X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=backup%2Fbackuplib.pl;h=e80f779ca0a6d77d8988d5ce85800c589a1a1626;hb=3358df8cd92a7f958b9918ad0e2ce9350edbb823;hp=37b3d7936f6c8bf3568739f77e5b56bcc315c6fd;hpb=d906fbd72072c6953922e0627bbcf3d4c62ce7c0;p=chiark-utils.git

diff --git a/backup/backuplib.pl b/backup/backuplib.pl
index 37b3d79..e80f779 100644
--- a/backup/backuplib.pl
+++ b/backup/backuplib.pl
@@ -21,6 +21,8 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
+require IO::File;
+
 sub printdate () {
     print scalar(localtime),"\n";
 }
@@ -49,6 +51,29 @@ sub startprocess ($$$) {
     exec $c; die "$c: $!";
 }
 
+sub rewind_raw () {
+    system "mt -f $tape rewind"; $? and die $?;
+}
+
+sub readtapeid_raw () {
+    open T, ">>TAPEID" or die $!; close T;
+    unlink 'TAPEID' or die $!;
+    rewind_raw();
+    system "mt -f $tape setblk $blocksizebytes"; $? and die $?;
+    system "dd if=$tape bs=${blocksize}b count=10 ".
+	   "| tar -b$blocksize -vvxf - TAPEID";
+}
+
+sub writetapeid ($) {
+    open T, ">TAPEID" or die $!;
+    print T "$_[0]\n" or die $!;
+    close T 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 $?;
+}
+
 sub endprocesses () {
     while (keys %processes) {
 	$p= waitpid(-1,0) or die "wait: $!";
@@ -73,11 +98,14 @@ sub killprocesses {
 # Trailing whitespace is ignored. Lines of the form 'prefix foo bar'
 # are handled specially, as arex lines 'exclude regexp'; otherwise 
 # we just shove the line into @fsys and let parsefsys deal with it.
-sub readfsys ($) {
-    my ($fsnm) = @_;
-    open F, "$etc/fsys.$fsnm" or die "Filesystems $fsnm unknown ($!).\n";
+
+sub readfsysfile ($) {
+    my ($fn) = @_;
+    my ($fh,$sfn);
+    $fh= new IO::File "$fn", "r" or die "cannot open fsys file $fn ($!).\n";
     for (;;) {
-	$_= <F> or die "unexpected EOF in $etc/fsys.$fsnm\n"; chomp; s/\s*$//;
+	$!=0; $_= <$fh> or die "unexpected EOF in $fn ($!)\n";
+	chomp; s/\s*$//;
 	last if m/^end$/;
 	next unless m/\S/;
 	next if m/^\#/;
@@ -89,11 +117,24 @@ sub readfsys ($) {
             push @excldir,$1;
         } elsif (m/^exclude\s+(\S.*\S)$/) {
             push @excl,$1;
+	} elsif (m/^include\s+(\S.*\S)$/) {
+	    $sfn = $1;
+	    $sfn =~ s/^\./fsys./;
+	    $sfn = "$etc/$sfn" unless $sfn =~ m,^/,;
+	    readfsysfile($sfn);
         } else {
 	    push @fsys,$_;
 	}
     }
-    close F or die $!;
+    close $fh or die $!;
+}
+
+sub readfsys ($) {
+    my ($fsnm) = @_;
+    my ($fsf);
+    $fsf= "$etc/fsys.$fsnm";
+    stat $fsf or die "Filesystems $fsnm unknown ($!).\n";
+    readfsysfile($fsf);
 }
 
 # Parse a line from a filesystem definition file. We expect the line