source: rtems/c/src/lib/libc/imfs_creat.c @ 400c552

4.104.114.84.95
Last change on this file since 400c552 was 08311cc3, checked in by Joel Sherrill <joel.sherrill@…>, on 11/17/99 at 17:51:34

Updated copyright notice.

  • Property mode set to 100644
File size: 2.8 KB
Line 
1/*
2 *  IMFS_create_node()
3 *
4 *  Routine to create a new in memory file system node.
5 *
6 *  COPYRIGHT (c) 1989-1999.
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.OARcorp.com/rtems/license.html.
12 *
13 *  $Id$
14 */
15
16#include <assert.h>
17#include <stdlib.h>
18#include <string.h>
19#include "imfs.h"
20#include "libio_.h"
21
22IMFS_jnode_t *IMFS_create_node(
23  rtems_filesystem_location_info_t  *parent_loc,
24  IMFS_jnode_types_t                 type,
25  char                              *name,
26  mode_t                             mode,
27  IMFS_types_union                  *info
28)
29{
30  IMFS_jnode_t        *node;
31  struct timeval       tv;
32  IMFS_jnode_t        *parent = NULL;
33  IMFS_fs_info_t      *fs_info;
34  char                *sym_name;
35
36  if ( parent_loc != NULL )
37    parent = parent_loc->node_access;
38
39  /*
40   *  Allocate an IMFS jnode
41   */
42
43  node = calloc( 1, sizeof( IMFS_jnode_t ) );
44  if ( !node )
45    return NULL;
46
47  /*
48   *  Fill in the basic information
49   */
50
51  node->st_nlink = 1;
52  node->type     = type;
53  strncpy( node->name, name, IMFS_NAME_MAX );
54
55  /*
56   *  Fill in the mode and permission information for the jnode structure.
57   */
58
59  node->st_mode = mode & ~rtems_filesystem_umask;
60 
61#if defined(RTEMS_POSIX_API)
62  node->st_uid = geteuid();
63  node->st_gid = getegid();
64#else
65  node->st_uid = 0;
66  node->st_gid = 0;
67#endif
68
69  /*
70   *  Now set all the times.
71   */
72
73  gettimeofday( &tv, 0 );
74
75  node->st_atime  = (time_t) tv.tv_sec;
76  node->st_mtime  = (time_t) tv.tv_sec;
77  node->st_ctime  = (time_t) tv.tv_sec;
78
79  /*
80   *  Set the type specific information
81   */
82
83  switch (type) {
84    case IMFS_DIRECTORY:
85      Chain_Initialize_empty(&node->info.directory.Entries);
86      break;
87
88    case IMFS_HARD_LINK:
89      node->info.hard_link.link_node = info->hard_link.link_node;
90      break;
91
92    case IMFS_SYM_LINK:
93      sym_name = calloc( 1, strlen( info->sym_link.name ) + 1 );
94      strcpy( sym_name, info->sym_link.name );
95      node->info.sym_link.name = sym_name;
96      break;
97
98    case IMFS_DEVICE:
99      node->info.device.major = info->device.major;
100      node->info.device.minor = info->device.minor;
101      break;
102
103    case IMFS_MEMORY_FILE:
104      node->info.file.size            = 0;
105      node->info.file.indirect        = 0;
106      node->info.file.doubly_indirect = 0;
107      node->info.file.triply_indirect = 0;
108      break;
109
110    default:
111      assert(0);
112      break;
113  }
114
115  /*
116   *  If this node has a parent, then put it in that directory list.
117   */
118
119  if ( parent ) {
120    Chain_Append( &parent->info.directory.Entries, &node->Node );
121    node->Parent = parent;
122
123    fs_info = parent_loc->mt_entry->fs_info;
124    node->st_ino = ++fs_info->ino_count;
125  }
126
127
128  return node;
129}
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