* Convert a file descriptor from Cygwin openat() to Win32 file HANDLE?
@ 2024-03-04 6:16 Cedric Blancher
2024-03-04 6:59 ` Mark Geisert
2024-03-04 8:21 ` Andrey Repin
0 siblings, 2 replies; 4+ messages in thread
From: Cedric Blancher @ 2024-03-04 6:16 UTC (permalink / raw)
To: cygwin
Good morning!
How can I convert a file descriptor from Cygwin openat() to Win32 file HANDLE?
Ced
--
Cedric Blancher <cedric.blancher@gmail.com>
[https://plus.google.com/u/0/+CedricBlancher/]
Institute Pasteur
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Convert a file descriptor from Cygwin openat() to Win32 file HANDLE?
2024-03-04 6:16 Convert a file descriptor from Cygwin openat() to Win32 file HANDLE? Cedric Blancher
@ 2024-03-04 6:59 ` Mark Geisert
2024-03-04 8:21 ` Andrey Repin
1 sibling, 0 replies; 4+ messages in thread
From: Mark Geisert @ 2024-03-04 6:59 UTC (permalink / raw)
To: cygwin
On 3/3/2024 10:16 PM, Cedric Blancher via Cygwin wrote:
>
> How can I convert a file descriptor from Cygwin openat() to Win32 file HANDLE?
In general, this can be done with:
hFile = (HANDLE) _get_osfhandle (int fd);
That works for simple cases such as disk file descriptors. I've learned
one can't always depend on it because Cygwin can use several handles for
a specific file or other object in certain situations, which I'm not
going to list here because I don't know them all.
Try that and see if it works for your case.
..mark
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: Convert a file descriptor from Cygwin openat() to Win32 file HANDLE?
2024-03-04 6:16 Convert a file descriptor from Cygwin openat() to Win32 file HANDLE? Cedric Blancher
2024-03-04 6:59 ` Mark Geisert
@ 2024-03-04 8:21 ` Andrey Repin
2024-03-05 8:45 ` Cedric Blancher
1 sibling, 1 reply; 4+ messages in thread
From: Andrey Repin @ 2024-03-04 8:21 UTC (permalink / raw)
To: Cedric Blancher, cygwin
Greetings, Cedric Blancher!
> How can I convert a file descriptor from Cygwin openat() to Win32 file HANDLE?
In general, you should not attempt to do such thing.
If you have a very specific idea in mind, it would be best to describe, what
you are trying to achieve, so community could provide a more meaningful
suggestion to solve your specific issue.
--
With best regards,
Andrey Repin
Monday, March 4, 2024 11:19:58
Sorry for my terrible english...
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Convert a file descriptor from Cygwin openat() to Win32 file HANDLE?
2024-03-04 8:21 ` Andrey Repin
@ 2024-03-05 8:45 ` Cedric Blancher
0 siblings, 0 replies; 4+ messages in thread
From: Cedric Blancher @ 2024-03-05 8:45 UTC (permalink / raw)
To: cygwin
On Mon, 4 Mar 2024 at 09:35, Andrey Repin <anrdaemon@yandex.ru> wrote:
>
> Greetings, Cedric Blancher!
>
> > How can I convert a file descriptor from Cygwin openat() to Win32 file HANDLE?
>
> In general, you should not attempt to do such thing.
> If you have a very specific idea in mind, it would be best to describe, what
> you are trying to achieve, so community could provide a more meaningful
> suggestion to solve your specific issue.
The idea is to add raw SID support for users and groups to /bin/ls,
and that only works with access to the raw SIDs
Ced
--
Cedric Blancher <cedric.blancher@gmail.com>
[https://plus.google.com/u/0/+CedricBlancher/]
Institute Pasteur
^ permalink raw reply [flat|nested] 4+ messages in thread
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2024-03-04 6:16 Convert a file descriptor from Cygwin openat() to Win32 file HANDLE? Cedric Blancher
2024-03-04 6:59 ` Mark Geisert
2024-03-04 8:21 ` Andrey Repin
2024-03-05 8:45 ` Cedric Blancher
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