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-rw-r--r--security/tomoyo/number_group.c126
1 files changed, 0 insertions, 126 deletions
diff --git a/security/tomoyo/number_group.c b/security/tomoyo/number_group.c
deleted file mode 100644
index 5e75f5314bda..000000000000
--- a/security/tomoyo/number_group.c
+++ /dev/null
@@ -1,126 +0,0 @@
1/*
2 * security/tomoyo/number_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_number_group".
12 *
13 * @group_name: The name of number group.
14 *
15 * Returns pointer to "struct tomoyo_number_group" on success,
16 * NULL otherwise.
17 */
18struct tomoyo_group *tomoyo_get_number_group(const char *group_name)
19{
20 struct tomoyo_group *entry = NULL;
21 struct tomoyo_group *group = NULL;
22 const struct tomoyo_path_info *saved_group_name;
23 int error = -ENOMEM;
24 if (!tomoyo_correct_word(group_name))
25 return NULL;
26 saved_group_name = tomoyo_get_name(group_name);
27 if (!saved_group_name)
28 return NULL;
29 entry = kzalloc(sizeof(*entry), GFP_NOFS);
30 if (mutex_lock_interruptible(&tomoyo_policy_lock))
31 goto out;
32 list_for_each_entry_rcu(group, &tomoyo_group_list[TOMOYO_NUMBER_GROUP],
33 list) {
34 if (saved_group_name != group->group_name)
35 continue;
36 atomic_inc(&group->users);
37 error = 0;
38 break;
39 }
40 if (error && tomoyo_memory_ok(entry)) {
41 INIT_LIST_HEAD(&entry->member_list);
42 entry->group_name = saved_group_name;
43 saved_group_name = NULL;
44 atomic_set(&entry->users, 1);
45 list_add_tail_rcu(&entry->list,
46 &tomoyo_group_list[TOMOYO_NUMBER_GROUP]);
47 group = entry;
48 entry = NULL;
49 error = 0;
50 }
51 mutex_unlock(&tomoyo_policy_lock);
52 out:
53 tomoyo_put_name(saved_group_name);
54 kfree(entry);
55 return !error ? group : NULL;
56}
57
58static bool tomoyo_same_number_group(const struct tomoyo_acl_head *a,
59 const struct tomoyo_acl_head *b)
60{
61 return !memcmp(&container_of(a, struct tomoyo_number_group,
62 head)->number,
63 &container_of(b, struct tomoyo_number_group,
64 head)->number,
65 sizeof(container_of(a,
66 struct tomoyo_number_group,
67 head)->number));
68}
69
70/**
71 * tomoyo_write_number_group_policy - Write "struct tomoyo_number_group" list.
72 *
73 * @data: String to parse.
74 * @is_delete: True if it is a delete request.
75 *
76 * Returns 0 on success, nagative value otherwise.
77 */
78int tomoyo_write_number_group_policy(char *data, const bool is_delete)
79{
80 struct tomoyo_group *group;
81 struct tomoyo_number_group e = { };
82 int error;
83 char *w[2];
84 if (!tomoyo_tokenize(data, w, sizeof(w)))
85 return -EINVAL;
86 if (w[1][0] == '@' || !tomoyo_parse_number_union(w[1], &e.number) ||
87 e.number.values[0] > e.number.values[1])
88 return -EINVAL;
89 group = tomoyo_get_number_group(w[0]);
90 if (!group)
91 return -ENOMEM;
92 error = tomoyo_update_policy(&e.head, sizeof(e), is_delete,
93 &group->member_list,
94 tomoyo_same_number_group);
95 tomoyo_put_group(group);
96 return error;
97}
98
99/**
100 * tomoyo_number_matches_group - Check whether the given number matches members of the given number group.
101 *
102 * @min: Min number.
103 * @max: Max number.
104 * @group: Pointer to "struct tomoyo_number_group".
105 *
106 * Returns true if @min and @max partially overlaps @group, false otherwise.
107 *
108 * Caller holds tomoyo_read_lock().
109 */
110bool tomoyo_number_matches_group(const unsigned long min,
111 const unsigned long max,
112 const struct tomoyo_group *group)
113{
114 struct tomoyo_number_group *member;
115 bool matched = false;
116 list_for_each_entry_rcu(member, &group->member_list, head.list) {
117 if (member->head.is_deleted)
118 continue;
119 if (min > member->number.values[1] ||
120 max < member->number.values[0])
121 continue;
122 matched = true;
123 break;
124 }
125 return matched;
126}