From ff11c68efa6fac9a20ae62f0d7049b6e60ed9c4f Mon Sep 17 00:00:00 2001
From: Bob Gilligan <gilligan@vyatta.com>
Date: Mon, 11 Jan 2010 17:05:26 -0800
Subject: Add image name completion for two system image commands.

The two commands are:  "set system image default-boot" and
"delete system image".
---
 scripts/vyatta-boot-image.pl | 79 ++++++++++++++++++++++++++++++++++----------
 1 file changed, 61 insertions(+), 18 deletions(-)

(limited to 'scripts')

diff --git a/scripts/vyatta-boot-image.pl b/scripts/vyatta-boot-image.pl
index 304f35c..c3040b4 100755
--- a/scripts/vyatta-boot-image.pl
+++ b/scripts/vyatta-boot-image.pl
@@ -178,10 +178,13 @@ sub getBootList {
   return \@list;
 }
 
-# Prints the boot list generated by getBootList().
+
+# Prints the boot list generated by getBootList(). If the argument
+# $brief is set, display the entries for machine instead of human
+# consumption:  One entry per line showing the the version string only.
 #
 sub displayBootList {
-  my ($didx, $entries) = @_;
+  my ($didx, $entries, $brief) = @_;
   my $running_ver = curVer();
   for my $i (0 .. $#{$entries}) {
     my $di = $i + 1; 
@@ -195,7 +198,11 @@ sub displayBootList {
 	$m .= ' (running version)';
     }
 
-    printf "  %2d: %s%s\n", $di, $ver, $m;
+    if (defined($brief)) {
+	print "$ver\n";
+    } else {
+	printf "  %2d: %s%s\n", $di, $ver, $m;
+    }
   }
 }
 
@@ -203,9 +210,19 @@ sub displayBootList {
 # number passed in.
 #
 sub doSelect {
-  my ($resp, $def_ver, $bentries) = @_;
-  my $new_idx = $ {$bentries}[$resp]->{'idx'};
-  my $new_ver = $ {$bentries}[$resp]->{'ver'};
+  my ($resp, $def_ver, $bentries, $new_ver) = @_;
+  my $new_idx;
+  if (defined($new_ver)) {
+      for my $i (0 .. $#{$bentries}) {
+	  if ($ {$bentries}[$i]->{'ver'} eq $new_ver) {
+	      $new_idx = $ {$bentries}[$i]->{'idx'};
+	      last;
+	  }
+      }
+  } else {
+      $new_idx = $ {$bentries}[$resp]->{'idx'};
+      $new_ver = $ {$bentries}[$resp]->{'ver'};
+  }
   if ($new_ver eq $def_ver) {
       print "The default boot image has not been changed.\n";
       exit 0;
@@ -311,15 +328,18 @@ sub del_non_image_files {
     system ("echo done at: `date` >> $logfile");
 }
 
-
-# Takes the boot list entry number selected by the user and deletes
-# the corresponding image.  Deletes all of the grub config file entries
-# associated with that image and deletes the files associated
-# with that entry.
+# Deletes all of the grub config file entries associated with that
+# image and deletes the files associated with that entry.  If caller
+# provides the version string of the image to be deleted ($del_ver),
+# that version is targetted.  Otherwise, the caller must provide the
+# index into the boot entries list ($resp) to identify the image to be
+# deleted.
 #
 sub doDelete {
-  my ($resp, $orig_def_ver, $def_ter, $bentries) = @_;
-  my $del_ver = $ {$bentries}[$resp]->{'ver'};
+  my ($resp, $orig_def_ver, $def_ter, $bentries, $del_ver) = @_;
+  if (!defined($del_ver)) {
+      $del_ver = $ {$bentries}[$resp]->{'ver'};
+  }
   my $boot_dir;
 
   my $cver = curVer();
@@ -394,12 +414,13 @@ sub doDelete {
 # Main section
 # 
 
-my ($show, $del, $sel) = (undef, undef, undef);
+my ($show, $del, $sel, $list) = (undef, undef, undef, undef);
 
 GetOptions(
   'show' => \$show,
-  'delete' => \$del,
-  'select' => \$sel
+  'delete:s' => \$del,
+  'select:s' => \$sel,
+  'list' => \$list
 );
 
 if (-e $UNION_GRUB_CFG) {
@@ -433,6 +454,25 @@ if ($#{$bentries} < 0) {
   exit 1;
 }
 
+if (defined($list)) {
+    displayBootList($def_idx, $bentries, 1);
+    exit 0;
+}
+
+if (defined($sel) && ($sel ne "")) {
+    # User has specified entry to select
+    doSelect(0, $def_ver, $bentries, $sel);
+    print "Done.\n";
+    exit 0;
+}
+
+if (defined($del) && ($del ne "")) {
+    # User has specified entry to delete
+    doDelete(0, $def_ver, $def_term, $bentries, $del);
+    print "Done.\n";
+    exit 0;
+}
+
 my $msg = 'The system currently has the following image(s) installed:';
 if (defined($del)) {
   # doing delete
@@ -469,10 +509,13 @@ print "\n";
 
 $resp -= 1;
 
-if ($sel) {
+if (defined($sel)) {
   doSelect($resp, $def_ver, $bentries);
-} elsif ($del) {
+} elsif (defined($del)) {
   doDelete($resp, $def_ver, $def_term, $bentries);
+} else {
+    print "Unknown command.\n";
+    exit 1;
 }
 
 exit 0;
-- 
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