You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
55 lines
2.2 KiB
55 lines
2.2 KiB
7 years ago
|
From 8d166597076d87aae9d5f98144103386c79d6446 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Jan Synacek <jsynacek@redhat.com>
|
||
|
|
Date: Fri, 31 Mar 2017 09:47:46 +0200
|
||
|
|
Subject: [PATCH] namespace: don't fail on masked mounts
|
||
|
|
|
||
|
|
Before this patch, a service file with ReadWriteDirectories=/file...
|
||
|
|
could fail if the file exists but is not a mountpoint, despite being
|
||
|
|
listed in /proc/self/mountinfo. It could happen with masked mounts.
|
||
|
|
|
||
|
|
(cherry picked from commit 98df8089bea1b2407c46495b6c2eb76dda46c658)
|
||
|
|
|
||
|
|
Resolves: #1433687
|
||
|
|
---
|
||
|
|
src/shared/util.c | 23 +++++++++++------------
|
||
|
|
1 file changed, 11 insertions(+), 12 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/src/shared/util.c b/src/shared/util.c
|
||
|
|
index 1070e32c4..3e13cc1fd 100644
|
||
|
|
--- a/src/shared/util.c
|
||
|
|
+++ b/src/shared/util.c
|
||
|
|
@@ -7332,22 +7332,21 @@ int bind_remount_recursive(const char *prefix, bool ro) {
|
||
|
|
if (r < 0)
|
||
|
|
return r;
|
||
|
|
|
||
|
|
- /* Try to reuse the original flag set, but
|
||
|
|
- * don't care for errors, in case of
|
||
|
|
- * obstructed mounts */
|
||
|
|
+ /* Deal with mount points that are obstructed by a
|
||
|
|
+ * later mount */
|
||
|
|
+ r = path_is_mount_point(x, 0);
|
||
|
|
+ if (r == -ENOENT || r == 0)
|
||
|
|
+ continue;
|
||
|
|
+ if (r < 0)
|
||
|
|
+ return r;
|
||
|
|
+
|
||
|
|
+ /* Try to reuse the original flag set */
|
||
|
|
orig_flags = 0;
|
||
|
|
(void) get_mount_flags(x, &orig_flags);
|
||
|
|
orig_flags &= ~MS_RDONLY;
|
||
|
|
|
||
|
|
- if (mount(NULL, x, NULL, orig_flags|MS_BIND|MS_REMOUNT|(ro ? MS_RDONLY : 0), NULL) < 0) {
|
||
|
|
-
|
||
|
|
- /* Deal with mount points that are
|
||
|
|
- * obstructed by a later mount */
|
||
|
|
-
|
||
|
|
- if (errno != ENOENT)
|
||
|
|
- return -errno;
|
||
|
|
- }
|
||
|
|
-
|
||
|
|
+ if (mount(NULL, x, NULL, orig_flags|MS_BIND|MS_REMOUNT|(ro ? MS_RDONLY : 0), NULL) < 0)
|
||
|
|
+ return -errno;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|