Make dev_t 32-bits and provide backwards compatibility

include/minix/types.h

@@ -98,7 +98,7 @@ typedef long key_t;
 /* Open Group Base Specifications Issue 6 (not complete) */
 typedef long useconds_t;	/* Time in microseconds */
 
-typedef short          dev_t;	   /* holds (major|minor) device pair */
+typedef u32_t          dev_t;	   /* holds (major|minor) device pair */
 typedef u32_t          big_dev_t;
 
 /* Types used in disk, inode, etc. data structures.

include/net/ioctl.h

@@ -73,6 +73,7 @@ struct msg_control
 #define NWIOSUDSBLOG	_IOW ('n', 73, int)		   /* listen() */
 #define NWIOSUDSCONN	_IOW ('n', 74, struct sockaddr_un) /* connect() */
 #define NWIOSUDSSHUT    _IOW ('n', 75, int)		  /* shutdown() */
+#define NWIOSUDSPAIROLD	_IOW ('n', 76, short)		  /* socketpair() */
 #define NWIOSUDSPAIR	_IOW ('n', 76, dev_t)		  /* socketpair() */
 #define NWIOSUDSACCEPT	_IOW ('n', 77, struct sockaddr_un) /* accept() */
 #define NWIOSUDSCTRL	_IOW ('n', 78, struct msg_control) /* sendmsg() */

include/sys/stat.h

@@ -47,13 +47,13 @@ struct stat {
 
 
 struct minix_prev_stat {
-  dev_t st_dev;			/* major/minor device number */
+  short st_dev;			/* major/minor device number */
   ino_t st_ino;			/* i-node number */
   mode_t st_mode;		/* file mode, protection bits, etc. */
   nlink_t st_nlink;		/* # links; */
   uid_t st_uid;			/* uid of the file's owner */
   short int st_gid;		/* gid; TEMPORARY HACK: should be gid_t */
-  dev_t st_rdev;
+  short st_rdev;
   off_t st_size;		/* file size */
   time_t st_atime;		/* time of last access */
   time_t st_mtime;		/* time of last data modification */