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Author SHA1 Message Date
Marko Kohtala 51192feff8 isotptun: print command line parsing error messages to stderr 
Command line parsing error messages are printed to stdout. Other errors
and usage goes to stderr.

Change to print errors to stderr.

Signed-off-by: Marko Kohtala <marko.kohtala@gmail.com>
 2017-02-14 11:14:29 +02:00
Marko Kohtala 7eb005d9f3 isotptun: use EXIT_FAILURE instead of 0 (EXIT_SUCCESS) for errors 
Exit code does not tell if the service was provided or if it was not
provided due to command line or setup errors.

Change errors to return EXIT_FAILURE instead of 0. Also change other uses
of 0 to EXIT_SUCCESS and 1 to EXIT_FAILURE for clarity and POSIX
conformance.

Signed-off-by: Marko Kohtala <marko.kohtala@gmail.com>
 2017-02-14 11:12:51 +02:00