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| author | Eric W. Biederman <ebiederm@xmission.com> | 2013-01-31 11:09:50 +0100 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2013-02-12 12:19:23 +0100 |
| commit | eea553c21fbfa486978c82525ee8256239d4f921 (patch) | |
| tree | 45b6b0b51fd59806aa1e8836a1f563918b02eab4 /net/ceph/ceph_common.c | |
| parent | userns: Allow the unprivileged users to mount mqueue fs (diff) | |
| download | linux-eea553c21fbfa486978c82525ee8256239d4f921.tar.xz linux-eea553c21fbfa486978c82525ee8256239d4f921.zip | |
ceph: Only allow mounts in the initial network namespace
Today ceph opens tcp sockets from a delayed work callback. Delayed
work happens from kernel threads which are always in the initial
network namespace. Therefore fail early if someone attempts
to mount a ceph filesystem from something other than the initial
network namespace.
Cc: Sage Weil <sage@inktank.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'net/ceph/ceph_common.c')
| -rw-r--r-- | net/ceph/ceph_common.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c index ee71ea26777a..1deb29af82fd 100644 --- a/net/ceph/ceph_common.c +++ b/net/ceph/ceph_common.c @@ -15,6 +15,8 @@ #include <linux/slab.h> #include <linux/statfs.h> #include <linux/string.h> +#include <linux/nsproxy.h> +#include <net/net_namespace.h> #include <linux/ceph/ceph_features.h> @@ -292,6 +294,9 @@ ceph_parse_options(char *options, const char *dev_name, int err = -ENOMEM; substring_t argstr[MAX_OPT_ARGS]; + if (current->nsproxy->net_ns != &init_net) + return ERR_PTR(-EINVAL); + opt = kzalloc(sizeof(*opt), GFP_KERNEL); if (!opt) return ERR_PTR(-ENOMEM); |