GRASS Programmer's Manual
6.4.2(2012)
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00001 /* quiet mode returns: 0 - open OK */ 00002 /* -1 - driver locked */ 00003 /* -2 - driver not running */ 00004 /* -3 - can't open fifos */ 00005 /* -4 - no such monitor */ 00006 /* -5 - GIS_LOCK undefined in shell environment */ 00007 /* -6 - couldn't read, write or create lock file */ 00008 00009 #define OK 0 00010 #define LOCKED -1 00011 #define NO_RUN -2 00012 #define NO_OPEN -3 00013 #define NO_MON -4 00014 #define NO_KEY -5 00015 #define LOCK_FAILED -6