Re-backport all the rpc stuff from glibc 2.2.5. This allows us to make this

junk (and I do mean that ;-) thread safe without undue pain.  Adds 12k worth to
the code size I'm afraid, but since I never use NFS and therefore never include
this stuff, I guess thats acceptable.  I still need to enable the multi-threaded
bits...
 -Erik

1 files changed, 373 insertions, 357 deletions

diff --git a/libc/inet/rpc/svc.c b/libc/inet/rpc/svc.c
index 89f10a696..92084bcc1 100644
--- a/libc/inet/rpc/svc.c
+++ b/libc/inet/rpc/svc.c
@@ -1,4 +1,3 @@
-/* @(#)svc.c	2.4 88/08/11 4.0 RPCSRC; from 1.44 88/02/08 SMI */
 /*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  * unrestricted use provided that this legend is included on all tape
@@ -6,30 +5,27 @@
  * may copy or modify Sun RPC without charge, but are not authorized
  * to license or distribute it to anyone else except as part of a product or
  * program developed by the user.
- * 
+ *
  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
- * 
+ *
  * Sun RPC is provided with no support and without any obligation on the
  * part of Sun Microsystems, Inc. to assist in its use, correction,
  * modification or enhancement.
- * 
+ *
  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  * OR ANY PART THEREOF.
- * 
+ *
  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  * or profits or other special, indirect and consequential damages, even if
  * Sun has been advised of the possibility of such damages.
- * 
+ *
  * Sun Microsystems, Inc.
  * 2550 Garcia Avenue
  * Mountain View, California  94043
  */
-#define __FORCE_GLIBC
-#include <features.h>
-
 /*
  * svc.c, Server-side remote procedure call interface.
  *
@@ -40,299 +36,288 @@
  * Copyright (C) 1984, Sun Microsystems, Inc.
  */
 
-#define __USE_XOPEN
-#include <sys/errno.h>
+#define __FORCE_GLIBC
+#define _GNU_SOURCE
+#include <features.h>
+
+#include <errno.h>
+#include <unistd.h>
 #include <rpc/rpc.h>
+#include <rpc/svc.h>
 #include <rpc/pmap_clnt.h>
-#ifdef __linux__
-#include <sys/types.h>
-#include <sys/select.h>
-#endif
+#include <sys/poll.h>
 
-extern int errno;
-
-#ifdef FD_SETSIZE
-static SVCXPRT **xports;
+#ifdef _RPC_THREAD_SAFE_
+#define xports ((SVCXPRT **)RPC_THREAD_VARIABLE(svc_xports_s))
 #else
-#define NOFILE 32
-
-static SVCXPRT *xports[NOFILE];
-#endif							/* def FD_SETSIZE */
+static SVCXPRT **xports;
+#endif
 
 #define NULL_SVC ((struct svc_callout *)0)
-#define	RQCRED_SIZE	400			/* this size is excessive */
-
-/*
- * The services list
- * Each entry represents a set of procedures (an rpc program).
- * The dispatch routine takes request structs and runs the
- * apropriate procedure.
- */
-static struct svc_callout {
-	struct svc_callout *sc_next;
-	u_long sc_prog;
-	u_long sc_vers;
-	void (*sc_dispatch) ();
-} *svc_head;
-
-static struct svc_callout *svc_find();
+#define	RQCRED_SIZE	400	/* this size is excessive */
+
+/* The services list
+   Each entry represents a set of procedures (an rpc program).
+   The dispatch routine takes request structs and runs the
+   appropriate procedure. */
+struct svc_callout {
+  struct svc_callout *sc_next;
+  rpcprog_t sc_prog;
+  rpcvers_t sc_vers;
+  void (*sc_dispatch) (struct svc_req *, SVCXPRT *);
+};
+#ifdef _RPC_THREAD_SAFE_
+#define svc_head ((struct svc_callout *)RPC_THREAD_VARIABLE(svc_head_s))
+#else
+static struct svc_callout *svc_head;
+#endif
 
 /* ***************  SVCXPRT related stuff **************** */
 
-/*
- * Activate a transport handle.
- */
-void xprt_register(xprt)
-SVCXPRT *xprt;
+/* Activate a transport handle. */
+void
+xprt_register (SVCXPRT *xprt)
 {
-	register int sock = xprt->xp_sock;
-
-#ifdef FD_SETSIZE
-	if (xports == NULL) {
-		xports = (SVCXPRT **)
-			mem_alloc(FD_SETSIZE * sizeof(SVCXPRT *));
-	}
-	if (sock < _rpc_dtablesize()) {
-		xports[sock] = xprt;
-		FD_SET(sock, &svc_fdset);
-	}
-#else
-	if (sock < NOFILE) {
-		xports[sock] = xprt;
-		svc_fds |= (1 << sock);
-	}
-#endif							/* def FD_SETSIZE */
-
+  register int sock = xprt->xp_sock;
+  register int i;
+
+  if (xports == NULL)
+    {
+      xports = (SVCXPRT **) malloc (_rpc_dtablesize () * sizeof (SVCXPRT *));
+      if (xports == NULL) /* Donīt add handle */
+	return;
+    }
+
+  if (sock < _rpc_dtablesize ())
+    {
+      xports[sock] = xprt;
+      if (sock < FD_SETSIZE)
+	FD_SET (sock, &svc_fdset);
+
+      /* Check if we have an empty slot */
+      for (i = 0; i < svc_max_pollfd; ++i)
+	if (svc_pollfd[i].fd == -1)
+	  {
+	    svc_pollfd[i].fd = sock;
+	    svc_pollfd[i].events = (POLLIN | POLLPRI |
+				    POLLRDNORM | POLLRDBAND);
+	    return;
+	  }
+
+      ++svc_max_pollfd;
+      svc_pollfd = realloc (svc_pollfd,
+			    sizeof (struct pollfd) * svc_max_pollfd);
+      if (svc_pollfd == NULL) /* Out of memory */
+	return;
+
+      svc_pollfd[svc_max_pollfd - 1].fd = sock;
+      svc_pollfd[svc_max_pollfd - 1].events = (POLLIN | POLLPRI |
+					       POLLRDNORM | POLLRDBAND);
+    }
 }
 
-/*
- * De-activate a transport handle. 
- */
-void xprt_unregister(xprt)
-SVCXPRT *xprt;
+/* De-activate a transport handle. */
+void
+xprt_unregister (SVCXPRT *xprt)
 {
-	register int sock = xprt->xp_sock;
+  register int sock = xprt->xp_sock;
+  register int i;
 
-#ifdef FD_SETSIZE
-	if ((sock < _rpc_dtablesize()) && (xports[sock] == xprt)) {
-		xports[sock] = (SVCXPRT *) 0;
-		FD_CLR(sock, &svc_fdset);
-	}
-#else
-	if ((sock < NOFILE) && (xports[sock] == xprt)) {
-		xports[sock] = (SVCXPRT *) 0;
-		svc_fds &= ~(1 << sock);
-	}
-#endif							/* def FD_SETSIZE */
+  if ((sock < _rpc_dtablesize ()) && (xports[sock] == xprt))
+    {
+      xports[sock] = (SVCXPRT *) 0;
+
+      if (sock < FD_SETSIZE)
+	FD_CLR (sock, &svc_fdset);
+
+      for (i = 0; i < svc_max_pollfd; ++i)
+	if (svc_pollfd[i].fd == sock)
+	  svc_pollfd[i].fd = -1;
+    }
 }
 
 
 /* ********************** CALLOUT list related stuff ************* */
 
-/*
- * Add a service program to the callout list.
- * The dispatch routine will be called when a rpc request for this
- * program number comes in.
- */
-bool_t svc_register (SVCXPRT *xprt, u_long prog, 
-	u_long vers, __dispatch_fn_t dispatch, u_long protocol)
+/* Search the callout list for a program number, return the callout
+   struct. */
+static struct svc_callout *
+svc_find (rpcprog_t prog, rpcvers_t vers, struct svc_callout **prev)
 {
-	struct svc_callout *prev;
-	register struct svc_callout *s;
-
-	if ((s = svc_find(prog, vers, &prev)) != NULL_SVC) {
-		if (s->sc_dispatch == dispatch)
-			goto pmap_it;		/* he is registering another xptr */
-		return (FALSE);
-	}
-	s = (struct svc_callout *) mem_alloc(sizeof(struct svc_callout));
-
-	if (s == (struct svc_callout *) 0) {
-		return (FALSE);
-	}
-	s->sc_prog = prog;
-	s->sc_vers = vers;
-	s->sc_dispatch = dispatch;
-	s->sc_next = svc_head;
-	svc_head = s;
-  pmap_it:
-	/* now register the information with the local binder service */
-	if (protocol) {
-		return (pmap_set(prog, vers, protocol, xprt->xp_port));
-	}
-	return (TRUE);
+  register struct svc_callout *s, *p;
+
+  p = NULL_SVC;
+  for (s = svc_head; s != NULL_SVC; s = s->sc_next)
+    {
+      if ((s->sc_prog == prog) && (s->sc_vers == vers))
+	goto done;
+      p = s;
+    }
+done:
+  *prev = p;
+  return s;
 }
 
-/*
- * Remove a service program from the callout list.
- */
-void svc_unregister(prog, vers)
-u_long prog;
-u_long vers;
+/* Add a service program to the callout list.
+   The dispatch routine will be called when a rpc request for this
+   program number comes in. */
+bool_t
+svc_register (SVCXPRT * xprt, rpcprog_t prog, rpcvers_t vers,
+	      void (*dispatch) (struct svc_req *, SVCXPRT *),
+	      rpcproc_t protocol)
 {
-	struct svc_callout *prev;
-	register struct svc_callout *s;
-
-	if ((s = svc_find(prog, vers, &prev)) == NULL_SVC)
-		return;
-	if (prev == NULL_SVC) {
-		svc_head = s->sc_next;
-	} else {
-		prev->sc_next = s->sc_next;
-	}
-	s->sc_next = NULL_SVC;
-	mem_free((char *) s, (u_int) sizeof(struct svc_callout));
-
-	/* now unregister the information with the local binder service */
-	(void) pmap_unset(prog, vers);
+  struct svc_callout *prev;
+  register struct svc_callout *s;
+
+  if ((s = svc_find (prog, vers, &prev)) != NULL_SVC)
+    {
+      if (s->sc_dispatch == dispatch)
+	goto pmap_it;		/* he is registering another xptr */
+      return FALSE;
+    }
+  s = (struct svc_callout *) mem_alloc (sizeof (struct svc_callout));
+  if (s == (struct svc_callout *) 0)
+    return FALSE;
+
+  s->sc_prog = prog;
+  s->sc_vers = vers;
+  s->sc_dispatch = dispatch;
+  s->sc_next = svc_head;
+  svc_head = s;
+
+pmap_it:
+  /* now register the information with the local binder service */
+  if (protocol)
+    return pmap_set (prog, vers, protocol, xprt->xp_port);
+
+  return TRUE;
 }
 
-/*
- * Search the callout list for a program number, return the callout
- * struct.
- */
-static struct svc_callout *svc_find(prog, vers, prev)
-u_long prog;
-u_long vers;
-struct svc_callout **prev;
+/* Remove a service program from the callout list. */
+void
+svc_unregister (rpcprog_t prog, rpcvers_t vers)
 {
-	register struct svc_callout *s, *p;
+  struct svc_callout *prev;
+  register struct svc_callout *s;
 
-	p = NULL_SVC;
-	for (s = svc_head; s != NULL_SVC; s = s->sc_next) {
-		if ((s->sc_prog == prog) && (s->sc_vers == vers))
-			goto done;
-		p = s;
-	}
-  done:
-	*prev = p;
-	return (s);
+  if ((s = svc_find (prog, vers, &prev)) == NULL_SVC)
+    return;
+
+  if (prev == NULL_SVC)
+    svc_head = s->sc_next;
+  else
+    prev->sc_next = s->sc_next;
+
+  s->sc_next = NULL_SVC;
+  mem_free ((char *) s, (u_int) sizeof (struct svc_callout));
+  /* now unregister the information with the local binder service */
+  pmap_unset (prog, vers);
 }
 
 /* ******************* REPLY GENERATION ROUTINES  ************ */
 
-/*
- * Send a reply to an rpc request
- */
-bool_t svc_sendreply(xprt, xdr_results, xdr_location)
-register SVCXPRT *xprt;
-xdrproc_t xdr_results;
-caddr_t xdr_location;
+/* Send a reply to an rpc request */
+bool_t
+svc_sendreply (register SVCXPRT *xprt, xdrproc_t xdr_results,
+	       caddr_t xdr_location)
 {
-	struct rpc_msg rply;
-
-	rply.rm_direction = REPLY;
-	rply.rm_reply.rp_stat = MSG_ACCEPTED;
-	rply.acpted_rply.ar_verf = xprt->xp_verf;
-	rply.acpted_rply.ar_stat = SUCCESS;
-	rply.acpted_rply.ar_results.where = xdr_location;
-	rply.acpted_rply.ar_results.proc = xdr_results;
-	return (SVC_REPLY(xprt, &rply));
+  struct rpc_msg rply;
+
+  rply.rm_direction = REPLY;
+  rply.rm_reply.rp_stat = MSG_ACCEPTED;
+  rply.acpted_rply.ar_verf = xprt->xp_verf;
+  rply.acpted_rply.ar_stat = SUCCESS;
+  rply.acpted_rply.ar_results.where = xdr_location;
+  rply.acpted_rply.ar_results.proc = xdr_results;
+  return SVC_REPLY (xprt, &rply);
 }
 
-/*
- * No procedure error reply
- */
-void svcerr_noproc(xprt)
-register SVCXPRT *xprt;
+/* No procedure error reply */
+void
+svcerr_noproc (register SVCXPRT *xprt)
 {
-	struct rpc_msg rply;
+  struct rpc_msg rply;
 
-	rply.rm_direction = REPLY;
-	rply.rm_reply.rp_stat = MSG_ACCEPTED;
-	rply.acpted_rply.ar_verf = xprt->xp_verf;
-	rply.acpted_rply.ar_stat = PROC_UNAVAIL;
-	SVC_REPLY(xprt, &rply);
+  rply.rm_direction = REPLY;
+  rply.rm_reply.rp_stat = MSG_ACCEPTED;
+  rply.acpted_rply.ar_verf = xprt->xp_verf;
+  rply.acpted_rply.ar_stat = PROC_UNAVAIL;
+  SVC_REPLY (xprt, &rply);
 }
 
-/*
- * Can't decode args error reply
- */
-void svcerr_decode(xprt)
-register SVCXPRT *xprt;
+/* Can't decode args error reply */
+void
+svcerr_decode (register SVCXPRT *xprt)
 {
-	struct rpc_msg rply;
+  struct rpc_msg rply;
 
-	rply.rm_direction = REPLY;
-	rply.rm_reply.rp_stat = MSG_ACCEPTED;
-	rply.acpted_rply.ar_verf = xprt->xp_verf;
-	rply.acpted_rply.ar_stat = GARBAGE_ARGS;
-	SVC_REPLY(xprt, &rply);
+  rply.rm_direction = REPLY;
+  rply.rm_reply.rp_stat = MSG_ACCEPTED;
+  rply.acpted_rply.ar_verf = xprt->xp_verf;
+  rply.acpted_rply.ar_stat = GARBAGE_ARGS;
+  SVC_REPLY (xprt, &rply);
 }
 
-/*
- * Some system error
- */
-void svcerr_systemerr(xprt)
-register SVCXPRT *xprt;
+/* Some system error */
+void
+svcerr_systemerr (register SVCXPRT *xprt)
 {
-	struct rpc_msg rply;
+  struct rpc_msg rply;
 
-	rply.rm_direction = REPLY;
-	rply.rm_reply.rp_stat = MSG_ACCEPTED;
-	rply.acpted_rply.ar_verf = xprt->xp_verf;
-	rply.acpted_rply.ar_stat = SYSTEM_ERR;
-	SVC_REPLY(xprt, &rply);
+  rply.rm_direction = REPLY;
+  rply.rm_reply.rp_stat = MSG_ACCEPTED;
+  rply.acpted_rply.ar_verf = xprt->xp_verf;
+  rply.acpted_rply.ar_stat = SYSTEM_ERR;
+  SVC_REPLY (xprt, &rply);
 }
 
-/*
- * Authentication error reply
- */
-void svcerr_auth(xprt, why)
-SVCXPRT *xprt;
-enum auth_stat why;
+/* Authentication error reply */
+void
+svcerr_auth (SVCXPRT *xprt, enum auth_stat why)
 {
-	struct rpc_msg rply;
+  struct rpc_msg rply;
 
-	rply.rm_direction = REPLY;
-	rply.rm_reply.rp_stat = MSG_DENIED;
-	rply.rjcted_rply.rj_stat = AUTH_ERROR;
-	rply.rjcted_rply.rj_why = why;
-	SVC_REPLY(xprt, &rply);
+  rply.rm_direction = REPLY;
+  rply.rm_reply.rp_stat = MSG_DENIED;
+  rply.rjcted_rply.rj_stat = AUTH_ERROR;
+  rply.rjcted_rply.rj_why = why;
+  SVC_REPLY (xprt, &rply);
 }
 
-/*
- * Auth too weak error reply
- */
-void svcerr_weakauth(xprt)
-SVCXPRT *xprt;
+/* Auth too weak error reply */
+void
+svcerr_weakauth (SVCXPRT *xprt)
 {
-
-	svcerr_auth(xprt, AUTH_TOOWEAK);
+  svcerr_auth (xprt, AUTH_TOOWEAK);
 }
 
-/*
- * Program unavailable error reply
- */
-void svcerr_noprog(xprt)
-register SVCXPRT *xprt;
+/* Program unavailable error reply */
+void
+svcerr_noprog (register SVCXPRT *xprt)
 {
-	struct rpc_msg rply;
+  struct rpc_msg rply;
 
-	rply.rm_direction = REPLY;
-	rply.rm_reply.rp_stat = MSG_ACCEPTED;
-	rply.acpted_rply.ar_verf = xprt->xp_verf;
-	rply.acpted_rply.ar_stat = PROG_UNAVAIL;
-	SVC_REPLY(xprt, &rply);
+  rply.rm_direction = REPLY;
+  rply.rm_reply.rp_stat = MSG_ACCEPTED;
+  rply.acpted_rply.ar_verf = xprt->xp_verf;
+  rply.acpted_rply.ar_stat = PROG_UNAVAIL;
+  SVC_REPLY (xprt, &rply);
 }
 
-/*
- * Program version mismatch error reply
- */
-void svcerr_progvers(xprt, low_vers, high_vers)
-register SVCXPRT *xprt;
-u_long low_vers;
-u_long high_vers;
+/* Program version mismatch error reply */
+void
+svcerr_progvers (register SVCXPRT *xprt, rpcvers_t low_vers,
+		 rpcvers_t high_vers)
 {
-	struct rpc_msg rply;
-
-	rply.rm_direction = REPLY;
-	rply.rm_reply.rp_stat = MSG_ACCEPTED;
-	rply.acpted_rply.ar_verf = xprt->xp_verf;
-	rply.acpted_rply.ar_stat = PROG_MISMATCH;
-	rply.acpted_rply.ar_vers.low = low_vers;
-	rply.acpted_rply.ar_vers.high = high_vers;
-	SVC_REPLY(xprt, &rply);
+  struct rpc_msg rply;
+
+  rply.rm_direction = REPLY;
+  rply.rm_reply.rp_stat = MSG_ACCEPTED;
+  rply.acpted_rply.ar_verf = xprt->xp_verf;
+  rply.acpted_rply.ar_stat = PROG_MISMATCH;
+  rply.acpted_rply.ar_vers.low = low_vers;
+  rply.acpted_rply.ar_vers.high = high_vers;
+  SVC_REPLY (xprt, &rply);
 }
 
 /* ******************* SERVER INPUT STUFF ******************* */
@@ -345,132 +330,163 @@ u_long high_vers;
  * the "raw" parameters (msg.rm_call.cb_cred and msg.rm_call.cb_verf) and
  * the "cooked" credentials (rqst->rq_clntcred).
  * However, this function does not know the structure of the cooked
- * credentials, so it make the following assumptions: 
+ * credentials, so it make the following assumptions:
  *   a) the structure is contiguous (no pointers), and
- *   b) the cred structure size does not exceed RQCRED_SIZE bytes. 
+ *   b) the cred structure size does not exceed RQCRED_SIZE bytes.
  * In all events, all three parameters are freed upon exit from this routine.
  * The storage is trivially management on the call stack in user land, but
  * is mallocated in kernel land.
  */
 
-void svc_getreq(rdfds)
-int rdfds;
+void
+svc_getreq (int rdfds)
 {
-#ifdef FD_SETSIZE
-	fd_set readfds;
+  fd_set readfds;
 
-	FD_ZERO(&readfds);
-/*#ifdef __linux__*/
-#if 0
-	readfds = rdfds;
-#else
-	readfds.fds_bits[0] = rdfds;
-#endif
-	svc_getreqset(&readfds);
-#else
-	int readfds = rdfds & svc_fds;
+  FD_ZERO (&readfds);
+  readfds.fds_bits[0] = rdfds;
+  svc_getreqset (&readfds);
+}
 
-	svc_getreqset(&readfds);
-#endif							/* def FD_SETSIZE */
+void
+svc_getreqset (fd_set *readfds)
+{
+  register u_int32_t mask;
+  register u_int32_t *maskp;
+  register int setsize;
+  register int sock;
+  register int bit;
+
+  setsize = _rpc_dtablesize ();
+  maskp = (u_int32_t *) readfds->fds_bits;
+  for (sock = 0; sock < setsize; sock += 32)
+    for (mask = *maskp++; (bit = ffs (mask)); mask ^= (1 << (bit - 1)))
+      svc_getreq_common (sock + bit - 1);
 }
 
-void svc_getreqset(readfds)
-#ifdef FD_SETSIZE
-fd_set *readfds;
+void
+svc_getreq_poll (struct pollfd *pfdp, int pollretval)
 {
-#else
-int *readfds;
+  register int i;
+  register int fds_found;
+
+  for (i = fds_found = 0; i < svc_max_pollfd && fds_found < pollretval; ++i)
+    {
+      register struct pollfd *p = &pfdp[i];
+
+      if (p->fd != -1 && p->revents)
+	{
+	  /* fd has input waiting */
+	  ++fds_found;
+
+	  if (p->revents & POLLNVAL)
+	    xprt_unregister (xports[p->fd]);
+	  else
+	    svc_getreq_common (p->fd);
+	}
+    }
+}
+
+
+void
+svc_getreq_common (const int fd)
 {
-	int readfds_local = *readfds;
-#endif							/* def FD_SETSIZE */
-	enum xprt_stat stat;
-	struct rpc_msg msg;
-	int prog_found;
-	u_long low_vers;
-	u_long high_vers;
-	struct svc_req r;
-	register SVCXPRT *xprt;
-	register u_long mask;
-	register int bit;
-	register u_long *maskp;
-	register int setsize;
-	register int sock;
-	char cred_area[2 * MAX_AUTH_BYTES + RQCRED_SIZE];
-
-	msg.rm_call.cb_cred.oa_base = cred_area;
-	msg.rm_call.cb_verf.oa_base = &(cred_area[MAX_AUTH_BYTES]);
-	r.rq_clntcred = &(cred_area[2 * MAX_AUTH_BYTES]);
-
-
-#ifdef FD_SETSIZE
-	setsize = _rpc_dtablesize();
-#ifdef __linux__
-/*#define NFDBITS	32*/
-	maskp = (u_long *) readfds;
-#else
-	maskp = (u_long *) readfds->fds_bits;
-#endif
-	for (sock = 0; sock < setsize; sock += NFDBITS) {
-		for (mask = *maskp++; (bit = ffs(mask)); mask ^= (1 << (bit - 1))) {
-			/* sock has input waiting */
-			xprt = xports[sock + bit - 1];
-#else
-	for (sock = 0; readfds_local != 0; sock++, readfds_local >>= 1) {
-		if ((readfds_local & 1) != 0) {
-			/* sock has input waiting */
-			xprt = xports[sock];
-#endif							/* def FD_SETSIZE */
-			/* now receive msgs from xprtprt (support batch calls) */
-			do {
-				if (SVC_RECV(xprt, &msg)) {
-
-					/* now find the exported program and call it */
-					register struct svc_callout *s;
-					enum auth_stat why;
-
-					r.rq_xprt = xprt;
-					r.rq_prog = msg.rm_call.cb_prog;
-					r.rq_vers = msg.rm_call.cb_vers;
-					r.rq_proc = msg.rm_call.cb_proc;
-					r.rq_cred = msg.rm_call.cb_cred;
-					/* first authenticate the message */
-					if ((why = _authenticate(&r, &msg)) != AUTH_OK) {
-						svcerr_auth(xprt, why);
-						goto call_done;
-					}
-					/* now match message with a registered service */
-					prog_found = FALSE;
-					low_vers = 0 - 1;
-					high_vers = 0;
-					for (s = svc_head; s != NULL_SVC; s = s->sc_next) {
-						if (s->sc_prog == r.rq_prog) {
-							if (s->sc_vers == r.rq_vers) {
-								(*s->sc_dispatch) (&r, xprt);
-								goto call_done;
-							}	/* found correct version */
-							prog_found = TRUE;
-							if (s->sc_vers < low_vers)
-								low_vers = s->sc_vers;
-							if (s->sc_vers > high_vers)
-								high_vers = s->sc_vers;
-						}		/* found correct program */
-					}
-					/*
-					 * if we got here, the program or version
-					 * is not served ...
-					 */
-					if (prog_found)
-						svcerr_progvers(xprt, low_vers, high_vers);
-					else
-						svcerr_noprog(xprt);
-					/* Fall through to ... */
-				}
-			  call_done:
-				if ((stat = SVC_STAT(xprt)) == XPRT_DIED) {
-					SVC_DESTROY(xprt);
-					break;
-				}
-			} while (stat == XPRT_MOREREQS);
+  enum xprt_stat stat;
+  struct rpc_msg msg;
+  register SVCXPRT *xprt;
+  char cred_area[2 * MAX_AUTH_BYTES + RQCRED_SIZE];
+  msg.rm_call.cb_cred.oa_base = cred_area;
+  msg.rm_call.cb_verf.oa_base = &(cred_area[MAX_AUTH_BYTES]);
+
+  xprt = xports[fd];
+  /* Do we control fd? */
+  if (xprt == NULL)
+     return;
+
+  /* now receive msgs from xprtprt (support batch calls) */
+  do
+    {
+      if (SVC_RECV (xprt, &msg))
+	{
+	  /* now find the exported program and call it */
+	  struct svc_callout *s;
+	  struct svc_req r;
+	  enum auth_stat why;
+	  rpcvers_t low_vers;
+	  rpcvers_t high_vers;
+	  int prog_found;
+
+	  r.rq_clntcred = &(cred_area[2 * MAX_AUTH_BYTES]);
+	  r.rq_xprt = xprt;
+	  r.rq_prog = msg.rm_call.cb_prog;
+	  r.rq_vers = msg.rm_call.cb_vers;
+	  r.rq_proc = msg.rm_call.cb_proc;
+	  r.rq_cred = msg.rm_call.cb_cred;
+
+	  /* first authenticate the message */
+	  /* Check for null flavor and bypass these calls if possible */
+
+	  if (msg.rm_call.cb_cred.oa_flavor == AUTH_NULL)
+	    {
+	      r.rq_xprt->xp_verf.oa_flavor = _null_auth.oa_flavor;
+	      r.rq_xprt->xp_verf.oa_length = 0;
+	    }
+	  else if ((why = _authenticate (&r, &msg)) != AUTH_OK)
+	    {
+	      svcerr_auth (xprt, why);
+	      goto call_done;
+	    }
+
+	  /* now match message with a registered service */
+	  prog_found = FALSE;
+	  low_vers = 0 - 1;
+	  high_vers = 0;
+
+	  for (s = svc_head; s != NULL_SVC; s = s->sc_next)
+	    {
+	      if (s->sc_prog == r.rq_prog)
+		{
+		  if (s->sc_vers == r.rq_vers)
+		    {
+		      (*s->sc_dispatch) (&r, xprt);
+		      goto call_done;
+		    }
+		  /* found correct version */
+		  prog_found = TRUE;
+		  if (s->sc_vers < low_vers)
+		    low_vers = s->sc_vers;
+		  if (s->sc_vers > high_vers)
+		    high_vers = s->sc_vers;
 		}
+	      /* found correct program */
+	    }
+	  /* if we got here, the program or version
+	     is not served ... */
+	  if (prog_found)
+	    svcerr_progvers (xprt, low_vers, high_vers);
+	  else
+	    svcerr_noprog (xprt);
+	  /* Fall through to ... */
+	}
+    call_done:
+      if ((stat = SVC_STAT (xprt)) == XPRT_DIED)
+	{
+	  SVC_DESTROY (xprt);
+	  break;
 	}
+    }
+  while (stat == XPRT_MOREREQS);
 }
+
+#ifdef _RPC_THREAD_SAFE_
+
+void
+__rpc_thread_svc_cleanup (void)
+{
+  struct svc_callout *svcp;
+
+  while ((svcp = svc_head) != NULL)
+    svc_unregister (svcp->sc_prog, svcp->sc_vers);
+}
+
+#endif /* _RPC_THREAD_SAFE_ */