Re: [PATCH] vfs: add faccessat2 syscall

[Stefan Metzmacher]

Hi Miklos,

> POSIX defines faccessat() as having a fourth "flags" argument, while the
> linux syscall doesn't have it.  Glibc tries to emulate AT_EACCESS and
> AT_SYMLINK_NOFOLLOW, but AT_EACCESS emulation is broken.
> 
> Add a new faccessat(2) syscall with the added flags argument and implement
> both flags.
> 
> The value of AT_EACCESS is defined in glibc headers to be the same as
> AT_REMOVEDIR.  Use this value for the kernel interface as well, together
> with the explanatory comment.

It would be nice if resolv_flags would also be passed in addition to the
at flags.
See:https://lore.kernel.org/linux-api/CAHk-=wiaL6zznNtCHKg6+MJuCqDxO=yVfms3qR9A0czjKuSSiA@xxxxxxxxxxxxxx/

We should avoid expecting yet another syscall in near future.

metze

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