* Arun R Bharadwaj <[email protected]> [2011-03-15 16:04:53]:
Author: Harsh Prateek Bora <[email protected]>
Date: Mon Mar 14 13:55:37 2011 +0530
Convert v9fs_stat to threaded model.
This patch converts v9fs_stat syscall of 9pfs to threaded
model by making use of the helper routines provided
created by the previous patch.
Signed-off-by: Harsh Prateek Bora <[email protected]>
Signed-off-by: Arun R Bharadwaj <[email protected]>
diff --git a/hw/9pfs/virtio-9p.c b/hw/9pfs/virtio-9p.c
index cf61345..a328e97 100644
--- a/hw/9pfs/virtio-9p.c
+++ b/hw/9pfs/virtio-9p.c
@@ -1458,26 +1458,35 @@ out:
v9fs_string_free(&aname);
}
-static void v9fs_stat_post_lstat(V9fsState *s, V9fsStatState *vs, int err)
+static void v9fs_stat_post_lstat(void *opaque)
{
- if (err == -1) {
- err = -errno;
+ V9fsStatState *vs = (V9fsStatState *)opaque;
+ if (vs->err == -1) {
+ vs->err = -(vs->v9fs_errno);
goto out;
}
- err = stat_to_v9stat(s, &vs->fidp->fsmap.path, &vs->stbuf, &vs->v9stat);
- if (err) {
+ vs->err = stat_to_v9stat(vs->s, &vs->fidp->fsmap.path, &vs->stbuf,
&vs->v9stat);
+ if (vs->err) {
goto out;
}
vs->offset += pdu_marshal(vs->pdu, vs->offset, "wS", 0, &vs->v9stat);
- err = vs->offset;
+ vs->err = vs->offset;
out:
- complete_pdu(s, vs->pdu, err);
+ complete_pdu(vs->s, vs->pdu, vs->err);
v9fs_stat_free(&vs->v9stat);
qemu_free(vs);
}
+static void v9fs_stat_do_lstat(V9fsRequest *request)
+{
+ V9fsStatState *vs = container_of(request, V9fsStatState, request);
+
+ vs->err = v9fs_do_lstat(vs->s, &vs->fidp->fsmap.path, &vs->stbuf);
+ vs->v9fs_errno = errno;
+}
+
static void v9fs_stat(V9fsState *s, V9fsPDU *pdu)
{
int32_t fid;
@@ -1487,6 +1496,10 @@ static void v9fs_stat(V9fsState *s, V9fsPDU *pdu)
vs = qemu_malloc(sizeof(*vs));
vs->pdu = pdu;
vs->offset = 7;
+ vs->s = s;
+ vs->request.func = v9fs_stat_do_lstat;
+ vs->request.post_op.func = v9fs_stat_post_lstat;
+ vs->request.post_op.arg = vs;
memset(&vs->v9stat, 0, sizeof(vs->v9stat));
@@ -1498,8 +1511,11 @@ static void v9fs_stat(V9fsState *s, V9fsPDU *pdu)
goto out;
}
+ /*
err = v9fs_do_lstat(s, &vs->fidp->fsmap.path, &vs->stbuf);
v9fs_stat_post_lstat(s, vs, err);
+ */
+ v9fs_qemu_submit_request(&vs->request);
return;
out:
diff --git a/hw/9pfs/virtio-9p.h b/hw/9pfs/virtio-9p.h
index e7d2326..1d6c17c 100644
--- a/hw/9pfs/virtio-9p.h
+++ b/hw/9pfs/virtio-9p.h
@@ -271,6 +271,10 @@ typedef struct V9fsStatState {
V9fsStat v9stat;
V9fsFidState *fidp;
struct stat stbuf;
+ V9fsState *s;
+ int err;
+ int v9fs_errno;
+ V9fsRequest request;
} V9fsStatState;
typedef struct V9fsStatDotl {
