manually create nt symlinks

CMakeLists.txt

@@ -274,7 +274,7 @@ add_custom_command(OUTPUT lindows_c.img
 	COMMAND ${CoreUtils_Mkdir_EXECUTABLE} ARGS lindows_c/Windows/System32/LNXConfig
 	COMMAND ${CoreUtils_Mkdir_EXECUTABLE} ARGS lindows_c/Windows/GRUB
 	COMMAND ${CoreUtils_Mkdir_EXECUTABLE} ARGS lindows_c/Windows/GRUB/x86_64-efi
-
+	COMMAND ${CoreUtils_Mkdir_EXECUTABLE} ARGS 'lindows_c/Windows/Temporary Files'
 	# grub stuff
 	COMMAND ${CoreUtils_Copy_EXECUTABLE} ARGS ${CMAKE_CURRENT_BINARY_DIR}/grub/lib/grub/x86_64-efi/* lindows_c/Windows/GRUB/x86_64-efi
 	COMMAND ${CoreUtils_Copy_EXECUTABLE} ARGS ${CMAKE_CURRENT_SOURCE_DIR}/src/grub/grub.cfg lindows_c/Windows/GRUB/grub.cfg

README

@@ -0,0 +1,3 @@
+== NAMING ==
+
+Pii: Preinit internal core routines

lsmss/main.cxx

@@ -2,10 +2,13 @@
 #include <cstring>
 #include <iostream>
 #include <string>
+#include <filesystem>
 
 #include <unistd.h>
+#include <errno.h>
 
 #include <sys/wait.h>
+#include <sys/mount.h>
 
 /**
  * execute a program from an absolute path
@@ -13,7 +16,7 @@
  * \param path absolute path to program (duh)
  * \return program return value, 1 if it does not exist or -1 on error
  */
-int execute(const std::string& path) {
+int Pii_ExecuteProgram(const std::string& path) {
 	if (pid_t child = fork()) {
 		int exitcode = -1;
 		waitpid(child, &exitcode, 0);
@@ -28,21 +31,48 @@ int execute(const std::string& path) {
 	}
 }
 
+/**
+ * Abort the boot process and drop the user into a recovery shell
+ */
+[[noreturn]]
+void Pii_AbortBoot() {
+	std::cout << "Unable to complete preinitialization. You have been dropped into a minimal recovery environment. Good luck." << std::endl;
+	Pii_ExecuteProgram("/Windows/System32/bash.exe");
+	std::exit(1);
+}
+
 int main() {
-	bool ok = true;
+	// create temporary files
+	std::cout << "Mounting temporary filesystems\n";
+	if (mount("tmpfs", "/Windows/Temporary Files/", "tmpfs", 0, "") < 0) {
+		perror("mount");
+		Pii_AbortBoot();
+	}
+
+	// we need this because we mount as readonly in preinit so that we can prep the system
+	// and load the user mode ntfs driver
+	// std::cout << "Creating system32 overlay for preinit\n";
+	// std::filesystem::create_directory("/Windows/Temporary Files/System32OverlayUD");
+	// std::filesystem::create_directory("/Windows/Temporary Files/System32OverlayWD");
+	// if (mount("overlay", "/Windows/System32/", "overlay", 0, "lowerdir=/Windows/System32,upperdir=/Windows/Temporary Files/System32OverlayUD,workdir=/Windoes/Temporary Files/System32OverlayWD") < 0) {
+	//	perror("mount");
+	//	Pii_AbortBoot();
+	// }
+
+	// oh wow !
+	// std::cout << "Symlimking well known library names\n";
 
 	// dynamic linking fun
 	std::cout << "Regenerating dynamic linker cache\n";
-	// ok = execute("/Windows/System32/ldconfig.exe") == 0;
+	// Pii_ExecuteProgram("/Windows/System32/ldconfig.exe");
 
-	// we are never ok
-	ok = false;
-
-	// failure :>
-	if (!ok) {
-		std::cout << "Unable to complete preinitialization. You have been dropped into a minimal recovery environment. Good luck" << std::endl;
-		execute("/Windows/System32/bash.exe");
+	// boot still failed
+	for (const auto& ent : std::filesystem::directory_iterator("/Windows/System32")) {
+		std::cout << ent << " s:" << ent.is_symlink() << " d:" << ent.is_directory() << "\n";
 	}
 
+	// we are never ok
+	Pii_AbortBoot();
+	
 	return 0;
 }

scripts/copylib

@@ -6,7 +6,25 @@ find $1/bin $1/lib -type d | sed -r 's/'$1'\/(bin|lib)\///;Tn;s/^/mkdir lindows_
 find $1/bin -type f | sed -r 's/'$1'\/bin\/(.*)/cp '$1'\/bin\/\1 lindows_c\/Windows\/System32\/\1.exe/;e' > /dev/null
 find $1/lib -type f | sed -r 's/'$1'\/lib\/(.*)/cp '$1'\/lib\/\1 lindows_c\/Windows\/System32\/\1/;e' > /dev/null
 
-# copy lib links
+# ntfs-3g cant seem to figure out ntfs symlinks, its 1500 lines of code for reparse points dont even work
+# with symlinks, so we have to build the reparse point and do it ourselves
 for lib in $(cd $1/lib && find -type l); do
-	ln -sr "lindows_c/Windows/System32/$(readlink $1/lib/$lib)" "lindows_c/Windows/System32/$lib"
+	WPATH="$(echo -n $(readlink "$1/lib/$lib"))"
+	LPATH="$(echo -n '/Windows/System32/'"$WPATH" | sed -E 's/(.)/\1\\x00/g;s/\//\\\\/g')" # sed -E 's/(.)/\\0\1/g');
+	LPATHL=$(( 36 + ${#WPATH} * 2 ));
+
+	LPATHL1=$(printf "%o" $((($LPATHL >> 8 ) & 255 )) );
+	LPATHL0=$(printf "%o" $((($LPATHL      ) & 255 )) );
+
+	LBUF="\\x00\\x00\\$LPATHL0\\$LPATHL1\\x00\\x00\\$LPATHL0\\$LPATHL1\\x00\\x00\\x00\\x00$LPATH"
+	LBUFL=$(( 12 + $LPATHL ))
+	LBUFL1=$(printf "%o" $((($LBUFL >> 8) & 255 )) );
+	LBUFL0=$(printf "%o" $((($LBUFL     ) & 255 )) );
+
+	touch "lindows_c/Windows/System32/$lib";
+	setfattr -h -n system.ntfs_reparse_data \
+		-v "0S$(printf "\x0C\\x00\\x00\xA0\\$LBUFL0\\$LBUFL1\\x00\\x00$LBUF" | base64 -w0)"\
+		"lindows_c/Windows/System32/$lib";
+
+	#ln -sr "lindows_c/Windows/System32/$(readlink $1/lib/$lib)" "lindows_c/Windows/System32/$lib"
 done

src/grub/grub.cfg

@@ -2,5 +2,5 @@
 clear
 
 # boot  
-linux /Windows/vmlinux.exe console=tty0 console=ttyS0 root=PARTUUID=48d29da8-2ff8-4f23-ba1a-0e8ccfc329e2 rw init=/Windows/System32/lsmss.exe
+linux /Windows/vmlinux.exe console=tty0 console=ttyS0 root=PARTUUID=48d29da8-2ff8-4f23-ba1a-0e8ccfc329e2 init=/Windows/System32/lsmss.exe
 boot