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authorGuido Guenther <agx@sigxcpu.org>2007-07-02 22:50:25 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-07-10 22:16:42 -0700
commit8c644623fe7e41f59fe97cdf666cba3cb7ced7d8 (patch)
tree42ed72e59e73b6ec840aa4ea97a34630f3544093 /include
parent0ba48053831d5b89ee2afaefaae1c06eae80cb05 (diff)
[NET]: Allow group ownership of TUN/TAP devices.
Introduce a new syscall TUNSETGROUP for group ownership setting of tap devices. The user now is allowed to send packages if either his euid or his egid matches the one specified via tunctl (via -u or -g respecitvely). If both, gid and uid, are set via tunctl, both have to match. Signed-off-by: Guido Guenther <agx@sigxcpu.org> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/if_tun.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/if_tun.h b/include/linux/if_tun.h
index 88aef7b86ef..42eb6945b93 100644
--- a/include/linux/if_tun.h
+++ b/include/linux/if_tun.h
@@ -36,6 +36,7 @@ struct tun_struct {
unsigned long flags;
int attached;
uid_t owner;
+ gid_t group;
wait_queue_head_t read_wait;
struct sk_buff_head readq;
@@ -78,6 +79,7 @@ struct tun_struct {
#define TUNSETPERSIST _IOW('T', 203, int)
#define TUNSETOWNER _IOW('T', 204, int)
#define TUNSETLINK _IOW('T', 205, int)
+#define TUNSETGROUP _IOW('T', 206, int)
/* TUNSETIFF ifr flags */
#define IFF_TUN 0x0001