1 /* SPDX-License-Identifier: GPL-2.0 */
3 * SafeSetID Linux Security Module
5 * Author: Micah Morton <mortonm@chromium.org>
7 * Copyright (C) 2018 The Chromium OS Authors.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2, as
11 * published by the Free Software Foundation.
17 #include <linux/types.h>
18 #include <linux/uidgid.h>
19 #include <linux/hashtable.h>
21 /* Flag indicating whether initialization completed */
22 extern int safesetid_initialized;
24 enum sid_policy_type {
25 SIDPOL_DEFAULT, /* source ID is unaffected by policy */
26 SIDPOL_CONSTRAINED, /* source ID is affected by policy */
27 SIDPOL_ALLOWED /* target ID explicitly allowed */
31 * Hash table entry to store safesetid policy signifying that 'src_uid'
32 * can setuid to 'dst_uid'.
35 struct hlist_node next;
40 #define SETID_HASH_BITS 8 /* 256 buckets in hash table */
42 struct setuid_ruleset {
43 DECLARE_HASHTABLE(rules, SETID_HASH_BITS);
48 enum sid_policy_type _setuid_policy_lookup(struct setuid_ruleset *policy,
49 kuid_t src, kuid_t dst);
51 extern struct setuid_ruleset __rcu *safesetid_setuid_rules;
53 #endif /* _SAFESETID_H */