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Virtual consoles kinda work!

Browse source 
We now make three VirtualConsoles at boot: tty0, tty1, and tty2.
We launch an instance of /bin/sh in each one.
You switch between them with Alt+1/2/3

How very very cool :^)
This commit is contained in:
Andreas Kling 2018-10-30 15:33:37 +01:00
parent 68739dc43e
commit 7a7956a595
Notes: sideshowbarker 2024-07-19 18:36:29 +09:00
24 changed files with 251 additions and 103 deletions
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44
VirtualFileSystem/VirtualFileSystem.cpp
View file

@ -89,6 +89,21 @@ auto VirtualFileSystem::makeNode(InodeIdentifier inode) -> RetainPtr<Node>
return vnode;
}
auto VirtualFileSystem::makeNode(CharacterDevice& device) -> RetainPtr<Node>
{
auto vnode = allocateNode();
ASSERT(vnode);
#ifdef VFS_DEBUG
kprintf("makeNode: device=%p (%u,%u)\n", &device, device.major(), device.minor());
#endif
m_device2vnode.set(encodedDevice(device.major(), device.minor()), vnode.ptr());
vnode->m_characterDevice = &device;
return vnode;
}
auto VirtualFileSystem::getOrCreateNode(InodeIdentifier inode) -> RetainPtr<Node>
{
auto it = m_inode2vnode.find(inode);
@ -97,6 +112,14 @@ auto VirtualFileSystem::getOrCreateNode(InodeIdentifier inode) -> RetainPtr<Node
return makeNode(inode);
}
auto VirtualFileSystem::getOrCreateNode(CharacterDevice& device) -> RetainPtr<Node>
{
auto it = m_device2vnode.find(encodedDevice(device.major(), device.minor()));
if (it != m_device2vnode.end())
return (*it).value;
return makeNode(device);
}
bool VirtualFileSystem::mount(RetainPtr<FileSystem>&& fileSystem, const String& path)
{
ASSERT(fileSystem);
@ -161,10 +184,15 @@ void VirtualFileSystem::freeNode(Node* node)
{
ASSERT(node);
ASSERT(node->inUse());
m_inode2vnode.remove(node->inode);
node->inode.fileSystem()->release();
node->inode = InodeIdentifier();
node->m_characterDevice = nullptr;
if (node->inode.isValid()) {
m_inode2vnode.remove(node->inode);
node->inode.fileSystem()->release();
node->inode = InodeIdentifier();
}
if (node->m_characterDevice) {
m_device2vnode.remove(encodedDevice(node->m_characterDevice->major(), node->m_characterDevice->minor()));
node->m_characterDevice = nullptr;
}
m_nodeFreeList.append(move(node));
}
@ -361,6 +389,14 @@ bool VirtualFileSystem::touch(const String& path)
return inode.fileSystem()->setModificationTime(inode, ktime(nullptr));
}
OwnPtr<FileHandle> VirtualFileSystem::open(CharacterDevice& device, int options)
{
auto vnode = getOrCreateNode(device);
if (!vnode)
return nullptr;
return make<FileHandle>(move(vnode));
}
OwnPtr<FileHandle> VirtualFileSystem::open(const String& path, int& error, int options, InodeIdentifier base)
{
auto inode = resolvePath(path, error, base, options);