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| 1 | #ifndef __fat16_h |
1 | #ifndef __fat16_h |
| 2 | #define __fat16_h |
2 | #define __fat16_h |
| 3 | 3 | ||
| - | 4 | ||
| 4 | 5 | ||
| 5 | //________________________________________________________________________________________________________________________________________ |
6 | //________________________________________________________________________________________________________________________________________ |
| 6 | // |
7 | // |
| 7 | // Definitions |
8 | // Userspecific definitions |
| 8 | // |
9 | // |
| 9 | //________________________________________________________________________________________________________________________________________ |
10 | //________________________________________________________________________________________________________________________________________ |
| 10 | - | ||
| 11 | //#define __USE_TIME_DATE_ATTRIBUTE |
11 | |
| - | 12 | #define __MAX_FILES_USED 1 // The number of files that can be opened simultaneously. |
|
| - | 13 | ||
| - | 14 | ||
| 12 | #define __MAX_FILES_USED 2 // The number of files that can accessed simultaneously. |
15 | //________________________________________________________________________________________________________________________________________ |
| - | 16 | // |
|
| - | 17 | // Structure of a filepointer |
|
| - | 18 | // |
|
| 13 | 19 | //________________________________________________________________________________________________________________________________________ |
|
| 14 | #define MBR_SECTOR 0 // the masterboot record is located in sector 0. |
20 | |
| 15 | #define _UNUSED 1 // Bits used in the attribute of an directory entry. |
21 | #define _UNUSED 1 // Bits used in the attribute of an directory entry. |
| 16 | #define _USED 2 |
22 | #define _USED 2 |
| 17 | #define _ARCHIVE 2 |
23 | #define _ARCHIVE 2 |
| 18 | #define _READ_ONLY 4 |
24 | #define _READ_ONLY 4 |
| 19 | #define _SYSTEM 8 |
25 | #define _SYSTEM 8 |
| 20 | #define _DIRECTORY 16 |
26 | #define _DIRECTORY 16 |
| 21 | #define _FILE 32 |
27 | #define _FILE 32 |
| 22 | 28 | ||
| - | 29 | ||
| - | 30 | typedef struct afile |
|
| - | 31 | { |
|
| - | 32 | u32 start_cluster; // Sectorpointer to the first sector of the first datacluster of the file. |
|
| - | 33 | u32 cluster_pointer; // Pointer to the cluster which is edited at the moment. |
|
| - | 34 | u8 sector_index; // The sector which is edited at the moment (cluster_pointer + sector_index). |
|
| - | 35 | u16 byte_index; // The bytelocation within the current sector (cluster_pointer + sector_index + byte_index). |
|
| - | 36 | u8 mode; // mode of fileoperation (read,write) |
|
| - | 37 | u32 filesize; // the size of the opend file in bytes. |
|
| - | 38 | u32 fileposition; // pointer to a character within the file 0 < fileposition < filesize |
|
| - | 39 | u32 sector_in_buffer; // the last sector read, wich is still in the sectorbuffer. |
|
| - | 40 | u32 directory_root_sector; // pointer to the root of the |
|
| - | 41 | u32 directory_sector; // the sectorposition where the directoryentry has been made. |
|
| - | 42 | u8 directory_index; // the index to the directoryentry within the specified sector. |
|
| - | 43 | u8 attribute; // the attribute of the file opened. |
|
| - | 44 | u8 buffer[512]; // Buffer for read and write operation from or to the mmc. |
|
| - | 45 | u8 state; // state of the filepointer (used/unused/...) |
|
| - | 46 | } File; |
|
| - | 47 | ||
| - | 48 | ||
| - | 49 | typedef enum |
|
| - | 50 | { |
|
| - | 51 | NOT_INITIALIZED, |
|
| - | 52 | INITIALIZED |
|
| 23 | 53 | }Fat16_VolumeState_t; |
|
| 24 | 54 | ||
| 25 | //________________________________________________________________________________________________________________________________________ |
55 | //________________________________________________________________________________________________________________________________________ |
| 26 | // |
56 | // |
| 27 | // Structure of a filepointer |
57 | // Structure of an item to find within the cwd |
| 28 | // |
58 | // |
| 29 | //________________________________________________________________________________________________________________________________________ |
59 | //________________________________________________________________________________________________________________________________________ |
| 30 | 60 | ||
| 31 | typedef struct afile |
61 | struct volume |
| 32 | { |
- | |
| 33 | u32 start_cluster; // Sectorpointer to the first sector of the first datacluster of the file. |
- | |
| 34 | u32 cluster_pointer; // Pointer to the cluster which is edited at the moment. |
- | |
| 35 | u8 sector_index; // The sector which is edited at the moment (cluster_pointer + sector_index). |
- | |
| 36 | u16 byte_index; // The bytelocation within the current sector (cluster_pointer + sector_index + byte_index). |
- | |
| 37 | u8 mode; // mode of fileoperation (read,write) |
- | |
| 38 | u32 filesize; // the size of the opend file in bytes. |
- | |
| 39 | u32 fileposition; // pointer to a character within the file 0 < fileposition < filesize |
- | |
| 40 | u32 sector_in_buffer; // the last sector read, wich is still in the sectorbuffer. |
- | |
| 41 | u32 directory_sector; // the sectorposition where the directoryentry has been made. |
- | |
| 42 | u8 directory_index; // the index to the directoryentry within the specified sector. |
62 | { |
| 43 | u8 attribute; // the attribute of the file opened. |
- | |
| 44 | u8 buffer[512]; // Buffer for read and write operation from or to the mmc. |
- | |
| 45 | u8 state; // state of the filepointer (used/unused/...) |
63 | Fat16_VolumeState_t state; // state of the volume |
| 46 | } File; |
64 | } str_Volume; |
| 47 | 65 | ||
| 48 | //________________________________________________________________________________________________________________________________________ |
66 | //________________________________________________________________________________________________________________________________________ |
| 49 | // |
67 | // |
| 50 | // Structure of an directoryentry |
68 | // Structure of an item to find within the cwd |
| 51 | // |
69 | // |
| 52 | //________________________________________________________________________________________________________________________________________ |
70 | //________________________________________________________________________________________________________________________________________ |
| - | 71 | ||
| - | 72 | typedef struct find |
|
| - | 73 | { |
|
| - | 74 | s8 name[12]; // filename + extension or directoryname of the item found within the cwd. |
|
| - | 75 | s8 searchstring[13]; |
|
| - | 76 | u32 cluster_pointer; // Sectorpointer to the sector of the item searched within the cwd. |
|
| - | 77 | u16 startcluster; // pointer to the first datacluster of the item found in the cwd. |
|
| - | 78 | u32 filesize; // the size of the opend file in bytes. |
|
| - | 79 | u32 directory_sector; // the sector within the actual cluster where the directoryentry was found. |
|
| - | 80 | u8 directory_index; // the index to the directoryentry within the specified sector. |
|
| - | 81 | u8 attribute; // the attribute of the file opened. |
|
| - | 82 | } Find; |
|
| - | 83 | ||
| - | 84 | //________________________________________________________________________________________________________________________________________ |
|
| - | 85 | // |
|
| - | 86 | // Directoryentries |
|
| - | 87 | // |
|
| - | 88 | //________________________________________________________________________________________________________________________________________ |
|
| - | 89 | ||
| - | 90 | ||
| 53 | 91 | ||
| 54 | struct DirEntry |
92 | struct DirEntry |
| 55 | { |
93 | { |
| 56 | u8 name[8]; // 8 bytes name. |
94 | u8 name[8]; // 8 bytes name. |
| 57 | u8 extension[3]; // 3 bytes extension. |
95 | u8 extension[3]; // 3 bytes extension. |
| 58 | u8 attribute; // attribute of the directory entry (unused,archive,read-only,system,directory,volume) |
96 | u8 attribute; // attribute of the directory entry (unused,archive,read-only,system,directory,volume) |
| 59 | u8 reserved[10]; // reserved bytes within the directory entry. |
97 | u8 reserved[10]; // reserved bytes within the directory entry. |
| 60 | u16 time; // time and |
98 | u16 time; // time and |
| 61 | u16 date; // date of last write acces to the file or directory. |
99 | u16 date; // date of last write acces to the file or directory. |
| 62 | u16 startcluster; // first cluster of the file or directory. |
100 | u16 startcluster; // first cluster of the file or directory. |
| 63 | u32 size; // size of the file or directory in bytes. |
101 | u32 size; // size of the file or directory in bytes. |
| 64 | }; |
102 | } __attribute__((packed)); |
| 65 | 103 | ||
| 66 | //________________________________________________________________________________________________________________________________________ |
104 | //________________________________________________________________________________________________________________________________________ |
| 67 | // |
105 | // |
| 68 | // Structure of an entry within the fileallocationtable. |
106 | // Structure of an entry within the fileallocationtable. |
| 69 | // |
107 | // |
| 70 | //________________________________________________________________________________________________________________________________________ |
108 | //________________________________________________________________________________________________________________________________________ |
| 71 | 109 | ||
| 72 | struct FatEntry |
110 | struct FatEntry |
| 73 | { |
111 | { |
| 74 | u16 next_cluster; // the next cluster of the file. |
112 | u16 next_cluster; // the next cluster of the file. |
| 75 | }; |
113 | } __attribute__((packed)); |
| 76 | 114 | ||
| 77 | 115 | ||
| 78 | 116 | ||
| 79 | 117 | ||
| 80 | 118 | ||
| 81 | //________________________________________________________________________________________________________________________________________ |
119 | //________________________________________________________________________________________________________________________________________ |
| 82 | // |
120 | // |
| 83 | // Structure of an partitionentry |
121 | // Partitions |
| 84 | // |
122 | // |
| 85 | //________________________________________________________________________________________________________________________________________ |
123 | //________________________________________________________________________________________________________________________________________ |
| - | 124 | ||
| - | 125 | #define _EMPTY 0x00 |
|
| - | 126 | #define _FAT12 0x01 |
|
| - | 127 | #define _FAT16_ST_32_MB 0x04 |
|
| - | 128 | #define _EXTENDED 0x05 |
|
| - | 129 | #define _FAT16_LT_32_MB 0x06 |
|
| - | 130 | #define _HPFS 0x07 |
|
| - | 131 | #define _FAT32 0x0B |
|
| - | 132 | #define _FAT32_BIOS_Extension 0x0C |
|
| - | 133 | #define _FAT16_32_MB_BIOS_Extension 0x0E |
|
| - | 134 | #define _EXTENDED_BIOS_Extension 0x0F |
|
| - | 135 | #define _EISA 0x12 |
|
| - | 136 | #define _DYNAMIC 0x42 |
|
| - | 137 | #define _Linux_Swap 0x82 |
|
| - | 138 | #define _Linux_Native 0x83 |
|
| - | 139 | #define _Linux_LVM 0x8E |
|
| - | 140 | #define _FreeBSD 0xA5 |
|
| - | 141 | #define _OpenBSD 0xA6 |
|
| - | 142 | #define _NetBSD 0xA9 |
|
| - | 143 | ||
| 86 | 144 | ||
| 87 | struct PartitionEntry |
145 | struct PartitionEntry |
| 88 | { |
146 | { |
| 89 | u8 PartitionState; |
147 | u8 PartitionState; |
| 90 | u8 BeginningHead; |
148 | u8 BeginningHead; |
| 91 | u16 BeginningCylinder; |
149 | u16 BeginningCylinder; |
| 92 | u8 Type; |
150 | u8 Type; |
| 93 | u8 EndHead; |
151 | u8 EndHead; |
| 94 | u16 EndCylinder; |
152 | u16 EndCylinder; |
| 95 | u32 NoSectorsBeforePartition; |
153 | u32 NoSectorsBeforePartition; |
| 96 | u32 NoSectorsPartition ; |
154 | u32 NoSectorsPartition ; |
| 97 | } __attribute__((packed)); |
155 | } __attribute__((packed)); |
| 98 | 156 | ||
| 99 | 157 | ||
| 100 | //________________________________________________________________________________________________________________________________________ |
158 | //________________________________________________________________________________________________________________________________________ |
| 101 | // |
159 | // |
| 102 | // Structure of the VolumeBootRecord |
160 | // Structure of the VolumeBootRecord |
| 103 | // |
161 | // |
| 104 | //________________________________________________________________________________________________________________________________________ |
162 | //________________________________________________________________________________________________________________________________________ |
| 105 | 163 | ||
| 106 | struct VBR_Entry |
164 | struct VBR_Entry |
| 107 | { |
165 | { |
| 108 | u8 dummy[11]; |
166 | u8 dummy[11]; |
| 109 | u16 bps; |
167 | u16 bps; |
| 110 | u8 SectorsPerCluster; |
168 | u8 SectorsPerCluster; |
| 111 | u16 ReservedSectors; |
169 | u16 ReservedSectors; |
| 112 | u8 NoFATCopies; |
170 | u8 NoFATCopies; |
| 113 | u16 MaxRootEntries; |
171 | u16 MaxRootEntries; |
| 114 | u16 dummy2; |
172 | u16 dummy2; |
| 115 | u8 dummy3; |
173 | u8 dummy3; |
| 116 | u16 SectorsPerFAT; |
174 | u16 SectorsPerFAT; |
| 117 | } __attribute__((packed)); |
175 | } __attribute__((packed)); |
| 118 | 176 | ||
| 119 | 177 | ||
| 120 | 178 | ||
| 121 | //________________________________________________________________________________________________________________________________________ |
179 | //________________________________________________________________________________________________________________________________________ |
| 122 | // |
180 | // |
| 123 | // Structure of the MasterBootRecord |
181 | // Structure of the MasterBootRecord |
| 124 | // |
182 | // |
| 125 | //________________________________________________________________________________________________________________________________________ |
183 | //________________________________________________________________________________________________________________________________________ |
| - | 184 | ||
| - | 185 | #define _MBR_SECTOR 0 // The MasterBootRecord is located in sector 0 |
|
| 126 | 186 | ||
| 127 | struct MBR_Entry |
187 | struct MBR_Entry |
| 128 | { |
188 | { |
| 129 | u8 ExecutableCode[446]; |
189 | u8 ExecutableCode[446]; |
| 130 | struct PartitionEntry PartitionEntry1; |
190 | struct PartitionEntry PartitionEntry1; |
| 131 | struct PartitionEntry PartitionEntry2; |
191 | struct PartitionEntry PartitionEntry2; |
| 132 | struct PartitionEntry PartitionEntry3; |
192 | struct PartitionEntry PartitionEntry3; |
| 133 | struct PartitionEntry PartitionEntry4; |
193 | struct PartitionEntry PartitionEntry4; |
| 134 | u16 ExecutableMarker; |
194 | u16 ExecutableMarker; |
| 135 | } __attribute__((packed)); |
195 | } __attribute__((packed)); |
| 136 | 196 | ||
| 137 | 197 | ||
| 138 | 198 | ||
| 139 | 199 | ||
| 140 | //________________________________________________________________________________________________________________________________________ |
200 | //________________________________________________________________________________________________________________________________________ |
| 141 | // |
201 | // |
| 142 | // API to the FAT16 filesystem |
202 | // API to the FAT16 filesystem |
| 143 | // |
203 | // |
| 144 | //________________________________________________________________________________________________________________________________________ |
204 | //________________________________________________________________________________________________________________________________________ |
| 145 | 205 | ||
| 146 | extern u8 InitFat16(void); |
206 | extern u8 InitFat16(void); |
| 147 | extern File * fopen_(u8 *fname,s8 mode); |
207 | extern File * fopen_(s8 *fname,s8 mode); |
| 148 | extern s16 fflush_(File *file); |
208 | extern s16 fflush_(File *file); |
| 149 | extern void fclose_(File *file); |
209 | extern void fclose_(File *file); |
| 150 | extern u32 fread_(void *buffer, u32 size, u32 count, File *file); |
210 | extern u32 fread_(void *buffer, u32 size, u32 count, File *file); |
| 151 | extern u32 fwrite_(void *buffer, u32 size, u32 count, File *file); |
211 | extern u32 fwrite_(void *buffer, u32 size, u32 count, File *file); |
| 152 | extern s16 fseek_(File *file, s32 offset, s16 origin); |
212 | extern s16 fseek_(File *file, s32 offset, s16 origin); |
| 153 | extern s16 fgetchar_(File *file); |
213 | extern s16 fgetchar_(File *file); |
| 154 | extern u8 fputchar_(File *file,s8 c); |
214 | extern u8 fputchar_(File *file,s8 c); |
| 155 | extern u8 fputs_(File *file,s8 *string); |
215 | extern u8 fputs_(File *file,s8 *string); |
| 156 | extern s8 * fgets_(s8 *s, s16 count, File *file); |
216 | extern s8 * fgets_(s8 *s, s16 count, File *file); |
| 157 | extern s16 frename_(s8 *oldname, s8 *newname); |
217 | extern s16 frename_(s8 *oldname, s8 *newname); |
| 158 | extern u8 fexist_(u8*fname); |
218 | extern u8 fexist_(s8 *fname); |
| - | 219 | extern u8 mkdir_(s8 *fname); |
|
| - | 220 | extern u8 chdir_(s8 *fname); |
|
| - | 221 | extern u8 findfirst_(s8 *fname, Find *item, u8 attribute); |
|
| - | 222 | extern u8 findnext_(Find *item); |
|
| - | 223 | extern u16 feof_(File *); |
|
| - | 224 | ||
| - | 225 | ||
| 159 | 226 | ||
| 160 | //________________________________________________________________________________________________________________________________________ |
227 | //________________________________________________________________________________________________________________________________________ |
| 161 | // |
228 | // |
| 162 | // Functions needed internaly for the fat16 implementation |
229 | // Functions needed internaly for the fat16 implementation |
| 163 | // |
230 | // |
| 164 | //________________________________________________________________________________________________________________________________________ |
231 | //________________________________________________________________________________________________________________________________________ |
| - | 232 | ||
| 165 | 233 | extern u8 SeekFileInDirectory(s8*fname, File *file); |
|
| 166 | extern u8 CreateDirectoryEntry(u8*fname, u16 cluster, File *file,u8 attrib); |
234 | extern u8 CreateFileInDirectory(s8*fname, File *file); |
| 167 | extern u16 FindNextFreeCluster(File *file); |
- | |
| 168 | extern u8 SeekDirectoryEntry(u8*fname, File *file); |
235 | extern u16 FindNextFreeCluster(File *file); |
| 169 | extern void SeperateFileName(u8*fname, u8*name); |
236 | extern void SeperateFileName(s8*fname, s8*name); |
| 170 | extern u8 ScanSubDirectories(u8*fname, File *file); |
237 | extern u8 ScanSubDirectories(s8*fname, File *file); |
| 171 | extern u16 GetNextCluster(File *file); |
238 | extern u16 GetNextCluster(File *file); |
| 172 | extern u8 AppendCluster(File *file); |
239 | extern u8 AppendCluster(File *file); |
| 173 | extern u16 GetFatClusterOffset(File *file); |
240 | extern u16 GetFatClusterOffset(File *file); |
| 174 | extern u16 GetFatSectorIndex(File *file); |
241 | extern u16 GetFatSectorIndex(File *file); |
| 175 | - | ||
| - | 242 | extern File * ReserveFilePointer(void); |
|
| - | 243 | extern u16 SeekSubDirectory(s8 *fname); |
|
| - | 244 | extern u8 CreateSubDirectory_(s8 *fname); |
|
| - | 245 | extern u8 FindItem(Find *); |
|
| - | 246 | extern void FreeFilePointer(File *file); |
|
| 176 | 247 | ||
| 177 | //________________________________________________________________________________________________________________________________________ |
248 | //________________________________________________________________________________________________________________________________________ |
| 178 | // |
249 | // |
| 179 | // Vaiables needed internaly for the fat16 implementation |
250 | // Vaiables needed internaly for the fat16 implementation |
| 180 | // |
251 | // |
| 181 | //________________________________________________________________________________________________________________________________________ |
252 | //________________________________________________________________________________________________________________________________________ |
| 182 | 253 | ||
| 183 | extern u8 SectorsPerCluster; |
254 | extern u8 SectorsPerCluster; |
| 184 | extern u8 SectorsPerCluster; |
255 | extern u32 CWD; |
| - | 256 | ||
| - | 257 | ||
| 185 | - | ||
| 186 | extern struct time rtctime; |
258 | |
| 187 | #endif |
259 | #endif |
| 188 | 260 | ||
| 189 | 261 | ||
| 190 | 262 | ||
| 191 | 263 | ||
| 192 | 264 | ||