Date: Sat, 2 Feb 2002 02:40:02 -0800 (PST)
From: "Artem 'Zazoobr' Ignatjev" <timon@memphis.mephi.ru>
To: freebsd-bugs@FreeBSD.org
Subject: Re: bin/34483: wrong execv() call in amd for ${mount} and ${unmount} if mount type:=program in amd.map
Message-ID: <200202021040.g12Ae2h65743@freefall.freebsd.org>
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The following reply was made to PR bin/34483; it has been noted by GNATS.
From: "Artem 'Zazoobr' Ignatjev" <timon@memphis.mephi.ru>
To: freebsd-gnats-submit@freebsd.org
Cc:
Subject: Re: bin/34483: wrong execv() call in amd for ${mount} and ${unmount} if mount type:=program in amd.map
Date: Sat, 2 Feb 2002 13:38:28 +0300 (MSK)
Hi.
Here is reply from author, Erez Zadok (from amd-dev <amd-dev@cs.columbia.edu> mailing list):
> From ezk@shekel.mcl.cs.columbia.edu Sat Feb 2 07:11:08 2002
> Date: Fri, 1 Feb 2002 23:11:02 -0500 (EST)
> From: Erez Zadok <ezk@cs.columbia.edu>
> To: "Artem 'Zazoobr' Ignatjev" <timon@memphis.mephi.ru>
> Cc: amd-dev@cs.columbia.edu
> Subject: Re: wrong execv() call for ${mount} and ${unmount} if mount type:=program in amd.map
> I don't think that's a bug. The mount:= variable in amd requires special
> syntax that's a little different than an argv[] list. If the command to
> mount something is, say, "mount /this /here", then you have to specify the
> map entry as
>
> type:=program;mount:="/etc/mount mount /this /here"
>
> IOW, you also list the program name's full path (here etc/mount) in the list
> of args to the program type's mount:= variable.
>
> That has been the syntax for amd's program type since the beginning. It's a
> source of unfortunate confusion to programmers who are used to think that
> it's just an argv[] list. It's not.
> Erez.
But I still think, that in case of hardlinks, this patch will work, and all man have to do
is to write the correct path in map; in other cases there could be no possibility to mount
filesystem "by hands", without writing shell script/tiny program, which will call exec...() on
one path, giving argv[0] with other prog's name.
Wishes & regards, Artem.
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