From patchwork Mon May 21 20:19:55 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Corey Bryant X-Patchwork-Id: 160465 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id DB441B6F6E for ; Tue, 22 May 2012 06:20:46 +1000 (EST) Received: from localhost ([::1]:52783 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SWZ5w-0006tO-6w for incoming@patchwork.ozlabs.org; Mon, 21 May 2012 16:20:44 -0400 Received: from eggs.gnu.org ([208.118.235.92]:56980) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SWZ5o-0006sZ-0U for qemu-devel@nongnu.org; Mon, 21 May 2012 16:20:37 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SWZ5m-0004JY-7D for qemu-devel@nongnu.org; Mon, 21 May 2012 16:20:35 -0400 Received: from e34.co.us.ibm.com ([32.97.110.152]:53191) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SWZ5m-0004ED-0B for qemu-devel@nongnu.org; Mon, 21 May 2012 16:20:34 -0400 Received: from /spool/local by e34.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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X-Received-From: 32.97.110.152 Cc: kwolf@redhat.com, aliguori@us.ibm.com, stefanha@linux.vnet.ibm.com, libvir-list@redhat.com, eblake@redhat.com Subject: [Qemu-devel] [RFC PATCH 1/4] qemu-options: Add -filefd command line option 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 This patch provides support for the -filefd command line option. This option will allow passing of a filename and its corresponding file descriptor to QEMU at exec time. Signed-off-by: Corey Bryant --- qemu-config.c | 17 +++++++++++++++++ qemu-config.h | 1 + qemu-options.hx | 17 +++++++++++++++++ 3 files changed, 35 insertions(+), 0 deletions(-) diff --git a/qemu-config.c b/qemu-config.c index be84a03..64afac6 100644 --- a/qemu-config.c +++ b/qemu-config.c @@ -613,6 +613,22 @@ QemuOptsList qemu_boot_opts = { }, }; +QemuOptsList qemu_filefd_opts = { + .name = "filefd", + .head = QTAILQ_HEAD_INITIALIZER(qemu_filefd_opts.head), + .desc = { + { + .name = "file", + .type = QEMU_OPT_STRING, + }, { + .name = "fd", + .type = QEMU_OPT_NUMBER, + }, + { /*End of list */ } + }, +}; + + static QemuOptsList *vm_config_groups[32] = { &qemu_drive_opts, &qemu_chardev_opts, @@ -628,6 +644,7 @@ static QemuOptsList *vm_config_groups[32] = { &qemu_machine_opts, &qemu_boot_opts, &qemu_iscsi_opts, + &qemu_filefd_opts, NULL, }; diff --git a/qemu-config.h b/qemu-config.h index 6d7365d..6be54f1 100644 --- a/qemu-config.h +++ b/qemu-config.h @@ -4,6 +4,7 @@ extern QemuOptsList qemu_fsdev_opts; extern QemuOptsList qemu_virtfs_opts; extern QemuOptsList qemu_spice_opts; +extern QemuOptsList qemu_filefd_opts; QemuOptsList *qemu_find_opts(const char *group); void qemu_add_opts(QemuOptsList *list); diff --git a/qemu-options.hx b/qemu-options.hx index 8b66264..5f6782c 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2743,6 +2743,23 @@ DEF("qtest-log", HAS_ARG, QEMU_OPTION_qtest_log, "-qtest-log LOG specify tracing options\n", QEMU_ARCH_ALL) +DEF("filefd", HAS_ARG, QEMU_OPTION_filefd, + "-filefd file=,fd=\n" + " passes a filename and its corresponding file descriptor\n", + QEMU_ARCH_ALL) +STEXI +@item -filefd file=@var{filename},fd=@var{fd} +@findex -filefd +This is used when a management application opens a file on behalf of QEMU. +Instead of performing an open, QEMU will use the fd passed on this option. +@table @option +@item file=@var{filename} +The name of the file. +@item fd=@var{fd} +The file descriptor that corresponds to @var{filename}. +@end table +ETEXI + HXCOMM This is the last statement. Insert new options before this line! STEXI @end table