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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2001-2002 Silicon Graphics, Inc. All Rights Reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of version 2 of the GNU General Public License as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it would be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
11 | * | |
12 | * Further, this software is distributed without any warranty that it is | |
13 | * free of the rightful claim of any third person regarding infringement | |
14 | * or the like. Any license provided herein, whether implied or | |
15 | * otherwise, applies only to this software file. Patent licenses, if | |
16 | * any, provided herein do not apply to combinations of this program with | |
17 | * other software, or any other product whatsoever. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License along | |
20 | * with this program; if not, write the Free Software Foundation, Inc., 59 | |
21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
22 | * | |
23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, | |
24 | * Mountain View, CA 94043, or: | |
25 | * | |
26 | * http://www.sgi.com | |
27 | * | |
28 | * For further information regarding this notice, see: | |
29 | * | |
30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ | |
31 | */ | |
32 | #ifndef __XFS_MAC_H__ | |
33 | #define __XFS_MAC_H__ | |
34 | ||
35 | /* | |
36 | * Mandatory Access Control | |
37 | * | |
38 | * Layout of a composite MAC label: | |
39 | * ml_list contains the list of categories (MSEN) followed by the list of | |
40 | * divisions (MINT). This is actually a header for the data structure which | |
41 | * will have an ml_list with more than one element. | |
42 | * | |
43 | * ------------------------------- | |
44 | * | ml_msen_type | ml_mint_type | | |
45 | * ------------------------------- | |
46 | * | ml_level | ml_grade | | |
47 | * ------------------------------- | |
48 | * | ml_catcount | | |
49 | * ------------------------------- | |
50 | * | ml_divcount | | |
51 | * ------------------------------- | |
52 | * | category 1 | | |
53 | * | . . . | | |
54 | * | category N | (where N = ml_catcount) | |
55 | * ------------------------------- | |
56 | * | division 1 | | |
57 | * | . . . | | |
58 | * | division M | (where M = ml_divcount) | |
59 | * ------------------------------- | |
60 | */ | |
61 | #define XFS_MAC_MAX_SETS 250 | |
62 | typedef struct xfs_mac_label { | |
63 | __uint8_t ml_msen_type; /* MSEN label type */ | |
64 | __uint8_t ml_mint_type; /* MINT label type */ | |
65 | __uint8_t ml_level; /* Hierarchical level */ | |
66 | __uint8_t ml_grade; /* Hierarchical grade */ | |
67 | __uint16_t ml_catcount; /* Category count */ | |
68 | __uint16_t ml_divcount; /* Division count */ | |
69 | /* Category set, then Division set */ | |
70 | __uint16_t ml_list[XFS_MAC_MAX_SETS]; | |
71 | } xfs_mac_label_t; | |
72 | ||
73 | /* MSEN label type names. Choose an upper case ASCII character. */ | |
74 | #define XFS_MSEN_ADMIN_LABEL 'A' /* Admin: low<admin != tcsec<high */ | |
75 | #define XFS_MSEN_EQUAL_LABEL 'E' /* Wildcard - always equal */ | |
76 | #define XFS_MSEN_HIGH_LABEL 'H' /* System High - always dominates */ | |
77 | #define XFS_MSEN_MLD_HIGH_LABEL 'I' /* System High, multi-level dir */ | |
78 | #define XFS_MSEN_LOW_LABEL 'L' /* System Low - always dominated */ | |
79 | #define XFS_MSEN_MLD_LABEL 'M' /* TCSEC label on a multi-level dir */ | |
80 | #define XFS_MSEN_MLD_LOW_LABEL 'N' /* System Low, multi-level dir */ | |
81 | #define XFS_MSEN_TCSEC_LABEL 'T' /* TCSEC label */ | |
82 | #define XFS_MSEN_UNKNOWN_LABEL 'U' /* unknown label */ | |
83 | ||
84 | /* MINT label type names. Choose a lower case ASCII character. */ | |
85 | #define XFS_MINT_BIBA_LABEL 'b' /* Dual of a TCSEC label */ | |
86 | #define XFS_MINT_EQUAL_LABEL 'e' /* Wildcard - always equal */ | |
87 | #define XFS_MINT_HIGH_LABEL 'h' /* High Grade - always dominates */ | |
88 | #define XFS_MINT_LOW_LABEL 'l' /* Low Grade - always dominated */ | |
89 | ||
90 | /* On-disk XFS extended attribute names */ | |
91 | #define SGI_MAC_FILE "SGI_MAC_FILE" | |
92 | #define SGI_MAC_FILE_SIZE (sizeof(SGI_MAC_FILE)-1) | |
93 | ||
94 | ||
95 | #ifdef __KERNEL__ | |
96 | ||
97 | #ifdef CONFIG_FS_POSIX_MAC | |
98 | ||
99 | /* NOT YET IMPLEMENTED */ | |
100 | ||
101 | #define MACEXEC 00100 | |
102 | #define MACWRITE 00200 | |
103 | #define MACREAD 00400 | |
104 | ||
105 | struct xfs_inode; | |
106 | extern int xfs_mac_iaccess(struct xfs_inode *, mode_t, cred_t *); | |
107 | ||
108 | #define _MAC_XFS_IACCESS(i,m,c) (xfs_mac_iaccess(i,m,c)) | |
109 | #define _MAC_VACCESS(v,c,m) (xfs_mac_vaccess(v,c,m)) | |
110 | #define _MAC_EXISTS xfs_mac_vhaslabel | |
111 | ||
112 | #else | |
113 | #define _MAC_XFS_IACCESS(i,m,c) (0) | |
114 | #define _MAC_VACCESS(v,c,m) (0) | |
115 | #define _MAC_EXISTS (NULL) | |
116 | #endif | |
117 | ||
118 | #endif /* __KERNEL__ */ | |
119 | ||
120 | #endif /* __XFS_MAC_H__ */ |