1  /* pread.c -- version of pread for gold.  */
       2  
       3  /* Copyright (C) 2006-2023 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  
      34  extern ssize_t pread (int, void *, size_t, off_t);
      35  
      36  ssize_t
      37  pread (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  }