X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=chiark-utils.git;a=blobdiff_plain;f=backup%2Fdriver;h=d6782b3d28f574dec5aad6cf30ea94d1115ba82e;hp=394b3fbf04e8d46465f4b8135a24bd8db0e1831b;hb=aafd617b49ae360300140a00b4548bbf0284882d;hpb=49b87b31128ab8bf32998d60eeacfe397a5a4b19

diff --git a/backup/driver b/backup/driver
index 394b3fb..d6782b3 100755
--- a/backup/driver
+++ b/backup/driver
@@ -1,7 +1,29 @@
 #!/bin/sh
-
-cd /var/local/backup
-PATH=/usr/local/lib/backup:$PATH export PATH
+# driver
+# entry point for inittab (or perhaps cron) to run the backups.
+#
+# This file is part of chiark backup, a system for backing up GNU/Linux and
+# other UN*X-compatible machines, as used on chiark.greenend.org.uk.
+#
+# chiark backup is:
+#  Copyright (C) 1997-1998,2000-2001 Ian Jackson <ian@chiark.greenend.org.uk>
+#  Copyright (C) 1999 Peter Maydell <pmaydell@chiark.greenend.org.uk>
+#
+# This is free software; you can redistribute it and/or modify it under the
+# terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 2, or (at your option) any later version.
+#
+# This is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+cd /var/lib/chiark-backup
+PATH=/usr/share/chiark-backup:$PATH export PATH
 
 if [ "x$1" != test ]; then
 	stty sane
@@ -11,11 +33,18 @@ fi
 rm -f this-status p p2
 echo 'FAILED to start dump script' >this-status
 
-full 2>&1 | tee this-log
+# Here we go : run 'full', which (name notwithstanding) handles
+# both full and incremental backups, according to the ID of the
+# tape in the drive.
+(full; snap-drop) 2>&1 | tee this-log
 
 status=`cat this-status 2>/dev/null`
 
-cat <<END - this-log | /usr/lib/sendmail -oi -om -odq -t
+# Mail a report to somewhere appropriate; -odq removed (means just 
+# queue message, don't try to deliver) because it just delays the
+# message (you might want that if mail was one of the services turned
+# off for the duration of the backup, though).
+cat <<END - this-log | /usr/lib/sendmail -oi -om -oee -t
 To: dump-reports
 Subject: Dump Report: $status
 
@@ -24,6 +53,7 @@ END
 rm -f /TAPEID
 
 if [ "x$1" != test ]; then
+        # Bring the system up as multiuser again
 	bringup
 	stty isig
 fi