Changes from 1.1.55 to 1.1.56

These changes are archived on ftp.crynwr.com:pub/kchanges and http://www.crynwr.com/kchanges. I cannot answer questions about Linux -- I merely summarize the kernel patches after reading them. I try to make them useful to everyone, but kernel hackers should take them with a grain of salt and read the patches themselves. The patch file is patch56.gz

• Added support for disk statistics.
• serial.c (rs_start): Removed an incorrect '!' that was preventing transmit interrupts from being re-enabled in rs_start(). Fortunately in most cases it would be re-enabled elsewhere, but this still should be fixed corectly.
• Removed spurious error message in keyboard driver.
• Oops, in ext2 fs driver, no need to check for overwritten dirents *every* time, just whenever the version number changes.
• Oops, in xiafs driver, forgot to return offset of file into block.
• Don't allow the owner of an open file to be changed to just anyone.
• Allow a socket to be woken up asynchronously.
• Add a bunch of new kernel entry points, for socket reg/unregister, and for devices.
• setreuid() was setting the fsuid to the wrong uid.
• accept()ed socket don't end up with an invalid sk->socket and give bogus netstat output.
• FASYNC/SIGIO now works with sockets.
• Fixed the permissions on F_SETOWN for all. Its now as broken/working as other systems. Really we need something like a 32bit generation number on processes.
• ARP allows proxy for whole networks (a la cisco routers)
• TCP sendto() reports ENOTCONN in the right cases
• Removed some surplus uncommented code from tcp.c
• Fixed protocol violation during closedown in tcp.c [Still not got the window < MSS bug fix included]
• Assorted major IPX errors removed
• Small correction to promisc mode error fix
• Asynchronous I/O support.
• Fixed the worst of the load balancer bugs.
• Fix reset on closedown bug.

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