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authorEric W. Biederman <ebiederm@xmission.com>2013-01-31 04:23:54 -0800
committerEric W. Biederman <ebiederm@xmission.com>2013-02-13 06:00:38 -0800
commitf74f70f8b10b435f5f20247e70d1d86b53a59685 (patch)
tree0ba5bd2d8e1f3cb795c66e134c7bc1d4572016aa /fs/afs
parent66fdb93f882d21612a5287cd1303c9b1391ebf5d (diff)
downloadlinux-f74f70f8b10b435f5f20247e70d1d86b53a59685.tar.gz
afs: Only allow mounting afs in the intial network namespace
rxrpc sockets only work in the initial network namespace so it isn't possible to support afs in any other network namespace. Cc: David Howells <dhowells@redhat.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'fs/afs')
-rw-r--r--fs/afs/super.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/afs/super.c b/fs/afs/super.c
index 43165009428..7c31ec39957 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -24,6 +24,8 @@
#include <linux/parser.h>
#include <linux/statfs.h>
#include <linux/sched.h>
+#include <linux/nsproxy.h>
+#include <net/net_namespace.h>
#include "internal.h"
#define AFS_FS_MAGIC 0x6B414653 /* 'kAFS' */
@@ -363,6 +365,10 @@ static struct dentry *afs_mount(struct file_system_type *fs_type,
memset(&params, 0, sizeof(params));
+ ret = -EINVAL;
+ if (current->nsproxy->net_ns != &init_net)
+ goto error;
+
/* parse the options and device name */
if (options) {
ret = afs_parse_options(&params, options, &dev_name);