Messages in this thread | | | Date | Tue, 12 Feb 2019 20:38:09 +0000 | From | Al Viro <> | Subject | Re: [PATCH 4/4] Return -EINVAL if userspace passes bogus flags to open() |
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On Tue, Feb 12, 2019 at 09:54:47AM -0500, demiobenour@gmail.com wrote: > From: "Demi M. Obenour" <demiobenour@gmail.com> > > While testing the O_PATHSTATIC patch, I discovered that Linux does not > return any error if an invalid flag is passed to open(2). This prevents > adding new flags without a (minor) risk of breaking userspace. > Therefore, add a check for invalid flags, and return -EINVAL if any are > found.
... which would qualtify as userland ABI breakage all by itself.
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