1 files changed, 153 insertions, 0 deletions
diff --git a/desktop/source/pagein/file_image_unx.c b/desktop/source/pagein/file_image_unx.c
new file mode 100755
index 000000000000..fa1af9248d60
--- /dev/null
+++ b/desktop/source/pagein/file_image_unx.c
@@ -0,0 +1,153 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#include "file_image.h"
+
+#include <unistd.h>
+
+#include <errno.h>
+#include <fcntl.h>
+
+#if defined(LINUX)
+#  ifndef __USE_BSD
+#    define __USE_BSD /* madvise, MADV_WILLNEED */
+#  endif
+#endif /* Linux */
+
+#include <sys/mman.h>
+#include <sys/stat.h>
+
+#include <string.h>
+
+/*
+ * file_image_open
+ */
+int file_image_open (file_image * image, const char * filename)
+{
+    int         result = 0;
+    int         fd;
+    struct stat st;
+    void *      p;
+
+    if (image == 0)
+        return (EINVAL);
+
+    image->m_base = MAP_FAILED, image->m_size = 0;
+
+    if ((fd = open (filename, O_RDONLY)) == -1)
+        return (errno);
+
+    if (fstat (fd, &st) == -1)
+    {
+        result = errno;
+        goto cleanup_and_leave;
+    }
+
+    p = mmap (0, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+    if (p == MAP_FAILED)
+    {
+        result = errno;
+        goto cleanup_and_leave;
+    }
+
+    image->m_base = p, image->m_size = st.st_size;
+
+cleanup_and_leave:
+    close (fd);
+    return (result);
+}
+
+/*
+ * file_image_pagein.
+ */
+int file_image_pagein (file_image * image)
+{
+    file_image    w;
+    long          s;
+    size_t        k;
+    volatile char c = 0;
+
+    if (image == 0)
+        return (EINVAL);
+
+    if ((w.m_base = image->m_base) == 0)
+        return (EINVAL);
+    if ((w.m_size = image->m_size) == 0)
+        return (0);
+
+    if (madvise (w.m_base, w.m_size, MADV_WILLNEED) == -1)
+    {
+#ifndef MACOSX
+        return (errno);
+#else
+        /* madvise MADV_WILLNEED need not succeed here */
+        /* but that is fine */
+#endif
+    }
+
+
+#ifndef MACOSX
+    if ((s = sysconf (_SC_PAGESIZE)) == -1)
+        s = 0x1000;
+#else
+    s = getpagesize();
+#endif
+
+    k = (size_t)(s);
+    while (w.m_size > k)
+    {
+        c ^= ((char*)(w.m_base))[0];
+        w.m_base  = (char*)(w.m_base) + k;
+        w.m_size -= k;
+    }
+    if (w.m_size > 0)
+    {
+        c ^= ((char*)(w.m_base))[0];
+        w.m_base  = (char*)(w.m_base) + w.m_size;
+        w.m_size -= w.m_size;
+    }
+
+    return (0);
+}
+
+/*
+ * file_image_close
+ */
+int file_image_close (file_image * image)
+{
+    if (image == 0)
+        return (EINVAL);
+
+    if (munmap (image->m_base, image->m_size) == -1)
+        return (errno);
+
+    image->m_base = 0, image->m_size = 0;
+    return (0);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */