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[libvirt] [PATCH] remote: Handle functions thar return optional strings



---
 daemon/remote.c              |   64 ------------------------------------------
 daemon/remote_generator.pl   |   28 ++++++++++++++++++
 src/remote/remote_protocol.x |    2 +-
 3 files changed, 29 insertions(+), 65 deletions(-)

diff --git a/daemon/remote.c b/daemon/remote.c
index 8e0f47d..f2e193d 100644
--- a/daemon/remote.c
+++ b/daemon/remote.c
@@ -1485,70 +1485,6 @@ cleanup:
 }
 
 static int
-remoteDispatchDomainScreenshot(struct qemud_server *server ATTRIBUTE_UNUSED,
-                               struct qemud_client *client,
-                               virConnectPtr conn,
-                               remote_message_header *hdr,
-                               remote_error *rerr,
-                               remote_domain_screenshot_args *args,
-                               remote_domain_screenshot_ret *ret)
-{
-    int rv = -1;
-    struct qemud_client_stream *stream = NULL;
-    virDomainPtr dom = NULL;
-    char *mime, **mime_p;
-
-    if (!conn) {
-        virNetError(VIR_ERR_INTERNAL_ERROR, "%s", _("connection not open"));
-        goto cleanup;
-    }
-
-    ret->mime = NULL;
-
-    if (!(dom = get_nonnull_domain (conn, args->dom)))
-        goto cleanup;
-
-    if (!(stream = remoteCreateClientStream(conn, hdr)))
-        goto cleanup;
-
-    if (!(mime = virDomainScreenshot(dom, stream->st, args->screen, args->flags)))
-        goto cleanup;
-
-    if (remoteAddClientStream(client, stream, 1) < 0) {
-        virStreamAbort(stream->st);
-        goto cleanup;
-    }
-
-    if (VIR_ALLOC(mime_p) < 0) {
-        virReportOOMError();
-        goto cleanup;
-    }
-
-    *mime_p = strdup(mime);
-    if (*mime_p == NULL) {
-        virReportOOMError();
-        VIR_FREE(mime_p);
-        goto cleanup;
-    }
-
-    ret->mime = mime_p;
-
-    rv = 0;
-
-cleanup:
-    if (rv < 0)
-        remoteDispatchError(rerr);
-    VIR_FREE(mime);
-    if (dom)
-        virDomainFree(dom);
-    if (stream && rv != 0) {
-        virStreamAbort(stream->st);
-        remoteFreeClientStream(client, stream);
-    }
-    return rv;
-}
-
-static int
 remoteDispatchNodeGetCPUStats (struct qemud_server *server ATTRIBUTE_UNUSED,
                                struct qemud_client *client ATTRIBUTE_UNUSED,
                                virConnectPtr conn,
diff --git a/daemon/remote_generator.pl b/daemon/remote_generator.pl
index bcf5fd4..d9d9ded 100755
--- a/daemon/remote_generator.pl
+++ b/daemon/remote_generator.pl
@@ -351,6 +351,7 @@ elsif ($opt_b) {
         my @optionals_list = ();
         my @getters_list = ();
         my @args_list = ();
+        my @prepare_ret_list = ();
         my @ret_list = ();
         my @free_list = ();
         my @free_list_on_error = ("remoteDispatchError(rerr);");
@@ -551,6 +552,27 @@ elsif ($opt_b) {
                     $single_ret_var = $1;
                     $single_ret_by_ref = 0;
                     $single_ret_check = " == NULL";
+                } elsif ($ret_member =~ m/^remote_string (\S+);/) {
+                    push(@vars_list, "char *$1 = NULL");
+                    push(@vars_list, "char **$1_p = NULL");
+                    push(@ret_list, "ret->$1 = $1_p;");
+                    push(@free_list, "    VIR_FREE($1);");
+                    push(@free_list_on_error, "VIR_FREE($1_p);");
+                    push(@prepare_ret_list,
+                         "if (VIR_ALLOC($1_p) < 0) {\n" .
+                         "        virReportOOMError();\n" .
+                         "        goto cleanup;\n" .
+                         "    }\n" .
+                         "    \n" .
+                         "    *$1_p = strdup($1);\n" .
+                         "    if (*$1_p == NULL) {\n" .
+                         "        virReportOOMError();\n" .
+                         "        goto cleanup;\n" .
+                         "    }\n");
+
+                    $single_ret_var = $1;
+                    $single_ret_by_ref = 0;
+                    $single_ret_check = " == NULL";
                 } elsif ($ret_member =~ m/^remote_nonnull_(domain|network|storage_pool|storage_vol|interface|node_device|secret|nwfilter|domain_snapshot) (\S+);/) {
                     my $type_name = name_to_ProcName($1);
 
@@ -864,6 +886,12 @@ elsif ($opt_b) {
             print "\n";
         }
 
+        if (@prepare_ret_list) {
+            print "    ";
+            print join("\n    ", @prepare_ret_list);
+            print "\n";
+        }
+
         if (@ret_list) {
             print "    ";
             print join("\n    ", @ret_list);
diff --git a/src/remote/remote_protocol.x b/src/remote/remote_protocol.x
index b136e41..0aa3dfb 100644
--- a/src/remote/remote_protocol.x
+++ b/src/remote/remote_protocol.x
@@ -2386,7 +2386,7 @@ enum remote_procedure {
     REMOTE_PROC_STORAGE_VOL_DOWNLOAD = 209, /* autogen autogen | readstream 1 */
     REMOTE_PROC_DOMAIN_INJECT_NMI = 210, /* autogen autogen */
 
-    REMOTE_PROC_DOMAIN_SCREENSHOT = 211, /* skipgen autogen | readstream 1 */
+    REMOTE_PROC_DOMAIN_SCREENSHOT = 211, /* autogen autogen | readstream 1 */
     REMOTE_PROC_DOMAIN_GET_STATE = 212, /* skipgen skipgen */
     REMOTE_PROC_DOMAIN_MIGRATE_BEGIN3 = 213, /* skipgen skipgen */
     REMOTE_PROC_DOMAIN_MIGRATE_PREPARE3 = 214, /* skipgen skipgen */
-- 
1.7.0.4


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