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Groups > linux.kernel > #1613317

Re: RFC: reject unknown open flags

From Christoph Hellwig <hch@lst.de>
Newsgroups linux.kernel
Subject Re: RFC: reject unknown open flags
Date 2017-03-30 19:30 +0200
Message-ID <tqM3w-1dT-27@gated-at.bofh.it> (permalink)
References <tqLh7-GX-9@gated-at.bofh.it> <tqLK9-16I-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Thu, Mar 30, 2017 at 10:08:10AM -0700, Linus Torvalds wrote:
> What kind of new flag did you even have in mind that would have such
> broken semantics that it would completely change the other flags?
> Becuase now I'm starting to think that the whole series has an even
> deeper bug: stupid new features that were badly thought out and not
> even described.

Failure atomic file updates, aka O_ATOMIC:

	https://lwn.net/Articles/573092/

Currently the way to probe for it is a new ioctl to check if atomicy
is offered.  This should work, but it's rather fragile..

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Thread

RFC: reject unknown open flags Christoph Hellwig <hch@lst.de> - 2017-03-30 18:40 +0200
  [PATCH 1/2] fs: add a VALID_OPEN_FLAGS Christoph Hellwig <hch@lst.de> - 2017-03-30 18:40 +0200
  [PATCH 2/2] fs: reject unknown open flags Christoph Hellwig <hch@lst.de> - 2017-03-30 18:40 +0200
    Re: [PATCH 2/2] fs: reject unknown open flags Linus Torvalds <torvalds@linux-foundation.org> - 2017-03-30 19:10 +0200
  Re: RFC: reject unknown open flags Linus Torvalds <torvalds@linux-foundation.org> - 2017-03-30 19:10 +0200
    Re: RFC: reject unknown open flags Christoph Hellwig <hch@lst.de> - 2017-03-30 19:30 +0200
      Re: RFC: reject unknown open flags Linus Torvalds <torvalds@linux-foundation.org> - 2017-03-30 20:30 +0200
        Re: RFC: reject unknown open flags Christoph Hellwig <hch@lst.de> - 2017-03-30 20:30 +0200
          Re: RFC: reject unknown open flags Linus Torvalds <torvalds@linux-foundation.org> - 2017-03-30 20:50 +0200
            Re: RFC: reject unknown open flags Boaz Harrosh <boaz@plexistor.com> - 2017-03-30 22:10 +0200
        Re: RFC: reject unknown open flags Paul Eggert <eggert@cs.ucla.edu> - 2017-03-30 21:10 +0200
          Re: RFC: reject unknown open flags Linus Torvalds <torvalds@linux-foundation.org> - 2017-03-30 21:20 +0200
    Re: RFC: reject unknown open flags Florian Weimer <fw@deneb.enyo.de> - 2017-03-30 21:40 +0200

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