Re: richacl(7) man page review comments

["Michael Kerrisk (man-pages)" <mtk.manpages@xxxxxxxxx>]

On 02/20/2016 05:37 PM, Andreas Gruenbacher wrote:
> Hi Michael,
> 
> thanks again for all the feedback. I've followed all your suggestions;
> again, please see the github repo for the latest version:
> 
>   https://github.com/andreas-gruenbacher/richacl
> 
> On Sun, Feb 14, 2016 at 10:31 PM, Michael Kerrisk (man-pages)
> <mtk.manpages@xxxxxxxxx> wrote:
>> Hi Andreas,
>>
>> Here's a few more comments on the current richacl(7) page
>> that I fetched from the git repo.
>>

[...]

>>> .HP
>>> .BR dir_inherit "\ (" d ):
>>> The entry is inheritable for directories.
>>
>> "When this flag appears in the ACL entry of a directory, then that entry is
>> inherited by new subdirectories created in the directory."
>>
>> Is that text that I propose correct?
> 
> It's not entirely wrong, but only a small part of the truth. Entries
> are inherited such that the permissions in file_inherit entries become
> effective for access checking for new files, and the permissions in
> dir_inherit entries become effective for access checking for new
> directories, recursively.
> 
> Your feedback prompted me to look into the inheritance flag
> computation more closely once again, and I found bugs. The steps of
> the algorithm are explained in the section "Permissions at
> file-creation time", by the way.

Hmmm... writing and refining documentation helps find code bugs. 
Who knew? :-)

Cheers,

Michael

-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/