Start fs implementation for DragonFly BSD

c/fs_dragonfly.c

@@ -0,0 +1,13 @@
+#include <sys/types.h>
+
+#include <sys/sysctl.h>
+
+#include "fs.h"
+
+char *get_exename(char *buf, size_t size)
+{
+    int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
+
+    sysctl(mib, 4, buf, &size, 0, 0);
+    return buf;
+}