From: Rich Felker <dalias@aerifal.cx>
To: musl@lists.openwall.com
Subject: Re: Difficulty emulating F_DUPFD_CLOEXEC
Date: Sat, 23 Mar 2013 22:12:23 -0400 [thread overview]
Message-ID: <20130324021223.GA20323@brightrain.aerifal.cx> (raw)
In-Reply-To: <20130324020910.GZ20323@brightrain.aerifal.cx>
On Sat, Mar 23, 2013 at 10:09:10PM -0400, Rich Felker wrote:
> + if (cmd == F_DUPFD_CLOEXEC) {
> + int ret = __syscall(SYS_fcntl, fd, F_DUPFD_CLOEXEC, arg);
> + if (ret != -EINVAL) return __syscall_ret(ret);
It might be desirable, even if F_DUPFD_CLOEXEC succeeded, to also call
fcntl(ret, F_SETFD, FD_CLOEXEC)... Reportedly somebody broke
F_DUPFD_CLOEXEC somewhere around 3.7.0 so that it silently failed to
set the close-on-exec flag. Anybody know how many kernels are
affected?
Rich
next prev parent reply other threads:[~2013-03-24 2:12 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-24 1:59 Rich Felker
2013-03-24 2:09 ` Rich Felker
2013-03-24 2:12 ` Rich Felker [this message]
2013-03-24 2:10 ` Zvi Gilboa
2013-03-24 2:14 ` Szabolcs Nagy
2013-03-24 2:17 ` Rich Felker
2013-03-24 2:27 ` Zvi Gilboa
2013-03-24 2:33 ` Rich Felker
2013-03-24 2:57 ` Zvi Gilboa
2013-03-24 3:08 ` Rich Felker
2013-03-24 23:51 ` Rob Landley
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