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Assign read functions in struct

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This commit is contained in:
shermp
2019-06-09 22:20:10 +12:00
parent c12e02acfa
commit 2ba2fd8e33
2 changed files with 18 additions and 0 deletions
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3
src/minivhd_internal.h
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@@ -68,4 +68,7 @@ void mvhd_buffer_to_header(MVHDSparseHeader* header, uint8_t* buffer);
void mvhd_footer_to_buffer(MVHDFooter* footer, uint8_t* buffer);
void mvhd_header_to_buffer(MVHDSparseHeader* header, uint8_t* buffer);
void mvhd_generate_uuid(uint8_t *uuid);
int mvhd_fixed_read(MVHDMeta* vhdm, int offset, int num_sectors, void* out_buff);
int mvhd_sparse_read(MVHDMeta* vhdm, int offset, int num_sectors, void* out_buff);
int mvhd_diff_read(MVHDMeta* vhdm, int offset, int num_sectors, void* out_buff);
#endif

15
src/minivhd_manage.c
View File

@@ -97,6 +97,20 @@ static void mvhd_calc_sparse_values(MVHDMeta* vhdm) {
}
}
static void mvhd_assign_io_funcs(MVHDMeta* vhdm) {
switch (vhdm->footer.disk_type) {
case MVHD_TYPE_FIXED:
vhdm->read_sectors = mvhd_fixed_read;
break;
case MVHD_TYPE_DYNAMIC:
vhdm->read_sectors = mvhd_sparse_read;
break;
case MVHD_TYPE_DIFF:
vhdm->read_sectors = mvhd_diff_read;
break;
}
}
MVHDGeom mvhd_calculate_geometry(int size_mb, int* new_size) {
MVHDGeom chs;
uint32_t ts = ((uint64_t)size_mb * 1024 * 1024) / MVHD_SECTOR_SIZE;
@@ -172,6 +186,7 @@ MVHDMeta* mvhd_open(const char* path, int* err) {
*err = MVHD_ERR_TYPE;
goto cleanup_file;
}
mvhd_assign_io_funcs(vhdm);
/* If we've reached this point, we are good to go, so skip the cleanup steps */
goto end;
cleanup_file: