1 files changed, 21 insertions, 3 deletions
diff --git a/SDKs/linux/usr/include/sys/mman.h b/SDKs/linux/usr/include/sys/mman.h
index 7c4d05181..bfb7f8bb0 100644
--- a/SDKs/linux/usr/include/sys/mman.h
+++ b/SDKs/linux/usr/include/sys/mman.h
@@ -19,10 +19,28 @@
 
 typedef __SIZE_TYPE__ size_t;
 
-#define PROT_READ 0x1
-#define PROT_WRITE 0x2
-#define PROT_EXEC 0x4
+#define PROT_NONE     0x00
+#define PROT_READ     0x01
+#define PROT_WRITE    0x02
+#define PROT_EXEC     0x04
 
+#define MAP_SHARED    0x0001
+#define MAP_PRIVATE   0x0002
+
+#define MAP_FILE      0x0000
+#define MAP_ANON      0x1000
+
+#define MS_ASYNC      0x0001
+#define MS_INVALIDATE 0x0002
+#define MS_SYNC       0x0010
+
+extern void *mmap(void *addr, size_t len, int prot, int flags, int fd,
+                  long long offset)
+  __attribute__((__nothrow__));
+extern int munmap(void *addr, size_t len)
+  __attribute__((__nothrow__));
+extern int msync(void *addr, size_t len, int flags)
+  __attribute__((__nothrow__));
 extern int mprotect (void *__addr, size_t __len, int __prot)
   __attribute__((__nothrow__));