static int
efifs_readdir(struct open_file *f, struct dirent *d)
{
EFI_FILE *file = f->f_fsdata;
union fileinfo fi;
EFI_STATUS status;
UINTN sz;
int i;
if (file == NULL)
return (EBADF);
sz = sizeof(fi);
status = file->Read(file, &sz, &fi);
if (EFI_ERROR(status))
return (efi_status_to_errno(status));
if (sz == 0)
return (ENOENT);
d->d_fileno = 0;
d->d_reclen = sizeof(*d);
if (fi.info.Attribute & EFI_FILE_DIRECTORY)
d->d_type = DT_DIR;
else
d->d_type = DT_REG;
for (i = 0; fi.info.FileName[i] != 0; i++)
d->d_name[i] = fi.info.FileName[i];
d->d_name[i] = 0;
d->d_namlen = i;
return (0);
}
EFI_STATUS readFile(
IN EFI_FILE *dir,
IN INT32 index,
IN EFI_SYSTEM_TABLE *systab,
IN VOID *buf
)
{
EFI_STATUS status;
EFI_FILE *file;
CHAR16 filename[10]; // Allow up to 9999 stories (Probably going to have to increase buffer size when this engine gets super popular :)
INT32 index
tostring(index, filename);
Status=dir->Open(dir, &file, filename, EFI_FILE_MODE_READ, EFI_FILE_READ_ONLY); // open the file
EFI_FILE_INFO *fileinfo;
UINTN infosize = SIZE_OF_EFI_FILE_INFO;
EFI_GUID info_type = EFI_FILE_INFO_ID;
status = file->GetInfo(file, &info_type, &infosize, NULL); // get the info size of file
systab->BootServices->AllocatePool(AllocateAnyPages, infosize, (VOID **)&fileinfo);
status=file->GetInfo(file, &info_type, &infosize, fileinfo); // get info of file
UINTN filesize = fileinfo->FileSize; // get filesize from info
systab->BootServices->AllocatePool(AllocateAnyPages, filesize, (VOID **)&buf); // Allocate some room
status=file->Read(file, &filesize, buf);
systab->BootServices->FreePool(buf);
systab->BootServices->FreePool(fileinfo);
return EFI_SUCCESS;
}
static int
efifs_read(struct open_file *f, void *buf, size_t size, size_t *resid)
{
EFI_FILE *file = f->f_fsdata;
EFI_STATUS status;
UINTN sz = size;
char *bufp;
if (file == NULL)
return (EBADF);
bufp = buf;
while (size > 0) {
sz = size;
if (sz > EFI_BLOCK_SIZE)
sz = EFI_BLOCK_SIZE;
status = file->Read(file, &sz, bufp);
if (EFI_ERROR(status))
return (efi_status_to_errno(status));
if (sz == 0)
break;
size -= sz;
bufp += sz;
}
if (resid)
*resid = size;
return (0);
}