commit 1ab123486c698860966193d254db54f8a4d428b4
Author: Jan Engelhardt <jengelh@xxxxxxxxxxxxxxx>
Date: Sun Jan 20 13:15:08 2008 +0100
[NETFILTER]: xt_owner: allow matching UID/GID ranges
Signed-off-by: Jan Engelhardt <jengelh@xxxxxxxxxxxxxxx>
diff --git a/include/linux/netfilter/xt_owner.h b/include/linux/netfilter/xt_owner.h
index eacd34e..c84e52c 100644
--- a/include/linux/netfilter/xt_owner.h
+++ b/include/linux/netfilter/xt_owner.h
@@ -8,8 +8,8 @@ enum {
};
struct xt_owner_match_info {
- u_int32_t uid;
- u_int32_t gid;
+ u_int32_t uid_min, uid_max;
+ u_int32_t gid_min, gid_max;
u_int8_t match, invert;
};
diff --git a/net/netfilter/xt_owner.c b/net/netfilter/xt_owner.c
index d382f9c..9059c16 100644
--- a/net/netfilter/xt_owner.c
+++ b/net/netfilter/xt_owner.c
@@ -4,8 +4,8 @@
*
* (C) 2000 Marc Boucher <marc@xxxxxxx>
*
- * Copyright © CC Computer Consultants GmbH, 2007
- * Contact: <jengelh@xxxxxxxxxxxxxxx>
+ * Copyright © CC Computer Consultants GmbH, 2007 - 2008
+ * <jengelh@xxxxxxxxxxxxxxx>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -102,13 +102,15 @@ owner_mt(const struct sk_buff *skb, const struct net_device *in,
(XT_OWNER_UID | XT_OWNER_GID)) == 0;
if (info->match & XT_OWNER_UID)
- if ((filp->f_uid != info->uid) ^
- !!(info->invert & XT_OWNER_UID))
+ if ((filp->f_uid >= info->uid_min &&
+ filp->f_uid <= info->uid_max) ^
+ !(info->invert & XT_OWNER_UID))
return false;
if (info->match & XT_OWNER_GID)
- if ((filp->f_gid != info->gid) ^
- !!(info->invert & XT_OWNER_GID))
+ if ((filp->f_gid >= info->gid_min &&
+ filp->f_gid <= info->gid_max) ^
+ !(info->invert & XT_OWNER_GID))
return false;
return true;
-
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