1 | /* Read block from given position in file without changing file pointer. |
2 | Hurd version. |
3 | Copyright (C) 2001-2024 Free Software Foundation, Inc. |
4 | This file is part of the GNU C Library. |
5 | |
6 | The GNU C Library is free software; you can redistribute it and/or |
7 | modify it under the terms of the GNU Lesser General Public |
8 | License as published by the Free Software Foundation; either |
9 | version 2.1 of the License, or (at your option) any later version. |
10 | |
11 | The GNU C Library is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | Lesser General Public License for more details. |
15 | |
16 | You should have received a copy of the GNU Lesser General Public |
17 | License along with the GNU C Library; if not, see |
18 | <https://www.gnu.org/licenses/>. */ |
19 | |
20 | #include <errno.h> |
21 | #include <unistd.h> |
22 | #include <hurd/fd.h> |
23 | #include <not-cancel.h> |
24 | |
25 | ssize_t |
26 | __pread64_nocancel (int fd, void *buf, size_t nbytes, off64_t offset) |
27 | { |
28 | error_t err; |
29 | if (offset < 0) |
30 | err = EINVAL; |
31 | else |
32 | err = HURD_FD_USE (fd, _hurd_fd_read (descriptor, buf, &nbytes, offset)); |
33 | return err ? __hurd_dfail (fd, err) : nbytes; |
34 | } |
35 | libc_hidden_weak (__pread64_nocancel) |
36 | |