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1 /* 1
2 * SELinux services exported to the rest of th
3 *
4 * Author: James Morris <jmorris@redhat.com>
5 *
6 * Copyright (C) 2005 Red Hat, Inc., James Mor
7 * Copyright (C) 2006 Trusted Computer Solutio
8 * Copyright (C) 2006 IBM Corporation, Timothy
9 *
10 * This program is free software; you can redi
11 * it under the terms of the GNU General Publi
12 * as published by the Free Software Foundatio
13 */
14 #include <linux/types.h>
15 #include <linux/kernel.h>
16 #include <linux/module.h>
17 #include <linux/selinux.h>
18 #include <linux/fs.h>
19 #include <linux/ipc.h>
20 #include <asm/atomic.h>
21
22 #include "security.h"
23 #include "objsec.h"
24
25 /* SECMARK reference count */
26 extern atomic_t selinux_secmark_refcount;
27
28 int selinux_sid_to_string(u32 sid, char **ctx,
29 {
30 if (selinux_enabled)
31 return security_sid_to_context
32 else {
33 *ctx = NULL;
34 *ctxlen = 0;
35 }
36
37 return 0;
38 }
39
40 void selinux_get_inode_sid(const struct inode
41 {
42 if (selinux_enabled) {
43 struct inode_security_struct *
44 *sid = isec->sid;
45 return;
46 }
47 *sid = 0;
48 }
49
50 void selinux_get_ipc_sid(const struct kern_ipc
51 {
52 if (selinux_enabled) {
53 struct ipc_security_struct *is
54 *sid = isec->sid;
55 return;
56 }
57 *sid = 0;
58 }
59
60 void selinux_get_task_sid(struct task_struct *
61 {
62 if (selinux_enabled) {
63 struct task_security_struct *t
64 *sid = tsec->sid;
65 return;
66 }
67 *sid = 0;
68 }
69
70 int selinux_string_to_sid(char *str, u32 *sid)
71 {
72 if (selinux_enabled)
73 return security_context_to_sid
74 else {
75 *sid = 0;
76 return 0;
77 }
78 }
79 EXPORT_SYMBOL_GPL(selinux_string_to_sid);
80
81 int selinux_secmark_relabel_packet_permission(
82 {
83 if (selinux_enabled) {
84 struct task_security_struct *t
85
86 return avc_has_perm(tsec->sid,
87 PACKET__RE
88 }
89 return 0;
90 }
91 EXPORT_SYMBOL_GPL(selinux_secmark_relabel_pack
92
93 void selinux_secmark_refcount_inc(void)
94 {
95 atomic_inc(&selinux_secmark_refcount);
96 }
97 EXPORT_SYMBOL_GPL(selinux_secmark_refcount_inc
98
99 void selinux_secmark_refcount_dec(void)
100 {
101 atomic_dec(&selinux_secmark_refcount);
102 }
103 EXPORT_SYMBOL_GPL(selinux_secmark_refcount_dec
104
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