blob: 8d5ef78417ef565a4da243413637fd54ab6d9359 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
/* ISC license. */
#include <fcntl.h>
#include <unistd.h>
#include <skalibs/djbunix.h>
int fd_islocked (int fd)
{
struct flock fl =
{
.l_type = F_RDLCK,
.l_whence = SEEK_SET,
.l_start = 0,
.l_len = 0
} ;
return fcntl(fd, F_GETLK, &fl) < 0 ? -1 : fl.l_type != F_UNLCK ;
}
|