minix/commands/DESCRIBE/DESCRIBE.sh

   1 #!/bin/sh
   2 #
   3 # DESCRIBE 2.2 - Describe the given devices.            Author: Kees J. Bot
   4 #
   5 # BUGS
   6 # - Arguments may not contain shell metacharacters.
   7
   8 case $# in
   9 0)      flag=; set -$- /dev ;;
  10 *)      flag=d ;;
  11 esac
  12
  13 ls -l$flag $* | \
  14 sed     -e '/^total/d' \
  15         -e '/^l/d' \
  16         -e '/^[^bc]/s/.* /BAD BAD /' \
  17         -e '/^[bc]/s/.* \([0-9][0-9]*\), *\([0-9][0-9]*\).* /\1 \2 /' \
  18 | {
  19 ex=0    # exit code
  20
  21 while read major minor path
  22 do
  23     case $path in
  24     /*) name=`expr $path : '.*/\\(.*\\)$'`
  25         ;;
  26     *)  name=$path
  27     esac
  28     dev= des=
  29
  30     case $major in      # One of the controllers?  What is its controller nr?
  31     3)  ctrlr=0 ;;
  32     8)  ctrlr=1 ;;
  33     10) ctrlr=2 ;;
  34     12) ctrlr=3 ;;
  35     esac
  36
  37     case $major,$minor in
  38     1,0)        des="RAM disk" dev=ram
  39         ;;
  40     1,1)        des="memory" dev=mem
  41         ;;
  42     1,2)        des="kernel memory" dev=kmem
  43         ;;
  44     1,3)        des="null device, data sink" dev=null
  45         ;;
  46     1,4)        des="boot device loaded from boot image" dev=boot
  47         ;;
  48     1,5)        des="null byte stream generator" dev=zero
  49         ;;
  50     1,6)        des="boot image RAM disk" dev=imgrd
  51         ;;
  52     1,[789]|1,1[012])
  53                 ramdisk=`expr $minor - 7`
  54                 des="RAM disk $ramdisk" dev=ram$ramdisk
  55         ;;
  56     2,*)        drive=`expr $minor % 4`
  57         case `expr $minor - $drive` in
  58         0)      des='auto density' dev="fd$drive"
  59             ;;
  60         4)      des='360k, 5.25"' dev="pc$drive"
  61             ;;
  62         8)      des='1.2M, 5.25"' dev="at$drive"
  63             ;;
  64         12)     des='360k in 720k, 5.25"' dev="qd$drive"
  65             ;;
  66         16)     des='720k, 3.5"' dev="ps$drive"
  67             ;;
  68         20)     des='360k in 1.2M, 5.25"' dev="pat$drive"
  69             ;;
  70         24)     des='720k in 1.2M, 5.25"' dev="qh$drive"
  71             ;;
  72         28)     des='1.44M, 3.5"' dev="PS$drive"
  73             ;;
  74         112)    des='auto partition 0' dev="fd${drive}p0"
  75             ;;
  76         116)    des='auto partition 1' dev="fd${drive}p1"
  77             ;;
  78         120)    des='auto partition 2' dev="fd${drive}p2"
  79             ;;
  80         124)    des='auto partition 3' dev="fd${drive}p3"
  81             ;;
  82         *)      dev=BAD
  83         esac
  84         des="floppy drive $drive ($des)"
  85         ;;
  86     [38],[05]|[38],[123][05]|1[02],[05]|1[02],[123][05])
  87         drive=`expr $minor / 5`
  88         des="controller $ctrlr disk $drive" dev=c${ctrlr}d${drive}
  89         ;;
  90     [38],?|[38],[123]?|1[02],?|1[02],[123]?)
  91         drive=`expr $minor / 5`
  92         par=`expr $minor % 5 - 1`
  93         des="controller $ctrlr disk $drive partition $par"
  94         dev=c${ctrlr}d${drive}p${par}
  95         ;;
  96     [38],12[89]|[38],1[3-9]?|[38],2??|1[02],12[89]|1[02],1[3-9]?|1[02],2??)
  97         drive=`expr \\( $minor - 128 \\) / 16`
  98         par=`expr \\( \\( $minor - 128 \\) / 4 \\) % 4`
  99         sub=`expr \\( $minor - 128 \\) % 4`
 100         des="hard disk $drive, partition $par, subpartition $sub"
 101         des="controller $ctrlr disk $drive partition $par slice $sub"
 102         #par=`expr $drive '*' 5 + $par`
 103         dev=c${ctrlr}d${drive}p${par}s${sub}
 104         ;;
 105     [38],6[4-9]|[38],7?|1[02],6[4-9]|1[02],7?)
 106         tape=`expr \\( $minor - 64 \\) / 2`
 107         case $minor in
 108         *[02468])
 109             des="controller $ctrlr tape $tape (non-rewinding)"
 110             dev=c${ctrlr}t${tape}n
 111             ;;
 112         *[13579])
 113             des="controller $ctrlr tape $tape (rewinding)"
 114             dev=c${ctrlr}t${tape}
 115         esac
 116         ;;
 117     4,0)        des="console device" dev=console
 118         ;;
 119     4,[1-7])des="virtual console $minor" dev=ttyc$minor
 120         ;;
 121     4,15)       des="diagnostics device" dev=log
 122         ;;
 123     4,1[6-9])
 124         line=`expr $minor - 16`
 125         des="serial line $line" dev=tty0$line
 126         ;;
 127     4,125)      des="video output" dev=video
 128         ;;
 129     5,0)        des="anonymous tty" dev=tty
 130         ;;
 131     6,0)        des="line printer, parallel port" dev=lp
 132         ;;
 133     7,0)
 134         des="Berkeley Packet Filter device" dev=bpf
 135         ;;
 136     9,0)
 137         des="unix98 pseudoterminal master" dev=ptmx
 138         ;;
 139     9,12[89]|9,1[3-8]?|9,19[01])
 140         p=`expr \\( $minor - 128 \\) / 16 | tr '0123' 'pqrs'`
 141         n=`expr $minor % 16`
 142         test $n -ge 10 && n=`expr $n - 10 | tr '012345' 'abcdef'`
 143         des="pseudo tty `expr $minor - 128`" dev=tty$p$n
 144         ;;
 145     9,???)
 146         p=`expr \\( $minor - 192 \\) / 16 | tr '0123' 'pqrs'`
 147         n=`expr $minor % 16`
 148         test $n -ge 10 && n=`expr $n - 10 | tr '012345' 'abcdef'`
 149         des="controller of tty$p$n" dev=pty$p$n
 150         ;;
 151     11,0)
 152         des="block filter" dev=filter
 153         ;;
 154     13,0)
 155         des="audio" dev=audio
 156         ;;
 157     14,0)
 158         des="faulty block device driver" dev=fbd
 159         ;;
 160     15,0)
 161         des="kernel log" dev=klog
 162         ;;
 163     16,0)
 164         des="pseudo random number generator" dev=urandom
 165         ;;
 166     17,0)
 167         des="hello" dev=hello
 168         ;;
 169     5[6-9],0|6[0-3],0)
 170         drive=`expr $major - 56`
 171         des="vnode disk $drive" dev=vnd$drive
 172         ;;
 173     5[6-9],[1-4]|6[0-3],[1-4])
 174         drive=`expr $major - 56`
 175         par=`expr $minor - 1`
 176         des="vnode disk $drive partition $par" dev=vnd${drive}p${par}
 177         ;;
 178     5[6-9],12[89]|5[6-9],13[0-9]|5[6-9],14[0-3]|6[0-3],12[89]|5[6-9],13[0-9]|5[6-9],14[0-3])
 179         drive=`expr $major - 56`
 180         par=`expr \\( \\( $minor - 128 \\) / 4 \\) % 4`
 181         sub=`expr \\( $minor - 128 \\) % 4`
 182         des="vnode disk $drive partition $par slice $sub"
 183         dev=vnd${drive}p${par}s${sub}
 184         ;;
 185     64,0)
 186         des="keyboard input multiplexer"
 187         dev=kbdmux
 188         ;;
 189     64,[1-4])
 190         n=`expr $minor - 1`
 191         des="keyboard input $n"
 192         dev=kbd$n
 193         ;;
 194     64,64)
 195         des="mouse input multiplexer"
 196         dev=mousemux
 197         ;;
 198     64,6[5-8])
 199         n=`expr $minor - 65`
 200         des="mouse input $n"
 201         dev=mouse$n
 202         ;;
 203     BAD,BAD)
 204         des= dev=
 205         ;;
 206     *)  dev=BAD
 207     esac
 208
 209     case $name:$dev in
 210     *:)
 211         echo "$path: not a device" >&2
 212         ex=1
 213         ;;
 214     *:*BAD*)
 215         echo "$path: cannot describe: major=$major, minor=$minor" >&2
 216         ex=1
 217         ;;
 218     $dev:*)
 219         echo "$path: $des"
 220         ;;
 221     *:*)        echo "$path: nonstandard name for $dev: $des"
 222     esac
 223 done
 224
 225 exit $ex
 226 }