Blame SOURCES/mailman-2.1-mailmanctl-status.patch

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diff --git a/bin/mailmanctl b/bin/mailmanctl
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index fa14a2c..e291df1 100644
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--- a/bin/mailmanctl
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+++ b/bin/mailmanctl
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@@ -36,7 +36,7 @@ in the file data/master-qrunner.pid but you normally don't need to use this
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 pid directly.  The `start', `stop', `restart', and `reopen' commands handle
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 everything for you.
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-Usage: %(PROGRAM)s [options] [ start | stop | restart | reopen ]
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+Usage: %(PROGRAM)s [options] [ start | stop | restart | reopen | status ]
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 Options:
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@@ -90,6 +90,9 @@ Commands:
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     reopen  - This will close all log files, causing them to be re-opened the
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               next time a message is written to them
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+
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+    status  - This returns a string indicating the status of the master
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+              qrunner
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 """
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 import sys
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@@ -190,6 +193,52 @@ def qrunner_state():
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         return 0
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     return 1
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+def mailman_status():
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+    # return status, pid
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+    #
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+    # These status values match the /etc/init.d status values
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+    # (at least on Red Hat), try to return equivalent status if possible
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+    # status is 0 if running,
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+    # status is 1 if dead but pid file exists
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+    # status is 2 if dead but subsys locked
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+    # status is 3 if stopped (pid returned will be 0)
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+    #
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+    #
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+    # We want any user to be able to query the status and this presents
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+    # few interesting permission problems and is why we don't use
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+    # qrunner_state(). The pidfile is only readable by the mailman owner
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+    # and group, however the lockfile is world readable. So we will
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+    # get the master pid from the lockfile. We try to determine if the
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+    # master process exists by sending it a signal. If we don't have
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+    # permission to signal the process, but the process exists we'll
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+    # get a EPERM error, if the process does not exist then we'll get
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+    # a ESRCH error.
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+
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+    try:
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+        hostname, pid, tempfile = get_lock_data()
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+    except IOError, e:
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+        if e.errno == errno.ENOENT:
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+            # Lock file didn't exist, can't be running
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+            return 3, 0
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+        else:
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+            raise
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+    if hostname <> socket.gethostname():
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+        # not running on this host
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+        return 3, 0
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+    # Find out if the process exists by calling kill with a signal 0.
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+    try:
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+        os.kill(pid, 0)
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+    except OSError, e:
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+        if e.errno == errno.ESRCH:
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+            # process does not exist
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+            return 1, pid
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+        elif e.errno == errno.EPERM:
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+            # we don't have permission signal the process but it exists
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+            return 0, pid
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+        else:
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+            raise
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+    return 0, pid
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+
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 def acquire_lock_1(force):
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     # Be sure we can acquire the master qrunner lock.  If not, it means some
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@@ -338,13 +387,15 @@ def main():
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         command = COMMASPACE.join(args)
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         usage(1, C_('Bad command: %(command)s'))
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+    command = args[0].lower()
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+
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     if checkprivs:
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         check_privs()
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     else:
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-        print C_('Warning!  You may encounter permission problems.')
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+        if command != 'status':
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+	    print C_('Warning!  You may encounter permission problems.')
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     # Handle the commands
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-    command = args[0].lower()
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     if command == 'stop':
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         # Sent the master qrunner process a SIGINT, which is equivalent to
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         # giving cron/qrunner a ctrl-c or KeyboardInterrupt.  This will
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@@ -363,6 +414,14 @@ def main():
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         if not quiet:
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             print C_('Re-opening all log files')
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         kill_watcher(signal.SIGHUP)
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+    elif command == 'status':
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+        status, pid = mailman_status()
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+        if not quiet:
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+            if status == 0:
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+                print C_("mailman (pid %(pid)d) is running...")
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+            else:
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+                print C_("mailman is stopped")
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+        sys.exit(status)
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     elif command == 'start':
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         # First, complain loudly if there's no site list.
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         check_for_site_list()