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, 126 insertions, 68 deletions

diff --git a/libc/inet/rpc/clnt_generic.c b/libc/inet/rpc/clnt_generic.c
index 5b4b5997f..79df33113 100644
--- a/libc/inet/rpc/clnt_generic.c
+++ b/libc/inet/rpc/clnt_generic.c
@@ -1,4 +1,3 @@
-/* @(#)clnt_generic.c	2.2 88/08/01 4.0 RPCSRC */
 /*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  * unrestricted use provided that this legend is included on all tape
@@ -6,11 +5,11 @@
  * 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.
@@ -18,20 +17,25 @@
  * 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>
 /*
  * Copyright (C) 1987, Sun Microsystems, Inc.
  */
+
+#define __FORCE_GLIBC
+#include <features.h>
+
+#include <alloca.h>
+#include <errno.h>
+#include <string.h>
 #include <rpc/rpc.h>
 #include <sys/socket.h>
 #include <sys/errno.h>
@@ -39,72 +43,126 @@
 
 /*
  * Generic client creation: takes (hostname, program-number, protocol) and
- * returns client handle. Default options are set, which the user can 
+ * returns client handle. Default options are set, which the user can
  * change using the rpc equivalent of ioctl()'s.
  */
-CLIENT *clnt_create __P ((const char *hostname, const u_long prog,
-				 const u_long vers, const char *proto))
+CLIENT *
+clnt_create (const char *hostname, u_long prog, u_long vers,
+	     const char *proto)
 {
-	struct hostent *h;
-	struct protoent *p;
-	struct sockaddr_in sin;
-	int sock;
-	struct timeval tv;
-	CLIENT *client;
+  struct hostent hostbuf, *h;
+  size_t hstbuflen;
+  char *hsttmpbuf;
+  struct protoent *p;
+  struct sockaddr_in sin;
+  struct sockaddr_un sun;
+  int sock;
+  struct timeval tv;
+  CLIENT *client;
+  int herr;
 
-	h = gethostbyname(hostname);
-	if (h == NULL) {
-		rpc_createerr.cf_stat = RPC_UNKNOWNHOST;
-		return (NULL);
-	}
-	if (h->h_addrtype != AF_INET) {
-		/*
-		 * Only support INET for now
-		 */
-		rpc_createerr.cf_stat = RPC_SYSTEMERROR;
-		rpc_createerr.cf_error.re_errno = EAFNOSUPPORT;
-		return (NULL);
-	}
-#ifdef __linux__
-	bzero((char *) &sin, sizeof(sin));
-#endif
-	sin.sin_family = h->h_addrtype;
-	sin.sin_port = 0;
-#ifndef __linux__
-	bzero(sin.sin_zero, sizeof(sin.sin_zero));
+  if (strcmp (proto, "unix") == 0)
+    {
+      bzero ((char *)&sun, sizeof (sun));
+      sun.sun_family = AF_UNIX;
+      strcpy (sun.sun_path, hostname);
+      sock = RPC_ANYSOCK;
+      client = clntunix_create (&sun, prog, vers, &sock, 0, 0);
+      if (client == NULL)
+	return NULL;
+#if 0
+      /* This is not wanted.  This would disable the user from having
+	 a timeout in the clnt_call() call.  Only a call to cnlt_control()
+	 by the user should set the timeout value.  */
+      tv.tv_sec = 25;
+      tv.tv_usec = 0;
+      clnt_control (client, CLSET_TIMEOUT, (char *)&tv);
 #endif
-	bcopy(h->h_addr, (char *) &sin.sin_addr, h->h_length);
-	p = getprotobyname(proto);
-	if (p == NULL) {
-		rpc_createerr.cf_stat = RPC_UNKNOWNPROTO;
-		rpc_createerr.cf_error.re_errno = EPFNOSUPPORT;
-		return (NULL);
+      return client;
+    }
+
+  hstbuflen = 1024;
+  hsttmpbuf = alloca (hstbuflen);
+  while (gethostbyname_r (hostname, &hostbuf, hsttmpbuf, hstbuflen,
+			    &h, &herr) != 0
+	 || h == NULL)
+    if (herr != NETDB_INTERNAL || errno != ERANGE)
+      {
+	get_rpc_createerr().cf_stat = RPC_UNKNOWNHOST;
+	return NULL;
+      }
+    else
+      {
+	/* Enlarge the buffer.  */
+	hstbuflen *= 2;
+	hsttmpbuf = alloca (hstbuflen);
+      }
+
+  if (h->h_addrtype != AF_INET)
+    {
+      /*
+       * Only support INET for now
+       */
+      struct rpc_createerr *ce = &get_rpc_createerr ();
+      ce->cf_stat = RPC_SYSTEMERROR;
+      ce->cf_error.re_errno = EAFNOSUPPORT;
+      return NULL;
+    }
+  sin.sin_family = h->h_addrtype;
+  sin.sin_port = 0;
+  bzero (sin.sin_zero, sizeof (sin.sin_zero));
+  memcpy ((char *) &sin.sin_addr, h->h_addr, h->h_length);
+
+#warning getprotobyname is not reentrant...  Add getprotobyname_r
+  p = getprotobyname(proto);
+  if (p == NULL) {
+      struct rpc_createerr *ce = &get_rpc_createerr ();
+      ce->cf_stat = RPC_UNKNOWNPROTO;
+      ce->cf_error.re_errno = EPFNOSUPPORT;
+      return NULL;
+  }
+
+  sock = RPC_ANYSOCK;
+  switch (p->p_proto)
+    {
+    case IPPROTO_UDP:
+      tv.tv_sec = 5;
+      tv.tv_usec = 0;
+      client = clntudp_create (&sin, prog, vers, tv, &sock);
+      if (client == NULL)
+	{
+	  return NULL;
 	}
-	sock = RPC_ANYSOCK;
-	switch (p->p_proto) {
-	case IPPROTO_UDP:
-		tv.tv_sec = 5;
-		tv.tv_usec = 0;
-		client = clntudp_create(&sin, prog, vers, tv, &sock);
-		if (client == NULL) {
-			return (NULL);
-		}
-		tv.tv_sec = 25;
-		clnt_control(client, CLSET_TIMEOUT, (char*)&tv);
-		break;
-	case IPPROTO_TCP:
-		client = clnttcp_create(&sin, prog, vers, &sock, 0, 0);
-		if (client == NULL) {
-			return (NULL);
-		}
-		tv.tv_sec = 25;
-		tv.tv_usec = 0;
-		clnt_control(client, CLSET_TIMEOUT, (char*)&tv);
-		break;
-	default:
-		rpc_createerr.cf_stat = RPC_SYSTEMERROR;
-		rpc_createerr.cf_error.re_errno = EPFNOSUPPORT;
-		return (NULL);
+#if 0
+      /* This is not wanted.  This would disable the user from having
+	 a timeout in the clnt_call() call.  Only a call to cnlt_control()
+	 by the user should set the timeout value.  */
+      tv.tv_sec = 25;
+      clnt_control (client, CLSET_TIMEOUT, (char *)&tv);
+#endif
+      break;
+    case IPPROTO_TCP:
+      client = clnttcp_create (&sin, prog, vers, &sock, 0, 0);
+      if (client == NULL)
+	{
+	  return NULL;
 	}
-	return (client);
+#if 0
+      /* This is not wanted.  This would disable the user from having
+	 a timeout in the clnt_call() call.  Only a call to cnlt_control()
+	 by the user should set the timeout value.  */
+      tv.tv_sec = 25;
+      tv.tv_usec = 0;
+      clnt_control (client, CLSET_TIMEOUT, (char *)&tv);
+#endif
+      break;
+    default:
+      {
+	struct rpc_createerr *ce = &get_rpc_createerr ();
+	ce->cf_stat = RPC_SYSTEMERROR;
+	ce->cf_error.re_errno = EPFNOSUPPORT;
+      }
+      return (NULL);
+    }
+  return client;
 }