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author | Nebuleon Fumika | 2013-02-08 05:50:22 -0500 |
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committer | Nebuleon Fumika | 2013-02-08 05:50:22 -0500 |
commit | 927d456306672110870eb3386742c1c1ef8eb4f6 (patch) | |
tree | 509da9ac1727570b02572068aefb9cdf102ad75b /sdk-modifications/libsrc/fs/file_allocation_table.h | |
parent | 433749b6ef1e2b070755c3bb7fc0d81b5ecaa7b1 (diff) | |
parent | d4fcf2697c9a45594e3ee0b8bf82e480ddd0b69b (diff) | |
download | snes9x2005-927d456306672110870eb3386742c1c1ef8eb4f6.tar.gz snes9x2005-927d456306672110870eb3386742c1c1ef8eb4f6.tar.bz2 snes9x2005-927d456306672110870eb3386742c1c1ef8eb4f6.zip |
Merge branch 'master' into 8bitsound
Conflicts:
source/nds/entry.cpp
Diffstat (limited to 'sdk-modifications/libsrc/fs/file_allocation_table.h')
-rwxr-xr-x | sdk-modifications/libsrc/fs/file_allocation_table.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/sdk-modifications/libsrc/fs/file_allocation_table.h b/sdk-modifications/libsrc/fs/file_allocation_table.h new file mode 100755 index 0000000..4fb4149 --- /dev/null +++ b/sdk-modifications/libsrc/fs/file_allocation_table.h @@ -0,0 +1,64 @@ +/* + file_allocation_table.h + Reading, writing and manipulation of the FAT structure on + a FAT partition + + 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 + + 2006-10-01 - Chishm + * Added _FAT_fat_linkFreeClusterCleared to clear a cluster when it is allocated +*/ + +#ifndef _FAT_H +#define _FAT_H + +#include "fs_common.h" +#include "partition.h" + +#define CLUSTER_EOF_16 0xFFFF +#define CLUSTER_EOF 0x0FFFFFFF +#define CLUSTER_FREE 0x0000 +#define CLUSTER_FIRST 0x0002 + +#define CLUSTERS_PER_FAT12 4085 +#define CLUSTERS_PER_FAT16 65525 + + +u32 _FAT_fat_nextCluster(PARTITION* partition, u32 cluster); + +u32 _FAT_fat_linkFreeCluster(PARTITION* partition, u32 cluster); +u32 _FAT_fat_linkFreeClusterCleared (PARTITION* partition, u32 cluster); + +bool _FAT_fat_clearLinks (PARTITION* partition, u32 cluster); + +u32 _FAT_fat_lastCluster (PARTITION* partition, u32 cluster); + +static inline u32 _FAT_fat_clusterToSector (PARTITION* partition, u32 cluster) { + return (cluster >= 2) ? ((cluster - 2) * partition->sectorsPerCluster) + partition->dataStart : partition->rootDirStart; +} + +#endif // _FAT_H |