1# network manager
2type netd, domain;
3type netd_exec, exec_type, file_type;
4
5init_daemon_domain(netd)
6net_domain(netd)
7
8allow netd self:capability { net_admin net_raw kill };
9# Note: fsetid is deliberately not included above. fsetid checks are
10# triggered by chmod on a directory or file owned by a group other
11# than one of the groups assigned to the current process to see if
12# the setgid bit should be cleared, regardless of whether the setgid
13# bit was even set.  We do not appear to truly need this capability
14# for netd to operate.  Uncomment the dontaudit rule below after
15# sufficient testing of the fsetid removal.
16# dontaudit netd self:capability fsetid;
17
18allow netd self:netlink_kobject_uevent_socket create_socket_perms;
19allow netd self:netlink_route_socket nlmsg_write;
20allow netd self:netlink_nflog_socket create_socket_perms;
21allow netd shell_exec:file rx_file_perms;
22allow netd system_file:file x_file_perms;
23allow netd devpts:chr_file rw_file_perms;
24
25# For /proc/sys/net/ipv[46]/route/flush.
26allow netd proc_net:file write;
27
28# For /sys/modules/bcmdhd/parameters/firmware_path
29# XXX Split into its own type.
30allow netd sysfs:file write;
31
32# Set dhcp lease for PAN connection
33unix_socket_connect(netd, property, init)
34allow netd dhcp_prop:property_service set;
35allow netd system_prop:property_service set;
36auditallow netd system_prop:property_service set;
37
38# Connect to PAN
39domain_auto_trans(netd, dhcp_exec, dhcp)
40allow netd dhcp:process signal;
41
42# Needed to update /data/misc/wifi/hostapd.conf
43# TODO: See what we can do to reduce the need for
44# these capabilities
45allow netd self:capability { dac_override chown fowner };
46allow netd wifi_data_file:file create_file_perms;
47allow netd wifi_data_file:dir rw_dir_perms;
48
49# Needed to update /data/misc/net/rt_tables
50allow netd net_data_file:file create_file_perms;
51allow netd net_data_file:dir rw_dir_perms;
52
53# Allow netd to spawn hostapd in it's own domain
54domain_auto_trans(netd, hostapd_exec, hostapd)
55allow netd hostapd:process signal;
56
57# Allow netd to spawn dnsmasq in it's own domain
58domain_auto_trans(netd, dnsmasq_exec, dnsmasq)
59allow netd dnsmasq:process signal;
60
61# Allow netd to start clatd in its own domain
62domain_auto_trans(netd, clatd_exec, clatd)
63allow netd clatd:process signal;
64
65allow netd ctl_mdnsd_prop:property_service set;
66
67# Allow netd to operate on sockets that are passed to it.
68allow netd netdomain:{tcp_socket udp_socket rawip_socket dccp_socket tun_socket} {read write getattr setattr getopt setopt};
69allow netd netdomain:fd use;
70
71###
72### Neverallow rules
73###
74### netd should NEVER do any of this
75
76# Block device access.
77neverallow netd dev_type:blk_file { read write };
78
79# ptrace any other app
80neverallow netd { domain }:process ptrace;
81
82# Write to /system.
83neverallow netd system_file:dir_file_class_set write;
84
85# Write to files in /data/data or system files on /data
86neverallow netd { app_data_file system_data_file }:dir_file_class_set write;
87