Re: bin/38066: tar doesn't dearchive correctly long symlinks

[christos%zoulas.com@localhost (Christos Zoulas)]

On Feb 19,  4:35pm, kefren%ngnetworks.ro@localhost 
(kefren%ngnetworks.ro@localhost) wrote:
-- Subject: bin/38066: tar doesn't dearchive correctly long symlinks

| >Number:         38066
| >Category:       bin
| >Synopsis:       tar doesn't dearchive correctly long symlinks
| >Confidential:   no
| >Severity:       non-critical
| >Priority:       medium
| >Responsible:    bin-bug-people
| >State:          open
| >Class:          sw-bug
| >Submitter-Id:   net
| >Arrival-Date:   Tue Feb 19 16:35:00 +0000 2008
| >Originator:     Mihai Chelaru
| >Release:        NetBSD 4.0_RC1
| >Organization:
|       
| >Environment:
|       
|       
| System: NetBSD pr1.girsa.ro 4.0_RC1 NetBSD 4.0_RC1 (Kefren.MPACPI) #2: Sun 
Sep 2 19:50:00 EEST 2007 
root%pr1.girsa.ro@localhost:/usr/src-40/sys/arch/i386/compile/obj/Kefren.MPACPI 
i386
| Architecture: i386
| Machine: i386
| >Description:
|       
|       tar/pax doesn't dearchive correctly long symlinks from a pax_restricted 
archive type
|       like the ones pkg_create builds. gtar and bsdtar work correctly.
| 
| pr1# tar vft mono-1.2.6.tar | grep 
1.0/System.Runtime.Serialization.Formatters.Soap.dll 
| lrwxr-xr-x  1 root     wheel          0 Feb 19 16:55 
lib/mono/1.0/System.Runtime.Serialization.Formatters.Soap.dll -> 
././@LongSymLink
| pr1# gtar vft mono-1.2.6.tar | grep 
1.0/System.Runtime.Serialization.Formatters.Soap.dll
| lrwxr-xr-x root/wheel        0 2008-02-19 16:55:44 
lib/mono/1.0/System.Runtime.Serialization.Formatters.Soap.dll -> 
../gac/System.Runtime.Serialization.Formatters.Soap/1.0.5000.0__b03f5f7f11d50a3a/System.Runtime.Serialization.Formatters.Soap.dll
| pr1# bsdtar vft mono-1.2.6.tar | grep 
1.0/System.Runtime.Serialization.Formatters.Soap.dll
| lrwxr-xr-x  1 root   wheel       0 Feb 19 16:55 
lib/mono/1.0/System.Runtime.Serialization.Formatters.Soap.dll -> 
../gac/System.Runtime.Serialization.Formatters.Soap/1.0.5000.0__b03f5f7f11d50a3a/System.Runtime.Serialization.Formatters.Soap.dll
 
| pr1# file mono-1.2.6.tar                                                      
                                   
| mono-1.2.6.tar: POSIX tar archive

This is not a bug. Whatever pkg_create builds:
1. Should be marked as a GNU tar archive not as a POSIX one.
   POSIX tar archives don't have ././@LongLink extensions.
2. The extension string is "././@LongLink" not "././@LongSymLink". pax
   checks for the exact name, others might check for "././@Long" or something
   that is why they work.

christos