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Add basic character device support. Start with null and zero.

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This commit is contained in:
Andreas Kling 2018-10-14 02:59:22 +02:00
parent fa3b11ac64
commit 93556d6743
14 changed files with 157 additions and 2 deletions
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10
VirtualFileSystem/FileHandle.cpp
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@ -1,5 +1,6 @@
#include "FileHandle.h"
#include "FileSystem.h"
#include "CharacterDevice.h"
FileHandle::FileHandle(RetainPtr<VirtualFileSystem::Node>&& vnode)
: m_vnode(std::move(vnode))
@ -10,8 +11,15 @@ FileHandle::~FileHandle()
{
}
ByteBuffer FileHandle::read() const
ByteBuffer FileHandle::read()
{
if (m_vnode->isCharacterDevice()) {
auto buffer = ByteBuffer::createUninitialized(1024);
ssize_t nread = m_vnode->characterDevice()->read(buffer.pointer(), buffer.size());
buffer.trim(nread);
return buffer;
}
return m_vnode->fileSystem()->readInode(m_vnode->inode);
}