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 *context);
50
51 int mls_compute_sid(struct policydb *p,
52 struct context *scontext,
53 struct context *tcontext,
54 u16 tclass,
55 u32 specified,
56 struct context *newcontext,
57 bool sock);
58
59 int mls_setup_user_range(struct policydb *p,
60 struct context *fromcon, struct user_datum *user,
61 struct context *usercon);
62
63 #ifdef CONFIG_NETLABEL
64 void mls_export_netlbl_lvl(struct policydb *p,
65 struct context *context,
66 struct netlbl_lsm_secattr *secattr);
67 void mls_import_netlbl_lvl(struct policydb *p,
68 struct context *context,
69 struct netlbl_lsm_secattr *secattr);
70 int mls_export_netlbl_cat(struct policydb *p,
71 struct context *context,
72 struct netlbl_lsm_secattr *secattr);
73 int mls_import_netlbl_cat(struct policydb *p,
74 struct context *context,
75 struct netlbl_lsm_secattr *secattr);
76 #else
mls_export_netlbl_lvl(struct policydb * p,struct context * context,struct netlbl_lsm_secattr * secattr)77 static inline void mls_export_netlbl_lvl(struct policydb *p,
78 struct context *context,
79 struct netlbl_lsm_secattr *secattr)
80 {
81 return;
82 }
mls_import_netlbl_lvl(struct policydb * p,struct context * context,struct netlbl_lsm_secattr * secattr)83 static inline void mls_import_netlbl_lvl(struct policydb *p,
84 struct context *context,
85 struct netlbl_lsm_secattr *secattr)
86 {
87 return;
88 }
mls_export_netlbl_cat(struct policydb * p,struct context * context,struct netlbl_lsm_secattr * secattr)89 static inline int mls_export_netlbl_cat(struct policydb *p,
90 struct context *context,
91 struct netlbl_lsm_secattr *secattr)
92 {
93 return -ENOMEM;
94 }
mls_import_netlbl_cat(struct policydb * p,struct context * context,struct netlbl_lsm_secattr * secattr)95 static inline int mls_import_netlbl_cat(struct policydb *p,
96 struct context *context,
97 struct netlbl_lsm_secattr *secattr)
98 {
99 return -ENOMEM;
100 }
101 #endif
102
103 #endif /* _SS_MLS_H */
104
105
