[General Questions and Answers] curiouslyg:
I have access to what appears to be a Samsung J7 2016 with stock ROM.

I've noticed that the root of my filesystem contains various fstab and init files relating to qemu, ranchu, and goldfish. While some things are commented outz others are not.

Is this normal? Is there any simple way to absolutely verify this is not some sort of emulated environment? I saw some stuff from dexterlabs but I'm not setup with an environment to build from source for Android right now.

If this is normal, can anybody explain why a ROM destined for mass hardware deployment would be cluttered with useless files like this?

I admit that I am new here and this might be a stupid question, but I did search and did not easily find any good answers.

u0_a157@j7eltemtr:/ $ ls -la

drwxr-xr-x root root 2017-10-05 15:10 .system

drwxr-xr-x root root 2017-10-05 15:10 acct

drwxrwx--- system cache 2017-01-01 00:02 cache

dr-x------ root root 2017-10-05 15:10 config

drwxrwx--x radio system 2016-06-08 17:03 cpefs

lrwxrwxrwx root root 2017-10-05 15:10 d -> /sys/kernel/debug

drwxrwx--x system system 2017-10-05 15:11 data

-rw-r--r-- root root 681 1969-12-31 16:00 default.prop

drwxr-xr-x root root 2017-10-05 15:10 dev

drwxrwx--x radio system 2017-09-23 21:48 efs

lrwxrwxrwx root root 2017-10-05 15:10 etc -> /system/etc

lrwxrwxrwx root root 2017-10-05 15:10 factory -> /data/app

-rw-r--r-- root root 134186 1969-12-31 16:00 file_contexts

-rw-r----- root root 935 1969-12-31 16:00 fstab.goldfish

-rw-r----- root root 831 1969-12-31 16:00 fstab.ranchu

-rw-r----- root root 1231 1969-12-31 16:00 fstab.samsungexynos7580

-rwxr-x--- root root 813940 1969-12-31 16:00 init

-rwxr-x--- root root 1383 1969-12-31 16:00 init.baseband.rc

-rwxr-x--- root root 424 1969-12-31 16:00 init.carrier.rc

-rwxr-x--- root root 3221 1969-12-31 16:00 init.container.rc

-rwxr-x--- root root 1355 1969-12-31 16:00 init.environ.rc

-rwxr-x--- root root 2551 1969-12-31 16:00 init.goldfish.rc

-rwxr-x--- root root 1411 1969-12-31 16:00 init.ranchu.rc

-rwxr-x--- root root 60959 1969-12-31 16:00 init.rc

-rwxr-x--- root root 173 1969-12-31 16:00 init.rilcarrier.rc

-rwxr-x--- root root 1056 1969-12-31 16:00 init.rilchip.rc

-rwxr-x--- root root 1010 1969-12-31 16:00 init.rilcommon.rc

-rwxr-x--- root root 440 1969-12-31 16:00 init.rilepdg.rc

-rwxr-x--- root root 22837 1969-12-31 16:00 init.samsungexynos7580.rc

-rwxr-x--- root root 13316 1969-12-31 16:00 init.samsungexynos7580.usb.rc

-rwxr-x--- root root 1921 1969-12-31 16:00 init.trace.rc

-rwxr-x--- root root 9283 1969-12-31 16:00 init.usb.configfs.rc

-rwxr-x--- root root 6484 1969-12-31 16:00 init.usb.rc

-rwxr-x--- root root 3306 1969-12-31 16:00 init.wifi.rc

-rwxr-x--- root root 342 1969-12-31 16:00 init.zygote32.rc

drwxrwxr-x root system 2017-10-05 15:10 knox_data

drwxr-xr-x root root 1969-12-31 16:00 lib

drwxr-xr-x root system 2017-10-05 15:10 mnt

drwxr-xr-x root root 1969-12-31 16:00 oem

drwxr-xr-x system system 2017-10-05 15:10 persdata

-rw-r--r-- root root 2088 1969-12-31 16:00 postrecovery.do

drwxrwx--x system system 2017-10-05 15:10 preload

dr-xr-xr-x root root 1969-12-31 16:00 proc

-rw-r--r-- root root 22354 1969-12-31 16:00 property_contexts

-rw-r--r-- root root 1509 1969-12-31 16:00 publiccert.pem

drwx------ root root 2017-06-05 22:43 root

drwxr-x--- root root 1969-12-31 16:00 sbin

lrwxrwxrwx root root 2017-10-05 15:10 sdcard -> /storage/self/primary

-rw-r--r-- root root 11653 1969-12-31 16:00 seapp_contexts

-rw-r--r-- root root 776858 1969-12-31 16:00 sepolicy

-rw-r--r-- root root 487 1969-12-31 16:00 sepolicy_version

-rw-r--r-- root root 37997 1969-12-31 16:00 service_contexts

drwxr-xr-x root root 2017-10-05 15:11 storage

dr-xr-xr-x root root 2017-10-05 15:10 sys

drwxr-xr-x root root 2017-01-01 00:00 system

-rw-r--r-- root root 323 1969-12-31 16:00 ueventd.goldfish.rc

-rw-r--r-- root root 272 1969-12-31 16:00 ueventd.ranchu.rc

-rw-r--r-- root root 5298 1969-12-31 16:00 ueventd.rc

-rw-r--r-- root root 7114 1969-12-31 16:00 ueventd.samsungexynos7580.rc

lrwxrwxrwx root root 2017-10-05 15:10 vendor -> /system/vendor

u0_a157@j7eltemtr:/ $