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| author | David Howells <dhowells@redhat.com> | 2008-11-14 10:39:18 +1100 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2008-11-14 10:39:18 +1100 |
| commit | 86a264abe542cfececb4df129bc45a0338d8cdb9 (patch) | |
| tree | 30152f04ba847f311028d5ca697f864c16c7ebb3 /drivers/net/tun.c | |
| parent | f1752eec6145c97163dbce62d17cf5d928e28a27 (diff) | |
| download | linux-3.10-86a264abe542cfececb4df129bc45a0338d8cdb9.tar.gz linux-3.10-86a264abe542cfececb4df129bc45a0338d8cdb9.tar.bz2 linux-3.10-86a264abe542cfececb4df129bc45a0338d8cdb9.zip | |
CRED: Wrap current->cred and a few other accessors
Wrap current->cred and a few other accessors to hide their actual
implementation.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <jmorris@namei.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'drivers/net/tun.c')
| -rw-r--r-- | drivers/net/tun.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index b14e2025e22..55dc70c6b4d 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -702,6 +702,7 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr) struct tun_net *tn; struct tun_struct *tun; struct net_device *dev; + const struct cred *cred = current_cred(); int err; tn = net_generic(net, tun_net_id); @@ -712,11 +713,12 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr) /* Check permissions */ if (((tun->owner != -1 && - current_euid() != tun->owner) || + cred->euid != tun->owner) || (tun->group != -1 && - current_egid() != tun->group)) && - !capable(CAP_NET_ADMIN)) + cred->egid != tun->group)) && + !capable(CAP_NET_ADMIN)) { return -EPERM; + } } else if (__dev_get_by_name(net, ifr->ifr_name)) return -EINVAL; |