Created student weenix repository

1 files changed, 75 insertions, 0 deletions

diff --git a/kernel/include/mm/mobj.h b/kernel/include/mm/mobj.h
new file mode 100644
index 0000000..bca1b38
--- /dev/null
+++ b/kernel/include/mm/mobj.h
@@ -0,0 +1,75 @@
+#pragma once
+
+#include "proc/kmutex.h"
+#include "util/atomic.h"
+#include "util/list.h"
+#include "mm/pframe.h"
+
+struct pframe;
+
+struct mobj;
+
+typedef enum
+{
+    MOBJ_VNODE = 1,
+    MOBJ_SHADOW,
+    MOBJ_ANON,
+#ifdef OLD
+    MOBJ_BLOCKDEV,
+#else
+    MOBJ_FS,
+#endif
+} mobj_type_t;
+
+typedef struct mobj_ops
+{
+    long (*get_pframe)(struct mobj *o, uint64_t pagenum, long forwrite,
+                       struct pframe **pfp);
+
+    long (*fill_pframe)(struct mobj *o, struct pframe *pf);
+
+    long (*flush_pframe)(struct mobj *o, struct pframe *pf);
+
+    void (*destructor)(struct mobj *o);
+} mobj_ops_t;
+
+typedef struct mobj
+{
+    long mo_type;
+    struct mobj_ops mo_ops;
+    atomic_t mo_refcount;
+    list_t mo_pframes;
+    kmutex_t mo_mutex;
+} mobj_t;
+
+void mobj_init(mobj_t *o, long type, mobj_ops_t *ops);
+
+void mobj_lock(mobj_t *o);
+
+void mobj_unlock(mobj_t *o);
+
+void mobj_ref(mobj_t *o);
+
+void mobj_put(mobj_t **op);
+
+void mobj_put_locked(mobj_t **op);
+
+long mobj_get_pframe(mobj_t *o, uint64_t pagenum, long forwrite,
+                     struct pframe **pfp);
+
+void mobj_find_pframe(mobj_t *o, uint64_t pagenum, struct pframe **pfp);
+
+long mobj_flush_pframe(mobj_t *o, struct pframe *pf);
+
+long mobj_flush(mobj_t *o);
+
+long mobj_free_pframe(mobj_t *o, struct pframe **pfp);
+
+long mobj_default_get_pframe(mobj_t *o, uint64_t pagenum, long forwrite,
+                             struct pframe **pfp);
+
+void mobj_default_destructor(mobj_t *o);
+
+#ifndef OLD
+void mobj_create_pframe(mobj_t *o, uint64_t pagenum, uint64_t loc, pframe_t **pfp);
+#endif
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