Bug 239000

Summary: pax fails creation of ustar if an absolute name is exactly 100 characters long
Product: Red Hat Enterprise Linux 4 Reporter: Martin Poole <mpoole>
Component: paxAssignee: Ondrej Vasik <ovasik>
Status: CLOSED WONTFIX QA Contact: Ben Levenson <benl>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.5CC: tao
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 569323 (view as bug list) Environment:
Last Closed: 2010-03-19 12:17:22 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 239001    
Attachments:
Description Flags
tar file with absolute names of varying lengths to illustrate problem/test solution.
none
patch to fix absolute 100 char file issue none

Description Martin Poole 2007-05-04 12:21:06 UTC 
Description of problem:

If pax attempts to create a ustar format archive with absolute path names it
fails on paths that are exactly 100 characters long. Where the length is <100 or
101-254 it works.

Version-Release number of selected component (if applicable):

pax-3.0-9

How reproducible:

always

Steps to Reproduce:
1. unpack the attached tar with    tar -x -C / -f pax_abs_test.tar
2. pax -w -f /var/tmp/px.tar /var/tmp/pax_abs_test -x ustar
3.
  
Actual results:
pax: File name too long for ustar
/var/tmp/pax_abs_test/this_file_fails_because_the_absolute_filename_is_exactly__100__characters_long


Expected results:

no errors, complete tar.

Additional info:

The pax source contains a specific mention of the boundary condition where the
name is of the form /str and 100 characters long and errs on the side of
absolute posix adherence. What it fails to account for is when the name is of
the form /dir/str and the length is 100 characters. In this situation it would
be valid to perform the normal split procedure as long as the split is not at
the first character.
Comment 1 Martin Poole 2007-05-04 12:21:07 UTC 
Created attachment 154110 [details]
tar file with absolute names of varying lengths to illustrate problem/test solution.
Comment 2 Martin Poole 2007-05-04 12:23:21 UTC 
Created attachment 154111 [details]
patch to fix absolute 100 char file issue
Comment 3 RHEL Program Management 2008-02-01 19:08:29 UTC 
This request was evaluated by Red Hat Product Management for
inclusion, but this component is not scheduled to be updated in
the current Red Hat Enterprise Linux release. If you would like
this request to be reviewed for the next minor release, ask your
support representative to set the next rhel-x.y flag to "?".
Comment 6 Ondrej Vasik 2010-03-19 12:17:22 UTC 
As RHEL-4.9 is last update for RHEL-4 and it is not suitable for new features
and should address only security, performance and critical issues, I'm closing
that bugzilla WONTFIX. Problem is fixed in RHEL-5.