[Bug bzip2/25719] New: uncompress with soft and hard links

[guillaume.audirac at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=25719

            Bug ID: 25719
           Summary: uncompress with soft and hard links
           Product: bzip2
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: bzip2
          Assignee: nobody at sourceware dot org
          Reporter: guillaume.audirac at gmail dot com
                CC: bzip2-devel at sourceware dot org
  Target Milestone: ---

Hi,

I've got issues with bzip2 when using symbolic and hard links (quite useful for
Yocto generated images).
I'm using Linux Mint 19.3 and bzip2 version 1.0.6 (6-sept-2010). I know the
latest release is 1.0.8 but I could not find any related info in git log
history.

# I have a bz2 file and soft and hard links to it.
$ ln -s my_file.bz2 my_softlink
$ ln my_file.bz2 my_hardlink

# Then I try to uncompress it through the symbolic link
$ bzip2 -d my_softlink
bzip2: Input file my_softlink is not a normal file.

# Now I try to uncompress it using the hard link
$ bzip2 -d my_hardlink
bzip2: Can't guess original name for my_hardlink -- using my_hardlink.out
bzip2: Input file my_hardlink has 1 other link.

For the 2 cases, using the -k option does not help.
For soft links, it would be nice to allow to follow the symlink with another
option, while keeping the input file ('-k').
For hard links, I assume it should work with '-k' when uncompressing.

Regards.

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