Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6

Conflicts:
	arch/sparc64/kernel/idprom.c

1 files changed, 13 insertions, 5 deletions

diff --git a/ipc/util.c b/ipc/util.c
index 361fd1c96fcf..5a1808c774a2 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -258,6 +258,8 @@ int ipc_get_maxid(struct ipc_ids *ids)
  
 int ipc_addid(struct ipc_ids* ids, struct kern_ipc_perm* new, int size)
 {
+	uid_t euid;
+	gid_t egid;
 	int id, err;
 
 	if (size > IPCMNI)
@@ -280,8 +282,9 @@ int ipc_addid(struct ipc_ids* ids, struct kern_ipc_perm* new, int size)
 
 	ids->in_use++;
 
-	new->cuid = new->uid = current->euid;
-	new->gid = new->cgid = current->egid;
+	current_euid_egid(&euid, &egid);
+	new->cuid = new->uid = euid;
+	new->gid = new->cgid = egid;
 
 	new->seq = ids->seq++;
 	if(ids->seq > ids->seq_max)
@@ -620,13 +623,15 @@ void ipc_rcu_putref(void *ptr)
  
 int ipcperms (struct kern_ipc_perm *ipcp, short flag)
 {	/* flag will most probably be 0 or S_...UGO from <linux/stat.h> */
+	uid_t euid = current_euid();
 	int requested_mode, granted_mode, err;
 
 	if (unlikely((err = audit_ipc_obj(ipcp))))
 		return err;
 	requested_mode = (flag >> 6) | (flag >> 3) | flag;
 	granted_mode = ipcp->mode;
-	if (current->euid == ipcp->cuid || current->euid == ipcp->uid)
+	if (euid == ipcp->cuid ||
+	    euid == ipcp->uid)
 		granted_mode >>= 6;
 	else if (in_group_p(ipcp->cgid) || in_group_p(ipcp->gid))
 		granted_mode >>= 3;
@@ -788,6 +793,7 @@ struct kern_ipc_perm *ipcctl_pre_down(struct ipc_ids *ids, int id, int cmd,
 				      struct ipc64_perm *perm, int extra_perm)
 {
 	struct kern_ipc_perm *ipcp;
+	uid_t euid;
 	int err;
 
 	down_write(&ids->rw_mutex);
@@ -807,8 +813,10 @@ struct kern_ipc_perm *ipcctl_pre_down(struct ipc_ids *ids, int id, int cmd,
 		if (err)
 			goto out_unlock;
 	}
-	if (current->euid == ipcp->cuid ||
-	    current->euid == ipcp->uid || capable(CAP_SYS_ADMIN))
+
+	euid = current_euid();
+	if (euid == ipcp->cuid ||
+	    euid == ipcp->uid  || capable(CAP_SYS_ADMIN))
 		return ipcp;
 
 	err = -EPERM;