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 */