From nobody Mon Mar 2 10:39:47 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1772425403; cv=none; d=zohomail.com; s=zohoarc; b=YjaLuLj5kzZcwTHra5CKHCB7TyCqNtcKdi7z94VvQ+8U//dG+leweG2dZ3YQjEWoj14sM9LbBCteyQV/+eSPk7kXLYt0fJHVCP+ItqQZlB15Z16VwZTT3pnlGVg4Y4P36gWOoLd67LPErSe2Pgm85wNhP98wc9UuMvl9t82dyBU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1772425403; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=Hx+/gdtLWNB9rjxJsdlIe5kmr094F/qIQlvquqXpjHU=; b=H7OPfYRTUL6OOJ80TxVW738USm0EpPp5UaoyNzeZTTt/rRKpv/orYmk8QDkJmqA1q8c+EM2b4SvW+/1Ke13uIBesabb8ihC8MGl/JhXaNZBmWBO9No5x+getDBzcu84cS6k/ncrvvIPZBhRKL5oOPCjojKXYZYLofPApkI73cs4= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 177242540390825.726966169436878; Sun, 1 Mar 2026 20:23:23 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vwumz-0000zw-Vd; Sun, 01 Mar 2026 23:21:49 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vwumz-0000zY-5V for qemu-devel@nongnu.org; Sun, 01 Mar 2026 23:21:49 -0500 Received: from mail-ot1-x32b.google.com ([2607:f8b0:4864:20::32b]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1vwumx-0006pI-KR for qemu-devel@nongnu.org; Sun, 01 Mar 2026 23:21:48 -0500 Received: by mail-ot1-x32b.google.com with SMTP id 46e09a7af769-7d18f80b5c2so2660784a34.3 for ; Sun, 01 Mar 2026 20:21:47 -0800 (PST) Received: from rebo.bsdimp.com ([50.253.99.174]) by smtp.gmail.com with ESMTPSA id 586e51a60fabf-41668233c4bsm2236778fac.19.2026.03.01.20.21.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 01 Mar 2026 20:21:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20230601.gappssmtp.com; s=20230601; t=1772425306; x=1773030106; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Hx+/gdtLWNB9rjxJsdlIe5kmr094F/qIQlvquqXpjHU=; b=RMCDwpXKTibOpBx+Y4shERjmVeNJGkILpBzq6OvWxrl7C4BJ+A6UsvbpHwN4D2oNQA O9ROp6ngLbWqjb9ZZE0MuBswKTlxO8RRX2ZQvkSWNQ71gatffzHPe+8S0BOIHFu6U8PU pMWLGITAEkBqugh5GzpCFt2hNL9/+EQSDjfBXRNGIMKjx1NYaGDq7aozkLYdfu2T2/Gx zkGpvd3OMKZ7X+6dqeXgQO/d3EldA/erDkOsx6nebvFS7WT4GEZrcPiwNDw8hDQlX/I9 ELf3OSE0CFrmXl2PUuwtmOBG7kK5ABMqoe87JvysHl4w11CH6hmZLLz1mdAUFSifkbF4 29yA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772425306; x=1773030106; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=Hx+/gdtLWNB9rjxJsdlIe5kmr094F/qIQlvquqXpjHU=; b=woGOtBJxhxf2X8//vz+r57SviqQRfQwYLmdYQuKBTwjoog4UPnCDjN8Xb+5xd3AxJC BcA2HhT/VpmOYhVb4WTLX61CB9sp5IGx9U2ynJdF4NrIJihJkp0QaiOfykprfTZQ0WW+ wahvWMYypuCWaezWRxBfPqpFCZ+NJk3L6qAc6P4WxZfrLuah+Tlg5nQ2aq4007Bka/le UL7W7H7CW0hAH0QBJdp2LsfhAEfr+R4FVYPL7vpTWgC9KusjQBAf0CLQS3S/9cR3WWzH thGkiGJ8OdrffB9cs0i0T6fYLzSQn2lGFpS5XXqJPNCNxVFE0+Z/LM8DzUYiLb8U+XcV RVOQ== X-Gm-Message-State: AOJu0Yw/7DTAZe30qc27xrPF7ClwSKEGHlOQoeYd2WwdLXGGYjmwEC2s gnv8C7JmxZ3ly7N7heiC+UETxSH4pTMKJxGGfKFP9pU46fnYSrahNqrnEPmif5nCIOoUksJ2dE4 aRPou X-Gm-Gg: ATEYQzzF/FDqHfEkZxGa3XkuYx31KNWUKRrwE0M7ueMXD67NSHjsuLSImdcXDzvwNFW zDHhr9+aNaRWW9LbAhA52f4XdseSfBqq0DOg3L88tp+gYZwlwldvEOI1VpFx2D7vSdK4Uq7Kr4H +Eydotm3QVFIZ4TSNSMng9vi11XagQXAQTR0ReQBN+iuJ7rJjtlbvtdmulqPXQRBou1eQetys73 TsrTOPBQkIn5aLX7ptUrDBRdF2Bpa0QGJLdyer8hL6KeTsz6iNLgC/W1CqGoip2MnE0ZmYx9quP n6tCwvzzpdSnHPQ426BRIVMqQFpoAu3Ub0jyJmLjsFXv4tyAgnjoq3jOaKkKJ/BO5oI7z4Q0ERL 388rCLUua7+Jr4iiBdPywAqW4yXemcct95SSv2bixY00aRKVG6NgJeHmBsirLxEGkmOjMkS/2+z 7tjJutf0KqAg== X-Received: by 2002:a05:6871:cd:b0:40e:e3f6:bc9d with SMTP id 586e51a60fabf-41627102a5dmr7356143fac.43.1772425305858; Sun, 01 Mar 2026 20:21:45 -0800 (PST) From: Warner Losh To: qemu-devel@nongnu.org Cc: Reinoud Zandijk , Warner Losh , Ryo ONODERA , Paolo Bonzini , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Kyle Evans , Brad Smith , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Riku Voipio , Stacey Son , Richard Henderson Subject: [PULL 09/27] bsd-user: Add target_to_host_semarray for semaphore operations Date: Sun, 1 Mar 2026 21:20:57 -0700 Message-ID: <20260302042115.83410-10-imp@bsdimp.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260302042115.83410-1-imp@bsdimp.com> References: <20260302042115.83410-1-imp@bsdimp.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=2607:f8b0:4864:20::32b; envelope-from=imp@bsdimp.com; helo=mail-ot1-x32b.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @bsdimp-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1772425404972158500 Content-Type: text/plain; charset="utf-8" From: Stacey Son Add target_to_host_semarray() to convert target semaphore array to host format for semctl(2) SETALL operations. Signed-off-by: Stacey Son Reviewed-by: Richard Henderson Signed-off-by: Warner Losh --- bsd-user/bsd-misc.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/bsd-user/bsd-misc.c b/bsd-user/bsd-misc.c index 68b67f37ba..d1645db46b 100644 --- a/bsd-user/bsd-misc.c +++ b/bsd-user/bsd-misc.c @@ -7,6 +7,11 @@ */ #include "qemu/osdep.h" =20 +#define _WANT_SEMUN +#include +#include +#include +#include #include =20 #include "qemu.h" @@ -33,3 +38,33 @@ abi_long host_to_target_uuid(abi_ulong target_addr, stru= ct uuid *host_uuid) unlock_user_struct(target_uuid, target_addr, 1); return 0; } + +abi_long target_to_host_semarray(int semid, unsigned short **host_array, + abi_ulong target_addr) +{ + abi_long ret; + int nsems, i; + unsigned short *array; + union semun semun; + struct semid_ds semid_ds; + + semun.buf =3D &semid_ds; + ret =3D semctl(semid, 0, IPC_STAT, semun); + if (ret =3D=3D -1) { + return get_errno(ret); + } + nsems =3D semid_ds.sem_nsems; + *host_array =3D g_new(unsigned short, nsems); + array =3D lock_user(VERIFY_READ, target_addr, + nsems * sizeof(unsigned short), 1); + if (array =3D=3D NULL) { + free(*host_array); + return -TARGET_EFAULT; + } + for (i =3D 0; i < nsems; i++) { + __get_user((*host_array)[i], array + i); + } + unlock_user(array, target_addr, 0); + + return 0; +} --=20 2.52.0