mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-12-18 16:01:58 +01:00
*Fixed display of partition size on WBFS partitions with a different wbfs sector size than 512bytes.
*Made the ProgressWindow for game installation more accurate *Added displaying newly installed games (marked as new) on favorite list, so you don't have to change to full list when installing new games. (Thanks Cyan for the patch) *Lot's a small fixes *Added WDM Menu on game start. You can set it in the alternative DOL option (one new option there). The menu lists all DOLs on the disc and if a wdm file is provided in the WDM path (configurable in the settings) than the dol parameter and dol replacement name will be taken from the wdm. The DOLs that are not listed in the WDM but exist on the DISC will be listed at the end of the list. *Added avoid of multiple app cleanup when game fails to boot *Changed libfat to use FS info sector on FAT32 partitions. This speeds up the free space information getting to instant. For that the FS info sector has to have correct values. The values of all partitions where homebrews were writing to are currently incorrect because the official libfat does not support FS info sector (i submited a patch) (Windows does write it correct though). That is why there needs to be a synchronization of the FS info sector for partitions used with homebrews. For this purpose a new setting was added in the Loader Settings. You can synchronize all your FAT32 partitions on the USB with it once and you are done (if you don't write to that partition with current homebrews). After that you can enable free space display and it will be instant like on WBFS/NTFS/EXT partitions.
This commit is contained in:
dimok321
parent
85eb0a7ed2
commit
9d46977121
@ -264,34 +264,6 @@ bool _FAT_cache_eraseWritePartialSector (CACHE* cache, const void* buffer, sec_t
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return true;
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}
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#ifndef GEKKO
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static CACHE_ENTRY* _FAT_cache_findPage(CACHE *cache, sec_t sector, sec_t count) {
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unsigned int i;
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CACHE_ENTRY* cacheEntries = cache->cacheEntries;
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unsigned int numberOfPages = cache->numberOfPages;
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CACHE_ENTRY *entry = NULL;
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sec_t lowest = UINT_MAX;
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for(i=0;i<numberOfPages;i++) {
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if (cacheEntries[i].sector != CACHE_FREE) {
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bool intersect;
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if (sector > cacheEntries[i].sector) {
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intersect = sector - cacheEntries[i].sector < cacheEntries[i].count;
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} else {
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intersect = cacheEntries[i].sector - sector < count;
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}
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if ( intersect && (cacheEntries[i].sector < lowest)) {
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lowest = cacheEntries[i].sector;
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entry = &cacheEntries[i];
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}
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}
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}
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return entry;
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}
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#endif
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bool _FAT_cache_writeSectors (CACHE* cache, sec_t sector, sec_t numSectors, const void* buffer)
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{
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@ -302,24 +274,9 @@ bool _FAT_cache_writeSectors (CACHE* cache, sec_t sector, sec_t numSectors, cons
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while(numSectors>0)
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{
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#ifdef GEKKO
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entry = _FAT_cache_getPage(cache,sector);
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if(entry==NULL) return false;
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#else
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entry = _FAT_cache_findPage(cache,sector,numSectors);
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if(entry==NULL)
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return _FAT_disc_writeSectors(cache->disc,sector,numSectors,src);
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if ( entry->sector > sector) {
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secs_to_write = entry->sector - sector;
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_FAT_disc_writeSectors(cache->disc,sector,secs_to_write,src);
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src += (secs_to_write*BYTES_PER_READ);
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sector += secs_to_write;
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numSectors -= secs_to_write;
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}
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#endif
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sec = sector - entry->sector;
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secs_to_write = entry->count - sec;
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if(secs_to_write>numSectors) secs_to_write = numSectors;
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@ -1,11 +1,11 @@
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/*
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fatdir.c
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Functions used by the newlib disc stubs to interface with
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Functions used by the newlib disc stubs to interface with
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this library
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Copyright (c) 2006 Michael "Chishm" Chisholm
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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@ -32,7 +32,7 @@
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#include <errno.h>
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#include <ctype.h>
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#include <unistd.h>
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#include <sys/dir.h>
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#include <sys/iosupport.h>
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#include "fatdir.h"
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@ -48,7 +48,7 @@
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int _FAT_stat_r (struct _reent *r, const char *path, struct stat *st) {
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PARTITION* partition = NULL;
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DIR_ENTRY dirEntry;
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// Get the partition this file is on
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partition = _FAT_partition_getPartitionFromPath (path);
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if (partition == NULL) {
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@ -73,10 +73,10 @@ int _FAT_stat_r (struct _reent *r, const char *path, struct stat *st) {
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r->_errno = ENOENT;
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return -1;
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}
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// Fill in the stat struct
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_FAT_directory_entryStat (partition, &dirEntry, st);
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_FAT_unlock(&partition->lock);
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return 0;
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}
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@ -93,7 +93,7 @@ int _FAT_unlink_r (struct _reent *r, const char *path) {
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uint32_t cluster;
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bool nextEntry;
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bool errorOccured = false;
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// Get the partition this directory is on
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partition = _FAT_partition_getPartitionFromPath (path);
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if (partition == NULL) {
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@ -105,7 +105,7 @@ int _FAT_unlink_r (struct _reent *r, const char *path) {
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if (partition->readOnly) {
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r->_errno = EROFS;
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return -1;
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}
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}
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// Move the path pointer to the start of the actual path
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if (strchr (path, ':') != NULL) {
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@ -115,23 +115,23 @@ int _FAT_unlink_r (struct _reent *r, const char *path) {
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r->_errno = EINVAL;
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return -1;
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}
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_FAT_lock(&partition->lock);
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// Search for the file on the disc
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if (!_FAT_directory_entryFromPath (partition, &dirEntry, path, NULL)) {
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_FAT_unlock(&partition->lock);
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r->_errno = ENOENT;
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return -1;
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}
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cluster = _FAT_directory_entryGetCluster (partition, dirEntry.entryData);
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// If this is a directory, make sure it is empty
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if (_FAT_directory_isDirectory (&dirEntry)) {
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nextEntry = _FAT_directory_getFirstEntry (partition, &dirContents, cluster);
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while (nextEntry) {
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if (!_FAT_directory_isDot (&dirContents)) {
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// The directory had something in it that isn't a reference to itself or it's parent
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@ -156,13 +156,13 @@ int _FAT_unlink_r (struct _reent *r, const char *path) {
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r->_errno = EIO;
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errorOccured = true;
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}
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// Flush any sectors in the disc cache
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if (!_FAT_cache_flush(partition->cache)) {
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r->_errno = EIO;
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errorOccured = true;
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}
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_FAT_unlock(&partition->lock);
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if (errorOccured) {
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return -1;
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@ -173,7 +173,7 @@ int _FAT_unlink_r (struct _reent *r, const char *path) {
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int _FAT_chdir_r (struct _reent *r, const char *path) {
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PARTITION* partition = NULL;
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// Get the partition this directory is on
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partition = _FAT_partition_getPartitionFromPath (path);
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if (partition == NULL) {
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@ -189,7 +189,7 @@ int _FAT_chdir_r (struct _reent *r, const char *path) {
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r->_errno = EINVAL;
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return -1;
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}
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_FAT_lock(&partition->lock);
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// Try changing directory
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@ -211,16 +211,16 @@ int _FAT_rename_r (struct _reent *r, const char *oldName, const char *newName) {
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DIR_ENTRY newDirEntry;
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const char *pathEnd;
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uint32_t dirCluster;
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// Get the partition this directory is on
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partition = _FAT_partition_getPartitionFromPath (oldName);
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if (partition == NULL) {
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r->_errno = ENODEV;
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return -1;
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}
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_FAT_lock(&partition->lock);
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// Make sure the same partition is used for the old and new names
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if (partition != _FAT_partition_getPartitionFromPath (newName)) {
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_FAT_unlock(&partition->lock);
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@ -233,7 +233,7 @@ int _FAT_rename_r (struct _reent *r, const char *oldName, const char *newName) {
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_FAT_unlock(&partition->lock);
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r->_errno = EROFS;
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return -1;
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}
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}
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// Move the path pointer to the start of the actual path
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if (strchr (oldName, ':') != NULL) {
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@ -259,7 +259,7 @@ int _FAT_rename_r (struct _reent *r, const char *oldName, const char *newName) {
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r->_errno = ENOENT;
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return -1;
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}
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// Make sure there is no existing file / directory with the new name
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if (_FAT_directory_entryFromPath (partition, &newDirEntry, newName, NULL)) {
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_FAT_unlock(&partition->lock);
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@ -268,7 +268,7 @@ int _FAT_rename_r (struct _reent *r, const char *oldName, const char *newName) {
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}
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// Create the new file entry
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// Get the directory it has to go in
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// Get the directory it has to go in
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pathEnd = strrchr (newName, DIR_SEPARATOR);
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if (pathEnd == NULL) {
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// No path was specified
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@ -290,24 +290,24 @@ int _FAT_rename_r (struct _reent *r, const char *oldName, const char *newName) {
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// Copy the entry data
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memcpy (&newDirEntry, &oldDirEntry, sizeof(DIR_ENTRY));
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// Set the new name
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strncpy (newDirEntry.filename, pathEnd, MAX_FILENAME_LENGTH - 1);
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// Write the new entry
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if (!_FAT_directory_addEntry (partition, &newDirEntry, dirCluster)) {
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_FAT_unlock(&partition->lock);
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r->_errno = ENOSPC;
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return -1;
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}
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// Remove the old entry
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if (!_FAT_directory_removeEntry (partition, &oldDirEntry)) {
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_FAT_unlock(&partition->lock);
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r->_errno = EIO;
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return -1;
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}
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// Flush any sectors in the disc cache
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if (!_FAT_cache_flush (partition->cache)) {
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_FAT_unlock(&partition->lock);
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@ -341,27 +341,27 @@ int _FAT_mkdir_r (struct _reent *r, const char *path, int mode) {
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r->_errno = EINVAL;
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return -1;
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}
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_FAT_lock(&partition->lock);
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// Search for the file/directory on the disc
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fileExists = _FAT_directory_entryFromPath (partition, &dirEntry, path, NULL);
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// Make sure it doesn't exist
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if (fileExists) {
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_FAT_unlock(&partition->lock);
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r->_errno = EEXIST;
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return -1;
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}
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if (partition->readOnly) {
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// We can't write to a read-only partition
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_FAT_unlock(&partition->lock);
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r->_errno = EROFS;
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return -1;
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}
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// Get the directory it has to go in
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}
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// Get the directory it has to go in
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pathEnd = strrchr (path, DIR_SEPARATOR);
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if (pathEnd == NULL) {
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// No path was specified
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@ -383,7 +383,7 @@ int _FAT_mkdir_r (struct _reent *r, const char *path, int mode) {
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// Create the entry data
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strncpy (dirEntry.filename, pathEnd, MAX_FILENAME_LENGTH - 1);
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memset (dirEntry.entryData, 0, DIR_ENTRY_DATA_SIZE);
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// Set the creation time and date
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dirEntry.entryData[DIR_ENTRY_cTime_ms] = 0;
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u16_to_u8array (dirEntry.entryData, DIR_ENTRY_cTime, _FAT_filetime_getTimeFromRTC());
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@ -391,10 +391,10 @@ int _FAT_mkdir_r (struct _reent *r, const char *path, int mode) {
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u16_to_u8array (dirEntry.entryData, DIR_ENTRY_mTime, _FAT_filetime_getTimeFromRTC());
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u16_to_u8array (dirEntry.entryData, DIR_ENTRY_mDate, _FAT_filetime_getDateFromRTC());
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u16_to_u8array (dirEntry.entryData, DIR_ENTRY_aDate, _FAT_filetime_getDateFromRTC());
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// Set the directory attribute
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dirEntry.entryData[DIR_ENTRY_attributes] = ATTRIB_DIR;
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// Get a cluster for the new directory
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dirCluster = _FAT_fat_linkFreeClusterCleared (partition, CLUSTER_FREE);
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if (!_FAT_fat_isValidCluster(partition, dirCluster)) {
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@ -412,7 +412,7 @@ int _FAT_mkdir_r (struct _reent *r, const char *path, int mode) {
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r->_errno = ENOSPC;
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return -1;
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}
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// Create the dot entry within the directory
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memset (newEntryData, 0, DIR_ENTRY_DATA_SIZE);
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memset (newEntryData, ' ', 11);
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@ -420,12 +420,12 @@ int _FAT_mkdir_r (struct _reent *r, const char *path, int mode) {
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newEntryData[DIR_ENTRY_attributes] = ATTRIB_DIR;
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u16_to_u8array (newEntryData, DIR_ENTRY_cluster, dirCluster);
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u16_to_u8array (newEntryData, DIR_ENTRY_clusterHigh, dirCluster >> 16);
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// Write it to the directory, erasing that sector in the process
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_FAT_cache_eraseWritePartialSector ( partition->cache, newEntryData,
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_FAT_cache_eraseWritePartialSector ( partition->cache, newEntryData,
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_FAT_fat_clusterToSector (partition, dirCluster), 0, DIR_ENTRY_DATA_SIZE);
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// Create the double dot entry within the directory
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// if ParentDir == Rootdir then ".."" always link to Cluster 0
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@ -437,7 +437,7 @@ int _FAT_mkdir_r (struct _reent *r, const char *path, int mode) {
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u16_to_u8array (newEntryData, DIR_ENTRY_clusterHigh, parentCluster >> 16);
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// Write it to the directory
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_FAT_cache_writePartialSector ( partition->cache, newEntryData,
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_FAT_cache_writePartialSector ( partition->cache, newEntryData,
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_FAT_fat_clusterToSector (partition, dirCluster), DIR_ENTRY_DATA_SIZE, DIR_ENTRY_DATA_SIZE);
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// Flush any sectors in the disc cache
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@ -451,7 +451,7 @@ int _FAT_mkdir_r (struct _reent *r, const char *path, int mode) {
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return 0;
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}
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int _FAT_statvfs_r (struct _reent *r, const char *path, struct statvfs *buf)
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int _FAT_statvfs_r (struct _reent *r, const char *path, struct statvfs *buf)
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{
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PARTITION* partition = NULL;
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unsigned int freeClusterCount;
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@ -465,29 +465,38 @@ int _FAT_statvfs_r (struct _reent *r, const char *path, struct statvfs *buf)
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_FAT_lock(&partition->lock);
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freeClusterCount = _FAT_fat_freeClusterCount (partition);
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if(memcmp(&buf->f_flag, "SCAN", 4) == 0)
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{
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//Special command was given to sync the numberFreeCluster
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_FAT_partition_createFSinfo(partition);
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}
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if(partition->filesysType == FS_FAT32)
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freeClusterCount = partition->fat.numberFreeCluster;
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else
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freeClusterCount = _FAT_fat_freeClusterCount (partition);
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// FAT clusters = POSIX blocks
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buf->f_bsize = partition->bytesPerCluster; // File system block size.
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buf->f_frsize = partition->bytesPerCluster; // Fundamental file system block size.
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buf->f_blocks = partition->fat.lastCluster - CLUSTER_FIRST + 1; // Total number of blocks on file system in units of f_frsize.
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buf->f_bfree = freeClusterCount; // Total number of free blocks.
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buf->f_bavail = freeClusterCount; // Number of free blocks available to non-privileged process.
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buf->f_bsize = partition->bytesPerCluster; // File system block size.
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buf->f_frsize = partition->bytesPerCluster; // Fundamental file system block size.
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buf->f_blocks = partition->fat.lastCluster - CLUSTER_FIRST + 1; // Total number of blocks on file system in units of f_frsize.
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buf->f_bfree = freeClusterCount; // Total number of free blocks.
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buf->f_bavail = freeClusterCount; // Number of free blocks available to non-privileged process.
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// Treat requests for info on inodes as clusters
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buf->f_files = partition->fat.lastCluster - CLUSTER_FIRST + 1; // Total number of file serial numbers.
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buf->f_ffree = freeClusterCount; // Total number of free file serial numbers.
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buf->f_favail = freeClusterCount; // Number of file serial numbers available to non-privileged process.
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buf->f_files = partition->fat.lastCluster - CLUSTER_FIRST + 1; // Total number of file serial numbers.
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buf->f_ffree = freeClusterCount; // Total number of free file serial numbers.
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buf->f_favail = freeClusterCount; // Number of file serial numbers available to non-privileged process.
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// File system ID. 32bit ioType value
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buf->f_fsid = _FAT_disc_hostType(partition->disc);
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buf->f_fsid = _FAT_disc_hostType(partition->disc);
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// Bit mask of f_flag values.
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buf->f_flag = ST_NOSUID /* No support for ST_ISUID and ST_ISGID file mode bits */
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| (partition->readOnly ? ST_RDONLY /* Read only file system */ : 0 ) ;
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// Maximum filename length.
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buf->f_namemax = MAX_FILENAME_LENGTH;
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buf->f_namemax = MAX_FILENAME_LENGTH;
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_FAT_unlock(&partition->lock);
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return 0;
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@ -497,7 +506,7 @@ DIR_ITER* _FAT_diropen_r(struct _reent *r, DIR_ITER *dirState, const char *path)
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DIR_ENTRY dirEntry;
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DIR_STATE_STRUCT* state = (DIR_STATE_STRUCT*) (dirState->dirStruct);
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bool fileExists;
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state->partition = _FAT_partition_getPartitionFromPath (path);
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if (state->partition == NULL) {
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r->_errno = ENODEV;
|
||||
@ -512,18 +521,18 @@ DIR_ITER* _FAT_diropen_r(struct _reent *r, DIR_ITER *dirState, const char *path)
|
||||
r->_errno = EINVAL;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
_FAT_lock(&state->partition->lock);
|
||||
|
||||
|
||||
// Get the start cluster of the directory
|
||||
fileExists = _FAT_directory_entryFromPath (state->partition, &dirEntry, path, NULL);
|
||||
|
||||
|
||||
if (!fileExists) {
|
||||
_FAT_unlock(&state->partition->lock);
|
||||
r->_errno = ENOENT;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
// Make sure it is a directory
|
||||
if (! _FAT_directory_isDirectory (&dirEntry)) {
|
||||
_FAT_unlock(&state->partition->lock);
|
||||
@ -533,11 +542,11 @@ DIR_ITER* _FAT_diropen_r(struct _reent *r, DIR_ITER *dirState, const char *path)
|
||||
|
||||
// Save the start cluster for use when resetting the directory data
|
||||
state->startCluster = _FAT_directory_entryGetCluster (state->partition, dirEntry.entryData);
|
||||
|
||||
|
||||
// Get the first entry for use with a call to dirnext
|
||||
state->validEntry =
|
||||
state->validEntry =
|
||||
_FAT_directory_getFirstEntry (state->partition, &(state->currentEntry), state->startCluster);
|
||||
|
||||
|
||||
// We are now using this entry
|
||||
state->inUse = true;
|
||||
_FAT_unlock(&state->partition->lock);
|
||||
@ -548,7 +557,7 @@ int _FAT_dirreset_r (struct _reent *r, DIR_ITER *dirState) {
|
||||
DIR_STATE_STRUCT* state = (DIR_STATE_STRUCT*) (dirState->dirStruct);
|
||||
|
||||
_FAT_lock(&state->partition->lock);
|
||||
|
||||
|
||||
// Make sure we are still using this entry
|
||||
if (!state->inUse) {
|
||||
_FAT_unlock(&state->partition->lock);
|
||||
@ -557,7 +566,7 @@ int _FAT_dirreset_r (struct _reent *r, DIR_ITER *dirState) {
|
||||
}
|
||||
|
||||
// Get the first entry for use with a call to dirnext
|
||||
state->validEntry =
|
||||
state->validEntry =
|
||||
_FAT_directory_getFirstEntry (state->partition, &(state->currentEntry), state->startCluster);
|
||||
|
||||
_FAT_unlock(&state->partition->lock);
|
||||
@ -568,14 +577,14 @@ int _FAT_dirnext_r (struct _reent *r, DIR_ITER *dirState, char *filename, struct
|
||||
DIR_STATE_STRUCT* state = (DIR_STATE_STRUCT*) (dirState->dirStruct);
|
||||
|
||||
_FAT_lock(&state->partition->lock);
|
||||
|
||||
|
||||
// Make sure we are still using this entry
|
||||
if (!state->inUse) {
|
||||
_FAT_unlock(&state->partition->lock);
|
||||
r->_errno = EBADF;
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
// Make sure there is another file to report on
|
||||
if (! state->validEntry) {
|
||||
_FAT_unlock(&state->partition->lock);
|
||||
@ -589,9 +598,9 @@ int _FAT_dirnext_r (struct _reent *r, DIR_ITER *dirState, char *filename, struct
|
||||
if (filestat != NULL) {
|
||||
_FAT_directory_entryStat (state->partition, &(state->currentEntry), filestat);
|
||||
}
|
||||
|
||||
|
||||
// Look for the next entry for use next time
|
||||
state->validEntry =
|
||||
state->validEntry =
|
||||
_FAT_directory_getNextEntry (state->partition, &(state->currentEntry));
|
||||
|
||||
_FAT_unlock(&state->partition->lock);
|
||||
@ -600,7 +609,7 @@ int _FAT_dirnext_r (struct _reent *r, DIR_ITER *dirState, char *filename, struct
|
||||
|
||||
int _FAT_dirclose_r (struct _reent *r, DIR_ITER *dirState) {
|
||||
DIR_STATE_STRUCT* state = (DIR_STATE_STRUCT*) (dirState->dirStruct);
|
||||
|
||||
|
||||
// We are no longer using this entry
|
||||
_FAT_lock(&state->partition->lock);
|
||||
state->inUse = false;
|
||||
|
||||
@ -245,6 +245,8 @@ uint32_t _FAT_fat_linkFreeCluster(PARTITION* partition, uint32_t cluster) {
|
||||
}
|
||||
}
|
||||
partition->fat.firstFree = firstFree;
|
||||
partition->fat.numberFreeCluster--;
|
||||
partition->fat.numberLastAllocCluster = firstFree;
|
||||
|
||||
if ((cluster >= CLUSTER_FIRST) && (cluster <= lastCluster))
|
||||
{
|
||||
@ -309,6 +311,7 @@ bool _FAT_fat_clearLinks (PARTITION* partition, uint32_t cluster) {
|
||||
// Erase the link
|
||||
_FAT_fat_writeFatEntry (partition, cluster, CLUSTER_FREE);
|
||||
|
||||
partition->fat.numberFreeCluster++;
|
||||
// Move onto next cluster
|
||||
cluster = nextCluster;
|
||||
}
|
||||
|
||||
@ -95,7 +95,20 @@ enum BPB {
|
||||
BPB_bootSig_AA = 0x1FF
|
||||
};
|
||||
|
||||
// File system information block offsets
|
||||
enum FSIB
|
||||
{
|
||||
FSIB_SIG1 = 0x00,
|
||||
FSIB_SIG2 = 0x1e4,
|
||||
FSIB_numberOfFreeCluster = 0x1e8,
|
||||
FSIB_numberLastAllocCluster = 0x1ec,
|
||||
FSIB_bootSig_55 = 0x1FE,
|
||||
FSIB_bootSig_AA = 0x1FF
|
||||
};
|
||||
|
||||
static const char FAT_SIG[3] = {'F', 'A', 'T'};
|
||||
static const char FS_INFO_SIG1[4] = {'R', 'R', 'a', 'A'};
|
||||
static const char FS_INFO_SIG2[4] = {'r', 'r', 'A', 'a'};
|
||||
|
||||
|
||||
sec_t FindFirstValidPartition(const DISC_INTERFACE* disc)
|
||||
@ -234,10 +247,15 @@ PARTITION* _FAT_partition_constructor (const DISC_INTERFACE* disc, uint32_t cach
|
||||
|
||||
partition->totalSize = ((uint64_t)partition->numberOfSectors - (partition->dataStart - startSector)) * (uint64_t)partition->bytesPerSector;
|
||||
|
||||
//FS info sector
|
||||
partition->fsInfoSector = startSector + (u8array_to_u16(sectorBuffer, BPB_FAT32_fsInfo) ? u8array_to_u16(sectorBuffer, BPB_FAT32_fsInfo) : 1);
|
||||
|
||||
// Store info about FAT
|
||||
uint32_t clusterCount = (partition->numberOfSectors - (uint32_t)(partition->dataStart - startSector)) / partition->sectorsPerCluster;
|
||||
partition->fat.lastCluster = clusterCount + CLUSTER_FIRST - 1;
|
||||
partition->fat.firstFree = CLUSTER_FIRST;
|
||||
partition->fat.numberFreeCluster = 0;
|
||||
partition->fat.numberLastAllocCluster = 0;
|
||||
|
||||
if (clusterCount < CLUSTERS_PER_FAT12) {
|
||||
partition->filesysType = FS_FAT12; // FAT12 volume
|
||||
@ -272,6 +290,8 @@ PARTITION* _FAT_partition_constructor (const DISC_INTERFACE* disc, uint32_t cach
|
||||
partition->openFileCount = 0;
|
||||
partition->firstOpenFile = NULL;
|
||||
|
||||
_FAT_partition_readFSinfo(partition);
|
||||
|
||||
return partition;
|
||||
}
|
||||
|
||||
@ -287,6 +307,9 @@ void _FAT_partition_destructor (PARTITION* partition) {
|
||||
nextFile = nextFile->nextOpenFile;
|
||||
}
|
||||
|
||||
// Write out the fs info sector
|
||||
_FAT_partition_writeFSinfo(partition);
|
||||
|
||||
// Free memory used by the cache, writing it to disc at the same time
|
||||
_FAT_cache_destructor (partition->cache);
|
||||
|
||||
@ -309,3 +332,77 @@ PARTITION* _FAT_partition_getPartitionFromPath (const char* path) {
|
||||
|
||||
return (PARTITION*)devops->deviceData;
|
||||
}
|
||||
|
||||
void _FAT_partition_createFSinfo(PARTITION * partition)
|
||||
{
|
||||
if(partition->readOnly || partition->filesysType != FS_FAT32)
|
||||
return;
|
||||
|
||||
uint8_t sectorBuffer[BYTES_PER_READ];
|
||||
memset(sectorBuffer, 0, sizeof(sectorBuffer));
|
||||
|
||||
int i;
|
||||
for(i = 0; i < 4; ++i)
|
||||
{
|
||||
sectorBuffer[FSIB_SIG1+i] = FS_INFO_SIG1[i];
|
||||
sectorBuffer[FSIB_SIG2+i] = FS_INFO_SIG2[i];
|
||||
}
|
||||
|
||||
partition->fat.numberFreeCluster = _FAT_fat_freeClusterCount(partition);
|
||||
u32_to_u8array(sectorBuffer, FSIB_numberOfFreeCluster, partition->fat.numberFreeCluster);
|
||||
u32_to_u8array(sectorBuffer, FSIB_numberLastAllocCluster, partition->fat.numberLastAllocCluster);
|
||||
|
||||
sectorBuffer[FSIB_bootSig_55] = 0x55;
|
||||
sectorBuffer[FSIB_bootSig_AA] = 0xAA;
|
||||
|
||||
_FAT_disc_writeSectors (partition->disc, partition->fsInfoSector, 1, sectorBuffer);
|
||||
}
|
||||
|
||||
void _FAT_partition_readFSinfo(PARTITION * partition)
|
||||
{
|
||||
if(partition->filesysType != FS_FAT32)
|
||||
return;
|
||||
|
||||
uint8_t sectorBuffer[BYTES_PER_READ] = {0};
|
||||
|
||||
// Read first sector of disc
|
||||
if (!_FAT_disc_readSectors (partition->disc, partition->fsInfoSector, 1, sectorBuffer)) {
|
||||
return;
|
||||
}
|
||||
|
||||
if(memcmp(sectorBuffer+FSIB_SIG1, FS_INFO_SIG1, 4) != 0 ||
|
||||
memcmp(sectorBuffer+FSIB_SIG2, FS_INFO_SIG2, 4) != 0 ||
|
||||
u8array_to_u32(sectorBuffer, FSIB_numberOfFreeCluster) == 0)
|
||||
{
|
||||
//sector does not yet exist, create one!
|
||||
_FAT_partition_createFSinfo(partition);
|
||||
return;
|
||||
}
|
||||
|
||||
partition->fat.numberFreeCluster = u8array_to_u32(sectorBuffer, FSIB_numberOfFreeCluster);
|
||||
partition->fat.numberLastAllocCluster = u8array_to_u32(sectorBuffer, FSIB_numberLastAllocCluster);
|
||||
}
|
||||
|
||||
void _FAT_partition_writeFSinfo(PARTITION * partition)
|
||||
{
|
||||
if(partition->filesysType != FS_FAT32)
|
||||
return;
|
||||
|
||||
uint8_t sectorBuffer[BYTES_PER_READ] = {0};
|
||||
|
||||
// Read first sector of disc
|
||||
if (!_FAT_disc_readSectors (partition->disc, partition->fsInfoSector, 1, sectorBuffer)) {
|
||||
return;
|
||||
}
|
||||
|
||||
if(memcmp(sectorBuffer+FSIB_SIG1, FS_INFO_SIG1, 4) || memcmp(sectorBuffer+FSIB_SIG2, FS_INFO_SIG2, 4))
|
||||
return;
|
||||
|
||||
u32_to_u8array(sectorBuffer, FSIB_numberOfFreeCluster, partition->fat.numberFreeCluster);
|
||||
u32_to_u8array(sectorBuffer, FSIB_numberLastAllocCluster, partition->fat.numberLastAllocCluster);
|
||||
|
||||
// Read first sector of disc
|
||||
if (!_FAT_disc_writeSectors (partition->disc, partition->fsInfoSector, 1, sectorBuffer)) {
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
@ -4,7 +4,7 @@
|
||||
on various block devices.
|
||||
|
||||
Copyright (c) 2006 Michael "Chishm" Chisholm
|
||||
|
||||
|
||||
Redistribution and use in source and binary forms, with or without modification,
|
||||
are permitted provided that the following conditions are met:
|
||||
|
||||
@ -45,6 +45,8 @@ typedef struct {
|
||||
uint32_t sectorsPerFat;
|
||||
uint32_t lastCluster;
|
||||
uint32_t firstFree;
|
||||
uint32_t numberFreeCluster;
|
||||
uint32_t numberLastAllocCluster;
|
||||
} FAT;
|
||||
|
||||
typedef struct {
|
||||
@ -60,6 +62,7 @@ typedef struct {
|
||||
uint32_t bytesPerSector;
|
||||
uint32_t sectorsPerCluster;
|
||||
uint32_t bytesPerCluster;
|
||||
uint32_t fsInfoSector;
|
||||
FAT fat;
|
||||
// Values that may change after construction
|
||||
uint32_t cwdCluster; // Current working directory cluster
|
||||
@ -76,7 +79,7 @@ Mount the supplied device and return a pointer to the struct necessary to use it
|
||||
PARTITION* _FAT_partition_constructor (const DISC_INTERFACE* disc, uint32_t cacheSize, uint32_t SectorsPerPage, sec_t startSector);
|
||||
|
||||
/*
|
||||
Dismount the device and free all structures used.
|
||||
Dismount the device and free all structures used.
|
||||
Will also attempt to synchronise all open files to disc.
|
||||
*/
|
||||
void _FAT_partition_destructor (PARTITION* partition);
|
||||
@ -86,4 +89,19 @@ Return the partition specified in a path, as taken from the devoptab.
|
||||
*/
|
||||
PARTITION* _FAT_partition_getPartitionFromPath (const char* path);
|
||||
|
||||
/*
|
||||
Create the fs info sector.
|
||||
*/
|
||||
void _FAT_partition_createFSinfo(PARTITION * partition);
|
||||
|
||||
/*
|
||||
Read the fs info sector data.
|
||||
*/
|
||||
void _FAT_partition_readFSinfo(PARTITION * partition);
|
||||
|
||||
/*
|
||||
Write the fs info sector data.
|
||||
*/
|
||||
void _FAT_partition_writeFSinfo(PARTITION * partition);
|
||||
|
||||
#endif // _PARTITION_H
|
||||
|
||||
Loading…
Reference in New Issue
Block a user