| 1 | #!/bin/sh |
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| 2 | # Script to bounce the packs on an Athena workstation |
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| 3 | # |
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| 4 | # $Id: reactivate.sh,v 1.81 2007-02-02 22:07:18 rbasch Exp $ |
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| 5 | |
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| 6 | # Ignore various terminating signals. |
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| 7 | trap "" HUP INT QUIT PIPE ALRM TERM USR1 USR2 |
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| 8 | |
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| 9 | PATH=/bin:/etc/athena:/bin/athena:/usr/bin:/usr/sbin:/usr/ucb:/usr/bsd:/sbin; export PATH |
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| 10 | HOSTTYPE=`/bin/athena/machtype`; export HOSTTYPE |
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| 11 | |
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| 12 | pidfile=/var/athena/reactivate.pid |
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| 13 | countfile=/var/athena/reactivate.count |
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| 14 | nologin=/etc/nologin |
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| 15 | made_nologin=false |
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| 16 | afsconfig=/afs/athena.mit.edu/system/config/afs |
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| 17 | |
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| 18 | umask 22 |
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| 19 | . /etc/athena/rc.conf |
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| 20 | |
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| 21 | case "$HOSTTYPE" in |
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| 22 | sun4) |
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| 23 | # Quit now if the multi-user milestone has not been reached, |
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| 24 | # i.e. we have not completed booting. |
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| 25 | multi_user=`svcs -H -o state /milestone/multi-user 2>/dev/null` |
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| 26 | if [ -n "$multi_user" -a "$multi_user" != online ]; then |
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| 27 | exit 0 |
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| 28 | fi |
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| 29 | ;; |
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| 30 | esac |
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| 31 | |
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| 32 | # Quit now if in the middle of an update. |
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| 33 | if [ -f /var/athena/update.running ]; then |
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| 34 | # In an update, quit now. |
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| 35 | echo "reactivate: This workstation is in the middle of an update." |
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| 36 | exit 1 |
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| 37 | fi |
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| 38 | |
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| 39 | if [ "$1" = -prelogin ]; then |
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| 40 | echo "Cleaning up..." >> /dev/console |
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| 41 | full=false |
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| 42 | else |
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| 43 | full=true |
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| 44 | fi |
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| 45 | |
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| 46 | # Quit now if another reactivate process is running. |
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| 47 | if [ -s $pidfile ]; then |
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| 48 | pid=`cat $pidfile 2>/dev/null` |
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| 49 | if [ -n "$pid" -a "$pid" -ne 0 ]; then |
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| 50 | kill -0 $pid 2>/dev/null |
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| 51 | if [ $? -eq 0 ]; then |
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| 52 | echo "Another reactivate process is running ($pid)." |
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| 53 | exit 0 |
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| 54 | fi |
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| 55 | fi |
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| 56 | fi |
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| 57 | |
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| 58 | echo $$ > $pidfile |
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| 59 | |
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| 60 | # Define a function to clean up at exit. |
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| 61 | # We want to ensure that we don't leave logins disabled. |
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| 62 | # This function also removes our pid file. |
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| 63 | # (Note that terminating signals are ignored, above). |
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| 64 | cleanexit() |
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| 65 | { |
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| 66 | if [ true = "${made_nologin}" ]; then |
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| 67 | rm -f $nologin |
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| 68 | fi |
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| 69 | rm -f $pidfile |
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| 70 | } |
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| 71 | |
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| 72 | trap cleanexit EXIT |
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| 73 | |
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| 74 | # See if anyone is logged in. We check for stale utmp entries, by |
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| 75 | # doing a kill -0 on the session leader's pid. |
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| 76 | # The Linux who does not give the pid, so we must use ps to figure |
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| 77 | # it out. |
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| 78 | if [ "$full" = true ]; then |
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| 79 | if [ linux = "$HOSTTYPE" ]; then |
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| 80 | pids= |
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| 81 | # Use w instead of who, since it ignores stale utmp entries. |
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| 82 | for tty in `w -h -s | awk '{ print $2; }'` ; do |
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| 83 | pids="$pids `ps --no-heading -j -t $tty 2>/dev/null | \ |
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| 84 | awk '($1 == $3) { print $1; }'`" |
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| 85 | done |
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| 86 | else |
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| 87 | pids=`who -u | awk '{ print $7; }'` |
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| 88 | fi |
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| 89 | |
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| 90 | # If any session leader pid is current, quit now. Ignore dm |
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| 91 | # (which is the session leader on the console tty), in case of |
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| 92 | # a stale utmp entry from a console login. |
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| 93 | dmpid=`cat /var/athena/dm.pid 2>/dev/null` |
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| 94 | for pid in $pids ; do |
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| 95 | if [ "$pid" != "$dmpid" ]; then |
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| 96 | kill -0 $pid 2>/dev/null |
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| 97 | if [ $? -eq 0 ]; then |
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| 98 | rm -f $countfile |
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| 99 | exit 0 |
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| 100 | fi |
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| 101 | fi |
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| 102 | done |
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| 103 | |
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| 104 | # Also quit if there are screen processes running. |
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| 105 | if [ false = "$PUBLIC" ] && pgrep '^screen' > /dev/null; then |
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| 106 | exit 0 |
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| 107 | fi |
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| 108 | |
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| 109 | # Check for valid Athena session records; these get created for |
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| 110 | # remote shells, etc., which may not have an associated utmp entry. |
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| 111 | # Quit if any are found. |
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| 112 | |
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| 113 | # We need to use nawk on Solaris in parsing the sessions file below. |
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| 114 | case "$HOSTTYPE" in |
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| 115 | sun4) |
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| 116 | awk=nawk |
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| 117 | ;; |
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| 118 | *) |
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| 119 | awk=awk |
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| 120 | ;; |
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| 121 | esac |
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| 122 | |
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| 123 | for i in /var/athena/sessions/* ; do |
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| 124 | if [ -s $i ]; then |
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| 125 | for pid in ` \ |
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| 126 | $awk -F : ' \ |
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| 127 | FNR == 5 \ |
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| 128 | { \ |
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| 129 | for (i = 1; i <= NF; i++) \ |
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| 130 | if (int($i) != 0) \ |
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| 131 | print $i; \ |
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| 132 | }' $i` ; do |
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| 133 | kill -0 $pid 2>/dev/null |
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| 134 | if [ $? -eq 0 ]; then |
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| 135 | rm -f $countfile |
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| 136 | exit 0 |
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| 137 | fi |
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| 138 | done |
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| 139 | fi |
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| 140 | done |
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| 141 | |
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| 142 | local-menus |
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| 143 | fi |
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| 144 | |
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| 145 | # There are no current logins or sessions, so proceed. We disable |
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| 146 | # logins for the duration, by creating /etc/nologin, unless it |
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| 147 | # already exists. |
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| 148 | if [ ! -f $nologin ]; then |
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| 149 | made_nologin=true |
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| 150 | echo "Workstation is reactivating." > $nologin |
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| 151 | fi |
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| 152 | |
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| 153 | # Usage: nuke directoryname |
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| 154 | # Do the equivalent of rm -rf directoryname/*, except using saferm. |
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| 155 | nuke() |
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| 156 | { |
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| 157 | ( |
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| 158 | cd $1 |
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| 159 | if [ $? -eq 0 ]; then |
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| 160 | find * ! -type d -exec saferm {} \; |
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| 161 | find * -depth -type d -exec rmdir {} \; |
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| 162 | fi |
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| 163 | ) |
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| 164 | } |
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| 165 | |
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| 166 | # Begin section for actions to be performed in all cases, including |
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| 167 | # for a private machine during prelogin. |
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| 168 | |
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| 169 | # Remove any mozilla component and chrome registries, created if |
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| 170 | # mozilla is run as root. The resulting component registry may |
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| 171 | # be corrupted, preventing mozilla from starting subsequently. |
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| 172 | # See http://bugzilla.mozilla.org/show_bug.cgi?id=197516 |
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| 173 | rm -rf /usr/athena/lib/mozilla/components/compreg.dat |
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| 174 | rm -rf /usr/athena/lib/mozilla/components/xpti.dat |
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| 175 | rm -rf /usr/athena/lib/mozilla/chrome/chrome.rdf |
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| 176 | rm -rf /usr/athena/lib/mozilla/chrome/overlayinfo |
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| 177 | |
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| 178 | # End section for actions to be performed in all cases. |
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| 179 | |
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| 180 | if [ "$PUBLIC" = false -a "$full" = false ]; then |
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| 181 | exit 0 |
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| 182 | fi |
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| 183 | |
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| 184 | if [ -f /var/athena/clusterinfo.bsh ] ; then |
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| 185 | . /var/athena/clusterinfo.bsh |
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| 186 | fi |
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| 187 | |
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| 188 | # Determine where the config files live |
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| 189 | THISVERS=`awk '{a=$5} END{print a}' /etc/athena/version` |
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| 190 | if [ "$HOSTTYPE" = linux -a -n "$SYSPREFIX" ]; then |
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| 191 | config=$SYSPREFIX/config/$THISVERS |
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| 192 | pwconfig=$config/etc |
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| 193 | else |
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| 194 | config=/srvd |
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| 195 | pwconfig=/afs/athena.mit.edu/system/config/passwd/`machtype -S` |
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| 196 | fi |
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| 197 | |
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| 198 | # We don't want to detach all filesystems on every invocation, so |
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| 199 | # we keep a count file, and only detach all every tenth invocation, |
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| 200 | # or when the -detach option is specified. |
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| 201 | count=`cat $countfile 2>/dev/null` |
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| 202 | if [ -z "$count" ]; then |
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| 203 | count=0 |
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| 204 | fi |
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| 205 | if [ "$1" = -detach -o `expr $count % 10` -eq 0 ]; then |
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| 206 | dflags="" |
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| 207 | else |
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| 208 | dflags="-clean" |
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| 209 | fi |
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| 210 | |
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| 211 | if [ ! -t 0 ]; then |
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| 212 | quiet=-q |
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| 213 | else |
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| 214 | echo "Reactivating workstation..." |
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| 215 | quiet="" |
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| 216 | fi |
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| 217 | |
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| 218 | # Flush all NFS uid mappings |
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| 219 | /bin/athena/fsid $quiet -p -a |
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| 220 | |
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| 221 | # Tell the Zephyr hostmanager to reset state |
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| 222 | if [ -f /var/athena/zhm.pid -a "$ZCLIENT" = true ] ; then |
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| 223 | /bin/kill -HUP `/bin/cat /var/athena/zhm.pid` |
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| 224 | fi |
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| 225 | |
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| 226 | # Zero any ticket files in /tmp that may have escaped other methods |
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| 227 | # of destruction, before we clear /tmp. We must cd there since saferm |
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| 228 | # will not follow symbolic links. |
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| 229 | (cd /tmp; saferm -z tkt* krb5cc*) > /dev/null 2>&1 |
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| 230 | |
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| 231 | # Clean up occasional leavings of emacs and esd. |
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| 232 | rm -rf /var/tmp/!!!SuperLock!!! /tmp/.esd |
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| 233 | |
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| 234 | # Remove utmp and wtmp so Solaris doesn't complain. |
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| 235 | if [ sun4 = "$HOSTTYPE" ]; then |
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| 236 | rm -rf /var/adm/utmp /var/adm/wtmp |
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| 237 | fi |
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| 238 | |
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| 239 | # Clean up socket files left by sawfish. |
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| 240 | rm -rf /tmp/.sawfish-* |
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| 241 | |
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| 242 | # Clean up per-session temporary directories. |
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| 243 | rm -rf /tmp/session-* |
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| 244 | |
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| 245 | if [ "$full" = true ]; then |
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| 246 | # Clean temporary areas (including temporary home directories) |
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| 247 | if [ "$PUBLIC" = true ]; then |
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| 248 | if [ sun4 = "$HOSTTYPE" -a -f /tmp/ps_data ]; then |
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| 249 | cp -p /tmp/ps_data /var/athena/ps_data |
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| 250 | nuke /tmp > /dev/null 2>&1 |
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| 251 | cp -p /var/athena/ps_data /tmp/ps_data |
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| 252 | rm -f /var/athena/ps_data |
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| 253 | else |
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| 254 | nuke /tmp > /dev/null 2>&1 |
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| 255 | fi |
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| 256 | fi |
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| 257 | nuke /var/athena/tmphomedir > /dev/null 2>&1 |
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| 258 | fi |
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| 259 | |
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| 260 | # Copy in a few config files |
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| 261 | if [ "$PUBLIC" = true ]; then |
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| 262 | if [ -d $pwconfig ]; then |
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| 263 | syncupdate -c /etc/passwd.local.new $pwconfig/passwd \ |
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| 264 | /etc/passwd.local |
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| 265 | syncupdate -c /etc/shadow.local.new $pwconfig/shadow \ |
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| 266 | /etc/shadow.local |
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| 267 | syncupdate -c /etc/group.local.new $pwconfig/group \ |
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| 268 | /etc/group.local |
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| 269 | fi |
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| 270 | if [ -d $config ]; then |
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| 271 | cp $config/etc/athena/athinfo.access /etc/athena |
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| 272 | cp $config/etc/athena/local-lockers.conf /etc/athena |
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| 273 | fi |
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| 274 | rm -rf /etc/athena/access >/dev/null 2>&1 |
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| 275 | fi |
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| 276 | |
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| 277 | # Restore password and group files |
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| 278 | if [ -s /etc/passwd.local ] ; then |
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| 279 | syncupdate -c /etc/passwd.new /etc/passwd.local /etc/passwd |
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| 280 | fi |
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| 281 | if [ -s /etc/shadow.local ] ; then |
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| 282 | syncupdate -c /etc/shadow.new /etc/shadow.local /etc/shadow |
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| 283 | fi |
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| 284 | if [ -s /etc/group.local ] ; then |
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| 285 | syncupdate -c /etc/group.new /etc/group.local /etc/group |
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| 286 | fi |
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| 287 | |
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| 288 | if [ "$full" = true ]; then |
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| 289 | # Reconfigure AFS state |
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| 290 | if [ "$AFSCLIENT" != "false" ]; then |
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| 291 | /etc/athena/config_afs > /dev/null 2>&1 & |
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| 292 | fi |
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| 293 | # If the encrypt file doesn't exist, disable AFS encryption. |
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| 294 | # Don't do this on Irix because we're not running OpenAFS there. |
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| 295 | if [ sgi != "$HOSTTYPE" ]; then |
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| 296 | if [ -f $afsconfig/encrypt ]; then |
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| 297 | /bin/athena/fs setcrypt on |
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| 298 | else |
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| 299 | /bin/athena/fs setcrypt off |
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| 300 | fi |
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| 301 | fi |
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| 302 | fi |
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| 303 | |
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| 304 | # Punt any processes owned by users not in /etc/passwd. |
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| 305 | /etc/athena/cleanup -passwd |
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| 306 | |
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| 307 | if [ "$full" = true ]; then |
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| 308 | # Remove session files. |
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| 309 | for i in /var/athena/sessions/*; do |
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| 310 | # Sanity check. |
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| 311 | if [ -s $i ]; then |
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| 312 | logger -p user.notice "Non-empty session record $i" |
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| 313 | fi |
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| 314 | rm -f $i |
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| 315 | done |
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| 316 | |
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| 317 | # Detach all remote filesystems |
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| 318 | /bin/athena/detach -O -h -n $quiet $dflags -a |
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| 319 | |
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| 320 | # Now start activate again |
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| 321 | /etc/athena/save_cluster_info |
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| 322 | |
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| 323 | if [ -f /var/athena/clusterinfo.bsh ] ; then |
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| 324 | . /var/athena/clusterinfo.bsh |
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| 325 | # Set up /etc/noroot as appropriate. |
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| 326 | if [ -n "$CLUSTER" ]; then |
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| 327 | touch /var/athena/iscluster |
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| 328 | echo "Use su to gain root access to cluster machines" \ |
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| 329 | "or quickstations." > /etc/noroot |
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| 330 | chmod 644 /var/athena/iscluster /etc/noroot |
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| 331 | else |
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| 332 | rm -f /var/athena/iscluster /etc/noroot |
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| 333 | fi |
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| 334 | elif [ "$RVDCLIENT" = true ]; then |
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| 335 | echo "Can't determine system packs location." |
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| 336 | exit 1 |
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| 337 | fi |
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| 338 | |
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| 339 | if [ "$RVDCLIENT" = true ]; then |
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| 340 | /bin/athena/attach $quiet -h -n -O $SYSLIB |
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| 341 | fi |
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| 342 | |
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| 343 | # Perform an update if appropriate |
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| 344 | update_ws -a reactivate |
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| 345 | |
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| 346 | if [ "$PUBLIC" = true -a -f /srvd/.rvdinfo ]; then |
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| 347 | NEWVERS=`awk '{a=$5} END{print a}' /srvd/.rvdinfo` |
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| 348 | if [ "$NEWVERS" = "$THISVERS" ]; then |
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| 349 | case "$HOSTTYPE" in |
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| 350 | sun4) |
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| 351 | /srvd/usr/athena/etc/verify-pkgs |
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| 352 | ;; |
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| 353 | *) |
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| 354 | /usr/athena/etc/track -q |
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| 355 | ;; |
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| 356 | esac |
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| 357 | cf=`cat /srvd/usr/athena/lib/update/configfiles` |
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| 358 | for i in $cf; do |
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| 359 | if [ -f /srvd$i ]; then |
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| 360 | src=/srvd$i |
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| 361 | else |
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| 362 | src=/os$i |
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| 363 | fi |
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| 364 | syncupdate -c $i.new $src $i |
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| 365 | done |
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| 366 | ps -e | awk '$4=="inetd" {print $1}' | xargs kill -HUP |
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| 367 | fi |
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| 368 | fi |
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| 369 | fi |
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| 370 | |
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| 371 | if [ "$PUBLIC" = true ]; then |
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| 372 | rm -f /etc/athena/reactivate.local /etc/ssh_host_* /etc/ssh_random_seed |
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| 373 | if [ -r /var/athena/sshd.pid ]; then |
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| 374 | # public machines shouldn't be running an sshd |
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| 375 | kill `cat /var/athena/sshd.pid` |
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| 376 | fi |
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| 377 | rm -rf /etc/athena/orbitrc |
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| 378 | # Clean up Mozilla cache directories. |
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| 379 | rm -rf /var/tmp/Mozilla-* |
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| 380 | fi |
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| 381 | |
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| 382 | if [ "$ACCESSON" = true -a -f /usr/athena/bin/access_on ]; then |
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| 383 | /usr/athena/bin/access_on |
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| 384 | elif [ "$ACCESSON" != true -a -f /usr/athena/bin/access_off ]; then |
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| 385 | /usr/athena/bin/access_off |
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| 386 | fi |
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| 387 | |
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| 388 | if [ "$full" = true ]; then |
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| 389 | if [ -f /etc/athena/reactivate.local ]; then |
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| 390 | /etc/athena/reactivate.local |
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| 391 | fi |
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| 392 | # Update our invocation count. |
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| 393 | echo `expr $count + 1` > $countfile |
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| 394 | fi |
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| 395 | |
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| 396 | exit 0 |
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