francois b03406af9d tahoe_backup.py: display warnings on errors instead of stopping the whole backup. Fix #729.
This patch displays a warning to the user in two cases:
  
  1. When special files like symlinks, fifos, devices, etc. are found in the
     local source.
  
  2. If files or directories are not readables by the user running the 'tahoe
     backup' command.

In verbose mode, the number of skipped files and directories is printed at the
end of the backup.

Exit status returned by 'tahoe backup':

  - 0 everything went fine
  - 1 the backup failed
  - 2 files were skipped during the backup
2010-01-20 01:42:49 -08:00
2009-02-11 11:19:35 -07:00

Welcome to the Tahoe project [1], a secure, decentralized,
fault-tolerant filesystem.  All of the source code is available under
a Free Software, Open Source licence (or two).

Please see docs/about.html for an introduction, docs/install.html for
install instructions, docs/running.html for usage instructions.

Finally, see docs/known_issues.txt for things that you need to know
about if you are relying on Tahoe to store your valuable data.

[1] http://allmydata.org
Description
The Tahoe-LAFS decentralized secure filesystem.
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