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1 From 55c732acd013b6ac979b6e1f5432a301481879ca Mon Sep 17 00:00:00 2001
2 From: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
3 Date: Sun, 15 Aug 2010 22:56:49 +0100
4 Subject: [PATCH] Check if the deamon isn't already running
5
6 ---
7  avahi-client/client.c |   29 +++++++++++++++++++++++++----
8  1 files changed, 25 insertions(+), 4 deletions(-)
9
10 diff --git a/avahi-client/client.c b/avahi-client/client.c
11 index be675ad..c7ece4a 100644
12 --- a/avahi-client/client.c
13 +++ b/avahi-client/client.c
14 @@ -478,6 +478,7 @@ static DBusConnection* avahi_dbus_bus_get(DBusError *error) {
15  AvahiClient *avahi_client_new(const AvahiPoll *poll_api, AvahiClientFlags flags, AvahiClientCallback callback, void *userdata, int *ret_error) {
16      AvahiClient *client = NULL;
17      DBusError error;
18 +    int daemon_running = 0;
19  
20      avahi_init_i18n();
21  
22 @@ -560,12 +561,33 @@ AvahiClient *avahi_client_new(const AvahiPoll *poll_api, AvahiClientFlags flags,
23      if (dbus_error_is_set(&error))
24          goto fail;
25  
26 -    if (!dbus_bus_start_service_by_name(client->bus, AVAHI_DBUS_NAME, 0, NULL, &error)) {
27  
28 -        /* We free the error so its not set, that way the fail target
29 -         * will return the NO_DAEMON error rather than a DBUS error */
30 +    /* Check if the process already exists on the bus, otherwise try to start
31 +     * it. */
32 +    if (!dbus_bus_name_has_owner (client->bus, AVAHI_DBUS_NAME, &error)) {
33 +      dbus_error_free(&error);
34 +      daemon_running = 0;
35 +    } else {
36 +      daemon_running = 1;
37 +    }
38 +
39 +    if (!daemon_running &&
40 +        !dbus_bus_start_service_by_name(client->bus,
41 +          AVAHI_DBUS_NAME, 0, NULL, &error)) {
42          dbus_error_free(&error);
43 +    } else {
44 +      daemon_running = 1;
45 +    }
46  
47 +    /* Re-check something else didn't start the daemon */
48 +    if (!daemon_running &&
49 +        !dbus_bus_name_has_owner (client->bus, AVAHI_DBUS_NAME, &error)) {
50 +      dbus_error_free(&error);
51 +    } else {
52 +      daemon_running = 1;
53 +    }
54 +
55 +    if (!daemon_running) {
56          if (!(flags & AVAHI_CLIENT_NO_FAIL)) {
57  
58              if (ret_error)
59 @@ -577,7 +599,6 @@ AvahiClient *avahi_client_new(const AvahiPoll *poll_api, AvahiClientFlags flags,
60          /* The user doesn't want this call to fail if the daemon is not
61           * available, so let's return succesfully */
62          client_set_state(client, AVAHI_CLIENT_CONNECTING);
63 -
64      } else {
65  
66          if (init_server(client, ret_error) < 0)
67 -- 
68 1.7.1
69
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