* AcessMicro VFS
* - File IO Passthru's
*/
-#include <common.h>
+#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)
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);
}
/**
- * \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;
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;
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;
}
}
/**
- * \fn int VFS_Seek(int FD, Sint64 Distance, int Whence)
+ * \fn int VFS_Seek(int FD, Sint64 Offset, int Whence)
* \brief Seek to a new location
* \param FD File descriptor
- * \param Distance Where to go
+ * \param Offset Where to go
* \param Whence From where
*/
-int VFS_Seek(int FD, Sint64 Distance, int Whence)
+int VFS_Seek(int FD, Sint64 Offset, int Whence)
{
tVFS_Handle *h;
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 += Distance;
+ h->Position += Offset;
return 0;
}
// Set relative to end of file
if(Whence < 0) {
- h->Position = h->Node->Size - Distance;
+ if( h->Node->Size == -1 ) return -1;
+
+ h->Position = h->Node->Size - Offset;
return 0;
}
// Set relative to start of file
- h->Position = Distance;
+ h->Position = Offset;
return 0;
}
/**
* \fn int VFS_IOCtl(int FD, int ID, void *Buffer)
+ * \brief Call an IO Control on a file
*/
int VFS_IOCtl(int FD, int ID, void *Buffer)
{
if(!h->Node->IOCtl) return -1;
return h->Node->IOCtl(h->Node, ID, Buffer);
}
+
+/**
+ * \fn int VFS_FInfo(int FD, tFInfo *Dest, int MaxACLs)
+ * \brief Retrieve file information
+ * \return Number of ACLs stored
+ */
+int VFS_FInfo(int FD, tFInfo *Dest, int MaxACLs)
+{
+ tVFS_Handle *h;
+ int max;
+
+ h = VFS_GetHandle(FD);
+ if(!h) return -1;
+
+ Dest->uid = h->Node->UID;
+ Dest->gid = h->Node->GID;
+ Dest->size = h->Node->Size;
+ Dest->atime = h->Node->ATime;
+ Dest->ctime = h->Node->MTime;
+ Dest->mtime = h->Node->CTime;
+ Dest->numacls = h->Node->NumACLs;
+
+ Dest->flags = 0;
+ if(h->Node->Flags & VFS_FFLAG_DIRECTORY) Dest->flags |= 0x10;
+ if(h->Node->Flags & VFS_FFLAG_SYMLINK) Dest->flags |= 0x20;
+
+ max = (MaxACLs < h->Node->NumACLs) ? MaxACLs : h->Node->NumACLs;
+ memcpy(&Dest->acls, h->Node->ACLs, max*sizeof(tVFS_ACL));
+
+ return max;
+}
+
+// === EXPORTS ===
+EXPORT(VFS_Read);
+EXPORT(VFS_Write);
+EXPORT(VFS_ReadAt);
+EXPORT(VFS_WriteAt);
+EXPORT(VFS_IOCtl);
+EXPORT(VFS_Seek);
+EXPORT(VFS_Tell);