More work on userland syscalls : Files are implemented.

TextFile now is a common (= kernel and userland) library.

39 files changed, 419 insertions, 153 deletions

diff --git a/Source/Applications/SampleApps/Makefile b/Source/Applications/SampleApps/Makefile
index a632f87..05f79b1 100644
--- a/Source/Applications/SampleApps/Makefile
+++ b/Source/Applications/SampleApps/Makefile
@@ -1,13 +1,13 @@
 .PHONY: clean, mrproper
 
 ASM = nasm
-ASMFLAGS = -f elf
+ASMFLAGS = -f bin
 
 CXX = g++
-CXXFLAGS = -nostartfiles -nostdlib -fno-exceptions -fno-rtti -I ../../Library/Common -I ../../Library/Interface -I ../../Library/Userland -D THIS_IS_MELON_USERLAND
+CXXFLAGS = -nostartfiles -nostdlib -ffreestanding -fno-exceptions -fno-rtti -I ../../Library/Common -I ../../Library/Interface -I ../../Library/Userland -D THIS_IS_MELON_USERLAND
 
 LD = ld
-LDFLAGS = -T ../../Library/Link.ld
+LDFLAGS = -T ../../Library/Link.ld -L ../../Library
 
 Applications = asmdemo cxxdemo
 
@@ -20,13 +20,11 @@ rebuild: mrproper all
 	echo "* Compiling $<..."
 	$(CXX) $(CXXFLAGS) -c $< -o $@.o
 	echo "* Linking $@.o..."
-	$(LD) $(LDFLAGS) ../../Library/Melon.o $@.o -o $@
+	$(LD) $(LDFLAGS) $@.o -o $@
 
 %: %.asm
 	echo "* Compiling $<..."
-	$(ASM) $(ASMFLAGS) -o $@.o $<
-	echo "* Linking $@.o..."
-	$(LD) $(LDFLAGS) $@.o -o $@
+	$(ASM) $(ASMFLAGS) -o $@ $<
 
 clean:
 	echo "* Removing object files..."
diff --git a/Source/Applications/SampleApps/cxxdemo.cpp b/Source/Applications/SampleApps/cxxdemo.cpp
index b9439ce..3d452e7 100644
--- a/Source/Applications/SampleApps/cxxdemo.cpp
+++ b/Source/Applications/SampleApps/cxxdemo.cpp
@@ -1,9 +1,10 @@
 #include <Syscall/Syscall.wtf.h>
-#include <WChar.class.h>
+#include <String.class.h>
 #include <Binding/VirtualTerminal.class.h>
 #include <Binding/Thread.class.h>
+#include <Binding/File.class.h>
 
-int main() {
+int main(const Vector<String>& args) {
 	outvt << "Enter some text plz : ";
 	String s = invt.readLine();
 	outvt << s;
diff --git a/Source/Applications/Shell/Help.txt b/Source/Applications/Shell/Help.txt
index c1209cf..0b42361 100644
--- a/Source/Applications/Shell/Help.txt
+++ b/Source/Applications/Shell/Help.txt
@@ -4,7 +4,7 @@
  - help     shows this
  - reboot   reboots your computer       root
  - halt     shuts down your computer    root
- - loadkeys loads a new keymap          root
+ - loadkeys loads a keymap              root
  - free     shows free amount of RAM
  - uptime   shows computer's uptime
  - run      runs a binary file
diff --git a/Source/Applications/Shell/Makefile b/Source/Applications/Shell/Makefile
index 0eeb620..bf81af6 100644
--- a/Source/Applications/Shell/Makefile
+++ b/Source/Applications/Shell/Makefile
@@ -1,10 +1,10 @@
 .PHONY: clean, mrproper
 
 CXX = g++
-CXXFLAGS = -nostartfiles -nostdlib -fno-exceptions -fno-rtti -I ../../Library/Common -I ../../Library/Interface -I ../../Library/Userland -D THIS_IS_MELON_USERLAND
+CXXFLAGS = -nostartfiles -nostdlib -ffreestanding -fno-exceptions -fno-rtti -I ../../Library/Common -I ../../Library/Interface -I ../../Library/Userland -D THIS_IS_MELON_USERLAND
 
 LD = ld
-LDFLAGS = -T ../../Library/Link.ld
+LDFLAGS = -T ../../Library/Link.ld -L ../../Library
 
 Objects = main.o \
 		  Shell.ns.o \
@@ -18,7 +18,7 @@ rebuild: mrproper all
 
 $(OutFile): $(Objects)
 	echo "* Linking $@..."
-	$(LD) $(LDFLAGS) ../../Library/Melon.o $^ -o $@
+	$(LD) $(LDFLAGS) $^ -o $@
 
 %.o: %.cpp
 	echo "* Compiling $<..."
diff --git a/Source/Applications/Shell/Shell-fs.ns.cpp b/Source/Applications/Shell/Shell-fs.ns.cpp
index b7e585a..1d52836 100644
--- a/Source/Applications/Shell/Shell-fs.ns.cpp
+++ b/Source/Applications/Shell/Shell-fs.ns.cpp
@@ -1,4 +1,5 @@
 #include "Shell.ns.h"
+#include <TextFile.class.h>
 
 namespace Shell {
 
@@ -77,4 +78,38 @@ void mkdir(Vector<String>& args) {
 	}
 }
 
+void cat(Vector<String>& args) {
+	if (args.size() == 1) outvt << "Meow.\n";
+	for (u32int i = 1; i < args.size(); i++) {
+		TextFile f(args[i], FM_READ, cwd);
+		if (f.valid() && f.validOpened()) {
+			while (!f.eof()) {
+				outvt << f.readLine() << "\n";
+			}
+			f.close();
+		} else {
+			outvt << "Error while reading from file " << args[i] << "\n";
+		}
+	}
+}
+
+void wf(Vector<String>& args) {
+	if (args.size() == 1) {
+		outvt << "No file to write !\n";
+	} else {
+		TextFile f(args[1], FM_TRUNCATE, cwd);
+		if (f.valid() && f.validOpened()) {
+			outvt << "Enter contents for file " << args[1] << " and end your entry with <CR>.<CR>\n";
+			String t = invt.readLine();
+			while (t != ".") {
+				f.write(t, true);
+				t = invt.readLine();
+			}
+			f.close();
+		} else {
+			outvt << "Error opening file.\n";
+		}
+	}
+}
+
 }
diff --git a/Source/Applications/Shell/Shell.ns.cpp b/Source/Applications/Shell/Shell.ns.cpp
index fe8c5f9..7213094 100644
--- a/Source/Applications/Shell/Shell.ns.cpp
+++ b/Source/Applications/Shell/Shell.ns.cpp
@@ -16,6 +16,8 @@ u32int run() {
 		{"pwd",		pwd},
 		{"rm",		rm},
 		{"mkdir",	mkdir},
+		{"cat", cat},
+		{"wf", wf},
 		{"",		0}
 	};
 
@@ -56,6 +58,14 @@ u32int run() {
 		} else if (cmd[0] == "reboot") {
 			Sys::reboot();
 			outvt << "Something went wrong.\n";
+		} else if (cmd[0] == "uptime") {
+			outvt << "Uptime : " << (s64int)Sys::uptime() << "s\n";
+		} else if (cmd[0] == "free") {
+			outvt << "Free RAM : " << (s64int)Sys::freeRam() << " Kio of " << (s64int)Sys::totalRam() << " Kio\n"; 
+		} else if (cmd[0] == "help") {
+			while (cmd.size() > 1) cmd.pop();
+			cmd.push("/Applications/Shell/Help.txt");
+			cat(cmd);
 		} else {
 			u32int i = 0;
 			bool found = false;
diff --git a/Source/Applications/Shell/Shell.ns.h b/Source/Applications/Shell/Shell.ns.h
index 56fdb46..a22c18d 100644
--- a/Source/Applications/Shell/Shell.ns.h
+++ b/Source/Applications/Shell/Shell.ns.h
@@ -12,4 +12,6 @@ namespace Shell {
 	extern void pwd(Vector<String>& args);
 	extern void rm(Vector<String>& args);
 	extern void mkdir(Vector<String>& args);
+	extern void cat(Vector<String>& args);
+	extern void wf(Vector<String>& args);
 }
diff --git a/Source/Applications/Shell/main.cpp b/Source/Applications/Shell/main.cpp
index 70da17b..66c4269 100644
--- a/Source/Applications/Shell/main.cpp
+++ b/Source/Applications/Shell/main.cpp
@@ -1,5 +1,5 @@
 #include "Shell.ns.h"
 
-int main() {
+int main(const Vector<String>& args) {
 	return Shell::run();
 }
diff --git a/Source/Kernel/Core/Log.ns.h b/Source/Kernel/Core/Log.ns.h
index d825f62..dc126dc 100644
--- a/Source/Kernel/Core/Log.ns.h
+++ b/Source/Kernel/Core/Log.ns.h
@@ -1,7 +1,7 @@
 #ifndef DEF_LOG_NS_H
 #define DEF_LOG_NS_H
 
-#include <VFS/TextFile.class.h>
+#include <TextFile.class.h>
 
 #define KL_PANIC 0
 #define KL_CRITICAL 1
diff --git a/Source/Kernel/Core/Sys.ns.cpp b/Source/Kernel/Core/Sys.ns.cpp
index 1b52c0f..e5dbdc0 100644
--- a/Source/Kernel/Core/Sys.ns.cpp
+++ b/Source/Kernel/Core/Sys.ns.cpp
@@ -5,6 +5,8 @@
 #include <SyscallManager/IDT.ns.h>
 #include <Sys.iface.h>
 #include <UserManager/Usr.ns.h>
+#include <MemoryManager/PhysMem.ns.h>
+#include <DeviceManager/Time.ns.h>
 
 #define DEBUGVT(x) SimpleVT *x = new SimpleVT(4, 56, 0, 15); x->map(); x->put('\n');
 
@@ -146,6 +148,9 @@ void halt() {
 u32int scall(u8int wat, u32int a, u32int b, u32int c, u32int d) {
 	if (wat == SYIF_HALT && ISROOT) halt();
 	if (wat == SYIF_REBOOT && ISROOT) reboot();
+	if (wat == SYIF_UPTIME) return Time::uptime();
+	if (wat == SYIF_TOTALRAM) return PhysMem::total() * 4;
+	if (wat == SYIF_FREERAM) return PhysMem::free() * 4;
 	return (u32int) - 1;
 }
 
diff --git a/Source/Kernel/Core/kmain.wtf.cpp b/Source/Kernel/Core/kmain.wtf.cpp
index d2f8c7b..76d8971 100644
--- a/Source/Kernel/Core/kmain.wtf.cpp
+++ b/Source/Kernel/Core/kmain.wtf.cpp
@@ -26,7 +26,6 @@
 #include <VFS/FileNode.class.h>
 #include <VFS/VFS.ns.h>
 #include <VFS/DirectoryNode.class.h>
-#include <VFS/TextFile.class.h>
 #include <Core/Log.ns.h>
 #include <Shell/KernelShell.class.h>
 
diff --git a/Source/Kernel/Makefile b/Source/Kernel/Makefile
index 4f332d6..301d64c 100644
--- a/Source/Kernel/Makefile
+++ b/Source/Kernel/Makefile
@@ -52,12 +52,13 @@ Objects = Core/loader.wtf.o \
 		../Library/Common/Heap.class.o \
 		../Library/Common/Heap-index.class.o \
 		../Library/Common/Mutex.class.o \
+		../Library/Common/TextFile.class.o \
 		VFS/Partition.class.o \
 		VFS/Part.ns.o \
 		VFS/VFS.ns.o \
 		VFS/FSNode-sc.proto.o \
 		VFS/File.class.o \
-		VFS/TextFile.class.o \
+		VFS/File-sc.class.o \
 		VFS/DirectoryNode.class.o \
 		UserManager/Usr.ns.o \
 		FileSystems/RamFS/RamFS.class.o \
@@ -94,6 +95,7 @@ $(OutFile): $(Objects)
  
 clean:
 	echo "* Removing object files..."
+	rm -rf $(Objects)
 	rm -rf *.o
 	rm -rf */*.o
 	rm -rf */*/*.o
diff --git a/Source/Kernel/Shell/KernelShell-fs.class.cpp b/Source/Kernel/Shell/KernelShell-fs.class.cpp
index f013f1b..bc7e137 100644
--- a/Source/Kernel/Shell/KernelShell-fs.class.cpp
+++ b/Source/Kernel/Shell/KernelShell-fs.class.cpp
@@ -115,6 +115,9 @@ void KernelShell::run(Vector<String>& args) {
 		} else {
 			p->setInVT(m_vt);
 			p->setOutVT(m_vt);
+			for (u32int i = 2; i < args.size(); i++) {
+				p->pushArg(args[i]);
+			}
 			p->start();
 			while (p->getState() != P_FINISHED) Task::currThread()->sleep(10);
 			delete p;
diff --git a/Source/Kernel/SyscallManager/Res.ns.cpp b/Source/Kernel/SyscallManager/Res.ns.cpp
index c554166..128f315 100644
--- a/Source/Kernel/SyscallManager/Res.ns.cpp
+++ b/Source/Kernel/SyscallManager/Res.ns.cpp
@@ -6,6 +6,7 @@
 #include <FSNode.iface.h>
 #include <Sys.iface.h>
 #include <TaskManager/Task.ns.h>
+#include <VFS/File.class.h>
 
 namespace Res {
 
@@ -21,6 +22,7 @@ static_call_t staticCalls[] = {
 	{PRIF_OBJTYPE, Process::scall},
 	{THIF_OBJTYPE, Thread::scall},
 	{FNIF_OBJTYPE, FSNode::scall},
+	{FLIF_OBJTYPE, File::scall},
 	{SYIF_IFID, Sys::scall},
 	{0, 0}
 };
diff --git a/Source/Kernel/TaskManager/Process.class.cpp b/Source/Kernel/TaskManager/Process.class.cpp
index 5859f86..a7e7d7c 100644
--- a/Source/Kernel/TaskManager/Process.class.cpp
+++ b/Source/Kernel/TaskManager/Process.class.cpp
@@ -6,6 +6,8 @@
 #include <Process.iface.h>
 #include <UserManager/Usr.ns.h>
 
+#define ISPARENT Task::currProcess()->getPid() == m_ppid
+
 namespace Mem {
 	extern Heap kheap;
 }
@@ -16,7 +18,8 @@ call_t Process::m_callTable[] = {
 	CALL1(PRIF_FREEPAGE, &Process::freePageSC),
 	CALL0(PRIF_GETPID, &Process::getPid),
 	CALL0(PRIF_GETPPID, &Process::getPpid),
-	CALL0(PRIF_GETCMDLINE, &Process::getCmdlineSC),
+	CALL0(PRIF_ARGC, &Process::argcSC),
+	CALL1(PRIF_ARGV, &Process::argvSC),
 	CALL0(0, 0)
 };
 
@@ -100,16 +103,20 @@ void Process::start() {
 	if (m_state == P_STARTING) m_state = P_RUNNING;
 }
 
+void Process::pushArg(const String& arg) {
+	m_arguments.push(arg);
+}
+
 void Process::exit() {
 	for (u32int i = 0; i < m_threads.size(); i++) {
 		delete m_threads[i];
 	}
 	m_threads.clear();
-	for (SimpleList<File*> *iter = m_fileDescriptors; iter != 0; iter = iter->next()) {
-		iter->v()->close(false);
-		delete iter->v();
+	while (m_fileDescriptors != 0) {
+		m_fileDescriptors->v()->close(false);
+		delete m_fileDescriptors->v();
+		m_fileDescriptors = m_fileDescriptors->delThis();
 	}
-	if (m_fileDescriptors != 0) delete m_fileDescriptors; //Will recursively delete whole list
 	m_state = P_FINISHED;
 }
 
@@ -177,20 +184,17 @@ u32int Process::allocPageSC(u32int pos) {
 	return 0;
 }
 
-u32int Process::getCmdlineSC() {
-	if (Usr::uid() == m_uid or ISROOT) {
-		String cmdline;
-		for (u32int i = 0; i < m_arguments.size(); i++) {
-			if (i != 0) cmdline += " ";
-			if (m_arguments[i].contains(" ")) {
-				cmdline += "'";
-				cmdline += m_arguments[i];
-				cmdline += "'";
-			} else {
-				cmdline += m_arguments[i];
-			}
-		}
-		return cmdline.serialize();
+u32int Process::argcSC() {
+	if (Usr::uid() == m_uid or ISROOT or ISPARENT) {
+		return (m_arguments.size());
+	}
+	return (u32int) - 1;
+}
+
+u32int Process::argvSC(u32int idx) {
+	if (idx >= m_arguments.size()) return (u32int) - 1;
+	if (Usr::uid() == m_uid or ISROOT or ISPARENT) {
+		return m_arguments[idx].serialize();
 	}
 	return (u32int) - 1;
 }
diff --git a/Source/Kernel/TaskManager/Process.class.h b/Source/Kernel/TaskManager/Process.class.h
index d0556e5..ec5a90d 100644
--- a/Source/Kernel/TaskManager/Process.class.h
+++ b/Source/Kernel/TaskManager/Process.class.h
@@ -53,7 +53,8 @@ class Process : public Ressource {
 	//System calls
 	static call_t m_callTable[];
 	u32int exitSC();
-	u32int getCmdlineSC();
+	u32int argcSC();
+	u32int argvSC(u32int);
 	u32int allocPageSC(u32int);
 	u32int freePageSC(u32int);
 	bool accessible();
@@ -69,6 +70,7 @@ class Process : public Ressource {
 	Heap& heap() { return *m_userHeap; }
 
 	void start();	//Starts thread execution - sets m_state to P_RUNNING if == P_STARTING
+	void pushArg(const String& arg);
 	void exit();	//Exits properly process by killing all threads and deleting file descriptors
 	void registerThread(Thread* t);	//Called when a thread starts
 	void threadFinishes(Thread* thread, u32int retval); //Called when a thread finishes
diff --git a/Source/Kernel/UserManager/Usr.ns.cpp b/Source/Kernel/UserManager/Usr.ns.cpp
index a551344..db371ae 100644
--- a/Source/Kernel/UserManager/Usr.ns.cpp
+++ b/Source/Kernel/UserManager/Usr.ns.cpp
@@ -1,9 +1,10 @@
 #include "Usr.ns.h"
 
+#include <Core/Log.ns.h>
 #include <UserManager/User.class.h>
 #include <SimpleList.class.h>
 #include <TaskManager/Task.ns.h>
-#include <VFS/TextFile.class.h>
+#include <TextFile.class.h>
 
 /*
  * Syntax for Users and Groups configuration files : one entry per line
@@ -29,6 +30,10 @@ void load() {
 			m_groups = m_groups->cons(Group(data[1], data[0].toInt()));
 		}
 	}
+	if (m_groups == 0) {
+		m_groups = m_groups->cons(Group("root", 0));	//In case, add a default group
+		Log::log(KL_WARNING, "Usr.ns : group file invalid, had to add default group.");
+	}
 
 	TextFile users("/System/Configuration/Users", FM_READ);
 	while (!users.eof()) {
@@ -38,6 +43,10 @@ void load() {
 			m_users = m_users->cons(User(data[1], data[4], group(data[2].toInt()), data[3], data[0].toInt()));
 		}
 	}
+	if (m_users == 0) {
+		m_users = m_users->cons(User("melon", "MelOS", group(0), "", 0));
+		Log::log(KL_WARNING, "Usr.ns : users file invalid, had to add default users.");
+	}
 }
 
 void save() {
diff --git a/Source/Kernel/VFS/FSNode-sc.proto.cpp b/Source/Kernel/VFS/FSNode-sc.proto.cpp
index 279303b..717ccef 100644
--- a/Source/Kernel/VFS/FSNode-sc.proto.cpp
+++ b/Source/Kernel/VFS/FSNode-sc.proto.cpp
@@ -35,9 +35,9 @@ u32int FSNode::scall(u8int wat, u32int a, u32int b, u32int c, u32int d) {
 		String* path = (String*)a;
 		FSNode* n;
 		if (b == 0) {
-			n = VFS::mkdir(*path);
+			n = VFS::createDirectory(*path, 0, true);
 		} else {
-			n = VFS::mkdir(*path, Res::get<DirectoryNode>(b, FNIF_OBJTYPE));
+			n = VFS::createDirectory(*path, Res::get<DirectoryNode>(b, FNIF_OBJTYPE), true);
 		}
 		if (n != 0) return n->resId();
 	}
diff --git a/Source/Kernel/VFS/File-sc.class.cpp b/Source/Kernel/VFS/File-sc.class.cpp
new file mode 100644
index 0000000..e5e8e25
--- /dev/null
+++ b/Source/Kernel/VFS/File-sc.class.cpp
@@ -0,0 +1,68 @@
+#include "File.class.h"
+#include <VFS/VFS.ns.h>
+#include <TaskManager/Task.ns.h>
+#include <FSNode.iface.h>
+#include <SyscallManager/Res.ns.h>
+
+u32int File::scall(u8int wat, u32int a, u32int b, u32int c, u32int d) {
+	if (wat == FLIF_SOPEN) {
+		String* name = (String*)a;
+		FSNode* start = Res::get<FSNode>(c, FNIF_OBJTYPE);
+		File* f = new File();
+		if (!f->open(*name, b, start, true)) {
+			delete f;
+		} else {
+			return f->resId();
+		}
+	}
+	return (u32int) - 1;
+}
+
+u32int File::closeSC() {
+	if (!valid()) return 1;
+	close();
+	return 0;
+}
+
+u32int File::validSC() {
+	return (valid() ? 1 : 0);
+}
+
+u32int File::readSC(u32int max_length, u32int ptr) {
+	if (!m_file->readable()) return 0;
+	return read(max_length, (u8int*)ptr);
+}
+
+u32int File::writeSC(u32int length, u32int ptr) {
+	if (!m_file->writable()) return 0;
+	return (write(length, (u8int*)ptr) ? 1 : 0);
+}
+
+u32int File::seekSC(u32int counta, u32int countb, u32int mode) {
+	union {
+		u32int a[2];
+		u64int x;
+	} wat = {{counta, countb}};
+	return (seek(wat.x, mode) ? 1 : 0);
+}
+
+u32int File::positionSC() {
+	u64int* w = (u64int*)Mem::mkXchgSpace(sizeof(u64int));
+	*w = position();
+	return (u32int)w;
+}
+
+u32int File::lengthSC() {
+	u64int* w = (u64int*)Mem::mkXchgSpace(sizeof(u64int));
+	*w = length();
+	return (u32int)w;
+}
+
+u32int File::eofSC() {
+	return (eof() ? 1 : 0);
+}
+
+bool File::accessible() {
+	if (ISROOT or Usr::uid() == m_process->getUid()) return true;
+	return false;
+}
diff --git a/Source/Kernel/VFS/File.class.cpp b/Source/Kernel/VFS/File.class.cpp
index fbaabbe..c5ddcd6 100644
--- a/Source/Kernel/VFS/File.class.cpp
+++ b/Source/Kernel/VFS/File.class.cpp
@@ -2,11 +2,23 @@
 #include <VFS/VFS.ns.h>
 #include <TaskManager/Task.ns.h>
 
-File::File() : m_file(NULL), m_valid(false), m_writable(false), m_position(0) {
+call_t File::m_callTable[] = {
+	CALL0(FLIF_CLOSE, &File::closeSC),
+	CALL0(FLIF_VALID, &File::validSC),
+	CALL2(FLIF_READ, &File::readSC),
+	CALL2(FLIF_WRITE, &File::writeSC),
+	CALL3(FLIF_SEEK, &File::seekSC),
+	CALL0(FLIF_POSITION, &File::positionSC),
+	CALL0(FLIF_LENGTH, &File::lengthSC),
+	CALL0(FLIF_EOF, &File::eofSC),
+	CALL0(0, 0)
+};
+
+File::File() : Ressource(FLIF_OBJTYPE, m_callTable), m_file(NULL), m_valid(false), m_writable(false), m_position(0) {
 }
 
 File::File(String filename, u8int mode, FSNode* start) :
-	m_file(NULL), m_valid(false), m_writable(false), m_position(0) {
+	Ressource(FLIF_OBJTYPE, m_callTable), m_file(NULL), m_valid(false), m_writable(false), m_position(0) {
 	open(filename, mode, start);
 }
 
@@ -14,13 +26,13 @@ File::~File() {
 	close();
 }
 
-bool File::open(String filename, u8int mode, FSNode* start) {
+bool File::open(String filename, u8int mode, FSNode* start, bool vrfyperm) {
 	if (m_valid) return false;
 
 	FSNode* node = VFS::find(filename, start);
 	if (node == NULL){
 	   	if (mode == FM_READ) return false;
-		node = VFS::createFile(filename, start);
+		node = VFS::createFile(filename, start, vrfyperm);
 		if (node == 0) return false;
 	}
 	if (node->type() != NT_FILE) return false;
@@ -28,7 +40,9 @@ bool File::open(String filename, u8int mode, FSNode* start) {
 	m_file = (FileNode*) node;
 
 	m_writable = (mode != FM_READ);
-	if (!m_file->writable() and m_writable) return false;
+	if (vrfyperm and m_writable and !m_file->writable()) return false;
+	if (vrfyperm and !m_file->readable()) return false;
+	if (!m_file->fsWritable() and m_writable) return false;
 
 	if (mode == FM_READ or mode == FM_REPLACE) {
 		m_position = 0;
@@ -44,7 +58,8 @@ bool File::open(String filename, u8int mode, FSNode* start) {
 	else
 		m_file->m_writers++;
 
-	Task::currProcess()->registerFileDescriptor(this);
+	m_process = Task::currProcess();
+	m_process->registerFileDescriptor(this);
 	m_valid = true;
 	return true;
 }
@@ -135,5 +150,5 @@ void File::close(bool unregisterFD) {
 	m_file = NULL;
 	m_position = 0;
 	m_writable = false;
-	if (unregisterFD) Task::currProcess()->unregisterFileDescriptor(this);
+	if (unregisterFD) m_process->unregisterFileDescriptor(this);
 }
diff --git a/Source/Kernel/VFS/File.class.h b/Source/Kernel/VFS/File.class.h
index f5d0c56..00b92b6 100644
--- a/Source/Kernel/VFS/File.class.h
+++ b/Source/Kernel/VFS/File.class.h
@@ -3,35 +3,40 @@
 
 #include <VFS/FileNode.class.h>
 #include <ByteArray.class.h>
+#include <File.iface.h>
+#include <SyscallManager/Ressource.class.h>
+class Process;
 
-enum {
-	FM_READ = 0,		//Open for read, put cursor at beginning
-	FM_TRUNCATE = 1,	//Open for write, truncating file before
-	FM_APPEND = 2,		//Open for write, put cursor at end
-	FM_REPLACE = 3		//Open for write, put cursor at beginning
-};
-
-enum {
-	SM_FORWARD = 0,		//Seek from actual position
-	SM_BACKWARD = 1,	//Seek from actual position, backward
-	SM_BEGINNING = 2,	//Seek from start of file
-	SM_END = 3,			//Seek from end of file
-};
-
-class File {
+class File : public Ressource {
 	protected:
 	FileNode* m_file;
 	bool m_valid;		//Is a file opened and valid ?
 	bool m_writable;	//Is file opened for write ?
 	u64int m_position;
+	Process* m_process;
+	
+	//Syscalls
+	static call_t m_callTable[];
+	u32int closeSC();
+	u32int validSC();
+	u32int readSC(u32int, u32int);
+	u32int writeSC(u32int, u32int);
+	u32int seekSC(u32int, u32int, u32int);
+	u32int positionSC();
+	u32int lengthSC();
+	u32int eofSC();
+	bool accessible();
 
 	public:
+	static u32int scall(u8int, u32int, u32int, u32int, u32int);
+
 	File();
 	File(String filename, u8int mode = FM_READ, FSNode* start = 0);
 	virtual ~File();
 
-	bool open(String filename, u8int mode = FM_READ, FSNode* start = 0);
+	bool open(String filename, u8int mode = FM_READ, FSNode* start = 0, bool vrfyperm = false);
 	void close(bool unregisterFD = true);	//unregisterFD = whether or not we must unregister the file descriptor from process
+	bool valid() { return m_valid; }
 
 	u32int read(u32int max_length, u8int *data);
 	bool write(u32int length, u8int *data);
@@ -49,8 +54,6 @@ class File {
 	u64int position() { return m_position; }
 	u64int length() { return m_file->getLength(); }
 	bool eof();
-
-	bool valid() { return m_valid; }
 };
 
 #endif
diff --git a/Source/Kernel/VFS/FileNode.class.h b/Source/Kernel/VFS/FileNode.class.h
index 7ab617f..e99ef5e 100644
--- a/Source/Kernel/VFS/FileNode.class.h
+++ b/Source/Kernel/VFS/FileNode.class.h
@@ -19,7 +19,7 @@ class FileNode : public FSNode {
 	u8int type() { return NT_FILE; }
 	bool removable() { return true; }
 	bool used() { return (m_readers != 0 or m_writers != 0); }
-	bool writable() { return m_fs->isWritable(); }
+	bool fsWritable() { return m_fs->isWritable(); }
 
 	u32int read(u64int position, u32int max_length, u8int *data) {
 		return m_fs->read(this, position, max_length, data);
diff --git a/Source/Kernel/VFS/TextFile.class.cpp b/Source/Kernel/VFS/TextFile.class.cpp
deleted file mode 100644
index a877392..0000000
--- a/Source/Kernel/VFS/TextFile.class.cpp
+++ /dev/null
@@ -1,21 +0,0 @@
-#include "TextFile.class.h"
-
-bool TextFile::write(String str, bool addnl) {
-	ByteArray a(str, m_encoding);
-	if (addnl) a += (u8int)'\n';
-	return File::write(a);
-}
-
-String TextFile::readLine(char separator) {
-	ByteArray buffer;
-	while (1) {
-		char c;
-		if (read(1, (u8int*)&c) == 0) {
-			return buffer.toString(m_encoding);
-		}
-		if (c == separator) {
-			return buffer.toString(m_encoding);
-		}
-		buffer += (u8int)c;
-	}
-}
diff --git a/Source/Kernel/VFS/VFS.ns.cpp b/Source/Kernel/VFS/VFS.ns.cpp
index fdfc265..e95b911 100644
--- a/Source/Kernel/VFS/VFS.ns.cpp
+++ b/Source/Kernel/VFS/VFS.ns.cpp
@@ -39,7 +39,7 @@ FSNode* find(const String& path, FSNode* start) {
 	return node;
 }
 
-FSNode* createFile(const String& path, FSNode* start) {
+FSNode* createFile(const String& path, FSNode* start, bool vrfyperm) {
 	if (find(path, start) != NULL) return NULL;	//Something already has that name.
 	if (start == 0) start = rootNode;
 
@@ -65,13 +65,12 @@ FSNode* createFile(const String& path, FSNode* start) {
 	}
 
 	if (node->type() == NT_DIRECTORY) {
-		return ((DirectoryNode*)node)->createFile(name);
-	} else {
-		return NULL;
+		if ((vrfyperm && node->writable()) or !vrfyperm) return ((DirectoryNode*)node)->createFile(name);
 	}
+	return NULL;
 }
 
-FSNode* createDirectory(const String& path, FSNode* start) {
+FSNode* createDirectory(const String& path, FSNode* start, bool vrfyperm) {
 	if (find(path, start) != NULL) return NULL;	//Something already has that name.
 	if (start == 0) start = rootNode;
 
@@ -97,40 +96,8 @@ FSNode* createDirectory(const String& path, FSNode* start) {
 	}
 
 	if (node->type() == NT_DIRECTORY) {
-		return ((DirectoryNode*)node)->createDirectory(name);
-	} else {
-		return NULL;
+		if ((vrfyperm && node->writable()) or !vrfyperm) return ((DirectoryNode*)node)->createDirectory(name);
 	}
-}
-
-//Same as createDirectory but checks for parent directory permissions for current process
-FSNode* mkdir(const String& path, FSNode* start) {
-	if (find(path, start) != NULL) return NULL;	//Something already has that name.
-	if (start == 0) start = rootNode;
-
-	Vector<String> p = path.split("/");
-	String name = p.back();
-	p.pop();
-
-	FSNode* node = start;
-	if (!path.empty()) {
-		if (p[0].empty()) node = rootNode;
-		for (u32int i = 0; i < p.size(); i++) {
-			if (p[i] == "..") {
-				node = node->getParent();
-			} else if (!p[i].empty() and p[i] != ".") {
-				if (node->type() == NT_DIRECTORY) {
-					node = ((DirectoryNode*)node)->getChild(p[i]);
-				} else {
-					node = NULL;
-				}
-			}
-			if (node == NULL) return node;
-		}
-	}
-
-	if (node->type() == NT_DIRECTORY)
-		if (node->writable()) return ((DirectoryNode*)node)->createDirectory(name);
 	return NULL;
 }
 
diff --git a/Source/Kernel/VFS/VFS.ns.h b/Source/Kernel/VFS/VFS.ns.h
index 63229bf..f1d628f 100644
--- a/Source/Kernel/VFS/VFS.ns.h
+++ b/Source/Kernel/VFS/VFS.ns.h
@@ -13,9 +13,8 @@ namespace VFS {
 	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);
-	FSNode* mkdir(const String& path, FSNode* start = 0);	//Same as createDirectory, except it checks for parent directory writablilty by current process
+	FSNode* createFile(const String& path, FSNode* start = 0, bool vrfyperm = false);
+	FSNode* createDirectory(const String& path, FSNode* start = 0, bool vrfyperm = false);
 	bool remove(FSNode* node);
 	bool remove(const String& path, FSNode* start = 0);	//Returns false for non-empty directories
 	String path(FSNode* node);	//Returns complete path for a node
diff --git a/Source/Kernel/VTManager/FileVT.class.h b/Source/Kernel/VTManager/FileVT.class.h
index 61f4d6f..ed3e224 100644
--- a/Source/Kernel/VTManager/FileVT.class.h
+++ b/Source/Kernel/VTManager/FileVT.class.h
@@ -1,7 +1,7 @@
 #ifndef DEF_FILEVT_CLASS_H
 #define DEF_FILEVT_CLASS_H
 
-#include <VFS/TextFile.class.h>
+#include <TextFile.class.h>
 #include <VTManager/VirtualTerminal.proto.h>
 
 class FileVT : public VirtualTerminal {
diff --git a/Source/Library/Common/TextFile.class.cpp b/Source/Library/Common/TextFile.class.cpp
new file mode 100644
index 0000000..040e2d7
--- /dev/null
+++ b/Source/Library/Common/TextFile.class.cpp
@@ -0,0 +1,30 @@
+#include "TextFile.class.h"
+
+bool TextFile::write(String str, bool addnl) {
+	ByteArray a(str, m_encoding);
+	if (addnl) a += (u8int)'\n';
+	return File::write(a);
+}
+
+String TextFile::readLine(char separator) {
+	const u32int bufflen = 512;
+	String ret;
+	ByteArray temp;
+	while (1) {
+		temp.resize(bufflen);
+		u32int r = read(temp);
+		u32int l = r;
+		for (u32int i = 0; i < r; i++) {
+			if (temp[i] == separator) {
+				l = i;
+				temp.resize(i);
+				break;
+			}
+		}
+		ret += temp.toString(m_encoding);
+		if (l != r or r != bufflen) {
+			if (l != r) seek((r - l) - 1, SM_BACKWARD);
+			return ret;
+		}
+	}
+}
diff --git a/Source/Kernel/VFS/TextFile.class.h b/Source/Library/Common/TextFile.class.h
index a0cd505..3749b6a 100644
--- a/Source/Kernel/VFS/TextFile.class.h
+++ b/Source/Library/Common/TextFile.class.h
@@ -1,16 +1,26 @@
 #ifndef DEF_TEXTFILE_CLASS_H
 #define DEF_TEXTFILE_CLASS_H
 
+#ifdef THIS_IS_MELON_KERNEL
 #include <VFS/File.class.h>
+#else
+#include <Binding/File.class.h>
+#endif
 
 class TextFile : public File {
 	private:
 	u8int m_encoding;
 
 	public:
+#ifdef THIS_IS_MELON_KERNEL
 	TextFile(u8int encoding = UE_UTF8) : File() { m_encoding = encoding; }
 	TextFile(String filename, u8int mode = FM_READ, FSNode* start = 0, u8int encoding = UE_UTF8)
 	   	: File(filename, mode, start) { m_encoding = encoding; }
+#else
+	TextFile(u32int id, u8int encoding = UE_UTF8) : File(id) { m_encoding = encoding; }
+	TextFile(String filename, u8int mode = FM_READ, FSNode start = FSNode(0), u8int encoding = UE_UTF8)
+	   	: File(filename, mode, start) { m_encoding = encoding; }
+#endif
 	~TextFile() {}
 
 	void setEncoding(u8int encoding = UE_UTF8) { m_encoding = encoding; }
diff --git a/Source/Library/Interface/File.iface.h b/Source/Library/Interface/File.iface.h
new file mode 100644
index 0000000..e1030b8
--- /dev/null
+++ b/Source/Library/Interface/File.iface.h
@@ -0,0 +1,33 @@
+#ifndef DEF_FILE_IFACE_H
+#define DEF_FILE_IFACE_H
+
+enum {
+	FM_READ = 0,		//Open for read, put cursor at beginning
+	FM_TRUNCATE = 1,	//Open for write, truncating file before
+	FM_APPEND = 2,		//Open for write, put cursor at end
+	FM_REPLACE = 3		//Open for write, put cursor at beginning
+};
+
+enum {
+	SM_FORWARD = 0,		//Seek from actual position
+	SM_BACKWARD = 1,	//Seek from actual position, backward
+	SM_BEGINNING = 2,	//Seek from start of file
+	SM_END = 3,			//Seek from end of file
+};
+
+#define FLIF_OBJTYPE 0x13
+
+#define FLIF_SOPEN 0x01
+
+#define FLIF_CLOSE 0x05
+#define FLIF_VALID 0x06
+
+#define FLIF_READ 0x0A
+#define FLIF_WRITE 0x0B
+
+#define FLIF_SEEK 0x10
+#define FLIF_POSITION 0x11
+#define FLIF_LENGTH 0x12
+#define FLIF_EOF 0x13
+
+#endif
diff --git a/Source/Library/Interface/Process.iface.h b/Source/Library/Interface/Process.iface.h
index b79639d..52543aa 100644
--- a/Source/Library/Interface/Process.iface.h
+++ b/Source/Library/Interface/Process.iface.h
@@ -11,6 +11,8 @@
 #define PRIF_FREEPAGE 0x03
 #define PRIF_GETPID 0x04
 #define PRIF_GETPPID 0x05
-#define PRIF_GETCMDLINE 0x06
+
+#define PRIF_ARGC 0x10
+#define PRIF_ARGV 0x11
 
 #endif
diff --git a/Source/Library/Interface/Sys.iface.h b/Source/Library/Interface/Sys.iface.h
index c734f52..bebab41 100644
--- a/Source/Library/Interface/Sys.iface.h
+++ b/Source/Library/Interface/Sys.iface.h
@@ -5,5 +5,8 @@
 
 #define SYIF_HALT 0x1
 #define SYIF_REBOOT 0x2
+#define SYIF_UPTIME 0x3
+#define SYIF_TOTALRAM 0x4
+#define SYIF_FREERAM 0x5
 
 #endif
diff --git a/Source/Library/Link.ld b/Source/Library/Link.ld
index f06f568..68591fd 100644
--- a/Source/Library/Link.ld
+++ b/Source/Library/Link.ld
@@ -1,4 +1,5 @@
 ENTRY (start)
+INPUT (Melon.o)
 
 SECTIONS{
     . = 0x10000000;
diff --git a/Source/Library/Makefile b/Source/Library/Makefile
index 7091116..5a7a039 100644
--- a/Source/Library/Makefile
+++ b/Source/Library/Makefile
@@ -1,7 +1,7 @@
 .PHONY: clean, mrproper
 
 CXX = g++
-CXXFLAGS = -nostartfiles -nostdlib -fno-exceptions -fno-rtti -I Common -I Userland -I Interface -D THIS_IS_MELON_USERLAND
+CXXFLAGS = -nostartfiles -nostdlib -ffreestanding -fno-exceptions -fno-rtti -I Common -I Userland -I Interface -D THIS_IS_MELON_USERLAND
 
 ASM = nasm
 ASMFLAGS = -f elf
@@ -16,7 +16,8 @@ Objects = Common/WChar.class.uo \
 		  Common/Heap.class.uo \
 		  Common/Heap-index.class.uo \
 		  Common/String.class.uo \
-		  Userland/Binding/Sys.ns.uo \
+		  Common/TextFile.class.uo \
+		  Common/ByteArray.class.uo \
 		  Userland/Syscall/Syscall.wtf.uo \
 		  Userland/Syscall/RessourceCaller.class.uo \
 		  Userland/Start.uo
diff --git a/Source/Library/Userland/Binding/FSNode.class.h b/Source/Library/Userland/Binding/FSNode.class.h
index 6a860ea..a7adbc0 100644
--- a/Source/Library/Userland/Binding/FSNode.class.h
+++ b/Source/Library/Userland/Binding/FSNode.class.h
@@ -2,6 +2,7 @@
 #define DEF_FSNODE_CLASS_H
 
 #include <Syscall/RessourceCaller.class.h>
+#include <String.class.h>
 #include <FSNode.iface.h>
 
 class FSNode : public RessourceCaller {
diff --git a/Source/Library/Userland/Binding/File.class.h b/Source/Library/Userland/Binding/File.class.h
new file mode 100644
index 0000000..4d1ac16
--- /dev/null
+++ b/Source/Library/Userland/Binding/File.class.h
@@ -0,0 +1,68 @@
+#ifndef DEF_FILE_CLASS_H
+#define DEF_FILE_CLASS_H
+
+#include <File.iface.h>
+#include <Binding/FSNode.class.h>
+#include <Syscall/RessourceCaller.class.h>
+#include <Binding/VirtualTerminal.class.h>
+#include <ByteArray.class.h>
+
+class File : public RessourceCaller {
+	public:
+	File(String name, u8int mode, FSNode start = FSNode(0)) :
+   		RessourceCaller(sCall(FLIF_OBJTYPE, FLIF_SOPEN, (u32int)&name, mode, start.resId()), FLIF_OBJTYPE) {
+	}
+	File(u32int id) : RessourceCaller(id, FLIF_OBJTYPE) {}
+
+	void close() {
+		doCall(FLIF_CLOSE);
+	}
+	bool validOpened() {
+		return (doCall(FLIF_VALID) != 0);
+	}
+	u32int read(u32int max_length, u8int *ptr) {
+		return (doCall(FLIF_READ, max_length, (u32int)ptr));
+	}
+	bool write(u32int length, u8int* ptr) {
+		return (doCall(FLIF_WRITE, length, (u32int)ptr) != 0);
+	}
+	u32int read(ByteArray &data) {
+		if (!valid()) {
+			data.clear();
+			return 0;
+		}
+		u32int l = read(data.size(), (u8int*)data);
+		if (l != data.size()) data.resize(l);
+		return l;
+	}
+	bool write(ByteArray &data) {
+		if (!valid()) return false;
+		return write(data.size(), (u8int*)data);
+	}
+
+	template <typename T> bool read(T* elem) {
+		return (read(sizeof(T), (u8int*)elem) == sizeof(T));
+	}
+	template <typename T> bool write(T* elem) {
+		return write(sizeof(T), (u8int*)elem);
+	}
+
+	bool seek(u64int count, u8int mode) {
+		union {
+			u64int x;
+			u32int a[2];
+		} wat = {count};
+		return (doCall(FLIF_SEEK, wat.a[0], wat.a[1], mode) != 0);
+	}
+	u64int position() {
+		return *((u64int*)doCall(FLIF_POSITION));
+	}
+	u64int length() {
+		return *((u64int*)doCall(FLIF_LENGTH));
+	}
+	bool eof() {
+		return (doCall(FLIF_EOF) != 0);
+	}
+};
+
+#endif
diff --git a/Source/Library/Userland/Binding/Process.class.h b/Source/Library/Userland/Binding/Process.class.h
index ddca6be..9687ea9 100644
--- a/Source/Library/Userland/Binding/Process.class.h
+++ b/Source/Library/Userland/Binding/Process.class.h
@@ -29,8 +29,11 @@ class Process : public RessourceCaller {
 	u32int getPpid() {
 		return doCall(PRIF_GETPPID);
 	}
-	String getCmdline() {
-		return String::unserialize(doCall(PRIF_GETCMDLINE));
+	u32int argc() {
+		return doCall(PRIF_ARGC);
+	}
+	String argv(u32int idx) {
+		return String::unserialize(doCall(PRIF_ARGV, idx));
 	}
 };
 
diff --git a/Source/Library/Userland/Binding/Sys.ns.cpp b/Source/Library/Userland/Binding/Sys.ns.cpp
deleted file mode 100644
index 7083e56..0000000
--- a/Source/Library/Userland/Binding/Sys.ns.cpp
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <Sys.iface.h>
-#include "Sys.ns.h"
-#include <Syscall/RessourceCaller.class.h>
-
-namespace Sys {
-
-void halt() {
-	RessourceCaller::sCall(SYIF_IFID, SYIF_HALT);
-}
-
-void reboot() {
-	RessourceCaller::sCall(SYIF_IFID, SYIF_REBOOT);
-}
-
-}
diff --git a/Source/Library/Userland/Binding/Sys.ns.h b/Source/Library/Userland/Binding/Sys.ns.h
index 3a8426b..eb09504 100644
--- a/Source/Library/Userland/Binding/Sys.ns.h
+++ b/Source/Library/Userland/Binding/Sys.ns.h
@@ -1,9 +1,31 @@
 #ifndef DEF_SYS_NS_H
 #define DEF_SYS_NS_H
 
+#include <Sys.iface.h>
+#include <Syscall/RessourceCaller.class.h>
+
 namespace Sys {
-	void halt();
-	void reboot();
+	
+inline void halt() {
+	RessourceCaller::sCall(SYIF_IFID, SYIF_HALT);
+}
+
+inline void reboot() {
+	RessourceCaller::sCall(SYIF_IFID, SYIF_REBOOT);
+}
+
+inline u32int uptime() {	//Returns uptime in seconds
+	return RessourceCaller::sCall(SYIF_IFID, SYIF_UPTIME);
+}
+
+inline u32int totalRam() { 	//Returns total amount of RAM in Ko
+	return RessourceCaller::sCall(SYIF_IFID, SYIF_TOTALRAM);
+}
+
+inline u32int freeRam() { 	//Returns free amount of RAM in Ko
+	return RessourceCaller::sCall(SYIF_IFID, SYIF_FREERAM);
+}
+
 }
 
 #endif
diff --git a/Source/Library/Userland/Start.cpp b/Source/Library/Userland/Start.cpp
index dee7da6..be4f81e 100644
--- a/Source/Library/Userland/Start.cpp
+++ b/Source/Library/Userland/Start.cpp
@@ -13,7 +13,7 @@ Heap heap;
 
 VirtualTerminal invt(0), outvt(0);
 
-int main();
+int main(const Vector<String>& args);
 
 extern "C" void start() {
 	//Call static constructors
@@ -24,7 +24,11 @@ extern "C" void start() {
 	heap.create(0x40000000, 0x00100000, 0x00004000);	//Initially create a 1M heap with 16ko index
 	invt = VirtualTerminal::getIn(); outvt = VirtualTerminal::getOut();
 
-	u32int r = main();
+	u32int argc = Process::get().argc();
+	Vector<String> args(argc);
+	for (u32int i = 0; i < argc; i++) args[i] = Process::get().argv(i);
+
+	u32int r = main(args);
 
 	//Call static destructors 
     for(u32int * call = &start_dtors; call < &end_dtors; call++) {