[Bug-tar] [PATCH] sparse: fix bug in decode_header

[Pavel Raiskup]

List the archives containing sparse files of >8GB (real) data
correctly (print correct real size) and do not fail.

Reproducer (just as an example, this could take too long):

    $ dd if=/dev/urandom of=bigfile bs=512M  count=17 seek=1
    $ tar --posix -cSf archive bigfile
    $ echo $?
    0
    $ tar -tf archive
    bigfile
    tar: Skipping to next header
    tar: Exiting with failure status due to previous errors

Or just archive such file with --verify/-W:

    $ tar --posix -cWSf archive bigfile
    bigfile: Size differs
    tar: VERIFY FAILURE: 16842752 invalid headers detected
    tar: Exiting with failure status due to previous errors

Original bugreport thread:
http://www.mail-archive.com/bug-tar%40gnu.org/msg03905.html

Pavel

0001-sparse-fix-bug-in-decode_header.patch
Description: Text Data

testsuite.log.xz
Description: application/xz