While touching all vptofh/fhtovp functions, get rid of VFS_MAXFIDSIZ,
version the getfh(2) syscall and explicitly pass the size available in
the filehandle from userland.
Discussed on tech-kern, with lots of help from yamt (thanks!).
Instead malloc() some memory and copy the sockaddr returned there.
Fix a bug where after a blocked lock gets granted, the grant message would
be sent to the wrong machine (or possibly to a completely bogus address).
While there, add a NULL check for the return value of another malloc().
fhopen() and flock(). This means that if you kill lockd, all locks will
be relased (but you're supposed to kill statd at the same time, so
remote hosts will know it and re-establish the lock).
Tested against solaris 2.7 and linux 2.2.14 clients.
Shared lock are not handled efficiently, they're serialised in lockd when they
could be granted.
martin