Hi,
I think 1.15.1's broken where 1.14 wasn't.
#! /bin/bash
set -ex
$TAR --version
rm -rf d d.orig db
mkdir d
>d/foo
ln -s 1.2.3.4:80 d/lock
find d -ls
$TAR -cvf d.l0.tar -g db d
rm d/lock
$TAR -cvf d.l1.tar -g db d
mv d d.orig
$TAR -xvf d.l0.tar -g /dev/null
$TAR -xvf d.l1.tar -g /dev/null || :
diff -r d.orig d || :
Here's the output of running the above script on the two versions of tar
I have to hand.
$ TAR=/bin/tar ./bug
+ /bin/tar --version
tar (GNU tar) 1.14
Copyright (C) 2004 Free Software Foundation, Inc.
This program comes with NO WARRANTY, to the extent permitted by law.
You may redistribute it under the terms of the GNU General Public License;
see the file named COPYING for details.
Written by John Gilmore and Jay Fenlason.
+ rm -rf d d.orig db
+ mkdir d
+ ln -s 1.2.3.4:80 d/lock
+ find d -ls
1291938 4 drwxr-xr-x 2 ralph ralph 4096 Aug 21 17:29 d
1291939 0 -rw-r--r-- 1 ralph ralph 0 Aug 21 17:29 d/foo
1291944 0 lrwxrwxrwx 1 ralph ralph 10 Aug 21 17:29 d/lock
-> 1.2.3.4:80
+ /bin/tar -cvf d.l0.tar -g db d
d/
d/foo
d/lock
+ rm d/lock
+ /bin/tar -cvf d.l1.tar -g db d
d/
d/foo
+ mv d d.orig
+ /bin/tar -xvf d.l0.tar -g /dev/null
d/
d/foo
d/lock
+ /bin/tar -xvf d.l1.tar -g /dev/null
d/
/bin/tar: Deleting `d/lock'
d/foo
+ diff -r d.orig d
$
All OK.
$ TAR=~/src/tar/tar-1.15.1/src/tar ./bug
+ /home/ralph/src/tar/tar-1.15.1/src/tar --version
tar (GNU tar) 1.15.1
+ rm -rf d d.orig db
+ mkdir d
+ ln -s 1.2.3.4:80 d/lock
+ find d -ls
1291938 4 drwxr-xr-x 2 ralph ralph 4096 Aug 21 17:29 d
1291939 0 -rw-r--r-- 1 ralph ralph 0 Aug 21 17:29 d/foo
1291944 0 lrwxrwxrwx 1 ralph ralph 10 Aug 21 17:29 d/lock
-> 1.2.3.4:80
+ /home/ralph/src/tar/tar-1.15.1/src/tar -cvf d.l0.tar -g db d
d/
d/foo
d/lock
+ rm d/lock
+ /home/ralph/src/tar/tar-1.15.1/src/tar -cvf d.l1.tar -g db d
d/
d/foo
+ mv d d.orig
+ /home/ralph/src/tar/tar-1.15.1/src/tar -xvf d.l0.tar -g /dev/null
d/
d/foo
d/lock
+ /home/ralph/src/tar/tar-1.15.1/src/tar -xvf d.l1.tar -g /dev/null
d/
/home/ralph/src/tar/tar-1.15.1/src/tar: d/lock: Cannot stat: No such file
or directory
/home/ralph/src/tar/tar-1.15.1/src/tar: d/lock: Not purging directory:
unable to stat
d/foo
/home/ralph/src/tar/tar-1.15.1/src/tar: Error exit delayed from previous
errors
+ :
+ diff -r d.orig d
Only in d: lock
+ :
$
1.15.1 is trying to stat d/lock when it knows it's a symlink and there's
no reason why the symlink's destination should exist. diff shows that
d/lock has been left behind so my restore of my incremental backups is
incorrect.
Cheers,
Ralph.
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