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afs: Only allow mounting afs in the intial network namespace

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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>
This commit is contained in:
Eric W. Biederman 2013-01-31 04:23:54 -08:00
parent 66fdb93f88
commit f74f70f8b1
1 changed files with 6 additions and 0 deletions
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6
fs/afs/super.c
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@ -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);