From patchwork Thu May 12 20:57:35 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: jvrao X-Patchwork-Id: 95374 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [140.186.70.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 21F95B6F00 for ; Fri, 13 May 2011 07:03:32 +1000 (EST) Received: from localhost ([::1]:34773 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QKd2f-0000lO-7L for incoming@patchwork.ozlabs.org; Thu, 12 May 2011 17:03:29 -0400 Received: from eggs.gnu.org ([140.186.70.92]:50522) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QKcxl-00016M-3x for qemu-devel@nongnu.org; Thu, 12 May 2011 16:58:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QKcxi-0001pa-Pm for qemu-devel@nongnu.org; Thu, 12 May 2011 16:58:25 -0400 Received: from e37.co.us.ibm.com ([32.97.110.158]:56426) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QKcxi-0001pW-KE for qemu-devel@nongnu.org; Thu, 12 May 2011 16:58:22 -0400 Received: from d03relay02.boulder.ibm.com (d03relay02.boulder.ibm.com [9.17.195.227]) by e37.co.us.ibm.com (8.14.4/8.13.1) with ESMTP id p4CKtPsu006118 for ; Thu, 12 May 2011 14:55:26 -0600 Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by d03relay02.boulder.ibm.com (8.13.8/8.13.8/NCO v9.1) with ESMTP id p4CKwF8i105288 for ; Thu, 12 May 2011 14:58:15 -0600 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id p4CEvlrH000525 for ; Thu, 12 May 2011 08:57:48 -0600 Received: from oc6675851006.ibm.com (dyn9047029068.beaverton.ibm.com [9.47.29.68]) by d03av02.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id p4CEvUhT031551; Thu, 12 May 2011 08:57:46 -0600 From: "Venkateswararao Jujjuri (JV)" To: qemu-devel@nongnu.org Date: Thu, 12 May 2011 13:57:35 -0700 Message-Id: <1305233867-4367-14-git-send-email-jvrao@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1305233867-4367-1-git-send-email-jvrao@linux.vnet.ibm.com> References: <1305233867-4367-1-git-send-email-jvrao@linux.vnet.ibm.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6, seldom 2.4 (older, 4) X-Received-From: 32.97.110.158 Cc: aliguori@us.ibm.com, "Venkateswararao Jujjuri \"" , stefanha@linux.vnet.ibm.com, "Aneesh Kumar K.V" Subject: [Qemu-devel] [PATCH 13/25] hw/9pfs: Add yield support to lstat coroutine X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Aneesh Kumar K.V Signed-off-by: Aneesh Kumar K.V Signed-off-by: Venkateswararao Jujjuri " --- Makefile.objs | 2 +- hw/9pfs/cofile.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++ hw/9pfs/virtio-9p-coth.h | 1 + 3 files changed, 52 insertions(+), 1 deletions(-) create mode 100644 hw/9pfs/cofile.c diff --git a/Makefile.objs b/Makefile.objs index 614bcaf..83d30bd 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-$(CONFIG_VIRTFS) += virtio-9p-coth.o cofs.o codir.o +9pfs-nested-$(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..860b060 --- /dev/null +++ b/hw/9pfs/cofile.c @@ -0,0 +1,50 @@ + +/* + * Virtio 9p backend + * + * Copyright IBM, Corp. 2011 + * + * Authors: + * Aneesh Kumar K.V + * + * 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 V9fsThLstatState { + int err; + V9fsState *s; + V9fsString *path; + struct stat *stbuf; + V9fsRequest request; +} V9fsThLstatState; + +static void v9fs_th_do_lstat(V9fsRequest *request) +{ + V9fsThLstatState *vsp = container_of(request, V9fsThLstatState, + request); + vsp->err = vsp->s->ops->lstat(&vsp->s->ctx, vsp->path->data, vsp->stbuf); + if (vsp->err < 0) { + vsp->err = -errno; + } +} + +int v9fs_co_lstat(V9fsState *s, V9fsString *path, struct stat *stbuf) +{ + V9fsThLstatState vs; + vs.s = s; + vs.path = path; + vs.stbuf = stbuf; + vs.request.func = v9fs_th_do_lstat; + 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 57f30ff..aedeba9 100644 --- a/hw/9pfs/virtio-9p-coth.h +++ b/hw/9pfs/virtio-9p-coth.h @@ -56,4 +56,5 @@ 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