X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Kernel%2Fvfs%2Fmmap.c;h=cbfce43b019d6179c361aceda029758699c22777;hb=HEAD;hp=f8422bbd7dfbafdbeb33b4691cbf628712d62839;hpb=8b7dec58d79aad0ba8467a15c353eade8ad5592b;p=tpg%2Facess2.git

diff --git a/Kernel/vfs/mmap.c b/Kernel/vfs/mmap.c
deleted file mode 100644
index f8422bbd..00000000
--- a/Kernel/vfs/mmap.c
+++ /dev/null
@@ -1,112 +0,0 @@
-/*
- * Acess2 VFS
- * - Open, Close and ChDir
- */
-#define DEBUG	0
-#include <acess.h>
-#include <vfs.h>
-#include <vfs_ext.h>
-#include <vfs_int.h>
-
-#define MMAP_PAGES_PER_BLOCK	16
-
-// === STRUCTURES ===
-typedef struct sVFS_MMapPageBlock
-{
-	tVFS_MMapPageBlock	*Next;
-	Uint64	BaseOffset;	// Must be a multiple of MMAP_PAGES_PER_BLOCK*PAGE_SIZE
-	tPAddr	PhysAddrs[MMAP_PAGES_PER_BLOCK];
-} tVFS_MMapPageBlock;
-
-// === CODE ===
-void *VFS_MMap(int *ErrNo, void *DestHint, size_t Length, int Protection, int Flags, int FD, Uint64 Offset)
-{
-	tVFS_Handle	*h;
-	void	*mapping_dest;
-	 int	npages, pagenum;
-	tVFS_MMapPageBlock	*pb, *prev;
-	
-	npages = ((Offset & (PAGE_SIZE-1)) + Length) / PAGE_SIZE;
-	pagenum = Offset / PAGE_SIZE;
-
-	mapping_dest = DestHint;	
-
-	// TODO: Locate space for the allocation
-	if( Flags & MAP_ANONYMOUS )
-	{
-		MM_Allocate(mapping_dest);
-		return mapping_dest;
-	}
-
-	h = VFS_GetHandle(FD);
-	if( !h || !h->Node )	return NULL;
-
-	// Search for existing mapping for each page
-	// - Sorted list of 16 page blocks
-	for(
-		pb = h->Node->MMapInfo, prev = NULL;
-		pb && pb->BaseOffset + MMAP_PAGES_PER_BLOCK < pagenum;
-		prev = pb, pb = pb->Next
-		);
-
-	if( !pb || pb->BaseOffset > pagenum )
-	{
-		void	*old_pb = pb;
-		// Allocate if needed
-		pb = malloc( sizeof(tVFS_MMapPageBlock) );
-		if(!pb)	return NULL;
-		pb->Next = old_pb;
-		pb->BaseOffset = pagenum - pagenum % MMAP_PAGES_PER_BLOCK;
-		memset(pb->PhysAddrs, 0, sizeof(pb->PhysAddrs));
-		if(prev)
-			prev->Next = pb;
-		else
-			h->Node->MMapInfo = pb;
-	}
-
-	while( npages -- )
-	{
-		if( pb->PhysAddrs[pagenum - pb->BaseOffset] == 0 )
-		{
-			if( h->Node->MMap )
-				h->Node->MMap(h->Node, pagenum*PAGE_SIZE, PAGE_SIZE, mapping_dest);
-			else
-			{
-				// Allocate pages and read data
-				MM_Allocate(mapping_dest);
-				h->Node->Read(h->Node, pagenum*PAGE_SIZE, PAGE_SIZE, mapping_dest);
-			}
-			pb->PhysAddrs[pagenum -> pb->BaseOffset] = MM_GetPhysAddr( mapping_dest );
-		}
-		else
-		{
-			MM_Map( mapping_dest, pb->PhysAddrs[pagenum - pb->BaseOffset] );
-		}
-		pagenum ++;
-		mapping_dest += PAGE_SIZE;
-		
-		// Roll on to next block if needed
-		if(pagenum - pb->BaseOffset == MMAP_PAGES_PER_BLOCK)
-		{
-			if( pb->Next && pb->Next->BaseOffset == pagenum )
-				pb = pb->Next;
-			else
-			{
-				tVFS_MMapPageBlock	*oldpb = pb;
-				pb = malloc( sizeof(tVFS_MMapPageBlock) );
-				pb->Next = oldpb->Next;
-				pb->BaseOffset = pagenum;
-				memset(pb->PhysAddrs, 0, sizeof(pb->PhysAddrs));
-				oldpb->Next = pb;
-			}
-			pagenum = 0;
-		}
-	}
-	
-	return NULL;
-}
-
-int VFS_MUnmap(int *ErrNo, void *Addr, size_t Length)
-{
-	return 0;
-}