diff options
Diffstat (limited to 'lib/efi_loader/efi_file.c')
| -rw-r--r-- | lib/efi_loader/efi_file.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/lib/efi_loader/efi_file.c b/lib/efi_loader/efi_file.c index 8ece8e71ee1..204105e25af 100644 --- a/lib/efi_loader/efi_file.c +++ b/lib/efi_loader/efi_file.c @@ -409,6 +409,45 @@ static efi_status_t efi_get_file_size(struct file_handle *fh, return EFI_SUCCESS; } +/** + * efi_file_size() - Get the size of a file using an EFI file handle + * + * @fh: EFI file handle + * @size: buffer to fill in the discovered size + * + * Return: size of the file + */ +efi_status_t efi_file_size(struct efi_file_handle *fh, efi_uintn_t *size) +{ + struct efi_file_info *info = NULL; + efi_uintn_t bs = 0; + efi_status_t ret; + + *size = 0; + ret = EFI_CALL(fh->getinfo(fh, (efi_guid_t *)&efi_file_info_guid, &bs, + info)); + if (ret != EFI_BUFFER_TOO_SMALL) { + ret = EFI_DEVICE_ERROR; + goto out; + } + + info = malloc(bs); + if (!info) { + ret = EFI_OUT_OF_RESOURCES; + goto out; + } + ret = EFI_CALL(fh->getinfo(fh, (efi_guid_t *)&efi_file_info_guid, &bs, + info)); + if (ret != EFI_SUCCESS) + goto out; + + *size = info->file_size; + +out: + free(info); + return ret; +} + static efi_status_t file_read(struct file_handle *fh, u64 *buffer_size, void *buffer) { |