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swap: listen for POLLPRI events on /proc/swaps if available
[elogind.git] / src / mount.c
diff --git a/src/mount.c b/src/mount.c
index fefe76bb4daa74f0a4b41d1bfda9a654f4b91082..284fcb94b2d179c82f9921cbe2752cf9df73febf 100644 (file)
--- a/src/mount.c
+++ b/src/mount.c
@@ -333,7 +333,7 @@ static bool mount_is_bind(MountParameters *p) {
 
 static int mount_add_device_links(Mount *m) {
         MountParameters *p;
-        bool nofail, noauto;
+        int r;
 
         assert(m);
 
@@ -344,18 +344,45 @@ static int mount_add_device_links(Mount *m) {
         else
                 return 0;
 
-        if (!p->what || path_equal(m->where, "/"))
+        if (!p->what)
                 return 0;
 
-        if (mount_is_bind(p))
-                return 0;
+        if (!mount_is_bind(p) && !path_equal(m->where, "/")) {
+                bool nofail, noauto;
 
-        noauto = !!mount_test_option(p->options, MNTOPT_NOAUTO);
-        nofail = !!mount_test_option(p->options, "nofail");
+                noauto = !!mount_test_option(p->options, MNTOPT_NOAUTO);
+                nofail = !!mount_test_option(p->options, "nofail");
+
+                if ((r = unit_add_node_link(UNIT(m), p->what,
+                                            !noauto && nofail &&
+                                            UNIT(m)->meta.manager->running_as == MANAGER_SYSTEM)) < 0)
+                        return r;
+        }
+
+        if (p->passno > 0 &&
+            UNIT(m)->meta.manager->running_as == MANAGER_SYSTEM) {
+                char *name;
+                Unit *fsck;
+                /* Let's add in the fsck service */
 
-        return unit_add_node_link(UNIT(m), p->what,
-                                  !noauto && nofail &&
-                                  UNIT(m)->meta.manager->running_as == MANAGER_SYSTEM);
+                if (!(name = unit_name_from_path_instance("fsck", p->what, ".service")))
+                        return -ENOMEM;
+
+                if ((r = manager_load_unit_prepare(m->meta.manager, name, NULL, NULL, &fsck)) < 0) {
+                        log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
+                        free(name);
+                        return r;
+                }
+
+                free(name);
+
+                SERVICE(fsck)->fsck_passno = p->passno;
+
+                if ((r = unit_add_two_dependencies(UNIT(m), UNIT_AFTER, UNIT_WANTS, fsck, true)) < 0)
+                        return r;
+        }
+
+        return 0;
 }
 
 static int mount_add_default_dependencies(Mount *m) {
@@ -423,8 +450,6 @@ static int mount_load(Unit *u) {
 
         /* This is a new unit? Then let's add in some extras */
         if (u->meta.load_state == UNIT_LOADED) {
-                const char *what = NULL;
-
                 if (m->meta.fragment_path)
                         m->from_fragment = true;
 
@@ -438,13 +463,6 @@ static int mount_load(Unit *u) {
                         if ((r = unit_set_description(u, m->where)) < 0)
                                 return r;
 
-                if (m->from_fragment && m->parameters_fragment.what)
-                        what = m->parameters_fragment.what;
-                else if (m->from_etc_fstab && m->parameters_etc_fstab.what)
-                        what = m->parameters_etc_fstab.what;
-                else if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.what)
-                        what = m->parameters_proc_self_mountinfo.what;
-
                 if ((r = mount_add_device_links(m)) < 0)
                         return r;
 
@@ -874,10 +892,8 @@ static void mount_enter_remounting(Mount *m, bool success) {
         else
                 r = -ENOENT;
 
-        if (r < 0) {
-                r = -ENOMEM;
+        if (r < 0)
                 goto fail;
-        }
 
         mount_unwatch_control_pid(m);
 
@@ -902,13 +918,13 @@ static int mount_start(Unit *u) {
          * please! */
         if (m->state == MOUNT_UNMOUNTING ||
             m->state == MOUNT_UNMOUNTING_SIGTERM ||
-            m->state == MOUNT_UNMOUNTING_SIGKILL)
+            m->state == MOUNT_UNMOUNTING_SIGKILL ||
+            m->state == MOUNT_MOUNTING_SIGTERM ||
+            m->state == MOUNT_MOUNTING_SIGKILL)
                 return -EAGAIN;
 
         /* Already on it! */
-        if (m->state == MOUNT_MOUNTING ||
-            m->state == MOUNT_MOUNTING_SIGTERM ||
-            m->state == MOUNT_MOUNTING_SIGKILL)
+        if (m->state == MOUNT_MOUNTING)
                 return 0;
 
         assert(m->state == MOUNT_DEAD || m->state == MOUNT_FAILED);
@@ -926,14 +942,14 @@ static int mount_stop(Unit *u) {
         /* Already on it */
         if (m->state == MOUNT_UNMOUNTING ||
             m->state == MOUNT_UNMOUNTING_SIGKILL ||
-            m->state == MOUNT_UNMOUNTING_SIGTERM)
+            m->state == MOUNT_UNMOUNTING_SIGTERM ||
+            m->state == MOUNT_MOUNTING_SIGTERM ||
+            m->state == MOUNT_MOUNTING_SIGKILL)
                 return 0;
 
         assert(m->state == MOUNT_MOUNTING ||
                m->state == MOUNT_MOUNTING_DONE ||
                m->state == MOUNT_MOUNTED ||
-               m->state == MOUNT_MOUNTING_SIGTERM ||
-               m->state == MOUNT_MOUNTING_SIGKILL ||
                m->state == MOUNT_REMOUNTING ||
                m->state == MOUNT_REMOUNTING_SIGTERM ||
                m->state == MOUNT_REMOUNTING_SIGKILL);
@@ -1057,7 +1073,7 @@ 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_exit(&m->control_command->exec_status, pid, code, status);
+                exec_status_exit(&m->control_command->exec_status, pid, code, status, m->exec_context.utmp_id);
                 m->control_command = NULL;
                 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
         }
@@ -1172,6 +1188,7 @@ static int mount_add_one(
                 const char *where,
                 const char *options,
                 const char *fstype,
+                int passno,
                 bool from_proc_self_mountinfo,
                 bool set_flags) {
         int r;
@@ -1259,6 +1276,8 @@ static int mount_add_one(
         free(p->fstype);
         p->fstype = f;
 
+        p->passno = passno;
+
         unit_add_to_dbus_queue(u);
 
         return 0;
@@ -1347,7 +1366,7 @@ static int mount_find_pri(char *options) {
 
 static int mount_load_etc_fstab(Manager *m) {
         FILE *f;
-        int r;
+        int r = 0;
         struct mntent* me;
 
         assert(m);
@@ -1358,6 +1377,7 @@ static int mount_load_etc_fstab(Manager *m) {
 
         while ((me = getmntent(f))) {
                 char *where, *what;
+                int k;
 
                 if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) {
                         r = -ENOMEM;
@@ -1380,26 +1400,26 @@ static int mount_load_etc_fstab(Manager *m) {
                         int pri;
 
                         if ((pri = mount_find_pri(me->mnt_opts)) < 0)
-                                r = pri;
+                                k = pri;
                         else
-                                r = swap_add_one(m,
+                                k = swap_add_one(m,
                                                  what,
+                                                 NULL,
                                                  pri,
                                                  !!mount_test_option(me->mnt_opts, MNTOPT_NOAUTO),
                                                  !!mount_test_option(me->mnt_opts, "nofail"),
                                                  !!mount_test_option(me->mnt_opts, "comment=systemd.swapon"),
                                                  false);
                 } else
-                        r = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, false, false);
+                        k = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, me->mnt_passno, false, false);
 
                 free(what);
                 free(where);
 
                 if (r < 0)
-                        goto finish;
+                        r = k;
         }
 
-        r = 0;
 finish:
 
         endmntent(f);
@@ -1407,7 +1427,7 @@ finish:
 }
 
 static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
-        int r;
+        int r = 0;
         unsigned i;
         char *device, *path, *options, *options2, *fstype, *d, *p, *o;
 
@@ -1457,8 +1477,8 @@ static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
                         goto finish;
                 }
 
-                if ((r = mount_add_one(m, d, p, o, fstype, true, set_flags)) < 0)
-                        goto finish;
+                if ((k = mount_add_one(m, d, p, o, fstype, 0, true, set_flags)) < 0)
+                        r = k;
 
 clean_up:
                 free(device);
@@ -1471,8 +1491,6 @@ clean_up:
                 free(o);
         }
 
-        r = 0;
-
 finish:
         free(device);
         free(path);
@@ -1508,7 +1526,7 @@ static int mount_enumerate(Manager *m) {
                 m->mount_watch.fd = fileno(m->proc_self_mountinfo);
 
                 zero(ev);
-                ev.events = EPOLLERR;
+                ev.events = EPOLLPRI;
                 ev.data.ptr = &m->mount_watch;
 
                 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0)
@@ -1533,7 +1551,7 @@ void mount_fd_event(Manager *m, int events) {
         int r;
 
         assert(m);
-        assert(events == EPOLLERR);
+        assert(events & EPOLLPRI);
 
         /* The manager calls this for every fd event happening on the
          * /proc/self/mountinfo file, which informs us about mounting
@@ -1576,7 +1594,7 @@ void mount_fd_event(Manager *m, int events) {
 
                 } else if (mount->just_mounted || mount->just_changed) {
 
-                        /* New or changed entrymount */
+                        /* New or changed mount entry */
 
                         switch (mount->state) {
 
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