X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Kernel%2Fvfs%2Fio.c;h=212a7c211c9e8dd2c5e9170807b9ce6065a24a30;hb=7177e27ebe90ae180a0c645f319f39c89f07373b;hp=8ff15f56c6a7ec33895605ff2326e843c1dbbf4c;hpb=a4ce2e60f783c9e71447edc03f20f937b8abf35a;p=tpg%2Facess2.git

diff --git a/Kernel/vfs/io.c b/Kernel/vfs/io.c
index 8ff15f56..212a7c21 100644
--- a/Kernel/vfs/io.c
+++ b/Kernel/vfs/io.c
@@ -2,22 +2,11 @@
  * AcessMicro VFS
  * - File IO Passthru's
  */
+#define DEBUG	0
 #include <acess.h>
 #include "vfs.h"
 #include "vfs_int.h"
 
-#define DEBUG	0
-
-#if DEBUG
-#else
-# undef ENTER
-# undef LOG
-# undef LEAVE
-# define ENTER(...)
-# define LOG(...)
-# define LEAVE(...)
-#endif
-
 // === CODE ===
 /**
  * \fn Uint64 VFS_Read(int FD, Uint64 Length, void *Buffer)
@@ -31,23 +20,15 @@ Uint64 VFS_Read(int FD, Uint64 Length, void *Buffer)
 	ENTER("iFD XLength pBuffer", FD, Length, Buffer);
 	
 	h = VFS_GetHandle(FD);
-	if(!h)	return -1;
+	if(!h)	LEAVE_RET('i', -1);
 	
-	if( !(h->Mode & VFS_OPENFLAG_READ) || h->Node->Flags & VFS_FFLAG_DIRECTORY ) {
-		LEAVE('i', -1);
-		return -1;
-	}
+	if( !(h->Mode & VFS_OPENFLAG_READ) || h->Node->Flags & VFS_FFLAG_DIRECTORY )
+		LEAVE_RET('i', -1);
 
-	if(!h->Node->Read) {
-		LEAVE('i', 0);
-		return 0;
-	}
+	if(!h->Node->Read)	LEAVE_RET('i', 0);
 	
 	ret = h->Node->Read(h->Node, h->Position, Length, Buffer);
-	if(ret == -1) {
-		LEAVE('i', -1);
-		return -1;
-	}
+	if(ret == -1)	LEAVE_RET('i', -1);
 	
 	h->Position += ret;
 	LEAVE('X', ret);
@@ -79,10 +60,10 @@ Uint64 VFS_ReadAt(int FD, Uint64 Offset, Uint64 Length, void *Buffer)
 }
 
 /**
- * \fn Uint64 VFS_Write(int FD, Uint64 Length, void *Buffer)
+ * \fn Uint64 VFS_Write(int FD, Uint64 Length, const void *Buffer)
  * \brief Read data from a node (file)
  */
-Uint64 VFS_Write(int FD, Uint64 Length, void *Buffer)
+Uint64 VFS_Write(int FD, Uint64 Length, const void *Buffer)
 {
 	tVFS_Handle	*h;
 	Uint64	ret;
@@ -95,17 +76,18 @@ Uint64 VFS_Write(int FD, Uint64 Length, void *Buffer)
 
 	if(!h->Node->Write)	return 0;
 	
-	ret = h->Node->Write(h->Node, h->Position, Length, Buffer);
+	// TODO: This is a hack, I need to change VFS_Node to have "const void*"
+	ret = h->Node->Write(h->Node, h->Position, Length, (void*)Buffer);
 	if(ret == -1)	return -1;
 	h->Position += ret;
 	return ret;
 }
 
 /**
- * \fn Uint64 VFS_WriteAt(int FD, Uint64 Offset, Uint64 Length, void *Buffer)
- * \brief Write data to a file at a given offset (atomic)
+ * \fn Uint64 VFS_WriteAt(int FD, Uint64 Offset, Uint64 Length, const void *Buffer)
+ * \brief Write data to a file at a given offset
  */
-Uint64 VFS_WriteAt(int FD, Uint64 Offset, Uint64 Length, void *Buffer)
+Uint64 VFS_WriteAt(int FD, Uint64 Offset, Uint64 Length, const void *Buffer)
 {
 	tVFS_Handle	*h;
 	Uint64	ret;
@@ -117,7 +99,8 @@ Uint64 VFS_WriteAt(int FD, Uint64 Offset, Uint64 Length, void *Buffer)
 	if( h->Node->Flags & VFS_FFLAG_DIRECTORY )	return -1;
 
 	if(!h->Node->Write)	return 0;
-	ret = h->Node->Write(h->Node, Offset, Length, Buffer);
+	// TODO: This is a hack, I need to change VFS_Node to have "const void*"
+	ret = h->Node->Write(h->Node, Offset, Length, (void*)Buffer);
 	if(ret == -1)	return -1;
 	return ret;
 }
@@ -150,6 +133,9 @@ int VFS_Seek(int FD, Sint64 Offset, int Whence)
 	h = VFS_GetHandle(FD);
 	if(!h)	return -1;
 	
+	//Log_Debug("VFS", "VFS_Seek: (fd=0x%x, Offset=0x%llx, Whence=%i)",
+	//	FD, Offset, Whence);
+	
 	// Set relative to current position
 	if(Whence == 0) {
 		h->Position += Offset;
@@ -158,6 +144,8 @@ int VFS_Seek(int FD, Sint64 Offset, int Whence)
 	
 	// Set relative to end of file
 	if(Whence < 0) {
+		if( h->Node->Size == -1 )	return -1;
+
 		h->Position = h->Node->Size - Offset;
 		return 0;
 	}