systemctl: introduce --ignore-dependencies

7 files changed, 54 insertions, 25 deletions

diff --git a/TODO b/TODO
index aa405e6b5c..6196a520f3 100644
--- a/TODO
+++ b/TODO
@@ -10,8 +10,6 @@ Bugs:
 
 Features:
 
-* add --ignore-deps to systemctl
-
 * increase password timeout
 
 * look up crypto partition mount points via fstab to show to the user when prompting for a password
diff --git a/man/systemctl.xml b/man/systemctl.xml
index c45b11a510..d37a7d95dc 100644
--- a/man/systemctl.xml
+++ b/man/systemctl.xml
@@ -159,6 +159,21 @@
                         </varlistentry>
 
                         <varlistentry>
+                                <term><option>--ignore-dependencies</option></term>
+
+                                <listitem><para>When enqueuing a new
+                                job ignore all its dependencies and
+                                execute it immediately. If passed no
+                                required units of the unit passed will
+                                be pulled in, and no ordering
+                                dependencies will be honoured. This is
+                                mostly a debugging and rescue tool for
+                                the administrator and should not be
+                                used by
+                                applications.</para></listitem>
+                        </varlistentry>
+
+                        <varlistentry>
                                 <term><option>--quiet</option></term>
                                 <term><option>-q</option></term>
 
diff --git a/src/job.c b/src/job.c
index 18a249592b..4700aab6ac 100644
--- a/src/job.c
+++ b/src/job.c
@@ -309,8 +309,12 @@ bool job_is_runnable(Job *j) {
 
         /* 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
-         * . */
+         * job type) or before (in the case of a 'negative' job
+         * type. */
+
+        /* First check if there is an override */
+        if (j->ignore_deps)
+                return true;
 
         if (j->type == JOB_START ||
             j->type == JOB_VERIFY_ACTIVE ||
@@ -667,7 +671,8 @@ DEFINE_STRING_TABLE_LOOKUP(job_type, JobType);
 static const char* const job_mode_table[_JOB_MODE_MAX] = {
         [JOB_FAIL] = "fail",
         [JOB_REPLACE] = "replace",
-        [JOB_ISOLATE] = "isolate"
+        [JOB_ISOLATE] = "isolate",
+        [JOB_IGNORE_DEPENDENCIES] = "ignore-dependencies"
 };
 
 DEFINE_STRING_TABLE_LOOKUP(job_mode, JobMode);
diff --git a/src/job.h b/src/job.h
index e42c9647a8..2499e6492a 100644
--- a/src/job.h
+++ b/src/job.h
@@ -66,6 +66,7 @@ enum JobMode {
         JOB_FAIL,
         JOB_REPLACE,
         JOB_ISOLATE,
+        JOB_IGNORE_DEPENDENCIES,
         _JOB_MODE_MAX,
         _JOB_MODE_INVALID = -1
 };
@@ -116,6 +117,7 @@ struct Job {
         bool in_dbus_queue:1;
         bool sent_dbus_new_signal:1;
         bool failed:1;
+        bool ignore_deps:1;
 };
 
 Job* job_new(Manager *m, JobType type, Unit *unit);
diff --git a/src/manager.c b/src/manager.c
index b2aa8ee45e..f266aaa01c 100644
--- a/src/manager.c
+++ b/src/manager.c
@@ -1412,6 +1412,7 @@ static int transaction_add_job_and_dependencies(
                 bool matters,
                 bool override,
                 bool conflicts,
+                bool ignore_deps,
                 DBusError *e,
                 Job **_ret) {
         Job *ret;
@@ -1459,18 +1460,20 @@ static int transaction_add_job_and_dependencies(
         if (!(ret = transaction_add_one_job(m, type, unit, override, &is_new)))
                 return -ENOMEM;
 
+        ret->ignore_deps = ret->ignore_deps || ignore_deps;
+
         /* Then, add a link to the job. */
         if (!job_dependency_new(by, ret, matters, conflicts))
                 return -ENOMEM;
 
-        if (is_new) {
+        if (is_new && !ignore_deps) {
                 Set *following;
 
                 /* If we are following some other unit, make sure we
                  * add all dependencies of everybody following. */
                 if (unit_following_set(ret->unit, &following) > 0) {
                         SET_FOREACH(dep, following, i)
-                                if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, false, override, false, e, NULL)) < 0) {
+                                if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, false, override, false, false, e, NULL)) < 0) {
                                         log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r));
 
                                         if (e)
@@ -1483,7 +1486,7 @@ static int transaction_add_job_and_dependencies(
                 /* Finally, recursively add in all dependencies. */
                 if (type == JOB_START || type == JOB_RELOAD_OR_START) {
                         SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUIRES], i)
-                                if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, true, override, false, e, NULL)) < 0) {
+                                if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, true, override, false, false, e, NULL)) < 0) {
                                         if (r != -EBADR)
                                                 goto fail;
 
@@ -1492,7 +1495,7 @@ static int transaction_add_job_and_dependencies(
                                 }
 
                         SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_BIND_TO], i)
-                                if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, true, override, false, e, NULL)) < 0) {
+                                if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, true, override, false, false, e, NULL)) < 0) {
 
                                         if (r != -EBADR)
                                                 goto fail;
@@ -1502,7 +1505,7 @@ static int transaction_add_job_and_dependencies(
                                 }
 
                         SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i)
-                                if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, !override, override, false, e, NULL)) < 0) {
+                                if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, !override, override, false, false, e, NULL)) < 0) {
                                         log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r));
 
                                         if (e)
@@ -1510,7 +1513,7 @@ static int transaction_add_job_and_dependencies(
                                 }
 
                         SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_WANTS], i)
-                                if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, false, false, false, e, NULL)) < 0) {
+                                if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, false, false, false, false, e, NULL)) < 0) {
                                         log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r));
 
                                         if (e)
@@ -1518,7 +1521,7 @@ static int transaction_add_job_and_dependencies(
                                 }
 
                         SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUISITE], i)
-                                if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, true, override, false, e, NULL)) < 0) {
+                                if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, true, override, false, false, e, NULL)) < 0) {
 
                                         if (r != -EBADR)
                                                 goto fail;
@@ -1528,7 +1531,7 @@ static int transaction_add_job_and_dependencies(
                                 }
 
                         SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUISITE_OVERRIDABLE], i)
-                                if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, !override, override, false, e, NULL)) < 0) {
+                                if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, !override, override, false, false, e, NULL)) < 0) {
                                         log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r));
 
                                         if (e)
@@ -1536,7 +1539,7 @@ static int transaction_add_job_and_dependencies(
                                 }
 
                         SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_CONFLICTS], i)
-                                if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, dep, ret, true, override, true, e, NULL)) < 0) {
+                                if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, dep, ret, true, override, true, false, e, NULL)) < 0) {
 
                                         if (r != -EBADR)
                                                 goto fail;
@@ -1546,7 +1549,7 @@ static int transaction_add_job_and_dependencies(
                                 }
 
                         SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_CONFLICTED_BY], i)
-                                if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, dep, ret, false, override, false, e, NULL)) < 0) {
+                                if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, dep, ret, false, override, false, false, e, NULL)) < 0) {
                                         log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r));
 
                                         if (e)
@@ -1556,7 +1559,7 @@ static int transaction_add_job_and_dependencies(
                 } else if (type == JOB_STOP || type == JOB_RESTART || type == JOB_TRY_RESTART) {
 
                         SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUIRED_BY], i)
-                                if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, true, override, false, e, NULL)) < 0) {
+                                if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, true, override, false, false, e, NULL)) < 0) {
 
                                         if (r != -EBADR)
                                                 goto fail;
@@ -1566,7 +1569,7 @@ static int transaction_add_job_and_dependencies(
                                 }
 
                         SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_BOUND_BY], i)
-                                if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, true, override, false, e, NULL)) < 0) {
+                                if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, true, override, false, false, e, NULL)) < 0) {
 
                                         if (r != -EBADR)
                                                 goto fail;
@@ -1613,7 +1616,7 @@ static int transaction_add_isolate_jobs(Manager *m) {
                 if (hashmap_get(m->transaction_jobs, u))
                         continue;
 
-                if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, u, NULL, true, false, false, NULL, NULL)) < 0)
+                if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, u, NULL, true, false, false, false, NULL, NULL)) < 0)
                         log_warning("Cannot add isolate job for unit %s, ignoring: %s", u->meta.id, strerror(-r));
         }
 
@@ -1641,7 +1644,7 @@ int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool ove
 
         log_debug("Trying to enqueue job %s/%s/%s", unit->meta.id, job_type_to_string(type), job_mode_to_string(mode));
 
-        if ((r = transaction_add_job_and_dependencies(m, type, unit, NULL, true, override, false, e, &ret)) < 0) {
+        if ((r = transaction_add_job_and_dependencies(m, type, unit, NULL, true, override, false, mode == JOB_IGNORE_DEPENDENCIES, e, &ret)) < 0) {
                 transaction_abort(m);
                 return r;
         }
diff --git a/src/systemctl-bash-completion.sh b/src/systemctl-bash-completion.sh
index 834e11dbea..f3420217b5 100644
--- a/src/systemctl-bash-completion.sh
+++ b/src/systemctl-bash-completion.sh
@@ -42,7 +42,7 @@ _systemctl () {
         local verb comps
 
         local -A OPTS=(
-               [STANDALONE]='--all -a --defaults --fail --failed --force -f --full --global
+               [STANDALONE]='--all -a --defaults --fail --ignore-dependencies --failed --force -f --full --global
                              --help -h --no-ask-password --no-block --no-reload --no-wall
                              --order --require --quiet -q --system --user --version'
                       [ARG]='--kill-mode --kill-who --property -p --signal -s --type -t'
diff --git a/src/systemctl.c b/src/systemctl.c
index df4fccc140..4a8b9a196f 100644
--- a/src/systemctl.c
+++ b/src/systemctl.c
@@ -60,7 +60,7 @@
 static const char *arg_type = NULL;
 static char **arg_property = NULL;
 static bool arg_all = false;
-static bool arg_fail = false;
+static const char *arg_job_mode = "replace";
 static bool arg_user = false;
 static bool arg_global = false;
 static bool arg_immediate = false;
@@ -1384,9 +1384,7 @@ static int start_unit(DBusConnection *bus, char **args, unsigned n) {
                 mode =
                         (streq(args[0], "isolate") ||
                          streq(args[0], "rescue")  ||
-                         streq(args[0], "emergency")) ? "isolate" :
-                                             arg_fail ? "fail" :
-                                                        "replace";
+                         streq(args[0], "emergency")) ? "isolate" : arg_job_mode;
 
                 one_name = table[verb_to_action(args[0])];
 
@@ -4198,6 +4196,8 @@ static int systemctl_help(void) {
                "     --full           Don't ellipsize unit names on output\n"
                "     --fail           When queueing a new job, fail if conflicting jobs are\n"
                "                      pending\n"
+               "     --ignore-dependencies\n"
+               "                      When queueing a new job, ignore all its dependencies\n"
                "  -q --quiet          Suppress output\n"
                "     --no-block       Do not wait until operation finished\n"
                "     --no-pager       Do not pipe output into a pager.\n"
@@ -4335,6 +4335,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
 
         enum {
                 ARG_FAIL = 0x100,
+                ARG_IGNORE_DEPENDENCIES,
                 ARG_VERSION,
                 ARG_USER,
                 ARG_SYSTEM,
@@ -4362,6 +4363,7 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                 { "failed",    no_argument,       NULL, ARG_FAILED    },
                 { "full",      no_argument,       NULL, ARG_FULL      },
                 { "fail",      no_argument,       NULL, ARG_FAIL      },
+                { "ignore-dependencies", no_argument, NULL, ARG_IGNORE_DEPENDENCIES },
                 { "user",      no_argument,       NULL, ARG_USER      },
                 { "system",    no_argument,       NULL, ARG_SYSTEM    },
                 { "global",    no_argument,       NULL, ARG_GLOBAL    },
@@ -4428,7 +4430,11 @@ static int systemctl_parse_argv(int argc, char *argv[]) {
                         break;
 
                 case ARG_FAIL:
-                        arg_fail = true;
+                        arg_job_mode = "fail";
+                        break;
+
+                case ARG_IGNORE_DEPENDENCIES:
+                        arg_job_mode = "ignore-dependencies";
                         break;
 
                 case ARG_USER: