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, 149 insertions, 0 deletions

diff --git a/libc/inet/rpc/rtime.c b/libc/inet/rpc/rtime.c
new file mode 100644
index 000000000..683078142
--- /dev/null
+++ b/libc/inet/rpc/rtime.c
@@ -0,0 +1,149 @@
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rtime.c	2.2 88/08/10 4.0 RPCSRC; from 1.8 88/02/08 SMI";
+#endif
+/*
+ * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
+ * unrestricted use provided that this legend is included on all tape
+ * media and as a part of the software program in whole or part.  Users
+ * 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
+ */
+
+/*
+ * Copyright (c) 1988 by Sun Microsystems, Inc.
+ */
+/*
+ * rtime - get time from remote machine
+ *
+ * gets time, obtaining value from host
+ * on the udp/time socket.  Since timeserver returns
+ * with time of day in seconds since Jan 1, 1900,  must
+ * subtract seconds before Jan 1, 1970 to get
+ * what unix uses.
+ */
+#define __FORCE_GLIBC
+#include <features.h>
+
+#include <stdio.h>
+#include <unistd.h>
+#include <rpc/rpc.h>
+#include <rpc/clnt.h>
+#include <sys/types.h>
+#include <sys/poll.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <rpc/auth_des.h>
+#include <errno.h>
+#include <netinet/in.h>
+
+#define NYEARS	(u_long)(1970 - 1900)
+#define TOFFSET (u_long)(60*60*24*(365*NYEARS + (NYEARS/4)))
+
+static void do_close (int);
+
+static void
+do_close (int s)
+{
+  int save;
+
+  save = errno;
+  close (s);
+  __set_errno (save);
+}
+
+int
+rtime (struct sockaddr_in *addrp, struct rpc_timeval *timep,
+       struct rpc_timeval *timeout)
+{
+  int s;
+  struct pollfd fd;
+  int milliseconds;
+  int res;
+  unsigned long thetime;
+  struct sockaddr_in from;
+  int fromlen;
+  int type;
+
+  if (timeout == NULL)
+    type = SOCK_STREAM;
+  else
+    type = SOCK_DGRAM;
+
+  s = socket (AF_INET, type, 0);
+  if (s < 0)
+    return (-1);
+
+  addrp->sin_family = AF_INET;
+  addrp->sin_port = htons (IPPORT_TIMESERVER);
+  if (type == SOCK_DGRAM)
+    {
+      res = sendto (s, (char *) &thetime, sizeof (thetime), 0,
+		    (struct sockaddr *) addrp, sizeof (*addrp));
+      if (res < 0)
+	{
+	  do_close (s);
+	  return -1;
+	}
+      milliseconds = (timeout->tv_sec * 1000) + (timeout->tv_usec / 1000);
+      fd.fd = s;
+      fd.events = POLLIN;
+      do
+	res = poll (&fd, 1, milliseconds);
+      while (res < 0 && errno == EINTR);
+      if (res <= 0)
+	{
+	  if (res == 0)
+	    __set_errno (ETIMEDOUT);
+	  do_close (s);
+	  return (-1);
+	}
+      fromlen = sizeof (from);
+      res = recvfrom (s, (char *) &thetime, sizeof (thetime), 0,
+		      (struct sockaddr *) &from, &fromlen);
+      do_close (s);
+      if (res < 0)
+	return -1;
+    }
+  else
+    {
+      if (connect (s, (struct sockaddr *) addrp, sizeof (*addrp)) < 0)
+	{
+	  do_close (s);
+	  return -1;
+	}
+      res = read (s, (char *) &thetime, sizeof (thetime));
+      do_close (s);
+      if (res < 0)
+	return (-1);
+    }
+  if (res != sizeof (thetime))
+    {
+      __set_errno (EIO);
+      return -1;
+    }
+  thetime = ntohl (thetime);
+  timep->tv_sec = thetime - TOFFSET;
+  timep->tv_usec = 0;
+  return 0;
+}