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