John Baldwin 74fb0ba732 Rework socket upcalls to close some races with setup/teardown of upcalls. ... - Each socket upcall is now invoked with the appropriate socket buffer locked. It is not permissible to call soisconnected() with this lock held; however, so socket upcalls now return an integer value. The two possible values are SU_OK and SU_ISCONNECTED. If an upcall returns SU_ISCONNECTED, then the soisconnected() will be invoked on the socket after the socket buffer lock is dropped. - A new API is provided for setting and clearing socket upcalls. The API consists of soupcall_set() and soupcall_clear(). - To simplify locking, each socket buffer now has a separate upcall. - When a socket upcall returns SU_ISCONNECTED, the upcall is cleared from the receive socket buffer automatically. Note that a SO_SND upcall should never return SU_ISCONNECTED. - All this means that accept filters should now return SU_ISCONNECTED instead of calling soisconnected() directly. They also no longer need to explicitly clear the upcall on the new socket. - The HTTP accept filter still uses soupcall_set() to manage its internal state machine, but other accept filters no longer have any explicit knowlege of socket upcall internals aside from their return value. - The various RPC client upcalls currently drop the socket buffer lock while invoking soreceive() as a temporary band-aid. The plan for the future is to add a new flag to allow soreceive() to be called with the socket buffer locked. - The AIO callback for socket I/O is now also invoked with the socket buffer locked. Previously sowakeup() would drop the socket buffer lock only to call aio_swake() which immediately re-acquired the socket buffer lock for the duration of the function call. Discussed with: rwatson, rmacklem		2009-06-01 21:17:03 +00:00
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netbios.h
smb_conn.c	Catch up internal locking routines in netsmb with lockmgr changes --	2008-11-02 23:15:32 +00:00
smb_conn.h	Catch up internal locking routines in netsmb with lockmgr changes --	2008-11-02 23:15:32 +00:00
smb_crypt.c
smb_dev.c	Implement device cloning for /dev/nsmb, the netsmb control pseudo-device.	2008-11-03 14:23:15 +00:00
smb_dev.h
smb_iod.c	Really, smb_iod_main() is not totally MPSAFE, so just acquire and drop	2008-03-27 01:23:59 +00:00
smb_rq.c	Retire the MALLOC and FREE macros. They are an abomination unto style(9).	2008-10-23 15:53:51 +00:00
smb_rq.h
smb_smb.c	Initialize some variables that GCC4.2 thinks might possibly be used without	2007-06-15 23:49:54 +00:00
smb_subr.c	It seems to be safe to ignore 'file not locked' error	2006-11-05 06:31:08 +00:00
smb_subr.h	Sweep kernel replacing suser(9) calls with priv(9) calls, assigning	2006-11-06 13:42:10 +00:00
smb_tran.h
smb_trantcp.c	Rework socket upcalls to close some races with setup/teardown of upcalls.	2009-06-01 21:17:03 +00:00
smb_trantcp.h
smb_usr.c
smb.h