - s = set_get(u->names, (char*) name); - free(t); - - if (!s) - return -ENOENT; - - if ((r = unit_name_to_instance(s, &i)) < 0) - return r; - - u->id = s; - - free(u->instance); - u->instance = i; - - unit_add_to_dbus_queue(u); - - return 0; -} - -int unit_set_description(Unit *u, const char *description) { - char *s; - - assert(u); - - if (!(s = strdup(description))) - return -ENOMEM; - - free(u->description); - u->description = s; - - unit_add_to_dbus_queue(u); - return 0; -} - -bool unit_check_gc(Unit *u) { - assert(u); - - if (u->load_state == UNIT_STUB) - return true; - - if (UNIT_VTABLE(u)->no_gc) - return true; - - if (u->no_gc) - return true; - - if (u->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->type != _UNIT_TYPE_INVALID); - - if (u->load_state != UNIT_STUB || u->in_load_queue) - return; - - LIST_PREPEND(Unit, load_queue, u->manager->load_queue, u); - u->in_load_queue = true; -} - -void unit_add_to_cleanup_queue(Unit *u) { - assert(u); - - if (u->in_cleanup_queue) - return; - - LIST_PREPEND(Unit, cleanup_queue, u->manager->cleanup_queue, u); - u->in_cleanup_queue = true; -} - -void unit_add_to_gc_queue(Unit *u) { - assert(u); - - if (u->in_gc_queue || u->in_cleanup_queue) - return; - - if (unit_check_gc(u)) - return; - - LIST_PREPEND(Unit, gc_queue, u->manager->gc_queue, u); - 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) { - assert(u); - assert(u->type != _UNIT_TYPE_INVALID); - - if (u->load_state == UNIT_STUB || u->in_dbus_queue) - return; - - /* Shortcut things if nobody cares */ - if (!bus_has_subscriber(u->manager)) { - u->sent_dbus_new_signal = true; - return; - } - - LIST_PREPEND(Unit, dbus_queue, u->manager->dbus_unit_queue, u); - u->in_dbus_queue = true; -} - -static void bidi_set_free(Unit *u, Set *s) { - Iterator i; - Unit *other; - - assert(u); - - /* Frees the set and makes sure we are dropped from the - * inverse pointers */ - - SET_FOREACH(other, s, i) { - UnitDependency d; - - for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) - set_remove(other->dependencies[d], u); - - unit_add_to_gc_queue(other); - } - - set_free(s); -} - -void unit_free(Unit *u) { - UnitDependency d; - Iterator i; - char *t; - - assert(u); - - bus_unit_send_removed_signal(u); - - if (u->load_state != UNIT_STUB) - if (UNIT_VTABLE(u)->done) - UNIT_VTABLE(u)->done(u); - - SET_FOREACH(t, u->names, i) - hashmap_remove_value(u->manager->units, t, u); - - if (u->job) - job_free(u->job); - - for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) - bidi_set_free(u, u->dependencies[d]); - - if (u->type != _UNIT_TYPE_INVALID) - LIST_REMOVE(Unit, units_by_type, u->manager->units_by_type[u->type], u); - - if (u->in_load_queue) - LIST_REMOVE(Unit, load_queue, u->manager->load_queue, u); - - if (u->in_dbus_queue) - LIST_REMOVE(Unit, dbus_queue, u->manager->dbus_unit_queue, u); - - if (u->in_cleanup_queue) - LIST_REMOVE(Unit, cleanup_queue, u->manager->cleanup_queue, u); - - if (u->in_gc_queue) { - LIST_REMOVE(Unit, gc_queue, u->manager->gc_queue, u); - u->manager->n_in_gc_queue--; - } - - cgroup_bonding_free_list(u->cgroup_bondings, u->manager->n_reloading <= 0); - cgroup_attribute_free_list(u->cgroup_attributes); - - free(u->description); - free(u->fragment_path); - free(u->instance); - - set_free_free(u->names); - - condition_free_list(u->conditions); - - while (u->refs) - unit_ref_unset(u->refs); - - free(u); -} - -UnitActiveState unit_active_state(Unit *u) { - assert(u); - - if (u->load_state == UNIT_MERGED) - return unit_active_state(unit_follow_merge(u)); - - /* After a reload it might happen that a unit is not correctly - * loaded but still has a process around. That's why we won't - * shortcut failed loading to UNIT_INACTIVE_FAILED. */ - - return UNIT_VTABLE(u)->active_state(u); -} - -const char* unit_sub_state_to_string(Unit *u) { - assert(u); - - return UNIT_VTABLE(u)->sub_state_to_string(u); -} - -static void complete_move(Set **s, Set **other) { - assert(s); - assert(other); - - if (!*other) - return; - - if (*s) - set_move(*s, *other); - else { - *s = *other; - *other = NULL; - } -} - -static void merge_names(Unit *u, Unit *other) { - char *t; - Iterator i; - - assert(u); - assert(other); - - complete_move(&u->names, &other->names); - - set_free_free(other->names); - other->names = NULL; - other->id = NULL; - - SET_FOREACH(t, u->names, i) - assert_se(hashmap_replace(u->manager->units, t, u) == 0); -} - -static void merge_dependencies(Unit *u, Unit *other, UnitDependency d) { - Iterator i; - Unit *back; - int r; - - assert(u); - assert(other); - assert(d < _UNIT_DEPENDENCY_MAX); - - /* Fix backwards pointers */ - SET_FOREACH(back, other->dependencies[d], i) { - UnitDependency k; - - for (k = 0; k < _UNIT_DEPENDENCY_MAX; k++) - if ((r = set_remove_and_put(back->dependencies[k], other, u)) < 0) { - - if (r == -EEXIST) - set_remove(back->dependencies[k], other); - else - assert(r == -ENOENT); - } - } - - complete_move(&u->dependencies[d], &other->dependencies[d]); - - set_free(other->dependencies[d]); - other->dependencies[d] = NULL; -} - -int unit_merge(Unit *u, Unit *other) { - UnitDependency d; - - assert(u); - assert(other); - assert(u->manager == other->manager); - assert(u->type != _UNIT_TYPE_INVALID); - - other = unit_follow_merge(other); - - if (other == u) - return 0; - - if (u->type != other->type) - return -EINVAL; - - if (!u->instance != !other->instance) - return -EINVAL; - - if (other->load_state != UNIT_STUB && - other->load_state != UNIT_ERROR) - return -EEXIST; - - if (other->job) - return -EEXIST; - - if (!UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(other))) - return -EEXIST; - - /* Merge names */ - merge_names(u, other); - - /* Redirect all references */ - while (other->refs) - unit_ref_set(other->refs, u); - - /* Merge dependencies */ - for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) - merge_dependencies(u, other, d); - - other->load_state = UNIT_MERGED; - other->merged_into = u; - - /* If there is still some data attached to the other node, we - * don't need it anymore, and can free it. */ - if (other->load_state != UNIT_STUB) - if (UNIT_VTABLE(other)->done) - UNIT_VTABLE(other)->done(other); - - unit_add_to_dbus_queue(u); - unit_add_to_cleanup_queue(other); - - return 0; -} - -int unit_merge_by_name(Unit *u, const char *name) { - Unit *other; - int r; - char *s = NULL; - - assert(u); - assert(name); - - if (unit_name_is_template(name)) { - if (!u->instance) - return -EINVAL; - - if (!(s = unit_name_replace_instance(name, u->instance))) - return -ENOMEM; - - name = s; - } - - if (!(other = manager_get_unit(u->manager, name))) - r = unit_add_name(u, name); - else - r = unit_merge(u, other); - - free(s); - return r; -} - -Unit* unit_follow_merge(Unit *u) { - assert(u); - - while (u->load_state == UNIT_MERGED) - assert_se(u = u->merged_into); - - return u; -} - -int unit_add_exec_dependencies(Unit *u, ExecContext *c) { - int r; - - assert(u); - assert(c); - - if (c->std_output != EXEC_OUTPUT_KMSG && - c->std_output != EXEC_OUTPUT_SYSLOG && - c->std_output != EXEC_OUTPUT_JOURNAL && - c->std_output != EXEC_OUTPUT_KMSG_AND_CONSOLE && - c->std_output != EXEC_OUTPUT_SYSLOG_AND_CONSOLE && - c->std_output != EXEC_OUTPUT_JOURNAL_AND_CONSOLE && - c->std_error != EXEC_OUTPUT_KMSG && - c->std_error != EXEC_OUTPUT_SYSLOG && - c->std_error != EXEC_OUTPUT_JOURNAL && - c->std_error != EXEC_OUTPUT_KMSG_AND_CONSOLE && - c->std_error != EXEC_OUTPUT_JOURNAL_AND_CONSOLE && - c->std_error != EXEC_OUTPUT_SYSLOG_AND_CONSOLE) - return 0; - - /* If syslog or kernel logging is requested, make sure our own - * logging daemon is run first. */ - - if (u->manager->running_as == MANAGER_SYSTEM) - if ((r = unit_add_two_dependencies_by_name(u, UNIT_REQUIRES, UNIT_AFTER, SPECIAL_JOURNALD_SOCKET, NULL, true)) < 0) - return r; - - return 0; -} - -const char *unit_description(Unit *u) { - assert(u); - - if (u->description) - return u->description; - - return strna(u->id); -} - -void unit_dump(Unit *u, FILE *f, const char *prefix) { - char *t; - UnitDependency d; - Iterator i; - char *p2; - const char *prefix2; - char - timestamp1[FORMAT_TIMESTAMP_MAX], - timestamp2[FORMAT_TIMESTAMP_MAX], - timestamp3[FORMAT_TIMESTAMP_MAX], - timestamp4[FORMAT_TIMESTAMP_MAX], - timespan[FORMAT_TIMESPAN_MAX]; - Unit *following; - - assert(u); - assert(u->type >= 0); - - if (!prefix) - prefix = ""; - p2 = strappend(prefix, "\t"); - prefix2 = p2 ? p2 : prefix; - - fprintf(f, - "%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\tInactive Exit Timestamp: %s\n" - "%s\tActive Enter Timestamp: %s\n" - "%s\tActive Exit Timestamp: %s\n" - "%s\tInactive Enter Timestamp: %s\n" - "%s\tGC Check Good: %s\n" - "%s\tNeed Daemon Reload: %s\n", - prefix, u->id, - prefix, unit_description(u), - prefix, strna(u->instance), - prefix, unit_load_state_to_string(u->load_state), - prefix, unit_active_state_to_string(unit_active_state(u)), - prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->inactive_exit_timestamp.realtime)), - prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->active_enter_timestamp.realtime)), - prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->active_exit_timestamp.realtime)), - 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))); - - SET_FOREACH(t, u->names, i) - fprintf(f, "%s\tName: %s\n", prefix, t); - - if ((following = unit_following(u))) - fprintf(f, "%s\tFollowing: %s\n", prefix, following->id); - - if (u->fragment_path) - fprintf(f, "%s\tFragment Path: %s\n", prefix, u->fragment_path); - - if (u->job_timeout > 0) - fprintf(f, "%s\tJob Timeout: %s\n", prefix, format_timespan(timespan, sizeof(timespan), u->job_timeout)); - - condition_dump_list(u->conditions, f, prefix); - - if (dual_timestamp_is_set(&u->condition_timestamp)) - fprintf(f, - "%s\tCondition Timestamp: %s\n" - "%s\tCondition Result: %s\n", - prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->condition_timestamp.realtime)), - prefix, yes_no(u->condition_result)); - - for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++) { - Unit *other; - - SET_FOREACH(other, u->dependencies[d], i) - fprintf(f, "%s\t%s: %s\n", prefix, unit_dependency_to_string(d), other->id); - } - - if (u->load_state == UNIT_LOADED) { - CGroupBonding *b; - CGroupAttribute *a; - - fprintf(f, - "%s\tStopWhenUnneeded: %s\n" - "%s\tRefuseManualStart: %s\n" - "%s\tRefuseManualStop: %s\n" - "%s\tDefaultDependencies: %s\n" - "%s\tOnFailureIsolate: %s\n" - "%s\tIgnoreOnIsolate: %s\n" - "%s\tIgnoreOnSnapshot: %s\n", - prefix, yes_no(u->stop_when_unneeded), - prefix, yes_no(u->refuse_manual_start), - prefix, yes_no(u->refuse_manual_stop), - prefix, yes_no(u->default_dependencies), - prefix, yes_no(u->on_failure_isolate), - prefix, yes_no(u->ignore_on_isolate), - prefix, yes_no(u->ignore_on_snapshot)); - - LIST_FOREACH(by_unit, b, u->cgroup_bondings) - fprintf(f, "%s\tControlGroup: %s:%s\n", - prefix, b->controller, b->path); - - LIST_FOREACH(by_unit, a, u->cgroup_attributes) { - char *v = NULL; - - if (a->map_callback) - a->map_callback(a->controller, a->name, a->value, &v); - - fprintf(f, "%s\tControlGroupAttribute: %s %s \"%s\"\n", - prefix, a->controller, a->name, v ? v : a->value); - - free(v); - } - - if (UNIT_VTABLE(u)->dump) - UNIT_VTABLE(u)->dump(u, f, prefix2); - - } else if (u->load_state == UNIT_MERGED) - fprintf(f, - "%s\tMerged into: %s\n", - prefix, u->merged_into->id); - else if (u->load_state == UNIT_ERROR) - fprintf(f, "%s\tLoad Error Code: %s\n", prefix, strerror(-u->load_error)); - - - if (u->job) - job_dump(u->job, f, prefix2); - - free(p2); -} - -/* Common implementation for multiple backends */ -int unit_load_fragment_and_dropin(Unit *u) { - int r; - - assert(u); - - /* Load a .service file */ - if ((r = unit_load_fragment(u)) < 0) - return r; - - if (u->load_state == UNIT_STUB) - return -ENOENT; - - /* Load drop-in directory data */ - if ((r = unit_load_dropin(unit_follow_merge(u))) < 0) - return r; - - return 0; -} - -/* Common implementation for multiple backends */ -int unit_load_fragment_and_dropin_optional(Unit *u) { - int r; - - assert(u); - - /* Same as unit_load_fragment_and_dropin(), but whether - * something can be loaded or not doesn't matter. */ - - /* Load a .service file */ - if ((r = unit_load_fragment(u)) < 0) - return r; - - if (u->load_state == UNIT_STUB) - u->load_state = UNIT_LOADED; - - /* Load drop-in directory data */ - if ((r = unit_load_dropin(unit_follow_merge(u))) < 0) - return r; - - return 0; -} - -int unit_add_default_target_dependency(Unit *u, Unit *target) { - assert(u); - assert(target); - - if (target->type != UNIT_TARGET) - return 0; - - /* Only add the dependency if both units are loaded, so that - * that loop check below is reliable */ - if (u->load_state != UNIT_LOADED || - target->load_state != UNIT_LOADED) - return 0; - - /* If either side wants no automatic dependencies, then let's - * skip this */ - if (!u->default_dependencies || - !target->default_dependencies) - return 0; - - /* Don't create loops */ - if (set_get(target->dependencies[UNIT_BEFORE], u)) - return 0; - - return unit_add_dependency(target, UNIT_AFTER, u, true); -} - -static int unit_add_default_dependencies(Unit *u) { - static const UnitDependency deps[] = { - UNIT_REQUIRED_BY, - UNIT_REQUIRED_BY_OVERRIDABLE, - UNIT_WANTED_BY, - UNIT_BOUND_BY - }; - - Unit *target; - Iterator i; - int r; - unsigned k; - - assert(u); - - for (k = 0; k < ELEMENTSOF(deps); k++) - SET_FOREACH(target, u->dependencies[deps[k]], i) - if ((r = unit_add_default_target_dependency(u, target)) < 0) - return r; - - return 0; -} - -int unit_load(Unit *u) { - int r; - - assert(u); - - if (u->in_load_queue) { - LIST_REMOVE(Unit, load_queue, u->manager->load_queue, u); - u->in_load_queue = false; - } - - if (u->type == _UNIT_TYPE_INVALID) - return -EINVAL; - - if (u->load_state != UNIT_STUB) - return 0; - - if (UNIT_VTABLE(u)->load) - if ((r = UNIT_VTABLE(u)->load(u)) < 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->on_failure_isolate && - set_size(u->dependencies[UNIT_ON_FAILURE]) > 1) { - - log_error("More than one OnFailure= dependencies specified for %s but OnFailureIsolate= enabled. Refusing.", - u->id); - - r = -EINVAL; - goto fail; - } - - assert((u->load_state != UNIT_MERGED) == !u->merged_into); - - unit_add_to_dbus_queue(unit_follow_merge(u)); - unit_add_to_gc_queue(u); - - return 0; - -fail: - u->load_state = UNIT_ERROR; - u->load_error = r; - unit_add_to_dbus_queue(u); - unit_add_to_gc_queue(u); - - log_debug("Failed to load configuration for %s: %s", u->id, strerror(-r)); - - return r; -} - -bool unit_condition_test(Unit *u) { - assert(u); - - dual_timestamp_get(&u->condition_timestamp); - u->condition_result = condition_test_list(u->conditions); - - return u->condition_result; -} - -/* Errors: - * -EBADR: This unit type does not support starting. - * -EALREADY: Unit is already started. - * -EAGAIN: An operation is already in progress. Retry later. - * -ECANCELED: Too many requests for now. - */ -int unit_start(Unit *u) { - UnitActiveState state; - Unit *following; - - assert(u); - - if (u->load_state != UNIT_LOADED) - return -EINVAL; - - /* If this is already started, then this will succeed. Note - * that this will even succeed if this unit is not startable - * by the user. This is relied on to detect when we need to - * wait for units and when waiting is finished. */ - state = unit_active_state(u); - if (UNIT_IS_ACTIVE_OR_RELOADING(state)) - return -EALREADY; - - /* If the conditions failed, don't do anything at all. If we - * already are activating this call might still be useful to - * speed up activation in case there is some hold-off time, - * but we don't want to recheck the condition in that case. */ - if (state != UNIT_ACTIVATING && - !unit_condition_test(u)) { - log_debug("Starting of %s requested but condition failed. Ignoring.", u->id); - return -EALREADY; - } - - /* Forward to the main object, if we aren't it. */ - if ((following = unit_following(u))) { - log_debug("Redirecting start request from %s to %s.", u->id, following->id); - return unit_start(following); - } - - /* If it is stopped, but we cannot start it, then fail */ - if (!UNIT_VTABLE(u)->start) - return -EBADR; - - /* We don't suppress calls to ->start() here when we are - * already starting, to allow this request to be used as a - * "hurry up" call, for example when the unit is in some "auto - * restart" state where it waits for a holdoff timer to elapse - * before it will start again. */ - - unit_add_to_dbus_queue(u); - - unit_status_printf(u, NULL, "Starting %s...", unit_description(u)); - return UNIT_VTABLE(u)->start(u); -} - -bool unit_can_start(Unit *u) { - assert(u); - - return !!UNIT_VTABLE(u)->start; -} - -bool unit_can_isolate(Unit *u) { - assert(u); - - return unit_can_start(u) && - u->allow_isolate; -} - -/* Errors: - * -EBADR: This unit type does not support stopping. - * -EALREADY: Unit is already stopped. - * -EAGAIN: An operation is already in progress. Retry later. - */ -int unit_stop(Unit *u) { - UnitActiveState state; - Unit *following; - - assert(u); - - state = unit_active_state(u); - if (UNIT_IS_INACTIVE_OR_FAILED(state)) - return -EALREADY; - - if ((following = unit_following(u))) { - log_debug("Redirecting stop request from %s to %s.", u->id, following->id); - return unit_stop(following); - } - - if (!UNIT_VTABLE(u)->stop) - return -EBADR; - - unit_add_to_dbus_queue(u); - - unit_status_printf(u, NULL, "Stopping %s...", unit_description(u)); - return UNIT_VTABLE(u)->stop(u); -} - -/* Errors: - * -EBADR: This unit type does not support reloading. - * -ENOEXEC: Unit is not started. - * -EAGAIN: An operation is already in progress. Retry later. - */ -int unit_reload(Unit *u) { - UnitActiveState state; - Unit *following; - - assert(u); - - if (u->load_state != UNIT_LOADED) - return -EINVAL; - - if (!unit_can_reload(u)) - return -EBADR; - - state = unit_active_state(u); - if (state == UNIT_RELOADING) - return -EALREADY; - - if (state != UNIT_ACTIVE) - return -ENOEXEC; - - if ((following = unit_following(u))) { - log_debug("Redirecting reload request from %s to %s.", u->id, following->id); - return unit_reload(following); - } - - unit_add_to_dbus_queue(u); - return UNIT_VTABLE(u)->reload(u); -} - -bool unit_can_reload(Unit *u) { - assert(u); - - if (!UNIT_VTABLE(u)->reload) - return false; - - if (!UNIT_VTABLE(u)->can_reload) - return true; - - return UNIT_VTABLE(u)->can_reload(u); -} - -static void unit_check_unneeded(Unit *u) { - Iterator i; - Unit *other; - - assert(u); - - /* If this service shall be shut down when unneeded then do - * so. */ - - if (!u->stop_when_unneeded) - return; - - if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) - return; - - SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY], i) - if (unit_pending_active(other)) - return; - - SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i) - if (unit_pending_active(other)) - return; - - SET_FOREACH(other, u->dependencies[UNIT_WANTED_BY], i) - if (unit_pending_active(other)) - return; - - SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i) - if (unit_pending_active(other)) - return; - - log_info("Service %s is not needed anymore. Stopping.", u->id); - - /* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */ - manager_add_job(u->manager, JOB_STOP, u, JOB_FAIL, true, NULL, NULL); -} - -static void retroactively_start_dependencies(Unit *u) { - Iterator i; - Unit *other; - - assert(u); - assert(UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))); - - SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i) - if (!set_get(u->dependencies[UNIT_AFTER], other) && - !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) - manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); - - SET_FOREACH(other, u->dependencies[UNIT_BIND_TO], i) - if (!set_get(u->dependencies[UNIT_AFTER], other) && - !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) - manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); - - SET_FOREACH(other, u->dependencies[UNIT_REQUIRES_OVERRIDABLE], i) - if (!set_get(u->dependencies[UNIT_AFTER], other) && - !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) - manager_add_job(u->manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); - - SET_FOREACH(other, u->dependencies[UNIT_REQUISITE], i) - if (!set_get(u->dependencies[UNIT_AFTER], other) && - !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) - manager_add_job(u->manager, JOB_START, other, JOB_REPLACE, true, NULL, NULL); - - SET_FOREACH(other, u->dependencies[UNIT_WANTS], i) - if (!set_get(u->dependencies[UNIT_AFTER], other) && - !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other))) - manager_add_job(u->manager, JOB_START, other, JOB_FAIL, false, NULL, NULL); - - SET_FOREACH(other, u->dependencies[UNIT_CONFLICTS], i) - if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) - manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); - - SET_FOREACH(other, u->dependencies[UNIT_CONFLICTED_BY], i) - if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) - manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); -} - -static void retroactively_stop_dependencies(Unit *u) { - Iterator i; - Unit *other; - - assert(u); - assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); - - /* Pull down units which are bound to us recursively if enabled */ - SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i) - if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) - manager_add_job(u->manager, JOB_STOP, other, JOB_REPLACE, true, NULL, NULL); -} - -static void check_unneeded_dependencies(Unit *u) { - Iterator i; - Unit *other; - - assert(u); - assert(UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))); - - /* Garbage collect services that might not be needed anymore, if enabled */ - SET_FOREACH(other, u->dependencies[UNIT_REQUIRES], i) - if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) - unit_check_unneeded(other); - SET_FOREACH(other, u->dependencies[UNIT_REQUIRES_OVERRIDABLE], i) - if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) - unit_check_unneeded(other); - SET_FOREACH(other, u->dependencies[UNIT_WANTS], i) - if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) - unit_check_unneeded(other); - SET_FOREACH(other, u->dependencies[UNIT_REQUISITE], i) - if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) - unit_check_unneeded(other); - SET_FOREACH(other, u->dependencies[UNIT_REQUISITE_OVERRIDABLE], i) - if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) - unit_check_unneeded(other); - SET_FOREACH(other, u->dependencies[UNIT_BIND_TO], i) - if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other))) - unit_check_unneeded(other); -} - -void unit_trigger_on_failure(Unit *u) { - Unit *other; - Iterator i; - - assert(u); - - if (set_size(u->dependencies[UNIT_ON_FAILURE]) <= 0) - return; - - log_info("Triggering OnFailure= dependencies of %s.", u->id); - - SET_FOREACH(other, u->dependencies[UNIT_ON_FAILURE], i) { - int r; - - if ((r = manager_add_job(u->manager, JOB_START, other, u->on_failure_isolate ? JOB_ISOLATE : JOB_REPLACE, true, NULL, NULL)) < 0) - log_error("Failed to enqueue OnFailure= job: %s", strerror(-r)); - } -} - -void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns, bool reload_success) { - bool unexpected; - - assert(u); - assert(os < _UNIT_ACTIVE_STATE_MAX); - assert(ns < _UNIT_ACTIVE_STATE_MAX); - - /* Note that this is called for all low-level state changes, - * even if they might map to the same high-level - * UnitActiveState! That means that ns == os is OK an expected - * behaviour here. For example: if a mount point is remounted - * this function will be called too! */ - - if (u->manager->n_reloading <= 0) { - dual_timestamp ts; - - dual_timestamp_get(&ts); - - if (UNIT_IS_INACTIVE_OR_FAILED(os) && !UNIT_IS_INACTIVE_OR_FAILED(ns)) - u->inactive_exit_timestamp = ts; - else if (!UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_INACTIVE_OR_FAILED(ns)) - u->inactive_enter_timestamp = ts; - - if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns)) - u->active_enter_timestamp = ts; - else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns)) - u->active_exit_timestamp = ts; - - timer_unit_notify(u, ns); - path_unit_notify(u, ns); - } - - if (UNIT_IS_INACTIVE_OR_FAILED(ns)) - cgroup_bonding_trim_list(u->cgroup_bondings, true); - - if (u->job) { - unexpected = false; - - if (u->job->state == JOB_WAITING) - - /* So we reached a different state for this - * job. Let's see if we can run it now if it - * failed previously due to EAGAIN. */ - job_add_to_run_queue(u->job); - - /* Let's check whether this state change constitutes a - * finished job, or maybe contradicts a running job and - * hence needs to invalidate jobs. */ - - switch (u->job->type) { - - case JOB_START: - case JOB_VERIFY_ACTIVE: - - if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) - job_finish_and_invalidate(u->job, JOB_DONE); - else if (u->job->state == JOB_RUNNING && ns != UNIT_ACTIVATING) { - unexpected = true; - - if (UNIT_IS_INACTIVE_OR_FAILED(ns)) - job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE); - } - - break; - - case JOB_RELOAD: - case JOB_RELOAD_OR_START: - - if (u->job->state == JOB_RUNNING) { - if (ns == UNIT_ACTIVE) - job_finish_and_invalidate(u->job, reload_success ? JOB_DONE : JOB_FAILED); - else if (ns != UNIT_ACTIVATING && ns != UNIT_RELOADING) { - unexpected = true; - - if (UNIT_IS_INACTIVE_OR_FAILED(ns)) - job_finish_and_invalidate(u->job, ns == UNIT_FAILED ? JOB_FAILED : JOB_DONE); - } - } - - break; - - case JOB_STOP: - case JOB_RESTART: - case JOB_TRY_RESTART: - - if (UNIT_IS_INACTIVE_OR_FAILED(ns)) - job_finish_and_invalidate(u->job, JOB_DONE); - else if (u->job->state == JOB_RUNNING && ns != UNIT_DEACTIVATING) { - unexpected = true; - job_finish_and_invalidate(u->job, JOB_FAILED); - } - - break; - - default: - assert_not_reached("Job type unknown"); - } - - } else - unexpected = true; - - if (u->manager->n_reloading <= 0) { - - /* If this state change happened without being - * requested by a job, then let's retroactively start - * or stop dependencies. We skip that step when - * deserializing, since we don't want to create any - * additional jobs just because something is already - * activated. */ - - if (unexpected) { - if (UNIT_IS_INACTIVE_OR_FAILED(os) && UNIT_IS_ACTIVE_OR_ACTIVATING(ns)) - retroactively_start_dependencies(u); - else if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) - retroactively_stop_dependencies(u); - } - - /* stop unneeded units regardless if going down was expected or not */ - if (UNIT_IS_ACTIVE_OR_ACTIVATING(os) && UNIT_IS_INACTIVE_OR_DEACTIVATING(ns)) - check_unneeded_dependencies(u); - - if (ns != os && ns == UNIT_FAILED) { - log_notice("Unit %s entered failed state.", u->id); - unit_trigger_on_failure(u); - } - } - - /* Some names are special */ - if (UNIT_IS_ACTIVE_OR_RELOADING(ns)) { - - if (unit_has_name(u, SPECIAL_DBUS_SERVICE)) - /* The bus just might have become available, - * hence try to connect to it, if we aren't - * yet connected. */ - bus_init(u->manager, true); - - if (u->type == UNIT_SERVICE && - !UNIT_IS_ACTIVE_OR_RELOADING(os) && - u->manager->n_reloading <= 0) { - /* Write audit record if we have just finished starting up */ - manager_send_unit_audit(u->manager, u, AUDIT_SERVICE_START, true); - u->in_audit = true; - } - - if (!UNIT_IS_ACTIVE_OR_RELOADING(os)) - manager_send_unit_plymouth(u->manager, u); - - } else { - - /* We don't care about D-Bus here, since we'll get an - * asynchronous notification for it anyway. */ - - if (u->type == UNIT_SERVICE && - UNIT_IS_INACTIVE_OR_FAILED(ns) && - !UNIT_IS_INACTIVE_OR_FAILED(os) && - u->manager->n_reloading <= 0) { - - /* Hmm, if there was no start record written - * write it now, so that we always have a nice - * pair */ - if (!u->in_audit) { - manager_send_unit_audit(u->manager, u, AUDIT_SERVICE_START, ns == UNIT_INACTIVE); - - if (ns == UNIT_INACTIVE) - manager_send_unit_audit(u->manager, u, AUDIT_SERVICE_STOP, true); - } else - /* Write audit record if we have just finished shutting down */ - manager_send_unit_audit(u->manager, u, AUDIT_SERVICE_STOP, ns == UNIT_INACTIVE); - - u->in_audit = false; - } - } - - manager_recheck_journal(u->manager); - - /* Maybe we finished startup and are now ready for being - * stopped because unneeded? */ - unit_check_unneeded(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) { - struct epoll_event ev; - - assert(u); - assert(fd >= 0); - assert(w); - assert(w->type == WATCH_INVALID || (w->type == WATCH_FD && w->fd == fd && w->data.unit == u)); - - zero(ev); - ev.data.ptr = w; - ev.events = events; - - if (epoll_ctl(u->manager->epoll_fd, - w->type == WATCH_INVALID ? EPOLL_CTL_ADD : EPOLL_CTL_MOD, - fd, - &ev) < 0) - return -errno; - - w->fd = fd; - w->type = WATCH_FD; - w->data.unit = u; - - return 0; -} - -void unit_unwatch_fd(Unit *u, Watch *w) { - assert(u); - assert(w); - - if (w->type == WATCH_INVALID) - return; - - assert(w->type == WATCH_FD); - assert(w->data.unit == u); - assert_se(epoll_ctl(u->manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0); - - w->fd = -1; - w->type = WATCH_INVALID; - w->data.unit = NULL; -} - -int unit_watch_pid(Unit *u, pid_t pid) { - assert(u); - assert(pid >= 1); - - /* Watch a specific PID. We only support one unit watching - * each PID for now. */ - - return hashmap_put(u->manager->watch_pids, LONG_TO_PTR(pid), u); -} - -void unit_unwatch_pid(Unit *u, pid_t pid) { - assert(u); - assert(pid >= 1); - - hashmap_remove_value(u->manager->watch_pids, LONG_TO_PTR(pid), u); -} - -int unit_watch_timer(Unit *u, usec_t delay, Watch *w) { - struct itimerspec its; - int flags, fd; - bool ours; - - assert(u); - assert(w); - assert(w->type == WATCH_INVALID || (w->type == WATCH_UNIT_TIMER && w->data.unit == u)); - - /* This will try to reuse the old timer if there is one */ - - if (w->type == WATCH_UNIT_TIMER) { - assert(w->data.unit == u); - assert(w->fd >= 0); - - ours = false; - fd = w->fd; - } else if (w->type == WATCH_INVALID) { - - ours = true; - if ((fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC)) < 0) - return -errno; - } else - assert_not_reached("Invalid watch type"); - - zero(its); - - if (delay <= 0) { - /* Set absolute time in the past, but not 0, since we - * don't want to disarm the timer */ - its.it_value.tv_sec = 0; - its.it_value.tv_nsec = 1; - - flags = TFD_TIMER_ABSTIME; - } else { - timespec_store(&its.it_value, delay); - flags = 0; - } - - /* This will also flush the elapse counter */ - if (timerfd_settime(fd, flags, &its, NULL) < 0) - goto fail; - - if (w->type == WATCH_INVALID) { - struct epoll_event ev; - - zero(ev); - ev.data.ptr = w; - ev.events = EPOLLIN; - - if (epoll_ctl(u->manager->epoll_fd, EPOLL_CTL_ADD, fd, &ev) < 0) - goto fail; - } - - w->type = WATCH_UNIT_TIMER; - w->fd = fd; - w->data.unit = u; - - return 0; - -fail: - if (ours) - close_nointr_nofail(fd); - - return -errno; -} - -void unit_unwatch_timer(Unit *u, Watch *w) { - assert(u); - assert(w); - - if (w->type == WATCH_INVALID) - return; - - assert(w->type == WATCH_UNIT_TIMER); - assert(w->data.unit == u); - assert(w->fd >= 0); - - assert_se(epoll_ctl(u->manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0); - close_nointr_nofail(w->fd); - - w->fd = -1; - w->type = WATCH_INVALID; - w->data.unit = NULL; -} - -bool unit_job_is_applicable(Unit *u, JobType j) { - assert(u); - assert(j >= 0 && j < _JOB_TYPE_MAX); - - switch (j) { - - case JOB_VERIFY_ACTIVE: - case JOB_START: - case JOB_STOP: - return true; - - case JOB_RESTART: - case JOB_TRY_RESTART: - return unit_can_start(u); - - case JOB_RELOAD: - return unit_can_reload(u); - - case JOB_RELOAD_OR_START: - return unit_can_reload(u) && unit_can_start(u); - - default: - assert_not_reached("Invalid job type"); - } -} - -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_REQUIRES_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, - [UNIT_WANTS] = UNIT_WANTED_BY, - [UNIT_REQUISITE] = UNIT_REQUIRED_BY, - [UNIT_REQUISITE_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE, - [UNIT_BIND_TO] = UNIT_BOUND_BY, - [UNIT_REQUIRED_BY] = _UNIT_DEPENDENCY_INVALID, - [UNIT_REQUIRED_BY_OVERRIDABLE] = _UNIT_DEPENDENCY_INVALID, - [UNIT_WANTED_BY] = _UNIT_DEPENDENCY_INVALID, - [UNIT_BOUND_BY] = UNIT_BIND_TO, - [UNIT_CONFLICTS] = UNIT_CONFLICTED_BY, - [UNIT_CONFLICTED_BY] = UNIT_CONFLICTS, - [UNIT_BEFORE] = UNIT_AFTER, - [UNIT_AFTER] = UNIT_BEFORE, - [UNIT_ON_FAILURE] = _UNIT_DEPENDENCY_INVALID, - [UNIT_REFERENCES] = UNIT_REFERENCED_BY, - [UNIT_REFERENCED_BY] = UNIT_REFERENCES, - [UNIT_TRIGGERS] = UNIT_TRIGGERED_BY, - [UNIT_TRIGGERED_BY] = UNIT_TRIGGERS, - [UNIT_PROPAGATE_RELOAD_TO] = UNIT_PROPAGATE_RELOAD_FROM, - [UNIT_PROPAGATE_RELOAD_FROM] = UNIT_PROPAGATE_RELOAD_TO - }; - int r, q = 0, v = 0, w = 0; - - assert(u); - assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX); - assert(other); - - u = unit_follow_merge(u); - other = unit_follow_merge(other); - - /* We won't allow dependencies on ourselves. We will not - * consider them an error however. */ - if (u == other) - return 0; - - if ((r = set_ensure_allocated(&u->dependencies[d], trivial_hash_func, trivial_compare_func)) < 0) - return r; - - if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) - if ((r = set_ensure_allocated(&other->dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func)) < 0) - return r; - - if (add_reference) - if ((r = set_ensure_allocated(&u->dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func)) < 0 || - (r = set_ensure_allocated(&other->dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func)) < 0) - return r; - - if ((q = set_put(u->dependencies[d], other)) < 0) - return q; - - if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID) - if ((v = set_put(other->dependencies[inverse_table[d]], u)) < 0) { - r = v; - goto fail; - } - - if (add_reference) { - if ((w = set_put(u->dependencies[UNIT_REFERENCES], other)) < 0) { - r = w; - goto fail; - } - - if ((r = set_put(other->dependencies[UNIT_REFERENCED_BY], u)) < 0) - goto fail; - } - - unit_add_to_dbus_queue(u); - return 0; - -fail: - if (q > 0) - set_remove(u->dependencies[d], other); - - if (v > 0) - set_remove(other->dependencies[inverse_table[d]], u); - - if (w > 0) - set_remove(u->dependencies[UNIT_REFERENCES], other); - - return r; -} - -int unit_add_two_dependencies(Unit *u, UnitDependency d, UnitDependency e, Unit *other, bool add_reference) { - int r; - - assert(u); - - if ((r = unit_add_dependency(u, d, other, add_reference)) < 0) - return r; - - if ((r = unit_add_dependency(u, e, other, add_reference)) < 0) - return r; - - return 0; -} - -static const char *resolve_template(Unit *u, const char *name, const char*path, char **p) { - char *s; - - assert(u); - assert(name || path); - - if (!name) - name = file_name_from_path(path); - - if (!unit_name_is_template(name)) { - *p = NULL; - return name; - } - - if (u->instance) - s = unit_name_replace_instance(name, u->instance); - else { - char *i; - - if (!(i = unit_name_to_prefix(u->id))) - return NULL; - - s = unit_name_replace_instance(name, i); - free(i); - } - - if (!s) - return NULL; - - *p = s; - return s; -} - -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; - - assert(u); - assert(name || path); - - if (!(name = resolve_template(u, name, path, &s))) - return -ENOMEM; - - if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) - goto finish; - - r = unit_add_dependency(u, d, other, add_reference); - -finish: - free(s); - return r; -} - -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; - - assert(u); - assert(name || path); - - if (!(name = resolve_template(u, name, path, &s))) - return -ENOMEM; - - if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) - goto finish; - - 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; - - assert(u); - assert(name || path); - - if (!(name = resolve_template(u, name, path, &s))) - return -ENOMEM; - - if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) - goto finish; - - 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; - - assert(u); - assert(name || path); - - if (!(name = resolve_template(u, name, path, &s))) - return -ENOMEM; - - if ((r = manager_load_unit(u->manager, name, path, NULL, &other)) < 0) - goto finish; - - if ((r = unit_add_two_dependencies(other, d, e, u, add_reference)) < 0) - goto finish; - -finish: - free(s); - return r; -} - -int set_unit_path(const char *p) { - char *cwd, *c; - int r; - - /* This is mostly for debug purposes */ - - if (path_is_absolute(p)) { - if (!(c = strdup(p))) - return -ENOMEM; - } else { - if (!(cwd = get_current_dir_name())) - return -errno; - - r = asprintf(&c, "%s/%s", cwd, p); - free(cwd); - - if (r < 0) - return -ENOMEM; - } - - if (setenv("SYSTEMD_UNIT_PATH", c, 0) < 0) { - r = -errno; - free(c); - return r; - } - - return 0; -} - -char *unit_dbus_path(Unit *u) { - char *p, *e; - - assert(u); - - if (!u->id) - return NULL; - - if (!(e = bus_path_escape(u->id))) - return NULL; - - p = strappend("/org/freedesktop/systemd1/unit/", e); - free(e); - - return p; -} - -int unit_add_cgroup(Unit *u, CGroupBonding *b) { - int r; - - assert(u); - assert(b); - - assert(b->path); - - if (!b->controller) { - if (!(b->controller = strdup(SYSTEMD_CGROUP_CONTROLLER))) - return -ENOMEM; - - b->ours = true; - } - - /* Ensure this hasn't been added yet */ - assert(!b->unit); - - if (streq(b->controller, SYSTEMD_CGROUP_CONTROLLER)) { - CGroupBonding *l; - - l = hashmap_get(u->manager->cgroup_bondings, b->path); - LIST_PREPEND(CGroupBonding, by_path, l, b); - - if ((r = hashmap_replace(u->manager->cgroup_bondings, b->path, l)) < 0) { - LIST_REMOVE(CGroupBonding, by_path, l, b); - return r; - } - } - - LIST_PREPEND(CGroupBonding, by_unit, u->cgroup_bondings, b); - b->unit = u; - - return 0; -} - -static char *default_cgroup_path(Unit *u) { - char *p; - - assert(u); - - if (u->instance) { - char *t; - - t = unit_name_template(u->id); - if (!t) - return NULL; - - p = join(u->manager->cgroup_hierarchy, "/", t, "/", u->instance, NULL); - free(t); - } else - p = join(u->manager->cgroup_hierarchy, "/", u->id, NULL); - - return p; -} - -int unit_add_cgroup_from_text(Unit *u, const char *name) { - char *controller = NULL, *path = NULL; - CGroupBonding *b = NULL; - bool ours = false; - int r; - - assert(u); - assert(name); - - if ((r = cg_split_spec(name, &controller, &path)) < 0) - return r; - - if (!path) { - path = default_cgroup_path(u); - ours = true; - } - - if (!controller) { - controller = strdup(SYSTEMD_CGROUP_CONTROLLER); - ours = true; - } - - if (!path || !controller) { - free(path); - free(controller); - - return -ENOMEM; - } - - if (cgroup_bonding_find_list(u->cgroup_bondings, controller)) { - r = -EEXIST; - goto fail; - } - - if (!(b = new0(CGroupBonding, 1))) { - r = -ENOMEM; - goto fail; - } - - b->controller = controller; - b->path = path; - b->ours = ours; - b->essential = streq(controller, SYSTEMD_CGROUP_CONTROLLER); - - if ((r = unit_add_cgroup(u, b)) < 0) - goto fail; - - return 0; - -fail: - free(path); - free(controller); - free(b); - - return r; -} - -static int unit_add_one_default_cgroup(Unit *u, const char *controller) { - CGroupBonding *b = NULL; - int r = -ENOMEM; - - assert(u); - - if (!controller) - controller = SYSTEMD_CGROUP_CONTROLLER; - - if (cgroup_bonding_find_list(u->cgroup_bondings, controller)) - return 0; - - if (!(b = new0(CGroupBonding, 1))) - return -ENOMEM; - - if (!(b->controller = strdup(controller))) - goto fail; - - if (!(b->path = default_cgroup_path(u))) - goto fail; - - b->ours = true; - b->essential = streq(controller, SYSTEMD_CGROUP_CONTROLLER); - - if ((r = unit_add_cgroup(u, b)) < 0) - goto fail; - - return 0; - -fail: - free(b->path); - free(b->controller); - free(b); - - return r; -} - -int unit_add_default_cgroups(Unit *u) { - CGroupAttribute *a; - char **c; - int r; - - assert(u); - - /* Adds in the default cgroups, if they weren't specified - * otherwise. */ - - if (!u->manager->cgroup_hierarchy) - return 0; - - if ((r = unit_add_one_default_cgroup(u, NULL)) < 0) - return r; - - STRV_FOREACH(c, u->manager->default_controllers) - unit_add_one_default_cgroup(u, *c); - - LIST_FOREACH(by_unit, a, u->cgroup_attributes) - unit_add_one_default_cgroup(u, a->controller); - - return 0; -} - -CGroupBonding* unit_get_default_cgroup(Unit *u) { - assert(u); - - return cgroup_bonding_find_list(u->cgroup_bondings, SYSTEMD_CGROUP_CONTROLLER); -} - -int unit_add_cgroup_attribute(Unit *u, const char *controller, const char *name, const char *value, CGroupAttributeMapCallback map_callback) { - int r; - char *c = NULL; - CGroupAttribute *a; - - assert(u); - assert(name); - assert(value); - - if (!controller) { - const char *dot; - - dot = strchr(name, '.'); - if (!dot) - return -EINVAL; - - c = strndup(name, dot - name); - if (!c) - return -ENOMEM; - - controller = c; - } - - if (streq(controller, SYSTEMD_CGROUP_CONTROLLER)) { - r = -EINVAL; - goto finish; - } - - a = new0(CGroupAttribute, 1); - if (!a) { - r = -ENOMEM; - goto finish; - } - - if (c) { - a->controller = c; - c = NULL; - } else - a->controller = strdup(controller); - - a->name = strdup(name); - a->value = strdup(value); - - if (!a->controller || !a->name || !a->value) { - free(a->controller); - free(a->name); - free(a->value); - free(a); - - return -ENOMEM; - } - - a->map_callback = map_callback; - - LIST_PREPEND(CGroupAttribute, by_unit, u->cgroup_attributes, a); - - r = 0; - -finish: - free(c); - return r; -} - -int unit_load_related_unit(Unit *u, const char *type, Unit **_found) { - char *t; - int r; - - assert(u); - assert(type); - assert(_found); - - if (!(t = unit_name_change_suffix(u->id, type))) - return -ENOMEM; - - assert(!unit_has_name(u, t)); - - r = manager_load_unit(u->manager, t, NULL, NULL, _found); - free(t); - - assert(r < 0 || *_found != u); - - 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->id, type))) - return -ENOMEM; - - assert(!unit_has_name(u, t)); - - found = manager_get_unit(u->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 unit_name_to_prefix_and_instance(u->id); -} - -static char *specifier_prefix(char specifier, void *data, void *userdata) { - Unit *u = userdata; - assert(u); - - return unit_name_to_prefix(u->id); -} - -static char *specifier_prefix_unescaped(char specifier, void *data, void *userdata) { - Unit *u = userdata; - char *p, *r; - - assert(u); - - if (!(p = unit_name_to_prefix(u->id))) - return NULL; - - r = unit_name_unescape(p); - free(p); - - return r; -} - -static char *specifier_instance_unescaped(char specifier, void *data, void *userdata) { - Unit *u = userdata; - assert(u); - - if (u->instance) - return unit_name_unescape(u->instance); - - return strdup(""); -} - -static char *specifier_filename(char specifier, void *data, void *userdata) { - Unit *u = userdata; - assert(u); - - if (u->instance) - return unit_name_path_unescape(u->instance); - - return unit_name_to_path(u->instance); -} - -static char *specifier_cgroup(char specifier, void *data, void *userdata) { - Unit *u = userdata; - assert(u); - - return default_cgroup_path(u); -} - -static char *specifier_cgroup_root(char specifier, void *data, void *userdata) { - Unit *u = userdata; - char *p; - assert(u); - - if (specifier == 'r') - return strdup(u->manager->cgroup_hierarchy); - - if (parent_of_path(u->manager->cgroup_hierarchy, &p) < 0) - return strdup(""); - - if (streq(p, "/")) { - free(p); - return strdup(""); - } - - return p; -} - -static char *specifier_runtime(char specifier, void *data, void *userdata) { - Unit *u = userdata; - assert(u); - - if (u->manager->running_as == MANAGER_USER) { - const char *e; - - e = getenv("XDG_RUNTIME_DIR"); - if (e) - return strdup(e); - } - - return strdup("/run"); -} - -char *unit_name_printf(Unit *u, const char* format) { - - /* - * This will use the passed string as format string and - * replace the following specifiers: - * - * %n: the full id of the unit (foo@bar.waldo) - * %N: the id of the unit without the suffix (foo@bar) - * %p: the prefix (foo) - * %i: the instance (bar) - */ - - const Specifier table[] = { - { 'n', specifier_string, u->id }, - { 'N', specifier_prefix_and_instance, NULL }, - { 'p', specifier_prefix, NULL }, - { 'i', specifier_string, u->instance }, - { 0, NULL, NULL } - }; - - assert(u); - assert(format); - - return specifier_printf(format, table, u); -} - -char *unit_full_printf(Unit *u, const char *format) { - - /* This is similar to unit_name_printf() but also supports - * unescaping. Also, adds a couple of additional codes: - * - * %c cgroup path of unit - * %r root cgroup path of this systemd instance (e.g. "/user/lennart/shared/systemd-4711") - * %R parent of root cgroup path (e.g. "/usr/lennart/shared") - * %t the runtime directory to place sockets in (e.g. "/run" or $XDG_RUNTIME_DIR) - */ - - const Specifier table[] = { - { 'n', specifier_string, u->id }, - { 'N', specifier_prefix_and_instance, NULL }, - { 'p', specifier_prefix, NULL }, - { 'P', specifier_prefix_unescaped, NULL }, - { 'i', specifier_string, u->instance }, - { 'I', specifier_instance_unescaped, NULL }, - { 'f', specifier_filename, NULL }, - { 'c', specifier_cgroup, NULL }, - { 'r', specifier_cgroup_root, NULL }, - { 'R', specifier_cgroup_root, NULL }, - { 't', specifier_runtime, NULL }, - { 0, NULL, NULL } - }; - - assert(u); - assert(format); - - return specifier_printf(format, table, u); -} - -char **unit_full_printf_strv(Unit *u, char **l) { - size_t n; - char **r, **i, **j; - - /* Applies unit_full_printf to every entry in l */ - - assert(u); - - n = strv_length(l); - if (!(r = new(char*, n+1))) - return NULL; - - for (i = l, j = r; *i; i++, j++) - if (!(*j = unit_full_printf(u, *i))) - goto fail; - - *j = NULL; - return r; - -fail: - for (j--; j >= r; j--) - free(*j); - - free(r); - - 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->manager->watch_bus, name, u); -} - -void unit_unwatch_bus_name(Unit *u, const char *name) { - assert(u); - assert(name); - - hashmap_remove_value(u->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; - - if (u->job) - unit_serialize_item(u, f, "job", job_type_to_string(u->job->type)); - - dual_timestamp_serialize(f, "inactive-exit-timestamp", &u->inactive_exit_timestamp); - dual_timestamp_serialize(f, "active-enter-timestamp", &u->active_enter_timestamp); - dual_timestamp_serialize(f, "active-exit-timestamp", &u->active_exit_timestamp); - dual_timestamp_serialize(f, "inactive-enter-timestamp", &u->inactive_enter_timestamp); - dual_timestamp_serialize(f, "condition-timestamp", &u->condition_timestamp); - - if (dual_timestamp_is_set(&u->condition_timestamp)) - unit_serialize_item(u, f, "condition-result", yes_no(u->condition_result)); - - /* 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[LINE_MAX], *l, *v; - size_t k; - - if (!fgets(line, sizeof(line), f)) { - if (feof(f)) - return 0; - return -errno; - } - - char_array_0(line); - 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 (streq(l, "job")) { - JobType type; - - if ((type = job_type_from_string(v)) < 0) - log_debug("Failed to parse job type value %s", v); - else - u->deserialized_job = type; - - continue; - } else if (streq(l, "inactive-exit-timestamp")) { - dual_timestamp_deserialize(v, &u->inactive_exit_timestamp); - continue; - } else if (streq(l, "active-enter-timestamp")) { - dual_timestamp_deserialize(v, &u->active_enter_timestamp); - continue; - } else if (streq(l, "active-exit-timestamp")) { - dual_timestamp_deserialize(v, &u->active_exit_timestamp); - continue; - } else if (streq(l, "inactive-enter-timestamp")) { - dual_timestamp_deserialize(v, &u->inactive_enter_timestamp); - continue; - } else if (streq(l, "condition-timestamp")) { - dual_timestamp_deserialize(v, &u->condition_timestamp); - continue; - } else if (streq(l, "condition-result")) { - int b; - - if ((b = parse_boolean(v)) < 0) - log_debug("Failed to parse condition result value %s", v); - else - u->condition_result = b; - - continue; - } - - if ((r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds)) < 0) - return r; - } -} - -int unit_add_node_link(Unit *u, const char *what, bool wants) { - Unit *device; - char *e; - int r; - - assert(u); - - if (!what) - return 0; - - /* Adds in links to the device node that this unit is based on */ - - if (!is_device_path(what)) - return 0; - - if (!(e = unit_name_build_escape(what+1, NULL, ".device"))) - return -ENOMEM; - - r = manager_load_unit(u->manager, e, NULL, NULL, &device); - free(e); - - if (r < 0) - return r; - - if ((r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_BIND_TO, device, true)) < 0) - return r; - - if (wants) - if ((r = unit_add_dependency(device, UNIT_WANTS, u, false)) < 0) - return r; - - return 0; -} - -int unit_coldplug(Unit *u) { - int r; - - assert(u); - - if (UNIT_VTABLE(u)->coldplug) - if ((r = UNIT_VTABLE(u)->coldplug(u)) < 0) - return r; - - if (u->deserialized_job >= 0) { - if ((r = manager_add_job(u->manager, u->deserialized_job, u, JOB_IGNORE_REQUIREMENTS, false, NULL, NULL)) < 0) - return r; - - u->deserialized_job = _JOB_TYPE_INVALID; - } - - return 0; -} - -void unit_status_printf(Unit *u, const char *status, const char *format, ...) { - va_list ap; - - assert(u); - assert(format); - - if (!UNIT_VTABLE(u)->show_status) - return; - - if (!manager_get_show_status(u->manager)) - return; - - if (!manager_is_booting_or_shutting_down(u->manager)) - return; - - va_start(ap, format); - status_vprintf(status, true, format, ap); - va_end(ap); -} - -bool unit_need_daemon_reload(Unit *u) { - assert(u); - - if (u->fragment_path) { - struct stat st; - - zero(st); - if (stat(u->fragment_path, &st) < 0) - /* What, cannot access this anymore? */ - return true; - - if (u->fragment_mtime > 0 && - timespec_load(&st.st_mtim) != u->fragment_mtime) - return true; - } - - if (UNIT_VTABLE(u)->need_daemon_reload) - return UNIT_VTABLE(u)->need_daemon_reload(u); - - return false; -} - -void unit_reset_failed(Unit *u) { - assert(u); - - if (UNIT_VTABLE(u)->reset_failed) - UNIT_VTABLE(u)->reset_failed(u); -} - -Unit *unit_following(Unit *u) { - assert(u); - - if (UNIT_VTABLE(u)->following) - return UNIT_VTABLE(u)->following(u); - - return NULL; -} - -bool unit_pending_inactive(Unit *u) { - assert(u); - - /* Returns true if the unit is inactive or going down */ - - if (UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(u))) - return true; - - if (u->job && u->job->type == JOB_STOP) - return true; - - return false; -} - -bool unit_pending_active(Unit *u) { - assert(u); - - /* Returns true if the unit is active or going up */ - - if (UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) - return true; - - if (u->job && - (u->job->type == JOB_START || - u->job->type == JOB_RELOAD_OR_START || - u->job->type == JOB_RESTART)) - return true; - - return false; -} - -UnitType unit_name_to_type(const char *n) { - UnitType t; - - assert(n); - - for (t = 0; t < _UNIT_TYPE_MAX; t++) - if (endswith(n, unit_vtable[t]->suffix)) - return t; - - return _UNIT_TYPE_INVALID; -} - -bool unit_name_is_valid(const char *n, bool template_ok) { - UnitType t; - - t = unit_name_to_type(n); - if (t < 0 || t >= _UNIT_TYPE_MAX) - return false; - - return unit_name_is_valid_no_type(n, template_ok); -} - -int unit_kill(Unit *u, KillWho w, KillMode m, int signo, DBusError *error) { - assert(u); - assert(w >= 0 && w < _KILL_WHO_MAX); - assert(m >= 0 && m < _KILL_MODE_MAX); - assert(signo > 0); - assert(signo < _NSIG); - - if (m == KILL_NONE) - return 0; - - if (!UNIT_VTABLE(u)->kill) - return -ENOTSUP; - - return UNIT_VTABLE(u)->kill(u, w, m, signo, error); -} - -int unit_following_set(Unit *u, Set **s) { - assert(u); - assert(s); - - if (UNIT_VTABLE(u)->following_set) - return UNIT_VTABLE(u)->following_set(u, s); - - *s = NULL; - return 0; -} - -UnitFileState unit_get_unit_file_state(Unit *u) { - assert(u); - - if (u->unit_file_state < 0 && u->fragment_path) - u->unit_file_state = unit_file_get_state( - u->manager->running_as == MANAGER_SYSTEM ? UNIT_FILE_SYSTEM : UNIT_FILE_USER, - NULL, file_name_from_path(u->fragment_path)); - - return u->unit_file_state; -} - -Unit* unit_ref_set(UnitRef *ref, Unit *u) { - assert(ref); - assert(u); - - if (ref->unit) - unit_ref_unset(ref); - - ref->unit = u; - LIST_PREPEND(UnitRef, refs, u->refs, ref); - return u; -} - -void unit_ref_unset(UnitRef *ref) { - assert(ref); - - if (!ref->unit) - return; - - LIST_REMOVE(UnitRef, refs, ref->unit->refs, ref); - ref->unit = NULL; -} - -static const char* const unit_load_state_table[_UNIT_LOAD_STATE_MAX] = { - [UNIT_STUB] = "stub", - [UNIT_LOADED] = "loaded", - [UNIT_ERROR] = "error", - [UNIT_MERGED] = "merged", - [UNIT_MASKED] = "masked" -}; - -DEFINE_STRING_TABLE_LOOKUP(unit_load_state, UnitLoadState); - -static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = { - [UNIT_ACTIVE] = "active", - [UNIT_RELOADING] = "reloading", - [UNIT_INACTIVE] = "inactive", - [UNIT_FAILED] = "failed", - [UNIT_ACTIVATING] = "activating", - [UNIT_DEACTIVATING] = "deactivating" -}; - -DEFINE_STRING_TABLE_LOOKUP(unit_active_state, UnitActiveState); - -static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = { - [UNIT_REQUIRES] = "Requires", - [UNIT_REQUIRES_OVERRIDABLE] = "RequiresOverridable", - [UNIT_WANTS] = "Wants", - [UNIT_REQUISITE] = "Requisite", - [UNIT_REQUISITE_OVERRIDABLE] = "RequisiteOverridable", - [UNIT_REQUIRED_BY] = "RequiredBy", - [UNIT_REQUIRED_BY_OVERRIDABLE] = "RequiredByOverridable", - [UNIT_BIND_TO] = "BindTo", - [UNIT_WANTED_BY] = "WantedBy", - [UNIT_CONFLICTS] = "Conflicts", - [UNIT_CONFLICTED_BY] = "ConflictedBy", - [UNIT_BOUND_BY] = "BoundBy", - [UNIT_BEFORE] = "Before", - [UNIT_AFTER] = "After", - [UNIT_REFERENCES] = "References", - [UNIT_REFERENCED_BY] = "ReferencedBy", - [UNIT_ON_FAILURE] = "OnFailure", - [UNIT_TRIGGERS] = "Triggers", - [UNIT_TRIGGERED_BY] = "TriggeredBy", - [UNIT_PROPAGATE_RELOAD_TO] = "PropagateReloadTo", - [UNIT_PROPAGATE_RELOAD_FROM] = "PropagateReloadFrom" -}; - -DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency); |