Release 4.16 fs/afs/afs.h
/* AFS common types
*
* Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef AFS_H
#define AFS_H
#include <linux/in.h>
#define AFS_MAXCELLNAME 64
/* Maximum length of a cell name */
#define AFS_MAXVOLNAME 64
/* Maximum length of a volume name */
#define AFS_MAXNSERVERS 8
/* Maximum servers in a basic volume record */
#define AFS_NMAXNSERVERS 13
/* Maximum servers in a N/U-class volume record */
#define AFS_MAXTYPES 3
/* Maximum number of volume types */
#define AFSNAMEMAX 256
/* Maximum length of a filename plus NUL */
#define AFSPATHMAX 1024
/* Maximum length of a pathname plus NUL */
#define AFSOPAQUEMAX 1024
/* Maximum length of an opaque field */
typedef unsigned afs_volid_t;
typedef unsigned afs_vnodeid_t;
typedef unsigned long long afs_dataversion_t;
typedef enum {
AFSVL_RWVOL, /* read/write volume */
AFSVL_ROVOL, /* read-only volume */
AFSVL_BACKVOL, /* backup volume */
} __attribute__((packed)) afs_voltype_t;
typedef enum {
AFS_FTYPE_INVALID = 0,
AFS_FTYPE_FILE = 1,
AFS_FTYPE_DIR = 2,
AFS_FTYPE_SYMLINK = 3,
}
afs_file_type_t;
typedef enum {
AFS_LOCK_READ = 0, /* read lock request */
AFS_LOCK_WRITE = 1, /* write lock request */
} afs_lock_type_t;
#define AFS_LOCKWAIT (5 * 60)
/* time until a lock times out (seconds) */
/*
* AFS file identifier
*/
struct afs_fid {
afs_volid_t vid; /* volume ID */
afs_vnodeid_t vnode; /* file index within volume */
unsigned unique; /* unique ID number (file index version) */
};
/*
* AFS callback notification
*/
typedef enum {
AFSCM_CB_UNTYPED = 0, /* no type set on CB break */
AFSCM_CB_EXCLUSIVE = 1, /* CB exclusive to CM [not implemented] */
AFSCM_CB_SHARED = 2, /* CB shared by other CM's */
AFSCM_CB_DROPPED = 3, /* CB promise cancelled by file server */
} afs_callback_type_t;
struct afs_callback {
struct afs_fid fid; /* file identifier */
unsigned version; /* callback version */
unsigned expiry; /* time at which expires */
afs_callback_type_t type; /* type of callback */
};
#define AFSCBMAX 50
/* maximum callbacks transferred per bulk op */
struct afs_uuid {
__be32 time_low; /* low part of timestamp */
__be16 time_mid; /* mid part of timestamp */
__be16 time_hi_and_version; /* high part of timestamp and version */
__s8 clock_seq_hi_and_reserved; /* clock seq hi and variant */
__s8 clock_seq_low; /* clock seq low */
__s8 node[6]; /* spatially unique node ID (MAC addr) */
};
/*
* AFS volume information
*/
struct afs_volume_info {
afs_volid_t vid; /* volume ID */
afs_voltype_t type; /* type of this volume */
afs_volid_t type_vids[5]; /* volume ID's for possible types for this vol */
/* list of fileservers serving this volume */
size_t nservers; /* number of entries used in servers[] */
struct {
struct in_addr addr; /* fileserver address */
} servers[8];
};
/*
* AFS security ACE access mask
*/
typedef u32 afs_access_t;
#define AFS_ACE_READ 0x00000001U
/* - permission to read a file/dir */
#define AFS_ACE_WRITE 0x00000002U
/* - permission to write/chmod a file */
#define AFS_ACE_INSERT 0x00000004U
/* - permission to create dirent in a dir */
#define AFS_ACE_LOOKUP 0x00000008U
/* - permission to lookup a file/dir in a dir */
#define AFS_ACE_DELETE 0x00000010U
/* - permission to delete a dirent from a dir */
#define AFS_ACE_LOCK 0x00000020U
/* - permission to lock a file */
#define AFS_ACE_ADMINISTER 0x00000040U
/* - permission to change ACL */
#define AFS_ACE_USER_A 0x01000000U
/* - 'A' user-defined permission */
#define AFS_ACE_USER_B 0x02000000U
/* - 'B' user-defined permission */
#define AFS_ACE_USER_C 0x04000000U
/* - 'C' user-defined permission */
#define AFS_ACE_USER_D 0x08000000U
/* - 'D' user-defined permission */
#define AFS_ACE_USER_E 0x10000000U
/* - 'E' user-defined permission */
#define AFS_ACE_USER_F 0x20000000U
/* - 'F' user-defined permission */
#define AFS_ACE_USER_G 0x40000000U
/* - 'G' user-defined permission */
#define AFS_ACE_USER_H 0x80000000U
/* - 'H' user-defined permission */
/*
* AFS file status information
*/
struct afs_file_status {
unsigned if_version; /* interface version */
#define AFS_FSTATUS_VERSION 1
afs_file_type_t type; /* file type */
unsigned nlink; /* link count */
u64 size; /* file size */
afs_dataversion_t data_version; /* current data version */
u32 author; /* author ID */
kuid_t owner; /* owner ID */
kgid_t group; /* group ID */
afs_access_t caller_access; /* access rights for authenticated caller */
afs_access_t anon_access; /* access rights for unauthenticated caller */
umode_t mode; /* UNIX mode */
time_t mtime_client; /* last time client changed data */
time_t mtime_server; /* last time server changed data */
s32 lock_count; /* file lock count (0=UNLK -1=WRLCK +ve=#RDLCK */
};
/*
* AFS file status change request
*/
#define AFS_SET_MTIME 0x01
/* set the mtime */
#define AFS_SET_OWNER 0x02
/* set the owner ID */
#define AFS_SET_GROUP 0x04
/* set the group ID (unsupported?) */
#define AFS_SET_MODE 0x08
/* set the UNIX mode */
#define AFS_SET_SEG_SIZE 0x10
/* set the segment size (unsupported) */
/*
* AFS volume synchronisation information
*/
struct afs_volsync {
time_t creation; /* volume creation time */
};
/*
* AFS volume status record
*/
struct afs_volume_status {
u32 vid; /* volume ID */
u32 parent_id; /* parent volume ID */
u8 online; /* true if volume currently online and available */
u8 in_service; /* true if volume currently in service */
u8 blessed; /* same as in_service */
u8 needs_salvage; /* true if consistency checking required */
u32 type; /* volume type (afs_voltype_t) */
u32 min_quota; /* minimum space set aside (blocks) */
u32 max_quota; /* maximum space this volume may occupy (blocks) */
u32 blocks_in_use; /* space this volume currently occupies (blocks) */
u32 part_blocks_avail; /* space available in volume's partition */
u32 part_max_blocks; /* size of volume's partition */
};
#define AFS_BLOCK_SIZE 1024
/*
* XDR encoding of UUID in AFS.
*/
struct afs_uuid__xdr {
__be32 time_low;
__be32 time_mid;
__be32 time_hi_and_version;
__be32 clock_seq_hi_and_reserved;
__be32 clock_seq_low;
__be32 node[6];
};
#endif /* AFS_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Howells | 534 | 99.26% | 10 | 83.33% |
| Eric W. Biedermann | 2 | 0.37% | 1 | 8.33% |
| Andrew Morton | 2 | 0.37% | 1 | 8.33% |
| Total | 538 | 100.00% | 12 | 100.00% |
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