Path: utzoo!attcan!uunet!lll-winken!lll-tis!ames!joyce!coco0.istc.sri.com!wohler
From: wohler@coco0.istc.sri.com (Bill Wohler)
Newsgroups: comp.sys.hp
Subject: bug in hp nfs (or tar)
Message-ID: <12780@joyce.istc.sri.com>
Date: 27 May 88 07:55:10 GMT
Sender: nobody@joyce.istc.sri.com
Reply-To: wohler@coco0.istc.sri.com.UUCP (Bill Wohler)
Organization: SRI International
Lines: 59


  [part n of m issues from the gang at sri]

  okay, the following are three different attempts to extract a random
  tar file.  as you scan the listing, decide which is the correct
  behaviour. 
  
	----- mystery machine a -----
[wohler@coco0:882]% cat xlock.tar.Z | tar xpvf - 
x xlock/xlock.c, 6940 bytes, 14 tape blocks
x xlock/xlock.man, 1624 bytes, 4 tape blocks
x xlock/Imakefile, 159 bytes, 1 tape blocks
x xlock/Makefile, 412 bytes, 1 tape blocks
[wohler@coco0:882]% l xlock
total 11
-rw-rw-r--  1 wohler   istc          159 Apr 12 18:09 Imakefile
-rw-rw-r--  1 wohler   istc          412 Apr 12 18:09 Makefile
-rw-rw-r--  1 wohler   istc         6940 Apr 12 18:09 xlock.c
-rw-rw-r--  1 wohler   istc         1624 Apr 12 18:09 xlock.man

	---- mystery machine b -----
[wohler@cascades:130]$ zcat /milk/a/wohler/tmp/xlock.tar.Z | tar xvpf -
x xlock/xlock.c, 6940 bytes, 14 tape blocks
x xlock/xlock.man, 1624 bytes, 4 tape blocks
x xlock/Imakefile, 159 bytes, 1 tape blocks
x xlock/Makefile, 412 bytes, 1 tape blocks
[wohler@cascades:131]$ l xlock
total 22
-rw-rw-r--   1 32           159 May 27 00:36 Imakefile
-rw-rw-r--   1 32           412 May 27 00:36 Makefile
-rw-rw-r--   1 32          6940 May 27 00:36 xlock.c
-rw-rw-r--   1 32          1624 May 27 00:36 xlock.man

	----- mystery machine c -----
[wohler@coco0:887]% zcat ~/tmp/xlock.tar.Z |tar xvpf -
tar: can't create xlock/xlock.c: Permission denied
tar: can't create xlock/xlock.man: Permission denied
tar: can't create xlock/Imakefile: Permission denied
tar: can't create xlock/Makefile: Permission denied
tar: can't set time on xlock: Not owner
[wohler@coco0:888]% ls -lgd xlock
drwxrwxr-x  2 903      32             64 May 27 00:38 xlock/

  which one did you think was correct?

  i think machine a is correct since it restores the original date of
  the tar files.  since i'm not root it sets the ownership of the
  files to me.  if i extract a tar as me, i won't be able to edit the
  files if they are owned by some random joe.  in the worst case,
  machine c, i couldn't even extract the stuff because the directory
  had been set to the owner of the original tar file, and i sure can't
  write files in there!

  now the answers to today's quiz are:

	a: sun hardware, file on sun via nfs.
	b: hp hardware, file on hp disk.
	c: sun hardware, file on hp via nfs.

						--bw