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Diffstat (limited to 'fs/afs/volume.h')
| -rw-r--r-- | fs/afs/volume.h | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/fs/afs/volume.h b/fs/afs/volume.h deleted file mode 100644 index bfdcf19ba3f3..000000000000 --- a/fs/afs/volume.h +++ /dev/null @@ -1,140 +0,0 @@ -/* volume.h: AFS volume management - * - * Copyright (C) 2002 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 _LINUX_AFS_VOLUME_H -#define _LINUX_AFS_VOLUME_H - -#include "types.h" -#include "fsclient.h" -#include "kafstimod.h" -#include "kafsasyncd.h" -#include "cache.h" - -typedef enum { - AFS_VLUPD_SLEEP, /* sleeping waiting for update timer to fire */ - AFS_VLUPD_PENDING, /* on pending queue */ - AFS_VLUPD_INPROGRESS, /* op in progress */ - AFS_VLUPD_BUSYSLEEP, /* sleeping because server returned EBUSY */ - -} __attribute__((packed)) afs_vlocation_upd_t; - -/*****************************************************************************/ -/* - * entry in the cached volume location catalogue - */ -struct afs_cache_vlocation -{ - uint8_t name[64]; /* volume name (lowercase, padded with NULs) */ - uint8_t nservers; /* number of entries used in servers[] */ - uint8_t vidmask; /* voltype mask for vid[] */ - uint8_t srvtmask[8]; /* voltype masks for servers[] */ -#define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */ -#define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */ -#define AFS_VOL_VTM_BAK 0x04 /* backup version of the volume is available (on this server) */ - - afs_volid_t vid[3]; /* volume IDs for R/W, R/O and Bak volumes */ - struct in_addr servers[8]; /* fileserver addresses */ - time_t rtime; /* last retrieval time */ -}; - -#ifdef AFS_CACHING_SUPPORT -extern struct cachefs_index_def afs_vlocation_cache_index_def; -#endif - -/*****************************************************************************/ -/* - * volume -> vnode hash table entry - */ -struct afs_cache_vhash -{ - afs_voltype_t vtype; /* which volume variation */ - uint8_t hash_bucket; /* which hash bucket this represents */ -} __attribute__((packed)); - -#ifdef AFS_CACHING_SUPPORT -extern struct cachefs_index_def afs_volume_cache_index_def; -#endif - -/*****************************************************************************/ -/* - * AFS volume location record - */ -struct afs_vlocation -{ - atomic_t usage; - struct list_head link; /* link in cell volume location list */ - struct afs_timer timeout; /* decaching timer */ - struct afs_cell *cell; /* cell to which volume belongs */ -#ifdef AFS_CACHING_SUPPORT - struct cachefs_cookie *cache; /* caching cookie */ -#endif - struct afs_cache_vlocation vldb; /* volume information DB record */ - struct afs_volume *vols[3]; /* volume access record pointer (index by type) */ - rwlock_t lock; /* access lock */ - unsigned long read_jif; /* time at which last read from vlserver */ - struct afs_timer upd_timer; /* update timer */ - struct afs_async_op upd_op; /* update operation */ - afs_vlocation_upd_t upd_state; /* update state */ - unsigned short upd_first_svix; /* first server index during update */ - unsigned short upd_curr_svix; /* current server index during update */ - unsigned short upd_rej_cnt; /* ENOMEDIUM count during update */ - unsigned short upd_busy_cnt; /* EBUSY count during update */ - unsigned short valid; /* T if valid */ -}; - -extern int afs_vlocation_lookup(struct afs_cell *cell, - const char *name, - unsigned namesz, - struct afs_vlocation **_vlocation); - -#define afs_get_vlocation(V) do { atomic_inc(&(V)->usage); } while(0) - -extern void afs_put_vlocation(struct afs_vlocation *vlocation); -extern void afs_vlocation_do_timeout(struct afs_vlocation *vlocation); - -/*****************************************************************************/ -/* - * AFS volume access record - */ -struct afs_volume -{ - atomic_t usage; - struct afs_cell *cell; /* cell to which belongs (unrefd ptr) */ - struct afs_vlocation *vlocation; /* volume location */ -#ifdef AFS_CACHING_SUPPORT - struct cachefs_cookie *cache; /* caching cookie */ -#endif - afs_volid_t vid; /* volume ID */ - afs_voltype_t type; /* type of volume */ - char type_force; /* force volume type (suppress R/O -> R/W) */ - unsigned short nservers; /* number of server slots filled */ - unsigned short rjservers; /* number of servers discarded due to -ENOMEDIUM */ - struct afs_server *servers[8]; /* servers on which volume resides (ordered) */ - struct rw_semaphore server_sem; /* lock for accessing current server */ -}; - -extern int afs_volume_lookup(const char *name, - struct afs_cell *cell, - int rwpath, - struct afs_volume **_volume); - -#define afs_get_volume(V) do { atomic_inc(&(V)->usage); } while(0) - -extern void afs_put_volume(struct afs_volume *volume); - -extern int afs_volume_pick_fileserver(struct afs_volume *volume, - struct afs_server **_server); - -extern int afs_volume_release_fileserver(struct afs_volume *volume, - struct afs_server *server, - int result); - -#endif /* _LINUX_AFS_VOLUME_H */ |