From patchwork Thu Jul 1 19:21:43 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luiz Capitulino X-Patchwork-Id: 57584 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 05F10B70C9 for ; Fri, 2 Jul 2010 05:41:05 +1000 (EST) Received: from localhost ([127.0.0.1]:45925 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OUPd7-0002h6-Uk for incoming@patchwork.ozlabs.org; Thu, 01 Jul 2010 15:41:02 -0400 Received: from [140.186.70.92] (port=37748 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OUPLO-0006dz-7J for qemu-devel@nongnu.org; Thu, 01 Jul 2010 15:22:57 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OUPLF-0007Ne-AF for qemu-devel@nongnu.org; Thu, 01 Jul 2010 15:22:41 -0400 Received: from mx1.redhat.com ([209.132.183.28]:23161) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OUPLE-0007NP-Ve for qemu-devel@nongnu.org; Thu, 01 Jul 2010 15:22:33 -0400 Received: from int-mx04.intmail.prod.int.phx2.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.17]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o61JMWTq008299 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Thu, 1 Jul 2010 15:22:32 -0400 Received: from localhost (vpn-10-238.rdu.redhat.com [10.11.10.238]) by int-mx04.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o61JMUJL020306; Thu, 1 Jul 2010 15:22:31 -0400 From: Luiz Capitulino To: aliguori@us.ibm.com Date: Thu, 1 Jul 2010 16:21:43 -0300 Message-Id: <1278012111-26227-16-git-send-email-lcapitulino@redhat.com> In-Reply-To: <1278012111-26227-1-git-send-email-lcapitulino@redhat.com> References: <1278012111-26227-1-git-send-email-lcapitulino@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.17 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. Cc: qemu-devel@nongnu.org Subject: [Qemu-devel] [PATCH 15/23] Monitor: handle optional '-' arg as a bool X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Historically, user monitor arguments beginning with '-' (eg. '-f') were passed as integers down to handlers. I've maintained this behavior in the new monitor because we didn't have a boolean type at the very beginning of QMP. Today we have it and this behavior is causing trouble to QMP's argument checker. This commit fixes the problem by doing the following changes: 1. User Monitor Before: the optional arg was represented as a QInt, we'd pass 1 down to handlers if the user specified the argument or 0 otherwise This commit: the optional arg is represented as a QBool, we pass true down to handlers if the user specified the argument, otherwise _nothing_ is passed 2. QMP Before: the client was required to pass the arg as QBool, but we'd convert it to QInt internally. If the argument wasn't passed, we'd pass 0 down This commit: still require a QBool, but doesn't do any conversion and doesn't pass any default value 3. Convert existing handlers (do_eject()/do_migrate()) to the new way Before: Both handlers would expect a QInt value, either 0 or 1 This commit: Change the handlers to accept a QBool, they handle the following cases: A) true is passed: the option is enabled B) false is passed: the option is disabled C) nothing is passed: option not specified, use default behavior Signed-off-by: Luiz Capitulino --- blockdev.c | 2 +- migration.c | 16 +++++++--------- monitor.c | 17 +++-------------- 3 files changed, 11 insertions(+), 24 deletions(-) diff --git a/blockdev.c b/blockdev.c index 3b8c606..4dcfad8 100644 --- a/blockdev.c +++ b/blockdev.c @@ -521,7 +521,7 @@ static int eject_device(Monitor *mon, BlockDriverState *bs, int force) int do_eject(Monitor *mon, const QDict *qdict, QObject **ret_data) { BlockDriverState *bs; - int force = qdict_get_int(qdict, "force"); + int force = qdict_get_try_bool(qdict, "force", 0); const char *filename = qdict_get_str(qdict, "device"); bs = bdrv_find(filename); diff --git a/migration.c b/migration.c index b49964c..650eb78 100644 --- a/migration.c +++ b/migration.c @@ -75,7 +75,9 @@ int do_migrate(Monitor *mon, const QDict *qdict, QObject **ret_data) { MigrationState *s = NULL; const char *p; - int detach = qdict_get_int(qdict, "detach"); + int detach = qdict_get_try_bool(qdict, "detach", 0); + int blk = qdict_get_try_bool(qdict, "blk", 0); + int inc = qdict_get_try_bool(qdict, "inc", 0); const char *uri = qdict_get_str(qdict, "uri"); if (current_migration && @@ -86,21 +88,17 @@ int do_migrate(Monitor *mon, const QDict *qdict, QObject **ret_data) if (strstart(uri, "tcp:", &p)) { s = tcp_start_outgoing_migration(mon, p, max_throttle, detach, - (int)qdict_get_int(qdict, "blk"), - (int)qdict_get_int(qdict, "inc")); + blk, inc); #if !defined(WIN32) } else if (strstart(uri, "exec:", &p)) { s = exec_start_outgoing_migration(mon, p, max_throttle, detach, - (int)qdict_get_int(qdict, "blk"), - (int)qdict_get_int(qdict, "inc")); + blk, inc); } else if (strstart(uri, "unix:", &p)) { s = unix_start_outgoing_migration(mon, p, max_throttle, detach, - (int)qdict_get_int(qdict, "blk"), - (int)qdict_get_int(qdict, "inc")); + blk, inc); } else if (strstart(uri, "fd:", &p)) { s = fd_start_outgoing_migration(mon, p, max_throttle, detach, - (int)qdict_get_int(qdict, "blk"), - (int)qdict_get_int(qdict, "inc")); + blk, inc); #endif } else { monitor_printf(mon, "unknown migration protocol: %s\n", uri); diff --git a/monitor.c b/monitor.c index 58b060b..568bfb2 100644 --- a/monitor.c +++ b/monitor.c @@ -3565,7 +3565,7 @@ static const mon_cmd_t *monitor_parse_command(Monitor *mon, case '-': { const char *tmp = p; - int has_option, skip_key = 0; + int skip_key = 0; /* option */ c = *typestr++; @@ -3573,7 +3573,6 @@ static const mon_cmd_t *monitor_parse_command(Monitor *mon, goto bad_type; while (qemu_isspace(*p)) p++; - has_option = 0; if (*p == '-') { p++; if(c != *p) { @@ -3589,11 +3588,11 @@ static const mon_cmd_t *monitor_parse_command(Monitor *mon, if(skip_key) { p = tmp; } else { + /* has option */ p++; - has_option = 1; + qdict_put(qdict, key, qbool_from_int(1)); } } - qdict_put(qdict, key, qint_from_int(has_option)); } break; default: @@ -3985,11 +3984,6 @@ static int check_opt(const CmdArgs *cmd_args, const char *name, QDict *args) return -1; } - if (cmd_args->type == '-') { - /* handlers expect a value, they need to be changed */ - qdict_put(args, name, qint_from_int(0)); - } - return 0; } @@ -4062,11 +4056,6 @@ static int check_arg(const CmdArgs *cmd_args, QDict *args) qerror_report(QERR_INVALID_PARAMETER_TYPE, name, "bool"); return -1; } - if (qobject_type(value) == QTYPE_QBOOL) { - /* handlers expect a QInt, they need to be changed */ - qdict_put(args, name, - qint_from_int(qbool_get_int(qobject_to_qbool(value)))); - } break; case 'O': default: