Re: [Bug-tar] error handling and exit code (patch for tar-1.20/1.21)

[Sergey Poznyakoff]

Hello Alexander,

Current git master implements the functionality proposed by your
posting on 2009-03-29.  It is partially based on your patch.

The new behavior is as follows:

If a file or directory is removed while incremental dump is
in progress, tar exact actions depend on whether this file
was explicitly listed in the command line, or was gathered
during the file system scan.

If the file was explicitly listed in the command line, tar
issues error message and exits with the code 2, which means
fatal error.

Otherwise, if the file was gathered during the file system
scan, tar issues a warning, saying "File removed before we read it",
and sets the exit code to 1, which means "some files differ".
Additionally, if the --warning=no-file-removed option is given, no
warning is issued and exit code remains 0.

Would you please test it and inform me if it needs any further
improvements?

Thank you.

--
Sergey