cvs commit: src/sbin/mount mntopts.h mount.8 mount.c
phk at phk.freebsd.dk
Tue Nov 30 11:41:05 PST 2004
In message <20041130192316.GB3845 at ip.net.ua>, Ruslan Ermilov writes:
>> The reason I did not remove MNT_NODEV but only #defined it to zero was
>> to make it silently ignored.
>To make it silently ignored, you should have left it with its old value.
>Most operations with MNT_* constants are "bitwise AND", and so zero was
>not a good choice.
I tried to find my copy of "Bitmaps for dummies" to check what
you're saying but I can't find it right now, still, I'm very sure
that you are wrong, I just don't have the book to prove it.
Most operations on MNT_* are "bitwise OR" and a zero is perfectly OK.
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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