[haiku-development] Re: ioctl
- From: Brecht Machiels <brecht@xxxxxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Mon, 27 Jul 2009 00:23:20 +0000
Ingo Weinhold wrote:
> replying here, since my mails to you keep bouncing:
>
> Hi. This is the qmail-send program at mail.gmx.net.
> I'm afraid I wasn't able to deliver your message to the following
addresses.
> This is a permanent error; I've given up. Sorry it didn't work out.
>
> <brecht@xxxxxxxxxxx>:
>
83.101.57.79_does_not_like_recipient./Remote_host_said:_554_5.7.1_Service_unavailable;_Client_host_[213.165.64.20]_blocked_using_dnsbl.sorbs.net;_Currently_Sending_Spam_See:_http://www.sorbs.net/lookup.shtml?213.165.64.20/Giving_up_on_83.101.57.79./
It appears SORBS have some false positives occasionally. I've removed it
from my RBL list. You should be able to reach me again now.
> ioctl() can be called on any file or directory as well. The vnode's
ioctl()
> hook will be called. If you're using the userlandfs, you must explicitly
> specify which ioctls it shall tunnel to the client FS via a kernel
settings
> file. Have a look at
src/add-ons/kernel/file_systems/userlandfs/userlandfs.
Great. It's working now!
>> When I mount assignfs (not specifying a device), assignfs_mount() is
>> called with device = "//". Shouldn't this be NULL?
>
> Doesn't sound right indeed. Please file a Trac ticket for that, so
that it
> won't get forgotten.
http://dev.haiku-os.org/ticket/4125
For you to fix, as I'm not sure what Address does. Not a blocker for me,
so take your time :)
>> On a related note, I have implemented open(), read(), close() and
>> free_cookie() only for files. BFS seems to implement these for
>> directories too (except perhaps read() - I haven't checked the sources).
>> Is this required? What is it used for?
>
> Yes, that's indeed required. The open()/close() hooks are basically the
> backends for the equally named POSIX functions and those are supposed to
> work on directories, too. read() and write() must fail for directories,
> though.
What is the purpose of being able to open() directories? Pointing me to
a reference is fine. I haven't been able to find anything on it.
Brecht
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