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d614a753 | 1 | /* Copyright (C) 1991-2020 Free Software Foundation, Inc. |
21d58b2a JW |
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 | |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
21d58b2a JW |
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) |