O_RDWR                        = 0x2
	O_RSYNC                       = 0x8000
	O_SEARCH                      = 0x200000
	O_SIOCGIFCONF                 = -0x3ff796ec
	O_SIOCGLIFCONF                = -0x3fef9688
	O_SYNC                        = 0x10
	O_TRUNC                       = 0x200
	O_WRONLY                      = 0x1
	O_XATTR                       = 0x4000
	PARENB                        = 0x100

				return h, e
			}
		}
	}
	if createmode == OPEN_EXISTING && access == GENERIC_READ {
		// Necessary for opening directory handles.
		attrs |= FILE_FLAG_BACKUP_SEMANTICS
	}
	if mode&O_SYNC != 0 {
		const _FILE_FLAG_WRITE_THROUGH = 0x80000000
		attrs |= _FILE_FLAG_WRITE_THROUGH
	}
	return CreateFile(pathp, access, sharemode, sa, createmode, attrs, 0)
}

		t.Fatal(err)
	}

	// 4) Streaming bitrot check on corrupted file
	filePath := pathJoin(storage.String(), volName, fileName)
	f, err := os.OpenFile(filePath, os.O_WRONLY|os.O_SYNC, 0o644)
	if err != nil {
		t.Fatal(err)
	}
	// Replace first 256 with 'a'.
	if _, err := f.WriteString(strings.Repeat("a", 256)); err != nil {
		t.Fatal(err)
	}
	f.Close()