mirror of
https://github.com/criyle/go-sandbox.git
synced 2025-11-04 14:49:53 +08:00
add support to arm64
This commit is contained in:
parent
6dc2eb3b5d
commit
c8940e7caa
@ -18,7 +18,7 @@ Default file access action:
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+ check file read / write: `open`, `openat`
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+ check file read: `readlink`, `readlinkat`
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+ check file write: `unlink`, `unlinkat`, `chmod`, `rename`
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+ check file access: `stat`, `lstat`, `access`
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+ check file access: `stat`, `lstat`, `access`, `faccessat`
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+ check file exec: `execve`
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Packages:
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@ -32,10 +32,12 @@ Executable:
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Configuations:
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+ run_program/config.go: all configs toward running specs
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Features:
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+ Percise resource limits (s -> ms, mb -> kb)
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+ More architectures (arm32, arm64, x86)
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TODO:
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+ allow multiple traced programs
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+ allow pipes
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+ Percise resource limits (s -> ms, mb -> kb)
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+ More architectures (arm32, x86)
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+ ...
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213
runconfig/config.go
Normal file
213
runconfig/config.go
Normal file
@ -0,0 +1,213 @@
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package runconfig
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// This file includes configs for the run program settings
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var (
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// default read permission files
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defaultReadableFiles = []string{
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"/etc/ld.so.nohwcap",
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"/etc/ld.so.preload",
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"/etc/ld.so.cache",
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"/usr/lib/locale/locale-archive",
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"/proc/self/exe",
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"/etc/timezone",
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"/usr/share/zoneinfo/",
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"/dev/random",
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"/dev/urandom",
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"/proc/meminfo",
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"/etc/localtime",
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}
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// default write permission files
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defaultWritableFiles = []string{"/dev/null"}
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// default allowed safe syscalls
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defaultSyscallAllows = []string{
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// file access through fd
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"read",
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"write",
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"readv",
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"writev",
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"close",
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"fstat",
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"lseek",
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"dup",
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"dup2",
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"dup3",
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"ioctl",
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"fcntl",
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"fadvise64",
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// memory action
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"mmap",
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"mprotect",
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"munmap",
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"brk",
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"mremap",
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"msync",
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"mincore",
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"madvise",
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// signal action
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"rt_sigaction",
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"rt_sigprocmask",
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"rt_sigreturn",
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"rt_sigpending",
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"sigaltstack",
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// get current work dir
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"getcwd",
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// process exit
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"exit",
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"exit_group",
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// others
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"arch_prctl",
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"gettimeofday",
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"getrlimit",
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"getrusage",
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"times",
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"time",
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"clock_gettime",
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"restart_syscall",
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}
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// default syscalls to trace
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defaultSyscallTraces = []string{
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// should be traced
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"execve",
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// file open
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"open",
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"openat",
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// file delete
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"unlink",
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"unlinkat",
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// soft link
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"readlink",
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"readlinkat",
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// permission check
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"lstat",
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"stat",
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"access",
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"faccessat",
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}
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// process related syscall if allowProc enabled
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defaultProcSyscalls = []string{"clone", "fork", "vfork", "nanosleep", "execve"}
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// config for different type of program
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// workpath and arg0 have additional read / stat permission
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runprogramConfig = map[string]ProgramConfig{
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"python2.7": ProgramConfig{
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Syscall: SyscallConfig{
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ExtraAllow: []string{
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"futex", "getdents", "getdents64", "prlimit64", "getpid", "sysinfo",
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},
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ExtraCount: map[string]int{
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"set_tid_address": 1,
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"set_robust_list": 1,
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},
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},
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FileAccess: FileAccessConfig{
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ExtraRead: []string{
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"/usr/bin/python2.7",
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"/usr/lib/python2.7/",
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"/usr/bin/lib/python2.7/",
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"/usr/local/lib/python2.7/",
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"/usr/lib/pymodules/python2.7/",
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"/usr/bin/Modules/",
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"/usr/bin/pybuilddir.txt",
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"/usr/lib/locale/",
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"./answer.code",
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},
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ExtraStat: []string{
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"/usr", "/usr/bin",
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},
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},
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RunCommand: []string{"/usr/bin/python2.7", "-E", "-s", "-B"},
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},
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"python3": ProgramConfig{
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Syscall: SyscallConfig{
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ExtraAllow: []string{
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"futex", "getdents", "getdents64", "prlimit64", "getpid", "sysinfo", "getrandom",
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},
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ExtraCount: map[string]int{
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"set_tid_address": 1,
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"set_robust_list": 1,
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},
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},
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FileAccess: FileAccessConfig{
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ExtraRead: []string{
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"/usr/bin/python3",
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"/usr/lib/python3/",
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"/usr/bin/python3.6",
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"/usr/lib/python3.6/",
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"/usr/bin/lib/python3.6/",
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"/usr/local/lib/python3.6/",
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"/usr/bin/pyvenv.cfg",
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"/usr/pyvenv.cfg",
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"/usr/bin/Modules",
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"/usr/bin/pybuilddir.txt",
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"/usr/lib/dist-python",
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"/usr/lib/locale/",
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"./answer.code",
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},
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ExtraStat: []string{
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"/usr", "/usr/bin", "/usr/lib", "/usr/lib/python36.zip",
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},
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},
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RunCommand: []string{"/usr/bin/python3", "-I", "-B"},
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},
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"compiler": ProgramConfig{
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Syscall: SyscallConfig{
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ExtraAllow: []string{
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"gettid", "set_tid_address", "set_robust_list", "futex",
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"getpid", "vfork", "fork", "clone", "execve", "wait4",
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"clock_gettime", "clock_getres",
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"setrlimit", "pipe",
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"getdents64", "getdents",
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"umask", "rename", "chmod", "mkdir",
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"chdir", "fchdir",
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"ftruncate",
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"sched_getaffinity", "sched_yield",
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"uname", "sysinfo",
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"prlimit64", "getrandom",
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},
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ExtraBan: []string{"socket", "connect", "geteuid", "getuid"},
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},
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FileAccess: FileAccessConfig{
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ExtraWrite: []string{
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"/tmp/", "./",
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},
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ExtraRead: []string{
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"./",
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"../runtime/",
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"/etc/oracle/java/usagetracker.properties",
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"/usr/",
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"/lib/",
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"/lib64/",
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"/bin/",
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"/sbin/",
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"/sys/devices/system/cpu/",
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"/proc/",
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"/etc/timezone",
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"/etc/fpc-2.6.2.cfg.d/",
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"/etc/fpc.cfg",
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"/*",
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"/", // system_root
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},
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ExtraBan: []string{
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"/etc/nsswitch.conf",
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"/etc/passwd",
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},
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},
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},
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}
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)
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@ -3,211 +3,12 @@ package runconfig
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// This file includes configs for the run program settings
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var (
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// default read permission files
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defaultReadableFiles = []string{
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"/etc/ld.so.nohwcap",
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"/etc/ld.so.preload",
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"/etc/ld.so.cache",
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archReadableFiles = []string{
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"/lib/x86_64-linux-gnu/",
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"/usr/lib/x86_64-linux-gnu/",
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"/usr/lib/locale/locale-archive",
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"/proc/self/exe",
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"/etc/timezone",
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"/usr/share/zoneinfo/",
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"/dev/random",
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"/dev/urandom",
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"/proc/meminfo",
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"/etc/localtime",
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}
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// default write permission files
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defaultWritableFiles = []string{"/dev/null"}
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archSyscallAllows = []string{}
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// default allowed safe syscalls
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defaultSyscallAllows = []string{
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// file access through fd
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"read",
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"write",
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"readv",
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"writev",
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"close",
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"fstat",
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"lseek",
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"dup",
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"dup2",
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"dup3",
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"ioctl",
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"fcntl",
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// memory action
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"mmap",
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"mprotect",
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"munmap",
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"brk",
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"mremap",
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"msync",
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"mincore",
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"madvise",
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// signal action
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"rt_sigaction",
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"rt_sigprocmask",
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"rt_sigreturn",
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"rt_sigpending",
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"sigaltstack",
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// get current work dir
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"getcwd",
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// process exit
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"exit",
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"exit_group",
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// others
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"arch_prctl",
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"gettimeofday",
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"getrlimit",
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"getrusage",
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"times",
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"time",
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"clock_gettime",
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"restart_syscall",
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}
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// default syscalls to trace
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defaultSyscallTraces = []string{
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// should be traced
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"execve",
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// file open
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"open",
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"openat",
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// file delete
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"unlink",
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"unlinkat",
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// soft link
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"readlink",
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"readlinkat",
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// permission check
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"lstat",
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"stat",
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"access",
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}
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// process related syscall if allowProc enabled
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defaultProcSyscalls = []string{"clone", "fork", "vfork", "nanosleep", "execve"}
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// config for different type of program
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// workpath and arg0 have additional read / stat permission
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runprogramConfig = map[string]ProgramConfig{
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"python2.7": ProgramConfig{
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Syscall: SyscallConfig{
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ExtraAllow: []string{
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"futex", "getdents", "getdents64", "prlimit64", "getpid", "sysinfo",
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},
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ExtraCount: map[string]int{
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"set_tid_address": 1,
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"set_robust_list": 1,
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},
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},
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FileAccess: FileAccessConfig{
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ExtraRead: []string{
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"/usr/bin/python2.7",
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"/usr/lib/python2.7/",
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"/usr/bin/lib/python2.7/",
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"/usr/local/lib/python2.7/",
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"/usr/lib/pymodules/python2.7/",
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"/usr/bin/Modules/",
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"/usr/bin/pybuilddir.txt",
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"/usr/lib/locale/",
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"./answer.code",
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},
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ExtraStat: []string{
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"/usr", "/usr/bin",
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},
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},
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RunCommand: []string{"/usr/bin/python2.7", "-E", "-s", "-B"},
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},
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"python3": ProgramConfig{
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Syscall: SyscallConfig{
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ExtraAllow: []string{
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"futex", "getdents", "getdents64", "prlimit64", "getpid", "sysinfo", "getrandom",
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},
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ExtraCount: map[string]int{
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"set_tid_address": 1,
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"set_robust_list": 1,
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},
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},
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FileAccess: FileAccessConfig{
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ExtraRead: []string{
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"/usr/bin/python3",
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"/usr/lib/python3/",
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"/usr/bin/python3.6",
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"/usr/lib/python3.6/",
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"/usr/bin/lib/python3.6/",
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"/usr/local/lib/python3.6/",
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"/usr/bin/pyvenv.cfg",
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"/usr/pyvenv.cfg",
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"/usr/bin/Modules",
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"/usr/bin/pybuilddir.txt",
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"/usr/lib/dist-python",
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"/usr/lib/locale/",
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"./answer.code",
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},
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ExtraStat: []string{
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"/usr", "/usr/bin", "/usr/lib", "/usr/lib/python36.zip",
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},
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},
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RunCommand: []string{"/usr/bin/python3", "-I", "-B"},
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},
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"compiler": ProgramConfig{
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Syscall: SyscallConfig{
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ExtraAllow: []string{
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"gettid", "set_tid_address", "set_robust_list", "futex",
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"getpid", "vfork", "fork", "clone", "execve", "wait4",
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"clock_gettime", "clock_getres",
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"setrlimit", "pipe",
|
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"getdents64", "getdents",
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"umask", "rename", "chmod", "mkdir",
|
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"chdir", "fchdir",
|
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"ftruncate",
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"sched_getaffinity", "sched_yield",
|
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"uname", "sysinfo",
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"prlimit64", "getrandom",
|
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},
|
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ExtraBan: []string{"socket", "connect", "geteuid", "getuid"},
|
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},
|
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FileAccess: FileAccessConfig{
|
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ExtraWrite: []string{
|
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"/tmp/", "./",
|
||||
},
|
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ExtraRead: []string{
|
||||
"./",
|
||||
"../runtime/",
|
||||
"/etc/oracle/java/usagetracker.properties",
|
||||
"/usr/",
|
||||
"/lib/",
|
||||
"/lib64/",
|
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"/bin/",
|
||||
"/sbin/",
|
||||
"/sys/devices/system/cpu/",
|
||||
"/proc/",
|
||||
"/etc/timezone",
|
||||
"/etc/fpc-2.6.2.cfg.d/",
|
||||
"/etc/fpc.cfg",
|
||||
"/*",
|
||||
"/", // system_root
|
||||
},
|
||||
ExtraBan: []string{
|
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"/etc/nsswitch.conf",
|
||||
"/etc/passwd",
|
||||
},
|
||||
},
|
||||
},
|
||||
}
|
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archSyscallTraces = []string{}
|
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)
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|
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@ -3,221 +3,24 @@ package runconfig
|
||||
// This file includes configs for the run program settings
|
||||
|
||||
var (
|
||||
// default read permission files
|
||||
defaultReadableFiles = []string{
|
||||
"/etc/ld.so.nohwcap",
|
||||
"/etc/ld.so.preload",
|
||||
"/etc/ld.so.cache",
|
||||
"/lib/arm-linux-gnueabihf/", // 32-bit
|
||||
"/usr/lib/arm-linux-gnueabihf/", // 32-bit
|
||||
"/usr/lib/locale/locale-archive",
|
||||
"/proc/self/exe",
|
||||
"/etc/timezone",
|
||||
"/usr/share/zoneinfo/",
|
||||
"/dev/random",
|
||||
"/dev/urandom",
|
||||
"/proc/meminfo",
|
||||
"/etc/localtime",
|
||||
archReadableFiles = []string{
|
||||
"/lib/arm-linux-gnueabihf/",
|
||||
"/usr/lib/arm-linux-gnueabihf/",
|
||||
}
|
||||
|
||||
// default write permission files
|
||||
defaultWritableFiles = []string{"/dev/null"}
|
||||
|
||||
// default allowed safe syscalls
|
||||
defaultSyscallAllows = []string{
|
||||
// file access through fd
|
||||
"read",
|
||||
"write",
|
||||
"readv",
|
||||
"writev",
|
||||
"close",
|
||||
"fstat",
|
||||
archSyscallAllows = []string{
|
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"fstat64", // 32-bit
|
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"lseek",
|
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"_llseek", // 32-bit
|
||||
"dup",
|
||||
"dup2",
|
||||
"dup3",
|
||||
"ioctl",
|
||||
"fcntl",
|
||||
"fcntl64", // 32-bit
|
||||
|
||||
// memory action
|
||||
"mmap",
|
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"mmap2", // 32-bit
|
||||
"mprotect",
|
||||
"munmap",
|
||||
"brk",
|
||||
"mremap",
|
||||
"msync",
|
||||
"mincore",
|
||||
"madvise",
|
||||
|
||||
// signal action
|
||||
"rt_sigaction",
|
||||
"rt_sigprocmask",
|
||||
"rt_sigreturn",
|
||||
"rt_sigpending",
|
||||
"sigaltstack",
|
||||
|
||||
// get current work dir
|
||||
"getcwd",
|
||||
|
||||
// process exit
|
||||
"exit",
|
||||
"exit_group",
|
||||
|
||||
// others
|
||||
"arch_prctl",
|
||||
|
||||
"gettimeofday",
|
||||
"getrlimit",
|
||||
"getrusage",
|
||||
"times",
|
||||
"time",
|
||||
"clock_gettime",
|
||||
|
||||
"restart_syscall",
|
||||
|
||||
"mmap2", // 32-bit
|
||||
// arch
|
||||
"uname",
|
||||
"set_tls",
|
||||
"arm_fadvise64_64",
|
||||
}
|
||||
|
||||
// default syscalls to trace
|
||||
defaultSyscallTraces = []string{
|
||||
// should be traced
|
||||
"execve",
|
||||
|
||||
// file open
|
||||
"open",
|
||||
"openat",
|
||||
|
||||
// file delete
|
||||
"unlink",
|
||||
"unlinkat",
|
||||
|
||||
// soft link
|
||||
"readlink",
|
||||
"readlinkat",
|
||||
|
||||
// permission check
|
||||
"lstat",
|
||||
archSyscallTraces = []string{
|
||||
"lstat64", // 32-bit
|
||||
"stat",
|
||||
"stat64", // 32-bit
|
||||
"access",
|
||||
}
|
||||
|
||||
// process related syscall if allowProc enabled
|
||||
defaultProcSyscalls = []string{"clone", "fork", "vfork", "nanosleep", "execve"}
|
||||
|
||||
// config for different type of program
|
||||
// workpath and arg0 have additional read / stat permission
|
||||
runprogramConfig = map[string]ProgramConfig{
|
||||
"python2.7": ProgramConfig{
|
||||
Syscall: SyscallConfig{
|
||||
ExtraAllow: []string{
|
||||
"futex", "getdents", "getdents64", "prlimit64", "getpid", "sysinfo",
|
||||
},
|
||||
ExtraCount: map[string]int{
|
||||
"set_tid_address": 1,
|
||||
"set_robust_list": 1,
|
||||
},
|
||||
},
|
||||
FileAccess: FileAccessConfig{
|
||||
ExtraRead: []string{
|
||||
"/usr/bin/python2.7",
|
||||
"/usr/lib/python2.7/",
|
||||
"/usr/bin/lib/python2.7/",
|
||||
"/usr/local/lib/python2.7/",
|
||||
"/usr/lib/pymodules/python2.7/",
|
||||
"/usr/bin/Modules/",
|
||||
"/usr/bin/pybuilddir.txt",
|
||||
"/usr/lib/locale/",
|
||||
"./answer.code",
|
||||
},
|
||||
ExtraStat: []string{
|
||||
"/usr", "/usr/bin",
|
||||
},
|
||||
},
|
||||
RunCommand: []string{"/usr/bin/python2.7", "-E", "-s", "-B"},
|
||||
},
|
||||
"python3": ProgramConfig{
|
||||
Syscall: SyscallConfig{
|
||||
ExtraAllow: []string{
|
||||
"futex", "getdents", "getdents64", "prlimit64", "getpid", "sysinfo", "getrandom",
|
||||
},
|
||||
ExtraCount: map[string]int{
|
||||
"set_tid_address": 1,
|
||||
"set_robust_list": 1,
|
||||
},
|
||||
},
|
||||
FileAccess: FileAccessConfig{
|
||||
ExtraRead: []string{
|
||||
"/usr/bin/python3",
|
||||
"/usr/lib/python3/",
|
||||
"/usr/bin/python3.6",
|
||||
"/usr/lib/python3.6/",
|
||||
"/usr/bin/lib/python3.6/",
|
||||
"/usr/local/lib/python3.6/",
|
||||
"/usr/bin/pyvenv.cfg",
|
||||
"/usr/pyvenv.cfg",
|
||||
"/usr/bin/Modules",
|
||||
"/usr/bin/pybuilddir.txt",
|
||||
"/usr/lib/dist-python",
|
||||
"/usr/lib/locale/",
|
||||
"./answer.code",
|
||||
},
|
||||
ExtraStat: []string{
|
||||
"/usr", "/usr/bin", "/usr/lib", "/usr/lib/python36.zip",
|
||||
},
|
||||
},
|
||||
RunCommand: []string{"/usr/bin/python3", "-I", "-B"},
|
||||
},
|
||||
"compiler": ProgramConfig{
|
||||
Syscall: SyscallConfig{
|
||||
ExtraAllow: []string{
|
||||
"gettid", "set_tid_address", "set_robust_list", "futex",
|
||||
"getpid", "vfork", "fork", "clone", "execve", "wait4",
|
||||
"clock_gettime", "clock_getres",
|
||||
"setrlimit", "pipe",
|
||||
"getdents64", "getdents",
|
||||
"umask", "rename", "chmod", "mkdir",
|
||||
"chdir", "fchdir",
|
||||
"ftruncate",
|
||||
"sched_getaffinity", "sched_yield",
|
||||
"uname", "sysinfo",
|
||||
"prlimit64", "getrandom",
|
||||
},
|
||||
ExtraBan: []string{"socket", "connect", "geteuid", "getuid"},
|
||||
},
|
||||
FileAccess: FileAccessConfig{
|
||||
ExtraWrite: []string{
|
||||
"/tmp/", "./",
|
||||
},
|
||||
ExtraRead: []string{
|
||||
"./",
|
||||
"../runtime/",
|
||||
"/etc/oracle/java/usagetracker.properties",
|
||||
"/usr/",
|
||||
"/lib/",
|
||||
"/lib64/",
|
||||
"/bin/",
|
||||
"/sbin/",
|
||||
"/sys/devices/system/cpu/",
|
||||
"/proc/",
|
||||
"/etc/timezone",
|
||||
"/etc/fpc-2.6.2.cfg.d/",
|
||||
"/etc/fpc.cfg",
|
||||
"/*",
|
||||
"/", // system_root
|
||||
},
|
||||
ExtraBan: []string{
|
||||
"/etc/nsswitch.conf",
|
||||
"/etc/passwd",
|
||||
},
|
||||
},
|
||||
},
|
||||
"stat64", // 32-bit
|
||||
}
|
||||
)
|
||||
|
||||
14
runconfig/config_arm64.go
Normal file
14
runconfig/config_arm64.go
Normal file
@ -0,0 +1,14 @@
|
||||
package runconfig
|
||||
|
||||
// This file includes configs for the run program settings
|
||||
|
||||
var (
|
||||
archReadableFiles = []string{
|
||||
"/lib/aarch64-linux-gnu/",
|
||||
"/usr/lib/aarch64-linux-gnu/",
|
||||
}
|
||||
|
||||
archSyscallAllows = []string{}
|
||||
|
||||
archSyscallTraces = []string{}
|
||||
)
|
||||
@ -5,11 +5,12 @@ func GetConf(pType, workPath string, args, addRead, addWrite []string, allowProc
|
||||
var (
|
||||
fs = NewFileSets()
|
||||
sc = NewSyscallCounter()
|
||||
allow = append([]string{}, defaultSyscallAllows...)
|
||||
trace = append([]string{}, defaultSyscallTraces...)
|
||||
allow = append(append([]string{}, defaultSyscallAllows...), archSyscallAllows...)
|
||||
trace = append(append([]string{}, defaultSyscallTraces...), archSyscallTraces...)
|
||||
)
|
||||
|
||||
fs.Readable.AddRange(defaultReadableFiles, workPath)
|
||||
fs.Readable.AddRange(archReadableFiles, workPath)
|
||||
fs.Writable.AddRange(defaultWritableFiles, workPath)
|
||||
fs.AddFilePermission(args[0], FilePermRead)
|
||||
fs.AddFilePermission(workPath, FilePermRead)
|
||||
|
||||
@ -79,6 +79,8 @@ func (h *tracerHandler) Handle(ctx *tracer.Context) tracer.TraceAction {
|
||||
|
||||
case "access":
|
||||
action = h.checkStat(ctx, ctx.Arg0())
|
||||
case "faccessat":
|
||||
action = h.checkStat(ctx, ctx.Arg1())
|
||||
|
||||
case "stat", "stat64":
|
||||
action = h.checkStat(ctx, ctx.Arg0())
|
||||
@ -100,6 +102,7 @@ func (h *tracerHandler) Handle(ctx *tracer.Context) tracer.TraceAction {
|
||||
case TraceAllow:
|
||||
return tracer.TraceAllow
|
||||
case TraceBan:
|
||||
h.Debug("<soft ban syscall>")
|
||||
return softBanSyscall(ctx)
|
||||
default:
|
||||
return tracer.TraceKill
|
||||
|
||||
@ -116,7 +116,7 @@ func (r *Runner) Start() (int, error) {
|
||||
// Pass 1: fd[i] < i => nextfd
|
||||
for i := 0; i < len(fd); i++ {
|
||||
if fd[i] >= 0 && fd[i] < int(i) {
|
||||
_, _, err1 = syscall.RawSyscall(syscall.SYS_DUP2, uintptr(fd[i]), uintptr(nextfd), 0)
|
||||
_, _, err1 = syscall.RawSyscall(syscall.SYS_DUP3, uintptr(fd[i]), uintptr(nextfd), 0)
|
||||
if err1 != 0 {
|
||||
goto childerror
|
||||
}
|
||||
@ -141,7 +141,7 @@ func (r *Runner) Start() (int, error) {
|
||||
}
|
||||
continue
|
||||
}
|
||||
_, _, err1 = syscall.RawSyscall(syscall.SYS_DUP2, uintptr(fd[i]), uintptr(i), 0)
|
||||
_, _, err1 = syscall.RawSyscall(syscall.SYS_DUP3, uintptr(fd[i]), uintptr(i), 0)
|
||||
if err1 != 0 {
|
||||
goto childerror
|
||||
}
|
||||
|
||||
@ -27,7 +27,8 @@ func init() {
|
||||
|
||||
func getTrapContext(pid int) (*Context, error) {
|
||||
var regs syscall.PtraceRegs
|
||||
err := syscall.PtraceGetRegs(pid, ®s)
|
||||
//err := syscall.PtraceGetRegs(pid, ®s)
|
||||
err := ptraceGetRegSet(pid, ®s)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
@ -51,11 +51,9 @@ func (c *Context) skipSyscall() error {
|
||||
return syscall.PtraceSetRegs(c.Pid, &c.regs)
|
||||
}
|
||||
|
||||
func getIovecs(base *byte, l int) []unix.Iovec {
|
||||
return []unix.Iovec{
|
||||
unix.Iovec{
|
||||
Base: base,
|
||||
Len: uint64(l),
|
||||
},
|
||||
func getIovec(base *byte, l int) unix.Iovec {
|
||||
return unix.Iovec{
|
||||
Base: base,
|
||||
Len: uint64(l),
|
||||
}
|
||||
}
|
||||
|
||||
@ -47,15 +47,16 @@ func (c *Context) SetReturnValue(retval int) {
|
||||
}
|
||||
|
||||
func (c *Context) skipSyscall() error {
|
||||
c.regs.Uregs[7] = ^uint32(0) //-1
|
||||
return syscall.PtraceSetRegs(c.Pid, &c.regs)
|
||||
err := syscall.PtraceSetRegs(c.Pid, &c.regs)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return ptraceArmSetSyscall(c.Pid, -1)
|
||||
}
|
||||
|
||||
func getIovecs(base *byte, l int) []unix.Iovec {
|
||||
return []unix.Iovec{
|
||||
unix.Iovec{
|
||||
Base: base,
|
||||
Len: uint32(l),
|
||||
},
|
||||
func getIovec(base *byte, l int) unix.Iovec {
|
||||
return unix.Iovec{
|
||||
Base: base,
|
||||
Len: uint32(l),
|
||||
}
|
||||
}
|
||||
|
||||
60
tracer/context_arm64.go
Normal file
60
tracer/context_arm64.go
Normal file
@ -0,0 +1,60 @@
|
||||
package tracer
|
||||
|
||||
import (
|
||||
unix "golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
// SyscallNo get current syscall no
|
||||
func (c *Context) SyscallNo() uint {
|
||||
return uint(c.regs.Regs[8]) // R8
|
||||
}
|
||||
|
||||
// Arg0 gets the arg0 for the current syscall
|
||||
func (c *Context) Arg0() uint {
|
||||
return uint(c.regs.Regs[0]) //R0
|
||||
}
|
||||
|
||||
// Arg1 gets the arg1 for the current syscall
|
||||
func (c *Context) Arg1() uint {
|
||||
return uint(c.regs.Regs[1]) // R1
|
||||
}
|
||||
|
||||
// Arg2 gets the arg2 for the current syscall
|
||||
func (c *Context) Arg2() uint {
|
||||
return uint(c.regs.Regs[2]) // R2
|
||||
}
|
||||
|
||||
// Arg3 gets the arg3 for the current syscall
|
||||
func (c *Context) Arg3() uint {
|
||||
return uint(c.regs.Regs[3]) // R3
|
||||
}
|
||||
|
||||
// Arg4 gets the arg4 for the current syscall
|
||||
func (c *Context) Arg4() uint {
|
||||
return uint(c.regs.Regs[4]) // R4
|
||||
}
|
||||
|
||||
// Arg5 gets the arg5 for the current syscall
|
||||
func (c *Context) Arg5() uint {
|
||||
return uint(c.regs.Regs[5]) //R5
|
||||
}
|
||||
|
||||
// SetReturnValue set the return value if skip the syscall
|
||||
func (c *Context) SetReturnValue(retval int) {
|
||||
c.regs.Regs[0] = uint64(retval) // R0
|
||||
}
|
||||
|
||||
func (c *Context) skipSyscall() error {
|
||||
err := ptraceSetRegSet(c.Pid, &c.regs)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return ptraceArm64SetSyscall(c.Pid, -1)
|
||||
}
|
||||
|
||||
func getIovec(base *byte, l int) unix.Iovec {
|
||||
return unix.Iovec{
|
||||
Base: base,
|
||||
Len: uint64(l),
|
||||
}
|
||||
}
|
||||
@ -31,6 +31,10 @@ func vmRead(pid int, addr uintptr, buff []byte) (int, error) {
|
||||
return int(n), err
|
||||
}
|
||||
|
||||
func getIovecs(base *byte, l int) []unix.Iovec {
|
||||
return []unix.Iovec{getIovec(base, l)}
|
||||
}
|
||||
|
||||
func vmReadStr(pid int, addr uintptr, buff []byte) error {
|
||||
// Deal with unaligned addr
|
||||
n := 0
|
||||
|
||||
40
tracer/ptrace.go
Normal file
40
tracer/ptrace.go
Normal file
@ -0,0 +1,40 @@
|
||||
package tracer
|
||||
|
||||
import (
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
const (
|
||||
NT_PRSTATUS = 1
|
||||
NT_ARM_SYSTEM_CALL = 0x404
|
||||
|
||||
PTRACE_SET_SYSCALL = 23
|
||||
)
|
||||
|
||||
func ptrace(request int, pid int, addr uintptr, data uintptr) (err error) {
|
||||
_, _, e1 := syscall.Syscall6(syscall.SYS_PTRACE, uintptr(request), uintptr(pid), uintptr(addr), uintptr(data), 0, 0)
|
||||
if e1 != 0 {
|
||||
err = e1
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func ptraceGetRegSet(pid int, regs *syscall.PtraceRegs) error {
|
||||
iov := getIovec((*byte)(unsafe.Pointer(regs)), int(unsafe.Sizeof(*regs)))
|
||||
return ptrace(syscall.PTRACE_GETREGSET, pid, NT_PRSTATUS, uintptr(unsafe.Pointer(&iov)))
|
||||
}
|
||||
|
||||
func ptraceSetRegSet(pid int, regs *syscall.PtraceRegs) error {
|
||||
iov := getIovec((*byte)(unsafe.Pointer(regs)), int(unsafe.Sizeof(*regs)))
|
||||
return ptrace(syscall.PTRACE_SETREGSET, pid, NT_PRSTATUS, uintptr(unsafe.Pointer(&iov)))
|
||||
}
|
||||
|
||||
func ptraceArm64SetSyscall(pid int, syscallNo int) error {
|
||||
iov := getIovec((*byte)(unsafe.Pointer(&syscallNo)), int(unsafe.Sizeof(syscallNo)))
|
||||
return ptrace(syscall.PTRACE_SETREGSET, pid, NT_ARM_SYSTEM_CALL, uintptr(unsafe.Pointer(&iov)))
|
||||
}
|
||||
|
||||
func ptraceArmSetSyscall(pid int, syscallNo int) error {
|
||||
return ptrace(PTRACE_SET_SYSCALL, pid, 0, uintptr(syscallNo))
|
||||
}
|
||||
@ -203,14 +203,14 @@ func handleTrap(handler Handler, pid int) error {
|
||||
handler.Debug("seccomp traced")
|
||||
msg, err := unix.PtraceGetEventMsg(pid)
|
||||
if err != nil {
|
||||
handler.Debug(err)
|
||||
handler.Debug("PtraceGetEventMsg failed:", err)
|
||||
return err
|
||||
}
|
||||
switch int16(msg) {
|
||||
case MsgDisallow:
|
||||
ctx, err := getTrapContext(pid)
|
||||
if err != nil {
|
||||
handler.Debug(err)
|
||||
handler.Debug("getTrapContext failed:", err)
|
||||
return err
|
||||
}
|
||||
syscallName, err := handler.GetSyscallName(ctx)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user