+++ /dev/null
-/*-*- 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 Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <errno.h>
-
-#include "sd-id128.h"
-#include "sd-messages.h"
-#include "set.h"
-#include "unit.h"
-#include "macro.h"
-#include "strv.h"
-#include "log.h"
-#include "dbus-job.h"
-#include "special.h"
-#include "async.h"
-#include "virt.h"
-#include "dbus.h"
-
-Job* job_new_raw(Unit *unit) {
- Job *j;
-
- /* used for deserialization */
-
- assert(unit);
-
- j = new0(Job, 1);
- if (!j)
- return NULL;
-
- j->manager = unit->manager;
- j->unit = unit;
- j->type = _JOB_TYPE_INVALID;
-
- return j;
-}
-
-Job* job_new(Unit *unit, JobType type) {
- Job *j;
-
- assert(type < _JOB_TYPE_MAX);
-
- j = job_new_raw(unit);
- if (!j)
- return NULL;
-
- j->id = j->manager->current_job_id++;
- j->type = type;
-
- /* We don't link it here, that's what job_dependency() is for */
-
- return j;
-}
-
-void job_free(Job *j) {
- assert(j);
- assert(!j->installed);
- assert(!j->transaction_prev);
- assert(!j->transaction_next);
- assert(!j->subject_list);
- assert(!j->object_list);
-
- if (j->in_run_queue)
- LIST_REMOVE(run_queue, j->manager->run_queue, j);
-
- if (j->in_dbus_queue)
- LIST_REMOVE(dbus_queue, j->manager->dbus_job_queue, j);
-
- sd_event_source_unref(j->timer_event_source);
-
- sd_bus_track_unref(j->clients);
- strv_free(j->deserialized_clients);
-
- free(j);
-}
-
-static void job_set_state(Job *j, JobState state) {
- assert(j);
- assert(state >= 0);
- assert(state < _JOB_STATE_MAX);
-
- if (j->state == state)
- return;
-
- j->state = state;
-
- if (!j->installed)
- return;
-
- if (j->state == JOB_RUNNING)
- j->unit->manager->n_running_jobs++;
- else {
- assert(j->state == JOB_WAITING);
- assert(j->unit->manager->n_running_jobs > 0);
-
- j->unit->manager->n_running_jobs--;
-
- if (j->unit->manager->n_running_jobs <= 0)
- j->unit->manager->jobs_in_progress_event_source = sd_event_source_unref(j->unit->manager->jobs_in_progress_event_source);
- }
-}
-
-void job_uninstall(Job *j) {
- Job **pj;
-
- assert(j->installed);
-
- job_set_state(j, JOB_WAITING);
-
- pj = (j->type == JOB_NOP) ? &j->unit->nop_job : &j->unit->job;
- assert(*pj == j);
-
- /* Detach from next 'bigger' objects */
-
- /* daemon-reload should be transparent to job observers */
- if (j->manager->n_reloading <= 0)
- bus_job_send_removed_signal(j);
-
- *pj = NULL;
-
- unit_add_to_gc_queue(j->unit);
-
- hashmap_remove(j->manager->jobs, UINT32_TO_PTR(j->id));
- j->installed = false;
-}
-
-static bool job_type_allows_late_merge(JobType t) {
- /* Tells whether it is OK to merge a job of type 't' with an already
- * running job.
- * Reloads cannot be merged this way. Think of the sequence:
- * 1. Reload of a daemon is in progress; the daemon has already loaded
- * its config file, but hasn't completed the reload operation yet.
- * 2. Edit foo's config file.
- * 3. Trigger another reload to have the daemon use the new config.
- * Should the second reload job be merged into the first one, the daemon
- * would not know about the new config.
- * JOB_RESTART jobs on the other hand can be merged, because they get
- * patched into JOB_START after stopping the unit. So if we see a
- * JOB_RESTART running, it means the unit hasn't stopped yet and at
- * this time the merge is still allowed. */
- return t != JOB_RELOAD;
-}
-
-static void job_merge_into_installed(Job *j, Job *other) {
- assert(j->installed);
- assert(j->unit == other->unit);
-
- if (j->type != JOB_NOP)
- job_type_merge_and_collapse(&j->type, other->type, j->unit);
- else
- assert(other->type == JOB_NOP);
-
- j->override = j->override || other->override;
- j->irreversible = j->irreversible || other->irreversible;
- j->ignore_order = j->ignore_order || other->ignore_order;
-}
-
-Job* job_install(Job *j) {
- Job **pj;
- Job *uj;
-
- assert(!j->installed);
- assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION);
- assert(j->state == JOB_WAITING);
-
- pj = (j->type == JOB_NOP) ? &j->unit->nop_job : &j->unit->job;
- uj = *pj;
-
- if (uj) {
- if (job_type_is_conflicting(uj->type, j->type))
- job_finish_and_invalidate(uj, JOB_CANCELED, false);
- else {
- /* not conflicting, i.e. mergeable */
-
- if (uj->state == JOB_WAITING ||
- (job_type_allows_late_merge(j->type) && job_type_is_superset(uj->type, j->type))) {
- job_merge_into_installed(uj, j);
- log_unit_debug(uj->unit->id,
- "Merged into installed job %s/%s as %u",
- uj->unit->id, job_type_to_string(uj->type), (unsigned) uj->id);
- return uj;
- } else {
- /* already running and not safe to merge into */
- /* Patch uj to become a merged job and re-run it. */
- /* XXX It should be safer to queue j to run after uj finishes, but it is
- * not currently possible to have more than one installed job per unit. */
- job_merge_into_installed(uj, j);
- log_unit_debug(uj->unit->id,
- "Merged into running job, re-running: %s/%s as %u",
- uj->unit->id, job_type_to_string(uj->type), (unsigned) uj->id);
-
- job_set_state(uj, JOB_WAITING);
- return uj;
- }
- }
- }
-
- /* Install the job */
- *pj = j;
- j->installed = true;
-
- j->manager->n_installed_jobs ++;
- log_unit_debug(j->unit->id,
- "Installed new job %s/%s as %u",
- j->unit->id, job_type_to_string(j->type), (unsigned) j->id);
- return j;
-}
-
-int job_install_deserialized(Job *j) {
- Job **pj;
-
- assert(!j->installed);
-
- if (j->type < 0 || j->type >= _JOB_TYPE_MAX_IN_TRANSACTION) {
- log_debug("Invalid job type %s in deserialization.", strna(job_type_to_string(j->type)));
- return -EINVAL;
- }
-
- pj = (j->type == JOB_NOP) ? &j->unit->nop_job : &j->unit->job;
- if (*pj) {
- log_unit_debug(j->unit->id, "Unit %s already has a job installed. Not installing deserialized job.", j->unit->id);
- return -EEXIST;
- }
-
- *pj = j;
- j->installed = true;
-
- if (j->state == JOB_RUNNING)
- j->unit->manager->n_running_jobs++;
-
- log_unit_debug(j->unit->id,
- "Reinstalled deserialized job %s/%s as %u",
- j->unit->id, job_type_to_string(j->type), (unsigned) j->id);
- return 0;
-}
-
-JobDependency* job_dependency_new(Job *subject, Job *object, bool matters, bool conflicts) {
- JobDependency *l;
-
- assert(object);
-
- /* Adds a new job link, which encodes that the 'subject' job
- * needs the 'object' job in some way. If 'subject' is NULL
- * this means the 'anchor' job (i.e. the one the user
- * explicitly asked for) is the requester. */
-
- if (!(l = new0(JobDependency, 1)))
- return NULL;
-
- l->subject = subject;
- l->object = object;
- l->matters = matters;
- l->conflicts = conflicts;
-
- if (subject)
- LIST_PREPEND(subject, subject->subject_list, l);
-
- LIST_PREPEND(object, object->object_list, l);
-
- return l;
-}
-
-void job_dependency_free(JobDependency *l) {
- assert(l);
-
- if (l->subject)
- LIST_REMOVE(subject, l->subject->subject_list, l);
-
- LIST_REMOVE(object, l->object->object_list, l);
-
- free(l);
-}
-
-void job_dump(Job *j, FILE*f, const char *prefix) {
- assert(j);
- assert(f);
-
- if (!prefix)
- prefix = "";
-
- fprintf(f,
- "%s-> Job %u:\n"
- "%s\tAction: %s -> %s\n"
- "%s\tState: %s\n"
- "%s\tForced: %s\n"
- "%s\tIrreversible: %s\n",
- prefix, j->id,
- prefix, j->unit->id, job_type_to_string(j->type),
- prefix, job_state_to_string(j->state),
- prefix, yes_no(j->override),
- prefix, yes_no(j->irreversible));
-}
-
-/*
- * Merging is commutative, so imagine the matrix as symmetric. We store only
- * its lower triangle to avoid duplication. We don't store the main diagonal,
- * because A merged with A is simply A.
- *
- * If the resulting type is collapsed immediately afterwards (to get rid of
- * the JOB_RELOAD_OR_START, which lies outside the lookup function's domain),
- * the following properties hold:
- *
- * Merging is associative! A merged with B, and then merged with C is the same
- * as A merged with the result of B merged with C.
- *
- * Mergeability is transitive! If A can be merged with B and B with C then
- * A also with C.
- *
- * Also, if A merged with B cannot be merged with C, then either A or B cannot
- * be merged with C either.
- */
-static const JobType job_merging_table[] = {
-/* What \ With * JOB_START JOB_VERIFY_ACTIVE JOB_STOP JOB_RELOAD */
-/*********************************************************************************/
-/*JOB_START */
-/*JOB_VERIFY_ACTIVE */ JOB_START,
-/*JOB_STOP */ -1, -1,
-/*JOB_RELOAD */ JOB_RELOAD_OR_START, JOB_RELOAD, -1,
-/*JOB_RESTART */ JOB_RESTART, JOB_RESTART, -1, JOB_RESTART,
-};
-
-JobType job_type_lookup_merge(JobType a, JobType b) {
- assert_cc(ELEMENTSOF(job_merging_table) == _JOB_TYPE_MAX_MERGING * (_JOB_TYPE_MAX_MERGING - 1) / 2);
- assert(a >= 0 && a < _JOB_TYPE_MAX_MERGING);
- assert(b >= 0 && b < _JOB_TYPE_MAX_MERGING);
-
- if (a == b)
- return a;
-
- if (a < b) {
- JobType tmp = a;
- a = b;
- b = tmp;
- }
-
- return job_merging_table[(a - 1) * a / 2 + b];
-}
-
-bool job_type_is_redundant(JobType a, UnitActiveState b) {
- switch (a) {
-
- case JOB_START:
- return
- b == UNIT_ACTIVE ||
- b == UNIT_RELOADING;
-
- case JOB_STOP:
- return
- b == UNIT_INACTIVE ||
- b == UNIT_FAILED;
-
- case JOB_VERIFY_ACTIVE:
- return
- b == UNIT_ACTIVE ||
- b == UNIT_RELOADING;
-
- case JOB_RELOAD:
- return
- b == UNIT_RELOADING;
-
- case JOB_RESTART:
- return
- b == UNIT_ACTIVATING;
-
- case JOB_NOP:
- return true;
-
- default:
- assert_not_reached("Invalid job type");
- }
-}
-
-void job_type_collapse(JobType *t, Unit *u) {
- UnitActiveState s;
-
- switch (*t) {
-
- case JOB_TRY_RESTART:
- s = unit_active_state(u);
- if (UNIT_IS_INACTIVE_OR_DEACTIVATING(s))
- *t = JOB_NOP;
- else
- *t = JOB_RESTART;
- break;
-
- case JOB_RELOAD_OR_START:
- s = unit_active_state(u);
- if (UNIT_IS_INACTIVE_OR_DEACTIVATING(s))
- *t = JOB_START;
- else
- *t = JOB_RELOAD;
- break;
-
- default:
- ;
- }
-}
-
-int job_type_merge_and_collapse(JobType *a, JobType b, Unit *u) {
- JobType t = job_type_lookup_merge(*a, b);
- if (t < 0)
- return -EEXIST;
- *a = t;
- job_type_collapse(a, u);
- return 0;
-}
-
-static bool job_is_runnable(Job *j) {
- Iterator i;
- Unit *other;
-
- assert(j);
- assert(j->installed);
-
- /* Checks whether there is any job running for the units this
- * job needs to be running after (in the case of a 'positive'
- * job type) or before (in the case of a 'negative' job
- * type. */
-
- /* Note that unit types have a say in what is runnable,
- * too. For example, if they return -EAGAIN from
- * unit_start() they can indicate they are not
- * runnable yet. */
-
- /* First check if there is an override */
- if (j->ignore_order)
- return true;
-
- if (j->type == JOB_NOP)
- return true;
-
- if (j->type == JOB_START ||
- j->type == JOB_VERIFY_ACTIVE ||
- j->type == JOB_RELOAD) {
-
- /* Immediate result is that the job is or might be
- * started. In this case lets wait for the
- * dependencies, regardless whether they are
- * starting or stopping something. */
-
- SET_FOREACH(other, j->unit->dependencies[UNIT_AFTER], i)
- if (other->job)
- return false;
- }
-
- /* Also, if something else is being stopped and we should
- * change state after it, then lets wait. */
-
- SET_FOREACH(other, j->unit->dependencies[UNIT_BEFORE], i)
- if (other->job &&
- (other->job->type == JOB_STOP ||
- other->job->type == JOB_RESTART))
- return false;
-
- /* This means that for a service a and a service b where b
- * shall be started after a:
- *
- * start a + start b → 1st step start a, 2nd step start b
- * start a + stop b → 1st step stop b, 2nd step start a
- * stop a + start b → 1st step stop a, 2nd step start b
- * stop a + stop b → 1st step stop b, 2nd step stop a
- *
- * This has the side effect that restarts are properly
- * synchronized too. */
-
- return true;
-}
-
-static void job_change_type(Job *j, JobType newtype) {
- log_unit_debug(j->unit->id,
- "Converting job %s/%s -> %s/%s",
- j->unit->id, job_type_to_string(j->type),
- j->unit->id, job_type_to_string(newtype));
-
- j->type = newtype;
-}
-
-int job_run_and_invalidate(Job *j) {
- int r;
- uint32_t id;
- Manager *m = j->manager;
-
- assert(j);
- assert(j->installed);
- assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION);
- assert(j->in_run_queue);
-
- LIST_REMOVE(run_queue, j->manager->run_queue, j);
- j->in_run_queue = false;
-
- if (j->state != JOB_WAITING)
- return 0;
-
- if (!job_is_runnable(j))
- return -EAGAIN;
-
- job_set_state(j, JOB_RUNNING);
- job_add_to_dbus_queue(j);
-
- /* While we execute this operation the job might go away (for
- * example: because it is replaced by a new, conflicting
- * job.) To make sure we don't access a freed job later on we
- * store the id here, so that we can verify the job is still
- * valid. */
- id = j->id;
-
- switch (j->type) {
-
- case JOB_START:
- r = unit_start(j->unit);
-
- /* If this unit cannot be started, then simply wait */
- if (r == -EBADR)
- r = 0;
- break;
-
- case JOB_VERIFY_ACTIVE: {
- UnitActiveState t = unit_active_state(j->unit);
- if (UNIT_IS_ACTIVE_OR_RELOADING(t))
- r = -EALREADY;
- else if (t == UNIT_ACTIVATING)
- r = -EAGAIN;
- else
- r = -EBADR;
- break;
- }
-
- case JOB_STOP:
- case JOB_RESTART:
- r = unit_stop(j->unit);
-
- /* If this unit cannot stopped, then simply wait. */
- if (r == -EBADR)
- r = 0;
- break;
-
- case JOB_RELOAD:
- r = unit_reload(j->unit);
- break;
-
- case JOB_NOP:
- r = -EALREADY;
- break;
-
- default:
- assert_not_reached("Unknown job type");
- }
-
- j = manager_get_job(m, id);
- if (j) {
- if (r == -EALREADY)
- r = job_finish_and_invalidate(j, JOB_DONE, true);
- else if (r == -EBADR)
- r = job_finish_and_invalidate(j, JOB_SKIPPED, true);
- else if (r == -ENOEXEC)
- r = job_finish_and_invalidate(j, JOB_INVALID, true);
- else if (r == -EPROTO)
- r = job_finish_and_invalidate(j, JOB_ASSERT, true);
- else if (r == -EOPNOTSUPP)
- r = job_finish_and_invalidate(j, JOB_UNSUPPORTED, true);
- else if (r == -EAGAIN)
- job_set_state(j, JOB_WAITING);
- else if (r < 0)
- r = job_finish_and_invalidate(j, JOB_FAILED, true);
- }
-
- return r;
-}
-
-_pure_ static const char *job_get_status_message_format(Unit *u, JobType t, JobResult result) {
- const UnitStatusMessageFormats *format_table;
-
- assert(u);
- assert(t >= 0);
- assert(t < _JOB_TYPE_MAX);
-
- format_table = &UNIT_VTABLE(u)->status_message_formats;
- if (!format_table)
- return NULL;
-
- if (t == JOB_START)
- return format_table->finished_start_job[result];
- else if (t == JOB_STOP || t == JOB_RESTART)
- return format_table->finished_stop_job[result];
-
- return NULL;
-}
-
-_pure_ static const char *job_get_status_message_format_try_harder(Unit *u, JobType t, JobResult result) {
- const char *format;
-
- assert(u);
- assert(t >= 0);
- assert(t < _JOB_TYPE_MAX);
-
- format = job_get_status_message_format(u, t, result);
- if (format)
- return format;
-
- /* Return generic strings */
- if (t == JOB_START) {
- if (result == JOB_DONE)
- return "Started %s.";
- else if (result == JOB_TIMEOUT)
- return "Timed out starting %s.";
- else if (result == JOB_FAILED)
- return "Failed to start %s.";
- else if (result == JOB_DEPENDENCY)
- return "Dependency failed for %s.";
- else if (result == JOB_ASSERT)
- return "Assertion failed for %s.";
- else if (result == JOB_UNSUPPORTED)
- return "Starting of %s not supported.";
- } else if (t == JOB_STOP || t == JOB_RESTART) {
- if (result == JOB_DONE)
- return "Stopped %s.";
- else if (result == JOB_FAILED)
- return "Stopped (with error) %s.";
- else if (result == JOB_TIMEOUT)
- return "Timed out stoppping %s.";
- } else if (t == JOB_RELOAD) {
- if (result == JOB_DONE)
- return "Reloaded %s.";
- else if (result == JOB_FAILED)
- return "Reload failed for %s.";
- else if (result == JOB_TIMEOUT)
- return "Timed out reloading %s.";
- }
-
- return NULL;
-}
-
-static void job_print_status_message(Unit *u, JobType t, JobResult result) {
- const char *format;
-
- assert(u);
- assert(t >= 0);
- assert(t < _JOB_TYPE_MAX);
-
- DISABLE_WARNING_FORMAT_NONLITERAL;
-
- if (t == JOB_START) {
- format = job_get_status_message_format(u, t, result);
- if (!format)
- return;
-
- switch (result) {
-
- case JOB_DONE:
- if (u->condition_result)
- unit_status_printf(u, ANSI_GREEN_ON " OK " ANSI_HIGHLIGHT_OFF, format);
- break;
-
- case JOB_TIMEOUT:
- manager_flip_auto_status(u->manager, true);
- unit_status_printf(u, ANSI_HIGHLIGHT_RED_ON " TIME " ANSI_HIGHLIGHT_OFF, format);
- break;
-
- case JOB_FAILED: {
- bool quotes;
-
- quotes = chars_intersect(u->id, SHELL_NEED_QUOTES);
-
- manager_flip_auto_status(u->manager, true);
- unit_status_printf(u, ANSI_HIGHLIGHT_RED_ON "FAILED" ANSI_HIGHLIGHT_OFF, format);
- manager_status_printf(u->manager, STATUS_TYPE_NORMAL, NULL,
- "See \"systemctl status %s%s%s\" for details.",
- quotes ? "'" : "", u->id, quotes ? "'" : "");
- break;
- }
-
- case JOB_DEPENDENCY:
- manager_flip_auto_status(u->manager, true);
- unit_status_printf(u, ANSI_HIGHLIGHT_YELLOW_ON "DEPEND" ANSI_HIGHLIGHT_OFF, format);
- break;
-
- case JOB_ASSERT:
- manager_flip_auto_status(u->manager, true);
- unit_status_printf(u, ANSI_HIGHLIGHT_YELLOW_ON "ASSERT" ANSI_HIGHLIGHT_OFF, format);
- break;
-
- case JOB_UNSUPPORTED:
- manager_flip_auto_status(u->manager, true);
- unit_status_printf(u, ANSI_HIGHLIGHT_YELLOW_ON "UNSUPP" ANSI_HIGHLIGHT_OFF, format);
- break;
-
- default:
- ;
- }
-
- } else if (t == JOB_STOP || t == JOB_RESTART) {
-
- format = job_get_status_message_format(u, t, result);
- if (!format)
- return;
-
- switch (result) {
-
- case JOB_TIMEOUT:
- manager_flip_auto_status(u->manager, true);
- unit_status_printf(u, ANSI_HIGHLIGHT_RED_ON " TIME " ANSI_HIGHLIGHT_OFF, format);
- break;
-
- case JOB_DONE:
- case JOB_FAILED:
- unit_status_printf(u, ANSI_GREEN_ON " OK " ANSI_HIGHLIGHT_OFF, format);
- break;
-
- default:
- ;
- }
-
- } else if (t == JOB_VERIFY_ACTIVE) {
-
- /* When verify-active detects the unit is inactive, report it.
- * Most likely a DEPEND warning from a requisiting unit will
- * occur next and it's nice to see what was requisited. */
- if (result == JOB_SKIPPED)
- unit_status_printf(u, ANSI_HIGHLIGHT_ON " INFO " ANSI_HIGHLIGHT_OFF, "%s is not active.");
- }
-
- REENABLE_WARNING;
-}
-
-static void job_log_status_message(Unit *u, JobType t, JobResult result) {
- const char *format;
- char buf[LINE_MAX];
-
- assert(u);
- assert(t >= 0);
- assert(t < _JOB_TYPE_MAX);
-
- /* Skip this if it goes to the console. since we already print
- * to the console anyway... */
-
- if (log_on_console())
- return;
-
- format = job_get_status_message_format_try_harder(u, t, result);
- if (!format)
- return;
-
- DISABLE_WARNING_FORMAT_NONLITERAL;
- snprintf(buf, sizeof(buf), format, unit_description(u));
- REENABLE_WARNING;
-
- if (t == JOB_START) {
- sd_id128_t mid;
-
- mid = result == JOB_DONE ? SD_MESSAGE_UNIT_STARTED : SD_MESSAGE_UNIT_FAILED;
- log_unit_struct(u->id,
- result == JOB_DONE ? LOG_INFO : LOG_ERR,
- LOG_MESSAGE_ID(mid),
- LOG_MESSAGE("%s", buf),
- "RESULT=%s", job_result_to_string(result),
- NULL);
-
- } else if (t == JOB_STOP)
- log_unit_struct(u->id,
- result == JOB_DONE ? LOG_INFO : LOG_ERR,
- LOG_MESSAGE_ID(SD_MESSAGE_UNIT_STOPPED),
- LOG_MESSAGE("%s", buf),
- "RESULT=%s", job_result_to_string(result),
- NULL);
-
- else if (t == JOB_RELOAD)
- log_unit_struct(u->id,
- result == JOB_DONE ? LOG_INFO : LOG_ERR,
- LOG_MESSAGE_ID(SD_MESSAGE_UNIT_RELOADED),
- LOG_MESSAGE("%s", buf),
- "RESULT=%s", job_result_to_string(result),
- NULL);
-}
-
-int job_finish_and_invalidate(Job *j, JobResult result, bool recursive) {
- Unit *u;
- Unit *other;
- JobType t;
- Iterator i;
-
- assert(j);
- assert(j->installed);
- assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION);
-
- u = j->unit;
- t = j->type;
-
- j->result = result;
-
- log_unit_debug(u->id, "Job %s/%s finished, result=%s",
- u->id, job_type_to_string(t), job_result_to_string(result));
-
- job_print_status_message(u, t, result);
- job_log_status_message(u, t, result);
-
- job_add_to_dbus_queue(j);
-
- /* Patch restart jobs so that they become normal start jobs */
- if (result == JOB_DONE && t == JOB_RESTART) {
-
- job_change_type(j, JOB_START);
- job_set_state(j, JOB_WAITING);
-
- job_add_to_run_queue(j);
-
- goto finish;
- }
-
- if (result == JOB_FAILED || result == JOB_INVALID)
- j->manager->n_failed_jobs ++;
-
- job_uninstall(j);
- job_free(j);
-
- /* Fail depending jobs on failure */
- if (result != JOB_DONE && recursive) {
-
- if (t == JOB_START ||
- t == JOB_VERIFY_ACTIVE) {
-
- SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY], i)
- if (other->job &&
- (other->job->type == JOB_START ||
- other->job->type == JOB_VERIFY_ACTIVE))
- job_finish_and_invalidate(other->job, JOB_DEPENDENCY, true);
-
- SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i)
- if (other->job &&
- (other->job->type == JOB_START ||
- other->job->type == JOB_VERIFY_ACTIVE))
- job_finish_and_invalidate(other->job, JOB_DEPENDENCY, true);
-
- SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i)
- if (other->job &&
- !other->job->override &&
- (other->job->type == JOB_START ||
- other->job->type == JOB_VERIFY_ACTIVE))
- job_finish_and_invalidate(other->job, JOB_DEPENDENCY, true);
-
- } else if (t == JOB_STOP) {
-
- SET_FOREACH(other, u->dependencies[UNIT_CONFLICTED_BY], i)
- if (other->job &&
- (other->job->type == JOB_START ||
- other->job->type == JOB_VERIFY_ACTIVE))
- job_finish_and_invalidate(other->job, JOB_DEPENDENCY, true);
- }
- }
-
- /* Trigger OnFailure dependencies that are not generated by
- * the unit itself. We don't treat JOB_CANCELED as failure in
- * this context. And JOB_FAILURE is already handled by the
- * unit itself. */
- if (result == JOB_TIMEOUT || result == JOB_DEPENDENCY) {
- log_unit_struct(u->id,
- LOG_NOTICE,
- "JOB_TYPE=%s", job_type_to_string(t),
- "JOB_RESULT=%s", job_result_to_string(result),
- LOG_MESSAGE("Job %s/%s failed with result '%s'.",
- u->id,
- job_type_to_string(t),
- job_result_to_string(result)),
- NULL);
-
- unit_start_on_failure(u);
- }
-
- unit_trigger_notify(u);
-
-finish:
- /* Try to start the next jobs that can be started */
- SET_FOREACH(other, u->dependencies[UNIT_AFTER], i)
- if (other->job)
- job_add_to_run_queue(other->job);
- SET_FOREACH(other, u->dependencies[UNIT_BEFORE], i)
- if (other->job)
- job_add_to_run_queue(other->job);
-
- manager_check_finished(u->manager);
-
- return 0;
-}
-
-static int job_dispatch_timer(sd_event_source *s, uint64_t monotonic, void *userdata) {
- Job *j = userdata;
- Unit *u;
-
- assert(j);
- assert(s == j->timer_event_source);
-
- log_unit_warning(j->unit->id, "Job %s/%s timed out.", j->unit->id, job_type_to_string(j->type));
-
- u = j->unit;
- job_finish_and_invalidate(j, JOB_TIMEOUT, true);
-
- failure_action(u->manager, u->job_timeout_action, u->job_timeout_reboot_arg);
-
- return 0;
-}
-
-int job_start_timer(Job *j) {
- int r;
-
- if (j->timer_event_source)
- return 0;
-
- j->begin_usec = now(CLOCK_MONOTONIC);
-
- if (j->unit->job_timeout <= 0)
- return 0;
-
- r = sd_event_add_time(
- j->manager->event,
- &j->timer_event_source,
- CLOCK_MONOTONIC,
- j->begin_usec + j->unit->job_timeout, 0,
- job_dispatch_timer, j);
- if (r < 0)
- return r;
-
- return 0;
-}
-
-void job_add_to_run_queue(Job *j) {
- assert(j);
- assert(j->installed);
-
- if (j->in_run_queue)
- return;
-
- if (!j->manager->run_queue)
- sd_event_source_set_enabled(j->manager->run_queue_event_source, SD_EVENT_ONESHOT);
-
- LIST_PREPEND(run_queue, j->manager->run_queue, j);
- j->in_run_queue = true;
-}
-
-void job_add_to_dbus_queue(Job *j) {
- assert(j);
- assert(j->installed);
-
- if (j->in_dbus_queue)
- return;
-
- /* We don't check if anybody is subscribed here, since this
- * job might just have been created and not yet assigned to a
- * connection/client. */
-
- LIST_PREPEND(dbus_queue, j->manager->dbus_job_queue, j);
- j->in_dbus_queue = true;
-}
-
-char *job_dbus_path(Job *j) {
- char *p;
-
- assert(j);
-
- if (asprintf(&p, "/org/freedesktop/systemd1/job/%"PRIu32, j->id) < 0)
- return NULL;
-
- return p;
-}
-
-int job_serialize(Job *j, FILE *f, FDSet *fds) {
- fprintf(f, "job-id=%u\n", j->id);
- fprintf(f, "job-type=%s\n", job_type_to_string(j->type));
- fprintf(f, "job-state=%s\n", job_state_to_string(j->state));
- fprintf(f, "job-override=%s\n", yes_no(j->override));
- fprintf(f, "job-irreversible=%s\n", yes_no(j->irreversible));
- fprintf(f, "job-sent-dbus-new-signal=%s\n", yes_no(j->sent_dbus_new_signal));
- fprintf(f, "job-ignore-order=%s\n", yes_no(j->ignore_order));
-
- if (j->begin_usec > 0)
- fprintf(f, "job-begin="USEC_FMT"\n", j->begin_usec);
-
- bus_track_serialize(j->clients, f);
-
- /* End marker */
- fputc('\n', f);
- return 0;
-}
-
-int job_deserialize(Job *j, FILE *f, FDSet *fds) {
- assert(j);
-
- 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-id")) {
-
- if (safe_atou32(v, &j->id) < 0)
- log_debug("Failed to parse job id value %s", v);
-
- } else if (streq(l, "job-type")) {
- JobType t;
-
- t = job_type_from_string(v);
- if (t < 0)
- log_debug("Failed to parse job type %s", v);
- else if (t >= _JOB_TYPE_MAX_IN_TRANSACTION)
- log_debug("Cannot deserialize job of type %s", v);
- else
- j->type = t;
-
- } else if (streq(l, "job-state")) {
- JobState s;
-
- s = job_state_from_string(v);
- if (s < 0)
- log_debug("Failed to parse job state %s", v);
- else
- job_set_state(j, s);
-
- } else if (streq(l, "job-override")) {
- int b;
-
- b = parse_boolean(v);
- if (b < 0)
- log_debug("Failed to parse job override flag %s", v);
- else
- j->override = j->override || b;
-
- } else if (streq(l, "job-irreversible")) {
- int b;
-
- b = parse_boolean(v);
- if (b < 0)
- log_debug("Failed to parse job irreversible flag %s", v);
- else
- j->irreversible = j->irreversible || b;
-
- } else if (streq(l, "job-sent-dbus-new-signal")) {
- int b;
-
- b = parse_boolean(v);
- if (b < 0)
- log_debug("Failed to parse job sent_dbus_new_signal flag %s", v);
- else
- j->sent_dbus_new_signal = j->sent_dbus_new_signal || b;
-
- } else if (streq(l, "job-ignore-order")) {
- int b;
-
- b = parse_boolean(v);
- if (b < 0)
- log_debug("Failed to parse job ignore_order flag %s", v);
- else
- j->ignore_order = j->ignore_order || b;
-
- } else if (streq(l, "job-begin")) {
- unsigned long long ull;
-
- if (sscanf(v, "%llu", &ull) != 1)
- log_debug("Failed to parse job-begin value %s", v);
- else
- j->begin_usec = ull;
-
- } else if (streq(l, "subscribed")) {
-
- if (strv_extend(&j->deserialized_clients, v) < 0)
- return log_oom();
- }
- }
-}
-
-int job_coldplug(Job *j) {
- int r;
-
- assert(j);
-
- /* After deserialization is complete and the bus connection
- * set up again, let's start watching our subscribers again */
- r = bus_track_coldplug(j->manager, &j->clients, &j->deserialized_clients);
- if (r < 0)
- return r;
-
- if (j->state == JOB_WAITING)
- job_add_to_run_queue(j);
-
- if (j->begin_usec == 0 || j->unit->job_timeout == 0)
- return 0;
-
- if (j->timer_event_source)
- j->timer_event_source = sd_event_source_unref(j->timer_event_source);
-
- r = sd_event_add_time(
- j->manager->event,
- &j->timer_event_source,
- CLOCK_MONOTONIC,
- j->begin_usec + j->unit->job_timeout, 0,
- job_dispatch_timer, j);
- if (r < 0)
- log_debug_errno(r, "Failed to restart timeout for job: %m");
-
- return r;
-}
-
-void job_shutdown_magic(Job *j) {
- assert(j);
-
- /* The shutdown target gets some special treatment here: we
- * tell the kernel to begin with flushing its disk caches, to
- * optimize shutdown time a bit. Ideally we wouldn't hardcode
- * this magic into PID 1. However all other processes aren't
- * options either since they'd exit much sooner than PID 1 and
- * asynchronous sync() would cause their exit to be
- * delayed. */
-
- if (j->type != JOB_START)
- return;
-
- if (j->unit->manager->running_as != SYSTEMD_SYSTEM)
- return;
-
- if (!unit_has_name(j->unit, SPECIAL_SHUTDOWN_TARGET))
- return;
-
- /* In case messages on console has been disabled on boot */
- j->unit->manager->no_console_output = false;
-
- if (detect_container(NULL) > 0)
- return;
-
- asynchronous_sync();
-}
-
-int job_get_timeout(Job *j, uint64_t *timeout) {
- Unit *u = j->unit;
- uint64_t x = -1, y = -1;
- int r = 0, q = 0;
-
- assert(u);
-
- if (j->timer_event_source) {
- r = sd_event_source_get_time(j->timer_event_source, &x);
- if (r < 0)
- return r;
- r = 1;
- }
-
- if (UNIT_VTABLE(u)->get_timeout) {
- q = UNIT_VTABLE(u)->get_timeout(u, &y);
- if (q < 0)
- return q;
- }
-
- if (r == 0 && q == 0)
- return 0;
-
- *timeout = MIN(x, y);
-
- return 1;
-}
-
-static const char* const job_state_table[_JOB_STATE_MAX] = {
- [JOB_WAITING] = "waiting",
- [JOB_RUNNING] = "running"
-};
-
-DEFINE_STRING_TABLE_LOOKUP(job_state, JobState);
-
-static const char* const job_type_table[_JOB_TYPE_MAX] = {
- [JOB_START] = "start",
- [JOB_VERIFY_ACTIVE] = "verify-active",
- [JOB_STOP] = "stop",
- [JOB_RELOAD] = "reload",
- [JOB_RELOAD_OR_START] = "reload-or-start",
- [JOB_RESTART] = "restart",
- [JOB_TRY_RESTART] = "try-restart",
- [JOB_NOP] = "nop",
-};
-
-DEFINE_STRING_TABLE_LOOKUP(job_type, JobType);
-
-static const char* const job_mode_table[_JOB_MODE_MAX] = {
- [JOB_FAIL] = "fail",
- [JOB_REPLACE] = "replace",
- [JOB_REPLACE_IRREVERSIBLY] = "replace-irreversibly",
- [JOB_ISOLATE] = "isolate",
- [JOB_FLUSH] = "flush",
- [JOB_IGNORE_DEPENDENCIES] = "ignore-dependencies",
- [JOB_IGNORE_REQUIREMENTS] = "ignore-requirements",
-};
-
-DEFINE_STRING_TABLE_LOOKUP(job_mode, JobMode);
-
-static const char* const job_result_table[_JOB_RESULT_MAX] = {
- [JOB_DONE] = "done",
- [JOB_CANCELED] = "canceled",
- [JOB_TIMEOUT] = "timeout",
- [JOB_FAILED] = "failed",
- [JOB_DEPENDENCY] = "dependency",
- [JOB_SKIPPED] = "skipped",
- [JOB_INVALID] = "invalid",
- [JOB_ASSERT] = "assert",
- [JOB_UNSUPPORTED] = "unsupported",
-};
-
-DEFINE_STRING_TABLE_LOOKUP(job_result, JobResult);
~ianmdlvl / elogind.git / blobdiff