diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /security/selinux/ss/avtab.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'security/selinux/ss/avtab.h')
-rw-r--r-- | security/selinux/ss/avtab.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/security/selinux/ss/avtab.h b/security/selinux/ss/avtab.h new file mode 100644 index 000000000000..519d4f6dc655 --- /dev/null +++ b/security/selinux/ss/avtab.h | |||
@@ -0,0 +1,85 @@ | |||
1 | /* | ||
2 | * An access vector table (avtab) is a hash table | ||
3 | * of access vectors and transition types indexed | ||
4 | * by a type pair and a class. An access vector | ||
5 | * table is used to represent the type enforcement | ||
6 | * tables. | ||
7 | * | ||
8 | * Author : Stephen Smalley, <sds@epoch.ncsc.mil> | ||
9 | */ | ||
10 | |||
11 | /* Updated: Frank Mayer <mayerf@tresys.com> and Karl MacMillan <kmacmillan@tresys.com> | ||
12 | * | ||
13 | * Added conditional policy language extensions | ||
14 | * | ||
15 | * Copyright (C) 2003 Tresys Technology, LLC | ||
16 | * This program is free software; you can redistribute it and/or modify | ||
17 | * it under the terms of the GNU General Public License as published by | ||
18 | * the Free Software Foundation, version 2. | ||
19 | */ | ||
20 | #ifndef _SS_AVTAB_H_ | ||
21 | #define _SS_AVTAB_H_ | ||
22 | |||
23 | struct avtab_key { | ||
24 | u32 source_type; /* source type */ | ||
25 | u32 target_type; /* target type */ | ||
26 | u32 target_class; /* target object class */ | ||
27 | }; | ||
28 | |||
29 | struct avtab_datum { | ||
30 | #define AVTAB_ALLOWED 1 | ||
31 | #define AVTAB_AUDITALLOW 2 | ||
32 | #define AVTAB_AUDITDENY 4 | ||
33 | #define AVTAB_AV (AVTAB_ALLOWED | AVTAB_AUDITALLOW | AVTAB_AUDITDENY) | ||
34 | #define AVTAB_TRANSITION 16 | ||
35 | #define AVTAB_MEMBER 32 | ||
36 | #define AVTAB_CHANGE 64 | ||
37 | #define AVTAB_TYPE (AVTAB_TRANSITION | AVTAB_MEMBER | AVTAB_CHANGE) | ||
38 | #define AVTAB_ENABLED 0x80000000 /* reserved for used in cond_avtab */ | ||
39 | u32 specified; /* what fields are specified */ | ||
40 | u32 data[3]; /* access vectors or types */ | ||
41 | #define avtab_allowed(x) (x)->data[0] | ||
42 | #define avtab_auditdeny(x) (x)->data[1] | ||
43 | #define avtab_auditallow(x) (x)->data[2] | ||
44 | #define avtab_transition(x) (x)->data[0] | ||
45 | #define avtab_change(x) (x)->data[1] | ||
46 | #define avtab_member(x) (x)->data[2] | ||
47 | }; | ||
48 | |||
49 | struct avtab_node { | ||
50 | struct avtab_key key; | ||
51 | struct avtab_datum datum; | ||
52 | struct avtab_node *next; | ||
53 | }; | ||
54 | |||
55 | struct avtab { | ||
56 | struct avtab_node **htable; | ||
57 | u32 nel; /* number of elements */ | ||
58 | }; | ||
59 | |||
60 | int avtab_init(struct avtab *); | ||
61 | struct avtab_datum *avtab_search(struct avtab *h, struct avtab_key *k, int specified); | ||
62 | void avtab_destroy(struct avtab *h); | ||
63 | void avtab_hash_eval(struct avtab *h, char *tag); | ||
64 | |||
65 | int avtab_read_item(void *fp, struct avtab_datum *avdatum, struct avtab_key *avkey); | ||
66 | int avtab_read(struct avtab *a, void *fp, u32 config); | ||
67 | |||
68 | struct avtab_node *avtab_insert_nonunique(struct avtab *h, struct avtab_key *key, | ||
69 | struct avtab_datum *datum); | ||
70 | |||
71 | struct avtab_node *avtab_search_node(struct avtab *h, struct avtab_key *key, int specified); | ||
72 | |||
73 | struct avtab_node *avtab_search_node_next(struct avtab_node *node, int specified); | ||
74 | |||
75 | void avtab_cache_init(void); | ||
76 | void avtab_cache_destroy(void); | ||
77 | |||
78 | #define AVTAB_HASH_BITS 15 | ||
79 | #define AVTAB_HASH_BUCKETS (1 << AVTAB_HASH_BITS) | ||
80 | #define AVTAB_HASH_MASK (AVTAB_HASH_BUCKETS-1) | ||
81 | |||
82 | #define AVTAB_SIZE AVTAB_HASH_BUCKETS | ||
83 | |||
84 | #endif /* _SS_AVTAB_H_ */ | ||
85 | |||