shinano-common: rootdir: Introduce a service to start suntrold

* suntrold is a oneshot service and spawns a subprocess which is required
  for the rear camera. Since [1] oneshot services' process groups are
  killed which prevents suntrold from working correctly.

* To work this issue around create a non-oneshot service, suntrold.sh, which
  never exits, so that suntrold can be started from it and it's subprocesses
  will not be killed.

[1] https://github.com/aosp-mirror/platform_system_core/commit/d89ed132a0ee1a57046286b83e64a35b71774952

[Idea of this is from LuK1337]

Co-authored-by: LuK1337 <priv.luk@gmail.com>
Change-Id: Id9c4f56648168f0ffe19b2bb31c591750afe6f97

8 files changed, 27 insertions, 9 deletions

diff --git a/rootdir/Android.mk b/rootdir/Android.mk
index 92b8981..216a8da 100644
--- a/rootdir/Android.mk
+++ b/rootdir/Android.mk
@@ -66,6 +66,14 @@ LOCAL_MODULE_PATH  := $(TARGET_OUT_VENDOR_EXECUTABLES)
 include $(BUILD_PREBUILT)
 
 include $(CLEAR_VARS)
+LOCAL_MODULE       := suntrold.sh
+LOCAL_MODULE_TAGS  := optional
+LOCAL_MODULE_CLASS := EXECUTABLES
+LOCAL_SRC_FILES    := bin/suntrold.sh
+LOCAL_MODULE_PATH  := $(TARGET_OUT_VENDOR_EXECUTABLES)
+include $(BUILD_PREBUILT)
+
+include $(CLEAR_VARS)
 LOCAL_MODULE       := tad_static
 LOCAL_MODULE_TAGS  := optional
 LOCAL_MODULE_CLASS := EXECUTABLES
diff --git a/rootdir/bin/suntrold.sh b/rootdir/bin/suntrold.sh
new file mode 100644
index 0000000..170b738
--- /dev/null
+++ b/rootdir/bin/suntrold.sh
@@ -0,0 +1,7 @@
+#!/vendor/bin/sh
+
+# Start suntrold
+/vendor/bin/suntrold
+
+# Sleep infinite to prevent that suntrold's subprocess gets killed
+tail -f /dev/null
diff --git a/rootdir/etc/init.camera.rc b/rootdir/etc/init.camera.rc
index ce77064..068c838 100644
--- a/rootdir/etc/init.camera.rc
+++ b/rootdir/etc/init.camera.rc
@@ -101,6 +101,11 @@ service credmgrd /vendor/bin/credmgrd
     socket credmgr stream 0660 system camera
     disabled
 
+service suntrold-sh /vendor/bin/suntrold.sh
+    class main
+    user system
+    group system camera
+
 # Secure Config Transfer service
 service sct_service /vendor/bin/sct_service
     user root
diff --git a/rootdir/etc/init.qcom.rc b/rootdir/etc/init.qcom.rc
index 7329ce0..010b98b 100644
--- a/rootdir/etc/init.qcom.rc
+++ b/rootdir/etc/init.qcom.rc
@@ -385,13 +385,6 @@ service ril-daemon1 /vendor/bin/hw/rild -c 2
 on property:persist.radio.multisim.config=dsds
     start ril-daemon1
 
-# Start suntrold
-service suntrold /vendor/bin/suntrold
-    user system
-    group system camera
-    oneshot
-    class main
-
 # Modem Log QMI service
 service mlog_qmi_service /vendor/bin/mlog_qmi_service
     class core
diff --git a/sepolicy/credmgrd.te b/sepolicy/credmgrd.te
index 2b61930..38edd9f 100644
--- a/sepolicy/credmgrd.te
+++ b/sepolicy/credmgrd.te
@@ -18,4 +18,7 @@ allow credmgrd system_data_root_file:dir { create_dir_perms relabelfrom };
 allow credmgrd credmgrd_data_file:dir { create_dir_perms relabelto };
 allow credmgrd credmgrd_data_file:file create_file_perms;
 
+# Allow suntrold.sh to start suntrold
+allow credmgrd credmgrd_exec:file rx_file_perms;
+
 set_prop(credmgrd, credmgrd_prop)
diff --git a/sepolicy/dontaudit.te b/sepolicy/dontaudit.te
index 2ddef4b..faf73b3 100644
--- a/sepolicy/dontaudit.te
+++ b/sepolicy/dontaudit.te
@@ -1 +1 @@
-dontaudit domain credmgrd_exec:file *;
+dontaudit { domain -credmgrd } credmgrd_exec:file *;
diff --git a/sepolicy/file_contexts b/sepolicy/file_contexts
index d95a492..d953062 100644
--- a/sepolicy/file_contexts
+++ b/sepolicy/file_contexts
@@ -18,6 +18,7 @@
 /(vendor|system/vendor)/bin/credmgrd                      u:object_r:credmgrd_exec:s0
 /(vendor|system/vendor)/bin/credmgrfirstboot\.sh          u:object_r:credmgrd_exec:s0
 /(vendor|system/vendor)/bin/suntrold                      u:object_r:credmgrd_exec:s0
+/(vendor|system/vendor)/bin/suntrold.sh                   u:object_r:credmgrd_exec:s0
 
 # Lineage hardware
 /(vendor|system/vendor)/bin/hw/vendor\.lineage\.touch@1\.0-service\.shinano u:object_r:hal_lineage_touch_default_exec:s0
diff --git a/shinano.mk b/shinano.mk
index 204be18..9cf9980 100644
--- a/shinano.mk
+++ b/shinano.mk
@@ -137,7 +137,8 @@ PRODUCT_PACKAGES += \
     ueventd.qcom.rc
 
 PRODUCT_PACKAGES += \
-    credmgrfirstboot.sh
+    credmgrfirstboot.sh \
+    suntrold.sh
 
 # Include BCM Wifi
 $(call inherit-product-if-exists, hardware/broadcom/wlan/bcmdhd/config/config-bcm.mk)