1 // SPDX-License-Identifier: GPL-2.0 1
2 /*
3 * security/tomoyo/load_policy.c
4 *
5 * Copyright (C) 2005-2011 NTT DATA CORPORATI
6 */
7
8 #include "common.h"
9
10 #ifndef CONFIG_SECURITY_TOMOYO_OMIT_USERSPACE_
11
12 /*
13 * Path to the policy loader. (default = CONFI
14 */
15 static const char *tomoyo_loader;
16
17 /**
18 * tomoyo_loader_setup - Set policy loader.
19 *
20 * @str: Program to use as a policy loader (e.
21 *
22 * Returns 0.
23 */
24 static int __init tomoyo_loader_setup(char *st
25 {
26 tomoyo_loader = str;
27 return 1;
28 }
29
30 __setup("TOMOYO_loader=", tomoyo_loader_setup)
31
32 /**
33 * tomoyo_policy_loader_exists - Check whether
34 *
35 * Returns true if /sbin/tomoyo-init exists, f
36 */
37 static bool tomoyo_policy_loader_exists(void)
38 {
39 struct path path;
40
41 if (!tomoyo_loader)
42 tomoyo_loader = CONFIG_SECURIT
43 if (kern_path(tomoyo_loader, LOOKUP_FO
44 pr_info("Not activating Mandat
45 tomoyo_loader);
46 return false;
47 }
48 path_put(&path);
49 return true;
50 }
51
52 /*
53 * Path to the trigger. (default = CONFIG_SECU
54 */
55 static const char *tomoyo_trigger;
56
57 /**
58 * tomoyo_trigger_setup - Set trigger for acti
59 *
60 * @str: Program to use as an activation trigg
61 *
62 * Returns 0.
63 */
64 static int __init tomoyo_trigger_setup(char *s
65 {
66 tomoyo_trigger = str;
67 return 1;
68 }
69
70 __setup("TOMOYO_trigger=", tomoyo_trigger_setu
71
72 /**
73 * tomoyo_load_policy - Run external policy lo
74 *
75 * @filename: The program about to start.
76 *
77 * This function checks whether @filename is /
78 * invoke /sbin/tomoyo-init and wait for the t
79 * and then continues invocation of /sbin/init
80 * /sbin/tomoyo-init reads policy files in /et
81 * writes to /sys/kernel/security/tomoyo/ inte
82 *
83 * Returns nothing.
84 */
85 void tomoyo_load_policy(const char *filename)
86 {
87 static bool done;
88 char *argv[2];
89 char *envp[3];
90
91 if (tomoyo_policy_loaded || done)
92 return;
93 if (!tomoyo_trigger)
94 tomoyo_trigger = CONFIG_SECURI
95 if (strcmp(filename, tomoyo_trigger))
96 return;
97 if (!tomoyo_policy_loader_exists())
98 return;
99 done = true;
100 pr_info("Calling %s to load policy. Pl
101 argv[0] = (char *) tomoyo_loader;
102 argv[1] = NULL;
103 envp[0] = "HOME=/";
104 envp[1] = "PATH=/sbin:/bin:/usr/sbin:/
105 envp[2] = NULL;
106 call_usermodehelper(argv[0], argv, env
107 tomoyo_check_profile();
108 }
109
110 #endif
111
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.