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

2023-07-18 Thread Coeur Noir
Ok, ok, amen, so be it.

If it's ok in fstab, if bash always expands correctly then you're right,
don't change anything if it would bring more annoyance than ease of
life.

Title is « won't warn neither prevent usage of « risky » characters in labels »
Nothing else.

Accented letters in partition label seem ( nowadays ) a problem with
latest Ubuntu installer - as reported by geole on the forum ( am just
quoting here as I was unable to do anything with the latest Ubuntu
installer by my side, so can't confirm myself. )

No backpedaling from me - your bad reading because you jumped on
accented letters while I always was worrying about the « special / risky
» characters and insisted twice on that matter.

« Why should we print some kind of nanny-state, "naughty, naughty! you did 
something that might confuse a less clueful user!!" warning »
Because that's how you catch attention on a topic and eventually teach someone 
how to do better, for self and others.

Anyway thank you for your answers and explanations which justify why e2label 
needs no change.
Labels can't be an issue if I understand correctly. 

( oot : foolproof is the first translation I've found for « à toute
épreuve » ; bulletproof ? )

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You received this bug notification because you are a member of Ubuntu
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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@p:~$ sudo e2label /dev/sdb12 /Ti\$*
  a@p:~$

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

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

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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/2027979/+subscriptions


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

2023-07-18 Thread Theodore Ts'o
Your original bug request said: "e2label lets you use any character,
including / or * or $ ( and probably others, like accented letters é è à
). it should not be possible to use those in label names."   You've
now backpedaled and said, "I never said that!  Only "risky" characters!"

"Risky" as defined by whom?In your example, lsblk and e2label
displayed the label without a problem.   Who cares if you needed to use
a backslash to protect the "$" or "*" or " " characters?  They look just
fine.  And if the argument is that space character is well managed by
auto-completion in most CLI "mostly", I'll note that so is the "*"
character.  For example:

% touch qfoo\*bar
% ls qf

... and bash will expand that to "qfoo\*bar" so it works just **fine**
with bash.   I've just checked and the completion function used in ksh,
tcsh, and emacs (which does not require any quoting so that's a gimme)
means that it works just fine.   So any argument that you use for
outlawing * in labels would apply to spaces, too  and if for labels,
why not filenames?   Shouldn't filenames be "robust" and "foolproof"?
By some unknown definition of "fool"?

Going back to labels  for the most part, labels are mostly used for
display purposes, so if someone happens to create a label with a ' ',
'*', or '$' character, it's not a big deal; lsblk, blkid, etc. will
display them just fine.   And no escaping is necessary if you put a
special character in /etc/fstab.  For example, the following works in
/etc/fstab:

LABEL=foo$bar /mnt ext4 defaults 0 0

Sure, some care might be needed to *set* the label to "foo$bar" --- you
might need to type "e2label /dev/loop0 'foo$bar'" --- but the quoting
rules are enforced by the shell.  It might be some other shell might not
use "$" for variables --- or there might be a disk management GUI which
doesn't use quoting, just as emacs and Libreoffice doesn't require
quoting for file names with spaces in it.   So setting some arbitrary
rule because of the interface that the user might be using doesn't make
any sense.   If the user is smart enough to figure out how to pass
'foo$bar' to e2label, we should let them use it.  Why should we print
some kind of nanny-state, "naughty, naughty!  you did something that
might confuse a less clueful user!!" warning.

Again, the standard that said we should do that for labels would also
apply to characters, and then I will have *other* launchpad users
complaining to me about why did I set some kind of arbitrary
restriction, and that they had a perfectly good reason for wanting to
use these characters in their label or their filenames.

-- 
You received this bug notification because you are a member of Ubuntu
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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@p:~$ sudo e2label /dev/sdb12 /Ti\$*
  a@p:~$

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

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

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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/2027979/+subscriptions


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

2023-07-18 Thread 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 ?

-- 
You received this bug notification because you are a member of Ubuntu
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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@p:~$ sudo e2label /dev/sdb12 /Ti\$*
  a@p:~$

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

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

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

To manage notifications about this bug go to:
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[Touch-packages] [Bug 2027979] Re: won't warn neither prevent usage of « risky » characters in labels

2023-07-18 Thread Theodore Ts'o
Right, but exactly the same argument can be made about disallowing
anything other than plain ASCII characters in file names.  It may be
that in some graphical interfaces, spaces and accented characters and
special characters like "$" don't require any escaping whatsoever.   In
other command-line interfaces, they require escaping.  Shall we not
allow spaces when saving OpenOffice filenames because when you look at
the using the command line interface, you need to type something like:

/media/arena/Music/Coig/Carols/01\ Carol\ of\ the\ Celts.mp3

Sure, this might be "confusing to the uneducated user", but just go
ahead and file a bug against RipperX claiming that all such filenames
should prohibited.  I'll wait, and see what you get back from the
author

If we are going to restrict labels and filenames to least common
denominators, then we can't allow any special characters, because the
"uneducated user" might not know how to type "è" on a US keyboard.
Where do we draw the line in terms of enforcing policy to protect the
"uneducated user" from themselves?

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to e2fsprogs in Ubuntu.
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@p:~$ sudo e2label /dev/sdb12 /Ti\$*
  a@p:~$

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

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

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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/2027979/+subscriptions


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

2023-07-18 Thread Coeur Noir
You misread the case here, Theodore.
It's not a problem of language - accented letters and diacritics are used in 
many languages and might be used in labels.

Sorry for me just being a stupid downstream user. Such names with «
special » characters in are a flawed design as they have high potential
for confusion ( both for human and system. )

As in your example

foo\$bar → becomes → 'foo\x24bar' → not exactly the same form, which
might not be expected by uneducated user. And ( legitimately ) escaped
but not usable « as is » in all context.



In fact, there's nothing wrong with using any of these characters in
file system labels.

Of course, there's something wrong about using *some* of those characters / \ 
space * $ #
Accented letters are not the issue ( except with new Ubuntu installer… )

What will be the output of

cd /path/to/{ any label containing / or * or $ or spaces in its name }

if { label name } is not escaped ?

To prevent user from any later confusion, e2label should at least gives
a warning if « special » characters are used inside a label.

And my opinion is that e2label should strictly prevent using those « special » 
characters inside label.
While those can be « managed » with escaping, « names » in paths should never 
create confusion, so avoiding by default / or $ or * sound safer to me.

-- 
You received this bug notification because you are a member of Ubuntu
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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@p:~$ sudo e2label /dev/sdb12 /Ti\$*
  a@p:~$

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

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

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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/2027979/+subscriptions


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

2023-07-17 Thread Theodore Ts'o
Flawed by what definition? Editors allow people to create files with
spaces, or with dollar signs, or with accepted characters. Some of these
characters may require quoting if you use spaces or doll=lars. Not
allowing accented characters will cause speakers of various European
languages to complain that you're not letting them use french words in
file names (or file system labels), and this is an unacceptable English
language hegemony over the great languange which is French. :-)

In fact, there's nothing wrong with using any of these characters in
file system labels. For example, look at /dev/disk/by-label for a
filesystem set with "e2label /tmp/foo.img foo\$bar":

# ls /dev/disk/by-label/
total 0
ext-disk 'foo\x24bar' lambda-backup old-files@
   
And with the filename label set via "e2label /tmp/foo.img Misère"

# /bin/ls /dev/disk/by-label
ext-disk lambda-backup Misère old-files
 ^^^

So how are these characters flawed? what makes them be forced to wear a
large scarlet letter "A" over their clothing? Why shouldn't the french
be allowed to use accepted characters in file names or in file system
labels?

Inquiring minds want to know but as the upstream maintainer of
e2fsprogs, I absolutely reject this as a bug.

-- 
You received this bug notification because you are a member of Ubuntu
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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@p:~$ sudo e2label /dev/sdb12 /Ti\$*
  a@p:~$

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

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

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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/2027979/+subscriptions


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

2023-07-17 Thread Theodore Ts'o
-- 
You received this bug notification because you are a member of Ubuntu
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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@p:~$ sudo e2label /dev/sdb12 /Ti\$*
  a@p:~$

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

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

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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/2027979/+subscriptions


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

2023-07-17 Thread Coeur Noir
« Hence, this feature request should not be considered a security
feature »

Nobody said it was a security feature.

But I surely think it's inappropriate that an utility allows to create «
flawed » labels.

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

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

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

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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/2027979/+subscriptions


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

2023-07-17 Thread Theodore Ts'o
In order for e2label to modify the file system label, you need to have
write access to the block device.   That means that a malicious user can
always directly modify the blockdevice (or just use a version of e2label
that doesn't have the proposed check).Hence, this feature request
should not be considered a security feature.   This seems to be more of
a "protect a naive / clueless user who tries to set a file system label:
'Make money fa$t".

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to e2fsprogs in Ubuntu.
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@p:~$ sudo e2label /dev/sdb12 /Ti\$*
  a@p:~$

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

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

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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/2027979/+subscriptions


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

2023-07-17 Thread den
hi , same things is possible [b]without[/b] escaping any special characters in 
the gparted application .
For example , i can give a new label to an ext partition entering : /DATA/é*/$  
.

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

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

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

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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/2027979/+subscriptions


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

2023-07-17 Thread Launchpad Bug Tracker
Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: e2fsprogs (Ubuntu)
   Status: New => Confirmed

-- 
You received this bug notification because you are a member of Ubuntu
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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@p:~$ sudo e2label /dev/sdb12 /Ti\$*
  a@p:~$

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

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

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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/2027979/+subscriptions


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

2023-07-17 Thread Coeur Noir
** Description changed:

  Hi,
  
  if naming or renaming an EXT volume,
  
  e2label lets you use any character, including / or * or $ ( and probably
- others )
+ 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@p:~$ sudo e2label /dev/sdb12 /Ti\$*
- a@p:~$ 
+ a@p:~$
  
  a@p:~$ sudo e2label /dev/sdb12
  /Ti$*
- a@p:~$ 
+ a@p:~$
  
  a@p:~$ lsblk -fe7 | grep sdb12
- └─sdb12   ext4  1.0   /Ti$* 
f583e9b0-f1de-438f-8da8-c1e070407628
- a@p:~$ 
+ └─sdb12   ext4  1.0   /Ti$* 
f583e9b0-f1de-438f-8da8-c1e070407628
+ a@p:~$
  
  coming from https://forum.ubuntu-
  fr.org/viewtopic.php?pid=22692892#p22692892 ( french )

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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:
  New

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

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

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

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

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