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Align MBRBlockDevice writes to underlying BlockDevice write size #8262

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Merged
merged 1 commit into from
Sep 28, 2018
Merged

Align MBRBlockDevice writes to underlying BlockDevice write size #8262

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6 changes: 6 additions & 0 deletions features/storage/blockdevice/MBRBlockDevice.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -73,6 +73,12 @@ static int partition_absolute(
{
// Allocate smallest buffer necessary to write MBR
uint32_t buffer_size = std::max<uint32_t>(bd->get_program_size(), sizeof(struct mbr_table));

// Prevent alignment issues
if(buffer_size % bd->get_program_size() != 0) {
buffer_size += bd->get_program_size() - (buffer_size % bd->get_program_size());
}

uint8_t *buffer = new uint8_t[buffer_size];

// Check for existing MBR
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