[patch] Auto session bus launch from libdbus

[Daniel P. Berrange]

On Sun, Sep 10, 2006 at 11:42:53PM +0200, Thiago Macieira wrote:
> * I have no idea if flock(2) is portable to the other Unix platforms or if 
> it's enough to guarantee exclusive access on NFS mounts. Someone with 
> better knowledge, please come forward.

flock() is bad because it does not work on NFS. fcntl() with the F_SETLK
is portable & works across all filesystems, although the set of fields in
the 'struct flock' parameter does change across OS. You can also use the
POSIX call lockf() which on Linux is a thin wrapper to fcntl().

Regards,
Dan.
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