0,0 → 1,145 |
/* |
* Copyright (c) 2007 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
/** @addtogroup fs |
* @{ |
*/ |
|
#ifndef FAT_FAT_H_ |
#define FAT_FAT_H_ |
|
#include <ipc/ipc.h> |
#include <libfs.h> |
#include <atomic.h> |
#include <sys/types.h> |
#include <bool.h> |
|
#define dprintf(...) printf(__VA_ARGS__) |
|
typedef struct { |
uint8_t ji[3]; /**< Jump instruction. */ |
uint8_t oem_name[8]; |
/* BIOS Parameter Block */ |
uint16_t bps; /**< Bytes per sector. */ |
uint8_t spc; /**< Sectors per cluster. */ |
uint16_t rsc; /**< Reserved sector count. */ |
uint8_t fatcnt; /**< Number of FATs. */ |
uint16_t root_ent_max; /**< Maximum number of root directory |
entries. */ |
uint16_t totsec; /**< Total sectors. */ |
uint8_t mdesc; /**< Media descriptor. */ |
uint16_t sec_per_fat; /**< Sectors per FAT12/FAT16. */ |
uint16_t sec_per_track; /**< Sectors per track. */ |
uint16_t headcnt; /**< Number of heads. */ |
uint32_t hidden_sec; /**< Hidden sectors. */ |
uint32_t total_sec; /**< Total sectors. */ |
|
union { |
struct { |
/* FAT12/FAT16 only: Extended BIOS Parameter Block */ |
/** Physical drive number. */ |
uint8_t pdn; |
uint8_t reserved; |
/** Extended boot signature. */ |
uint8_t ebs; |
/** Serial number. */ |
uint32_t id; |
/** Volume label. */ |
uint8_t label[11]; |
/** FAT type. */ |
uint8_t type[8]; |
/** Boot code. */ |
uint8_t boot_code[448]; |
/** Boot sector signature. */ |
uint16_t signature; |
} __attribute__ ((packed)); |
struct { |
/* FAT32 only */ |
/** Sectors per FAT. */ |
uint32_t sectors_per_fat; |
/** FAT flags. */ |
uint16_t flags; |
/** Version. */ |
uint16_t version; |
/** Cluster number of root directory. */ |
uint32_t root_cluster; |
/** Sector number of file system information sector. */ |
uint16_t fsinfo_sec; |
/** Sector number of boot sector copy. */ |
uint16_t bscopy_sec; |
uint8_t reserved1[12]; |
/** Physical drive number. */ |
uint8_t pdn; |
uint8_t reserved2; |
/** Extended boot signature. */ |
uint8_t ebs; |
/** Serial number. */ |
uint32_t id; |
/** Volume label. */ |
uint8_t label; |
/** FAT type. */ |
uint8_t type[8]; |
/** Boot code. */ |
uint8_t boot_code[420]; |
/** Signature. */ |
uint16_t signature; |
} __attribute__ ((packed)); |
}; |
} __attribute__ ((packed)) fat_bs_t; |
|
typedef struct { |
uint8_t name[8]; |
uint8_t ext[3]; |
uint8_t attr; |
uint8_t reserved; |
uint8_t ctime_fine; |
uint16_t ctime; |
uint16_t cdate; |
uint16_t adate; |
union { |
uint16_t eaidx; /* FAT12/FAT16 */ |
uint16_t firstc_hi; /* FAT32 */ |
}; |
uint16_t mtime; |
uint16_t mdate; |
union { |
uint16_t firstc; /* FAT12/FAT16 */ |
uint16_t firstc_lo; /* FAT32 */ |
}; |
uint32_t size; |
} __attribute__ ((packed)) fat_dentry_t; |
|
extern fs_reg_t fat_reg; |
|
extern void fat_lookup(ipc_callid_t, ipc_call_t *); |
|
#endif |
|
/** |
* @} |
*/ |