source: rtems/c/src/lib/libbsp/arm/nds/libfat/source/file_allocation_table.h @ 311dfa6

4.104.114.95
Last change on this file since 311dfa6 was 311dfa6, checked in by Joel Sherrill <joel.sherrill@…>, on 04/16/08 at 18:37:33

2008-04-16 Matthieu Bucchianeri <mbucchia@…>

  • ChangeLog?, Makefile.am, README, bsp_specs, configure.ac, mk_libnds.sh, patch.libnds, preinstall.am, block/block.c, clock/clock.c, console/console.c, coproc/coproc.S, coproc/coproc.c, coproc/coproc.ld, dswifi/dswifi_license.txt, dswifi/makefile, dswifi/arm7/makefile, dswifi/arm7/source/wifi_arm7.c, dswifi/arm7/source/wifi_arm7.h, dswifi/arm9/makefile, dswifi/arm9/source/sgIP.c, dswifi/arm9/source/sgIP.h, dswifi/arm9/source/sgIP_ARP.c, dswifi/arm9/source/sgIP_ARP.h, dswifi/arm9/source/sgIP_Config.h, dswifi/arm9/source/sgIP_DHCP.c, dswifi/arm9/source/sgIP_DHCP.h, dswifi/arm9/source/sgIP_DNS.c, dswifi/arm9/source/sgIP_DNS.h, dswifi/arm9/source/sgIP_Hub.c, dswifi/arm9/source/sgIP_Hub.h, dswifi/arm9/source/sgIP_ICMP.c, dswifi/arm9/source/sgIP_ICMP.h, dswifi/arm9/source/sgIP_IP.c, dswifi/arm9/source/sgIP_IP.h, dswifi/arm9/source/sgIP_TCP.c, dswifi/arm9/source/sgIP_TCP.h, dswifi/arm9/source/sgIP_UDP.c, dswifi/arm9/source/sgIP_UDP.h, dswifi/arm9/source/sgIP_memblock.c, dswifi/arm9/source/sgIP_memblock.h, dswifi/arm9/source/sgIP_sockets.c, dswifi/arm9/source/sgIP_sockets.h, dswifi/arm9/source/wifi_arm9.c, dswifi/arm9/source/wifi_arm9.h, dswifi/common/source/dsregs.h, dswifi/common/source/spinlock.h, dswifi/common/source/spinlock.s, dswifi/common/source/wifi_shared.h, dswifi/include/dswifi7.h, dswifi/include/dswifi9.h, dswifi/include/dswifi_version.h, dswifi/include/netdb.h, dswifi/include/sgIP_errno.h, dswifi/include/netinet/in.h, fb/fb.c, fb/fb.h, include/bsp.h, include/my_ipc.h, include/tm27.h, include/types.h, include/sys/iosupport.h, irq/irq.c, irq/irq.h, libfat/gba/include/fat.h, libfat/include/fat.h, libfat/nds/include/fat.h, libfat/source/bit_ops.h, libfat/source/cache.c, libfat/source/cache.h, libfat/source/common.h, libfat/source/directory.c, libfat/source/directory.h, libfat/source/fatdir.c, libfat/source/fatdir.h, libfat/source/fatfile.c, libfat/source/fatfile.h, libfat/source/file_allocation_table.c, libfat/source/file_allocation_table.h, libfat/source/filetime.c, libfat/source/filetime.h, libfat/source/libfat.c, libfat/source/mem_allocate.h, libfat/source/partition.c, libfat/source/partition.h, libfat/source/disc_io/disc.c, libfat/source/disc_io/disc.h, libfat/source/disc_io/disc_io.h, libfat/source/disc_io/io_cf_common.c, libfat/source/disc_io/io_cf_common.h, libfat/source/disc_io/io_dldi.h, libfat/source/disc_io/io_dldi.s, libfat/source/disc_io/io_efa2.c, libfat/source/disc_io/io_efa2.h, libfat/source/disc_io/io_fcsr.c, libfat/source/disc_io/io_fcsr.h, libfat/source/disc_io/io_m3_common.c, libfat/source/disc_io/io_m3_common.h, libfat/source/disc_io/io_m3cf.c, libfat/source/disc_io/io_m3cf.h, libfat/source/disc_io/io_m3sd.c, libfat/source/disc_io/io_m3sd.h, libfat/source/disc_io/io_mpcf.c, libfat/source/disc_io/io_mpcf.h, libfat/source/disc_io/io_njsd.c, libfat/source/disc_io/io_njsd.h, libfat/source/disc_io/io_nmmc.c, libfat/source/disc_io/io_nmmc.h, libfat/source/disc_io/io_sc_common.c, libfat/source/disc_io/io_sc_common.h, libfat/source/disc_io/io_sccf.c, libfat/source/disc_io/io_sccf.h, libfat/source/disc_io/io_scsd.c, libfat/source/disc_io/io_scsd.h, libfat/source/disc_io/io_scsd_s.s, libfat/source/disc_io/io_sd_common.c, libfat/source/disc_io/io_sd_common.h, libnds/Makefile.arm7, libnds/Makefile.arm9, libnds/libnds_license.txt, libnds/basicARM7/source/defaultARM7.c, libnds/include/default_font_bin.h, libnds/include/gbfs.h, libnds/include/nds.h, libnds/include/nds/bios.h, libnds/include/nds/card.h, libnds/include/nds/dma.h, libnds/include/nds/interrupts.h, libnds/include/nds/ipc.h, libnds/include/nds/jtypes.h, libnds/include/nds/memory.h, libnds/include/nds/registers_alt.h, libnds/include/nds/reload.h, libnds/include/nds/system.h, libnds/include/nds/timers.h, libnds/include/nds/arm7/audio.h, libnds/include/nds/arm7/clock.h, libnds/include/nds/arm7/serial.h, libnds/include/nds/arm7/touch.h, libnds/include/nds/arm9/background.h, libnds/include/nds/arm9/boxtest.h, libnds/include/nds/arm9/cache.h, libnds/include/nds/arm9/console.h, libnds/include/nds/arm9/exceptions.h, libnds/include/nds/arm9/image.h, libnds/include/nds/arm9/input.h, libnds/include/nds/arm9/math.h, libnds/include/nds/arm9/ndsmotion.h, libnds/include/nds/arm9/pcx.h, libnds/include/nds/arm9/postest.h, libnds/include/nds/arm9/rumble.h, libnds/include/nds/arm9/sound.h, libnds/include/nds/arm9/sprite.h, libnds/include/nds/arm9/trig_lut.h, libnds/include/nds/arm9/video.h, libnds/include/nds/arm9/videoGL.h, libnds/source/arm7/audio.c, libnds/source/arm7/clock.c, libnds/source/arm7/microphone.c, libnds/source/arm7/spi.c, libnds/source/arm7/touch.c, libnds/source/arm7/userSettings.c, libnds/source/arm9/COS.bin, libnds/source/arm9/COS.s, libnds/source/arm9/SIN.bin, libnds/source/arm9/SIN.s, libnds/source/arm9/TAN.bin, libnds/source/arm9/TAN.s, libnds/source/arm9/boxtest.c, libnds/source/arm9/console.c, libnds/source/arm9/dcache.s, libnds/source/arm9/default_font.bin, libnds/source/arm9/default_font.s, libnds/source/arm9/exceptionHandler.S, libnds/source/arm9/exceptionHandler.s, libnds/source/arm9/exceptions.c, libnds/source/arm9/gurumeditation.c, libnds/source/arm9/icache.s, libnds/source/arm9/image.c, libnds/source/arm9/initSystem.c, libnds/source/arm9/keys.c, libnds/source/arm9/ndsmotion.c, libnds/source/arm9/pcx.c, libnds/source/arm9/rumble.c, libnds/source/arm9/sound.c, libnds/source/arm9/system.c, libnds/source/arm9/touch.c, libnds/source/arm9/video.c, libnds/source/arm9/videoGL.c, libnds/source/common/biosCalls.s, libnds/source/common/card.c, libnds/source/common/gbfs.c, libnds/source/common/interruptDispatcher.s, libnds/source/common/interrupts.c, rtc/rtc.c, sound/sound.c, sound/sound.h, start/start.S, startup/linkcmds, startup/start.c, timer/timer.c, tools/Makefile.am, tools/bin2s, tools/bin2s.c, tools/configure.ac, tools/runtest, tools/ndstool/include/arm7_sha1_homebrew.h, tools/ndstool/include/arm7_sha1_nintendo.h, tools/ndstool/include/banner.h, tools/ndstool/include/bigint.h, tools/ndstool/include/crc.h, tools/ndstool/include/default_icon.h, tools/ndstool/include/encryption.h, tools/ndstool/include/header.h, tools/ndstool/include/hook.h, tools/ndstool/include/little.h, tools/ndstool/include/loadme.h, tools/ndstool/include/logo.h, tools/ndstool/include/ndscreate.h, tools/ndstool/include/ndsextract.h, tools/ndstool/include/ndstool.h, tools/ndstool/include/ndstree.h, tools/ndstool/include/overlay.h, tools/ndstool/include/passme.h, tools/ndstool/include/passme_sram.h, tools/ndstool/include/passme_vhd1.h, tools/ndstool/include/passme_vhd2.h, tools/ndstool/include/raster.h, tools/ndstool/include/sha1.h, tools/ndstool/include/types.h, tools/ndstool/source/arm7_sha1_homebrew.c, tools/ndstool/source/arm7_sha1_nintendo.c, tools/ndstool/source/banner.cpp, tools/ndstool/source/bigint.cpp, tools/ndstool/source/compile_date.c, tools/ndstool/source/crc.cpp, tools/ndstool/source/default_icon.c, tools/ndstool/source/encryption.cpp, tools/ndstool/source/header.cpp, tools/ndstool/source/hook.cpp, tools/ndstool/source/loadme.c, tools/ndstool/source/logo.cpp, tools/ndstool/source/ndscodes.cpp, tools/ndstool/source/ndscreate.cpp, tools/ndstool/source/ndsextract.cpp, tools/ndstool/source/ndstool.cpp, tools/ndstool/source/ndstree.cpp, tools/ndstool/source/passme.cpp, tools/ndstool/source/passme_sram.c, tools/ndstool/source/raster.cpp, tools/ndstool/source/sha1.cpp, touchscreen/README.reco, touchscreen/parser.c, touchscreen/reco.c, touchscreen/reco.h, touchscreen/touchscreen.c, touchscreen/touchscreen.h, wifi/compat.c, wifi/compat.h, wifi/wifi.c: New files.
  • Property mode set to 100644
File size: 2.4 KB
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1/*
2 file_allocation_table.h
3 Reading, writing and manipulation of the FAT structure on
4 a FAT partition
5
6 Copyright (c) 2006 Michael "Chishm" Chisholm
7       
8 Redistribution and use in source and binary forms, with or without modification,
9 are permitted provided that the following conditions are met:
10
11  1. Redistributions of source code must retain the above copyright notice,
12     this list of conditions and the following disclaimer.
13  2. Redistributions in binary form must reproduce the above copyright notice,
14     this list of conditions and the following disclaimer in the documentation and/or
15     other materials provided with the distribution.
16  3. The name of the author may not be used to endorse or promote products derived
17     from this software without specific prior written permission.
18
19 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
20 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
21 AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
22 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
27 EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29        2006-07-11 - Chishm
30                * Original release
31
32        2006-10-01 - Chishm
33                * Added _FAT_fat_linkFreeClusterCleared to clear a cluster when it is allocated
34*/
35
36#ifndef _FAT_H
37#define _FAT_H
38
39#include "common.h"
40#include "partition.h"
41
42#define CLUSTER_EOF_16  0xFFFF
43#define CLUSTER_EOF     0x0FFFFFFF
44#define CLUSTER_FREE    0x0000
45#define CLUSTER_FIRST   0x0002
46
47#define CLUSTERS_PER_FAT12 4085
48#define CLUSTERS_PER_FAT16 65525
49
50
51u32 _FAT_fat_nextCluster(PARTITION* partition, u32 cluster);
52
53u32 _FAT_fat_linkFreeCluster(PARTITION* partition, u32 cluster);
54u32 _FAT_fat_linkFreeClusterCleared (PARTITION* partition, u32 cluster);
55
56bool _FAT_fat_clearLinks (PARTITION* partition, u32 cluster);
57
58u32 _FAT_fat_lastCluster (PARTITION* partition, u32 cluster);
59
60static inline u32 _FAT_fat_clusterToSector (PARTITION* partition, u32 cluster) {
61        return (cluster >= 2) ? ((cluster - 2) * partition->sectorsPerCluster) + partition->dataStart : partition->rootDirStart;
62}
63
64#endif // _FAT_H
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