[libvirt] [PATCH v2 3/4] remote: Add a check for zero sized client-side buffers

[Erik Skultety]

Adjustment to the dispatch code which is not generated by
gendispatch.pl.

Signed-off-by: Erik Skultety <eskultet at redhat.com>
---
 src/remote/remote_daemon_dispatch.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/remote/remote_daemon_dispatch.c b/src/remote/remote_daemon_dispatch.c
index f369ffb02a..1d75ec3d37 100644
--- a/src/remote/remote_daemon_dispatch.c
+++ b/src/remote/remote_daemon_dispatch.c
@@ -2753,6 +2753,12 @@ remoteDispatchDomainGetVcpuPinInfo(virNetServerPtr server G_GNUC_UNUSED,
         goto cleanup;
     }
 
+    if (args->ncpumaps == 0) {
+        ret->cpumaps.cpumaps_len = 0;
+        rv = 0;
+        goto cleanup;
+    }
+
     if (INT_MULTIPLY_OVERFLOW(args->ncpumaps, args->maplen) ||
         args->ncpumaps * args->maplen > REMOTE_CPUMAPS_MAX) {
         virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("maxinfo * maplen > REMOTE_CPUMAPS_MAX"));
-- 
2.23.0