'How to replace new system.img when using emulator
Actually, I want to customize AOSP's framework, and I've modified some source files in "frameworks/base/core/java/android/content".
After I run:
> make -j32
The output files' last-modified time under dir: "out/target/product/generic" is changed:
> ll
total 1317012
-rw-rw-r--. 1 dongzhen dongzhen 1 12-19 14:19 android-info.txt
drwxrwxr-x. 29 dongzhen dongzhen 4096 12-19 15:10 apex
drwxrwxr-x. 2 dongzhen dongzhen 4096 4-25 16:45 appcompat
drwxrwxr-x. 3 dongzhen dongzhen 26 4-21 21:47 build.avd
-rw-rw-r--. 1 dongzhen dongzhen 77 4-25 16:55 build_fingerprint.txt
-rw-rw-r--. 1 dongzhen dongzhen 62 4-25 16:55 build_thumbprint.txt
-rw-r--r--. 1 dongzhen dongzhen 69206016 4-21 21:47 cache.img
-rw-r--r--. 1 dongzhen dongzhen 196616 4-21 21:52 cache.img.qcow2
-rw-rw-r--. 1 dongzhen dongzhen 197054 12-19 14:17 clean_steps.mk
drwxrwxr-x. 2 dongzhen dongzhen 75 4-25 15:57 debug_ramdisk
drwxrwxr-x. 2 dongzhen dongzhen 8192 4-25 15:57 dexpreopt_config
-rw-rw-r--. 1 dongzhen dongzhen 110 4-21 21:53 emu-launch-params.txt
drwxrwxr-x. 2 dongzhen dongzhen 4096 4-25 15:59 fake_packages
drwxrwxr-x. 4 dongzhen dongzhen 41 12-19 14:27 gen
-rw-rw-r--. 1 dongzhen dongzhen 3297 4-21 21:52 hardware-qemu.ini
-rw-------. 1 dongzhen dongzhen 6 4-21 21:52 hardware-qemu.ini.lock
-rw-rw-r--. 1 dongzhen dongzhen 670682 4-25 17:02 installed-files.json
-rw-rw-r--. 1 dongzhen dongzhen 304 12-19 15:01 installed-files-ramdisk.json
-rw-rw-r--. 1 dongzhen dongzhen 81 12-19 15:01 installed-files-ramdisk.txt
-rw-rw-r--. 1 dongzhen dongzhen 2870 12-19 14:19 installed-files-root.json
-rw-rw-r--. 1 dongzhen dongzhen 619 12-19 14:19 installed-files-root.txt
-rw-rw-r--. 1 dongzhen dongzhen 252946 4-25 17:02 installed-files.txt
-rw-rw-r--. 1 dongzhen dongzhen 4452 12-19 14:19 misc_info.txt
-rw-rw-r--. 1 dongzhen dongzhen 26348119 12-19 14:19 module-info.json
-rw-rw-r--. 1 dongzhen dongzhen 28384573 12-19 14:19 module-info.json.rsp
-rw-rw-r--. 1 dongzhen dongzhen 0 4-21 21:52 multiinstance.lock
drwxrwxr-x. 14 dongzhen dongzhen 4096 4-25 17:03 obj
-rw-rw-r--. 1 dongzhen dongzhen 38 12-19 14:19 previous_build_config.mk
drwxrwxr-x. 10 dongzhen dongzhen 184 12-19 15:01 ramdisk
-rw-rw-r--. 1 dongzhen dongzhen 1324212 12-19 15:01 ramdisk.img
drwxrwxr-x. 24 dongzhen dongzhen 4096 12-19 14:19 root
-rw-------. 1 dongzhen dongzhen 6 4-21 21:52 snapshot.lock.lock
drwxrwxr-x. 5 dongzhen dongzhen 63 12-19 15:01 symbols
drwxrwxr-x. 14 dongzhen dongzhen 256 4-25 16:59 system
-rw-rw-r--. 1 dongzhen dongzhen 1285804032 4-25 17:03 system.img
drwxrwxr-x. 3 dongzhen dongzhen 31 12-19 15:26 testcases
-rw-rw-r--. 1 dongzhen dongzhen 4096 4-25 17:03 vbmeta.img
drwxrwxr-x. 4 dongzhen dongzhen 44 12-19 15:00 vendor
But after running emulator：
> ./aosp/prebuilts/android-emulator/linux-x86_64/emulator @test -system ./aosp/out/target/product/generic/system.img -kernel ./onlysdk/system-images/android-30/default/x86_64//kernel-ranchu -no-window -verbose
I use "adb shell" to check inner files:
> adb shell
generic_x86_64:/system/framework # ls -al
total 100508
drwxr-xr-x 5 root root 4096 2021-09-23 12:53 .
drwxr-xr-x 13 root root 4096 2021-09-23 12:53 ..
-rw-r--r-- 1 root root 543774 2021-09-23 12:45 am.jar
-rw-r--r-- 1 root root 12718 2021-09-23 12:43 android.hidl.base-V1.0-java.jar
-rw-r--r-- 1 root root 29738 2021-09-23 12:43 android.hidl.manager-V1.0-java.jar
-rw-r--r-- 1 root root 33134 2021-09-23 12:44 android.test.base.jar
-rw-r--r-- 1 root root 201786 2021-09-23 12:45 android.test.mock.jar
-rw-r--r-- 1 root root 106974 2021-09-23 12:45 android.test.runner.jar
-rw-r--r-- 1 root root 5682 2021-09-23 12:44 appwidget.jar
-rw-r--r-- 1 root root 31258 2021-09-23 12:44 bmgr.jar
-rw-r--r-- 1 root root 126 2021-09-23 12:53 boot-ext.vdex
-rw-r--r-- 1 root root 41 2021-09-23 12:53 boot-framework-atb-backward-compatibility.vdex
-rw-r--r-- 1 root root 37700 2021-09-23 12:53 boot-framework.vdex
-rw-r--r-- 1 root root 159 2021-09-23 12:53 boot-ims-common.vdex
-rw-r--r-- 1 root root 2801 2021-09-23 12:53 boot-telephony-common.vdex
-rw-r--r-- 1 root root 1109 2021-09-23 12:53 boot-voip-common.vdex
-rw-r--r-- 1 root root 7310 2021-09-23 12:44 bu.jar
-rw-r--r-- 1 root root 5334 2021-09-23 12:45 com.android.future.usb.accessory.jar
-rw-r--r-- 1 root root 20326 2021-09-23 12:45 com.android.location.provider.jar
-rw-r--r-- 1 root root 9250 2021-09-23 12:45 com.android.media.remotedisplay.jar
-rw-r--r-- 1 root root 2926 2021-09-23 12:45 com.android.mediadrm.signer.jar
-rw-r--r-- 1 root root 7970 2021-09-23 12:45 com.android.nfc_extras.jar
-rw-r--r-- 1 root root 19646 2021-09-23 12:45 content.jar
-rw-r--r-- 1 root root 9218 2021-09-23 12:45 dpm.jar
-rw-r--r-- 1 root root 44438 2021-09-23 12:52 ethernet-service.jar
-rw-r--r-- 1 root root 2220354 2021-09-23 12:52 ext.jar
-rw-r--r-- 1 root root 890 2021-09-23 12:52 framework-atb-backward-compatibility.jar
-rw-r--r-- 1 root root 48555173 2021-09-23 12:52 framework-res.apk
-rw-r--r-- 1 root root 29841085 2021-09-23 12:53 framework.jar
-rw-r--r-- 1 root root 20566 2021-09-23 12:45 hid.jar
-rw-r--r-- 1 root root 258858 2021-09-23 12:52 ims-common.jar
-rw-r--r-- 1 root root 15706 2021-09-23 12:45 incident-helper-cmd.jar
-rw-r--r-- 1 root root 13566 2021-09-23 12:45 input.jar
-rw-r--r-- 1 root root 54590 2021-09-23 12:45 javax.obex.jar
-rw-r--r-- 1 root root 9974 2021-09-23 12:45 lockagent.jar
-rw-r--r-- 1 root root 3714 2021-09-23 12:45 locksettings.jar
-rw-r--r-- 1 root root 115465 2021-09-23 12:53 monkey.jar
drwxr-xr-x 4 root root 4096 2021-09-23 12:53 oat
-rw-r--r-- 1 root root 487310 2021-09-23 12:45 org.apache.http.legacy.jar
-rw-r--r-- 1 root root 1362 2021-09-23 12:53 org.apache.http.legacy.jar.prof
-rw-r--r-- 1 root root 12438 2021-09-23 12:45 requestsync.jar
-rw-r--r-- 1 root root 106554 2021-09-23 12:52 service-blobstore.jar
-rw-r--r-- 1 root root 427038 2021-09-23 12:52 service-jobscheduler.jar
-rw-r--r-- 1 root root 14712067 2021-09-23 12:53 services.jar
-rw-r--r-- 1 root root 4708 2021-09-23 12:53 services.jar.bprof
-rw-r--r-- 1 root root 30033 2021-09-23 12:53 services.jar.prof
-rw-r--r-- 1 root root 10926 2021-09-23 12:45 sm.jar
-rw-r--r-- 1 root root 11950 2021-09-23 12:45 svc.jar
-rw-r--r-- 1 root root 15274 2021-09-23 12:45 telecom.jar
-rw-r--r-- 1 root root 3485446 2021-09-23 12:52 telephony-common.jar
-rw-r--r-- 1 root root 366758 2021-09-23 12:45 uiautomator.jar
-rw-r--r-- 1 root root 819682 2021-09-23 12:52 voip-common.jar
-rw-r--r-- 1 root root 4426 2021-09-23 12:45 vr.jar
drwxr-xr-x 2 root root 4096 2021-09-23 12:53 x86
drwxr-xr-x 2 root root 4096 2021-09-23 12:53 x86_64
The above last-modified time really confuse me. I'd like to know the reason why.
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
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