b47483433c
bin_img=1 in the boot monitor will make sure that during the boot procedure the mfs binary that is part of the boot image is the only binary that is used to mount partitions. This is useful when for some reason the mfs binary on disk malfunctions, rendering Minix unable to boot. By setting bin_img=1, the binary on disk is ignored and the binary in the boot image is used instead. - 'service' now accepts an additional flag -r. -r implies -c. -r instructs RS to first look in memory if the binary has already been copied to memory and execute that version, instead of loading the binary from disk. For example, the first time a MFS is being started it is copied (-c) to memory and executed from there. The second time MFS is being started this way, RS will look in memory for a previously copied MFS binary and reuse it if it exists. - The mount and newroot commands now accept an additional flag -i, which instructs them to set the MS_REUSE flag in the mount flags. - The mount system call now supports the MS_REUSE flag and invokes 'service' with the -r flag when MS_REUSE is set. - /etc/rc and the rc script that's included in the boot image check for the existence of the bin_img flag in the boot monitor, and invoke mount and newroot with the -i flag accordingly.
187 lines
4 KiB
Text
Executable file
187 lines
4 KiB
Text
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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TERM="${TERM-minix}"
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PATH=/usr/local/bin:/bin:/usr/bin:/usr/sbin
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RC_TZ=/etc/rc.timezone
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export TERM PATH
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usage()
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{
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echo >&2 "Usage: $0 [-saf] 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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service=$1
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shift
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# Function to dynamically start a system service
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echo -n " $service"
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service up /sbin/$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=t ;; # 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)
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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 $action in
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start)
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echo -n "Multiuser startup in progress ...:"
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# National keyboard?
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test -f /etc/keymap && loadkeys /etc/keymap
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up is -period 5HZ
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echo .
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# Set timezone.
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export TZ=GMT0
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if [ -f "$RC_TZ" ]
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then . "$RC_TZ"
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fi
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# Try to read the hardware real-time clock, otherwise do it manually.
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readclock || intr date -q
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# Initialize files.
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printroot >/etc/mtab # /etc/mtab keeps track of mounts
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>/etc/utmp # /etc/utmp keeps track of logins
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# /etc/fstab lists the root, tmp and usr devices.
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. /etc/fstab
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# Any swapspace on a device?
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test "$swap" : '/dev/' && mount -s $swap
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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 booting from CD, /usr has to be mounted readonly.
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# Also, $usr won't be specified correctly in the
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# fstab (the CD could be anywhere), so we decide
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# where it is based on sysenv (set by FS when probing for CD).
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if [ "$bootcd" = 1 ]
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then
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#imagedev="`/bin/sysenv cdproberoot`"
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#usrdev="`expr $imagedev + 1`"
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usr_roflag="-r"
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usr="$cddev"p2
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echo "Setting /usr on cd is $usr"
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fi
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# Mount the /usr partition unless this is a single floppy Minix.
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if [ ! -d /usr/bin ]
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then
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if [ "$aflag" -o "$usr" = unknown ]
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then
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# We need to ask what the /usr du jour is.
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intr sh -c '
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echo -n "Finish the name of device to mount as /usr: /dev/"
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read usr
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echo "usr=/dev/$usr" >/tmp/usr'
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. /tmp/usr
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fi
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mount $bin_img $usr_roflag $usr /usr || {
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echo "\
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Please try to mount something else as /usr, then hit CTRL-D to continue startup.
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Mount $usr /usr failed -- Single user."
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intr sh
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}
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rm -f /tmp/usr
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fi
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# Check if the system crashed.
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if shutdown -C
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then
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echo
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echo "The system was not properly shut down. Checking file systems."
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fflag=t
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fi
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if [ "$fflag" ]
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then
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umount $usr
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echo "fsck / - $root"
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intr fsck -r $root
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echo "fsck /usr - $usr"
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intr fsck -r $usr
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if [ ! -z "$home" ]
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then echo "fsck /home - $home"
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intr fsck -r $home
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fi
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mount $bin_img $usr /usr
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fi
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if [ ! -z "$home" ]
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then mount $bin_img $home /home || echo "WARNING: couldn't mount $home on /home"
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fi
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# This file is necessary for above 'shutdown -C' check.
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# (Silence stderr in case of running from cd.)
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touch /usr/adm/wtmp 2>/dev/null
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if [ "$sflag" ]
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then
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echo "Single user."
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intr sh
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fi
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# Any swapspace on a file?
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test -n "$swap" -a ! "$swap" : '/dev/' && mount -s $swap
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case "`printroot -r`":$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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# Things should be alright now.
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;;
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down|stop)
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sync
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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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#test -f /etc/rc.rescue && sh /etc/rc.rescue $action
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# Any messages?
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test "$action" = start -a -f /etc/issue && cat /etc/issue
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exit 0
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