diff -urp nmap-4.20.orig/nmap.cc nmap-4.20/nmap.cc

--- nmap-4.20.orig/nmap.cc	2006-10-14 06:03:54 +0000

+++ nmap-4.20/nmap.cc	2007-10-07 09:25:46 +0000

@@ -2262,23 +2262,16 @@ void sigdie(int signo) {

   exit(1);

 }

-#ifdef WIN32

-#define STAT_READABLE(st) st.st_mode & S_IREAD

-#else

-#define STAT_READABLE(st) st.st_mode & S_IRUSR

-#endif

-

-/* Returns true (nonzero) if the file pathname given exists, is not

- * a directory and is readable by the executing process.  Returns

+/* Returns true (nonzero) if the file pathname given exists, is a

+ * regular file, and is readable by the executing process.  Returns

  * zero if it is not

  */

 static int fileexistsandisreadable(char *pathname) {

   struct stat st;

-  if (stat(pathname, &st) == -1)

-    return 0;

-

-  if (!S_ISDIR(st.st_mode) && STAT_READABLE(st))

+  if (access(pathname, R_OK) == 0 &&

+      stat(pathname, &st) == 0 &&

+      S_ISREG(st.st_mode))

     return 1;

   return 0;