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, 120 insertions, 71 deletions

diff --git a/libc/inet/rpc/clnt_simple.c b/libc/inet/rpc/clnt_simple.c
index 3ec4aedfe..fe65d4e23 100644
--- a/libc/inet/rpc/clnt_simple.c
+++ b/libc/inet/rpc/clnt_simple.c
@@ -6,110 +6,159 @@
  * 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_simple.c 1.35 87/08/11 Copyr 1984 Sun Micro";
+#endif
 
-/* 
+/*
  * clnt_simple.c
  * Simplified front end to rpc.
  *
  * Copyright (C) 1984, Sun Microsystems, Inc.
  */
 
+#define __FORCE_GLIBC
+#include <features.h>
+
+#include <alloca.h>
+#include <errno.h>
 #include <stdio.h>
 #include <unistd.h>
 #include <rpc/rpc.h>
 #include <sys/socket.h>
 #include <netdb.h>
-#include <strings.h>
+#include <string.h>
 
-static struct callrpc_private {
-	CLIENT *client;
-	int socket;
-	int oldprognum, oldversnum, valid;
-	char *oldhost;
-} *callrpc_private;
+struct callrpc_private_s
+  {
+    CLIENT *client;
+    int socket;
+    u_long oldprognum, oldversnum, valid;
+    char *oldhost;
+  };
+#ifdef _RPC_THREAD_SAFE_
+#define callrpc_private ((struct callrpc_private_s *)RPC_THREAD_VARIABLE(callrpc_private_s))
+#else
+static struct callrpc_private_s *callrpc_private;
+#endif
 
-int callrpc (const char *host, const u_long prognum,
-			 const u_long versnum, const u_long procnum,
-			 const xdrproc_t inproc, const char *in,
-			 const xdrproc_t outproc, char *out)
+int
+callrpc (const char *host, u_long prognum, u_long versnum, u_long procnum,
+	 xdrproc_t inproc, const char *in, xdrproc_t outproc, char *out)
 {
-	register struct callrpc_private *crp = callrpc_private;
-	struct sockaddr_in server_addr;
-	enum clnt_stat clnt_stat;
-	struct hostent *hp;
-	struct timeval timeout, tottimeout;
+  struct callrpc_private_s *crp = callrpc_private;
+  struct sockaddr_in server_addr;
+  enum clnt_stat clnt_stat;
+  struct hostent hostbuf, *hp;
+  struct timeval timeout, tottimeout;
 
-	if (crp == 0) {
-		crp = (struct callrpc_private *) calloc(1, sizeof(*crp));
-		if (crp == 0)
-			return (0);
-		callrpc_private = crp;
-	}
-	if (crp->oldhost == NULL) {
-		crp->oldhost = malloc(256);
-		crp->oldhost[0] = 0;
-		crp->socket = RPC_ANYSOCK;
+  if (crp == 0)
+    {
+      crp = (struct callrpc_private_s *) calloc (1, sizeof (*crp));
+      if (crp == 0)
+	return 0;
+      callrpc_private = crp;
+    }
+  if (crp->oldhost == NULL)
+    {
+      crp->oldhost = malloc (256);
+      crp->oldhost[0] = 0;
+      crp->socket = RPC_ANYSOCK;
+    }
+  if (crp->valid && crp->oldprognum == prognum && crp->oldversnum == versnum
+      && strcmp (crp->oldhost, host) == 0)
+    {
+      /* reuse old client */
+    }
+  else
+    {
+      size_t buflen;
+      char *buffer;
+      int herr;
+
+      crp->valid = 0;
+      if (crp->socket != RPC_ANYSOCK)
+	{
+	  (void) close (crp->socket);
+	  crp->socket = RPC_ANYSOCK;
 	}
-	if (crp->valid && crp->oldprognum == prognum
-		&& crp->oldversnum == versnum && 
-		strcmp(crp->oldhost, host) == 0) 
+      if (crp->client)
 	{
-		/* reuse old client */
-	} else {
-		crp->valid = 0;
-		(void) close(crp->socket);
-		crp->socket = RPC_ANYSOCK;
-		if (crp->client) {
-			clnt_destroy(crp->client);
-			crp->client = NULL;
-		}
-		if ((hp = gethostbyname(host)) == NULL)
-			return ((int) RPC_UNKNOWNHOST);
-		timeout.tv_usec = 0;
-		timeout.tv_sec = 5;
-		bcopy(hp->h_addr, (char *) &server_addr.sin_addr, hp->h_length);
-		server_addr.sin_family = AF_INET;
-		server_addr.sin_port = 0;
-		if ((crp->client = clntudp_create(&server_addr, 
-				(u_long) prognum, (u_long) versnum, 
-				timeout, &crp->socket)) == NULL)
-			return ((int) rpc_createerr.cf_stat);
-		crp->valid = 1;
-		crp->oldprognum = prognum;
-		crp->oldversnum = versnum;
-		(void) strcpy(crp->oldhost, host);
+	  clnt_destroy (crp->client);
+	  crp->client = NULL;
+	}
+
+      buflen = 1024;
+      buffer = alloca (buflen);
+      while (gethostbyname_r (host, &hostbuf, buffer, buflen,
+				&hp, &herr) != 0
+	     || hp == NULL)
+	if (herr != NETDB_INTERNAL || errno != ERANGE)
+	  return (int) RPC_UNKNOWNHOST;
+	else
+	  {
+	    /* Enlarge the buffer.  */
+	    buflen *= 2;
+	    buffer = alloca (buflen);
+	  }
+
+      timeout.tv_usec = 0;
+      timeout.tv_sec = 5;
+      memcpy ((char *) &server_addr.sin_addr, hp->h_addr, hp->h_length);
+      server_addr.sin_family = AF_INET;
+      server_addr.sin_port = 0;
+      if ((crp->client = clntudp_create (&server_addr, (u_long) prognum,
+			  (u_long) versnum, timeout, &crp->socket)) == NULL)
+	return (int) get_rpc_createerr().cf_stat;
+      crp->valid = 1;
+      crp->oldprognum = prognum;
+      crp->oldversnum = versnum;
+      (void) strncpy (crp->oldhost, host, 255);
+      crp->oldhost[255] = '\0';
+    }
+  tottimeout.tv_sec = 25;
+  tottimeout.tv_usec = 0;
+  clnt_stat = clnt_call (crp->client, procnum, inproc, (char *) in,
+			 outproc, out, tottimeout);
+  /*
+   * if call failed, empty cache
+   */
+  if (clnt_stat != RPC_SUCCESS)
+    crp->valid = 0;
+  return (int) clnt_stat;
+}
+
+#ifdef _RPC_THREAD_SAFE_
+void
+__rpc_thread_clnt_cleanup (void)
+{
+	struct callrpc_private_s *rcp = RPC_THREAD_VARIABLE(callrpc_private_s);
+
+	if (rcp) {
+		if (rcp->client)
+			CLNT_DESTROY (rcp->client);
+		free (rcp);
 	}
-	tottimeout.tv_sec = 25;
-	tottimeout.tv_usec = 0;
-	clnt_stat = clnt_call(crp->client, procnum, inproc, (char*)in, 
-		outproc, out, tottimeout);
-	/* 
-	 * if call failed, empty cache
-	 */
-	if (clnt_stat != RPC_SUCCESS)
-		crp->valid = 0;
-	return ((int) clnt_stat);
 }
+#endif /* _RPC_THREAD_SAFE_ */