forked from Imagelibrary/rtems
80cf60efec
Use the following variant which was already used by most source files: #ifdef HAVE_CONFIG_H #include "config.h" #endif
43 lines
781 B
C
43 lines
781 B
C
/**
|
|
* @file
|
|
*
|
|
* @brief Truncate a File to the Specified Length
|
|
* @ingroup libcsupport
|
|
*/
|
|
|
|
/*
|
|
* COPYRIGHT (c) 1989-1999.
|
|
* On-Line Applications Research Corporation (OAR).
|
|
*
|
|
* The license and distribution terms for this file may be
|
|
* found in the file LICENSE in this distribution or at
|
|
* http://www.rtems.org/license/LICENSE.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <unistd.h>
|
|
|
|
#include <rtems/libio_.h>
|
|
|
|
int ftruncate( int fd, off_t length )
|
|
{
|
|
int rv = 0;
|
|
|
|
if ( length >= 0 ) {
|
|
rtems_libio_t *iop;
|
|
|
|
LIBIO_GET_IOP_WITH_ACCESS( fd, iop, LIBIO_FLAGS_WRITE, EINVAL );
|
|
|
|
rv = (*iop->pathinfo.handlers->ftruncate_h)( iop, length );
|
|
rtems_libio_iop_drop( iop );
|
|
} else {
|
|
errno = EINVAL;
|
|
rv = -1;
|
|
}
|
|
|
|
return rv;
|
|
}
|