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Also provide the pointer to the latest POSIX standard that justifies the
requirement.
Reviewed by: emaste
Discussed with: rmacklem
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D53361
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Since phk rewrote the block layer ~2 decades ago, write(2) can return
EINVAL when the target is a block device and nbytes, the write size, is
not a multiple of the sector's block size.
From the original PR:
When coming from Linux, people are surprised by the fact
that write(2) to a device must be aligned to block size.
Writing a non-aligned block onto a raw device is a case
where EINVAL is also returned but the manpage does not mention this.
MFC after: 3 days
PR: 227185
Reported by: riggs
Reviewed by: imp, Pau Amma <pauamma@gundo.com>
Differential Revision: https://reviews.freebsd.org/D51138
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The "-W" option for disklabel(8) was retired in:
f080d33b66306419b40c2f2a879198d3d5a8d36c
The ioctl used by the "-W" option, DIOCWLABEL, was retired in:
5777c5b9895805c33f1da4f72a3b5b297727888b
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Remove core system call implementations and documentation to lib/libsys
and lib/libsys/<arch> from lib/libc/sys and lib/libc/<arch>/<sys>.
Update paths to allow libc to find them in their new home.
Reviewed by: kib, emaste, imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/908
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