1 | /* Copyright (C) 1991-2022 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
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 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <errno.h> |
19 | #include <fcntl.h> |
20 | #include <sys/types.h> |
21 | #include <unistd.h> |
22 | #include <hurd.h> |
23 | |
24 | /* Truncate FILE_NAME to LENGTH bytes. */ |
25 | int |
26 | __truncate64 (const char *file_name, off64_t length) |
27 | { |
28 | error_t err; |
29 | file_t file = __file_name_lookup (file_name, O_WRITE, 0); |
30 | |
31 | if (file == MACH_PORT_NULL) |
32 | return -1; |
33 | |
34 | err = __file_set_size (file, length); |
35 | __mach_port_deallocate (__mach_task_self (), file); |
36 | |
37 | if (err) |
38 | return __hurd_fail (err); |
39 | return 0; |
40 | } |
41 | |
42 | weak_alias (__truncate64, truncate64) |
43 | |