mirror of
git://sourceware.org/git/lvm2.git
synced 2025-01-21 22:04:19 +03:00
75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
/*
|
|
* Copyright (C) 2010-2015 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
/*
|
|
* Wrappers around liblvm2cmd functions for dmeventd plug-ins.
|
|
*
|
|
* liblvm2cmd is not thread-safe so the locking in this library helps dmeventd
|
|
* threads to co-operate in sharing a single instance.
|
|
*
|
|
* FIXME Either support this properly as a generic liblvm2cmd wrapper or make
|
|
* liblvm2cmd thread-safe so this can go away.
|
|
*/
|
|
|
|
#ifndef _DMEVENTD_LVMWRAP_H
|
|
#define _DMEVENTD_LVMWRAP_H
|
|
|
|
struct dm_pool;
|
|
|
|
int dmeventd_lvm2_init(void);
|
|
void dmeventd_lvm2_exit(void);
|
|
int dmeventd_lvm2_run(const char *cmdline);
|
|
|
|
void dmeventd_lvm2_lock(void);
|
|
void dmeventd_lvm2_unlock(void);
|
|
|
|
struct dm_pool *dmeventd_lvm2_pool(void);
|
|
|
|
int dmeventd_lvm2_command(struct dm_pool *mem, char *buffer, size_t size,
|
|
const char *cmd, const char *device);
|
|
|
|
#define dmeventd_lvm2_run_with_lock(cmdline) \
|
|
({\
|
|
int rc;\
|
|
dmeventd_lvm2_lock();\
|
|
rc = dmeventd_lvm2_run(cmdline);\
|
|
dmeventd_lvm2_unlock();\
|
|
rc;\
|
|
})
|
|
|
|
#define dmeventd_lvm2_init_with_pool(name, st) \
|
|
({\
|
|
struct dm_pool *mem;\
|
|
st = NULL;\
|
|
if (dmeventd_lvm2_init()) {\
|
|
if ((mem = dm_pool_create(name, 2048)) &&\
|
|
(st = dm_pool_zalloc(mem, sizeof(*st))))\
|
|
st->mem = mem;\
|
|
else {\
|
|
if (mem)\
|
|
dm_pool_destroy(mem);\
|
|
dmeventd_lvm2_exit();\
|
|
}\
|
|
}\
|
|
st;\
|
|
})
|
|
|
|
#define dmeventd_lvm2_exit_with_pool(pool) \
|
|
do {\
|
|
dm_pool_destroy(pool->mem);\
|
|
dmeventd_lvm2_exit();\
|
|
} while(0)
|
|
|
|
#endif /* _DMEVENTD_LVMWRAP_H */
|