linux-kernel - Re: [PATCH v2] vfs: Shortcut AT_EMPTY_PATH early for statx, and add AT_NO

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Message-ID: <220432a52aecc31dea32178bf230bb2ce262b6e9.camel@xry111.site>
Date: Mon, 24 Jun 2024 16:54:03 +0800
From: Xi Ruoyao <xry111@...111.site>
To: Christian Brauner <brauner@...nel.org>, Alexander Viro
	 <viro@...iv.linux.org.uk>, Jan Kara <jack@...e.cz>, Mateusz Guzik
	 <mjguzik@...il.com>, Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Alejandro Colomar <alx@...nel.org>, Arnd Bergmann <arnd@...db.de>, 
 Huacai Chen <chenhuacai@...ngson.cn>, Xuerui Wang <kernel@...0n.name>,
 Jiaxun Yang <jiaxun.yang@...goat.com>,  Icenowy Zheng <uwu@...nowy.me>,
 linux-fsdevel@...r.kernel.org, linux-arch@...r.kernel.org, 
 loongarch@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] vfs: Shortcut AT_EMPTY_PATH early for statx, and add
 AT_NO_PATH for statx and fstatat

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 that 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.

-- 
Xi Ruoyao <xry111@...111.site>
School of Aerospace Science and Technology, Xidian University