--- /dev/null
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+
+PWD := $(shell pwd)
+
+CHOST := $(shell gcc -dumpmachine)
+ifneq (,$(ARCH))
+CBUILD := $(subst -gcc,,$(lastword $(subst /, ,$(firstword $(wildcard $(foreach bindir,$(subst :, ,$(PATH)),$(bindir)/$(ARCH)-*-gcc))))))
+ifeq (,$(CBUILD))
+$(error The toolchain for $(ARCH) is not installed)
+endif
+else
+CBUILD := $(CHOST)
+ARCH := $(firstword $(subst -, ,$(CBUILD)))
+endif
+
+# Set these from the environment to override
+KERNEL_PATH ?= $(PWD)/../../../../..
+BUILD_PATH ?= $(PWD)/build/$(ARCH)
+DISTFILES_PATH ?= $(PWD)/distfiles
+NR_CPUS ?= 4
+
+MIRROR := https://download.wireguard.com/qemu-test/distfiles/
+
+default: qemu
+
+# variable name, tarball project name, version, tarball extension, default URI base
+define tar_download =
+$(1)_VERSION := $(3)
+$(1)_NAME := $(2)-$$($(1)_VERSION)
+$(1)_TAR := $(DISTFILES_PATH)/$$($(1)_NAME)$(4)
+$(1)_PATH := $(BUILD_PATH)/$$($(1)_NAME)
+$(call file_download,$$($(1)_NAME)$(4),$(5),$(6))
+endef
+
+define file_download =
+$(DISTFILES_PATH)/$(1):
+ mkdir -p $(DISTFILES_PATH)
+ flock -x $$@.lock -c '[ -f $$@ ] && exit 0; wget -O $$@.tmp $(MIRROR)$(1) || wget -t inf --retry-on-http-error=404 -O $$@.tmp $(2)$(1) || rm -f $$@.tmp'
+ if echo "$(3) $$@.tmp" | sha256sum -c -; then mv $$@.tmp $$@; else rm -f $$@.tmp; exit 71; fi
+endef
+
+$(eval $(call tar_download,MUSL,musl,1.1.20,.tar.gz,https://www.musl-libc.org/releases/,44be8771d0e6c6b5f82dd15662eb2957c9a3173a19a8b49966ac0542bbd40d61))
+$(eval $(call tar_download,LIBMNL,libmnl,1.0.4,.tar.bz2,https://www.netfilter.org/projects/libmnl/files/,171f89699f286a5854b72b91d06e8f8e3683064c5901fb09d954a9ab6f551f81))
+$(eval $(call tar_download,IPERF,iperf,3.1.7,.tar.gz,http://downloads.es.net/pub/iperf/,a4ef73406fe92250602b8da2ae89ec53211f805df97a1d1d629db5a14043734f))
+$(eval $(call tar_download,BASH,bash,5.0,.tar.gz,https://ftp.gnu.org/gnu/bash/,b4a80f2ac66170b2913efbfb9f2594f1f76c7b1afd11f799e22035d63077fb4d))
+$(eval $(call tar_download,IPROUTE2,iproute2,5.1.0,.tar.gz,https://www.kernel.org/pub/linux/utils/net/iproute2/,9b43707d6075ecdca14803ca8ce0c8553848c49fa1586d12fd508d66577243f2))
+$(eval $(call tar_download,IPTABLES,iptables,1.6.1,.tar.bz2,https://www.netfilter.org/projects/iptables/files/,0fc2d7bd5d7be11311726466789d4c65fb4c8e096c9182b56ce97440864f0cf5))
+$(eval $(call tar_download,NMAP,nmap,7.60,.tar.bz2,https://nmap.org/dist/,a8796ecc4fa6c38aad6139d9515dc8113023a82e9d787e5a5fb5fa1b05516f21))
+$(eval $(call tar_download,IPUTILS,iputils,s20161105,.tar.gz,https://github.com/iputils/iputils/archive/s20161105.tar.gz/#,f813092f03d17294fd23544b129b95cdb87fe19f7970a51908a6b88509acad8a))
+$(eval $(call tar_download,WIREGUARD_TOOLS,WireGuard,0.0.20191212,.tar.xz,https://git.zx2c4.com/WireGuard/snapshot/,b0d718380f7a8822b2f12d75e462fa4eafa3a77871002981f367cd4fe2a1b071))
+
+KERNEL_BUILD_PATH := $(BUILD_PATH)/kernel$(if $(findstring yes,$(DEBUG_KERNEL)),-debug)
+rwildcard=$(foreach d,$(wildcard $1*),$(call rwildcard,$d/,$2) $(filter $(subst *,%,$2),$d))
+WIREGUARD_SOURCES := $(call rwildcard,$(KERNEL_PATH)/drivers/net/wireguard/,*)
+
+export CFLAGS ?= -O3 -pipe
+export LDFLAGS ?=
+export CPPFLAGS := -I$(BUILD_PATH)/include
+
+ifeq ($(CHOST),$(CBUILD))
+CROSS_COMPILE_FLAG := --host=$(CHOST)
+NOPIE_GCC := gcc -fno-PIE
+CFLAGS += -march=native
+STRIP := strip
+else
+$(info Cross compilation: building for $(CBUILD) using $(CHOST))
+CROSS_COMPILE_FLAG := --build=$(CBUILD) --host=$(CHOST)
+export CROSS_COMPILE=$(CBUILD)-
+NOPIE_GCC := $(CBUILD)-gcc -fno-PIE
+STRIP := $(CBUILD)-strip
+endif
+ifeq ($(ARCH),aarch64)
+QEMU_ARCH := aarch64
+KERNEL_ARCH := arm64
+KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/arm64/boot/Image
+ifeq ($(CHOST),$(CBUILD))
+QEMU_MACHINE := -cpu host -machine virt,gic_version=host,accel=kvm
+else
+QEMU_MACHINE := -cpu cortex-a53 -machine virt
+CFLAGS += -march=armv8-a -mtune=cortex-a53
+endif
+else ifeq ($(ARCH),aarch64_be)
+QEMU_ARCH := aarch64
+KERNEL_ARCH := arm64
+KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/arm64/boot/Image
+ifeq ($(CHOST),$(CBUILD))
+QEMU_MACHINE := -cpu host -machine virt,gic_version=host,accel=kvm
+else
+QEMU_MACHINE := -cpu cortex-a53 -machine virt
+CFLAGS += -march=armv8-a -mtune=cortex-a53
+endif
+else ifeq ($(ARCH),arm)
+QEMU_ARCH := arm
+KERNEL_ARCH := arm
+KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/arm/boot/zImage
+ifeq ($(CHOST),$(CBUILD))
+QEMU_MACHINE := -cpu host -machine virt,gic_version=host,accel=kvm
+else
+QEMU_MACHINE := -cpu cortex-a15 -machine virt
+CFLAGS += -march=armv7-a -mtune=cortex-a15 -mabi=aapcs-linux
+endif
+else ifeq ($(ARCH),armeb)
+QEMU_ARCH := arm
+KERNEL_ARCH := arm
+KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/arm/boot/zImage
+ifeq ($(CHOST),$(CBUILD))
+QEMU_MACHINE := -cpu host -machine virt,gic_version=host,accel=kvm
+else
+QEMU_MACHINE := -cpu cortex-a15 -machine virt
+CFLAGS += -march=armv7-a -mabi=aapcs-linux # We don't pass -mtune=cortex-a15 due to a compiler bug on big endian.
+LDFLAGS += -Wl,--be8
+endif
+else ifeq ($(ARCH),x86_64)
+QEMU_ARCH := x86_64
+KERNEL_ARCH := x86_64
+KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/x86/boot/bzImage
+ifeq ($(CHOST),$(CBUILD))
+QEMU_MACHINE := -cpu host -machine q35,accel=kvm
+else
+QEMU_MACHINE := -cpu Skylake-Server -machine q35
+CFLAGS += -march=skylake-avx512
+endif
+else ifeq ($(ARCH),i686)
+QEMU_ARCH := i386
+KERNEL_ARCH := x86
+KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/x86/boot/bzImage
+ifeq ($(subst i686,x86_64,$(CBUILD)),$(CHOST))
+QEMU_MACHINE := -cpu host -machine q35,accel=kvm
+else
+QEMU_MACHINE := -cpu coreduo -machine q35
+CFLAGS += -march=prescott
+endif
+else ifeq ($(ARCH),mips64)
+QEMU_ARCH := mips64
+KERNEL_ARCH := mips
+KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
+ifeq ($(CHOST),$(CBUILD))
+QEMU_MACHINE := -cpu host -machine malta,accel=kvm
+CFLAGS += -EB
+else
+QEMU_MACHINE := -cpu MIPS64R2-generic -machine malta -smp 1
+CFLAGS += -march=mips64r2 -EB
+endif
+else ifeq ($(ARCH),mips64el)
+QEMU_ARCH := mips64el
+KERNEL_ARCH := mips
+KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
+ifeq ($(CHOST),$(CBUILD))
+QEMU_MACHINE := -cpu host -machine malta,accel=kvm
+CFLAGS += -EL
+else
+QEMU_MACHINE := -cpu MIPS64R2-generic -machine malta -smp 1
+CFLAGS += -march=mips64r2 -EL
+endif
+else ifeq ($(ARCH),mips)
+QEMU_ARCH := mips
+KERNEL_ARCH := mips
+KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
+ifeq ($(CHOST),$(CBUILD))
+QEMU_MACHINE := -cpu host -machine malta,accel=kvm
+CFLAGS += -EB
+else
+QEMU_MACHINE := -cpu 24Kf -machine malta -smp 1
+CFLAGS += -march=mips32r2 -EB
+endif
+else ifeq ($(ARCH),mipsel)
+QEMU_ARCH := mipsel
+KERNEL_ARCH := mips
+KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
+ifeq ($(CHOST),$(CBUILD))
+QEMU_MACHINE := -cpu host -machine malta,accel=kvm
+CFLAGS += -EL
+else
+QEMU_MACHINE := -cpu 24Kf -machine malta -smp 1
+CFLAGS += -march=mips32r2 -EL
+endif
+else ifeq ($(ARCH),powerpc64le)
+QEMU_ARCH := ppc64
+KERNEL_ARCH := powerpc
+KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
+ifeq ($(CHOST),$(CBUILD))
+QEMU_MACHINE := -cpu host,accel=kvm -machine pseries
+else
+QEMU_MACHINE := -machine pseries
+endif
+CFLAGS += -mcpu=powerpc64le -mlong-double-64
+else ifeq ($(ARCH),powerpc)
+QEMU_ARCH := ppc
+KERNEL_ARCH := powerpc
+KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/arch/powerpc/boot/uImage
+ifeq ($(CHOST),$(CBUILD))
+QEMU_MACHINE := -cpu host,accel=kvm -machine ppce500
+else
+QEMU_MACHINE := -machine ppce500
+endif
+CFLAGS += -mcpu=powerpc -mlong-double-64 -msecure-plt
+else ifeq ($(ARCH),m68k)
+QEMU_ARCH := m68k
+KERNEL_ARCH := m68k
+KERNEL_BZIMAGE := $(KERNEL_BUILD_PATH)/vmlinux
+ifeq ($(CHOST),$(CBUILD))
+QEMU_MACHINE := -cpu host,accel=kvm -machine q800
+else
+QEMU_MACHINE := -machine q800
+endif
+else
+$(error I only build: x86_64, i686, arm, armeb, aarch64, aarch64_be, mips, mipsel, mips64, mips64el, powerpc64le, powerpc, m68k)
+endif
+
+REAL_CC := $(CBUILD)-gcc
+MUSL_CC := $(BUILD_PATH)/musl-gcc
+export CC := $(MUSL_CC)
+USERSPACE_DEPS := $(MUSL_CC) $(BUILD_PATH)/include/.installed $(BUILD_PATH)/include/linux/.installed
+
+build: $(KERNEL_BZIMAGE)
+qemu: $(KERNEL_BZIMAGE)
+ rm -f $(BUILD_PATH)/result
+ timeout --foreground 20m qemu-system-$(QEMU_ARCH) \
+ -nodefaults \
+ -nographic \
+ -smp $(NR_CPUS) \
+ $(QEMU_MACHINE) \
+ -m $$(grep -q CONFIG_DEBUG_KMEMLEAK=y $(KERNEL_BUILD_PATH)/.config && echo 1G || echo 256M) \
+ -serial stdio \
+ -serial file:$(BUILD_PATH)/result \
+ -no-reboot \
+ -monitor none \
+ -kernel $<
+ grep -Fq success $(BUILD_PATH)/result
+
+$(BUILD_PATH)/init-cpio-spec.txt:
+ mkdir -p $(BUILD_PATH)
+ echo "file /init $(BUILD_PATH)/init 755 0 0" > $@
+ echo "file /init.sh $(PWD)/../netns.sh 755 0 0" >> $@
+ echo "dir /dev 755 0 0" >> $@
+ echo "nod /dev/console 644 0 0 c 5 1" >> $@
+ echo "dir /bin 755 0 0" >> $@
+ echo "file /bin/iperf3 $(IPERF_PATH)/src/iperf3 755 0 0" >> $@
+ echo "file /bin/wg $(WIREGUARD_TOOLS_PATH)/src/tools/wg 755 0 0" >> $@
+ echo "file /bin/bash $(BASH_PATH)/bash 755 0 0" >> $@
+ echo "file /bin/ip $(IPROUTE2_PATH)/ip/ip 755 0 0" >> $@
+ echo "file /bin/ss $(IPROUTE2_PATH)/misc/ss 755 0 0" >> $@
+ echo "file /bin/ping $(IPUTILS_PATH)/ping 755 0 0" >> $@
+ echo "file /bin/ncat $(NMAP_PATH)/ncat/ncat 755 0 0" >> $@
+ echo "file /bin/xtables-multi $(IPTABLES_PATH)/iptables/xtables-multi 755 0 0" >> $@
+ echo "slink /bin/iptables xtables-multi 777 0 0" >> $@
+ echo "slink /bin/ping6 ping 777 0 0" >> $@
+ echo "dir /lib 755 0 0" >> $@
+ echo "file /lib/libc.so $(MUSL_PATH)/lib/libc.so 755 0 0" >> $@
+ echo "slink /lib/ld-linux.so.1 libc.so 777 0 0" >> $@
+
+$(KERNEL_BUILD_PATH)/.config: kernel.config arch/$(ARCH).config
+ mkdir -p $(KERNEL_BUILD_PATH)
+ cp kernel.config $(KERNEL_BUILD_PATH)/minimal.config
+ printf 'CONFIG_NR_CPUS=$(NR_CPUS)\nCONFIG_INITRAMFS_SOURCE="$(BUILD_PATH)/init-cpio-spec.txt"\n' >> $(KERNEL_BUILD_PATH)/minimal.config
+ cat arch/$(ARCH).config >> $(KERNEL_BUILD_PATH)/minimal.config
+ $(MAKE) -C $(KERNEL_PATH) O=$(KERNEL_BUILD_PATH) ARCH=$(KERNEL_ARCH) allnoconfig
+ cd $(KERNEL_BUILD_PATH) && ARCH=$(KERNEL_ARCH) $(KERNEL_PATH)/scripts/kconfig/merge_config.sh -n $(KERNEL_BUILD_PATH)/.config $(KERNEL_BUILD_PATH)/minimal.config
+ $(if $(findstring yes,$(DEBUG_KERNEL)),cp debug.config $(KERNEL_BUILD_PATH) && cd $(KERNEL_BUILD_PATH) && ARCH=$(KERNEL_ARCH) $(KERNEL_PATH)/scripts/kconfig/merge_config.sh -n $(KERNEL_BUILD_PATH)/.config debug.config,)
+
+$(KERNEL_BZIMAGE): $(KERNEL_BUILD_PATH)/.config $(BUILD_PATH)/init-cpio-spec.txt $(MUSL_PATH)/lib/libc.so $(IPERF_PATH)/src/iperf3 $(IPUTILS_PATH)/ping $(BASH_PATH)/bash $(IPROUTE2_PATH)/misc/ss $(IPROUTE2_PATH)/ip/ip $(IPTABLES_PATH)/iptables/xtables-multi $(NMAP_PATH)/ncat/ncat $(WIREGUARD_TOOLS_PATH)/src/tools/wg $(BUILD_PATH)/init ../netns.sh $(WIREGUARD_SOURCES)
+ $(MAKE) -C $(KERNEL_PATH) O=$(KERNEL_BUILD_PATH) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(CROSS_COMPILE) CC="$(NOPIE_GCC)"
+
+$(BUILD_PATH)/include/linux/.installed: | $(KERNEL_BUILD_PATH)/.config
+ $(MAKE) -C $(KERNEL_PATH) O=$(KERNEL_BUILD_PATH) INSTALL_HDR_PATH=$(BUILD_PATH) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(CROSS_COMPILE) headers_install
+ touch $@
+
+$(MUSL_PATH)/lib/libc.so: $(MUSL_TAR)
+ mkdir -p $(BUILD_PATH)
+ flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
+ cd $(MUSL_PATH) && CC=$(REAL_CC) ./configure --prefix=/ --disable-static --build=$(CBUILD)
+ $(MAKE) -C $(MUSL_PATH)
+ $(STRIP) -s $@
+
+$(BUILD_PATH)/include/.installed: $(MUSL_PATH)/lib/libc.so
+ $(MAKE) -C $(MUSL_PATH) DESTDIR=$(BUILD_PATH) install-headers
+ touch $@
+
+$(MUSL_CC): $(MUSL_PATH)/lib/libc.so
+ sh $(MUSL_PATH)/tools/musl-gcc.specs.sh $(BUILD_PATH)/include $(MUSL_PATH)/lib /lib/ld-linux.so.1 > $(BUILD_PATH)/musl-gcc.specs
+ printf '#!/bin/sh\nexec "$(REAL_CC)" --specs="$(BUILD_PATH)/musl-gcc.specs" -fno-stack-protector -no-pie "$$@"\n' > $(BUILD_PATH)/musl-gcc
+ chmod +x $(BUILD_PATH)/musl-gcc
+
+$(IPERF_PATH)/.installed: $(IPERF_TAR)
+ mkdir -p $(BUILD_PATH)
+ flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
+ sed -i '1s/^/#include <stdint.h>/' $(IPERF_PATH)/src/cjson.h $(IPERF_PATH)/src/timer.h
+ sed -i -r 's/-p?g//g' $(IPERF_PATH)/src/Makefile*
+ touch $@
+
+$(IPERF_PATH)/src/iperf3: | $(IPERF_PATH)/.installed $(USERSPACE_DEPS)
+ cd $(IPERF_PATH) && CFLAGS="$(CFLAGS) -D_GNU_SOURCE" ./configure --prefix=/ $(CROSS_COMPILE_FLAG) --enable-static --disable-shared
+ $(MAKE) -C $(IPERF_PATH)
+ $(STRIP) -s $@
+
+$(LIBMNL_PATH)/.installed: $(LIBMNL_TAR)
+ flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
+ touch $@
+
+$(LIBMNL_PATH)/src/.libs/libmnl.a: | $(LIBMNL_PATH)/.installed $(USERSPACE_DEPS)
+ cd $(LIBMNL_PATH) && ./configure --prefix=/ $(CROSS_COMPILE_FLAG) --enable-static --disable-shared
+ $(MAKE) -C $(LIBMNL_PATH)
+ sed -i 's:prefix=.*:prefix=$(LIBMNL_PATH):' $(LIBMNL_PATH)/libmnl.pc
+
+$(WIREGUARD_TOOLS_PATH)/.installed: $(WIREGUARD_TOOLS_TAR)
+ flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
+ touch $@
+
+$(WIREGUARD_TOOLS_PATH)/src/tools/wg: | $(WIREGUARD_TOOLS_PATH)/.installed $(LIBMNL_PATH)/src/.libs/libmnl.a $(USERSPACE_DEPS)
+ LDFLAGS="$(LDFLAGS) -L$(LIBMNL_PATH)/src/.libs" $(MAKE) -C $(WIREGUARD_TOOLS_PATH)/src/tools LIBMNL_CFLAGS="-I$(LIBMNL_PATH)/include" LIBMNL_LDLIBS="-lmnl" wg
+ $(STRIP) -s $@
+
+$(BUILD_PATH)/init: init.c | $(USERSPACE_DEPS)
+ mkdir -p $(BUILD_PATH)
+ $(MUSL_CC) -o $@ $(CFLAGS) $(LDFLAGS) -std=gnu11 $<
+ $(STRIP) -s $@
+
+$(IPUTILS_PATH)/.installed: $(IPUTILS_TAR)
+ mkdir -p $(BUILD_PATH)
+ flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
+ touch $@
+
+$(IPUTILS_PATH)/ping: | $(IPUTILS_PATH)/.installed $(USERSPACE_DEPS)
+ $(MAKE) -C $(IPUTILS_PATH) USE_CAP=no USE_IDN=no USE_NETTLE=no USE_CRYPTO=no ping
+ $(STRIP) -s $@
+
+$(BASH_PATH)/.installed: $(BASH_TAR)
+ mkdir -p $(BUILD_PATH)
+ flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
+ touch $@
+
+$(BASH_PATH)/bash: | $(BASH_PATH)/.installed $(USERSPACE_DEPS)
+ cd $(BASH_PATH) && ./configure --prefix=/ $(CROSS_COMPILE_FLAG) --without-bash-malloc --disable-debugger --disable-help-builtin --disable-history --disable-multibyte --disable-progcomp --disable-readline --disable-mem-scramble
+ $(MAKE) -C $(BASH_PATH)
+ $(STRIP) -s $@
+
+$(IPROUTE2_PATH)/.installed: $(IPROUTE2_TAR)
+ mkdir -p $(BUILD_PATH)
+ flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
+ printf 'CC:=$(CC)\nPKG_CONFIG:=pkg-config\nTC_CONFIG_XT:=n\nTC_CONFIG_ATM:=n\nTC_CONFIG_IPSET:=n\nIP_CONFIG_SETNS:=y\nHAVE_ELF:=n\nHAVE_MNL:=y\nHAVE_BERKELEY_DB:=n\nHAVE_LATEX:=n\nHAVE_PDFLATEX:=n\nCFLAGS+=-DHAVE_SETNS -DHAVE_LIBMNL -I$(LIBMNL_PATH)/include\nLDLIBS+=-lmnl' > $(IPROUTE2_PATH)/config.mk
+ printf 'lib: snapshot\n\t$$(MAKE) -C lib\nip/ip: lib\n\t$$(MAKE) -C ip ip\nmisc/ss: lib\n\t$$(MAKE) -C misc ss\n' >> $(IPROUTE2_PATH)/Makefile
+ touch $@
+
+$(IPROUTE2_PATH)/ip/ip: | $(IPROUTE2_PATH)/.installed $(LIBMNL_PATH)/src/.libs/libmnl.a $(USERSPACE_DEPS)
+ LDFLAGS="$(LDFLAGS) -L$(LIBMNL_PATH)/src/.libs" PKG_CONFIG_LIBDIR="$(LIBMNL_PATH)" $(MAKE) -C $(IPROUTE2_PATH) PREFIX=/ ip/ip
+ $(STRIP) -s $(IPROUTE2_PATH)/ip/ip
+
+$(IPROUTE2_PATH)/misc/ss: | $(IPROUTE2_PATH)/.installed $(LIBMNL_PATH)/src/.libs/libmnl.a $(USERSPACE_DEPS)
+ LDFLAGS="$(LDFLAGS) -L$(LIBMNL_PATH)/src/.libs" PKG_CONFIG_LIBDIR="$(LIBMNL_PATH)" $(MAKE) -C $(IPROUTE2_PATH) PREFIX=/ misc/ss
+ $(STRIP) -s $(IPROUTE2_PATH)/misc/ss
+
+$(IPTABLES_PATH)/.installed: $(IPTABLES_TAR)
+ mkdir -p $(BUILD_PATH)
+ flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
+ sed -i -e "/nfnetlink=[01]/s:=[01]:=0:" -e "/nfconntrack=[01]/s:=[01]:=0:" $(IPTABLES_PATH)/configure
+ touch $@
+
+$(IPTABLES_PATH)/iptables/xtables-multi: | $(IPTABLES_PATH)/.installed $(LIBMNL_PATH)/src/.libs/libmnl.a $(USERSPACE_DEPS)
+ cd $(IPTABLES_PATH) && PKG_CONFIG_LIBDIR="$(LIBMNL_PATH)" ./configure --prefix=/ $(CROSS_COMPILE_FLAG) --enable-static --disable-shared --disable-nftables --disable-bpf-compiler --disable-nfsynproxy --disable-libipq --with-kernel=$(BUILD_PATH)/include
+ $(MAKE) -C $(IPTABLES_PATH)
+ $(STRIP) -s $@
+
+$(NMAP_PATH)/.installed: $(NMAP_TAR)
+ mkdir -p $(BUILD_PATH)
+ flock -s $<.lock tar -C $(BUILD_PATH) -xf $<
+ touch $@
+
+$(NMAP_PATH)/ncat/ncat: | $(NMAP_PATH)/.installed $(USERSPACE_DEPS)
+ cd $(NMAP_PATH) && ./configure --prefix=/ $(CROSS_COMPILE_FLAG) --enable-static --disable-shared --without-ndiff --without-zenmap --without-nping --with-libpcap=included --with-libpcre=included --with-libdnet=included --without-liblua --with-liblinear=included --without-nmap-update --without-openssl --with-pcap=linux
+ $(MAKE) -C $(NMAP_PATH) build-ncat
+ $(STRIP) -s $@
+
+clean:
+ rm -rf $(BUILD_PATH)
+
+distclean: clean
+ rm -rf $(DISTFILES_PATH)
+
+menuconfig: $(KERNEL_BUILD_PATH)/.config
+ $(MAKE) -C $(KERNEL_PATH) O=$(KERNEL_BUILD_PATH) ARCH=$(KERNEL_ARCH) CROSS_COMPILE=$(CROSS_COMPILE) CC="$(NOPIE_GCC)" menuconfig
+
+.PHONY: qemu build clean distclean menuconfig
+.DELETE_ON_ERROR:
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ */
+
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <fcntl.h>
+#include <sys/wait.h>
+#include <sys/mount.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/io.h>
+#include <sys/ioctl.h>
+#include <sys/reboot.h>
+#include <sys/utsname.h>
+#include <sys/sendfile.h>
+#include <linux/random.h>
+#include <linux/version.h>
+
+__attribute__((noreturn)) static void poweroff(void)
+{
+ fflush(stdout);
+ fflush(stderr);
+ reboot(RB_AUTOBOOT);
+ sleep(30);
+ fprintf(stderr, "\x1b[37m\x1b[41m\x1b[1mFailed to power off!!!\x1b[0m\n");
+ exit(1);
+}
+
+static void panic(const char *what)
+{
+ fprintf(stderr, "\n\n\x1b[37m\x1b[41m\x1b[1mSOMETHING WENT HORRIBLY WRONG\x1b[0m\n\n \x1b[31m\x1b[1m%s: %s\x1b[0m\n\n\x1b[37m\x1b[44m\x1b[1mPower off...\x1b[0m\n\n", what, strerror(errno));
+ poweroff();
+}
+
+#define pretty_message(msg) puts("\x1b[32m\x1b[1m" msg "\x1b[0m")
+
+static void print_banner(void)
+{
+ struct utsname utsname;
+ int len;
+
+ if (uname(&utsname) < 0)
+ panic("uname");
+
+ len = strlen(" WireGuard Test Suite on ") + strlen(utsname.sysname) + strlen(utsname.release) + strlen(utsname.machine);
+ printf("\x1b[45m\x1b[33m\x1b[1m%*.s\x1b[0m\n\x1b[45m\x1b[33m\x1b[1m WireGuard Test Suite on %s %s %s \x1b[0m\n\x1b[45m\x1b[33m\x1b[1m%*.s\x1b[0m\n\n", len, "", utsname.sysname, utsname.release, utsname.machine, len, "");
+}
+
+static void seed_rng(void)
+{
+ int fd;
+ struct {
+ int entropy_count;
+ int buffer_size;
+ unsigned char buffer[256];
+ } entropy = {
+ .entropy_count = sizeof(entropy.buffer) * 8,
+ .buffer_size = sizeof(entropy.buffer),
+ .buffer = "Adding real entropy is not actually important for these tests. Don't try this at home, kids!"
+ };
+
+ if (mknod("/dev/urandom", S_IFCHR | 0644, makedev(1, 9)))
+ panic("mknod(/dev/urandom)");
+ fd = open("/dev/urandom", O_WRONLY);
+ if (fd < 0)
+ panic("open(urandom)");
+ for (int i = 0; i < 256; ++i) {
+ if (ioctl(fd, RNDADDENTROPY, &entropy) < 0)
+ panic("ioctl(urandom)");
+ }
+ close(fd);
+}
+
+static void mount_filesystems(void)
+{
+ pretty_message("[+] Mounting filesystems...");
+ mkdir("/dev", 0755);
+ mkdir("/proc", 0755);
+ mkdir("/sys", 0755);
+ mkdir("/tmp", 0755);
+ mkdir("/run", 0755);
+ mkdir("/var", 0755);
+ if (mount("none", "/dev", "devtmpfs", 0, NULL))
+ panic("devtmpfs mount");
+ if (mount("none", "/proc", "proc", 0, NULL))
+ panic("procfs mount");
+ if (mount("none", "/sys", "sysfs", 0, NULL))
+ panic("sysfs mount");
+ if (mount("none", "/tmp", "tmpfs", 0, NULL))
+ panic("tmpfs mount");
+ if (mount("none", "/run", "tmpfs", 0, NULL))
+ panic("tmpfs mount");
+ if (mount("none", "/sys/kernel/debug", "debugfs", 0, NULL))
+ ; /* Not a problem if it fails.*/
+ if (symlink("/run", "/var/run"))
+ panic("run symlink");
+ if (symlink("/proc/self/fd", "/dev/fd"))
+ panic("fd symlink");
+}
+
+static void enable_logging(void)
+{
+ int fd;
+ pretty_message("[+] Enabling logging...");
+ fd = open("/proc/sys/kernel/printk", O_WRONLY);
+ if (fd >= 0) {
+ if (write(fd, "9\n", 2) != 2)
+ panic("write(printk)");
+ close(fd);
+ }
+ fd = open("/proc/sys/debug/exception-trace", O_WRONLY);
+ if (fd >= 0) {
+ if (write(fd, "1\n", 2) != 2)
+ panic("write(exception-trace)");
+ close(fd);
+ }
+ fd = open("/proc/sys/kernel/panic_on_warn", O_WRONLY);
+ if (fd >= 0) {
+ if (write(fd, "1\n", 2) != 2)
+ panic("write(panic_on_warn)");
+ close(fd);
+ }
+}
+
+static void kmod_selftests(void)
+{
+ FILE *file;
+ char line[2048], *start, *pass;
+ bool success = true;
+ pretty_message("[+] Module self-tests:");
+ file = fopen("/proc/kmsg", "r");
+ if (!file)
+ panic("fopen(kmsg)");
+ if (fcntl(fileno(file), F_SETFL, O_NONBLOCK) < 0)
+ panic("fcntl(kmsg, nonblock)");
+ while (fgets(line, sizeof(line), file)) {
+ start = strstr(line, "wireguard: ");
+ if (!start)
+ continue;
+ start += 11;
+ *strchrnul(start, '\n') = '\0';
+ if (strstr(start, "www.wireguard.com"))
+ break;
+ pass = strstr(start, ": pass");
+ if (!pass || pass[6] != '\0') {
+ success = false;
+ printf(" \x1b[31m* %s\x1b[0m\n", start);
+ } else
+ printf(" \x1b[32m* %s\x1b[0m\n", start);
+ }
+ fclose(file);
+ if (!success) {
+ puts("\x1b[31m\x1b[1m[-] Tests failed! \u2639\x1b[0m");
+ poweroff();
+ }
+}
+
+static void launch_tests(void)
+{
+ char cmdline[4096], *success_dev;
+ int status, fd;
+ pid_t pid;
+
+ pretty_message("[+] Launching tests...");
+ pid = fork();
+ if (pid == -1)
+ panic("fork");
+ else if (pid == 0) {
+ execl("/init.sh", "init", NULL);
+ panic("exec");
+ }
+ if (waitpid(pid, &status, 0) < 0)
+ panic("waitpid");
+ if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
+ pretty_message("[+] Tests successful! :-)");
+ fd = open("/proc/cmdline", O_RDONLY);
+ if (fd < 0)
+ panic("open(/proc/cmdline)");
+ if (read(fd, cmdline, sizeof(cmdline) - 1) <= 0)
+ panic("read(/proc/cmdline)");
+ cmdline[sizeof(cmdline) - 1] = '\0';
+ for (success_dev = strtok(cmdline, " \n"); success_dev; success_dev = strtok(NULL, " \n")) {
+ if (strncmp(success_dev, "wg.success=", 11))
+ continue;
+ memcpy(success_dev + 11 - 5, "/dev/", 5);
+ success_dev += 11 - 5;
+ break;
+ }
+ if (!success_dev || !strlen(success_dev))
+ panic("Unable to find success device");
+
+ fd = open(success_dev, O_WRONLY);
+ if (fd < 0)
+ panic("open(success_dev)");
+ if (write(fd, "success\n", 8) != 8)
+ panic("write(success_dev)");
+ close(fd);
+ } else {
+ const char *why = "unknown cause";
+ int what = -1;
+
+ if (WIFEXITED(status)) {
+ why = "exit code";
+ what = WEXITSTATUS(status);
+ } else if (WIFSIGNALED(status)) {
+ why = "signal";
+ what = WTERMSIG(status);
+ }
+ printf("\x1b[31m\x1b[1m[-] Tests failed with %s %d! \u2639\x1b[0m\n", why, what);
+ }
+}
+
+static void ensure_console(void)
+{
+ for (unsigned int i = 0; i < 1000; ++i) {
+ int fd = open("/dev/console", O_RDWR);
+ if (fd < 0) {
+ usleep(50000);
+ continue;
+ }
+ dup2(fd, 0);
+ dup2(fd, 1);
+ dup2(fd, 2);
+ close(fd);
+ if (write(1, "\0\0\0\0\n", 5) == 5)
+ return;
+ }
+ panic("Unable to open console device");
+}
+
+static void clear_leaks(void)
+{
+ int fd;
+
+ fd = open("/sys/kernel/debug/kmemleak", O_WRONLY);
+ if (fd < 0)
+ return;
+ pretty_message("[+] Starting memory leak detection...");
+ write(fd, "clear\n", 5);
+ close(fd);
+}
+
+static void check_leaks(void)
+{
+ int fd;
+
+ fd = open("/sys/kernel/debug/kmemleak", O_WRONLY);
+ if (fd < 0)
+ return;
+ pretty_message("[+] Scanning for memory leaks...");
+ sleep(2); /* Wait for any grace periods. */
+ write(fd, "scan\n", 5);
+ close(fd);
+
+ fd = open("/sys/kernel/debug/kmemleak", O_RDONLY);
+ if (fd < 0)
+ return;
+ if (sendfile(1, fd, NULL, 0x7ffff000) > 0)
+ panic("Memory leaks encountered");
+ close(fd);
+}
+
+int main(int argc, char *argv[])
+{
+ seed_rng();
+ ensure_console();
+ print_banner();
+ mount_filesystems();
+ kmod_selftests();
+ enable_logging();
+ clear_leaks();
+ launch_tests();
+ check_leaks();
+ poweroff();
+ return 1;
+}
projects / openwrt / staging / blogic.git / commitdiff