Trying to disable fingerprint reader keyboard emulation

Change-Id: I6509e1e0da2169b7db957f8f86a056b142e0be55

device.mk

@@ -677,3 +677,7 @@ PRODUCT_COPY_FILES += \
     $(LOCAL_PATH)/ubuntu/display.conf:system/halium/etc/ubuntu-touch-session.d/android.conf \
     $(LOCAL_PATH)/ubuntu/config-default.xml:system/halium/usr/share/powerd/device_configs/config-default.xml
 
+ PRODUCT_PACKAGES += \
+	miniafservice \
+	uinput-fpc-key-disable
+

init.hardware.rc

@@ -890,3 +890,13 @@ on property:sys.retaildemo.enabled=1
     setprop persist.vendor.charge.stop.level 35
     setprop persist.vendor.charge.start.level 30
 
+service miniaf /system/bin/miniafservice
+    class main
+    user system
+    group audio
+
+service uinput-fpc-key-disable /system/bin/uinput-fpc-key-disable
+    class main
+    user root
+    group root
+

uinput-fpc-key-disable/Android.mk

@@ -0,0 +1,15 @@
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := main.cpp
+#LOCAL_SHARED_LIBRARIES := libutils \
+#                          libbinder \
+#                          libcutils \
+#                          libaudioutils \
+#                          libmedia \
+#                          libhardware
+LOCAL_MODULE_TAGS := optional
+LOCAL_CPPFLAGS := -Wno-unused-parameter
+LOCAL_MODULE := uinput-fpc-key-disable
+include $(BUILD_EXECUTABLE)

uinput-fpc-key-disable/main.cpp

@@ -0,0 +1,59 @@
+#include <fcntl.h>
+#include <iostream>
+#include <linux/input.h>
+#include <linux/limits.h>
+#include <limits>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+int main(int argc, char** argv)
+{
+    static const char* targetName = "uinput-fpc";
+    int fd = -1;
+    int ioctlResult;
+    char name[256];
+
+    for (int i = 1; i < 9; i++) {
+        char eventPath[PATH_MAX];
+
+        memset(name, 0, sizeof(name));
+        sprintf(eventPath, "/dev/input/event%d", i);
+        std::cout << "Trying " << eventPath << std::endl;
+
+        fd = open(eventPath, O_RDONLY);
+        ioctlResult = ioctl(fd, EVIOCGNAME(sizeof(name)), name);
+        std::cout << "Device name is '" << name << "'" << std::endl;
+
+        if (ioctlResult < 0) {
+            close(fd);
+            fd = -1;
+            continue;
+        }
+
+        if (strcmp(targetName, name) == 0)
+            break;
+    }
+
+    if (fd < 0) {
+        std::cerr << "Failed to find uinput-fpc device" << std::endl;
+        return 1;
+    }
+
+    std::cout << "Grabbing " << targetName << std::endl;
+    ioctlResult = ioctl(fd, EVIOCGRAB, 1);
+
+    if (ioctlResult < 0) {
+        std::cerr << "Failed to grab fpc input device" << std::endl;
+        return 2;
+    }
+
+    while (true) {
+        sleep(std::numeric_limits<unsigned int>::max());
+    }
+
+    close(fd);
+    return 0;
+}