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libvirt/libvirt-dbus.patch

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From: Alexander Larsson <alexl@redhat.com>
To: libvir-list@redhat.com
Cc: Alexander Larsson <alexl@redhat.com>
Subject: [PATCH 1/2] virdbus: Add virDBusGetSessionBus helper
Date: Tue, 9 Oct 2012 17:26:28 +0200
Message-Id: <1349796389-6122-2-git-send-email-alexl@redhat.com>
In-Reply-To: <1349796389-6122-1-git-send-email-alexl@redhat.com>
References: <1349796389-6122-1-git-send-email-alexl@redhat.com>
X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23
This splits out some common code from virDBusGetSystemBus and
uses it to implement a new virDBusGetSessionBus helper.
---
src/libvirt_private.syms | 1 +
src/util/virdbus.c | 84 ++++++++++++++++++++++++++++++++++++------------
src/util/virdbus.h | 1 +
3 files changed, 66 insertions(+), 20 deletions(-)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index a8c81e7..88f1b2f 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1310,6 +1310,7 @@ virConsoleOpen;
# virdbus.h
virDBusGetSystemBus;
+virDBusGetSessionBus;
# virdomainlist.h
diff --git a/src/util/virdbus.c b/src/util/virdbus.c
index 4acce12..2dc7265 100644
--- a/src/util/virdbus.c
+++ b/src/util/virdbus.c
@@ -32,40 +32,49 @@
#ifdef HAVE_DBUS
static DBusConnection *systembus = NULL;
-static virOnceControl once = VIR_ONCE_CONTROL_INITIALIZER;
-static DBusError dbuserr;
+static DBusConnection *sessionbus = NULL;
+static virOnceControl systemonce = VIR_ONCE_CONTROL_INITIALIZER;
+static virOnceControl sessiononce = VIR_ONCE_CONTROL_INITIALIZER;
+static DBusError systemdbuserr;
+static DBusError sessiondbuserr;
static dbus_bool_t virDBusAddWatch(DBusWatch *watch, void *data);
static void virDBusRemoveWatch(DBusWatch *watch, void *data);
static void virDBusToggleWatch(DBusWatch *watch, void *data);
-static void virDBusSystemBusInit(void)
+static DBusConnection *virDBusBusInit(DBusBusType type, DBusError *dbuserr)
{
+ DBusConnection *bus;
+
/* Allocate and initialize a new HAL context */
dbus_connection_set_change_sigpipe(FALSE);
dbus_threads_init_default();
- dbus_error_init(&dbuserr);
- if (!(systembus = dbus_bus_get(DBUS_BUS_SYSTEM, &dbuserr)))
- return;
+ dbus_error_init(dbuserr);
+ if (!(bus = dbus_bus_get(type, dbuserr)))
+ return NULL;
- dbus_connection_set_exit_on_disconnect(systembus, FALSE);
+ dbus_connection_set_exit_on_disconnect(bus, FALSE);
/* Register dbus watch callbacks */
- if (!dbus_connection_set_watch_functions(systembus,
+ if (!dbus_connection_set_watch_functions(bus,
virDBusAddWatch,
virDBusRemoveWatch,
virDBusToggleWatch,
- NULL, NULL)) {
- systembus = NULL;
- return;
+ bus, NULL)) {
+ return NULL;
}
+ return bus;
}
+static void virDBusSystemBusInit(void)
+{
+ systembus = virDBusBusInit (DBUS_BUS_SYSTEM, &systemdbuserr);
+}
DBusConnection *virDBusGetSystemBus(void)
{
- if (virOnce(&once, virDBusSystemBusInit) < 0) {
+ if (virOnce(&systemonce, virDBusSystemBusInit) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to run one time DBus initializer"));
return NULL;
@@ -74,7 +83,7 @@ DBusConnection *virDBusGetSystemBus(void)
if (!systembus) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unable to get DBus system bus connection: %s"),
- dbuserr.message ? dbuserr.message : "watch setup failed");
+ systemdbuserr.message ? systemdbuserr.message : "watch setup failed");
return NULL;
}
@@ -82,13 +91,45 @@ DBusConnection *virDBusGetSystemBus(void)
}
+static void virDBusSessionBusInit(void)
+{
+ sessionbus = virDBusBusInit (DBUS_BUS_SESSION, &sessiondbuserr);
+}
+
+DBusConnection *virDBusGetSessionBus(void)
+{
+ if (virOnce(&sessiononce, virDBusSessionBusInit) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("Unable to run one time DBus initializer"));
+ return NULL;
+ }
+
+ if (!sessionbus) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Unable to get DBus session bus connection: %s"),
+ sessiondbuserr.message ? sessiondbuserr.message : "watch setup failed");
+ return NULL;
+ }
+
+ return sessionbus;
+}
+
+struct virDBusWatch
+{
+ int watch;
+ DBusConnection *bus;
+};
+
static void virDBusWatchCallback(int fdatch ATTRIBUTE_UNUSED,
int fd ATTRIBUTE_UNUSED,
int events, void *opaque)
{
DBusWatch *watch = opaque;
+ struct virDBusWatch *info;
int dbus_flags = 0;
+ info = dbus_watch_get_data(watch);
+
if (events & VIR_EVENT_HANDLE_READABLE)
dbus_flags |= DBUS_WATCH_READABLE;
if (events & VIR_EVENT_HANDLE_WRITABLE)
@@ -100,7 +141,7 @@ static void virDBusWatchCallback(int fdatch ATTRIBUTE_UNUSED,
(void)dbus_watch_handle(watch, dbus_flags);
- while (dbus_connection_dispatch(systembus) == DBUS_DISPATCH_DATA_REMAINS)
+ while (dbus_connection_dispatch(info->bus) == DBUS_DISPATCH_DATA_REMAINS)
/* keep dispatching while data remains */;
}
@@ -120,18 +161,13 @@ static int virDBusTranslateWatchFlags(int dbus_flags)
}
-struct virDBusWatch
-{
- int watch;
-};
-
static void virDBusWatchFree(void *data) {
struct virDBusWatch *info = data;
VIR_FREE(info);
}
static dbus_bool_t virDBusAddWatch(DBusWatch *watch,
- void *data ATTRIBUTE_UNUSED)
+ void *data)
{
int flags = 0;
int fd;
@@ -148,6 +184,7 @@ static dbus_bool_t virDBusAddWatch(DBusWatch *watch,
# else
fd = dbus_watch_get_fd(watch);
# endif
+ info->bus = (DBusConnection *)data;
info->watch = virEventAddHandle(fd, flags,
virDBusWatchCallback,
watch, NULL);
@@ -194,4 +231,11 @@ DBusConnection *virDBusGetSystemBus(void)
return NULL;
}
+DBusConnection *virDBusGetSessionBus(void)
+{
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ "%s", _("DBus support not compiled into this binary"));
+ return NULL;
+}
+
#endif /* ! HAVE_DBUS */
diff --git a/src/util/virdbus.h b/src/util/virdbus.h
index 27dca00..e443fbe 100644
--- a/src/util/virdbus.h
+++ b/src/util/virdbus.h
@@ -30,5 +30,6 @@
# include "internal.h"
DBusConnection *virDBusGetSystemBus(void);
+DBusConnection *virDBusGetSessionBus(void);
#endif /* __VIR_DBUS_H__ */
--
1.7.12.1
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