[libvirt] [PATCH] qemud: don't dereference NULL on failed virGetUserDirectory

[Jim Meyering]

I spotted this while merging my unix_sock_dir changes:

>From 04373207bc838c31bd07596df3c676476e73c983 Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering at redhat.com>
Date: Fri, 23 Jan 2009 13:59:28 +0100
Subject: [PATCH] qemud: don't dereference NULL on failed virGetUserDirectory

* qemud/qemud.c (qemudInitPaths): Check for OOM.
---
 qemud/qemud.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/qemud/qemud.c b/qemud/qemud.c
index 55f31d5..84034f3 100644
--- a/qemud/qemud.c
+++ b/qemud/qemud.c
@@ -719,6 +719,10 @@ static int qemudInitPaths(struct qemud_server *server,
             goto snprintf_error;
     } else {
         char *userdir = virGetUserDirectory(NULL, uid);
+        if (userdir == NULL) {
+            /* give no diagnostic here; virGetUserDirectory reports OOM  */
+            return -1;
+        }

         if (snprintf(sockname, maxlen, "@%s/.libvirt/libvirt-sock", userdir) >= maxlen) {
             VIR_FREE(userdir);
--
1.6.1.354.gd9e51