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- /*
- * Type definitions for the multi-level security (MLS) policy.
- *
- * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
- */
- /*
- * Updated: Trusted Computer Solutions, Inc. <dgoeddel@trustedcs.com>
- *
- * Support for enhanced MLS infrastructure.
- *
- * Copyright (C) 2004-2005 Trusted Computer Solutions, Inc.
- */
- #ifndef _SS_MLS_TYPES_H_
- #define _SS_MLS_TYPES_H_
- #include "security.h"
- #include "ebitmap.h"
- struct mls_level {
- u32 sens; /* sensitivity */
- struct ebitmap cat; /* category set */
- };
- struct mls_range {
- struct mls_level level[2]; /* low == level[0], high == level[1] */
- };
- static inline int mls_level_eq(struct mls_level *l1, struct mls_level *l2)
- {
- return ((l1->sens == l2->sens) &&
- ebitmap_cmp(&l1->cat, &l2->cat));
- }
- static inline int mls_level_dom(struct mls_level *l1, struct mls_level *l2)
- {
- return ((l1->sens >= l2->sens) &&
- ebitmap_contains(&l1->cat, &l2->cat, 0));
- }
- #define mls_level_incomp(l1, l2) \
- (!mls_level_dom((l1), (l2)) && !mls_level_dom((l2), (l1)))
- #define mls_level_between(l1, l2, l3) \
- (mls_level_dom((l1), (l2)) && mls_level_dom((l3), (l1)))
- #define mls_range_contains(r1, r2) \
- (mls_level_dom(&(r2).level[0], &(r1).level[0]) && \
- mls_level_dom(&(r1).level[1], &(r2).level[1]))
- #endif /* _SS_MLS_TYPES_H_ */
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