1 /* AFS common types
2 *
3 * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11
12 #ifndef AFS_H
13 #define AFS_H
14
15 #include <linux/in.h>
16
17 #define AFS_MAXCELLNAME 64 /* maximum length of a cell name */
18 #define AFS_MAXVOLNAME 64 /* maximum length of a volume name */
19 #define AFSNAMEMAX 256 /* maximum length of a filename plus NUL */
20 #define AFSPATHMAX 1024 /* maximum length of a pathname plus NUL */
21 #define AFSOPAQUEMAX 1024 /* maximum length of an opaque field */
22
23 typedef unsigned afs_volid_t;
24 typedef unsigned afs_vnodeid_t;
25 typedef unsigned long long afs_dataversion_t;
26
27 typedef enum {
28 AFSVL_RWVOL, /* read/write volume */
29 AFSVL_ROVOL, /* read-only volume */
30 AFSVL_BACKVOL, /* backup volume */
31 } __attribute__((packed)) afs_voltype_t;
32
33 typedef enum {
34 AFS_FTYPE_INVALID = 0,
35 AFS_FTYPE_FILE = 1,
36 AFS_FTYPE_DIR = 2,
37 AFS_FTYPE_SYMLINK = 3,
38 } afs_file_type_t;
39
40 typedef enum {
41 AFS_LOCK_READ = 0, /* read lock request */
42 AFS_LOCK_WRITE = 1, /* write lock request */
43 } afs_lock_type_t;
44
45 #define AFS_LOCKWAIT (5 * 60) /* time until a lock times out (seconds) */
46
47 /*
48 * AFS file identifier
49 */
50 struct afs_fid {
51 afs_volid_t vid; /* volume ID */
52 afs_vnodeid_t vnode; /* file index within volume */
53 unsigned unique; /* unique ID number (file index version) */
54 };
55
56 /*
57 * AFS callback notification
58 */
59 typedef enum {
60 AFSCM_CB_UNTYPED = 0, /* no type set on CB break */
61 AFSCM_CB_EXCLUSIVE = 1, /* CB exclusive to CM [not implemented] */
62 AFSCM_CB_SHARED = 2, /* CB shared by other CM's */
63 AFSCM_CB_DROPPED = 3, /* CB promise cancelled by file server */
64 } afs_callback_type_t;
65
66 struct afs_callback {
67 struct afs_fid fid; /* file identifier */
68 unsigned version; /* callback version */
69 unsigned expiry; /* time at which expires */
70 afs_callback_type_t type; /* type of callback */
71 };
72
73 #define AFSCBMAX 50 /* maximum callbacks transferred per bulk op */
74
75 /*
76 * AFS volume information
77 */
78 struct afs_volume_info {
79 afs_volid_t vid; /* volume ID */
80 afs_voltype_t type; /* type of this volume */
81 afs_volid_t type_vids[5]; /* volume ID's for possible types for this vol */
82
83 /* list of fileservers serving this volume */
84 size_t nservers; /* number of entries used in servers[] */
85 struct {
86 struct in_addr addr; /* fileserver address */
87 } servers[8];
88 };
89
90 /*
91 * AFS security ACE access mask
92 */
93 typedef u32 afs_access_t;
94 #define AFS_ACE_READ 0x00000001U /* - permission to read a file/dir */
95 #define AFS_ACE_WRITE 0x00000002U /* - permission to write/chmod a file */
96 #define AFS_ACE_INSERT 0x00000004U /* - permission to create dirent in a dir */
97 #define AFS_ACE_LOOKUP 0x00000008U /* - permission to lookup a file/dir in a dir */
98 #define AFS_ACE_DELETE 0x00000010U /* - permission to delete a dirent from a dir */
99 #define AFS_ACE_LOCK 0x00000020U /* - permission to lock a file */
100 #define AFS_ACE_ADMINISTER 0x00000040U /* - permission to change ACL */
101 #define AFS_ACE_USER_A 0x01000000U /* - 'A' user-defined permission */
102 #define AFS_ACE_USER_B 0x02000000U /* - 'B' user-defined permission */
103 #define AFS_ACE_USER_C 0x04000000U /* - 'C' user-defined permission */
104 #define AFS_ACE_USER_D 0x08000000U /* - 'D' user-defined permission */
105 #define AFS_ACE_USER_E 0x10000000U /* - 'E' user-defined permission */
106 #define AFS_ACE_USER_F 0x20000000U /* - 'F' user-defined permission */
107 #define AFS_ACE_USER_G 0x40000000U /* - 'G' user-defined permission */
108 #define AFS_ACE_USER_H 0x80000000U /* - 'H' user-defined permission */
109
110 /*
111 * AFS file status information
112 */
113 struct afs_file_status {
114 unsigned if_version; /* interface version */
115 #define AFS_FSTATUS_VERSION 1
116
117 afs_file_type_t type; /* file type */
118 unsigned nlink; /* link count */
119 u64 size; /* file size */
120 afs_dataversion_t data_version; /* current data version */
121 u32 author; /* author ID */
122 u32 owner; /* owner ID */
123 u32 group; /* group ID */
124 afs_access_t caller_access; /* access rights for authenticated caller */
125 afs_access_t anon_access; /* access rights for unauthenticated caller */
126 umode_t mode; /* UNIX mode */
127 struct afs_fid parent; /* parent dir ID for non-dirs only */
128 time_t mtime_client; /* last time client changed data */
129 time_t mtime_server; /* last time server changed data */
130 s32 lock_count; /* file lock count (0=UNLK -1=WRLCK +ve=#RDLCK */
131 };
132
133 /*
134 * AFS file status change request
135 */
136 struct afs_store_status {
137 u32 mask; /* which bits of the struct are set */
138 u32 mtime_client; /* last time client changed data */
139 u32 owner; /* owner ID */
140 u32 group; /* group ID */
141 umode_t mode; /* UNIX mode */
142 };
143
144 #define AFS_SET_MTIME 0x01 /* set the mtime */
145 #define AFS_SET_OWNER 0x02 /* set the owner ID */
146 #define AFS_SET_GROUP 0x04 /* set the group ID (unsupported?) */
147 #define AFS_SET_MODE 0x08 /* set the UNIX mode */
148 #define AFS_SET_SEG_SIZE 0x10 /* set the segment size (unsupported) */
149
150 /*
151 * AFS volume synchronisation information
152 */
153 struct afs_volsync {
154 time_t creation; /* volume creation time */
155 };
156
157 /*
158 * AFS volume status record
159 */
160 struct afs_volume_status {
161 u32 vid; /* volume ID */
162 u32 parent_id; /* parent volume ID */
163 u8 online; /* true if volume currently online and available */
164 u8 in_service; /* true if volume currently in service */
165 u8 blessed; /* same as in_service */
166 u8 needs_salvage; /* true if consistency checking required */
167 u32 type; /* volume type (afs_voltype_t) */
168 u32 min_quota; /* minimum space set aside (blocks) */
169 u32 max_quota; /* maximum space this volume may occupy (blocks) */
170 u32 blocks_in_use; /* space this volume currently occupies (blocks) */
171 u32 part_blocks_avail; /* space available in volume's partition */
172 u32 part_max_blocks; /* size of volume's partition */
173 };
174
175 #define AFS_BLOCK_SIZE 1024
176
177 #endif /* AFS_H */
178
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