1 files changed, 53 insertions, 0 deletions
diff --git a/physmem/mmap.c b/physmem/mmap.c
new file mode 100644
index 0000000..c54a7d2
--- /dev/null
+++ b/physmem/mmap.c
@@ -0,0 +1,53 @@
+/* mmap.c - A simple mmap for anonymous memory allocations in physmem.
+   Copyright (C) 2003 Free Software Foundation, Inc.
+   Written by Marcus Brinkmann.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd 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 Hurd 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.  */
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <sys/mman.h>
+
+#include "output.h"
+#include "zalloc.h"
+
+
+void *
+mmap (void *address, size_t length, int protect, int flags,
+      int filedes, off_t offset)
+{
+  if (address)
+    panic ("mmap called with non-zero ADDRESS");
+  if (flags != (MAP_PRIVATE | MAP_ANONYMOUS))
+    panic ("mmap called with invalid flags");
+  if (protect != (PROT_READ | PROT_WRITE))
+    panic ("mmap called with invalid protection");
+
+  /* At this point, we can safely ignore FILEDES and OFFSET.  */
+  return (((void *) zalloc (length)) ?: (void *) -1);
+}
+
+
+int
+munmap (void *addr, size_t length)
+{
+  zfree ((l4_word_t) addr, length);
+  return 0;
+}