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authorChris Johns <chrisj@rtems.org>2017-03-13 12:00:35 -0400
committerGedare Bloom <gedare@rtems.org>2017-05-05 10:34:08 -0400
commit8290f95cbdd5129561d8a375a223055ee7941116 (patch)
tree96d25c735f662d0bed0044d5dc88976b0e8e341b /cpukit/posix/include/rtems/posix/mmanimpl.h
parentbd9d5ebc33c35d91b5ca0746b6b78a365eeb726d (diff)
downloadrtems-8290f95cbdd5129561d8a375a223055ee7941116.tar.bz2
posix: Add mmap/unmap support for mapping files.
This version of mmap comes from early work done on the RTL code base circa 2012. Update #2859.
Diffstat (limited to 'cpukit/posix/include/rtems/posix/mmanimpl.h')
-rw-r--r--cpukit/posix/include/rtems/posix/mmanimpl.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/cpukit/posix/include/rtems/posix/mmanimpl.h b/cpukit/posix/include/rtems/posix/mmanimpl.h
new file mode 100644
index 0000000000..9743685a57
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+++ b/cpukit/posix/include/rtems/posix/mmanimpl.h
@@ -0,0 +1,44 @@
+/**
+ * @file
+ *
+ * @brief Internal Support for POSIX 1003.1b 6.3.1 - map pages of memory
+ *
+ */
+
+/*
+ * Copyright (c) 2012 Chris Johns
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef _RTEMS_POSIX_MMANIMPL_H
+#define _RTEMS_POSIX_MMANIMPL_H
+
+#include <rtems/chain.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Every mmap'ed region has a mapping.
+ */
+typedef struct mmap_mappings_s {
+ rtems_chain_node node; /**< The mapping chain's node */
+ void* addr; /**< The address of the mapped memory */
+ size_t len; /**< The length of memory mapped */
+ int flags; /**< The mapping flags */
+} mmap_mapping;
+
+extern rtems_chain_control mmap_mappings;
+
+bool mmap_mappings_lock_obtain( void );
+bool mmap_mappings_lock_release( void );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif