autofs-5.0.8 - check for bind onto self in mount_bind.c
From: Ian Kent <raven@themaw.net>
Check for an obviously impossible request to bind or symlink to the
same patch for source and target.
---
CHANGELOG | 1 +
modules/mount_bind.c | 6 ++++++
2 files changed, 7 insertions(+)
diff --git a/CHANGELOG b/CHANGELOG
index de72fa1..3bd9c04 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -23,6 +23,7 @@
- fix symlink fail message in mount_bind.c.
- fix cache readlock not taken on lookup.
- pass map_source as function paramter where possible.
+- check for bind onto self in mount_bind.c.
17/10/2013 autofs-5.0.8
=======================
diff --git a/modules/mount_bind.c b/modules/mount_bind.c
index 8cb1605..f14adb7 100644
--- a/modules/mount_bind.c
+++ b/modules/mount_bind.c
@@ -135,6 +135,12 @@ int mount_mount(struct autofs_point *ap, const char *root, const char *name, int
if (options == NULL || *options == '\0')
options = "defaults";
+ if (!strcmp(what, fullpath)) {
+ debug(ap->logopt, MODPREFIX
+ "cannot mount or symlink %s to itself", fullpath);
+ return 1;
+ }
+
if (!symlnk && bind_works) {
int status, existed = 1;