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Diffstat (limited to 'sdk-modifications/libsrc/fs/partition.h')
| -rwxr-xr-x | sdk-modifications/libsrc/fs/partition.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/sdk-modifications/libsrc/fs/partition.h b/sdk-modifications/libsrc/fs/partition.h new file mode 100755 index 0000000..0777b54 --- /dev/null +++ b/sdk-modifications/libsrc/fs/partition.h @@ -0,0 +1,131 @@ +/* + partition.h + Functions for mounting and dismounting partitions + 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: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-07-11 - Chishm + * Original release +*/ + +#ifndef _PARTITION_H +#define _PARTITION_H + +#include "fs_common.h" + +#include "disc_io/disc.h" +#include "fs_cache.h" + +// Device name +extern const char* DEVICE_NAME; + +// Filesystem type +typedef enum {FS_UNKNOWN, FS_FAT12, FS_FAT16, FS_FAT32} FS_TYPE; + +#ifdef NDS +typedef enum {PI_DEFAULT, PI_SLOT_1, PI_SLOT_2, PI_CUSTOM} PARTITION_INTERFACE; +#else +typedef enum {PI_CART_SLOT} PARTITION_INTERFACE; +#endif + +typedef struct { + u32 fatStart; + u32 sectorsPerFat; + u32 lastCluster; + u32 firstFree; +} FAT; + +typedef struct { + const IO_INTERFACE* disc; + CACHE* cache; + // Info about the partition + bool readOnly; // If this is set, then do not try writing to the disc + FS_TYPE filesysType; + u32 totalSize; + u32 rootDirStart; + u32 rootDirCluster; + u32 numberOfSectors; + u32 dataStart; + u32 bytesPerSector; + u32 sectorsPerCluster; + u32 bytesPerCluster; + FAT fat; + // Values that may change after construction + u32 cwdCluster; // Current working directory cluser + u32 openFileCount; +} PARTITION; + +/* +Mount the device specified by partitionDevice +PD_DEFAULT is not allowed, use _FAT_partition_setDefaultDevice +PD_CUSTOM is not allowed, use _FAT_partition_mountCustomDevice +*/ +bool _FAT_partition_mount (PARTITION_INTERFACE partitionNumber, u32 cacheSize); + +/* +Mount a partition on a custom device +*/ +bool _FAT_partition_mountCustomInterface (const IO_INTERFACE* device, u32 cacheSize); + + +/* +Free Mount a partition on a custom device +*/ +bool _FAT_partition_freeMount( int partitionNumber, const IO_INTERFACE* device, u32 cacheSize);
+ + +/* +Unmount the partition specified by partitionNumber +If there are open files, it will fail +*/ +bool _FAT_partition_unmount (PARTITION_INTERFACE partitionNumber); + +/* +Forcibly unmount the partition specified by partitionNumber +Any open files on the partition will become invalid +The cache will be invalidated, and any unflushed writes will be lost +*/ +bool _FAT_partition_unsafeUnmount (PARTITION_INTERFACE partitionNumber); + +/* +Set the default device for access by fat: and fat0:, +based on the device number +*/ +bool _FAT_partition_setDefaultInterface (PARTITION_INTERFACE partitionNumber); + +/* +Set the default device for access by fat: and fat0:, +based on the partition pointer +*/ +bool _FAT_partition_setDefaultPartition (PARTITION* partition); + +/* +Return the partition specified in a path +For instance, "fat0:", "fat:", "/" and "fat:/" will all +return the default partition +*/ +PARTITION* _FAT_partition_getPartitionFromPath (const char* path); + +#endif // _PARTITION_H |