Problem with dev nodes in tar extract

Eric Blake
Fri Feb 29 13:51:00 GMT 2008

Hash: SHA1

According to Nigel Hathaway on 2/29/2008 4:36 AM:
| I have created a gzipped compressed tar archive on Linux of an embedded
| Linux file system. It was compressed under Linux using fakeroot (so that
| everything is owned as root and dev nodes work).

Dev nodes are OS specific.  You will probably never get this to work,
because cygwin's notions of which major device numbers map to which
devices, while modeled after Linux, is not identical to Linux.  You are
trying to do something that is inherently non-portable.

| There error message I get is:
| 171 [main] tar 7900 _cygtls::handle_exceptions: Error while dumping
| state (probably corrupted stack)
| Segmentation fault (core dumped)

Obviously, it would be nicer if we didn't crash the cygwin syscall, but
this is not going to be my highest priority bug investigation.  Strace may
be helpful to you to find out what is going on just before the crash.  And
a simple, self-contained test case written in C will make it easier for
the cygwin development team to look into this, if it is really that
important to you (hint - pointing to tar's source code is not simple
enough for honing in on the cause of the crash).

- --
Don't work too hard, make some time for fun as well!

Eric Blake   
volunteer cygwin tar maintainer
Version: GnuPG v1.4.5 (Cygwin)
Comment: Public key at
Comment: Using GnuPG with Mozilla -


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