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Add block struct and close implementation

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This commit is contained in:
shermp
2019-06-09 16:04:42 +12:00
parent 0448009a2b
commit 9e233042e1
3 changed files with 65 additions and 45 deletions
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5
src/minivhd.h
View File

@@ -11,7 +11,7 @@ typedef enum MVHDType {
} MVHDType;
typedef enum MVHDError {
MVHD_ERR_MEM = -1,
MVHD_ERR_MEM,
MVHD_ERR_FILE,
MVHD_ERR_NOT_VHD,
MVHD_ERR_TYPE,
@@ -22,9 +22,10 @@ typedef enum MVHDError {
typedef struct MVHDMeta {
FILE* f;
char* filename;
struct MVHDMeta* parent;
MVHDFooter footer;
MVHDSparseHeader sparse;
struct MVHDMeta* parent;
MVHDBlock* block;
} MVHDMeta;
MVHDMeta* mvhd_open(const char* path, int* err);

92
src/minivhd_internal.h
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@@ -6,53 +6,59 @@
#define MVHD_FOOTER_SIZE 512
#define MVHD_SPARSE_SIZE 1024
typedef struct MVHDFooter
{
uint8_t cookie[8];
uint32_t features;
uint32_t fi_fmt_vers;
uint64_t data_offset;
uint32_t timestamp;
uint8_t cr_app[4];
uint32_t cr_vers;
uint8_t cr_host_os[4];
uint64_t orig_sz;
uint64_t curr_sz;
struct {
uint16_t cyl;
uint8_t heads;
uint8_t spt;
} geom;
uint32_t disk_type;
uint32_t checksum;
uint8_t uuid[16];
uint8_t saved_st;
uint8_t reserved[427];
#define MVHD_SECTOR_SIZE 512
#define MVHD_MAX_BLOCK_SIZE 0x00200000
typedef struct MVHDFooter {
uint8_t cookie[8];
uint32_t features;
uint32_t fi_fmt_vers;
uint64_t data_offset;
uint32_t timestamp;
uint8_t cr_app[4];
uint32_t cr_vers;
uint8_t cr_host_os[4];
uint64_t orig_sz;
uint64_t curr_sz;
struct {
uint16_t cyl;
uint8_t heads;
uint8_t spt;
} geom;
uint32_t disk_type;
uint32_t checksum;
uint8_t uuid[16];
uint8_t saved_st;
uint8_t reserved[427];
} MVHDFooter;
typedef struct MVHDSparseHeader
{
uint8_t cookie[8];
uint64_t data_offset;
uint64_t bat_offset;
uint32_t head_vers;
uint32_t max_bat_ent;
uint32_t block_sz;
uint32_t checksum;
uint8_t par_uuid[16];
uint32_t par_timestamp;
uint32_t reserved_1;
uint8_t par_utf16_name[512];
struct {
uint32_t plat_code;
uint32_t plat_data_space;
uint32_t plat_data_len;
uint32_t reserved;
uint64_t plat_data_offset;
} par_loc_entry[8];
uint8_t reserved_2[256];
typedef struct MVHDSparseHeader {
uint8_t cookie[8];
uint64_t data_offset;
uint64_t bat_offset;
uint32_t head_vers;
uint32_t max_bat_ent;
uint32_t block_sz;
uint32_t checksum;
uint8_t par_uuid[16];
uint32_t par_timestamp;
uint32_t reserved_1;
uint8_t par_utf16_name[512];
struct {
uint32_t plat_code;
uint32_t plat_data_space;
uint32_t plat_data_len;
uint32_t reserved;
uint64_t plat_data_offset;
} par_loc_entry[8];
uint8_t reserved_2[256];
} MVHDSparseHeader;
typedef struct MVHDBlock {
uint8_t* bitmap;
uint32_t offset;
} MVHDBlock;
bool mvhd_is_conectix_str(const void* buffer);
void mvhd_buffer_to_footer(MVHDFooter* footer, uint8_t* buffer);
void mvhd_buffer_to_header(MVHDSparseHeader* header, uint8_t* buffer);

13
src/minivhd_manage.c
View File

@@ -114,5 +114,18 @@ end:
}
void mvhd_close(MVHDMeta* vhdm) {
if (vhdm->parent != NULL) {
mvhd_close(vhdm->parent);
}
fclose(vhdm->f);
if (vhdm->block != NULL) {
for (uint32_t i = 0; i < vhdm->sparse.max_bat_ent; i++) {
free(vhdm->block[i].bitmap);
vhdm->block[i].bitmap = NULL;
}
free(vhdm->block);
vhdm->block = NULL;
}
free(vhdm);
vhdm = NULL;
}