Re: [B2-devel] Preventing double-mounts

[Dave V. <da...@va...>]

Ronald P. Regensburg wrote:
> Even if a solution like this would work, I suppose there is no way to
> prevent mounting of a disk image in OSX that is already mounted in SS/B2.

Good point Ronald, I only thought of first mounting in OS X and then
in SS, not the other way around.

Alexei Svitkine wrote:
> Perhaps SheepShaver could lock the file while in use?

I did some testing, and it looks like OS X's disk images use advisory
locks! (I'm not sure if this is documented anywhere, but I'll take
what I can get.) So we don't even need all that silly IOKit stuff,
flock() will just solve everything.

All I'm worried about now is other platforms. Can anybody think of a
good way to detect loopback on Linux?

-V