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3504 jermar 1
/*
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 * Copyright (c) 2008 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup fs
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 * @{
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 */
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#ifndef FAT_FAT_DENTRY_H_
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#define FAT_FAT_DENTRY_H_
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#include <stdint.h>
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#include <bool.h>
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#define FAT_NAME_LEN        8
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#define FAT_EXT_LEN     3
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#define FAT_NAME_DOT        ".       "
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#define FAT_NAME_DOT_DOT    "..      "
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#define FAT_EXT_PAD     "   "
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#define FAT_ATTR_RDONLY     (1 << 0)
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#define FAT_ATTR_VOLLABEL   (1 << 3)
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#define FAT_ATTR_SUBDIR     (1 << 4)
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#define FAT_LCASE_LOWER_NAME    0x08
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#define FAT_LCASE_LOWER_EXT 0x10
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#define FAT_PAD         ' ' 
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#define FAT_DENTRY_UNUSED   0x00
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#define FAT_DENTRY_E5_ESC   0x05
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#define FAT_DENTRY_DOT      0x2e
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#define FAT_DENTRY_ERASED   0xe5
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typedef enum {
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    FAT_DENTRY_SKIP,
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    FAT_DENTRY_LAST,
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    FAT_DENTRY_FREE,
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    FAT_DENTRY_VALID
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} fat_dentry_clsf_t;
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typedef struct {
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    uint8_t     name[8];
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    uint8_t     ext[3];
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    uint8_t     attr;
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    uint8_t     lcase;
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    uint8_t     ctime_fine;
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    uint16_t    ctime;
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    uint16_t    cdate;
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    uint16_t    adate;
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    union {
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        uint16_t    eaidx;      /* FAT12/FAT16 */
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        uint16_t    firstc_hi;  /* FAT32 */
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    } __attribute__ ((packed));
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    uint16_t    mtime;
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    uint16_t    mdate;
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    union {
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        uint16_t    firstc;     /* FAT12/FAT16 */
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        uint16_t    firstc_lo;  /* FAT32 */
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    } __attribute__ ((packed));
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    uint32_t    size;
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} __attribute__ ((packed)) fat_dentry_t;
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extern int fat_dentry_namecmp(char *, const char *);
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extern bool fat_dentry_name_verify(const char *);
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extern void fat_dentry_name_get(const fat_dentry_t *, char *);
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extern void fat_dentry_name_set(fat_dentry_t *, const char *);
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extern fat_dentry_clsf_t fat_classify_dentry(const fat_dentry_t *);
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#endif
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/**
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 * @}
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 */