diff options
Diffstat (limited to 'security/tomoyo/path_group.c')
-rw-r--r-- | security/tomoyo/path_group.c | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/security/tomoyo/path_group.c b/security/tomoyo/path_group.c deleted file mode 100644 index 2f9f9240bf5a..000000000000 --- a/security/tomoyo/path_group.c +++ /dev/null | |||
@@ -1,122 +0,0 @@ | |||
1 | /* | ||
2 | * security/tomoyo/path_group.c | ||
3 | * | ||
4 | * Copyright (C) 2005-2009 NTT DATA CORPORATION | ||
5 | */ | ||
6 | |||
7 | #include <linux/slab.h> | ||
8 | #include "common.h" | ||
9 | |||
10 | /** | ||
11 | * tomoyo_get_group - Allocate memory for "struct tomoyo_path_group". | ||
12 | * | ||
13 | * @group_name: The name of pathname group. | ||
14 | * | ||
15 | * Returns pointer to "struct tomoyo_path_group" on success, NULL otherwise. | ||
16 | */ | ||
17 | struct tomoyo_group *tomoyo_get_path_group(const char *group_name) | ||
18 | { | ||
19 | struct tomoyo_group *entry = NULL; | ||
20 | struct tomoyo_group *group = NULL; | ||
21 | const struct tomoyo_path_info *saved_group_name; | ||
22 | int error = -ENOMEM; | ||
23 | if (!tomoyo_correct_word(group_name)) | ||
24 | return NULL; | ||
25 | saved_group_name = tomoyo_get_name(group_name); | ||
26 | if (!saved_group_name) | ||
27 | return NULL; | ||
28 | entry = kzalloc(sizeof(*entry), GFP_NOFS); | ||
29 | if (mutex_lock_interruptible(&tomoyo_policy_lock)) | ||
30 | goto out; | ||
31 | list_for_each_entry_rcu(group, &tomoyo_group_list[TOMOYO_PATH_GROUP], | ||
32 | list) { | ||
33 | if (saved_group_name != group->group_name) | ||
34 | continue; | ||
35 | atomic_inc(&group->users); | ||
36 | error = 0; | ||
37 | break; | ||
38 | } | ||
39 | if (error && tomoyo_memory_ok(entry)) { | ||
40 | INIT_LIST_HEAD(&entry->member_list); | ||
41 | entry->group_name = saved_group_name; | ||
42 | saved_group_name = NULL; | ||
43 | atomic_set(&entry->users, 1); | ||
44 | list_add_tail_rcu(&entry->list, | ||
45 | &tomoyo_group_list[TOMOYO_PATH_GROUP]); | ||
46 | group = entry; | ||
47 | entry = NULL; | ||
48 | error = 0; | ||
49 | } | ||
50 | mutex_unlock(&tomoyo_policy_lock); | ||
51 | out: | ||
52 | tomoyo_put_name(saved_group_name); | ||
53 | kfree(entry); | ||
54 | return !error ? group : NULL; | ||
55 | } | ||
56 | |||
57 | static bool tomoyo_same_path_group(const struct tomoyo_acl_head *a, | ||
58 | const struct tomoyo_acl_head *b) | ||
59 | { | ||
60 | return container_of(a, struct tomoyo_path_group, head) | ||
61 | ->member_name == | ||
62 | container_of(b, struct tomoyo_path_group, head) | ||
63 | ->member_name; | ||
64 | } | ||
65 | |||
66 | /** | ||
67 | * tomoyo_write_path_group_policy - Write "struct tomoyo_path_group" list. | ||
68 | * | ||
69 | * @data: String to parse. | ||
70 | * @is_delete: True if it is a delete request. | ||
71 | * | ||
72 | * Returns 0 on success, nagative value otherwise. | ||
73 | */ | ||
74 | int tomoyo_write_path_group_policy(char *data, const bool is_delete) | ||
75 | { | ||
76 | struct tomoyo_group *group; | ||
77 | struct tomoyo_path_group e = { }; | ||
78 | int error = is_delete ? -ENOENT : -ENOMEM; | ||
79 | char *w[2]; | ||
80 | if (!tomoyo_tokenize(data, w, sizeof(w)) || !w[1][0]) | ||
81 | return -EINVAL; | ||
82 | group = tomoyo_get_path_group(w[0]); | ||
83 | if (!group) | ||
84 | return -ENOMEM; | ||
85 | e.member_name = tomoyo_get_name(w[1]); | ||
86 | if (!e.member_name) | ||
87 | goto out; | ||
88 | error = tomoyo_update_policy(&e.head, sizeof(e), is_delete, | ||
89 | &group->member_list, | ||
90 | tomoyo_same_path_group); | ||
91 | out: | ||
92 | tomoyo_put_name(e.member_name); | ||
93 | tomoyo_put_group(group); | ||
94 | return error; | ||
95 | } | ||
96 | |||
97 | /** | ||
98 | * tomoyo_path_matches_group - Check whether the given pathname matches members of the given pathname group. | ||
99 | * | ||
100 | * @pathname: The name of pathname. | ||
101 | * @group: Pointer to "struct tomoyo_path_group". | ||
102 | * | ||
103 | * Returns true if @pathname matches pathnames in @group, false otherwise. | ||
104 | * | ||
105 | * Caller holds tomoyo_read_lock(). | ||
106 | */ | ||
107 | bool tomoyo_path_matches_group(const struct tomoyo_path_info *pathname, | ||
108 | const struct tomoyo_group *group) | ||
109 | { | ||
110 | struct tomoyo_path_group *member; | ||
111 | bool matched = false; | ||
112 | list_for_each_entry_rcu(member, &group->member_list, head.list) { | ||
113 | if (member->head.is_deleted) | ||
114 | continue; | ||
115 | if (!tomoyo_path_matches_pattern(pathname, | ||
116 | member->member_name)) | ||
117 | continue; | ||
118 | matched = true; | ||
119 | break; | ||
120 | } | ||
121 | return matched; | ||
122 | } | ||