do not placate -Wpointer-sign

[chiark-utils.git] / backup / increm

diff --git a/backup/increm b/backup/increm
index 9bad0f1c6e3229b3cd2d4fdf53ff3f4c0e748408..c9d52cabc657b73b448b7379f6cad63fe2f899b3 100755 (executable)
--- a/backup/increm
+++ b/backup/increm
@@ -6,12 +6,13 @@
 # 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) 1997-1998,2000-2001,2007
+#                     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.
+# Foundation; either version 3, 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
@@ -19,8 +20,8 @@
 # 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.
+# with this program; if not, consult the Free Software Foundation's
+# website at www.fsf.org, or the GNU Project website at www.gnu.org.
 
 # We are invoked by full if the tape description file says that it is
 # for an incremental backup.  We expect two commandline argument which
@@ -61,29 +62,26 @@ close A or die $!;
 # better be a decimal number
 $advance =~ m/^\d+$/ or die "$advance ?";
 
+# Get a list of all filesystems
+readfsys('all');
+openlog();
+
 # Rewind the tape and if we are the first incremental on the tape then
 # write the TAPEID record, otherwise skip forward to the correct point.
 # (full will already have checked that this is the right tape before
 # it invoked us, so no need to read the existing TAPEID record first.)
-system "mt -f $ntape rewind"; $? and die $?;
+runsystem("mt -f $ntape rewind");
 if ($advance == 1) {
-    open TI,">TAPEID" or die $!;
-    print TI "$tapeid\n$tapedesc\n" or die $!;
-    close TI or die $!;
-
-    system "tar -b$blocksize -vvcf TAPEID.tar TAPEID"; $? and die $?;
-    system "dd if=TAPEID.tar of=$ntape bs=${blocksize}b count=10"; $? and die $?;
+    writetapeid($tapeid,$tapedesc);
 } else {
-    system "mt -f $ntape fsf $advance"; $? and die $?;
+    runsystem("mt -f $ntape fsf $advance");
+    $currenttapefilenumber= $advance;
 }
 
-# Get a list of all filesystems
-readfsys('all');
-openlog();
-
 sub closepipes () {
     close(DUMPOR); close(BUFOR);
     close(DUMPOW); close(BUFOW);
+    close(GZOR); close(GZOW);
 }
 
 setstatus "PROBLEMS during incremental dump";
@@ -91,6 +89,7 @@ setstatus "PROBLEMS during incremental dump";
 for $tf (@fsys) {
 
     parsefsys();
+    prepfsys();
     
     $bufir='DUMPOR';
     $ddcmd= "$nasty dd ibs=$softblocksizebytes obs=$blocksizebytes of=$ntape";
@@ -105,13 +104,22 @@ for $tf (@fsys) {
        $ddcmd .= " conv=sync";
     }
 
+    if ($dopt{'noinc'}) {
+       pboth("Incrementals of $atf_print ($prefix) suppressed in config.\n");
+    }
+
     if ($tm eq 'dump') {
-       $dumpcmd= "dump 1bfu $softblocksizekb - $atf";
+       $dumplabel= $pcstr.$atf_print.'$';
+       $dumpcmd= "dump 1Lbfu $dumplabel $softblocksizekb - $atf";
+    } elsif ($tm eq 'gtar') {
+       $dumpcmd= "tar NCcfl $fsidfile $atf - .";
     } else {
-       print "Not dumping $atf ($prefix) - not \`dump'.\n" or die $!;
-       print LOG "Not dumping $atf ($prefix) - not \`dump'.\n" or die $!;
+       pboth("Not dumping $atf_print ($prefix) - not supported.\n");
        next;
     }
+
+    nexttapefile("inc $prefix:$atf_print");
+    
     # Same trick as full uses to do a pipeline whilst keeping track
     # of all exit statuses:
     #   dump </dev/null | writebuffer | dd >/dev/null
@@ -126,17 +134,18 @@ for $tf (@fsys) {
     # advance is a file counter, so it needs to be updated for each 
     # dump we do to tape.
     $advance++;
+
+    finfsys();
 }
 
 # Rewind the tape, and increment the counter of incremental backups.
-system "mt -f $tape rewind"; $? and die $?;
+runsystem("mt -f $tape rewind");
 open IAN,">increm-advance.new" or die $!;
 print IAN "$advance\n" or die $!;
 close IAN or die $!;
 rename 'increm-advance.new','increm-advance' or die $!;
 
-print LOG "Next FULL dump tape is $next\n" or die $!;
-print "Next FULL dump tape is $next\n" or die $!;
+pboth("Next FULL dump tape is $next\n");
 
 setstatus "INCREMENTAL successful: $tapedesc, next full is $next";
 exit 0;