EFI_STATUS EFIAPI fsw_efi_FileSystem_OpenVolume(IN EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *This,
OUT EFI_FILE **Root)
{
EFI_STATUS Status;
FSW_VOLUME_DATA *Volume = FSW_VOLUME_FROM_VOL_INTERFACE(This);
FSW_MSG_DEBUG((FSW_MSGSTR(__FUNCTION__ ": enter\n")));
Status = fsw_efi_dnode_to_FileHandle(Volume->vol->root, Root);
FSW_MSG_DEBUG((FSW_MSGSTR(__FUNCTION__ ": leaving with %r\n"), Status));
return Status;
}
EFI_STATUS EFIAPI fsw_efi_FileSystem_OpenVolume(IN EFI_FILE_IO_INTERFACE *This,
OUT EFI_FILE_PROTOCOL **Root)
{
EFI_STATUS Status;
FSW_VOLUME_DATA *Volume = FSW_VOLUME_FROM_FILE_SYSTEM(This);
#if DEBUG_LEVEL
// Print(L"fsw_efi_FileSystem_OpenVolume\n");
#endif
Status = fsw_efi_dnode_to_FileHandle(Volume->vol->root, Root);
return Status;
}
EFI_STATUS fsw_efi_dir_open(IN FSW_FILE_DATA *File,
OUT EFI_FILE_PROTOCOL **NewHandle,
IN CHAR16 *FileName,
IN UINT64 OpenMode,
IN UINT64 Attributes)
{
EFI_STATUS Status;
FSW_VOLUME_DATA *Volume = (FSW_VOLUME_DATA *)File->shand.dnode->vol->host_data;
struct fsw_dnode *dno;
struct fsw_dnode *target_dno;
struct fsw_string lookup_path;
#if DEBUG_LEVEL
Print(L"fsw_efi_dir_open: '%s'\n", FileName);
#endif
if (OpenMode != EFI_FILE_MODE_READ)
return EFI_WRITE_PROTECTED;
lookup_path.type = FSW_STRING_TYPE_UTF16;
lookup_path.len = (int)StrLen(FileName);
lookup_path.size = lookup_path.len * sizeof(fsw_u16);
lookup_path.data = FileName;
// resolve the path (symlinks along the way are automatically resolved)
Status = fsw_efi_map_status(fsw_dnode_lookup_path(File->shand.dnode,
&lookup_path, '\\',
&dno),
Volume);
if (EFI_ERROR(Status))
return Status;
// if the final node is a symlink, also resolve it
Status = fsw_efi_map_status(fsw_dnode_resolve(dno, &target_dno),
Volume);
fsw_dnode_release(dno);
if (EFI_ERROR(Status))
return Status;
dno = target_dno;
// make a new EFI handle for the target dnode
Status = fsw_efi_dnode_to_FileHandle(dno, NewHandle);
fsw_dnode_release(dno);
return Status;
}
