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diff --git a/mozilla/nsprpub/pr/src/misc/pripc.c b/mozilla/nsprpub/pr/src/misc/pripc.c
new file mode 100644
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+++ b/mozilla/nsprpub/pr/src/misc/pripc.c
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is the Netscape Portable Runtime (NSPR).
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1999-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+/*
+ * File: pripc.c
+ *
+ * Description: functions for IPC support
+ */
+
+#include "primpl.h"
+
+#include <string.h>
+
+/*
+ * A POSIX IPC name must begin with a '/'.
+ * A POSIX IPC name on Solaris cannot contain any '/' except
+ * the required leading '/'.
+ * A POSIX IPC name on HP-UX and OSF1 must be a valid pathname
+ * in the file system.
+ *
+ * The ftok() function for System V IPC requires a valid pathname
+ * in the file system.
+ *
+ * A Win32 IPC name cannot contain '\'.
+ */
+
+static void _pr_ConvertSemName(char *result)
+{
+#ifdef _PR_HAVE_POSIX_SEMAPHORES
+#if defined(SOLARIS)
+    char *p;
+
+    /* Convert '/' to '_' except for the leading '/' */
+    for (p = result+1; *p; p++) {
+        if (*p == '/') {
+            *p = '_';
+        }
+    }
+    return;
+#else
+    return;
+#endif
+#elif defined(_PR_HAVE_SYSV_SEMAPHORES)
+    return;
+#elif defined(WIN32)
+    return;
+#endif
+}
+
+static void _pr_ConvertShmName(char *result)
+{
+#if defined(PR_HAVE_POSIX_NAMED_SHARED_MEMORY)
+#if defined(SOLARIS)
+    char *p;
+
+    /* Convert '/' to '_' except for the leading '/' */
+    for (p = result+1; *p; p++) {
+        if (*p == '/') {
+            *p = '_';
+        }
+    }
+    return;
+#else
+    return;
+#endif
+#elif defined(PR_HAVE_SYSV_NAMED_SHARED_MEMORY)
+    return;
+#elif defined(WIN32)
+    return;
+#else
+    return;
+#endif
+}
+
+PRStatus _PR_MakeNativeIPCName(
+    const char *name,
+    char *result,
+    PRIntn size,
+    _PRIPCType type)
+{
+    if (strlen(name) >= (PRSize)size) {
+        PR_SetError(PR_BUFFER_OVERFLOW_ERROR, 0);
+        return PR_FAILURE;
+    }
+    strcpy(result, name);
+    switch (type) {
+        case _PRIPCSem:
+            _pr_ConvertSemName(result);
+            break;
+        case _PRIPCShm:
+            _pr_ConvertShmName(result);
+            break;
+        default:
+            PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
+            return PR_FAILURE;
+    }
+    return PR_SUCCESS;
+}