From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3C88CC4360C for ; Fri, 4 Oct 2019 10:34:52 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 11BEB207FF for ; Fri, 4 Oct 2019 10:34:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 11BEB207FF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:45810 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iGKud-0005PT-Ph for qemu-devel@archiver.kernel.org; Fri, 04 Oct 2019 06:34:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53792) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iGK3h-0006ao-AM for qemu-devel@nongnu.org; Fri, 04 Oct 2019 05:39:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iGK3g-0006Xo-1H for qemu-devel@nongnu.org; Fri, 04 Oct 2019 05:39:33 -0400 Received: from mx1.redhat.com ([209.132.183.28]:40130) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iGK3f-0006XG-Ph for qemu-devel@nongnu.org; Fri, 04 Oct 2019 05:39:31 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 0A9B610DCCAB; Fri, 4 Oct 2019 09:39:31 +0000 (UTC) Received: from dritchie.redhat.com (unknown [10.33.36.79]) by smtp.corp.redhat.com (Postfix) with ESMTP id 34C781001B2B; Fri, 4 Oct 2019 09:39:28 +0000 (UTC) From: Sergio Lopez To: qemu-devel@nongnu.org Subject: [PATCH v6 06/10] fw_cfg: add "modify" functions for all types Date: Fri, 4 Oct 2019 11:37:48 +0200 Message-Id: <20191004093752.16564-7-slp@redhat.com> In-Reply-To: <20191004093752.16564-1-slp@redhat.com> References: <20191004093752.16564-1-slp@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.6.2 (mx1.redhat.com [10.5.110.64]); Fri, 04 Oct 2019 09:39:31 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ehabkost@redhat.com, Sergio Lopez , mst@redhat.com, lersek@redhat.com, kraxel@redhat.com, pbonzini@redhat.com, imammedo@redhat.com, sgarzare@redhat.com, philmd@redhat.com, rth@twiddle.net Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This allows to alter the contents of an already added item. Signed-off-by: Sergio Lopez --- include/hw/nvram/fw_cfg.h | 42 +++++++++++++++++++++++++++++++++++++++ hw/nvram/fw_cfg.c | 29 +++++++++++++++++++++++++++ 2 files changed, 71 insertions(+) diff --git a/include/hw/nvram/fw_cfg.h b/include/hw/nvram/fw_cfg.h index 80e435d303..b5291eefad 100644 --- a/include/hw/nvram/fw_cfg.h +++ b/include/hw/nvram/fw_cfg.h @@ -98,6 +98,20 @@ void fw_cfg_add_bytes(FWCfgState *s, uint16_t key, voi= d *data, size_t len); */ void fw_cfg_add_string(FWCfgState *s, uint16_t key, const char *value); =20 +/** + * fw_cfg_modify_string: + * @s: fw_cfg device being modified + * @key: selector key value for new fw_cfg item + * @value: NUL-terminated ascii string + * + * Replace the fw_cfg item available by selecting the given key. The new + * data will consist of a dynamically allocated copy of the provided str= ing, + * including its NUL terminator. The data being replaced, assumed to hav= e + * been dynamically allocated during an earlier call to either + * fw_cfg_add_string() or fw_cfg_modify_string(), is freed before return= ing. + */ +void fw_cfg_modify_string(FWCfgState *s, uint16_t key, const char *value= ); + /** * fw_cfg_add_i16: * @s: fw_cfg device being modified @@ -136,6 +150,20 @@ void fw_cfg_modify_i16(FWCfgState *s, uint16_t key, = uint16_t value); */ void fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value); =20 +/** + * fw_cfg_modify_i32: + * @s: fw_cfg device being modified + * @key: selector key value for new fw_cfg item + * @value: 32-bit integer + * + * Replace the fw_cfg item available by selecting the given key. The new + * data will consist of a dynamically allocated copy of the given 32-bit + * value, converted to little-endian representation. The data being repl= aced, + * assumed to have been dynamically allocated during an earlier call to + * either fw_cfg_add_i32() or fw_cfg_modify_i32(), is freed before retur= ning. + */ +void fw_cfg_modify_i32(FWCfgState *s, uint16_t key, uint32_t value); + /** * fw_cfg_add_i64: * @s: fw_cfg device being modified @@ -148,6 +176,20 @@ void fw_cfg_add_i32(FWCfgState *s, uint16_t key, uin= t32_t value); */ void fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value); =20 +/** + * fw_cfg_modify_i64: + * @s: fw_cfg device being modified + * @key: selector key value for new fw_cfg item + * @value: 64-bit integer + * + * Replace the fw_cfg item available by selecting the given key. The new + * data will consist of a dynamically allocated copy of the given 64-bit + * value, converted to little-endian representation. The data being repl= aced, + * assumed to have been dynamically allocated during an earlier call to + * either fw_cfg_add_i64() or fw_cfg_modify_i64(), is freed before retur= ning. + */ +void fw_cfg_modify_i64(FWCfgState *s, uint16_t key, uint64_t value); + /** * fw_cfg_add_file: * @s: fw_cfg device being modified diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c index 7dc3ac378e..aef1727250 100644 --- a/hw/nvram/fw_cfg.c +++ b/hw/nvram/fw_cfg.c @@ -690,6 +690,15 @@ void fw_cfg_add_string(FWCfgState *s, uint16_t key, = const char *value) fw_cfg_add_bytes(s, key, g_memdup(value, sz), sz); } =20 +void fw_cfg_modify_string(FWCfgState *s, uint16_t key, const char *value= ) +{ + size_t sz =3D strlen(value) + 1; + char *old; + + old =3D fw_cfg_modify_bytes_read(s, key, g_memdup(value, sz), sz); + g_free(old); +} + void fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value) { uint16_t *copy; @@ -720,6 +729,16 @@ void fw_cfg_add_i32(FWCfgState *s, uint16_t key, uin= t32_t value) fw_cfg_add_bytes(s, key, copy, sizeof(value)); } =20 +void fw_cfg_modify_i32(FWCfgState *s, uint16_t key, uint32_t value) +{ + uint32_t *copy, *old; + + copy =3D g_malloc(sizeof(value)); + *copy =3D cpu_to_le32(value); + old =3D fw_cfg_modify_bytes_read(s, key, copy, sizeof(value)); + g_free(old); +} + void fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value) { uint64_t *copy; @@ -730,6 +749,16 @@ void fw_cfg_add_i64(FWCfgState *s, uint16_t key, uin= t64_t value) fw_cfg_add_bytes(s, key, copy, sizeof(value)); } =20 +void fw_cfg_modify_i64(FWCfgState *s, uint16_t key, uint64_t value) +{ + uint64_t *copy, *old; + + copy =3D g_malloc(sizeof(value)); + *copy =3D cpu_to_le64(value); + old =3D fw_cfg_modify_bytes_read(s, key, copy, sizeof(value)); + g_free(old); +} + void fw_cfg_set_order_override(FWCfgState *s, int order) { assert(s->fw_cfg_order_override =3D=3D 0); --=20 2.21.0