fx_file_write.c
| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /*************************************************************************** | ||
| 2 | * Copyright (c) 2024 Microsoft Corporation | ||
| 3 | * Copyright (c) 2026-present Eclipse ThreadX contributors | ||
| 4 | * | ||
| 5 | * This program and the accompanying materials are made available under the | ||
| 6 | * terms of the MIT License which is available at | ||
| 7 | * https://opensource.org/licenses/MIT. | ||
| 8 | * | ||
| 9 | * SPDX-License-Identifier: MIT | ||
| 10 | **************************************************************************/ | ||
| 11 | |||
| 12 | |||
| 13 | /**************************************************************************/ | ||
| 14 | /**************************************************************************/ | ||
| 15 | /** */ | ||
| 16 | /** FileX Component */ | ||
| 17 | /** */ | ||
| 18 | /** File */ | ||
| 19 | /** */ | ||
| 20 | /**************************************************************************/ | ||
| 21 | /**************************************************************************/ | ||
| 22 | |||
| 23 | #define FX_SOURCE_CODE | ||
| 24 | |||
| 25 | /* Include necessary system files. */ | ||
| 26 | |||
| 27 | #include "fx_api.h" | ||
| 28 | #include "fx_system.h" | ||
| 29 | #include "fx_file.h" | ||
| 30 | #include "fx_directory.h" | ||
| 31 | #include "fx_utility.h" | ||
| 32 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 33 | #include "fx_fault_tolerant.h" | ||
| 34 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 35 | |||
| 36 | |||
| 37 | /**************************************************************************/ | ||
| 38 | /* */ | ||
| 39 | /* FUNCTION RELEASE */ | ||
| 40 | /* */ | ||
| 41 | /* _fx_file_write PORTABLE C */ | ||
| 42 | /* 6.1 */ | ||
| 43 | /* AUTHOR */ | ||
| 44 | /* */ | ||
| 45 | /* William E. Lamie, Microsoft Corporation */ | ||
| 46 | /* */ | ||
| 47 | /* DESCRIPTION */ | ||
| 48 | /* */ | ||
| 49 | /* This function writes the specified number of bytes into the file's */ | ||
| 50 | /* data area. The status of the write operation is returned to the */ | ||
| 51 | /* caller. In addition, various internal file pointers in the file */ | ||
| 52 | /* control block are also updated. */ | ||
| 53 | /* */ | ||
| 54 | /* INPUT */ | ||
| 55 | /* */ | ||
| 56 | /* file_ptr File control block pointer */ | ||
| 57 | /* buffer_ptr Buffer pointer */ | ||
| 58 | /* size Number of bytes to write */ | ||
| 59 | /* */ | ||
| 60 | /* OUTPUT */ | ||
| 61 | /* */ | ||
| 62 | /* return status */ | ||
| 63 | /* */ | ||
| 64 | /* CALLS */ | ||
| 65 | /* */ | ||
| 66 | /* _fx_directory_entry_write Update the file's size */ | ||
| 67 | /* _fx_utility_FAT_entry_read Read a FAT entry */ | ||
| 68 | /* _fx_utility_FAT_entry_write Write a FAT entry */ | ||
| 69 | /* _fx_utility_FAT_flush Flush written FAT entries */ | ||
| 70 | /* _fx_utility_logical_sector_flush Flush written logical sectors */ | ||
| 71 | /* _fx_utility_logical_sector_read Read a logical sector */ | ||
| 72 | /* _fx_utility_logical_sector_write Write a logical sector */ | ||
| 73 | /* _fx_utility_memory_copy Fast memory copy routine */ | ||
| 74 | /* _fx_fault_tolerant_transaction_start Start fault tolerant */ | ||
| 75 | /* transaction */ | ||
| 76 | /* _fx_fault_tolerant_transaction_end End fault tolerant transaction*/ | ||
| 77 | /* _fx_fault_tolerant_recover Recover FAT chain */ | ||
| 78 | /* _fx_fault_tolerant_reset_log_file Reset the log file */ | ||
| 79 | /* _fx_fault_tolerant_set_FAT_chain Set data of FAT chain */ | ||
| 80 | /* */ | ||
| 81 | /* CALLED BY */ | ||
| 82 | /* */ | ||
| 83 | /* Application Code */ | ||
| 84 | /* */ | ||
| 85 | /**************************************************************************/ | ||
| 86 | 162244155 | UINT _fx_file_write(FX_FILE *file_ptr, VOID *buffer_ptr, ULONG size) | |
| 87 | { | ||
| 88 | |||
| 89 | UINT status; | ||
| 90 | ULONG64 bytes_remaining; | ||
| 91 | ULONG i; | ||
| 92 | ULONG copy_bytes; | ||
| 93 | ULONG bytes_per_cluster; | ||
| 94 | UCHAR *source_ptr; | ||
| 95 | ULONG first_new_cluster; | ||
| 96 | ULONG last_cluster; | ||
| 97 | ULONG cluster, next_cluster; | ||
| 98 | ULONG FAT_index; | ||
| 99 | ULONG FAT_value; | ||
| 100 | ULONG clusters; | ||
| 101 | ULONG total_clusters; | ||
| 102 | UINT sectors; | ||
| 103 | FX_MEDIA *media_ptr; | ||
| 104 | |||
| 105 | |||
| 106 | #ifdef FX_FAULT_TOLERANT_DATA | ||
| 107 | FX_INT_SAVE_AREA | ||
| 108 | #endif | ||
| 109 | |||
| 110 | #ifndef FX_DONT_UPDATE_OPEN_FILES | ||
| 111 | ULONG open_count; | ||
| 112 | FX_FILE *search_ptr; | ||
| 113 | #endif | ||
| 114 | |||
| 115 | #ifdef TX_ENABLE_EVENT_TRACE | ||
| 116 | TX_TRACE_BUFFER_ENTRY *trace_event; | ||
| 117 | ULONG trace_timestamp; | ||
| 118 | #endif | ||
| 119 | |||
| 120 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 121 | 159195211 | UCHAR data_append = FX_FALSE; /* Whether or not new data would extend beyond the size of the original file. | |
| 122 | Operations such as append or overwrite could cause the new file to exceed its | ||
| 123 | original size, resulting in data-appending operation. */ | ||
| 124 | 159195211 | ULONG copy_head_cluster = 0; /* The first cluster of the original chain that needs to be replaced. */ | |
| 125 | 159195211 | ULONG copy_tail_cluster = 0; /* The last cluster of the original chain that needs to be replaced. */ | |
| 126 | ULONG insertion_back; /* The insertion point (back) */ | ||
| 127 | 159195211 | ULONG insertion_front = 0; /* The insertion point (front) */ | |
| 128 | 159195211 | ULONG replace_clusters = 0; /* The number of clusters to be replaced. */ | |
| 129 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 130 | |||
| 131 | |||
| 132 | /* First, determine if the file is still open. */ | ||
| 133 |
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162244155 | if (file_ptr -> fx_file_id != FX_FILE_ID) |
| 134 | { | ||
| 135 | |||
| 136 | /* Return the file not open error status. */ | ||
| 137 | 13 | return(FX_NOT_OPEN); | |
| 138 | } | ||
| 139 | |||
| 140 | /* Setup pointer to media structure. */ | ||
| 141 | 162244142 | media_ptr = file_ptr -> fx_file_media_ptr; | |
| 142 | |||
| 143 | #ifndef FX_MEDIA_STATISTICS_DISABLE | ||
| 144 | |||
| 145 | /* Increment the number of times this service has been called. */ | ||
| 146 | 162244142 | media_ptr -> fx_media_file_writes++; | |
| 147 | #endif | ||
| 148 | |||
| 149 | |||
| 150 |
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162244142 | if (file_ptr -> fx_file_current_file_offset + size > 0xFFFFFFFFULL) |
| 151 | { | ||
| 152 | |||
| 153 | /* Return the no more space error, since the new file size would be larger than | ||
| 154 | the 32-bit field to represent it in the file's directory entry. */ | ||
| 155 | 9 | return(FX_NO_MORE_SPACE); | |
| 156 | } | ||
| 157 | |||
| 158 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 159 | /* Initialize next cluster of tail. */ | ||
| 160 | 159195199 | insertion_back = media_ptr -> fx_media_fat_last; | |
| 161 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 162 | |||
| 163 | /* If trace is enabled, insert this event into the trace buffer. */ | ||
| 164 | FX_TRACE_IN_LINE_INSERT(FX_TRACE_FILE_WRITE, file_ptr, buffer_ptr, size, 0, FX_TRACE_FILE_EVENTS, &trace_event, &trace_timestamp) | ||
| 165 | |||
| 166 | /* Protect against other threads accessing the media. */ | ||
| 167 | 83122178 | FX_PROTECT | |
| 168 | |||
| 169 | /* Check for write protect at the media level (set by driver). */ | ||
| 170 |
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162244133 | if (media_ptr -> fx_media_driver_write_protect) |
| 171 | { | ||
| 172 | |||
| 173 | /* Release media protection. */ | ||
| 174 | 5 | FX_UNPROTECT | |
| 175 | |||
| 176 | /* Return write protect error. */ | ||
| 177 | 9 | return(FX_WRITE_PROTECT); | |
| 178 | } | ||
| 179 | |||
| 180 | /* Make sure this file is open for writing. */ | ||
| 181 |
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162244124 | if (file_ptr -> fx_file_open_mode != FX_OPEN_FOR_WRITE) |
| 182 | { | ||
| 183 | |||
| 184 | /* Release media protection. */ | ||
| 185 | 5 | FX_UNPROTECT | |
| 186 | |||
| 187 | /* Return the access error exception - a write was attempted from | ||
| 188 | a file opened for reading! */ | ||
| 189 | 9 | return(FX_ACCESS_ERROR); | |
| 190 | } | ||
| 191 | |||
| 192 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 193 | |||
| 194 | /* Start transaction. */ | ||
| 195 | 159195191 | _fx_fault_tolerant_transaction_start(media_ptr); | |
| 196 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 197 | |||
| 198 | /* Calculate the number of bytes per cluster. */ | ||
| 199 | 162244115 | bytes_per_cluster = ((ULONG)media_ptr -> fx_media_bytes_per_sector) * | |
| 200 | 162244115 | ((ULONG)media_ptr -> fx_media_sectors_per_cluster); | |
| 201 | |||
| 202 | /* Check for invalid value. */ | ||
| 203 |
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162244115 | if (bytes_per_cluster == 0) |
| 204 | { | ||
| 205 | |||
| 206 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 207 | 4 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 208 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 209 | |||
| 210 | /* Release media protection. */ | ||
| 211 | 5 | FX_UNPROTECT | |
| 212 | |||
| 213 | /* Invalid media, return error. */ | ||
| 214 | 9 | return(FX_MEDIA_INVALID); | |
| 215 | } | ||
| 216 | |||
| 217 | /* Initialized first new cluster. */ | ||
| 218 | 162244106 | first_new_cluster = 0; | |
| 219 | |||
| 220 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 221 | /* Calculate clusters need to be replaced when fault tolerant is enabled. */ | ||
| 222 |
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159195187 | if (media_ptr -> fx_media_fault_tolerant_enabled) |
| 223 | { | ||
| 224 | |||
| 225 |
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156736175 | if (file_ptr -> fx_file_current_file_offset == file_ptr -> fx_file_current_file_size) |
| 226 | { | ||
| 227 | |||
| 228 | /* Appending data. No need to replace existing clusters. */ | ||
| 229 | 155123127 | replace_clusters = 0; | |
| 230 | } | ||
| 231 |
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1613048 | else if (file_ptr -> fx_file_current_file_offset == file_ptr -> fx_file_maximum_size_used) |
| 232 | { | ||
| 233 | |||
| 234 | /* Similar to append data. No actual data after fx_file_maximum_size_used. | ||
| 235 | * No need to replace existing clusters. */ | ||
| 236 | 72 | replace_clusters = 0; | |
| 237 | } | ||
| 238 | 1612976 | else if (((file_ptr -> fx_file_current_file_offset / media_ptr -> fx_media_bytes_per_sector) == | |
| 239 |
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1612976 | ((file_ptr -> fx_file_current_file_offset + size - 1) / media_ptr -> fx_media_bytes_per_sector)) && |
| 240 |
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299690 | ((file_ptr -> fx_file_current_file_offset + size) <= file_ptr -> fx_file_current_file_size)) |
| 241 | { | ||
| 242 | |||
| 243 | /* Overwriting data in one sector. No need to replace existing clusters. */ | ||
| 244 | 299650 | replace_clusters = 0; | |
| 245 | } | ||
| 246 |
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1313326 | else if ((file_ptr -> fx_file_current_available_size - file_ptr -> fx_file_current_file_offset) < size) |
| 247 | { | ||
| 248 | |||
| 249 | /* Replace all clusters from current_cluster. */ | ||
| 250 | 400 | replace_clusters = (UINT)(file_ptr -> fx_file_total_clusters - file_ptr -> fx_file_current_relative_cluster); | |
| 251 | 400 | copy_head_cluster = file_ptr -> fx_file_current_physical_cluster; | |
| 252 | |||
| 253 | 400 | data_append = FX_TRUE; | |
| 254 | } | ||
| 255 | else | ||
| 256 | { | ||
| 257 | |||
| 258 | /* Replace clusters from current_cluster to the end of written cluster. */ | ||
| 259 | 1312926 | replace_clusters = (UINT)((file_ptr -> fx_file_current_file_offset + size + bytes_per_cluster - 1) / bytes_per_cluster - | |
| 260 | 1312926 | file_ptr -> fx_file_current_relative_cluster); | |
| 261 | 1312926 | copy_head_cluster = file_ptr -> fx_file_current_physical_cluster; | |
| 262 | 1312926 | data_append = FX_FALSE; | |
| 263 | } | ||
| 264 | } | ||
| 265 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 266 | |||
| 267 | /* Next, determine if there is enough room to write the specified number of | ||
| 268 | bytes to the clusters already allocated to this file. */ | ||
| 269 |
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162244106 | if (((file_ptr -> fx_file_current_available_size - file_ptr -> fx_file_current_file_offset) < size) |
| 270 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 271 |
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155259166 | || (replace_clusters) |
| 272 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 273 | ) | ||
| 274 | { | ||
| 275 | |||
| 276 | /* The new request will not fit within the currently allocated clusters. */ | ||
| 277 | |||
| 278 | /* Calculate the number of additional clusters that must be allocated for this | ||
| 279 | write request. */ | ||
| 280 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 281 | /* Find the number of clusters that need to be replaced. */ | ||
| 282 |
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5248946 | if (media_ptr -> fx_media_fault_tolerant_enabled) |
| 283 | { | ||
| 284 | |||
| 285 | /* Mark the recovery phase. */ | ||
| 286 | 5012840 | media_ptr -> fx_media_fault_tolerant_state |= FX_FAULT_TOLERANT_STATE_SET_FAT_CHAIN; | |
| 287 | |||
| 288 | 5012840 | bytes_remaining = file_ptr -> fx_file_current_file_offset + size; | |
| 289 | |||
| 290 |
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5012840 | if (replace_clusters > 0) |
| 291 | { | ||
| 292 | |||
| 293 | |||
| 294 | /* Find previous cluster of copy head cluster. */ | ||
| 295 | /* The previous cluster is not initialized. Find it. */ | ||
| 296 |
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1313321 | if (copy_head_cluster != file_ptr -> fx_file_first_physical_cluster) |
| 297 | { | ||
| 298 | |||
| 299 | /* The copy head cluster is not the first cluster of file. */ | ||
| 300 | /* Copy head is not the first cluster of file. */ | ||
| 301 |
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988972 | if (file_ptr -> fx_file_current_relative_cluster < file_ptr -> fx_file_consecutive_cluster) |
| 302 | { | ||
| 303 | |||
| 304 | /* Clusters before current cluster are consecutive. */ | ||
| 305 | 12 | insertion_front = copy_head_cluster - 1; | |
| 306 | 12 | bytes_remaining -= file_ptr -> fx_file_current_relative_cluster * bytes_per_cluster; | |
| 307 | } | ||
| 308 | else | ||
| 309 | { | ||
| 310 | |||
| 311 | /* Skip consecutive clusters first. */ | ||
| 312 | 988960 | cluster = file_ptr -> fx_file_first_physical_cluster; | |
| 313 | |||
| 314 | /* Loop the link of FAT to find the previous cluster. */ | ||
| 315 |
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2244287 | while ((cluster >= FX_FAT_ENTRY_START) && (cluster < media_ptr -> fx_media_fat_reserved)) |
| 316 | { | ||
| 317 | |||
| 318 | /* Reduce remaining bytes. */ | ||
| 319 | 2244267 | bytes_remaining -= bytes_per_cluster; | |
| 320 | |||
| 321 | /* Read the current cluster entry from the FAT. */ | ||
| 322 | 2244267 | status = _fx_utility_FAT_entry_read(media_ptr, cluster, &FAT_value); | |
| 323 | |||
| 324 | /* Check the return value. */ | ||
| 325 |
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2244267 | if (status != FX_SUCCESS) |
| 326 | { | ||
| 327 | |||
| 328 | 16 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 329 | |||
| 330 | /* Release media protection. */ | ||
| 331 | 8 | FX_UNPROTECT | |
| 332 | |||
| 333 | /* Return the error status. */ | ||
| 334 | 16 | return(status); | |
| 335 | } | ||
| 336 | |||
| 337 |
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2244251 | if (FAT_value == copy_head_cluster) |
| 338 | { | ||
| 339 | 988924 | break; | |
| 340 | } | ||
| 341 | |||
| 342 | /* Move to next cluster. */ | ||
| 343 | 1255327 | cluster = FAT_value; | |
| 344 | } | ||
| 345 | |||
| 346 |
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988944 | if ((cluster >= FX_FAT_ENTRY_START) && (cluster < media_ptr -> fx_media_fat_reserved)) |
| 347 | { | ||
| 348 | |||
| 349 | /* Find the previous cluster. */ | ||
| 350 | 988924 | insertion_front = cluster; | |
| 351 | } | ||
| 352 | else | ||
| 353 | { | ||
| 354 | |||
| 355 | 20 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 356 | |||
| 357 | /* Release media protection. */ | ||
| 358 | 10 | FX_UNPROTECT | |
| 359 | |||
| 360 | /* Return the error status. */ | ||
| 361 | 20 | return(FX_NOT_FOUND); | |
| 362 | } | ||
| 363 | } | ||
| 364 | } | ||
| 365 | |||
| 366 | /* Find copy tail cluster. */ | ||
| 367 |
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1313285 | if (bytes_remaining <= bytes_per_cluster) |
| 368 | { | ||
| 369 | |||
| 370 | /* Only one cluster is modified. */ | ||
| 371 | 503527 | copy_tail_cluster = copy_head_cluster; | |
| 372 | } | ||
| 373 |
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809758 | else if (data_append == FX_FALSE) |
| 374 | { | ||
| 375 | |||
| 376 | /* Search from copy head cluster. */ | ||
| 377 | 809362 | cluster = copy_head_cluster; | |
| 378 | 809362 | FAT_value = FX_FAT_ENTRY_START; | |
| 379 | |||
| 380 | /* Loop the link of FAT to find the previous cluster. */ | ||
| 381 |
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2042499 | while ((cluster >= FX_FAT_ENTRY_START) && (cluster < media_ptr -> fx_media_fat_reserved)) |
| 382 | { | ||
| 383 | |||
| 384 |
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2042491 | if (bytes_remaining <= bytes_per_cluster) |
| 385 | { | ||
| 386 | 809346 | break; | |
| 387 | } | ||
| 388 | |||
| 389 | /* Reduce remaining bytes. */ | ||
| 390 | 1233145 | bytes_remaining -= bytes_per_cluster; | |
| 391 | |||
| 392 | /* Read the current cluster entry from the FAT. */ | ||
| 393 | 1233145 | status = _fx_utility_FAT_entry_read(media_ptr, cluster, &FAT_value); | |
| 394 | |||
| 395 | /* Check the return value. */ | ||
| 396 |
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1233145 | if (status != FX_SUCCESS) |
| 397 | { | ||
| 398 | |||
| 399 | 8 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 400 | |||
| 401 | /* Release media protection. */ | ||
| 402 | 4 | FX_UNPROTECT | |
| 403 | |||
| 404 | /* Return the error status. */ | ||
| 405 | 8 | return(status); | |
| 406 | } | ||
| 407 | |||
| 408 | /* Move to next cluster. */ | ||
| 409 | 1233137 | cluster = FAT_value; | |
| 410 | } | ||
| 411 | |||
| 412 | /* Find the previous cluster. */ | ||
| 413 | 809354 | copy_tail_cluster = FAT_value; | |
| 414 | } | ||
| 415 | |||
| 416 | /* Get the cluster next to copy tail. */ | ||
| 417 |
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|
1313277 | if (data_append == FX_FALSE) |
| 418 | { | ||
| 419 | |||
| 420 | /* Read FAT entry. */ | ||
| 421 | 1312881 | status = _fx_utility_FAT_entry_read(media_ptr, copy_tail_cluster, &insertion_back); | |
| 422 | |||
| 423 | /* Check for a bad status. */ | ||
| 424 |
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1312881 | if (status != FX_SUCCESS) |
| 425 | { | ||
| 426 | |||
| 427 | ✗ | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 428 | |||
| 429 | /* Release media protection. */ | ||
| 430 | ✗ | FX_UNPROTECT | |
| 431 | |||
| 432 | /* Return the bad status. */ | ||
| 433 | ✗ | return(status); | |
| 434 | } | ||
| 435 | } | ||
| 436 | else | ||
| 437 | { | ||
| 438 | 396 | insertion_back = media_ptr -> fx_media_fat_last; | |
| 439 | } | ||
| 440 | } | ||
| 441 | else | ||
| 442 | { | ||
| 443 | 3699519 | insertion_back = media_ptr -> fx_media_fat_last; | |
| 444 | } | ||
| 445 | } | ||
| 446 | |||
| 447 |
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|
5248902 | if (file_ptr -> fx_file_current_available_size - file_ptr -> fx_file_current_file_offset < size) |
| 448 | { | ||
| 449 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 450 | /* Calculate clusters that are needed for data append except ones overwritten. */ | ||
| 451 | 4231451 | clusters = (UINT)((size + (bytes_per_cluster - 1) - | |
| 452 | 4231451 | (file_ptr -> fx_file_current_available_size - file_ptr -> fx_file_current_file_offset)) / | |
| 453 | bytes_per_cluster); | ||
| 454 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 455 | } | ||
| 456 | else | ||
| 457 | { | ||
| 458 | 1312881 | clusters = 0; | |
| 459 | } | ||
| 460 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 461 | |||
| 462 | /* Determine if we have enough space left. */ | ||
| 463 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 464 |
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5248902 | if (clusters + replace_clusters > media_ptr -> fx_media_available_clusters) |
| 465 | #else | ||
| 466 |
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|
295430 | if (clusters > media_ptr -> fx_media_available_clusters) |
| 467 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 468 | { | ||
| 469 | |||
| 470 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 471 | 8 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 472 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 473 | |||
| 474 | /* Release media protection. */ | ||
| 475 | 10 | FX_UNPROTECT | |
| 476 | |||
| 477 | /* Out of disk space. */ | ||
| 478 | 18 | return(FX_NO_MORE_SPACE); | |
| 479 | } | ||
| 480 | |||
| 481 | /* Update the file total cluster count. */ | ||
| 482 | 5544314 | file_ptr -> fx_file_total_clusters = file_ptr -> fx_file_total_clusters + clusters; | |
| 483 | |||
| 484 | /* Check for wrap-around when updating the available size. */ | ||
| 485 |
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|
5544314 | if (file_ptr -> fx_file_current_available_size + (ULONG64)bytes_per_cluster * (ULONG64)clusters > 0xFFFFFFFFULL) |
| 486 | { | ||
| 487 | |||
| 488 | /* 32-bit wrap around condition is present. Just set the available file size to all ones, which is | ||
| 489 | the maximum file size. */ | ||
| 490 | 9 | file_ptr -> fx_file_current_available_size = 0xFFFFFFFFULL; | |
| 491 | } | ||
| 492 | else | ||
| 493 | { | ||
| 494 | |||
| 495 | /* Normal condition, update the available size. */ | ||
| 496 | 5544305 | file_ptr -> fx_file_current_available_size = | |
| 497 | 5544305 | file_ptr -> fx_file_current_available_size + (ULONG64)bytes_per_cluster * (ULONG64)clusters; | |
| 498 | } | ||
| 499 | |||
| 500 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 501 | /* Account for newly allocated clusters. */ | ||
| 502 | 5248894 | clusters += replace_clusters; | |
| 503 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 504 | |||
| 505 | /* Decrease the available clusters in the media control block. */ | ||
| 506 | 5544314 | media_ptr -> fx_media_available_clusters = media_ptr -> fx_media_available_clusters - clusters; | |
| 507 | |||
| 508 | |||
| 509 | /* Search for the additional clusters we need. */ | ||
| 510 | 5544314 | total_clusters = media_ptr -> fx_media_total_clusters; | |
| 511 | |||
| 512 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 513 |
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|
5248894 | if (replace_clusters > 0) |
| 514 | { | ||
| 515 | |||
| 516 | /* Reset consecutive cluster. */ | ||
| 517 | 1313277 | file_ptr -> fx_file_consecutive_cluster = 1; | |
| 518 | |||
| 519 | 1313277 | last_cluster = insertion_front; | |
| 520 | |||
| 521 | } | ||
| 522 | else | ||
| 523 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 524 | { | ||
| 525 | 4231037 | last_cluster = file_ptr -> fx_file_last_physical_cluster; | |
| 526 | } | ||
| 527 | |||
| 528 | 5544314 | FAT_index = media_ptr -> fx_media_cluster_search_start; | |
| 529 | |||
| 530 | /* Loop to find the needed clusters. */ | ||
| 531 |
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|
49474182 | while (clusters) |
| 532 | { | ||
| 533 | |||
| 534 | /* Decrease the cluster count. */ | ||
| 535 | 43956225 | clusters--; | |
| 536 | |||
| 537 | /* Loop to find the first available cluster. */ | ||
| 538 | do | ||
| 539 | { | ||
| 540 | |||
| 541 | /* Make sure we stop looking after one pass through the FAT table. */ | ||
| 542 |
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|
44007724 | if (!total_clusters) |
| 543 | { | ||
| 544 | |||
| 545 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 546 | 4 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 547 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 548 | |||
| 549 | /* Release media protection. */ | ||
| 550 | 5 | FX_UNPROTECT | |
| 551 | |||
| 552 | /* Something is wrong with the media - the desired clusters were | ||
| 553 | not found in the FAT table. */ | ||
| 554 | 9 | return(FX_NO_MORE_SPACE); | |
| 555 | } | ||
| 556 | |||
| 557 | /* Read FAT entry. */ | ||
| 558 | 44007715 | status = _fx_utility_FAT_entry_read(media_ptr, FAT_index, &FAT_value); | |
| 559 | |||
| 560 | /* Check for a bad status. */ | ||
| 561 |
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|
44007707 | if (status != FX_SUCCESS) |
| 562 | { | ||
| 563 | |||
| 564 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 565 | 11624 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 566 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 567 | |||
| 568 | /* Release media protection. */ | ||
| 569 | 14570 | FX_UNPROTECT | |
| 570 | |||
| 571 | /* Return the bad status. */ | ||
| 572 | 26243 | return(status); | |
| 573 | } | ||
| 574 | |||
| 575 | /* Decrement the total cluster count. */ | ||
| 576 | 43981464 | total_clusters--; | |
| 577 | |||
| 578 | /* Determine if the FAT entry is free. */ | ||
| 579 |
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|
43981464 | if (FAT_value == FX_FREE_CLUSTER) |
| 580 | { | ||
| 581 | |||
| 582 | /* Move cluster search pointer forward. */ | ||
| 583 | 43929965 | media_ptr -> fx_media_cluster_search_start = FAT_index + 1; | |
| 584 | |||
| 585 | /* Determine if this needs to be wrapped. */ | ||
| 586 |
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|
43929965 | if (media_ptr -> fx_media_cluster_search_start >= (media_ptr -> fx_media_total_clusters + FX_FAT_ENTRY_START)) |
| 587 | { | ||
| 588 | |||
| 589 | /* Wrap the search to the beginning FAT entry. */ | ||
| 590 | 20276 | media_ptr -> fx_media_cluster_search_start = FX_FAT_ENTRY_START; | |
| 591 | } | ||
| 592 | |||
| 593 | /* Break this loop. */ | ||
| 594 | 43929965 | break; | |
| 595 | } | ||
| 596 | else | ||
| 597 | { | ||
| 598 | |||
| 599 | /* FAT entry is not free... Advance the FAT index. */ | ||
| 600 | 51499 | FAT_index++; | |
| 601 | |||
| 602 | /* Determine if we need to wrap the FAT index around. */ | ||
| 603 |
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51499 | if (FAT_index >= (media_ptr -> fx_media_total_clusters + FX_FAT_ENTRY_START)) |
| 604 | { | ||
| 605 | |||
| 606 | /* Wrap the search to the beginning FAT entry. */ | ||
| 607 | 25 | FAT_index = FX_FAT_ENTRY_START; | |
| 608 | } | ||
| 609 | } | ||
| 610 | } while (FX_TRUE); | ||
| 611 | |||
| 612 | /* Determine if we have found the first new cluster yet. */ | ||
| 613 |
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43929965 | if (first_new_cluster == 0) |
| 614 | { | ||
| 615 | |||
| 616 | /* Remember the first new cluster. */ | ||
| 617 | 5518062 | first_new_cluster = FAT_index; | |
| 618 | |||
| 619 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 620 |
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5237266 | if (media_ptr -> fx_media_fault_tolerant_enabled) |
| 621 | { | ||
| 622 | |||
| 623 | /* Set the undo log now. */ | ||
| 624 |
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5012792 | if (copy_head_cluster == 0) |
| 625 | { | ||
| 626 | 3699511 | status = _fx_fault_tolerant_set_FAT_chain(media_ptr, FX_FALSE, file_ptr -> fx_file_current_physical_cluster, | |
| 627 | first_new_cluster, media_ptr -> fx_media_fat_last, media_ptr -> fx_media_fat_last); | ||
| 628 | } | ||
| 629 | else | ||
| 630 | { | ||
| 631 | |||
| 632 | 1313281 | status = _fx_fault_tolerant_set_FAT_chain(media_ptr, FX_FALSE, insertion_front, first_new_cluster, | |
| 633 | copy_head_cluster, insertion_back); | ||
| 634 | } | ||
| 635 | |||
| 636 | /* Check for good completion status. */ | ||
| 637 |
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5012716 | if (status != FX_SUCCESS) |
| 638 | { | ||
| 639 | |||
| 640 | 8 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 641 | |||
| 642 | /* Release media protection. */ | ||
| 643 | 4 | FX_UNPROTECT | |
| 644 | |||
| 645 | /* Return the error status. */ | ||
| 646 | 8 | return(status); | |
| 647 | } | ||
| 648 | } | ||
| 649 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 650 | } | ||
| 651 | |||
| 652 | /* Make a quick check to see if an empty, cluster-less file | ||
| 653 | is being written to for the first time. */ | ||
| 654 |
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|
43929881 | if (last_cluster) |
| 655 | { | ||
| 656 | |||
| 657 | /* Check for the file's cluster. We won't perform this link until the | ||
| 658 | entire FAT chain is built. */ | ||
| 659 |
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|
40147145 | if (last_cluster != file_ptr -> fx_file_last_physical_cluster) |
| 660 | { | ||
| 661 | |||
| 662 | /* Normal condition - link the last cluster with the new | ||
| 663 | found cluster. */ | ||
| 664 | 39400819 | status = _fx_utility_FAT_entry_write(media_ptr, last_cluster, FAT_index); | |
| 665 | } | ||
| 666 | |||
| 667 | /* Check for a bad FAT write status. */ | ||
| 668 |
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40147141 | if (status != FX_SUCCESS) |
| 669 | { | ||
| 670 | |||
| 671 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 672 | 4 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 673 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 674 | |||
| 675 | /* Release media protection. */ | ||
| 676 | 5 | FX_UNPROTECT | |
| 677 | |||
| 678 | /* Return the bad status. */ | ||
| 679 | 9 | return(status); | |
| 680 | } | ||
| 681 | |||
| 682 | /* Determine if we are adding a sector after a write filled the previously | ||
| 683 | allocated cluster exactly. */ | ||
| 684 | 40147132 | if ((file_ptr -> fx_file_current_relative_sector >= | |
| 685 |
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|
40147132 | (media_ptr -> fx_media_sectors_per_cluster - 1)) && |
| 686 | 27747215 | (file_ptr -> fx_file_current_logical_offset >= | |
| 687 |
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|
27747215 | media_ptr -> fx_media_bytes_per_sector)) |
| 688 | { | ||
| 689 | |||
| 690 | /* Yes, we need to adjust all of the pertinent file parameters for | ||
| 691 | writing into this newly allocated cluster. */ | ||
| 692 | 624647 | file_ptr -> fx_file_current_physical_cluster = FAT_index; | |
| 693 | 624647 | file_ptr -> fx_file_current_relative_cluster++; | |
| 694 | 624647 | file_ptr -> fx_file_current_relative_sector = 0; | |
| 695 | 624647 | file_ptr -> fx_file_current_logical_sector = ((ULONG)media_ptr -> fx_media_data_sector_start) + | |
| 696 | 624647 | (((ULONG64)(FAT_index - FX_FAT_ENTRY_START)) * | |
| 697 | 624647 | ((ULONG)media_ptr -> fx_media_sectors_per_cluster)); | |
| 698 | 624647 | file_ptr -> fx_file_current_logical_offset = 0; | |
| 699 | } | ||
| 700 | } | ||
| 701 | else | ||
| 702 | { | ||
| 703 | |||
| 704 | /* This is the first cluster allocated for the file. Just | ||
| 705 | remember it as being the first and setup the other file | ||
| 706 | pointers accordingly. */ | ||
| 707 | 3782736 | file_ptr -> fx_file_first_physical_cluster = FAT_index; | |
| 708 | 3782736 | file_ptr -> fx_file_current_physical_cluster = FAT_index; | |
| 709 | 3782736 | file_ptr -> fx_file_current_relative_cluster = 0; | |
| 710 | 3782736 | file_ptr -> fx_file_current_logical_sector = ((ULONG)media_ptr -> fx_media_data_sector_start) + | |
| 711 | 3782736 | (((ULONG64)(FAT_index - FX_FAT_ENTRY_START)) * | |
| 712 | 3782736 | ((ULONG)media_ptr -> fx_media_sectors_per_cluster)); | |
| 713 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 714 |
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3751854 | if (file_ptr -> fx_file_last_physical_cluster == 0) |
| 715 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 716 | { | ||
| 717 | 3458431 | file_ptr -> fx_file_current_logical_offset = 0; | |
| 718 | 3458431 | file_ptr -> fx_file_current_file_offset = 0; | |
| 719 | } | ||
| 720 | |||
| 721 | /* Also remember this as the first cluster in the directory | ||
| 722 | entry. */ | ||
| 723 | 3782736 | file_ptr -> fx_file_dir_entry.fx_dir_entry_cluster = FAT_index; | |
| 724 | } | ||
| 725 | |||
| 726 | /* Otherwise, remember the new FAT index as the last. */ | ||
| 727 | 43929868 | last_cluster = FAT_index; | |
| 728 | |||
| 729 | /* Move to the next FAT entry. */ | ||
| 730 | 43929868 | FAT_index = media_ptr -> fx_media_cluster_search_start; | |
| 731 | } | ||
| 732 | |||
| 733 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 734 |
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5237166 | if (media_ptr -> fx_media_fault_tolerant_enabled) |
| 735 | { | ||
| 736 | |||
| 737 | /* Link the last cluster back to original FAT. */ | ||
| 738 | 5012696 | status = _fx_utility_FAT_entry_write(media_ptr, last_cluster, insertion_back); | |
| 739 | } | ||
| 740 | else | ||
| 741 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 742 | { | ||
| 743 | |||
| 744 | /* Place an end-of-file marker on the last cluster. */ | ||
| 745 | 505261 | status = _fx_utility_FAT_entry_write(media_ptr, last_cluster, media_ptr -> fx_media_fat_last); | |
| 746 | } | ||
| 747 | |||
| 748 | /* Check for a bad FAT write status. */ | ||
| 749 |
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5517957 | if (status != FX_SUCCESS) |
| 750 | { | ||
| 751 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 752 | 4 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 753 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 754 | |||
| 755 | /* Release media protection. */ | ||
| 756 | 5 | FX_UNPROTECT | |
| 757 | |||
| 758 | /* Return the bad status. */ | ||
| 759 | 9 | return(status); | |
| 760 | } | ||
| 761 | |||
| 762 | |||
| 763 | /* Determine if the file already had clusters. */ | ||
| 764 |
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|
5517948 | if (file_ptr -> fx_file_last_physical_cluster) |
| 765 | { | ||
| 766 | |||
| 767 | /* Now, link the file's old last cluster to the first cluster of the new chain. */ | ||
| 768 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 769 |
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1809633 | if (insertion_front) |
| 770 | { | ||
| 771 | 988916 | status = _fx_utility_FAT_entry_write(media_ptr, insertion_front, first_new_cluster); | |
| 772 | } | ||
| 773 |
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820717 | else if ((media_ptr -> fx_media_fault_tolerant_enabled == FX_FALSE) || |
| 774 |
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296616 | ((replace_clusters == 0) && (first_new_cluster))) |
| 775 | { | ||
| 776 | 496408 | status = _fx_utility_FAT_entry_write(media_ptr, file_ptr -> fx_file_last_physical_cluster, first_new_cluster); | |
| 777 | } | ||
| 778 | #else | ||
| 779 | 249914 | status = _fx_utility_FAT_entry_write(media_ptr, file_ptr -> fx_file_last_physical_cluster, first_new_cluster); | |
| 780 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 781 | |||
| 782 | /* Check for a bad FAT write status. */ | ||
| 783 |
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2059543 | if (status != FX_SUCCESS) |
| 784 | { | ||
| 785 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 786 | 4 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 787 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 788 | |||
| 789 | /* Release media protection. */ | ||
| 790 | 5 | FX_UNPROTECT | |
| 791 | |||
| 792 | /* Return the bad status. */ | ||
| 793 | 9 | return(status); | |
| 794 | } | ||
| 795 | } | ||
| 796 | |||
| 797 | #ifdef FX_FAULT_TOLERANT | ||
| 798 | |||
| 799 | |||
| 800 | /* Ensure the new FAT chain is properly written to the media. */ | ||
| 801 | |||
| 802 | /* Flush the cached individual FAT entries */ | ||
| 803 | 5237154 | _fx_utility_FAT_flush(media_ptr); | |
| 804 | #endif | ||
| 805 | |||
| 806 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 807 |
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5237090 | if (media_ptr -> fx_media_fault_tolerant_enabled) |
| 808 | { | ||
| 809 | |||
| 810 | /* Clear undo phase. */ | ||
| 811 | 5012628 | media_ptr -> fx_media_fault_tolerant_state &= (UCHAR)(~FX_FAULT_TOLERANT_STATE_SET_FAT_CHAIN & 0xff); | |
| 812 | |||
| 813 | /* Update the last cluster? */ | ||
| 814 |
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5012628 | if (insertion_back == media_ptr -> fx_media_fat_last) |
| 815 | { | ||
| 816 | |||
| 817 | /* Yes. Update the file control block with the last physical cluster. */ | ||
| 818 | 4254204 | file_ptr -> fx_file_last_physical_cluster = last_cluster; | |
| 819 | } | ||
| 820 | } | ||
| 821 | else | ||
| 822 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 823 | { | ||
| 824 | |||
| 825 | /* Update the file control block with the last physical cluster. */ | ||
| 826 | 505243 | file_ptr -> fx_file_last_physical_cluster = last_cluster; | |
| 827 | } | ||
| 828 | } | ||
| 829 | |||
| 830 | /* Check for a need to increment to the next sector within a previously | ||
| 831 | allocated cluster. */ | ||
| 832 | 162217601 | if (file_ptr -> fx_file_current_logical_offset >= | |
| 833 |
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162217601 | media_ptr -> fx_media_bytes_per_sector) |
| 834 | { | ||
| 835 | |||
| 836 | /* Update the sector specific file parameters to start at the | ||
| 837 | next logical sector. */ | ||
| 838 | 56953 | file_ptr -> fx_file_current_logical_sector++; | |
| 839 | 56953 | file_ptr -> fx_file_current_relative_sector++; | |
| 840 | 56953 | file_ptr -> fx_file_current_logical_offset = 0; | |
| 841 | } | ||
| 842 | |||
| 843 | /* At this point there is enough room to perform the file write operation. */ | ||
| 844 | |||
| 845 | /* Setup local buffer pointer. */ | ||
| 846 | 162217601 | source_ptr = (UCHAR *)buffer_ptr; | |
| 847 | |||
| 848 | /* Setup the remaining number of bytes to write. */ | ||
| 849 | 162217601 | bytes_remaining = size; | |
| 850 | |||
| 851 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 852 |
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159183331 | if (replace_clusters > 0) |
| 853 | { | ||
| 854 | |||
| 855 | /* Force update current cluster and sector. */ | ||
| 856 | 1313173 | file_ptr -> fx_file_current_physical_cluster = first_new_cluster; | |
| 857 | 1313173 | file_ptr -> fx_file_current_logical_sector = ((ULONG)media_ptr -> fx_media_data_sector_start) + | |
| 858 | 1313173 | (((ULONG64)(first_new_cluster - FX_FAT_ENTRY_START)) * | |
| 859 | 1313173 | ((ULONG)media_ptr -> fx_media_sectors_per_cluster)) + | |
| 860 | 1313173 | file_ptr -> fx_file_current_relative_sector; | |
| 861 | |||
| 862 | /* Copy sectors in replaced cluster but not overwritten at the front. */ | ||
| 863 |
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4846402 | for (i = 0; i < file_ptr -> fx_file_current_relative_sector; i++) |
| 864 | { | ||
| 865 | 3533309 | status = _fx_utility_logical_sector_read(media_ptr, | |
| 866 | 3533309 | ((ULONG)media_ptr -> fx_media_data_sector_start) + | |
| 867 | 3533309 | (((ULONG)(copy_head_cluster - FX_FAT_ENTRY_START)) * | |
| 868 | 3533309 | ((ULONG)media_ptr -> fx_media_sectors_per_cluster)) + i, | |
| 869 | 3533309 | media_ptr -> fx_media_memory_buffer, ((ULONG) 1), FX_DATA_SECTOR); | |
| 870 | |||
| 871 | /* Check for good completion status. */ | ||
| 872 |
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3533309 | if (status != FX_SUCCESS) |
| 873 | { | ||
| 874 | |||
| 875 | 4 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 876 | |||
| 877 | /* Release media protection. */ | ||
| 878 | 2 | FX_UNPROTECT | |
| 879 | |||
| 880 | /* Return the error status. */ | ||
| 881 | 4 | return(status); | |
| 882 | } | ||
| 883 | |||
| 884 | /* Write back the current logical sector. */ | ||
| 885 | 3533305 | status = _fx_utility_logical_sector_write(media_ptr, | |
| 886 | 3533305 | ((ULONG)media_ptr -> fx_media_data_sector_start) + | |
| 887 | 3533305 | (((ULONG)(file_ptr -> fx_file_current_physical_cluster - FX_FAT_ENTRY_START)) * | |
| 888 | 3533305 | ((ULONG)media_ptr -> fx_media_sectors_per_cluster)) + i, | |
| 889 | 3533305 | media_ptr -> fx_media_memory_buffer, ((ULONG) 1), FX_DATA_SECTOR); | |
| 890 | |||
| 891 | /* Check for good completion status. */ | ||
| 892 |
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3533233 | if (status != FX_SUCCESS) |
| 893 | { | ||
| 894 | |||
| 895 | 4 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 896 | |||
| 897 | /* Release media protection. */ | ||
| 898 | 2 | FX_UNPROTECT | |
| 899 | |||
| 900 | /* Return the error status. */ | ||
| 901 | 4 | return(status); | |
| 902 | } | ||
| 903 | } | ||
| 904 | } | ||
| 905 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 906 | |||
| 907 | /* Loop to write all of the bytes. */ | ||
| 908 |
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325344341 | while (bytes_remaining) |
| 909 | { | ||
| 910 | |||
| 911 | /* Determine if a beginning or ending partial write is required. */ | ||
| 912 |
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165897292 | if ((file_ptr -> fx_file_current_logical_offset) || |
| 913 |
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10153902 | (bytes_remaining < media_ptr -> fx_media_bytes_per_sector)) |
| 914 | { | ||
| 915 | |||
| 916 | /* A partial sector write is required. */ | ||
| 917 | |||
| 918 | /* Read the current logical sector. */ | ||
| 919 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 920 |
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158625002 | if (replace_clusters > 0) |
| 921 | { | ||
| 922 |
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2622078 | if (file_ptr -> fx_file_current_physical_cluster == first_new_cluster) |
| 923 | { | ||
| 924 | |||
| 925 | /* It's at beginning. */ | ||
| 926 | 1813622 | status = _fx_utility_logical_sector_read(media_ptr, | |
| 927 | 1813622 | ((ULONG)media_ptr -> fx_media_data_sector_start) + | |
| 928 | 1813622 | (((ULONG)(copy_head_cluster - FX_FAT_ENTRY_START)) * | |
| 929 | 1813622 | ((ULONG)media_ptr -> fx_media_sectors_per_cluster)) + | |
| 930 | 1813622 | file_ptr -> fx_file_current_relative_sector, | |
| 931 | 1813622 | media_ptr -> fx_media_memory_buffer, (ULONG)1, FX_DATA_SECTOR); | |
| 932 | } | ||
| 933 |
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808456 | else if (data_append == FX_FALSE) |
| 934 | { | ||
| 935 | |||
| 936 | /* It's at ending. */ | ||
| 937 | 808248 | status = _fx_utility_logical_sector_read(media_ptr, | |
| 938 | 808248 | ((ULONG)media_ptr -> fx_media_data_sector_start) + | |
| 939 | 808248 | (((ULONG)(copy_tail_cluster - FX_FAT_ENTRY_START)) * | |
| 940 | 808248 | ((ULONG)media_ptr -> fx_media_sectors_per_cluster)) + | |
| 941 | 808248 | file_ptr -> fx_file_current_relative_sector, | |
| 942 | 808248 | media_ptr -> fx_media_memory_buffer, (ULONG)1, FX_DATA_SECTOR); | |
| 943 | } | ||
| 944 | else | ||
| 945 | { | ||
| 946 | |||
| 947 | /* It's at ending. */ | ||
| 948 | 208 | status = _fx_utility_logical_sector_read(media_ptr, | |
| 949 | file_ptr -> fx_file_current_logical_sector, | ||
| 950 | 208 | media_ptr -> fx_media_memory_buffer, ((ULONG) 1), FX_DATA_SECTOR); | |
| 951 | } | ||
| 952 | } | ||
| 953 | else | ||
| 954 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 955 | { | ||
| 956 | 158964432 | status = _fx_utility_logical_sector_read(media_ptr, | |
| 957 | file_ptr -> fx_file_current_logical_sector, | ||
| 958 | 158964432 | media_ptr -> fx_media_memory_buffer, ((ULONG) 1), FX_DATA_SECTOR); | |
| 959 | } | ||
| 960 | |||
| 961 | /* Check for good completion status. */ | ||
| 962 |
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161586510 | if (status != FX_SUCCESS) |
| 963 | { | ||
| 964 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 965 | 71848 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 966 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 967 | |||
| 968 | /* Release media protection. */ | ||
| 969 | 94632 | FX_UNPROTECT | |
| 970 | |||
| 971 | /* Return the error status. */ | ||
| 972 | 175899 | return(status); | |
| 973 | } | ||
| 974 | |||
| 975 | /* Copy the appropriate number of bytes into the destination buffer. */ | ||
| 976 | 161410611 | copy_bytes = media_ptr -> fx_media_bytes_per_sector - | |
| 977 | 161410611 | file_ptr -> fx_file_current_logical_offset; | |
| 978 | |||
| 979 | /* Check to see if only a portion of the sector needs to be | ||
| 980 | copied. */ | ||
| 981 |
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161410611 | if (copy_bytes > bytes_remaining) |
| 982 | { | ||
| 983 | |||
| 984 | /* Adjust the number of bytes to copy. */ | ||
| 985 | 157309545 | copy_bytes = (ULONG)bytes_remaining; | |
| 986 | } | ||
| 987 | |||
| 988 | /* Actually perform the memory copy. */ | ||
| 989 | 161410611 | _fx_utility_memory_copy(source_ptr, ((UCHAR *)media_ptr -> fx_media_memory_buffer) + /* Use case of memcpy is verified. */ | |
| 990 | 161410611 | file_ptr -> fx_file_current_logical_offset, | |
| 991 | copy_bytes); | ||
| 992 | |||
| 993 | /* Write back the current logical sector. */ | ||
| 994 | 161410611 | status = _fx_utility_logical_sector_write(media_ptr, file_ptr -> fx_file_current_logical_sector, | |
| 995 | 161410611 | media_ptr -> fx_media_memory_buffer, ((ULONG) 1), FX_DATA_SECTOR); | |
| 996 | |||
| 997 | /* Check for good completion status. */ | ||
| 998 |
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161410587 | if (status != FX_SUCCESS) |
| 999 | { | ||
| 1000 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 1001 | 57404 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 1002 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 1003 | |||
| 1004 | /* Release media protection. */ | ||
| 1005 | 53362 | FX_UNPROTECT | |
| 1006 | |||
| 1007 | /* Return the error status. */ | ||
| 1008 | 102571 | return(status); | |
| 1009 | } | ||
| 1010 | |||
| 1011 | |||
| 1012 | /* Increment the logical sector byte offset. */ | ||
| 1013 | 161308016 | file_ptr -> fx_file_current_logical_offset = | |
| 1014 | 161308016 | file_ptr -> fx_file_current_logical_offset + copy_bytes; | |
| 1015 | |||
| 1016 | /* Adjust the remaining bytes to read. */ | ||
| 1017 | 161308016 | bytes_remaining = bytes_remaining - copy_bytes; | |
| 1018 | |||
| 1019 | /* Adjust the pointer to the source buffer. */ | ||
| 1020 | 161308016 | source_ptr = source_ptr + copy_bytes; | |
| 1021 | } | ||
| 1022 | else | ||
| 1023 | { | ||
| 1024 | |||
| 1025 | /* Attempt to write multiple sectors directly to the media. */ | ||
| 1026 | |||
| 1027 | /* Calculate the number of whole sectors to write. */ | ||
| 1028 | 4310782 | sectors = (UINT)(bytes_remaining / media_ptr -> fx_media_bytes_per_sector); | |
| 1029 | |||
| 1030 | 4310782 | next_cluster = cluster = file_ptr -> fx_file_current_physical_cluster; | |
| 1031 | |||
| 1032 | 4310782 | for (i = (media_ptr -> fx_media_sectors_per_cluster - | |
| 1033 |
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40885892 | file_ptr -> fx_file_current_relative_sector); i < sectors; i += media_ptr -> fx_media_sectors_per_cluster) |
| 1034 | { | ||
| 1035 | 36583608 | status = _fx_utility_FAT_entry_read(media_ptr, cluster, &next_cluster); | |
| 1036 | |||
| 1037 | /* Determine if an error is present. */ | ||
| 1038 |
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36583608 | if ((status != FX_SUCCESS) || (next_cluster < FX_FAT_ENTRY_START) || |
| 1039 |
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36582571 | (next_cluster > media_ptr -> fx_media_fat_reserved)) |
| 1040 | { | ||
| 1041 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 1042 | 672 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 1043 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 1044 | |||
| 1045 | /* Release media protection. */ | ||
| 1046 | 1148 | FX_UNPROTECT | |
| 1047 | |||
| 1048 | /* Send error message back to caller. */ | ||
| 1049 |
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1961 | if (status != FX_SUCCESS) |
| 1050 | { | ||
| 1051 | 1028 | return(status); | |
| 1052 | } | ||
| 1053 | else | ||
| 1054 | { | ||
| 1055 | 933 | return(FX_FILE_CORRUPT); | |
| 1056 | } | ||
| 1057 | } | ||
| 1058 | |||
| 1059 |
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36581647 | if (next_cluster != cluster + 1) |
| 1060 | { | ||
| 1061 | 6537 | break; | |
| 1062 | } | ||
| 1063 | else | ||
| 1064 | { | ||
| 1065 | 36575110 | cluster = next_cluster; | |
| 1066 | } | ||
| 1067 | } | ||
| 1068 | |||
| 1069 |
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4308821 | if (i < sectors) |
| 1070 | { | ||
| 1071 | 6537 | sectors = i; | |
| 1072 | } | ||
| 1073 | |||
| 1074 | /* Perform the data write directly from the user's buffer of | ||
| 1075 | the appropriate number of sectors. */ | ||
| 1076 | 4308821 | status = _fx_utility_logical_sector_write(media_ptr, file_ptr -> fx_file_current_logical_sector, | |
| 1077 | source_ptr, (ULONG) sectors, FX_DATA_SECTOR); | ||
| 1078 | |||
| 1079 | /* Check for good completion status. */ | ||
| 1080 |
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4308749 | if (status != FX_SUCCESS) |
| 1081 | { | ||
| 1082 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 1083 | 4208 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 1084 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 1085 | |||
| 1086 | /* Release media protection. */ | ||
| 1087 | 3874 | FX_UNPROTECT | |
| 1088 | |||
| 1089 | /* Return the error status. */ | ||
| 1090 | 7313 | return(status); | |
| 1091 | } | ||
| 1092 | |||
| 1093 | /* Now adjust the various file pointers. */ | ||
| 1094 | |||
| 1095 | /* Increment the current logical sector. Subtract one from | ||
| 1096 | the sector count because we are going to use the logical | ||
| 1097 | offset to do additional sector/cluster arithmetic below. */ | ||
| 1098 | 4301436 | file_ptr -> fx_file_current_logical_sector = | |
| 1099 | 4301436 | file_ptr -> fx_file_current_logical_sector + | |
| 1100 | 4301436 | (sectors - 1); | |
| 1101 | |||
| 1102 | /* Move the relative cluster and sector as well. */ | ||
| 1103 | 4301436 | file_ptr -> fx_file_current_relative_cluster = file_ptr -> fx_file_current_relative_cluster + | |
| 1104 | 4301436 | (file_ptr -> fx_file_current_relative_sector + (sectors - 1)) / | |
| 1105 | 4301436 | media_ptr -> fx_media_sectors_per_cluster; | |
| 1106 | |||
| 1107 | 4301436 | file_ptr -> fx_file_current_relative_sector = | |
| 1108 | 4301436 | (file_ptr -> fx_file_current_relative_sector + (sectors - 1)) % | |
| 1109 | 4301436 | media_ptr -> fx_media_sectors_per_cluster; | |
| 1110 | |||
| 1111 | /* Increment the logical sector byte offset. */ | ||
| 1112 | 4301436 | file_ptr -> fx_file_current_logical_offset = | |
| 1113 | 4301436 | media_ptr -> fx_media_bytes_per_sector; | |
| 1114 | |||
| 1115 | 4301436 | file_ptr -> fx_file_current_physical_cluster = cluster; | |
| 1116 | |||
| 1117 | /* Adjust the remaining bytes. */ | ||
| 1118 | 4301436 | bytes_remaining = bytes_remaining - | |
| 1119 | 4301436 | (((ULONG)media_ptr -> fx_media_bytes_per_sector) * sectors); | |
| 1120 | |||
| 1121 | /* Adjust the pointer to the source buffer. */ | ||
| 1122 | 4301436 | source_ptr = source_ptr + | |
| 1123 | 4301436 | (((ULONG)media_ptr -> fx_media_bytes_per_sector) * sectors); | |
| 1124 | } | ||
| 1125 | |||
| 1126 | /* At this point, we have either written a partial sector or have successfully | ||
| 1127 | written one or more whole sectors. Determine if we are at the end of | ||
| 1128 | the current logical sector. */ | ||
| 1129 | 165609452 | if (file_ptr -> fx_file_current_logical_offset >= | |
| 1130 |
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|
165609452 | media_ptr -> fx_media_bytes_per_sector) |
| 1131 | { | ||
| 1132 | |||
| 1133 | /* Determine if we are at the exact physical end of the file. */ | ||
| 1134 |
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|
8381309 | if ((bytes_remaining == 0) && |
| 1135 | 4677776 | ((file_ptr -> fx_file_current_file_offset + size) >= | |
| 1136 |
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|
4677776 | file_ptr -> fx_file_current_available_size)) |
| 1137 | { | ||
| 1138 | |||
| 1139 | /* Skip the following file parameter adjustments. The next write will | ||
| 1140 | detect the logical offset out of the range of the sector and reset | ||
| 1141 | all of the pertinent information. */ | ||
| 1142 | 2426758 | break; | |
| 1143 | } | ||
| 1144 | |||
| 1145 | /* We need to move to the next logical sector, but first | ||
| 1146 | determine if the next logical sector is within the same | ||
| 1147 | cluster. */ | ||
| 1148 | |||
| 1149 | /* Increment the current relative sector in the cluster. */ | ||
| 1150 | 5954551 | file_ptr -> fx_file_current_relative_sector++; | |
| 1151 | |||
| 1152 | /* Determine if this is in a new cluster. */ | ||
| 1153 | 5954551 | if (file_ptr -> fx_file_current_relative_sector >= | |
| 1154 |
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|
5954551 | media_ptr -> fx_media_sectors_per_cluster) |
| 1155 | { | ||
| 1156 | |||
| 1157 | /* Yes, we need to move to the next cluster. */ | ||
| 1158 | |||
| 1159 | /* Read the FAT entry of the current cluster to find | ||
| 1160 | the next cluster. */ | ||
| 1161 | 2022970 | status = _fx_utility_FAT_entry_read(media_ptr, | |
| 1162 | file_ptr -> fx_file_current_physical_cluster, &next_cluster); | ||
| 1163 | |||
| 1164 | /* Determine if an error is present. */ | ||
| 1165 |
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|
2022970 | if ((status != FX_SUCCESS) || (next_cluster < FX_FAT_ENTRY_START) || |
| 1166 |
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|
2014341 | (next_cluster > media_ptr -> fx_media_fat_reserved)) |
| 1167 | { | ||
| 1168 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 1169 | 26622 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 1170 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 1171 | |||
| 1172 | /* Release media protection. */ | ||
| 1173 | 30117 | FX_UNPROTECT | |
| 1174 | |||
| 1175 | /* Send error message back to caller. */ | ||
| 1176 |
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|
55874 | if (status != FX_SUCCESS) |
| 1177 | { | ||
| 1178 | 8620 | return(status); | |
| 1179 | } | ||
| 1180 | else | ||
| 1181 | { | ||
| 1182 | 47254 | return(FX_FILE_CORRUPT); | |
| 1183 | } | ||
| 1184 | } | ||
| 1185 | |||
| 1186 | /* Otherwise, we have a new cluster. Save it in the file | ||
| 1187 | control block and calculate a new logical sector value. */ | ||
| 1188 | 1967096 | file_ptr -> fx_file_current_physical_cluster = next_cluster; | |
| 1189 | 1967096 | file_ptr -> fx_file_current_relative_cluster++; | |
| 1190 | 1967096 | file_ptr -> fx_file_current_logical_sector = ((ULONG)media_ptr -> fx_media_data_sector_start) + | |
| 1191 | 1967096 | ((((ULONG64)next_cluster) - FX_FAT_ENTRY_START) * | |
| 1192 | 1967096 | ((ULONG)media_ptr -> fx_media_sectors_per_cluster)); | |
| 1193 | 1967096 | file_ptr -> fx_file_current_relative_sector = 0; | |
| 1194 | } | ||
| 1195 | else | ||
| 1196 | { | ||
| 1197 | |||
| 1198 | /* Still within the same cluster so just increment the | ||
| 1199 | logical sector. */ | ||
| 1200 | 3931581 | file_ptr -> fx_file_current_logical_sector++; | |
| 1201 | } | ||
| 1202 | |||
| 1203 | /* In either case, we are now positioned at a new sector so | ||
| 1204 | clear the logical sector offset. */ | ||
| 1205 | 5898677 | file_ptr -> fx_file_current_logical_offset = 0; | |
| 1206 | } | ||
| 1207 | } | ||
| 1208 | |||
| 1209 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 1210 |
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|
159022401 | if (((replace_clusters > 0) && (data_append == FX_FALSE)) && |
| 1211 |
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|
1312805 | (file_ptr -> fx_file_current_logical_offset || file_ptr -> fx_file_current_relative_sector)) |
| 1212 | { | ||
| 1213 | |||
| 1214 | /* Copy sectors in replaced cluster but not overwritten at the end. */ | ||
| 1215 |
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|
1312560 | if (file_ptr -> fx_file_current_logical_offset == 0) |
| 1216 | { | ||
| 1217 | 1685 | i = file_ptr -> fx_file_current_relative_sector; | |
| 1218 | } | ||
| 1219 | else | ||
| 1220 | { | ||
| 1221 | 1310875 | i = file_ptr -> fx_file_current_relative_sector + 1; | |
| 1222 | } | ||
| 1223 |
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|
4469802 | for (; i < media_ptr -> fx_media_sectors_per_cluster; i++) |
| 1224 | { | ||
| 1225 | 3157254 | status = _fx_utility_logical_sector_read(media_ptr, | |
| 1226 | 3157254 | ((ULONG)media_ptr -> fx_media_data_sector_start) + | |
| 1227 | 3157254 | (((ULONG)(copy_tail_cluster - FX_FAT_ENTRY_START)) * | |
| 1228 | 3157254 | ((ULONG)media_ptr -> fx_media_sectors_per_cluster)) + i, | |
| 1229 | 3157254 | media_ptr -> fx_media_memory_buffer, ((ULONG) 1), FX_DATA_SECTOR); | |
| 1230 | |||
| 1231 | /* Check for good completion status. */ | ||
| 1232 |
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|
3157254 | if (status != FX_SUCCESS) |
| 1233 | { | ||
| 1234 | |||
| 1235 | 8 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 1236 | |||
| 1237 | /* Release media protection. */ | ||
| 1238 | 4 | FX_UNPROTECT | |
| 1239 | |||
| 1240 | /* Return the error status. */ | ||
| 1241 | 8 | return(status); | |
| 1242 | } | ||
| 1243 | |||
| 1244 | /* Write back the current logical sector. */ | ||
| 1245 | 3157246 | status = _fx_utility_logical_sector_write(media_ptr, | |
| 1246 | 3157246 | ((ULONG)media_ptr -> fx_media_data_sector_start) + | |
| 1247 | 3157246 | (((ULONG)(file_ptr -> fx_file_current_physical_cluster - FX_FAT_ENTRY_START)) * | |
| 1248 | 3157246 | ((ULONG)media_ptr -> fx_media_sectors_per_cluster)) + i, | |
| 1249 | 3157246 | media_ptr -> fx_media_memory_buffer, ((ULONG) 1), FX_DATA_SECTOR); | |
| 1250 | |||
| 1251 | /* Check for good completion status. */ | ||
| 1252 |
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|
3157246 | if (status != FX_SUCCESS) |
| 1253 | { | ||
| 1254 | |||
| 1255 | 4 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 1256 | |||
| 1257 | /* Release media protection. */ | ||
| 1258 | 2 | FX_UNPROTECT | |
| 1259 | |||
| 1260 | /* Return the error status. */ | ||
| 1261 | 4 | return(status); | |
| 1262 | } | ||
| 1263 | } | ||
| 1264 | } | ||
| 1265 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 1266 | |||
| 1267 | /* Adjust the current file offset accordingly. */ | ||
| 1268 | 161873795 | file_ptr -> fx_file_current_file_offset = | |
| 1269 | 161873795 | file_ptr -> fx_file_current_file_offset + size; | |
| 1270 | |||
| 1271 | /* Copy the new file size into the directory entry. */ | ||
| 1272 | 161873795 | file_ptr -> fx_file_dir_entry.fx_dir_entry_file_size = | |
| 1273 | 161873795 | file_ptr -> fx_file_current_file_size; | |
| 1274 | |||
| 1275 | /* Determine if this write was done past the previous file size. */ | ||
| 1276 | 161873795 | if (file_ptr -> fx_file_current_file_offset > | |
| 1277 |
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|
161873795 | file_ptr -> fx_file_current_file_size) |
| 1278 | { | ||
| 1279 | |||
| 1280 | /* Yes, we have written past the previous end of the file. Update | ||
| 1281 | the file size. */ | ||
| 1282 | 160197272 | file_ptr -> fx_file_current_file_size = file_ptr -> fx_file_current_file_offset; | |
| 1283 | |||
| 1284 | #ifndef FX_DONT_UPDATE_OPEN_FILES | ||
| 1285 | |||
| 1286 | /* Search the opened files list to see if the same file is opened for reading. */ | ||
| 1287 | 160197272 | open_count = media_ptr -> fx_media_opened_file_count; | |
| 1288 | 160197272 | search_ptr = media_ptr -> fx_media_opened_file_list; | |
| 1289 |
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|
323236951 | while (open_count) |
| 1290 | { | ||
| 1291 | |||
| 1292 | /* Is this file the same file opened for reading? */ | ||
| 1293 |
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|
163039679 | if ((search_ptr != file_ptr) && |
| 1294 | 2842407 | (search_ptr -> fx_file_dir_entry.fx_dir_entry_log_sector == | |
| 1295 |
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|
2842407 | file_ptr -> fx_file_dir_entry.fx_dir_entry_log_sector) && |
| 1296 | 2751471 | (search_ptr -> fx_file_dir_entry.fx_dir_entry_byte_offset == | |
| 1297 |
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|
2751471 | file_ptr -> fx_file_dir_entry.fx_dir_entry_byte_offset)) |
| 1298 | { | ||
| 1299 | |||
| 1300 | /* Yes, the same file is opened for reading. */ | ||
| 1301 | |||
| 1302 | /* Setup the new size. */ | ||
| 1303 | 721238 | search_ptr -> fx_file_current_file_size = file_ptr -> fx_file_current_file_offset; | |
| 1304 | |||
| 1305 | /* Setup the new directory entry. */ | ||
| 1306 | 721238 | search_ptr -> fx_file_dir_entry.fx_dir_entry_cluster = file_ptr -> fx_file_dir_entry.fx_dir_entry_cluster; | |
| 1307 | 721238 | search_ptr -> fx_file_dir_entry.fx_dir_entry_file_size = file_ptr -> fx_file_dir_entry.fx_dir_entry_file_size; | |
| 1308 | 721238 | search_ptr -> fx_file_dir_entry.fx_dir_entry_log_sector = file_ptr -> fx_file_dir_entry.fx_dir_entry_log_sector; | |
| 1309 | 721238 | search_ptr -> fx_file_dir_entry.fx_dir_entry_byte_offset = file_ptr -> fx_file_dir_entry.fx_dir_entry_byte_offset; | |
| 1310 | |||
| 1311 | /* Setup the last cluster. This really isn't used during reading, but it is nice to keep things | ||
| 1312 | consistent. */ | ||
| 1313 | 721238 | search_ptr -> fx_file_last_physical_cluster = file_ptr -> fx_file_last_physical_cluster; | |
| 1314 | |||
| 1315 | /* Update the available clusters as well. */ | ||
| 1316 | 721238 | search_ptr -> fx_file_current_available_size = file_ptr -> fx_file_current_available_size; | |
| 1317 | |||
| 1318 | /* Determine if an empty file was previously opened. */ | ||
| 1319 |
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|
721238 | if (search_ptr -> fx_file_total_clusters == 0) |
| 1320 | { | ||
| 1321 | |||
| 1322 | /* Setup initial parameters. */ | ||
| 1323 | 90 | search_ptr -> fx_file_total_clusters = file_ptr -> fx_file_total_clusters; | |
| 1324 | 90 | search_ptr -> fx_file_current_physical_cluster = file_ptr -> fx_file_first_physical_cluster; | |
| 1325 | 90 | search_ptr -> fx_file_current_relative_cluster = 0; | |
| 1326 | 90 | search_ptr -> fx_file_current_logical_sector = ((ULONG)media_ptr -> fx_media_data_sector_start) + | |
| 1327 | 90 | (((ULONG64)(file_ptr -> fx_file_first_physical_cluster - FX_FAT_ENTRY_START)) * | |
| 1328 | 90 | ((ULONG)media_ptr -> fx_media_sectors_per_cluster)); | |
| 1329 | 90 | search_ptr -> fx_file_current_relative_sector = 0; | |
| 1330 | 90 | search_ptr -> fx_file_current_logical_offset = 0; | |
| 1331 | 90 | search_ptr -> fx_file_current_file_offset = 0; | |
| 1332 | } | ||
| 1333 | } | ||
| 1334 | |||
| 1335 | /* Adjust the pointer and decrement the search count. */ | ||
| 1336 | 163039679 | search_ptr = search_ptr -> fx_file_opened_next; | |
| 1337 | 163039679 | open_count--; | |
| 1338 | } | ||
| 1339 | #endif | ||
| 1340 | } | ||
| 1341 | |||
| 1342 | /* Finally, mark this file as modified. */ | ||
| 1343 | 161873795 | file_ptr -> fx_file_modified = FX_TRUE; | |
| 1344 | |||
| 1345 | #ifdef FX_FAULT_TOLERANT_DATA | ||
| 1346 | |||
| 1347 | /* Ensure that all file data is flushed out. */ | ||
| 1348 | |||
| 1349 | /* Flush the internal logical sector cache. */ | ||
| 1350 | 159022389 | _fx_utility_logical_sector_flush(media_ptr, 1, media_ptr -> fx_media_total_sectors, FX_FALSE); | |
| 1351 | |||
| 1352 | /* Lockout interrupts for time/date access. */ | ||
| 1353 | 81211417 | FX_DISABLE_INTS | |
| 1354 | |||
| 1355 | /* Set the new time and date. */ | ||
| 1356 | 159022386 | file_ptr -> fx_file_dir_entry.fx_dir_entry_time = _fx_system_time; | |
| 1357 | 159022386 | file_ptr -> fx_file_dir_entry.fx_dir_entry_date = _fx_system_date; | |
| 1358 | |||
| 1359 | /* Restore interrupts. */ | ||
| 1360 | 81211415 | FX_RESTORE_INTS | |
| 1361 | |||
| 1362 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 1363 |
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|
159022386 | if (media_ptr -> fx_media_fault_tolerant_enabled) |
| 1364 | { | ||
| 1365 | |||
| 1366 | /* Copy the new file size into the directory entry. */ | ||
| 1367 | 156735750 | file_ptr -> fx_file_dir_entry.fx_dir_entry_file_size = file_ptr -> fx_file_current_file_size; | |
| 1368 | } | ||
| 1369 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 1370 | |||
| 1371 | /* Write the directory entry to the media. */ | ||
| 1372 | 159022386 | status = _fx_directory_entry_write(media_ptr, &(file_ptr -> fx_file_dir_entry)); | |
| 1373 | |||
| 1374 | /* Check for a good status. */ | ||
| 1375 |
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|
159022386 | if (status != FX_SUCCESS) |
| 1376 | { | ||
| 1377 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 1378 | 44096 | FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); | |
| 1379 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 1380 | |||
| 1381 | /* Release media protection. */ | ||
| 1382 | 22048 | FX_UNPROTECT | |
| 1383 | |||
| 1384 | /* Error writing the directory. */ | ||
| 1385 | 44096 | return(status); | |
| 1386 | } | ||
| 1387 | #endif | ||
| 1388 | |||
| 1389 | /* Update the trace event with the bytes written. */ | ||
| 1390 | FX_TRACE_EVENT_UPDATE(trace_event, trace_timestamp, FX_TRACE_FILE_WRITE, 0, 0, 0, size) | ||
| 1391 | |||
| 1392 | #ifdef FX_ENABLE_FAULT_TOLERANT | ||
| 1393 | /* End transaction. */ | ||
| 1394 | 158978290 | status = _fx_fault_tolerant_transaction_end(media_ptr); | |
| 1395 | |||
| 1396 | /* Check for a bad status. */ | ||
| 1397 |
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|
158978121 | if (status != FX_SUCCESS) |
| 1398 | { | ||
| 1399 | |||
| 1400 | /* Release media protection. */ | ||
| 1401 | 3 | FX_UNPROTECT | |
| 1402 | |||
| 1403 | /* Return the bad status. */ | ||
| 1404 | 6 | return(status); | |
| 1405 | } | ||
| 1406 | |||
| 1407 | /* Update maximum size used if necessary. */ | ||
| 1408 |
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158978115 | if (file_ptr -> fx_file_current_file_offset > file_ptr -> fx_file_maximum_size_used) |
| 1409 | { | ||
| 1410 | 157301937 | file_ptr -> fx_file_maximum_size_used = file_ptr -> fx_file_current_file_offset; | |
| 1411 | } | ||
| 1412 | #endif /* FX_ENABLE_FAULT_TOLERANT */ | ||
| 1413 | |||
| 1414 | /* Invoke file write callback. */ | ||
| 1415 |
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161829521 | if (file_ptr -> fx_file_write_notify) |
| 1416 | { | ||
| 1417 | 9 | file_ptr -> fx_file_write_notify(file_ptr); | |
| 1418 | } | ||
| 1419 | |||
| 1420 | /* Release media protection. */ | ||
| 1421 | 82902085 | FX_UNPROTECT | |
| 1422 | |||
| 1423 | /* Return a successful status to the caller. */ | ||
| 1424 | 161829520 | return(FX_SUCCESS); | |
| 1425 | } | ||
| 1426 | |||
| 1427 |