[libvirt] [PATCH] Avoid calling virStorageFileIsSharedFS with NULL

[Laine Stump]

From: Laine Stump <laine at redhat.com>

This code was just recently added (by me) and didn't account for the
fact that stdin_path is sometimes NULL. If it's NULL, and
SetSecurityAllLabel fails, a segfault would result.
---
 src/qemu/qemu_driver.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 2a277a5..e8c5c35 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -3429,7 +3429,7 @@ static int qemudStartVMDaemon(virConnectPtr conn,
     if (driver->securityDriver &&
         driver->securityDriver->domainSetSecurityAllLabel &&
         driver->securityDriver->domainSetSecurityAllLabel(vm, stdin_path) < 0) {
-        if (virStorageFileIsSharedFS(stdin_path) != 1)
+        if (stdin_path && virStorageFileIsSharedFS(stdin_path) != 1)
             goto cleanup;
     }
 
-- 
1.7.1