2 * Copyright © 2013 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
25 #define AO_FAT_FILE_REGULAR 0x00
26 #define AO_FAT_FILE_READ_ONLY 0x01
27 #define AO_FAT_FILE_HIDDEN 0x02
28 #define AO_FAT_FILE_SYSTEM 0x04
29 #define AO_FAT_FILE_VOLUME_LABEL 0x08
30 #define AO_FAT_FILE_DIRECTORY 0x10
31 #define AO_FAT_FILE_ARCHIVE 0x20
33 #define AO_FAT_DENT_EMPTY 0xe5
34 #define AO_FAT_DENT_END 0x00
36 #define AO_FAT_IS_FILE(attr) (((attr) & (AO_FAT_FILE_VOLUME_LABEL|AO_FAT_FILE_DIRECTORY)) == 0)
37 #define AO_FAT_IS_DIR(attr) (((attr) & (AO_FAT_FILE_DIRECTORY|AO_FAT_FILE_VOLUME_LABEL)) == AO_FAT_FILE_DIRECTORY)
40 #define AO_FAT_SUCCESS 0
41 #define AO_FAT_EPERM 1
42 #define AO_FAT_ENOENT 2
44 #define AO_FAT_EBADF 9
45 #define AO_FAT_EACCESS 13
46 #define AO_FAT_EEXIST 17
47 #define AO_FAT_ENOTDIR 20
48 #define AO_FAT_EISDIR 21
49 #define AO_FAT_EMFILE 24
50 #define AO_FAT_EFBIG 27
51 #define AO_FAT_ENOSPC 28
52 #define AO_FAT_EDIREOF 29
54 /* ao_fat_setup return values */
55 #define AO_FAT_FILESYSTEM_SUCCESS 0
56 #define AO_FAT_FILESYSTEM_MBR_READ_FAILURE 1
57 #define AO_FAT_FILESYSTEM_INVALID_MBR_SIGNATURE 2
58 #define AO_FAT_FILESYSTEM_INVALID_PARTITION_TYPE 3
59 #define AO_FAT_FILESYSTEM_ZERO_SIZED_PARTITION 4
61 #define AO_FAT_FILESYSTEM_BOOT_READ_FAILURE 5
62 #define AO_FAT_FILESYSTEM_INVALID_BOOT_SIGNATURE 6
63 #define AO_FAT_FILESYSTEM_INVALID_SECTOR_SIZE 7
75 ao_fat_open(char name[11], uint8_t mode);
77 #define AO_FAT_OPEN_READ 0
78 #define AO_FAT_OPEN_WRITE 1
79 #define AO_FAT_OPEN_RW 2
82 ao_fat_creat(char name[11]);
85 ao_fat_close(int8_t fd);
88 ao_fat_read(int8_t fd, void *dest, int len);
91 ao_fat_write(int8_t fd, void *src, int len);
93 #define AO_FAT_SEEK_SET 0
94 #define AO_FAT_SEEK_CUR 1
95 #define AO_FAT_SEEK_END 2
98 ao_fat_seek(int8_t fd, int32_t pos, uint8_t whence);
101 ao_fat_unlink(char name[11]);
104 ao_fat_rename(char old[11], char new[11]);
107 * Byte offset within a file. Supports files up to 2GB in size
109 typedef int32_t ao_fat_offset_t;
112 * Cluster index in partition data space
114 typedef uint32_t ao_fat_cluster_t;
117 * Sector offset within partition
119 typedef uint32_t ao_fat_sector_t;
122 * Index within the root directory
124 typedef uint16_t ao_fat_dirent_t;
127 * Offset within a cluster (or sector)
129 typedef uint16_t ao_fat_cluster_offset_t;
131 struct ao_fat_dirent {
135 ao_fat_cluster_t cluster;
140 ao_fat_readdir(uint16_t *entry, struct ao_fat_dirent *dirent);
142 #endif /* _AO_FAT_H_ */