1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/* cell.h: AFS cell record
|
|
*
|
|
* 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_CELL_H
|
|
#define _LINUX_AFS_CELL_H
|
|
|
|
#include "types.h"
|
|
#include "cache.h"
|
|
|
|
#define AFS_CELL_MAX_ADDRS 15
|
|
|
|
extern volatile int afs_cells_being_purged; /* T when cells are being purged by rmmod */
|
|
|
|
/*****************************************************************************/
|
|
/*
|
|
* entry in the cached cell catalogue
|
|
*/
|
|
struct afs_cache_cell
|
|
{
|
|
char name[64]; /* cell name (padded with NULs) */
|
|
struct in_addr vl_servers[15]; /* cached cell VL servers */
|
|
};
|
|
|
|
/*****************************************************************************/
|
|
/*
|
|
* AFS cell record
|
|
*/
|
|
struct afs_cell
|
|
{
|
|
atomic_t usage;
|
|
struct list_head link; /* main cell list link */
|
|
struct list_head proc_link; /* /proc cell list link */
|
|
struct proc_dir_entry *proc_dir; /* /proc dir for this cell */
|
|
#ifdef AFS_CACHING_SUPPORT
|
|
struct cachefs_cookie *cache; /* caching cookie */
|
|
#endif
|
|
|
|
/* server record management */
|
|
rwlock_t sv_lock; /* active server list lock */
|
|
struct list_head sv_list; /* active server list */
|
|
struct list_head sv_graveyard; /* inactive server list */
|
|
spinlock_t sv_gylock; /* inactive server list lock */
|
|
|
|
/* volume location record management */
|
|
struct rw_semaphore vl_sem; /* volume management serialisation semaphore */
|
|
struct list_head vl_list; /* cell's active VL record list */
|
|
struct list_head vl_graveyard; /* cell's inactive VL record list */
|
|
spinlock_t vl_gylock; /* graveyard lock */
|
|
unsigned short vl_naddrs; /* number of VL servers in addr list */
|
|
unsigned short vl_curr_svix; /* current server index */
|
|
struct in_addr vl_addrs[AFS_CELL_MAX_ADDRS]; /* cell VL server addresses */
|
|
|
|
char name[0]; /* cell name - must go last */
|
|
};
|
|
|
|
extern int afs_cell_init(char *rootcell);
|
|
|
|
extern int afs_cell_create(const char *name, char *vllist, struct afs_cell **_cell);
|
|
|
|
extern int afs_cell_lookup(const char *name, unsigned nmsize, struct afs_cell **_cell);
|
|
|
|
#define afs_get_cell(C) do { atomic_inc(&(C)->usage); } while(0)
|
|
|
|
extern struct afs_cell *afs_get_cell_maybe(struct afs_cell **_cell);
|
|
|
|
extern void afs_put_cell(struct afs_cell *cell);
|
|
|
|
extern void afs_cell_purge(void);
|
|
|
|
#endif /* _LINUX_AFS_CELL_H */
|