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/* pread.c -- version of pread for gold.  */

/* Copyright 2006, 2007, 2009 Free Software Foundation, Inc.

   Written by Ian Lance Taylor <iant@google.com>.

   This file is part of gold.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,

   MA 02110-1301, USA.  */

/* This file implements pread for systems which don't have it.  This

   file is only compiled if pread is not present on the system.  This

   is not an exact version of pread, as it does not preserve the

   current file offset.  */

#include "config.h"

#include <stdio.h>

#include <sys/types.h>

#include <unistd.h>

extern ssize_t pread (int, void *, size_t, off_t);

ssize_t

pread (int fd, void *buf, size_t count, off_t offset)

{

  if (lseek(fd, offset, SEEK_SET) != offset)

    return -1;

  return read(fd, buf, count);

}