From: Dave Hansen <dave-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
To: Pavel Machek <pavel-+ZI9xUNit7I@public.gmane.org>
Cc: containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
Nadia Derbey <Nadia.Derbey-6ktuUTfB/bM@public.gmane.org>
Subject: Re: [RFC PATCH 0/5] Resend - Use procfs to change a syscall behavior
Date: Thu, 10 Jul 2008 10:53:35 -0700 [thread overview]
Message-ID: <1215712415.9398.24.camel@nimitz> (raw)
In-Reply-To: <20080710085406.GA13258-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
On Thu, 2008-07-10 at 10:54 +0200, Pavel Machek wrote:
>
> If you don't see a backward compatibility problem here, perhaps you
> should not be hacking kernel...? The way ids are assigned is certainly
> part of syscall semantics (applications rely on), at least for open.
We also used to have a pretty defined ordering for handing out address
space with mmap(). That all changed with address space randomization.
Are file descriptors different somehow?
Anyway, it's not like we're actually changing existing behavior. An
application has to do something special and new to trigger this new
behavior. Nobody is going to stumble over it, and it will *not* break
backward compatibility.
-- Dave
next prev parent reply other threads:[~2008-07-10 17:53 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-03 14:40 [RFC PATCH 0/5] Resend - Use procfs to change a syscall behavior Nadia.Derbey-6ktuUTfB/bM
2008-07-03 14:40 ` [RFC PATCH 1/5] adds the procfs facilities Nadia.Derbey-6ktuUTfB/bM
[not found] ` <20080703144224.723883000-6ktuUTfB/bM@public.gmane.org>
2008-07-07 18:30 ` Serge E. Hallyn
[not found] ` <20080707183030.GA22937-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-07-08 5:25 ` Nadia Derbey
2008-07-03 14:40 ` [RFC PATCH 2/5] use next syscall data to predefine ipc objects ids Nadia.Derbey-6ktuUTfB/bM
[not found] ` <20080703144224.982195000-6ktuUTfB/bM@public.gmane.org>
2008-07-07 18:35 ` Serge E. Hallyn
[not found] ` <20080707183512.GB22937-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-07-08 5:30 ` Nadia Derbey
2008-07-03 14:40 ` [RFC PATCH 3/5] use next syscall data to predefine process ids Nadia.Derbey-6ktuUTfB/bM
[not found] ` <20080703144225.489624000-6ktuUTfB/bM@public.gmane.org>
2008-07-07 18:54 ` Serge E. Hallyn
[not found] ` <20080707185424.GA25934-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-07-08 5:44 ` Nadia Derbey
2008-07-03 14:40 ` [RFC PATCH 4/5] use next syscall data to change the behavior of IPC_SET Nadia.Derbey-6ktuUTfB/bM
2008-07-03 14:40 ` [RFC PATCH 5/5] use next syscall data to predefine the file descriptor value Nadia.Derbey-6ktuUTfB/bM
[not found] ` <20080703144013.737951000-6ktuUTfB/bM@public.gmane.org>
2008-07-04 10:27 ` [RFC PATCH 0/5] Resend - Use procfs to change a syscall behavior Pavel Machek
[not found] ` <20080704102702.GB4531-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
2008-07-04 12:07 ` Nadia Derbey
[not found] ` <486E1276.2080605-6ktuUTfB/bM@public.gmane.org>
2008-07-08 10:51 ` Pavel Machek
[not found] ` <20080708105143.GA15311-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
2008-07-08 21:47 ` Serge E. Hallyn
[not found] ` <20080708214721.GA1972-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-07-08 21:53 ` Pavel Machek
[not found] ` <20080708215315.GD17083-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
2008-07-10 6:54 ` Nadia Derbey
[not found] ` <4875B212.5030604-6ktuUTfB/bM@public.gmane.org>
2008-07-10 7:01 ` [Devel] " Paul Menage
[not found] ` <6599ad830807100001j3f3a6cf2y7a19dda9382edb2c-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-07-10 9:14 ` Nadia Derbey
[not found] ` <4875D2EA.4010407-6ktuUTfB/bM@public.gmane.org>
2008-07-10 9:30 ` Paul Menage
[not found] ` <6599ad830807100230k2f3f3551sa4b804f4c20b43fe-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-07-10 10:11 ` Nadia Derbey
2008-07-10 7:42 ` Nadia Derbey
[not found] ` <4875BD4B.2070402-6ktuUTfB/bM@public.gmane.org>
2008-07-10 8:54 ` Pavel Machek
[not found] ` <20080710085406.GA13258-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
2008-07-10 9:29 ` Nadia Derbey
2008-07-10 17:53 ` Dave Hansen [this message]
2008-07-10 18:45 ` Pavel Machek
[not found] ` <20080710184512.GA19428-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
2008-07-10 19:04 ` Dave Hansen
2008-07-10 19:27 ` Serge E. Hallyn
2008-07-07 19:01 ` Serge E. Hallyn
[not found] ` <20080707190119.GB25934-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-07-08 10:52 ` Pavel Machek
[not found] ` <20080708105228.GB15311-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
2008-07-08 21:50 ` Serge E. Hallyn
[not found] ` <20080708215034.GB2179-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-07-08 21:58 ` Pavel Machek
[not found] ` <20080708215821.GE17083-I/5MKhXcvmPrBKCeMvbIDA@public.gmane.org>
2008-07-09 2:20 ` Serge E. Hallyn
[not found] ` <20080709022035.GA21249-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-07-10 7:58 ` Nadia Derbey
[not found] ` <4875C138.5060506-6ktuUTfB/bM@public.gmane.org>
2008-07-10 8:34 ` [Devel] " Paul Menage
[not found] ` <6599ad830807100134l362ab98bt868e078eeb17b838-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-07-10 9:38 ` Nadia Derbey
2008-07-17 22:26 ` Oren Laadan
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