Add comment to clarify how the test can fail
[glibc.git] / misc / truncate64.c
blobd1bb4ade2eabae83de9feb57f3834ec0ee06c6e1
1 /* Copyright (C) 1997-2015 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
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 <http://www.gnu.org/licenses/>. */
18 #include <sys/types.h>
19 #include <errno.h>
20 #include <unistd.h>
22 /* Truncate PATH to LENGTH bytes. */
23 int
24 truncate64 (path, length)
25 const char *path;
26 off64_t length;
28 if ((off_t) length != length)
30 __set_errno (EINVAL);
31 return -1;
33 return __truncate (path, (off_t) length);