[libvirt] [PATCH] esx: Fix nodeGetInfo so cpu model fits inside nodeinfo->model

[Marcos Paulo de Souza]

Commit 6c0d0210cbcd5d647f0d882c07f077d444bc707d changed the behavior of
virStr*cpy* functions, so now the nodeGetInfo call fails. Version 4.1.0
(default for Fedora 28) works:

Model: Intel Core i7-4500U CPU @ 1.80G

Current master tries to write "Intel Core i7-4500U CPU @ 1.80GHz", but
the string is bigger than nodeinfo->model (which is a char[32]). So this
patch "cuts" the string, and presents the same output from 4.1.0.

Signed-off-by: Marcos Paulo de Souza <marcos.souza.org at gmail.com>
---

 When testing both qemu and lxc drivers, both return "x86_64", as both call
 virCapabilitiesGetNodeInfo in order the get all info the "node", but they are a
 Linux machine.

 When it comes to ESX, it returns a string from the ESX server, which is same
 info that I can find in /proc/cpuinfo of my machine (but without the () parts):
 model name      : Intel(R) Core(TM) i7-4500U CPU @ 1.80GHz

 The question is: should libvirt increase the model size, or just find a better
 way for ESX to present this info?

 src/esx/esx_driver.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/esx/esx_driver.c b/src/esx/esx_driver.c
index c2154799fa..03a84d7630 100644
--- a/src/esx/esx_driver.c
+++ b/src/esx/esx_driver.c
@@ -1317,6 +1317,8 @@ esxNodeGetInfo(virConnectPtr conn, virNodeInfoPtr nodeinfo)
                 ++ptr;
             }
 
+            /* Make sure the string fits in mode */
+            dynamicProperty->val->string[sizeof(nodeinfo->model) - 1] = '\0';
             if (virStrcpyStatic(nodeinfo->model, dynamicProperty->val->string) < 0) {
                 virReportError(VIR_ERR_INTERNAL_ERROR,
                                _("CPU Model %s too long for destination"),
-- 
2.17.1