From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by sourceware.org (Postfix) with ESMTPS id 4D2DA3858D1E for ; Sun, 12 Mar 2023 06:44:47 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 4D2DA3858D1E Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-pj1-x1034.google.com with SMTP id l1so9112095pjt.2 for ; Sat, 11 Mar 2023 22:44:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; t=1678603486; h=content-transfer-encoding:to:content-language:subject:from :user-agent:mime-version:date:message-id:from:to:cc:subject:date :message-id:reply-to; bh=G6LF/SRTzHBwuHulUkvtd6T2nUw6pbbFwWcPfI5sV6U=; b=nY0Gt4lwX7ztrQU19gbku3RgHPFF7bEvgQCJnZ/LzdxfvWj8f8ftNTPee63qP04Rho rrzSEtHzd8YSoG/OhTp3oTIOGkNtvcp8DnMDVuWIYXb5o6pOOD44aRvGGs2OeDTiKBbE dEHtL53peC0bjJ/L1UHAi6IpYgqDps9FRosGeZaxO5tAtSukyvI9lM5nLtozcoRzJyGu qAiWygzIerPRyYTrlxvx1bCDWkFXxTuODMGwEtJm+uEPnZfQApMjc4clBwM6DBiK5kGh iohvXfb/LX7+Q6+PdAxsO7wMNCLvR0YGoXSxj2Khl8Tr1NHfRG2KDXFYgrg1yTdpTphi AstA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678603486; h=content-transfer-encoding:to:content-language:subject:from :user-agent:mime-version:date:message-id:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=G6LF/SRTzHBwuHulUkvtd6T2nUw6pbbFwWcPfI5sV6U=; b=yD0Wb2dz8vmGIZjQRJ3zZYxvdDrwvQiXfQ0RatTRE3k5ymymeAPkkVTkK3dd30qbhY C/tQkYnqk2I4s6hNUXZHDjmXdYVP1cI36v8lPeCuNf7JGpgZFg7nF2YmL/yGoF6J4fKN 6BXjDjlwc4D1lE6CPh1W0Uat8VVvslm/jiJ6EQ+PJEZj8mRx4ce0UUyTN8jflEhFjvS4 gHBGG6eSjmS53+DG0k60iIijkT+WxqT9zgkHxr5ejxekXTZX5MkhBH/Fqn65bKtudXYY ArD3jgBdr6bo4zbt3VwTBgg690fxUth7xr5VEoEU7j1xmX1YWtVKOqIwC5/nle97vBz4 pMFQ== X-Gm-Message-State: AO0yUKUX2MrL3x1dVRzliUEkc4RLaWkJie21mMcJ7JQjW22ETY/cw9KV G91P09EEMj5KPO9H47RUsptfkrhpAEM= X-Google-Smtp-Source: AK7set8C5PEiufxeFD7wuIqO0KmK/YwFFaUwy0VHDvrct1Dk9nE+UxALH6I5kMls4SNsdGvcqp/E1g== X-Received: by 2002:a17:902:d502:b0:19d:16e4:ac0f with SMTP id b2-20020a170902d50200b0019d16e4ac0fmr38293845plg.5.1678603485940; Sat, 11 Mar 2023 22:44:45 -0800 (PST) Received: from [192.168.0.6] (n175-38-40-102.meb1.vic.optusnet.com.au. [175.38.40.102]) by smtp.gmail.com with ESMTPSA id q22-20020a170902789600b0019aafc422fcsm2346219pll.240.2023.03.11.22.44.44 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 11 Mar 2023 22:44:45 -0800 (PST) Message-ID: Date: Sun, 12 Mar 2023 17:44:43 +1100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 From: Matthew Rickard Subject: 3.4.6-1 shm_open always returns -1, errno EINVAL Content-Language: en-US To: cygwin@cygwin.com Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-1.3 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: Hi all, Cygwin 3.4.6-1 shm_open seems to reject all calls, returning  the value -1 and setting errno to 22 EINVAL. For example, this program: #include #include #include #include int main() {   int res = shm_open("123", O_CREAT | O_RDWR, 0666);   int error = errno;   printf("res=%d errno=%d\n", res, errno);   if (error == EINVAL)     printf("That's EINVAL\n");   return 0; } Says: $ gcc -Og -o tiny tiny.c; ./tiny res=-1 errno=22 That's EINVAL Not sure if relevant, but I am currently running cygserver, with a default config.