units: introduce umount.target for unmounting all file systems

[elogind.git] / src / mount.c

diff --git a/src/mount.c b/src/mount.c
index 86c5b0a8cf1b2e474f92d401b35db9ca28703a70..57c258f9f255908b86eba0d664f7b68fd2e76407 100644 (file)
--- a/src/mount.c
+++ b/src/mount.c
@@ -60,13 +60,15 @@ static void mount_init(Unit *u) {
         assert(u->meta.load_state == UNIT_STUB);
 
         m->timeout_usec = DEFAULT_TIMEOUT_USEC;
+        m->directory_mode = 0755;
+
         exec_context_init(&m->exec_context);
 
         /* We need to make sure that /bin/mount is always called in
          * the same process group as us, so that the autofs kernel
          * side doesn't send us another mount request while we are
          * already trying to comply its last one. */
-        m->exec_context.no_setsid = true;
+        m->exec_context.same_pgrp = true;
 
         m->timer_watch.type = WATCH_INVALID;
 
@@ -251,7 +253,7 @@ static int mount_add_target_links(Mount *m) {
         else
                 target = SPECIAL_LOCAL_FS_TARGET;
 
-        if ((r = manager_load_unit(m->meta.manager, target, NULL, &tu)) < 0)
+        if ((r = manager_load_unit(m->meta.manager, target, NULL, NULL, &tu)) < 0)
                 return r;
 
         if (automount && m->meta.manager->running_as == MANAGER_SYSTEM) {
@@ -260,11 +262,7 @@ static int mount_add_target_links(Mount *m) {
                 if ((r = unit_load_related_unit(UNIT(m), ".automount", &am)) < 0)
                         return r;
 
-                if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(am), true)) < 0)
-                        return r;
-
-                return unit_add_dependency(UNIT(am), UNIT_BEFORE, tu, true);
-
+                return unit_add_two_dependencies(tu, UNIT_AFTER, UNIT_WANTS, UNIT(am), true);
         } else {
 
                 if (!noauto && handle)
@@ -369,6 +367,10 @@ static int mount_load(Unit *u) {
 
                 if ((r = unit_add_default_cgroup(u)) < 0)
                         return r;
+
+                if (m->meta.default_dependencies && !path_equal(m->where, "/"))
+                        if ((r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true)) < 0)
+                                return r;
         }
 
         return mount_verify(m);
@@ -497,7 +499,8 @@ static void mount_dump(Unit *u, FILE *f, const char *prefix) {
                 "%sFrom /etc/fstab: %s\n"
                 "%sFrom /proc/self/mountinfo: %s\n"
                 "%sFrom fragment: %s\n"
-                "%sKillMode: %s\n",
+                "%sKillMode: %s\n"
+                "%sDirectoryMode: %04o\n",
                 prefix, mount_state_to_string(m->state),
                 prefix, m->where,
                 prefix, strna(p->what),
@@ -506,7 +509,8 @@ static void mount_dump(Unit *u, FILE *f, const char *prefix) {
                 prefix, yes_no(m->from_etc_fstab),
                 prefix, yes_no(m->from_proc_self_mountinfo),
                 prefix, yes_no(m->from_fragment),
-                prefix, kill_mode_to_string(m->kill_mode));
+                prefix, kill_mode_to_string(m->kill_mode),
+                prefix, m->directory_mode);
 
         if (m->control_pid > 0)
                 fprintf(f,
@@ -534,6 +538,7 @@ static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) {
                             m->meta.manager->environment,
                             true,
                             true,
+                            true,
                             m->meta.manager->confirm_spawn,
                             m->meta.cgroup_bondings,
                             &pid)) < 0)
@@ -662,6 +667,8 @@ static void mount_enter_mounting(Mount *m) {
         m->control_command_id = MOUNT_EXEC_MOUNT;
         m->control_command = m->exec_command + MOUNT_EXEC_MOUNT;
 
+        mkdir_p(m->where, m->directory_mode);
+
         if (m->from_fragment)
                 r = exec_command_set(
                                 m->control_command,
@@ -934,7 +941,7 @@ static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
         m->failure = m->failure || !success;
 
         if (m->control_command) {
-                exec_status_fill(&m->control_command->exec_status, pid, code, status);
+                exec_status_exit(&m->control_command->exec_status, pid, code, status);
                 m->control_command = NULL;
                 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
         }
@@ -1546,6 +1553,7 @@ const UnitVTable mount_vtable = {
         .no_alias = true,
         .no_instances = true,
         .no_isolate = true,
+        .show_status = true,
 
         .init = mount_init,
         .load = mount_load,