9pfs-nested-$(CONFIG_VIRTFS) = virtio-9p.o virtio-9p-debug.o
9pfs-nested-$(CONFIG_VIRTFS) += virtio-9p-local.o virtio-9p-xattr.o
9pfs-nested-$(CONFIG_VIRTFS) += virtio-9p-xattr-user.o virtio-9p-posix-acl.o
-9pfs-nested-$(CONFIG_VIRTFS) += virtio-9p-coth.o
+9pfs-nested-$(CONFIG_VIRTFS) += virtio-9p-coth.o cofs.o
hw-obj-$(CONFIG_REALLY_VIRTFS) += $(addprefix 9pfs/, $(9pfs-nested-y))
$(addprefix 9pfs/, $(9pfs-nested-y)): QEMU_CFLAGS+=$(GLIB_CFLAGS)
--- /dev/null
+
+/*
+ * Virtio 9p backend
+ *
+ * Copyright IBM, Corp. 2011
+ *
+ * Authors:
+ * Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#include "fsdev/qemu-fsdev.h"
+#include "qemu-thread.h"
+#include "qemu-coroutine.h"
+#include "virtio-9p-coth.h"
+
+int v9fs_co_readlink(V9fsState *s, V9fsString *path, V9fsString *buf)
+{
+ int err;
+ ssize_t len;
+
+ buf->data = qemu_malloc(PATH_MAX);
+ v9fs_co_run_in_worker(
+ {
+ len = s->ops->readlink(&s->ctx, path->data,
+ buf->data, PATH_MAX - 1);
+ if (len > -1) {
+ buf->size = len;
+ buf->data[len] = 0;
+ err = 0;
+ } else {
+ err = -errno;
+ }
+ });
+ if (err) {
+ qemu_free(buf->data);
+ buf->data = NULL;
+ buf->size = 0;
+ }
+ return err;
+}
extern void co_run_in_worker_bh(void *);
extern int v9fs_init_worker_threads(void);
+extern int v9fs_co_readlink(V9fsState *, V9fsString *, V9fsString *);
#endif