initial checkin, found stuff

[chiark-utils.git] / backup / backuplib.pl

diff --git a/backup/backuplib.pl b/backup/backuplib.pl
index 1c6b64c4ceb62c4d59e5d869cdf264eea62cc08f..b537f2ff7544874d6693141f8f851cf7630d305f 100644 (file)
--- a/backup/backuplib.pl
+++ b/backup/backuplib.pl
@@ -173,8 +173,6 @@ sub parsefsys () {
        $dopts= $3;
        $prefix= '<local>';
        $pcstr= '';
-       stat $atf or die "stat $atf: $!";
-       -d _ or die "not a dir: $atf";
        $rstr= '';
     } elsif ($tf =~ m#^(/\S*)\s+(\w+)([,=0-9a-z]*)\s+(\w+)$#) {
         # Line of form '[/device:]/file/system dumptype[,options] prefix'
@@ -190,13 +188,23 @@ sub parsefsys () {
        die "fsys $tf ?";
     }
 
+    $fsidstr= $pcstr.$atf;
+    $fsidstr =~ s/[,+]/+$&/g;
+    $fsidstr =~ s#/#,#g;
+    $fsidfile= "/var/lib/chiark-backup/incstamp,$fsidstr";
+
     $dev = $atf =~ s,^(.*)\:,, ? $1 : '';
 
+    if (!length $pcstr) {
+       stat $atf or die "stat $atf: $!";
+       -d _ or die "not a dir: $atf";
+    }
+
     undef %dopt;
     foreach $dopt (split /\,/,$dopts) {
        if (grep { $dopt eq $_ } qw(gz)) {
            $dopt{$dopt}= 'y';
-       if (grep { $dopt eq $_ } qw(snap)) {
+       } elsif (grep { $dopt eq $_ } qw(snap)) {
            $dopt{$dopt}= $dopt;
        } elsif ($dopt =~ m/\=/ && grep { $` eq $_ } qw(gz snap)) {
            $dopt{$`}= $';
@@ -217,25 +225,38 @@ sub parsefsys () {
            $$gzo= '';
        }
     }
+
+    if (length $dopt{'snap'}) {
+       length $dev or die "$pcstr:$atf no device but needed for snap";
+    }
+}
+
+sub execute ($) {
+    pboth("  $_[0]\n");
+    system $_[0]; $? and die "$_[0] $?";
 }
 
 sub prepfsys () {
+    $dev_print= $dev;
+    $atf_print= $atf;
+    
     if (length $dopt{'snap'}) {
+       
        system('snap-drop'); $? and die $?;
        
        $snapscripts= '/etc/chiark-backup/snap';
-       $snapbase= "$pcstr $snapscripts/$dopt{'snap'} /var/lib/chiark-backup";
+       $snapbase= "$rstr $snapscripts/$dopt{'snap'}";
+       $snapargs= "/var/lib/chiark-backup";
 
-       $snapsnap= "$snapbase snap $dev $atf";
-       $snapdrop= "$snapbase drop";
+       $snapsnap= "$snapbase snap $snapargs $dev $atf";
+       $snapdrop= "$snapbase drop $snapargs";
 
        open SD, ">snap-drop.new" or die $!;
        print SD $snapdrop,"\n" or die $!;
        close SD or die $!;
        rename "snap-drop.new","snap-drop" or die $!;
 
-       pboth("  $snapsnap\n");
-       system $snapsnap; $? and die $?;
+       execute($snapsnap);
 
        $dev_nosnap= $dev;
        $atf_nosnap= $atf;