We now can navigate in the VFS using the integrated shell.

6 files changed, 104 insertions, 45 deletions

diff --git a/Source/Kernel/VFS/DirectoryNode.class.cpp b/Source/Kernel/VFS/DirectoryNode.class.cpp
new file mode 100644
index 0000000..d624e97
--- /dev/null
+++ b/Source/Kernel/VFS/DirectoryNode.class.cpp
@@ -0,0 +1,76 @@
+#include "DirectoryNode.class.h"
+
+bool DirectoryNode::removable() {
+	if (!m_contentLoaded)
+		if (!loadContent())
+			return false;
+	return m_children.empty();
+}
+
+bool DirectoryNode::loadContent() {
+	if (m_contentLoaded) return true;
+	bool b = m_fs->loadContents(this);
+	if (!b) return false;
+	m_length = m_children.size();
+	m_contentLoaded = true;
+	return b;
+}
+
+FSNode* DirectoryNode::getChild(u32int index) {
+	if (!m_contentLoaded)
+		if (!loadContent())
+			return NULL;
+	if (index >= m_children.size()) return NULL;
+	return m_children[index];
+}
+
+FSNode* DirectoryNode::getChild(const String& name) {
+	if (!m_contentLoaded)
+		if (!loadContent())
+			return NULL;
+	for (u32int i = 0; i < m_children.size(); i++) {
+		if (name == m_children[i]->getName())
+			return m_children[i];
+	}
+	return NULL;
+}
+
+FileNode* DirectoryNode::createFile(const String& name) {
+	FileNode* n = m_fs->createFile(this, name);
+	m_length = m_children.size();
+	return n;
+}
+
+DirectoryNode* DirectoryNode::createDirectory(const String& name) {
+	DirectoryNode* n = m_fs->createDirectory(this, name);
+	m_length = m_children.size();
+	return n;
+}
+
+bool DirectoryNode::remove(FSNode* child) {
+	//Check node is indeed one of our childs
+	if (!m_contentLoaded)
+		if (!loadContent())
+			return false;
+	u32int idx = (u32int) - 1;
+	for (u32int i = 0; i < m_children.size(); i++) {
+		if (m_children[i] == child) {
+			idx = i;
+			break;
+		}
+	}
+	if (idx == (u32int) - 1) return false;
+
+	//Check if we can remove node
+	if (!m_children[idx]->removable()) return false;
+	if (m_fs != m_children[idx]->getFS()) return false;	//We could !be on the same FS
+
+	//Ask FS to remove node
+	if (!m_fs->remove(this, child)) return false;
+
+	//Remove node from our children list
+	m_children[idx] = m_children.back();
+	m_children.pop();
+
+	return true;
+}
diff --git a/Source/Kernel/VFS/DirectoryNode.class.h b/Source/Kernel/VFS/DirectoryNode.class.h
index cb1574c..5de523e 100644
--- a/Source/Kernel/VFS/DirectoryNode.class.h
+++ b/Source/Kernel/VFS/DirectoryNode.class.h
@@ -13,48 +13,19 @@ class DirectoryNode : public FSNode {
 	DirectoryNode(String name, FileSystem* fs, FSNode* parent, u32int permissions = 0777,
 			u32int uid = 0, u32int gid = 0) : 
 			FSNode(name, fs, parent, 0, permissions, uid, gid), m_children(), m_contentLoaded(false) {}
+	virtual ~DirectoryNode() {}
 
 	Vector<FSNode*> &getChildren() { return m_children; }	//MUST BE USED ONLY BY FILESYSTEMS
 
 	u8int type() { return NT_DIRECTORY; }
-
-	bool loadContent() {
-		if (m_contentLoaded) return true;
-		bool b = m_fs->loadContents(this);
-		if (!b) return false;
-		m_length = m_children.size();
-		m_contentLoaded = true;
-		return b;
-	}
-
-	FSNode* getChild(u32int index) {
-		if (!m_contentLoaded)
-			if (!loadContent())
-				return NULL;
-		if (index >= m_children.size()) return NULL;
-		return m_children[index];
-	}
-
-	FSNode* getChild(String name) {
-		if (!m_contentLoaded)
-			if (!loadContent())
-				return NULL;
-		for (u32int i = 0; i < m_children.size(); i++) {
-			if (name == m_children[i]->getName())
-				return m_children[i];
-		}
-		return NULL;
-	}
-	FileNode* createFile(String name) {
-		FileNode* n = m_fs->createFile(this, name);
-		m_length = m_children.size();
-		return n;
-	}
-	DirectoryNode* createDirectory(String name) {
-		DirectoryNode* n = m_fs->createDirectory(this, name);
-		m_length = m_children.size();
-		return n;
-	}
+	bool removable();
+
+	bool loadContent();
+	FSNode* getChild(u32int index);
+	FSNode* getChild(const String& name);
+	FileNode* createFile(const String& name);
+	DirectoryNode* createDirectory(const String& name);
+	bool remove(FSNode* child);	//Removes a child node from this directory
 };
 
 #endif
diff --git a/Source/Kernel/VFS/FSNode.proto.h b/Source/Kernel/VFS/FSNode.proto.h
index fb24a82..bcf9393 100644
--- a/Source/Kernel/VFS/FSNode.proto.h
+++ b/Source/Kernel/VFS/FSNode.proto.h
@@ -19,16 +19,17 @@ class FSNode {
 	u32int m_length;
 	u32int m_permissions, m_uid, m_gid;
 	FileSystem *m_fs;
-	FSNode *m_parent;
-
+	FSNode	*m_parent;
+	
+	public:
 	FSNode(String name, FileSystem* fs, FSNode* parent, u32int length = 0, u32int permissions = 0777, 
 			u32int uid = 0, u32int gid = 0) :
 		m_name(name), m_length(length), m_permissions(permissions),
 		m_uid(uid), m_gid(gid), m_fs(fs), m_parent(parent) {}
-	
-	public:
+	virtual ~FSNode() {}
 
 	virtual u8int type() = 0;
+	virtual bool removable() = 0;	//True for files, false for non-empty directories, true otherwise
 	
 	const String& getName() { return m_name; }
 	u32int getLength() { return m_length; }
diff --git a/Source/Kernel/VFS/FileNode.class.h b/Source/Kernel/VFS/FileNode.class.h
index 29fab45..b3a3f67 100644
--- a/Source/Kernel/VFS/FileNode.class.h
+++ b/Source/Kernel/VFS/FileNode.class.h
@@ -9,7 +9,10 @@ class FileNode : public FSNode {
 			u32int uid = 0, u32int gid = 0): FSNode(name, fs, parent, length, permissions, uid, gid) {}
 
 	public:
+	virtual ~FileNode() {}
+
 	u8int type() { return NT_FILE; }
+	bool removable() { return true; }
 
 	u32int read(u64int position, u32int max_length, u8int *data) {
 		return m_fs->read(this, position, max_length, data);
diff --git a/Source/Kernel/VFS/FileSystem.proto.h b/Source/Kernel/VFS/FileSystem.proto.h
index 79bb84c..2f768a7 100644
--- a/Source/Kernel/VFS/FileSystem.proto.h
+++ b/Source/Kernel/VFS/FileSystem.proto.h
@@ -30,6 +30,7 @@ class FileSystem {
 	virtual bool loadContents(DirectoryNode* dir) = 0;
 	virtual FileNode* createFile(DirectoryNode* parent, String name) = 0;
 	virtual DirectoryNode* createDirectory(DirectoryNode* parent, String name) = 0;
+	virtual bool remove(DirectoryNode* parent, FSNode* node) = 0;
 };
 
 #endif
diff --git a/Source/Kernel/VFS/VFS.ns.h b/Source/Kernel/VFS/VFS.ns.h
index 622d120..1021d7c 100644
--- a/Source/Kernel/VFS/VFS.ns.h
+++ b/Source/Kernel/VFS/VFS.ns.h
@@ -1,15 +1,22 @@
 #ifndef DEF_VFS_NS_H
 #define DEF_VFS_NS_H
 
-#include <VFS/FSNode.proto.h>
+#include <VFS/DirectoryNode.class.h>
 #include <VFS/FileSystem.proto.h>
 
 typedef FileSystem* (* mountcallback)(Partition* partition);
 
 namespace VFS {
 	void registerMountCallback(mountcallback mcb);
-	bool mount(Partition* partition);
-	bool setRootNode(FSNode* root);
+	bool mount(Partition* partition, DirectoryNode mountpoint);
+	bool setRootNode(DirectoryNode* root);
+	DirectoryNode* getRootNode();
+
+	FSNode* find(const String& path, FSNode* start = 0);
+	FSNode* createFile(const String& path, FSNode* start = 0);
+	FSNode* createDirectory(const String& path, FSNode* start = 0);
+	bool remove(const String& path, FSNode* start = 0);	//Returns false for non-empty directories
+	String path(FSNode* node);	//Returns complete path for a node
 }
 
 #endif