# Copyright 2018 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# This file lists out the seccomp policy.

# The following are allowed syscalls for runtime_probe skeleton + DBus
write: 1
getuid: 1
geteuid: 1
getgid: 1
getegid: 1
epoll_create1: 1
pipe2: 1
epoll_ctl: 1
gettid: 1
rt_sigprocmask: 1
signalfd4: 1
fstat: 1
newfstatat: 1
clock_getres: 1
futex: 1
getresuid: 1
getresgid: 1
fcntl: 1
getsockname: 1
poll: 1
read: 1
readlink: 1
openat: 1
set_robust_list: 1
munmap: 1
sendto: 1
sendmsg: 1
recvmsg: 1
epoll_wait: 1
close: 1
exit: 1
exit_group: 1
restart_syscall: 1
rt_sigreturn: 1
stat: 1
access: 1
faccessat: 1
faccessat2: 1
mmap: arg2 in ~PROT_EXEC || arg2 in ~PROT_WRITE
mprotect: arg2 == PROT_READ || arg2 == PROT_NONE
arch_prctl: 1
rt_sigaction: 1
set_tid_address: 1
prlimit64: 1

# The following are syscalls enabled by -L in minijail.
# Document those syscalls here because runtime_probe daemon doesn't use -L by default.
socket: arg0 == AF_UNIX && arg1 == SOCK_DGRAM|SOCK_CLOEXEC && arg2 == 0 || arg0 == AF_UNIX && arg1 == SOCK_STREAM|SOCK_CLOEXEC && arg2 == 0
lseek: 1
connect: 1

# The following are syscalls specifically required for runtime_probe
# main daemon.
uname: 1
lstat: 1
brk: 1
select: 1
pselect6: 1

# For brillo::kLogToStderrIfTty. isatty(0) calls ioctl(0, TCGETS, *).
ioctl: arg0 == 0 && arg1 == TCGETS
fstatfs: 1