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CRED: Wrap task credential accesses in the network device drivers

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Wrap access to task credentials so that they can be separated more easily from
the task_struct during the introduction of COW creds.

Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id().

Change some task->e?[ug]id to task_e?[ug]id().  In some places it makes more
sense to use RCU directly rather than a convenient wrapper; these will be
addressed by later patches.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: James Morris <jmorris@namei.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Cc: netdev@vger.kernel.org
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
David Howells 2008-11-14 10:38:43 +11:00 committed by James Morris
parent 0e164b685c
commit ee9785ada3
1 changed files with 2 additions and 2 deletions
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4
drivers/net/tun.c
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@ -712,9 +712,9 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
/* Check permissions */
if (((tun->owner != -1 &&
current->euid != tun->owner) ||
current_euid() != tun->owner) ||
(tun->group != -1 &&
current->egid != tun->group)) &&
current_egid() != tun->group)) &&
!capable(CAP_NET_ADMIN))
return -EPERM;
}