From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from xry111.site (xry111.site [89.208.246.23]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 281753F9FC; Mon, 24 Jun 2024 08:54:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=89.208.246.23 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719219256; cv=none; b=pimljDXJ0dSDZP2MbtXDs67lFYZW7t9S/zoQhqPS47bCSSxy7OEPgXLpIw12GSVZLNFLqgfuSsVLu/c5v3lIvi9OTqUtWgNA/7AW3T+zT0V6a8O020kFiDCBeX5YH2HC2cGeO+tZspyZabytjmXCpfanXHFhzlJHXX6ZdluF+RE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719219256; c=relaxed/simple; bh=ocOc6W3nfjA+v3b4b9fjy6xI5w/ljliH+Jjzy0nLkVM=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=np2a4wCe5F2mgtmPsNxRRyMhh39WI9A4CHp6sawlmnvyzK2Qdzj1ABWX+Uz6JRlKXYEwUHYK4dtULmolkIH9YB7Q0P9NE66GaLJjEDwdkZIHg0JSKPUC7WZbjNcMxgcxTYb7fTw4l/yoj9xgTfCzunDQfaw/eBNqyW0LJcS2Tjw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=xry111.site; spf=pass smtp.mailfrom=xry111.site; dkim=pass (1024-bit key) header.d=xry111.site header.i=@xry111.site header.b=AfhLmru7; arc=none smtp.client-ip=89.208.246.23 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=xry111.site Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=xry111.site Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=xry111.site header.i=@xry111.site header.b="AfhLmru7" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=xry111.site; s=default; t=1719219251; bh=ocOc6W3nfjA+v3b4b9fjy6xI5w/ljliH+Jjzy0nLkVM=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=AfhLmru7Qv3f7wTCe3qV9sByoGRlleaLUkuQKamVOOzyqE+CiUT09S7ACn/2mj3qQ 7wsXwdY6YtcSkIrxy7xro2vZXJIj0cvB7/AKUQOm5KbxKQuT7UgvocAwq0KqA8zQyP 2S1MuiNHwcx0saKlRuYtkls5WvXjV4brZ8z2GWj4= Received: from [127.0.0.1] (unknown [IPv6:2001:470:683e::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature ECDSA (P-384)) (Client did not present a certificate) (Authenticated sender: xry111@xry111.site) by xry111.site (Postfix) with ESMTPSA id AD8DD66C03; Mon, 24 Jun 2024 04:54:05 -0400 (EDT) Message-ID: <220432a52aecc31dea32178bf230bb2ce262b6e9.camel@xry111.site> Subject: Re: [PATCH v2] vfs: Shortcut AT_EMPTY_PATH early for statx, and add AT_NO_PATH for statx and fstatat From: Xi Ruoyao To: Christian Brauner , Alexander Viro , Jan Kara , Mateusz Guzik , Linus Torvalds Cc: Alejandro Colomar , Arnd Bergmann , Huacai Chen , Xuerui Wang , Jiaxun Yang , Icenowy Zheng , linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, loongarch@lists.linux.dev, linux-kernel@vger.kernel.org Date: Mon, 24 Jun 2024 16:54:03 +0800 In-Reply-To: <20240624085037.33442-2-xry111@xry111.site> References: <20240624085037.33442-2-xry111@xry111.site> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.52.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Mon, 2024-06-24 at 16:50 +0800, Xi Ruoyao wrote: > Seccomp sandboxes can also green light fstatat/statx(AT_NO_PATH) easier > than fstatat/statx(AT_EMPTY_PATH) for which the audition needs to check > 5434782543478254347825434782the path but seccomp BPF program cannot do th= at now. Oops "5434782543478254347825434782" is meaningless. Not sure how it ended up in my commit message. I'll remove it in v3 but now just waiting for comments. --=20 Xi Ruoyao School of Aerospace Science and Technology, Xidian University