/* * 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 '-') */ #define SID_STRING_BASE_SIZE (2 + 3 + 15 + 1) #define SID_STRING_SUBAUTH_SIZE (11) /* size of a single subauth string */ struct cifs_ntsd { __le16 revision; /* revision level */ __le16 type; __le32 osidoffset; __le32 gsidoffset; __le32 sacloffset; __le32 dacloffset; } __attribute__((packed)); struct cifs_sid { __u8 revision; /* revision level */ __u8 num_subauth; __u8 authority[NUM_AUTHS]; __le32 sub_auth[SID_MAX_SUB_AUTHORITIES]; /* sub_auth[num_subauth] */ } __attribute__((packed)); /* size of a struct cifs_sid, sans sub_auth array */ #define CIFS_SID_BASE_SIZE (1 + 1 + NUM_AUTHS) struct cifs_acl { __le16 revision; /* revision level */ __le16 size; __le32 num_aces; } __attribute__((packed)); struct cifs_ace { __u8 type; __u8 flags; __le16 size; __le32 access_req; struct cifs_sid sid; /* ie UUID of user or group who gets these perms */ } __attribute__((packed)); #endif /* _CIFSACL_H */ 28672bf'>root/net/irda/Kconfig
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