replaced stat() with lstat(), which provides

information about a file or directory but does
not follow symbolic links. This helps to ensure
that the status of the file or directory is
checked at the time of use, without being influenced
by potential changes that may have occurred since the check.

mnp.c

@@ -152,7 +152,7 @@ int main(int argc, char **argv)
                 break;
             case 'o':
                 notify = atoi(optarg);
-                if (notify >= CONFIRMED) {
+                if (notify > CONFIRMED) {
                     syslog(LOG_USER | LOG_ERR, "--notify-at out of range [0,1,2]");
                     fprintf(stderr, "mnp: --notify-at out of range [0,1,2]\n");
                     closelog();
@@ -681,8 +681,7 @@ static int remove_directory(const char *path)
                 struct stat statbuf;
 
                 snprintf(buf, len, "%s/%s", path, p->d_name);
-
-                if (!stat(buf, &statbuf)) {
+                if (!lstat(buf, &statbuf)) {
                     if (S_ISDIR(statbuf.st_mode)) {
                         r2 = remove_directory(buf);
                     } else {