#define lstat xemacs_stat
#endif
-#if !S_IRUSR
+#ifndef S_IRUSR
# if S_IREAD
# define S_IRUSR S_IREAD
# else
# endif
#endif
-#if !S_IWUSR
+#ifndef S_IWUSR
# if S_IWRITE
# define S_IWUSR S_IWRITE
# else
# endif
#endif
-#if !S_IXUSR
+#ifndef S_IXUSR
# if S_IEXEC
# define S_IXUSR S_IEXEC
# else