1 | /* |
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2 | * IMFS_create_node() |
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3 | * |
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4 | * Routine to create a new in memory file system node. |
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5 | * |
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6 | * COPYRIGHT (c) 1989-1998. |
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7 | * On-Line Applications Research Corporation (OAR). |
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8 | * Copyright assigned to U.S. Government, 1994. |
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9 | * |
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10 | * The license and distribution terms for this file may be |
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11 | * found in the file LICENSE in this distribution or at |
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12 | * http://www.OARcorp.com/rtems/license.html. |
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13 | * |
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14 | * $Id$ |
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15 | */ |
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16 | |
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17 | #include <assert.h> |
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18 | #include <stdlib.h> |
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19 | #include <string.h> |
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20 | #include "imfs.h" |
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21 | #include "libio_.h" |
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22 | |
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23 | IMFS_jnode_t *IMFS_create_node( |
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24 | rtems_filesystem_location_info_t *parent_loc, |
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25 | IMFS_jnode_types_t type, |
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26 | char *name, |
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27 | mode_t mode, |
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28 | IMFS_types_union *info |
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29 | ) |
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30 | { |
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31 | IMFS_jnode_t *node; |
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32 | struct timeval tv; |
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33 | IMFS_jnode_t *parent = NULL; |
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34 | IMFS_fs_info_t *fs_info; |
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35 | char *sym_name; |
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36 | |
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37 | if ( parent_loc != NULL ) |
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38 | parent = parent_loc->node_access; |
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39 | |
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40 | /* |
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41 | * Allocate an IMFS jnode |
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42 | */ |
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43 | |
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44 | node = calloc( 1, sizeof( IMFS_jnode_t ) ); |
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45 | if ( !node ) |
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46 | return NULL; |
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47 | |
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48 | /* |
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49 | * Fill in the basic information |
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50 | */ |
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51 | |
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52 | node->st_nlink = 1; |
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53 | node->type = type; |
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54 | strncpy( node->name, name, NAME_MAX ); |
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55 | |
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56 | /* |
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57 | * Fill in the mode and permission information for the jnode structure. |
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58 | */ |
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59 | |
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60 | node->st_mode = mode & ~rtems_filesystem_umask; |
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61 | |
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62 | #if defined(RTEMS_POSIX_API) |
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63 | node->st_uid = geteuid(); |
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64 | node->st_gid = getegid(); |
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65 | #else |
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66 | node->st_uid = 0; |
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67 | node->st_gid = 0; |
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68 | #endif |
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69 | |
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70 | /* |
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71 | * Now set all the times. |
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72 | */ |
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73 | |
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74 | gettimeofday( &tv, 0 ); |
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75 | |
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76 | node->st_atime = (time_t) tv.tv_sec; |
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77 | node->st_mtime = (time_t) tv.tv_sec; |
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78 | node->st_ctime = (time_t) tv.tv_sec; |
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79 | |
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80 | /* |
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81 | * Set the type specific information |
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82 | */ |
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83 | |
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84 | switch (type) { |
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85 | case IMFS_DIRECTORY: |
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86 | Chain_Initialize_empty(&node->info.directory.Entries); |
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87 | break; |
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88 | |
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89 | case IMFS_HARD_LINK: |
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90 | node->info.hard_link.link_node = info->hard_link.link_node; |
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91 | break; |
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92 | |
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93 | case IMFS_SYM_LINK: |
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94 | sym_name = calloc( 1, strlen( info->sym_link.name ) + 1 ); |
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95 | strcpy( sym_name, info->sym_link.name ); |
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96 | node->info.sym_link.name = sym_name; |
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97 | break; |
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98 | |
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99 | case IMFS_DEVICE: |
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100 | node->info.device.major = info->device.major; |
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101 | node->info.device.minor = info->device.minor; |
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102 | break; |
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103 | |
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104 | case IMFS_MEMORY_FILE: |
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105 | node->info.file.size = 0; |
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106 | node->info.file.indirect = 0; |
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107 | node->info.file.doubly_indirect = 0; |
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108 | node->info.file.triply_indirect = 0; |
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109 | break; |
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110 | |
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111 | default: |
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112 | assert(0); |
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113 | break; |
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114 | } |
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115 | |
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116 | /* |
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117 | * If this node has a parent, then put it in that directory list. |
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118 | */ |
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119 | |
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120 | if ( parent ) { |
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121 | Chain_Append( &parent->info.directory.Entries, &node->Node ); |
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122 | node->Parent = parent; |
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123 | |
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124 | fs_info = parent_loc->mt_entry->fs_info; |
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125 | node->st_ino = ++fs_info->ino_count; |
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126 | } |
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127 | |
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128 | |
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129 | return node; |
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130 | } |
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