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Re: [Qemu-devel] [PATCH v2 3/3] 9pfs: add cleanup operation for proxy ba
From: |
Greg Kurz |
Subject: |
Re: [Qemu-devel] [PATCH v2 3/3] 9pfs: add cleanup operation for proxy backend driver |
Date: |
Tue, 15 Nov 2016 11:26:14 +0100 |
On Mon, 14 Nov 2016 21:13:53 -0500
Li Qiang <address@hidden> wrote:
> In the init operation of proxy backend dirver, it allocates a
> V9fsProxy struct and some other resources. We should free these
> resources when the 9pfs device is unrealized. This is what this
> patch does.
>
> Signed-off-by: Li Qiang <address@hidden>
> ---
Oops I gave my R-b tag a bit to fast because...
> hw/9pfs/9p-proxy.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/hw/9pfs/9p-proxy.c b/hw/9pfs/9p-proxy.c
> index f2417b7..4b22f57 100644
> --- a/hw/9pfs/9p-proxy.c
> +++ b/hw/9pfs/9p-proxy.c
> @@ -1168,9 +1168,19 @@ static int proxy_init(FsContext *ctx)
> return 0;
> }
>
> +static void proxy_cleanup(FsContext *ctx)
> +{
> + V9fsProxy *proxy = ctx->private;
> + close(proxy->sockfd);
... this should only be done if QEMU opened the fd (i.e. V9FS_PROXY_SOCK_NAME)
> + g_free(proxy->in_iovec.iov_base);
> + g_free(proxy->out_iovec.iov_base);
> + g_free(proxy);
> +}
> +
> FileOperations proxy_ops = {
> .parse_opts = proxy_parse_opts,
> .init = proxy_init,
> + .cleanup = proxy_cleanup,
> .lstat = proxy_lstat,
> .readlink = proxy_readlink,
> .close = proxy_close,