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netfilter: xt_owner: Add supplementary groups option

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The XT_OWNER_SUPPL_GROUPS flag causes GIDs specified with XT_OWNER_GID
to be also checked in the supplementary groups of a process.

f_cred->group_info cannot be modified during its lifetime and f_cred
holds a reference to it so it's safe to use.

Signed-off-by: Lukasz Pawelczyk <l.pawelczyk@samsung.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Lukasz Pawelczyk
2019-05-10 13:46:22 +02:00
committed by Pablo Neira Ayuso
parent 508f744c0d
commit ea6cc2fd8a
2 changed files with 24 additions and 6 deletions
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7
include/uapi/linux/netfilter/xt_owner.h
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@@ -5,9 +5,10 @@
#include <linux/types.h>
enum {
XT_OWNER_UID = 1 << 0,
XT_OWNER_GID = 1 << 1,
XT_OWNER_SOCKET = 1 << 2,
XT_OWNER_UID = 1 << 0,
XT_OWNER_GID = 1 << 1,
XT_OWNER_SOCKET = 1 << 2,
XT_OWNER_SUPPL_GROUPS = 1 << 3,
};
struct xt_owner_match_info {