e7db2d3588
This driver can be loaded as an overlay on top of a real block device, and can then be used to generate block-level failures for certain transfer requests. Specifically, a rule-based system allows the user to introduce (overt and silent) data corruption and errors. It exposes itself through /dev/fbd, and a file system can be mounted on top of it. The new fbdctl(8) tool can be used to control the driver; see ``man fbdctl'' for details. It also comes with a test set, located in test/fbdtest.
288 lines
7.4 KiB
Bash
288 lines
7.4 KiB
Bash
#!/bin/sh
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#
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# MAKEDEV 3.3 - Make special devices. Author: Kees J. Bot
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case $1 in
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-n) e=echo; shift ;; # Just echo when -n is given.
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*) e=
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esac
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case $#:$1 in
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1:std) # Standard devices.
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set -$- mem fd0 fd1 fd0p0 fd1p0 \
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c0d0 c0d0p0 c0d0p0s0 c0d1 c0d1p0 c0d1p0s0 \
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c0d2 c0d2p0 c0d2p0s0 c0d3 c0d3p0 c0d3p0s0 \
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c0d4 c0d4p0 c0d4p0s0 c0d5 c0d5p0 c0d5p0s0 \
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c0d6 c0d6p0 c0d6p0s0 c0d7 c0d7p0 c0d7p0s0 \
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c1d0 c1d0p0 c1d0p0s0 c1d1 c1d1p0 c1d1p0s0 \
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c1d2 c1d2p0 c1d2p0s0 c1d3 c1d3p0 c1d3p0s0 \
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c1d4 c1d4p0 c1d4p0s0 c1d5 c1d5p0 c1d5p0s0 \
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c1d6 c1d6p0 c1d6p0s0 c1d7 c1d7p0 c1d7p0s0 \
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tty ttyc1 ttyc2 ttyc3 tty00 tty01 tty02 tty03 \
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ttyp0 ttyp1 ttyp2 ttyp3 ttyp4 ttyp5 ttyp6 ttyp7 ttyp8 ttyp9 \
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ttypa ttypb ttypc ttypd ttype ttypf \
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ttyq0 ttyq1 ttyq2 ttyq3 ttyq4 ttyq5 ttyq6 ttyq7 ttyq8 ttyq9 \
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ttyqa ttyqb ttyqc ttyqd ttyqe ttyqf \
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eth klog random uds filter fbd hello
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;;
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0:|1:-\?)
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cat >&2 <<EOF
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Usage: $0 [-n] key ...
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Where key is one of the following:
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ram mem kmem null boot zero # One of these makes all these memory devices
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fd0 fd1 ... # Floppy devices for drive 0, 1, ...
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fd0p0 fd1p0 ... # Make floppy partitions fd0p[0-3], fd1p[0-3], ...
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c0d0 c0d1 ... # Make disks c0d0, c0d1, ...
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c0d0p0 c0d1p0 ... # Make partitions c0d0p[0-3], c0d1p[0-3], ...
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c0d0p0s0 c0d1p0s0 ... # Subparts c0d0p[0-3]s[0-3], c0d1p[0-3]s[0-3], ...
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c1d0(p0)(s0) # Likewise for controller 1
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c0t0 c0t1 c1t0 ... # Make tape devices c0t0, c0t0n, c0t1, ...
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console lp tty log # One of these makes all four
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ttyc1 ... ttyc7 # Virtual consoles
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tty00 ... tty03 # Make serial lines
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ttyp0 ... ttyq0 ... # Make tty, pty pairs
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eth ip tcp udp # One of these makes some TCP/IP devices
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audio mixer # Make audio devices
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klog # Make /dev/klog
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random # Make /dev/random, /dev/urandom
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uds # Make /dev/uds
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kbd # Make /dev/kbd
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kbdaux # Make /dev/kbdaux
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filter # Make /dev/filter
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fbd # Make /dev/fbd
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hello # Make /dev/hello
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video # Make /dev/video
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std # All standard devices
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EOF
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exit 1
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esac
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umask 077
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ex=0
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for dev
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do
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case $dev in # One of the controllers? Precompute major device nr.
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c0*) maj=3 ;;
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c1*) maj=8 ;;
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c2*) maj=10 ;;
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c3*) maj=12 ;;
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esac
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case $dev in
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ram|mem|kmem|null|boot|zero|imgrd)
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# Memory devices.
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#
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$e mknod ram b 1 0; $e chmod 600 ram
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$e mknod mem c 1 1; $e chmod 640 mem
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$e mknod kmem c 1 2; $e chmod 640 kmem
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$e mknod null c 1 3; $e chmod 666 null
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$e mknod boot b 1 4; $e chmod 600 ram
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$e mknod zero c 1 5; $e chmod 644 zero
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$e mknod imgrd b 1 6; $e chmod 644 zero
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for n in 0 1 2 3 4 5
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do $e mknod ram$n b 1 $((7+$n)); $e chmod 600 ram$n
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done
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$e chgrp kmem ram* mem kmem null boot zero imgrd
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;;
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fd[0-3])
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# Floppy disk drive n.
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#
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d=`expr $dev : '.*\\(.\\)'` # Drive number.
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$e mknod $dev b 2 $d
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$e chmod 666 $dev
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;;
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pc[0-3]|at[0-3]|qd[0-3]|ps[0-3]|pat[0-3]|qh[0-3]|PS[0-3])
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# Obsolete density locked floppy disk drive n.
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#
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d=`expr $dev : '.*\\(.\\)'` # Drive number.
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m=$d # Minor device number.
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$e mknod pc$d b 2 $m; m=`expr $m + 4`
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$e mknod at$d b 2 $m; m=`expr $m + 4`
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$e mknod qd$d b 2 $m; m=`expr $m + 4`
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$e mknod ps$d b 2 $m; m=`expr $m + 4`
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$e mknod pat$d b 2 $m; m=`expr $m + 4`
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$e mknod qh$d b 2 $m; m=`expr $m + 4`
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$e mknod PS$d b 2 $m; m=`expr $m + 4`
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$e chmod 666 pc$d at$d qd$d ps$d pat$d qh$d PS$d
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;;
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fd[0-3]p[0-3])
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# Floppy disk partitions.
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#
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n=`expr $dev : '\\(.*\\)..'` # Name prefix.
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d=`expr $dev : '..\\(.\\)'` # Drive number.
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m=`expr 112 + $d` # Minor of partition 0.
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alldev=
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for p in 0 1 2 3
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do
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m=`expr 112 + $d + $p '*' 4` # Minor of partition $p.
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$e mknod ${n}p${p} b 2 $m # Make e.g. fd0p0 - fd0p3
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alldev="$alldev ${n}p${p}"
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done
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$e chmod 666 $alldev
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;;
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c[0-3]d[0-7])
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# Whole disk devices.
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d=`expr $dev : '...\\(.\\)'` # Disk number.
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m=`expr $d '*' 5` # Minor device number.
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$e mknod $dev b $maj $m
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$e chmod 600 $dev
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;;
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c[0-3]d[0-7]p[0-3])
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# Disk primary partitions.
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n=`expr $dev : '\\(.*\\).'` # Name prefix.
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d=`expr $dev : '...\\(.\\)'` # Disk number.
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alldev=
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for p in 0 1 2 3
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do
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m=`expr $d '*' 5 + 1 + $p` # Minor device number.
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$e mknod $n$p b $maj $m
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alldev="$alldev $n$p"
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done
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echo $alldev | xargs $e chmod 600
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;;
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c[0-3]d[0-7]p[0-3]s[0-3])
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# Disk subpartition.
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n=`expr $dev : '\\(.*\\)...'` # Name prefix.
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d=`expr $dev : '...\\(.\\)'` # Disk number.
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alldev=
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for p in 0 1 2 3
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do
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for s in 0 1 2 3
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do
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m=`expr 128 + $d '*' 16 + $p '*' 4 + $s` # Minor device nr.
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$e mknod ${n}${p}s${s} b $maj $m
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alldev="$alldev ${n}${p}s${s}"
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done
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done
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echo $alldev | xargs $e chmod 600
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;;
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c[0-3]t[0-7]|c[0-3]t[0-7]n)
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# Tape devices.
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n=`expr $dev : '\\(....\\)'` # Name prefix.
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t=`expr $dev : '...\\(.\\)'` # Tape number.
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m=`expr 64 + $t '*' 2` # Minor device number.
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$e mknod ${n}n c $maj $m
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$e mknod ${n} c $maj `expr $m + 1`
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$e chmod 660 ${n}n ${n}
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;;
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console|lp|tty|log|kbd|kbdaux|video)
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# Console, line printer, anonymous tty, diagnostics device,
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# raw keyboard, ps/2 mouse, video.
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$e mknod console c 4 0
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$e chmod 600 console
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$e chgrp tty console
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$e mknod tty c 5 0
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$e chmod 666 tty
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$e mknod lp c 6 0
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$e chown daemon lp
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$e chgrp daemon lp
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$e chmod 200 lp
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$e mknod log c 4 15
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$e chmod 222 log
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$e mknod kbd c 4 127
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$e mknod kbdaux c 4 126
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$e chmod 660 kbd kbdaux
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$e chgrp operator kbd kbdaux
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$e mknod video c 4 125
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$e chmod 600 video
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$e chgrp operator video
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;;
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ttyc[1-7])
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# Virtual consoles.
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#
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m=`expr $dev : '....\\(.*\\)'` # Minor device number.
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$e mknod $dev c 4 $m
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$e chgrp tty $dev
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$e chmod 600 $dev
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;;
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tty0[0-3])
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# Serial lines.
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#
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n=`expr $dev : '.*\\(.\\)'`
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$e mknod $dev c 4 `expr $n + 16`
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$e chmod 666 $dev
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$e chgrp tty $dev
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;;
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tty[p-s][0-9a-f]|pty[p-s][0-9a-f])
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# Pseudo ttys.
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#
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dev=`expr $dev : '...\\(..\\)'`
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g=`expr $dev : '\\(.\\)'` # Which group.
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g=`echo $g | tr 'pqrs' '0123'`
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n=`expr $dev : '.\\(.\\)'` # Which pty in the group.
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case $n in
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[a-f]) n=1`/bin/echo $n | tr 'abcdef' '012345'`
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esac
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$e mknod tty$dev c 4 `expr $g '*' 16 + $n + 128`
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$e mknod pty$dev c 4 `expr $g '*' 16 + $n + 192`
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$e chgrp tty tty$dev pty$dev
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$e chmod 666 tty$dev pty$dev
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;;
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eth|ip|tcp|udp|eth0|ip0|tcp0|udp0)
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# TCP/IP devices.
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#
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$e mknod eth0 c 7 0 # Network 0 (Ethernet)
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$e mknod ip0 c 7 1
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$e mknod tcp0 c 7 2
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$e mknod udp0 c 7 3
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$e chmod 600 eth0 ip0
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$e chmod 666 tcp0 udp0
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$e ln -f eth0 eth # Default interface
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$e ln -f ip0 ip
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$e ln -f tcp0 tcp
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$e ln -f udp0 udp
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;;
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audio|mixer)
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# Audio devices.
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#
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$e mknod audio c 13 0
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$e mknod mixer c 13 1
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$e chmod 666 audio mixer
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;;
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random|urandom)
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# random data generator.
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$e mknod random c 16 0; $e chmod 644 random
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$e mknod urandom c 16 0; $e chmod 644 urandom
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$e chgrp operator random urandom
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;;
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uds)
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# unix domain sockets device
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$e mknod uds c 18 0; $e chmod 644 random
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$e chgrp operator uds
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$e chmod 666 uds
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;;
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klog)
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# logging device.
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$e mknod klog c 15 0
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$e chmod 600 klog
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;;
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filter)
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# filter driver
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$e mknod filter b 11 0
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$e chmod 644 filter
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;;
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fbd)
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# faulty block device driver
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$e mknod fbd b 14 0
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$e chmod 600 fbd
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;;
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hello)
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# hello driver
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$e mknod hello c 17 0
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$e chmod 644 hello
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;;
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*)
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echo "$0: don't know about $dev" >&2
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ex=1
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esac
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done
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exit $ex
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