From patchwork Wed May 8 08:45:33 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Wang X-Patchwork-Id: 242519 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 77CB12C0119 for ; Wed, 8 May 2013 18:47:28 +1000 (EST) Received: from localhost ([::1]:39441 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ua020-0001xh-P0 for incoming@patchwork.ozlabs.org; Wed, 08 May 2013 04:47:24 -0400 Received: from eggs.gnu.org ([208.118.235.92]:41754) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ua01V-0001t5-60 for qemu-devel@nongnu.org; Wed, 08 May 2013 04:46:55 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Ua01T-0004Av-1W for qemu-devel@nongnu.org; Wed, 08 May 2013 04:46:53 -0400 Received: from mail-pb0-x230.google.com ([2607:f8b0:400e:c01::230]:57642) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ua01S-0004Ai-JC for qemu-devel@nongnu.org; Wed, 08 May 2013 04:46:50 -0400 Received: by mail-pb0-f48.google.com with SMTP id ma3so1058949pbc.35 for ; Wed, 08 May 2013 01:46:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:sender:from:to:cc:subject:date:message-id:x-mailer :in-reply-to:references; bh=xTKNnD8zshwyVRbcQs0IQQ0bss+c83r4R+MP+NOjCVU=; b=vC1fn8PdVELIEwKPiNfZ6YodVgtq6TLL7xht2ei8rUnO0AbQhJLUNNDWkbdT1ZRPio suFv1VJB3QhH4L0B5M2zBEHZfgucNjJh6r38gYxwiALiv47CXaDRN6YvcrFGrRRQ3BcU Pq2hQWoJO0wQ5B2+GSJa+oQYFjBgNzVL5H1bbNqyJ5+uFxyh4oF/bUMMDpRhudBDNXmX zKNh+3RXgY5GuFvcNwDd9wmwoOZLffICtXJqJJ/ob1HIfAL3moNX5nPlbpbQJlQCxJCp zuYH2EmlBh66p6X35k6MLOD3UhqbG+6wBk+tH8xsGZ7tJHtTp9iYIXyqKbNy1ikL7WZw V0Qg== X-Received: by 10.66.188.204 with SMTP id gc12mr7160370pac.85.1368002809784; Wed, 08 May 2013 01:46:49 -0700 (PDT) Received: from localhost.localdomain ([202.108.130.138]) by mx.google.com with ESMTPSA id wi6sm31760893pbc.22.2013.05.08.01.46.33 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 08 May 2013 01:46:41 -0700 (PDT) From: Dong Xu Wang To: qemu-devel@nongnu.org Date: Wed, 8 May 2013 16:45:33 +0800 Message-Id: <1368002735-3646-5-git-send-email-wdongxu@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1368002735-3646-1-git-send-email-wdongxu@linux.vnet.ibm.com> References: <1368002735-3646-1-git-send-email-wdongxu@linux.vnet.ibm.com> X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2607:f8b0:400e:c01::230 Cc: Dong Xu Wang , kwol@redhat.com, wdongxu@cn.ibm.com, armbru@redhat.com, stefanha@redhat.com Subject: [Qemu-devel] [PATCH V14 4/6] Create some QemuOpts functons 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 These functions will be used in next commit. qemu_opt_get_(*)_del functions are used to make sure we have the same behaviors as before: in block layer, after parsing a parameter value, parameter list will delete it to avoid parsing it twice. Signed-off-by: Dong Xu Wang --- v13->v14: 1) rewrite commit message. 2) use def_value_str in qemu_opt_get_FOO_del() and qemu_opt_get_del(). 3) delete redundant qemu_opt_del(opt). include/qemu/option.h | 11 ++++- util/qemu-option.c | 116 +++++++++++++++++++++++++++++++++++++++++++++++--- 2 files changed, 119 insertions(+), 8 deletions(-) diff --git a/include/qemu/option.h b/include/qemu/option.h index c7a5c14..d63e447 100644 --- a/include/qemu/option.h +++ b/include/qemu/option.h @@ -108,6 +108,7 @@ struct QemuOptsList { }; const char *qemu_opt_get(QemuOpts *opts, const char *name); +const char *qemu_opt_get_del(QemuOpts *opts, const char *name); /** * qemu_opt_has_help_opt: * @opts: options to search for a help request @@ -121,13 +122,18 @@ const char *qemu_opt_get(QemuOpts *opts, const char *name); */ bool qemu_opt_has_help_opt(QemuOpts *opts); bool qemu_opt_get_bool(QemuOpts *opts, const char *name, bool defval); +bool qemu_opt_get_bool_del(QemuOpts *opts, const char *name, bool defval); uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval); uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval); +uint64_t qemu_opt_get_size_del(QemuOpts *opts, const char *name, + uint64_t defval); int qemu_opt_set(QemuOpts *opts, const char *name, const char *value); +int qemu_opt_replace_set(QemuOpts *opts, const char *name, const char *value); void qemu_opt_set_err(QemuOpts *opts, const char *name, const char *value, Error **errp); int qemu_opt_set_bool(QemuOpts *opts, const char *name, bool val); int qemu_opt_set_number(QemuOpts *opts, const char *name, int64_t val); +int qemu_opt_replace_set_number(QemuOpts *opts, const char *name, int64_t val); typedef int (*qemu_opt_loopfunc)(const char *name, const char *value, void *opaque); int qemu_opt_foreach(QemuOpts *opts, qemu_opt_loopfunc func, void *opaque, int abort_on_failure); @@ -144,7 +150,10 @@ const char *qemu_opts_id(QemuOpts *opts); void qemu_opts_del(QemuOpts *opts); void qemu_opts_validate(QemuOpts *opts, const QemuOptDesc *desc, Error **errp); int qemu_opts_do_parse(QemuOpts *opts, const char *params, const char *firstname); -QemuOpts *qemu_opts_parse(QemuOptsList *list, const char *params, int permit_abbrev); +int qemu_opts_do_parse_replace(QemuOpts *opts, const char *params, + const char *firstname); +QemuOpts *qemu_opts_parse(QemuOptsList *list, const char *params, + int permit_abbrev); void qemu_opts_set_defaults(QemuOptsList *list, const char *params, int permit_abbrev); QemuOpts *qemu_opts_from_qdict(QemuOptsList *list, const QDict *qdict, diff --git a/util/qemu-option.c b/util/qemu-option.c index e3f482f..3251adc 100644 --- a/util/qemu-option.c +++ b/util/qemu-option.c @@ -33,6 +33,8 @@ #include "qapi/qmp/qerror.h" #include "qemu/option_int.h" +static void qemu_opt_del(QemuOpt *opt); + /* * Extracts the name of an option from the parameter string (p points at the * first byte of the option name) @@ -553,6 +555,24 @@ const char *qemu_opt_get(QemuOpts *opts, const char *name) return opt ? opt->str : NULL; } +const char *qemu_opt_get_del(QemuOpts *opts, const char *name) +{ + QemuOpt *opt = qemu_opt_find(opts, name); + const QemuOptDesc *desc; + const char *str = NULL; + + if (!opt) { + desc = find_desc_by_name(opts->list->desc, name); + if (desc && desc->def_value_str) { + str = g_strdup(desc->def_value_str); + } + } else { + str = g_strdup(opt->str); + qemu_opt_del(opt); + } + return str; +} + bool qemu_opt_has_help_opt(QemuOpts *opts) { QemuOpt *opt; @@ -583,6 +603,27 @@ bool qemu_opt_get_bool(QemuOpts *opts, const char *name, bool defval) return opt->value.boolean; } +bool qemu_opt_get_bool_del(QemuOpts *opts, const char *name, bool defval) +{ + QemuOpt *opt = qemu_opt_find(opts, name); + const QemuOptDesc *desc; + Error *local_err = NULL; + bool ret = defval; + + if (opt == NULL) { + desc = find_desc_by_name(opts->list->desc, name); + if (desc && desc->def_value_str) { + parse_option_bool(name, desc->def_value_str, &ret, &local_err); + assert(!local_err); + } + return ret; + } + assert(opt->desc && opt->desc->type == QEMU_OPT_BOOL); + ret = opt->value.boolean; + qemu_opt_del(opt); + return ret; +} + uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval) { QemuOpt *opt = qemu_opt_find(opts, name); @@ -619,6 +660,28 @@ uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval) return opt->value.uint; } +uint64_t qemu_opt_get_size_del(QemuOpts *opts, const char *name, + uint64_t defval) +{ + QemuOpt *opt = qemu_opt_find(opts, name); + const QemuOptDesc *desc; + Error *local_err = NULL; + uint64_t ret = defval; + + if (opt == NULL) { + desc = find_desc_by_name(opts->list->desc, name); + if (desc && desc->def_value_str) { + parse_option_size(name, desc->def_value_str, &ret, &local_err); + assert(!local_err); + } + return ret; + } + assert(opt->desc && opt->desc->type == QEMU_OPT_SIZE); + ret = opt->value.uint; + qemu_opt_del(opt); + return ret; +} + static void qemu_opt_parse(QemuOpt *opt, Error **errp) { if (opt->desc == NULL) @@ -656,7 +719,7 @@ static bool opts_accepts_any(const QemuOpts *opts) } static void opt_set(QemuOpts *opts, const char *name, const char *value, - bool prepend, Error **errp) + bool prepend, bool replace, Error **errp) { QemuOpt *opt; const QemuOptDesc *desc; @@ -668,6 +731,11 @@ static void opt_set(QemuOpts *opts, const char *name, const char *value, return; } + opt = qemu_opt_find(opts, name); + if (replace && opt) { + qemu_opt_del(opt); + } + opt = g_malloc0(sizeof(*opt)); opt->name = g_strdup(name); opt->opts = opts; @@ -689,7 +757,25 @@ int qemu_opt_set(QemuOpts *opts, const char *name, const char *value) { Error *local_err = NULL; - opt_set(opts, name, value, false, &local_err); + opt_set(opts, name, value, false, false, &local_err); + if (error_is_set(&local_err)) { + qerror_report_err(local_err); + error_free(local_err); + return -1; + } + + return 0; +} + +/* + * If name exists, the function will delete the opt first and then add a new + * one. + */ +int qemu_opt_replace_set(QemuOpts *opts, const char *name, const char *value) +{ + Error *local_err = NULL; + + opt_set(opts, name, value, false, true, &local_err); if (error_is_set(&local_err)) { qerror_report_err(local_err); error_free(local_err); @@ -702,7 +788,7 @@ int qemu_opt_set(QemuOpts *opts, const char *name, const char *value) void qemu_opt_set_err(QemuOpts *opts, const char *name, const char *value, Error **errp) { - opt_set(opts, name, value, false, errp); + opt_set(opts, name, value, false, false, errp); } int qemu_opt_set_bool(QemuOpts *opts, const char *name, bool val) @@ -749,6 +835,16 @@ int qemu_opt_set_number(QemuOpts *opts, const char *name, int64_t val) return 0; } +int qemu_opt_replace_set_number(QemuOpts *opts, const char *name, int64_t val) +{ + QemuOpt *opt = qemu_opt_find(opts, name); + + if (opt) { + qemu_opt_del(opt); + } + return qemu_opt_set_number(opts, name, val); +} + int qemu_opt_foreach(QemuOpts *opts, qemu_opt_loopfunc func, void *opaque, int abort_on_failure) { @@ -926,7 +1022,7 @@ int qemu_opts_print(QemuOpts *opts) } static int opts_do_parse(QemuOpts *opts, const char *params, - const char *firstname, bool prepend) + const char *firstname, bool prepend, bool replace) { char option[128], value[1024]; const char *p,*pe,*pc; @@ -962,7 +1058,7 @@ static int opts_do_parse(QemuOpts *opts, const char *params, } if (strcmp(option, "id") != 0) { /* store and parse */ - opt_set(opts, option, value, prepend, &local_err); + opt_set(opts, option, value, prepend, replace, &local_err); if (error_is_set(&local_err)) { qerror_report_err(local_err); error_free(local_err); @@ -978,7 +1074,13 @@ static int opts_do_parse(QemuOpts *opts, const char *params, int qemu_opts_do_parse(QemuOpts *opts, const char *params, const char *firstname) { - return opts_do_parse(opts, params, firstname, false); + return opts_do_parse(opts, params, firstname, false, false); +} + +int qemu_opts_do_parse_replace(QemuOpts *opts, const char *params, + const char *firstname) +{ + return opts_do_parse(opts, params, firstname, false, true); } static QemuOpts *opts_parse(QemuOptsList *list, const char *params, @@ -1017,7 +1119,7 @@ static QemuOpts *opts_parse(QemuOptsList *list, const char *params, return NULL; } - if (opts_do_parse(opts, params, firstname, defaults) != 0) { + if (opts_do_parse(opts, params, firstname, defaults, false) != 0) { qemu_opts_del(opts); return NULL; }