errors: refer to systemctl status when useful

[elogind.git] / src / automount.c

diff --git a/src/automount.c b/src/automount.c
index 39eb3dd01aafd677e64624c8f1b8745b0e422acc..c557b6ebb212050066461b455d6abda0ccfeb75e 100644 (file)
--- a/src/automount.c
+++ b/src/automount.c
@@ -1,4 +1,4 @@
-/*-*- Mode: C; c-basic-offset: 8 -*-*/
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
 
 /***
   This file is part of systemd.
@@ -36,12 +36,14 @@
 #include "unit-name.h"
 #include "dbus-automount.h"
 #include "bus-errors.h"
+#include "special.h"
+#include "label.h"
 
 static const UnitActiveState state_translation_table[_AUTOMOUNT_STATE_MAX] = {
         [AUTOMOUNT_DEAD] = UNIT_INACTIVE,
         [AUTOMOUNT_WAITING] = UNIT_ACTIVE,
         [AUTOMOUNT_RUNNING] = UNIT_ACTIVE,
-        [AUTOMOUNT_MAINTENANCE] = UNIT_MAINTENANCE
+        [AUTOMOUNT_FAILED] = UNIT_FAILED
 };
 
 static int open_dev_autofs(Manager *m);
@@ -145,6 +147,20 @@ static int automount_add_mount_links(Automount *a) {
         return 0;
 }
 
+static int automount_add_default_dependencies(Automount *a) {
+        int r;
+
+        assert(a);
+
+        if (a->meta.manager->running_as == MANAGER_SYSTEM) {
+
+                if ((r = unit_add_two_dependencies_by_name(UNIT(a), UNIT_BEFORE, UNIT_CONFLICTED_BY, SPECIAL_UMOUNT_TARGET, NULL, true)) < 0)
+                        return r;
+        }
+
+        return 0;
+}
+
 static int automount_verify(Automount *a) {
         bool b;
         char *e;
@@ -153,6 +169,11 @@ static int automount_verify(Automount *a) {
         if (a->meta.load_state != UNIT_LOADED)
                 return 0;
 
+        if (path_equal(a->where, "/")) {
+                log_error("Cannot have an automount unit for the root directory. Refusing.");
+                return -EINVAL;
+        }
+
         if (!(e = unit_name_from_path(a->where, ".automount")))
                 return -ENOMEM;
 
@@ -194,6 +215,10 @@ static int automount_load(Unit *u) {
 
                 if ((r = unit_add_dependency(u, UNIT_BEFORE, UNIT(a->mount), true)) < 0)
                         return r;
+
+                if (a->meta.default_dependencies)
+                        if ((r = automount_add_default_dependencies(a)) < 0)
+                                return r;
         }
 
         return automount_verify(a);
@@ -266,7 +291,7 @@ static void automount_enter_dead(Automount *a, bool success) {
         if (!success)
                 a->failure = true;
 
-        automount_set_state(a, a->failure ? AUTOMOUNT_MAINTENANCE : AUTOMOUNT_DEAD);
+        automount_set_state(a, a->failure ? AUTOMOUNT_FAILED : AUTOMOUNT_DEAD);
 }
 
 static int open_dev_autofs(Manager *m) {
@@ -277,6 +302,8 @@ static int open_dev_autofs(Manager *m) {
         if (m->dev_autofs_fd >= 0)
                 return m->dev_autofs_fd;
 
+       label_fix("/dev/autofs");
+
         if ((m->dev_autofs_fd = open("/dev/autofs", O_CLOEXEC|O_RDONLY)) < 0) {
                 log_error("Failed to open /dev/autofs: %s", strerror(errno));
                 return -errno;
@@ -415,6 +442,8 @@ int automount_send_ready(Automount *a, int status) {
         else
                 log_debug("Sending success.");
 
+        r = 0;
+
         /* Autofs thankfully does not hand out 0 as a token */
         while ((token = PTR_TO_UINT(set_steal_first(a->tokens)))) {
                 int k;
@@ -431,8 +460,6 @@ int automount_send_ready(Automount *a, int status) {
                         r = k;
         }
 
-        r = 0;
-
 fail:
         if (ioctl_fd >= 0)
                 close_nointr_nofail(ioctl_fd);
@@ -541,6 +568,13 @@ static void automount_enter_runnning(Automount *a) {
 
         dbus_error_init(&error);
 
+        /* We don't take mount requests anymore if we are supposed to
+         * shut down anyway */
+        if (a->meta.job && a->meta.job->type == JOB_STOP) {
+                automount_send_ready(a, -EHOSTDOWN);
+                return;
+        }
+
         mkdir_p(a->where, a->directory_mode);
 
         /* Before we do anything, let's see if somebody is playing games with us? */
@@ -569,7 +603,7 @@ static int automount_start(Unit *u) {
 
         assert(a);
 
-        assert(a->state == AUTOMOUNT_DEAD || a->state == AUTOMOUNT_MAINTENANCE);
+        assert(a->state == AUTOMOUNT_DEAD || a->state == AUTOMOUNT_FAILED);
 
         if (path_is_mount_point(a->where)) {
                 log_error("Path %s is already a mount point, refusing start for %s", a->where, u->meta.id);
@@ -698,6 +732,9 @@ static bool automount_check_gc(Unit *u) {
 
         assert(a);
 
+        if (!a->mount)
+                return false;
+
         return UNIT_VTABLE(UNIT(a->mount))->check_gc(UNIT(a->mount));
 }
 
@@ -757,11 +794,22 @@ static void automount_shutdown(Manager *m) {
                 close_nointr_nofail(m->dev_autofs_fd);
 }
 
+static void automount_reset_failed(Unit *u) {
+        Automount *a = AUTOMOUNT(u);
+
+        assert(a);
+
+        if (a->state == AUTOMOUNT_FAILED)
+                automount_set_state(a, AUTOMOUNT_DEAD);
+
+        a->failure = false;
+}
+
 static const char* const automount_state_table[_AUTOMOUNT_STATE_MAX] = {
         [AUTOMOUNT_DEAD] = "dead",
         [AUTOMOUNT_WAITING] = "waiting",
         [AUTOMOUNT_RUNNING] = "running",
-        [AUTOMOUNT_MAINTENANCE] = "maintenance"
+        [AUTOMOUNT_FAILED] = "failed"
 };
 
 DEFINE_STRING_TABLE_LOOKUP(automount_state, AutomountState);
@@ -793,6 +841,9 @@ const UnitVTable automount_vtable = {
 
         .fd_event = automount_fd_event,
 
+        .reset_failed = automount_reset_failed,
+
+        .bus_interface = "org.freedesktop.systemd1.Automount",
         .bus_message_handler = bus_automount_message_handler,
 
         .shutdown = automount_shutdown