[Qemu-devel] [PATCH -V4 08/28] [virtio-9p] clean up v9fs_lcreate

["Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>]

From: Venkateswararao Jujjuri (JV) <jvrao@linux.vnet.ibm.com>

Rearrange the code so that we can avoid V9fsLcreateState
and additional malloc()s.

Signed-off-by: Venkateswararao Jujjuri "<jvrao@linux.vnet.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 hw/9pfs/virtio-9p.c |   63 ++++++++++++++++++++++++--------------------------
 hw/9pfs/virtio-9p.h |   11 ---------
 2 files changed, 30 insertions(+), 44 deletions(-)

diff --git a/hw/9pfs/virtio-9p.c b/hw/9pfs/virtio-9p.c
index 90636c3..3447b91 100644
--- a/hw/9pfs/virtio-9p.c
+++ b/hw/9pfs/virtio-9p.c
@@ -1609,63 +1609,60 @@ out:
 
 static void v9fs_lcreate(void *opaque)
 {
-    V9fsPDU *pdu = opaque;
-    V9fsState *s = pdu->s;
     int32_t dfid, flags, mode;
     gid_t gid;
-    V9fsLcreateState *vs;
     ssize_t err = 0;
+    ssize_t offset = 7;
+    V9fsString fullname;
+    V9fsString name;
+    V9fsFidState *fidp;
+    struct stat stbuf;
+    V9fsQID qid;
+    int32_t iounit;
+    V9fsPDU *pdu = opaque;
 
-    vs = qemu_malloc(sizeof(*vs));
-    vs->pdu = pdu;
-    vs->offset = 7;
-
-    v9fs_string_init(&vs->fullname);
+    v9fs_string_init(&fullname);
 
-    pdu_unmarshal(vs->pdu, vs->offset, "dsddd", &dfid, &vs->name, &flags,
-            &mode, &gid);
+    pdu_unmarshal(pdu, offset, "dsddd", &dfid, &name, &flags,
+                  &mode, &gid);
 
-    vs->fidp = lookup_fid(s, dfid);
-    if (vs->fidp == NULL) {
+    fidp = lookup_fid(pdu->s, dfid);
+    if (fidp == NULL) {
         err = -ENOENT;
         goto out;
     }
 
-    v9fs_string_sprintf(&vs->fullname, "%s/%s", vs->fidp->path.data,
-                        vs->name.data);
+    v9fs_string_sprintf(&fullname, "%s/%s", fidp->path.data, name.data);
 
     /* Ignore direct disk access hint until the server supports it. */
     flags &= ~O_DIRECT;
 
-    vs->fidp->fs.fd = v9fs_do_open2(s, vs->fullname.data, vs->fidp->uid,
-                                    gid, flags, mode);
-    if (vs->fidp->fs.fd == -1) {
+    fidp->fs.fd = v9fs_do_open2(pdu->s, fullname.data, fidp->uid,
+                                gid, flags, mode);
+    if (fidp->fs.fd == -1) {
         err = -errno;
         goto out;
     }
+    fidp->fid_type = P9_FID_FILE;
+    iounit =  get_iounit(pdu->s, &fullname);
 
-    vs->fidp->fid_type = P9_FID_FILE;
-    vs->iounit =  get_iounit(s, &vs->fullname);
-
-    err = v9fs_do_lstat(s, &vs->fullname, &vs->stbuf);
+    err = v9fs_do_lstat(pdu->s, &fullname, &stbuf);
     if (err == 0) {
-        v9fs_string_copy(&vs->fidp->path, &vs->fullname);
-        stat_to_qid(&vs->stbuf, &vs->qid);
-        vs->offset += pdu_marshal(vs->pdu, vs->offset, "Qd", &vs->qid,
-                vs->iounit);
-        err = vs->offset;
+        v9fs_string_copy(&fidp->path, &fullname);
+        stat_to_qid(&stbuf, &qid);
+        offset += pdu_marshal(pdu, offset, "Qd", &qid, iounit);
+        err = offset;
     } else {
-        vs->fidp->fid_type = P9_FID_NONE; /*TODO:Why are we keeping this fid?*/
+        fidp->fid_type = P9_FID_NONE; /*TODO:Why are we keeping this fid?*/
         err = -errno;
-        if (vs->fidp->fs.fd > 0) {
-            close(vs->fidp->fs.fd);
+        if (fidp->fs.fd > 0) {
+            close(fidp->fs.fd);
         }
     }
 out:
-    complete_pdu(s, vs->pdu, err);
-    v9fs_string_free(&vs->name);
-    v9fs_string_free(&vs->fullname);
-    qemu_free(vs);
+    complete_pdu(pdu->s, pdu, err);
+    v9fs_string_free(&name);
+    v9fs_string_free(&fullname);
 }
 
 static void v9fs_post_do_fsync(V9fsState *s, V9fsPDU *pdu, int err)
diff --git a/hw/9pfs/virtio-9p.h b/hw/9pfs/virtio-9p.h
index edf3413..97ceb72 100644
--- a/hw/9pfs/virtio-9p.h
+++ b/hw/9pfs/virtio-9p.h
@@ -236,17 +236,6 @@ typedef struct V9fsCreateState {
     int iounit;
 } V9fsCreateState;
 
-typedef struct V9fsLcreateState {
-    V9fsPDU *pdu;
-    size_t offset;
-    V9fsFidState *fidp;
-    V9fsQID qid;
-    int32_t iounit;
-    struct stat stbuf;
-    V9fsString name;
-    V9fsString fullname;
-} V9fsLcreateState;
-
 typedef struct V9fsStatState {
     V9fsPDU *pdu;
     size_t offset;
-- 
1.7.4.1