1 /* $NetBSD: locking_types.h,v 1.1.1.2 2009/12/02 00:26:25 haad Exp $ */ 2 3 /* 4 * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. 5 * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved. 6 * 7 * This file is part of LVM2. 8 * 9 * This copyrighted material is made available to anyone wishing to use, 10 * modify, copy, or redistribute it subject to the terms and conditions 11 * of the GNU Lesser General Public License v.2.1. 12 * 13 * You should have received a copy of the GNU Lesser General Public License 14 * along with this program; if not, write to the Free Software Foundation, 15 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 16 */ 17 18 #include "metadata.h" 19 #include "config.h" 20 21 typedef int (*lock_resource_fn) (struct cmd_context * cmd, const char *resource, 22 uint32_t flags); 23 typedef int (*query_resource_fn) (const char *resource, int *mode); 24 25 typedef void (*fin_lock_fn) (void); 26 typedef void (*reset_lock_fn) (void); 27 28 #define LCK_PRE_MEMLOCK 0x00000001 /* Is memlock() needed before calls? */ 29 #define LCK_CLUSTERED 0x00000002 30 31 struct locking_type { 32 uint32_t flags; 33 lock_resource_fn lock_resource; 34 query_resource_fn query_resource; 35 36 reset_lock_fn reset_locking; 37 fin_lock_fn fin_locking; 38 }; 39 40 /* 41 * Locking types 42 */ 43 int init_no_locking(struct locking_type *locking, struct cmd_context *cmd); 44 45 int init_readonly_locking(struct locking_type *locking, struct cmd_context *cmd); 46 47 int init_file_locking(struct locking_type *locking, struct cmd_context *cmd); 48 49 int init_external_locking(struct locking_type *locking, struct cmd_context *cmd); 50 51 int init_cluster_locking(struct locking_type *locking, struct cmd_context *cmd); 52