mirror of
https://github.com/wiiu-env/wiiu-nanddumper-payload.git
synced 2024-11-22 03:19:17 +01:00
Add fat lib
This commit is contained in:
koolkdev
parent
fe9c3f8434
commit
b25b45c8f8
@ -17,10 +17,13 @@ LIBDIRS += -L$(CURDIR)/../libs
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LIBS += -lgcc
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CFILES = $(wildcard source/*.c)
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FAT_CFILES += $(wildcard source/fat/*.c)
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BINFILES = $(wildcard data/*.bin)
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OFILES = $(BINFILES:data/%.bin=build/%.bin.o)
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OFILES += $(CFILES:source/%.c=build/%.o)
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OFILES += $(FAT_CFILES:source/fat/%.c=build/%.o)
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DFILES = $(CFILES:source/%.c=build/%.d)
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DFILES += $(FAT_CFILES:source/fat/%.c=build/%.d)
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SFILES = $(wildcard source/*.s)
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OFILES += $(SFILES:source/%.s=build/%.o)
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PROJECTNAME = ${shell basename "$(CURDIR)"}
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@ -70,6 +73,11 @@ build/%.o: source/%.c
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@$(CC) $(CFLAGS) -c $< -o $@
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@$(CC) -MM $< > build/$*.d
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build/%.o: source/fat/%.c
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@echo "CC $(notdir $<)"
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@$(CC) $(CFLAGS) -c $< -o $@
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@$(CC) -MM $< > build/$*.d
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build/%.o: source/%.s
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@echo "CC $(notdir $<)"
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@$(CC) $(CFLAGS) -xassembler-with-cpp -c $< -o $@
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904
ios_fs/source/fat/fat_access.c
Normal file
904
ios_fs/source/fat/fat_access.c
Normal file
@ -0,0 +1,904 @@
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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// FAT16/32 File IO Library
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// V2.6
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// Ultra-Embedded.com
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// Copyright 2003 - 2012
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//
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// Email: admin@ultra-embedded.com
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//
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// License: GPL
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// If you would like a version with a more permissive license for use in
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// closed source commercial applications please contact me for details.
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//-----------------------------------------------------------------------------
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//
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// This file is part of FAT File IO Library.
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//
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// FAT File IO Library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// FAT File IO Library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with FAT File IO Library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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#include "../imports.h"
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#include "fat_defs.h"
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#include "fat_access.h"
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#include "fat_table.h"
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#include "fat_write.h"
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#include "fat_string.h"
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#include "fat_misc.h"
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//-----------------------------------------------------------------------------
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// fatfs_init: Load FAT Parameters
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//-----------------------------------------------------------------------------
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int fatfs_init(struct fatfs *fs)
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{
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uint8 num_of_fats;
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uint16 reserved_sectors;
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uint32 FATSz;
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uint32 root_dir_sectors;
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uint32 total_sectors;
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uint32 data_sectors;
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uint32 count_of_clusters;
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uint8 valid_partition = 0;
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fs->currentsector.address = FAT32_INVALID_CLUSTER;
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fs->currentsector.dirty = 0;
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fs->next_free_cluster = 0; // Invalid
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fatfs_fat_init(fs);
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// Make sure we have a read function (write function is optional)
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if (!fs->disk_io.read_media)
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return FAT_INIT_MEDIA_ACCESS_ERROR;
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// MBR: Sector 0 on the disk
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// NOTE: Some removeable media does not have this.
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// Load MBR (LBA 0) into the 512 byte buffer
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if (!fs->disk_io.read_media(0, fs->currentsector.sector, 1))
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return FAT_INIT_MEDIA_ACCESS_ERROR;
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// Make Sure 0x55 and 0xAA are at end of sector
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// (this should be the case regardless of the MBR or boot sector)
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if (fs->currentsector.sector[SIGNATURE_POSITION] != 0x55 || fs->currentsector.sector[SIGNATURE_POSITION+1] != 0xAA)
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return FAT_INIT_INVALID_SIGNATURE;
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// Now check again using the access function to prove endian conversion function
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if (GET_16BIT_WORD(fs->currentsector.sector, SIGNATURE_POSITION) != SIGNATURE_VALUE)
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return FAT_INIT_ENDIAN_ERROR;
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// Verify packed structures
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if (sizeof(struct fat_dir_entry) != FAT_DIR_ENTRY_SIZE)
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return FAT_INIT_STRUCT_PACKING;
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// Check the partition type code
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switch(fs->currentsector.sector[PARTITION1_TYPECODE_LOCATION])
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{
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case 0x0B:
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case 0x06:
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case 0x0C:
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case 0x0E:
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case 0x0F:
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case 0x05:
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valid_partition = 1;
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break;
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case 0x00:
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valid_partition = 0;
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break;
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default:
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if (fs->currentsector.sector[PARTITION1_TYPECODE_LOCATION] <= 0x06)
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valid_partition = 1;
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break;
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}
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// Read LBA Begin for the file system
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if (valid_partition)
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fs->lba_begin = GET_32BIT_WORD(fs->currentsector.sector, PARTITION1_LBA_BEGIN_LOCATION);
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// Else possibly MBR less disk
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else
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fs->lba_begin = 0;
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// Load Volume 1 table into sector buffer
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// (We may already have this in the buffer if MBR less drive!)
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if (!fs->disk_io.read_media(fs->lba_begin, fs->currentsector.sector, 1))
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return FAT_INIT_MEDIA_ACCESS_ERROR;
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// Make sure there are 512 bytes per cluster
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if (GET_16BIT_WORD(fs->currentsector.sector, 0x0B) != FAT_SECTOR_SIZE)
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return FAT_INIT_INVALID_SECTOR_SIZE;
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// Load Parameters of FAT partition
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fs->sectors_per_cluster = fs->currentsector.sector[BPB_SECPERCLUS];
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reserved_sectors = GET_16BIT_WORD(fs->currentsector.sector, BPB_RSVDSECCNT);
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num_of_fats = fs->currentsector.sector[BPB_NUMFATS];
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fs->root_entry_count = GET_16BIT_WORD(fs->currentsector.sector, BPB_ROOTENTCNT);
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if(GET_16BIT_WORD(fs->currentsector.sector, BPB_FATSZ16) != 0)
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fs->fat_sectors = GET_16BIT_WORD(fs->currentsector.sector, BPB_FATSZ16);
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else
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fs->fat_sectors = GET_32BIT_WORD(fs->currentsector.sector, BPB_FAT32_FATSZ32);
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// For FAT32 (which this may be)
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fs->rootdir_first_cluster = GET_32BIT_WORD(fs->currentsector.sector, BPB_FAT32_ROOTCLUS);
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fs->fs_info_sector = GET_16BIT_WORD(fs->currentsector.sector, BPB_FAT32_FSINFO);
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// For FAT16 (which this may be), rootdir_first_cluster is actuall rootdir_first_sector
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fs->rootdir_first_sector = reserved_sectors + (num_of_fats * fs->fat_sectors);
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fs->rootdir_sectors = ((fs->root_entry_count * 32) + (FAT_SECTOR_SIZE - 1)) / FAT_SECTOR_SIZE;
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// First FAT LBA address
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fs->fat_begin_lba = fs->lba_begin + reserved_sectors;
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// The address of the first data cluster on this volume
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fs->cluster_begin_lba = fs->fat_begin_lba + (num_of_fats * fs->fat_sectors);
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if (GET_16BIT_WORD(fs->currentsector.sector, 0x1FE) != 0xAA55) // This signature should be AA55
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return FAT_INIT_INVALID_SIGNATURE;
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// Calculate the root dir sectors
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root_dir_sectors = ((GET_16BIT_WORD(fs->currentsector.sector, BPB_ROOTENTCNT) * 32) + (GET_16BIT_WORD(fs->currentsector.sector, BPB_BYTSPERSEC) - 1)) / GET_16BIT_WORD(fs->currentsector.sector, BPB_BYTSPERSEC);
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if(GET_16BIT_WORD(fs->currentsector.sector, BPB_FATSZ16) != 0)
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FATSz = GET_16BIT_WORD(fs->currentsector.sector, BPB_FATSZ16);
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else
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FATSz = GET_32BIT_WORD(fs->currentsector.sector, BPB_FAT32_FATSZ32);
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if(GET_16BIT_WORD(fs->currentsector.sector, BPB_TOTSEC16) != 0)
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total_sectors = GET_16BIT_WORD(fs->currentsector.sector, BPB_TOTSEC16);
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else
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total_sectors = GET_32BIT_WORD(fs->currentsector.sector, BPB_TOTSEC32);
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data_sectors = total_sectors - (GET_16BIT_WORD(fs->currentsector.sector, BPB_RSVDSECCNT) + (fs->currentsector.sector[BPB_NUMFATS] * FATSz) + root_dir_sectors);
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// Find out which version of FAT this is...
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if (fs->sectors_per_cluster != 0)
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{
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count_of_clusters = data_sectors / fs->sectors_per_cluster;
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if(count_of_clusters < 4085)
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// Volume is FAT12
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return FAT_INIT_WRONG_FILESYS_TYPE;
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else if(count_of_clusters < 65525)
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{
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// Clear this FAT32 specific param
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fs->rootdir_first_cluster = 0;
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// Volume is FAT16
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fs->fat_type = FAT_TYPE_16;
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return FAT_INIT_OK;
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}
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else
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{
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// Volume is FAT32
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fs->fat_type = FAT_TYPE_32;
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return FAT_INIT_OK;
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}
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}
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else
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return FAT_INIT_WRONG_FILESYS_TYPE;
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}
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//-----------------------------------------------------------------------------
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// fatfs_lba_of_cluster: This function converts a cluster number into a sector /
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// LBA number.
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//-----------------------------------------------------------------------------
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uint32 fatfs_lba_of_cluster(struct fatfs *fs, uint32 Cluster_Number)
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{
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if (fs->fat_type == FAT_TYPE_16)
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return (fs->cluster_begin_lba + (fs->root_entry_count * 32 / FAT_SECTOR_SIZE) + ((Cluster_Number-2) * fs->sectors_per_cluster));
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else
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return ((fs->cluster_begin_lba + ((Cluster_Number-2)*fs->sectors_per_cluster)));
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}
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//-----------------------------------------------------------------------------
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// fatfs_sector_read:
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//-----------------------------------------------------------------------------
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int fatfs_sector_read(struct fatfs *fs, uint32 lba, uint8 *target, uint32 count)
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{
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return fs->disk_io.read_media(lba, target, count);
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}
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//-----------------------------------------------------------------------------
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// fatfs_sector_write:
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//-----------------------------------------------------------------------------
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int fatfs_sector_write(struct fatfs *fs, uint32 lba, uint8 *target, uint32 count)
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{
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return fs->disk_io.write_media(lba, target, count);
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}
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//-----------------------------------------------------------------------------
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// fatfs_sector_reader: From the provided startcluster and sector offset
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// Returns True if success, returns False if not (including if read out of range)
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//-----------------------------------------------------------------------------
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int fatfs_sector_reader(struct fatfs *fs, uint32 start_cluster, uint32 offset, uint8 *target)
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{
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uint32 sector_to_read = 0;
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uint32 cluster_to_read = 0;
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uint32 cluster_chain = 0;
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uint32 i;
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uint32 lba;
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// FAT16 Root directory
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if (fs->fat_type == FAT_TYPE_16 && start_cluster == 0)
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{
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if (offset < fs->rootdir_sectors)
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lba = fs->lba_begin + fs->rootdir_first_sector + offset;
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else
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return 0;
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}
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// FAT16/32 Other
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else
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{
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// Set start of cluster chain to initial value
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cluster_chain = start_cluster;
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// Find parameters
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cluster_to_read = offset / fs->sectors_per_cluster;
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sector_to_read = offset - (cluster_to_read*fs->sectors_per_cluster);
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// Follow chain to find cluster to read
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for (i=0; i<cluster_to_read; i++)
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cluster_chain = fatfs_find_next_cluster(fs, cluster_chain);
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// If end of cluster chain then return false
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if (cluster_chain == FAT32_LAST_CLUSTER)
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return 0;
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// Calculate sector address
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lba = fatfs_lba_of_cluster(fs, cluster_chain)+sector_to_read;
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}
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// User provided target array
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if (target)
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return fs->disk_io.read_media(lba, target, 1);
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// Else read sector if not already loaded
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else if (lba != fs->currentsector.address)
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{
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fs->currentsector.address = lba;
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return fs->disk_io.read_media(fs->currentsector.address, fs->currentsector.sector, 1);
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}
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else
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return 1;
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}
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//-----------------------------------------------------------------------------
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// fatfs_read_sector: Read from the provided cluster and sector offset
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// Returns True if success, returns False if not
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//-----------------------------------------------------------------------------
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int fatfs_read_sector(struct fatfs *fs, uint32 cluster, uint32 sector, uint8 *target)
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{
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// FAT16 Root directory
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if (fs->fat_type == FAT_TYPE_16 && cluster == 0)
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{
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uint32 lba;
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// In FAT16, there are a limited amount of sectors in root dir!
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if (sector < fs->rootdir_sectors)
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lba = fs->lba_begin + fs->rootdir_first_sector + sector;
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else
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return 0;
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// User target buffer passed in
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if (target)
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{
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// Read from disk
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return fs->disk_io.read_media(lba, target, 1);
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}
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else
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{
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// Calculate read address
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fs->currentsector.address = lba;
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// Read from disk
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return fs->disk_io.read_media(fs->currentsector.address, fs->currentsector.sector, 1);
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}
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}
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// FAT16/32 Other
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else
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{
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// User target buffer passed in
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if (target)
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{
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// Calculate read address
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uint32 lba = fatfs_lba_of_cluster(fs, cluster) + sector;
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// Read from disk
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return fs->disk_io.read_media(lba, target, 1);
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}
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else
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{
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// Calculate write address
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fs->currentsector.address = fatfs_lba_of_cluster(fs, cluster)+sector;
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// Read from disk
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return fs->disk_io.read_media(fs->currentsector.address, fs->currentsector.sector, 1);
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}
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}
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}
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//-----------------------------------------------------------------------------
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// fatfs_write_sector: Write to the provided cluster and sector offset
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// Returns True if success, returns False if not
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//-----------------------------------------------------------------------------
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#if FATFS_INC_WRITE_SUPPORT
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int fatfs_write_sector(struct fatfs *fs, uint32 cluster, uint32 sector, uint8 *target)
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{
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// No write access?
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if (!fs->disk_io.write_media)
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return 0;
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// FAT16 Root directory
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if (fs->fat_type == FAT_TYPE_16 && cluster == 0)
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{
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uint32 lba;
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// In FAT16 we cannot extend the root dir!
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if (sector < fs->rootdir_sectors)
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lba = fs->lba_begin + fs->rootdir_first_sector + sector;
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else
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return 0;
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// User target buffer passed in
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if (target)
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{
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// Write to disk
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return fs->disk_io.write_media(lba, target, 1);
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}
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else
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{
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// Calculate write address
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fs->currentsector.address = lba;
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// Write to disk
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return fs->disk_io.write_media(fs->currentsector.address, fs->currentsector.sector, 1);
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}
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}
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// FAT16/32 Other
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else
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{
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// User target buffer passed in
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if (target)
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{
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// Calculate write address
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uint32 lba = fatfs_lba_of_cluster(fs, cluster) + sector;
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// Write to disk
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return fs->disk_io.write_media(lba, target, 1);
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}
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else
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{
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// Calculate write address
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fs->currentsector.address = fatfs_lba_of_cluster(fs, cluster)+sector;
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// Write to disk
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return fs->disk_io.write_media(fs->currentsector.address, fs->currentsector.sector, 1);
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}
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}
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}
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#endif
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//-----------------------------------------------------------------------------
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// fatfs_show_details: Show the details about the filesystem
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//-----------------------------------------------------------------------------
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void fatfs_show_details(struct fatfs *fs)
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{
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FAT_PRINTF(("FAT details:\r\n"));
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FAT_PRINTF((" Type =%s", (fs->fat_type == FAT_TYPE_32) ? "FAT32": "FAT16"));
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FAT_PRINTF((" Root Dir First Cluster = %x\r\n", fs->rootdir_first_cluster));
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FAT_PRINTF((" FAT Begin LBA = 0x%x\r\n",fs->fat_begin_lba));
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FAT_PRINTF((" Cluster Begin LBA = 0x%x\r\n",fs->cluster_begin_lba));
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FAT_PRINTF((" Sectors Per Cluster = %d\r\n", fs->sectors_per_cluster));
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}
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//-----------------------------------------------------------------------------
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// fatfs_get_root_cluster: Get the root dir cluster
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//-----------------------------------------------------------------------------
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uint32 fatfs_get_root_cluster(struct fatfs *fs)
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{
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// NOTE: On FAT16 this will be 0 which has a special meaning...
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return fs->rootdir_first_cluster;
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}
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//-------------------------------------------------------------
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// fatfs_get_file_entry: Find the file entry for a filename
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//-------------------------------------------------------------
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uint32 fatfs_get_file_entry(struct fatfs *fs, uint32 Cluster, char *name_to_find, struct fat_dir_entry *sfEntry)
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{
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uint8 item=0;
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uint16 recordoffset = 0;
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uint8 i=0;
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int x=0;
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char *long_filename = NULL;
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char short_filename[13];
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struct lfn_cache lfn;
|
||||
int dotRequired = 0;
|
||||
struct fat_dir_entry *directoryEntry;
|
||||
|
||||
fatfs_lfn_cache_init(&lfn, 1);
|
||||
|
||||
// Main cluster following loop
|
||||
while (1)
|
||||
{
|
||||
// Read sector
|
||||
if (fatfs_sector_reader(fs, Cluster, x++, 0)) // If sector read was successfull
|
||||
{
|
||||
// Analyse Sector
|
||||
for (item = 0; item < FAT_DIR_ENTRIES_PER_SECTOR; item++)
|
||||
{
|
||||
// Create the multiplier for sector access
|
||||
recordoffset = FAT_DIR_ENTRY_SIZE * item;
|
||||
|
||||
// Overlay directory entry over buffer
|
||||
directoryEntry = (struct fat_dir_entry*)(fs->currentsector.sector+recordoffset);
|
||||
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
// Long File Name Text Found
|
||||
if (fatfs_entry_lfn_text(directoryEntry) )
|
||||
fatfs_lfn_cache_entry(&lfn, fs->currentsector.sector+recordoffset);
|
||||
|
||||
// If Invalid record found delete any long file name information collated
|
||||
else if (fatfs_entry_lfn_invalid(directoryEntry) )
|
||||
fatfs_lfn_cache_init(&lfn, 0);
|
||||
|
||||
// Normal SFN Entry and Long text exists
|
||||
else if (fatfs_entry_lfn_exists(&lfn, directoryEntry) )
|
||||
{
|
||||
long_filename = fatfs_lfn_cache_get(&lfn);
|
||||
|
||||
// Compare names to see if they match
|
||||
if (fatfs_compare_names(long_filename, name_to_find))
|
||||
{
|
||||
memcpy(sfEntry,directoryEntry,sizeof(struct fat_dir_entry));
|
||||
return 1;
|
||||
}
|
||||
|
||||
fatfs_lfn_cache_init(&lfn, 0);
|
||||
}
|
||||
else
|
||||
#endif
|
||||
// Normal Entry, only 8.3 Text
|
||||
if (fatfs_entry_sfn_only(directoryEntry) )
|
||||
{
|
||||
memset(short_filename, 0, sizeof(short_filename));
|
||||
|
||||
// Copy name to string
|
||||
for (i=0; i<8; i++)
|
||||
short_filename[i] = directoryEntry->Name[i];
|
||||
|
||||
// Extension
|
||||
dotRequired = 0;
|
||||
for (i=8; i<11; i++)
|
||||
{
|
||||
short_filename[i+1] = directoryEntry->Name[i];
|
||||
if (directoryEntry->Name[i] != ' ')
|
||||
dotRequired = 1;
|
||||
}
|
||||
|
||||
// Dot only required if extension present
|
||||
if (dotRequired)
|
||||
{
|
||||
// If not . or .. entry
|
||||
if (short_filename[0]!='.')
|
||||
short_filename[8] = '.';
|
||||
else
|
||||
short_filename[8] = ' ';
|
||||
}
|
||||
else
|
||||
short_filename[8] = ' ';
|
||||
|
||||
// Compare names to see if they match
|
||||
if (fatfs_compare_names(short_filename, name_to_find))
|
||||
{
|
||||
memcpy(sfEntry,directoryEntry,sizeof(struct fat_dir_entry));
|
||||
return 1;
|
||||
}
|
||||
|
||||
fatfs_lfn_cache_init(&lfn, 0);
|
||||
}
|
||||
} // End of if
|
||||
}
|
||||
else
|
||||
break;
|
||||
} // End of while loop
|
||||
|
||||
return 0;
|
||||
}
|
||||
//-------------------------------------------------------------
|
||||
// fatfs_sfn_exists: Check if a short filename exists.
|
||||
// NOTE: shortname is XXXXXXXXYYY not XXXXXXXX.YYY
|
||||
//-------------------------------------------------------------
|
||||
#if FATFS_INC_WRITE_SUPPORT
|
||||
int fatfs_sfn_exists(struct fatfs *fs, uint32 Cluster, char *shortname)
|
||||
{
|
||||
uint8 item=0;
|
||||
uint16 recordoffset = 0;
|
||||
int x=0;
|
||||
struct fat_dir_entry *directoryEntry;
|
||||
|
||||
// Main cluster following loop
|
||||
while (1)
|
||||
{
|
||||
// Read sector
|
||||
if (fatfs_sector_reader(fs, Cluster, x++, 0)) // If sector read was successfull
|
||||
{
|
||||
// Analyse Sector
|
||||
for (item = 0; item < FAT_DIR_ENTRIES_PER_SECTOR; item++)
|
||||
{
|
||||
// Create the multiplier for sector access
|
||||
recordoffset = FAT_DIR_ENTRY_SIZE * item;
|
||||
|
||||
// Overlay directory entry over buffer
|
||||
directoryEntry = (struct fat_dir_entry*)(fs->currentsector.sector+recordoffset);
|
||||
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
// Long File Name Text Found
|
||||
if (fatfs_entry_lfn_text(directoryEntry) )
|
||||
;
|
||||
|
||||
// If Invalid record found delete any long file name information collated
|
||||
else if (fatfs_entry_lfn_invalid(directoryEntry) )
|
||||
;
|
||||
else
|
||||
#endif
|
||||
// Normal Entry, only 8.3 Text
|
||||
if (fatfs_entry_sfn_only(directoryEntry) )
|
||||
{
|
||||
if (strncmp((const char*)directoryEntry->Name, shortname, 11)==0)
|
||||
return 1;
|
||||
}
|
||||
} // End of if
|
||||
}
|
||||
else
|
||||
break;
|
||||
} // End of while loop
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
//-------------------------------------------------------------
|
||||
// fatfs_update_timestamps: Update date/time details
|
||||
//-------------------------------------------------------------
|
||||
#if FATFS_INC_TIME_DATE_SUPPORT
|
||||
int fatfs_update_timestamps(struct fat_dir_entry *directoryEntry, int create, int modify, int access)
|
||||
{
|
||||
time_t time_now;
|
||||
struct tm * time_info;
|
||||
uint16 fat_time;
|
||||
uint16 fat_date;
|
||||
|
||||
// Get system time
|
||||
time(&time_now);
|
||||
|
||||
// Convert to local time
|
||||
time_info = localtime(&time_now);
|
||||
|
||||
// Convert time to FAT format
|
||||
fat_time = fatfs_convert_to_fat_time(time_info->tm_hour, time_info->tm_min, time_info->tm_sec);
|
||||
|
||||
// Convert date to FAT format
|
||||
fat_date = fatfs_convert_to_fat_date(time_info->tm_mday, time_info->tm_mon + 1, time_info->tm_year + 1900);
|
||||
|
||||
// Update requested fields
|
||||
if (create)
|
||||
{
|
||||
directoryEntry->CrtTime[1] = fat_time >> 8;
|
||||
directoryEntry->CrtTime[0] = fat_time >> 0;
|
||||
directoryEntry->CrtDate[1] = fat_date >> 8;
|
||||
directoryEntry->CrtDate[0] = fat_date >> 0;
|
||||
}
|
||||
|
||||
if (modify)
|
||||
{
|
||||
directoryEntry->WrtTime[1] = fat_time >> 8;
|
||||
directoryEntry->WrtTime[0] = fat_time >> 0;
|
||||
directoryEntry->WrtDate[1] = fat_date >> 8;
|
||||
directoryEntry->WrtDate[0] = fat_date >> 0;
|
||||
}
|
||||
|
||||
if (access)
|
||||
{
|
||||
directoryEntry->LstAccDate[1] = fat_time >> 8;
|
||||
directoryEntry->LstAccDate[0] = fat_time >> 0;
|
||||
directoryEntry->LstAccDate[1] = fat_date >> 8;
|
||||
directoryEntry->LstAccDate[0] = fat_date >> 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
#endif
|
||||
//-------------------------------------------------------------
|
||||
// fatfs_update_file_length: Find a SFN entry and update it
|
||||
// NOTE: shortname is XXXXXXXXYYY not XXXXXXXX.YYY
|
||||
//-------------------------------------------------------------
|
||||
#if FATFS_INC_WRITE_SUPPORT
|
||||
int fatfs_update_file_length(struct fatfs *fs, uint32 Cluster, char *shortname, uint32 fileLength)
|
||||
{
|
||||
uint8 item=0;
|
||||
uint16 recordoffset = 0;
|
||||
int x=0;
|
||||
struct fat_dir_entry *directoryEntry;
|
||||
|
||||
// No write access?
|
||||
if (!fs->disk_io.write_media)
|
||||
return 0;
|
||||
|
||||
// Main cluster following loop
|
||||
while (1)
|
||||
{
|
||||
// Read sector
|
||||
if (fatfs_sector_reader(fs, Cluster, x++, 0)) // If sector read was successfull
|
||||
{
|
||||
// Analyse Sector
|
||||
for (item = 0; item < FAT_DIR_ENTRIES_PER_SECTOR; item++)
|
||||
{
|
||||
// Create the multiplier for sector access
|
||||
recordoffset = FAT_DIR_ENTRY_SIZE * item;
|
||||
|
||||
// Overlay directory entry over buffer
|
||||
directoryEntry = (struct fat_dir_entry*)(fs->currentsector.sector+recordoffset);
|
||||
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
// Long File Name Text Found
|
||||
if (fatfs_entry_lfn_text(directoryEntry) )
|
||||
;
|
||||
|
||||
// If Invalid record found delete any long file name information collated
|
||||
else if (fatfs_entry_lfn_invalid(directoryEntry) )
|
||||
;
|
||||
|
||||
// Normal Entry, only 8.3 Text
|
||||
else
|
||||
#endif
|
||||
if (fatfs_entry_sfn_only(directoryEntry) )
|
||||
{
|
||||
if (strncmp((const char*)directoryEntry->Name, shortname, 11)==0)
|
||||
{
|
||||
directoryEntry->FileSize = FAT_HTONL(fileLength);
|
||||
|
||||
#if FATFS_INC_TIME_DATE_SUPPORT
|
||||
// Update access / modify time & date
|
||||
fatfs_update_timestamps(directoryEntry, 0, 1, 1);
|
||||
#endif
|
||||
|
||||
// Update sfn entry
|
||||
memcpy((uint8*)(fs->currentsector.sector+recordoffset), (uint8*)directoryEntry, sizeof(struct fat_dir_entry));
|
||||
|
||||
// Write sector back
|
||||
return fs->disk_io.write_media(fs->currentsector.address, fs->currentsector.sector, 1);
|
||||
}
|
||||
}
|
||||
} // End of if
|
||||
}
|
||||
else
|
||||
break;
|
||||
} // End of while loop
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
//-------------------------------------------------------------
|
||||
// fatfs_mark_file_deleted: Find a SFN entry and mark if as deleted
|
||||
// NOTE: shortname is XXXXXXXXYYY not XXXXXXXX.YYY
|
||||
//-------------------------------------------------------------
|
||||
#if FATFS_INC_WRITE_SUPPORT
|
||||
int fatfs_mark_file_deleted(struct fatfs *fs, uint32 Cluster, char *shortname)
|
||||
{
|
||||
uint8 item=0;
|
||||
uint16 recordoffset = 0;
|
||||
int x=0;
|
||||
struct fat_dir_entry *directoryEntry;
|
||||
|
||||
// No write access?
|
||||
if (!fs->disk_io.write_media)
|
||||
return 0;
|
||||
|
||||
// Main cluster following loop
|
||||
while (1)
|
||||
{
|
||||
// Read sector
|
||||
if (fatfs_sector_reader(fs, Cluster, x++, 0)) // If sector read was successfull
|
||||
{
|
||||
// Analyse Sector
|
||||
for (item = 0; item < FAT_DIR_ENTRIES_PER_SECTOR; item++)
|
||||
{
|
||||
// Create the multiplier for sector access
|
||||
recordoffset = FAT_DIR_ENTRY_SIZE * item;
|
||||
|
||||
// Overlay directory entry over buffer
|
||||
directoryEntry = (struct fat_dir_entry*)(fs->currentsector.sector+recordoffset);
|
||||
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
// Long File Name Text Found
|
||||
if (fatfs_entry_lfn_text(directoryEntry) )
|
||||
;
|
||||
|
||||
// If Invalid record found delete any long file name information collated
|
||||
else if (fatfs_entry_lfn_invalid(directoryEntry) )
|
||||
;
|
||||
|
||||
// Normal Entry, only 8.3 Text
|
||||
else
|
||||
#endif
|
||||
if (fatfs_entry_sfn_only(directoryEntry) )
|
||||
{
|
||||
if (strncmp((const char *)directoryEntry->Name, shortname, 11)==0)
|
||||
{
|
||||
// Mark as deleted
|
||||
directoryEntry->Name[0] = FILE_HEADER_DELETED;
|
||||
|
||||
#if FATFS_INC_TIME_DATE_SUPPORT
|
||||
// Update access / modify time & date
|
||||
fatfs_update_timestamps(directoryEntry, 0, 1, 1);
|
||||
#endif
|
||||
|
||||
// Update sfn entry
|
||||
memcpy((uint8*)(fs->currentsector.sector+recordoffset), (uint8*)directoryEntry, sizeof(struct fat_dir_entry));
|
||||
|
||||
// Write sector back
|
||||
return fs->disk_io.write_media(fs->currentsector.address, fs->currentsector.sector, 1);
|
||||
}
|
||||
}
|
||||
} // End of if
|
||||
}
|
||||
else
|
||||
break;
|
||||
} // End of while loop
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_list_directory_start: Initialise a directory listing procedure
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_DIR_LIST_SUPPORT
|
||||
void fatfs_list_directory_start(struct fatfs *fs, struct fs_dir_list_status *dirls, uint32 StartCluster)
|
||||
{
|
||||
dirls->cluster = StartCluster;
|
||||
dirls->sector = 0;
|
||||
dirls->offset = 0;
|
||||
}
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_list_directory_next: Get the next entry in the directory.
|
||||
// Returns: 1 = found, 0 = end of listing
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_DIR_LIST_SUPPORT
|
||||
int fatfs_list_directory_next(struct fatfs *fs, struct fs_dir_list_status *dirls, struct fs_dir_ent *entry)
|
||||
{
|
||||
uint8 i,item;
|
||||
uint16 recordoffset;
|
||||
struct fat_dir_entry *directoryEntry;
|
||||
char *long_filename = NULL;
|
||||
char short_filename[13];
|
||||
struct lfn_cache lfn;
|
||||
int dotRequired = 0;
|
||||
int result = 0;
|
||||
|
||||
// Initialise LFN cache first
|
||||
fatfs_lfn_cache_init(&lfn, 0);
|
||||
|
||||
while (1)
|
||||
{
|
||||
// If data read OK
|
||||
if (fatfs_sector_reader(fs, dirls->cluster, dirls->sector, 0))
|
||||
{
|
||||
// Maximum of 16 directory entries
|
||||
for (item = dirls->offset; item < FAT_DIR_ENTRIES_PER_SECTOR; item++)
|
||||
{
|
||||
// Increase directory offset
|
||||
recordoffset = FAT_DIR_ENTRY_SIZE * item;
|
||||
|
||||
// Overlay directory entry over buffer
|
||||
directoryEntry = (struct fat_dir_entry*)(fs->currentsector.sector+recordoffset);
|
||||
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
// Long File Name Text Found
|
||||
if ( fatfs_entry_lfn_text(directoryEntry) )
|
||||
fatfs_lfn_cache_entry(&lfn, fs->currentsector.sector+recordoffset);
|
||||
|
||||
// If Invalid record found delete any long file name information collated
|
||||
else if ( fatfs_entry_lfn_invalid(directoryEntry) )
|
||||
fatfs_lfn_cache_init(&lfn, 0);
|
||||
|
||||
// Normal SFN Entry and Long text exists
|
||||
else if (fatfs_entry_lfn_exists(&lfn, directoryEntry) )
|
||||
{
|
||||
// Get text
|
||||
long_filename = fatfs_lfn_cache_get(&lfn);
|
||||
strncpy(entry->filename, long_filename, FATFS_MAX_LONG_FILENAME-1);
|
||||
|
||||
if (fatfs_entry_is_dir(directoryEntry))
|
||||
entry->is_dir = 1;
|
||||
else
|
||||
entry->is_dir = 0;
|
||||
|
||||
#if FATFS_INC_TIME_DATE_SUPPORT
|
||||
// Get time / dates
|
||||
entry->create_time = ((uint16)directoryEntry->CrtTime[1] << 8) | directoryEntry->CrtTime[0];
|
||||
entry->create_date = ((uint16)directoryEntry->CrtDate[1] << 8) | directoryEntry->CrtDate[0];
|
||||
entry->access_date = ((uint16)directoryEntry->LstAccDate[1] << 8) | directoryEntry->LstAccDate[0];
|
||||
entry->write_time = ((uint16)directoryEntry->WrtTime[1] << 8) | directoryEntry->WrtTime[0];
|
||||
entry->write_date = ((uint16)directoryEntry->WrtDate[1] << 8) | directoryEntry->WrtDate[0];
|
||||
#endif
|
||||
|
||||
entry->size = FAT_HTONL(directoryEntry->FileSize);
|
||||
entry->cluster = (FAT_HTONS(directoryEntry->FstClusHI)<<16) | FAT_HTONS(directoryEntry->FstClusLO);
|
||||
|
||||
// Next starting position
|
||||
dirls->offset = item + 1;
|
||||
result = 1;
|
||||
return 1;
|
||||
}
|
||||
// Normal Entry, only 8.3 Text
|
||||
else
|
||||
#endif
|
||||
if ( fatfs_entry_sfn_only(directoryEntry) )
|
||||
{
|
||||
fatfs_lfn_cache_init(&lfn, 0);
|
||||
|
||||
memset(short_filename, 0, sizeof(short_filename));
|
||||
|
||||
// Copy name to string
|
||||
for (i=0; i<8; i++)
|
||||
short_filename[i] = directoryEntry->Name[i];
|
||||
|
||||
// Extension
|
||||
dotRequired = 0;
|
||||
for (i=8; i<11; i++)
|
||||
{
|
||||
short_filename[i+1] = directoryEntry->Name[i];
|
||||
if (directoryEntry->Name[i] != ' ')
|
||||
dotRequired = 1;
|
||||
}
|
||||
|
||||
// Dot only required if extension present
|
||||
if (dotRequired)
|
||||
{
|
||||
// If not . or .. entry
|
||||
if (short_filename[0]!='.')
|
||||
short_filename[8] = '.';
|
||||
else
|
||||
short_filename[8] = ' ';
|
||||
}
|
||||
else
|
||||
short_filename[8] = ' ';
|
||||
|
||||
fatfs_get_sfn_display_name(entry->filename, short_filename);
|
||||
|
||||
if (fatfs_entry_is_dir(directoryEntry))
|
||||
entry->is_dir = 1;
|
||||
else
|
||||
entry->is_dir = 0;
|
||||
|
||||
#if FATFS_INC_TIME_DATE_SUPPORT
|
||||
// Get time / dates
|
||||
entry->create_time = ((uint16)directoryEntry->CrtTime[1] << 8) | directoryEntry->CrtTime[0];
|
||||
entry->create_date = ((uint16)directoryEntry->CrtDate[1] << 8) | directoryEntry->CrtDate[0];
|
||||
entry->access_date = ((uint16)directoryEntry->LstAccDate[1] << 8) | directoryEntry->LstAccDate[0];
|
||||
entry->write_time = ((uint16)directoryEntry->WrtTime[1] << 8) | directoryEntry->WrtTime[0];
|
||||
entry->write_date = ((uint16)directoryEntry->WrtDate[1] << 8) | directoryEntry->WrtDate[0];
|
||||
#endif
|
||||
|
||||
entry->size = FAT_HTONL(directoryEntry->FileSize);
|
||||
entry->cluster = (FAT_HTONS(directoryEntry->FstClusHI)<<16) | FAT_HTONS(directoryEntry->FstClusLO);
|
||||
|
||||
// Next starting position
|
||||
dirls->offset = item + 1;
|
||||
result = 1;
|
||||
return 1;
|
||||
}
|
||||
}// end of for
|
||||
|
||||
// If reached end of the dir move onto next sector
|
||||
dirls->sector++;
|
||||
dirls->offset = 0;
|
||||
}
|
||||
else
|
||||
break;
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
#endif
|
||||
133
ios_fs/source/fat/fat_access.h
Normal file
133
ios_fs/source/fat/fat_access.h
Normal file
@ -0,0 +1,133 @@
|
||||
#ifndef __FAT_ACCESS_H__
|
||||
#define __FAT_ACCESS_H__
|
||||
|
||||
#include "fat_defs.h"
|
||||
#include "fat_opts.h"
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Defines
|
||||
//-----------------------------------------------------------------------------
|
||||
#define FAT_INIT_OK 0
|
||||
#define FAT_INIT_MEDIA_ACCESS_ERROR (-1)
|
||||
#define FAT_INIT_INVALID_SECTOR_SIZE (-2)
|
||||
#define FAT_INIT_INVALID_SIGNATURE (-3)
|
||||
#define FAT_INIT_ENDIAN_ERROR (-4)
|
||||
#define FAT_INIT_WRONG_FILESYS_TYPE (-5)
|
||||
#define FAT_INIT_WRONG_PARTITION_TYPE (-6)
|
||||
#define FAT_INIT_STRUCT_PACKING (-7)
|
||||
|
||||
#define FAT_DIR_ENTRIES_PER_SECTOR (FAT_SECTOR_SIZE / FAT_DIR_ENTRY_SIZE)
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Function Pointers
|
||||
//-----------------------------------------------------------------------------
|
||||
typedef int (*fn_diskio_read) (uint32 sector, uint8 *buffer, uint32 sector_count);
|
||||
typedef int (*fn_diskio_write)(uint32 sector, uint8 *buffer, uint32 sector_count);
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Structures
|
||||
//-----------------------------------------------------------------------------
|
||||
struct disk_if
|
||||
{
|
||||
// User supplied function pointers for disk IO
|
||||
fn_diskio_read read_media;
|
||||
fn_diskio_write write_media;
|
||||
};
|
||||
|
||||
// Forward declaration
|
||||
struct fat_buffer;
|
||||
|
||||
struct fat_buffer
|
||||
{
|
||||
uint8 sector[FAT_SECTOR_SIZE * FAT_BUFFER_SECTORS];
|
||||
uint32 address;
|
||||
int dirty;
|
||||
uint8 * ptr;
|
||||
|
||||
// Next in chain of sector buffers
|
||||
struct fat_buffer *next;
|
||||
};
|
||||
|
||||
typedef enum eFatType
|
||||
{
|
||||
FAT_TYPE_16,
|
||||
FAT_TYPE_32
|
||||
} tFatType;
|
||||
|
||||
struct fatfs
|
||||
{
|
||||
// Filesystem globals
|
||||
uint8 sectors_per_cluster;
|
||||
uint32 cluster_begin_lba;
|
||||
uint32 rootdir_first_cluster;
|
||||
uint32 rootdir_first_sector;
|
||||
uint32 rootdir_sectors;
|
||||
uint32 fat_begin_lba;
|
||||
uint16 fs_info_sector;
|
||||
uint32 lba_begin;
|
||||
uint32 fat_sectors;
|
||||
uint32 next_free_cluster;
|
||||
uint16 root_entry_count;
|
||||
uint16 reserved_sectors;
|
||||
uint8 num_of_fats;
|
||||
tFatType fat_type;
|
||||
|
||||
// Disk/Media API
|
||||
struct disk_if disk_io;
|
||||
|
||||
// [Optional] Thread Safety
|
||||
void (*fl_lock)(void);
|
||||
void (*fl_unlock)(void);
|
||||
|
||||
// Working buffer
|
||||
struct fat_buffer currentsector;
|
||||
|
||||
// FAT Buffer
|
||||
struct fat_buffer *fat_buffer_head;
|
||||
struct fat_buffer fat_buffers[FAT_BUFFERS];
|
||||
};
|
||||
|
||||
struct fs_dir_list_status
|
||||
{
|
||||
uint32 sector;
|
||||
uint32 cluster;
|
||||
uint8 offset;
|
||||
};
|
||||
|
||||
struct fs_dir_ent
|
||||
{
|
||||
char filename[FATFS_MAX_LONG_FILENAME];
|
||||
uint8 is_dir;
|
||||
uint32 cluster;
|
||||
uint32 size;
|
||||
|
||||
#if FATFS_INC_TIME_DATE_SUPPORT
|
||||
uint16 access_date;
|
||||
uint16 write_time;
|
||||
uint16 write_date;
|
||||
uint16 create_date;
|
||||
uint16 create_time;
|
||||
#endif
|
||||
};
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Prototypes
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_init(struct fatfs *fs);
|
||||
uint32 fatfs_lba_of_cluster(struct fatfs *fs, uint32 Cluster_Number);
|
||||
int fatfs_sector_reader(struct fatfs *fs, uint32 Startcluster, uint32 offset, uint8 *target);
|
||||
int fatfs_sector_read(struct fatfs *fs, uint32 lba, uint8 *target, uint32 count);
|
||||
int fatfs_sector_write(struct fatfs *fs, uint32 lba, uint8 *target, uint32 count);
|
||||
int fatfs_read_sector(struct fatfs *fs, uint32 cluster, uint32 sector, uint8 *target);
|
||||
int fatfs_write_sector(struct fatfs *fs, uint32 cluster, uint32 sector, uint8 *target);
|
||||
void fatfs_show_details(struct fatfs *fs);
|
||||
uint32 fatfs_get_root_cluster(struct fatfs *fs);
|
||||
uint32 fatfs_get_file_entry(struct fatfs *fs, uint32 Cluster, char *nametofind, struct fat_dir_entry *sfEntry);
|
||||
int fatfs_sfn_exists(struct fatfs *fs, uint32 Cluster, char *shortname);
|
||||
int fatfs_update_file_length(struct fatfs *fs, uint32 Cluster, char *shortname, uint32 fileLength);
|
||||
int fatfs_mark_file_deleted(struct fatfs *fs, uint32 Cluster, char *shortname);
|
||||
void fatfs_list_directory_start(struct fatfs *fs, struct fs_dir_list_status *dirls, uint32 StartCluster);
|
||||
int fatfs_list_directory_next(struct fatfs *fs, struct fs_dir_list_status *dirls, struct fs_dir_ent *entry);
|
||||
int fatfs_update_timestamps(struct fat_dir_entry *directoryEntry, int create, int modify, int access);
|
||||
|
||||
#endif
|
||||
91
ios_fs/source/fat/fat_cache.c
Normal file
91
ios_fs/source/fat/fat_cache.c
Normal file
@ -0,0 +1,91 @@
|
||||
//-----------------------------------------------------------------------------
|
||||
//-----------------------------------------------------------------------------
|
||||
// FAT16/32 File IO Library
|
||||
// V2.6
|
||||
// Ultra-Embedded.com
|
||||
// Copyright 2003 - 2012
|
||||
//
|
||||
// Email: admin@ultra-embedded.com
|
||||
//
|
||||
// License: GPL
|
||||
// If you would like a version with a more permissive license for use in
|
||||
// closed source commercial applications please contact me for details.
|
||||
//-----------------------------------------------------------------------------
|
||||
//
|
||||
// This file is part of FAT File IO Library.
|
||||
//
|
||||
// FAT File IO Library is free software; you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation; either version 2 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// FAT File IO Library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with FAT File IO Library; if not, write to the Free Software
|
||||
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
//-----------------------------------------------------------------------------
|
||||
//-----------------------------------------------------------------------------
|
||||
#include "../imports.h"
|
||||
#include "fat_cache.h"
|
||||
|
||||
// Per file cluster chain caching used to improve performance.
|
||||
// This does not have to be enabled for architectures with low
|
||||
// memory space.
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_cache_init:
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_cache_init(struct fatfs *fs, FL_FILE *file)
|
||||
{
|
||||
#ifdef FAT_CLUSTER_CACHE_ENTRIES
|
||||
int i;
|
||||
|
||||
for (i=0;i<FAT_CLUSTER_CACHE_ENTRIES;i++)
|
||||
{
|
||||
file->cluster_cache_idx[i] = 0xFFFFFFFF; // Not used
|
||||
file->cluster_cache_data[i] = 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
return 1;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_cache_get_next_cluster:
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_cache_get_next_cluster(struct fatfs *fs, FL_FILE *file, uint32 clusterIdx, uint32 *pNextCluster)
|
||||
{
|
||||
#ifdef FAT_CLUSTER_CACHE_ENTRIES
|
||||
uint32 slot = clusterIdx % FAT_CLUSTER_CACHE_ENTRIES;
|
||||
|
||||
if (file->cluster_cache_idx[slot] == clusterIdx)
|
||||
{
|
||||
*pNextCluster = file->cluster_cache_data[slot];
|
||||
return 1;
|
||||
}
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_cache_set_next_cluster:
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_cache_set_next_cluster(struct fatfs *fs, FL_FILE *file, uint32 clusterIdx, uint32 nextCluster)
|
||||
{
|
||||
#ifdef FAT_CLUSTER_CACHE_ENTRIES
|
||||
uint32 slot = clusterIdx % FAT_CLUSTER_CACHE_ENTRIES;
|
||||
|
||||
if (file->cluster_cache_idx[slot] == clusterIdx)
|
||||
file->cluster_cache_data[slot] = nextCluster;
|
||||
else
|
||||
{
|
||||
file->cluster_cache_idx[slot] = clusterIdx;
|
||||
file->cluster_cache_data[slot] = nextCluster;
|
||||
}
|
||||
#endif
|
||||
|
||||
return 1;
|
||||
}
|
||||
13
ios_fs/source/fat/fat_cache.h
Normal file
13
ios_fs/source/fat/fat_cache.h
Normal file
@ -0,0 +1,13 @@
|
||||
#ifndef __FAT_CACHE_H__
|
||||
#define __FAT_CACHE_H__
|
||||
|
||||
#include "fat_filelib.h"
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Prototypes
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_cache_init(struct fatfs *fs, FL_FILE *file);
|
||||
int fatfs_cache_get_next_cluster(struct fatfs *fs, FL_FILE *file, uint32 clusterIdx, uint32 *pNextCluster);
|
||||
int fatfs_cache_set_next_cluster(struct fatfs *fs, FL_FILE *file, uint32 clusterIdx, uint32 nextCluster);
|
||||
|
||||
#endif
|
||||
128
ios_fs/source/fat/fat_defs.h
Normal file
128
ios_fs/source/fat/fat_defs.h
Normal file
@ -0,0 +1,128 @@
|
||||
#ifndef __FAT_DEFS_H__
|
||||
#define __FAT_DEFS_H__
|
||||
|
||||
#include "fat_opts.h"
|
||||
#include "fat_types.h"
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// FAT32 Offsets
|
||||
// Name Offset
|
||||
//-----------------------------------------------------------------------------
|
||||
|
||||
// Boot Sector
|
||||
#define BS_JMPBOOT 0 // Length = 3
|
||||
#define BS_OEMNAME 3 // Length = 8
|
||||
#define BPB_BYTSPERSEC 11 // Length = 2
|
||||
#define BPB_SECPERCLUS 13 // Length = 1
|
||||
#define BPB_RSVDSECCNT 14 // Length = 2
|
||||
#define BPB_NUMFATS 16 // Length = 1
|
||||
#define BPB_ROOTENTCNT 17 // Length = 2
|
||||
#define BPB_TOTSEC16 19 // Length = 2
|
||||
#define BPB_MEDIA 21 // Length = 1
|
||||
#define BPB_FATSZ16 22 // Length = 2
|
||||
#define BPB_SECPERTRK 24 // Length = 2
|
||||
#define BPB_NUMHEADS 26 // Length = 2
|
||||
#define BPB_HIDDSEC 28 // Length = 4
|
||||
#define BPB_TOTSEC32 32 // Length = 4
|
||||
|
||||
// FAT 12/16
|
||||
#define BS_FAT_DRVNUM 36 // Length = 1
|
||||
#define BS_FAT_BOOTSIG 38 // Length = 1
|
||||
#define BS_FAT_VOLID 39 // Length = 4
|
||||
#define BS_FAT_VOLLAB 43 // Length = 11
|
||||
#define BS_FAT_FILSYSTYPE 54 // Length = 8
|
||||
|
||||
// FAT 32
|
||||
#define BPB_FAT32_FATSZ32 36 // Length = 4
|
||||
#define BPB_FAT32_EXTFLAGS 40 // Length = 2
|
||||
#define BPB_FAT32_FSVER 42 // Length = 2
|
||||
#define BPB_FAT32_ROOTCLUS 44 // Length = 4
|
||||
#define BPB_FAT32_FSINFO 48 // Length = 2
|
||||
#define BPB_FAT32_BKBOOTSEC 50 // Length = 2
|
||||
#define BS_FAT32_DRVNUM 64 // Length = 1
|
||||
#define BS_FAT32_BOOTSIG 66 // Length = 1
|
||||
#define BS_FAT32_VOLID 67 // Length = 4
|
||||
#define BS_FAT32_VOLLAB 71 // Length = 11
|
||||
#define BS_FAT32_FILSYSTYPE 82 // Length = 8
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// FAT Types
|
||||
//-----------------------------------------------------------------------------
|
||||
#define FAT_TYPE_FAT12 1
|
||||
#define FAT_TYPE_FAT16 2
|
||||
#define FAT_TYPE_FAT32 3
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// FAT32 Specific Statics
|
||||
//-----------------------------------------------------------------------------
|
||||
#define SIGNATURE_POSITION 510
|
||||
#define SIGNATURE_VALUE 0xAA55
|
||||
#define PARTITION1_TYPECODE_LOCATION 450
|
||||
#define FAT32_TYPECODE1 0x0B
|
||||
#define FAT32_TYPECODE2 0x0C
|
||||
#define PARTITION1_LBA_BEGIN_LOCATION 454
|
||||
#define PARTITION1_SIZE_LOCATION 458
|
||||
|
||||
#define FAT_DIR_ENTRY_SIZE 32
|
||||
#define FAT_SFN_SIZE_FULL 11
|
||||
#define FAT_SFN_SIZE_PARTIAL 8
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// FAT32 File Attributes and Types
|
||||
//-----------------------------------------------------------------------------
|
||||
#define FILE_ATTR_READ_ONLY 0x01
|
||||
#define FILE_ATTR_HIDDEN 0x02
|
||||
#define FILE_ATTR_SYSTEM 0x04
|
||||
#define FILE_ATTR_SYSHID 0x06
|
||||
#define FILE_ATTR_VOLUME_ID 0x08
|
||||
#define FILE_ATTR_DIRECTORY 0x10
|
||||
#define FILE_ATTR_ARCHIVE 0x20
|
||||
#define FILE_ATTR_LFN_TEXT 0x0F
|
||||
#define FILE_HEADER_BLANK 0x00
|
||||
#define FILE_HEADER_DELETED 0xE5
|
||||
#define FILE_TYPE_DIR 0x10
|
||||
#define FILE_TYPE_FILE 0x20
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Time / Date details
|
||||
//-----------------------------------------------------------------------------
|
||||
#define FAT_TIME_HOURS_SHIFT 11
|
||||
#define FAT_TIME_HOURS_MASK 0x1F
|
||||
#define FAT_TIME_MINUTES_SHIFT 5
|
||||
#define FAT_TIME_MINUTES_MASK 0x3F
|
||||
#define FAT_TIME_SECONDS_SHIFT 0
|
||||
#define FAT_TIME_SECONDS_MASK 0x1F
|
||||
#define FAT_TIME_SECONDS_SCALE 2
|
||||
#define FAT_DATE_YEAR_SHIFT 9
|
||||
#define FAT_DATE_YEAR_MASK 0x7F
|
||||
#define FAT_DATE_MONTH_SHIFT 5
|
||||
#define FAT_DATE_MONTH_MASK 0xF
|
||||
#define FAT_DATE_DAY_SHIFT 0
|
||||
#define FAT_DATE_DAY_MASK 0x1F
|
||||
#define FAT_DATE_YEAR_OFFSET 1980
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Other Defines
|
||||
//-----------------------------------------------------------------------------
|
||||
#define FAT32_LAST_CLUSTER 0xFFFFFFFF
|
||||
#define FAT32_INVALID_CLUSTER 0xFFFFFFFF
|
||||
|
||||
STRUCT_PACK_BEGIN
|
||||
struct fat_dir_entry STRUCT_PACK
|
||||
{
|
||||
uint8 Name[11];
|
||||
uint8 Attr;
|
||||
uint8 NTRes;
|
||||
uint8 CrtTimeTenth;
|
||||
uint8 CrtTime[2];
|
||||
uint8 CrtDate[2];
|
||||
uint8 LstAccDate[2];
|
||||
uint16 FstClusHI;
|
||||
uint8 WrtTime[2];
|
||||
uint8 WrtDate[2];
|
||||
uint16 FstClusLO;
|
||||
uint32 FileSize;
|
||||
} STRUCT_PACKED;
|
||||
STRUCT_PACK_END
|
||||
|
||||
#endif
|
||||
1608
ios_fs/source/fat/fat_filelib.c
Normal file
1608
ios_fs/source/fat/fat_filelib.c
Normal file
File diff suppressed because it is too large
Load Diff
146
ios_fs/source/fat/fat_filelib.h
Normal file
146
ios_fs/source/fat/fat_filelib.h
Normal file
@ -0,0 +1,146 @@
|
||||
#ifndef __FAT_FILELIB_H__
|
||||
#define __FAT_FILELIB_H__
|
||||
|
||||
#include "fat_opts.h"
|
||||
#include "fat_access.h"
|
||||
#include "fat_list.h"
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Defines
|
||||
//-----------------------------------------------------------------------------
|
||||
#ifndef SEEK_CUR
|
||||
#define SEEK_CUR 1
|
||||
#endif
|
||||
|
||||
#ifndef SEEK_END
|
||||
#define SEEK_END 2
|
||||
#endif
|
||||
|
||||
#ifndef SEEK_SET
|
||||
#define SEEK_SET 0
|
||||
#endif
|
||||
|
||||
#ifndef EOF
|
||||
#define EOF (-1)
|
||||
#endif
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Structures
|
||||
//-----------------------------------------------------------------------------
|
||||
struct sFL_FILE;
|
||||
|
||||
struct cluster_lookup
|
||||
{
|
||||
uint32 ClusterIdx;
|
||||
uint32 CurrentCluster;
|
||||
};
|
||||
|
||||
typedef struct sFL_FILE
|
||||
{
|
||||
uint32 parentcluster;
|
||||
uint32 startcluster;
|
||||
uint32 bytenum;
|
||||
uint32 filelength;
|
||||
int filelength_changed;
|
||||
char path[FATFS_MAX_LONG_FILENAME];
|
||||
char filename[FATFS_MAX_LONG_FILENAME];
|
||||
uint8 shortfilename[11];
|
||||
|
||||
#ifdef FAT_CLUSTER_CACHE_ENTRIES
|
||||
uint32 cluster_cache_idx[FAT_CLUSTER_CACHE_ENTRIES];
|
||||
uint32 cluster_cache_data[FAT_CLUSTER_CACHE_ENTRIES];
|
||||
#endif
|
||||
|
||||
// Cluster Lookup
|
||||
struct cluster_lookup last_fat_lookup;
|
||||
|
||||
// Read/Write sector buffer
|
||||
uint8 file_data_sector[FAT_SECTOR_SIZE];
|
||||
uint32 file_data_address;
|
||||
int file_data_dirty;
|
||||
|
||||
// File fopen flags
|
||||
uint8 flags;
|
||||
#define FILE_READ (1 << 0)
|
||||
#define FILE_WRITE (1 << 1)
|
||||
#define FILE_APPEND (1 << 2)
|
||||
#define FILE_BINARY (1 << 3)
|
||||
#define FILE_ERASE (1 << 4)
|
||||
#define FILE_CREATE (1 << 5)
|
||||
|
||||
struct fat_node list_node;
|
||||
} FL_FILE;
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Prototypes
|
||||
//-----------------------------------------------------------------------------
|
||||
|
||||
// External
|
||||
void fl_init(void);
|
||||
void fl_attach_locks(void (*lock)(void), void (*unlock)(void));
|
||||
int fl_attach_media(fn_diskio_read rd, fn_diskio_write wr);
|
||||
void fl_shutdown(void);
|
||||
|
||||
// Standard API
|
||||
void* fl_fopen(const char *path, const char *modifiers);
|
||||
void fl_fclose(void *file);
|
||||
int fl_fflush(void *file);
|
||||
int fl_fgetc(void *file);
|
||||
char * fl_fgets(char *s, int n, void *f);
|
||||
int fl_fputc(int c, void *file);
|
||||
int fl_fputs(const char * str, void *file);
|
||||
int fl_fwrite(const void * data, int size, int count, void *file );
|
||||
int fl_fread(void * data, int size, int count, void *file );
|
||||
int fl_fseek(void *file , long offset , int origin );
|
||||
int fl_fgetpos(void *file , uint32 * position);
|
||||
long fl_ftell(void *f);
|
||||
int fl_feof(void *f);
|
||||
int fl_remove(const char * filename);
|
||||
|
||||
// Equivelant dirent.h
|
||||
typedef struct fs_dir_list_status FL_DIR;
|
||||
typedef struct fs_dir_ent fl_dirent;
|
||||
|
||||
FL_DIR* fl_opendir(const char* path, FL_DIR *dir);
|
||||
int fl_readdir(FL_DIR *dirls, fl_dirent *entry);
|
||||
int fl_closedir(FL_DIR* dir);
|
||||
|
||||
// Extensions
|
||||
void fl_listdirectory(const char *path);
|
||||
int fl_createdirectory(const char *path);
|
||||
int fl_is_dir(const char *path);
|
||||
|
||||
int fl_format(uint32 volume_sectors, const char *name);
|
||||
|
||||
// Test hooks
|
||||
#ifdef FATFS_INC_TEST_HOOKS
|
||||
struct fatfs* fl_get_fs(void);
|
||||
#endif
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Stdio file I/O names
|
||||
//-----------------------------------------------------------------------------
|
||||
#ifdef USE_FILELIB_STDIO_COMPAT_NAMES
|
||||
|
||||
#define FILE FL_FILE
|
||||
|
||||
#define fopen(a,b) fl_fopen(a, b)
|
||||
#define fclose(a) fl_fclose(a)
|
||||
#define fflush(a) fl_fflush(a)
|
||||
#define fgetc(a) fl_fgetc(a)
|
||||
#define fgets(a,b,c) fl_fgets(a, b, c)
|
||||
#define fputc(a,b) fl_fputc(a, b)
|
||||
#define fputs(a,b) fl_fputs(a, b)
|
||||
#define fwrite(a,b,c,d) fl_fwrite(a, b, c, d)
|
||||
#define fread(a,b,c,d) fl_fread(a, b, c, d)
|
||||
#define fseek(a,b,c) fl_fseek(a, b, c)
|
||||
#define fgetpos(a,b) fl_fgetpos(a, b)
|
||||
#define ftell(a) fl_ftell(a)
|
||||
#define feof(a) fl_feof(a)
|
||||
#define remove(a) fl_remove(a)
|
||||
#define mkdir(a) fl_createdirectory(a)
|
||||
#define rmdir(a) 0
|
||||
|
||||
#endif
|
||||
|
||||
#endif
|
||||
532
ios_fs/source/fat/fat_format.c
Normal file
532
ios_fs/source/fat/fat_format.c
Normal file
@ -0,0 +1,532 @@
|
||||
//-----------------------------------------------------------------------------
|
||||
//-----------------------------------------------------------------------------
|
||||
// FAT16/32 File IO Library
|
||||
// V2.6
|
||||
// Ultra-Embedded.com
|
||||
// Copyright 2003 - 2012
|
||||
//
|
||||
// Email: admin@ultra-embedded.com
|
||||
//
|
||||
// License: GPL
|
||||
// If you would like a version with a more permissive license for use in
|
||||
// closed source commercial applications please contact me for details.
|
||||
//-----------------------------------------------------------------------------
|
||||
//
|
||||
// This file is part of FAT File IO Library.
|
||||
//
|
||||
// FAT File IO Library is free software; you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation; either version 2 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// FAT File IO Library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with FAT File IO Library; if not, write to the Free Software
|
||||
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
//-----------------------------------------------------------------------------
|
||||
//-----------------------------------------------------------------------------
|
||||
#include "../imports.h"
|
||||
#include "fat_defs.h"
|
||||
#include "fat_access.h"
|
||||
#include "fat_table.h"
|
||||
#include "fat_write.h"
|
||||
#include "fat_string.h"
|
||||
#include "fat_misc.h"
|
||||
#include "fat_format.h"
|
||||
|
||||
#if FATFS_INC_FORMAT_SUPPORT
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Tables
|
||||
//-----------------------------------------------------------------------------
|
||||
struct sec_per_clus_table
|
||||
{
|
||||
uint32 sectors;
|
||||
uint8 sectors_per_cluster;
|
||||
};
|
||||
|
||||
struct sec_per_clus_table _cluster_size_table16[] =
|
||||
{
|
||||
{ 32680, 2}, // 16MB - 1K
|
||||
{ 262144, 4}, // 128MB - 2K
|
||||
{ 524288, 8}, // 256MB - 4K
|
||||
{ 1048576, 16}, // 512MB - 8K
|
||||
{ 2097152, 32}, // 1GB - 16K
|
||||
{ 4194304, 64}, // 2GB - 32K
|
||||
{ 8388608, 128},// 2GB - 64K [Warning only supported by Windows XP onwards]
|
||||
{ 0 , 0 } // Invalid
|
||||
};
|
||||
|
||||
struct sec_per_clus_table _cluster_size_table32[] =
|
||||
{
|
||||
{ 532480, 1}, // 260MB - 512b
|
||||
{ 16777216, 8}, // 8GB - 4K
|
||||
{ 33554432, 16}, // 16GB - 8K
|
||||
{ 67108864, 32}, // 32GB - 16K
|
||||
{ 0xFFFFFFFF, 64},// >32GB - 32K
|
||||
{ 0 , 0 } // Invalid
|
||||
};
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_calc_cluster_size: Calculate what cluster size should be used
|
||||
//-----------------------------------------------------------------------------
|
||||
static uint8 fatfs_calc_cluster_size(uint32 sectors, int is_fat32)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (!is_fat32)
|
||||
{
|
||||
for (i=0; _cluster_size_table16[i].sectors_per_cluster != 0;i++)
|
||||
if (sectors <= _cluster_size_table16[i].sectors)
|
||||
return _cluster_size_table16[i].sectors_per_cluster;
|
||||
}
|
||||
else
|
||||
{
|
||||
for (i=0; _cluster_size_table32[i].sectors_per_cluster != 0;i++)
|
||||
if (sectors <= _cluster_size_table32[i].sectors)
|
||||
return _cluster_size_table32[i].sectors_per_cluster;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_erase_sectors: Erase a number of sectors
|
||||
//-----------------------------------------------------------------------------
|
||||
static int fatfs_erase_sectors(struct fatfs *fs, uint32 lba, int count)
|
||||
{
|
||||
int i;
|
||||
|
||||
// Zero sector first
|
||||
memset(fs->currentsector.sector, 0, FAT_SECTOR_SIZE);
|
||||
|
||||
for (i=0;i<count;i++)
|
||||
if (!fs->disk_io.write_media(lba + i, fs->currentsector.sector, 1))
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_create_boot_sector: Create the boot sector
|
||||
//-----------------------------------------------------------------------------
|
||||
static int fatfs_create_boot_sector(struct fatfs *fs, uint32 boot_sector_lba, uint32 vol_sectors, const char *name, int is_fat32)
|
||||
{
|
||||
uint32 total_clusters;
|
||||
int i;
|
||||
|
||||
// Zero sector initially
|
||||
memset(fs->currentsector.sector, 0, FAT_SECTOR_SIZE);
|
||||
|
||||
// OEM Name & Jump Code
|
||||
fs->currentsector.sector[0] = 0xEB;
|
||||
fs->currentsector.sector[1] = 0x3C;
|
||||
fs->currentsector.sector[2] = 0x90;
|
||||
fs->currentsector.sector[3] = 0x4D;
|
||||
fs->currentsector.sector[4] = 0x53;
|
||||
fs->currentsector.sector[5] = 0x44;
|
||||
fs->currentsector.sector[6] = 0x4F;
|
||||
fs->currentsector.sector[7] = 0x53;
|
||||
fs->currentsector.sector[8] = 0x35;
|
||||
fs->currentsector.sector[9] = 0x2E;
|
||||
fs->currentsector.sector[10] = 0x30;
|
||||
|
||||
// Bytes per sector
|
||||
fs->currentsector.sector[11] = (FAT_SECTOR_SIZE >> 0) & 0xFF;
|
||||
fs->currentsector.sector[12] = (FAT_SECTOR_SIZE >> 8) & 0xFF;
|
||||
|
||||
// Get sectors per cluster size for the disk
|
||||
fs->sectors_per_cluster = fatfs_calc_cluster_size(vol_sectors, is_fat32);
|
||||
if (!fs->sectors_per_cluster)
|
||||
return 0; // Invalid disk size
|
||||
|
||||
// Sectors per cluster
|
||||
fs->currentsector.sector[13] = fs->sectors_per_cluster;
|
||||
|
||||
// Reserved Sectors
|
||||
if (!is_fat32)
|
||||
fs->reserved_sectors = 8;
|
||||
else
|
||||
fs->reserved_sectors = 32;
|
||||
fs->currentsector.sector[14] = (fs->reserved_sectors >> 0) & 0xFF;
|
||||
fs->currentsector.sector[15] = (fs->reserved_sectors >> 8) & 0xFF;
|
||||
|
||||
// Number of FATS
|
||||
fs->num_of_fats = 2;
|
||||
fs->currentsector.sector[16] = fs->num_of_fats;
|
||||
|
||||
// Max entries in root dir (FAT16 only)
|
||||
if (!is_fat32)
|
||||
{
|
||||
fs->root_entry_count = 512;
|
||||
fs->currentsector.sector[17] = (fs->root_entry_count >> 0) & 0xFF;
|
||||
fs->currentsector.sector[18] = (fs->root_entry_count >> 8) & 0xFF;
|
||||
}
|
||||
else
|
||||
{
|
||||
fs->root_entry_count = 0;
|
||||
fs->currentsector.sector[17] = 0;
|
||||
fs->currentsector.sector[18] = 0;
|
||||
}
|
||||
|
||||
// [FAT16] Total sectors (use FAT32 count instead)
|
||||
fs->currentsector.sector[19] = 0x00;
|
||||
fs->currentsector.sector[20] = 0x00;
|
||||
|
||||
// Media type
|
||||
fs->currentsector.sector[21] = 0xF8;
|
||||
|
||||
|
||||
// FAT16 BS Details
|
||||
if (!is_fat32)
|
||||
{
|
||||
// Count of sectors used by the FAT table (FAT16 only)
|
||||
total_clusters = (vol_sectors / fs->sectors_per_cluster) + 1;
|
||||
fs->fat_sectors = (total_clusters/(FAT_SECTOR_SIZE/2)) + 1;
|
||||
fs->currentsector.sector[22] = (uint8)((fs->fat_sectors >> 0) & 0xFF);
|
||||
fs->currentsector.sector[23] = (uint8)((fs->fat_sectors >> 8) & 0xFF);
|
||||
|
||||
// Sectors per track
|
||||
fs->currentsector.sector[24] = 0x00;
|
||||
fs->currentsector.sector[25] = 0x00;
|
||||
|
||||
// Heads
|
||||
fs->currentsector.sector[26] = 0x00;
|
||||
fs->currentsector.sector[27] = 0x00;
|
||||
|
||||
// Hidden sectors
|
||||
fs->currentsector.sector[28] = 0x20;
|
||||
fs->currentsector.sector[29] = 0x00;
|
||||
fs->currentsector.sector[30] = 0x00;
|
||||
fs->currentsector.sector[31] = 0x00;
|
||||
|
||||
// Total sectors for this volume
|
||||
fs->currentsector.sector[32] = (uint8)((vol_sectors>>0)&0xFF);
|
||||
fs->currentsector.sector[33] = (uint8)((vol_sectors>>8)&0xFF);
|
||||
fs->currentsector.sector[34] = (uint8)((vol_sectors>>16)&0xFF);
|
||||
fs->currentsector.sector[35] = (uint8)((vol_sectors>>24)&0xFF);
|
||||
|
||||
// Drive number
|
||||
fs->currentsector.sector[36] = 0x00;
|
||||
|
||||
// Reserved
|
||||
fs->currentsector.sector[37] = 0x00;
|
||||
|
||||
// Boot signature
|
||||
fs->currentsector.sector[38] = 0x29;
|
||||
|
||||
// Volume ID
|
||||
fs->currentsector.sector[39] = 0x12;
|
||||
fs->currentsector.sector[40] = 0x34;
|
||||
fs->currentsector.sector[41] = 0x56;
|
||||
fs->currentsector.sector[42] = 0x78;
|
||||
|
||||
// Volume name
|
||||
for (i=0;i<11;i++)
|
||||
{
|
||||
if (i < (int)strlen(name))
|
||||
fs->currentsector.sector[i+43] = name[i];
|
||||
else
|
||||
fs->currentsector.sector[i+43] = ' ';
|
||||
}
|
||||
|
||||
// File sys type
|
||||
fs->currentsector.sector[54] = 'F';
|
||||
fs->currentsector.sector[55] = 'A';
|
||||
fs->currentsector.sector[56] = 'T';
|
||||
fs->currentsector.sector[57] = '1';
|
||||
fs->currentsector.sector[58] = '6';
|
||||
fs->currentsector.sector[59] = ' ';
|
||||
fs->currentsector.sector[60] = ' ';
|
||||
fs->currentsector.sector[61] = ' ';
|
||||
|
||||
// Signature
|
||||
fs->currentsector.sector[510] = 0x55;
|
||||
fs->currentsector.sector[511] = 0xAA;
|
||||
}
|
||||
// FAT32 BS Details
|
||||
else
|
||||
{
|
||||
// Count of sectors used by the FAT table (FAT16 only)
|
||||
fs->currentsector.sector[22] = 0;
|
||||
fs->currentsector.sector[23] = 0;
|
||||
|
||||
// Sectors per track (default)
|
||||
fs->currentsector.sector[24] = 0x3F;
|
||||
fs->currentsector.sector[25] = 0x00;
|
||||
|
||||
// Heads (default)
|
||||
fs->currentsector.sector[26] = 0xFF;
|
||||
fs->currentsector.sector[27] = 0x00;
|
||||
|
||||
// Hidden sectors
|
||||
fs->currentsector.sector[28] = 0x00;
|
||||
fs->currentsector.sector[29] = 0x00;
|
||||
fs->currentsector.sector[30] = 0x00;
|
||||
fs->currentsector.sector[31] = 0x00;
|
||||
|
||||
// Total sectors for this volume
|
||||
fs->currentsector.sector[32] = (uint8)((vol_sectors>>0)&0xFF);
|
||||
fs->currentsector.sector[33] = (uint8)((vol_sectors>>8)&0xFF);
|
||||
fs->currentsector.sector[34] = (uint8)((vol_sectors>>16)&0xFF);
|
||||
fs->currentsector.sector[35] = (uint8)((vol_sectors>>24)&0xFF);
|
||||
|
||||
total_clusters = (vol_sectors / fs->sectors_per_cluster) + 1;
|
||||
fs->fat_sectors = (total_clusters/(FAT_SECTOR_SIZE/4)) + 1;
|
||||
|
||||
// BPB_FATSz32
|
||||
fs->currentsector.sector[36] = (uint8)((fs->fat_sectors>>0)&0xFF);
|
||||
fs->currentsector.sector[37] = (uint8)((fs->fat_sectors>>8)&0xFF);
|
||||
fs->currentsector.sector[38] = (uint8)((fs->fat_sectors>>16)&0xFF);
|
||||
fs->currentsector.sector[39] = (uint8)((fs->fat_sectors>>24)&0xFF);
|
||||
|
||||
// BPB_ExtFlags
|
||||
fs->currentsector.sector[40] = 0;
|
||||
fs->currentsector.sector[41] = 0;
|
||||
|
||||
// BPB_FSVer
|
||||
fs->currentsector.sector[42] = 0;
|
||||
fs->currentsector.sector[43] = 0;
|
||||
|
||||
// BPB_RootClus
|
||||
fs->currentsector.sector[44] = (uint8)((fs->rootdir_first_cluster>>0)&0xFF);
|
||||
fs->currentsector.sector[45] = (uint8)((fs->rootdir_first_cluster>>8)&0xFF);
|
||||
fs->currentsector.sector[46] = (uint8)((fs->rootdir_first_cluster>>16)&0xFF);
|
||||
fs->currentsector.sector[47] = (uint8)((fs->rootdir_first_cluster>>24)&0xFF);
|
||||
|
||||
// BPB_FSInfo
|
||||
fs->currentsector.sector[48] = (uint8)((fs->fs_info_sector>>0)&0xFF);
|
||||
fs->currentsector.sector[49] = (uint8)((fs->fs_info_sector>>8)&0xFF);
|
||||
|
||||
// BPB_BkBootSec
|
||||
fs->currentsector.sector[50] = 6;
|
||||
fs->currentsector.sector[51] = 0;
|
||||
|
||||
// Drive number
|
||||
fs->currentsector.sector[64] = 0x00;
|
||||
|
||||
// Boot signature
|
||||
fs->currentsector.sector[66] = 0x29;
|
||||
|
||||
// Volume ID
|
||||
fs->currentsector.sector[67] = 0x12;
|
||||
fs->currentsector.sector[68] = 0x34;
|
||||
fs->currentsector.sector[69] = 0x56;
|
||||
fs->currentsector.sector[70] = 0x78;
|
||||
|
||||
// Volume name
|
||||
for (i=0;i<11;i++)
|
||||
{
|
||||
if (i < (int)strlen(name))
|
||||
fs->currentsector.sector[i+71] = name[i];
|
||||
else
|
||||
fs->currentsector.sector[i+71] = ' ';
|
||||
}
|
||||
|
||||
// File sys type
|
||||
fs->currentsector.sector[82] = 'F';
|
||||
fs->currentsector.sector[83] = 'A';
|
||||
fs->currentsector.sector[84] = 'T';
|
||||
fs->currentsector.sector[85] = '3';
|
||||
fs->currentsector.sector[86] = '2';
|
||||
fs->currentsector.sector[87] = ' ';
|
||||
fs->currentsector.sector[88] = ' ';
|
||||
fs->currentsector.sector[89] = ' ';
|
||||
|
||||
// Signature
|
||||
fs->currentsector.sector[510] = 0x55;
|
||||
fs->currentsector.sector[511] = 0xAA;
|
||||
}
|
||||
|
||||
if (fs->disk_io.write_media(boot_sector_lba, fs->currentsector.sector, 1))
|
||||
return 1;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_create_fsinfo_sector: Create the FSInfo sector (FAT32)
|
||||
//-----------------------------------------------------------------------------
|
||||
static int fatfs_create_fsinfo_sector(struct fatfs *fs, uint32 sector_lba)
|
||||
{
|
||||
// Zero sector initially
|
||||
memset(fs->currentsector.sector, 0, FAT_SECTOR_SIZE);
|
||||
|
||||
// FSI_LeadSig
|
||||
fs->currentsector.sector[0] = 0x52;
|
||||
fs->currentsector.sector[1] = 0x52;
|
||||
fs->currentsector.sector[2] = 0x61;
|
||||
fs->currentsector.sector[3] = 0x41;
|
||||
|
||||
// FSI_StrucSig
|
||||
fs->currentsector.sector[484] = 0x72;
|
||||
fs->currentsector.sector[485] = 0x72;
|
||||
fs->currentsector.sector[486] = 0x41;
|
||||
fs->currentsector.sector[487] = 0x61;
|
||||
|
||||
// FSI_Free_Count
|
||||
fs->currentsector.sector[488] = 0xFF;
|
||||
fs->currentsector.sector[489] = 0xFF;
|
||||
fs->currentsector.sector[490] = 0xFF;
|
||||
fs->currentsector.sector[491] = 0xFF;
|
||||
|
||||
// FSI_Nxt_Free
|
||||
fs->currentsector.sector[492] = 0xFF;
|
||||
fs->currentsector.sector[493] = 0xFF;
|
||||
fs->currentsector.sector[494] = 0xFF;
|
||||
fs->currentsector.sector[495] = 0xFF;
|
||||
|
||||
// Signature
|
||||
fs->currentsector.sector[510] = 0x55;
|
||||
fs->currentsector.sector[511] = 0xAA;
|
||||
|
||||
if (fs->disk_io.write_media(sector_lba, fs->currentsector.sector, 1))
|
||||
return 1;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_erase_fat: Erase FAT table using fs details in fs struct
|
||||
//-----------------------------------------------------------------------------
|
||||
static int fatfs_erase_fat(struct fatfs *fs, int is_fat32)
|
||||
{
|
||||
uint32 i;
|
||||
|
||||
// Zero sector initially
|
||||
memset(fs->currentsector.sector, 0, FAT_SECTOR_SIZE);
|
||||
|
||||
// Initialise default allocate / reserved clusters
|
||||
if (!is_fat32)
|
||||
{
|
||||
SET_16BIT_WORD(fs->currentsector.sector, 0, 0xFFF8);
|
||||
SET_16BIT_WORD(fs->currentsector.sector, 2, 0xFFFF);
|
||||
}
|
||||
else
|
||||
{
|
||||
SET_32BIT_WORD(fs->currentsector.sector, 0, 0x0FFFFFF8);
|
||||
SET_32BIT_WORD(fs->currentsector.sector, 4, 0xFFFFFFFF);
|
||||
SET_32BIT_WORD(fs->currentsector.sector, 8, 0x0FFFFFFF);
|
||||
}
|
||||
|
||||
if (!fs->disk_io.write_media(fs->fat_begin_lba + 0, fs->currentsector.sector, 1))
|
||||
return 0;
|
||||
|
||||
// Zero remaining FAT sectors
|
||||
memset(fs->currentsector.sector, 0, FAT_SECTOR_SIZE);
|
||||
for (i=1;i<fs->fat_sectors*fs->num_of_fats;i++)
|
||||
if (!fs->disk_io.write_media(fs->fat_begin_lba + i, fs->currentsector.sector, 1))
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_format_fat16: Format a FAT16 partition
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_format_fat16(struct fatfs *fs, uint32 volume_sectors, const char *name)
|
||||
{
|
||||
fs->currentsector.address = FAT32_INVALID_CLUSTER;
|
||||
fs->currentsector.dirty = 0;
|
||||
|
||||
fs->next_free_cluster = 0; // Invalid
|
||||
|
||||
fatfs_fat_init(fs);
|
||||
|
||||
// Make sure we have read + write functions
|
||||
if (!fs->disk_io.read_media || !fs->disk_io.write_media)
|
||||
return FAT_INIT_MEDIA_ACCESS_ERROR;
|
||||
|
||||
// Volume is FAT16
|
||||
fs->fat_type = FAT_TYPE_16;
|
||||
|
||||
// Not valid for FAT16
|
||||
fs->fs_info_sector = 0;
|
||||
fs->rootdir_first_cluster = 0;
|
||||
|
||||
// Sector 0: Boot sector
|
||||
// NOTE: We don't need an MBR, it is a waste of a good sector!
|
||||
fs->lba_begin = 0;
|
||||
if (!fatfs_create_boot_sector(fs, fs->lba_begin, volume_sectors, name, 0))
|
||||
return 0;
|
||||
|
||||
// For FAT16 (which this may be), rootdir_first_cluster is actuall rootdir_first_sector
|
||||
fs->rootdir_first_sector = fs->reserved_sectors + (fs->num_of_fats * fs->fat_sectors);
|
||||
fs->rootdir_sectors = ((fs->root_entry_count * 32) + (FAT_SECTOR_SIZE - 1)) / FAT_SECTOR_SIZE;
|
||||
|
||||
// First FAT LBA address
|
||||
fs->fat_begin_lba = fs->lba_begin + fs->reserved_sectors;
|
||||
|
||||
// The address of the first data cluster on this volume
|
||||
fs->cluster_begin_lba = fs->fat_begin_lba + (fs->num_of_fats * fs->fat_sectors);
|
||||
|
||||
// Initialise FAT sectors
|
||||
if (!fatfs_erase_fat(fs, 0))
|
||||
return 0;
|
||||
|
||||
// Erase Root directory
|
||||
if (!fatfs_erase_sectors(fs, fs->lba_begin + fs->rootdir_first_sector, fs->rootdir_sectors))
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_format_fat32: Format a FAT32 partition
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_format_fat32(struct fatfs *fs, uint32 volume_sectors, const char *name)
|
||||
{
|
||||
fs->currentsector.address = FAT32_INVALID_CLUSTER;
|
||||
fs->currentsector.dirty = 0;
|
||||
|
||||
fs->next_free_cluster = 0; // Invalid
|
||||
|
||||
fatfs_fat_init(fs);
|
||||
|
||||
// Make sure we have read + write functions
|
||||
if (!fs->disk_io.read_media || !fs->disk_io.write_media)
|
||||
return FAT_INIT_MEDIA_ACCESS_ERROR;
|
||||
|
||||
// Volume is FAT32
|
||||
fs->fat_type = FAT_TYPE_32;
|
||||
|
||||
// Basic defaults for normal FAT32 partitions
|
||||
fs->fs_info_sector = 1;
|
||||
fs->rootdir_first_cluster = 2;
|
||||
|
||||
// Sector 0: Boot sector
|
||||
// NOTE: We don't need an MBR, it is a waste of a good sector!
|
||||
fs->lba_begin = 0;
|
||||
if (!fatfs_create_boot_sector(fs, fs->lba_begin, volume_sectors, name, 1))
|
||||
return 0;
|
||||
|
||||
// First FAT LBA address
|
||||
fs->fat_begin_lba = fs->lba_begin + fs->reserved_sectors;
|
||||
|
||||
// The address of the first data cluster on this volume
|
||||
fs->cluster_begin_lba = fs->fat_begin_lba + (fs->num_of_fats * fs->fat_sectors);
|
||||
|
||||
// Initialise FSInfo sector
|
||||
if (!fatfs_create_fsinfo_sector(fs, fs->fs_info_sector))
|
||||
return 0;
|
||||
|
||||
// Initialise FAT sectors
|
||||
if (!fatfs_erase_fat(fs, 1))
|
||||
return 0;
|
||||
|
||||
// Erase Root directory
|
||||
if (!fatfs_erase_sectors(fs, fatfs_lba_of_cluster(fs, fs->rootdir_first_cluster), fs->sectors_per_cluster))
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_format: Format a partition with either FAT16 or FAT32 based on size
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_format(struct fatfs *fs, uint32 volume_sectors, const char *name)
|
||||
{
|
||||
// 2GB - 32K limit for safe behaviour for FAT16
|
||||
if (volume_sectors <= 4194304)
|
||||
return fatfs_format_fat16(fs, volume_sectors, name);
|
||||
else
|
||||
return fatfs_format_fat32(fs, volume_sectors, name);
|
||||
}
|
||||
#endif /*FATFS_INC_FORMAT_SUPPORT*/
|
||||
15
ios_fs/source/fat/fat_format.h
Normal file
15
ios_fs/source/fat/fat_format.h
Normal file
@ -0,0 +1,15 @@
|
||||
#ifndef __FAT_FORMAT_H__
|
||||
#define __FAT_FORMAT_H__
|
||||
|
||||
#include "fat_defs.h"
|
||||
#include "fat_opts.h"
|
||||
#include "fat_access.h"
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Prototypes
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_format(struct fatfs *fs, uint32 volume_sectors, const char *name);
|
||||
int fatfs_format_fat16(struct fatfs *fs, uint32 volume_sectors, const char *name);
|
||||
int fatfs_format_fat32(struct fatfs *fs, uint32 volume_sectors, const char *name);
|
||||
|
||||
#endif
|
||||
161
ios_fs/source/fat/fat_list.h
Normal file
161
ios_fs/source/fat/fat_list.h
Normal file
@ -0,0 +1,161 @@
|
||||
#ifndef __FAT_LIST_H__
|
||||
#define __FAT_LIST_H__
|
||||
|
||||
#ifndef FAT_ASSERT
|
||||
#define FAT_ASSERT(x)
|
||||
#endif
|
||||
|
||||
#ifndef FAT_INLINE
|
||||
#define FAT_INLINE
|
||||
#endif
|
||||
|
||||
//-----------------------------------------------------------------
|
||||
// Types
|
||||
//-----------------------------------------------------------------
|
||||
struct fat_list;
|
||||
|
||||
struct fat_node
|
||||
{
|
||||
struct fat_node *previous;
|
||||
struct fat_node *next;
|
||||
};
|
||||
|
||||
struct fat_list
|
||||
{
|
||||
struct fat_node *head;
|
||||
struct fat_node *tail;
|
||||
};
|
||||
|
||||
//-----------------------------------------------------------------
|
||||
// Macros
|
||||
//-----------------------------------------------------------------
|
||||
#define fat_list_entry(p, t, m) p ? ((t *)((char *)(p)-(char*)(&((t *)0)->m))) : 0
|
||||
#define fat_list_next(l, p) (p)->next
|
||||
#define fat_list_prev(l, p) (p)->previous
|
||||
#define fat_list_first(l) (l)->head
|
||||
#define fat_list_last(l) (l)->tail
|
||||
#define fat_list_for_each(l, p) for ((p) = (l)->head; (p); (p) = (p)->next)
|
||||
|
||||
//-----------------------------------------------------------------
|
||||
// Inline Functions
|
||||
//-----------------------------------------------------------------
|
||||
|
||||
//-----------------------------------------------------------------
|
||||
// fat_list_init:
|
||||
//-----------------------------------------------------------------
|
||||
static FAT_INLINE void fat_list_init(struct fat_list *list)
|
||||
{
|
||||
FAT_ASSERT(list);
|
||||
|
||||
list->head = list->tail = 0;
|
||||
}
|
||||
//-----------------------------------------------------------------
|
||||
// fat_list_remove:
|
||||
//-----------------------------------------------------------------
|
||||
static FAT_INLINE void fat_list_remove(struct fat_list *list, struct fat_node *node)
|
||||
{
|
||||
FAT_ASSERT(list);
|
||||
FAT_ASSERT(node);
|
||||
|
||||
if(!node->previous)
|
||||
list->head = node->next;
|
||||
else
|
||||
node->previous->next = node->next;
|
||||
|
||||
if(!node->next)
|
||||
list->tail = node->previous;
|
||||
else
|
||||
node->next->previous = node->previous;
|
||||
}
|
||||
//-----------------------------------------------------------------
|
||||
// fat_list_insert_after:
|
||||
//-----------------------------------------------------------------
|
||||
static FAT_INLINE void fat_list_insert_after(struct fat_list *list, struct fat_node *node, struct fat_node *new_node)
|
||||
{
|
||||
FAT_ASSERT(list);
|
||||
FAT_ASSERT(node);
|
||||
FAT_ASSERT(new_node);
|
||||
|
||||
new_node->previous = node;
|
||||
new_node->next = node->next;
|
||||
if (!node->next)
|
||||
list->tail = new_node;
|
||||
else
|
||||
node->next->previous = new_node;
|
||||
node->next = new_node;
|
||||
}
|
||||
//-----------------------------------------------------------------
|
||||
// fat_list_insert_before:
|
||||
//-----------------------------------------------------------------
|
||||
static FAT_INLINE void fat_list_insert_before(struct fat_list *list, struct fat_node *node, struct fat_node *new_node)
|
||||
{
|
||||
FAT_ASSERT(list);
|
||||
FAT_ASSERT(node);
|
||||
FAT_ASSERT(new_node);
|
||||
|
||||
new_node->previous = node->previous;
|
||||
new_node->next = node;
|
||||
if (!node->previous)
|
||||
list->head = new_node;
|
||||
else
|
||||
node->previous->next = new_node;
|
||||
node->previous = new_node;
|
||||
}
|
||||
//-----------------------------------------------------------------
|
||||
// fat_list_insert_first:
|
||||
//-----------------------------------------------------------------
|
||||
static FAT_INLINE void fat_list_insert_first(struct fat_list *list, struct fat_node *node)
|
||||
{
|
||||
FAT_ASSERT(list);
|
||||
FAT_ASSERT(node);
|
||||
|
||||
if (!list->head)
|
||||
{
|
||||
list->head = node;
|
||||
list->tail = node;
|
||||
node->previous = 0;
|
||||
node->next = 0;
|
||||
}
|
||||
else
|
||||
fat_list_insert_before(list, list->head, node);
|
||||
}
|
||||
//-----------------------------------------------------------------
|
||||
// fat_list_insert_last:
|
||||
//-----------------------------------------------------------------
|
||||
static FAT_INLINE void fat_list_insert_last(struct fat_list *list, struct fat_node *node)
|
||||
{
|
||||
FAT_ASSERT(list);
|
||||
FAT_ASSERT(node);
|
||||
|
||||
if (!list->tail)
|
||||
fat_list_insert_first(list, node);
|
||||
else
|
||||
fat_list_insert_after(list, list->tail, node);
|
||||
}
|
||||
//-----------------------------------------------------------------
|
||||
// fat_list_is_empty:
|
||||
//-----------------------------------------------------------------
|
||||
static FAT_INLINE int fat_list_is_empty(struct fat_list *list)
|
||||
{
|
||||
FAT_ASSERT(list);
|
||||
|
||||
return !list->head;
|
||||
}
|
||||
//-----------------------------------------------------------------
|
||||
// fat_list_pop_head:
|
||||
//-----------------------------------------------------------------
|
||||
static FAT_INLINE struct fat_node * fat_list_pop_head(struct fat_list *list)
|
||||
{
|
||||
struct fat_node * node;
|
||||
|
||||
FAT_ASSERT(list);
|
||||
|
||||
node = fat_list_first(list);
|
||||
if (node)
|
||||
fat_list_remove(list, node);
|
||||
|
||||
return node;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
504
ios_fs/source/fat/fat_misc.c
Normal file
504
ios_fs/source/fat/fat_misc.c
Normal file
@ -0,0 +1,504 @@
|
||||
//-----------------------------------------------------------------------------
|
||||
//-----------------------------------------------------------------------------
|
||||
// FAT16/32 File IO Library
|
||||
// V2.6
|
||||
// Ultra-Embedded.com
|
||||
// Copyright 2003 - 2012
|
||||
//
|
||||
// Email: admin@ultra-embedded.com
|
||||
//
|
||||
// License: GPL
|
||||
// If you would like a version with a more permissive license for use in
|
||||
// closed source commercial applications please contact me for details.
|
||||
//-----------------------------------------------------------------------------
|
||||
//
|
||||
// This file is part of FAT File IO Library.
|
||||
//
|
||||
// FAT File IO Library is free software; you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation; either version 2 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// FAT File IO Library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with FAT File IO Library; if not, write to the Free Software
|
||||
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
//-----------------------------------------------------------------------------
|
||||
//-----------------------------------------------------------------------------
|
||||
#include "../imports.h"
|
||||
#include "fat_misc.h"
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_lfn_cache_init: Clear long file name cache
|
||||
//-----------------------------------------------------------------------------
|
||||
void fatfs_lfn_cache_init(struct lfn_cache *lfn, int wipeTable)
|
||||
{
|
||||
int i = 0;
|
||||
|
||||
lfn->no_of_strings = 0;
|
||||
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
|
||||
// Zero out buffer also
|
||||
if (wipeTable)
|
||||
for (i=0;i<MAX_LONGFILENAME_ENTRIES;i++)
|
||||
memset(lfn->String[i], 0x00, MAX_LFN_ENTRY_LENGTH);
|
||||
#endif
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_lfn_cache_entry - Function extracts long file name text from sector
|
||||
// at a specific offset
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
void fatfs_lfn_cache_entry(struct lfn_cache *lfn, uint8 *entryBuffer)
|
||||
{
|
||||
uint8 LFNIndex, i;
|
||||
LFNIndex = entryBuffer[0] & 0x1F;
|
||||
|
||||
// Limit file name to cache size!
|
||||
if (LFNIndex > MAX_LONGFILENAME_ENTRIES)
|
||||
return ;
|
||||
|
||||
// This is an error condition
|
||||
if (LFNIndex == 0)
|
||||
return ;
|
||||
|
||||
if (lfn->no_of_strings == 0)
|
||||
lfn->no_of_strings = LFNIndex;
|
||||
|
||||
lfn->String[LFNIndex-1][0] = entryBuffer[1];
|
||||
lfn->String[LFNIndex-1][1] = entryBuffer[3];
|
||||
lfn->String[LFNIndex-1][2] = entryBuffer[5];
|
||||
lfn->String[LFNIndex-1][3] = entryBuffer[7];
|
||||
lfn->String[LFNIndex-1][4] = entryBuffer[9];
|
||||
lfn->String[LFNIndex-1][5] = entryBuffer[0x0E];
|
||||
lfn->String[LFNIndex-1][6] = entryBuffer[0x10];
|
||||
lfn->String[LFNIndex-1][7] = entryBuffer[0x12];
|
||||
lfn->String[LFNIndex-1][8] = entryBuffer[0x14];
|
||||
lfn->String[LFNIndex-1][9] = entryBuffer[0x16];
|
||||
lfn->String[LFNIndex-1][10] = entryBuffer[0x18];
|
||||
lfn->String[LFNIndex-1][11] = entryBuffer[0x1C];
|
||||
lfn->String[LFNIndex-1][12] = entryBuffer[0x1E];
|
||||
|
||||
for (i=0; i<MAX_LFN_ENTRY_LENGTH; i++)
|
||||
if (lfn->String[LFNIndex-1][i]==0xFF)
|
||||
lfn->String[LFNIndex-1][i] = 0x20; // Replace with spaces
|
||||
}
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_lfn_cache_get: Get a reference to the long filename
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
char* fatfs_lfn_cache_get(struct lfn_cache *lfn)
|
||||
{
|
||||
// Null terminate long filename
|
||||
if (lfn->no_of_strings == MAX_LONGFILENAME_ENTRIES)
|
||||
lfn->Null = '\0';
|
||||
else if (lfn->no_of_strings)
|
||||
lfn->String[lfn->no_of_strings][0] = '\0';
|
||||
else
|
||||
lfn->String[0][0] = '\0';
|
||||
|
||||
return (char*)&lfn->String[0][0];
|
||||
}
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_entry_lfn_text: If LFN text entry found
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
int fatfs_entry_lfn_text(struct fat_dir_entry *entry)
|
||||
{
|
||||
if ((entry->Attr & FILE_ATTR_LFN_TEXT) == FILE_ATTR_LFN_TEXT)
|
||||
return 1;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_entry_lfn_invalid: If SFN found not relating to LFN
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
int fatfs_entry_lfn_invalid(struct fat_dir_entry *entry)
|
||||
{
|
||||
if ( (entry->Name[0]==FILE_HEADER_BLANK) ||
|
||||
(entry->Name[0]==FILE_HEADER_DELETED)||
|
||||
(entry->Attr==FILE_ATTR_VOLUME_ID) ||
|
||||
(entry->Attr & FILE_ATTR_SYSHID) )
|
||||
return 1;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_entry_lfn_exists: If LFN exists and correlation SFN found
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
int fatfs_entry_lfn_exists(struct lfn_cache *lfn, struct fat_dir_entry *entry)
|
||||
{
|
||||
if ( (entry->Attr!=FILE_ATTR_LFN_TEXT) &&
|
||||
(entry->Name[0]!=FILE_HEADER_BLANK) &&
|
||||
(entry->Name[0]!=FILE_HEADER_DELETED) &&
|
||||
(entry->Attr!=FILE_ATTR_VOLUME_ID) &&
|
||||
(!(entry->Attr&FILE_ATTR_SYSHID)) &&
|
||||
(lfn->no_of_strings) )
|
||||
return 1;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_entry_sfn_only: If SFN only exists
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_entry_sfn_only(struct fat_dir_entry *entry)
|
||||
{
|
||||
if ( (entry->Attr!=FILE_ATTR_LFN_TEXT) &&
|
||||
(entry->Name[0]!=FILE_HEADER_BLANK) &&
|
||||
(entry->Name[0]!=FILE_HEADER_DELETED) &&
|
||||
(entry->Attr!=FILE_ATTR_VOLUME_ID) &&
|
||||
(!(entry->Attr&FILE_ATTR_SYSHID)) )
|
||||
return 1;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
// TODO: FILE_ATTR_SYSHID ?!?!??!
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_entry_is_dir: Returns 1 if a directory
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_entry_is_dir(struct fat_dir_entry *entry)
|
||||
{
|
||||
if (entry->Attr & FILE_TYPE_DIR)
|
||||
return 1;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_entry_is_file: Returns 1 is a file entry
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_entry_is_file(struct fat_dir_entry *entry)
|
||||
{
|
||||
if (entry->Attr & FILE_TYPE_FILE)
|
||||
return 1;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_lfn_entries_required: Calculate number of 13 characters entries
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
int fatfs_lfn_entries_required(char *filename)
|
||||
{
|
||||
int length = (int)strlen(filename);
|
||||
|
||||
if (length)
|
||||
return (length + MAX_LFN_ENTRY_LENGTH - 1) / MAX_LFN_ENTRY_LENGTH;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_filename_to_lfn:
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
void fatfs_filename_to_lfn(char *filename, uint8 *buffer, int entry, uint8 sfnChk)
|
||||
{
|
||||
int i;
|
||||
int nameIndexes[MAX_LFN_ENTRY_LENGTH] = {1,3,5,7,9,0x0E,0x10,0x12,0x14,0x16,0x18,0x1C,0x1E};
|
||||
|
||||
// 13 characters entries
|
||||
int length = (int)strlen(filename);
|
||||
int entriesRequired = fatfs_lfn_entries_required(filename);
|
||||
|
||||
// Filename offset
|
||||
int start = entry * MAX_LFN_ENTRY_LENGTH;
|
||||
|
||||
// Initialise to zeros
|
||||
memset(buffer, 0x00, FAT_DIR_ENTRY_SIZE);
|
||||
|
||||
// LFN entry number
|
||||
buffer[0] = (uint8)(((entriesRequired-1)==entry)?(0x40|(entry+1)):(entry+1));
|
||||
|
||||
// LFN flag
|
||||
buffer[11] = 0x0F;
|
||||
|
||||
// Checksum of short filename
|
||||
buffer[13] = sfnChk;
|
||||
|
||||
// Copy to buffer
|
||||
for (i=0;i<MAX_LFN_ENTRY_LENGTH;i++)
|
||||
{
|
||||
if ( (start+i) < length )
|
||||
buffer[nameIndexes[i]] = filename[start+i];
|
||||
else if ( (start+i) == length )
|
||||
buffer[nameIndexes[i]] = 0x00;
|
||||
else
|
||||
{
|
||||
buffer[nameIndexes[i]] = 0xFF;
|
||||
buffer[nameIndexes[i]+1] = 0xFF;
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_sfn_create_entry: Create the short filename directory entry
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_INC_WRITE_SUPPORT
|
||||
void fatfs_sfn_create_entry(char *shortfilename, uint32 size, uint32 startCluster, struct fat_dir_entry *entry, int dir)
|
||||
{
|
||||
int i;
|
||||
|
||||
// Copy short filename
|
||||
for (i=0;i<FAT_SFN_SIZE_FULL;i++)
|
||||
entry->Name[i] = shortfilename[i];
|
||||
|
||||
// Unless we have a RTC we might as well set these to 1980
|
||||
entry->CrtTimeTenth = 0x00;
|
||||
entry->CrtTime[1] = entry->CrtTime[0] = 0x00;
|
||||
entry->CrtDate[1] = 0x00;
|
||||
entry->CrtDate[0] = 0x20;
|
||||
entry->LstAccDate[1] = 0x00;
|
||||
entry->LstAccDate[0] = 0x20;
|
||||
entry->WrtTime[1] = entry->WrtTime[0] = 0x00;
|
||||
entry->WrtDate[1] = 0x00;
|
||||
entry->WrtDate[0] = 0x20;
|
||||
|
||||
if (!dir)
|
||||
entry->Attr = FILE_TYPE_FILE;
|
||||
else
|
||||
entry->Attr = FILE_TYPE_DIR;
|
||||
|
||||
entry->NTRes = 0x00;
|
||||
|
||||
entry->FstClusHI = FAT_HTONS((uint16)((startCluster>>16) & 0xFFFF));
|
||||
entry->FstClusLO = FAT_HTONS((uint16)((startCluster>>0) & 0xFFFF));
|
||||
entry->FileSize = FAT_HTONL(size);
|
||||
}
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_lfn_create_sfn: Create a padded SFN
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_INC_WRITE_SUPPORT
|
||||
int fatfs_lfn_create_sfn(char *sfn_output, char *filename)
|
||||
{
|
||||
int i;
|
||||
int dotPos = -1;
|
||||
char ext[3];
|
||||
int pos;
|
||||
int len = (int)strlen(filename);
|
||||
|
||||
// Invalid to start with .
|
||||
if (filename[0]=='.')
|
||||
return 0;
|
||||
|
||||
memset(sfn_output, ' ', FAT_SFN_SIZE_FULL);
|
||||
memset(ext, ' ', 3);
|
||||
|
||||
// Find dot seperator
|
||||
for (i = 0; i< len; i++)
|
||||
{
|
||||
if (filename[i]=='.')
|
||||
dotPos = i;
|
||||
}
|
||||
|
||||
// Extract extensions
|
||||
if (dotPos!=-1)
|
||||
{
|
||||
// Copy first three chars of extension
|
||||
for (i = (dotPos+1); i < (dotPos+1+3); i++)
|
||||
if (i<len)
|
||||
ext[i-(dotPos+1)] = filename[i];
|
||||
|
||||
// Shorten the length to the dot position
|
||||
len = dotPos;
|
||||
}
|
||||
|
||||
// Add filename part
|
||||
pos = 0;
|
||||
for (i=0;i<len;i++)
|
||||
{
|
||||
if ( (filename[i]!=' ') && (filename[i]!='.') )
|
||||
{
|
||||
if (filename[i] >= 'a' && filename[i] <= 'z')
|
||||
sfn_output[pos++] = filename[i] - 'a' + 'A';
|
||||
else
|
||||
sfn_output[pos++] = filename[i];
|
||||
}
|
||||
|
||||
// Fill upto 8 characters
|
||||
if (pos==FAT_SFN_SIZE_PARTIAL)
|
||||
break;
|
||||
}
|
||||
|
||||
// Add extension part
|
||||
for (i=FAT_SFN_SIZE_PARTIAL;i<FAT_SFN_SIZE_FULL;i++)
|
||||
{
|
||||
if (ext[i-FAT_SFN_SIZE_PARTIAL] >= 'a' && ext[i-FAT_SFN_SIZE_PARTIAL] <= 'z')
|
||||
sfn_output[i] = ext[i-FAT_SFN_SIZE_PARTIAL] - 'a' + 'A';
|
||||
else
|
||||
sfn_output[i] = ext[i-FAT_SFN_SIZE_PARTIAL];
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_itoa:
|
||||
//-----------------------------------------------------------------------------
|
||||
static void fatfs_itoa(uint32 num, char *s)
|
||||
{
|
||||
char* cp;
|
||||
char outbuf[12];
|
||||
const char * digits = "0123456789ABCDEF";
|
||||
|
||||
// Build string backwards
|
||||
cp = outbuf;
|
||||
do
|
||||
{
|
||||
*cp++ = digits[(int)(num % 10)];
|
||||
}
|
||||
while ((num /= 10) > 0);
|
||||
|
||||
*cp-- = 0;
|
||||
|
||||
// Copy in forwards
|
||||
while (cp >= outbuf)
|
||||
*s++ = *cp--;
|
||||
|
||||
*s = 0;
|
||||
}
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_lfn_generate_tail:
|
||||
// sfn_input = Input short filename, spaced format & in upper case
|
||||
// sfn_output = Output short filename with tail
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
#if FATFS_INC_WRITE_SUPPORT
|
||||
int fatfs_lfn_generate_tail(char *sfn_output, char *sfn_input, uint32 tailNum)
|
||||
{
|
||||
int tail_chars;
|
||||
char tail_str[12];
|
||||
|
||||
if (tailNum > 99999)
|
||||
return 0;
|
||||
|
||||
// Convert to number
|
||||
memset(tail_str, 0x00, sizeof(tail_str));
|
||||
tail_str[0] = '~';
|
||||
fatfs_itoa(tailNum, tail_str+1);
|
||||
|
||||
// Copy in base filename
|
||||
memcpy(sfn_output, sfn_input, FAT_SFN_SIZE_FULL);
|
||||
|
||||
// Overwrite with tail
|
||||
tail_chars = (int)strlen(tail_str);
|
||||
memcpy(sfn_output+(FAT_SFN_SIZE_PARTIAL-tail_chars), tail_str, tail_chars);
|
||||
|
||||
return 1;
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_convert_from_fat_time: Convert FAT time to h/m/s
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_INC_TIME_DATE_SUPPORT
|
||||
void fatfs_convert_from_fat_time(uint16 fat_time, int *hours, int *minutes, int *seconds)
|
||||
{
|
||||
*hours = (fat_time >> FAT_TIME_HOURS_SHIFT) & FAT_TIME_HOURS_MASK;
|
||||
*minutes = (fat_time >> FAT_TIME_MINUTES_SHIFT) & FAT_TIME_MINUTES_MASK;
|
||||
*seconds = (fat_time >> FAT_TIME_SECONDS_SHIFT) & FAT_TIME_SECONDS_MASK;
|
||||
*seconds = *seconds * FAT_TIME_SECONDS_SCALE;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_convert_from_fat_date: Convert FAT date to d/m/y
|
||||
//-----------------------------------------------------------------------------
|
||||
void fatfs_convert_from_fat_date(uint16 fat_date, int *day, int *month, int *year)
|
||||
{
|
||||
*day = (fat_date >> FAT_DATE_DAY_SHIFT) & FAT_DATE_DAY_MASK;
|
||||
*month = (fat_date >> FAT_DATE_MONTH_SHIFT) & FAT_DATE_MONTH_MASK;
|
||||
*year = (fat_date >> FAT_DATE_YEAR_SHIFT) & FAT_DATE_YEAR_MASK;
|
||||
*year = *year + FAT_DATE_YEAR_OFFSET;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_convert_to_fat_time: Convert h/m/s to FAT time
|
||||
//-----------------------------------------------------------------------------
|
||||
uint16 fatfs_convert_to_fat_time(int hours, int minutes, int seconds)
|
||||
{
|
||||
uint16 fat_time = 0;
|
||||
|
||||
// Most FAT times are to a resolution of 2 seconds
|
||||
seconds /= FAT_TIME_SECONDS_SCALE;
|
||||
|
||||
fat_time = (hours & FAT_TIME_HOURS_MASK) << FAT_TIME_HOURS_SHIFT;
|
||||
fat_time|= (minutes & FAT_TIME_MINUTES_MASK) << FAT_TIME_MINUTES_SHIFT;
|
||||
fat_time|= (seconds & FAT_TIME_SECONDS_MASK) << FAT_TIME_SECONDS_SHIFT;
|
||||
|
||||
return fat_time;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_convert_to_fat_date: Convert d/m/y to FAT date
|
||||
//-----------------------------------------------------------------------------
|
||||
uint16 fatfs_convert_to_fat_date(int day, int month, int year)
|
||||
{
|
||||
uint16 fat_date = 0;
|
||||
|
||||
// FAT dates are relative to 1980
|
||||
if (year >= FAT_DATE_YEAR_OFFSET)
|
||||
year -= FAT_DATE_YEAR_OFFSET;
|
||||
|
||||
fat_date = (day & FAT_DATE_DAY_MASK) << FAT_DATE_DAY_SHIFT;
|
||||
fat_date|= (month & FAT_DATE_MONTH_MASK) << FAT_DATE_MONTH_SHIFT;
|
||||
fat_date|= (year & FAT_DATE_YEAR_MASK) << FAT_DATE_YEAR_SHIFT;
|
||||
|
||||
return fat_date;
|
||||
}
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_print_sector:
|
||||
//-----------------------------------------------------------------------------
|
||||
#ifdef FATFS_DEBUG
|
||||
void fatfs_print_sector(uint32 sector, uint8 *data)
|
||||
{
|
||||
int i;
|
||||
int j;
|
||||
|
||||
FAT_PRINTF(("Sector %d:\n", sector));
|
||||
|
||||
for (i=0;i<FAT_SECTOR_SIZE;i++)
|
||||
{
|
||||
if (!((i) % 16))
|
||||
{
|
||||
FAT_PRINTF((" %04d: ", i));
|
||||
}
|
||||
|
||||
FAT_PRINTF(("%02x", data[i]));
|
||||
if (!((i+1) % 4))
|
||||
{
|
||||
FAT_PRINTF((" "));
|
||||
}
|
||||
|
||||
if (!((i+1) % 16))
|
||||
{
|
||||
FAT_PRINTF((" "));
|
||||
for (j=0;j<16;j++)
|
||||
{
|
||||
char ch = data[i-15+j];
|
||||
|
||||
// Is printable?
|
||||
if (ch > 31 && ch < 127)
|
||||
{
|
||||
FAT_PRINTF(("%c", ch));
|
||||
}
|
||||
else
|
||||
{
|
||||
FAT_PRINTF(("."));
|
||||
}
|
||||
}
|
||||
|
||||
FAT_PRINTF(("\n"));
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
63
ios_fs/source/fat/fat_misc.h
Normal file
63
ios_fs/source/fat/fat_misc.h
Normal file
@ -0,0 +1,63 @@
|
||||
#ifndef __FAT_MISC_H__
|
||||
#define __FAT_MISC_H__
|
||||
|
||||
#include "fat_defs.h"
|
||||
#include "fat_opts.h"
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Defines
|
||||
//-----------------------------------------------------------------------------
|
||||
#define MAX_LONGFILENAME_ENTRIES 20
|
||||
#define MAX_LFN_ENTRY_LENGTH 13
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Macros
|
||||
//-----------------------------------------------------------------------------
|
||||
#define GET_32BIT_WORD(buffer, location) ( ((uint32)buffer[location+3]<<24) + ((uint32)buffer[location+2]<<16) + ((uint32)buffer[location+1]<<8) + (uint32)buffer[location+0] )
|
||||
#define GET_16BIT_WORD(buffer, location) ( ((uint16)buffer[location+1]<<8) + (uint16)buffer[location+0] )
|
||||
|
||||
#define SET_32BIT_WORD(buffer, location, value) { buffer[location+0] = (uint8)((value)&0xFF); \
|
||||
buffer[location+1] = (uint8)((value>>8)&0xFF); \
|
||||
buffer[location+2] = (uint8)((value>>16)&0xFF); \
|
||||
buffer[location+3] = (uint8)((value>>24)&0xFF); }
|
||||
|
||||
#define SET_16BIT_WORD(buffer, location, value) { buffer[location+0] = (uint8)((value)&0xFF); \
|
||||
buffer[location+1] = (uint8)((value>>8)&0xFF); }
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Structures
|
||||
//-----------------------------------------------------------------------------
|
||||
struct lfn_cache
|
||||
{
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
// Long File Name Structure (max 260 LFN length)
|
||||
uint8 String[MAX_LONGFILENAME_ENTRIES][MAX_LFN_ENTRY_LENGTH];
|
||||
uint8 Null;
|
||||
#endif
|
||||
uint8 no_of_strings;
|
||||
};
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Prototypes
|
||||
//-----------------------------------------------------------------------------
|
||||
void fatfs_lfn_cache_init(struct lfn_cache *lfn, int wipeTable);
|
||||
void fatfs_lfn_cache_entry(struct lfn_cache *lfn, uint8 *entryBuffer);
|
||||
char* fatfs_lfn_cache_get(struct lfn_cache *lfn);
|
||||
int fatfs_entry_lfn_text(struct fat_dir_entry *entry);
|
||||
int fatfs_entry_lfn_invalid(struct fat_dir_entry *entry);
|
||||
int fatfs_entry_lfn_exists(struct lfn_cache *lfn, struct fat_dir_entry *entry);
|
||||
int fatfs_entry_sfn_only(struct fat_dir_entry *entry);
|
||||
int fatfs_entry_is_dir(struct fat_dir_entry *entry);
|
||||
int fatfs_entry_is_file(struct fat_dir_entry *entry);
|
||||
int fatfs_lfn_entries_required(char *filename);
|
||||
void fatfs_filename_to_lfn(char *filename, uint8 *buffer, int entry, uint8 sfnChk);
|
||||
void fatfs_sfn_create_entry(char *shortfilename, uint32 size, uint32 startCluster, struct fat_dir_entry *entry, int dir);
|
||||
int fatfs_lfn_create_sfn(char *sfn_output, char *filename);
|
||||
int fatfs_lfn_generate_tail(char *sfn_output, char *sfn_input, uint32 tailNum);
|
||||
void fatfs_convert_from_fat_time(uint16 fat_time, int *hours, int *minutes, int *seconds);
|
||||
void fatfs_convert_from_fat_date(uint16 fat_date, int *day, int *month, int *year);
|
||||
uint16 fatfs_convert_to_fat_time(int hours, int minutes, int seconds);
|
||||
uint16 fatfs_convert_to_fat_date(int day, int month, int year);
|
||||
void fatfs_print_sector(uint32 sector, uint8 *data);
|
||||
|
||||
#endif
|
||||
91
ios_fs/source/fat/fat_opts.h
Normal file
91
ios_fs/source/fat/fat_opts.h
Normal file
@ -0,0 +1,91 @@
|
||||
#ifndef __FAT_OPTS_H__
|
||||
#define __FAT_OPTS_H__
|
||||
|
||||
#ifdef FATFS_USE_CUSTOM_OPTS_FILE
|
||||
#include "fat_custom.h"
|
||||
#endif
|
||||
|
||||
//-------------------------------------------------------------
|
||||
// Configuration
|
||||
//-------------------------------------------------------------
|
||||
|
||||
// Is the processor little endian (1) or big endian (0)
|
||||
#ifndef FATFS_IS_LITTLE_ENDIAN
|
||||
#define FATFS_IS_LITTLE_ENDIAN 0
|
||||
#endif
|
||||
|
||||
// Max filename Length
|
||||
#ifndef FATFS_MAX_LONG_FILENAME
|
||||
#define FATFS_MAX_LONG_FILENAME 260
|
||||
#endif
|
||||
|
||||
// Max open files (reduce to lower memory requirements)
|
||||
#ifndef FATFS_MAX_OPEN_FILES
|
||||
#define FATFS_MAX_OPEN_FILES 2
|
||||
#endif
|
||||
|
||||
// Number of sectors per FAT_BUFFER (min 1)
|
||||
#ifndef FAT_BUFFER_SECTORS
|
||||
#define FAT_BUFFER_SECTORS 1
|
||||
#endif
|
||||
|
||||
// Max FAT sectors to buffer (min 1)
|
||||
// (mem used is FAT_BUFFERS * FAT_BUFFER_SECTORS * FAT_SECTOR_SIZE)
|
||||
#ifndef FAT_BUFFERS
|
||||
#define FAT_BUFFERS 1
|
||||
#endif
|
||||
|
||||
// Size of cluster chain cache (can be undefined)
|
||||
// Mem used = FAT_CLUSTER_CACHE_ENTRIES * 4 * 2
|
||||
// Improves access speed considerably
|
||||
//#define FAT_CLUSTER_CACHE_ENTRIES 128
|
||||
|
||||
// Include support for writing files (1 / 0)?
|
||||
#ifndef FATFS_INC_WRITE_SUPPORT
|
||||
#define FATFS_INC_WRITE_SUPPORT 1
|
||||
#endif
|
||||
|
||||
// Support long filenames (1 / 0)?
|
||||
// (if not (0) only 8.3 format is supported)
|
||||
#ifndef FATFS_INC_LFN_SUPPORT
|
||||
#define FATFS_INC_LFN_SUPPORT 1
|
||||
#endif
|
||||
|
||||
// Support directory listing (1 / 0)?
|
||||
#ifndef FATFS_DIR_LIST_SUPPORT
|
||||
#define FATFS_DIR_LIST_SUPPORT 0
|
||||
#endif
|
||||
|
||||
// Support time/date (1 / 0)?
|
||||
#ifndef FATFS_INC_TIME_DATE_SUPPORT
|
||||
#define FATFS_INC_TIME_DATE_SUPPORT 0
|
||||
#endif
|
||||
|
||||
// Include support for formatting disks (1 / 0)?
|
||||
#ifndef FATFS_INC_FORMAT_SUPPORT
|
||||
#define FATFS_INC_FORMAT_SUPPORT 0
|
||||
#endif
|
||||
|
||||
// Sector size used
|
||||
#define FAT_SECTOR_SIZE 512
|
||||
|
||||
// Printf output (directory listing / debug)
|
||||
#define FAT_PRINTF(a)
|
||||
#ifndef FAT_PRINTF
|
||||
// Don't include stdio, but there is a printf function available
|
||||
#ifdef FAT_PRINTF_NOINC_STDIO
|
||||
extern int printf(const char* ctrl1, ... );
|
||||
#define FAT_PRINTF(a) printf a
|
||||
// Include stdio to use printf
|
||||
#else
|
||||
#include <stdio.h>
|
||||
#define FAT_PRINTF(a) printf a
|
||||
#endif
|
||||
#endif
|
||||
|
||||
// Time/Date support requires time.h
|
||||
#if FATFS_INC_TIME_DATE_SUPPORT
|
||||
#include <time.h>
|
||||
#endif
|
||||
|
||||
#endif
|
||||
513
ios_fs/source/fat/fat_string.c
Normal file
513
ios_fs/source/fat/fat_string.c
Normal file
@ -0,0 +1,513 @@
|
||||
//-----------------------------------------------------------------------------
|
||||
//-----------------------------------------------------------------------------
|
||||
// FAT16/32 File IO Library
|
||||
// V2.6
|
||||
// Ultra-Embedded.com
|
||||
// Copyright 2003 - 2012
|
||||
//
|
||||
// Email: admin@ultra-embedded.com
|
||||
//
|
||||
// License: GPL
|
||||
// If you would like a version with a more permissive license for use in
|
||||
// closed source commercial applications please contact me for details.
|
||||
//-----------------------------------------------------------------------------
|
||||
//
|
||||
// This file is part of FAT File IO Library.
|
||||
//
|
||||
// FAT File IO Library is free software; you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation; either version 2 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// FAT File IO Library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with FAT File IO Library; if not, write to the Free Software
|
||||
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
//-----------------------------------------------------------------------------
|
||||
//-----------------------------------------------------------------------------
|
||||
#include "../imports.h"
|
||||
#include "fat_string.h"
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_total_path_levels: Take a filename and path and count the sub levels
|
||||
// of folders. E.g. C:\folder\file.zip = 1 level
|
||||
// Acceptable input formats are:
|
||||
// c:\folder\file.zip
|
||||
// /dev/etc/samba.conf
|
||||
// Returns: -1 = Error, 0 or more = Ok
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_total_path_levels(char *path)
|
||||
{
|
||||
int levels = 0;
|
||||
char expectedchar;
|
||||
|
||||
if (!path)
|
||||
return -1;
|
||||
|
||||
// Acceptable formats:
|
||||
// c:\folder\file.zip
|
||||
// /dev/etc/samba.conf
|
||||
if (*path == '/')
|
||||
{
|
||||
expectedchar = '/';
|
||||
path++;
|
||||
}
|
||||
else if (path[1] == ':' || path[2] == '\\')
|
||||
{
|
||||
expectedchar = '\\';
|
||||
path += 3;
|
||||
}
|
||||
else
|
||||
return -1;
|
||||
|
||||
// Count levels in path string
|
||||
while (*path)
|
||||
{
|
||||
// Fast forward through actual subdir text to next slash
|
||||
for (; *path; )
|
||||
{
|
||||
// If slash detected escape from for loop
|
||||
if (*path == expectedchar) { path++; break; }
|
||||
path++;
|
||||
}
|
||||
|
||||
// Increase number of subdirs founds
|
||||
levels++;
|
||||
}
|
||||
|
||||
// Subtract the file itself
|
||||
return levels-1;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_get_substring: Get a substring from 'path' which contains the folder
|
||||
// (or file) at the specified level.
|
||||
// E.g. C:\folder\file.zip : Level 0 = C:\folder, Level 1 = file.zip
|
||||
// Returns: -1 = Error, 0 = Ok
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_get_substring(char *path, int levelreq, char *output, int max_len)
|
||||
{
|
||||
int i;
|
||||
int pathlen=0;
|
||||
int levels=0;
|
||||
int copypnt=0;
|
||||
char expectedchar;
|
||||
|
||||
if (!path || max_len <= 0)
|
||||
return -1;
|
||||
|
||||
// Acceptable formats:
|
||||
// c:\folder\file.zip
|
||||
// /dev/etc/samba.conf
|
||||
if (*path == '/')
|
||||
{
|
||||
expectedchar = '/';
|
||||
path++;
|
||||
}
|
||||
else if (path[1] == ':' || path[2] == '\\')
|
||||
{
|
||||
expectedchar = '\\';
|
||||
path += 3;
|
||||
}
|
||||
else
|
||||
return -1;
|
||||
|
||||
// Get string length of path
|
||||
pathlen = (int)strlen (path);
|
||||
|
||||
// Loop through the number of times as characters in 'path'
|
||||
for (i = 0; i<pathlen; i++)
|
||||
{
|
||||
// If a '\' is found then increase level
|
||||
if (*path == expectedchar) levels++;
|
||||
|
||||
// If correct level and the character is not a '\' or '/' then copy text to 'output'
|
||||
if ( (levels == levelreq) && (*path != expectedchar) && (copypnt < (max_len-1)))
|
||||
output[copypnt++] = *path;
|
||||
|
||||
// Increment through path string
|
||||
path++;
|
||||
}
|
||||
|
||||
// Null Terminate
|
||||
output[copypnt] = '\0';
|
||||
|
||||
// If a string was copied return 0 else return 1
|
||||
if (output[0] != '\0')
|
||||
return 0; // OK
|
||||
else
|
||||
return -1; // Error
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_split_path: Full path contains the passed in string.
|
||||
// Returned is the path string and file Name string
|
||||
// E.g. C:\folder\file.zip -> path = C:\folder filename = file.zip
|
||||
// E.g. C:\file.zip -> path = [blank] filename = file.zip
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_split_path(char *full_path, char *path, int max_path, char *filename, int max_filename)
|
||||
{
|
||||
int strindex;
|
||||
|
||||
// Count the levels to the filepath
|
||||
int levels = fatfs_total_path_levels(full_path);
|
||||
if (levels == -1)
|
||||
return -1;
|
||||
|
||||
// Get filename part of string
|
||||
if (fatfs_get_substring(full_path, levels, filename, max_filename) != 0)
|
||||
return -1;
|
||||
|
||||
// If root file
|
||||
if (levels == 0)
|
||||
path[0] = '\0';
|
||||
else
|
||||
{
|
||||
strindex = (int)strlen(full_path) - (int)strlen(filename);
|
||||
if (strindex > max_path)
|
||||
strindex = max_path;
|
||||
|
||||
memcpy(path, full_path, strindex);
|
||||
path[strindex-1] = '\0';
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// FileString_StrCmpNoCase: Compare two strings case with case sensitivity
|
||||
//-----------------------------------------------------------------------------
|
||||
static int FileString_StrCmpNoCase(char *s1, char *s2, int n)
|
||||
{
|
||||
int diff;
|
||||
char a,b;
|
||||
|
||||
while (n--)
|
||||
{
|
||||
a = *s1;
|
||||
b = *s2;
|
||||
|
||||
// Make lower case if uppercase
|
||||
if ((a>='A') && (a<='Z'))
|
||||
a+= 32;
|
||||
if ((b>='A') && (b<='Z'))
|
||||
b+= 32;
|
||||
|
||||
diff = a - b;
|
||||
|
||||
// If different
|
||||
if (diff)
|
||||
return diff;
|
||||
|
||||
// If run out of strings
|
||||
if ( (*s1 == 0) || (*s2 == 0) )
|
||||
break;
|
||||
|
||||
s1++;
|
||||
s2++;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// FileString_GetExtension: Get index to extension within filename
|
||||
// Returns -1 if not found or index otherwise
|
||||
//-----------------------------------------------------------------------------
|
||||
static int FileString_GetExtension(char *str)
|
||||
{
|
||||
int dotPos = -1;
|
||||
char *strSrc = str;
|
||||
|
||||
// Find last '.' in string (if at all)
|
||||
while (*strSrc)
|
||||
{
|
||||
if (*strSrc=='.')
|
||||
dotPos = (int)(strSrc-str);
|
||||
|
||||
strSrc++;
|
||||
}
|
||||
|
||||
return dotPos;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// FileString_TrimLength: Get length of string excluding trailing spaces
|
||||
// Returns -1 if not found or index otherwise
|
||||
//-----------------------------------------------------------------------------
|
||||
static int FileString_TrimLength(char *str, int strLen)
|
||||
{
|
||||
int length = strLen;
|
||||
char *strSrc = str+strLen-1;
|
||||
|
||||
// Find last non white space
|
||||
while (strLen != 0)
|
||||
{
|
||||
if (*strSrc == ' ')
|
||||
length = (int)(strSrc - str);
|
||||
else
|
||||
break;
|
||||
|
||||
strSrc--;
|
||||
strLen--;
|
||||
}
|
||||
|
||||
return length;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_compare_names: Compare two filenames (without copying or changing origonals)
|
||||
// Returns 1 if match, 0 if not
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_compare_names(char* strA, char* strB)
|
||||
{
|
||||
char *ext1 = NULL;
|
||||
char *ext2 = NULL;
|
||||
int ext1Pos, ext2Pos;
|
||||
int file1Len, file2Len;
|
||||
|
||||
// Get both files extension
|
||||
ext1Pos = FileString_GetExtension(strA);
|
||||
ext2Pos = FileString_GetExtension(strB);
|
||||
|
||||
// NOTE: Extension position can be different for matching
|
||||
// filename if trailing space are present before it!
|
||||
// Check that if one has an extension, so does the other
|
||||
if ((ext1Pos==-1) && (ext2Pos!=-1))
|
||||
return 0;
|
||||
if ((ext2Pos==-1) && (ext1Pos!=-1))
|
||||
return 0;
|
||||
|
||||
// If they both have extensions, compare them
|
||||
if (ext1Pos!=-1)
|
||||
{
|
||||
// Set pointer to start of extension
|
||||
ext1 = strA+ext1Pos+1;
|
||||
ext2 = strB+ext2Pos+1;
|
||||
|
||||
// Verify that the file extension lengths match!
|
||||
if (strlen(ext1) != strlen(ext2))
|
||||
return 0;
|
||||
|
||||
// If they dont match
|
||||
if (FileString_StrCmpNoCase(ext1, ext2, (int)strlen(ext1))!=0)
|
||||
return 0;
|
||||
|
||||
// Filelength is upto extensions
|
||||
file1Len = ext1Pos;
|
||||
file2Len = ext2Pos;
|
||||
}
|
||||
// No extensions
|
||||
else
|
||||
{
|
||||
// Filelength is actual filelength
|
||||
file1Len = (int)strlen(strA);
|
||||
file2Len = (int)strlen(strB);
|
||||
}
|
||||
|
||||
// Find length without trailing spaces (before ext)
|
||||
file1Len = FileString_TrimLength(strA, file1Len);
|
||||
file2Len = FileString_TrimLength(strB, file2Len);
|
||||
|
||||
// Check the file lengths match
|
||||
if (file1Len!=file2Len)
|
||||
return 0;
|
||||
|
||||
// Compare main part of filenames
|
||||
if (FileString_StrCmpNoCase(strA, strB, file1Len)!=0)
|
||||
return 0;
|
||||
else
|
||||
return 1;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_string_ends_with_slash: Does the string end with a slash (\ or /)
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_string_ends_with_slash(char *path)
|
||||
{
|
||||
if (path)
|
||||
{
|
||||
while (*path)
|
||||
{
|
||||
// Last character?
|
||||
if (!(*(path+1)))
|
||||
{
|
||||
if (*path == '\\' || *path == '/')
|
||||
return 1;
|
||||
}
|
||||
|
||||
path++;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_get_sfn_display_name: Get display name for SFN entry
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_get_sfn_display_name(char* out, char* in)
|
||||
{
|
||||
int len = 0;
|
||||
while (*in && len <= 11)
|
||||
{
|
||||
char a = *in++;
|
||||
|
||||
if (a == ' ')
|
||||
continue;
|
||||
// Make lower case if uppercase
|
||||
else if ((a>='A') && (a<='Z'))
|
||||
a+= 32;
|
||||
|
||||
*out++ = a;
|
||||
len++;
|
||||
}
|
||||
|
||||
*out = '\0';
|
||||
return 1;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_get_extension: Get extension of filename passed in 'filename'.
|
||||
// Returned extension is always lower case.
|
||||
// Returns: 1 if ok, 0 if not.
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_get_extension(char* filename, char* out, int maxlen)
|
||||
{
|
||||
int len = 0;
|
||||
|
||||
// Get files extension offset
|
||||
int ext_pos = FileString_GetExtension(filename);
|
||||
|
||||
if (ext_pos > 0 && out && maxlen)
|
||||
{
|
||||
filename += ext_pos + 1;
|
||||
|
||||
while (*filename && len < (maxlen-1))
|
||||
{
|
||||
char a = *filename++;
|
||||
|
||||
// Make lowercase if uppercase
|
||||
if ((a>='A') && (a<='Z'))
|
||||
a+= 32;
|
||||
|
||||
*out++ = a;
|
||||
len++;
|
||||
}
|
||||
|
||||
*out = '\0';
|
||||
return 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_create_path_string: Append path & filename to create file path string.
|
||||
// Returns: 1 if ok, 0 if not.
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_create_path_string(char* path, char *filename, char* out, int maxlen)
|
||||
{
|
||||
int len = 0;
|
||||
char last = 0;
|
||||
char seperator = '/';
|
||||
|
||||
if (path && filename && out && maxlen > 0)
|
||||
{
|
||||
while (*path && len < (maxlen-2))
|
||||
{
|
||||
last = *path++;
|
||||
if (last == '\\')
|
||||
seperator = '\\';
|
||||
*out++ = last;
|
||||
len++;
|
||||
}
|
||||
|
||||
// Add a seperator if trailing one not found
|
||||
if (last != '\\' && last != '/')
|
||||
*out++ = seperator;
|
||||
|
||||
while (*filename && len < (maxlen-1))
|
||||
{
|
||||
*out++ = *filename++;
|
||||
len++;
|
||||
}
|
||||
|
||||
*out = '\0';
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// Test Bench
|
||||
//-----------------------------------------------------------------------------
|
||||
#ifdef FAT_STRING_TESTBENCH
|
||||
void main(void)
|
||||
{
|
||||
char output[255];
|
||||
char output2[255];
|
||||
|
||||
assert(fatfs_total_path_levels("C:\\folder\\file.zip") == 1);
|
||||
assert(fatfs_total_path_levels("C:\\file.zip") == 0);
|
||||
assert(fatfs_total_path_levels("C:\\folder\\folder2\\file.zip") == 2);
|
||||
assert(fatfs_total_path_levels("C:\\") == -1);
|
||||
assert(fatfs_total_path_levels("") == -1);
|
||||
assert(fatfs_total_path_levels("/dev/etc/file.zip") == 2);
|
||||
assert(fatfs_total_path_levels("/dev/file.zip") == 1);
|
||||
|
||||
assert(fatfs_get_substring("C:\\folder\\file.zip", 0, output, sizeof(output)) == 0);
|
||||
assert(strcmp(output, "folder") == 0);
|
||||
|
||||
assert(fatfs_get_substring("C:\\folder\\file.zip", 1, output, sizeof(output)) == 0);
|
||||
assert(strcmp(output, "file.zip") == 0);
|
||||
|
||||
assert(fatfs_get_substring("/dev/etc/file.zip", 0, output, sizeof(output)) == 0);
|
||||
assert(strcmp(output, "dev") == 0);
|
||||
|
||||
assert(fatfs_get_substring("/dev/etc/file.zip", 1, output, sizeof(output)) == 0);
|
||||
assert(strcmp(output, "etc") == 0);
|
||||
|
||||
assert(fatfs_get_substring("/dev/etc/file.zip", 2, output, sizeof(output)) == 0);
|
||||
assert(strcmp(output, "file.zip") == 0);
|
||||
|
||||
assert(fatfs_split_path("C:\\folder\\file.zip", output, sizeof(output), output2, sizeof(output2)) == 0);
|
||||
assert(strcmp(output, "C:\\folder") == 0);
|
||||
assert(strcmp(output2, "file.zip") == 0);
|
||||
|
||||
assert(fatfs_split_path("C:\\file.zip", output, sizeof(output), output2, sizeof(output2)) == 0);
|
||||
assert(output[0] == 0);
|
||||
assert(strcmp(output2, "file.zip") == 0);
|
||||
|
||||
assert(fatfs_split_path("/dev/etc/file.zip", output, sizeof(output), output2, sizeof(output2)) == 0);
|
||||
assert(strcmp(output, "/dev/etc") == 0);
|
||||
assert(strcmp(output2, "file.zip") == 0);
|
||||
|
||||
assert(FileString_GetExtension("C:\\file.zip") == strlen("C:\\file"));
|
||||
assert(FileString_GetExtension("C:\\file.zip.ext") == strlen("C:\\file.zip"));
|
||||
assert(FileString_GetExtension("C:\\file.zip.") == strlen("C:\\file.zip"));
|
||||
|
||||
assert(FileString_TrimLength("C:\\file.zip", strlen("C:\\file.zip")) == strlen("C:\\file.zip"));
|
||||
assert(FileString_TrimLength("C:\\file.zip ", strlen("C:\\file.zip ")) == strlen("C:\\file.zip"));
|
||||
assert(FileString_TrimLength(" ", strlen(" ")) == 0);
|
||||
|
||||
assert(fatfs_compare_names("C:\\file.ext", "C:\\file.ext") == 1);
|
||||
assert(fatfs_compare_names("C:\\file2.ext", "C:\\file.ext") == 0);
|
||||
assert(fatfs_compare_names("C:\\file .ext", "C:\\file.ext") == 1);
|
||||
assert(fatfs_compare_names("C:\\file .ext", "C:\\file2.ext") == 0);
|
||||
|
||||
assert(fatfs_string_ends_with_slash("C:\\folder") == 0);
|
||||
assert(fatfs_string_ends_with_slash("C:\\folder\\") == 1);
|
||||
assert(fatfs_string_ends_with_slash("/path") == 0);
|
||||
assert(fatfs_string_ends_with_slash("/path/a") == 0);
|
||||
assert(fatfs_string_ends_with_slash("/path/") == 1);
|
||||
|
||||
assert(fatfs_get_extension("/mypath/file.wav", output, 4) == 1);
|
||||
assert(strcmp(output, "wav") == 0);
|
||||
assert(fatfs_get_extension("/mypath/file.WAV", output, 4) == 1);
|
||||
assert(strcmp(output, "wav") == 0);
|
||||
assert(fatfs_get_extension("/mypath/file.zip", output, 4) == 1);
|
||||
assert(strcmp(output, "ext") != 0);
|
||||
|
||||
assert(fatfs_create_path_string("/mydir1", "myfile.txt", output, sizeof(output)) == 1);
|
||||
assert(strcmp(output, "/mydir1/myfile.txt") == 0);
|
||||
assert(fatfs_create_path_string("/mydir2/", "myfile2.txt", output, sizeof(output)) == 1);
|
||||
assert(strcmp(output, "/mydir2/myfile2.txt") == 0);
|
||||
assert(fatfs_create_path_string("C:\\mydir3", "myfile3.txt", output, sizeof(output)) == 1);
|
||||
assert(strcmp(output, "C:\\mydir3\\myfile3.txt") == 0);
|
||||
}
|
||||
#endif
|
||||
20
ios_fs/source/fat/fat_string.h
Normal file
20
ios_fs/source/fat/fat_string.h
Normal file
@ -0,0 +1,20 @@
|
||||
#ifndef __FILESTRING_H__
|
||||
#define __FILESTRING_H__
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Prototypes
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_total_path_levels(char *path);
|
||||
int fatfs_get_substring(char *Path, int levelreq, char *output, int max_len);
|
||||
int fatfs_split_path(char *FullPath, char *Path, int max_path, char *FileName, int max_filename);
|
||||
int fatfs_compare_names(char* strA, char* strB);
|
||||
int fatfs_string_ends_with_slash(char *path);
|
||||
int fatfs_get_sfn_display_name(char* out, char* in);
|
||||
int fatfs_get_extension(char* filename, char* out, int maxlen);
|
||||
int fatfs_create_path_string(char* path, char *filename, char* out, int maxlen);
|
||||
|
||||
#ifndef NULL
|
||||
#define NULL 0
|
||||
#endif
|
||||
|
||||
#endif
|
||||
478
ios_fs/source/fat/fat_table.c
Normal file
478
ios_fs/source/fat/fat_table.c
Normal file
@ -0,0 +1,478 @@
|
||||
//-----------------------------------------------------------------------------
|
||||
//-----------------------------------------------------------------------------
|
||||
// FAT16/32 File IO Library
|
||||
// V2.6
|
||||
// Ultra-Embedded.com
|
||||
// Copyright 2003 - 2012
|
||||
//
|
||||
// Email: admin@ultra-embedded.com
|
||||
//
|
||||
// License: GPL
|
||||
// If you would like a version with a more permissive license for use in
|
||||
// closed source commercial applications please contact me for details.
|
||||
//-----------------------------------------------------------------------------
|
||||
//
|
||||
// This file is part of FAT File IO Library.
|
||||
//
|
||||
// FAT File IO Library is free software; you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation; either version 2 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// FAT File IO Library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with FAT File IO Library; if not, write to the Free Software
|
||||
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
//-----------------------------------------------------------------------------
|
||||
//-----------------------------------------------------------------------------
|
||||
#include "../imports.h"
|
||||
#include "fat_defs.h"
|
||||
#include "fat_access.h"
|
||||
#include "fat_table.h"
|
||||
|
||||
#ifndef FAT_BUFFERS
|
||||
#define FAT_BUFFERS 1
|
||||
#endif
|
||||
|
||||
#ifndef FAT_BUFFER_SECTORS
|
||||
#define FAT_BUFFER_SECTORS 1
|
||||
#endif
|
||||
|
||||
#if FAT_BUFFERS < 1 || FAT_BUFFER_SECTORS < 1
|
||||
#error "FAT_BUFFERS & FAT_BUFFER_SECTORS must be at least 1"
|
||||
#endif
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// FAT Sector Buffer
|
||||
//-----------------------------------------------------------------------------
|
||||
#define FAT32_GET_32BIT_WORD(pbuf, location) ( GET_32BIT_WORD(pbuf->ptr, location) )
|
||||
#define FAT32_SET_32BIT_WORD(pbuf, location, value) { SET_32BIT_WORD(pbuf->ptr, location, value); pbuf->dirty = 1; }
|
||||
#define FAT16_GET_16BIT_WORD(pbuf, location) ( GET_16BIT_WORD(pbuf->ptr, location) )
|
||||
#define FAT16_SET_16BIT_WORD(pbuf, location, value) { SET_16BIT_WORD(pbuf->ptr, location, value); pbuf->dirty = 1; }
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_fat_init:
|
||||
//-----------------------------------------------------------------------------
|
||||
void fatfs_fat_init(struct fatfs *fs)
|
||||
{
|
||||
int i;
|
||||
|
||||
// FAT buffer chain head
|
||||
fs->fat_buffer_head = NULL;
|
||||
|
||||
for (i=0;i<FAT_BUFFERS;i++)
|
||||
{
|
||||
// Initialise buffers to invalid
|
||||
fs->fat_buffers[i].address = FAT32_INVALID_CLUSTER;
|
||||
fs->fat_buffers[i].dirty = 0;
|
||||
memset(fs->fat_buffers[i].sector, 0x00, sizeof(fs->fat_buffers[i].sector));
|
||||
fs->fat_buffers[i].ptr = NULL;
|
||||
|
||||
// Add to head of queue
|
||||
fs->fat_buffers[i].next = fs->fat_buffer_head;
|
||||
fs->fat_buffer_head = &fs->fat_buffers[i];
|
||||
}
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_fat_writeback: Writeback 'dirty' FAT sectors to disk
|
||||
//-----------------------------------------------------------------------------
|
||||
static int fatfs_fat_writeback(struct fatfs *fs, struct fat_buffer *pcur)
|
||||
{
|
||||
if (pcur)
|
||||
{
|
||||
// Writeback sector if changed
|
||||
if (pcur->dirty)
|
||||
{
|
||||
if (fs->disk_io.write_media)
|
||||
{
|
||||
uint32 sectors = FAT_BUFFER_SECTORS;
|
||||
uint32 offset = pcur->address - fs->fat_begin_lba;
|
||||
|
||||
// Limit to sectors used for the FAT
|
||||
if ((offset + FAT_BUFFER_SECTORS) <= fs->fat_sectors)
|
||||
sectors = FAT_BUFFER_SECTORS;
|
||||
else
|
||||
sectors = fs->fat_sectors - offset;
|
||||
|
||||
if (!fs->disk_io.write_media(pcur->address, pcur->sector, sectors))
|
||||
return 0;
|
||||
}
|
||||
|
||||
pcur->dirty = 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_fat_read_sector: Read a FAT sector
|
||||
//-----------------------------------------------------------------------------
|
||||
static struct fat_buffer *fatfs_fat_read_sector(struct fatfs *fs, uint32 sector)
|
||||
{
|
||||
struct fat_buffer *last = NULL;
|
||||
struct fat_buffer *pcur = fs->fat_buffer_head;
|
||||
|
||||
// Itterate through sector buffer list
|
||||
while (pcur)
|
||||
{
|
||||
// Sector within this buffer?
|
||||
if ((sector >= pcur->address) && (sector < (pcur->address + FAT_BUFFER_SECTORS)))
|
||||
break;
|
||||
|
||||
// End of list?
|
||||
if (pcur->next == NULL)
|
||||
{
|
||||
// Remove buffer from list
|
||||
if (last)
|
||||
last->next = NULL;
|
||||
// We the first and last buffer in the chain?
|
||||
else
|
||||
fs->fat_buffer_head = NULL;
|
||||
}
|
||||
|
||||
last = pcur;
|
||||
pcur = pcur->next;
|
||||
}
|
||||
|
||||
// We found the sector already in FAT buffer chain
|
||||
if (pcur)
|
||||
{
|
||||
pcur->ptr = (uint8 *)(pcur->sector + ((sector - pcur->address) * FAT_SECTOR_SIZE));
|
||||
return pcur;
|
||||
}
|
||||
|
||||
// Else, we removed the last item from the list
|
||||
pcur = last;
|
||||
|
||||
// Add to start of sector buffer list (now newest sector)
|
||||
pcur->next = fs->fat_buffer_head;
|
||||
fs->fat_buffer_head = pcur;
|
||||
|
||||
// Writeback sector if changed
|
||||
if (pcur->dirty)
|
||||
if (!fatfs_fat_writeback(fs, pcur))
|
||||
return 0;
|
||||
|
||||
// Address is now new sector
|
||||
pcur->address = sector;
|
||||
|
||||
// Read next sector
|
||||
if (!fs->disk_io.read_media(pcur->address, pcur->sector, FAT_BUFFER_SECTORS))
|
||||
{
|
||||
// Read failed, invalidate buffer address
|
||||
pcur->address = FAT32_INVALID_CLUSTER;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
pcur->ptr = pcur->sector;
|
||||
return pcur;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_fat_purge: Purge 'dirty' FAT sectors to disk
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_fat_purge(struct fatfs *fs)
|
||||
{
|
||||
struct fat_buffer *pcur = fs->fat_buffer_head;
|
||||
|
||||
// Itterate through sector buffer list
|
||||
while (pcur)
|
||||
{
|
||||
// Writeback sector if changed
|
||||
if (pcur->dirty)
|
||||
if (!fatfs_fat_writeback(fs, pcur))
|
||||
return 0;
|
||||
|
||||
pcur = pcur->next;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// General FAT Table Operations
|
||||
//-----------------------------------------------------------------------------
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_find_next_cluster: Return cluster number of next cluster in chain by
|
||||
// reading FAT table and traversing it. Return 0xffffffff for end of chain.
|
||||
//-----------------------------------------------------------------------------
|
||||
uint32 fatfs_find_next_cluster(struct fatfs *fs, uint32 current_cluster)
|
||||
{
|
||||
uint32 fat_sector_offset, position;
|
||||
uint32 nextcluster;
|
||||
struct fat_buffer *pbuf;
|
||||
|
||||
// Why is '..' labelled with cluster 0 when it should be 2 ??
|
||||
if (current_cluster == 0)
|
||||
current_cluster = 2;
|
||||
|
||||
// Find which sector of FAT table to read
|
||||
if (fs->fat_type == FAT_TYPE_16)
|
||||
fat_sector_offset = current_cluster / 256;
|
||||
else
|
||||
fat_sector_offset = current_cluster / 128;
|
||||
|
||||
// Read FAT sector into buffer
|
||||
pbuf = fatfs_fat_read_sector(fs, fs->fat_begin_lba+fat_sector_offset);
|
||||
if (!pbuf)
|
||||
return (FAT32_LAST_CLUSTER);
|
||||
|
||||
if (fs->fat_type == FAT_TYPE_16)
|
||||
{
|
||||
// Find 32 bit entry of current sector relating to cluster number
|
||||
position = (current_cluster - (fat_sector_offset * 256)) * 2;
|
||||
|
||||
// Read Next Clusters value from Sector Buffer
|
||||
nextcluster = FAT16_GET_16BIT_WORD(pbuf, (uint16)position);
|
||||
|
||||
// If end of chain found
|
||||
if (nextcluster >= 0xFFF8 && nextcluster <= 0xFFFF)
|
||||
return (FAT32_LAST_CLUSTER);
|
||||
}
|
||||
else
|
||||
{
|
||||
// Find 32 bit entry of current sector relating to cluster number
|
||||
position = (current_cluster - (fat_sector_offset * 128)) * 4;
|
||||
|
||||
// Read Next Clusters value from Sector Buffer
|
||||
nextcluster = FAT32_GET_32BIT_WORD(pbuf, (uint16)position);
|
||||
|
||||
// Mask out MS 4 bits (its 28bit addressing)
|
||||
nextcluster = nextcluster & 0x0FFFFFFF;
|
||||
|
||||
// If end of chain found
|
||||
if (nextcluster >= 0x0FFFFFF8 && nextcluster <= 0x0FFFFFFF)
|
||||
return (FAT32_LAST_CLUSTER);
|
||||
}
|
||||
|
||||
// Else return next cluster
|
||||
return (nextcluster);
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_set_fs_info_next_free_cluster: Write the next free cluster to the FSINFO table
|
||||
//-----------------------------------------------------------------------------
|
||||
void fatfs_set_fs_info_next_free_cluster(struct fatfs *fs, uint32 newValue)
|
||||
{
|
||||
if (fs->fat_type == FAT_TYPE_16)
|
||||
;
|
||||
else
|
||||
{
|
||||
// Load sector to change it
|
||||
struct fat_buffer *pbuf = fatfs_fat_read_sector(fs, fs->lba_begin+fs->fs_info_sector);
|
||||
if (!pbuf)
|
||||
return ;
|
||||
|
||||
// Change
|
||||
FAT32_SET_32BIT_WORD(pbuf, 492, newValue);
|
||||
fs->next_free_cluster = newValue;
|
||||
|
||||
// Write back FSINFO sector to disk
|
||||
if (fs->disk_io.write_media)
|
||||
fs->disk_io.write_media(pbuf->address, pbuf->sector, 1);
|
||||
|
||||
// Invalidate cache entry
|
||||
pbuf->address = FAT32_INVALID_CLUSTER;
|
||||
pbuf->dirty = 0;
|
||||
}
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_find_blank_cluster: Find a free cluster entry by reading the FAT
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_INC_WRITE_SUPPORT
|
||||
int fatfs_find_blank_cluster(struct fatfs *fs, uint32 start_cluster, uint32 *free_cluster)
|
||||
{
|
||||
uint32 fat_sector_offset, position;
|
||||
uint32 nextcluster;
|
||||
uint32 current_cluster = start_cluster;
|
||||
struct fat_buffer *pbuf;
|
||||
|
||||
do
|
||||
{
|
||||
// Find which sector of FAT table to read
|
||||
if (fs->fat_type == FAT_TYPE_16)
|
||||
fat_sector_offset = current_cluster / 256;
|
||||
else
|
||||
fat_sector_offset = current_cluster / 128;
|
||||
|
||||
if ( fat_sector_offset < fs->fat_sectors)
|
||||
{
|
||||
// Read FAT sector into buffer
|
||||
pbuf = fatfs_fat_read_sector(fs, fs->fat_begin_lba+fat_sector_offset);
|
||||
if (!pbuf)
|
||||
return 0;
|
||||
|
||||
if (fs->fat_type == FAT_TYPE_16)
|
||||
{
|
||||
// Find 32 bit entry of current sector relating to cluster number
|
||||
position = (current_cluster - (fat_sector_offset * 256)) * 2;
|
||||
|
||||
// Read Next Clusters value from Sector Buffer
|
||||
nextcluster = FAT16_GET_16BIT_WORD(pbuf, (uint16)position);
|
||||
}
|
||||
else
|
||||
{
|
||||
// Find 32 bit entry of current sector relating to cluster number
|
||||
position = (current_cluster - (fat_sector_offset * 128)) * 4;
|
||||
|
||||
// Read Next Clusters value from Sector Buffer
|
||||
nextcluster = FAT32_GET_32BIT_WORD(pbuf, (uint16)position);
|
||||
|
||||
// Mask out MS 4 bits (its 28bit addressing)
|
||||
nextcluster = nextcluster & 0x0FFFFFFF;
|
||||
}
|
||||
|
||||
if (nextcluster !=0 )
|
||||
current_cluster++;
|
||||
}
|
||||
else
|
||||
// Otherwise, run out of FAT sectors to check...
|
||||
return 0;
|
||||
}
|
||||
while (nextcluster != 0x0);
|
||||
|
||||
// Found blank entry
|
||||
*free_cluster = current_cluster;
|
||||
return 1;
|
||||
}
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_fat_set_cluster: Set a cluster link in the chain. NOTE: Immediate
|
||||
// write (slow).
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_INC_WRITE_SUPPORT
|
||||
int fatfs_fat_set_cluster(struct fatfs *fs, uint32 cluster, uint32 next_cluster)
|
||||
{
|
||||
struct fat_buffer *pbuf;
|
||||
uint32 fat_sector_offset, position;
|
||||
|
||||
// Find which sector of FAT table to read
|
||||
if (fs->fat_type == FAT_TYPE_16)
|
||||
fat_sector_offset = cluster / 256;
|
||||
else
|
||||
fat_sector_offset = cluster / 128;
|
||||
|
||||
// Read FAT sector into buffer
|
||||
pbuf = fatfs_fat_read_sector(fs, fs->fat_begin_lba+fat_sector_offset);
|
||||
if (!pbuf)
|
||||
return 0;
|
||||
|
||||
if (fs->fat_type == FAT_TYPE_16)
|
||||
{
|
||||
// Find 16 bit entry of current sector relating to cluster number
|
||||
position = (cluster - (fat_sector_offset * 256)) * 2;
|
||||
|
||||
// Write Next Clusters value to Sector Buffer
|
||||
FAT16_SET_16BIT_WORD(pbuf, (uint16)position, ((uint16)next_cluster));
|
||||
}
|
||||
else
|
||||
{
|
||||
// Find 32 bit entry of current sector relating to cluster number
|
||||
position = (cluster - (fat_sector_offset * 128)) * 4;
|
||||
|
||||
// Write Next Clusters value to Sector Buffer
|
||||
FAT32_SET_32BIT_WORD(pbuf, (uint16)position, next_cluster);
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_free_cluster_chain: Follow a chain marking each element as free
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_INC_WRITE_SUPPORT
|
||||
int fatfs_free_cluster_chain(struct fatfs *fs, uint32 start_cluster)
|
||||
{
|
||||
uint32 last_cluster;
|
||||
uint32 next_cluster = start_cluster;
|
||||
|
||||
// Loop until end of chain
|
||||
while ( (next_cluster != FAT32_LAST_CLUSTER) && (next_cluster != 0x00000000) )
|
||||
{
|
||||
last_cluster = next_cluster;
|
||||
|
||||
// Find next link
|
||||
next_cluster = fatfs_find_next_cluster(fs, next_cluster);
|
||||
|
||||
// Clear last link
|
||||
fatfs_fat_set_cluster(fs, last_cluster, 0x00000000);
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_fat_add_cluster_to_chain: Follow a chain marking and then add a new entry
|
||||
// to the current tail.
|
||||
//-----------------------------------------------------------------------------
|
||||
#if FATFS_INC_WRITE_SUPPORT
|
||||
int fatfs_fat_add_cluster_to_chain(struct fatfs *fs, uint32 start_cluster, uint32 newEntry)
|
||||
{
|
||||
uint32 last_cluster = FAT32_LAST_CLUSTER;
|
||||
uint32 next_cluster = start_cluster;
|
||||
|
||||
if (start_cluster == FAT32_LAST_CLUSTER)
|
||||
return 0;
|
||||
|
||||
// Loop until end of chain
|
||||
while ( next_cluster != FAT32_LAST_CLUSTER )
|
||||
{
|
||||
last_cluster = next_cluster;
|
||||
|
||||
// Find next link
|
||||
next_cluster = fatfs_find_next_cluster(fs, next_cluster);
|
||||
if (!next_cluster)
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Add link in for new cluster
|
||||
fatfs_fat_set_cluster(fs, last_cluster, newEntry);
|
||||
|
||||
// Mark new cluster as end of chain
|
||||
fatfs_fat_set_cluster(fs, newEntry, FAT32_LAST_CLUSTER);
|
||||
|
||||
return 1;
|
||||
}
|
||||
#endif
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_count_free_clusters:
|
||||
//-----------------------------------------------------------------------------
|
||||
uint32 fatfs_count_free_clusters(struct fatfs *fs)
|
||||
{
|
||||
uint32 i,j;
|
||||
uint32 count = 0;
|
||||
struct fat_buffer *pbuf;
|
||||
|
||||
for (i = 0; i < fs->fat_sectors; i++)
|
||||
{
|
||||
// Read FAT sector into buffer
|
||||
pbuf = fatfs_fat_read_sector(fs, fs->fat_begin_lba + i);
|
||||
if (!pbuf)
|
||||
break;
|
||||
|
||||
for (j = 0; j < FAT_SECTOR_SIZE; )
|
||||
{
|
||||
if (fs->fat_type == FAT_TYPE_16)
|
||||
{
|
||||
if (FAT16_GET_16BIT_WORD(pbuf, (uint16)j) == 0)
|
||||
count++;
|
||||
|
||||
j += 2;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (FAT32_GET_32BIT_WORD(pbuf, (uint16)j) == 0)
|
||||
count++;
|
||||
|
||||
j += 4;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return count;
|
||||
}
|
||||
20
ios_fs/source/fat/fat_table.h
Normal file
20
ios_fs/source/fat/fat_table.h
Normal file
@ -0,0 +1,20 @@
|
||||
#ifndef __FAT_TABLE_H__
|
||||
#define __FAT_TABLE_H__
|
||||
|
||||
#include "fat_opts.h"
|
||||
#include "fat_misc.h"
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Prototypes
|
||||
//-----------------------------------------------------------------------------
|
||||
void fatfs_fat_init(struct fatfs *fs);
|
||||
int fatfs_fat_purge(struct fatfs *fs);
|
||||
uint32 fatfs_find_next_cluster(struct fatfs *fs, uint32 current_cluster);
|
||||
void fatfs_set_fs_info_next_free_cluster(struct fatfs *fs, uint32 newValue);
|
||||
int fatfs_find_blank_cluster(struct fatfs *fs, uint32 start_cluster, uint32 *free_cluster);
|
||||
int fatfs_fat_set_cluster(struct fatfs *fs, uint32 cluster, uint32 next_cluster);
|
||||
int fatfs_fat_add_cluster_to_chain(struct fatfs *fs, uint32 start_cluster, uint32 newEntry);
|
||||
int fatfs_free_cluster_chain(struct fatfs *fs, uint32 start_cluster);
|
||||
uint32 fatfs_count_free_clusters(struct fatfs *fs);
|
||||
|
||||
#endif
|
||||
69
ios_fs/source/fat/fat_types.h
Normal file
69
ios_fs/source/fat/fat_types.h
Normal file
@ -0,0 +1,69 @@
|
||||
#ifndef __FAT_TYPES_H__
|
||||
#define __FAT_TYPES_H__
|
||||
|
||||
// Detect 64-bit compilation on GCC
|
||||
#if defined(__GNUC__) && defined(__SIZEOF_LONG__)
|
||||
#if __SIZEOF_LONG__ == 8
|
||||
#define FATFS_DEF_UINT32_AS_INT
|
||||
#endif
|
||||
#endif
|
||||
|
||||
//-------------------------------------------------------------
|
||||
// System specific types
|
||||
//-------------------------------------------------------------
|
||||
#ifndef FATFS_NO_DEF_TYPES
|
||||
typedef unsigned char uint8;
|
||||
typedef unsigned short uint16;
|
||||
|
||||
// If compiling on a 64-bit machine, use int as 32-bits
|
||||
#ifdef FATFS_DEF_UINT32_AS_INT
|
||||
typedef unsigned int uint32;
|
||||
// Else for 32-bit machines & embedded systems, use long...
|
||||
#else
|
||||
typedef unsigned long uint32;
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#ifndef NULL
|
||||
#define NULL 0
|
||||
#endif
|
||||
|
||||
//-------------------------------------------------------------
|
||||
// Endian Macros
|
||||
//-------------------------------------------------------------
|
||||
// FAT is little endian so big endian systems need to swap words
|
||||
|
||||
// Little Endian - No swap required
|
||||
#if FATFS_IS_LITTLE_ENDIAN == 1
|
||||
|
||||
#define FAT_HTONS(n) (n)
|
||||
#define FAT_HTONL(n) (n)
|
||||
|
||||
// Big Endian - Swap required
|
||||
#else
|
||||
|
||||
#define FAT_HTONS(n) ((((uint16)((n) & 0xff)) << 8) | (((n) & 0xff00) >> 8))
|
||||
#define FAT_HTONL(n) (((((uint32)(n) & 0xFF)) << 24) | \
|
||||
((((uint32)(n) & 0xFF00)) << 8) | \
|
||||
((((uint32)(n) & 0xFF0000)) >> 8) | \
|
||||
((((uint32)(n) & 0xFF000000)) >> 24))
|
||||
|
||||
#endif
|
||||
|
||||
//-------------------------------------------------------------
|
||||
// Structure Packing Compile Options
|
||||
//-------------------------------------------------------------
|
||||
#ifdef __GNUC__
|
||||
#define STRUCT_PACK
|
||||
#define STRUCT_PACK_BEGIN
|
||||
#define STRUCT_PACK_END
|
||||
#define STRUCT_PACKED __attribute__ ((packed))
|
||||
#else
|
||||
// Other compilers may require other methods of packing structures
|
||||
#define STRUCT_PACK
|
||||
#define STRUCT_PACK_BEGIN
|
||||
#define STRUCT_PACK_END
|
||||
#define STRUCT_PACKED
|
||||
#endif
|
||||
|
||||
#endif
|
||||
373
ios_fs/source/fat/fat_write.c
Normal file
373
ios_fs/source/fat/fat_write.c
Normal file
@ -0,0 +1,373 @@
|
||||
//-----------------------------------------------------------------------------
|
||||
//-----------------------------------------------------------------------------
|
||||
// FAT16/32 File IO Library
|
||||
// V2.6
|
||||
// Ultra-Embedded.com
|
||||
// Copyright 2003 - 2012
|
||||
//
|
||||
// Email: admin@ultra-embedded.com
|
||||
//
|
||||
// License: GPL
|
||||
// If you would like a version with a more permissive license for use in
|
||||
// closed source commercial applications please contact me for details.
|
||||
//-----------------------------------------------------------------------------
|
||||
//
|
||||
// This file is part of FAT File IO Library.
|
||||
//
|
||||
// FAT File IO Library is free software; you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation; either version 2 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// FAT File IO Library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with FAT File IO Library; if not, write to the Free Software
|
||||
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
//-----------------------------------------------------------------------------
|
||||
//-----------------------------------------------------------------------------
|
||||
#include "../imports.h"
|
||||
#include "fat_defs.h"
|
||||
#include "fat_access.h"
|
||||
#include "fat_table.h"
|
||||
#include "fat_write.h"
|
||||
#include "fat_string.h"
|
||||
#include "fat_misc.h"
|
||||
|
||||
#if FATFS_INC_WRITE_SUPPORT
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_add_free_space: Allocate another cluster of free space to the end
|
||||
// of a files cluster chain.
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_add_free_space(struct fatfs *fs, uint32 *startCluster, uint32 clusters)
|
||||
{
|
||||
uint32 i;
|
||||
uint32 nextcluster;
|
||||
uint32 start = *startCluster;
|
||||
|
||||
// Set the next free cluster hint to unknown
|
||||
if (fs->next_free_cluster != FAT32_LAST_CLUSTER)
|
||||
fatfs_set_fs_info_next_free_cluster(fs, FAT32_LAST_CLUSTER);
|
||||
|
||||
for (i=0;i<clusters;i++)
|
||||
{
|
||||
// Start looking for free clusters from the beginning
|
||||
if (fatfs_find_blank_cluster(fs, fs->rootdir_first_cluster, &nextcluster))
|
||||
{
|
||||
// Point last to this
|
||||
fatfs_fat_set_cluster(fs, start, nextcluster);
|
||||
|
||||
// Point this to end of file
|
||||
fatfs_fat_set_cluster(fs, nextcluster, FAT32_LAST_CLUSTER);
|
||||
|
||||
// Adjust argument reference
|
||||
start = nextcluster;
|
||||
if (i == 0)
|
||||
*startCluster = nextcluster;
|
||||
}
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_allocate_free_space: Add an ammount of free space to a file either from
|
||||
// 'startCluster' if newFile = false, or allocating a new start to the chain if
|
||||
// newFile = true.
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_allocate_free_space(struct fatfs *fs, int newFile, uint32 *startCluster, uint32 size)
|
||||
{
|
||||
uint32 clusterSize;
|
||||
uint32 clusterCount;
|
||||
uint32 nextcluster;
|
||||
|
||||
if (size==0)
|
||||
return 0;
|
||||
|
||||
// Set the next free cluster hint to unknown
|
||||
if (fs->next_free_cluster != FAT32_LAST_CLUSTER)
|
||||
fatfs_set_fs_info_next_free_cluster(fs, FAT32_LAST_CLUSTER);
|
||||
|
||||
// Work out size and clusters
|
||||
clusterSize = fs->sectors_per_cluster * FAT_SECTOR_SIZE;
|
||||
clusterCount = (size / clusterSize);
|
||||
|
||||
// If any left over
|
||||
if (size-(clusterSize*clusterCount))
|
||||
clusterCount++;
|
||||
|
||||
// Allocated first link in the chain if a new file
|
||||
if (newFile)
|
||||
{
|
||||
if (!fatfs_find_blank_cluster(fs, fs->rootdir_first_cluster, &nextcluster))
|
||||
return 0;
|
||||
|
||||
// If this is all that is needed then all done
|
||||
if (clusterCount==1)
|
||||
{
|
||||
fatfs_fat_set_cluster(fs, nextcluster, FAT32_LAST_CLUSTER);
|
||||
*startCluster = nextcluster;
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
// Allocate from end of current chain (startCluster is end of chain)
|
||||
else
|
||||
nextcluster = *startCluster;
|
||||
|
||||
if (!fatfs_add_free_space(fs, &nextcluster, clusterCount))
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_find_free_dir_offset: Find a free space in the directory for a new entry
|
||||
// which takes up 'entryCount' blocks (or allocate some more)
|
||||
//-----------------------------------------------------------------------------
|
||||
static int fatfs_find_free_dir_offset(struct fatfs *fs, uint32 dirCluster, int entryCount, uint32 *pSector, uint8 *pOffset)
|
||||
{
|
||||
struct fat_dir_entry *directoryEntry;
|
||||
uint8 item=0;
|
||||
uint16 recordoffset = 0;
|
||||
uint8 i=0;
|
||||
int x=0;
|
||||
int possible_spaces = 0;
|
||||
int start_recorded = 0;
|
||||
|
||||
// No entries required?
|
||||
if (entryCount == 0)
|
||||
return 0;
|
||||
|
||||
// Main cluster following loop
|
||||
while (1)
|
||||
{
|
||||
// Read sector
|
||||
if (fatfs_sector_reader(fs, dirCluster, x++, 0))
|
||||
{
|
||||
// Analyse Sector
|
||||
for (item = 0; item < FAT_DIR_ENTRIES_PER_SECTOR; item++)
|
||||
{
|
||||
// Create the multiplier for sector access
|
||||
recordoffset = FAT_DIR_ENTRY_SIZE * item;
|
||||
|
||||
// Overlay directory entry over buffer
|
||||
directoryEntry = (struct fat_dir_entry*)(fs->currentsector.sector+recordoffset);
|
||||
|
||||
// LFN Entry
|
||||
if (fatfs_entry_lfn_text(directoryEntry))
|
||||
{
|
||||
// First entry?
|
||||
if (possible_spaces == 0)
|
||||
{
|
||||
// Store start
|
||||
*pSector = x-1;
|
||||
*pOffset = item;
|
||||
start_recorded = 1;
|
||||
}
|
||||
|
||||
// Increment the count in-case the file turns
|
||||
// out to be deleted...
|
||||
possible_spaces++;
|
||||
}
|
||||
// SFN Entry
|
||||
else
|
||||
{
|
||||
// Has file been deleted?
|
||||
if (fs->currentsector.sector[recordoffset] == FILE_HEADER_DELETED)
|
||||
{
|
||||
// First entry?
|
||||
if (possible_spaces == 0)
|
||||
{
|
||||
// Store start
|
||||
*pSector = x-1;
|
||||
*pOffset = item;
|
||||
start_recorded = 1;
|
||||
}
|
||||
|
||||
possible_spaces++;
|
||||
|
||||
// We have found enough space?
|
||||
if (possible_spaces >= entryCount)
|
||||
return 1;
|
||||
|
||||
// Else continue counting until we find a valid entry!
|
||||
}
|
||||
// Is the file entry empty?
|
||||
else if (fs->currentsector.sector[recordoffset] == FILE_HEADER_BLANK)
|
||||
{
|
||||
// First entry?
|
||||
if (possible_spaces == 0)
|
||||
{
|
||||
// Store start
|
||||
*pSector = x-1;
|
||||
*pOffset = item;
|
||||
start_recorded = 1;
|
||||
}
|
||||
|
||||
// Increment the blank entries count
|
||||
possible_spaces++;
|
||||
|
||||
// We have found enough space?
|
||||
if (possible_spaces >= entryCount)
|
||||
return 1;
|
||||
}
|
||||
// File entry is valid
|
||||
else
|
||||
{
|
||||
// Reset all flags
|
||||
possible_spaces = 0;
|
||||
start_recorded = 0;
|
||||
}
|
||||
}
|
||||
} // End of for
|
||||
} // End of if
|
||||
// Run out of free space in the directory, allocate some more
|
||||
else
|
||||
{
|
||||
uint32 newCluster;
|
||||
|
||||
// Get a new cluster for directory
|
||||
if (!fatfs_find_blank_cluster(fs, fs->rootdir_first_cluster, &newCluster))
|
||||
return 0;
|
||||
|
||||
// Add cluster to end of directory tree
|
||||
if (!fatfs_fat_add_cluster_to_chain(fs, dirCluster, newCluster))
|
||||
return 0;
|
||||
|
||||
// Erase new directory cluster
|
||||
memset(fs->currentsector.sector, 0x00, FAT_SECTOR_SIZE);
|
||||
for (i=0;i<fs->sectors_per_cluster;i++)
|
||||
{
|
||||
if (!fatfs_write_sector(fs, newCluster, i, 0))
|
||||
return 0;
|
||||
}
|
||||
|
||||
// If non of the name fitted on previous sectors
|
||||
if (!start_recorded)
|
||||
{
|
||||
// Store start
|
||||
*pSector = (x-1);
|
||||
*pOffset = 0;
|
||||
start_recorded = 1;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
} // End of while loop
|
||||
|
||||
return 0;
|
||||
}
|
||||
//-----------------------------------------------------------------------------
|
||||
// fatfs_add_file_entry: Add a directory entry to a location found by FindFreeOffset
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_add_file_entry(struct fatfs *fs, uint32 dirCluster, char *filename, char *shortfilename, uint32 startCluster, uint32 size, int dir)
|
||||
{
|
||||
uint8 item=0;
|
||||
uint16 recordoffset = 0;
|
||||
uint8 i=0;
|
||||
uint32 x=0;
|
||||
int entryCount;
|
||||
struct fat_dir_entry shortEntry;
|
||||
int dirtySector = 0;
|
||||
|
||||
uint32 dirSector = 0;
|
||||
uint8 dirOffset = 0;
|
||||
int foundEnd = 0;
|
||||
|
||||
uint8 checksum;
|
||||
uint8 *pSname;
|
||||
|
||||
// No write access?
|
||||
if (!fs->disk_io.write_media)
|
||||
return 0;
|
||||
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
// How many LFN entries are required?
|
||||
// NOTE: We always request one LFN even if it would fit in a SFN!
|
||||
entryCount = fatfs_lfn_entries_required(filename);
|
||||
if (!entryCount)
|
||||
return 0;
|
||||
#else
|
||||
entryCount = 0;
|
||||
#endif
|
||||
|
||||
// Find space in the directory for this filename (or allocate some more)
|
||||
// NOTE: We need to find space for at least the LFN + SFN (or just the SFN if LFNs not supported).
|
||||
if (!fatfs_find_free_dir_offset(fs, dirCluster, entryCount + 1, &dirSector, &dirOffset))
|
||||
return 0;
|
||||
|
||||
// Generate checksum of short filename
|
||||
pSname = (uint8*)shortfilename;
|
||||
checksum = 0;
|
||||
for (i=11; i!=0; i--) checksum = ((checksum & 1) ? 0x80 : 0) + (checksum >> 1) + *pSname++;
|
||||
|
||||
// Start from current sector where space was found!
|
||||
x = dirSector;
|
||||
|
||||
// Main cluster following loop
|
||||
while (1)
|
||||
{
|
||||
// Read sector
|
||||
if (fatfs_sector_reader(fs, dirCluster, x++, 0))
|
||||
{
|
||||
// Analyse Sector
|
||||
for (item = 0; item < FAT_DIR_ENTRIES_PER_SECTOR; item++)
|
||||
{
|
||||
// Create the multiplier for sector access
|
||||
recordoffset = FAT_DIR_ENTRY_SIZE * item;
|
||||
|
||||
// If the start position for the entry has been found
|
||||
if (foundEnd==0)
|
||||
if ( (dirSector==(x-1)) && (dirOffset==item) )
|
||||
foundEnd = 1;
|
||||
|
||||
// Start adding filename
|
||||
if (foundEnd)
|
||||
{
|
||||
if (entryCount==0)
|
||||
{
|
||||
// Short filename
|
||||
fatfs_sfn_create_entry(shortfilename, size, startCluster, &shortEntry, dir);
|
||||
|
||||
#if FATFS_INC_TIME_DATE_SUPPORT
|
||||
// Update create, access & modify time & date
|
||||
fatfs_update_timestamps(&shortEntry, 1, 1, 1);
|
||||
#endif
|
||||
|
||||
memcpy(&fs->currentsector.sector[recordoffset], &shortEntry, sizeof(shortEntry));
|
||||
|
||||
// Writeback
|
||||
return fs->disk_io.write_media(fs->currentsector.address, fs->currentsector.sector, 1);
|
||||
}
|
||||
#if FATFS_INC_LFN_SUPPORT
|
||||
else
|
||||
{
|
||||
entryCount--;
|
||||
|
||||
// Copy entry to directory buffer
|
||||
fatfs_filename_to_lfn(filename, &fs->currentsector.sector[recordoffset], entryCount, checksum);
|
||||
dirtySector = 1;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
} // End of if
|
||||
|
||||
// Write back to disk before loading another sector
|
||||
if (dirtySector)
|
||||
{
|
||||
if (!fs->disk_io.write_media(fs->currentsector.address, fs->currentsector.sector, 1))
|
||||
return 0;
|
||||
|
||||
dirtySector = 0;
|
||||
}
|
||||
}
|
||||
else
|
||||
return 0;
|
||||
} // End of while loop
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
14
ios_fs/source/fat/fat_write.h
Normal file
14
ios_fs/source/fat/fat_write.h
Normal file
@ -0,0 +1,14 @@
|
||||
#ifndef __FAT_WRITE_H__
|
||||
#define __FAT_WRITE_H__
|
||||
|
||||
#include "fat_defs.h"
|
||||
#include "fat_opts.h"
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
// Prototypes
|
||||
//-----------------------------------------------------------------------------
|
||||
int fatfs_add_file_entry(struct fatfs *fs, uint32 dirCluster, char *filename, char *shortfilename, uint32 startCluster, uint32 size, int dir);
|
||||
int fatfs_add_free_space(struct fatfs *fs, uint32 *startCluster, uint32 clusters);
|
||||
int fatfs_allocate_free_space(struct fatfs *fs, int newFile, uint32 *startCluster, uint32 size);
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user