Get blktochr() from sun3/sun3/conf.c

diff --git a/sys/arch/mac68k/mac68k/conf.c b/sys/arch/mac68k/mac68k/conf.c
index 765445f..ea33b3d 100644 (file)
--- a/sys/arch/mac68k/mac68k/conf.c
+++ b/sys/arch/mac68k/mac68k/conf.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: conf.c,v 1.12 1996/11/11 22:55:57 kstailey Exp $      */
+/*     $OpenBSD: conf.c,v 1.13 1997/01/01 15:54:21 briggs Exp $        */
 /*     $NetBSD: conf.c,v 1.34 1996/06/19 02:20:54 briggs Exp $ */
 
 /*
@@ -250,6 +250,24 @@ chrtoblk(dev)
        return (makedev(blkmaj, minor(dev)));
 }
 
+/*
+ * Convert a character device number to a block device number.
+ */
+dev_t
+blktochr(dev)
+       dev_t dev;
+{
+       int blkmaj = major(dev);
+       int i;
+
+       if (blkmaj >= nblkdev)
+               return (NODEV);
+       for (i = 0; i < sizeof(chrtoblktab)/sizeof(chrtoblktab[0]); i++)
+               if (blkmaj == chrtoblktab[i])
+                       return (makedev(i, minor(dev)));
+       return (NODEV);
+}
+
 #define itecnpollc     nullcnpollc
 cons_decl(ite);
 #define zscnpollc      nullcnpollc