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, 64 insertions, 0 deletions

diff --git a/libc/inet/rpc/create_xid.c b/libc/inet/rpc/create_xid.c
new file mode 100644
index 000000000..c184e816d
--- /dev/null
+++ b/libc/inet/rpc/create_xid.c
@@ -0,0 +1,64 @@
+/* Copyright (c) 1998, 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1998.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#define __FORCE_GLIBC
+#include <features.h>
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/time.h>
+#include <rpc/rpc.h>
+
+/* The RPC code is not threadsafe, but new code should be threadsafe. */
+
+#ifdef _RPC_THREAD_SAFE_ //__UCLIBC_HAS_THREADS__
+#include <pthread.h>
+static pthread_mutex_t createxid_lock = PTHREAD_MUTEX_INITIALIZER;
+# define LOCK	pthread_mutex_lock(&createxid_lock)
+# define UNLOCK	pthread_mutex_unlock(&createxid_lock);
+#else
+# define LOCK
+# define UNLOCK
+#endif
+
+static int is_initialized;
+static struct drand48_data __rpc_lrand48_data;
+
+unsigned long
+_create_xid (void)
+{
+  unsigned long res;
+
+  LOCK;
+
+  if (!is_initialized)
+    {
+      struct timeval now;
+
+      gettimeofday (&now, (struct timezone *) 0);
+      srand48_r (now.tv_sec ^ now.tv_usec, &__rpc_lrand48_data);
+      is_initialized = 1;
+    }
+
+  lrand48_r (&__rpc_lrand48_data, &res);
+
+  UNLOCK;
+
+  return res;
+}