minix/etc/rc
Jean-Baptiste Boric 8b8fa23c78 isofs: reworked for better performance
isofs now uses an in-memory directory listing built on-the-fly instead
of parsing the ISO 9660 data structures over and over for almost every
request. This yields huge performance improvements.

The directory listing is allocated dynamically, but Minix servers aren't
normally supposed to do that because critical servers would crash if the
system runs out of memory. isofs is quite frugal, won't allocate memory
after having the whole directory tree cached and is not that critical
(its most important job is to serve as a root file system during
installation).

The benefits and elegance of this scheme far outweights this small
problem in practice.

Change-Id: I13d070388c07d274cbee0645cbc50295c447c5b6
2015-05-16 13:21:17 +02:00

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Executable File

# /etc/rc - System startup script run by init before going multiuser.
exec >/dev/log
exec 2>/dev/log
exec </dev/null
umask 022
# Same settings as in the default /etc/profile. We do not source this file
# as the system administrator may decide to change those values for his users.
RC_TZ=/etc/rc.timezone
PATH=/usr/local/sbin:/usr/pkg/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/pkg/bin:/usr/bin:/bin
# Set TERM to minix if not present.
TERM="${TERM-minix}"
export TERM PATH
# Local variables
ARCH="`sysenv arch`"
usage()
{
echo >&2 "Usage: $0 [-saf] autoboot|start|stop|down"
exec intr sh
}
up()
{
# Function to dynamically start a system service
opt=""
prefix=$(expr "$1 " : '\(-\)')
if [ "$prefix" = "-" ];
then
opt=$1
shift
fi
service=$1
shift
service $opt up /service/$service "$@"
}
edit()
{
# Function to dynamically edit system service settings
opt=""
prefix=$(expr "$1 " : '\(-\)')
if [ "$prefix" = "-" ];
then
opt=$1
shift
fi
service=$1
shift
# Assume binaries are always in /service or /usr/pkg/service
binlocation=/service/$service
if [ ! -x $binlocation ]
then binlocation=/usr/pkg/service/$service
fi
# Mostly to find init...
if [ ! -x $binlocation ]
then binlocation=/sbin/$service
fi
service $opt edit $binlocation -label $service "$@"
}
while getopts 'saf' opt
do
case $opt in
s) sflag=t ;; # Single user
a) aflag=t ;; # Ask for /usr
f) fflag=-f ;; # Force a full file system check
*) usage
esac
done
shift `expr $OPTIND - 1`
case "$#:$1" in
1:start|1:stop|1:down|1:autoboot)
action=$1
;;
*) usage
esac
case $action in
autoboot|start)
# National keyboard?
test -f /etc/keymap && loadkeys /etc/keymap
# options for fsck. default is -r, which prompts the user for repairs.
optname=fsckopts
fsckopts=-p
if sysenv $optname >/dev/null
then fsckopts="`sysenv $optname`"
fi
if [ "`sysenv debug_fkeys`" != 0 ]
then
up -n is -period 5HZ
fi
# Set timezone.
export TZ=GMT0
if [ -f "$RC_TZ" ]
then . "$RC_TZ"
fi
# Start real time clock driver & set system time, otherwise default date.
up readclock.drv
readclock -q || date 201301010000
# We are not shutting down.
rm -f /etc/nologin
# Use MFS binary only from kernel image?
if [ "`sysenv bin_img`" = 1 ]
then
bin_img="-i "
fi
# Are we booting from CD?
bootcd="`/bin/sysenv bootcd`"
if [ -z "$bootcd" ]
then
# If we're not booting from CD, fsck + mount using /etc/fstab.
fsck -x / $fflag $fsckopts
mount -a
fi
# Unmount and free now defunct ramdisk
umount /dev/imgrd > /dev/null || echo "Failed to unmount boot ramdisk"
ramdisk 0 /dev/imgrd || echo "Failed to free boot ramdisk"
# Edit settings for boot system services
if [ "`sysenv skip_boot_config`" != 1 ]
then
edit rs
edit vm
edit pm
edit sched
edit vfs
edit ds
edit tty
edit memory
edit pfs
edit init
fi
if [ "$sflag" ]
then
echo "Single user. Press ^D to resume multiuser startup."
intr sh
echo
fi
echo "Multiuser startup in progress ..."
case "`printroot -r`":$bootcd in
/dev/ram:)
# Remove boot-only things to make space,
# unless booting from CD, in which case we need them.
rm -rf /boot
# put the compiler on ram
cp /usr/lib/em* /usr/lib/cpp* /lib
esac
echo -n "Starting hotplugging infrastructure... "
rm -f /var/run/devmand.pid
devmand -d /etc/devmand -d /usr/pkg/etc/devmand &
echo "done."
# Things should be alright now.
;;
down|stop)
sync
if [ -f /var/run/devmand.pid ]
then
kill -INT `cat /var/run/devmand.pid`
# without this delay the following will
# be printed in the console
# RS: devman not running?
sleep 1
fi
#
# usbd needs to be stopped exactly
# at this stage(before stopping devman
# and after stopping the services
# stated by devmand)
if [ -x /usr/pkg/etc/rc.d/usbd ]
then
/usr/pkg/etc/rc.d/usbd stop
fi
if [ -x /service/usbd ]
then
service down usbd
fi
# Tell RS server we're going down.
service shutdown
;;
esac
# Further initialization.
test -f /usr/etc/rc && sh /usr/etc/rc $action
test -f /usr/local/etc/rc && sh /usr/local/etc/rc $action
# Any messages?
if [ "$action" = start -o "$action" = autoboot ]
then if [ -f /etc/issue ]
then cat /etc/issue
fi
fi
exit 0