makedev

早期freebsd实现

#!/bin/sh -
#
#	@(#)MAKEDEV	8.1 (Berkeley) 6/9/93
#

# Device "make" file.  Valid arguments:
#	std	standard devices
#	local	configuration specific devices
# Tapes:
#	cy*	Cipher
# Disks:
#	dk*	VDDC or SMDE disk on Versabus
#	hd*	VDDC or SMDE disk on VME
# Terminal multiplexors:
#	vx*	VIOC
#	mp*	MPCC
# Pseudo terminals:
#	pty*	set of 32 master and slave pseudo terminals
# Printers:
# Call units:
# Special purpose devices:
#	enp*	CMC Ethernet interface for loading RAM
#	dr*	IKON DR-11W
#	ik*	IKON DR-11W w/ E&S PS300
#
HOME=/; export HOME
PATH=/sbin:/bin:/usr/sbin:/usr/bin
export PATH

umask 77
for i
do
case $i in

std)
	mknod CP	c 0 0
	mknod console	c 0 1
	mknod remote	c 0 2
	mknod drum 	c 8 0	; chmod 640 drum ; chgrp kmem drum
	mknod mem	c 3 0	; chmod 640 mem ; chgrp kmem mem
	mknod kmem	c 3 1	; chmod 640 kmem ; chgrp kmem kmem
	mknod null	c 3 2	; chmod 666 null
	mknod vmem 	c 3 3	; chmod 640 vmem ; chgrp kmem vmem
	mknod zero      c 3 12  ; chmod 666 zero
	mknod tty	c 2 0	; chmod 666 tty
	mknod klog	c 15 0	; chmod 400 klog
	mknod stdin	c 21 0	; chmod 666 stdin
	mknod stdout	c 21 1	; chmod 666 stdout
	mknod stderr	c 21 2	; chmod 666 stderr
	mkdir fd > /dev/null 2>&1
	(cd fd && eval `echo "" | awk ' BEGIN { \
		for (i = 0; i < 64; i++) \
			printf("mknod %d c 21 %d;", i, i)}'`)
	chown -R bin.bin fd
	chmod 555 fd
	chmod 666 fd/*
	;;

cy*)
	umask 0 ; unit=`expr $i : '..\(.*\)'`
	case $i in
	cy*) blk=3; chr=7 ;;
	esac
	case $unit in
	0|1|2|3|4|5|6|7)
		four=`expr $unit + 4`
		eight=`expr $unit + 8`
		twelve=`expr $unit + 12`
#		twenty=`expr $unit + 20`
		mknod mt$unit		b $blk $unit
		mknod mt$four		b $blk $four
		mknod mt$eight		b $blk $eight
		mknod mt$twelve		b $blk $twelve
		ln mt$four nmt$unit		;: sanity
		ln mt$twelve nmt$eight		;: ditto
		mknod rmt$unit		c $chr $unit
		mknod rmt$four		c $chr $four
		mknod rmt$eight		c $chr $eight
		mknod rmt$twelve	c $chr $twelve
		ln rmt$four nrmt$unit		;: sanity
		ln rmt$twelve nrmt$eight	;: ditto
#		if [ $i = ut ] 
#		then
#			mknod mt$twenty	b $blk $twenty
#			mknod rmt$twenty	c $chr $twenty
#		fi
		umask 77
		;;
	*)
		echo bad unit for tape in: $1
		;;
	esac
	;;

hd*|dk*)
	unit=`expr $i : '..\(.*\)'`
	case $i in
	dk*) name=dk; blk=1; chr=5;;
	hd*) name=hd; blk=2; chr=6;;
	esac
	case $unit in
	0|1|2|3|4|5|6|7|8|9|a|b|c|d|e|f|g|h)
		case $unit in
		a) u=10 ;;
		b) u=11 ;;
		c) u=12 ;;
		d) u=13 ;;
		e) u=14 ;;
		f) u=15 ;;
		g) u=16 ;;
		h) u=17 ;;
		*) u=$unit ;;
		esac

		mknod ${name}${unit}a	b $blk `expr $u '*' 8 + 0`
		mknod ${name}${unit}b	b $blk `expr $u '*' 8 + 1`
		mknod ${name}${unit}c	b $blk `expr $u '*' 8 + 2`
		mknod ${name}${unit}d	b $blk `expr $u '*' 8 + 3`
		mknod ${name}${unit}e	b $blk `expr $u '*' 8 + 4`
		mknod ${name}${unit}f	b $blk `expr $u '*' 8 + 5`
		mknod ${name}${unit}g	b $blk `expr $u '*' 8 + 6`
		mknod ${name}${unit}h	b $blk `expr $u '*' 8 + 7`
		mknod r${name}${unit}a	c $chr `expr $u '*' 8 + 0`
		mknod r${name}${unit}b	c $chr `expr $u '*' 8 + 1`
		mknod r${name}${unit}c	c $chr `expr $u '*' 8 + 2`
		mknod r${name}${unit}d	c $chr `expr $u '*' 8 + 3`
		mknod r${name}${unit}e	c $chr `expr $u '*' 8 + 4`
		mknod r${name}${unit}f	c $chr `expr $u '*' 8 + 5`
		mknod r${name}${unit}g	c $chr `expr $u '*' 8 + 6`
		mknod r${name}${unit}h	c $chr `expr $u '*' 8 + 7`

		chmod 640 ${name}${unit}[a-h]
		chgrp operator ${name}${unit}[a-h]
		chmod 640 r${name}${unit}[a-h]
		chgrp operator r${name}${unit}[a-h]
		;;
	*)
		echo bad unit for disk in: $i
		;;
	esac
	;;

vx*|mp*)
	case $i in
	vx*)	name=vx; major=1; count=16;
		unit=`expr $i : "$name\(.*\)"`
		case $unit in
		0|1|2|3|4|5|6|7|8|9|a|b|c|d|e|f) ch=$unit ;;
		*) echo bad unit for $name in: $i ;;
		esac
		;;
	mp*)	name=mp; major=12; count=16;
		unit=`expr $i : "$name\(.*\)"`
		case $unit in
		0) ch=A ;; 1) ch=B ;; 2) ch=C ;; 3) ch=D ;;
		4) ch=E ;; 5) ch=F ;; 6) ch=G ;; 7) ch=H ;;
		8) ch=I ;; 9) ch=J ;; a) ch=K ;; b) ch=L ;;
		c) ch=M ;; d) ch=N ;; e) ch=O ;; f) ch=P ;;
		*) echo bad unit for $name in: $i ;;
		esac
		;;
	esac

	case $unit in
	a) un=10 ;; b) un=11 ;; c) un=12 ;; d) un=13 ;;
	e) un=14 ;; f) un=15 ;; *) un=$unit ;;
	esac

	umask 044
	eval `echo $ch $major $count $un |
	  awk ' { ch = $1; u = $3 * $4; m = $2; cnt = $3; nd = $4 } END {
	    if (m == 12)
	        printf("mknod mpcc%d c 11 %d; /bin/chmod 0600 mpcc%d; ",nd,u,nd);
	    for (i = 0; i < cnt; i++)
	      if (i < 10)
		printf("mknod tty%s%x c %d %d; ",ch,i,m,u+i);
	      else
		printf("mknod tty%s%c c %d %d; ",ch,87+i,m,u+i); }'`
	umask 77
	;;

pty*)
	class=`expr $i : 'pty\(.*\)'`
	case $class in
	0) offset=0 name=p;;
	1) offset=16 name=q;;
	2) offset=32 name=r;;
	3) offset=48 name=s;;
	4) offset=64 name=s;;
	5) offset=80 name=s;;
	*) echo bad unit for pty in: $i;;
	esac
	case $class in
	0|1|2|3|4|5)
		umask 0
		eval `echo $offset $name | awk ' { b=$1; n=$2 } END {
			for (i = 0; i < 16; i++)
				printf("mknod tty%s%x c 9 %d; \
					mknod pty%s%x c 10 %d; ", \
					n, i, b+i, n, i, b+i); }'`
		umask 77
		;;
	esac
	;;

enp*)
	unit=`expr $i : 'enp\(.*\)'`
	case $unit in
	[0-6])
		mknod enp${unit}ram c 16 $unit; chmod 644 enp${unit}ram
		;;
	*)
		echo bad unit for enp in: $i
		;;
	esac
	;;

dr*)
	unit=`expr $i : 'dr\(.*\)'`
	case $unit in
	[0-6])
		mknod dr${unit} c 18 $unit; chmod 644 dr${unit}
		;;
	*)
		echo bad unit for dr in: $i
		;;
	esac
	;;

ik*)
	unit=`expr $i : 'ik\(.*\)'`
	case $unit in
	[0-9])
		mknod ik${unit} c 20 $unit; chmod 644 ik${unit}
		;;
	*)
		echo bad unit for ik in: $i
		;;
	esac
	;;

local)
	sh MAKEDEV.local
	;;
esac
done