1 files changed, 78 insertions, 0 deletions

diff --git a/fs/afs/cell.h b/fs/afs/cell.h
new file mode 100644
index 000000000000..48349108fb00
--- /dev/null
+++ b/fs/afs/cell.h
@@ -0,0 +1,78 @@
+/* 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 */