4 * Copyright (c) International Business Machines Corp., 2007
5 * Author(s): Steve French (sfrench@us.ibm.com)
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.
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.
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
26 #define NUM_AUTHS 6 /* number of authority fields */
27 #define SID_MAX_SUB_AUTHORITIES (15) /* max 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 */
39 #define ACCESS_ALLOWED 0
40 #define ACCESS_DENIED 1
46 * Maximum size of a string representation of a SID:
48 * The fields are unsigned values in decimal. So:
50 * u8: max 3 bytes in decimal
51 * u32: max 10 bytes in decimal
53 * "S-" + 3 bytes for version field + 4 bytes for each authority field (3 bytes
54 * per number + 1 for '-') + 11 bytes for each subauthority field (10 bytes
55 * per number + 1 for '-') + NULL terminator.
57 #define SID_STRING_MAX (195)
59 #define SID_ID_MAPPED 0
60 #define SID_ID_PENDING 1
61 #define SID_MAP_EXPIRE (3600 * HZ) /* map entry expires after one hour */
62 #define SID_MAP_RETRY (300 * HZ) /* wait 5 minutes for next attempt to map */
65 __le16 revision; /* revision level */
71 } __attribute__((packed));
74 __u8 revision; /* revision level */
76 __u8 authority[NUM_AUTHS];
77 __le32 sub_auth[SID_MAX_SUB_AUTHORITIES]; /* sub_auth[num_subauth] */
78 } __attribute__((packed));
80 /* size of a struct cifs_sid, sans sub_auth array */
81 #define CIFS_SID_BASE_SIZE (1 + 1 + NUM_AUTHS)
84 __le16 revision; /* revision level */
87 } __attribute__((packed));
94 struct cifs_sid sid; /* ie UUID of user or group who gets these perms */
95 } __attribute__((packed));
98 struct cifs_sid cifssid;
99 char sidname[SIDNAMELENGTH];
100 } __attribute__((packed));
103 unsigned int refcount; /* increment with spinlock, decrement without */
108 struct rb_node rbnode;
113 extern struct key_type cifs_idmap_key_type;
114 extern const struct cred *root_cred;
117 #endif /* _CIFSACL_H */