2004-01-17 Yoshinori K. Okuji <okuji@enbug.org>

* lib/device.c [__linux__] (MAJOR): Support 32 bit and 64 bit
	dev_t. This code is stolen from glibc.
	Suggested by Shen Feng <shen@nanjing-fnst.com>.

ChangeLog

@@ -1,3 +1,9 @@
+2004-01-17  Yoshinori K. Okuji  <okuji@enbug.org>
+
+	* lib/device.c [__linux__] (MAJOR): Support 32 bit and 64 bit
+	dev_t. This code is stolen from glibc.
+	Suggested by Shen Feng <shen@nanjing-fnst.com>.
+
 2004-01-11  Yoshinori K. Okuji  <okuji@enbug.org>
 
 	* stage2/terminfo.c (ti_set_term): Use a pointer to struct

NEWS

@@ -9,6 +9,7 @@ New:
 * Display "GNU GRUB" instead of "GRUB" in the menu.
 * Add support for QNX RTP into the grub shell.
 * Add support for the initrd max address of a kernel header in Linux.
+* Support 32 bit and 64 bit dev_t.
 
 New in 0.93 - 2002-12-08:
 * Define the behavior of the boot loader when the load end address is

lib/device.c

@@ -59,10 +59,12 @@ struct hd_geometry
 #  define FLOPPY_MAJOR	2	/* the major number for floppy */
 # endif /* ! FLOPPY_MAJOR */
 # ifndef MAJOR
-#  ifndef MINORBITS
-#   define MINORBITS	8
-#  endif /* ! MINORBITS */
-#  define MAJOR(dev)	((unsigned int) ((dev) >> MINORBITS))
+#  define MAJOR(dev)	\
+  ({ \
+     unsigned long long __dev = (dev); \
+     (unsigned) ((__dev >> 8) & 0xfff) \
+                 | ((unsigned int) (__dev >> 32) & ~0xfff); \
+  })
 # endif /* ! MAJOR */
 # ifndef CDROM_GET_CAPABILITY
 #  define CDROM_GET_CAPABILITY	0x5331	/* get capabilities */