glibc/sysdeps/unix/sysv/linux/ftruncate.c

36 lines
1.2 KiB
C

/* Copyright (C) 2016-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<https://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <sysdep.h>
#include <errno.h>
#ifndef __OFF_T_MATCHES_OFF64_T
/* Truncate the file FD refers to LENGTH bytes. */
int
__ftruncate (int fd, off_t length)
{
# ifndef __NR_ftruncate
return INLINE_SYSCALL_CALL (ftruncate64, fd,
__ALIGNMENT_ARG SYSCALL_LL (length));
# else
return INLINE_SYSCALL_CALL (ftruncate, fd, length);
# endif
}
weak_alias (__ftruncate, ftruncate)
#endif