[hcoop/debian/courier-authlib.git] / libs / liblock / lockfcntl.c

/*
** Copyright 1998 - 1999 Double Precision, Inc.  See COPYING for
** distribution information.
*/

#if	HAVE_CONFIG_H
#include	"config.h"
#endif
#include	<sys/types.h>
#if	HAVE_FCNTL_H
#include	<fcntl.h>
#endif
#if	HAVE_SYS_FCNTL_H
#include	<sys/fcntl.h>
#endif
#include	"liblock.h"

int	ll_lockfd(int fd, int ltype, LL_OFFSET_TYPE start, LL_OFFSET_TYPE len)
{
#if HAS_FLOCK_T
flock_t	ft;
#else
struct flock ft;
#endif

	ft.l_type=ltype & ll_unlock ? F_UNLCK:
		ltype & ll_writelock ? F_WRLCK:F_RDLCK;
	ft.l_whence=ltype & ll_whence_curpos ? 1:
			ltype & ll_whence_end ? 2:0;
	ft.l_start=start;
	ft.l_len=len;

	return (fcntl(fd, (ltype & ll_unlock) == 0 && (ltype & ll_wait)
			? F_SETLKW:F_SETLK, &ft));
}
Commit	Line	Data
d9898ee8	1	/*
	2	** Copyright 1998 - 1999 Double Precision, Inc. See COPYING for
	3	** distribution information.
	4	*/
	5
d9898ee8	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
	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	}