97 lines
3.1 KiB
C
97 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Multi-level security (MLS) policy operations.
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*
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* Author : Stephen Smalley, <stephen.smalley.work@gmail.com>
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*/
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/*
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* Updated: Trusted Computer Solutions, Inc. <dgoeddel@trustedcs.com>
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* Support for enhanced MLS infrastructure.
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* Copyright (C) 2004-2006 Trusted Computer Solutions, Inc.
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*
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* Updated: Hewlett-Packard <paul@paul-moore.com>
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* Added support to import/export the MLS label from NetLabel
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* Copyright (X) Hewlett-Packard Development Company, L.P., 2006
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*/
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#ifndef _SS_MLS_H_
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#define _SS_MLS_H_
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#include <linux/jhash.h>
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#include "context.h"
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#include "ebitmap.h"
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#include "policydb.h"
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int mls_compute_context_len(struct policydb *p, struct context *context);
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void mls_sid_to_context(struct policydb *p, struct context *context,
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char **scontext);
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int mls_context_isvalid(struct policydb *p, struct context *c);
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int mls_range_isvalid(struct policydb *p, struct mls_range *r);
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int mls_level_isvalid(struct policydb *p, struct mls_level *l);
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int mls_context_to_sid(struct policydb *p, char oldc, char *scontext,
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struct context *context, struct sidtab *s, u32 def_sid);
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int mls_from_string(struct policydb *p, char *str, struct context *context,
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gfp_t gfp_mask);
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int mls_range_set(struct context *context, struct mls_range *range);
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int mls_convert_context(struct policydb *oldp, struct policydb *newp,
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struct context *oldc, struct context *newc);
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int mls_compute_sid(struct policydb *p, struct context *scontext,
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struct context *tcontext, u16 tclass, u32 specified,
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struct context *newcontext, bool sock);
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int mls_setup_user_range(struct policydb *p, struct context *fromcon,
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struct user_datum *user, struct context *usercon);
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#ifdef CONFIG_NETLABEL
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void mls_export_netlbl_lvl(struct policydb *p, struct context *context,
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struct netlbl_lsm_secattr *secattr);
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void mls_import_netlbl_lvl(struct policydb *p, struct context *context,
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struct netlbl_lsm_secattr *secattr);
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int mls_export_netlbl_cat(struct policydb *p, struct context *context,
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struct netlbl_lsm_secattr *secattr);
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int mls_import_netlbl_cat(struct policydb *p, struct context *context,
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struct netlbl_lsm_secattr *secattr);
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#else
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static inline void mls_export_netlbl_lvl(struct policydb *p,
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struct context *context,
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struct netlbl_lsm_secattr *secattr)
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{
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return;
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}
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static inline void mls_import_netlbl_lvl(struct policydb *p,
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struct context *context,
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struct netlbl_lsm_secattr *secattr)
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{
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return;
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}
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static inline int mls_export_netlbl_cat(struct policydb *p,
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struct context *context,
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struct netlbl_lsm_secattr *secattr)
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{
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return -ENOMEM;
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}
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static inline int mls_import_netlbl_cat(struct policydb *p,
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struct context *context,
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struct netlbl_lsm_secattr *secattr)
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{
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return -ENOMEM;
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}
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#endif
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static inline u32 mls_range_hash(const struct mls_range *r, u32 hash)
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{
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hash = jhash_2words(r->level[0].sens, r->level[1].sens, hash);
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hash = ebitmap_hash(&r->level[0].cat, hash);
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hash = ebitmap_hash(&r->level[1].cat, hash);
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return hash;
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}
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#endif /* _SS_MLS_H */
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