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  1. /*
  2.  * Copyright (c) 2008 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup fs
  30.  * @{
  31.  */
  32.  
  33. #ifndef FAT_FAT_DENTRY_H_
  34. #define FAT_FAT_DENTRY_H_
  35.  
  36. #include <stdint.h>
  37. #include <bool.h>
  38.  
  39. #define FAT_NAME_LEN        8
  40. #define FAT_EXT_LEN     3
  41.  
  42. #define FAT_NAME_DOT        ".       "
  43. #define FAT_NAME_DOT_DOT    "..      "
  44. #define FAT_EXT_PAD     "   "
  45.  
  46. #define FAT_ATTR_RDONLY     (1 << 0)
  47. #define FAT_ATTR_VOLLABEL   (1 << 3)
  48. #define FAT_ATTR_SUBDIR     (1 << 4)
  49.  
  50. #define FAT_LCASE_LOWER_NAME    0x08
  51. #define FAT_LCASE_LOWER_EXT 0x10
  52.  
  53. #define FAT_PAD         ' '
  54.  
  55. #define FAT_DENTRY_UNUSED   0x00
  56. #define FAT_DENTRY_E5_ESC   0x05
  57. #define FAT_DENTRY_DOT      0x2e
  58. #define FAT_DENTRY_ERASED   0xe5
  59.  
  60. typedef enum {
  61.     FAT_DENTRY_SKIP,
  62.     FAT_DENTRY_LAST,
  63.     FAT_DENTRY_FREE,
  64.     FAT_DENTRY_VALID
  65. } fat_dentry_clsf_t;
  66.  
  67. typedef struct {
  68.     uint8_t     name[8];
  69.     uint8_t     ext[3];
  70.     uint8_t     attr;
  71.     uint8_t     lcase;
  72.     uint8_t     ctime_fine;
  73.     uint16_t    ctime;
  74.     uint16_t    cdate;
  75.     uint16_t    adate;
  76.     union {
  77.         uint16_t    eaidx;      /* FAT12/FAT16 */
  78.         uint16_t    firstc_hi;  /* FAT32 */
  79.     } __attribute__ ((packed));
  80.     uint16_t    mtime;
  81.     uint16_t    mdate;
  82.     union {
  83.         uint16_t    firstc;     /* FAT12/FAT16 */
  84.         uint16_t    firstc_lo;  /* FAT32 */
  85.     } __attribute__ ((packed));
  86.     uint32_t    size;
  87. } __attribute__ ((packed)) fat_dentry_t;
  88.  
  89. extern int fat_dentry_namecmp(char *, const char *);
  90. extern bool fat_dentry_name_verify(const char *);
  91. extern void fat_dentry_name_get(const fat_dentry_t *, char *);
  92. extern void fat_dentry_name_set(fat_dentry_t *, const char *);
  93. extern fat_dentry_clsf_t fat_classify_dentry(const fat_dentry_t *);
  94.  
  95. #endif
  96.  
  97. /**
  98.  * @}
  99.  */
  100.