Use common's progname functions in ovnisync

This commit adds the progname_get function in common.h header and
extends the ovnisync tool to use them

src/common.c

@@ -18,6 +18,12 @@ progname_set(char *name)
 	progname = name;
 }
 
+const char *
+progname_get(void)
+{
+	return progname;
+}
+
 void
 enable_debug(void)
 {

src/common.h

@@ -11,6 +11,7 @@ extern int is_debug_enabled;
 /* Debug macros */
 
 void progname_set(char *name);
+const char *progname_get(void);
 void enable_debug(void);
 void verr(const char *prefix, const char *func, const char *errstr, ...);
 void vdie(const char *prefix, const char *func, const char *errstr, ...);

src/emu/ovnisync.c

@@ -11,10 +11,9 @@
 #include <sys/stat.h>
 #include <time.h>
 #include <unistd.h>
+#include "common.h"
 #include "ovni.h"
 
-const char progname[] = "ovnisync";
-
 struct offset {
 	/* All in nanoseconds */
 	double delta_mean;
@@ -441,6 +440,8 @@ do_work(struct options *options, int rank)
 int
 main(int argc, char *argv[])
 {
+	progname_set("ovnisync");
+
 	MPI_Init(&argc, &argv);
 
 	int rank;