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
37
38
39
40
41
42
43
44
|
/* Linux version of pwrite so we can have a weak alias */
#include <_ansi.h>
#include <unistd.h>
#include <reent.h>
#include <machine/weakalias.h>
ssize_t
_pwrite_r (struct _reent *rptr,
int fd,
const void *buf,
size_t n,
off_t off)
{
off_t cur_pos;
_READ_WRITE_RETURN_TYPE num_written;
if ((cur_pos = _lseek_r (rptr, fd, 0, SEEK_CUR)) == (off_t)-1)
return -1;
if (_lseek_r (rptr, fd, off, SEEK_SET) == (off_t)-1)
return -1;
num_written = _write_r (rptr, fd, buf, n);
if (_lseek_r (rptr, fd, cur_pos, SEEK_SET) == (off_t)-1)
return -1;
return (ssize_t)num_written;
}
#ifndef _REENT_ONLY
ssize_t
__libc_pwrite (int fd,
const void *buf,
size_t n,
off_t off)
{
return _pwrite_r (_REENT, fd, buf, n, off);
}
weak_alias(__libc_pwrite,pwrite)
#endif
|
