source: mainline/uspace/srv/fs/fat/fat_dentry.h@ 2df7fdd4

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 2df7fdd4 was 2df7fdd4, checked in by Oleg Romanenko <romanenko.oleg@…>, 14 years ago

Long entry struct and DENTRY_XXX flags
  • Property mode set to 100644
File size: 3.4 KB
Line 
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 0x01
47#define FAT_ATTR_HIDDEN 0x02
48#define FAT_ATTR_SYSTEM 0x04
49#define FAT_ATTR_VOLLABEL 0x08
50#define FAT_ATTR_SUBDIR 0x10
51#define FAT_ATTR_ARCHIVE 0x20
52#define FAT_ATTR_LNAME \
53 (FAT_ATTR_RDONLY | FAT_ATTR_HIDDEN | FAT_ATTR_SYSTEM | FAT_ATTR_VOLLABEL)
54
55#define FAT_LCASE_LOWER_NAME 0x08
56#define FAT_LCASE_LOWER_EXT 0x10
57
58#define FAT_PAD ' '
59
60#define FAT_DENTRY_UNUSED 0x00
61#define FAT_DENTRY_E5_ESC 0x05
62#define FAT_DENTRY_DOT 0x2e
63#define FAT_DENTRY_ERASED 0xe5
64#define FAT_LAST_LONG_ENTRY 0x40
65
66typedef enum {
67 FAT_DENTRY_SKIP,
68 FAT_DENTRY_LAST,
69 FAT_DENTRY_FREE,
70 FAT_DENTRY_VALID
71} fat_dentry_clsf_t;
72
73typedef struct {
74 union {
75 struct {
76 uint8_t name[8];
77 uint8_t ext[3];
78 uint8_t attr;
79 uint8_t lcase;
80 uint8_t ctime_fine;
81 uint16_t ctime;
82 uint16_t cdate;
83 uint16_t adate;
84 union {
85 uint16_t eaidx; /* FAT12/FAT16 */
86 uint16_t firstc_hi; /* FAT32 */
87 } __attribute__ ((packed));
88 uint16_t mtime;
89 uint16_t mdate;
90 union {
91 uint16_t firstc; /* FAT12/FAT16 */
92 uint16_t firstc_lo; /* FAT32 */
93 } __attribute__ ((packed));
94 uint32_t size;
95 } __attribute__ ((packed));
96 struct {
97 uint8_t order;
98 uint8_t name1[10];
99 uint8_t attr;
100 uint8_t type;
101 uint8_t check_sum;
102 uint8_t name2[12];
103 uint16_t firstc_lo; /* MUST be 0 */
104 uint8_t name3[4];
105 } long_entry __attribute__ ((packed));
106 };
107} __attribute__ ((packed)) fat_dentry_t;
108
109extern int fat_dentry_namecmp(char *, const char *);
110extern bool fat_dentry_name_verify(const char *);
111extern void fat_dentry_name_get(const fat_dentry_t *, char *);
112extern void fat_dentry_name_set(fat_dentry_t *, const char *);
113extern fat_dentry_clsf_t fat_classify_dentry(const fat_dentry_t *);
114
115#endif
116
117/**
118 * @}
119 */
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