1 /* Copyright (C) 1997-2022 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 <sys/types.h>
19 #include <errno.h>
20 #include <unistd.h>
21
22 /* Truncate the file referenced by FD to LENGTH bytes. */
23 int
__ftruncate64(int fd,off64_t length)24 __ftruncate64 (int fd, off64_t length)
25 {
26 if ((off_t) length != length)
27 {
28 __set_errno (EINVAL);
29 return -1;
30 }
31 return __ftruncate (fd, (off_t) length);
32 }
33 weak_alias (__ftruncate64, ftruncate64)
34