platform_system_sepolicy/public/wificond.te
Jong Wook Kim 72030486c6 MAC Anonymization: wificond SIOCSIFHWADDR sepolicy
Add sepolicy rules to grant wificond permission to use SIOCSIFHWADDR
ioctl. This permission is needed to dynamically change MAC address of
the device when connecting to wifi networks.

Bug: 63905794
Test: Verified manually that wificond can dynamically change MAC
address.

Change-Id: If2c6b955b0b792f706d8438e8e2e018c0b4cfc31
2018-01-22 20:42:12 -08:00

35 lines
1.2 KiB
Text

# wificond
type wificond, domain;
type wificond_exec, exec_type, file_type;
binder_use(wificond)
binder_call(wificond, system_server)
add_service(wificond, wificond_service)
set_prop(wificond, wifi_prop)
set_prop(wificond, ctl_default_prop)
# create sockets to set interfaces up and down
allow wificond self:udp_socket create_socket_perms;
# setting interface state up/down is a privileged ioctl
allowxperm wificond self:udp_socket ioctl { SIOCSIFFLAGS SIOCSIFHWADDR };
allow wificond self:global_capability_class_set { net_admin net_raw };
# allow wificond to speak to nl80211 in the kernel
allow wificond self:netlink_socket create_socket_perms_no_ioctl;
# newer kernels (e.g. 4.4 but not 4.1) have a new class for sockets
allow wificond self:netlink_generic_socket create_socket_perms_no_ioctl;
r_dir_file(wificond, proc_net)
# wificond writes out configuration files for wpa_supplicant/hostapd.
# wificond also reads pid files out of this directory
allow wificond wifi_data_file:dir rw_dir_perms;
allow wificond wifi_data_file:file create_file_perms;
# allow wificond to check permission for dumping logs
allow wificond permission_service:service_manager find;
# dumpstate support
allow wificond dumpstate:fd use;
allow wificond dumpstate:fifo_file write;