1/* pread.c -- version of pread for gold.  */
2
3/* Copyright (C) 2006-2020 Free Software Foundation, Inc.
4   Written by Ian Lance Taylor <iant@google.com>.
5
6   This file is part of gold.
7
8   This program is free software; you can redistribute it and/or modify
9   it under the terms of the GNU General Public License as published by
10   the Free Software Foundation; either version 3 of the License, or
11   (at your option) any later version.
12
13   This program is distributed in the hope that it will be useful,
14   but WITHOUT ANY WARRANTY; without even the implied warranty of
15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16   GNU General Public License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with this program; if not, write to the Free Software
20   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21   MA 02110-1301, USA.  */
22
23/* This file implements pread for systems which don't have it.  This
24   file is only compiled if pread is not present on the system.  This
25   is not an exact version of pread, as it does not preserve the
26   current file offset.  */
27
28#include "config.h"
29
30#include <stdio.h>
31#include <sys/types.h>
32#include <unistd.h>
33
34extern ssize_t pread (int, void *, size_t, off_t);
35
36ssize_t
37pread (int fd, void *buf, size_t count, off_t offset)
38{
39  if (lseek(fd, offset, SEEK_SET) != offset)
40    return -1;
41  return read(fd, buf, count);
42}
43