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fs/afs/afs.h
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/* AFS common types |
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* |
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* Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. |
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* 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. */ |
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#ifndef AFS_H #define AFS_H |
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#include <linux/in.h> |
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#define AFS_MAXCELLNAME 64 /* maximum length of a cell name */ #define AFS_MAXVOLNAME 64 /* maximum length of a volume name */ |
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#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 */ |
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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; |
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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) */ |
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/* * AFS file identifier */ |
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struct afs_fid { |
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afs_volid_t vid; /* volume ID */ afs_vnodeid_t vnode; /* file index within volume */ unsigned unique; /* unique ID number (file index version) */ }; |
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/* * 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; |
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struct afs_callback { |
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struct afs_fid fid; /* file identifier */ unsigned version; /* callback version */ unsigned expiry; /* time at which expires */ afs_callback_type_t type; /* type of callback */ }; |
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#define AFSCBMAX 50 /* maximum callbacks transferred per bulk op */ |
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/* * AFS volume information */ |
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struct afs_volume_info { |
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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 */ |
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/* list of fileservers serving this volume */ size_t nservers; /* number of entries used in servers[] */ struct { struct in_addr addr; /* fileserver address */ } servers[8]; }; |
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/* |
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* 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 */ /* |
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* AFS file status information */ |
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struct afs_file_status { |
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unsigned if_version; /* interface version */ #define AFS_FSTATUS_VERSION 1 afs_file_type_t type; /* file type */ unsigned nlink; /* link count */ |
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u64 size; /* file size */ |
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afs_dataversion_t data_version; /* current data version */ |
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u32 author; /* author ID */ u32 owner; /* owner ID */ u32 group; /* group ID */ |
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afs_access_t caller_access; /* access rights for authenticated caller */ afs_access_t anon_access; /* access rights for unauthenticated caller */ |
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umode_t mode; /* UNIX mode */ |
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struct afs_fid parent; /* parent dir ID for non-dirs only */ |
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time_t mtime_client; /* last time client changed data */ time_t mtime_server; /* last time server changed data */ |
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s32 lock_count; /* file lock count (0=UNLK -1=WRLCK +ve=#RDLCK */ |
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}; |
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/* |
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* AFS file status change request */ struct afs_store_status { u32 mask; /* which bits of the struct are set */ u32 mtime_client; /* last time client changed data */ u32 owner; /* owner ID */ u32 group; /* group ID */ umode_t mode; /* UNIX mode */ }; #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) */ /* |
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* AFS volume synchronisation information */ |
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struct afs_volsync { |
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time_t creation; /* volume creation time */ }; |
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/* * 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 |
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#endif /* AFS_H */ |