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FS: Updated the Directory Entry structure to match the Switch.

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Subv
2018-03-19 22:58:55 -05:00
parent fc44261dd1
commit a9ba2c2000
5 changed files with 84 additions and 30 deletions
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37
src/core/file_sys/directory.h
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@ -6,34 +6,28 @@
#include <array>
#include <cstddef>
#include "common/common_funcs.h"
#include "common/common_types.h"
#include "core/file_sys/filesystem.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace
namespace FileSys {
// Structure of a directory entry, from http://3dbrew.org/wiki/FSDir:Read#Entry_format
const size_t FILENAME_LENGTH = 0x20C / 2;
// Structure of a directory entry, from
// http://switchbrew.org/index.php?title=Filesystem_services#DirectoryEntry
const size_t FILENAME_LENGTH = 0x300;
struct Entry {
char16_t filename[FILENAME_LENGTH]; // Entry name (UTF-16, null-terminated)
std::array<char, 9> short_name; // 8.3 file name ('longfilename' -> 'LONGFI~1', null-terminated)
char unknown1; // unknown (observed values: 0x0A, 0x70, 0xFD)
std::array<char, 4>
extension; // 8.3 file extension (set to spaces for directories, null-terminated)
char unknown2; // unknown (always 0x01)
char unknown3; // unknown (0x00 or 0x08)
char is_directory; // directory flag
char is_hidden; // hidden flag
char is_archive; // archive flag
char is_read_only; // read-only flag
u64 file_size; // file size (for files only)
char filename[FILENAME_LENGTH];
INSERT_PADDING_BYTES(4);
EntryType type;
INSERT_PADDING_BYTES(3);
u64 file_size;
};
static_assert(sizeof(Entry) == 0x228, "Directory Entry struct isn't exactly 0x228 bytes long!");
static_assert(offsetof(Entry, short_name) == 0x20C, "Wrong offset for short_name in Entry.");
static_assert(offsetof(Entry, extension) == 0x216, "Wrong offset for extension in Entry.");
static_assert(offsetof(Entry, is_archive) == 0x21E, "Wrong offset for is_archive in Entry.");
static_assert(offsetof(Entry, file_size) == 0x220, "Wrong offset for file_size in Entry.");
static_assert(sizeof(Entry) == 0x310, "Directory Entry struct isn't exactly 0x310 bytes long!");
static_assert(offsetof(Entry, type) == 0x304, "Wrong offset for type in Entry.");
static_assert(offsetof(Entry, file_size) == 0x308, "Wrong offset for file_size in Entry.");
class DirectoryBackend : NonCopyable {
public:
@ -46,7 +40,10 @@ public:
* @param entries Buffer to read data into
* @return Number of entries listed
*/
virtual u32 Read(const u32 count, Entry* entries) = 0;
virtual u64 Read(const u64 count, Entry* entries) = 0;
/// Returns the number of entries still left to read.
virtual u64 GetEntryCount() const = 0;
/**
* Close the directory