implement write_block in RAMDiskDevice

1 files changed, 16 insertions, 0 deletions

diff --git a/kernel/devices/src/storage/RAMDisk/RAMDiskDevice.cpp b/kernel/devices/src/storage/RAMDisk/RAMDiskDevice.cpp
index f33cf94..1bc475d 100644
--- a/kernel/devices/src/storage/RAMDisk/RAMDiskDevice.cpp
+++ b/kernel/devices/src/storage/RAMDisk/RAMDiskDevice.cpp
@@ -35,4 +35,20 @@ namespace devices::storage::ram_disk
 
     kstd::libc::memcpy(buffer, source, block_size);
   }
+
+  auto ram_disk_device::write_block(size_t block_index, void const * buffer) -> void
+  {
+    if (buffer == nullptr)
+    {
+      kapi::system::panic("[RAM DISK DEVICE] write_block called with null buffer.");
+    }
+
+    // TODO BA-FS26 add bounds checking based on module size?
+    // TODO BA-FS26 ignore writes beyond the end of the module?
+
+    auto const offset = block_index * block_size;
+    auto const destination = static_cast<std::byte *>(m_boot_module.start_address) + offset;
+
+    kstd::libc::memcpy(destination, buffer, block_size);
+  }
 }  // namespace devices::storage::ram_disk
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