1 files changed, 52 insertions, 0 deletions

diff --git a/otautil/SysUtil.h b/otautil/SysUtil.h
new file mode 100644
index 000000000..7adff1e54
--- /dev/null
+++ b/otautil/SysUtil.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2006 The Android Open Source Project
+ *
+ * System utilities.
+ */
+#ifndef _MINZIP_SYSUTIL
+#define _MINZIP_SYSUTIL
+
+#include <stdio.h>
+#include <sys/types.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct MappedRange {
+    void* addr;
+    size_t length;
+} MappedRange;
+
+/*
+ * Use this to keep track of mapped segments.
+ */
+typedef struct MemMapping {
+    unsigned char* addr;           /* start of data */
+    size_t         length;         /* length of data */
+
+    int            range_count;
+    MappedRange*   ranges;
+} MemMapping;
+
+/*
+ * Map a file into a private, read-only memory segment.  If 'fn'
+ * begins with an '@' character, it is a map of blocks to be mapped,
+ * otherwise it is treated as an ordinary file.
+ *
+ * On success, "pMap" is filled in, and zero is returned.
+ */
+int sysMapFile(const char* fn, MemMapping* pMap);
+
+/*
+ * Release the pages associated with a shared memory segment.
+ *
+ * This does not free "pMap"; it just releases the memory.
+ */
+void sysReleaseMap(MemMapping* pMap);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*_MINZIP_SYSUTIL*/