1 /*
2 ** Copyright 1998 - 1999 Double Precision, Inc.  See COPYING for
3 ** distribution information.
4 */
5 
6 #if	HAVE_CONFIG_H
7 #include	"config.h"
8 #endif
9 #include	<sys/types.h>
10 #if	HAVE_FCNTL_H
11 #include	<fcntl.h>
12 #endif
13 #if	HAVE_SYS_FCNTL_H
14 #include	<sys/fcntl.h>
15 #endif
16 #include	"liblock.h"
17 
ll_lockfd(int fd,int ltype,LL_OFFSET_TYPE start,LL_OFFSET_TYPE len)18 int	ll_lockfd(int fd, int ltype, LL_OFFSET_TYPE start, LL_OFFSET_TYPE len)
19 {
20 #if HAS_FLOCK_T
21 flock_t	ft;
22 #else
23 struct flock ft;
24 #endif
25 
26 	ft.l_type=ltype & ll_unlock ? F_UNLCK:
27 		ltype & ll_writelock ? F_WRLCK:F_RDLCK;
28 	ft.l_whence=ltype & ll_whence_curpos ? 1:
29 			ltype & ll_whence_end ? 2:0;
30 	ft.l_start=start;
31 	ft.l_len=len;
32 
33 	return (fcntl(fd, (ltype & ll_unlock) == 0 && (ltype & ll_wait)
34 			? F_SETLKW:F_SETLK, &ft));
35 }
36