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478b92f0 UD |
1 | /* Copyright (C) 1991, 1995, 1996, 1997 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. | |
28f540f4 | 3 | |
478b92f0 UD |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
28f540f4 | 8 | |
478b92f0 UD |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Library General Public License for more details. | |
28f540f4 | 13 | |
478b92f0 UD |
14 | You should have received a copy of the GNU Library General Public |
15 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
28f540f4 | 18 | |
28f540f4 | 19 | #include <errno.h> |
dfd2257a | 20 | #include <unistd.h> |
28f540f4 | 21 | |
dfd2257a UD |
22 | /* Read NBYTES into BUF from FD at the given position OFFSET without |
23 | changing the file pointer. Return the number read or -1. */ | |
24 | ssize_t | |
25 | pread64 (int fd, void *buf, size_t nbytes, off64_t offset) | |
28f540f4 | 26 | { |
dfd2257a UD |
27 | if (nbytes == 0) |
28 | return 0; | |
29 | if (fd < 0) | |
30 | { | |
31 | __set_errno (EBADF); | |
32 | return -1; | |
33 | } | |
34 | if (buf == NULL || offset < 0) | |
28f540f4 | 35 | { |
c4029823 | 36 | __set_errno (EINVAL); |
28f540f4 RM |
37 | return -1; |
38 | } | |
39 | ||
c4029823 | 40 | __set_errno (ENOSYS); |
28f540f4 RM |
41 | return -1; |
42 | } | |
dfd2257a | 43 | stub_warning (pread64) |
f2ea0f5b | 44 | #include <stub-tag.h> |