Add necessary awk magic to create a table of major numbers allocated

in conf/majors so we can avoid autoallocating them in the kernel.

sys/conf/kern.post.mk

@@ -72,7 +72,7 @@ tlphy.o xmphy.o: miidevs.h
 kernel-clean:
 	rm -f *.o *.so *.So *.ko *.s eddep errs \
 	      ${FULLKERNEL} ${KERNEL_KO} linterrs makelinks tags \
-	      vers.c vnode_if.c vnode_if.h \
+	      vers.c vnode_if.c vnode_if.h majors.c \
 	      ${MFILES:T:S/.m$/.c/} ${MFILES:T:S/.m$/.h/} \
 	      ${CLEAN}
 
@@ -215,4 +215,10 @@ vnode_if.h: $S/tools/vnode_if.awk $S/kern/vnode_if.src
 vnode_if.o:
 	${NORMAL_C}
 
+majors.c: $S/conf/majors $S/conf/majors.awk
+	${AWK} -f $S/conf/majors.awk $S/conf/majors > majors.c
+
+majors.o:
+	${NORMAL_C}
+
 .include <bsd.kern.mk>

sys/conf/kern.pre.mk

@@ -67,6 +67,7 @@ SYSTEM_CFILES= vnode_if.c hints.c env.c config.c
 SYSTEM_SFILES= $S/$M/$M/locore.s
 SYSTEM_DEP= Makefile ${SYSTEM_OBJS}
 SYSTEM_OBJS= locore.o vnode_if.o ${OBJS} hints.o env.o config.o hack.So
+SYSTEM_OBJS+= majors.o
 SYSTEM_LD= @${LD} ${FMT} -Bdynamic -T $S/conf/ldscript.$M \
 	-warn-common -export-dynamic -dynamic-linker /red/herring \
 	-o ${.TARGET} -X ${SYSTEM_OBJS} vers.o

sys/conf/majors.awk

@@ -0,0 +1,21 @@
+# $FreeBSD$
+/^#/	{ next }
+NF == 1 { next }
+$2 == "??" { next }
+$2 == "lkm" { next }
+	{
+	a[$1] = $1;
+	}
+END	{
+	print "unsigned char reserved_majors[256] = {"
+	for (i = 0; i < 256; i += 16) {
+		for (j = 0; j < 16; j++) {
+			printf("%3d", a[i + j]);
+			if (i + j != 255)
+				printf(",");
+		}
+		print ""
+	}
+	print "};"
+	}
+