Mercurial > hg > octave-nkf
diff libinterp/octave.cc @ 17570:1c7d768c3847
don't fork if there is no controlling tty
* configure.ac: Check for ctermid.
* octave.cc (octave_fork_gui): Check for controlling tty and return
false one is not found.
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Fri, 04 Oct 2013 16:10:22 -0400 |
| parents | 1b388d922e6b |
| children | c702371ff6df d63878346099 |
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--- a/libinterp/octave.cc +++ b/libinterp/octave.cc @@ -33,6 +33,7 @@ #include <iostream> +#include <fcntl.h> #include <getopt.h> #include <sys/types.h> #include <unistd.h> @@ -1085,7 +1086,21 @@ int octave_fork_gui (void) { - return ! no_fork_option; + bool have_ctty = false; + +#if ! (defined (__WIN32__) || defined (__APPLE__)) || defined (__CYGWIN__) + +#if defined (HAVE_CTERMID) + const char *ctty = ctermid (0); +#else + const char *ctty = "/dev/tty"; +#endif + + have_ctty = gnulib::open (ctty, O_RDWR, 0) > 0; + +#endif + + return (have_ctty && ! no_fork_option); } DEFUN (isguirunning, args, ,