void _FAT_cache_invalidate (CACHE* cache) { unsigned int i; _FAT_cache_flush(cache); for (i = 0; i < cache->numberOfPages; i++) { cache->cacheEntries[i].sector = CACHE_FREE; cache->cacheEntries[i].last_access = 0; cache->cacheEntries[i].count = 0; cache->cacheEntries[i].dirty = false; } }
void _FAT_cache_destructor (CACHE* cache) { unsigned int i; // Clear out cache before destroying it _FAT_cache_flush(cache); // Free memory in reverse allocation order for (i = 0; i < cache->numberOfPages; i++) { _FAT_mem_free (cache->cacheEntries[i].cache); } _FAT_mem_free (cache->cacheEntries); _FAT_mem_free (cache); }
void flushFatCache() { // This involves things from libfat which aren't normally visible devoptab_t* devops = (devoptab_t*)GetDeviceOpTab ("sd"); PARTITION* partition = (PARTITION*)devops->deviceData; _FAT_cache_flush(partition->cache); // Flush the cache manually }
int fat_fflush(FILE_STRUCT *fp) { return(_FAT_cache_flush(fp->partition->cache)); }
int renamex( const char *oldName, const char *newName ) { PARTITION* partition = NULL; DIR_ENTRY oldDirEntry; DIR_ENTRY newDirEntry; const char *pathEnd; u32 dirCluster; // Get the partition this directory is on partition = _FAT_partition_getPartitionFromPath (oldName); if (partition == NULL) { errno = ENODEV; return -1; } // Make sure the same partition is used for the old and new names if (partition != _FAT_partition_getPartitionFromPath (newName)) { errno = EXDEV; return -1; } // Make sure we aren't trying to write to a read-only disc if (partition->readOnly) { errno = EROFS; return -1; } // Move the path pointer to the start of the actual path if (strchr (oldName, ':') != NULL) { oldName = strchr (oldName, ':') + 1; } if (strchr (oldName, ':') != NULL) { errno = EINVAL; return -1; } if (strchr (newName, ':') != NULL) { newName = strchr (newName, ':') + 1; } if (strchr (newName, ':') != NULL) { errno = EINVAL; return -1; } // Search for the file on the disc if (!_FAT_directory_entryFromPath (partition, &oldDirEntry, oldName, NULL)) { errno = ENOENT; return -1; } // Make sure there is no existing file / directory with the new name if (_FAT_directory_entryFromPath (partition, &newDirEntry, newName, NULL)) { errno = EEXIST; return -1; } // Create the new file entry // Get the directory it has to go in pathEnd = strrchr (newName, DIR_SEPARATOR); if (pathEnd == NULL) { // No path was specified dirCluster = partition->cwdCluster; pathEnd = newName; } else { // Path was specified -- get the right dirCluster // Recycling newDirEntry, since it needs to be recreated anyway if (!_FAT_directory_entryFromPath (partition, &newDirEntry, newName, pathEnd) || !_FAT_directory_isDirectory(&newDirEntry)) { errno = ENOTDIR; return -1; } dirCluster = _FAT_directory_entryGetCluster (newDirEntry.entryData); // Move the pathEnd past the last DIR_SEPARATOR pathEnd += 1; } // Copy the entry data memcpy (&newDirEntry, &oldDirEntry, sizeof(DIR_ENTRY)); // Set the new name strncpy (newDirEntry.d_name, pathEnd, MAX_FILENAME_LENGTH - 1); // Write the new entry if (!_FAT_directory_addEntry (partition, &newDirEntry, dirCluster)) { errno = ENOSPC; return -1; } // Remove the old entry if (!_FAT_directory_removeEntry (partition, &oldDirEntry)) { errno = EIO; return -1; } // Flush any sectors in the disc cache if (!_FAT_cache_flush (partition->cache)) { errno = EIO; return -1; } return 0; }