sysinfo: implement the remote protocol

Done by editing the first three files, then running
'make -C src rpcgen', then editing src/remote_protocol-structs
to match.

* daemon/remote.c (remoteDispatchGetSysinfo): New function.
* src/remote/remote_driver.c (remoteGetSysinfo, remote_driver):
Client side serialization.
* src/remote/remote_protocol.x (remote_get_sysinfo_args)
(remote_get_sysinfo_ret): New types.
(REMOTE_PROC_GET_SYSINFO): New enum value.
* daemon/remote_dispatch_args.h: Regenerate.
* daemon/remote_dispatch_prototypes.h: Likewise.
* daemon/remote_dispatch_ret.h: Likewise.
* daemon/remote_dispatch_table.h: Likewise.
* src/remote/remote_protocol.c: Likewise.
* src/remote/remote_protocol.h: Likewise.
* src/remote_protocol-structs: Likewise.

daemon/remote.c

 /*
  * remote.c: handlers for RPC method calls
  *
- * Copyright (C) 2007-2010 Red Hat, Inc.
+ * Copyright (C) 2007-2011 Red Hat, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -584,6 +584,29 @@ remoteDispatchGetUri (struct qemud_server *server ATTRIBUTE_UNUSED,
     return 0;
 }
 
+static int
+remoteDispatchGetSysinfo (struct qemud_server *server ATTRIBUTE_UNUSED,
+                          struct qemud_client *client ATTRIBUTE_UNUSED,
+                          virConnectPtr conn,
+                          remote_message_header *hdr ATTRIBUTE_UNUSED,
+                          remote_error *rerr,
+                          remote_get_sysinfo_args *args,
+                          remote_get_sysinfo_ret *ret)
+{
+    unsigned int flags;
+    char *sysinfo;
+
+    flags = args->flags;
+    sysinfo = virConnectGetSysinfo (conn, flags);
+    if (sysinfo == NULL) {
+        remoteDispatchConnError(rerr, conn);
+        return -1;
+    }
+
+    ret->sysinfo = sysinfo;
+    return 0;
+}
+
 static int
 remoteDispatchGetMaxVcpus (struct qemud_server *server ATTRIBUTE_UNUSED,
                            struct qemud_client *client ATTRIBUTE_UNUSED,

daemon/remote_dispatch_args.h

@@ -171,3 +171,4 @@
     remote_domain_get_vcpus_flags_args val_remote_domain_get_vcpus_flags_args;
     remote_domain_open_console_args val_remote_domain_open_console_args;
     remote_domain_is_updated_args val_remote_domain_is_updated_args;
+    remote_get_sysinfo_args val_remote_get_sysinfo_args;

daemon/remote_dispatch_prototypes.h

@@ -730,6 +730,14 @@ static int remoteDispatchGetMaxVcpus(
     remote_error *err,
     remote_get_max_vcpus_args *args,
     remote_get_max_vcpus_ret *ret);
+static int remoteDispatchGetSysinfo(
+    struct qemud_server *server,
+    struct qemud_client *client,
+    virConnectPtr conn,
+    remote_message_header *hdr,
+    remote_error *err,
+    remote_get_sysinfo_args *args,
+    remote_get_sysinfo_ret *ret);
 static int remoteDispatchGetType(
     struct qemud_server *server,
     struct qemud_client *client,

daemon/remote_dispatch_ret.h

@@ -138,3 +138,4 @@
     remote_domain_get_memory_parameters_ret val_remote_domain_get_memory_parameters_ret;
     remote_domain_get_vcpus_flags_ret val_remote_domain_get_vcpus_flags_ret;
     remote_domain_is_updated_ret val_remote_domain_is_updated_ret;
+    remote_get_sysinfo_ret val_remote_get_sysinfo_ret;

daemon/remote_dispatch_table.h

@@ -1017,3 +1017,8 @@
     .args_filter = (xdrproc_t) xdr_remote_domain_is_updated_args,
     .ret_filter = (xdrproc_t) xdr_remote_domain_is_updated_ret,
 },
+{   /* GetSysinfo => 203 */
+    .fn = (dispatch_fn) remoteDispatchGetSysinfo,
+    .args_filter = (xdrproc_t) xdr_remote_get_sysinfo_args,
+    .ret_filter = (xdrproc_t) xdr_remote_get_sysinfo_ret,
+},

src/remote/remote_driver.c

@@ -1748,6 +1748,31 @@ done:
     return rv;
 }
 
+static char *
+remoteGetSysinfo (virConnectPtr conn, unsigned int flags)
+{
+    char *rv = NULL;
+    remote_get_sysinfo_args args;
+    remote_get_sysinfo_ret ret;
+    struct private_data *priv = conn->privateData;
+
+    remoteDriverLock(priv);
+
+    memset (&ret, 0, sizeof ret);
+    args.flags = flags;
+    if (call (conn, priv, 0, REMOTE_PROC_GET_SYSINFO,
+              (xdrproc_t) xdr_remote_get_sysinfo_args, (char *) &args,
+              (xdrproc_t) xdr_remote_get_sysinfo_ret, (char *) &ret) == -1)
+        goto done;
+
+    /* Caller frees this. */
+    rv = ret.sysinfo;
+
+done:
+    remoteDriverUnlock(priv);
+    return rv;
+}
+
 static int remoteIsSecure(virConnectPtr conn)
 {
     int rv = -1;
@@ -10823,7 +10848,7 @@ static virDriver remote_driver = {
     remoteGetVersion, /* version */
     remoteGetLibVersion, /* libvirtVersion */
     remoteGetHostname, /* getHostname */
-    NULL, /* getSysinfo */
+    remoteGetSysinfo, /* getSysinfo */
     remoteGetMaxVcpus, /* getMaxVcpus */
     remoteNodeGetInfo, /* nodeGetInfo */
     remoteGetCapabilities, /* getCapabilities */

src/remote/remote_protocol.c

@@ -419,6 +419,24 @@ xdr_remote_get_hostname_ret (XDR *xdrs, remote_get_hostname_ret *objp)
         return TRUE;
 }
 
+bool_t
+xdr_remote_get_sysinfo_args (XDR *xdrs, remote_get_sysinfo_args *objp)
+{
+
+         if (!xdr_u_int (xdrs, &objp->flags))
+                 return FALSE;
+        return TRUE;
+}
+
+bool_t
+xdr_remote_get_sysinfo_ret (XDR *xdrs, remote_get_sysinfo_ret *objp)
+{
+
+         if (!xdr_remote_nonnull_string (xdrs, &objp->sysinfo))
+                 return FALSE;
+        return TRUE;
+}
+
 bool_t
 xdr_remote_get_uri_ret (XDR *xdrs, remote_get_uri_ret *objp)
 {

src/remote/remote_protocol.h

@@ -242,6 +242,16 @@ struct remote_get_hostname_ret {
 };
 typedef struct remote_get_hostname_ret remote_get_hostname_ret;
 
+struct remote_get_sysinfo_args {
+        u_int flags;
+};
+typedef struct remote_get_sysinfo_args remote_get_sysinfo_args;
+
+struct remote_get_sysinfo_ret {
+        remote_nonnull_string sysinfo;
+};
+typedef struct remote_get_sysinfo_ret remote_get_sysinfo_ret;
+
 struct remote_get_uri_ret {
         remote_nonnull_string uri;
 };
@@ -2320,6 +2330,7 @@ enum remote_procedure {
         REMOTE_PROC_DOMAIN_GET_VCPUS_FLAGS = 200,
         REMOTE_PROC_DOMAIN_OPEN_CONSOLE = 201,
         REMOTE_PROC_DOMAIN_IS_UPDATED = 202,
+        REMOTE_PROC_GET_SYSINFO = 203,
 };
 typedef enum remote_procedure remote_procedure;
 
@@ -2384,6 +2395,8 @@ extern  bool_t xdr_remote_get_type_ret (XDR *, remote_get_type_ret*);
 extern  bool_t xdr_remote_get_version_ret (XDR *, remote_get_version_ret*);
 extern  bool_t xdr_remote_get_lib_version_ret (XDR *, remote_get_lib_version_ret*);
 extern  bool_t xdr_remote_get_hostname_ret (XDR *, remote_get_hostname_ret*);
+extern  bool_t xdr_remote_get_sysinfo_args (XDR *, remote_get_sysinfo_args*);
+extern  bool_t xdr_remote_get_sysinfo_ret (XDR *, remote_get_sysinfo_ret*);
 extern  bool_t xdr_remote_get_uri_ret (XDR *, remote_get_uri_ret*);
 extern  bool_t xdr_remote_get_max_vcpus_args (XDR *, remote_get_max_vcpus_args*);
 extern  bool_t xdr_remote_get_max_vcpus_ret (XDR *, remote_get_max_vcpus_ret*);
@@ -2730,6 +2743,8 @@ extern bool_t xdr_remote_get_type_ret ();
 extern bool_t xdr_remote_get_version_ret ();
 extern bool_t xdr_remote_get_lib_version_ret ();
 extern bool_t xdr_remote_get_hostname_ret ();
+extern bool_t xdr_remote_get_sysinfo_args ();
+extern bool_t xdr_remote_get_sysinfo_ret ();
 extern bool_t xdr_remote_get_uri_ret ();
 extern bool_t xdr_remote_get_max_vcpus_args ();
 extern bool_t xdr_remote_get_max_vcpus_ret ();

src/remote/remote_protocol.x

@@ -3,7 +3,7 @@
  *   remote_internal driver and libvirtd.  This protocol is
  *   internal and may change at any time.
  *
- * Copyright (C) 2006-2010 Red Hat, Inc.
+ * Copyright (C) 2006-2011 Red Hat, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -379,6 +379,14 @@ struct remote_get_hostname_ret {
     remote_nonnull_string hostname;
 };
 
+struct remote_get_sysinfo_args {
+    unsigned int flags;
+};
+
+struct remote_get_sysinfo_ret {
+    remote_nonnull_string sysinfo;
+};
+
 struct remote_get_uri_ret {
     remote_nonnull_string uri;
 };
@@ -2094,7 +2102,8 @@ enum remote_procedure {
     REMOTE_PROC_DOMAIN_GET_VCPUS_FLAGS = 200,
 
     REMOTE_PROC_DOMAIN_OPEN_CONSOLE = 201,
-    REMOTE_PROC_DOMAIN_IS_UPDATED = 202
+    REMOTE_PROC_DOMAIN_IS_UPDATED = 202,
+    REMOTE_PROC_GET_SYSINFO = 203
 
     /*
      * Notice how the entries are grouped in sets of 10 ?

src/remote_protocol-structs

@@ -107,6 +107,12 @@ struct remote_get_lib_version_ret {
 struct remote_get_hostname_ret {
 	remote_nonnull_string      hostname;
 };
+struct remote_get_sysinfo_args {
+	u_int                      flags;
+};
+struct remote_get_sysinfo_ret {
+	remote_nonnull_string      sysinfo;
+};
 struct remote_get_uri_ret {
 	remote_nonnull_string      uri;
 };