It like we may have a bug in tar that ships with Centos.
It looks like -o is mapped to --same-owner.
Some basic info....
uname -a
Linux jazzy 2.6.9-34.0.1.ELsmp #1 SMP Wed May 24 08:14:29 CDT 2006
i686 i686 i386 GNU/Linux
cat /etc/redhat-release
CentOS release 4.3 (Final)
% /bin/tar --version
tar (GNU tar) 1.14
--same-owner try extracting files with the same ownership
--no-same-owner extract files as yourself
Compatibility options:
-o when creating, same as --old-archive
when extracting, same as --no-same-owner
and Now a test!
#goto tmp dir
cd /tmp
#become root
su - root
#create three test files
touch afile bfile cfile
#verify ownership
ls -l
total 0
-rw-r--r-- 1 root root 0 Jun 26 11:16 afile
-rw-r--r-- 1 root root 0 Jun 26 11:16 bfile
-rw-r--r-- 1 root root 0 Jun 26 11:16 cfile
#create a tar archive
tar zcvf testoh.tgz afile bfile cfil
#become regular user
tar -zxof testoh.tgz
tar: afile: Cannot change ownership to uid 0, gid 0: Operation not ermitted
tar: bfile: Cannot change ownership to uid 0, gid 0: Operation not ermitted
tar: cfile: Cannot change ownership to uid 0, gid 0: Operation not ermitted
tar: Error exit delayed from previous errors
This error should not happen!
tar --no-same-owner -zxf testoh.tgz
jazzy 328 % ls -l
total 4
-rw------- 1 paulg tech 0 Jun 26 11:16 afile
-rw------- 1 paulg tech 0 Jun 26 11:16 bfile
-rw------- 1 paulg tech 0 Jun 26 11:16 cfile
-rw-r--r-- 1 root root 125 Jun 26 11:17 testoh.tgz
This works but according to the manpages -o should also work!
It looks like -o is mapped to --same-owner
jazzy 329 % tar --same-owner -zxf testoh.tgz
tar: afile: Cannot change ownership to uid 0, gid 0: Operation not ermitted
tar: bfile: Cannot change ownership to uid 0, gid 0: Operation not ermitted
tar: cfile: Cannot change ownership to uid 0, gid 0: Operation not ermitted
tar: Error exit delayed from previous errors
Thanks
Paul