6caeac7b47
Modify permissions for wpa_supplicant to use hwbinder (for HIDL),
instead of binder.
Denials:
01-15 14:31:58.573 541 541 W wpa_supplicant: type=1400
audit(0.0:10): avc: denied { call } for scontext=u:r:wpa:s0
tcontext=u:r:hwservicemanager:s0 tclass=binder permissive=0
01-15 14:31:58.573 541 541 W wpa_supplicant: type=1400
audit(0.0:11): avc: denied { call } for scontext=u:r:wpa:s0
tcontext=u:r:hwservicemanager:s0 tclass=binder permissive=0
BUG: 31365276
Test: Compiled and ensured that the selinux denials are no longer
present in logs.
Change-Id: Ifa4630edea6ec5a916b3940f9a03ef9dc6fc9af2
53 lines
1.6 KiB
Text
53 lines
1.6 KiB
Text
# wpa - wpa supplicant or equivalent
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type wpa, domain, domain_deprecated;
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type wpa_exec, exec_type, file_type;
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net_domain(wpa)
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# in addition to ioctls whitelisted for all domains, grant wpa priv_sock_ioctls.
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allowxperm wpa self:udp_socket ioctl priv_sock_ioctls;
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r_dir_file(wpa, sysfs_type)
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r_dir_file(wpa, proc_net)
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allow wpa kernel:system module_request;
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allow wpa self:capability { setuid net_admin setgid net_raw };
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allow wpa cgroup:dir create_dir_perms;
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allow wpa self:netlink_route_socket nlmsg_write;
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allow wpa self:netlink_socket create_socket_perms_no_ioctl;
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allow wpa self:netlink_generic_socket create_socket_perms_no_ioctl;
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allow wpa self:packet_socket create_socket_perms;
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allowxperm wpa self:packet_socket ioctl { unpriv_sock_ioctls priv_sock_ioctls unpriv_tty_ioctls };
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allow wpa wifi_data_file:dir create_dir_perms;
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allow wpa wifi_data_file:file create_file_perms;
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unix_socket_send(wpa, system_wpa, system_server)
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# HIDL interface exposed by WPA.
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hwbinder_use(wpa)
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binder_call(wpa, wificond)
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# Create a socket for receiving info from wpa
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allow wpa wpa_socket:dir create_dir_perms;
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allow wpa wpa_socket:sock_file create_file_perms;
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use_keystore(wpa)
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# WPA (wifi) has a restricted set of permissions from the default.
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allow wpa keystore:keystore_key {
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get
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sign
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verify
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};
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# Allow wpa_cli to work. wpa_cli creates a socket in
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# /data/misc/wifi/sockets which wpa supplicant communicates with.
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userdebug_or_eng(`
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unix_socket_send(wpa, wpa, su)
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')
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###
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### neverallow rules
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###
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# wpa_supplicant should not trust any data from sdcards
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neverallow wpa sdcard_type:dir ~getattr;
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neverallow wpa sdcard_type:file *;
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