1 /* pread.c -- version of pread for gold. */ 2 3 /* Copyright (C) 2006-2016 Free Software Foundation, Inc. 4 Written by Ian Lance Taylor <iant (at) 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 } 43
