#
+# Assorted useful functions used by the backup scripts.
+
sub printdate () {
print scalar(localtime),"\n";
}
+# Set status info -- we write the current status to a file
+# so if we hang or crash the last thing written to the file
+# will tell us where we were when things went pear-shaped.
sub setstatus ($) {
open S, ">this-status.new" or die $!;
print S $_[0],"\n" or die $!;
rename "this-status.new","this-status" or die $!;
}
+# startprocess, endprocesses, killprocesses are
+# used to implement the funky pipeline stuff.
sub startprocess ($$$) {
my ($i,$o,$c) = @_;
print LOG " $c\n" or die $!;
undef %processes;
}
+# Read a fsys.foo filesystem group definition file.
+# Syntax is: empty lines and those beginning with '#' are ignored.
+# Trailing whitespace is ignored. Lines of the form 'prefix foo bar'
+# are handled specially, as arex lines 'exclude regexp'; otherwise
+# we just shove the line into @fsys and let parsefsys deal with it.
sub readfsys ($) {
my ($fsnm) = @_;
open F, "$etc/fsys.$fsnm" or die "Filesystems $fsnm unknown ($!).\n";
for (;;) {
- $_= <F> or die; chomp; s/\s*$//;
+ $_= <F> or die "unexpected EOF in $etc/fsys.$fsnm\n"; chomp; s/\s*$//;
last if m/^end$/;
next unless m/\S/;
next if m/^\#/;
if (m/^prefix\s+(\w+)\s+(\S.*\S)$/) {
$prefix{$1}= $2;
- next;
} elsif (m/^prefix\-df\s+(\w+)\s+(\S.*\S)$/) {
$prefixdf{$1}= $2;
- next;
+ } elsif (m/^excludedir\s+(\S.*\S)$/) {
+ push @excldir,$1;
+ } elsif (m/^exclude\s+(\S.*\S)$/) {
+ push @excl,$1;
+ } else {
+ push @fsys,$_;
}
- push @fsys,$_;
}
close F or die $!;
}
+# Parse a line from a filesystem definition file. We expect the line
+# to be in $tf.
sub parsefsys () {
if ($tf =~ m,^(/\S*)\s+(\w+)$,) {
+ # Line of form '/file/system dumptype'
$atf= $1;
$tm= $2;
$prefix= '<local>';
-d _ or die "not a dir: $atf";
$rstr= '';
} elsif ($tf =~ m,^(/\S*)\s+(\w+)\s+(\w+)$,) {
+ # Line of form '/file/system dumptype prefix'
+ # (used for remote backups, I think)
$atf= $1;
$tm= $2;
$prefix= $3;