fs/cifs/cifsacl.h

   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
  31 #define READ_BIT        0x4
  32 #define WRITE_BIT       0x2
  33 #define EXEC_BIT        0x1
  34
  35 #define UBITSHIFT       6
  36 #define GBITSHIFT       3
  37
  38 struct cifs_ntsd {
  39         __le16 revision; /* revision level */
  40         __le16 type;
  41         __le32 osidoffset;
  42         __le32 gsidoffset;
  43         __le32 sacloffset;
  44         __le32 dacloffset;
  45 } __attribute__((packed));
  46
  47 struct cifs_sid {
  48         __u8 revision; /* revision level */
  49         __u8 num_subauth;
  50         __u8 authority[6];
  51         __le32 sub_auth[5]; /* sub_auth[num_subauth] */ /* BB FIXME endianness BB */
  52 } __attribute__((packed));
  53
  54 struct cifs_acl {
  55         __le16 revision; /* revision level */
  56         __le16 size;
  57         __le32 num_aces;
  58 } __attribute__((packed));
  59
  60 struct cifs_ntace { /* first part of ACE which contains perms */
  61         __u8 type;
  62         __u8 flags;
  63         __le16 size;
  64         __le32 access_req;
  65 } __attribute__((packed));
  66
  67 struct cifs_ace { /* last part of ACE which includes user info */
  68         __u8 revision; /* revision level */
  69         __u8 num_subauth;
  70         __u8 authority[6];
  71         __le32 sub_auth[5];
  72 } __attribute__((packed));
  73
  74 struct cifs_wksid {
  75         struct cifs_sid cifssid;
  76         char sidname[SIDNAMELENGTH];
  77 } __attribute__((packed));
  78
  79 #ifdef CONFIG_CIFS_EXPERIMENTAL
  80
  81 extern int match_sid(struct cifs_sid *);
  82 extern int compare_sids(struct cifs_sid *, struct cifs_sid *);
  83
  84 #endif /*  CONFIG_CIFS_EXPERIMENTAL */
  85
  86 #endif /* _CIFSACL_H */