Use virNetServerGetProgram() to determine the virNetServerProgram
instead of using hard coded global variables. This allows us to remove
the global variables @remoteProgram and @qemuProgram as they're now no
longer necessary.
Signed-off-by: Marc Hartmayer <mhartmay@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Boris Fiuczynski <fiuczy@xxxxxxxxxxxxxxxxxx>
---
Note: I'm not 100% sure that there is no case where the lock for
@client is already held by the thread which is calling
virNetServerGetProgram and thus the lock order would be violated (the
lock order has to be @server -> @client in the violating case it would
be @client -> @server and therefore a deadlock might occur).
---
src/libvirt_remote.syms | 1 +
src/remote/remote_daemon.c | 4 +--
src/remote/remote_daemon.h | 3 ---
src/remote/remote_daemon_dispatch.c | 52 ++++++++++++++++++-------------------
src/rpc/gendispatch.pl | 2 ++
src/rpc/virnetserver.c | 23 ++++++++++++++++
src/rpc/virnetserver.h | 2 ++
7 files changed, 56 insertions(+), 31 deletions(-)
diff --git a/src/libvirt_remote.syms b/src/libvirt_remote.syms
index 97e22275b980..c31b16cd5909 100644
--- a/src/libvirt_remote.syms
+++ b/src/libvirt_remote.syms
@@ -120,6 +120,7 @@ virNetServerGetCurrentUnauthClients;
virNetServerGetMaxClients;
virNetServerGetMaxUnauthClients;
virNetServerGetName;
+virNetServerGetProgram;
virNetServerGetThreadPoolParameters;
virNetServerHasClients;
virNetServerNew;
diff --git a/src/remote/remote_daemon.c b/src/remote/remote_daemon.c
index 078430f91c97..64f67ef2fefb 100644
--- a/src/remote/remote_daemon.c
+++ b/src/remote/remote_daemon.c
@@ -71,8 +71,6 @@ VIR_LOG_INIT("daemon.libvirtd");
#if WITH_SASL
virNetSASLContextPtr saslCtxt = NULL;
#endif
-virNetServerProgramPtr remoteProgram = NULL;
-virNetServerProgramPtr qemuProgram = NULL;
volatile bool driversInitialized = false;
@@ -1061,6 +1059,8 @@ int main(int argc, char **argv) {
virNetServerPtr srv = NULL;
virNetServerPtr srvAdm = NULL;
virNetServerProgramPtr adminProgram = NULL;
+ virNetServerProgramPtr qemuProgram = NULL;
+ virNetServerProgramPtr remoteProgram = NULL;
virNetServerProgramPtr lxcProgram = NULL;
char *remote_config_file = NULL;
int statuswrite = -1;
diff --git a/src/remote/remote_daemon.h b/src/remote/remote_daemon.h
index 4467f71da910..93f2e1f531b0 100644
--- a/src/remote/remote_daemon.h
+++ b/src/remote/remote_daemon.h
@@ -82,7 +82,4 @@ struct daemonClientPrivate {
# if WITH_SASL
extern virNetSASLContextPtr saslCtxt;
# endif
-extern virNetServerProgramPtr remoteProgram;
-extern virNetServerProgramPtr qemuProgram;
-
#endif /* __REMOTE_DAEMON_H__ */
diff --git a/src/remote/remote_daemon_dispatch.c b/src/remote/remote_daemon_dispatch.c
index 95940ffdeefe..3dce6195230e 100644
--- a/src/remote/remote_daemon_dispatch.c
+++ b/src/remote/remote_daemon_dispatch.c
@@ -3808,9 +3808,9 @@ remoteDispatchNodeDeviceGetParent(virNetServerPtr server ATTRIBUTE_UNUSED,
}
static int
-remoteDispatchConnectRegisterCloseCallback(virNetServerPtr server ATTRIBUTE_UNUSED,
+remoteDispatchConnectRegisterCloseCallback(virNetServerPtr server,
virNetServerClientPtr client,
- virNetMessagePtr msg ATTRIBUTE_UNUSED,
+ virNetMessagePtr msg,
virNetMessageErrorPtr rerr)
{
int rv = -1;
@@ -3828,7 +3828,7 @@ remoteDispatchConnectRegisterCloseCallback(virNetServerPtr server ATTRIBUTE_UNUS
if (VIR_ALLOC(callback) < 0)
goto cleanup;
callback->client = virObjectRef(client);
- callback->program = virObjectRef(remoteProgram);
+ callback->program = virObjectRef(virNetServerGetProgram(server, msg));
/* eventID, callbackID, and legacy are not used */
callback->eventID = -1;
callback->callbackID = -1;
@@ -3912,7 +3912,7 @@ remoteDispatchConnectDomainEventRegister(virNetServerPtr server ATTRIBUTE_UNUSED
if (VIR_ALLOC(callback) < 0)
goto cleanup;
callback->client = virObjectRef(client);
- callback->program = virObjectRef(remoteProgram);
+ callback->program = virObjectRef(virNetServerGetProgram(server, msg));
callback->eventID = VIR_DOMAIN_EVENT_ID_LIFECYCLE;
callback->callbackID = -1;
callback->legacy = true;
@@ -4110,9 +4110,9 @@ remoteDispatchDomainGetState(virNetServerPtr server ATTRIBUTE_UNUSED,
* VIR_DRV_SUPPORTS_FEATURE(VIR_DRV_FEATURE_REMOTE_EVENT_CALLBACK),
* and must not mix the two styles. */
static int
-remoteDispatchConnectDomainEventRegisterAny(virNetServerPtr server ATTRIBUTE_UNUSED,
+remoteDispatchConnectDomainEventRegisterAny(virNetServerPtr server,
virNetServerClientPtr client,
- virNetMessagePtr msg ATTRIBUTE_UNUSED,
+ virNetMessagePtr msg,
virNetMessageErrorPtr rerr ATTRIBUTE_UNUSED,
remote_connect_domain_event_register_any_args *args)
{
@@ -4149,7 +4149,7 @@ remoteDispatchConnectDomainEventRegisterAny(virNetServerPtr server ATTRIBUTE_UNU
if (VIR_ALLOC(callback) < 0)
goto cleanup;
callback->client = virObjectRef(client);
- callback->program = virObjectRef(remoteProgram);
+ callback->program = virObjectRef(virNetServerGetProgram(server, msg));
callback->eventID = args->eventID;
callback->callbackID = -1;
callback->legacy = true;
@@ -4185,9 +4185,9 @@ remoteDispatchConnectDomainEventRegisterAny(virNetServerPtr server ATTRIBUTE_UNU
static int
-remoteDispatchConnectDomainEventCallbackRegisterAny(virNetServerPtr server ATTRIBUTE_UNUSED,
+remoteDispatchConnectDomainEventCallbackRegisterAny(virNetServerPtr server,
virNetServerClientPtr client,
- virNetMessagePtr msg ATTRIBUTE_UNUSED,
+ virNetMessagePtr msg,
virNetMessageErrorPtr rerr ATTRIBUTE_UNUSED,
remote_connect_domain_event_callback_register_any_args *args,
remote_connect_domain_event_callback_register_any_ret *ret)
@@ -4226,7 +4226,7 @@ remoteDispatchConnectDomainEventCallbackRegisterAny(virNetServerPtr server ATTRI
if (VIR_ALLOC(callback) < 0)
goto cleanup;
callback->client = virObjectRef(client);
- callback->program = virObjectRef(remoteProgram);
+ callback->program = virObjectRef(virNetServerGetProgram(server, msg));
callback->eventID = args->eventID;
callback->callbackID = -1;
ref = callback;
@@ -5352,7 +5352,7 @@ remoteDispatchDomainMigratePrepareTunnel3Params(virNetServerPtr server ATTRIBUTE
goto cleanup;
if (!(st = virStreamNew(priv->conn, VIR_STREAM_NONBLOCK)) ||
- !(stream = daemonCreateClientStream(client, st, remoteProgram,
+ !(stream = daemonCreateClientStream(client, st, virNetServerGetProgram(server, msg),
&msg->header, false)))
goto cleanup;
@@ -5709,9 +5709,9 @@ static int remoteDispatchDomainCreateWithFiles(virNetServerPtr server ATTRIBUTE_
static int
-remoteDispatchConnectNetworkEventRegisterAny(virNetServerPtr server ATTRIBUTE_UNUSED,
+remoteDispatchConnectNetworkEventRegisterAny(virNetServerPtr server,
virNetServerClientPtr client,
- virNetMessagePtr msg ATTRIBUTE_UNUSED,
+ virNetMessagePtr msg,
virNetMessageErrorPtr rerr ATTRIBUTE_UNUSED,
remote_connect_network_event_register_any_args *args,
remote_connect_network_event_register_any_ret *ret)
@@ -5750,7 +5750,7 @@ remoteDispatchConnectNetworkEventRegisterAny(virNetServerPtr server ATTRIBUTE_UN
if (VIR_ALLOC(callback) < 0)
goto cleanup;
callback->client = virObjectRef(client);
- callback->program = virObjectRef(remoteProgram);
+ callback->program = virObjectRef(virNetServerGetProgram(server, msg));
callback->eventID = args->eventID;
callback->callbackID = -1;
ref = callback;
@@ -5832,9 +5832,9 @@ remoteDispatchConnectNetworkEventDeregisterAny(virNetServerPtr server ATTRIBUTE_
}
static int
-remoteDispatchConnectStoragePoolEventRegisterAny(virNetServerPtr server ATTRIBUTE_UNUSED,
+remoteDispatchConnectStoragePoolEventRegisterAny(virNetServerPtr server,
virNetServerClientPtr client,
- virNetMessagePtr msg ATTRIBUTE_UNUSED,
+ virNetMessagePtr msg,
virNetMessageErrorPtr rerr ATTRIBUTE_UNUSED,
remote_connect_storage_pool_event_register_any_args *args,
remote_connect_storage_pool_event_register_any_ret *ret)
@@ -5873,7 +5873,7 @@ remoteDispatchConnectStoragePoolEventRegisterAny(virNetServerPtr server ATTRIBUT
if (VIR_ALLOC(callback) < 0)
goto cleanup;
callback->client = virObjectRef(client);
- callback->program = virObjectRef(remoteProgram);
+ callback->program = virObjectRef(virNetServerGetProgram(server, msg));
callback->eventID = args->eventID;
callback->callbackID = -1;
ref = callback;
@@ -5954,9 +5954,9 @@ remoteDispatchConnectStoragePoolEventDeregisterAny(virNetServerPtr server ATTRIB
}
static int
-remoteDispatchConnectNodeDeviceEventRegisterAny(virNetServerPtr server ATTRIBUTE_UNUSED,
+remoteDispatchConnectNodeDeviceEventRegisterAny(virNetServerPtr server,
virNetServerClientPtr client,
- virNetMessagePtr msg ATTRIBUTE_UNUSED,
+ virNetMessagePtr msg,
virNetMessageErrorPtr rerr ATTRIBUTE_UNUSED,
remote_connect_node_device_event_register_any_args *args,
remote_connect_node_device_event_register_any_ret *ret)
@@ -5995,7 +5995,7 @@ remoteDispatchConnectNodeDeviceEventRegisterAny(virNetServerPtr server ATTRIBUTE
if (VIR_ALLOC(callback) < 0)
goto cleanup;
callback->client = virObjectRef(client);
- callback->program = virObjectRef(remoteProgram);
+ callback->program = virObjectRef(virNetServerGetProgram(server, msg));
callback->eventID = args->eventID;
callback->callbackID = -1;
ref = callback;
@@ -6076,9 +6076,9 @@ remoteDispatchConnectNodeDeviceEventDeregisterAny(virNetServerPtr server ATTRIBU
}
static int
-remoteDispatchConnectSecretEventRegisterAny(virNetServerPtr server ATTRIBUTE_UNUSED,
+remoteDispatchConnectSecretEventRegisterAny(virNetServerPtr server,
virNetServerClientPtr client,
- virNetMessagePtr msg ATTRIBUTE_UNUSED,
+ virNetMessagePtr msg,
virNetMessageErrorPtr rerr ATTRIBUTE_UNUSED,
remote_connect_secret_event_register_any_args *args,
remote_connect_secret_event_register_any_ret *ret)
@@ -6117,7 +6117,7 @@ remoteDispatchConnectSecretEventRegisterAny(virNetServerPtr server ATTRIBUTE_UNU
if (VIR_ALLOC(callback) < 0)
goto cleanup;
callback->client = virObjectRef(client);
- callback->program = virObjectRef(remoteProgram);
+ callback->program = virObjectRef(virNetServerGetProgram(server, msg));
callback->eventID = args->eventID;
callback->callbackID = -1;
ref = callback;
@@ -6198,9 +6198,9 @@ remoteDispatchConnectSecretEventDeregisterAny(virNetServerPtr server ATTRIBUTE_U
}
static int
-qemuDispatchConnectDomainMonitorEventRegister(virNetServerPtr server ATTRIBUTE_UNUSED,
+qemuDispatchConnectDomainMonitorEventRegister(virNetServerPtr server,
virNetServerClientPtr client,
- virNetMessagePtr msg ATTRIBUTE_UNUSED,
+ virNetMessagePtr msg,
virNetMessageErrorPtr rerr ATTRIBUTE_UNUSED,
qemu_connect_domain_monitor_event_register_args *args,
qemu_connect_domain_monitor_event_register_ret *ret)
@@ -6234,7 +6234,7 @@ qemuDispatchConnectDomainMonitorEventRegister(virNetServerPtr server ATTRIBUTE_U
if (VIR_ALLOC(callback) < 0)
goto cleanup;
callback->client = virObjectRef(client);
- callback->program = virObjectRef(qemuProgram);
+ callback->program = virObjectRef(virNetServerGetProgram(server, msg));
callback->eventID = -1;
callback->callbackID = -1;
ref = callback;
diff --git a/src/rpc/gendispatch.pl b/src/rpc/gendispatch.pl
index fb15cc4849bc..725319bf8da4 100755
--- a/src/rpc/gendispatch.pl
+++ b/src/rpc/gendispatch.pl
@@ -990,6 +990,7 @@ elsif ($mode eq "server") {
if ($call->{streamflag} ne "none") {
print " virStreamPtr st = NULL;\n";
print " daemonClientStreamPtr stream = NULL;\n";
+ print " virNetServerProgramPtr remoteProgram = NULL;\n";
if ($call->{sparseflag} ne "none") {
print " const bool sparse = args->flags & $call->{sparseflag};\n"
} else {
@@ -1037,6 +1038,7 @@ elsif ($mode eq "server") {
print " if (!(st = virStreamNew(priv->conn, VIR_STREAM_NONBLOCK)))\n";
print " goto cleanup;\n";
print "\n";
+ print " remoteProgram = virNetServerGetProgram(server, msg);\n";
print " if (!(stream = daemonCreateClientStream(client, st, remoteProgram, &msg->header, sparse)))\n";
print " goto cleanup;\n";
print "\n";
diff --git a/src/rpc/virnetserver.c b/src/rpc/virnetserver.c
index 4cd42ad7fd40..b1ff4a0cd751 100644
--- a/src/rpc/virnetserver.c
+++ b/src/rpc/virnetserver.c
@@ -205,6 +205,29 @@ virNetServerGetProgramLocked(virNetServerPtr srv,
}
+/**
+ * virNetServerGetProgram:
+ * @srv: server (must NOT be locked by the caller)
+ * @msg: message
+ *
+ * Searches @srv for the right program for a given message @msg.
+ *
+ * Returns a pointer to the server program or NULL if not found.
+ */
+virNetServerProgramPtr
+virNetServerGetProgram(virNetServerPtr srv,
+ virNetMessagePtr msg)
+{
+ virNetServerProgramPtr ret = NULL;
+
+ virObjectLock(srv);
+ ret = virNetServerGetProgramLocked(srv, msg);
+ virObjectUnlock(srv);
+
+ return ret;
+}
+
+
static int virNetServerDispatchNewMessage(virNetServerClientPtr client,
virNetMessagePtr msg,
void *opaque)
diff --git a/src/rpc/virnetserver.h b/src/rpc/virnetserver.h
index a79c39fdb2e7..1867e46664ba 100644
--- a/src/rpc/virnetserver.h
+++ b/src/rpc/virnetserver.h
@@ -76,6 +76,8 @@ int virNetServerSetTLSContext(virNetServerPtr srv,
virNetTLSContextPtr tls);
# endif
+virNetServerProgramPtr virNetServerGetProgram(virNetServerPtr srv,
+ virNetMessagePtr msg);
int virNetServerAddClient(virNetServerPtr srv,
virNetServerClientPtr client);
--
2.13.4
--
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