[Bug-tar] [Fwd: Bug#463251: tar: --transform does not apply to symlink targets when creating or listing]

[Bdale Garbee]

One of the users of my Debian tar packages reports that --transform only
works on symlinks during extraction, not on creation or listing.  A
quick review of the info doc didn't suggest any reason for that to be
intentional?

Bdale

> --- Begin Message ---
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> Subject: 
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> Bug#463251: tar: --transform does not apply to symlink targets	when creating or listing
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> Date: 
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> Wed, 30 Jan 2008 15:36:13 +0000
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> Package: tar
> Version: 1.19-1
> Severity: normal
>
> tar's --transform option seems to apply to symlink targets when
> extracting an archive, but not when creating or listing one. (I
> haven't checked other operations.)
>
>
> # Create an archive with a symlink in
>
> $ mkdir d
> $ cd d
> $ touch foo
> $ ln -s foo bar
> $ cd ..
> $ ls -l d
> total 0
> lrwxrwxrwx 1 timb software 3 Jan 30 15:05 bar -> foo
> -rw-rw-r-- 1 timb software 0 Jan 30 15:05 foo
> $ tar cf d.tar d
> $ tar tvf d.tar
> drwxrwsr-x timb/software     0 2008-01-30 15:05 d/
> -rw-rw-r-- timb/software     0 2008-01-30 15:05 d/foo
> lrwxrwxrwx timb/software     0 2008-01-30 15:05 d/bar -> foo
>
> # Listing with --transform doesn't transform the symlink target
>
> $ tar tvf d.tar --transform=s/foo/quux/ --show-transformed-names
> drwxrwsr-x timb/software     0 2008-01-30 15:05 d
> -rw-rw-r-- timb/software     0 2008-01-30 15:05 d/quux
> lrwxrwxrwx timb/software     0 2008-01-30 15:05 d/bar -> foo
>
> # Extracting appears not to ...
>
> $ rm -r d
> $ tar xvvf d.tar --transform=s/foo/quux/ --show-transformed-names
> drwxrwsr-x timb/software     0 2008-01-30 15:05 d
> -rw-rw-r-- timb/software     0 2008-01-30 15:05 d/quux
> lrwxrwxrwx timb/software     0 2008-01-30 15:05 d/bar -> foo
>
> # ... but really does
>
> $ ls -l d
> total 0
> lrwxrwxrwx 1 timb software 4 Jan 30 15:06 bar -> quux
> -rw-rw-r-- 1 timb software 0 Jan 30 15:05 quux
>
> # Restore the original and this time create with --transform
>
> $ rm -r d
> $ tar xf d.tar
> $ ls -l d
> total 0
> lrwxrwxrwx 1 timb software 3 Jan 30 15:06 bar -> foo
> -rw-rw-r-- 1 timb software 0 Jan 30 15:05 foo
> $ tar cvvf d.tar d --transform=s/foo/quux/ --show-transformed-names
> drwxrwsr-x timb/software     0 2008-01-30 15:05 d/
> -rw-rw-r-- timb/software     0 2008-01-30 15:05 d/quux
> lrwxrwxrwx timb/software     0 2008-01-30 15:06 d/bar -> foo
>
> # This time it looks broken because it really is
>
> $ tar tvf d.tar
> drwxrwsr-x timb/software     0 2008-01-30 15:05 d/
> -rw-rw-r-- timb/software     0 2008-01-30 15:05 d/quux
> lrwxrwxrwx timb/software     0 2008-01-30 15:06 d/bar -> foo
>
>
> -- System Information:
> Debian Release: 4.0
>   APT prefers stable
>   APT policy: (990, 'stable'), (50, 'unstable'), (50, 'testing')
> Architecture: amd64 (x86_64)
> Shell:  /bin/sh linked to /bin/bash
> Kernel: Linux 2.6.22-3-amd64
> Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
>
> Versions of packages tar depends on:
> ii  libc6                         2.7-6      GNU C Library: Shared libraries
>
> tar recommends no packages.
>
> -- no debconf information
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> --- End Message ---