Re: [yocto-patches] [pseudo] [PATCH] linkat: Fix AT_EMPTY_PATH handling

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On Fri, 2026-07-17 at 14:19 +0100, Richard Purdie via
lists.yoctoproject.org wrote:
> Currently we don't cover the case where AT_EMPTY_PATH is set for atlink.

Typo: s/atlink/linkat/

> Update the code to handle this case in a similar way to the /proc/self
> case which is similar.
>=20
> This is used by some systemd tools which OE might run at rootfs time
> such as hwdb generation.
>=20
> Signed-off-by: Richard Purdie <[email protected]>
> ---
>  ports/unix/guts/linkat.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
>=20
> diff --git a/ports/unix/guts/linkat.c b/ports/unix/guts/linkat.c
> index 60fbf63..36ffc0f 100644
> --- a/ports/unix/guts/linkat.c
> +++ b/ports/unix/guts/linkat.c
> @@ -35,13 +35,18 @@
>  	}
>  #endif
>  	oldpath =3D oldname;
> -	if (pseudo_chroot_len && !strncmp(oldpath, pseudo_chroot, pseudo_chroot=
_len) &&
> +	if (oldpath && !*oldpath && pseudo_chroot_len && !strncmp(oldpath, pseu=
do_chroot, pseudo_chroot_len) &&

Should this be if (oldpath && *oldpath && ... ?

i.e. if oldpath is non-NULL and has non-zero length.

Best regards,

--=20
Paul Barker


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