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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 <liq3ea@gmail.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Greg Kurz <groug@kaod.org>
This commit is contained in:
Li Qiang 2016-11-23 13:53:34 +01:00 committed by Greg Kurz
parent 702dbcc274
commit 971f406b77
1 changed files with 9 additions and 0 deletions
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9
hw/9pfs/9p-handle.c
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@ -649,6 +649,14 @@ out:
return ret; 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) static int handle_parse_opts(QemuOpts *opts, struct FsDriverEntry *fse)
{ {
const char *sec_model = qemu_opt_get(opts, "security_model"); 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 = { FileOperations handle_ops = {
.parse_opts = handle_parse_opts, .parse_opts = handle_parse_opts,
.init = handle_init, .init = handle_init,
.cleanup = handle_cleanup,
.lstat = handle_lstat, .lstat = handle_lstat,
.readlink = handle_readlink, .readlink = handle_readlink,
.close = handle_close, .close = handle_close,