From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f50.google.com (mail-ej1-f50.google.com [209.85.218.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 983EC2BAF9 for ; Tue, 14 Oct 2025 04:13:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.50 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760415212; cv=none; b=O8AsYF31I4m1AvXoT8WkcMSa1E5IiKT8TzhJj8b22ZxPliNq7dlN23JbY1AvD1Rj4+B3eRr8LYEe1IdZcGWHjy2DQodPWH0pf+TL1Efrke9aPFWDEqhbPZugottXJpwCybCL/P0EqapdZQjQpd002YcgOBm+iLNs6+D+ZXPty5g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760415212; c=relaxed/simple; bh=BD5BG+J+Iv4x7sZ0ZYEcFMBWcl3it+BMD+XKSw/pSfI=; h=Mime-Version:Content-Type:Date:Message-Id:Subject:From:To; b=e/mwUzQ0kPdRj5IJbMC0i0Hz7QfDxpRXlBjtcsFjW1+jNIVuzIGRu2LN+jF/6seOM7FsvKZQw1x/DH8Ef0ndSeJwKDVeQPdpxLSBspWxmF30B8zaSIGnORl08iuiU7jXL9fwzysJYRSvrWVj7xi5RmYHPXzQvr4u397o706V6O8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=PS4C6Vik; arc=none smtp.client-ip=209.85.218.50 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="PS4C6Vik" Received: by mail-ej1-f50.google.com with SMTP id a640c23a62f3a-b403bb7843eso1045708866b.3 for ; Mon, 13 Oct 2025 21:13:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1760415209; x=1761020009; darn=vger.kernel.org; h=to:from:subject:message-id:date:content-transfer-encoding :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=Hba2QyDVHqDSBRvj8xwSi+VE5t8MeaaCWOLmMRvl0zc=; b=PS4C6Vikur9AT0MgjXScRUiCr/jabdrXMZp32JXqVuWEH/PeVu3liXyG00wHnoXofE VRuppITXkHDEFWWJa1wZ50GDcmF5dcODf5spSpTPY4hI2COSFbEPYXO07FRtyPM8qOfh do4fgdMjKTFKhUfRKGbP3t4m0IlbfgGfY8Zt0T0weO/gl33DxkHSyy1gvBurCfOo1om/ aaKCEnxx+3SFBQoL9SQI3668QSo/iT1m5MWHOThTZAofat66Zr8FZb9tqPSDh13/+gfF iZ4K82U80v3B5HnodxW0DAKC4hFk44XFUACp7VhgrrgIHok6f18AwN/ZXp2tIL9GUhLn Rfvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1760415209; x=1761020009; h=to:from:subject:message-id:date:content-transfer-encoding :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=Hba2QyDVHqDSBRvj8xwSi+VE5t8MeaaCWOLmMRvl0zc=; b=pOEl/9K3tA64o0TREQZ1sEcx2nSyZjJCfRz94TN3mvOmRNKBOTTNmBk14m3+rtfKgJ M+3JuVImj0OBJDyioGY8a0ld2FamO+aUt8GcXLwnnluQggUlM3AiAQS2QB3m9Oc+8PkF XCT6v2purTt3xlAxgxpBEAutiUvIip7dlV+JAs2FPuIhBcEreLqbuHMkGFFk+LePrxYI nJ9PHbg/defHCE2IMlcbp5pSFxMs6hcCDC9iltVJ/uLHbqniJ2sA4pyG1AdvbIoSDy8z jpVMajsR6wr1p6or9rRmT6J3Pq+FrNf1ksTc00PEolUGUiIj22bw5rQEq9QK/V/qhgIe G9Qg== X-Gm-Message-State: AOJu0YxQG6xIiVkIgF2F+s223SwLVPXYlO56xCEOHtcrqzpjaT2E67Mt krgX0JF3vX8+9ddqRfbMjpfEu+WUNRD8hQpcxfIb2QVXgEbkrIbouU9DS/5How== X-Gm-Gg: ASbGncvERN1l4qdf4IibJ69tdtKaZc7Jhvj9go7BnMpnkKG35TlqAjjhyoWSwP+azFh bvY280Lh8Q8ozo2vCTEMPLXtrdEiH1Gj4T/5+NvtnfpQKFsbkV7YeYWwIetulkzxYa73xNZ9udo 6/UP3DKqBWl4eBQFUZwjyJFZ61sKnqsOCdC6aLa5YwcNXb6QABlijBMxQkSViU0Xr5uN0mdndVa 2dL9Gr198c1gN67ANNRrjHOFMgBlzcshHv+NlXlzM+vRyMkmaEyUkapNyevuO6TJ4dy3wG5FeRl j78vBiga3yIcZmgLPa93OUDmKdZm2sinU+GD/XpPX7DfnAFLZdMYRAJlFCzGTN/sj6W/t7k6ZdP VTbPoLOUqZTUsTkF/aRcetRvE4zNXDG+5SwPN8Mkd4eYnIA== X-Google-Smtp-Source: AGHT+IEL8BQ8mt956tpXTgg5lKS5oaNvkAom//l2ECSPwFoKh2ht/Fs1pG8zP9O0oIMmmJ7PgtMAtQ== X-Received: by 2002:a17:907:c28:b0:b46:3f98:6ba5 with SMTP id a640c23a62f3a-b50aa48e3a6mr2730354066b.11.1760415208807; Mon, 13 Oct 2025 21:13:28 -0700 (PDT) Received: from localhost ([2a0a:ef40:89b:b900:2e0:4cff:feb0:4e4d]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b55d5cad86csm1036789866b.17.2025.10.13.21.13.28 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 13 Oct 2025 21:13:28 -0700 (PDT) Precedence: bulk X-Mailing-List: selinux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Tue, 14 Oct 2025 05:13:28 +0100 Message-Id: Subject: confusion regarding the setcap permission From: "Rahul Sandhu" To: X-Mailer: aerc 0.20.1 Hi, I'm looking at the class process' permission setcap, and I'm a bit confused as to what it actually grants. The SELinux Notebook describes setcap as follows: > Set Linux capabilities of process. However I'm not really sure what's going on here: 1. What syscall is actually used to set capabilities of a process? 2. What processes is it allowed to set? Assuming that the process is started with dac_override (granted both on its executable file and the SELinux domain it runs in), would setcap allow it to only set dac_override? Would it allow it to set other permissions? Thanks, Rahul