NetBSD Problem Report #44498
From mouse@Sparkle.Rodents-Montreal.ORG Mon Jan 31 13:31:11 2011
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Date: Mon, 31 Jan 2011 08:31:08 -0500 (EST)
From: der Mouse <mouse@Rodents-Montreal.ORG>
Reply-To: mouse@Rodents-Montreal.ORG
To: gnats-bugs@gnats.NetBSD.org
Subject: [dM] tar unnecessarily demands wd name
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>Number: 44498
>Category: bin
>Synopsis: [dM] tar(1) unnecessarily demands that getcwd() work
>Confidential: no
>Severity: serious
>Priority: low
>Responsible: bin-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Mon Jan 31 13:35:00 +0000 2011
>Originator: der Mouse
>Release: NetBSD 4.0.1
>Organization:
Dis-
>Environment:
Probably any 4.0.1; noticed on
System: NetBSD Draupadi.Rodents-Montreal.ORG 4.0.1 NetBSD 4.0.1 (GEN401) #1: Mon Jan 17 04:14:49 EST 2011 mouse@Draupadi.Rodents-Montreal.ORG:/home/mouse/kbuild/GEN401 i386
Architecture: i386
Machine: i386
Also seen on a 5.1 machine.
>Description:
tar(1) demands that it be able to determine its working
directory. This is problematic for normal use; it is
particularly egregious when it happens even for operations such
as "tar tvf -" that have nothing to do with filesystem access.
This is a regression as compared to 1.4T; I no longer have
anything in between to test with. The same problem appears on
morden (5.1_STABLE amd64).
>How-To-Repeat:
% mkdir foo foo/bar
% chmod 111 foo
% cd foo/bar
% tar tvf -
tar: Cannot get working directory (Permission denied)
%
Notice in particular that tar does not even try to actually
perform the operation indicated - it doesn't read anything
before erroring out.
>Fix:
Unknown. Isn't our tar a product from elsewhere? Then this
probably would need a cluestick applied to the upstream
maintainers - or for us to switch tar implementations.
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