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author | Ulrich Drepper <drepper@redhat.com> | 1998-11-18 11:05:09 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1998-11-18 11:05:09 +0000 |
commit | 090ca0002ff8ee4ca425bc6088cc097f46c67626 (patch) | |
tree | 6d74050e9ba355a9d91de5251c9f854f8fce4098 /sunrpc/svc_tcp.c | |
parent | 45a9a50e68f58102e86b949527fd0c2bc0abf4ce (diff) | |
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Update.
1998-11-18 Ulrich Drepper <drepper@cygnus.com>
* io/Makefile (CFLAGS-ftw.c): Removed.
1998-11-18 Andreas Schwab <schwab@issan.cs.uni-dortmund.de>
* io/Makefile (tests): Make sure that the test program has an
explicit directory part.
1998-11-18 Andreas Schwab <schwab@issan.cs.uni-dortmund.de>
* configure.in: Fix last change.
1998-11-18 Thorsten Kukuk <kukuk@vt.uni-paderborn.de>
* sunrpc/Makefile (routines): Add create_xid.
* sunrpc/clnt_tcp.c: Use non-guessable xid.
* sunrpc/clnt_udp.c: Likewise.
* sunrpc/clnt_unix.c: Likewise.
* sunrpc/pmap_rmt.c: Likewise.
* sunrpc/create_xid.c: New, create non-guessable xid.
* sunrpc/svc_tcp.c: Remove patch from 1998-06-15, use poll instead
of select.
* sunrpc/svc_unix.c: Use poll instead of select.
Diffstat (limited to 'sunrpc/svc_tcp.c')
-rw-r--r-- | sunrpc/svc_tcp.c | 105 |
1 files changed, 34 insertions, 71 deletions
diff --git a/sunrpc/svc_tcp.c b/sunrpc/svc_tcp.c index 0c2ce9650a..cd5cecf0f7 100644 --- a/sunrpc/svc_tcp.c +++ b/sunrpc/svc_tcp.c @@ -46,6 +46,7 @@ static char sccsid[] = "@(#)svc_tcp.c 1.21 87/08/11 Copyr 1984 Sun Micro"; #include <string.h> #include <rpc/rpc.h> #include <sys/socket.h> +#include <sys/poll.h> #include <errno.h> #include <stdlib.h> @@ -284,66 +285,42 @@ svctcp_destroy (SVCXPRT *xprt) mem_free ((caddr_t) xprt, sizeof (SVCXPRT)); } -/* - * All read operations timeout after 35 seconds. - * A timeout is fatal for the connection. - */ -static struct timeval wait_per_try = {35, 0}; /* * reads data from the tcp connection. * any error is fatal and the connection is closed. * (And a read of zero bytes is a half closed stream => error.) - * - * Note: we have to be careful here not to allow ourselves to become - * blocked too long in this routine. While we're waiting for data from one - * client, another client may be trying to connect. To avoid this situation, - * some code from svc_run() is transplanted here: the select() loop checks - * all RPC descriptors including the one we want and calls svc_getreqset2() - * to handle new requests if any are detected. */ static int readtcp (char *xprtptr, char *buf, int len) { SVCXPRT *xprt = (SVCXPRT *)xprtptr; int sock = xprt->xp_sock; -#ifdef FD_SETSIZE - fd_set readfds; -#else - int mask = 1 << sock; - int readfds; -#endif /* def FD_SETSIZE */ - while (1) + int milliseconds = 35 * 1000; + struct pollfd pollfd; + + do { - struct timeval timeout = wait_per_try; - readfds = svc_fdset; -#ifdef FD_SETSIZE - FD_SET (sock, &readfds); -#else - readfds |= (1 << sock); -#endif /* def FD_SETSIZE */ - if (__select (_rpc_dtablesize (), &readfds, (fd_set *) NULL, - (fd_set *) NULL, &timeout) <= 0) + pollfd.fd = sock; + pollfd.events = POLLIN; + switch (__poll (&pollfd, 1, milliseconds)) { + case -1: if (errno == EINTR) continue; + /*FALLTHROUGH*/ + case 0: goto fatal_err; - } - -#ifdef FD_SETSIZE - if (FD_ISSET (sock, &readfds)) -#else - if (readfds == mask) -#endif /* def FD_SETSIZE */ - break; - - svc_getreqset (&readfds); + default: + break; + } } + while ((pollfd.revents & POLLIN) == 0); if ((len = __read (sock, buf, len)) > 0) return len; -fatal_err: + fatal_err: ((struct tcp_conn *) (xprt->xp_p1))->strm_stat = XPRT_DIED; return -1; } @@ -362,12 +339,11 @@ writetcp (char *xprtptr, char * buf, int len) { if ((i = __write (xprt->xp_sock, buf, cnt)) < 0) { - ((struct tcp_conn *) (xprt->xp_p1))->strm_stat = - XPRT_DIED; - return (-1); + ((struct tcp_conn *) (xprt->xp_p1))->strm_stat = XPRT_DIED; + return -1; } } - return (len); + return len; } static enum xprt_stat @@ -377,19 +353,16 @@ svctcp_stat (SVCXPRT *xprt) (struct tcp_conn *) (xprt->xp_p1); if (cd->strm_stat == XPRT_DIED) - return (XPRT_DIED); + return XPRT_DIED; if (!xdrrec_eof (&(cd->xdrs))) - return (XPRT_MOREREQS); - return (XPRT_IDLE); + return XPRT_MOREREQS; + return XPRT_IDLE; } static bool_t -svctcp_recv (xprt, msg) - SVCXPRT *xprt; - struct rpc_msg *msg; +svctcp_recv (SVCXPRT *xprt, struct rpc_msg *msg) { - struct tcp_conn *cd = - (struct tcp_conn *) (xprt->xp_p1); + struct tcp_conn *cd = (struct tcp_conn *) (xprt->xp_p1); XDR *xdrs = &(cd->xdrs); xdrs->x_op = XDR_DECODE; @@ -397,42 +370,32 @@ svctcp_recv (xprt, msg) if (xdr_callmsg (xdrs, msg)) { cd->x_id = msg->rm_xid; - return (TRUE); + return TRUE; } cd->strm_stat = XPRT_DIED; /* XXXX */ - return (FALSE); + return FALSE; } static bool_t -svctcp_getargs (xprt, xdr_args, args_ptr) - SVCXPRT *xprt; - xdrproc_t xdr_args; - caddr_t args_ptr; +svctcp_getargs (SVCXPRT *xprt, xdrproc_t xdr_args, caddr_t args_ptr) { - - return ((*xdr_args) (&(((struct tcp_conn *) (xprt->xp_p1))->xdrs), args_ptr)); + return ((*xdr_args) (&(((struct tcp_conn *) + (xprt->xp_p1))->xdrs), args_ptr)); } static bool_t -svctcp_freeargs (xprt, xdr_args, args_ptr) - SVCXPRT *xprt; - xdrproc_t xdr_args; - caddr_t args_ptr; +svctcp_freeargs (SVCXPRT *xprt, xdrproc_t xdr_args, caddr_t args_ptr) { - XDR *xdrs = - &(((struct tcp_conn *) (xprt->xp_p1))->xdrs); + XDR *xdrs = &(((struct tcp_conn *) (xprt->xp_p1))->xdrs); xdrs->x_op = XDR_FREE; return ((*xdr_args) (xdrs, args_ptr)); } static bool_t -svctcp_reply (xprt, msg) - SVCXPRT *xprt; - struct rpc_msg *msg; +svctcp_reply (SVCXPRT *xprt, struct rpc_msg *msg) { - struct tcp_conn *cd = - (struct tcp_conn *) (xprt->xp_p1); + struct tcp_conn *cd = (struct tcp_conn *) (xprt->xp_p1); XDR *xdrs = &(cd->xdrs); bool_t stat; @@ -440,5 +403,5 @@ svctcp_reply (xprt, msg) msg->rm_xid = cd->x_id; stat = xdr_replymsg (xdrs, msg); (void) xdrrec_endofrecord (xdrs, TRUE); - return (stat); + return stat; } |