legacy/vendor/common/netmgrd.te

# Copyright (c) 2019, The Linux Foundation. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above
#       copyright notice, this list of conditions and the following
#       disclaimer in the documentation and/or other materials provided
#       with the distribution.
#     * Neither the name of The Linux Foundation nor the names of its
#       contributors may be used to endorse or promote products derived
#       from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
# ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

type netmgrd, domain;
type netmgrd_exec, exec_type, vendor_file_type, file_type;
net_domain(netmgrd)
init_daemon_domain(netmgrd)

userdebug_or_eng(`
  domain_auto_trans(shell, netmgrd_exec, netmgrd)
  #domain_auto_trans(adbd, netmgrd_exec, netmgrd)
  diag_use(netmgrd)
  diag_use(netutils_wrapper)
')

#Allow netmgrd operations
allow netmgrd netmgrd:capability {
    net_raw
    net_admin
    sys_module
    fsetid
    setgid
    setuid
    setpcap
    kill
};

#Allow logging
allow netmgrd smem_log_device:chr_file rw_file_perms;
allow netmgrd netmgrd_data_file:file create_file_perms;
allow netmgrd netmgrd_data_file:dir w_dir_perms;

#Allow netutils usage
use_netutils(netmgrd)
allow netmgrd netutils_wrapper:process sigkill;

#Allow operations on different types of sockets
allow netmgrd netmgrd:rawip_socket { create getopt setopt write };
allow netmgrd netmgrd:netlink_xfrm_socket { create_socket_perms_no_ioctl nlmsg_write nlmsg_read };
allow netmgrd netmgrd:netlink_socket { write read create bind };
allow netmgrd netmgrd:socket { create };
allow netmgrd netmgrd:netlink_route_socket { setopt getattr write nlmsg_write };
allow netmgrd self:netlink_generic_socket create_socket_perms_no_ioctl;
allow netmgrd self:netlink_tcpdiag_socket { create_socket_perms_no_ioctl nlmsg_read nlmsg_write };
allow netmgrd self:qipcrtr_socket create_socket_perms_no_ioctl;

unix_socket_connect(netmgrd, cnd, cnd);

qmux_socket(netmgrd);

#Allow writing of ipv6 network properties
allow netmgrd { proc_net }:file rw_file_perms;

allow netmgrd self:socket create_socket_perms;

allow netmgrd sysfs_data:file r_file_perms;

#Acquire lock on /system/etc/xtables.lock
#Required till netutils wrappers are available
not_full_treble(`allow netmgrd system_file:file lock;')

#Allow netmgrd to create netmgrd socket
allow netmgrd netmgrd_socket:dir create_dir_perms;
allow netmgrd netmgrd_socket:sock_file create_file_perms;

allow netmgrd { wcnss_service_exec vendor_shell_exec vendor_toolbox_exec }:file rx_file_perms;

#Allow netmgrd to use wakelock
wakelock_use(netmgrd)

allowxperm netmgrd self:udp_socket ioctl priv_sock_ioctls;
allowxperm netmgrd self:udp_socket ioctl rmnet_sock_ioctls;
allowxperm netmgrd self:socket ioctl msm_sock_ipc_ioctls;

#Allow netmgrd to use netd HAL via HIDL
get_prop(netmgrd, hwservicemanager_prop)
hwbinder_use(netmgrd)
binder_call(netmgrd, netd)
allow netmgrd system_net_netd_hwservice:hwservice_manager find;

# Allow netmgrd to use shsusrd properties
set_prop(netmgrd, vendor_data_shsusr_prop)
set_prop(netmgrd, vendor_data_qmipriod_prop)

allow netmgrd sysfs_net:dir r_dir_perms;
allow netmgrd sysfs_net:file rw_file_perms;

#Allow diag logging
userdebug_or_eng(`
  r_dir_file(netmgrd, sysfs_diag)
')