include/ulockmgr.h

   1 /*
   2   libulockmgr: Userspace Lock Manager Library
   3   Copyright (C) 2006  Miklos Szeredi <miklos@szeredi.hu>
   4
   5   This program can be distributed under the terms of the GNU LGPLv2.
   6   See the file COPYING.LIB.
   7 */
   8
   9 #include <stdint.h>
  10 #include <fcntl.h>
  11 #include <sys/types.h>
  12
  13 /**
  14  * Perform POSIX locking operation
  15  *
  16  * @param fd the file descriptor
  17  * @param cmd the locking command (F_GETFL, F_SETLK or F_SETLKW)
  18  * @param lock the lock parameters
  19  * @param owner the lock owner ID cookie
  20  * @param owner_len length of the lock owner ID cookie
  21  * @return 0 on success -errno on error
  22  */
  23 int ulockmgr_op(int fd, int cmd, struct flock *lock, const void *owner,
  24                 size_t owner_len);