sepolicy: Add permission for hang_guard

Allow sepolicy rules for hang_guard to
send signal to process, write into kmsg,
look through proc and write into sysrq.

Change-Id: Ia707097a5e4867377138df7948f50441f560bdd6

generic/vendor/test/file_contexts

@@ -77,6 +77,9 @@
 /(vendor|system/vendor)/bin/test-fake-ap                        u:object_r:vendor_location_exec:s0
 /(vendor|system/vendor)/bin/test-fdal                           u:object_r:vendor_location_exec:s0
 
+#### Context for hang_guard
+/(vendor|system/vendor)/bin/hang_guard        u:object_r:vendor_hang_guard_exec:s0
+
 #For debug script
 /(vendor|system/vendor)/bin/init\.qti\.kernel\.debug\.sh        u:object_r:vendor_qti_init_shell_exec:s0
 

generic/vendor/test/hang_guard.te

@@ -0,0 +1,51 @@
+# Copyright (c) 2020, The Linux Foundation. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+#       copyright notice, this list of conditions and the following
+#       disclaimer in the documentation and/or other materials provided
+#       with the distribution.
+#     * Neither the name of The Linux Foundation nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+type vendor_hang_guard, domain, mlstrustedsubject;
+type vendor_hang_guard_exec, exec_type, vendor_file_type, file_type;
+
+init_daemon_domain(vendor_hang_guard)
+
+userdebug_or_eng(`
+  allow vendor_hang_guard self:global_capability_class_set kill;
+  allow vendor_hang_guard kmsg_device:chr_file w_file_perms;
+  allow vendor_hang_guard domain:process { signal sigstop sigkill };
+
+  # sh
+  allow vendor_hang_guard { vendor_shell_exec vendor_toolbox_exec }:file rx_file_perms;
+
+  # look through /proc
+  allow vendor_hang_guard domain:dir r_dir_perms;
+  allow vendor_hang_guard domain:file r_file_perms;
+  allow vendor_hang_guard domain:lnk_file read;
+
+  # write into sysrq
+  allow vendor_hang_guard proc_sysrq:file w_file_perms;
+
+  # reboot
+  set_prop(vendor_hang_guard, powerctl_prop)
+')

legacy/vendor/test/file_contexts

@@ -93,6 +93,9 @@
 /(vendor|system/vendor)/bin/loc_api_app                         u:object_r:location_exec:s0
 /(vendor|system/vendor)/bin/test_loc_api_client                 u:object_r:location_exec:s0
 
+#Context for hang_guard
+/(vendor|system/vendor)/bin/hang_guard        u:object_r:hang_guard_exec:s0
+
 /(vendor|system/vendor)/bin/sns.*               u:object_r:sensors_test_exec:s0
 #for testscripts support
 /(vendor|system/vendor)/bin/init\.qcom\.vendor\.testscripts\.sh u:object_r:vendor-qti-testscripts_exec:s0

legacy/vendor/test/hang_guard.te

@@ -0,0 +1,51 @@
+# Copyright (c) 2020, The Linux Foundation. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+#       copyright notice, this list of conditions and the following
+#       disclaimer in the documentation and/or other materials provided
+#       with the distribution.
+#     * Neither the name of The Linux Foundation nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+type hang_guard, domain, mlstrustedsubject;
+type hang_guard_exec, exec_type, vendor_file_type, file_type;
+
+init_daemon_domain(hang_guard)
+
+userdebug_or_eng(`
+  allow hang_guard self:global_capability_class_set kill;
+  allow hang_guard kmsg_device:chr_file w_file_perms;
+  allow hang_guard domain:process { signal sigstop sigkill };
+
+  # sh
+  # allow hang_guard { shell_exec toolbox_exec }:file rx_file_perms;
+
+  # look through /proc
+  allow hang_guard domain:dir r_dir_perms;
+  allow hang_guard domain:file r_file_perms;
+  allow hang_guard domain:lnk_file read;
+
+  # write into sysrq
+  allow hang_guard proc_sysrq:file w_file_perms;
+
+  # reboot
+  set_prop(hang_guard, powerctl_prop)
+')