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:
#	ct*	HP300 HP-IB cartridge tape
#	st*	Exabyte tape
# Disks:
#	cd*	"concatenated" pseudo-disks
#	rd*	HP300 HP-IB disks
#	sd*	HP300 SCSI disks
#	vnd*	"file" pseudo-disks
# Terminal multiplexors:
#	dca*	HP200/300 single port serial interface
#	dcm*	HP200/300 4 port serial mux interface
# Pseudo terminals:
#	pty*	set of 16 master and slave pseudo terminals
# Printers:
# Call units:
# Special purpose devices:
#	flog*	kernel logging device
#	grf*	raw interface to HP300 graphics devices
#	ite*	terminal emulator interface to HP300 graphics devices
#	hil	HP300 HIL input devices

PATH=/sbin:/bin/:/usr/bin:/usr/sbin
umask 77
for i
do
case $i in

std)
	mknod console		c 0 0
	mknod drum		c 3 0	; chmod 640 drum ; chgrp kmem drum
	mknod kmem		c 2 1	; chmod 640 kmem ; chgrp kmem kmem
	mknod mem		c 2 0	; chmod 640 mem ; chgrp kmem mem
	mknod null		c 2 2	; chmod 666 null
	mknod zero      	c 2 12  ; chmod 666 zero
	mknod tty		c 1 0	; chmod 666 tty
	mknod klog		c 6 0	; chmod 600 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/*
	;;

ct*|st*)
	umask 0 ; unit=`expr $i : '..\(.*\)'`
	case $i in
	ct*) name=ct; blk=0; chr=7;;
	st*) name=st; blk=6; chr=20;;
	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`
		#
		# block devices don't work so don't make them
		#mknod ${name}${unit}	b $blk $unit
		#mknod ${name}${four}	b $blk $four
		#mknod ${name}${eight}	b $blk $eight
		#mknod ${name}${twelve}	b $blk $twelve
		#mknod n${name}${unit}	b $blk $four ;: sanity w/pdp11 v7
		#mknod n${name}${eight}	b $blk $twelve ;: ditto
		#
		mknod r${name}${unit}	c $chr $unit
		mknod r${name}${four}	c $chr $four
		mknod r${name}${eight}	c $chr $eight
		mknod r${name}${twelve}	c $chr $twelve
		ln r${name}${four} nr${name}${unit} ;: sanity w/pdp11 v7
		ln r${name}${twelve} nr${name}${eight} ;: ditto
		;;
	*)
		echo bad unit for tape in: $1
		;;
	esac
	umask 77
	;;

cd*|fd*|rd*|sd*)
	umask 2 ; unit=`expr $i : '..\(.*\)'`
	case $i in
	rd*) name=rd; blk=2; chr=9;;
	sd*) name=sd; blk=4; chr=8;;
	cd*) name=cd; blk=5; chr=17;;
	vnd*) name=vnd; blk=6; chr=19;;
	esac
	case $unit in
	0|1|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16|\
	17|18|19|20|21|22|23|24|25|26|27|28|29|30|31)
		mknod ${name}${unit}c	b $blk `expr $unit '*' 8 + 2`
		mknod r${name}${unit}c	c $chr `expr $unit '*' 8 + 2`
		if [ $name != cd -a $name != vnd ]
		then
		mknod ${name}${unit}a	b $blk `expr $unit '*' 8 + 0`
		mknod ${name}${unit}b	b $blk `expr $unit '*' 8 + 1`
		mknod ${name}${unit}d	b $blk `expr $unit '*' 8 + 3`
		mknod ${name}${unit}e	b $blk `expr $unit '*' 8 + 4`
		mknod ${name}${unit}f	b $blk `expr $unit '*' 8 + 5`
		mknod ${name}${unit}g	b $blk `expr $unit '*' 8 + 6`
		mknod ${name}${unit}h	b $blk `expr $unit '*' 8 + 7`
		mknod r${name}${unit}a	c $chr `expr $unit '*' 8 + 0`
		mknod r${name}${unit}b	c $chr `expr $unit '*' 8 + 1`
		mknod r${name}${unit}d	c $chr `expr $unit '*' 8 + 3`
		mknod r${name}${unit}e	c $chr `expr $unit '*' 8 + 4`
		mknod r${name}${unit}f	c $chr `expr $unit '*' 8 + 5`
		mknod r${name}${unit}g	c $chr `expr $unit '*' 8 + 6`
		mknod r${name}${unit}h	c $chr `expr $unit '*' 8 + 7`
		fi
		chgrp operator ${name}${unit}[a-h] r${name}${unit}[a-h]
		chmod 640 ${name}${unit}[a-h] r${name}${unit}[a-h]
		;;
	*)
		echo bad unit for disk in: $i
		;;
	esac
	umask 77
	;;

dca*)
	unit=`expr $i : 'dca\(.*\)'`
	case $unit in
	0)
		mknod tty0 c 12 0
		;;
	*)
		echo bad unit for dca in: $i
		;;
	esac
	;;

dcm*)
	unit=`expr $i : 'dcm\(.*\)'`
	case $unit in
	0|1|2|3)
		eval `echo $unit | awk ' { unit = $1; u = 4 * $1 } END {
		for (i = 0; i < 4; i++)
		printf("mknod tty0%x c 15 %d; ",u+i,u+i); }'`
	;;
	*)
		echo bad unit for dcm in: $i
		;;
	esac
	;;

ite*)
	unit=`expr $i : 'ite\(.*\)'`
	case $unit in
	0|1|2|3)
		mknod ttye${unit} c 13 ${unit}
		;;
	*)
		echo bad unit for ite in: $i
		;;
	esac
	;;

grf*)
	unit=`expr $i : 'grf\(.*\)'`
	case $unit in
	0|1|2|3)
		mknod grf${unit} c 10 ${unit}; chmod 666 grf${unit}
		echo "grf${unit}: use MAKEDEV.hpux to make HP-UX names for device"
		;;
	*)
		echo bad unit for grf in: $i
		;;
	esac
	;;

hil)
	for unit in 0 1 2 3 4 5 6 7
	do
		mknod hil${unit} c 14 ${unit}
		if [ -f /usr/local/hilinfo ]
		then
			case `/usr/local/hilinfo -t hil${unit}` in
			mouse)
				if [ ! -f locator ]
				then
					ln hil${unit} locator
				fi
				;;
			keyboard)
				if [ ! -f keyboard ]
				then
					ln hil${unit} keyboard
				fi
				;;
			*)
				;;
			esac
		fi
	done
	if [ ! -f /usr/local/hilinfo ]
	then
		ln hil1 keyboard
		ln hil3 locator
	fi
	chmod 666 hil*
	echo "hil: use MAKEDEV.hpux to make HP-UX names for devices"
	;;

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;;
# Note that telnetd, rlogind, and xterm (at least) only look at p-s.
	4) offset=64 name=t;;
	*) echo bad unit for pty in: $i;;
	esac
	case $class in
	0|1|2|3|4)
		umask 0
		eval `echo $offset $name | awk ' { b=$1; n=$2 } END {
			for (i = 0; i < 16; i++)
				printf("mknod tty%s%x c 4 %d; \
					mknod pty%s%x c 5 %d; ", \
					n, i, b+i, n, i, b+i); }'`
		umask 77
		if [ $class = 1 ]; then
			mv ttyqf ttyv0; mv ptyqf ptyv0
		fi
		;;
	esac
	;;

local)
	umask 0
	sh MAKEDEV.local
	;;
*)
	echo $i: unknown device
	;;
esac
done