GNU bug report logs - #29207
info chmod

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: kalle <kalle <at> projektwerkstatt.de>
To: bug-coreutils <at> gnu.org
Subject: info chmod
Date: Wed, 08 Nov 2017 11:54:30 +0100

info chmod doesn't say, which users can apply it successfully. The same
for info chown.
Are the related man-pages also maintained by GNU coreutils? They also
have the same deficiencies...

greetings,
kalle

Message #8 received at 29207 <at> debbugs.gnu.org (full text, mbox):

From: Bernhard Voelker <mail <at> bernhard-voelker.de>
To: kalle <kalle <at> projektwerkstatt.de>, 29207 <at> debbugs.gnu.org
Subject: Re: bug#29207: info chmod
Date: Thu, 9 Nov 2017 11:53:33 +0100

On 11/08/2017 11:54 AM, kalle wrote:
> info chmod doesn't say, which users can apply it successfully. The same
> for info chown.

Well, it does - indirectly:

  https://www.gnu.org/software/coreutils/manual/html_node/chmod-invocation.html#chmod-invocation

  [...] This behavior depends on the policy and functionality of the
  underlying chmod system call. When in doubt, check the underlying
  system behavior.

Unfortunately, the above is mentioned in the context of set-
user-ID and set-group-ID, although it generally applies.

For GNU/Linux systems, this usually means that only root and the owner
of the file can chmod(2).

> Are the related man-pages also maintained by GNU coreutils? They also
> have the same deficiencies...

Also here, this is documented ... but also in the 'SETUID AND SETGID BITS'
context.

Have a nice day,
Berny

Message #11 received at 29207 <at> debbugs.gnu.org (full text, mbox):

From: kalle <kalle <at> projektwerkstatt.de>
To: Bernhard Voelker <mail <at> bernhard-voelker.de>, 29207 <at> debbugs.gnu.org
Subject: Re: bug#29207: info chmod
Date: Mon, 20 Nov 2017 09:42:37 +0100

On 09.11.2017 11:53, Bernhard Voelker wrote:
> On 11/08/2017 11:54 AM, kalle wrote:
>> info chmod doesn't say, which users can apply it successfully. The same
>> for info chown.
> Well, it does - indirectly:
>
>    https://www.gnu.org/software/coreutils/manual/html_node/chmod-invocation.html#chmod-invocation
>    [...] This behavior depends on the policy and functionality of the
>    underlying chmod system call. When in doubt, check the underlying
>    system behavior.
well, i understand this at a reference to chmod (2). But it is not 
explicit.
I think this should be changed then.
> Unfortunately, the above is mentioned in the context of set-
> user-ID and set-group-ID, although it generally applies.
>
> For GNU/Linux systems, this usually means that only root and the owner
> of the file can chmod(2).
>
>> Are the related man-pages also maintained by GNU coreutils? They also
>> have the same deficiencies...
> Also here, this is documented ... but also in the 'SETUID AND SETGID BITS'
> context.
>
> Have a nice day,
> Berny
greetings,kalle

Message #14 received at 29207 <at> debbugs.gnu.org (full text, mbox):

From: Bernhard Voelker <mail <at> bernhard-voelker.de>
To: kalle <kalle <at> projektwerkstatt.de>, 29207 <at> debbugs.gnu.org
Subject: Re: bug#29207: info chmod
Date: Sat, 16 Dec 2017 23:10:07 +0100

[Message part 1 (text/plain, inline)]

On 11/20/2017 09:42 AM, kalle wrote:
> I think this should be changed then.

The attached patch (almost) copies a sentence from the POSIX
spec into the Texinfo manual.

Have a nice day,
Berny

[0001-doc-mention-which-privileges-are-needed-to-chmod.patch (text/x-patch, attachment)]

Message #19 received at 29207-done <at> debbugs.gnu.org (full text, mbox):

From: Bernhard Voelker <mail <at> bernhard-voelker.de>
To: kalle <kalle <at> projektwerkstatt.de>, 29207-done <at> debbugs.gnu.org
Subject: Re: bug#29207: info chmod
Date: Mon, 18 Dec 2017 08:11:11 +0100

On 12/16/2017 11:10 PM, Bernhard Voelker wrote:
> The attached patch [...]

push with a slightly improved commit message at
  https://git.sv.gnu.org/cgit/coreutils.git/commit/?id=47fb363432

Marking this as done.

Have a nice day,
Berny

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