Patchwork [-V4,13/26] hw/9pfs: Add yield support to lstat coroutine

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Submitter Aneesh Kumar K.V
Date Aug. 8, 2011, 5:04 p.m.
Message ID <1312823054-28331-14-git-send-email-aneesh.kumar@linux.vnet.ibm.com>
Download mbox | patch
Permalink /patch/109019/
State New
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Comments

Aneesh Kumar K.V - Aug. 8, 2011, 5:04 p.m.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 Makefile.objs            |    2 +-
 hw/9pfs/cofile.c         |   32 ++++++++++++++++++++++++++++++++
 hw/9pfs/virtio-9p-coth.h |    1 +
 3 files changed, 34 insertions(+), 1 deletions(-)
 create mode 100644 hw/9pfs/cofile.c

Patch

diff --git a/Makefile.objs b/Makefile.objs
index faa2a12..efacf0f 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -305,7 +305,7 @@  hw-obj-$(CONFIG_SOUND) += $(sound-obj-y)
 9pfs-nested-$(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-$(CONFIG_VIRTFS) += virtio-9p-coth.o cofs.o codir.o
+9pfs-nested-$(CONFIG_VIRTFS) += virtio-9p-coth.o cofs.o codir.o cofile.o
 
 hw-obj-$(CONFIG_REALLY_VIRTFS) += $(addprefix 9pfs/, $(9pfs-nested-y))
 $(addprefix 9pfs/, $(9pfs-nested-y)): QEMU_CFLAGS+=$(GLIB_CFLAGS)
diff --git a/hw/9pfs/cofile.c b/hw/9pfs/cofile.c
new file mode 100644
index 0000000..a4c0ae7
--- /dev/null
+++ b/hw/9pfs/cofile.c
@@ -0,0 +1,32 @@ 
+
+/*
+ * 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_lstat(V9fsState *s, V9fsString *path, struct stat *stbuf)
+{
+    int err;
+
+    v9fs_co_run_in_worker(
+        {
+            err = s->ops->lstat(&s->ctx, path->data, stbuf);
+            if (err < 0) {
+                err = -errno;
+            }
+        });
+    return err;
+}
diff --git a/hw/9pfs/virtio-9p-coth.h b/hw/9pfs/virtio-9p-coth.h
index 5d9dc0f..3538d91 100644
--- a/hw/9pfs/virtio-9p-coth.h
+++ b/hw/9pfs/virtio-9p-coth.h
@@ -63,4 +63,5 @@  extern off_t v9fs_co_telldir(V9fsState *, V9fsFidState *);
 extern void v9fs_co_seekdir(V9fsState *, V9fsFidState *, off_t);
 extern void v9fs_co_rewinddir(V9fsState *, V9fsFidState *);
 extern int v9fs_co_statfs(V9fsState *, V9fsString *, struct statfs *);
+extern int v9fs_co_lstat(V9fsState *, V9fsString *, struct stat *);
 #endif