From: "Török Edwin" <edwin+ml-ocaml@etorok.net>
To: caml-list@inria.fr
Subject: Re: [Caml-list] Re: Unix.getlogin () fails when stdin is redirected
Date: Wed, 21 Mar 2012 14:26:30 +0200 [thread overview]
Message-ID: <4F69C8F6.2050408@etorok.net> (raw)
In-Reply-To: <20120320224525.GE3352@siouxsie>
On 03/21/2012 12:45 AM, oliver wrote:
> Are there so many bugs in glibc that fixing this one means waiting
> in a long, long queue... and bugfixes will need months or years?
>
> Are there any reasons this bug is not already fixed?
> And since when is it known?
Using stdin might be on purpose, this is what a glibc comment says:
/* Get name of tty connected to fd 0. Return NULL if not a tty or
if fd 0 isn't open. Note that a lot of documentation says that
getlogin() is based on the controlling terminal---what they
really mean is "the terminal connected to standard input". The
getlogin() implementation of DEC Unix, SunOS, Solaris, HP-UX all
return NULL if fd 0 has been closed, so this is the compatible
thing to do. Note that ttyname(open("/dev/tty")) on those
systems returns /dev/tty, so that is not a possible solution for
getlogin(). */
--Edwin
next prev parent reply other threads:[~2012-03-21 12:26 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-20 17:51 [Caml-list] " Ricardo Catalinas Jiménez
2012-03-20 18:07 ` [Caml-list] " Ricardo Catalinas Jiménez
2012-03-20 18:28 ` David House
2012-03-20 18:48 ` Till Varoquaux
2012-03-20 19:41 ` Yaron Minsky
2012-03-20 20:12 ` Till Varoquaux
2012-03-20 22:45 ` oliver
2012-03-21 12:26 ` Török Edwin [this message]
2012-03-21 2:17 ` [Caml-list] " malc
2012-03-21 11:29 ` Gerd Stolpmann
2012-03-21 17:59 ` malc
2012-03-21 0:51 [Caml-list] " Gerd Stolpmann
2012-03-21 2:10 ` Yaron Minsky
2012-03-21 2:22 ` Yaron Minsky
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