init: Add vendor-specific initialization hooks.

David Ng · mracar07 · commit be2ad4adf0c3 · 2019-10-14T16:15:58.000Z
Allow optional vendor-specific initializations
within init.  This can be used for runtime
initialization setup that init rc scripts do
not support.

Change-Id: I7623a0d59b18f9ec8e3623958e2f7ccd72b877bf
Signed-off-by: Josh Fox (XlxFoXxlX) &lt;joshfox87@gmail.com&gt;
Signed-off-by: mracar07 &lt;umutcan@umutcanacar.me&gt;
diff --git a/init/Android.bp b/init/Android.bp
@@ -136,6 +136,7 @@ cc_library_static {
         "ueventd.cpp",
         "ueventd_parser.cpp",
         "util.cpp",
+        "vendor_init.cpp",
     ],
     whole_static_libs: ["libcap", "com.android.sysprop.apex"],
     header_libs: ["bootimg_headers"],
@@ -150,6 +151,14 @@ cc_library_static {
             exclude_shared_libs: ["libbinder", "libutils"],
         },
     },
+
+    product_variables: {
+        rr: {
+            target_init_vendor_lib: {
+                whole_static_libs: ["%s"],
+            },
+        },
+    },
 }
 
 cc_binary {
diff --git a/init/NOTICE b/init/NOTICE
@@ -188,3 +188,29 @@
 
    END OF TERMS AND CONDITIONS
 
+Copyright (c) 2013, 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.
diff --git a/init/property_service.cpp b/init/property_service.cpp
@@ -64,6 +64,7 @@
 #include "selinux.h"
 #include "subcontext.h"
 #include "util.h"
+#include "vendor_init.h"
 
 using namespace std::literals;
 
@@ -912,6 +913,9 @@ void property_load_boot_defaults(bool load_debug_prop) {
         }
     }
 
+    // Update with vendor-specific property runtime overrides
+    vendor_load_properties();
+
     property_initialize_ro_product_props();
     property_derive_build_fingerprint();
 
diff --git a/init/vendor_init.cpp b/init/vendor_init.cpp
@@ -0,0 +1,37 @@
+/*
+Copyright (c) 2013, 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.
+ */
+
+#include "vendor_init.h"
+
+/* init vendor override stubs */
+
+__attribute__ ((weak))
+void vendor_load_properties()
+{
+}
diff --git a/init/vendor_init.h b/init/vendor_init.h
@@ -0,0 +1,33 @@
+/*
+Copyright (c) 2013, 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.
+ */
+
+#ifndef __INIT_VENDOR__H__
+#define __INIT_VENDOR__H__
+extern void vendor_load_properties(void);
+#endif /* __INIT_VENDOR__H__ */

Original file line number	Diff line number	Diff line change
`@@ -64,6 +64,7 @@`
`64`	`64`	`#include "selinux.h"`
`65`	`65`	`#include "subcontext.h"`
`66`	`66`	`#include "util.h"`
	`67`	`+#include "vendor_init.h"`
`67`	`68`
`68`	`69`	`using namespace std::literals;`
`69`	`70`
`@@ -912,6 +913,9 @@ void property_load_boot_defaults(bool load_debug_prop) {`
`912`	`913`	`}`
`913`	`914`	`}`
`914`	`915`
	`916`	`+ // Update with vendor-specific property runtime overrides`
	`917`	`+ vendor_load_properties();`
	`918`	`+`
`915`	`919`	`property_initialize_ro_product_props();`
`916`	`920`	`property_derive_build_fingerprint();`
`917`	`921`