X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=net%2Fsysctl_net.c;h=5bc1a3d5740130a896e19f47b678f22cb5755853;hb=386b1f273850380a1887044673922843736c6d0a;hp=46a71c701e7c44f5aa5fcc69e8571382434e385b;hpb=755b20f49220683bc2469f4d956dee39101440aa;p=cascardo%2Flinux.git

diff --git a/net/sysctl_net.c b/net/sysctl_net.c
index 46a71c701e7c..5bc1a3d57401 100644
--- a/net/sysctl_net.c
+++ b/net/sysctl_net.c
@@ -42,26 +42,37 @@ static int net_ctl_permissions(struct ctl_table_header *head,
 			       struct ctl_table *table)
 {
 	struct net *net = container_of(head->set, struct net, sysctls);
-	kuid_t root_uid = make_kuid(net->user_ns, 0);
-	kgid_t root_gid = make_kgid(net->user_ns, 0);
 
 	/* Allow network administrator to have same access as root. */
-	if (ns_capable_noaudit(net->user_ns, CAP_NET_ADMIN) ||
-	    uid_eq(root_uid, current_euid())) {
+	if (ns_capable(net->user_ns, CAP_NET_ADMIN)) {
 		int mode = (table->mode >> 6) & 7;
 		return (mode << 6) | (mode << 3) | mode;
 	}
-	/* Allow netns root group to have the same access as the root group */
-	if (in_egroup_p(root_gid)) {
-		int mode = (table->mode >> 3) & 7;
-		return (mode << 3) | mode;
-	}
+
 	return table->mode;
 }
 
+static void net_ctl_set_ownership(struct ctl_table_header *head,
+				  struct ctl_table *table,
+				  kuid_t *uid, kgid_t *gid)
+{
+	struct net *net = container_of(head->set, struct net, sysctls);
+	kuid_t ns_root_uid;
+	kgid_t ns_root_gid;
+
+	ns_root_uid = make_kuid(net->user_ns, 0);
+	if (uid_valid(ns_root_uid))
+		*uid = ns_root_uid;
+
+	ns_root_gid = make_kgid(net->user_ns, 0);
+	if (gid_valid(ns_root_gid))
+		*gid = ns_root_gid;
+}
+
 static struct ctl_table_root net_sysctl_root = {
 	.lookup = net_ctl_header_lookup,
 	.permissions = net_ctl_permissions,
+	.set_ownership = net_ctl_set_ownership,
 };
 
 static int __net_init sysctl_net_init(struct net *net)