android_system_sepolicy/wpa.te
Jeff Vander Stoep d22987b4da Create attribute for moving perms out of domain
Motivation: Domain is overly permissive. Start removing permissions
from domain and assign them to the domain_deprecated attribute.
Domain_deprecated and domain can initially be assigned to all
domains. The goal is to not assign domain_deprecated to new domains
and to start removing domain_deprecated where it is not required or
reassigning the appropriate permissions to the inheriting domain
when necessary.

Bug: 25433265
Change-Id: I8b11cb137df7bdd382629c98d916a73fe276413c
2015-11-03 23:11:11 +00:00

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# wpa - wpa supplicant or equivalent
type wpa, domain, domain_deprecated;
type wpa_exec, exec_type, file_type;
init_daemon_domain(wpa)
net_domain(wpa)
allow wpa kernel:system module_request;
allow wpa self:capability { setuid net_admin setgid net_raw };
allow wpa cgroup:dir create_dir_perms;
allow wpa self:netlink_route_socket nlmsg_write;
allow wpa self:netlink_socket create_socket_perms;
allow wpa self:packet_socket create_socket_perms;
allow wpa wifi_data_file:dir create_dir_perms;
allow wpa wifi_data_file:file create_file_perms;
unix_socket_send(wpa, system_wpa, system_server)
binder_use(wpa)
# Create a socket for receiving info from wpa
type_transition wpa wifi_data_file:dir wpa_socket "sockets";
allow wpa wpa_socket:dir create_dir_perms;
allow wpa wpa_socket:sock_file create_file_perms;
use_keystore(wpa)
# WPA (wifi) has a restricted set of permissions from the default.
allow wpa keystore:keystore_key {
get
sign
verify
};
# Allow wpa_cli to work. wpa_cli creates a socket in
# /data/misc/wifi/sockets which wpa supplicant communicates with.
userdebug_or_eng(`
unix_socket_send(wpa, wpa, su)
')
###
### neverallow rules
###
# wpa_supplicant should not trust any data from sdcards
neverallow wpa sdcard_type:dir ~getattr;
neverallow wpa sdcard_type:file *;