Changes of premissions/ownership for a file revert back to root automatically
I have this character device file called /dev/kvm, that Android Studio needs to run it's emulator with. Android studio also needs permissions for it and by default this kvm file is with root ownership (as shown from ls -la):
crw-rw---- 1 root kvm 10, 232 мар 6 18:25 kvm
I try changing it's ownership to my default sudo user, with sudo chown myusrname /dev/kvm and it works, the emulator starts, no problems.
HOWEVER after some time the file reverts back to root ownership automatically. Seems pretty strange. The same goes for changing rwx permissions on that file (using sudo chmod 755 /dev/kvm). After the computer reboots, or after the file has been used once it just reverts back to it's original permissions and root ownership.
Do you have any idea what is causing this and how to fix it?
chmod chown
asked yesterday
Vlad SkurtolovVlad Skurtolov
1296
add a comment |
I have this character device file called /dev/kvm, that Android Studio needs to run it's emulator with. Android studio also needs permissions for it and by default this kvm file is with root ownership (as shown from ls -la):
crw-rw---- 1 root kvm 10, 232 мар 6 18:25 kvm
I try changing it's ownership to my default sudo user, with sudo chown myusrname /dev/kvm and it works, the emulator starts, no problems.
HOWEVER after some time the file reverts back to root ownership automatically. Seems pretty strange. The same goes for changing rwx permissions on that file (using sudo chmod 755 /dev/kvm). After the computer reboots, or after the file has been used once it just reverts back to it's original permissions and root ownership.
Do you have any idea what is causing this and how to fix it?
chmod chown
asked yesterday
Vlad SkurtolovVlad Skurtolov
1296
Device nodes are dynamically created byudev- although it is possible to write udev rules to assign specific ownership/permissions to particular devices, it would be better IMHO to assign appropriate group membership to the Android Studio user. See for example Android Studio: /dev/kvm device permission denied
– steeldriver
yesterday
Related: Ubuntu 14 Android Studio 3 xrdp /dev/kvm permission denied
– steeldriver
yesterday
Looks like you should add the user to thekvm-group instead of changing the ownership of the character device file.
– mook765
yesterday
add a comment |
I have this character device file called /dev/kvm, that Android Studio needs to run it's emulator with. Android studio also needs permissions for it and by default this kvm file is with root ownership (as shown from ls -la):
crw-rw---- 1 root kvm 10, 232 мар 6 18:25 kvm
I try changing it's ownership to my default sudo user, with sudo chown myusrname /dev/kvm and it works, the emulator starts, no problems.
HOWEVER after some time the file reverts back to root ownership automatically. Seems pretty strange. The same goes for changing rwx permissions on that file (using sudo chmod 755 /dev/kvm). After the computer reboots, or after the file has been used once it just reverts back to it's original permissions and root ownership.
Do you have any idea what is causing this and how to fix it?
chmod chown
asked yesterday
Vlad SkurtolovVlad Skurtolov
1296
I have this character device file called /dev/kvm, that Android Studio needs to run it's emulator with. Android studio also needs permissions for it and by default this kvm file is with root ownership (as shown from ls -la):
crw-rw---- 1 root kvm 10, 232 мар 6 18:25 kvm
I try changing it's ownership to my default sudo user, with sudo chown myusrname /dev/kvm and it works, the emulator starts, no problems.
HOWEVER after some time the file reverts back to root ownership automatically. Seems pretty strange. The same goes for changing rwx permissions on that file (using sudo chmod 755 /dev/kvm). After the computer reboots, or after the file has been used once it just reverts back to it's original permissions and root ownership.
Do you have any idea what is causing this and how to fix it?
chmod chown
chmod chown
asked yesterday
Vlad SkurtolovVlad Skurtolov
1296
asked yesterday
Vlad SkurtolovVlad Skurtolov
1296
edited yesterday
Vlad Skurtolov
asked yesterday
Vlad SkurtolovVlad Skurtolov
1296
asked yesterday
Vlad SkurtolovVlad Skurtolov
1296
asked yesterday
Vlad SkurtolovVlad Skurtolov
1296
1296
Device nodes are dynamically created byudev- although it is possible to write udev rules to assign specific ownership/permissions to particular devices, it would be better IMHO to assign appropriate group membership to the Android Studio user. See for example Android Studio: /dev/kvm device permission denied
– steeldriver
yesterday
Related: Ubuntu 14 Android Studio 3 xrdp /dev/kvm permission denied
– steeldriver
yesterday
Looks like you should add the user to thekvm-group instead of changing the ownership of the character device file.
– mook765
yesterday
add a comment |
Device nodes are dynamically created byudev- although it is possible to write udev rules to assign specific ownership/permissions to particular devices, it would be better IMHO to assign appropriate group membership to the Android Studio user. See for example Android Studio: /dev/kvm device permission denied
– steeldriver
yesterday
Related: Ubuntu 14 Android Studio 3 xrdp /dev/kvm permission denied
– steeldriver
yesterday
Looks like you should add the user to thekvm-group instead of changing the ownership of the character device file.
– mook765
yesterday
Device nodes are dynamically created by
udev - although it is possible to write udev rules to assign specific ownership/permissions to particular devices, it would be better IMHO to assign appropriate group membership to the Android Studio user. See for example Android Studio: /dev/kvm device permission denied– steeldriver
yesterday
Device nodes are dynamically created by
udev - although it is possible to write udev rules to assign specific ownership/permissions to particular devices, it would be better IMHO to assign appropriate group membership to the Android Studio user. See for example Android Studio: /dev/kvm device permission denied– steeldriver
yesterday
Related: Ubuntu 14 Android Studio 3 xrdp /dev/kvm permission denied
– steeldriver
yesterday
Related: Ubuntu 14 Android Studio 3 xrdp /dev/kvm permission denied
– steeldriver
yesterday
Looks like you should add the user to the
kvm-group instead of changing the ownership of the character device file.– mook765
yesterday
Looks like you should add the user to the
kvm-group instead of changing the ownership of the character device file.– mook765
yesterday
add a comment |
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Device nodes are dynamically created by
udev- although it is possible to write udev rules to assign specific ownership/permissions to particular devices, it would be better IMHO to assign appropriate group membership to the Android Studio user. See for example Android Studio: /dev/kvm device permission denied– steeldriver
yesterday
Related: Ubuntu 14 Android Studio 3 xrdp /dev/kvm permission denied
– steeldriver
yesterday
Looks like you should add the user to the
kvm-group instead of changing the ownership of the character device file.– mook765
yesterday