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[173.197.98.125]) by smtp.gmail.com with ESMTPSA id b11-20020a170903228b00b001dca40bb727sm6951739plh.88.2024.03.12.11.41.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Mar 2024 11:41:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1710268881; x=1710873681; 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=QKNDOo6U9WbWCegGn24r6lvAvz+nsA+Lj9vHcmb0thA=; b=O1UfUzrq119Jigr/rpTlHEGtLihd5bXCPpx7mEYtyjypD1LGsH8jBUVwe2coK2dSi7 ndK1Q4QeokUew+YHnZ0nmw3UVLsZug7WjzMqzOQgMY4XHZSQ70ZPGcfC5Di9dPk+ssJJ 5qfxFLiidSTwkmokALZz+D1/gP7e7O3QIGzxfojyCM3L8dyBcGIJ1JAP6x0kIVd52jWk oBQoWnWC1iAugGYYX6FVDM2Go+gJ+Xvufbd4FUa07nDYou6uNkDXhczbb1NAH9teZz6i FlVHElV94NTe4R8NUXDNk1CDM6icpCF6ZyjfkBZMT/oBY4nXGqI6scH1rCgshM1j3o7P YsnQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710268881; x=1710873681; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=QKNDOo6U9WbWCegGn24r6lvAvz+nsA+Lj9vHcmb0thA=; b=qDcyLWOFs802Em+tSJDi/Bb9tbY6ISfNp9f1eqvpTp5zq3nLtWTdigG5i/2Zzz6U3L Qv9P46xrvdKsbpEk6H8VCbDPpRAoCF3YUl+FfX5cvxC1JpXNS9RO7YrNoXQJS24hlvLy +DVpwzw2fQfG+CxxNmOrO+sd7rkU3/nIv89G7Am5B+3A5gLbNpiLLYpTVF+11Q8JSFzt Cmu5xow33dlpZYRcXtDkX/PToZKgqM1+lelTVAm94NWKVfRwwpsKN+iJ8u5k726CoVRu 0hOsarE6j/ThP0L3SoX2doM08gFTxtk/8V+FWCJhRXbaVFnHFGua3Gs1LOJ/p7I/8Jyu XoRg== X-Gm-Message-State: AOJu0YzHgc+3fX/lM/Dw6cAL98NdfeWL+XyN/ToBSOoG5uQyHb8s+qdi MoHr1vHeGTYCa8P87KTlW+O5x2/RdnbRSvNZIuCW9XwUhhlIWSCocgsnSzy7UzINXXlwSrzRssH 8 X-Google-Smtp-Source: AGHT+IF91ZKLOJ18NdpZ/BaIPimdVv/3jx8yvdEbzx0guldfvggW7qCMIr5Z4p/nJgjvkiJvlOH50Q== X-Received: by 2002:a17:902:7b95:b0:1db:35b5:7e37 with SMTP id w21-20020a1709027b9500b001db35b57e37mr10238450pll.50.1710268880865; Tue, 12 Mar 2024 11:41:20 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Peter Maydell Subject: [PULL 2/8] linux-user: Implement PR_{GET,SET}_CHILD_SUBREAPER Date: Tue, 12 Mar 2024 08:41:09 -1000 Message-Id: <20240312184115.365415-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240312184115.365415-1-richard.henderson@linaro.org> References: <20240312184115.365415-1-richard.henderson@linaro.org> 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: pass client-ip=2607:f8b0:4864:20::62f; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, T_SPF_HELO_TEMPERROR=0.01 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: 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 @linaro.org) X-ZM-MESSAGEID: 1710268927791100007 Content-Type: text/plain; charset="utf-8" The "set" prctl passes through integral values. The "get" prctl returns the value into a pointer. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1929 Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- linux-user/syscall.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 597bdf0c2d..0801ae124d 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -6450,11 +6450,21 @@ static abi_long do_prctl(CPUArchState *env, abi_lon= g option, abi_long arg2, case PR_SET_NO_NEW_PRIVS: case PR_GET_IO_FLUSHER: case PR_SET_IO_FLUSHER: + case PR_SET_CHILD_SUBREAPER: /* Some prctl options have no pointer arguments and we can pass on= . */ return get_errno(prctl(option, arg2, arg3, arg4, arg5)); =20 case PR_GET_CHILD_SUBREAPER: - case PR_SET_CHILD_SUBREAPER: + { + int val; + ret =3D get_errno(prctl(PR_GET_CHILD_SUBREAPER, &val, + arg3, arg4, arg5)); + if (!is_error(ret) && put_user_s32(val, arg2)) { + return -TARGET_EFAULT; + } + return ret; + } + case PR_GET_SPECULATION_CTRL: case PR_SET_SPECULATION_CTRL: case PR_GET_TID_ADDRESS: --=20 2.34.1