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annotate packages/io/fileio/current/tests/testfs.c @ 115:6ed91473a1cd ecos-sw-2000-08-21

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Merge from eCos master repository on 2000-08-21-22:40:54-BST
author jlarmour
date Fri, 25 Aug 2000 17:32:38 +0000
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children e0c0827131d1
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115
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1 //==========================================================================
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2 //
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3 // testfs.c
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4 //
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5 // Test file system
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6 //
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7 //==========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //==========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): nickg
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35 // Contributors: nickg
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36 // Date: 2000-05-25
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37 // Purpose: Test file system
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38 // Description: This is a very simple implementation of a RAM file system.
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39 // This implementation is not "industrial strength" or suitable
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40 // for production use, it is too wasteful of both memory and time.
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41 // Its primary purpose is to support testing of the fileio
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42 // infrastructure and API. It can, however, serve as a model
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43 // and source of code fragments for the implementation
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44 // of further filesystems.
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45 //
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46 //
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47 //####DESCRIPTIONEND####
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48 //
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49 //==========================================================================
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50
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51 #include <pkgconf/hal.h>
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52 #include <pkgconf/kernel.h>
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53 #include <pkgconf/io_fileio.h>
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54
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55 #include <cyg/kernel/ktypes.h> // base kernel types
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56 #include <cyg/infra/cyg_trac.h> // tracing macros
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57 #include <cyg/infra/cyg_ass.h> // assertion macros
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58
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59 #include <unistd.h>
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60 #include <fcntl.h>
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61 #include <sys/stat.h>
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62 #include <errno.h>
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63 #include <dirent.h>
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64
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65 #include <cyg/fileio/fileio.h>
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66
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67 #include <cyg/kernel/kapi.h>
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68 #include <cyg/infra/diag.h>
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69
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70 //==========================================================================
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71 // Configuration parameters
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72
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73 #define TESTFS_NFILE 10 // Max number of files/directories
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74 #define TESTFS_NBLOCK 20 // Number of data blocks available
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75 #define TESTFS_BLOCKSIZE 128 // Bytes stored per block
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76 #define TESTFS_FILEBLOCKS 8 // Max blocks per file
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77 #define TESTFS_NAMESIZE 32 // Length of file names in bytes
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78
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79
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80 // Maximum file size is blocksize*blocks
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81 #define TESTFS_FILESIZE_MAX (TESTFS_BLOCKSIZE*TESTFS_FILEBLOCKS)
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82
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83 //==========================================================================
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84 // Data structures
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85
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86 struct testfs_node;
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87 typedef struct testfs_node testfs_node;
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88
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89 struct testfs_block;
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90 typedef struct testfs_block testfs_block;
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91
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92
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93 struct testfs_node
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94 {
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95 testfs_node *next; // next node in list
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96 testfs_node *parent; // Back pointer to parent
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97 int refcnt; // reference count
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98 char name[TESTFS_NAMESIZE]; // file name
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99 struct stat status; // status data
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100 union
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101 {
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102 struct
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103 {
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104 testfs_block *data[TESTFS_FILEBLOCKS]; // array of blocks
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105 } file;
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106
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107 struct
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108 {
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109 testfs_node *nodes[TESTFS_FILEBLOCKS]; // array of nodes
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110 } dir;
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111 } u;
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112 };
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113
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114 struct testfs_block
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115 {
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116 union
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117 {
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118 testfs_block *next; // next block in free list
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119 testfs_node *file; // back pointer to file
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120 } u;
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121 off_t pos; // position in file of first byte
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122 size_t size; // number of bytes in buffer
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123 char data[TESTFS_BLOCKSIZE]; // the data
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124 };
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125
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126 //==========================================================================
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127 // Local data
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128
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129 // Array of nodes
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130 static testfs_node node[TESTFS_NFILE];
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131
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132 // node free list.
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133 static testfs_node *free_node = NULL;
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134
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135 // Array of data blocks
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136 static testfs_block block[TESTFS_NBLOCK];
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137
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138 // block free list.
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139 static testfs_block *free_block = NULL;
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140
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141 // Init flag
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142 cyg_bool testfs_initialized = false;
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143
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144 //==========================================================================
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145 // Forward definitions
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146
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147 // Filesystem operations
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148 static int testfs_mount ( cyg_fstab_entry *fste, cyg_mtab_entry *mte );
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149 static int testfs_umount ( cyg_mtab_entry *mte );
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150 static int testfs_open ( cyg_mtab_entry *mte, cyg_dir dir, const char *name,
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151 int mode, cyg_file *fte );
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152 static int testfs_unlink ( cyg_mtab_entry *mte, cyg_dir dir, const char *name );
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153 static int testfs_mkdir ( cyg_mtab_entry *mte, cyg_dir dir, const char *name );
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154 static int testfs_rmdir ( cyg_mtab_entry *mte, cyg_dir dir, const char *name );
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155 static int testfs_rename ( cyg_mtab_entry *mte, cyg_dir dir1, const char *name1,
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156 cyg_dir dir2, const char *name2 );
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157 static int testfs_link ( cyg_mtab_entry *mte, cyg_dir dir1, const char *name1,
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158 cyg_dir dir2, const char *name2, int type );
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159 static int testfs_opendir ( cyg_mtab_entry *mte, cyg_dir dir, const char *name,
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160 cyg_file *fte );
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161 static int testfs_chdir ( cyg_mtab_entry *mte, cyg_dir dir, const char *name,
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162 cyg_dir *dir_out );
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163 static int testfs_stat ( cyg_mtab_entry *mte, cyg_dir dir, const char *name,
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164 struct stat *buf);
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165 static int testfs_getinfo ( cyg_mtab_entry *mte, cyg_dir dir, const char *name,
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166 int key, void *buf, int len );
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167 static int testfs_setinfo ( cyg_mtab_entry *mte, cyg_dir dir, const char *name,
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168 int key, void *buf, int len );
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169
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170 // File operations
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171 static int testfs_fo_read (struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
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172 static int testfs_fo_write (struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
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173 static int testfs_fo_lseek (struct CYG_FILE_TAG *fp, off_t *pos, int whence );
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174 static int testfs_fo_ioctl (struct CYG_FILE_TAG *fp, CYG_ADDRWORD com,
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175 CYG_ADDRWORD data);
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176 //static int testfs_fo_select (struct CYG_FILE_TAG *fp, int which, CYG_ADDRWORD info);
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177 static int testfs_fo_fsync (struct CYG_FILE_TAG *fp, int mode );
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178 static int testfs_fo_close (struct CYG_FILE_TAG *fp);
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179 static int testfs_fo_fstat (struct CYG_FILE_TAG *fp, struct stat *buf );
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180 static int testfs_fo_getinfo (struct CYG_FILE_TAG *fp, int key, void *buf, int len );
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181 static int testfs_fo_setinfo (struct CYG_FILE_TAG *fp, int key, void *buf, int len );
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182
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183 // Directory operations
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184 static int testfs_fo_dirread (struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
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185 static int testfs_fo_dirlseek (struct CYG_FILE_TAG *fp, off_t *pos, int whence );
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186
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187 //==========================================================================
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188 // Filesystem table entries
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189
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190 FSTAB_ENTRY( testfs_fste, "testfs", 0,
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191 CYG_SYNCMODE_FILE_FILESYSTEM|CYG_SYNCMODE_IO_FILESYSTEM,
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192 testfs_mount,
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193 testfs_umount,
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194 testfs_open,
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195 testfs_unlink,
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196 testfs_mkdir,
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197 testfs_rmdir,
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198 testfs_rename,
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199 testfs_link,
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200 testfs_opendir,
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201 testfs_chdir,
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202 testfs_stat,
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203 testfs_getinfo,
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204 testfs_setinfo);
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205
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206 MTAB_ENTRY( testfs_mte1,
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207 "/",
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208 "testfs",
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209 "",
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210 0);
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211
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212 #if 0
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213 MTAB_ENTRY( testfs_mte2,
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214 "/ram",
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215 "testfs",
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216 "",
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217 0);
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218 #endif
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219
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220 static cyg_fileops testfs_fileops =
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221 {
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222 testfs_fo_read,
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223 testfs_fo_write,
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224 testfs_fo_lseek,
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225 testfs_fo_ioctl,
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226 cyg_fileio_seltrue,
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227 testfs_fo_fsync,
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228 testfs_fo_close,
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229 testfs_fo_fstat,
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230 testfs_fo_getinfo,
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231 testfs_fo_setinfo
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232 };
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233
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234 static cyg_fileops testfs_dirops =
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235 {
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236 testfs_fo_dirread,
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237 (cyg_fileop_write *)cyg_fileio_enosys,
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238 testfs_fo_dirlseek,
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239 (cyg_fileop_ioctl *)cyg_fileio_enosys,
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240 cyg_fileio_seltrue,
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241 (cyg_fileop_fsync *)cyg_fileio_enosys,
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242 testfs_fo_close,
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243 (cyg_fileop_fstat *)cyg_fileio_enosys,
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244 (cyg_fileop_getinfo *)cyg_fileio_enosys,
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245 (cyg_fileop_setinfo *)cyg_fileio_enosys
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246 };
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247
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248 //==========================================================================
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249 // Support routines
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250
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251 // -------------------------------------------------------------------------
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252 // Local strcmp() and strcpy()
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253
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254 static int strcmp( const char *s1, const char *s2 )
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255 {
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256 while( *s1 == *s2 && *s1 != '\0' && *s2 != '\0' )
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257 s1++, s2++;
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258
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259 return (*s2)-(*s1);
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260 }
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261
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262 static char *strcpy( char *s1, const char *s2 )
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263 {
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264 char *s = s1;
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265 while( (*s1++ = *s2++) != 0);
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266 return s;
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267 }
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268
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269 // -------------------------------------------------------------------------
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270 // Follow a path through the directory structure
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271
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272 static int testfs_find( testfs_node *dir, // dir to start search in
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273 const char *path, // path to follow
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274 testfs_node **found, // return node found
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275 testfs_node **parent, // return last dir searched
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276 char *name, // name fragment buffer
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277 cyg_bool *lastp) // last name in path ?
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278 {
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279 testfs_node *nd = dir;
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280
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281 *lastp = false;
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282 *found = NULL;
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283
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284 while( *path != '\0' )
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285 {
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286 const char *p = path;
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287 char *n = name;
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288 testfs_node *nd1;
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289 int i;
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290
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291 // check nd is a directory
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292 if( !S_ISDIR(nd->status.st_mode) ) return ENOTDIR;
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293
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294 // Isolate the next element of the path name.
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295 while( *p != '\0' && *p != '/' && (n-&name[0]) < TESTFS_NAMESIZE)
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296 *n++ = *p++;
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297
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298 if( (n-&name[0]) >= TESTFS_NAMESIZE )
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299 return ENAMETOOLONG;
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300
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301 // Step path on past the separator
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302 // If this is the last name element in the path,
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303 // set *lastp to indicate this.
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304 if( *(path=p) == '/' ) path++;
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305 else *lastp = true;
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306
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307 // teminate name
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308 *n = '\0';
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309
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310 // name now contains the next path element, search the node
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311 // in nd for it.
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312
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313 *parent = nd;
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314 nd1 = NULL;
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315
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316 for( i = 0; i < TESTFS_FILEBLOCKS; i++ )
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317 {
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318 testfs_node *n = nd->u.dir.nodes[i];
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319 if( n == NULL )
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320 continue;
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321
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322 if( strcmp( name, n->name ) == 0 )
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323 {
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324 nd1 = n;
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325 break;
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326 }
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327 }
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328
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329 if( nd1 == NULL ) return ENOENT;
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330
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331 nd = nd1;
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332 }
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333
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334 // Return what we have found
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335 *found = nd;
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336
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337 return ENOERR;
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338 }
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339
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340 // -------------------------------------------------------------------------
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341 // Get current time since epoch
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342
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343 static time_t testfs_time(void)
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344 {
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345 // FIXME: !!!!Temporary!!!!
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346 return cyg_current_time();
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347 }
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348
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349 // -------------------------------------------------------------------------
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350
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351 static int testfs_delnode( testfs_node *nd )
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352 {
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353
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354 testfs_node *parent;
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355 int i;
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356
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357 // Non-unitary ref count means this node is either open
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358 // or is a dir with entries in it.
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359 if( nd->refcnt > 1 )
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360 return EBUSY;
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361
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362 // Remove from parent's node list.
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363
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364 parent = nd->parent;
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365
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366 for( i = 0; i < TESTFS_FILEBLOCKS; i++ )
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367 if( parent->u.dir.nodes[i] == nd )
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368 {
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369 parent->u.dir.nodes[i] = NULL;
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370 break;
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371 }
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372
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373 parent->refcnt--;
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374
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375 if( S_ISREG(nd->status.st_mode) )
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376 {
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377 // for a file, return blocks to free list
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378 for( i = 0; i < TESTFS_FILEBLOCKS; i++ )
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379 {
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380 testfs_block *b = nd->u.file.data[i];
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381 if( b != NULL )
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382 {
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383 b->u.next = free_block;
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384 b->pos = -1;
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385 free_block = b;
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386 }
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387 }
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388 }
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389
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390 // and finally return nd to free node list
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391
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392 nd->next = free_node;
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393 nd->refcnt = -1;
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394 free_node = nd;
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395
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396 return ENOERR;
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397 }
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398
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399 //==========================================================================
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400 // Filesystem operations
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401
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402 // -------------------------------------------------------------------------
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403
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404 static int testfs_mount ( cyg_fstab_entry *fste, cyg_mtab_entry *mte )
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405 {
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406 testfs_node *root;
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407 int i;
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408
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409 if( !testfs_initialized )
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410 {
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411 int i;
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412
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413 for( i = 0; i < TESTFS_NFILE; i++ )
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414 {
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415 node[i].next = free_node;
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416 node[i].refcnt = -1;
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417 free_node = &node[i];
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418 }
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419
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420 for( i = 0; i < TESTFS_NBLOCK; i++ )
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421 {
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422 block[i].u.next = free_block;
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423 block[i].pos = -1;
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424 free_block = &block[i];
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425 }
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426
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427 testfs_initialized = true;
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428 }
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429
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430 // Allocate a node to be the root of this filesystem and
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431 // initialize it.
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432
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433 root = free_node;
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diff changeset
434
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435 if( root == NULL ) return ENOSPC;
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diff changeset
436
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437 free_node = root->next;
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diff changeset
438
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439 root->next = root; // form circular list
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440 root->parent = root; // I'm my own parent!
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441 root->refcnt = 1; // don't want to ever lose root
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442 strcpy( root->name, "root");
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443 root->status.st_mode = __stat_mode_DIR;
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444 root->status.st_ino = root-&node[0];
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diff changeset
445 root->status.st_dev = 0;
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446 root->status.st_nlink = 1;
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447 root->status.st_uid = 0;
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448 root->status.st_gid = 0;
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449 root->status.st_size = 0;
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450 root->status.st_atime = testfs_time();
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451 root->status.st_mtime = testfs_time();
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diff changeset
452 root->status.st_ctime = testfs_time();
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diff changeset
453
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454 for( i = 0; i < TESTFS_FILEBLOCKS; i++ )
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455 root->u.dir.nodes[i] = NULL;
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456
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457 mte->root = (cyg_dir)root;
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diff changeset
458
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459 return 0;
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460 }
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461
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462 // -------------------------------------------------------------------------
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463
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464 static int testfs_umount ( cyg_mtab_entry *mte )
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465 {
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466 testfs_node *root = (testfs_node *)mte->root;
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467
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468 // Non-empty filesystem, do not unmount
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469 if( root->refcnt != 1 )
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470 return EBUSY;
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471
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472 // Otherwise just return it to the free pool
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473 root->next = free_node;
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474 root->refcnt = -1;
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475 free_node = root;
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diff changeset
476
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477 // Clear root pointer
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478 mte->root = CYG_DIR_NULL;
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479
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diff changeset
480 // That's all folks.
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481
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482 return ENOERR;
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483 }
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484 // -------------------------------------------------------------------------
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485
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486 static int testfs_open ( cyg_mtab_entry *mte, cyg_dir dir, const char *path,
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487 int mode, cyg_file *file )
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488 {
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489 testfs_node *nd, *parent;
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490 int err;
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491 char name[TESTFS_NAMESIZE];
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492 cyg_bool lastp;
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493
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494 err = testfs_find( (testfs_node *)dir, path, &nd, &parent, name, &lastp );
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495
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496 if( lastp && err == ENOENT && (mode & O_CREAT) )
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497 {
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498 int i;
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499 // No node there, if the O_CREAT bit is set then we must
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500 // create a new one. The parent and name results will have been filled
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501 // in, so we know where to put it.
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diff changeset
502
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503 // first check that there is space for it
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504 for( i = 0; i < TESTFS_FILEBLOCKS; i++ )
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505 if( parent->u.dir.nodes[i] == NULL )
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506 break;
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507
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508 if( i == TESTFS_FILEBLOCKS ) return ENOSPC;
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509
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510 // Allocate a new node
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511 nd = free_node;
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512 if( nd == NULL ) return ENOSPC;
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513 free_node = nd->next;
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514
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515 // Add to directory list
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516 parent->u.dir.nodes[i] = nd;
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diff changeset
517
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518 parent->refcnt++;
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519
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520 // Fill in details
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521 nd->parent = parent;
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522 nd->refcnt = 1; // 1 for directory reference
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523 strcpy( nd->name, name);
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524 nd->status.st_mode = __stat_mode_REG;
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525 nd->status.st_ino = nd-&node[0];
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526 nd->status.st_dev = 0;
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527 nd->status.st_nlink = 1;
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528 nd->status.st_uid = 0;
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529 nd->status.st_gid = 0;
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530 nd->status.st_size = 0;
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diff changeset
531 nd->status.st_atime = testfs_time();
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532 nd->status.st_mtime = testfs_time();
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533 nd->status.st_ctime = testfs_time();
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diff changeset
534
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535 for( i = 0; i < TESTFS_FILEBLOCKS; i++ )
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536 nd->u.file.data[i] = NULL;
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diff changeset
537
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538 err = ENOERR;
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539 }
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diff changeset
540
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diff changeset
541 if( err == ENOERR && (mode & O_TRUNC ) )
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parents:
diff changeset
542 {
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diff changeset
543 // Clean out any blocks in the file...
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diff changeset
544
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diff changeset
545 int i;
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diff changeset
546
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547 for( i = 0; i < TESTFS_FILEBLOCKS; i++ )
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548 {
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549 testfs_block *b = nd->u.file.data[i];
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550 if( b != NULL )
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diff changeset
551 {
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552 b->u.next = free_block;
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diff changeset
553 b->pos = -1;
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diff changeset
554 free_block = b;
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diff changeset
555 nd->u.file.data[i] = NULL;
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diff changeset
556 }
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diff changeset
557 }
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diff changeset
558
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diff changeset
559 nd->status.st_size = 0;
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diff changeset
560 }
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diff changeset
561
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562 if( err != ENOERR ) return err;
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diff changeset
563
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564 if( S_ISDIR(nd->status.st_mode) ) return EISDIR;
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parents:
diff changeset
565
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diff changeset
566 nd->refcnt++; // Count successful open as a ref
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diff changeset
567
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jlarmour
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diff changeset
568 // Initialize the file object
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diff changeset
569
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570 file->f_flag |= mode & CYG_FILE_MODE_MASK;
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diff changeset
571 file->f_type = CYG_FILE_TYPE_FILE;
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diff changeset
572 file->f_ops = &testfs_fileops;
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diff changeset
573 file->f_offset = 0;
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jlarmour
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diff changeset
574 file->f_data = (CYG_ADDRWORD)nd;
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diff changeset
575 file->f_xops = 0;
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576
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577 return ENOERR;
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578 }
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diff changeset
579
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580 // -------------------------------------------------------------------------
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581
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582 static int testfs_unlink ( cyg_mtab_entry *mte, cyg_dir dir, const char *path )
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583 {
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584 testfs_node *nd, *parent;
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585 int err;
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586 char name[TESTFS_NAMESIZE];
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diff changeset
587 cyg_bool lastp;
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588
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589 err = testfs_find( (testfs_node *)dir, path, &nd, &parent, name, &lastp );
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590
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591 if( err != ENOERR ) return err;
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592
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593 // Cannot unlink directories, use rmdir() instead
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594 if( S_ISDIR(nd->status.st_mode) )
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595 return EPERM;
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596
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597 err = testfs_delnode( nd );
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598
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599 return err;
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600 }
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601
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602 // -------------------------------------------------------------------------
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603
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604 static int testfs_mkdir ( cyg_mtab_entry *mte, cyg_dir dir, const char *path )
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605 {
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606
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diff changeset
607 testfs_node *nd, *parent;
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608 int err;
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609 char name[TESTFS_NAMESIZE];
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610 cyg_bool lastp;
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611
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612 err = testfs_find( (testfs_node *)dir, path, &nd, &parent, name, &lastp );
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613
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614 if( lastp && err == ENOENT )
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615 {
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616 int i;
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617 // No node there, create a new one. The parent and name
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618 // results will have been filled in, so we know where to put
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619 // it.
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620
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621 // first check that there is space for it
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622 for( i = 0; i < TESTFS_FILEBLOCKS; i++ )
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623 if( parent->u.dir.nodes[i] == NULL )
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624 break;
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625
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626 if( i == TESTFS_FILEBLOCKS ) return ENOSPC;
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627
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628 // Allocate a new node
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629 nd = free_node;
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630 if( nd == NULL ) return ENOSPC;
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631 free_node = nd->next;
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632
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633 // Add to directory list
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634 parent->u.dir.nodes[i] = nd;
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635
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636 parent->refcnt++;
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637
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638 // Fill in details
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639 nd->parent = parent;
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640 nd->refcnt = 1; // 1 for directory reference
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641 strcpy( nd->name, name);
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642 nd->status.st_mode = __stat_mode_DIR;
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643 nd->status.st_ino = nd-&node[0];
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644 nd->status.st_dev = 0;
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645 nd->status.st_nlink = 1;
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646 nd->status.st_uid = 0;
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647 nd->status.st_gid = 0;
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648 nd->status.st_size = 0;
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649 nd->status.st_atime = testfs_time();
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650 nd->status.st_mtime = testfs_time();
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651 nd->status.st_ctime = testfs_time();
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652
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653 for( i = 0; i < TESTFS_FILEBLOCKS; i++ )
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654 nd->u.dir.nodes[i] = NULL;
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655
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656 err = ENOERR;
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657 }
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658
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659 return err;
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660 }
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661
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662 // -------------------------------------------------------------------------
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663
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664 static int testfs_rmdir ( cyg_mtab_entry *mte, cyg_dir dir, const char *path )
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665 {
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666 testfs_node *nd, *parent;
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667 int err;
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668 char name[TESTFS_NAMESIZE];
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669 cyg_bool lastp;
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670
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671 err = testfs_find( (testfs_node *)dir, path, &nd, &parent, name, &lastp );
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672
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673 if( err != ENOERR ) return err;
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674
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675 // Check that it is a directory
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676 if( !S_ISDIR(nd->status.st_mode) )
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677 return EPERM;
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678
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679 err = testfs_delnode( nd );
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680
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681 return err;
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682 }
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diff changeset
683
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684 // -------------------------------------------------------------------------
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685
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686 static int testfs_rename ( cyg_mtab_entry *mte, cyg_dir dir1, const char *path1,
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687 cyg_dir dir2, const char *path2 )
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688 {
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diff changeset
689 testfs_node *nd1, *parent1;
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690 testfs_node *nd2, *parent2;
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diff changeset
691 int err;
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692 char name1[TESTFS_NAMESIZE];
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diff changeset
693 char name2[TESTFS_NAMESIZE];
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diff changeset
694 cyg_bool lastp;
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diff changeset
695 int i,j;
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diff changeset
696
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697 err = testfs_find( (testfs_node *)dir1, path1, &nd1, &parent1, name1, &lastp );
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diff changeset
698
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diff changeset
699 if( err != ENOERR ) return err;
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diff changeset
700
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701 err = testfs_find( (testfs_node *)dir2, path2, &nd2, &parent2, name2, &lastp );
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diff changeset
702
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703 // Allow through renames to non-existent objects.
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diff changeset
704 if( lastp && err == ENOENT )
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705 err = ENOERR;
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diff changeset
706
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diff changeset
707 if( err != ENOERR ) return err;
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diff changeset
708
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709 // Null rename, just return
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diff changeset
710 if( nd1 == nd2 )
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711 return ENOERR;
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diff changeset
712
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jlarmour
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diff changeset
713
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jlarmour
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diff changeset
714 // First deal with any node that is at the destination
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jlarmour
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diff changeset
715 if( nd2 )
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diff changeset
716 {
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717 // Check that we are renaming like-for-like
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diff changeset
718
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719 if( !S_ISDIR(nd1->status.st_mode) && S_ISDIR(nd2->status.st_mode) )
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jlarmour
parents:
diff changeset
720 return EISDIR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
721
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
722 if( S_ISDIR(nd1->status.st_mode) && !S_ISDIR(nd2->status.st_mode) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
723 return ENOTDIR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
724
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
725 // Now delete the destination node.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
726 err = testfs_delnode( nd2 );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
727 if( err != ENOERR ) return err;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
728 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
729
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
730 // Now we know that there is no clashing node at the destination.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
731 // Move the node over and change its name.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
732
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
733 // first check that there is space for it
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
734 for( i = 0; i < TESTFS_FILEBLOCKS; i++ )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
735 if( parent2->u.dir.nodes[i] == NULL )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
736 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
737
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
738 if( i == TESTFS_FILEBLOCKS ) return ENOSPC;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
739
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
740 // Now remove node from old parent.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
741 for( j = 0; j < TESTFS_FILEBLOCKS; j++ )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
742 if( parent1->u.dir.nodes[j] == nd1 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
743 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
744 parent1->u.dir.nodes[j] = NULL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
745 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
746 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
747
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
748 parent1->refcnt--;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
749
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
750 // Add to directory list
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
751 parent2->u.dir.nodes[i] = nd1;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
752 parent2->refcnt++;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
753 nd1->parent = parent2;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
754
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
755 // And give it a new name.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
756 strcpy( nd1->name, name2 );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
757
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
758 return err;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
759 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
760
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
761 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
762
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
763 static int testfs_link ( cyg_mtab_entry *mte, cyg_dir dir1, const char *path1,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
764 cyg_dir dir2, const char *path2, int type )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
765 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
766 // The data structures of this file system do not support the
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
767 // creation of links.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
768
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
769 return ENOSYS;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
770 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
771
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
772 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
773
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
774 static int testfs_opendir ( cyg_mtab_entry *mte, cyg_dir dir, const char *path,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
775 cyg_file *file )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
776 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
777 testfs_node *nd, *parent;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
778 int err;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
779 char name[TESTFS_NAMESIZE];
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
780 cyg_bool lastp;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
781
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
782 err = testfs_find( (testfs_node *)dir, path, &nd, &parent, name, &lastp );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
783
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
784 if( err != ENOERR ) return err;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
785
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
786 if( !S_ISDIR(nd->status.st_mode) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
787 return ENOTDIR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
788
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
789 nd->refcnt++; // Count successful open as a ref
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
790
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
791 // Initialize the file object
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
792
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
793 file->f_type = CYG_FILE_TYPE_FILE;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
794 file->f_ops = &testfs_dirops;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
795 file->f_offset = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
796 file->f_data = (CYG_ADDRWORD)nd;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
797 file->f_xops = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
798
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
799 return ENOERR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
800 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
801
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
802 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
803
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
804 static int testfs_chdir ( cyg_mtab_entry *mte, cyg_dir dir, const char *path,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
805 cyg_dir *dir_out )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
806 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
807 if( dir_out != NULL )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
808 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
809 // This is a request to get a new directory pointer in
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
810 // *dir_out.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
811
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
812 testfs_node *nd, *parent;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
813 int err;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
814 char name[TESTFS_NAMESIZE];
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
815 cyg_bool lastp;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
816
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
817 err = testfs_find( (testfs_node *)dir, path, &nd, &parent, name, &lastp );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
818
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
819 if( err != ENOERR ) return err;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
820
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
821 if( !S_ISDIR(nd->status.st_mode) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
822 return ENOTDIR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
823
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
824 // Increment ref count to keep this directory in existent
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
825 // while it is the current cdir.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
826 nd->refcnt++;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
827
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
828 // Pass it out
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
829 *dir_out = (cyg_dir)nd;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
830 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
831 else
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
832 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
833 // If no output dir is required, this means that the mte and
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
834 // dir arguments are the current cdir setting and we should
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
835 // forget this fact.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
836
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
837 testfs_node *nd = (testfs_node *)dir;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
838
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
839 // Just decrement reference count.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
840 nd->refcnt--;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
841 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
842
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
843 return ENOERR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
844 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
845
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
846 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
847
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
848 static int testfs_stat ( cyg_mtab_entry *mte, cyg_dir dir, const char *path,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
849 struct stat *buf)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
850 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
851 testfs_node *nd, *parent;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
852 int err;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
853 char name[TESTFS_NAMESIZE];
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
854 cyg_bool lastp;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
855
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
856 err = testfs_find( (testfs_node *)dir, path, &nd, &parent, name, &lastp );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
857
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
858 if( err != ENOERR ) return err;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
859
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
860 *buf = nd->status;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
861
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
862 return err;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
863 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
864
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
865 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
866
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents:
diff changeset
867 static int testfs_getinfo ( cyg_mtab_entry *mte, cyg_dir dir, const char *path,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
868 int key, void *buf, int len )
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jlarmour
parents:
diff changeset
869 {
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jlarmour
parents:
diff changeset
870 return ENOSYS;
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jlarmour
parents:
diff changeset
871 }
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parents:
diff changeset
872
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
873 // -------------------------------------------------------------------------
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jlarmour
parents:
diff changeset
874
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jlarmour
parents:
diff changeset
875 static int testfs_setinfo ( cyg_mtab_entry *mte, cyg_dir dir, const char *path,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents:
diff changeset
876 int key, void *buf, int len )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
877 {
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jlarmour
parents:
diff changeset
878 return ENOSYS;
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jlarmour
parents:
diff changeset
879 }
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jlarmour
parents:
diff changeset
880
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
881
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
882 //==========================================================================
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jlarmour
parents:
diff changeset
883 // File operations
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jlarmour
parents:
diff changeset
884
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jlarmour
parents:
diff changeset
885
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jlarmour
parents:
diff changeset
886 // -------------------------------------------------------------------------
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jlarmour
parents:
diff changeset
887
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jlarmour
parents:
diff changeset
888 static int testfs_fo_read (struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
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parents:
diff changeset
889 {
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jlarmour
parents:
diff changeset
890 testfs_node *nd = (testfs_node *)fp->f_data;
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jlarmour
parents:
diff changeset
891 int i;
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jlarmour
parents:
diff changeset
892 off_t pos = fp->f_offset;
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jlarmour
parents:
diff changeset
893
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jlarmour
parents:
diff changeset
894 for( i = 0; i < uio->uio_iovcnt; i++ )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
895 {
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jlarmour
parents:
diff changeset
896 cyg_iovec *iov = &uio->uio_iov[i];
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jlarmour
parents:
diff changeset
897 char *buf = (char *)iov->iov_base;
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jlarmour
parents:
diff changeset
898 off_t len = iov->iov_len;
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jlarmour
parents:
diff changeset
899
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jlarmour
parents:
diff changeset
900 while( len > 0 && pos < nd->status.st_size )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents:
diff changeset
901 {
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jlarmour
parents:
diff changeset
902 testfs_block *b = nd->u.file.data[pos/TESTFS_BLOCKSIZE];
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jlarmour
parents:
diff changeset
903 off_t l = len;
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jlarmour
parents:
diff changeset
904 off_t bpos = pos%TESTFS_BLOCKSIZE;
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jlarmour
parents:
diff changeset
905
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jlarmour
parents:
diff changeset
906 // If there is no block in that pos, we have reached
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jlarmour
parents:
diff changeset
907 // the end of the file.
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jlarmour
parents:
diff changeset
908 if( b == NULL ) return ENOERR;
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jlarmour
parents:
diff changeset
909
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jlarmour
parents:
diff changeset
910 // adjust size to this block
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jlarmour
parents:
diff changeset
911 if( l > (b->size-bpos) )
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parents:
diff changeset
912 l = (b->size-bpos);
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jlarmour
parents:
diff changeset
913
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
914 // copy data out
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
915 memcpy( buf, &b->data[bpos], l );
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parents:
diff changeset
916
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parents:
diff changeset
917 uio->uio_resid -= l;
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parents:
diff changeset
918 len -= l;
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parents:
diff changeset
919 buf += l;
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parents:
diff changeset
920 pos += l;
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jlarmour
parents:
diff changeset
921
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jlarmour
parents:
diff changeset
922 // keep offset up to date incase of errors
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jlarmour
parents:
diff changeset
923 fp->f_offset = pos;
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parents:
diff changeset
924 }
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jlarmour
parents:
diff changeset
925 }
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jlarmour
parents:
diff changeset
926
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parents:
diff changeset
927 return ENOERR;
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jlarmour
parents:
diff changeset
928 }
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jlarmour
parents:
diff changeset
929
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jlarmour
parents:
diff changeset
930 // -------------------------------------------------------------------------
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jlarmour
parents:
diff changeset
931
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jlarmour
parents:
diff changeset
932 static int testfs_fo_write (struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents:
diff changeset
933 {
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parents:
diff changeset
934 testfs_node *nd = (testfs_node *)fp->f_data;
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jlarmour
parents:
diff changeset
935 int i;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
936 off_t pos = fp->f_offset;
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jlarmour
parents:
diff changeset
937
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
938 // Check we are not at end of allowed max file size
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jlarmour
parents:
diff changeset
939 if( pos >= TESTFS_FILESIZE_MAX )
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jlarmour
parents:
diff changeset
940 return EFBIG;
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jlarmour
parents:
diff changeset
941
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
942 // Check that pos is within current file size, or at the very end.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents:
diff changeset
943 if( pos < 0 || pos > nd->status.st_size )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
944 return EINVAL;
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jlarmour
parents:
diff changeset
945
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jlarmour
parents:
diff changeset
946 // Now loop over the iovecs until they are all done, or
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
947 // we get an error.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
948 for( i = 0; i < uio->uio_iovcnt; i++ )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
949 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
950 cyg_iovec *iov = &uio->uio_iov[i];
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
951 char *buf = (char *)iov->iov_base;
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jlarmour
parents:
diff changeset
952 off_t len = iov->iov_len;
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jlarmour
parents:
diff changeset
953
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
954 while( len > 0 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
955 {
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jlarmour
parents:
diff changeset
956 testfs_block *b = nd->u.file.data[pos/TESTFS_BLOCKSIZE];
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jlarmour
parents:
diff changeset
957 off_t l = len;
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jlarmour
parents:
diff changeset
958 off_t bpos = pos%TESTFS_BLOCKSIZE;
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jlarmour
parents:
diff changeset
959
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
960 // If there is no block in that pos, allocate one
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
961 // and initialize it
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
962 if( b == NULL )
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jlarmour
parents:
diff changeset
963 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
964 b = free_block;
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jlarmour
parents:
diff changeset
965 if( b == NULL ) return ENOSPC;
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jlarmour
parents:
diff changeset
966 free_block = b->u.next;
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jlarmour
parents:
diff changeset
967 nd->u.file.data[pos/TESTFS_BLOCKSIZE] = b;
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jlarmour
parents:
diff changeset
968 b->u.file = nd;
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jlarmour
parents:
diff changeset
969 b->pos = pos;
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jlarmour
parents:
diff changeset
970 b->size = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
971 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
972
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
973 // adjust size to this block
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
974 if( l > (TESTFS_BLOCKSIZE-bpos) )
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jlarmour
parents:
diff changeset
975 l = (TESTFS_BLOCKSIZE-bpos);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
976
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
977 // copy data in
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
978 memcpy( &b->data[bpos], buf, l );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
979
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jlarmour
parents:
diff changeset
980 // adjust buffer info
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
981 if( b->size < bpos+l )
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jlarmour
parents:
diff changeset
982 b->size = bpos+l;
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jlarmour
parents:
diff changeset
983
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
984 uio->uio_resid -= l;
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jlarmour
parents:
diff changeset
985 len -= l;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
986 buf += l;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
987 pos += l;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
988
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
989 // keep node size and file offset up to date
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
990 //in case of an error.
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jlarmour
parents:
diff changeset
991 if( pos > nd->status.st_size )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
992 nd->status.st_size = pos;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
993 fp->f_offset = pos;
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jlarmour
parents:
diff changeset
994
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
995 if( pos >= TESTFS_FILESIZE_MAX )
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jlarmour
parents:
diff changeset
996 return EFBIG;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
997 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
998 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
999
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1000 return ENOERR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1001 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1002
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1003 // -------------------------------------------------------------------------
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jlarmour
parents:
diff changeset
1004
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1005 static int testfs_fo_lseek (struct CYG_FILE_TAG *fp, off_t *apos, int whence )
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jlarmour
parents:
diff changeset
1006 {
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jlarmour
parents:
diff changeset
1007 testfs_node *nd = (testfs_node *)fp->f_data;
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jlarmour
parents:
diff changeset
1008 off_t pos = *apos;
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jlarmour
parents:
diff changeset
1009
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1010 switch( whence )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1011 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1012 case SEEK_SET:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1013 // we are already where we want to be.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1014 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1015
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1016 case SEEK_CUR:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1017 pos += fp->f_offset;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1018 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1019
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1020 case SEEK_END:
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jlarmour
parents:
diff changeset
1021 pos += nd->status.st_size;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1022 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1023
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1024 default:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1025 return EINVAL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1026 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1027
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1028 // Check that pos is within current file size, or at the very end.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1029 if( pos < 0 || pos > nd->status.st_size )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1030 return EINVAL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1031
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1032 // All OK, set fp offset.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1033 *apos = fp->f_offset = pos;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1034
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1035 return ENOERR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1036 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1037
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1038 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1039
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1040 static int testfs_fo_ioctl (struct CYG_FILE_TAG *fp, CYG_ADDRWORD com,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1041 CYG_ADDRWORD data)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1042 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1043 return ENOSYS;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1044 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1045
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1046 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1047
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1048 static int testfs_fo_fsync (struct CYG_FILE_TAG *fp, int mode )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1049 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1050 // Nothing to do
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1051 return ENOERR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1052 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1053
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1054 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1055
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1056 static int testfs_fo_close (struct CYG_FILE_TAG *fp)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1057 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1058 testfs_node *nd = (testfs_node *)fp->f_data;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1059
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1060 nd->refcnt--; // remove open count
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1061
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1062 fp->f_data = 0; // clear data pointer
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1063
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1064 return ENOERR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1065 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1066
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1067 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1068
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1069 static int testfs_fo_fstat (struct CYG_FILE_TAG *fp, struct stat *buf )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1070 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1071 testfs_node *nd = (testfs_node *)fp->f_data;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1072
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1073 *buf = nd->status;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1074
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1075 return ENOERR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1076 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1077
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1078 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1079
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1080 static int testfs_fo_getinfo (struct CYG_FILE_TAG *fp, int key, void *buf, int len )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1081 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1082 return ENOERR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1083 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1084
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1085 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1086
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1087 static int testfs_fo_setinfo (struct CYG_FILE_TAG *fp, int key, void *buf, int len )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1088 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1089 return ENOERR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1090 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1091
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1092
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1093 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1094 // Directory operations
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1095
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1096 static int testfs_fo_dirread (struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1097 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1098 testfs_node *nd = (testfs_node *)fp->f_data;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1099 off_t pos = fp->f_offset;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1100 cyg_iovec *iov = &uio->uio_iov[0];
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1101 char *buf = (char *)iov->iov_base;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1102 off_t len = iov->iov_len;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1103
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1104 // End of directory
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1105 if( pos >= TESTFS_FILEBLOCKS )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1106 return ENOERR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1107
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1108 if( len < sizeof(struct dirent) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1109 return EINVAL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1110
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1111 for( ; pos < TESTFS_FILEBLOCKS; pos++ )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1112 if( nd->u.dir.nodes[pos] != NULL )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1113 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1114 struct dirent *ent = (struct dirent *)buf;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1115 strcpy( ent->d_name, nd->u.dir.nodes[pos]->name );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1116 uio->uio_resid -= sizeof(struct dirent);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1117 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1118 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1119
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1120 fp->f_offset = pos+1;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1121
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1122 return ENOERR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1123 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1124
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1125 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1126
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1127 static int testfs_fo_dirlseek (struct CYG_FILE_TAG *fp, off_t *pos, int whence )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1128 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1129 if( whence != SEEK_SET || *pos != 0)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1130 return EINVAL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1131
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1132 *pos = fp->f_offset = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1133
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1134 return ENOERR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1135 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1136
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1137 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1138 // Filesystem dump
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1139 // Dumps out the node and block arrays in a readable format, and does
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1140 // a little consistency checking as it goes.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1141
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1142 void testfs_dump(void)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1143 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1144 int errors = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1145 int i;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1146 char *indent = "\n |";
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1147
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1148 diag_printf("Nodes:\n");
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1149 for( i = 0; i < TESTFS_NFILE; i++ )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1150 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1151 testfs_node *nd = &node[i];
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1152
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1153 diag_printf("%3d : ",i);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1154 if( nd->refcnt < 0 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1155 diag_printf("<free>");
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
1156 else if( !S_ISDIR(nd->status.st_mode) )
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1157 {
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1158 // Regular file
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diff changeset
1159 int j;
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1160 diag_printf("f %8s %4d |",nd->name,nd->status.st_size);
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1161 for( j = 0; j < TESTFS_FILEBLOCKS; j++ )
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1162 {
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1163 testfs_block *b = nd->u.file.data[j];
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1164 if( b != NULL )
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1165 {
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1166 if( j > 0 && (j%4) == 0 )
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diff changeset
1167 diag_printf(indent);
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diff changeset
1168 diag_printf(" %3d[%3d,%3d]",b-block,b->pos,b->size);
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1169 if( b->u.file != nd )
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1170 {
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1171 errors++;
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1172 diag_printf("!");
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1173 }
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1174 }
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1175 }
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1176 }
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1177 else
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1178 {
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1179 // Directory
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diff changeset
1180 int j;
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1181 int rc = 1;
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1182 diag_printf("d %8s |",nd->name);
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diff changeset
1183
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diff changeset
1184 for( j = 0; j < TESTFS_FILEBLOCKS; j++ )
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1185 {
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diff changeset
1186 testfs_node *n = nd->u.dir.nodes[j];
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diff changeset
1187 if( n != NULL )
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diff changeset
1188 {
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diff changeset
1189 if( j > 0 && (j%4) == 0 )
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diff changeset
1190 diag_printf(indent);
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diff changeset
1191 diag_printf(" %3d[%7s]",n-node,n->name);
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diff changeset
1192 rc++;
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1193 }
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diff changeset
1194 }
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diff changeset
1195
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diff changeset
1196 if( nd->refcnt != rc )
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1197 {
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diff changeset
1198 diag_printf("%s refcount is %d should be %d",indent,nd->refcnt,rc);
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diff changeset
1199 if( nd->refcnt == rc+1 )
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diff changeset
1200 diag_printf(" (but may be current dir)");
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diff changeset
1201 }
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diff changeset
1202 }
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diff changeset
1203
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diff changeset
1204 diag_printf("\n");
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diff changeset
1205 }
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diff changeset
1206
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diff changeset
1207 diag_printf("Blocks:\n");
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diff changeset
1208
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diff changeset
1209 for( i = 0; i < TESTFS_NBLOCK; i++ )
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diff changeset
1210 {
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diff changeset
1211 testfs_block *b = &block[i];
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diff changeset
1212
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diff changeset
1213 diag_printf("%3d :",i);
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diff changeset
1214 if( b->pos == -1 )
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diff changeset
1215 diag_printf(" <free>");
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diff changeset
1216 else
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diff changeset
1217 {
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diff changeset
1218 int j;
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diff changeset
1219 testfs_node *nd = b->u.file;
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diff changeset
1220 diag_printf(" %3d %3d %d[%7s]",b->pos,b->size,nd-node,nd->name);
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diff changeset
1221 for( j = 0; j < TESTFS_FILEBLOCKS; j++ )
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diff changeset
1222 {
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diff changeset
1223 if( nd->u.file.data[j] == b )
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diff changeset
1224 break;
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diff changeset
1225 }
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diff changeset
1226 if( j == TESTFS_FILEBLOCKS )
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diff changeset
1227 {
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diff changeset
1228 errors++;
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diff changeset
1229 diag_printf(" block not in file!");
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diff changeset
1230 }
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diff changeset
1231 }
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diff changeset
1232 diag_printf("\n");
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diff changeset
1233 }
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diff changeset
1234
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diff changeset
1235 if( errors != 0 )
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diff changeset
1236 diag_printf("%d errors detected\n",errors);
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diff changeset
1237 }
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diff changeset
1238
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diff changeset
1239 // -------------------------------------------------------------------------
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diff changeset
1240 // EOF testfs.c