Re: Add fchmodat2() - or add a more general syscall?

From: Florian Weimer
Date: Tue Jul 25 2023 - 12:12:16 EST


* David Howells:

> Rather than adding a fchmodat2() syscall, should we add a "set_file_attrs()"
> syscall that takes a mask and allows you to set a bunch of stuff all in one
> go? Basically, an interface to notify_change() in the kernel that would allow
> several stats to be set atomically. This might be of particular interest to
> network filesystems.

Do you mean atomically as in compare-and-swap (update only if old values
match), or just a way to update multiple file attributes with a single
system call?

Thanks,
Florian