Merge branch 'develop-BA-FS26' into 'develop'HEADdevelop

Merge of BA-FS26 branch into develop

See merge request teachos/kernel!49

1 files changed, 57 insertions, 0 deletions

diff --git a/kernel/src/filesystem/device_inode.cpp b/kernel/src/filesystem/device_inode.cpp
new file mode 100644
index 0000000..81a784c
--- /dev/null
+++ b/kernel/src/filesystem/device_inode.cpp
@@ -0,0 +1,57 @@
+#include <kernel/filesystem/device_inode.hpp>
+
+#include <kernel/devices/block_device_utils.hpp>
+
+#include <kapi/devices/device.hpp>
+#include <kapi/system.hpp>
+
+#include <kstd/memory>
+
+#include <cstddef>
+
+namespace kernel::filesystem
+{
+  device_inode::device_inode(kstd::shared_ptr<kapi::devices::device> const & device)
+      : m_device(device)
+  {
+    if (!device)
+    {
+      kapi::system::panic("[FILESYSTEM] device_inode constructed with null device.");
+    }
+  }
+
+  auto device_inode::read(void * buffer, size_t offset, size_t size) const -> size_t
+  {
+    if (m_device->is_block_device())
+    {
+      return devices::block_device_utils::read(m_device, buffer, offset, size);
+    }
+    else
+    {
+      kapi::system::panic("[FILESYSTEM] device_file::read called on non-block device.");
+    }
+  }
+
+  auto device_inode::write(void const * buffer, size_t offset, size_t size) -> size_t
+  {
+    if (m_device->is_block_device())
+    {
+      return devices::block_device_utils::write(m_device, buffer, offset, size);
+    }
+    else
+    {
+      kapi::system::panic("[FILESYSTEM] device_file::write called on non-block device.");
+    }
+  }
+
+  auto device_inode::device() const -> kstd::shared_ptr<kapi::devices::device> const &
+  {
+    return m_device;
+  }
+
+  auto device_inode::is_device() const -> bool
+  {
+    return true;
+  }
+
+}  // namespace kernel::filesystem
\ No newline at end of file