Problem with the chattr command

[jony127]

Hi.

When I run the sudo chattr + i /etc/resolv.conf command I get the following message:

Chattr: The operation is not supported while the flags were being read in /etc/resolv.conf

Why do not you let me run this command?

Thank you.

[Snowhog]

What version of Kubuntu?

[kubicle]

When I run the sudo chattr + i /etc/resolv.conf command I get the following message:
Chattr: The operation is not supported while the flags were being read in /etc/resolv.conf

In newer versions of kubuntu, /etc/resolv.conf is a symbolic link to /run/resolvconf/resolv.conf (because the resolvconf program is in charge of handling /etc/resolv.conf).

And the 'chattr' command doesn't work on symbolic links (instead you should use chattr on the target file if you wish to change it's properties).

I assume you have a reason why you wish to make it immutable?

[oshunluvr]

Yeah, these days to modify resolv.conf manually and keep the edits, go to /etc/resolvconf/resolv.conf.d/ and edit base, head, and tail there.

[jony127]

Okay thanks, as soon as I can prove it.

I'm doing some testing with dnscrypt and that's why I have to protect that file.

[jony127]

making a:
Sudo chattr + i /run/resolvconf/resolv.conf
Chattr: ioctl function not suitable for device while reading flags in /run/resolvconf/resolv.conf

I get the same result.

The base and head files that oshunluvr comments on /etc/resolvconf/resolv.conf.d/ are empty.

[kubicle]

making a:
Sudo chattr + i /run/resolvconf/resolv.conf
Chattr: ioctl function not suitable for device while reading flags in /run/resolvconf/resolv.conf

I get the same result.

Ah sorry, /run is on tmpfs which (as you found out) also does not support extended attributes.

The base and head files that oshunluvr comments on /etc/resolvconf/resolv.conf.d/ are empty.

There are no settings there by default, but if you put settings there, they'll be included in the dynamic resolv.conf.

For example you could append:

nameserver ip.address.of.primarydns
nameserver ip.address.of.secondarydns

(replace "ip.address.of.XXXdns" entries with the actual ip addresses)

to /etc/resolvconf/resolv.conf.d/head and these will be included in resolv.conf upon reconnection

[oshunluvr]

The base and head files that oshunluvr comments on /etc/resolvconf/resolv.conf.d/ are empty.

Yes they are. You have to edit them. It seemed to me like what you were really after was control over resolv.conf.

stuart@office:~$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
domain smith.lan
search smith.lan
nameserver 192.168.1.1
stuart@office:~$ cat /etc/resolvconf/resolv.conf.d/head
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
stuart@office:~$ cat /etc/resolvconf/resolv.conf.d/base
stuart@office:~$ cat /etc/resolvconf/resolv.conf.d/tail
domain smith.lan
search smith.lan
nameserver 192.168.1.1
stuart@office:~$