hw/9pfs: Add yeild support for clunk related coroutine

This include lsetxattr, lremovexattr, closedir and close.
Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>

hw/9pfs/codir.c

@@ -99,3 +99,19 @@ int v9fs_co_opendir(V9fsState *s, V9fsFidState *fidp)
         });
     return err;
 }
+
+int v9fs_co_closedir(V9fsState *s, V9fsFidState *fidp)
+{
+    int err;
+    DIR *dir;
+
+    dir = fidp->fs.dir;
+    v9fs_co_run_in_worker(
+        {
+            err = s->ops->closedir(&s->ctx, dir);
+            if (err < 0) {
+                err = -errno;
+            }
+        });
+    return err;
+}

hw/9pfs/cofile.c

@@ -81,3 +81,19 @@ int v9fs_co_open2(V9fsState *s, V9fsFidState *fidp, char *fullname, gid_t gid,
         });
     return err;
 }
+
+int v9fs_co_close(V9fsState *s, V9fsFidState *fidp)
+{
+    int fd;
+    int err;
+
+    fd = fidp->fs.fd;
+    v9fs_co_run_in_worker(
+        {
+            err = s->ops->close(&s->ctx, fd);
+            if (err < 0) {
+                err = -errno;
+            }
+        });
+    return err;
+}

hw/9pfs/coxattr.c

@@ -48,3 +48,37 @@ int v9fs_co_lgetxattr(V9fsState *s, V9fsString *path,
         });
     return err;
 }
+
+int v9fs_co_lsetxattr(V9fsState *s, V9fsString *path,
+                      V9fsString *xattr_name, void *value,
+                      size_t size, int flags)
+{
+    int err;
+
+    v9fs_co_run_in_worker(
+        {
+            err = s->ops->lsetxattr(&s->ctx, path->data,
+                                    xattr_name->data, value,
+                                    size, flags);
+            if (err < 0) {
+                err = -errno;
+            }
+        });
+    return err;
+}
+
+int v9fs_co_lremovexattr(V9fsState *s, V9fsString *path,
+                         V9fsString *xattr_name)
+{
+    int err;
+
+    v9fs_co_run_in_worker(
+        {
+            err = s->ops->lremovexattr(&s->ctx, path->data,
+                                       xattr_name->data);
+            if (err < 0) {
+                err = -errno;
+            }
+        });
+    return err;
+}

hw/9pfs/virtio-9p-coth.h

@@ -80,4 +80,9 @@ extern int v9fs_co_fstat(V9fsState *, int, struct stat *);
 extern int v9fs_co_opendir(V9fsState *, V9fsFidState *);
 extern int v9fs_co_open(V9fsState *, V9fsFidState *, int);
 extern int v9fs_co_open2(V9fsState *, V9fsFidState *, char *, gid_t, int, int);
+extern int v9fs_co_lsetxattr(V9fsState *, V9fsString *, V9fsString *,
+                             void *, size_t, int);
+extern int v9fs_co_lremovexattr(V9fsState *, V9fsString *, V9fsString *);
+extern int v9fs_co_closedir(V9fsState *, V9fsFidState *);
+extern int v9fs_co_close(V9fsState *, V9fsFidState *);
 #endif