X-Git-Url: https://git.jankratochvil.net/?a=blobdiff_plain;f=lptgpib.c;h=d854b65162aa514add9d24a2f51b372c3322ab51;hb=a5f79a5362f7a39266a4ba33abf76eec004cf805;hp=2a9f2445dfb4d0432bbb050466c0ceda97b58997;hpb=e5d37585de9699dbcf203ba49b5ff8a8e5c89ff8;p=lptgpib.git

diff --git a/lptgpib.c b/lptgpib.c
index 2a9f244..d854b65 100644
--- a/lptgpib.c
+++ b/lptgpib.c
@@ -11,7 +11,7 @@
 #include <sys/mman.h>
 #include <time.h>
 
-#define DEBUG 3 /* 4 - all, 3 - data, */
+#define DEBUG 4 /* 4 - all, 3 - data, */
 
 #if DEBUG > 3
 	#define DBG_low(...) { fprintf(stderr,__VA_ARGS__); fflush(stderr); }
@@ -84,7 +84,10 @@ void sig_handler(int sig){
 
 void lptgpib_init(int base){
         lpt_base = base;
-        ioperm(lpt_base, 4, 1);
+        if (ioperm(lpt_base, 4, 1) != 0) {
+	  fprintf(stderr,"Nejsou prava na port - musis byt root: %m\n");
+	  exit(1);
+	}
         
 	/* set realtime priority and lock us in memory */
 	struct sched_param scp;