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*** Description of problem: Cpio behaves differently in RHEL5 and RHEL6. *** Version-Release number of selected component (if applicable): # cpio --version cpio (GNU cpio) 2.10 *** How reproducible: See the steps below... *** Steps to Reproduce: 1) mkdir -v /test 2) touch /test/{1,2,3} 3) find /test -print | cpio -ovc > /tmp/test.cpio 4) cpio -itvc < /tmp/test.cpio drwxr-xr-x 2 root root 0 Oct 12 11:34 /test -rw-r--r-- 1 root root 0 Oct 12 11:34 /test/2 -rw-r--r-- 1 root root 0 Oct 12 11:34 /test/3 -rw-r--r-- 1 root root 0 Oct 12 11:34 /test/1 5) mkdir -v /test2 6) cd /test2 7) cpio -ivcdm < /tmp/test.cpio /test cpio: /test/2 not created: newer or same age version exists /test/2 cpio: /test/3 not created: newer or same age version exists /test/3 cpio: /test/1 not created: newer or same age version exists /test/1 2 blocks 8) ls -l total 0 *** Actual results: See the differences between RHEL5 and RHEL6 in these steps: * RHEL5 (working wine): 4) cpio -itvc < /tmp/test.cpio cpio: Removing leading `/' from member names drwxr-xr-x 2 root root 0 Oct 12 11:17 test cpio: Removing leading `/' from member names -rw-r--r-- 1 root root 0 Oct 12 11:17 test/1 cpio: Removing leading `/' from member names -rw-r--r-- 1 root root 0 Oct 12 11:17 test/3 cpio: Removing leading `/' from member names -rw-r--r-- 1 root root 0 Oct 12 11:17 test/2 2 blocks 7) cpio -ivcdm < /tmp/test.cpio cpio -ivcdm < /tmp/test.cpio cpio: Removing leading `/' from member names test cpio: Removing leading `/' from member names test/1 cpio: Removing leading `/' from member names test/3 cpio: Removing leading `/' from member names test/2 2 blocks 8) ls -l total 8 drwxr-xr-x 2 root root 4096 Oct 12 11:43 test See the "bad" results in the same steps in RHEL6: 4) cpio -itvc < /tmp/test.cpio cpio -itvc < /tmp/test.cpio drwxr-xr-x 2 root root 0 Oct 12 11:34 /test -rw-r--r-- 1 root root 0 Oct 12 11:34 /test/2 -rw-r--r-- 1 root root 0 Oct 12 11:34 /test/3 -rw-r--r-- 1 root root 0 Oct 12 11:34 /test/1 2 blocks #-> See the '/' in front of every directory 7) cpio -ivcdm < /tmp/test.cpio /test cpio: /test/2 not created: newer or same age version exists /test/2 cpio: /test/3 not created: newer or same age version exists /test/3 cpio: /test/1 not created: newer or same age version exists /test/1 2 blocks 8) ls -l total 0 *** Expected results: Both examples should give the same results (it should be the same as in RHEL5) Additional info: Looks like there are some differences between cpio version 2.6 and 2.10.
This request was evaluated by Red Hat Product Management for inclusion in the current release of Red Hat Enterprise Linux. Because the affected component is not scheduled to be updated in the current release, Red Hat is unfortunately unable to address this request at this time. Red Hat invites you to ask your support representative to propose this request, if appropriate and relevant, in the next release of Red Hat Enterprise Linux. If you would like it considered as an exception in the current release, please ask your support representative.
It's quite common that the behaviour changes between the major versions of RHEL ... you could get the "/" stripping in 2.10 if you use --no-absolute-filenames cpio option. In RHEL-5, the default upstream behaviour was changed by cpio-2.6-dirTraversal.patch - see https://bugzilla.redhat.com/show_bug.cgi?id=156314 . Upstream fixed the CAN-2005-1229 different way - and didn't changed the defaults - see thread in http://lists.gnu.org/archive/html/bug-cpio/2005-09/msg00006.html . In fact - just the default changed - in RHEL-5 the default value was declared as int abs_paths_flag = false; , in RHEL-6 there is int no_abs_paths_flag = false; Changing the defaults to probably more secure --no-absolute-filenames would mean divergency from upstream - so I would prefer to keep it as it is... closing NOTABUG.