[libvirt] [PATCH] Avoid calling virStorageFileIsSharedFS with NULL

[Laine Stump]

  On 06/28/2010 11:54 PM, Laine Stump wrote:
> 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;
>       }
>

Because this is a trivial and obvious fix, and I didn't want anyone else 
to hit the segfault, I just pushed it.