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libceph: support for advisory locking on RADOS objects

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This patch adds support for rados lock, unlock and break lock.

Based heavily on code by Mike Christie <michaelc@cs.wisc.edu>.

Signed-off-by: Douglas Fuller <dfuller@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Alex Elder <elder@linaro.org>
This commit is contained in:
Douglas Fuller
2015-06-18 13:06:10 -07:00
committed by Ilya Dryomov
parent 428a715811
commit f66241cb99
3 changed files with 208 additions and 0 deletions
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27
include/linux/ceph/cls_lock_client.h Normal file
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#ifndef _LINUX_CEPH_CLS_LOCK_CLIENT_H
#define _LINUX_CEPH_CLS_LOCK_CLIENT_H
#include <linux/ceph/osd_client.h>
enum ceph_cls_lock_type {
CEPH_CLS_LOCK_NONE = 0,
CEPH_CLS_LOCK_EXCLUSIVE = 1,
CEPH_CLS_LOCK_SHARED = 2,
};
int ceph_cls_lock(struct ceph_osd_client *osdc,
struct ceph_object_id *oid,
struct ceph_object_locator *oloc,
char *lock_name, u8 type, char *cookie,
char *tag, char *desc, u8 flags);
int ceph_cls_unlock(struct ceph_osd_client *osdc,
struct ceph_object_id *oid,
struct ceph_object_locator *oloc,
char *lock_name, char *cookie);
int ceph_cls_break_lock(struct ceph_osd_client *osdc,
struct ceph_object_id *oid,
struct ceph_object_locator *oloc,
char *lock_name, char *cookie,
struct ceph_entity_name *locker);
#endif