1dee92ebe9
IMPORTANT: this change has a docs/UPDATING entry! Change-Id: I6f1e575166f5b47530a004c12aea9b45b571e13d
65 lines
2.5 KiB
Bash
Executable File
65 lines
2.5 KiB
Bash
Executable File
#!/bin/sh
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# Recovery script for LWIP. Aside from restarting the LWIP service itself, the
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# script aims to restart all of networking. This includes in particular any
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# network daemons: these daemons typically have open (listening) sockets that
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# will now have become invalid, and the daemons typically do not know how to
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# deal with that. Unfortunately, there is no reliable way to determine the
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# list of rc scripts that concern network daemons, so for now we hardcode a
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# list of known ones here: this is the list of network-related rc.d scripts.
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# FIXME: since we are not yet done importing etc/rc.d from NetBSD, this list is
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# still incomplete and should be extended as more scripts are imported!
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RC_SCRIPTS="dhclient dhcpcd dhcpd dhcrelay ftpd inetd named network rtadvd \
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sshd staticroute syslogd"
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exec < /dev/console
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exec > /dev/console
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exec 2> /dev/console
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export HOME=/
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export PATH=/sbin:/usr/sbin:/bin:/usr/bin
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. /etc/rc.subr
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. /etc/rc.conf
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# Restart the LWIP service.
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# There is no need to shut down daemons before bringing back up the service.
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# Note that "minix-service restart" does not do the same as these steps, and in
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# fact breaks a proper LWIP restart.
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restarts=$(grep restarts /proc/service/$1 | cut -d: -f2)
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minix-service down "$1"
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minix-service up /service/lwip -dev /dev/bpf -script /etc/rs.lwip \
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-restarts $(($restarts + 1))
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# Reload TCP ISN, or make a new one if there is none. Do not save anything.
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TCPISN_FILE=/usr/adm/tcpisn.dat
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TCPISN_LEN=$(sysctl -n net.inet.tcp.isn_secret | awk '{print length/2}')
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if [ ! -f $TCPISN_FILE ]; then TCPISN_FILE=/dev/random; fi
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sysctl -qw net.inet.tcp.isn_secret=`dd if=$TCPISN_FILE bs=$TCPISN_LEN \
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count=1 2>/dev/null | hexdump -v -e '/1 "%02x"'` 2>/dev/null
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# Let LWIP find all network drivers before performing initialization.
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sleep 1
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# Restart all network daemons.
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# Start with dhcpcd, which may be launched directly from ifconfig.if(5) scripts
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# and therefore may not be enabled in, and thus stopped by, rc.d scripts below.
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service dhcpcd onestop >/dev/null 2>&1
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# Then stop and start all known network daemons using their rc.d scripts.
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regex='/('"$(echo $RC_SCRIPTS | tr ' ' '|')"')$'
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scripts=$(for rcd in ${rc_directories:-/etc/rc.d}; do
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test -d ${rcd} && echo ${rcd}/*; done)
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files=$(rcorder ${scripts} | grep -E "$regex")
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for _rc_elem in $(reverse_list $files); do
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# We have already stopped dhcpcd if it was running, so skip it here.
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[ $_rc_elem != /etc/rc.d/dhcpcd ] && run_rc_script $_rc_elem stop
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done
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for _rc_elem in $files; do
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run_rc_script $_rc_elem start
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done
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