sys/uio.h: Use __inline instead of inline for C89 compatibility.

Fixes https://github.com/haikuports/haikuports/issues/10822.

sys/uio: Add preadv/pwritev.

Fixes #18243.

Change-Id: Ib5867f86100430f5e5c43ce4b2d6d561f546cc1e
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6068
Reviewed-by: waddlesplash <waddlesplash@gmail

sys/uio: Add preadv/pwritev.

Fixes #18243.

Change-Id: Ib5867f86100430f5e5c43ce4b2d6d561f546cc1e
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6068
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

show more ...