source: rtems/cpukit/libfs/src/imfs/imfs_mknod.c @ 8851c0a

4.11
Last change on this file since 8851c0a was 8851c0a, checked in by Joel Sherrill <joel.sherrill@…>, on Aug 2, 2010 at 6:27:23 PM

2010-08-02 Joel Sherrill <joel.sherrill@…>

  • libfs/src/imfs/imfs_creat.c, libfs/src/imfs/imfs_eval.c, libfs/src/imfs/imfs_mknod.c, libfs/src/imfs/imfs_readlink.c, libfs/src/pipe/fifo.c: Clean up for coverage improvements and formatting.
  • Property mode set to 100644
File size: 2.0 KB
Line 
1/*
2 *  IMFS_mknod
3 *
4 *  Routine to create a node in the IMFS file system.
5 *
6 *  COPYRIGHT (c) 1989-2010.
7 *  On-Line Applications Research Corporation (OAR).
8 *
9 *  The license and distribution terms for this file may be
10 *  found in the file LICENSE in this distribution or at
11 *  http://www.rtems.com/license/LICENSE.
12 *
13 *  $Id$
14 */
15
16#if HAVE_CONFIG_H
17#include "config.h"
18#endif
19
20#include <sys/types.h>
21#include <sys/stat.h>
22#include <fcntl.h>
23#include <unistd.h>
24#include <errno.h>
25#include <stdlib.h>
26
27#include "imfs.h"
28#include <rtems/libio_.h>
29#include <rtems/seterr.h>
30
31int IMFS_mknod(
32  const char                        *token,      /* IN */
33  mode_t                             mode,       /* IN */
34  dev_t                              dev,        /* IN */
35  rtems_filesystem_location_info_t  *pathloc     /* IN/OUT */
36)
37{
38  IMFS_token_types   type = 0;
39  IMFS_jnode_t      *new_node;
40  int                result;
41  char               new_name[ IMFS_NAME_MAX + 1 ];
42  IMFS_types_union   info;
43
44  IMFS_get_token( token, strlen( token ), new_name, &result );
45
46  /*
47   *  Figure out what type of IMFS node this is.
48   */
49  if ( S_ISDIR(mode) )
50    type = IMFS_DIRECTORY;
51  else if ( S_ISREG(mode) )
52    type = IMFS_MEMORY_FILE;
53  else if ( S_ISBLK(mode) || S_ISCHR(mode) ) {
54    type = IMFS_DEVICE;
55    rtems_filesystem_split_dev_t( dev, info.device.major, info.device.minor );
56  } else if (S_ISFIFO(mode))
57    type = IMFS_FIFO;
58  else 
59    IMFS_assert( 0 );
60
61  /*
62   *  Allocate and fill in an IMFS jnode
63   *
64   *  NOTE: Coverity Id 21 reports this as a leak.
65   *        While technically not a leak, it indicated that IMFS_create_node
66   *        was ONLY passed a NULL when we created the root node.  We
67   *        added a new IMFS_create_root_node() so this path no longer
68   *        existed.  The result was simpler code which should not have
69   *        this path.
70   */
71  new_node = IMFS_create_node( pathloc, type, new_name, mode, &info );
72  if ( !new_node )
73    rtems_set_errno_and_return_minus_one( ENOMEM );
74
75  return 0;
76}
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