[dahdi-commits] tzafrir: branch tools/tzafrir/perl-sysstate r7719 - in /tools/team/tzafrir/pe...

[SVN commits to the DAHDI project]

Author: tzafrir
Date: Mon Dec 21 16:41:08 2009
New Revision: 7719

URL: http://svnview.digium.com/svn/dahdi?view=rev&rev=7719
Log:
Optionally get the root from DAHDI_VIRT_TOP; Fix propcfs handling

* Set up variables in Dahdi.pm to access /proc files.
* They are initialized when Dahdi::set_virt_base() is run.
* Convert all remaining usage of /proc files to the new variables.
* Set the root in Dahdi::spans() .

Modified:
    tools/team/tzafrir/perl-sysstate/xpp/perl_modules/Dahdi.pm
    tools/team/tzafrir/perl-sysstate/xpp/perl_modules/Dahdi/Xpp/Xbus.pm

Modified: tools/team/tzafrir/perl-sysstate/xpp/perl_modules/Dahdi.pm
URL: http://svnview.digium.com/svn/dahdi/tools/team/tzafrir/perl-sysstate/xpp/perl_modules/Dahdi.pm?view=diff&rev=7719&r1=7718&r2=7719
==============================================================================
--- tools/team/tzafrir/perl-sysstate/xpp/perl_modules/Dahdi.pm (original)
+++ tools/team/tzafrir/perl-sysstate/xpp/perl_modules/Dahdi.pm Mon Dec 21 16:41:08 2009
@@ -32,7 +32,26 @@
   }
 =cut
 
-my $proc_base = "/proc/dahdi";
+our $virt_base;
+our $proc_dahdi_base;
+our $proc_xpp_base;
+
+# Initializes procfs and sysfs system root. Should be called before
+# any of those variables are used.
+#
+# Other modules should use e.g. $Dahdi::proc_dahdi_base instead of
+# '/proc/dahdi' directly.
+sub set_virt_base() {
+	return if defined $virt_base;
+
+	if (exists $ENV{DAHDI_VIRT_TOP}) {
+		$virt_base = $ENV{DAHDI_VIRT_TOP};
+	} else {
+		$virt_base = '';
+	}
+	$proc_dahdi_base = "$virt_base/proc/dahdi";
+	$proc_xpp_base = "$virt_base/proc/xpp";
+}
 
 =head1 spans()
 
@@ -43,15 +62,23 @@
 sub spans() {
 	my @spans;
 
-	-d $proc_base or return ();
-	foreach my $zfile (glob "$proc_base/*") {
-		next unless ($zfile =~ m{^$proc_base/\d+$});
+	set_virt_base();
+	-d $proc_dahdi_base or return ();
+	foreach my $zfile (glob "$proc_dahdi_base/*") {
+		next unless ($zfile =~ m{^$proc_dahdi_base/\d+$});
 		my $span = Dahdi::Span->new($zfile);
 		push(@spans, $span);
 	}
 	@spans = sort { $a->num <=> $b->num } @spans;
 	return @spans;
 }
+
+=head1 ENVIRONMENT
+
+If C<DAHDI_VIRT_TOP> is set in the environment, it will be considered
+as a path to a directory that holds a dump (copy) of all the required
+files from /proc and /sys . You can generate that directory using the
+script C<build_tools/dump_sys_state> .
 
 =head1 SEE ALSO
 

Modified: tools/team/tzafrir/perl-sysstate/xpp/perl_modules/Dahdi/Xpp/Xbus.pm
URL: http://svnview.digium.com/svn/dahdi/tools/team/tzafrir/perl-sysstate/xpp/perl_modules/Dahdi/Xpp/Xbus.pm?view=diff&rev=7719&r1=7718&r2=7719
==============================================================================
--- tools/team/tzafrir/perl-sysstate/xpp/perl_modules/Dahdi/Xpp/Xbus.pm (original)
+++ tools/team/tzafrir/perl-sysstate/xpp/perl_modules/Dahdi/Xpp/Xbus.pm Mon Dec 21 16:41:08 2009
@@ -12,8 +12,6 @@
 use Dahdi::Hardware;
 use Dahdi::Xpp::Xpd;
 
-my $proc_base = "/proc/xpp";
-
 sub xpds($) {
 	my $xbus = shift;
 	return @{$xbus->{XPDS}};
@@ -54,7 +52,7 @@
 	foreach my $attr (@attr) {
 		my $file = sprintf "$Dahdi::Xpp::sysfs_astribanks/xbus-%02d/$attr", $busnum;
 		unless(-f $file) {
-			my $procfile = sprintf "/proc/xpp/XBUS-%02d/$attr", $busnum;
+			my $procfile = sprintf "$Dahdi::proc_xpp_base/XBUS-%02d/$attr", $busnum;
 			warn "$0: warning - OLD DRIVER: missing '$file'. Fall back to '$procfile'\n"
 				unless $file_warned{$attr}++;
 			$file = $procfile;
@@ -113,7 +111,7 @@
 
 sub read_xpdnames_old($) {
 	my $xbus_num = shift || die;
-	my $pat = sprintf "/proc/xpp/XBUS-%02d/XPD-[0-9][0-9]", $xbus_num;
+	my $pat = sprintf "$Dahdi::proc_xpp_base/XBUS-%02d/XPD-[0-9][0-9]", $xbus_num;
 	my @xpdnames;
 
 	#print STDERR "read_xpdnames_old($xbus_num): $pat\n";
@@ -175,7 +173,7 @@
 	}
 	foreach my $xpdstr (@xpdnames) {
 		my ($busnum, $unit, $subunit) = split(/:/, $xpdstr);
-		my $procdir = "/proc/xpp/XBUS-$busnum/XPD-$unit$subunit";
+		my $procdir = "$Dahdi::proc_xpp_base/XBUS-$busnum/XPD-$unit$subunit";
 		my $xpd = Dahdi::Xpp::Xpd->new($self, $unit, $subunit, $procdir, "$xbus_dir/$xpdstr");
 		push(@xpds, $xpd);
 	}