adb permission denied to push files to subdirectry

Question

Why would I get permission denied using adb to copy a directory to a subdirectory on my phone, when I could copy to its parent directory and both have the same permission?



I tried this from my PC to my Nexus 5 running 6.0.1 (Oct 5):



adb push Dir /sdcard/Dir/Subdir


It failed with 



Permission denied


This has worked before, with no changes I'm aware of.



I launched adb shell and ran 



ls -l


to get permissions for /sdcard (storage/emulated/0), /sdcard/Dir and /sdcard/Dir/Subdir:



drwxrwx--x root sdcard_rw


I then:



cd /sdcard/Dir/Subdir

mkdir XYZ


Got 



mdkdir: XYZ: Permission Denied


Tried:



su

mkdir XYZ


Again, permission denied



I then tried another push



adb push XYZ /sdcard/Dir


This worked and copied all of the files.



Why would it work to /sdcard/Dir and not to /sdcard/Dir/Subdir, when both have the same permissions? Why would permission be denied for root?


— foosion | Sources

Answer

As it appears in this comment, the file permissions and access control to SubDir differs from what ideally should be.



The problem:



# ls -l on /data/media/0/Dir

dwrxrwxr-x root root


The user group should have been media_rw instead of root.



The solution is to change to appropriate group or make the directory writable by others.





chmod 777 /data/media/0/Dir/SubDir

 # making SubDir writable by others

chgrp media_rw /data/media/0/Dir/SubDir  # Alternatively, changing group from root to media_rw


Note: you may need to install Busybox or Toybox to have and use chmod and/or chgrp.


— Firelord | Sources

Q & A

Battery drains when phone is turned off
How to boot if the graphics chip is damaged and the screen is permanently blank?
How can I see (and change) what sensitive notifications are?
How can I view the mobile data usage for each application for a given day?
Please help with Stock/Custom Rom for Bluboo s8a
How do I know if an app on my phone makes use of App Bundles?
Where is the baseband firmware stored and how does Android interact with it?
stop google maps from spinning the map
How can I copy the email address of the recipient when I compose a new email in Microsoft Outlook for Android?
TWRP: Could not mount /data (even after format data / change file system)
Restrict contacts from knowing I am on WhatsApp
"There was a problem communicating with Google servers, try again later" error
Found a not-so-locked Moto G5S Plus - need help to unlock & return it
How to avoid WiFi disconnection if Google cannot be pinged?
How to get 2nd IMEI number using adb?
How to synchronize my smartphone to my Google account?
Microphone gone from my keyboard?
Low disk storage Space, 47G is used by Bixby Vision
Disabling the clipboard history on Samsung devices
Sony Xperia Z3 Compact Back and Home buttons not working

Topics

2D Engines   3D Engines   9-Patch   Action Bars   Activities   ADB   Advertisements   Analytics   Animations   ANR   AOP   API   APK   APT   Architecture   Audio   Autocomplete   Background Processing   Backward Compatibility   Badges   Bar Codes   Benchmarking   Bitmaps   Bluetooth   Blur Effects   Bread Crumbs   BRMS   Browser Extensions   Build Systems   Bundles   Buttons   Caching   Camera   Canvas   Cards   Carousels   Changelog   Checkboxes   Cloud Storages   Color Analysis   Color Pickers   Colors   Comet/Push   Compass Sensors   Conferences   Content Providers   Continuous Integration   Crash Reports   Credit Cards   Credits   CSV   Curl/Flip   Data Binding   Data Generators   Data Structures   Database   Database Browsers   Date &   Debugging   Decompilers   Deep Links   Dependency Injections   Design   Design Patterns   Dex   Dialogs   Distributed Computing   Distribution Platforms   Download Managers   Drawables   Emoji   Emulators   EPUB   Equalizers &   Event Buses   Exception Handling   Face Recognition   Feedback &   File System   File/Directory   Fingerprint   Floating Action   Fonts   Forms   Fragments   FRP   FSM   Functional Programming   Gamepads   Games   Geocaching   Gestures   GIF   Glow Pad   Gradle Plugins   Graphics   Grid Views   Highlighting   HTML   HTTP Mocking   Icons   IDE   IDE Plugins   Image Croppers   Image Loaders   Image Pickers   Image Processing   Image Views   Instrumentation   Intents   Job Schedulers   JSON   Keyboard   Kotlin   Layouts   Library Demos   List View   List Views   Localization   Location   Lock Patterns   Logcat   Logging   Mails   Maps   Markdown   Mathematics   Maven Plugins   MBaaS   Media   Menus   Messaging   MIME   Mobile Web   Native Image   Navigation   NDK   Networking   NFC   NoSQL   Number Pickers   OAuth   Object Mocking   OCR Engines   OpenGL   ORM   Other Pickers   Parallax List   Parcelables   Particle Systems   Password Inputs   PDF   Permissions   Physics Engines   Platforms   Plugin Frameworks   Preferences   Progress Indicators   ProGuard   Properties   Protocol Buffer   Pull To   Purchases   Push/Pull   QR Codes   Quick Return   Radio Buttons   Range Bars   Ratings   Recycler Views   Resources   REST   Ripple Effects   RSS   Screenshots   Scripting   Scroll Views   SDK   Search Inputs   Security   Sensors   Services   Showcase Views   Signatures   Sliding Panels   Snackbars   SOAP   Social Networks   Spannable   Spinners   Splash Screens   SSH   Static Analysis   Status Bars   Styling   SVG   System   Tags   Task Managers   TDD &   Template Engines   Testing   Testing Tools   Text Formatting   Text Views   Text Watchers   Text-to   Toasts   Toolkits For   Tools   Tooltips   Trainings   TV   Twitter   Updaters   USB   User Stories   Utils   Validation   Video   View Adapters   View Pagers   Views   Watch Face   Wearable Data   Wearables   Weather   Web Tools   Web Views   WebRTC   WebSockets   Wheel Widgets   Wi-Fi   Widgets   Windows   Wizards   XML   XMPP   YAML   ZIP Codes