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Diffstat (limited to 'kernel/fs/afs/afs.h')
| -rw-r--r-- | kernel/fs/afs/afs.h | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/kernel/fs/afs/afs.h b/kernel/fs/afs/afs.h new file mode 100644 index 000000000..3c462ff6d --- /dev/null +++ b/kernel/fs/afs/afs.h @@ -0,0 +1,170 @@ +/* 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 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 */ + +/* + * 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 */ + struct afs_fid parent; /* parent dir ID for non-dirs only */ + 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 + +#endif /* AFS_H */ |