423fd19d91
Define new netlink socket security classes introduced by upstream kernel commit
6c6d2e9bde1c1c87a7ead806f8f5e2181d41a652 ("selinux: update netlink socket
classes"). This was merged in Linux 4.2 and is therefore only required
for Android kernels based on 4.2 or newer (e.g. the android-4.4 branch
of the kernel/common tree).
Add the new socket classes to socket_class_set.
Add an initial set of allow rules although further refinement
will likely be necessary. Any allow rule previously written
on :netlink_socket may need to be rewritten or duplicated for
one or more of the more specific classes. For now, we retain
the existing :netlink_socket rules for compatibility on older kernels.
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
(cherry picked from commit 01d95c23ab)
Change-Id: Ic00a0d474730cda91ba3bc387e0cc14482f82114
49 lines
1.3 KiB
Plaintext
49 lines
1.3 KiB
Plaintext
# 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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init_daemon_domain(wpa)
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net_domain(wpa)
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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;
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allow wpa self:netlink_generic_socket create_socket_perms;
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allow wpa self:packet_socket create_socket_perms;
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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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binder_use(wpa)
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# Create a socket for receiving info from wpa
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type_transition wpa wifi_data_file:dir wpa_socket "sockets";
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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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