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// Copyright 2018 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Test binary used to test that seccomp filters are properly constructed and
// indeed kill the process on violation.
package main
import (
"flag"
"fmt"
"os"
"syscall"
"gvisor.googlesource.com/gvisor/pkg/seccomp"
)
func main() {
dieFlag := flag.Bool("die", false, "trips over the filter if true")
flag.Parse()
syscalls := []uintptr{
syscall.SYS_ACCEPT,
syscall.SYS_ARCH_PRCTL,
syscall.SYS_BIND,
syscall.SYS_BRK,
syscall.SYS_CLOCK_GETTIME,
syscall.SYS_CLONE,
syscall.SYS_CLOSE,
syscall.SYS_DUP,
syscall.SYS_DUP2,
syscall.SYS_EPOLL_CREATE1,
syscall.SYS_EPOLL_CTL,
syscall.SYS_EPOLL_WAIT,
syscall.SYS_EXIT,
syscall.SYS_EXIT_GROUP,
syscall.SYS_FALLOCATE,
syscall.SYS_FCHMOD,
syscall.SYS_FCNTL,
syscall.SYS_FSTAT,
syscall.SYS_FSYNC,
syscall.SYS_FTRUNCATE,
syscall.SYS_FUTEX,
syscall.SYS_GETDENTS64,
syscall.SYS_GETPEERNAME,
syscall.SYS_GETPID,
syscall.SYS_GETSOCKNAME,
syscall.SYS_GETSOCKOPT,
syscall.SYS_GETTID,
syscall.SYS_GETTIMEOFDAY,
syscall.SYS_LISTEN,
syscall.SYS_LSEEK,
syscall.SYS_MADVISE,
syscall.SYS_MINCORE,
syscall.SYS_MMAP,
syscall.SYS_MPROTECT,
syscall.SYS_MUNLOCK,
syscall.SYS_MUNMAP,
syscall.SYS_NANOSLEEP,
syscall.SYS_NEWFSTATAT,
syscall.SYS_OPEN,
syscall.SYS_POLL,
syscall.SYS_PREAD64,
syscall.SYS_PSELECT6,
syscall.SYS_PWRITE64,
syscall.SYS_READ,
syscall.SYS_READLINKAT,
syscall.SYS_READV,
syscall.SYS_RECVMSG,
syscall.SYS_RENAMEAT,
syscall.SYS_RESTART_SYSCALL,
syscall.SYS_RT_SIGACTION,
syscall.SYS_RT_SIGPROCMASK,
syscall.SYS_RT_SIGRETURN,
syscall.SYS_SCHED_YIELD,
syscall.SYS_SENDMSG,
syscall.SYS_SETITIMER,
syscall.SYS_SET_ROBUST_LIST,
syscall.SYS_SETSOCKOPT,
syscall.SYS_SHUTDOWN,
syscall.SYS_SIGALTSTACK,
syscall.SYS_SOCKET,
syscall.SYS_SYNC_FILE_RANGE,
syscall.SYS_TGKILL,
syscall.SYS_UTIMENSAT,
syscall.SYS_WRITE,
syscall.SYS_WRITEV,
}
die := *dieFlag
if !die {
syscalls = append(syscalls, syscall.SYS_OPENAT)
}
if err := seccomp.Install(syscalls, false); err != nil {
fmt.Printf("Failed to install seccomp: %v", err)
os.Exit(1)
}
fmt.Printf("Filters installed\n")
syscall.RawSyscall(syscall.SYS_OPENAT, 0, 0, 0)
fmt.Printf("Syscall was allowed!!!\n")
}
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