Patchwork [20/25] hw/9pfs: Add yield support to mknod coroutine

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Submitter jvrao
Date May 12, 2011, 8:57 p.m.
Message ID <1305233867-4367-21-git-send-email-jvrao@linux.vnet.ibm.com>
Download mbox | patch
Permalink /patch/95372/
State New
Headers show

Comments

jvrao - May 12, 2011, 8:57 p.m.
From: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Venkateswararao Jujjuri "<jvrao@linux.vnet.ibm.com>
---
 hw/9pfs/cofs.c           |   45 +++++++++++++++++++++++++++++++++++++++++++++
 hw/9pfs/virtio-9p-coth.h |    2 ++
 2 files changed, 47 insertions(+), 0 deletions(-)

Patch

diff --git a/hw/9pfs/cofs.c b/hw/9pfs/cofs.c
index 02eb0ba..06127f7 100644
--- a/hw/9pfs/cofs.c
+++ b/hw/9pfs/cofs.c
@@ -224,3 +224,48 @@  int v9fs_co_truncate(V9fsState *s, V9fsString *path, off_t size)
     qemu_coroutine_yield();
     return vs.err;
 }
+
+typedef struct V9fsThMknodState {
+    int err;
+    uid_t uid;
+    gid_t gid;
+    mode_t mode;
+    dev_t dev;
+    V9fsState *s;
+    V9fsString *path;
+    struct stat *stbuf;
+    V9fsRequest request;
+} V9fsThMknodState;
+
+static void v9fs_th_do_mknod(V9fsRequest *request)
+{
+    FsCred cred;
+    V9fsThMknodState *vsp = container_of(request, V9fsThMknodState,
+                                         request);
+    cred_init(&cred);
+    cred.fc_uid  = vsp->uid;
+    cred.fc_gid  = vsp->gid;
+    cred.fc_mode = vsp->mode;
+    cred.fc_rdev = vsp->dev;
+    vsp->err = vsp->s->ops->mknod(&vsp->s->ctx, vsp->path->data, &cred);
+    if (vsp->err < 0) {
+        vsp->err = -errno;
+    }
+}
+
+int v9fs_co_mknod(V9fsState *s, V9fsString *path, uid_t uid,
+                  gid_t gid, dev_t dev, mode_t mode)
+{
+    V9fsThMknodState vs;
+    vs.s = s;
+    vs.path = path;
+    vs.uid  = uid;
+    vs.gid  = gid;
+    vs.dev  = dev;
+    vs.mode = mode;
+    vs.request.func = v9fs_th_do_mknod;
+    vs.request.coroutine = qemu_coroutine_self();
+    v9fs_qemu_submit_request(&vs.request);
+    qemu_coroutine_yield();
+    return vs.err;
+}
diff --git a/hw/9pfs/virtio-9p-coth.h b/hw/9pfs/virtio-9p-coth.h
index c8d37dd..bd410cb 100644
--- a/hw/9pfs/virtio-9p-coth.h
+++ b/hw/9pfs/virtio-9p-coth.h
@@ -64,4 +64,6 @@  extern int v9fs_co_truncate(V9fsState *, V9fsString *, off_t);
 extern int v9fs_co_llistxattr(V9fsState *, V9fsString *, void *, size_t);
 extern int v9fs_co_lgetxattr(V9fsState *, V9fsString *,
                              V9fsString *, void *, size_t);
+extern int v9fs_co_mknod(V9fsState *, V9fsString *, uid_t,
+                         gid_t, dev_t, mode_t);
 #endif