Questions tagged [file-permissions]

Use this tag if your issue is with permissions in the file system (files & directories). For app permissions, use the 'permissions' tag instead.

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6 views

Access specified package directory [migrated]

so im having problem with accessing root app data directory my example dir: /data/app/com.android.chrome-jAB96abq4RXcFrKebL0BUQ== i want to get into /data/app/com.android.chrome without extension name ...
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Is this possible in Android that a file/folder can have multiple owners and group?

So in my scenario, I am trying to assign multiple groups, the user to a file in /dev/. So I have created a custom AID in config.fs and the corresponding [path], mode, caps parameter also configured. ...
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28 views

How to properly propagate unmounting of USB OTG storage to all mount namespaces (rooted device)

This is a (spiritual) follow-up to the previously answered question How to bind mount a folder inside /sdcard with correct permissions?. Device: Samsung Galaxy Tab S2 8.0 ROM: LineageOS 16.0 (Android ...
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1answer
74 views

How much of the Android filesystem is visible over MTP?

When I plug in my Android device to my computer it gets connected as a media device under MTP mode. I can browse a bit of the folders on my device via my computer. I'm wondering how much of the device ...
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How to make a text file read-only in a non-rooted device? [duplicate]

I wanted to make a file read-only (440)in internal storage but it shows "failed",as it seemingly requires root permission but I can't unlock bootloader as of now so is there any means we can do the ...
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1answer
45 views

Why preinstalled apps have more privileges than third party apps?

This question is based on an observation of Android's powerful security features, In my old Android Lollipop third party apps had read access (but no write access) to external SD card, but my Android ...
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198 views

E: failed to format /cache: permission denied

I am using a Blackview A60 Pro and I am stuck inside of the turn on screen. A couple of days ago I dropped it in a bucket of water and I have had it in rice since. I turned it on and it won't boot, I ...
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23 views

Securely storing keyfiles with authentication and alike

I am using Keepass as my password manager. I am using a keyfile for securing access to my database. However when I want to do the same on my android phone I have to store the keyfile in my phone ...
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1answer
564 views

Why root cannot access “.android_secure” directory on external SD card?

I have an Android 9 tablet, rooted by way of Magisk. It has an external SD card mounted as sdfat on /mnt/media_rw/1234-5678 which is mounted on four other mount points, all as type sdcardfs, with some ...
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1answer
2k views

How to access /storage/emulated/10 (multi-users env) in adb shell on Android 9+ without root access?

I have two Android system users configured. $ pm list users Users: UserInfo{0:Owner:13} running UserInfo{10:security space:13} running UserInfo{999:XSpace:800010} running When the mobile ...
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123 views

Why `diag_mdlog` not able to write on `/sdcard` if it is fired from an Android App that has write permissions?

I am getting a weird behavior with diag_mdlog executable. I am executing it from my Android app as su -c /vendor/bin/diag_mdlog -o /sdcard/abc -f /sdcard/Test.cfg The issue is: if the android ...
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82 views

File showing on device not showing on computer

I'm developing an Android application where some data is exported in a json file written in the Download folder. My objective is to get this file from a computer (when the device is USB connected). ...
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1answer
128 views

Can a System-App read the data of other apps on Android 9?

I want to know if a system-app is able to read the data of other apps (the data stored in /data/data.) on Android 9. Thanks!
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1answer
1k views

How to edit root files in /sys (Permission Denied)?

I have been trying to change root files in my phone through an app I am developing. The phone I have is a Moto G6, fully rooted. I'm using terminal emulators to run commands on my phone. I've tried "...
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1answer
629 views

Termux files permission

I have an issue with files permission in termux. For instance I installed c4droid and copied the termux include and lib folders content in the c4droid folder where the headers are being looked for at ...
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1answer
446 views

Can android user become a super user in android?

Is it possible to change the rights of normal user in android to super user? My requirement is to run the super user code(I want to read a file data from system directory) in a device that has ...
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98 views

Permission denied on android directories?

Forgive my newness... I've installed Android Studio/Android SDK in Windows 7, enabled debugging on my Droid Turbo 2 with Android 7.0, system version 25.216.2.kinzie_verizon.verizon.en.US, and ...
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2answers
1k views

Unable to modify file permissions.xml, get error Read-only file system

I have a rooted Galaxy S5 SM-G900V, lineage_klte, ARMv7 Processor rev 1 (v71), Kernel: 3.4.113-lineageos #1 SMP, Oreo 8.1 that a friend asked me to modify. I need to modify the platform.xml file to ...
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1answer
2k views

Why is the '/storage/emulated/' directory inaccessible?

The /storage directory and the /storage/emulated/0 directory is accessible in a non-rooted Android OS. So, why is the /storage/emulated directory not accessible in a non-rooted Android OS ?
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1answer
10k views

Is it possible to change file permissions on Android's internal storage?

How can I change file permission of a file on Android without rooting? I actually want to prevent some files from deletion. Note: I am asking of changing the file permissions of user-created files in ...
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1answer
2k views

SimpleSSHD - create reusable user/password?

I have downloaded SimpleSSHD (aka Dropbear) to access my Android via SSH. I am able to do so with the one-time password, but I'm trying to write a Python script that can access the phone. Is there a ...
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1answer
47 views

Why do I have to get permission to save to my own phone?

I am the owner of a new Samsung Galaxy J7 (J700T). When I try to delete files with no data on them on my internal, external, or SD card, the phone tells me I am denied. I want the files I've created....
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2answers
3k views

How to change the modified date of a file without root?

How do I change the modified date of a file, specifically PNGs, on Android without root? Total Commander failed to do it with a permission error Access Denied.
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1answer
271 views

Exclude an Android/data folder from cache cleanup

I have a game which downloads all of it's data and contents in a folder in Android/data . The size is over 400MB and device is not rooted. Every time I do a cache and junk cleanup, All files of this ...
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1answer
1k views

Why do write attempts to /system/priv-app cause /system to switch to read-only?

I'm trying to write files to the /system/priv-app directory. I boot into recovery (TWRP) and run adb shell. ~ # mount /system ~ # mount rootfs on / type rootfs (rw,seclabel) ... /dev/block/mmcblkXXXX ...
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5k views

Package installation in Termux

I'm reading this guide that describes how to install the statistical language R on Termux. My installation journey is briefly outlined below. I need to determine why nothing happens at Step #2 ...
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0answers
417 views

SD card write permission issues after restoring from backup to an identical phone model

I've been using LineageOS 14.1 on a rooted unlocked Samsung S7 (G930F) for a long time. My phone started dying, so I rebooted to TWRP and managed to take a full backup to the SD card before it died. ...
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1answer
5k views

Can't create new folders on SD card?

I'm using Lenovo A7000 with Lollipop and I can't create new folders on SD Card. Attempt to create folder on SD card always end with error, however, android phone is not going to tell me what error it ...
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1answer
222 views

How to make root-created files accessible to normal users?

My device is running Android 8.0, rooted using Magisk as the su manager. I log into it using SimpleSSHD. I'm trying to do some actions which require root access, and in the process I'm creating some ...
2
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0answers
66 views

Data recover/transfer from a disk image

Situation. I have a .img disk image file obtained from a .vmdk file via a virtualbox conversion, the latter being created by an Android 4.4.2 emulator. I'm trying to recover some app data and transfer ...
4
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1answer
2k views

How to remount sdcardfs to allow setting file permisions / ownerships?

I have a rooted OnePlus One running LineageOS 15.1 (Oreo 8.1). I am trying to adjust some file permissions/ownerships on the emulated sdcard partition. The partition seems to be mounted as an ...
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300 views

Running commands operating on files always results in permission denied errors

When I try executing commands operating on files, they always fail. I can't check permissions on the terminal because I'd have to run a command that operates on a file (directory) in order to do so. ...
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1k views

Play store apps cannot write to external SD Card in Android Oreo

My Galaxy S7 edge recently updated to Oreo. Now play store apps no longer have rights to write to my external SD card. I have followed app instructions about how to open a system folder chooser dialog,...
2
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1answer
257 views

Unable to copy files from one /data/data/ directory to another (Root)

I'm trying to copy one file from /data/data/com.application1/myfile to /data/data/com.application2/myfile The file arrives with owner and group set to the app that it came from. I then changed the ...
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165 views

What file system for Asus Zenfone 2 on CentOS 6.9?

I'm trying to mount my Android Asus Zenfone 2 on CentOS 6.9. I created a folder in /mnt/android as the mounting point. I edited the /etc/fstab file in the following way because somewhere in some ...
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0answers
1k views

SSHDroid cannot write sd card

The title says it all. Running android 7.1 not rooted device, I am running sshDroid on android device, ssh into it from my laptop. When I ssh into the device and check the permissions for the SD ...
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1answer
822 views

Create shared folder on sdcard

Is there any way to create a directory on an external sdcard that has read/write access for multiple apps. For example I want to us synththing or rsync under termux be able to sync this directory to ...
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1answer
74 views

Portable storage: do I have to re-grant app permissions when switching microSD cards?

I'm using a Moto Z2 Force running Android 7.1.1 with a 128 GB microSD card installed. I wanna upgrade to a 400 GB card. Would I have to re-grant microSD access app permissions for the new card, or do ...
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1answer
2k views

Unknown file type containing a virus

I will try to keep the story as short as possible just so you can have a more clear view of what is my concern. While, I was browsing the Internet on my phone using the Chrome Browser App, I got a ...
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1answer
392 views

Docx document is read-only in LibreOffice

I created a docx file in LibreOffice on my computer running Debian 9.1 with KDE and copied it to my Android phone. On the phone I try to open the file with the LibreOffice app. However I can't edit ...
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1answer
242 views

host file in android

I have a rooted device. I would like to protect my hosts file from being deleted, maybe with a password or something like that. Is this possible?
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1answer
1k views

Cannot paste files into System/Media

I am looking to change my boot audio but cannot change it due it not copying from my computer to my phone but I can copy from the device to my computer. I have the latest version of Android Studio / ...
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0answers
349 views

Why can't my phone write to external USB drive?

I bought a new 3TB USB3.0 external harddisk for storing and transferring large files (mainly hd movies from my camera) between my Android phone (Galaxy S7 edge) and my PC (Win10). Using windows, I... ...
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2answers
1k views

How to use an ext4 formatted sd card as external storage with working app permissions?

I'm using LineageOS14.1 (Android 7.1.2) on a Moto G 3rd gen I'm using a 64GB sd and my phone technically doesn't support it, it worked fine until I put more stuff on it and then it started to ...
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1answer
2k views

wpa_supplicant.conf permission

So I'm facing this problem for a while now . What happens is that my phone reboots automatically sometimes and after the reboot I can't use my WiFi . The button is stuck at off: So after doing some ...
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2answers
2k views

Copying files from PC to “external” SD card

I've got AirDroid and SSHDroid installed on a ZTE Axon 7 running 7.1.1. The phone has a micro SD card in it, and it can access (read from) that card successfully. What I can't do is copy files onto it....
2
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1answer
766 views

System Set Permissions Accidentally, and is Corrupt

My phone's system folder at /system was corrupt. I accidentally set its permissions to rw-r--r--. Then, I reboot my phone, and nothing is working. Here's what I mean: 1st reboot: power off; 2nd ...
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4k views

Permission denied reading /dev/block/mmcblk0p4 as root

I will list my main objective first, dependencies after. If there is a better path to my goal, please show me the way.... I want to install Lollipop on my HTC One S. (Or a later version, if one is ...
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2answers
17k views

What file systems can I use for a 128GB sdcard on Android 7.1, used as portable storage

I can't find an answer to this on StackExchange. I have a phone running beta LineageOS 14.1 (Android 7.1), and a 128GB SDXC card which I want to use as portable/shared storage between devices. I ...
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2answers
99 views

What is actually happening on the rom when I rooting android device? What is happen on rooting? [duplicate]

What is actually happening on rooting? Is it change file system, or modify file or add new files or add new configirations....etc? I know the meaning of rooting but I want to know how it dowing.