Framework for exporting system header to user space (#59)

[lunaix-os.git] / lunaix-os / includes / lunaix / mm / mm.h

diff --git a/lunaix-os/includes/lunaix/mm/mm.h b/lunaix-os/includes/lunaix/mm/mm.h
index 5890f6181e677c95a81d768f7b2acbff1ae2eb29..742ee1d4139cd1532c234bbc08138ec54dd413e6 100644 (file)
--- a/lunaix-os/includes/lunaix/mm/mm.h
+++ b/lunaix-os/includes/lunaix/mm/mm.h
@@ -1,40 +1,33 @@
 #ifndef __LUNAIX_MM_H
 #define __LUNAIX_MM_H
 
-#include <lunaix/ds/llist.h>
-#include <lunaix/ds/mutex.h>
-#include <lunaix/fs.h>
 #include <lunaix/types.h>
+#include <lunaix/ds/llist.h>
 
-#include <usr/sys/mann_flags.h>
+#include <asm/pagetable.h>
 
-typedef struct
-{
-    void* start;
-    void* brk;
-    void* max_addr;
-    mutex_t lock;
-} heap_context_t;
+#include <usr/lunaix/mman.h>
 
 /**
  * @brief 私有区域，该区域中的页无法进行任何形式的共享。
  *
  */
-#define REGION_PRIVATE MAP_PRIVATE
+#define REGION_PRIVATE MAP_EXCLUSIVE
 
 /**
  * @brief
  * 读共享区域，该区域中的页可以被两个进程之间读共享，但任何写操作须应用Copy-On-Write
+ * 等价于 POSIX 的 MAP_PRIVATE
  *
  */
-#define REGION_RSHARED MAP_RSHARED
+#define REGION_RSHARED MAP_PRIVATE
 
 /**
  * @brief
  * 写共享区域，该区域中的页可以被两个进程之间读共享，任何的写操作无需执行Copy-On-Write
- *
+ * 等价于 POSIX 的 MAP_SHARED
  */
-#define REGION_WSHARED MAP_WSHARED
+#define REGION_WSHARED MAP_SHARED
 
 #define REGION_PERM_MASK 0x1c
 #define REGION_MODE_MASK 0x3
@@ -44,20 +37,38 @@ typedef struct
 #define REGION_EXEC PROT_EXEC
 #define REGION_ANON MAP_ANON
 #define REGION_RW REGION_READ | REGION_WRITE
+#define REGION_KERNEL (1 << 31)
 
-#define REGION_TYPE_CODE (1 << 16);
-#define REGION_TYPE_GENERAL (2 << 16);
-#define REGION_TYPE_HEAP (3 << 16);
-#define REGION_TYPE_STACK (4 << 16);
+#define REGION_TYPE_CODE (1 << 16)
+#define REGION_TYPE_GENERAL (2 << 16)
+#define REGION_TYPE_HEAP (3 << 16)
+#define REGION_TYPE_STACK (4 << 16)
+#define REGION_TYPE_VARS (5 << 16)
 
 struct mm_region
 {
     struct llist_header head; // must be first field!
+    struct proc_mm* proc_vms;
+
+    // file mapped to this region
     struct v_file* mfile;
-    u32_t offset;
+    // mapped file offset
+    off_t foff;
+    // mapped file length
+
     ptr_t start;
     ptr_t end;
     u32_t attr;
+    size_t flen;
+
+    void** index; // fast reference, to accelerate access to this very region.
+
+    void* data;
+    // when a region is copied
+    void (*region_copied)(struct mm_region*);
+    // when a region is unmapped
+    void (*destruct_region)(struct mm_region*);
 };
 
+
 #endif /* __LUNAIX_MM_H */