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