# Copyright 2023 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# Rules for jail_warden, which is union of the rules for the devices it creates,
# rules for creating devices, and rules for jailing devices.

# Copyright 2019 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# This is an allow list of syscalls for most of crosvm devices.
#
# Note that some device policy files don't depend on this policy file
# because of some conflicts such as gpu_common.policy.
# If you want to modify policies for all the devices, please modify
# not only this file but also other *_common.policy files.

brk: 1
clock_gettime: 1
# ANDROID: modified to 1 because of duplicate error with jail_warden
clone: 1
clone3: 1
close: 1
dup2: 1
dup: 1
epoll_create1: 1
epoll_ctl: 1
epoll_pwait: 1
epoll_wait: 1
eventfd2: 1
exit: 1
exit_group: 1
ftruncate: 1
futex: 1
getcwd: 1
getpid: 1
gettid: 1
gettimeofday: 1
io_uring_setup: 1
io_uring_register: 1
io_uring_enter: 1
kill: 1
lseek: 1
# ANDROID: modified to 1 because of duplicate error with jail_warden
madvise: 1
membarrier: 1
memfd_create: 1
# ANDROID: added PROT_WRITE because of duplicate error with jail_warden
mmap: arg2 in ~PROT_EXEC || arg2 in ~PROT_WRITE
# ANDROID: added PROT_WRITE because of duplicate error with jail_warden
mprotect: arg2 in ~PROT_EXEC || arg2 in ~PROT_WRITE
mremap: 1
munmap: 1
nanosleep: 1
clock_nanosleep: 1
pipe2: 1
poll: 1
ppoll: 1
read: 1
readlink: 1
readlinkat: 1
readv: 1
recvfrom: 1
recvmsg: 1
restart_syscall: 1
rseq: 1
rt_sigaction: 1
rt_sigprocmask: 1
rt_sigreturn: 1
sched_getaffinity: 1
sched_yield: 1
sendmsg: 1
sendto: 1
set_robust_list: 1
sigaltstack: 1
# arg2 == SIGABRT -- ANDROID(b/270404912): modified to 1 - duplicate error.
tgkill: 1
write: 1
writev: 1
fcntl: 1
uname: 1

# ANDROID(b/271625758): disabled to fix duplicate syscall error.
# ## Rules for vmm-swap
# userfaultfd: 1
# # 0xc018aa3f == UFFDIO_API, 0xaa00 == USERFAULTFD_IOC_NEW
# ioctl: arg1 == 0xc018aa3f || arg1 == 0xaa00

capget: 1
capset: 1
chdir: 1
chroot: 1
# ANDROID: merged with entry in common_device.policy
# clone: 1
fchdir: 1
getdents64: 1
#ioctl: FIONBIO, SIOCGIFMTU, SIOCSIFFLAGS, SIOCGIFFLAGS, TCGETS, TUNSETIFF
# TUNSETVNETHDRSZ, TUNSETOFFLOAD, UFFDIO_API, USERFAULTFD_IOC_NEW
ioctl: arg1 == 0x5421 || \
arg1 == 0x8921 || \
arg1 == 0x8914 || \
arg1 == 0x8913 || \
arg1 == 0x5401 || \
arg1 == 0x400454ca || \
arg1 == 0x400454d8 || \
arg1 == 0x400454d0 || \
arg1 == 0xc018aa3f || \
arg1 == 0xaa00
# ANDROID: merged with entry in common_device.policy
# madvise: 1
# ANDROID: merged with entry in common_device.policy
# mmap: arg2 in ~PROT_EXEC || arg2 in ~PROT_WRITE
mount: 1
# ANDROID: merged with entry in common_device.policy
# mprotect: arg2 in ~PROT_EXEC || arg2 in ~PROT_WRITE
newfstatat: 1
openat: 1
pivot_root: 1
prctl: arg0 == PR_SET_NO_NEW_PRIVS || \
arg0 == PR_SET_SECUREBITS || \
arg0 == PR_SET_SECCOMP || \
arg0 == PR_CAPBSET_DROP || \
arg0 == PR_SET_NAME
prlimit64: 1
setsid: 1
setsockopt: 1
socket: arg0 == AF_INET || arg0 == AF_UNIX
socketpair: 1
statx: 1
# ANDROID: already exists in common_device.policy
# tgkill: 1
umount2: 1 # Create jail
unshare: 1