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Date:   Sat, 27 Feb 2021 21:21:09 -0500
Message-Id: <C9KSZTRJ2CL6.DWD539LYTVZX@taiga>
Cc:     <linux-fsdevel@vger.kernel.org>, <linux-api@vger.kernel.org>,
        "Aleksa Sarai" <cyphar@cyphar.com>
Subject: Re: [RFC PATCH] fs: introduce mkdirat2 syscall for atomic mkdir
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From:   "Drew DeVault" <sir@cmpwn.com>
To:     "Al Viro" <viro@zeniv.linux.org.uk>
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 <YDr8UihFQ3M469x8@zeniv-ca.linux.org.uk>
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On Sat Feb 27, 2021 at 9:13 PM EST, Al Viro wrote:
> No to the ABI part; "on error it returns -E..., on success - 0 or a
> non-negative number representing a file descriptor (zero also
> possible, but unlikely)" is bloody awful as calling conventions go,
> especially since the case when 0 happens to be a descriptor is not
> going to get a lot of testing on the userland side.

Hm, I was just trying to mimic the behavior of open(2). Do you have a
better suggestion?