ref: 45ad7fb2547ea58c1733387c21b295c04625a176
dir: /rc/bin/fshalt/
#!/bin/rc
# fshalt [-r [kernel]] - sync (flush) and, if possible, halt all file servers
# and optionally reboot
rfork en
reboot=no
scram=no
bootf=()
if(~ $1 -r){
reboot=yes
shift
}
if not if(! ~ $#* 0 && ! ~ $#* 1){
echo usage: $0 '[-r bootkern]' >[1=2]
exit usage
}
if(~ $reboot yes && ~ $#* 1){
bootf=$1
if(! ~ $bootf /*)
bootf=`{builtin pwd}^/$bootf
}
path=(/bin)
builtin cd /
bind -c '#s' /srv
bind '#p' /proc
unmount /mnt/consoles >[2]/dev/null
kill consolefs | rc # don't compete with /mnt/consoles
sleep 1
c=`{ls /srv/cwfs*cmd >[2]/dev/null}
h=`{ls /srv/hjfs*cmd >[2]/dev/null}
# for scram, don't scram other systems
bind -b '#P' /dev >[2]/dev/null
if(! ~ $reboot yes){
if (test -e '#P'/apm)
scram=yes
if (test -e '#P'/acpitbls -a -e '#P'/iow)
scram=yes
}
# halting (binaries we run can't be on the fs we're halting)
ramfs
builtin cd /tmp
cp /bin/echo /tmp
mkdir /tmp/lib
cp /rc/lib/rcmain /tmp/lib
cp /bin/ns /tmp
cp /bin/rc /tmp
cp /bin/sed /tmp
cp /bin/sleep /tmp
cp /bin/scram /tmp
cp /bin/test /tmp
if(~ $#bootf 1){
if(! cp $bootf /tmp/bootf)
exit 'failed to copy kernel'
bootf=/bin/bootf
}
bind /tmp /rc
bind /tmp /bin
# put this in a shell function so this rc script doesn't get read
# when it's no longer accessible
fn x {
echo
echo -n halting...
for (i in $c $h)
echo halt >>$i
for (i in $c $h){
echo -n $i...
while(test -e $i)
sleep 1
}
echo
echo done halting
if (~ $reboot yes) {
echo rebooting...
echo reboot $bootf >'#c/reboot'
}
if not if (test -e /dev/pmctl) {
echo power off >>/dev/pmctl
}
if (~ $scram yes){
scram
echo 'It''s now safe to turn off your computer'
}
}
x