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/**************************************************************************/ |
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/* */ |
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/* Copyright (c) Microsoft Corporation. All rights reserved. */ |
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/* */ |
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/* This software is licensed under the Microsoft Software License */ |
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/* Terms for Microsoft Azure RTOS. Full text of the license can be */ |
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/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */ |
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/* and in the root directory of this software. */ |
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/* */ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/** */ |
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/** FileX Component */ |
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/** */ |
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/** Directory */ |
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/** */ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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#define FX_SOURCE_CODE |
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/* Include necessary system files. */ |
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#include "fx_api.h" |
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#include "fx_system.h" |
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#include "fx_directory.h" |
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#include "fx_file.h" |
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#include "fx_utility.h" |
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#ifdef FX_ENABLE_FAULT_TOLERANT |
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#include "fx_fault_tolerant.h" |
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#endif /* FX_ENABLE_FAULT_TOLERANT */ |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _fx_directory_create PORTABLE C */ |
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/* 6.1 */ |
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/* AUTHOR */ |
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/* */ |
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/* William E. Lamie, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function first attempts to find the specified directory. */ |
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/* If found, the create request is invalid and an error is returned */ |
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/* to the caller. After the file name verification is made, a search */ |
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/* for a free directory entry will be made. If nothing is available, */ |
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/* an error will be returned to the caller. Otherwise, if all is */ |
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/* okay, an empty directory will be created. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* media_ptr Media control block pointer */ |
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/* directory_name Directory name */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* return status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _fx_directory_entry_write Write the new directory entry */ |
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/* _fx_directory_name_extract Pickup next part of name */ |
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/* _fx_directory_search Search for the file name in */ |
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/* the directory structure */ |
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/* _fx_directory_free_search Search for a free directory */ |
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/* entry */ |
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/* _fx_utility_exFAT_bitmap_free_cluster_find */ |
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/* Find exFAT free cluster */ |
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/* _fx_utility_exFAT_cluster_state_set Set cluster state */ |
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/* _fx_utility_FAT_flush Flush written FAT entries */ |
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/* _fx_utility_FAT_entry_read Read a FAT entry */ |
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/* _fx_utility_FAT_entry_write Write a FAT entry */ |
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/* _fx_utility_logical_sector_flush Flush the written log sector */ |
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/* _fx_utility_logical_sector_read Read logical sector */ |
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/* _fx_fault_tolerant_transaction_start Start fault tolerant */ |
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/* transaction */ |
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/* _fx_fault_tolerant_transaction_end End fault tolerant transaction*/ |
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/* _fx_fault_tolerant_recover Recover FAT chain */ |
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/* _fx_fault_tolerant_reset_log_file Reset the log file */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application Code */ |
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/* */ |
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/* RELEASE HISTORY */ |
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/* */ |
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/* DATE NAME DESCRIPTION */ |
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/* */ |
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/* 05-19-2020 William E. Lamie Initial Version 6.0 */ |
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/* 09-30-2020 William E. Lamie Modified comment(s), */ |
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/* resulting in version 6.1 */ |
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/* */ |
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/**************************************************************************/ |
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22143 |
UINT _fx_directory_create(FX_MEDIA *media_ptr, CHAR *directory_name) |
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{ |
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UINT status; |
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ULONG FAT_index; |
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ULONG FAT_value; |
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UINT sectors; |
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ULONG total_clusters; |
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CHAR *work_ptr; |
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ULONG64 logical_sector; |
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ULONG i; |
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FX_DIR_ENTRY dir_entry; |
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FX_DIR_ENTRY sub_dir_entry; |
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FX_DIR_ENTRY search_directory; |
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#ifdef FX_ENABLE_EXFAT |
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ULONG64 dir_size; |
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#endif /* FX_ENABLE_EXFAT */ |
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FX_INT_SAVE_AREA |
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#ifndef FX_MEDIA_STATISTICS_DISABLE |
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/* Increment the number of times this service has been called. */ |
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media_ptr -> fx_media_directory_creates++; |
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#endif |
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/* Determine if the supplied name is less than the maximum supported name size. The |
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maximum name (FX_MAX_LONG_NAME_LEN) is defined in fx_api.h. */ |
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i = 0; |
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work_ptr = (CHAR *)directory_name; |
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✓✓✓✓
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128139 |
while (*work_ptr && (i < FX_MAX_LONG_NAME_LEN)) |
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{ |
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/* Determine if the character designates a new path. */ |
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✓✓✓✓
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if ((*work_ptr == '\\') || (*work_ptr == '/')) |
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{ |
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/* Yes, reset the name size. */ |
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i = 0; |
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} |
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/* Check for leading spaces. */ |
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✓✓✓✓
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else if ((*work_ptr != ' ') || (i != 0)) |
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{ |
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/* No leading spaces, increment the name size. */ |
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105151 |
i++; |
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} |
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/* Move to the next character. */ |
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105996 |
work_ptr++; |
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} |
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/* Determine if the supplied name is valid. */ |
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✓✓✓✓
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if ((i == 0) || (i >= FX_MAX_LONG_NAME_LEN)) |
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{ |
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/* Return an invalid name value. */ |
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return(FX_INVALID_NAME); |
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} |
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/* Setup pointer to media name buffer. */ |
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dir_entry.fx_dir_entry_name = media_ptr -> fx_media_name_buffer + FX_MAX_LONG_NAME_LEN; |
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/* Setup search directory pointer to another media name buffer. */ |
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22141 |
search_directory.fx_dir_entry_name = media_ptr -> fx_media_name_buffer + FX_MAX_LONG_NAME_LEN * 2; |
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/* Clear the short name string. */ |
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dir_entry.fx_dir_entry_short_name[0] = 0; |
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/* Clear the search short name string. */ |
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search_directory.fx_dir_entry_short_name[0] = 0; |
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/* Check the media to make sure it is open. */ |
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✓✓ |
22141 |
if (media_ptr -> fx_media_id != FX_MEDIA_ID) |
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{ |
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/* Return the media not opened error. */ |
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return(FX_MEDIA_NOT_OPEN); |
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} |
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/* If trace is enabled, insert this event into the trace buffer. */ |
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FX_TRACE_IN_LINE_INSERT(FX_TRACE_DIRECTORY_CREATE, media_ptr, directory_name, 0, 0, FX_TRACE_DIRECTORY_EVENTS, 0, 0) |
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/* Protect against other threads accessing the media. */ |
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FX_PROTECT |
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/* Check for write protect at the media level (set by driver). */ |
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✓✓ |
22140 |
if (media_ptr -> fx_media_driver_write_protect) |
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{ |
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/* Release media protection. */ |
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FX_UNPROTECT |
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/* Return write protect error. */ |
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return(FX_WRITE_PROTECT); |
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} |
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/* Make sure there is at least one cluster remaining for the new file. */ |
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✓✓ |
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if (!media_ptr -> fx_media_available_clusters) |
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{ |
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/* Release media protection. */ |
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FX_UNPROTECT |
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/* Return a no-space error. */ |
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return(FX_NO_MORE_SPACE); |
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} |
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/* Search the system for the supplied directory name. */ |
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status = _fx_directory_search(media_ptr, directory_name, &dir_entry, &search_directory, &work_ptr); |
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/* Determine if the search was successful. */ |
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✓✓ |
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if (status == FX_SUCCESS) |
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{ |
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/* Release media protection. */ |
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FX_UNPROTECT |
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/* Directory found - Return the error code. */ |
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return(FX_ALREADY_CREATED); |
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} |
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/* Determine if there is anything left after the name. */ |
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✓✓ |
19851 |
if (_fx_directory_name_extract(work_ptr, &dir_entry.fx_dir_entry_name[0])) |
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{ |
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/* Release media protection. */ |
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FX_UNPROTECT |
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/* Extra information after the file name, return an invalid name |
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error. */ |
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return(FX_INVALID_PATH); |
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} |
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#ifdef FX_ENABLE_EXFAT |
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if (media_ptr -> fx_media_FAT_type == FX_exFAT) |
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{ |
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if (((dir_entry.fx_dir_entry_name[0] == '.') && (dir_entry.fx_dir_entry_name[1] == 0)) || |
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((dir_entry.fx_dir_entry_name[0] == '.') && (dir_entry.fx_dir_entry_name[1] == '.') && (dir_entry.fx_dir_entry_name[2] == 0))) |
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{ |
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/* Release media protection. */ |
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FX_UNPROTECT |
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/* We don't need '.' or '..' dirs for exFAT. */ |
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return(FX_ALREADY_CREATED); |
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} |
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} |
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/* Save the directory entry size. */ |
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dir_size = search_directory.fx_dir_entry_file_size; |
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#endif /* FX_ENABLE_EXFAT */ |
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#ifdef FX_ENABLE_FAULT_TOLERANT |
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/* Start transaction. */ |
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_fx_fault_tolerant_transaction_start(media_ptr); |
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#endif /* FX_ENABLE_FAULT_TOLERANT */ |
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/* Find a free slot for the new directory. */ |
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19850 |
status = _fx_directory_free_search(media_ptr, &search_directory, &dir_entry); |
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262 |
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/* Determine if the search was successful. */ |
263 |
✓✓ |
19850 |
if (status != FX_SUCCESS) |
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{ |
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#ifdef FX_ENABLE_FAULT_TOLERANT |
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FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
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#endif /* FX_ENABLE_FAULT_TOLERANT */ |
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/* Release media protection. */ |
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FX_UNPROTECT |
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/* Return the error code. */ |
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return(status); |
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} |
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/* Now allocate a cluster for our new sub-directory entry. */ |
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#ifdef FX_ENABLE_EXFAT |
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if (media_ptr -> fx_media_FAT_type == FX_exFAT) |
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{ |
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/* Find free cluster from exFAT media. */ |
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status = _fx_utility_exFAT_bitmap_free_cluster_find(media_ptr, |
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media_ptr -> fx_media_cluster_search_start, |
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&FAT_index); |
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/* Check for a bad status. */ |
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if (status != FX_SUCCESS) |
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{ |
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291 |
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#ifdef FX_ENABLE_FAULT_TOLERANT |
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FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
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#endif /* FX_ENABLE_FAULT_TOLERANT */ |
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/* Release media protection. */ |
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FX_UNPROTECT |
297 |
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298 |
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/* Return the bad status. */ |
299 |
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return(status); |
300 |
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} |
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} |
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else |
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{ |
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#endif /* FX_ENABLE_EXFAT */ |
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19764 |
FAT_index = media_ptr -> fx_media_cluster_search_start; |
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19764 |
total_clusters = media_ptr -> fx_media_total_clusters; |
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309 |
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/* Loop to find the first available cluster. */ |
310 |
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do |
311 |
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{ |
312 |
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313 |
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/* Make sure we don't go past the FAT table. */ |
314 |
✓✓ |
19766 |
if (!total_clusters) |
315 |
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{ |
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317 |
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#ifdef FX_ENABLE_FAULT_TOLERANT |
318 |
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FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
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#endif /* FX_ENABLE_FAULT_TOLERANT */ |
320 |
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321 |
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/* Release media protection. */ |
322 |
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1 |
FX_UNPROTECT |
323 |
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324 |
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/* Something is wrong with the media - the desired clusters were |
325 |
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not found in the FAT table. */ |
326 |
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1 |
return(FX_NO_MORE_SPACE); |
327 |
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} |
328 |
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329 |
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/* Read FAT entry. */ |
330 |
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19765 |
status = _fx_utility_FAT_entry_read(media_ptr, FAT_index, &FAT_value); |
331 |
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332 |
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/* Check for a bad status. */ |
333 |
✓✓ |
19765 |
if (status != FX_SUCCESS) |
334 |
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{ |
335 |
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336 |
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#ifdef FX_ENABLE_FAULT_TOLERANT |
337 |
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FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
338 |
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#endif /* FX_ENABLE_FAULT_TOLERANT */ |
339 |
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340 |
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/* Release media protection. */ |
341 |
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1 |
FX_UNPROTECT |
342 |
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343 |
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/* Return the bad status. */ |
344 |
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1 |
return(status); |
345 |
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} |
346 |
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347 |
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/* Decrement the total cluster count. */ |
348 |
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19764 |
total_clusters--; |
349 |
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350 |
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/* Determine if the FAT entry is free. */ |
351 |
✓✓ |
19764 |
if (FAT_value == FX_FREE_CLUSTER) |
352 |
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{ |
353 |
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354 |
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/* Move cluster search pointer forward. */ |
355 |
|
19762 |
media_ptr -> fx_media_cluster_search_start = FAT_index + 1; |
356 |
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357 |
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/* Determine if this needs to be wrapped. */ |
358 |
✓✓ |
19762 |
if (media_ptr -> fx_media_cluster_search_start >= (media_ptr -> fx_media_total_clusters + FX_FAT_ENTRY_START)) |
359 |
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{ |
360 |
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361 |
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/* Wrap the search to the beginning FAT entry. */ |
362 |
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1 |
media_ptr -> fx_media_cluster_search_start = FX_FAT_ENTRY_START; |
363 |
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} |
364 |
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365 |
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/* Break this loop. */ |
366 |
|
19762 |
break; |
367 |
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} |
368 |
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else |
369 |
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{ |
370 |
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371 |
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/* FAT entry is not free... Advance the FAT index. */ |
372 |
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2 |
FAT_index++; |
373 |
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374 |
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/* Determine if we need to wrap the FAT index around. */ |
375 |
✓✓ |
2 |
if (FAT_index >= (media_ptr -> fx_media_total_clusters + FX_FAT_ENTRY_START)) |
376 |
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{ |
377 |
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378 |
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/* Wrap the search to the beginning FAT entry. */ |
379 |
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1 |
FAT_index = FX_FAT_ENTRY_START; |
380 |
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} |
381 |
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} |
382 |
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} while (FX_TRUE); |
383 |
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#ifdef FX_ENABLE_EXFAT |
384 |
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} |
385 |
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#endif /* FX_ENABLE_EXFAT */ |
386 |
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387 |
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/* Decrease the number of available clusters for the media. */ |
388 |
|
19762 |
media_ptr -> fx_media_available_clusters--; |
389 |
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390 |
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/* Defer the writing of the FAT entry until the directory's first sector |
391 |
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|
has been properly written. If a power loss occurs prior to writing |
392 |
|
|
the FAT entry, it will not result in a lost cluster. */ |
393 |
|
|
|
394 |
|
|
/* Populate the directory entry. */ |
395 |
|
|
|
396 |
|
|
/* Isolate the file name. */ |
397 |
|
19762 |
_fx_directory_name_extract(work_ptr, &dir_entry.fx_dir_entry_name[0]); |
398 |
|
|
|
399 |
|
|
/* Lockout interrupts for time/date access. */ |
400 |
|
19762 |
FX_DISABLE_INTS |
401 |
|
|
|
402 |
|
|
/* Set time and date stamps. */ |
403 |
|
19762 |
dir_entry.fx_dir_entry_time = _fx_system_time; |
404 |
|
19762 |
dir_entry.fx_dir_entry_date = _fx_system_date; |
405 |
|
|
|
406 |
|
|
/* Restore interrupts. */ |
407 |
|
19762 |
FX_RESTORE_INTS |
408 |
|
|
|
409 |
|
|
/* Set the attributes for the file. */ |
410 |
|
19762 |
dir_entry.fx_dir_entry_attributes = FX_DIRECTORY; |
411 |
|
|
|
412 |
|
|
#ifdef FX_ENABLE_EXFAT |
413 |
|
|
if (media_ptr -> fx_media_FAT_type == FX_exFAT) |
414 |
|
|
{ |
415 |
|
|
dir_entry.fx_dir_entry_file_size = |
416 |
|
|
media_ptr -> fx_media_sectors_per_cluster * media_ptr -> fx_media_bytes_per_sector; |
417 |
|
|
dir_entry.fx_dir_entry_available_file_size = dir_entry.fx_dir_entry_file_size; |
418 |
|
|
|
419 |
|
|
/* Don't use FAT by default. */ |
420 |
|
|
dir_entry.fx_dir_entry_dont_use_fat = (CHAR)((INT)((search_directory.fx_dir_entry_dont_use_fat & 1) << 1) | 1); |
421 |
|
|
} |
422 |
|
|
else |
423 |
|
|
{ |
424 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
425 |
|
|
|
426 |
|
|
/* Set file size to 0. */ |
427 |
|
19762 |
dir_entry.fx_dir_entry_file_size = 0; |
428 |
|
|
|
429 |
|
|
#ifdef FX_ENABLE_EXFAT |
430 |
|
|
} |
431 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
432 |
|
|
|
433 |
|
|
/* Set the cluster to EOF. */ |
434 |
|
19762 |
dir_entry.fx_dir_entry_cluster = FAT_index; |
435 |
|
|
|
436 |
|
|
/* Is there a leading dot? */ |
437 |
✓✓ |
19762 |
if (dir_entry.fx_dir_entry_name[0] == '.') |
438 |
|
|
{ |
439 |
|
|
|
440 |
|
|
/* Yes, toggle the hidden attribute bit. */ |
441 |
|
2 |
dir_entry.fx_dir_entry_attributes |= FX_HIDDEN; |
442 |
|
|
} |
443 |
|
|
|
444 |
|
|
/* In previous versions, the new directory was written here. It |
445 |
|
|
is now at the bottom of the file - after the FAT and the initial |
446 |
|
|
sub-directory is written out. This makes the directory create |
447 |
|
|
more fault tolerant. */ |
448 |
|
|
|
449 |
|
|
/* Calculate the first sector of the sub-directory file. */ |
450 |
|
19762 |
logical_sector = ((ULONG) media_ptr -> fx_media_data_sector_start) + |
451 |
|
19762 |
(((ULONG64) FAT_index - FX_FAT_ENTRY_START) * |
452 |
|
19762 |
((ULONG) media_ptr -> fx_media_sectors_per_cluster)); |
453 |
|
|
|
454 |
|
|
/* Pickup the number of sectors for the initial sub-directory cluster. */ |
455 |
|
19762 |
sectors = media_ptr -> fx_media_sectors_per_cluster; |
456 |
|
|
|
457 |
|
|
/* Read the first logical sector associated with the allocated |
458 |
|
|
cluster. */ |
459 |
|
19762 |
status = _fx_utility_logical_sector_read(media_ptr, logical_sector, |
460 |
|
19762 |
media_ptr -> fx_media_memory_buffer, ((ULONG) 1), FX_DIRECTORY_SECTOR); |
461 |
|
|
|
462 |
|
|
/* Determine if an error occurred. */ |
463 |
✓✓ |
19762 |
if (status != FX_SUCCESS) |
464 |
|
|
{ |
465 |
|
|
|
466 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
467 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
468 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
469 |
|
|
|
470 |
|
|
/* Release media protection. */ |
471 |
|
1 |
FX_UNPROTECT |
472 |
|
|
|
473 |
|
|
/* Return error code. */ |
474 |
|
1 |
return(status); |
475 |
|
|
} |
476 |
|
|
|
477 |
|
|
/* Clear the entire first sector of the new sub-directory cluster. */ |
478 |
|
19761 |
work_ptr = (CHAR *)media_ptr -> fx_media_memory_buffer; |
479 |
|
19761 |
i = 0; |
480 |
✓✓ |
656145 |
while (i < media_ptr -> fx_media_bytes_per_sector) |
481 |
|
|
{ |
482 |
|
|
|
483 |
|
|
/* Clear 4 bytes. */ |
484 |
|
636384 |
*((ULONG *)work_ptr) = (ULONG)0; |
485 |
|
|
|
486 |
|
|
/* Increment pointer. */ |
487 |
|
636384 |
work_ptr = work_ptr + sizeof(ULONG); |
488 |
|
|
|
489 |
|
|
/* Increment counter. */ |
490 |
|
636384 |
i = i + (ULONG)sizeof(ULONG); |
491 |
|
|
} |
492 |
|
|
|
493 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
494 |
|
|
if (media_ptr -> fx_media_fault_tolerant_enabled == FX_TRUE) |
495 |
|
|
{ |
496 |
|
|
|
497 |
|
|
/* Write back. */ |
498 |
|
|
status = _fx_utility_logical_sector_write(media_ptr, logical_sector, |
499 |
|
|
media_ptr -> fx_media_memory_buffer, (ULONG)1, FX_DIRECTORY_SECTOR); |
500 |
|
|
|
501 |
|
|
/* Determine if an error occurred. */ |
502 |
|
|
if (status != FX_SUCCESS) |
503 |
|
|
{ |
504 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
505 |
|
|
|
506 |
|
|
/* Release media protection. */ |
507 |
|
|
FX_UNPROTECT |
508 |
|
|
|
509 |
|
|
/* Return error code. */ |
510 |
|
|
return(status); |
511 |
|
|
} |
512 |
|
|
|
513 |
|
|
/* Force flush the internal logical sector cache. */ |
514 |
|
|
status = _fx_utility_logical_sector_flush(media_ptr, logical_sector, sectors, FX_TRUE); |
515 |
|
|
|
516 |
|
|
/* Determine if the write was successful. */ |
517 |
|
|
if (status != FX_SUCCESS) |
518 |
|
|
{ |
519 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
520 |
|
|
|
521 |
|
|
/* Release media protection. */ |
522 |
|
|
FX_UNPROTECT |
523 |
|
|
|
524 |
|
|
/* Return the error code. */ |
525 |
|
|
return(status); |
526 |
|
|
} |
527 |
|
|
} |
528 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
529 |
|
|
|
530 |
|
|
/* Determine if there are more sectors to clear in the first cluster of the new |
531 |
|
|
sub-directory. */ |
532 |
✓✓ |
19761 |
if (sectors > 1) |
533 |
|
|
{ |
534 |
|
|
|
535 |
|
|
/* Yes, invalidate all cached sectors that are contained in the newly allocated first |
536 |
|
|
cluster of the directory. */ |
537 |
|
|
|
538 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
539 |
|
|
if (media_ptr -> fx_media_fault_tolerant_enabled == FX_FALSE) |
540 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
541 |
|
|
{ |
542 |
|
|
|
543 |
|
|
/* Flush the internal logical sector cache. */ |
544 |
|
146 |
status = _fx_utility_logical_sector_flush(media_ptr, logical_sector + 1, ((ULONG64)(sectors - 1)), FX_TRUE); |
545 |
|
|
|
546 |
|
|
/* Determine if the write was successful. */ |
547 |
✓✓ |
146 |
if (status != FX_SUCCESS) |
548 |
|
|
{ |
549 |
|
|
|
550 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
551 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
552 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
553 |
|
|
|
554 |
|
|
/* Release media protection. */ |
555 |
|
1 |
FX_UNPROTECT |
556 |
|
|
|
557 |
|
|
/* Return the error code. */ |
558 |
|
1 |
return(status); |
559 |
|
|
} |
560 |
|
|
} |
561 |
|
|
|
562 |
|
|
/* Clear all additional sectors of new sub-directory. */ |
563 |
|
145 |
sectors--; |
564 |
✓✓ |
1045 |
while (sectors) |
565 |
|
|
{ |
566 |
|
|
|
567 |
|
|
#ifndef FX_MEDIA_STATISTICS_DISABLE |
568 |
|
|
|
569 |
|
|
/* Increment the number of driver write sector(s) requests. */ |
570 |
|
901 |
media_ptr -> fx_media_driver_write_requests++; |
571 |
|
|
#endif |
572 |
|
|
|
573 |
|
|
/* Build Write request to the driver. */ |
574 |
|
901 |
media_ptr -> fx_media_driver_request = FX_DRIVER_WRITE; |
575 |
|
901 |
media_ptr -> fx_media_driver_status = FX_IO_ERROR; |
576 |
|
901 |
media_ptr -> fx_media_driver_buffer = media_ptr -> fx_media_memory_buffer; |
577 |
|
|
#ifdef FX_DRIVER_USE_64BIT_LBA |
578 |
|
|
media_ptr -> fx_media_driver_logical_sector = logical_sector + ((ULONG)sectors); |
579 |
|
|
#else |
580 |
|
901 |
media_ptr -> fx_media_driver_logical_sector = (ULONG)logical_sector + ((ULONG)sectors); |
581 |
|
|
#endif |
582 |
|
901 |
media_ptr -> fx_media_driver_sectors = 1; |
583 |
|
901 |
media_ptr -> fx_media_driver_sector_type = FX_DIRECTORY_SECTOR; |
584 |
|
|
|
585 |
|
|
/* Set the system write flag since we are writing a directory sector. */ |
586 |
|
901 |
media_ptr -> fx_media_driver_system_write = FX_TRUE; |
587 |
|
|
|
588 |
|
|
/* If trace is enabled, insert this event into the trace buffer. */ |
589 |
|
|
FX_TRACE_IN_LINE_INSERT(FX_TRACE_INTERNAL_IO_DRIVER_WRITE, media_ptr, ((ULONG)logical_sector) + ((ULONG)sectors), 1, media_ptr -> fx_media_memory_buffer, FX_TRACE_INTERNAL_EVENTS, 0, 0) |
590 |
|
|
|
591 |
|
|
/* Invoke the driver to write the sector. */ |
592 |
|
901 |
(media_ptr -> fx_media_driver_entry) (media_ptr); |
593 |
|
|
|
594 |
|
|
/* Clear the system write flag. */ |
595 |
|
901 |
media_ptr -> fx_media_driver_system_write = FX_FALSE; |
596 |
|
|
|
597 |
|
|
/* Determine if an error occurred. */ |
598 |
✓✓ |
901 |
if (media_ptr -> fx_media_driver_status != FX_SUCCESS) |
599 |
|
|
{ |
600 |
|
|
|
601 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
602 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
603 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
604 |
|
|
|
605 |
|
|
/* Release media protection. */ |
606 |
|
1 |
FX_UNPROTECT |
607 |
|
|
|
608 |
|
|
/* Return error code. */ |
609 |
|
1 |
return(media_ptr -> fx_media_driver_status); |
610 |
|
|
} |
611 |
|
|
|
612 |
|
|
/* Decrease the number of sectors to clear. */ |
613 |
|
900 |
sectors--; |
614 |
|
|
} |
615 |
|
|
} |
616 |
|
|
|
617 |
|
|
#ifdef FX_ENABLE_EXFAT |
618 |
|
|
if (media_ptr -> fx_media_FAT_type == FX_exFAT) |
619 |
|
|
{ |
620 |
|
|
|
621 |
|
|
/* Build Write request to the driver. */ |
622 |
|
|
media_ptr -> fx_media_driver_request = FX_DRIVER_WRITE; |
623 |
|
|
media_ptr -> fx_media_driver_status = FX_IO_ERROR; |
624 |
|
|
media_ptr -> fx_media_driver_buffer = media_ptr -> fx_media_memory_buffer; |
625 |
|
|
media_ptr -> fx_media_driver_logical_sector = (ULONG)logical_sector; |
626 |
|
|
media_ptr -> fx_media_driver_sectors = 1; |
627 |
|
|
media_ptr -> fx_media_driver_sector_type = FX_DIRECTORY_SECTOR; |
628 |
|
|
|
629 |
|
|
/* Set the system write flag since we are writing a directory sector. */ |
630 |
|
|
media_ptr -> fx_media_driver_system_write = FX_TRUE; |
631 |
|
|
|
632 |
|
|
/* If trace is enabled, insert this event into the trace buffer. */ |
633 |
|
|
FX_TRACE_IN_LINE_INSERT(FX_TRACE_INTERNAL_IO_DRIVER_WRITE, media_ptr, ((ULONG)logical_sector) + ((ULONG)sectors), 1, media_ptr -> fx_media_memory_buffer, FX_TRACE_INTERNAL_EVENTS, 0, 0) |
634 |
|
|
|
635 |
|
|
/* Invoke the driver to write the sector. */ |
636 |
|
|
(media_ptr -> fx_media_driver_entry) (media_ptr); |
637 |
|
|
|
638 |
|
|
/* Clear the system write flag. */ |
639 |
|
|
media_ptr -> fx_media_driver_system_write = FX_FALSE; |
640 |
|
|
|
641 |
|
|
/* Determine if an error occurred. */ |
642 |
|
|
if (media_ptr -> fx_media_driver_status != FX_SUCCESS) |
643 |
|
|
{ |
644 |
|
|
|
645 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
646 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
647 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
648 |
|
|
|
649 |
|
|
/* Release media protection. */ |
650 |
|
|
FX_UNPROTECT |
651 |
|
|
|
652 |
|
|
/* Return error code. */ |
653 |
|
|
return(media_ptr -> fx_media_driver_status); |
654 |
|
|
} |
655 |
|
|
|
656 |
|
|
/* Mark the cluster as used. */ |
657 |
|
|
status = _fx_utility_exFAT_cluster_state_set(media_ptr, FAT_index, FX_EXFAT_BITMAP_CLUSTER_OCCUPIED); |
658 |
|
|
|
659 |
|
|
/* Check for a bad status. */ |
660 |
|
|
if (status != FX_SUCCESS) |
661 |
|
|
{ |
662 |
|
|
|
663 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
664 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
665 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
666 |
|
|
|
667 |
|
|
/* Release media protection. */ |
668 |
|
|
FX_UNPROTECT |
669 |
|
|
|
670 |
|
|
/* Return the bad status. */ |
671 |
|
|
return(status); |
672 |
|
|
} |
673 |
|
|
|
674 |
|
|
/* Move cluster search pointer forward. */ |
675 |
|
|
media_ptr -> fx_media_cluster_search_start = FAT_index + 1; |
676 |
|
|
|
677 |
|
|
/* Determine if this needs to be wrapped. */ |
678 |
|
|
if (media_ptr -> fx_media_cluster_search_start >= media_ptr -> fx_media_total_clusters + FX_FAT_ENTRY_START) |
679 |
|
|
{ |
680 |
|
|
|
681 |
|
|
/* Wrap the search to the beginning FAT entry. */ |
682 |
|
|
media_ptr -> fx_media_cluster_search_start = FX_FAT_ENTRY_START; |
683 |
|
|
} |
684 |
|
|
|
685 |
|
|
if (search_directory.fx_dir_entry_name[0]) |
686 |
|
|
{ |
687 |
|
|
|
688 |
|
|
/* Not root directory. */ |
689 |
|
|
/* Copy the date and time from the actual sub-directory. */ |
690 |
|
|
search_directory.fx_dir_entry_time = dir_entry.fx_dir_entry_time; |
691 |
|
|
search_directory.fx_dir_entry_date = dir_entry.fx_dir_entry_date; |
692 |
|
|
|
693 |
|
|
/* Check if the directory size has changed. */ |
694 |
|
|
if (search_directory.fx_dir_entry_file_size == dir_size) |
695 |
|
|
{ |
696 |
|
|
|
697 |
|
|
/* Not changed, we need only update time stamps. */ |
698 |
|
|
status = _fx_directory_exFAT_entry_write(media_ptr, &search_directory, UPDATE_FILE); |
699 |
|
|
} |
700 |
|
|
else |
701 |
|
|
{ |
702 |
|
|
|
703 |
|
|
/* Directory size changed, update time stamps and the stream size. */ |
704 |
|
|
status = _fx_directory_exFAT_entry_write(media_ptr, &search_directory, UPDATE_STREAM); |
705 |
|
|
} |
706 |
|
|
|
707 |
|
|
/* Check for a bad status. */ |
708 |
|
|
if (status != FX_SUCCESS) |
709 |
|
|
{ |
710 |
|
|
|
711 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
712 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
713 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
714 |
|
|
|
715 |
|
|
/* Release media protection. */ |
716 |
|
|
FX_UNPROTECT |
717 |
|
|
|
718 |
|
|
/* Return the bad status. */ |
719 |
|
|
return(status); |
720 |
|
|
} |
721 |
|
|
} |
722 |
|
|
} |
723 |
|
|
else |
724 |
|
|
{ |
725 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
726 |
|
|
|
727 |
|
|
/* Now setup the first sector with the initial sub-directory information. */ |
728 |
|
|
|
729 |
|
|
/* Copy the base directory entry to the sub-directory entry. */ |
730 |
|
19759 |
sub_dir_entry = dir_entry; |
731 |
|
|
|
732 |
|
|
/* Setup pointer to media name buffer. */ |
733 |
|
19759 |
sub_dir_entry.fx_dir_entry_name = media_ptr -> fx_media_name_buffer + (FX_MAX_LONG_NAME_LEN * 3); |
734 |
|
|
|
735 |
|
|
/* Set the directory entry name to all blanks. */ |
736 |
|
19759 |
work_ptr = &sub_dir_entry.fx_dir_entry_name[0]; |
737 |
✓✓ |
237108 |
for (i = 0; i < (FX_DIR_NAME_SIZE + FX_DIR_EXT_SIZE); i++) |
738 |
|
|
{ |
739 |
|
217349 |
*work_ptr++ = ' '; |
740 |
|
|
} |
741 |
|
|
|
742 |
|
19759 |
sub_dir_entry.fx_dir_entry_long_name_present = 0; |
743 |
|
|
|
744 |
|
|
/* Now build the "." directory entry. */ |
745 |
|
19759 |
sub_dir_entry.fx_dir_entry_name[0] = '.'; |
746 |
|
19759 |
sub_dir_entry.fx_dir_entry_name[1] = 0; |
747 |
|
19759 |
sub_dir_entry.fx_dir_entry_log_sector = logical_sector; |
748 |
|
19759 |
sub_dir_entry.fx_dir_entry_byte_offset = 0; |
749 |
|
|
|
750 |
|
|
/* Write the directory's first entry. */ |
751 |
|
19759 |
status = _fx_directory_entry_write(media_ptr, &sub_dir_entry); |
752 |
|
|
|
753 |
|
|
/* Check for error condition. */ |
754 |
✓✓ |
19759 |
if (status != FX_SUCCESS) |
755 |
|
|
{ |
756 |
|
|
|
757 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
758 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
759 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
760 |
|
|
|
761 |
|
|
/* Release media protection. */ |
762 |
|
1 |
FX_UNPROTECT |
763 |
|
|
|
764 |
|
|
/* Return error status. */ |
765 |
|
1 |
return(status); |
766 |
|
|
} |
767 |
|
|
|
768 |
|
|
/* Now build the ".." directory entry. */ |
769 |
|
|
|
770 |
|
|
/* Determine if the search directory is the root. */ |
771 |
✓✓ |
19758 |
if (search_directory.fx_dir_entry_name[0]) |
772 |
|
|
{ |
773 |
|
|
|
774 |
|
|
/* Previous directory is not the root directory. */ |
775 |
|
|
|
776 |
|
|
/* Copy into the working directory entry. */ |
777 |
|
454 |
sub_dir_entry = search_directory; |
778 |
|
|
|
779 |
|
|
/* Copy the date and time from the actual sub-directory. */ |
780 |
|
454 |
sub_dir_entry.fx_dir_entry_time = dir_entry.fx_dir_entry_time; |
781 |
|
454 |
sub_dir_entry.fx_dir_entry_date = dir_entry.fx_dir_entry_date; |
782 |
|
|
|
783 |
|
|
/* Adjust pointer to media name buffer. */ |
784 |
|
454 |
sub_dir_entry.fx_dir_entry_name = media_ptr -> fx_media_name_buffer + (FX_MAX_LONG_NAME_LEN * 3); |
785 |
|
|
|
786 |
|
|
/* Change the name to ".." */ |
787 |
|
454 |
work_ptr = &sub_dir_entry.fx_dir_entry_name[0]; |
788 |
✓✓ |
5448 |
for (i = 0; i < (FX_DIR_NAME_SIZE + FX_DIR_EXT_SIZE); i++) |
789 |
|
|
{ |
790 |
|
4994 |
*work_ptr++ = ' '; |
791 |
|
|
} |
792 |
|
|
|
793 |
|
454 |
sub_dir_entry.fx_dir_entry_name[0] = '.'; |
794 |
|
454 |
sub_dir_entry.fx_dir_entry_name[1] = '.'; |
795 |
|
454 |
sub_dir_entry.fx_dir_entry_name[2] = 0; |
796 |
|
|
|
797 |
|
454 |
sub_dir_entry.fx_dir_entry_long_name_present = 0; |
798 |
|
|
|
799 |
|
|
/* Set file size to 0. */ |
800 |
|
454 |
sub_dir_entry.fx_dir_entry_file_size = 0; |
801 |
|
|
|
802 |
|
|
/* Change the logical sector for this entry. */ |
803 |
|
454 |
sub_dir_entry.fx_dir_entry_log_sector = logical_sector; |
804 |
|
|
} |
805 |
|
|
else |
806 |
|
|
{ |
807 |
|
|
|
808 |
|
|
/* Just modify the current directory since the parent |
809 |
|
|
directory is the root. */ |
810 |
|
19304 |
sub_dir_entry.fx_dir_entry_name[1] = '.'; |
811 |
|
19304 |
sub_dir_entry.fx_dir_entry_name[2] = 0; |
812 |
|
|
|
813 |
|
|
/* Clear the cluster to indicate the root directory. */ |
814 |
|
19304 |
sub_dir_entry.fx_dir_entry_cluster = 0; |
815 |
|
|
} |
816 |
|
|
|
817 |
|
|
/* Setup the byte offset. */ |
818 |
|
19758 |
sub_dir_entry.fx_dir_entry_byte_offset = FX_DIR_ENTRY_SIZE; |
819 |
|
|
|
820 |
|
|
/* Write the directory's second entry. */ |
821 |
|
19758 |
status = _fx_directory_entry_write(media_ptr, &sub_dir_entry); |
822 |
|
|
|
823 |
|
|
/* Check for error condition. */ |
824 |
✓✓ |
19758 |
if (status != FX_SUCCESS) |
825 |
|
|
{ |
826 |
|
|
|
827 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
828 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
829 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
830 |
|
|
|
831 |
|
|
/* Release media protection. */ |
832 |
|
1 |
FX_UNPROTECT |
833 |
|
|
|
834 |
|
|
/* Return error status. */ |
835 |
|
1 |
return(status); |
836 |
|
|
} |
837 |
|
|
|
838 |
|
|
/* Write an EOF in the found FAT entry. */ |
839 |
|
19757 |
status = _fx_utility_FAT_entry_write(media_ptr, FAT_index, media_ptr -> fx_media_fat_last); |
840 |
|
|
|
841 |
|
|
/* Check for a bad status. */ |
842 |
✓✓ |
19757 |
if (status != FX_SUCCESS) |
843 |
|
|
{ |
844 |
|
|
|
845 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
846 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
847 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
848 |
|
|
|
849 |
|
|
/* Release media protection. */ |
850 |
|
1 |
FX_UNPROTECT |
851 |
|
|
|
852 |
|
|
/* Return the bad status. */ |
853 |
|
1 |
return(status); |
854 |
|
|
} |
855 |
|
|
|
856 |
|
|
#ifdef FX_ENABLE_EXFAT |
857 |
|
|
} |
858 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
859 |
|
|
|
860 |
|
|
#ifdef FX_FAULT_TOLERANT |
861 |
|
|
|
862 |
|
|
/* Flush the cached individual FAT entries */ |
863 |
|
|
_fx_utility_FAT_flush(media_ptr); |
864 |
|
|
#endif |
865 |
|
|
|
866 |
|
|
/* Now write out the new directory entry. */ |
867 |
|
|
#ifdef FX_ENABLE_EXFAT |
868 |
|
|
if (media_ptr -> fx_media_FAT_type == FX_exFAT) |
869 |
|
|
{ |
870 |
|
|
status = _fx_directory_exFAT_entry_write(media_ptr, &dir_entry, UPDATE_FULL); |
871 |
|
|
} |
872 |
|
|
else |
873 |
|
|
{ |
874 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
875 |
|
|
|
876 |
|
19756 |
status = _fx_directory_entry_write(media_ptr, &dir_entry); |
877 |
|
|
#ifdef FX_ENABLE_EXFAT |
878 |
|
|
} |
879 |
|
|
#endif /* FX_ENABLE_EXFAT */ |
880 |
|
|
|
881 |
|
|
#ifdef FX_ENABLE_FAULT_TOLERANT |
882 |
|
|
/* Check for a bad status. */ |
883 |
|
|
if (status != FX_SUCCESS) |
884 |
|
|
{ |
885 |
|
|
FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr); |
886 |
|
|
|
887 |
|
|
/* Release media protection. */ |
888 |
|
|
FX_UNPROTECT |
889 |
|
|
|
890 |
|
|
/* Return the bad status. */ |
891 |
|
|
return(status); |
892 |
|
|
} |
893 |
|
|
|
894 |
|
|
/* End transaction. */ |
895 |
|
|
status = _fx_fault_tolerant_transaction_end(media_ptr); |
896 |
|
|
#endif /* FX_ENABLE_FAULT_TOLERANT */ |
897 |
|
|
|
898 |
|
|
/* Release media protection. */ |
899 |
|
19756 |
FX_UNPROTECT |
900 |
|
|
|
901 |
|
|
/* Directory create is complete, return status. */ |
902 |
|
19756 |
return(status); |
903 |
|
|
} |
904 |
|
|
|