1 | /* |
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2 | * tfsDriver.c - MicroMonitor TFS Hookup to RTEMS FS |
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3 | * |
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4 | * Initial release: Oct 1, 2004 by Ed Sutter |
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5 | * |
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6 | * This code was derived from the tftpDriver.c code written by |
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7 | * W. Eric Norum, which was apparently derived from the IMFS driver. |
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8 | * |
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9 | * This code was reformatted by Joel Sherrill from OAR Corporation and |
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10 | * Fernando Nicodemos <fgnicodemos@terra.com.br> from NCB - Sistemas |
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11 | * Embarcados Ltda. (Brazil) to be more compliant with RTEMS coding |
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12 | * standards and to eliminate C++ style comments. |
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13 | * |
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14 | * The license and distribution terms for this file may be |
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15 | * found in the file LICENSE in this distribution or at |
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16 | * http://www.rtems.com/license/LICENSE. |
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17 | * |
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18 | * $Id$ |
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19 | */ |
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20 | |
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21 | #include <stdio.h> |
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22 | #include <stdlib.h> |
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23 | #include <string.h> |
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24 | #include <unistd.h> |
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25 | #include <errno.h> |
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26 | #include <fcntl.h> |
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27 | #include <inttypes.h> |
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28 | #include <rtems.h> |
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29 | #include <rtems/libio.h> |
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30 | #include <rtems/libio_.h> |
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31 | #include <rtems/seterr.h> |
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32 | #include <rtems/bspIo.h> |
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33 | |
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34 | #include <umon/tfs.h> |
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35 | #include <umon/monlib.h> |
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36 | |
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37 | #ifdef RTEMS_TFS_DRIVER_DEBUG |
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38 | #define RTEMS_TFS_DEBUG 1 |
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39 | #else |
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40 | #define RTEMS_TFS_DEBUG 0 |
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41 | #endif |
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42 | |
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43 | #define MAXFILESIZE 0x4000 |
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44 | #define MAXTFDS 15 |
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45 | |
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46 | /* Define these for thread safety... |
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47 | */ |
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48 | #ifndef newlib_tfdlock |
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49 | #define newlib_tfdlock() |
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50 | #endif |
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51 | |
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52 | #ifndef newlib_tfdunlock |
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53 | #define newlib_tfdunlock() |
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54 | #endif |
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55 | |
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56 | /* TFS file descriptor info: |
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57 | */ |
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58 | struct tfdinfo { |
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59 | int inuse; |
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60 | int tfd; |
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61 | char *buf; |
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62 | char name[TFSNAMESIZE+1]; |
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63 | char info[TFSNAMESIZE+1]; |
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64 | } tfdtable[MAXTFDS]; |
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65 | |
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66 | /* |
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67 | * Pathname prefix |
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68 | */ |
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69 | char TFS_PATHNAME_PREFIX[128]; |
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70 | |
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71 | /* |
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72 | * Root node_access value |
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73 | * By using the address of a local static variable |
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74 | * we ensure a unique value for this identifier. |
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75 | */ |
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76 | #define ROOT_NODE_ACCESS (&tfs_mutex) |
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77 | |
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78 | /* Number of streams open at the same time |
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79 | */ |
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80 | static rtems_id tfs_mutex; |
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81 | |
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82 | extern rtems_filesystem_operations_table rtems_tfs_ops; |
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83 | extern rtems_filesystem_file_handlers_r rtems_tfs_handlers; |
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84 | |
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85 | /* Direct copy from the IMFS. Look at this. |
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86 | */ |
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87 | |
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88 | rtems_filesystem_limits_and_options_t rtems_tfs_limits_and_options = { |
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89 | 5, /* link_max */ |
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90 | 6, /* max_canon */ |
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91 | 7, /* max_input */ |
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92 | 255, /* name_max */ |
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93 | 255, /* path_max */ |
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94 | 2, /* pipe_buf */ |
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95 | 1, /* posix_async_io */ |
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96 | 2, /* posix_chown_restrictions */ |
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97 | 3, /* posix_no_trunc */ |
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98 | 4, /* posix_prio_io */ |
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99 | 5, /* posix_sync_io */ |
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100 | 6 /* posix_vdisable */ |
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101 | }; |
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102 | |
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103 | static int rtems_tfs_mount_me( |
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104 | rtems_filesystem_mount_table_entry_t *mt_entry, |
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105 | const void *data |
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106 | ) |
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107 | { |
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108 | rtems_status_code sc; |
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109 | |
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110 | mt_entry->mt_fs_root.handlers = &rtems_tfs_handlers; |
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111 | mt_entry->mt_fs_root.ops = &rtems_tfs_ops; |
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112 | |
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113 | /* We have no TFS specific data to maintain. This filesystem |
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114 | * may only be mounted once. And we maintain no real filesystem |
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115 | * nodes, so there is no real root. |
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116 | */ |
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117 | |
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118 | mt_entry->fs_info = NULL; |
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119 | mt_entry->mt_fs_root.node_access = ROOT_NODE_ACCESS; |
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120 | |
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121 | /* These need to be looked at for full POSIX semantics. |
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122 | */ |
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123 | |
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124 | mt_entry->pathconf_limits_and_options = rtems_tfs_limits_and_options; |
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125 | |
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126 | |
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127 | /* Now allocate a semaphore for mutual exclusion. |
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128 | * NOTE: This could be in an fsinfo for this filesystem type. |
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129 | */ |
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130 | |
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131 | sc = rtems_semaphore_create ( |
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132 | rtems_build_name('U', 'M', 'O', 'N'), |
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133 | 1, |
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134 | RTEMS_FIFO | |
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135 | RTEMS_BINARY_SEMAPHORE | |
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136 | RTEMS_NO_INHERIT_PRIORITY | |
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137 | RTEMS_NO_PRIORITY_CEILING | |
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138 | RTEMS_LOCAL, |
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139 | 0, |
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140 | &tfs_mutex); |
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141 | |
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142 | if (sc != RTEMS_SUCCESSFUL) |
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143 | rtems_set_errno_and_return_minus_one( ENOMEM ); |
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144 | |
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145 | return 0; |
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146 | } |
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147 | |
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148 | /* Initialize the TFS-RTEMS file system |
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149 | */ |
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150 | int rtems_initialize_tfs_filesystem( |
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151 | const char *path |
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152 | ) |
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153 | { |
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154 | int status; |
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155 | |
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156 | if (!path) { |
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157 | printk( "TFS: No mount point specified\n" ); |
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158 | return -1; |
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159 | } |
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160 | |
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161 | strncpy( TFS_PATHNAME_PREFIX, path, sizeof(TFS_PATHNAME_PREFIX) ); |
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162 | |
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163 | status = mkdir( TFS_PATHNAME_PREFIX, S_IRWXU | S_IRWXG | S_IRWXO ); |
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164 | if ( status == -1 ) { |
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165 | printk( "TFS: Unable to mkdir %s\n", TFS_PATHNAME_PREFIX ); |
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166 | return status; |
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167 | } |
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168 | |
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169 | if (rtems_filesystem_register( "tfs", rtems_tfs_mount_me ) < 0) |
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170 | return -1; |
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171 | |
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172 | status = mount( "umon", TFS_PATHNAME_PREFIX, "tfs", RTEMS_FILESYSTEM_READ_WRITE, NULL); |
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173 | |
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174 | if (status < 0) { |
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175 | printk( "TFS: Unable to mount on %s\n", TFS_PATHNAME_PREFIX ); |
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176 | perror("TFS mount failed"); |
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177 | } |
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178 | |
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179 | return(status); |
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180 | } |
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181 | |
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182 | static int rtems_tfs_evaluate_for_make( |
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183 | const char *path, |
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184 | rtems_filesystem_location_info_t *pathloc, |
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185 | const char **name |
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186 | ) |
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187 | { |
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188 | pathloc->node_access = NULL; |
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189 | rtems_set_errno_and_return_minus_one( EIO ); |
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190 | } |
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191 | |
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192 | /* |
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193 | * Convert a path to canonical form |
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194 | */ |
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195 | static void fixPath(char *path) |
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196 | { |
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197 | char *inp, *outp, *base; |
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198 | |
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199 | outp = inp = path; |
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200 | base = NULL; |
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201 | for (;;) { |
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202 | if (inp[0] == '.') { |
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203 | if (inp[1] == '\0') |
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204 | break; |
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205 | if (inp[1] == '/') { |
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206 | inp += 2; |
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207 | continue; |
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208 | } |
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209 | if (inp[1] == '.') { |
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210 | if (inp[2] == '\0') { |
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211 | if ((base != NULL) && (outp > base)) { |
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212 | outp--; |
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213 | while ((outp > base) && (outp[-1] != '/')) |
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214 | outp--; |
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215 | } |
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216 | break; |
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217 | } |
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218 | if (inp[2] == '/') { |
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219 | inp += 3; |
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220 | if (base == NULL) |
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221 | continue; |
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222 | if (outp > base) { |
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223 | outp--; |
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224 | while ((outp > base) && (outp[-1] != '/')) |
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225 | outp--; |
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226 | } |
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227 | continue; |
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228 | } |
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229 | } |
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230 | } |
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231 | if (base == NULL) |
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232 | base = inp; |
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233 | while (inp[0] != '/') { |
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234 | if ((*outp++ = *inp++) == '\0') |
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235 | return; |
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236 | } |
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237 | *outp++ = '/'; |
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238 | while (inp[0] == '/') |
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239 | inp++; |
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240 | } |
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241 | *outp = '\0'; |
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242 | } |
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243 | |
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244 | static int rtems_tfs_eval_path( |
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245 | const char *pathname, |
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246 | size_t pathnamelen, |
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247 | int flags, |
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248 | rtems_filesystem_location_info_t *pathloc |
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249 | ) |
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250 | { |
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251 | pathloc->handlers = &rtems_tfs_handlers; |
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252 | |
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253 | /* |
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254 | * Hack to provide the illusion of directories inside the TFS file system. |
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255 | * Paths ending in a / are assumed to be directories. |
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256 | */ |
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257 | if (pathname[strlen(pathname)-1] == '/') { |
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258 | int isRelative = (pathloc->node_access != ROOT_NODE_ACCESS); |
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259 | char *cp; |
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260 | |
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261 | /* |
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262 | * Reject attempts to open() directories |
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263 | */ |
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264 | if (flags & RTEMS_LIBIO_PERMS_RDWR) |
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265 | rtems_set_errno_and_return_minus_one( EISDIR ); |
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266 | if (isRelative) { |
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267 | cp = malloc (strlen(pathloc->node_access)+strlen(pathname)+1); |
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268 | if (cp == NULL) |
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269 | rtems_set_errno_and_return_minus_one( ENOMEM ); |
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270 | strcpy (cp, pathloc->node_access); |
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271 | strcat (cp, pathname); |
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272 | } else { |
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273 | cp = strdup (pathname); |
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274 | if (cp == NULL) |
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275 | rtems_set_errno_and_return_minus_one( ENOMEM ); |
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276 | } |
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277 | fixPath (cp); |
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278 | pathloc->node_access = cp; |
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279 | return 0; |
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280 | } |
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281 | if (pathloc->node_access != ROOT_NODE_ACCESS) |
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282 | pathloc->node_access = 0; |
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283 | |
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284 | /* |
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285 | * Reject it if it's not read-only or write-only. |
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286 | */ |
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287 | flags &= RTEMS_LIBIO_PERMS_READ | RTEMS_LIBIO_PERMS_WRITE; |
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288 | if ((flags != RTEMS_LIBIO_PERMS_READ) && (flags != RTEMS_LIBIO_PERMS_WRITE) ) |
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289 | rtems_set_errno_and_return_minus_one( EINVAL ); |
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290 | return 0; |
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291 | } |
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292 | |
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293 | /* |
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294 | * The routine which does most of the work for the IMFS open handler |
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295 | * The full_path_name here is all text AFTER the TFS_PATHNAME_PREFIX |
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296 | * string, so if the filename is "/TFS/abc", the full_path_name string |
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297 | * is "abc"... |
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298 | * |
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299 | * Attempts to remap the incoming flags to TFS equivalent. |
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300 | * Its not a perfect mapping, but gets pretty close. |
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301 | * A comma-delimited path is supported to allow the user |
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302 | * to specify TFS-stuff (flag string, info string, and a buffer). |
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303 | * For example: |
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304 | * abc,e,script,0x400000 |
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305 | * This is a file called "abc" that will have the TFS 'e' flag |
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306 | * and the TFS info field of "script". The storage buffer is |
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307 | * supplied by the user at 0x400000. |
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308 | */ |
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309 | static int rtems_tfs_open_worker( |
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310 | rtems_libio_t *iop, |
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311 | char *path, |
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312 | uint32_t flags, |
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313 | uint32_t mode |
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314 | ) |
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315 | { |
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316 | static int beenhere = 0; |
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317 | long flagmode; |
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318 | int tfdidx, tfd; |
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319 | struct tfdinfo *tip; |
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320 | char *buf, *fstr, *istr, *bstr, pathcopy[TFSNAMESIZE*3+1]; |
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321 | |
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322 | if (RTEMS_TFS_DEBUG) |
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323 | printk("_open_r(%s,0x%" PRIx32 ",0x%" PRIx32 ")\n",path,flags,mode); |
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324 | |
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325 | if (!beenhere) { |
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326 | newlib_tfdlock(); |
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327 | for(tfdidx=0;tfdidx<MAXTFDS;tfdidx++) |
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328 | tfdtable[tfdidx].inuse = 0; |
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329 | |
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330 | tfdtable[0].inuse = 1; /* fake entry for stdin */ |
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331 | tfdtable[1].inuse = 1; /* fake entry for stdout */ |
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332 | tfdtable[2].inuse = 1; /* fake entry for stderr */ |
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333 | newlib_tfdunlock(); |
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334 | beenhere = 1; |
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335 | } |
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336 | |
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337 | istr = fstr = bstr = buf = (char *)0; |
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338 | |
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339 | /* Copy the incoming path to a local array so that we can safely |
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340 | * modify the string... |
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341 | */ |
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342 | if (strlen(path) > TFSNAMESIZE*3) { |
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343 | return(ENAMETOOLONG); |
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344 | } |
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345 | strcpy(pathcopy,path); |
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346 | |
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347 | /* The incoming string may have commas that are used to delimit the |
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348 | * name from the TFS flag string, TFS info string and buffer. |
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349 | * Check for the commas and test for maximum string length... |
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350 | */ |
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351 | fstr = strchr(pathcopy,','); |
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352 | if (fstr) { |
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353 | *fstr++ = 0; |
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354 | istr = strchr(fstr,','); |
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355 | if (istr) { |
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356 | *istr++ = 0; |
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357 | bstr = strchr(istr,','); |
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358 | if (bstr) |
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359 | *bstr++ = 0; |
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360 | } |
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361 | } |
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362 | if (strlen(pathcopy) > TFSNAMESIZE) { |
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363 | return(ENAMETOOLONG); |
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364 | } |
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365 | if (istr) { |
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366 | if (strlen(istr) > TFSNAMESIZE) { |
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367 | return(ENAMETOOLONG); |
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368 | } |
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369 | } |
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370 | |
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371 | /* If O_EXCL and O_CREAT are set, then fail if the file exists... |
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372 | */ |
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373 | if ((flags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL)) { |
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374 | if (mon_tfsstat((char *)pathcopy)) { |
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375 | return(EEXIST); |
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376 | } |
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377 | } |
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378 | |
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379 | /* Only a few flag combinations are supported... |
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380 | * O_RDONLY Simple read-only |
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381 | * O_WRONLY | O_APPEND Each write starts at end of file |
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382 | * O_WRONLY | O_TRUNC If file exists, truncate it |
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383 | * O_WRONLY | O_CREAT Create if it doesn't exist |
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384 | * O_WRONLY | O_CREAT | O_EXCL Fail if file exists |
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385 | */ |
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386 | switch(flags & O_ACCMODE) { |
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387 | case O_RDONLY: |
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388 | flagmode = TFS_RDONLY; |
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389 | break; |
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390 | case O_WRONLY|O_APPEND: |
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391 | flagmode = TFS_APPEND; |
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392 | break; |
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393 | case O_WRONLY|O_TRUNC: |
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394 | case O_WRONLY|O_CREAT|O_TRUNC: |
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395 | mon_tfsunlink((char *)pathcopy); |
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396 | flagmode = TFS_CREATE|TFS_APPEND; |
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397 | break; |
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398 | case O_WRONLY|O_CREAT: |
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399 | case O_WRONLY|O_CREAT|O_APPEND: |
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400 | flagmode = TFS_CREATE|TFS_APPEND; |
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401 | break; |
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402 | case O_RDWR: |
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403 | case O_WRONLY|O_CREAT|O_EXCL: |
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404 | flagmode = TFS_CREATE|TFS_APPEND; |
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405 | break; |
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406 | default: |
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407 | printk("_open_r(): flag 0x%" PRIx32 " not supported\n",flags); |
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408 | return(ENOTSUP); |
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409 | } |
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410 | |
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411 | /* Find an open slot in our tfd table: |
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412 | */ |
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413 | newlib_tfdlock(); |
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414 | for(tfdidx=0;tfdidx<MAXTFDS;tfdidx++) { |
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415 | if (tfdtable[tfdidx].inuse == 0) |
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416 | break; |
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417 | } |
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418 | if (tfdidx == MAXTFDS) { |
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419 | newlib_tfdunlock(); |
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420 | return(EMFILE); |
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421 | } |
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422 | tip = &tfdtable[tfdidx]; |
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423 | tip->inuse = 1; |
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424 | newlib_tfdunlock(); |
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425 | |
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426 | /* If file is opened for something other than O_RDONLY, then |
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427 | * we need to allocate a buffer for the file.. |
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428 | * WARNING: It is the user's responsibility to make sure that |
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429 | * the file size does not exceed this buffer. Note that the |
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430 | * buffer may be specified as part of the comma-delimited path. |
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431 | */ |
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432 | if (flagmode == TFS_RDONLY) { |
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433 | buf = (char *)0; |
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434 | } else { |
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435 | if (bstr) |
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436 | buf = (char *)strtol(bstr,0,0); |
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437 | else |
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438 | buf = malloc(MAXFILESIZE); |
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439 | if (!buf) { |
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440 | newlib_tfdlock(); |
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441 | tip->inuse = 0; |
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442 | newlib_tfdunlock(); |
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443 | return(ENOMEM); |
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444 | } |
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445 | } |
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446 | |
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447 | /* Deal with tfs flags and tfs info fields if necessary: |
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448 | */ |
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449 | if (fstr) { |
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450 | long bflag; |
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451 | |
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452 | bflag = mon_tfsctrl(TFS_FATOB,(long)fstr,0); |
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453 | if (bflag == -1) { |
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454 | return(EINVAL); |
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455 | } |
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456 | flagmode |= bflag; |
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457 | } |
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458 | |
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459 | if (istr) |
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460 | strcpy(tip->info,istr); |
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461 | else |
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462 | tip->info[0] = 0; |
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463 | |
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464 | tfd = mon_tfsopen((char *)pathcopy,flagmode,buf); |
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465 | if (tfd >= 0) { |
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466 | tip->tfd = tfd; |
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467 | tip->buf = buf; |
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468 | strcpy(tip->name,pathcopy); |
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469 | iop->data0 = (void *)tfdidx; |
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470 | return(0); |
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471 | } else { |
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472 | printk("%s: %s\n",pathcopy, |
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473 | (char *)mon_tfsctrl(TFS_ERRMSG,tfd,0)); |
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474 | } |
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475 | |
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476 | if (buf) |
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477 | free(buf); |
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478 | |
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479 | newlib_tfdlock(); |
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480 | tip->inuse = 0; |
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481 | newlib_tfdunlock(); |
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482 | return(EINVAL); |
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483 | } |
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484 | |
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485 | /* |
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486 | * The IMFS open handler |
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487 | */ |
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488 | static int rtems_tfs_open( |
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489 | rtems_libio_t *iop, |
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490 | const char *new_name, |
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491 | uint32_t flags, |
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492 | uint32_t mode |
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493 | ) |
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494 | { |
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495 | char *full_path_name; |
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496 | char *s1; |
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497 | int err; |
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498 | |
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499 | if (RTEMS_TFS_DEBUG) |
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500 | printk("rtems_tfs_open(%s)\n",new_name); |
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501 | |
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502 | /* |
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503 | * Tack the `current directory' on to relative paths. |
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504 | * We know that the current directory ends in a / character. |
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505 | */ |
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506 | if (*new_name == '/') { |
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507 | /* |
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508 | * Skip the TFS filesystem prefix. |
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509 | */ |
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510 | int len = strlen (TFS_PATHNAME_PREFIX); |
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511 | if (strncmp (new_name, TFS_PATHNAME_PREFIX, len)) |
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512 | return ENOENT; |
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513 | new_name += len; |
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514 | s1 = ""; |
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515 | } else { |
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516 | s1 = rtems_filesystem_current.node_access; |
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517 | } |
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518 | full_path_name = malloc (strlen (s1) + strlen (new_name) + 1); |
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519 | if (full_path_name == NULL) |
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520 | return ENOMEM; |
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521 | strcpy (full_path_name, s1); |
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522 | strcat (full_path_name, new_name); |
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523 | fixPath (full_path_name); |
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524 | err = rtems_tfs_open_worker (iop, full_path_name, flags, mode); |
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525 | free (full_path_name); |
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526 | return err; |
---|
527 | } |
---|
528 | |
---|
529 | /* |
---|
530 | * Read from an open TFS file... |
---|
531 | */ |
---|
532 | static ssize_t rtems_tfs_read( |
---|
533 | rtems_libio_t *iop, |
---|
534 | void *buffer, |
---|
535 | uint32_t count |
---|
536 | ) |
---|
537 | { |
---|
538 | int ret, fd; |
---|
539 | |
---|
540 | fd = (int) iop->data0; |
---|
541 | |
---|
542 | if (RTEMS_TFS_DEBUG) |
---|
543 | printk("_read_r(%d,%" PRId32 ")\n",fd,count); |
---|
544 | |
---|
545 | if ((fd < 3) || (fd >= MAXTFDS)) |
---|
546 | return(EBADF); |
---|
547 | |
---|
548 | ret = mon_tfsread(tfdtable[fd].tfd,buffer,count); |
---|
549 | if (ret == TFSERR_EOF) |
---|
550 | ret = 0; |
---|
551 | |
---|
552 | return(ret); |
---|
553 | } |
---|
554 | |
---|
555 | /* |
---|
556 | * Close the open tfs file. |
---|
557 | */ |
---|
558 | static int rtems_tfs_close( |
---|
559 | rtems_libio_t *iop |
---|
560 | ) |
---|
561 | { |
---|
562 | int fd; |
---|
563 | char *info; |
---|
564 | struct tfdinfo *tip; |
---|
565 | |
---|
566 | fd = (int)iop->data0; |
---|
567 | |
---|
568 | if (RTEMS_TFS_DEBUG) |
---|
569 | printk("rtems_tfs_close(%d)\n",fd); |
---|
570 | |
---|
571 | if ((fd < 3) || (fd >= MAXTFDS)) { |
---|
572 | rtems_set_errno_and_return_minus_one (EBADF); |
---|
573 | } |
---|
574 | |
---|
575 | tip = &tfdtable[fd]; |
---|
576 | |
---|
577 | if (tip->info[0]) |
---|
578 | info = tip->info; |
---|
579 | else |
---|
580 | info = (char *)0; |
---|
581 | |
---|
582 | mon_tfsclose(tip->tfd,info); |
---|
583 | |
---|
584 | if (tip->buf) |
---|
585 | free(tip->buf); |
---|
586 | |
---|
587 | newlib_tfdlock(); |
---|
588 | tip->inuse = 0; |
---|
589 | newlib_tfdunlock(); |
---|
590 | return RTEMS_SUCCESSFUL; |
---|
591 | } |
---|
592 | |
---|
593 | static ssize_t rtems_tfs_write( |
---|
594 | rtems_libio_t *iop, |
---|
595 | const void *buffer, |
---|
596 | uint32_t count |
---|
597 | ) |
---|
598 | { |
---|
599 | int ret, fd; |
---|
600 | |
---|
601 | fd = (int) iop->data0; |
---|
602 | |
---|
603 | if (RTEMS_TFS_DEBUG) |
---|
604 | printk("rtems_tfs_write(%d,%" PRId32" )\n",fd,count); |
---|
605 | |
---|
606 | if ((fd <= 0) || (fd >= MAXTFDS)) { |
---|
607 | rtems_set_errno_and_return_minus_one (EBADF); |
---|
608 | } |
---|
609 | |
---|
610 | ret = mon_tfswrite(tfdtable[fd].tfd,(char *)buffer,count); |
---|
611 | if (ret < 0) |
---|
612 | return(-1); |
---|
613 | |
---|
614 | return(ret); |
---|
615 | } |
---|
616 | |
---|
617 | static rtems_off64_t rtems_tfs_lseek( |
---|
618 | rtems_libio_t *iop, |
---|
619 | rtems_off64_t offset, |
---|
620 | int whence |
---|
621 | ) |
---|
622 | { |
---|
623 | int ret, fd; |
---|
624 | |
---|
625 | fd = (int) iop->data0; |
---|
626 | |
---|
627 | if (RTEMS_TFS_DEBUG) |
---|
628 | printk("rtems_tfs_lseek(%d,%ld,%d)\n",fd,(long)offset,whence); |
---|
629 | |
---|
630 | switch (whence) { |
---|
631 | case SEEK_END: |
---|
632 | printk("rtems_tfs_lseek doesn't support SEEK_END\n"); |
---|
633 | return(-1); |
---|
634 | case SEEK_CUR: |
---|
635 | whence = TFS_CURRENT; |
---|
636 | break; |
---|
637 | case SEEK_SET: |
---|
638 | whence = TFS_BEGIN; |
---|
639 | break; |
---|
640 | } |
---|
641 | ret = mon_tfsseek(tfdtable[fd].tfd,offset,whence); |
---|
642 | |
---|
643 | if (ret < 0) |
---|
644 | return(-1); |
---|
645 | |
---|
646 | return (rtems_off64_t)ret; |
---|
647 | } |
---|
648 | |
---|
649 | /* |
---|
650 | * |
---|
651 | */ |
---|
652 | static int rtems_tfs_ftruncate( |
---|
653 | rtems_libio_t *iop, |
---|
654 | rtems_off64_t count |
---|
655 | ) |
---|
656 | { |
---|
657 | int ret, fd; |
---|
658 | |
---|
659 | fd = (int) iop->data0; |
---|
660 | ret = mon_tfstruncate(tfdtable[fd].tfd,count); |
---|
661 | if (ret != TFS_OKAY) |
---|
662 | return(-1); |
---|
663 | |
---|
664 | return(0); |
---|
665 | } |
---|
666 | |
---|
667 | static int rtems_tfs_ioctl( |
---|
668 | rtems_libio_t *iop, |
---|
669 | uint32_t cmd, |
---|
670 | void *buf |
---|
671 | ) |
---|
672 | { |
---|
673 | int fd, ret; |
---|
674 | |
---|
675 | fd = (int) iop->data0; |
---|
676 | ret = mon_tfsctrl(cmd,(long)buf,0); |
---|
677 | return(-1); |
---|
678 | } |
---|
679 | |
---|
680 | static rtems_filesystem_node_types_t rtems_tfs_node_type( |
---|
681 | rtems_filesystem_location_info_t *pathloc |
---|
682 | ) |
---|
683 | { |
---|
684 | if ((pathloc->node_access == NULL) || |
---|
685 | (pathloc->node_access == ROOT_NODE_ACCESS)) |
---|
686 | return RTEMS_FILESYSTEM_MEMORY_FILE; |
---|
687 | return RTEMS_FILESYSTEM_DIRECTORY; |
---|
688 | } |
---|
689 | |
---|
690 | static int rtems_tfs_free_node_info( |
---|
691 | |
---|
692 | rtems_filesystem_location_info_t *pathloc) |
---|
693 | { |
---|
694 | if (pathloc->node_access && (pathloc->node_access != ROOT_NODE_ACCESS)) { |
---|
695 | free (pathloc->node_access); |
---|
696 | pathloc->node_access = NULL; |
---|
697 | } |
---|
698 | return 0; |
---|
699 | } |
---|
700 | |
---|
701 | |
---|
702 | rtems_filesystem_operations_table rtems_tfs_ops = { |
---|
703 | rtems_tfs_eval_path, /* eval_path */ |
---|
704 | rtems_tfs_evaluate_for_make, /* evaluate_for_make */ |
---|
705 | rtems_filesystem_default_link, /* link */ |
---|
706 | rtems_filesystem_default_unlink, /* unlink */ |
---|
707 | rtems_tfs_node_type, /* node_type */ |
---|
708 | rtems_filesystem_default_mknod, /* mknod */ |
---|
709 | rtems_filesystem_default_chown, /* chown */ |
---|
710 | rtems_tfs_free_node_info, /* freenodinfo */ |
---|
711 | rtems_filesystem_default_mount, /* mount */ |
---|
712 | rtems_tfs_mount_me, /* initialize */ |
---|
713 | rtems_filesystem_default_unmount, /* unmount */ |
---|
714 | rtems_filesystem_default_fsunmount, /* fsunmount */ |
---|
715 | rtems_filesystem_default_utime, /* utime */ |
---|
716 | rtems_filesystem_default_evaluate_link, /* evaluate_link */ |
---|
717 | rtems_filesystem_default_symlink, /* symlink */ |
---|
718 | rtems_filesystem_default_readlink, /* readlin */ |
---|
719 | rtems_filesystem_default_rename, /* rename */ |
---|
720 | rtems_filesystem_default_statvfs /* statvfs */ |
---|
721 | }; |
---|
722 | |
---|
723 | rtems_filesystem_file_handlers_r rtems_tfs_handlers = { |
---|
724 | rtems_tfs_open, /* open */ |
---|
725 | rtems_tfs_close, /* close */ |
---|
726 | rtems_tfs_read, /* read */ |
---|
727 | rtems_tfs_write, /* write */ |
---|
728 | rtems_tfs_ioctl, /* ioctl */ |
---|
729 | rtems_tfs_lseek, /* lseek */ |
---|
730 | rtems_filesystem_default_fstat, /* fstat */ |
---|
731 | rtems_filesystem_default_fchmod, /* fchmod */ |
---|
732 | rtems_tfs_ftruncate, /* ftruncate */ |
---|
733 | rtems_filesystem_default_fpathconf, /* fpathconf */ |
---|
734 | rtems_filesystem_default_fsync, /* fsync */ |
---|
735 | rtems_filesystem_default_fdatasync, /* fdatasync */ |
---|
736 | rtems_filesystem_default_fcntl, /* fcntl */ |
---|
737 | rtems_filesystem_default_rmnod /* rmnod */ |
---|
738 | }; |
---|