From 2edd4434e5bc6e5c7948df742d82f4bcd6c415f3 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Mon, 12 Jul 2010 22:55:27 +0200
Subject: mount: add automatic start ordering dependencies for mounts

---
 src/automount.c | 22 +++++++++++++++++++---
 src/mount.c     | 24 ++++++++++++++++++++----
 src/swap.c      | 22 ++++++++++++++++++++++
 3 files changed, 61 insertions(+), 7 deletions(-)

(limited to 'src')

diff --git a/src/automount.c b/src/automount.c
index 934aa5f35d..00f3736b2f 100644
--- a/src/automount.c
+++ b/src/automount.c
@@ -146,6 +146,23 @@ 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_dependency_by_name(UNIT(a), UNIT_AFTER, SPECIAL_SYSINIT_TARGET, NULL, true)) < 0)
+                        return r;
+
+                if ((r = unit_add_two_dependencies_by_name(UNIT(a), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true)) < 0)
+                        return r;
+        }
+
+        return 0;
+}
+
 static int automount_verify(Automount *a) {
         bool b;
         char *e;
@@ -201,9 +218,8 @@ 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 &&
-                    a->meta.manager->running_as == MANAGER_SYSTEM)
-                        if ((r = unit_add_two_dependencies_by_name(UNIT(a), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true)) < 0)
+                if (a->meta.default_dependencies)
+                        if ((r = automount_add_default_dependencies(a)) < 0)
                                 return r;
         }
 
diff --git a/src/mount.c b/src/mount.c
index 30390de99d..5b0bc6bdf0 100644
--- a/src/mount.c
+++ b/src/mount.c
@@ -274,6 +274,24 @@ static int mount_add_target_links(Mount *m) {
         }
 }
 
+static int mount_add_default_dependencies(Mount *m) {
+        int r;
+
+        assert(m);
+
+        if (m->meta.manager->running_as == MANAGER_SYSTEM) {
+
+                if ((r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_SYSINIT_TARGET, NULL, true)) < 0)
+                        return r;
+
+                if (!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 0;
+}
+
 static int mount_verify(Mount *m) {
         bool b;
         char *e;
@@ -368,10 +386,8 @@ static int mount_load(Unit *u) {
                 if ((r = unit_add_default_cgroup(u)) < 0)
                         return r;
 
-                if (m->meta.default_dependencies &&
-                    m->meta.manager->running_as == MANAGER_SYSTEM &&
-                    !path_equal(m->where, "/"))
-                        if ((r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true)) < 0)
+                if (m->meta.default_dependencies)
+                        if ((r = mount_add_default_dependencies(m)) < 0)
                                 return r;
         }
 
diff --git a/src/swap.c b/src/swap.c
index 92035144ba..de468a0434 100644
--- a/src/swap.c
+++ b/src/swap.c
@@ -120,6 +120,24 @@ static int swap_add_target_links(Swap *s) {
         return unit_add_dependency(UNIT(s), UNIT_BEFORE, tu, true);
 }
 
+static int swap_add_default_dependencies(Swap *s) {
+        int r;
+
+        assert(s);
+
+        if (s->meta.manager->running_as == MANAGER_SYSTEM) {
+
+                if ((r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_SYSINIT_TARGET, NULL, true)) < 0)
+                        return r;
+
+                /* Note that by default we don't disable swap devices
+                 * on shutdown. i.e. there is no umount.target
+                 * conflicts here. */
+        }
+
+        return 0;
+}
+
 static int swap_verify(Swap *s) {
         bool b;
         char *e;
@@ -185,6 +203,10 @@ static int swap_load(Unit *u) {
 
                 if ((r = swap_add_target_links(s)) < 0)
                         return r;
+
+                if (s->meta.default_dependencies)
+                        if ((r = swap_add_default_dependencies(s)) < 0)
+                                return r;
         }
 
         return swap_verify(s);
-- 
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