87 lines
1.6 KiB
Bash
Executable File
87 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
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# convert character to ASCII value
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ascii() {
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echo $(printf "%d" "'$1")
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}
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# convert ASCII value to character
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char () {
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[ "$1" -lt 256 ] || return
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printf "\\$(printf '%03o' "$1")"
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}
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# Create character device
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# cdev <dev_name> <major> <minor>
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cdev() {
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[ -c /dev/$1 ] || mknod /dev/$1 c $2 $3
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}
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# Create block device
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# bdev <dev_name> <major> <minor>
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bdev() {
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[ -b /dev/$1 ] || mknod /dev/$1 b $2 $3
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}
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# Create generic character device
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cdev mem 1 1
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cdev kmem 1 2
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cdev null 1 3
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cdev port 1 4
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cdev zero 1 5
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cdev random 1 8
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cdev urandom 1 9
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cdev tty 5 0
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cdev console 5 1
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# Create TTY device (/dev/tty*, /dev/ttyS*)
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MAX_DEV_NO=1
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i=0
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while [ $i -le $MAX_DEV_NO ]; do
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cdev tty$i 4 $i
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cdev ttyS$i 4 $((i+64))
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i=$((i+1))
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done
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# Create MTD device (/dev/mtd*, /dev/mtd*ro, /dev/mtdblock*)
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MAX_DEV_NO=13
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i=0
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while [ $i -le $MAX_DEV_NO ]; do
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cdev mtd$i 90 $((i*2))
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cdev mtd${i}ro 90 $((i*2+1))
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bdev mtdblock$i 31 $i
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i=$((i+1))
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done
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# Create RAM disk devices (/dev/ram*)
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MAX_DEV_NO=5
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i=0
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while [ $i -le $MAX_DEV_NO ]; do
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bdev ram$i 1 $i
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i=$((i+1))
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done
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# Create SCSI disk device (/dev/sda*, /dev/sdb*...)
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# max. device symbol is 'p', must be lowercase
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MAX_DISK_SYMBOL=c
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# max. device/partition number is 15
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MAX_DEV_NO=3
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minor=0
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i=0
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while [ $i -le $(($(ascii $MAX_DISK_SYMBOL)-$(ascii 'a'))) ]; do
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#for i in `eval echo "{a..$MAX_DISK_SYMBOL}"`; do
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j=1
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bdev sd$(char $((i+$(ascii 'a')))) 8 $((minor*16))
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# for j in `eval echo "{1..$MAX_DEV_NO}"`; do
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while [ $j -le $MAX_DEV_NO ]; do
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bdev sd$(char $((i+$(ascii 'a'))))$j 8 $((minor*16+j))
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j=$((j+1))
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done
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minor=$((minor+1))
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i=$((i+1))
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done
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