From: Li Qiang <liq...@gmail.com>
Currently, the backend of VirtFS doesn't have a cleanup
function. This will lead resource leak issues if the backed
driver allocates resources. This patch addresses this issue.
Signed-off-by: Li Qiang <liq...@gmail.com>
Reviewed-by: Greg Kurz <gr...@kaod.org>
Signed-off-by: Greg Kurz <gr...@kaod.org>
---
fsdev/file-op-9p.h | 1 +
hw/9pfs/9p.c | 6 ++++++
2 files changed, 7 insertions(+)
diff --git a/fsdev/file-op-9p.h b/fsdev/file-op-9p.h
index 6db9feac8f1c..a56dc8488dfc 100644
--- a/fsdev/file-op-9p.h
+++ b/fsdev/file-op-9p.h
@@ -100,6 +100,7 @@ struct FileOperations
{
int (*parse_opts)(QemuOpts *, struct FsDriverEntry *);
int (*init)(struct FsContext *);
+ void (*cleanup)(struct FsContext *);
int (*lstat)(FsContext *, V9fsPath *, struct stat *);
ssize_t (*readlink)(FsContext *, V9fsPath *, char *, size_t);
int (*chmod)(FsContext *, V9fsPath *, FsCred *);
diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
index 087b5c98eec1..faebd91f5fab 100644
--- a/hw/9pfs/9p.c
+++ b/hw/9pfs/9p.c
@@ -3521,6 +3521,9 @@ int v9fs_device_realize_common(V9fsState *s, Error **errp)
rc = 0;
out:
if (rc) {
+ if (s->ops->cleanup && s->ctx.private) {
+ s->ops->cleanup(&s->ctx);
+ }
g_free(s->tag);
g_free(s->ctx.fs_root);
v9fs_path_free(&path);
@@ -3530,6 +3533,9 @@ out:
void v9fs_device_unrealize_common(V9fsState *s, Error **errp)
{
+ if (s->ops->cleanup) {
+ s->ops->cleanup(&s->ctx);
+ }
g_free(s->tag);
g_free(s->ctx.fs_root);
}
--
2.7.4
