SELinux: Use %lu for inode->i_no when printing avc
[linux-2.6.git] / security / capability.c
1 /*
2  *  Capabilities Linux Security Module
3  *
4  *      This program is free software; you can redistribute it and/or modify
5  *      it under the terms of the GNU General Public License as published by
6  *      the Free Software Foundation; either version 2 of the License, or
7  *      (at your option) any later version.
8  *
9  */
10
11 #include <linux/module.h>
12 #include <linux/init.h>
13 #include <linux/kernel.h>
14 #include <linux/security.h>
15 #include <linux/file.h>
16 #include <linux/mm.h>
17 #include <linux/mman.h>
18 #include <linux/pagemap.h>
19 #include <linux/swap.h>
20 #include <linux/skbuff.h>
21 #include <linux/netlink.h>
22 #include <linux/ptrace.h>
23 #include <linux/moduleparam.h>
24
25 static struct security_operations capability_ops = {
26         .ptrace =                       cap_ptrace,
27         .capget =                       cap_capget,
28         .capset_check =                 cap_capset_check,
29         .capset_set =                   cap_capset_set,
30         .capable =                      cap_capable,
31         .settime =                      cap_settime,
32         .netlink_send =                 cap_netlink_send,
33         .netlink_recv =                 cap_netlink_recv,
34
35         .bprm_apply_creds =             cap_bprm_apply_creds,
36         .bprm_set_security =            cap_bprm_set_security,
37         .bprm_secureexec =              cap_bprm_secureexec,
38
39         .inode_setxattr =               cap_inode_setxattr,
40         .inode_removexattr =            cap_inode_removexattr,
41
42         .task_post_setuid =             cap_task_post_setuid,
43         .task_reparent_to_init =        cap_task_reparent_to_init,
44
45         .syslog =                       cap_syslog,
46
47         .vm_enough_memory =             cap_vm_enough_memory,
48 };
49
50 /* flag to keep track of how we were registered */
51 static int secondary;
52
53 static int capability_disable;
54 module_param_named(disable, capability_disable, int, 0);
55 MODULE_PARM_DESC(disable, "To disable capabilities module set disable = 1");
56
57 static int __init capability_init (void)
58 {
59         if (capability_disable) {
60                 printk(KERN_INFO "Capabilities disabled at initialization\n");
61                 return 0;
62         }
63         /* register ourselves with the security framework */
64         if (register_security (&capability_ops)) {
65                 /* try registering with primary module */
66                 if (mod_reg_security (KBUILD_MODNAME, &capability_ops)) {
67                         printk (KERN_INFO "Failure registering capabilities "
68                                 "with primary security module.\n");
69                         return -EINVAL;
70                 }
71                 secondary = 1;
72         }
73         printk (KERN_INFO "Capability LSM initialized%s\n",
74                 secondary ? " as secondary" : "");
75         return 0;
76 }
77
78 static void __exit capability_exit (void)
79 {
80         if (capability_disable)
81                 return;
82         /* remove ourselves from the security framework */
83         if (secondary) {
84                 if (mod_unreg_security (KBUILD_MODNAME, &capability_ops))
85                         printk (KERN_INFO "Failure unregistering capabilities "
86                                 "with primary module.\n");
87                 return;
88         }
89
90         if (unregister_security (&capability_ops)) {
91                 printk (KERN_INFO
92                         "Failure unregistering capabilities with the kernel\n");
93         }
94 }
95
96 security_initcall (capability_init);
97 module_exit (capability_exit);
98
99 MODULE_DESCRIPTION("Standard Linux Capabilities Security Module");
100 MODULE_LICENSE("GPL");