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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 00:20:36 +0200 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 00:20:36 +0200 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /security/selinux/ss/avtab.h | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
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 @@ +/* + * An access vector table (avtab) is a hash table + * of access vectors and transition types indexed + * by a type pair and a class. An access vector + * table is used to represent the type enforcement + * tables. + * + * Author : Stephen Smalley, <sds@epoch.ncsc.mil> + */ + +/* Updated: Frank Mayer <mayerf@tresys.com> and Karl MacMillan <kmacmillan@tresys.com> + * + * Added conditional policy language extensions + * + * Copyright (C) 2003 Tresys Technology, LLC + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, version 2. + */ +#ifndef _SS_AVTAB_H_ +#define _SS_AVTAB_H_ + +struct avtab_key { + u32 source_type; /* source type */ + u32 target_type; /* target type */ + u32 target_class; /* target object class */ +}; + +struct avtab_datum { +#define AVTAB_ALLOWED 1 +#define AVTAB_AUDITALLOW 2 +#define AVTAB_AUDITDENY 4 +#define AVTAB_AV (AVTAB_ALLOWED | AVTAB_AUDITALLOW | AVTAB_AUDITDENY) +#define AVTAB_TRANSITION 16 +#define AVTAB_MEMBER 32 +#define AVTAB_CHANGE 64 +#define AVTAB_TYPE (AVTAB_TRANSITION | AVTAB_MEMBER | AVTAB_CHANGE) +#define AVTAB_ENABLED 0x80000000 /* reserved for used in cond_avtab */ + u32 specified; /* what fields are specified */ + u32 data[3]; /* access vectors or types */ +#define avtab_allowed(x) (x)->data[0] +#define avtab_auditdeny(x) (x)->data[1] +#define avtab_auditallow(x) (x)->data[2] +#define avtab_transition(x) (x)->data[0] +#define avtab_change(x) (x)->data[1] +#define avtab_member(x) (x)->data[2] +}; + +struct avtab_node { + struct avtab_key key; + struct avtab_datum datum; + struct avtab_node *next; +}; + +struct avtab { + struct avtab_node **htable; + u32 nel; /* number of elements */ +}; + +int avtab_init(struct avtab *); +struct avtab_datum *avtab_search(struct avtab *h, struct avtab_key *k, int specified); +void avtab_destroy(struct avtab *h); +void avtab_hash_eval(struct avtab *h, char *tag); + +int avtab_read_item(void *fp, struct avtab_datum *avdatum, struct avtab_key *avkey); +int avtab_read(struct avtab *a, void *fp, u32 config); + +struct avtab_node *avtab_insert_nonunique(struct avtab *h, struct avtab_key *key, + struct avtab_datum *datum); + +struct avtab_node *avtab_search_node(struct avtab *h, struct avtab_key *key, int specified); + +struct avtab_node *avtab_search_node_next(struct avtab_node *node, int specified); + +void avtab_cache_init(void); +void avtab_cache_destroy(void); + +#define AVTAB_HASH_BITS 15 +#define AVTAB_HASH_BUCKETS (1 << AVTAB_HASH_BITS) +#define AVTAB_HASH_MASK (AVTAB_HASH_BUCKETS-1) + +#define AVTAB_SIZE AVTAB_HASH_BUCKETS + +#endif /* _SS_AVTAB_H_ */ + |