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authorAlban Crequy <alban@kinvolk.io>2016-07-25 15:39:46 +0200
committerLennart Poettering <lennart@poettering.net>2016-07-25 15:39:46 +0200
commit98df8089bea1b2407c46495b6c2eb76dda46c658 (patch)
tree65e8e718f013127c0859ad6515e40ca529e1b679 /src/basic/mount-util.c
parent3324079741297004a285decc77ac89b776fac1ee (diff)
namespace: don't fail on masked mounts (#3794)
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. Fixes https://github.com/systemd/systemd/issues/3793
Diffstat (limited to 'src/basic/mount-util.c')
-rw-r--r--src/basic/mount-util.c22
1 files changed, 11 insertions, 11 deletions
diff --git a/src/basic/mount-util.c b/src/basic/mount-util.c
index b91f0f9e0e..28dc778969 100644
--- a/src/basic/mount-util.c
+++ b/src/basic/mount-util.c
@@ -448,21 +448,21 @@ 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;
}
}