android_system_sepolicy/dhcp.te
Nick Kralevich c29b2fc423 drop dhcp auditallow
toolbox_exec is executed by dhcpcd-run-hooks.

Addresses the following auditallow log spam:

  avc: granted { read open } for comm="dhcpcd-run-hook" path="/system/bin/toybox" dev="dm-0" ino=650 scontext=u:r:dhcp:s0 tcontext=u:object_r:toolbox_exec:s0 tclass=file
  avc: granted { read } for comm="setprop" name="toybox" dev="dm-0" ino=650 scontext=u:r:dhcp:s0 tcontext=u:object_r:toolbox_exec:s0 tclass=file
  avc: granted { execute } for comm="dhcpcd-run-hook" name="toybox" dev="dm-0" ino=650 scontext=u:r:dhcp:s0 tcontext=u:object_r:toolbox_exec:s0 tclass=file
  avc: granted { execute_no_trans } for comm="dhcpcd-run-hook" path="/system/bin/toybox" dev="dm-0" ino=650 scontext=u:r:dhcp:s0 tcontext=u:object_r:toolbox_exec:s0 tclass=file
  avc: granted { read execute } for comm="setprop" path="/system/bin/toybox" dev="dm-0" ino=639 scontext=u:r:dhcp:s0 tcontext=u:object_r:toolbox_exec:s0 tclass=file

Change-Id: Ib83c291961a5573397830032a67a2f6861ae2e71
2016-01-13 16:37:20 -08:00

33 lines
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type dhcp, domain, domain_deprecated;
type dhcp_exec, exec_type, file_type;
type dhcp_data_file, file_type, data_file_type;
init_daemon_domain(dhcp)
net_domain(dhcp)
allow dhcp cgroup:dir { create write add_name };
allow dhcp self:capability { setgid setuid net_admin net_raw net_bind_service };
allow dhcp self:packet_socket create_socket_perms;
allow dhcp self:netlink_route_socket nlmsg_write;
allow dhcp shell_exec:file rx_file_perms;
allow dhcp system_file:file rx_file_perms;
# dhcpcd runs dhcpcd-hooks/*, which runs getprop / setprop (toolbox_exec)
allow dhcp toolbox_exec:file rx_file_perms;
# For /proc/sys/net/ipv4/conf/*/promote_secondaries
allow dhcp proc_net:file write;
set_prop(dhcp, dhcp_prop)
set_prop(dhcp, pan_result_prop)
type_transition dhcp system_data_file:{ dir file } dhcp_data_file;
allow dhcp dhcp_data_file:dir create_dir_perms;
allow dhcp dhcp_data_file:file create_file_perms;
# PAN connections
allow dhcp netd:fd use;
allow dhcp netd:fifo_file rw_file_perms;
allow dhcp netd:{ dgram_socket_class_set unix_stream_socket } { read write };
allow dhcp netd:{ netlink_kobject_uevent_socket netlink_route_socket netlink_nflog_socket } { read write };