00001 #include <grass/gis.h> 00002 /* 00003 ********************************************************************** 00004 * 00005 * G_maskfd() 00006 * 00007 * Returns the file descriptor opened for the current mask 00008 * 00009 * returns: fd number if mask is in use 00010 * -1 if no mask is in use 00011 **********************************************************************/ 00012 00013 #include "G.h" 00014 /* 00015 * open mask file and return file descriptor 00016 */ 00017 00028 int G_maskfd () 00029 { 00030 G__check_for_auto_masking () ; 00031 00032 return G__.auto_mask > 0 ? G__.mask_fd : -1; 00033 }