1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
/*
** Copyright 1998 - 1999 Double Precision, Inc. See COPYING for
** distribution information.
*/
/* $Id: lockfcntl.c,v 1.3 1999/12/06 13:18:55 mrsam Exp $ */
#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));
}
|
