[Bug 2027979] Re: won't warn neither prevent usage of « risky » characters in labels

[Coeur Noir]

A warning if « special » characters are used in labels might be a first
step in the right direction.

Once again accented letters and diacritics are not the problem here
but characters that might get « translated » as « functions » such as / \ * and few others.

Only those.

Space character is rather well managed by auto-completion in most CLI.
Mostly.

It's not least common denominator but only the few characters that could be « risky ».
All other characters remain possible.

And it's not only about « uneducated user », it's just safer for
everyone by making labels more robust and « foolproof ».

But hey am just the stupid user ( sheep ) and you are the upstream maintainer ( god ).
You could make e2label smarter but you can't make users smarter after all…
So be it ?

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https://bugs.launchpad.net/bugs/2027979

Title:
  won't warn neither prevent usage of « risky » characters in labels

Status in e2fsprogs package in Ubuntu:
  Confirmed

Bug description:
  Hi,

  if naming or renaming an EXT volume,

  e2label lets you use any character, including / or * or $ ( and
  probably others, like accented letters é è à )

  I'd expect at least a warning if such are to be found in a label name.

  Or better, it should not be possible to use those in label names.

  Example :

  a at p:~$ sudo e2label /dev/sdb12 /Ti\$*
  a at p:~$

  a at p:~$ sudo e2label /dev/sdb12
  /Ti$*
  a at p:~$

  a at p:~$ lsblk -fe7 | grep sdb12
  └─sdb12   ext4              1.0   /Ti$*             f583e9b0-f1de-438f-8da8-c1e070407628
  a at p:~$

  coming from https://forum.ubuntu-
  fr.org/viewtopic.php?pid=22692892#p22692892 ( french )

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