mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-21 13:34:40 +03:00
36cbc6db24
These two flags may be not reset at the end of the command when the unlock is implicit, which is a problem if the cmd struct is reused. Clear the flags in the general fin_locking.
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/*
|
|
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
|
|
* Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
|
|
*
|
|
* This file is part of LVM2.
|
|
*
|
|
* This copyrighted material is made available to anyone wishing to use,
|
|
* modify, copy, or redistribute it subject to the terms and conditions
|
|
* of the GNU Lesser General Public License v.2.1.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef _LVM_LOCKING_H
|
|
#define _LVM_LOCKING_H
|
|
|
|
#include "lib/uuid/uuid.h"
|
|
#include "lib/config/config.h"
|
|
|
|
struct logical_volume;
|
|
|
|
int init_locking(struct cmd_context *cmd, int file_locking_sysinit, int file_locking_readonly, int file_locking_ignorefail);
|
|
void fin_locking(struct cmd_context *cmd);
|
|
void reset_locking(void);
|
|
int vg_write_lock_held(void);
|
|
|
|
/*
|
|
* Lock/unlock on-disk volume group data.
|
|
* Use VG_GLOBAL as a global lock.
|
|
* char *vol holds volume group name.
|
|
* If more than one lock needs to be held simultaneously, they must be
|
|
* acquired in alphabetical order of 'vol' (to avoid deadlocks).
|
|
*/
|
|
int lock_vol(struct cmd_context *cmd, const char *vol, uint32_t flags, const struct logical_volume *lv);
|
|
|
|
#define LCK_TYPE_MASK 0x00000007U
|
|
#define LCK_READ 0x00000001U
|
|
#define LCK_WRITE 0x00000004U
|
|
#define LCK_UNLOCK 0x00000006U
|
|
|
|
/*
|
|
* Lock bits.
|
|
* Bottom 8 bits except LCK_LOCAL form args[0] in cluster comms.
|
|
*/
|
|
#define LCK_NONBLOCK 0x00000010U /* Don't block waiting for lock? */
|
|
#define LCK_CONVERT 0x00000020U
|
|
|
|
#define VG_ORPHANS "#orphans"
|
|
#define VG_GLOBAL "#global"
|
|
|
|
#define LCK_VG_READ LCK_READ
|
|
#define LCK_VG_WRITE LCK_WRITE
|
|
#define LCK_VG_UNLOCK LCK_UNLOCK
|
|
|
|
#define unlock_vg(cmd, vg, vol) \
|
|
do { \
|
|
if (is_real_vg(vol) && !sync_local_dev_names(cmd)) \
|
|
stack; \
|
|
if (!lock_vol(cmd, vol, LCK_VG_UNLOCK, NULL)) \
|
|
stack; \
|
|
} while (0)
|
|
#define unlock_and_release_vg(cmd, vg, vol) \
|
|
do { \
|
|
unlock_vg(cmd, vg, vol); \
|
|
release_vg(vg); \
|
|
} while (0)
|
|
|
|
int sync_local_dev_names(struct cmd_context* cmd);
|
|
|
|
/* Process list of LVs */
|
|
struct volume_group;
|
|
int activate_lvs(struct cmd_context *cmd, struct dm_list *lvs, unsigned exclusive);
|
|
|
|
int lockf_global(struct cmd_context *cmd, const char *mode);
|
|
int lockf_global_convert(struct cmd_context *cmd, const char *mode);
|
|
int lock_global(struct cmd_context *cmd, const char *mode);
|
|
int lock_global_convert(struct cmd_context *cmd, const char *mode);
|
|
|
|
#endif
|