| Giulio Cervera | 549ceed | 2011-05-12 15:10:21 +0200 | [diff] [blame] | 1 | /* |
| 2 | * fs/cifs/cifsacl.h |
| 3 | * |
| 4 | * Copyright (c) International Business Machines Corp., 2007 |
| 5 | * Author(s): Steve French (sfrench@us.ibm.com) |
| 6 | * |
| 7 | * This library is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU Lesser General Public License as published |
| 9 | * by the Free Software Foundation; either version 2.1 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This library is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 15 | * the GNU Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public License |
| 18 | * along with this library; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
| 21 | |
| 22 | #ifndef _CIFSACL_H |
| 23 | #define _CIFSACL_H |
| 24 | |
| 25 | |
| 26 | #define NUM_AUTHS 6 /* number of authority fields */ |
| 27 | #define NUM_SUBAUTHS 5 /* number of sub authority fields */ |
| 28 | #define NUM_WK_SIDS 7 /* number of well known sids */ |
| 29 | #define SIDNAMELENGTH 20 /* long enough for the ones we care about */ |
| 30 | #define DEFSECDESCLEN 192 /* sec desc len contaiting a dacl with three aces */ |
| 31 | |
| 32 | #define READ_BIT 0x4 |
| 33 | #define WRITE_BIT 0x2 |
| 34 | #define EXEC_BIT 0x1 |
| 35 | |
| 36 | #define UBITSHIFT 6 |
| 37 | #define GBITSHIFT 3 |
| 38 | |
| 39 | #define ACCESS_ALLOWED 0 |
| 40 | #define ACCESS_DENIED 1 |
| 41 | |
| 42 | struct cifs_ntsd { |
| 43 | __le16 revision; /* revision level */ |
| 44 | __le16 type; |
| 45 | __le32 osidoffset; |
| 46 | __le32 gsidoffset; |
| 47 | __le32 sacloffset; |
| 48 | __le32 dacloffset; |
| 49 | } __attribute__((packed)); |
| 50 | |
| 51 | struct cifs_sid { |
| 52 | __u8 revision; /* revision level */ |
| 53 | __u8 num_subauth; |
| 54 | __u8 authority[6]; |
| 55 | __le32 sub_auth[5]; /* sub_auth[num_subauth] */ |
| 56 | } __attribute__((packed)); |
| 57 | |
| 58 | struct cifs_acl { |
| 59 | __le16 revision; /* revision level */ |
| 60 | __le16 size; |
| 61 | __le32 num_aces; |
| 62 | } __attribute__((packed)); |
| 63 | |
| 64 | struct cifs_ace { |
| 65 | __u8 type; |
| 66 | __u8 flags; |
| 67 | __le16 size; |
| 68 | __le32 access_req; |
| 69 | struct cifs_sid sid; /* ie UUID of user or group who gets these perms */ |
| 70 | } __attribute__((packed)); |
| 71 | |
| 72 | struct cifs_wksid { |
| 73 | struct cifs_sid cifssid; |
| 74 | char sidname[SIDNAMELENGTH]; |
| 75 | } __attribute__((packed)); |
| 76 | |
| 77 | #ifdef CONFIG_CIFS_EXPERIMENTAL |
| 78 | |
| 79 | extern int match_sid(struct cifs_sid *); |
| 80 | extern int compare_sids(const struct cifs_sid *, const struct cifs_sid *); |
| 81 | |
| 82 | #endif /* CONFIG_CIFS_EXPERIMENTAL */ |
| 83 | |
| 84 | #endif /* _CIFSACL_H */ |