linux-imx

/*

 *   fs/cifs/cifsacl.h

 *

 *   Copyright (c) International Business Machines  Corp., 2007

 *   Author(s): Steve French (sfrench@us.ibm.com)

 *

 *   This library is free software; you can redistribute it and/or modify

 *   it under the terms of the GNU Lesser General Public License as published

 *   by the Free Software Foundation; either version 2.1 of the License, or

 *   (at your option) any later version.

 *

 *   This library is distributed in the hope that it will be useful,

 *   but WITHOUT ANY WARRANTY; without even the implied warranty of

 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See

 *   the GNU Lesser General Public License for more details.

 *

 *   You should have received a copy of the GNU Lesser General Public License

 *   along with this library; if not, write to the Free Software

 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

 */

​

#ifndef _CIFSACL_H

#define _CIFSACL_H

​

​

#define NUM_AUTHS (6)   /* number of authority fields */

#define SID_MAX_SUB_AUTHORITIES (15) /* max number of sub authority fields */

​

#define READ_BIT        0x4

#define WRITE_BIT       0x2

#define EXEC_BIT        0x1

​

#define UBITSHIFT   6

#define GBITSHIFT   3

​

#define ACCESS_ALLOWED  0

#define ACCESS_DENIED   1

​

#define SIDOWNER 1

#define SIDGROUP 2

​

/*

 * Security Descriptor length containing DACL with 3 ACEs (one each for

 * owner, group and world).

 */

#define DEFAULT_SEC_DESC_LEN (sizeof(struct cifs_ntsd) + \

                  sizeof(struct cifs_acl) + \

                  (sizeof(struct cifs_ace) * 3))

​

/*

 * Maximum size of a string representation of a SID:

 *

 * The fields are unsigned values in decimal. So:

 *

 * u8:  max 3 bytes in decimal

 * u32: max 10 bytes in decimal

 *

 * "S-" + 3 bytes for version field + 15 for authority field + NULL terminator

 *

 * For authority field, max is when all 6 values are non-zero and it must be

 * represented in hex. So "-0x" + 12 hex digits.

 *

 * Add 11 bytes for each subauthority field (10 bytes each + 1 for '-')