adding a migrating script (that take care of not respawning too much

applets due to multiple rpm triggers) that will migrate both old and
new type applets:
- for old applets, we just plainly kill them and restart them all
- for new ones, we just send them the SIGHUP signal and they'll take
  care herselves of restarting

1 files changed, 66 insertions, 0 deletions

diff --git a/migrate-mdvonline-applet.pl b/migrate-mdvonline-applet.pl
new file mode 100755
index 00000000..a194bd20
--- /dev/null
+++ b/migrate-mdvonline-applet.pl
@@ -0,0 +1,66 @@
+#!/usr/bin/perl
+################################################################################
+# migrate-mdvonline-applet.pl                                                  # 
+#                                                                              #
+# Copyright (C) 2006 Mandriva                                                  #
+#                                                                              #
+# Thierry Vignaud <tvignaud at mandriva dot com>                               #
+#                                                                              #
+# This program is free software; you can redistribute it and/or modify         #
+# it under the terms of the GNU General Public License Version 2 as            #
+# published by the Free Software Foundation.                                   #
+#                                                                              #
+# This program is distributed in the hope that it will be useful,              #
+# but WITHOUT ANY WARRANTY; without even the implied warranty of               #
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                #
+# GNU General Public License for more details.                                 #
+#                                                                              #
+# You should have received a copy of the GNU General Public License            #
+# along with this program; if not, write to the Free Software                  #
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.   #
+################################################################################
+
+use lib qw(/usr/lib/libDrakX);
+use standalone; # for explanations
+
+my $run_file = '/var/run/mdkapplet';
+
+my $mode = $ARGV[0];
+
+if (!-e $run_file) {
+    # create the stamp file is needed:
+    open(my $_tmp, '>>', $run_file);
+} else {
+    # exit if we're asked to restart the applets twice in less than 30 seconds
+    # (eg the trigger script is run by both removed and newly installed packages,
+    # which can lead to applet crash on SIGHUP because of race condition):
+    my $mtime = (stat($run_file))[9];
+    log::explanations("not restarting the applet (too many restart in a while)");
+    exit(0) if time() - $mtime < 30;
+}
+
+if ($mode eq 'new') {
+    system('killall', '-HUP', 'mdkapplet');
+} else {
+    #my @lines = `ps -o '$p $u %c'`;
+    my @lines = `ps -eo pid,user,cmd`;
+    
+    # we do not live process ps output in order not to account both old applets and newly started ones:
+    foreach (@lines) {
+        my ($pid, $user, $cmd) = /^\s*(\d+)\s*(\S*)\s*(.*)$/;
+        # do not match su running mdkapplet:
+        next if $cmd !~ /perl.*mdkapplet/;
+        log::explanations(qq(killing "$cmd" (pid=$pid)));
+        kill 15, $pid;
+        my $pid2 = fork();
+        if (defined $pid2) {
+            !$pid2 and do { exec('su', $user, '-c', 'mdkapplet --auto-update') or do { require POSIX; POSIX::_exit() } };
+            log::explanations("restarting applet (pid=$pid2)");
+        } else {
+            log::explanations(qq(failed to fork Mandriva Online applet for user "$user"));
+        }
+    }
+}
+
+my $atime = time();
+utime(($atime) x 2, $run_file);