From: Li Qiang Date: Wed, 23 Nov 2016 13:53:34 +0100 Subject: [PATCH] 9pfs: add cleanup operation for handle backend driver In the init operation of handle backend dirver, it allocates a handle_data struct and opens a mount file. We should free these resources when the 9pfs device is unrealized. This is what this patch does. Signed-off-by: Li Qiang Reviewed-by: Greg Kurz Signed-off-by: Greg Kurz (cherry picked from commit 971f406b77a6eb84e0ad27dcc416b663765aee30) --- hw/9pfs/9p-handle.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/hw/9pfs/9p-handle.c b/hw/9pfs/9p-handle.c index 3d77594..1687661 100644 --- a/hw/9pfs/9p-handle.c +++ b/hw/9pfs/9p-handle.c @@ -649,6 +649,14 @@ out: return ret; } +static void handle_cleanup(FsContext *ctx) +{ + struct handle_data *data = ctx->private; + + close(data->mountfd); + g_free(data); +} + static int handle_parse_opts(QemuOpts *opts, struct FsDriverEntry *fse) { const char *sec_model = qemu_opt_get(opts, "security_model"); @@ -671,6 +679,7 @@ static int handle_parse_opts(QemuOpts *opts, struct FsDriverEntry *fse) FileOperations handle_ops = { .parse_opts = handle_parse_opts, .init = handle_init, + .cleanup = handle_cleanup, .lstat = handle_lstat, .readlink = handle_readlink, .close = handle_close,