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    Subject[PATCH review 15/85] afs: Only allow mounting afs in the intial network namespace
    From: "Eric W. Biederman" <ebiederm@xmission.com>

    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>
    ---
    fs/afs/super.c | 6 ++++++
    1 files changed, 6 insertions(+), 0 deletions(-)

    diff --git a/fs/afs/super.c b/fs/afs/super.c
    index 4316500..7c31ec3 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);
    --
    1.7.5.4


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