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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rpcsec_gss
auth_none.c
auth_unix.c
auth.h
authunix_prot.c	Place hostnames and similar information fully under the prison system.	2009-05-29 21:27:12 +00:00
clnt_dg.c	Rework socket upcalls to close some races with setup/teardown of upcalls.	2009-06-01 21:17:03 +00:00
clnt_rc.c
clnt_stat.h
clnt_vc.c	Rework socket upcalls to close some races with setup/teardown of upcalls.	2009-06-01 21:17:03 +00:00
clnt.h
getnetconfig.c
inet_ntop.c
inet_pton.c
netconfig.h
nettype.h
pmap_prot.h
replay.c
replay.h
rpc_callmsg.c
rpc_com.h
rpc_generic.c
rpc_msg.h
rpc_prot.c
rpc.h
rpcb_clnt.c
rpcb_clnt.h
rpcb_prot.c
rpcb_prot.h
rpcm_subs.h
rpcsec_gss.h
svc_auth_unix.c
svc_auth.c
svc_auth.h
svc_dg.c	Rework socket upcalls to close some races with setup/teardown of upcalls.	2009-06-01 21:17:03 +00:00
svc_generic.c
svc_vc.c	Rework socket upcalls to close some races with setup/teardown of upcalls.	2009-06-01 21:17:03 +00:00
svc.c
svc.h
types.h
xdr.h	fix xdrmem_control to be safe in an if statement	2009-05-30 22:23:58 +00:00