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, 426 insertions, 349 deletions

diff --git a/libc/inet/rpc/clnt_tcp.c b/libc/inet/rpc/clnt_tcp.c
index 790ec0706..5ff8434b7 100644
--- a/libc/inet/rpc/clnt_tcp.c
+++ b/libc/inet/rpc/clnt_tcp.c
@@ -6,29 +6,30 @@
  * 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>
+#if !defined(lint) && defined(SCCSIDS)
+static char sccsid[] = "@(#)clnt_tcp.c 1.37 87/10/05 Copyr 1984 Sun Micro";
+#endif
 
 /*
  * clnt_tcp.c, Implements a TCP/IP based, client side RPC.
@@ -49,47 +50,57 @@
  * Now go hang yourself.
  */
 
+#define __FORCE_GLIBC
+#include <features.h>
+
+#include <netdb.h>
+#include <errno.h>
 #include <stdio.h>
+#include <unistd.h>
 #include <rpc/rpc.h>
+#include <sys/poll.h>
 #include <sys/socket.h>
-#include <netdb.h>
-#include <errno.h>
 #include <rpc/pmap_clnt.h>
-#include <unistd.h>
+#ifdef USE_IN_LIBIO
+# include <wchar.h>
+#endif
 
-#define MCALL_MSG_SIZE 24
+extern u_long _create_xid (void);
 
-extern int errno;
-
-static int readtcp();
-static int writetcp();
-
-static enum clnt_stat clnttcp_call();
-static void clnttcp_abort();
-static void clnttcp_geterr();
-static bool_t clnttcp_freeres();
-static bool_t clnttcp_control();
-static void clnttcp_destroy();
-
-static struct clnt_ops tcp_ops = {
-	clnttcp_call,
-	clnttcp_abort,
-	clnttcp_geterr,
-	clnttcp_freeres,
-	clnttcp_destroy,
-	clnttcp_control
-};
+#define MCALL_MSG_SIZE 24
 
-struct ct_data {
-	int ct_sock;
-	bool_t ct_closeit;
-	struct timeval ct_wait;
-	bool_t ct_waitset;			/* wait set by clnt_control? */
-	struct sockaddr_in ct_addr;
-	struct rpc_err ct_error;
-	char ct_mcall[MCALL_MSG_SIZE];	/* marshalled callmsg */
-	u_int ct_mpos;				/* pos after marshal */
-	XDR ct_xdrs;
+struct ct_data
+  {
+    int ct_sock;
+    bool_t ct_closeit;
+    struct timeval ct_wait;
+    bool_t ct_waitset;		/* wait set by clnt_control? */
+    struct sockaddr_in ct_addr;
+    struct rpc_err ct_error;
+    char ct_mcall[MCALL_MSG_SIZE];	/* marshalled callmsg */
+    u_int ct_mpos;		/* pos after marshal */
+    XDR ct_xdrs;
+  };
+
+static int readtcp (char *, char *, int);
+static int writetcp (char *, char *, int);
+
+static enum clnt_stat clnttcp_call (CLIENT *, u_long, xdrproc_t, caddr_t,
+				    xdrproc_t, caddr_t, struct timeval);
+static void clnttcp_abort (void);
+static void clnttcp_geterr (CLIENT *, struct rpc_err *);
+static bool_t clnttcp_freeres (CLIENT *, xdrproc_t, caddr_t);
+static bool_t clnttcp_control (CLIENT *, int, char *);
+static void clnttcp_destroy (CLIENT *);
+
+static struct clnt_ops tcp_ops =
+{
+  clnttcp_call,
+  clnttcp_abort,
+  clnttcp_geterr,
+  clnttcp_freeres,
+  clnttcp_destroy,
+  clnttcp_control
 };
 
 /*
@@ -106,282 +117,355 @@ struct ct_data {
  * NB: The rpch->cl_auth is set null authentication.  Caller may wish to set this
  * something more useful.
  */
-CLIENT *clnttcp_create(raddr, prog, vers, sockp, sendsz, recvsz)
-struct sockaddr_in *raddr;
-u_long prog;
-u_long vers;
-register int *sockp;
-u_int sendsz;
-u_int recvsz;
+CLIENT *
+clnttcp_create (struct sockaddr_in *raddr, u_long prog, u_long vers,
+		int *sockp, u_int sendsz, u_int recvsz)
 {
-	CLIENT *h;
-	register struct ct_data *ct;
-	struct timeval now;
-	struct rpc_msg call_msg;
-
-	ct = NULL;					/* in case of fooy */
-	h = (CLIENT *) mem_alloc(sizeof(*h));
-	if (h == NULL) {
-		(void) fprintf(stderr, "clnttcp_create: out of memory\n");
-		rpc_createerr.cf_stat = RPC_SYSTEMERROR;
-		rpc_createerr.cf_error.re_errno = errno;
-		goto fooy;
+  CLIENT *h;
+  struct ct_data *ct;
+  struct rpc_msg call_msg;
+
+  h = (CLIENT *) mem_alloc (sizeof (*h));
+  ct = (struct ct_data *) mem_alloc (sizeof (*ct));
+  if (h == NULL || ct == NULL)
+    {
+      struct rpc_createerr *ce = &get_rpc_createerr ();
+#ifdef USE_IN_LIBIO
+      if (_IO_fwide (stderr, 0) > 0)
+	(void) __fwprintf (stderr, L"%s",
+			   _("clnttcp_create: out of memory\n"));
+      else
+#endif
+	(void) fputs (_("clnttcp_create: out of memory\n"), stderr);
+      ce->cf_stat = RPC_SYSTEMERROR;
+      ce->cf_error.re_errno = ENOMEM;
+      goto fooy;
+    }
+
+  /*
+   * If no port number given ask the pmap for one
+   */
+  if (raddr->sin_port == 0)
+    {
+      u_short port;
+      if ((port = pmap_getport (raddr, prog, vers, IPPROTO_TCP)) == 0)
+	{
+	  mem_free ((caddr_t) ct, sizeof (struct ct_data));
+	  mem_free ((caddr_t) h, sizeof (CLIENT));
+	  return ((CLIENT *) NULL);
 	}
-	ct = (struct ct_data *) mem_alloc(sizeof(*ct));
-	if (ct == NULL) {
-		(void) fprintf(stderr, "clnttcp_create: out of memory\n");
-		rpc_createerr.cf_stat = RPC_SYSTEMERROR;
-		rpc_createerr.cf_error.re_errno = errno;
-		goto fooy;
+      raddr->sin_port = htons (port);
+    }
+
+  /*
+   * If no socket given, open one
+   */
+  if (*sockp < 0)
+    {
+      *sockp = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
+      (void) bindresvport (*sockp, (struct sockaddr_in *) 0);
+      if ((*sockp < 0)
+	  || (connect (*sockp, (struct sockaddr *) raddr,
+			 sizeof (*raddr)) < 0))
+	{
+	  struct rpc_createerr *ce = &get_rpc_createerr ();
+	  ce->cf_stat = RPC_SYSTEMERROR;
+	  ce->cf_error.re_errno = errno;
+	  if (*sockp >= 0)
+	    (void) close (*sockp);
+	  goto fooy;
 	}
-
-	/*
-	 * If no port number given ask the pmap for one
-	 */
-	if (raddr->sin_port == 0) {
-		u_short port;
-
-		if ((port = pmap_getport(raddr, prog, vers, IPPROTO_TCP)) == 0) {
-			mem_free((caddr_t) ct, sizeof(struct ct_data));
-
-			mem_free((caddr_t) h, sizeof(CLIENT));
-			return ((CLIENT *) NULL);
-		}
-		raddr->sin_port = htons(port);
-	}
-
-	/*
-	 * If no socket given, open one
-	 */
-	if (*sockp < 0) {
-		*sockp = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
-		(void) bindresvport(*sockp, (struct sockaddr_in *) 0);
-		if ((*sockp < 0)
-			|| (connect(*sockp, (struct sockaddr *) raddr,
-						sizeof(*raddr)) < 0)) {
-			rpc_createerr.cf_stat = RPC_SYSTEMERROR;
-			rpc_createerr.cf_error.re_errno = errno;
-			(void) close(*sockp);
-			goto fooy;
-		}
-		ct->ct_closeit = TRUE;
-	} else {
-		ct->ct_closeit = FALSE;
+      ct->ct_closeit = TRUE;
+    }
+  else
+    {
+      ct->ct_closeit = FALSE;
+    }
+
+  /*
+   * Set up private data struct
+   */
+  ct->ct_sock = *sockp;
+  ct->ct_wait.tv_usec = 0;
+  ct->ct_waitset = FALSE;
+  ct->ct_addr = *raddr;
+
+  /*
+   * Initialize call message
+   */
+  call_msg.rm_xid = _create_xid ();
+  call_msg.rm_direction = CALL;
+  call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
+  call_msg.rm_call.cb_prog = prog;
+  call_msg.rm_call.cb_vers = vers;
+
+  /*
+   * pre-serialize the static part of the call msg and stash it away
+   */
+  xdrmem_create (&(ct->ct_xdrs), ct->ct_mcall, MCALL_MSG_SIZE,
+		 XDR_ENCODE);
+  if (!xdr_callhdr (&(ct->ct_xdrs), &call_msg))
+    {
+      if (ct->ct_closeit)
+	{
+	  (void) close (*sockp);
 	}
-
-	/*
-	 * Set up private data struct
-	 */
-	ct->ct_sock = *sockp;
-	ct->ct_wait.tv_usec = 0;
-	ct->ct_waitset = FALSE;
-	ct->ct_addr = *raddr;
-
-	/*
-	 * Initialize call message
-	 */
-	(void) gettimeofday(&now, (struct timezone *) 0);
-	call_msg.rm_xid = getpid() ^ now.tv_sec ^ now.tv_usec;
-	call_msg.rm_direction = CALL;
-	call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
-	call_msg.rm_call.cb_prog = prog;
-	call_msg.rm_call.cb_vers = vers;
-
-	/*
-	 * pre-serialize the staic part of the call msg and stash it away
-	 */
-	xdrmem_create(&(ct->ct_xdrs), ct->ct_mcall, MCALL_MSG_SIZE,
-				  XDR_ENCODE);
-	if (!xdr_callhdr(&(ct->ct_xdrs), &call_msg)) {
-		if (ct->ct_closeit) {
-			(void) close(*sockp);
-		}
-		goto fooy;
-	}
-	ct->ct_mpos = XDR_GETPOS(&(ct->ct_xdrs));
-	XDR_DESTROY(&(ct->ct_xdrs));
-
-	/*
-	 * Create a client handle which uses xdrrec for serialization
-	 * and authnone for authentication.
-	 */
-	xdrrec_create(&(ct->ct_xdrs), sendsz, recvsz,
-				  (caddr_t) ct, readtcp, writetcp);
-	h->cl_ops = &tcp_ops;
-	h->cl_private = (caddr_t) ct;
-	h->cl_auth = authnone_create();
-	return (h);
-
-  fooy:
-	/*
-	 * Something goofed, free stuff and barf
-	 */
-	mem_free((caddr_t) ct, sizeof(struct ct_data));
-
-	mem_free((caddr_t) h, sizeof(CLIENT));
-	return ((CLIENT *) NULL);
+      goto fooy;
+    }
+  ct->ct_mpos = XDR_GETPOS (&(ct->ct_xdrs));
+  XDR_DESTROY (&(ct->ct_xdrs));
+
+  /*
+   * Create a client handle which uses xdrrec for serialization
+   * and authnone for authentication.
+   */
+  xdrrec_create (&(ct->ct_xdrs), sendsz, recvsz,
+		 (caddr_t) ct, readtcp, writetcp);
+  h->cl_ops = &tcp_ops;
+  h->cl_private = (caddr_t) ct;
+  h->cl_auth = authnone_create ();
+  return h;
+
+fooy:
+  /*
+   * Something goofed, free stuff and barf
+   */
+  mem_free ((caddr_t) ct, sizeof (struct ct_data));
+  mem_free ((caddr_t) h, sizeof (CLIENT));
+  return ((CLIENT *) NULL);
 }
 
 static enum clnt_stat
-clnttcp_call(h, proc, xdr_args, args_ptr, xdr_results, results_ptr,
-			 timeout)
-register CLIENT *h;
-u_long proc;
-xdrproc_t xdr_args;
-caddr_t args_ptr;
-xdrproc_t xdr_results;
-caddr_t results_ptr;
-struct timeval timeout;
+clnttcp_call (h, proc, xdr_args, args_ptr, xdr_results, results_ptr, timeout)
+     CLIENT *h;
+     u_long proc;
+     xdrproc_t xdr_args;
+     caddr_t args_ptr;
+     xdrproc_t xdr_results;
+     caddr_t results_ptr;
+     struct timeval timeout;
 {
-	register struct ct_data *ct = (struct ct_data *) h->cl_private;
-	register XDR *xdrs = &(ct->ct_xdrs);
-	struct rpc_msg reply_msg;
-	u_long x_id;
-	u_long *msg_x_id = (u_long *) (ct->ct_mcall);	/* yuk */
-	register bool_t shipnow;
-	int refreshes = 2;
-
-	if (!ct->ct_waitset) {
-		ct->ct_wait = timeout;
+  struct ct_data *ct = (struct ct_data *) h->cl_private;
+  XDR *xdrs = &(ct->ct_xdrs);
+  struct rpc_msg reply_msg;
+  u_long x_id;
+  u_int32_t *msg_x_id = (u_int32_t *) (ct->ct_mcall);	/* yuk */
+  bool_t shipnow;
+  int refreshes = 2;
+
+  if (!ct->ct_waitset)
+    {
+      ct->ct_wait = timeout;
+    }
+
+  shipnow =
+    (xdr_results == (xdrproc_t) 0 && ct->ct_wait.tv_sec == 0
+     && ct->ct_wait.tv_usec == 0) ? FALSE : TRUE;
+
+call_again:
+  xdrs->x_op = XDR_ENCODE;
+  ct->ct_error.re_status = RPC_SUCCESS;
+  x_id = ntohl (--(*msg_x_id));
+  if ((!XDR_PUTBYTES (xdrs, ct->ct_mcall, ct->ct_mpos)) ||
+      (!XDR_PUTLONG (xdrs, (long *) &proc)) ||
+      (!AUTH_MARSHALL (h->cl_auth, xdrs)) ||
+      (!(*xdr_args) (xdrs, args_ptr)))
+    {
+      if (ct->ct_error.re_status == RPC_SUCCESS)
+	ct->ct_error.re_status = RPC_CANTENCODEARGS;
+      (void) xdrrec_endofrecord (xdrs, TRUE);
+      return (ct->ct_error.re_status);
+    }
+  if (!xdrrec_endofrecord (xdrs, shipnow))
+    return ct->ct_error.re_status = RPC_CANTSEND;
+  if (!shipnow)
+    return RPC_SUCCESS;
+  /*
+   * Hack to provide rpc-based message passing
+   */
+  if (ct->ct_wait.tv_sec == 0 && ct->ct_wait.tv_usec == 0)
+    {
+      return ct->ct_error.re_status = RPC_TIMEDOUT;
+    }
+
+
+  /*
+   * Keep receiving until we get a valid transaction id
+   */
+  xdrs->x_op = XDR_DECODE;
+  while (TRUE)
+    {
+      reply_msg.acpted_rply.ar_verf = _null_auth;
+      reply_msg.acpted_rply.ar_results.where = NULL;
+      reply_msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_void;
+      if (!xdrrec_skiprecord (xdrs))
+	return (ct->ct_error.re_status);
+      /* now decode and validate the response header */
+      if (!xdr_replymsg (xdrs, &reply_msg))
+	{
+	  if (ct->ct_error.re_status == RPC_SUCCESS)
+	    continue;
+	  return ct->ct_error.re_status;
 	}
-
-	shipnow =
-		(xdr_results == (xdrproc_t) 0 && timeout.tv_sec == 0
-		 && timeout.tv_usec == 0) ? FALSE : TRUE;
-
-  call_again:
-	xdrs->x_op = XDR_ENCODE;
-	ct->ct_error.re_status = RPC_SUCCESS;
-	x_id = ntohl(--(*msg_x_id));
-	if ((!XDR_PUTBYTES(xdrs, ct->ct_mcall, ct->ct_mpos)) ||
-		(!XDR_PUTLONG(xdrs, (long *) &proc)) ||
-		(!AUTH_MARSHALL(h->cl_auth, xdrs)) ||
-		(!(*xdr_args) (xdrs, args_ptr))) {
-		if (ct->ct_error.re_status == RPC_SUCCESS)
-			ct->ct_error.re_status = RPC_CANTENCODEARGS;
-		(void) xdrrec_endofrecord(xdrs, TRUE);
-		return (ct->ct_error.re_status);
+      if ((u_int32_t) reply_msg.rm_xid == (u_int32_t) x_id)
+	break;
+    }
+
+  /*
+   * process header
+   */
+  _seterr_reply (&reply_msg, &(ct->ct_error));
+  if (ct->ct_error.re_status == RPC_SUCCESS)
+    {
+      if (!AUTH_VALIDATE (h->cl_auth, &reply_msg.acpted_rply.ar_verf))
+	{
+	  ct->ct_error.re_status = RPC_AUTHERROR;
+	  ct->ct_error.re_why = AUTH_INVALIDRESP;
 	}
-	if (!xdrrec_endofrecord(xdrs, shipnow))
-		return (ct->ct_error.re_status = RPC_CANTSEND);
-	if (!shipnow)
-		return (RPC_SUCCESS);
-	/*
-	 * Hack to provide rpc-based message passing
-	 */
-	if (timeout.tv_sec == 0 && timeout.tv_usec == 0) {
-		return (ct->ct_error.re_status = RPC_TIMEDOUT);
+      else if (!(*xdr_results) (xdrs, results_ptr))
+	{
+	  if (ct->ct_error.re_status == RPC_SUCCESS)
+	    ct->ct_error.re_status = RPC_CANTDECODERES;
 	}
-
-
-	/*
-	 * Keep receiving until we get a valid transaction id
-	 */
-	xdrs->x_op = XDR_DECODE;
-	while (TRUE) {
-		reply_msg.acpted_rply.ar_verf = _null_auth;
-		reply_msg.acpted_rply.ar_results.where = NULL;
-		reply_msg.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void;
-		if (!xdrrec_skiprecord(xdrs))
-			return (ct->ct_error.re_status);
-		/* now decode and validate the response header */
-		if (!xdr_replymsg(xdrs, &reply_msg)) {
-			if (ct->ct_error.re_status == RPC_SUCCESS)
-				continue;
-			return (ct->ct_error.re_status);
-		}
-		if (reply_msg.rm_xid == x_id)
-			break;
+      /* free verifier ... */
+      if (reply_msg.acpted_rply.ar_verf.oa_base != NULL)
+	{
+	  xdrs->x_op = XDR_FREE;
+	  (void) xdr_opaque_auth (xdrs, &(reply_msg.acpted_rply.ar_verf));
 	}
-
-	/*
-	 * process header
-	 */
-	_seterr_reply(&reply_msg, &(ct->ct_error));
-	if (ct->ct_error.re_status == RPC_SUCCESS) {
-		if (!AUTH_VALIDATE(h->cl_auth, &reply_msg.acpted_rply.ar_verf)) {
-			ct->ct_error.re_status = RPC_AUTHERROR;
-			ct->ct_error.re_why = AUTH_INVALIDRESP;
-		} else if (!(*xdr_results) (xdrs, results_ptr)) {
-			if (ct->ct_error.re_status == RPC_SUCCESS)
-				ct->ct_error.re_status = RPC_CANTDECODERES;
-		}
-		/* free verifier ... */
-		if (reply_msg.acpted_rply.ar_verf.oa_base != NULL) {
-			xdrs->x_op = XDR_FREE;
-			(void) xdr_opaque_auth(xdrs, &(reply_msg.acpted_rply.ar_verf));
-		}
-	} /* end successful completion */
-	else {
-		/* maybe our credentials need to be refreshed ... */
-		if (refreshes-- && AUTH_REFRESH(h->cl_auth))
-			goto call_again;
-	}							/* end of unsuccessful completion */
-	return (ct->ct_error.re_status);
+    }				/* end successful completion */
+  else
+    {
+      /* maybe our credentials need to be refreshed ... */
+      if (refreshes-- && AUTH_REFRESH (h->cl_auth))
+	goto call_again;
+    }				/* end of unsuccessful completion */
+  return ct->ct_error.re_status;
 }
 
-static void clnttcp_geterr(h, errp)
-CLIENT *h;
-struct rpc_err *errp;
+static void
+clnttcp_geterr (h, errp)
+     CLIENT *h;
+     struct rpc_err *errp;
 {
-	register struct ct_data *ct = (struct ct_data *) h->cl_private;
+  struct ct_data *ct =
+  (struct ct_data *) h->cl_private;
 
-	*errp = ct->ct_error;
+  *errp = ct->ct_error;
 }
 
-static bool_t clnttcp_freeres(cl, xdr_res, res_ptr)
-CLIENT *cl;
-xdrproc_t xdr_res;
-caddr_t res_ptr;
+static bool_t
+clnttcp_freeres (cl, xdr_res, res_ptr)
+     CLIENT *cl;
+     xdrproc_t xdr_res;
+     caddr_t res_ptr;
 {
-	register struct ct_data *ct = (struct ct_data *) cl->cl_private;
-	register XDR *xdrs = &(ct->ct_xdrs);
+  struct ct_data *ct = (struct ct_data *) cl->cl_private;
+  XDR *xdrs = &(ct->ct_xdrs);
 
-	xdrs->x_op = XDR_FREE;
-	return ((*xdr_res) (xdrs, res_ptr));
+  xdrs->x_op = XDR_FREE;
+  return (*xdr_res) (xdrs, res_ptr);
 }
 
-static void clnttcp_abort()
+static void
+clnttcp_abort ()
 {
 }
 
-static bool_t clnttcp_control(cl, request, info)
-CLIENT *cl;
-int request;
-char *info;
+static bool_t
+clnttcp_control (CLIENT *cl, int request, char *info)
 {
-	register struct ct_data *ct = (struct ct_data *) cl->cl_private;
-
-	switch (request) {
-	case CLSET_TIMEOUT:
-		ct->ct_wait = *(struct timeval *) info;
-		ct->ct_waitset = TRUE;
-		break;
-	case CLGET_TIMEOUT:
-		*(struct timeval *) info = ct->ct_wait;
-		break;
-	case CLGET_SERVER_ADDR:
-		*(struct sockaddr_in *) info = ct->ct_addr;
-		break;
-	default:
-		return (FALSE);
-	}
-	return (TRUE);
+  struct ct_data *ct = (struct ct_data *) cl->cl_private;
+
+
+  switch (request)
+    {
+    case CLSET_FD_CLOSE:
+      ct->ct_closeit = TRUE;
+      break;
+    case CLSET_FD_NCLOSE:
+      ct->ct_closeit = FALSE;
+      break;
+    case CLSET_TIMEOUT:
+      ct->ct_wait = *(struct timeval *) info;
+      ct->ct_waitset = TRUE;
+      break;
+    case CLGET_TIMEOUT:
+      *(struct timeval *) info = ct->ct_wait;
+      break;
+    case CLGET_SERVER_ADDR:
+      *(struct sockaddr_in *) info = ct->ct_addr;
+      break;
+    case CLGET_FD:
+      *(int *)info = ct->ct_sock;
+      break;
+    case CLGET_XID:
+      /*
+       * use the knowledge that xid is the
+       * first element in the call structure *.
+       * This will get the xid of the PREVIOUS call
+       */
+      *(u_long *)info = ntohl (*(u_long *)ct->ct_mcall);
+      break;
+    case CLSET_XID:
+      /* This will set the xid of the NEXT call */
+      *(u_long *)ct->ct_mcall =  htonl (*(u_long *)info - 1);
+      /* decrement by 1 as clnttcp_call() increments once */
+    case CLGET_VERS:
+      /*
+       * This RELIES on the information that, in the call body,
+       * the version number field is the fifth field from the
+       * begining of the RPC header. MUST be changed if the
+       * call_struct is changed
+       */
+      *(u_long *)info = ntohl (*(u_long *)(ct->ct_mcall +
+					   4 * BYTES_PER_XDR_UNIT));
+      break;
+    case CLSET_VERS:
+      *(u_long *)(ct->ct_mcall + 4 * BYTES_PER_XDR_UNIT)
+	= htonl (*(u_long *)info);
+      break;
+    case CLGET_PROG:
+      /*
+       * This RELIES on the information that, in the call body,
+       * the program number field is the  field from the
+       * begining of the RPC header. MUST be changed if the
+       * call_struct is changed
+       */
+      *(u_long *)info = ntohl(*(u_long *)(ct->ct_mcall +
+					  3 * BYTES_PER_XDR_UNIT));
+      break;
+    case CLSET_PROG:
+      *(u_long *)(ct->ct_mcall + 3 * BYTES_PER_XDR_UNIT)
+	= htonl(*(u_long *)info);
+      break;
+    /* The following are only possible with TI-RPC */
+    case CLGET_RETRY_TIMEOUT:
+    case CLSET_RETRY_TIMEOUT:
+    case CLGET_SVC_ADDR:
+    case CLSET_SVC_ADDR:
+    case CLSET_PUSH_TIMOD:
+    case CLSET_POP_TIMOD:
+    default:
+      return FALSE;
+    }
+  return TRUE;
 }
 
 
-static void clnttcp_destroy(h)
-CLIENT *h;
+static void
+clnttcp_destroy (CLIENT *h)
 {
-	register struct ct_data *ct = (struct ct_data *) h->cl_private;
-
-	if (ct->ct_closeit) {
-		(void) close(ct->ct_sock);
-	}
-	XDR_DESTROY(&(ct->ct_xdrs));
-	mem_free((caddr_t) ct, sizeof(struct ct_data));
-
-	mem_free((caddr_t) h, sizeof(CLIENT));
+  struct ct_data *ct =
+  (struct ct_data *) h->cl_private;
+
+  if (ct->ct_closeit)
+    {
+      (void) close (ct->ct_sock);
+    }
+  XDR_DESTROY (&(ct->ct_xdrs));
+  mem_free ((caddr_t) ct, sizeof (struct ct_data));
+  mem_free ((caddr_t) h, sizeof (CLIENT));
 }
 
 /*
@@ -389,75 +473,68 @@ CLIENT *h;
  * Behaves like the system calls, read & write, but keeps some error state
  * around for the rpc level.
  */
-static int readtcp(ct, buf, len)
-register struct ct_data *ct;
-caddr_t buf;
-register int len;
+static int
+readtcp (char *ctptr, char *buf, int len)
 {
-#ifdef FD_SETSIZE
-	fd_set mask;
-	fd_set readfds;
-
-	if (len == 0)
-		return (0);
-	FD_ZERO(&mask);
-	FD_SET(ct->ct_sock, &mask);
-#else
-	register int mask = 1 << (ct->ct_sock);
-	int readfds;
-
-	if (len == 0)
-		return (0);
-
-#endif							/* def FD_SETSIZE */
-	while (TRUE) {
-		readfds = mask;
-		switch (select
-				(_rpc_dtablesize(), &readfds,  NULL,  NULL,
-				 &(ct->ct_wait))) {
-		case 0:
-			ct->ct_error.re_status = RPC_TIMEDOUT;
-			return (-1);
-
-		case -1:
-			if (errno == EINTR)
-				continue;
-			ct->ct_error.re_status = RPC_CANTRECV;
-			ct->ct_error.re_errno = errno;
-			return (-1);
-		}
-		break;
-	}
-	switch (len = read(ct->ct_sock, buf, len)) {
-
+  struct ct_data *ct = (struct ct_data *)ctptr;
+  struct pollfd fd;
+  int milliseconds = (ct->ct_wait.tv_sec * 1000) +
+    (ct->ct_wait.tv_usec / 1000);
+
+  if (len == 0)
+    return 0;
+
+  fd.fd = ct->ct_sock;
+  fd.events = POLLIN;
+  while (TRUE)
+    {
+      switch (poll(&fd, 1, milliseconds))
+	{
 	case 0:
-		/* premature eof */
-		ct->ct_error.re_errno = ECONNRESET;
-		ct->ct_error.re_status = RPC_CANTRECV;
-		len = -1;				/* it's really an error */
-		break;
+	  ct->ct_error.re_status = RPC_TIMEDOUT;
+	  return -1;
 
 	case -1:
-		ct->ct_error.re_errno = errno;
-		ct->ct_error.re_status = RPC_CANTRECV;
-		break;
+	  if (errno == EINTR)
+	    continue;
+	  ct->ct_error.re_status = RPC_CANTRECV;
+	  ct->ct_error.re_errno = errno;
+	  return -1;
 	}
-	return (len);
+      break;
+    }
+  switch (len = read (ct->ct_sock, buf, len))
+    {
+
+    case 0:
+      /* premature eof */
+      ct->ct_error.re_errno = ECONNRESET;
+      ct->ct_error.re_status = RPC_CANTRECV;
+      len = -1;			/* it's really an error */
+      break;
+
+    case -1:
+      ct->ct_error.re_errno = errno;
+      ct->ct_error.re_status = RPC_CANTRECV;
+      break;
+    }
+  return len;
 }
 
-static int writetcp(ct, buf, len)
-struct ct_data *ct;
-caddr_t buf;
-int len;
+static int
+writetcp (char *ctptr, char *buf, int len)
 {
-	register int i, cnt;
-
-	for (cnt = len; cnt > 0; cnt -= i, buf += i) {
-		if ((i = write(ct->ct_sock, buf, cnt)) == -1) {
-			ct->ct_error.re_errno = errno;
-			ct->ct_error.re_status = RPC_CANTSEND;
-			return (-1);
-		}
+  int i, cnt;
+  struct ct_data *ct = (struct ct_data*)ctptr;
+
+  for (cnt = len; cnt > 0; cnt -= i, buf += i)
+    {
+      if ((i = write (ct->ct_sock, buf, cnt)) == -1)
+	{
+	  ct->ct_error.re_errno = errno;
+	  ct->ct_error.re_status = RPC_CANTSEND;
+	  return -1;
 	}
-	return (len);
+    }
+  return len;
 }