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| 1 | /* |
1 | /* |
| 2 | * Copyright (c) 2007 Jakub Jermar |
2 | * Copyright (c) 2007 Jakub Jermar |
| 3 | * All rights reserved. |
3 | * All rights reserved. |
| 4 | * |
4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
7 | * are met: |
| 8 | * |
8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
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 |
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. |
15 | * derived from this software without specific prior written permission. |
| 16 | * |
16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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 |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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 |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 |
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. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
27 | */ |
| 28 | 28 | ||
| 29 | /** @addtogroup fs |
29 | /** @addtogroup fs |
| 30 | * @{ |
30 | * @{ |
| 31 | */ |
31 | */ |
| 32 | 32 | ||
| 33 | #ifndef FAT_FAT_H_ |
33 | #ifndef FAT_FAT_H_ |
| 34 | #define FAT_FAT_H_ |
34 | #define FAT_FAT_H_ |
| 35 | 35 | ||
| 36 | #include <ipc/ipc.h> |
36 | #include <ipc/ipc.h> |
| 37 | #include <atomic.h> |
37 | #include <atomic.h> |
| 38 | #include <sys/types.h> |
38 | #include <sys/types.h> |
| 39 | #include <bool.h> |
39 | #include <bool.h> |
| 40 | 40 | ||
| 41 | #define dprintf(...) printf(__VA_ARGS__) |
41 | #define dprintf(...) printf(__VA_ARGS__) |
| 42 | 42 | ||
| - | 43 | typedef struct { |
|
| - | 44 | uint8_t ji[3]; /**< Jump instruction. */ |
|
| - | 45 | uint8_t oem_name[8]; |
|
| - | 46 | /* BIOS Parameter Block */ |
|
| - | 47 | uint16_t bps; /**< Bytes per sector. */ |
|
| - | 48 | uint8_t spc; /**< Sectors per cluster. */ |
|
| - | 49 | uint16_t rsc; /**< Reserved sector count. */ |
|
| - | 50 | uint8_t fatcnt; /**< Number of FATs. */ |
|
| - | 51 | uint16_t root_ent_max; /**< Maximum number of root directory |
|
| - | 52 | entries. */ |
|
| - | 53 | uint16_t totsec; /**< Total sectors. */ |
|
| - | 54 | uint8_t mdesc; /**< Media descriptor. */ |
|
| - | 55 | uint16_t sec_per_fat; /**< Sectors per FAT12/FAT16. */ |
|
| - | 56 | uint16_t sec_per_track; /**< Sectors per track. */ |
|
| - | 57 | uint16_t headcnt; /**< Number of heads. */ |
|
| - | 58 | uint32_t hidden_sec; /**< Hidden sectors. */ |
|
| - | 59 | uint32_t total_sec; /**< Total sectors. */ |
|
| - | 60 | ||
| - | 61 | union { |
|
| - | 62 | struct { |
|
| - | 63 | /* FAT12/FAT16 only: Extended BIOS Parameter Block */ |
|
| - | 64 | /** Physical drive number. */ |
|
| - | 65 | uint8_t pdn; |
|
| - | 66 | uint8_t reserved; |
|
| - | 67 | /** Extended boot signature. */ |
|
| - | 68 | uint8_t ebs; |
|
| - | 69 | /** Serial number. */ |
|
| - | 70 | uint32_t id; |
|
| - | 71 | /** Volume label. */ |
|
| - | 72 | uint8_t label[11]; |
|
| - | 73 | /** FAT type. */ |
|
| - | 74 | uint8_t type[8]; |
|
| - | 75 | /** Boot code. */ |
|
| - | 76 | uint8_t boot_code[448]; |
|
| - | 77 | /** Boot sector signature. */ |
|
| - | 78 | uint16_t signature; |
|
| - | 79 | } __attribute__ ((packed)); |
|
| - | 80 | struct { |
|
| - | 81 | /* FAT32 only */ |
|
| - | 82 | /** Sectors per FAT. */ |
|
| - | 83 | uint32_t sectors_per_fat; |
|
| - | 84 | /** FAT flags. */ |
|
| - | 85 | uint16_t flags; |
|
| - | 86 | /** Version. */ |
|
| - | 87 | uint16_t version; |
|
| - | 88 | /** Cluster number of root directory. */ |
|
| - | 89 | uint32_t root_cluster; |
|
| - | 90 | /** Sector number of file system information sector. */ |
|
| - | 91 | uint16_t fsinfo_sec; |
|
| - | 92 | /** Sector number of boot sector copy. */ |
|
| - | 93 | uint16_t bscopy_sec; |
|
| - | 94 | uint8_t reserved1[12]; |
|
| - | 95 | /** Physical drive number. */ |
|
| - | 96 | uint8_t pdn; |
|
| - | 97 | uint8_t reserved2; |
|
| - | 98 | /** Extended boot signature. */ |
|
| - | 99 | uint8_t ebs; |
|
| - | 100 | /** Serial number. */ |
|
| - | 101 | uint32_t id; |
|
| - | 102 | /** Volume label. */ |
|
| - | 103 | uint8_t label; |
|
| - | 104 | /** FAT type. */ |
|
| - | 105 | uint8_t type[8]; |
|
| - | 106 | /** Boot code. */ |
|
| - | 107 | uint8_t boot_code[420]; |
|
| - | 108 | /** Signature. */ |
|
| - | 109 | uint16_t signature; |
|
| - | 110 | } __attribute__ ((packed)); |
|
| - | 111 | }; |
|
| - | 112 | } fat_bs_t __attribute__ ((packed)); |
|
| - | 113 | ||
| 43 | extern uint8_t *plb_ro; |
114 | extern uint8_t *plb_ro; |
| 44 | 115 | ||
| 45 | extern int block_read(int, unsigned long, void *); |
116 | extern int block_read(int, unsigned long, void *); |
| 46 | 117 | ||
| 47 | extern void fat_lookup(ipc_callid_t, ipc_call_t *); |
118 | extern void fat_lookup(ipc_callid_t, ipc_call_t *); |
| 48 | 119 | ||
| 49 | #endif |
120 | #endif |
| 50 | 121 | ||
| 51 | /** |
122 | /** |
| 52 | * @} |
123 | * @} |
| 53 | */ |
124 | */ |
| 54 | 125 | ||