linux-kernel - Re: [PATCH 0/2] statx NULL path support

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Date: Mon, 01 Jul 2024 14:46:27 +0800
From: Xi Ruoyao <xry111@...111.site>
To: Christoph Hellwig <hch@...radead.org>, Mateusz Guzik <mjguzik@...il.com>
Cc: brauner@...nel.org, viro@...iv.linux.org.uk, jack@...e.cz, 
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, 
	io-uring@...r.kernel.org, axboe@...nel.dk, torvalds@...ux-foundation.org, 
	loongarch@...ts.linux.dev, Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH 0/2] statx NULL path support

On Sun, 2024-06-30 at 21:38 -0700, Christoph Hellwig wrote:
> Maybe it's time and declarate the idea to deprecate stat a failure
> and we just add it back to the new generic ABI syscalls?

> The idea to get rid of layers of backwards compatibility was a good one
> and mostly succeeded, but having to deal with not only remapping
> the structure but also the empty path issues sounds like it is worth
> to just add these pretty trivial system calls back and make everyones
> life easier?

Maybe but we'll need to make time_t 64-bit.  I.e. adding stat_time64,
fstat_time64, and fstatat_time64.  Or maybe just redesign a new syscall
which is a improved statx with empty path issue and remapping issue
solved.  (With statx itself it seems impossible to solve the remapping
issue...)

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