bootloader/.gitignore

@@ -0,0 +1,3 @@
+test.img
+build/
+installer/build/

bootloader/CMakeLists.txt

@@ -1,3 +1,18 @@
 cmake_minimum_required(VERSION 3.26)
 
-add_subdirectory(bios)
+project(bootloader ASM)
+
+set(BOOTLOADER_SOURCES
+	boot.S
+	command_line.S
+	disk.S
+	elf.S
+	ext2.S
+	framebuffer.S
+	memory_map.S
+	utils.S
+)
+
+add_executable(bootloader ${BOOTLOADER_SOURCES})
+target_link_options(bootloader PUBLIC LINKER:-T,${CMAKE_CURRENT_SOURCE_DIR}/linker.ld)
+target_link_options(bootloader PUBLIC -nostdlib)

bootloader/bios/CMakeLists.txt

@@ -1,18 +0,0 @@
-cmake_minimum_required(VERSION 3.26)
-
-project(bootloader ASM)
-
-set(BOOTLOADER_SOURCES
-	boot.S
-	command_line.S
-	disk.S
-	elf.S
-	ext2.S
-	framebuffer.S
-	memory_map.S
-	utils.S
-)
-
-add_executable(bootloader ${BOOTLOADER_SOURCES})
-target_link_options(bootloader PRIVATE LINKER:-T,${CMAKE_CURRENT_SOURCE_DIR}/linker.ld)
-target_link_options(bootloader PRIVATE -nostdlib)

bootloader/install.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+
+set -e
+
+if [[ -z $BANAN_DISK_IMAGE_PATH ]]; then
+	echo "You must set the BANAN_DISK_IMAGE_PATH environment variable" >&2
+	exit 1
+fi
+
+if [[ -z $BANAN_BUILD_DIR ]]; then
+	echo "You must set the BANAN_BUILD_DIR environment variable" >&2
+	exit 1
+fi
+
+ROOT_PARTITION_INDEX=2
+ROOT_PARTITION_INFO=$(fdisk -x $BANAN_DISK_IMAGE_PATH | grep "^$BANAN_DISK_IMAGE_PATH" | head -$ROOT_PARTITION_INDEX | tail -1)
+ROOT_PARTITION_GUID=$(echo $ROOT_PARTITION_INFO | cut -d' ' -f6)
+
+INSTALLER_BUILD_DIR=$(dirname $(realpath $0))/installer/build
+BOOTLOADER_ELF=$BANAN_BUILD_DIR/bootloader/bootloader
+
+if ! [ -f $BOOTLOADER_ELF ]; then
+	echo "You must build the bootloader first" >&2
+	exit 1
+fi
+
+if ! [ -d $INSTALLER_BUILD_DIR ]; then
+	mkdir -p $INSTALLER_BUILD_DIR
+	cd $INSTALLER_BUILD_DIR
+	cmake ..
+fi
+
+cd $INSTALLER_BUILD_DIR
+make
+
+echo installing bootloader
+$INSTALLER_BUILD_DIR/x86_64-banan_os-bootloader-installer $BOOTLOADER_ELF $BANAN_DISK_IMAGE_PATH $ROOT_PARTITION_GUID

bootloader/installer/.gitignore

@@ -1 +0,0 @@
-build/

kernel/include/kernel/FS/ProcFS/Inode.h

@@ -13,9 +13,6 @@ namespace Kernel
 		static BAN::ErrorOr<BAN::RefPtr<ProcPidInode>> create_new(Process&, TmpFileSystem&, mode_t, uid_t, gid_t);
 		~ProcPidInode() = default;
 
-		virtual uid_t uid() const override { return m_process.credentials().ruid(); }
-		virtual gid_t gid() const override { return m_process.credentials().rgid(); }
-
 		void cleanup();
 
 	protected:
@@ -34,9 +31,6 @@ namespace Kernel
 		static BAN::ErrorOr<BAN::RefPtr<ProcROInode>> create_new(Process&, size_t (Process::*callback)(off_t, BAN::ByteSpan) const, TmpFileSystem&, mode_t, uid_t, gid_t);
 		~ProcROInode() = default;
 
-		virtual uid_t uid() const override { return m_process.credentials().ruid(); }
-		virtual gid_t gid() const override { return m_process.credentials().rgid(); }
-
 	protected:
 		virtual BAN::ErrorOr<size_t> read_impl(off_t, BAN::ByteSpan) override;
 

kernel/include/kernel/FS/TmpFS/Inode.h

@@ -27,8 +27,8 @@ namespace Kernel
 		virtual ino_t		ino()		const override final { return m_ino; }
 		virtual Mode		mode()		const override final { return Mode(m_inode_info.mode); }
 		virtual nlink_t		nlink()		const override final { return m_inode_info.nlink; }
-		virtual uid_t		uid()		const override		 { return m_inode_info.uid; }
+		virtual uid_t		uid()		const override final { return m_inode_info.uid; }
-		virtual gid_t		gid()		const override		 { return m_inode_info.gid; }
+		virtual gid_t		gid()		const override final { return m_inode_info.gid; }
 		virtual off_t		size()		const override final { return m_inode_info.size; }
 		virtual timespec	atime()		const override final { return m_inode_info.atime; }
 		virtual timespec	mtime()		const override final { return m_inode_info.mtime; }

script/build.sh

@@ -39,10 +39,11 @@ build_toolchain () {
 	fi
 	
 	$BANAN_TOOLCHAIN_DIR/build.sh
+	build_target libc-install
+	$BANAN_TOOLCHAIN_DIR/build.sh libstdc++
 }
 
 create_image () {
-	build_target bootloader
 	build_target install-sysroot
 	$BANAN_SCRIPT_DIR/image.sh "$1"
 }
@@ -96,6 +97,12 @@ case $1 in
 		rm -f $FAKEROOT_FILE
 		rm -rf $BANAN_SYSROOT
 		;;
+	bootloader)
+		create_image
+		build_target bootloader
+		$BANAN_ROOT_DIR/bootloader/install.sh
+		$BANAN_SCRIPT_DIR/qemu.sh -serial stdio $QEMU_ACCEL
+		;;
 	*)
 		build_target $1
 		;;

script/config.sh

@@ -25,7 +25,3 @@ export BANAN_DISK_IMAGE_PATH=$BANAN_BUILD_DIR/banan-os.img
 if [[ -z $BANAN_UEFI_BOOT ]]; then
 	export BANAN_UEFI_BOOT=0
 fi
-
-if [[ -z $BANAN_BOOTLOADER ]]; then
-	export BANAN_BOOTLOADER="BANAN"
-fi

script/image-create.sh

@@ -15,11 +15,6 @@ if [[ -z $BANAN_TOOLCHAIN_PREFIX ]]; then
 	exit 1
 fi
 
-if [[ -z $BANAN_BOOTLOADER ]]; then
-	echo "You must set the BANAN_BOOTLOADER environment variable" >&2
-	exit 1
-fi
-
 if [[ -z $BANAN_ARCH ]]; then
 	echo  "You must set the BANAN_ARCH environment variable" >&2
 	exit 1
@@ -79,7 +74,6 @@ PARTITION2=${LOOP_DEV}p2
 
 sudo mkfs.ext2 -b 1024 -q $PARTITION2
 
-if [[ "$BANAN_BOOTLOADER" == "GRUB" ]]; then
 if [[ "$BANAN_UEFI_BOOT" == "1" ]]; then
 	sudo mkfs.fat $PARTITION1 > /dev/null
 	sudo mount $PARTITION1 "$MOUNT_DIR"
@@ -98,20 +92,5 @@ if [[ "$BANAN_BOOTLOADER" == "GRUB" ]]; then
 	sudo cp "$BANAN_TOOLCHAIN_DIR/grub-legacy-boot.cfg" "$MOUNT_DIR/boot/grub/grub.cfg"
 	sudo umount "$MOUNT_DIR"
 fi
-fi
 
 sudo losetup -d $LOOP_DEV
-
-if [[ "$BANAN_BOOTLOADER" == "GRUB" ]]; then
-	echo > /dev/null
-elif [[ "$BANAN_BOOTLOADER" == "BANAN" ]]; then
-	if [[ "$BANAN_UEFI_BOOT" == "1" ]]; then
-		echo "banan bootloader does not support UEFI" >&2
-		exit 1
-	fi
-	$BANAN_SCRIPT_DIR/install-bootloader.sh
-else
-	echo "unrecognized bootloader $BANAN_BOOTLOADER" >&2
-	exit 1
-fi
-

script/image.sh

@@ -12,6 +12,14 @@ fi
 
 if [[ "$1" == "full" ]] || [[ ! -f $BANAN_DISK_IMAGE_PATH ]]; then
 	$BANAN_SCRIPT_DIR/image-create.sh
+else
+	fdisk -l $BANAN_DISK_IMAGE_PATH | grep -q 'EFI System'; IMAGE_IS_UEFI=$?
+	[[ $BANAN_UEFI_BOOT == 1 ]]; CREATE_IS_UEFI=$?
+
+	if [[ $IMAGE_IS_UEFI -ne $CREATE_IS_UEFI ]]; then
+		echo Converting disk image to/from UEFI
+		$BANAN_SCRIPT_DIR/image-create.sh
+	fi
 fi
 
 LOOP_DEV=$(sudo losetup --show -f "$BANAN_DISK_IMAGE_PATH")

toolchain/build.sh

@@ -26,11 +26,6 @@ if [[ -z $BANAN_BUILD_DIR ]]; then
 	exit 1
 fi
 
-if [[ -z $BANAN_SCRIPT_DIR ]]; then
-	echo "You must set the BANAN_SCRIPT_DIR environment variable" >&2
-	exit 1
-fi
-
 if [[ -z $BANAN_TOOLCHAIN_DIR ]]; then
 	echo "You must set the BANAN_TOOLCHAIN_DIR environment variable" >&2
 	exit 1
@@ -51,10 +46,6 @@ if [[ -z $BANAN_ARCH ]]; then
 	exit 1
 fi
 
-if [[ -z ${MAKE_JOBS:x} ]]; then
-	MAKE_JOBS="-j$(nproc)"
-fi
-
 enter_clean_build () {
 	rm -rf build
 	mkdir build
@@ -83,7 +74,7 @@ build_binutils () {
 		--disable-nls \
 		--disable-werror
 
-	make $MAKE_JOBS
+	make
 	make install
 }
 
@@ -109,10 +100,9 @@ build_gcc () {
 		--disable-nls \
 		--enable-languages=c,c++
 
-	make $MAKE_JOBS all-gcc
+	make all-gcc
-	make $MAKE_JOBS all-target-libgcc CFLAGS_FOR_TARGET='-g -O2 -mcmodel=large -mno-red-zone'
+	make all-target-libgcc CFLAGS_FOR_TARGET='-g -O2 -mcmodel=large -mno-red-zone'
-	make install-gcc
+	make install-gcc install-target-libgcc
-	make install-target-libgcc
 }
 
 build_grub () {
@@ -137,7 +127,7 @@ build_grub () {
 		--with-platform="efi" \
 		--disable-werror
 	
-	make $MAKE_JOBS
+	make
 	make install
 }
 
@@ -148,29 +138,38 @@ build_libstdcpp () {
 	fi
 
 	cd $BANAN_BUILD_DIR/toolchain/$GCC_VERSION/build
-	make $MAKE_JOBS all-target-libstdc++-v3 CFLAGS_FOR_TARGET='-g -O2 -mcmodel=large -mno-red-zone'
+	make all-target-libstdc++-v3
 	make install-target-libstdc++-v3
 }
 
-# delete everything but toolchain
+if [[ $# -ge 1 ]]; then
-find $BANAN_BUILD_DIR -mindepth 1 -maxdepth 1 ! -name toolchain -exec rm -r {} +
+	if [[ "$1" == "libstdc++" ]]; then
+		build_libstdcpp
+		exit 0
+	fi
+
+	echo "unrecognized arguments $@"
+	exit 1
+fi
 
 # NOTE: we have to manually create initial sysroot with libc headers
 #       since cmake cannot be invoked yet
 echo "Creating dummy sysroot"
+rm -rf $BANAN_SYSROOT
 mkdir -p $BANAN_SYSROOT/usr
 cp -r $BANAN_ROOT_DIR/libc/include $BANAN_SYSROOT/usr/include
 
+
 # Cleanup all old files from toolchain prefix
 rm -rf $BANAN_TOOLCHAIN_PREFIX
 
+if [[ -z ${MAKEFLAGS:x} ]]; then
+	export MAKEFLAGS="-j$(nproc)"
+fi
+
 mkdir -p $BANAN_BUILD_DIR/toolchain
 build_binutils
 build_gcc
 build_grub
 
-# delete sysroot and install libc
+rm -rf $BANAN_SYSROOT
-rm -r $BANAN_SYSROOT
-$BANAN_SCRIPT_DIR/build.sh libc-install
-
-build_libstdcpp