diff --git a/include/limits.h b/include/limits.h
index 60503af3f..3baa81d0e 100644
--- a/include/limits.h
+++ b/include/limits.h
@@ -99,6 +99,7 @@
 #define STREAM_MAX          20	/* must be the same as FOPEN_MAX in stdio.h */
 #define TZNAME_MAX           3	/* maximum bytes in a time zone name is 3 */
 #define SSIZE_MAX        32767	/* max defined byte count for read() */
+#define SIZE_MAX      UINT_MAX
 #define SYMLINK_MAX       1024 	/* # bytes in a symbolic link */ 
 #define SYMLOOP_MAX	    16	/* maximum number of symbolic links that can
 				 * be reliably traversed in the resolution of
diff --git a/include/minix/paths.h b/include/minix/paths.h
index 900c7e45f..e20e5e9de 100644
--- a/include/minix/paths.h
+++ b/include/minix/paths.h
@@ -14,7 +14,9 @@
 
 #define    _PATH_DEFTAPE   "/dev/sa0"
 #define    _PATH_RAMDISK   "/dev/ram"
+#define    _PATH_TTY       "/dev/tty"
 #define    _PATH_TMP       "/tmp"
+#define    _PATH_DEVNULL   "/dev/null"
 
 #define _PATH_BSHELL	"/bin/sh"
 #define _PATH_SERVICE	"/bin/service"
diff --git a/include/minix/types.h b/include/minix/types.h
index 65c1173e4..dd325d662 100644
--- a/include/minix/types.h
+++ b/include/minix/types.h
@@ -103,6 +103,7 @@ typedef short          uid_t;	   /* user id */
 
 /* Signal handler type, e.g. SIG_IGN */
 typedef void _PROTOTYPE( (*sighandler_t), (int) );
+typedef sighandler_t sig_t;
 
 /* Compatibility with other systems */
 typedef unsigned char	u_char;
diff --git a/include/sys/stat.h b/include/sys/stat.h
index 0f65f88a2..ea3fba762 100644
--- a/include/sys/stat.h
+++ b/include/sys/stat.h
@@ -65,6 +65,8 @@ struct stat {
 #define S_ISLNK(m)	(((m) & S_IFMT) == S_IFLNK)	/* is a symlink */
 #define S_ISFIFO(m)	(((m) & S_IFMT) == S_IFIFO)	/* is a pipe/FIFO */
 
+#define DEFFILEMODE     (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+
 /* Function Prototypes. */
 _PROTOTYPE( int chmod, (const char *_path, mode_t _mode)		);
 _PROTOTYPE( int fchmod, (int fd, mode_t _mode)			);