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, 56 insertions, 37 deletions

diff --git a/libc/inet/rpc/svc_run.c b/libc/inet/rpc/svc_run.c
index cae787b92..3ef9fbd24 100644
--- a/libc/inet/rpc/svc_run.c
+++ b/libc/inet/rpc/svc_run.c
@@ -1,7 +1,3 @@
-/* @(#)svc_run.c	2.1 88/07/29 4.0 RPCSRC */
-#define __FORCE_GLIBC
-#include <features.h>
-
 /*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  * unrestricted use provided that this legend is included on all tape
@@ -9,62 +5,85 @@
  * 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
  */
-
 /*
  * This is the rpc server side idle loop
  * Wait for input, call server program.
  */
+
+#define __FORCE_GLIBC
+#define _GNU_SOURCE
+#include <features.h>
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/poll.h>
 #include <rpc/rpc.h>
-#include <sys/errno.h>
 
-void svc_run()
+/* This function can be used as a signal handler to terminate the
+   server loop.  */
+void
+svc_exit (void)
 {
-#ifdef FD_SETSIZE
-	fd_set readfds;
-#else
-	int readfds;
-#endif							/* def FD_SETSIZE */
-	extern int errno;
+  free (svc_pollfd);
+  svc_pollfd = NULL;
+  svc_max_pollfd = 0;
+}
+
+void
+svc_run (void)
+{
+  int i;
+
+  for (;;)
+    {
+      struct pollfd *my_pollfd;
+
+      if (svc_max_pollfd == 0 && svc_pollfd == NULL)
+	return;
+
+      my_pollfd = malloc (sizeof (struct pollfd) * svc_max_pollfd);
+      for (i = 0; i < svc_max_pollfd; ++i)
+	{
+	  my_pollfd[i].fd = svc_pollfd[i].fd;
+	  my_pollfd[i].events = svc_pollfd[i].events;
+	  my_pollfd[i].revents = 0;
+	}
 
-	for (;;) {
-#ifdef FD_SETSIZE
-		readfds = svc_fdset;
-#else
-		readfds = svc_fds;
-#endif							/* def FD_SETSIZE */
-		switch (select(_rpc_dtablesize(), &readfds, NULL, NULL,
-					   (struct timeval *) 0)) {
-		case -1:
-			if (errno == EINTR) {
-				continue;
-			}
-			perror("svc_run: - select failed");
-			return;
-		case 0:
-			continue;
-		default:
-			svc_getreqset(&readfds);
-		}
+      switch (i = poll (my_pollfd, svc_max_pollfd, -1))
+	{
+	case -1:
+	  free (my_pollfd);
+	  if (errno == EINTR)
+	    continue;
+	  perror (_("svc_run: - poll failed"));
+	  return;
+	case 0:
+	  free (my_pollfd);
+	  continue;
+	default:
+	  svc_getreq_poll (my_pollfd, i);
+	  free (my_pollfd);
 	}
+    }
 }