usbloadergx/source/partition.c

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#include <stdio.h>
#include <string.h>
#include <ogcsys.h>
#include "partition.h"
#include "usbstorage.h"
#include "utils.h"
/* 'partition table' structure */
typedef struct {
/* Zero bytes */
u8 padding[446];
/* Partition table entries */
partitionEntry entries[MAX_PARTITIONS];
} ATTRIBUTE_PACKED partitionTable;
s32 Partition_GetEntries(partitionEntry *outbuf, u32 *outval)
{
static partitionTable table ATTRIBUTE_ALIGN(32);
u32 cnt, sector_size;
s32 ret;
/* Get sector size */
ret = USBStorage_GetCapacity(&sector_size);
if (ret < 0)
return ret;
/* Read partition table */
ret = USBStorage_ReadSectors(0, 1, &table);
if (ret < 0)
return ret;
/* Swap endianess */
for (cnt = 0; cnt < 4; cnt++) {
partitionEntry *entry = &table.entries[cnt];
entry->sector = swap32(entry->sector);
entry->size = swap32(entry->size);
}
/* Set partition entries */
memcpy(outbuf, table.entries, sizeof(table.entries));
/* Set sector size */
*outval = sector_size;
return 0;
}