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This commit is contained in:
James Tophoven 2019-10-04 14:15:40 +02:00
parent ed43620605
commit 141a6f390c
1 changed files with 37 additions and 33 deletions
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70
source/keys/keys.c
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@ -408,20 +408,19 @@ bool readData(u8 *buffer, u32 offset, u32 length, u8 enc)
{
u32 sectorsToRead = SECTORS_IN_CLUSTER - clusterOffset;
if (disk_read_prod(tmp + (sectorOffset * NX_EMMC_BLOCKSIZE), sector, sectorsToRead, enc) != RES_OK)
{
goto out;
}
sector += sectorsToRead;
sectorCount -= sectorsToRead;
clusterOffset = 0;
sectorOffset += sectorsToRead;
}
if(sectorCount == 0) goto done;
if (sectorCount == 0)
goto done;
if (disk_read_prod(tmp + (sectorOffset * NX_EMMC_BLOCKSIZE), sector, sectorCount, enc) != RES_OK)
{
goto out;
}
memcpy(buffer, tmp + newOffset, length);
done:
@ -442,29 +441,34 @@ bool writeData(u8 *buffer, u32 offset, u32 length, u8 enc)
u32 newOffset = (offset % NX_EMMC_BLOCKSIZE);
// if there is a sector offset, read involved sector, write data to it with offset and write back whole sector to be sector aligned
if(newOffset > 0){
if (newOffset > 0)
{
u32 bytesToRead;
if(length > NX_EMMC_BLOCKSIZE){
if (length > NX_EMMC_BLOCKSIZE)
{
bytesToRead = NX_EMMC_BLOCKSIZE - newOffset;
} else {
}
else
{
bytesToRead = length - newOffset;
}
if(disk_read_prod(tmp_sec, sector, 1, enc) != RES_OK){
goto out;
}
memcpy(tmp_sec + newOffset, buffer, bytesToRead);
if(disk_write_prod(tmp_sec, sector, 1, enc) != RES_OK){
if (disk_read_prod(tmp_sec, sector, 1, enc) != RES_OK)
goto out;
}
memcpy(tmp_sec + newOffset, buffer, bytesToRead);
if (disk_write_prod(tmp_sec, sector, 1, enc) != RES_OK)
goto out;
sector++;
length -= bytesToRead;
newOffset = bytesToRead;
// are we done?
if(length == 0) goto done;
if (length == 0)
goto done;
}
// write whole sectors in chunks while being cluster aligned
u32 sectorCount = (length - 1 / NX_EMMC_BLOCKSIZE) + 1;
tmp = (u8 *)malloc(sectorCount * NX_EMMC_BLOCKSIZE);
@ -474,9 +478,9 @@ bool writeData(u8 *buffer, u32 offset, u32 length, u8 enc)
while (clusterOffset + sectorCount > SECTORS_IN_CLUSTER)
{
u32 sectorsToRead = SECTORS_IN_CLUSTER - clusterOffset;
if(disk_write_prod(buffer + newOffset + (sectorOffset * NX_EMMC_BLOCKSIZE), sector, sectorsToRead, enc) != RES_OK){
if (disk_write_prod(buffer + newOffset + (sectorOffset * NX_EMMC_BLOCKSIZE), sector, sectorsToRead, enc) != RES_OK)
goto out;
}
sector += sectorsToRead;
sectorOffset += sectorsToRead;
sectorCount -= sectorsToRead;
@ -485,38 +489,38 @@ bool writeData(u8 *buffer, u32 offset, u32 length, u8 enc)
}
// write remaining sectors
if(sectorCount > 0){
if(disk_write_prod(buffer + newOffset + (sectorOffset * NX_EMMC_BLOCKSIZE), sector, sectorCount, enc) != RES_OK){
if (sectorCount > 0)
{
if (disk_write_prod(buffer + newOffset + (sectorOffset * NX_EMMC_BLOCKSIZE), sector, sectorCount, enc) != RES_OK)
goto out;
}
length -= sectorCount * NX_EMMC_BLOCKSIZE;
sector += sectorCount;
sectorOffset += sectorCount;
}
// if there is data remaining that is smaller than a sector, read that sector, write remaining data to it and write back whole sector
if(length == 0) goto done;
if(length >= NX_EMMC_BLOCKSIZE){
// if there is data remaining that is smaller than a sector, read that sector, write remaining data to it and write back whole sector
if (length == 0)
goto done;
if (length >= NX_EMMC_BLOCKSIZE)
{
gfx_printf("\n%kERROR, ERROR!! remaining length: %d\n", COLOR_RED, length);
goto out;
}
if(disk_read_prod(tmp_sec, sector, 1, enc) != RES_OK){
if (disk_read_prod(tmp_sec, sector, 1, enc) != RES_OK)
goto out;
}
memcpy(tmp, buffer + newOffset + (sectorOffset * NX_EMMC_BLOCKSIZE), length);
if(disk_write_prod(tmp_sec, sector, 1, enc) != RES_OK){
if (disk_write_prod(tmp_sec, sector, 1, enc) != RES_OK)
goto out;
}
done:
done:
result = true;
out:
free(tmp_sec);
free(tmp);
return result;
// u32 sector = (offset / NX_EMMC_BLOCKSIZE);
// u32 newOffset = (offset % NX_EMMC_BLOCKSIZE);