Re: [PATCHv4 man-pages 3/3] open.2: describe O_BENEATH flag

[Andy Lutomirski]

On Fri, Aug 14, 2015 at 2:29 AM, David Drysdale <drysdale@xxxxxxxxxx> wrote:
> On Fri, Aug 14, 2015 at 6:33 AM, Michael Kerrisk (man-pages)
> <mtk.manpages@xxxxxxxxx> wrote:
>> On 13 August 2015 at 19:38, Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote:
>>> On Thu, Aug 13, 2015 at 2:32 AM, David Drysdale <drysdale@xxxxxxxxxx> wrote:
>>>> Signed-off-by: David Drysdale <drysdale@xxxxxxxxxx>
>>>
>>> What's the behavior wrt fcntl(F_GETFL, etc)?
>>
>> I would presume that O_BENEATH is one of the so-called "file creation
>> flags". See this paragraph of the DESCRIPTION:
>>
>>        In addition, zero or more file creation  flags  and  file  status
>>        flags  can be bitwise-or'd in flags.  The file creation flags are
>>        O_CLOEXEC, O_CREAT, O_DIRECTORY,  O_EXCL,  O_NOCTTY,  O_NOFOLLOW,
>>        O_TMPFILE,  O_TRUNC,  and  O_TTY_INIT.  The file status flags are
>>        all of the remaining flags listed below.  The distinction between
>>        these  two  groups  of flags is that the file status flags can be
>>        retrieved and (in some cases) modified; see fcntl(2) for details.
>>
>> David, presuming this is correct (I can't see how O_BENEATH could be a
>> "file *status* flag"), your patch should also add O_BENEATH to the
>> list in that paragraph.
>
> Yeah, O_BENEATH makes sense as a file creation flag; I'll add it
> to that list -- thanks for spotting.

Should there be a test that you can't clear O_BENEATH with F_SETFL?

--Andy
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