Shell: Set get old termios earlier

I sourced the config file before getting old termios. Sourcing
updated the termios so old_termios was always in non canonical, non
echoing mode.

.gitignore

@@ -2,8 +2,4 @@
 .idea/
 build/
 base/
-*.tar.*
-toolchain/*/
 
-!toolchain/local/
-!base-sysroot.tar.gz

BAN/include/BAN/Span.h

@@ -127,8 +127,8 @@ namespace BAN
 		ASSERT(start <= m_size);
 		if (length == ~size_type(0))
 			length = m_size - start;
-		ASSERT(start + length <= m_size);
-		return Span(m_data + start, m_size - start - length);
+		ASSERT(m_size - start >= length);
+		return Span(m_data + start, length);
 	}
 
 }

script/bochs.sh

@@ -1,5 +1,4 @@
 #!/bin/bash
-set -e
 
 BOCHS_CONFIG_FILE=bochsrc
 COM1_TERMINAL=kitty

script/build.sh

@@ -1,24 +1,20 @@
 #!/bin/bash
 set -e
 
-if [[ -z $BANAN_ARCH ]]; then
-	export BANAN_ARCH=x86_64
-fi
-
 export BANAN_SCRIPT_DIR=$(dirname $(realpath $0))
 source $BANAN_SCRIPT_DIR/config.sh
 
 make_build_dir () {
-	if ! [[ -d $BANAN_BUILD_DIR ]]; then
-		mkdir -p $BANAN_BUILD_DIR
-		cd $BANAN_BUILD_DIR
-		cmake --toolchain=$BANAN_TOOLCHAIN_DIR/Toolchain.txt -G Ninja $BANAN_ROOT_DIR $BANAN_CMAKE_ARGS
+	mkdir -p $BANAN_BUILD_DIR
+	cd $BANAN_BUILD_DIR
+	if ! [[ -f "build.ninja" ]]; then
+		cmake --toolchain=$BANAN_TOOLCHAIN_DIR/Toolchain.txt -G Ninja $BANAN_ROOT_DIR
 	fi
 }
 
 build_target () {
 	make_build_dir
-	if [[ -z $1 ]]; then
+	if [[ $# -eq 0 ]]; then
 		echo "No target provided"
 		exit 1
 	fi
@@ -27,6 +23,15 @@ build_target () {
 }
 
 build_toolchain () {
+	if [[ -f $BANAN_TOOLCHAIN_PREFIX/bin/$BANAN_TOOLCHAIN_TRIPLE_PREFIX-gcc ]]; then
+		echo "You already seem to have a toolchain."
+		read -e -p "Do you want to rebuild it [y/N]? " choice
+		if ! [[ "$choice" == [Yy]* ]]; then
+			echo "Aborting toolchain rebuild"
+			exit 0
+		fi
+	fi
+	
 	$BANAN_TOOLCHAIN_DIR/build.sh
 	build_target libc-install
 	$BANAN_TOOLCHAIN_DIR/build.sh libstdc++
@@ -51,57 +56,42 @@ run_bochs () {
 	$BANAN_SCRIPT_DIR/bochs.sh $@
 }
 
-if [[ "$1" == "toolchain" ]]; then
-	if [[ -f $BANAN_TOOLCHAIN_PREFIX/bin/$BANAN_TOOLCHAIN_TRIPLE_PREFIX-gcc ]]; then
-		echo "You already seem to have build toolchain."
-		read -e -p "Do you want to rebuild it [y/N]? " choice
-		if ! [[ "$choice" == [Yy]* ]]; then
-			echo "Aborting toolchain rebuild"
-			exit 0
-		fi
-	fi
-
-	build_toolchain
-	exit 0
-fi
-
-if [[ "$1" == "image" ]]; then
-	create_image
-	exit 0
-fi
-
-if [[ "$1" == "image-full" ]]; then
-	create_image full
-	exit 0
-fi
-
 if [[ "$(uname)" == "Linux" ]]; then
 	QEMU_ACCEL="-accel kvm"
 fi
 
-if [[ "$1" == "qemu" ]]; then
-	run_qemu -serial stdio $QEMU_ACCEL
-	exit 0
+if [[ $# -eq 0 ]]; then
+	echo "No argument given"
+	exit 1
 fi
 
-if [[ "$1" == "qemu-nographic" ]]; then
-	run_qemu -nographic $QEMU_ACCEL
-	exit 0
-fi
+case $1 in
+	toolchain)
+		build_toolchain
+		;;
+	image)
+		create_image
+		;;
+	image-full)
+		create_image full
+		;;
+	qemu)
+		run_qemu -serial stdio $QEMU_ACCEL
+		;;
+	qemu-nographic)
+		run_qemu -nographic $QEMU_ACCEL
+		;;
+	qemu-debug)
+		run_qemu -serial stdio -d int -no-reboot
+		;;
+	bochs)
+		run_bochs
+		;;
+	check-fs)
+		$BANAN_SCRIPT_DIR/check-fs.sh
+		;;
+	*)
+		build_target $1
+		;;
+esac
 
-if [[ "$1" == "qemu-debug" ]]; then
-	run_qemu -serial stdio -d int -no-reboot
-	exit 0
-fi
-
-if [[ "$1" == "bochs" ]]; then
-	run_bochs
-	exit 0
-fi
-
-if [[ "$1" == "check-fs" ]]; then
-	$BANAN_SCRIPT_DIR/check-fs.sh
-	exit 0
-fi
-
-build_target $1

script/check-fs.sh

@@ -1,5 +1,4 @@
 #!/bin/bash
-set -e
 
 if [[ -z $BANAN_DISK_IMAGE_PATH ]]; then
 	echo "You must set BANAN_DISK_IMAGE_PATH environment variable" >&2

script/config.sh

@@ -1,5 +1,5 @@
 if [[ -z $BANAN_ROOT_DIR ]]; then
-	if [[ -z $BANAN_SCRIPT_DIR ]]; then
+	if ! [[ -z $BANAN_SCRIPT_DIR ]]; then
 		export BANAN_ROOT_DIR=$BANAN_SCRIPT_DIR/..
 	else
 		echo  "You must set the BANAN_ROOT_DIR environment variable" >&2
@@ -8,8 +8,7 @@ if [[ -z $BANAN_ROOT_DIR ]]; then
 fi
 
 if [[ -z $BANAN_ARCH ]]; then
-	echo  "You must set the BANAN_ARCH environment variable" >&2
-	exit 1
+	export BANAN_ARCH=x86_64
 fi
 
 export BANAN_TOOLCHAIN_DIR=$BANAN_ROOT_DIR/toolchain

script/image-full.sh

@@ -1,5 +1,4 @@
 #!/bin/bash
-set -e
 
 if [[ -z $BANAN_DISK_IMAGE_PATH ]]; then
 	echo  "You must set the BANAN_DISK_IMAGE_PATH environment variable" >&2
@@ -79,18 +78,18 @@ if [[ "$BANAN_UEFI_BOOT" == "1" ]]; then
 	sudo mkfs.fat $PARTITION1 > /dev/null
 	sudo mount $PARTITION1 "$MOUNT_DIR"
 	sudo mkdir -p "$MOUNT_DIR/EFI/BOOT"
-	sudo "$BANAN_TOOLCHAIN_PREFIX/bin/grub-mkstandalone" -O "$BANAN_ARCH-efi" -o "$MOUNT_DIR/EFI/BOOT/BOOTX64.EFI" "boot/grub/grub.cfg=$BANAN_TOOLCHAIN_PREFIX/grub-memdisk.cfg"
+	sudo "$BANAN_TOOLCHAIN_PREFIX/bin/grub-mkstandalone" -O "$BANAN_ARCH-efi" -o "$MOUNT_DIR/EFI/BOOT/BOOTX64.EFI" "boot/grub/grub.cfg=$BANAN_TOOLCHAIN_DIR/grub-memdisk.cfg"
 	sudo umount "$MOUNT_DIR"
 
 	sudo mount $PARTITION2 "$MOUNT_DIR"
 	sudo mkdir -p "$MOUNT_DIR/boot/grub"
-	sudo cp "$BANAN_TOOLCHAIN_PREFIX/grub-uefi.cfg" "$MOUNT_DIR/boot/grub/grub.cfg"
+	sudo cp "$BANAN_TOOLCHAIN_DIR/grub-uefi.cfg" "$MOUNT_DIR/boot/grub/grub.cfg"
 	sudo umount "$MOUNT_DIR"
 else
 	sudo mount $PARTITION2 "$MOUNT_DIR"
 	sudo grub-install --no-floppy --target=i386-pc --modules="normal ext2 multiboot" --boot-directory="$MOUNT_DIR/boot" $LOOP_DEV
 	sudo mkdir -p "$MOUNT_DIR/boot/grub"
-	sudo cp "$BANAN_TOOLCHAIN_PREFIX/grub-legacy-boot.cfg" "$MOUNT_DIR/boot/grub/grub.cfg"
+	sudo cp "$BANAN_TOOLCHAIN_DIR/grub-legacy-boot.cfg" "$MOUNT_DIR/boot/grub/grub.cfg"
 	sudo umount "$MOUNT_DIR"
 fi
 

script/qemu.sh

@@ -1,5 +1,4 @@
 #!/bin/bash
-set -e
 
 if [[ -z $BANAN_DISK_IMAGE_PATH ]]; then
 	echo "You must set the BANAN_DISK_IMAGE_PATH environment variable" >&2

toolchain/.gitignore

@@ -0,0 +1 @@
+*/

toolchain/build.sh

@@ -10,6 +10,16 @@ if [[ -z $BANAN_SYSROOT ]]; then
 	exit 1
 fi
 
+if [[ -z $BANAN_ROOT_DIR ]]; then
+	echo "You must set the BANAN_ROOT_DIR 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
+
 if [[ -z $BANAN_TOOLCHAIN_DIR ]]; then
 	echo "You must set the BANAN_TOOLCHAIN_DIR environment variable" >&2
 	exit 1
@@ -30,10 +40,16 @@ if [[ -z $BANAN_ARCH ]]; then
 	exit 1
 fi
 
+enter_clean_build () {
+	rm -rf build
+	mkdir build
+	cd build
+}
+
 build_binutils () {
 	echo "Building ${BINUTILS_VERSION}"
 
-	cd $BANAN_TOOLCHAIN_DIR
+	cd $BANAN_BUILD_DIR/toolchain
 
 	if [ ! -f ${BINUTILS_VERSION}.tar.xz ]; then
 		wget https://ftp.gnu.org/gnu/binutils/${BINUTILS_VERSION}.tar.xz
@@ -41,13 +57,13 @@ build_binutils () {
 
 	if [ ! -d $BINUTILS_VERSION ]; then
 		tar xvf ${BINUTILS_VERSION}.tar.xz
-		patch -s -p0 < ${BINUTILS_VERSION}.patch
+		patch -s -p0 < $BANAN_TOOLCHAIN_DIR/${BINUTILS_VERSION}.patch
 	fi
 
-	mkdir -p build/${BINUTILS_VERSION}/
-	cd build/${BINUTILS_VERSION}/
+	cd $BINUTILS_VERSION
+	enter_clean_build
 
-	../../${BINUTILS_VERSION}/configure \
+	../configure \
 		--target="$BANAN_TOOLCHAIN_TRIPLE_PREFIX" \
 		--prefix="$BANAN_TOOLCHAIN_PREFIX" \
 		--with-sysroot="$BANAN_SYSROOT" \
@@ -61,7 +77,7 @@ build_binutils () {
 build_gcc () {
 	echo "Building ${GCC_VERSION}"
 
-	cd $BANAN_TOOLCHAIN_DIR
+	cd $BANAN_BUILD_DIR/toolchain
 
 	if [ ! -f ${GCC_VERSION}.tar.xz ]; then
 		wget https://ftp.gnu.org/gnu/gcc/${GCC_VERSION}/${GCC_VERSION}.tar.xz
@@ -69,13 +85,13 @@ build_gcc () {
 
 	if [ ! -d $GCC_VERSION ]; then
 		tar xvf ${GCC_VERSION}.tar.xz
-		patch -s -p0 < ${GCC_VERSION}.patch
+		patch -s -p0 < $BANAN_TOOLCHAIN_DIR/${GCC_VERSION}.patch
 	fi
 
-	mkdir -p build/${GCC_VERSION}/
-	cd build/${GCC_VERSION}/
+	cd ${GCC_VERSION}
+	enter_clean_build
 
-	../../${GCC_VERSION}/configure \
+	../configure \
 		--target="$BANAN_TOOLCHAIN_TRIPLE_PREFIX" \
 		--prefix="$BANAN_TOOLCHAIN_PREFIX" \
 		--with-sysroot="$BANAN_SYSROOT" \
@@ -90,7 +106,7 @@ build_gcc () {
 build_grub () {
 	echo "Building ${GRUB_VERSION}"
 
-	cd $BANAN_TOOLCHAIN_DIR
+	cd $BANAN_BUILD_DIR/toolchain
 
 	if [ ! -f ${GRUB_VERSION}.tar.xz ]; then
 		wget https://ftp.gnu.org/gnu/grub/${GRUB_VERSION}.tar.xz
@@ -100,10 +116,10 @@ build_grub () {
 		tar xvf ${GRUB_VERSION}.tar.xz
 	fi
 
-	mkdir -p build/${GRUB_VERSION}/
-	cd build/${GRUB_VERSION}/
+	cd $GRUB_VERSION
+	enter_clean_build
 
-	../../${GRUB_VERSION}/configure \
+	../configure \
 		--target="$BANAN_ARCH" \
 		--prefix="$BANAN_TOOLCHAIN_PREFIX" \
 		--with-platform="efi" \
@@ -114,16 +130,35 @@ build_grub () {
 }
 
 build_libstdcpp () {
-	cd build/${GCC_VERSION}/
+	if ! [[ -d $BANAN_BUILD_DIR/toolchain/$GCC_VERSION/build ]]; then
+		echo "You have to build gcc first"
+		exit 1
+	fi
+
+	cd $BANAN_BUILD_DIR/toolchain/$GCC_VERSION/build
 	make -j $(nproc) all-target-libstdc++-v3
 	make install-target-libstdc++-v3
 }
 
-if [[ "$1" == "libstdc++" ]]; then
-	build_libstdcpp
-	exit 0
+if [[ $# -ge 1 ]]; then
+	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 "Syncing sysroot headers"
+mkdir -p $BANAN_SYSROOT
+sudo mkdir -p $BANAN_SYSROOT/usr/include
+sudo rsync -a $BANAN_ROOT_DIR/libc/include/ $BANAN_SYSROOT/usr/include/
+
+mkdir -p $BANAN_BUILD_DIR/toolchain
+
 build_binutils
 build_gcc
 build_grub

toolchain/local/.gitignore

@@ -1 +0,0 @@
-*/

userspace/Shell/main.cpp

@@ -833,6 +833,8 @@ int main(int argc, char** argv)
 	if (signal(SIGINT, [](int) {}) == SIG_ERR)
 		perror("signal");
 
+	tcgetattr(0, &old_termios);
+
 	{
 		FILE* fp = fopen("/etc/hostname", "r");
 		if (fp != NULL)
@@ -876,8 +878,6 @@ int main(int argc, char** argv)
 	
 	source_shellrc();
 
-	tcgetattr(0, &old_termios);
-
 	new_termios = old_termios;
 	new_termios.c_lflag &= ~(ECHO | ICANON);
 	tcsetattr(0, TCSANOW, &new_termios);

userspace/meminfo/main.cpp

@@ -45,7 +45,7 @@ int main()
 
 			while (ssize_t nread = read(fd, path_buffer, sizeof(path_buffer) - 1))
 			{
-				if (nread == -1)
+				if (nread < 0)
 				{
 					perror("read");
 					break;