1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Multi-level security (MLS) policy operations.
4 *
5 * Author : Stephen Smalley, <sds@tycho.nsa.gov>
6 */
7 /*
8 * Updated: Trusted Computer Solutions, Inc. <dgoeddel@trustedcs.com>
9 *
10 * Support for enhanced MLS infrastructure.
11 *
12 * Copyright (C) 2004-2006 Trusted Computer Solutions, Inc.
13 */
14 /*
15 * Updated: Hewlett-Packard <paul@paul-moore.com>
16 *
17 * Added support to import/export the MLS label from NetLabel
18 *
19 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006
20 */
21
22 #ifndef _SS_MLS_H_
23 #define _SS_MLS_H_
24
25 #include "context.h"
26 #include "policydb.h"
27
28 int mls_compute_context_len(struct policydb *p, struct context *context);
29 void mls_sid_to_context(struct policydb *p, struct context *context,
30 char **scontext);
31 int mls_context_isvalid(struct policydb *p, struct context *c);
32 int mls_range_isvalid(struct policydb *p, struct mls_range *r);
33 int mls_level_isvalid(struct policydb *p, struct mls_level *l);
34
35 int mls_context_to_sid(struct policydb *p,
36 char oldc,
37 char *scontext,
38 struct context *context,
39 struct sidtab *s,
40 u32 def_sid);
41
42 int mls_from_string(struct policydb *p, char *str, struct context *context,
43 gfp_t gfp_mask);
44
45 int mls_range_set(struct context *context, struct mls_range *range);
46
47 int mls_convert_context(struct policydb *oldp,
48 struct policydb *newp,
49 struct context *oldc,
50 struct context *newc);
51
52 int mls_compute_sid(struct policydb *p,
53 struct context *scontext,
54 struct context *tcontext,
55 u16 tclass,
56 u32 specified,
57 struct context *newcontext,
58 bool sock);
59
60 int mls_setup_user_range(struct policydb *p,
61 struct context *fromcon, struct user_datum *user,
62 struct context *usercon);
63
64 #ifdef CONFIG_NETLABEL
65 void mls_export_netlbl_lvl(struct policydb *p,
66 struct context *context,
67 struct netlbl_lsm_secattr *secattr);
68 void mls_import_netlbl_lvl(struct policydb *p,
69 struct context *context,
70 struct netlbl_lsm_secattr *secattr);
71 int mls_export_netlbl_cat(struct policydb *p,
72 struct context *context,
73 struct netlbl_lsm_secattr *secattr);
74 int mls_import_netlbl_cat(struct policydb *p,
75 struct context *context,
76 struct netlbl_lsm_secattr *secattr);
77 #else
mls_export_netlbl_lvl(struct policydb * p,struct context * context,struct netlbl_lsm_secattr * secattr)78 static inline void mls_export_netlbl_lvl(struct policydb *p,
79 struct context *context,
80 struct netlbl_lsm_secattr *secattr)
81 {
82 return;
83 }
mls_import_netlbl_lvl(struct policydb * p,struct context * context,struct netlbl_lsm_secattr * secattr)84 static inline void mls_import_netlbl_lvl(struct policydb *p,
85 struct context *context,
86 struct netlbl_lsm_secattr *secattr)
87 {
88 return;
89 }
mls_export_netlbl_cat(struct policydb * p,struct context * context,struct netlbl_lsm_secattr * secattr)90 static inline int mls_export_netlbl_cat(struct policydb *p,
91 struct context *context,
92 struct netlbl_lsm_secattr *secattr)
93 {
94 return -ENOMEM;
95 }
mls_import_netlbl_cat(struct policydb * p,struct context * context,struct netlbl_lsm_secattr * secattr)96 static inline int mls_import_netlbl_cat(struct policydb *p,
97 struct context *context,
98 struct netlbl_lsm_secattr *secattr)
99 {
100 return -ENOMEM;
101 }
102 #endif
103
104 #endif /* _SS_MLS_H */
105
106
