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52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
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// worst case wbfs fragmentation scenario:
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// 9GB (dual layer) / 2mb (wbfs sector size) = 4608
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#define MAX_FRAG 20000
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// max that ehcmodule_frag will allow at the moment is about:
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// 40000/4/3-1 = 21844
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "libwbfs/libwbfs.h"
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typedef struct
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{
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u32 offset; // file offset, in sectors unit
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u32 sector;
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u32 count;
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} Fragment;
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typedef struct
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{
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u32 size; // num sectors
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u32 num; // num fragments
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u32 maxnum;
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Fragment frag[MAX_FRAG];
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} FragList;
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typedef int (*frag_append_t)(void *ff, u32 offset, u32 sector, u32 count);
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int _FAT_get_fragments (const char *path, _frag_append_t append_fragment, void *callback_data);
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void frag_init(FragList *ff, int maxnum);
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int frag_append(FragList *ff, u32 offset, u32 sector, u32 count);
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int _frag_append(void *ff, u32 offset, u32 sector, u32 count);
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int frag_concat(FragList *ff, FragList *src);
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// in case a sparse block is requested,
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// the returned poffset might not be equal to requested offset
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// the difference should be filled with 0
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int frag_get(FragList *ff, u32 offset, u32 count,
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u32 *poffset, u32 *psector, u32 *pcount);
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int frag_remap(FragList *ff, FragList *log, FragList *phy);
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int get_frag_list(u8 *id);
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int set_frag_list(u8 *id);
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#ifdef __cplusplus
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}
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#endif
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