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Re: [PATCH] open: introduce O_NOSTD
From: |
Eric Blake |
Subject: |
Re: [PATCH] open: introduce O_NOSTD |
Date: |
Fri, 28 Aug 2009 06:58:25 -0600 |
User-agent: |
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.23) Gecko/20090812 Thunderbird/2.0.0.23 Mnenhy/0.7.6.666 |
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According to Florian Weimer on 8/28/2009 6:52 AM:
>> If the caller requested O_CLOEXEC, then your version takes 3, 5, or
>> 7 syscalls depending on how many std fds were closed, while my
>> version takes 3 syscalls regardless of how many std fds were closed.
>
> I really don't see a way around that. You can't pick a descriptor and
> hope that it's unused.
fcntl(,F_DUPFD,3) is NOT like dup2. It picks the next available
descriptor that is at least 3.
- --
Don't work too hard, make some time for fun as well!
Eric Blake address@hidden
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- [PATCH] open: introduce O_NOSTD, Eric Blake, 2009/08/25
- Re: [PATCH] open: introduce O_NOSTD, Davide Libenzi, 2009/08/25
- Re: [PATCH] open: introduce O_NOSTD, Eric Blake, 2009/08/27
- Re: [PATCH] open: introduce O_NOSTD, Florian Weimer, 2009/08/27
- Re: [PATCH] open: introduce O_NOSTD, Eric Blake, 2009/08/28
- Re: [PATCH] open: introduce O_NOSTD, Florian Weimer, 2009/08/28
- Re: [PATCH] open: introduce O_NOSTD,
Eric Blake <=
- Re: [PATCH] open: introduce O_NOSTD, Eric Blake, 2009/08/28
- Re: [PATCH] open: introduce O_NOSTD, Davide Libenzi, 2009/08/27
- Re: [PATCH] open: introduce O_NOSTD, Ulrich Drepper, 2009/08/27