Import all this stuff into a single repo called Serenity.

VirtualFileSystem/SyntheticFileSystem.cpp

@@ -0,0 +1,123 @@
+#include "SyntheticFileSystem.h"
+
+RetainPtr<SyntheticFileSystem> SyntheticFileSystem::create()
+{
+    return adopt(*new SyntheticFileSystem);
+}
+
+SyntheticFileSystem::SyntheticFileSystem()
+{
+}
+
+SyntheticFileSystem::~SyntheticFileSystem()
+{
+}
+
+bool SyntheticFileSystem::initialize()
+{
+    // Add a File for the root directory.
+    // FIXME: This needs work.
+    auto rootDir = make<File>();
+    rootDir->metadata.inode = { id(), 1 };
+    rootDir->metadata.mode = 0040555;
+    rootDir->metadata.uid = 0;
+    rootDir->metadata.gid = 0;
+    rootDir->metadata.size = 0;
+    rootDir->metadata.mtime = mepoch;
+    m_files.append(std::move(rootDir));
+
+    addFile(createTextFile("file", "I'm a synthetic file!\n"));
+    addFile(createTextFile("message", "Hey! This isn't my bottle!\n"));
+    return true;
+}
+
+auto SyntheticFileSystem::createTextFile(String&& name, String&& text) -> OwnPtr<File>
+{
+    auto file = make<File>();
+    file->data = text.toByteBuffer();
+    file->name = std::move(name);
+    file->metadata.size = file->data.size();
+    file->metadata.uid = 100;
+    file->metadata.gid = 200;
+    file->metadata.mode = 0100644;
+    file->metadata.mtime = mepoch;
+    return file;
+}
+
+void SyntheticFileSystem::addFile(OwnPtr<File>&& file)
+{
+    ASSERT(file);
+    file->metadata.inode = { id(), m_files.size() + 1 };
+    m_files.append(std::move(file));
+}
+
+const char* SyntheticFileSystem::className() const
+{
+    return "synthfs";
+}
+
+InodeIdentifier SyntheticFileSystem::rootInode() const
+{
+    return { id(), 1 };
+}
+
+ByteBuffer SyntheticFileSystem::readInode(InodeIdentifier inode) const
+{
+    ASSERT(inode.fileSystemID() == id());
+#ifdef SYNTHFS_DEBUG
+    printf("[synthfs] readInode %u\n", inode.index());
+#endif
+    ASSERT(inode.index() != 1);
+    ASSERT(inode.index() <= m_files.size());
+    return m_files[inode.index() - 1]->data;
+}
+
+bool SyntheticFileSystem::enumerateDirectoryInode(InodeIdentifier inode, std::function<bool(const DirectoryEntry&)> callback) const
+{
+    ASSERT(inode.fileSystemID() == id());
+#ifdef SYNTHFS_DEBUG
+    printf("[synthfs] enumerateDirectoryInode %u\n", inode.index());
+#endif
+    if (inode.index() != 1)
+        return false;
+
+    callback({ ".", m_files[0]->metadata.inode });
+    callback({ "..", m_files[0]->metadata.inode });
+
+    for (unsigned i = 1; i < m_files.size(); ++i)
+        callback({ m_files[i]->name, m_files[i]->metadata.inode });
+    return true;
+}
+
+InodeMetadata SyntheticFileSystem::inodeMetadata(InodeIdentifier inode) const
+{
+    ASSERT(inode.fileSystemID() == id());
+#ifdef SYNTHFS_DEBUG
+    printf("[synthfs] inodeMetadata(%u)\n", inode.index);
+#endif
+    if (inode.index() == 0 || inode.index() > m_files.size())
+        return InodeMetadata();
+    return m_files[inode.index() - 1]->metadata;
+}
+
+bool SyntheticFileSystem::setModificationTime(InodeIdentifier, dword timestamp)
+{
+    (void) timestamp;
+    printf("FIXME: Implement SyntheticFileSystem::setModificationTime().\n");
+    return false;
+}
+
+InodeIdentifier SyntheticFileSystem::createInode(InodeIdentifier parentInode, const String& name, word mode)
+{
+    (void) parentInode;
+    (void) name;
+    (void) mode;
+    printf("FIXME: Implement SyntheticFileSystem::createDirectoryInode().\n");
+    return { };
+}
+
+bool SyntheticFileSystem::writeInode(InodeIdentifier, const ByteBuffer&)
+{
+    printf("FIXME: Implement SyntheticFileSystem::writeInode().\n");
+    return false;
+}