source: rtems/c/src/lib/libc/ftruncate.c @ b449267

4.104.114.84.95
Last change on this file since b449267 was a02224e, checked in by Joel Sherrill <joel.sherrill@…>, on 01/04/02 at 18:29:37

2002-01-04 Ralf Corsepius <corsepiu@…>

  • include/rtems/libio_.h: Remove set_errno_and_return_minus_one.
  • libc/cfsetispeed.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/cfsetospeed.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/chdir.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/chmod.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/chown.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/chroot.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/closedir.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/eval.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/fchdir.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/fchmod.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/fdatasync.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/fpathconf.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/fstat.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/fsync.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/ftruncate.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/getdents.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/ioctl.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/link.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/lseek.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/mknod.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/open.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/read.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/readlink.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/rmdir.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/stat.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/symlink.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/tcsetattr.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/telldir.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/ttyname.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/ttyname_r.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/unlink.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/unmount.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/utime.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • libc/write.c: Include <rtems/seterr.h>. Apply rtems_set_errno_and_return_minus_one.
  • Property mode set to 100644
File size: 1.2 KB
Line 
1/*
2 *  ftruncate() - Truncate a File to the Specified Length
3 *
4 *  COPYRIGHT (c) 1989-1999.
5 *  On-Line Applications Research Corporation (OAR).
6 *
7 *  The license and distribution terms for this file may be
8 *  found in the file LICENSE in this distribution or at
9 *  http://www.OARcorp.com/rtems/license.html.
10 *
11 *  $Id$
12 */
13
14#if HAVE_CONFIG_H
15#include "config.h"
16#endif
17
18#include <unistd.h>
19#include <errno.h>
20
21#include <rtems/libio_.h>
22#include <rtems/seterr.h>
23
24int ftruncate(
25  int     fd,
26  off_t   length
27)
28{
29  rtems_libio_t                    *iop;
30  rtems_filesystem_location_info_t  loc;
31 
32  rtems_libio_check_fd( fd );
33  iop = rtems_libio_iop( fd );
34  rtems_libio_check_is_open(iop);
35
36  /*
37   *  Now process the ftruncate() request.
38   */
39 
40  /*
41   *  Make sure we are not working on a directory
42   */
43
44  loc = iop->pathinfo;
45  if ( !loc.ops->node_type_h )
46    rtems_set_errno_and_return_minus_one( ENOTSUP );
47   
48  if ( (*loc.ops->node_type_h)( &loc ) == RTEMS_FILESYSTEM_DIRECTORY )
49    rtems_set_errno_and_return_minus_one( EISDIR );
50
51  rtems_libio_check_permissions( iop, LIBIO_FLAGS_WRITE );
52
53  if ( !iop->handlers->ftruncate_h )
54    rtems_set_errno_and_return_minus_one( ENOTSUP );
55
56  return (*iop->handlers->ftruncate_h)( iop, length );
57}
58 
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