X-Git-Url: http://andersk.mit.edu/gitweb/moira.git/blobdiff_plain/51bf07bbd57944b0983e4758552a40e8315ba328..refs/heads/LOCKING:/gen/hesiod.sh

diff --git a/gen/hesiod.sh b/gen/hesiod.sh
index f3142deb..1e9cdeeb 100644
--- a/gen/hesiod.sh
+++ b/gen/hesiod.sh
@@ -1,37 +1,108 @@
-#! /bin/sh
-TARFILE=/tmp/hesiod
-SRC_DIR=/etc/athena/_nameserver
-DEST_DIR=/etc/athena/nameserver
-if [ ! -d $SRC_DIR ]; then
-	/bin/rm -f $SRC_DIR
-	/bin/mkdir $SRC_DIR
-	/bin/chmod 755 $SRC_DIR
-fi
-#if [ ! -d $DEST_DIR ]; then
-#	/bin/rm -f $DEST_DIR
-#	/bin/mkdir $DEST_DIR
-#	/bin/chmod 755 $DEST_DIR
-#fi
+#!/bin/csh -f
+# This script performs updates of hesiod files on hesiod servers.  
+# $Header$
+
+set path=(/etc /bin /usr/bin /usr/etc /usr/athena/etc)
+
+# The following exit codes are defined and MUST BE CONSISTENT with the
+# MR error codes the library uses:
+set MR_HESFILE = 	47836472
+set MR_MISSINGFILE = 	47836473
+set MR_NAMED = 		47836475
+set MR_TARERR = 	47836476
+
+umask 22
+
+# File that will contain the necessary information to be updated
+set TARFILE=/var/tmp/hesiod.out
+# Directory into which we will empty the tarfile
+set SRC_DIR=/etc/athena/_nameserver
+# Directory into which we will put the final product
+set DEST_DIR=/etc/athena/nameserver
+
+# Create the destination directory if it doesn't exist
+if (! -d $DEST_DIR) then
+   rm -f $DEST_DIR
+   mkdir $DEST_DIR
+   chmod 755 $DEST_DIR
+endif
+
+# If $SRC_DIR does not already exist, make sure that it gets created
+# on the same parition as $DEST_DIR.
+if (! -d $SRC_DIR) then
+	chdir $DEST_DIR
+	mkdir ../_nameserver
+	chdir ../_nameserver
+	if ($SRC_DIR != `pwd`) then
+		ln -s `pwd` $SRC_DIR
+	endif
+endif
+
+# Alert if tarfile doesn't exist
+if (! -r $TARFILE) exit $MR_MISSINGFILE
+
+# Empty the tar file one file at a time and move each file to the
+# appropriate place only if it is not zero length. 
 cd $SRC_DIR
-for file in `/bin/tar tf $TARFILE`; do 
-	if [ ./ = $file ]; then continue; fi
-	/bin/tar xf $TARFILE $file
-	if [ -s $file ]; then
-		/bin/mv -f $file $DEST_DIR
-	else
-		/bin/rm -f $file
-	fi
-done
-# The following three lines were changed by WES on 9/10/87.
-# They may not be in the sources.
-/bin/rm -f $TARFILE
-kill -KILL `/bin/cat /etc/named.pid`
-
-csh -fc "unlimit; /etc/named"
-
-
-exit
-#
-# 	$Source$
-#	$Header$
-#
+foreach  file (`tar tf $TARFILE | awk '{print $1}' | sed 's;/$;;'`)
+   if (. == $file) continue
+
+   rm -rf $file
+   echo extracting $file
+   tar xf $TARFILE $file
+   # Don't put up with errors extracting the information
+   if ($status) exit $MR_TARERR
+   # Make sure the file is not zero-length
+   if (! -z $file) then
+      mv -f $file $DEST_DIR
+      if ($status != 0) exit $MR_HESFILE
+   else
+      rm -f $file
+      exit $MR_MISSINGFILE
+   endif
+end
+
+# Kill off the current named and remove the named.pid file.  It is
+# important that this file be removed since the script uses its
+# existance as evidence that named as has been successfully restarted.
+
+# First, get statistics
+rm -f /usr/tmp/named.stats
+ln -s /var/named.stats /usr/tmp/named.stats
+kill -6 `cat /etc/named.pid`
+sleep 1
+# Use /bin/kill because, due to a bug in some versions of csh, failure
+# of a builtin will cause the script to abort
+kill -KILL `cat /etc/named.pid`
+rm -f /etc/named.pid
+
+# Restart named.
+# mv /etc/named.pid /etc/named.pid.restart
+#(unlimit; /etc/named&)
+/etc/named
+#sleep 5
+echo named started
+
+# This timeout is implemented by having the shell check TIMEOUT times
+# for the existance of /etc/named.pid and to sleep INTERVAL seconds
+# between each check.
+
+set TIMEOUT=60			# number of INTERVALS until timeout
+set INTERVAL=60			# number of seconds between checks
+set i = 0
+while ($i < $TIMEOUT)
+   sleep $INTERVAL
+   if (-f /etc/named.pid) break
+   @ i++
+end
+echo out of timeout loop
+# Did it time out?
+if ($i == $TIMEOUT) exit $MR_NAMED
+echo no timeout
+# Clean up!
+rm -f $TARFILE
+echo removed tarfile
+rm -f $0
+echo removed self
+
+exit 0