support aarch64

This commit is contained in:
Fancy Zhang
2020-07-10 23:06:52 +08:00
parent 134caa9c78
commit f397900adc
12 changed files with 364 additions and 26 deletions

2
.gitignore vendored
View File

@@ -1,4 +1,4 @@
build
build*
.directory
.clangd
v2ray_config/proxy

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@@ -6,7 +6,7 @@ project(cgproxy VERSION 0.18)
include(GNUInstallDirs)
add_compile_options(-Wall -Wextra -Wpedantic -Wno-unused-result -Wno-unused-parameter)
add_compile_options(-Wall -Wextra -Wpedantic -Wno-unused-result -Wno-unused-parameter -Wl,--no-undefined)
# for clangd
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

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@@ -0,0 +1,216 @@
/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
/* THIS FILE IS AUTOGENERATED! */
#ifndef __EXECSNOOP_KERN_SKEL_H__
#define __EXECSNOOP_KERN_SKEL_H__
#include <stdlib.h>
#include <bpf/libbpf.h>
struct execsnoop_kern {
struct bpf_object_skeleton *skeleton;
struct bpf_object *obj;
struct {
struct bpf_map *perf_events;
struct bpf_map *records;
} maps;
struct {
struct bpf_program *syscall_enter_execve;
struct bpf_program *syscall_exit_execve;
} progs;
struct {
struct bpf_link *syscall_enter_execve;
struct bpf_link *syscall_exit_execve;
} links;
};
static void
execsnoop_kern__destroy(struct execsnoop_kern *obj)
{
if (!obj)
return;
if (obj->skeleton)
bpf_object__destroy_skeleton(obj->skeleton);
free(obj);
}
static inline int
execsnoop_kern__create_skeleton(struct execsnoop_kern *obj);
static inline struct execsnoop_kern *
execsnoop_kern__open_opts(const struct bpf_object_open_opts *opts)
{
struct execsnoop_kern *obj;
obj = (typeof(obj))calloc(1, sizeof(*obj));
if (!obj)
return NULL;
if (execsnoop_kern__create_skeleton(obj))
goto err;
if (bpf_object__open_skeleton(obj->skeleton, opts))
goto err;
return obj;
err:
execsnoop_kern__destroy(obj);
return NULL;
}
static inline struct execsnoop_kern *
execsnoop_kern__open(void)
{
return execsnoop_kern__open_opts(NULL);
}
static inline int
execsnoop_kern__load(struct execsnoop_kern *obj)
{
return bpf_object__load_skeleton(obj->skeleton);
}
static inline struct execsnoop_kern *
execsnoop_kern__open_and_load(void)
{
struct execsnoop_kern *obj;
obj = execsnoop_kern__open();
if (!obj)
return NULL;
if (execsnoop_kern__load(obj)) {
execsnoop_kern__destroy(obj);
return NULL;
}
return obj;
}
static inline int
execsnoop_kern__attach(struct execsnoop_kern *obj)
{
return bpf_object__attach_skeleton(obj->skeleton);
}
static inline void
execsnoop_kern__detach(struct execsnoop_kern *obj)
{
return bpf_object__detach_skeleton(obj->skeleton);
}
static inline int
execsnoop_kern__create_skeleton(struct execsnoop_kern *obj)
{
struct bpf_object_skeleton *s;
s = (typeof(s))calloc(1, sizeof(*s));
if (!s)
return -1;
obj->skeleton = s;
s->sz = sizeof(*s);
s->name = "execsnoop_kern";
s->obj = &obj->obj;
/* maps */
s->map_cnt = 2;
s->map_skel_sz = sizeof(*s->maps);
s->maps = (typeof(s->maps))calloc(s->map_cnt, s->map_skel_sz);
if (!s->maps)
goto err;
s->maps[0].name = "perf_events";
s->maps[0].map = &obj->maps.perf_events;
s->maps[1].name = "records";
s->maps[1].map = &obj->maps.records;
/* programs */
s->prog_cnt = 2;
s->prog_skel_sz = sizeof(*s->progs);
s->progs = (typeof(s->progs))calloc(s->prog_cnt, s->prog_skel_sz);
if (!s->progs)
goto err;
s->progs[0].name = "syscall_enter_execve";
s->progs[0].prog = &obj->progs.syscall_enter_execve;
s->progs[0].link = &obj->links.syscall_enter_execve;
s->progs[1].name = "syscall_exit_execve";
s->progs[1].prog = &obj->progs.syscall_exit_execve;
s->progs[1].link = &obj->links.syscall_exit_execve;
s->data_sz = 2024;
s->data = (void *)"\
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return 0;
err:
bpf_object__destroy_skeleton(s);
return -1;
}
#endif /* __EXECSNOOP_KERN_SKEL_H__ */

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@@ -0,0 +1,40 @@
## Arm64 docker
https://www.stereolabs.com/docs/docker/building-arm-container-on-x86/
https://wiki.debian.org/QemuUserEmulation
- install
```bash
# install qemu with user emulation
pacman -S qemu qemu-user-static
# docker
docker pull arm64v8/ubuntu
docker pull multiarch/qemu-user-static
# register
docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
```
- test
```bash
docker run --rm -t arm64/ubuntu uname -m
```
- run
```bash
# start container background
docker run -dit --name arm64 -v /home/fancy/workspace-xps:/data arm64v8/ubuntu
# enter container
docker exec -it arm64 bash
# use another repository: https://mirrors.tuna.tsinghua.edu.cn/help/ubuntu/
# install in container for kernel bpf build
apt install install dialog apt-utils
apt install build-essential gcc clang llvm
apt install bison flex bc rsync libssl-dev binutils-dev libreadline-dev libelf
apt install make cmake nlohmann-json3-dev rpm
```

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@@ -34,7 +34,7 @@ struct bpf_map_def SEC("maps") records = {
.type = BPF_MAP_TYPE_HASH,
.key_size = sizeof(pid_t),
.value_size = sizeof(struct event),
.max_entries = 1024,
.max_entries = 10240,
};
struct bpf_map_def SEC("maps") perf_events = {
.type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,

Binary file not shown.

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@@ -1,9 +1,15 @@
#include "execsnoop_share.h"
#include <errno.h>
#include <signal.h>
#include <bpf/libbpf.h>
#include <sys/resource.h>
#include "execsnoop_kern_skel.h"
#include "execsnoop_share.h"
#if defined(__x86_64__)
#include "x86_64/execsnoop_kern_skel.h"
#elif defined(__aarch64__)
#include "aarch64/execsnoop_kern_skel.h"
#endif
namespace CGPROXY::EXECSNOOP {
@@ -73,7 +79,7 @@ main_loop:
while ((err = perf_buffer__poll(pb, -1)) >= 0) {}
perf_buffer__free(pb);
/* handle Interrupted system call when sleep*/
/* handle Interrupted system call when sleep */
if (err == -EINTR) goto main_loop;
perror("perf_buffer__poll");

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@@ -1,9 +1,12 @@
#include <signal.h>
#include <bpf/libbpf.h>
#include <sys/resource.h>
#include "execsnoop_kern_skel.h"
// #include "bpf_load.h"
#if defined(__x86_64__)
#include "x86_64/execsnoop_kern_skel.h"
#elif defined(__aarch64__)
#include "aarch64/execsnoop_kern_skel.h"
#endif
#define TASK_COMM_LEN 16
struct event {

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@@ -6,16 +6,20 @@
## Build in kernel tree
- download kernel source code
- ready and config kernel tree
```bash
# kernel config
gunzip -c /proc/config.gz > .config
make oldconfig && make prepare
#gunzip -c /proc/config.gz > .config
#make oldconfig && make prepare
make defconfig && make prepare
# install headers to ./usr/include
make headers_install -j8
# build bpf
make M=samples/bpf -j8
# build samples/bpf
make samples/bpf -j8
# build bpftool
make tools/bpf -j8
```
- put or link `execsnoop_kern.c` and `execsnoop_user.c` to *samples/bpf/*
@@ -43,8 +47,6 @@ sudo bash -c "ulimit -l unlimited && ./execsnoop"
## With bpftool
- move compiled `execsnoop_kern.o` to current `exexcnoop-kernel` directory
- generate `execsnoop_kern_skel.h`
```
@@ -57,12 +59,6 @@ bpftool gen skeleton execsnoop_kern.o > execsnoop_kern_skel.h
gcc -Wall -O2 execsnoop_user_1.c -o execsnoop -lbpf
```
**Followings are just some notes. they are not really related.**
## Detail build command
using `make V=1 M=samples/bpf | tee -a log.txt` to get and filter following command
@@ -125,6 +121,75 @@ clang -nostdinc \
-lelf -lz
```
## ARM64
```bash
# if cross compile
export ARCH=arm64
export CROSS_COMPILE=aarch64-linux-gnu-
```
The recommend way is to build in [ARM Docker Containers](https://www.stereolabs.com/docs/docker/building-arm-container-on-x86/). see `arm_docker.md`
- make
```bash
# clean
make mrproper
make -C tools clean
make -C samples/bpf clean
# make
make defconfig && make prepare
make headers_install -j8
# build samples/bpf
make samples/bpf -j8
# build bpftool
make tools/bpf -j8
```
- detail build `execsnoop_kern.o`
note `-g` may not needed
```bash
clang -nostdinc \
-isystem /usr/lib/gcc/aarch64-linux-gnu/9/include \
-I./arch/arm64/include -I./arch/arm64/include/generated \
-I./include -I./arch/arm64/include/uapi \
-I./arch/arm64/include/generated/uapi \
-I./include/uapi \
-I./include/generated/uapi \
-include ./include/linux/kconfig.h \
-I./samples/bpf \
-I./tools/testing/selftests/bpf/ \
-I./tools/lib/ \
-include asm_goto_workaround.h \
-D__KERNEL__ -D__BPF_TRACING__ -Wno-unused-value -Wno-pointer-sign \
-D__TARGET_ARCH_arm64 -Wno-compare-distinct-pointer-types \
-Wno-gnu-variable-sized-type-not-at-end \
-Wno-address-of-packed-member -Wno-tautological-compare \
-Wno-unknown-warning-option \
-fno-stack-protector \
-O2 -emit-llvm -c samples/bpf/execsnoop_kern.c \
-o -| llc -march=bpf -filetype=obj -o samples/bpf/execsnoop_kern.o
```
- generate
```
bpftool gen skeleton execsnoop_kern.o > aarch64/execsnoop_kern_skel.h
```
http://www.redfelineninja.org.uk/daniel/2018/02/running-an-iso-installer-image-for-arm64-aarch64-using-qemu-and-kvm/
```
qemu-system-aarch64 -cpu cortex-a53 -M virt -m 2048 -nographic \
-drive if=pflash,format=raw,file=QEMU_EFI.img \
-drive if=virtio,format=raw,file=ubuntu-20.04-live-server-arm64.iso
```
## Some resources

View File

@@ -150,10 +150,10 @@ execsnoop_kern__create_skeleton(struct execsnoop_kern *obj)
\xbf\xa2\0\0\0\0\0\0\x07\x02\0\0\xfc\xff\xff\xff\x18\x01\0\0\0\0\0\0\0\0\0\0\0\
\0\0\0\x85\0\0\0\x01\0\0\0\xbf\x08\0\0\0\0\0\0\x15\x08\x12\0\0\0\0\0\x77\x06\0\
\0\x20\0\0\0\x61\xa1\xfc\xff\0\0\0\0\x63\x78\x1c\0\0\0\0\0\x63\x68\x14\0\0\0\0\
\0\x63\x18\x10\0\0\0\0\0\x85\0\0\0\x23\0\0\0\x07\0\0\0\x18\x05\0\0\xbf\xa1\0\0\
\0\x63\x18\x10\0\0\0\0\0\x85\0\0\0\x23\0\0\0\x07\0\0\0\xa0\x04\0\0\xbf\xa1\0\0\
\0\0\0\0\x07\x01\0\0\xf0\xff\xff\xff\xb7\x02\0\0\x08\0\0\0\xbf\x03\0\0\0\0\0\0\
\x85\0\0\0\x04\0\0\0\x07\x08\0\0\x18\0\0\0\x79\xa3\xf0\xff\0\0\0\0\x07\x03\0\0\
\x0c\x05\0\0\xbf\x81\0\0\0\0\0\0\xb7\x02\0\0\x04\0\0\0\x85\0\0\0\x04\0\0\0\xb7\
\x94\x04\0\0\xbf\x81\0\0\0\0\0\0\xb7\x02\0\0\x04\0\0\0\x85\0\0\0\x04\0\0\0\xb7\
\0\0\0\0\0\0\0\x95\0\0\0\0\0\0\0\xbf\x16\0\0\0\0\0\0\x85\0\0\0\x0e\0\0\0\x63\
\x0a\xfc\xff\0\0\0\0\xbf\xa2\0\0\0\0\0\0\x07\x02\0\0\xfc\xff\xff\xff\x18\x01\0\
\0\0\0\0\0\0\0\0\0\0\0\0\0\x85\0\0\0\x01\0\0\0\xbf\x07\0\0\0\0\0\0\x15\x07\x13\
@@ -163,7 +163,7 @@ execsnoop_kern__create_skeleton(struct execsnoop_kern *obj)
\0\xbf\x74\0\0\0\0\0\0\xb7\x05\0\0\x20\0\0\0\x85\0\0\0\x19\0\0\0\xbf\xa2\0\0\0\
\0\0\0\x07\x02\0\0\xfc\xff\xff\xff\x18\x01\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x85\0\0\
\0\x03\0\0\0\xb7\0\0\0\0\0\0\0\x95\0\0\0\0\0\0\0\x01\0\0\0\x04\0\0\0\x20\0\0\0\
\0\x04\0\0\0\0\0\0\x04\0\0\0\x04\0\0\0\x04\0\0\0\x80\0\0\0\0\0\0\0\x47\x50\x4c\
\0\x28\0\0\0\0\0\0\x04\0\0\0\x04\0\0\0\x04\0\0\0\x80\0\0\0\0\0\0\0\x47\x50\x4c\
\0\x06\x07\x05\0\x10\0\0\0\0\0\0\0\x01\x7a\x52\0\x08\x7c\x0b\x01\x0c\0\0\0\x18\
\0\0\0\x18\0\0\0\0\0\0\0\0\0\0\0\x80\x01\0\0\0\0\0\0\0\0\0\0\x1c\0\0\0\x34\0\0\
\0\0\0\0\0\0\0\0\0\xf8\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\

View File

@@ -4,8 +4,12 @@ set(CPACK_PACKAGE_NAME "cgproxy")
set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "cgproxy will transparent proxy anything running in specific cgroup.It aslo supports global transparent proxy and gateway proxy")
## deb pack
execute_process(COMMAND dpkg --print-architecture
OUTPUT_VARIABLE DEBIAN_ARCH
OUTPUT_STRIP_TRAILING_WHITESPACE)
set(CPACK_DEBIAN_FILE_NAME ${CPACK_PACKAGE_NAME}_${CMAKE_PROJECT_VERSION}_${DEBIAN_ARCH}.deb)
set(CPACK_DEBIAN_PACKAGE_NAME "cgproxy")
set(CPACK_DEBIAN_PACKAGE_ARCHITECTURE "amd64")
# set(CPACK_DEBIAN_PACKAGE_ARCHITECTURE "amd64")
set(CPACK_DEBIAN_PACKAGE_DEPENDS "systemd")
set(CPACK_DEBIAN_PACKAGE_SECTION "network")
set(CPACK_DEBIAN_PACKAGE_PRIORITY "Optional")
@@ -14,7 +18,11 @@ set(CPACK_DEBIAN_PACKAGE_MAINTAINER "springzfx@gmail.com")
set(CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA "${CMAKE_CURRENT_SOURCE_DIR}/postinst;${CMAKE_CURRENT_SOURCE_DIR}/prerm")
## rpm pack
set(CPACK_RPM_PACKAGE_ARCHITECTURE, "x86_64")
execute_process(COMMAND uname -m
OUTPUT_VARIABLE RPM_ARCH
OUTPUT_STRIP_TRAILING_WHITESPACE)
set(CPACK_RPM_FILE_NAME ${CPACK_PACKAGE_NAME}_${CMAKE_PROJECT_VERSION}_${RPM_ARCH}.rpm)
# set(CPACK_RPM_PACKAGE_ARCHITECTURE, "x86_64")
set(CPACK_RPM_PACKAGE_REQUIRES "systemd")
set(CPACK_RPM_PACKAGE_GROUP "network")
set(CPACK_RPM_PACKAGE_URL "https://github.com/springzfx/cgproxy")