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[for-2.8,4/4] 9pfs: add cleanup operation for proxy backend driver

Message ID 1479920298-24983-5-git-send-email-groug@kaod.org
State New
Headers show

Commit Message

Greg Kurz Nov. 23, 2016, 4:58 p.m. UTC 
From: Li Qiang <liq3ea@gmail.com>

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 <liq3ea@gmail.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Greg Kurz <groug@kaod.org>
---
 hw/9pfs/9p-proxy.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)
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Patch

diff --git a/hw/9pfs/9p-proxy.c b/hw/9pfs/9p-proxy.c
index f2417b7fd73d..f4aa7a9d70f8 100644
--- a/hw/9pfs/9p-proxy.c
+++ b/hw/9pfs/9p-proxy.c
@@ -1168,9 +1168,22 @@  static int proxy_init(FsContext *ctx)
     return 0;
 }
 
+static void proxy_cleanup(FsContext *ctx)
+{
+    V9fsProxy *proxy = ctx->private;
+
+    g_free(proxy->out_iovec.iov_base);
+    g_free(proxy->in_iovec.iov_base);
+    if (ctx->export_flags & V9FS_PROXY_SOCK_NAME) {
+        close(proxy->sockfd);
+    }
+    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,