# 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.

# These seccomp rules specify only the syscalls used by the Goodix FW updater
# tool.  The updater gdixupdate should only be used through minijail with
# these rules.

# TODO: replace "ioctl: 1" with arg1 list when seccomp support bytecode filter.
# Because we encode buffer size in the arg1, so it's hard to list all the arg
# values use in the updater code, you can fix it in the future.
# All the values of arg1 are generate by macros HIDIOCSFEATURE(size) and
# HIDIOCGFEATURE(size) defined at linux/hidraw.h.
ioctl: 1
mmap: arg2 == 0x1 || arg2 == 0x3 || arg2 == 0x5
mprotect: arg2 == 0x0 || arg2 == 0x1
open: 1
openat: 1
fstat: 1
newfstatat: 1
close: 1
read: 1
brk: 1
restart_syscall: 1
exit: 1
rt_sigreturn: 1
write: 1
exit_group: 1
arch_prctl: arg0 == 0x1002
access: 1
munmap: 1
getpid: 1
nanosleep: 1
clock_nanosleep: 1
fstatfs: 1