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dump/restore files decrypted

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Most notable is that you can now restore atmosphere prodinfo backups
This commit is contained in:
suchmememanyskill 2021-03-17 16:35:22 +01:00
parent d8f0c714b6
commit 347513a037
1 changed files with 43 additions and 7 deletions
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50
source/storage/emmcfile.c
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@ -12,10 +12,11 @@
#include <storage/nx_sd.h>
#include <string.h>
#include "../fs/fsutils.h"
#include "nx_emmc_bis.h"
// Uses default storage in nx_emmc.c
// Expects the correct mmc & partition to be set
ErrCode_t EmmcDumpToFile(const char *path, u32 lba_start, u32 lba_end, u8 force){
ErrCode_t EmmcDumpToFile(const char *path, u32 lba_start, u32 lba_end, u8 force, u8 crypt){
FIL fp;
u32 curLba = lba_start;
u32 totalSectors = lba_end - lba_start + 1;
@ -41,7 +42,14 @@ ErrCode_t EmmcDumpToFile(const char *path, u32 lba_start, u32 lba_end, u8 force)
while (totalSectors > 0){
u32 num = MIN(totalSectors, TConf.FSBuffSize / NX_EMMC_BLOCKSIZE);
if (!emummc_storage_read(&emmc_storage, curLba, num, buff)){
int readRes = 0;
if (crypt)
readRes = !nx_emmc_bis_read(curLba, num, buff);
else
readRes = emummc_storage_read(&emmc_storage, curLba, num, buff);
if (!readRes){
err = newErrCode(TE_ERR_EMMC_READ_FAIL);
break;
}
@ -64,7 +72,7 @@ ErrCode_t EmmcDumpToFile(const char *path, u32 lba_start, u32 lba_end, u8 force)
return err;
}
ErrCode_t EmmcRestoreFromFile(const char *path, u32 lba_start, u32 lba_end, u8 force){
ErrCode_t EmmcRestoreFromFile(const char *path, u32 lba_start, u32 lba_end, u8 force, u8 crypt){
FIL fp;
u32 curLba = lba_start;
u32 totalSectorsDest = lba_end - lba_start + 1;
@ -99,7 +107,13 @@ ErrCode_t EmmcRestoreFromFile(const char *path, u32 lba_start, u32 lba_end, u8 f
break;
}
if (!emummc_storage_write(&emmc_storage, curLba, num, buff)){
int writeRes = 0;
if (crypt)
writeRes = !nx_emmc_bis_write(curLba, num, buff);
else
writeRes = emummc_storage_write(&emmc_storage, curLba, num, buff);
if (!writeRes){
err = newErrCode(TE_ERR_EMMC_WRITE_FAIL);
break;
}
@ -117,10 +131,24 @@ ErrCode_t EmmcRestoreFromFile(const char *path, u32 lba_start, u32 lba_end, u8 f
return err;
}
int isSystemPartCrypt(emmc_part_t *part){
switch (part->index){
case 0:
case 1:
case 8:
case 9:
case 10:
return 1;
default:
return 0;
}
}
ErrCode_t DumpOrWriteEmmcPart(const char *path, const char *part, u8 write, u8 force){
const u32 BOOT_PART_SIZE = emmc_storage.ext_csd.boot_mult << 17;
u32 lba_start = 0;
u32 lba_end = 0;
u8 crypt = false;
if (!sd_mount())
return newErrCode(TE_ERR_NO_SD);
@ -143,9 +171,17 @@ ErrCode_t DumpOrWriteEmmcPart(const char *path, const char *part, u8 write, u8 f
if (!system_part)
return newErrCode(TE_ERR_PARTITION_NOT_FOUND);
lba_start = system_part->lba_start;
lba_end = system_part->lba_end;
if (isSystemPartCrypt(system_part)){
nx_emmc_bis_init(system_part);
crypt = true;
lba_start = 0;
lba_end = system_part->lba_end - system_part->lba_start;
}
else {
lba_start = system_part->lba_start;
lba_end = system_part->lba_end;
}
}
return ((write) ? EmmcRestoreFromFile(path, lba_start, lba_end, force) : EmmcDumpToFile(path, lba_start, lba_end, force));
return ((write) ? EmmcRestoreFromFile(path, lba_start, lba_end, force, crypt) : EmmcDumpToFile(path, lba_start, lba_end, force, crypt));
}