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Re: [Qemu-devel] [PATCH] virtio-9p: Check the return value of llistxattr


From: Venkateswararao Jujjuri (JV)
Subject: Re: [Qemu-devel] [PATCH] virtio-9p: Check the return value of llistxattr.
Date: Sat, 30 Oct 2010 14:29:44 -0700
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.12) Gecko/20101027 Thunderbird/3.1.6

On 10/29/2010 7:52 PM, Kusanagi Kouichi wrote:
> If llistxattr returned 0, qemu aborts.
> 
> Signed-off-by: Kusanagi Kouichi <address@hidden>

Acked-by: Venkateswararao Jujjuri <address@hidden>

> ---
>  hw/virtio-9p-xattr.c |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
> 
> diff --git a/hw/virtio-9p-xattr.c b/hw/virtio-9p-xattr.c
> index 175f372..1aab081 100644
> --- a/hw/virtio-9p-xattr.c
> +++ b/hw/virtio-9p-xattr.c
> @@ -73,6 +73,9 @@ ssize_t v9fs_list_xattr(FsContext *ctx, const char *path,
> 
>      /* Get the actual len */
>      xattr_len = llistxattr(rpath(ctx, path), value, 0);
> +    if (xattr_len <= 0) {
> +        return xattr_len;
> +    }
> 
>      /* Now fetch the xattr and find the actual size */
>      orig_value = qemu_malloc(xattr_len);





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