source: rtems/c/src/lib/libc/ftruncate.c @ 2e0fd427

4.104.114.84.95
Last change on this file since 2e0fd427 was 3ba74c73, checked in by Joel Sherrill <joel.sherrill@…>, on 11/01/00 at 21:08:14

2000-11-01 Joel Sherrill <joel@…>

  • include/Makefile.am, include/rtems/libio_.h, libc/Makefile.am, libc/assoc.c, libc/assocnamebad.c, libc/base_fs.c, libc/cfsetispeed.c, libc/cfsetospeed.c, libc/chdir.c, libc/chmod.c, libc/chown.c, libc/close.c, libc/closedir.c, libc/dup2.c, libc/error.c, libc/eval.c, libc/fchdir.c, libc/fchmod.c, libc/fcntl.c, libc/fdatasync.c, libc/fpathconf.c, libc/fstat.c, libc/fsync.c, libc/ftruncate.c, libc/getdents.c, libc/ioctl.c, libc/libio.c, libc/libio_sockets.c, libc/link.c, libc/lseek.c, libc/malloc.c, libc/mallocfreespace.c, libc/mknod.c, libc/mount.c, libc/newlibc.c, libc/no_libc.c, libc/open.c, libc/read.c, libc/readlink.c, libc/rmdir.c, libc/stat.c, libc/symlink.c, libc/tcsetattr.c, libc/telldir.c, libc/ttyname.c, libc/ttyname_r.c, libc/umask.c, libc/unlink.c, libc/unmount.c, libc/utime.c, libc/write.c: assoc.h, error.h, libio_.h, libio.h, and libcsupport.h moved from libc to lib/include/rtems and now must be referenced as <rtems/XXX.h>.
  • include/rtems/Makefile.am, include/rtems/.cvsignore: New file.
  • include/rtems/assoc.h, include/rtems/error.h, include/rtems/libcsupport.h, include/rtems/libio.h, include/rtems/libio_.h: New/moved files.
  • Property mode set to 100644
File size: 1.1 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#include <unistd.h>
15#include <errno.h>
16
17#include <rtems/libio_.h>
18
19int ftruncate(
20  int     fd,
21  off_t   length
22)
23{
24  rtems_libio_t                    *iop;
25  rtems_filesystem_location_info_t  loc;
26 
27  rtems_libio_check_fd( fd );
28  iop = rtems_libio_iop( fd );
29  rtems_libio_check_is_open(iop);
30
31  /*
32   *  Now process the ftruncate() request.
33   */
34 
35  /*
36   *  Make sure we are not working on a directory
37   */
38
39  loc = iop->pathinfo;
40  if ( !loc.ops->node_type_h )
41    set_errno_and_return_minus_one( ENOTSUP );
42   
43  if ( (*loc.ops->node_type_h)( &loc ) == RTEMS_FILESYSTEM_DIRECTORY )
44    set_errno_and_return_minus_one( EISDIR );
45
46  rtems_libio_check_permissions( iop, LIBIO_FLAGS_WRITE );
47
48  if ( !iop->handlers->ftruncate_h )
49    set_errno_and_return_minus_one( ENOTSUP );
50
51  return (*iop->handlers->ftruncate_h)( iop, length );
52}
53 
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