38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
/* ftruncate for SVR4 using the fcntl F_FREESP command.
|
|
Copyright (C) 1995 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <ansidecl.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
|
|
/* Truncate the file FD refers to to LENGTH bytes. */
|
|
int
|
|
DEFUN(ftruncate, (fd, length),
|
|
int fd AND off_t length)
|
|
{
|
|
struct flock fl;
|
|
|
|
memset (&fl, 0, sizeof fl);
|
|
fl.l_type = F_WRLCK;
|
|
fl.l_start = length;
|
|
return fcntl (fd, F_FREESP, &fl);
|
|
}
|