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[Qemu-devel] [PATCH 09/25] hw/9pfs: Add yield support for readdir relate
From: |
Venkateswararao Jujjuri (JV) |
Subject: |
[Qemu-devel] [PATCH 09/25] hw/9pfs: Add yield support for readdir related coroutines |
Date: |
Thu, 12 May 2011 13:57:31 -0700 |
From: Aneesh Kumar K.V <address@hidden>
This include readdir, telldir, seekdir, rewinddir.
Signed-off-by: Aneesh Kumar K.V <address@hidden>
Signed-off-by: Venkateswararao Jujjuri "<address@hidden>
---
Makefile.objs | 2 +-
hw/9pfs/codir.c | 135 ++++++++++++++++++++++++++++++++++++++++++++++
hw/9pfs/virtio-9p-coth.h | 5 ++
3 files changed, 141 insertions(+), 1 deletions(-)
create mode 100644 hw/9pfs/codir.c
diff --git a/Makefile.objs b/Makefile.objs
index 36005bb..614bcaf 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -297,7 +297,7 @@ 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-$(CONFIG_VIRTFS) += virtio-9p-coth.o cofs.o
+9pfs-nested-$(CONFIG_VIRTFS) += virtio-9p-coth.o cofs.o codir.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/codir.c b/hw/9pfs/codir.c
new file mode 100644
index 0000000..adca50c
--- /dev/null
+++ b/hw/9pfs/codir.c
@@ -0,0 +1,135 @@
+
+/*
+ * Virtio 9p backend
+ *
+ * Copyright IBM, Corp. 2011
+ *
+ * Authors:
+ * Aneesh Kumar K.V <address@hidden>
+ *
+ * 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"
+
+typedef struct V9fsThReaddirState {
+ int err;
+ V9fsState *s;
+ V9fsFidState *fidp;
+ struct dirent *dent;
+ V9fsRequest request;
+} V9fsThReaddirState;
+
+static void v9fs_th_do_readdir(V9fsRequest *request)
+{
+ V9fsThReaddirState *vsp = container_of(request, V9fsThReaddirState,
+ request);
+ errno = 0;
+ vsp->dent = vsp->s->ops->readdir(&vsp->s->ctx, vsp->fidp->fs.dir);
+ if (!vsp->dent && errno) {
+ vsp->err = -errno;
+ } else {
+ vsp->err = 0;
+ }
+}
+
+int v9fs_co_readdir(V9fsState *s, V9fsFidState *fidp, struct dirent **dent)
+{
+ V9fsThReaddirState vs;
+ vs.s = s;
+ vs.fidp = fidp;
+ vs.request.func = v9fs_th_do_readdir;
+ vs.request.coroutine = qemu_coroutine_self();
+ v9fs_qemu_submit_request(&vs.request);
+ qemu_coroutine_yield();
+ *dent = vs.dent;
+ return vs.err;
+}
+
+typedef struct V9fsThTelldirState {
+ off_t err;
+ V9fsState *s;
+ V9fsFidState *fidp;
+ V9fsRequest request;
+} V9fsThTelldirState;
+
+
+static void v9fs_th_do_telldir(V9fsRequest *request)
+{
+ V9fsThTelldirState *vsp = container_of(request, V9fsThTelldirState,
+ request);
+ errno = 0;
+ vsp->err = vsp->s->ops->telldir(&vsp->s->ctx, vsp->fidp->fs.dir);
+ if (vsp->err < 0) {
+ vsp->err = -errno;
+ }
+}
+
+off_t v9fs_co_telldir(V9fsState *s, V9fsFidState *fidp)
+{
+ V9fsThTelldirState vs;
+ vs.s = s;
+ vs.fidp = fidp;
+ vs.request.func = v9fs_th_do_telldir;
+ vs.request.coroutine = qemu_coroutine_self();
+ v9fs_qemu_submit_request(&vs.request);
+ qemu_coroutine_yield();
+ return vs.err;
+}
+
+typedef struct V9fsThSeekdirState {
+ off_t offset;
+ V9fsState *s;
+ V9fsFidState *fidp;
+ V9fsRequest request;
+} V9fsThSeekdirState;
+
+static void v9fs_th_do_seekdir(V9fsRequest *request)
+{
+ V9fsThSeekdirState *vsp = container_of(request, V9fsThSeekdirState,
+ request);
+ vsp->s->ops->seekdir(&vsp->s->ctx, vsp->fidp->fs.dir, vsp->offset);
+}
+
+void v9fs_co_seekdir(V9fsState *s, V9fsFidState *fidp, off_t offset)
+{
+ V9fsThSeekdirState vs;
+ vs.s = s;
+ vs.fidp = fidp;
+ vs.offset = offset;
+ vs.request.func = v9fs_th_do_seekdir;
+ vs.request.coroutine = qemu_coroutine_self();
+ v9fs_qemu_submit_request(&vs.request);
+ qemu_coroutine_yield();
+ return;
+}
+
+typedef struct V9fsThRewindirState {
+ V9fsState *s;
+ V9fsFidState *fidp;
+ V9fsRequest request;
+} V9fsThRewinddirState;
+
+static void v9fs_th_do_rewinddir(V9fsRequest *request)
+{
+ V9fsThRewinddirState *vsp = container_of(request, V9fsThRewinddirState,
+ request);
+ vsp->s->ops->rewinddir(&vsp->s->ctx, vsp->fidp->fs.dir);
+}
+
+void v9fs_co_rewinddir(V9fsState *s, V9fsFidState *fidp)
+{
+ V9fsThSeekdirState vs;
+ vs.s = s;
+ vs.fidp = fidp;
+ vs.request.func = v9fs_th_do_rewinddir;
+ vs.request.coroutine = qemu_coroutine_self();
+ v9fs_qemu_submit_request(&vs.request);
+ qemu_coroutine_yield();
+ return;
+}
diff --git a/hw/9pfs/virtio-9p-coth.h b/hw/9pfs/virtio-9p-coth.h
index d0b856e..4d34098 100644
--- a/hw/9pfs/virtio-9p-coth.h
+++ b/hw/9pfs/virtio-9p-coth.h
@@ -50,4 +50,9 @@ extern void v9fs_qemu_submit_request(V9fsRequest *req);
extern int v9fs_co_readlink(V9fsState *, V9fsString *,
V9fsString *, ssize_t *);
+extern int v9fs_co_readdir(V9fsState *, V9fsFidState *,
+ struct dirent **);
+extern off_t v9fs_co_telldir(V9fsState *, V9fsFidState *);
+extern void v9fs_co_seekdir(V9fsState *, V9fsFidState *, off_t);
+extern void v9fs_co_rewinddir(V9fsState *, V9fsFidState *);
#endif
--
1.7.1
- [Qemu-devel] [PATCH 14/25] hw/9pfs: Update v9fs_getattr to use coroutines, (continued)
- [Qemu-devel] [PATCH 13/25] hw/9pfs: Add yield support to lstat coroutine, Venkateswararao Jujjuri (JV), 2011/05/12
- [Qemu-devel] [PATCH 16/25] hw/9pfs: Update v9fs_setattr to use coroutines, Venkateswararao Jujjuri (JV), 2011/05/12
- [Qemu-devel] [PATCH 10/25] hw/9pfs: Update v9fs_readdir to use coroutines, Venkateswararao Jujjuri (JV), 2011/05/12
- [Qemu-devel] [PATCH 18/25] hw/9pfs: Update v9fs_xattrwalk to coroutines, Venkateswararao Jujjuri (JV), 2011/05/12
- [Qemu-devel] [PATCH 09/25] hw/9pfs: Add yield support for readdir related coroutines,
Venkateswararao Jujjuri (JV) <=
- [Qemu-devel] [PATCH 19/25] hw/9pfs: Update v9fs_xattrcreate to use coroutines, Venkateswararao Jujjuri (JV), 2011/05/12
- [Qemu-devel] [PATCH 17/25] hw/9pfs: Add yield support to xattr related coroutine, Venkateswararao Jujjuri (JV), 2011/05/12
- [Qemu-devel] [PATCH 22/25] [virtio-9p] coroutine and threading for mkdir, Venkateswararao Jujjuri (JV), 2011/05/12
- [Qemu-devel] [PATCH 20/25] hw/9pfs: Add yield support to mknod coroutine, Venkateswararao Jujjuri (JV), 2011/05/12
- [Qemu-devel] [PATCH 15/25] hw/9pfs: Add yield support to setattr related coroutines, Venkateswararao Jujjuri (JV), 2011/05/12
- [Qemu-devel] [PATCH 25/25] [virtio-9p] coroutine and threading for remove/unlink, Venkateswararao Jujjuri (JV), 2011/05/12
- [Qemu-devel] [PATCH 23/25] [virtio-9p] Remove post functions for v9fs_remove, Venkateswararao Jujjuri (JV), 2011/05/12
- [Qemu-devel] [PATCH 11/25] hw/9pfs: Add yield support to statfs coroutine, Venkateswararao Jujjuri (JV), 2011/05/12
- [Qemu-devel] [PATCH 21/25] hw/9pfs: Update v9fs_mknod to use coroutines, Venkateswararao Jujjuri (JV), 2011/05/12
- [Qemu-devel] [PATCH 24/25] [virtio-9p] clean up v9fs_remove., Venkateswararao Jujjuri (JV), 2011/05/12