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Stub update RomFS

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wheremyfoodat 2023-08-20 02:38:25 +03:00
parent 8a435cc36b
commit e5f96b7298
1 changed files with 23 additions and 7 deletions
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30
src/core/fs/archive_self_ncch.cpp
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@ -5,7 +5,8 @@
namespace PathType {
enum : u32 {
RomFS = 0,
ExeFS = 2
ExeFS = 2,
UpdateRomFS = 5,
};
};
@ -33,8 +34,8 @@ FileDescriptor SelfNCCHArchive::openFile(const FSPath& path, const FilePerms& pe
// Where to read the file from. (https://www.3dbrew.org/wiki/Filesystem_services#SelfNCCH_File_Path_Data_Format)
// We currently only know how to read from an NCCH's RomFS, ie type = 0
const u32 type = *(u32*)&path.binary[0]; // TODO: Get rid of UB here
if (type != PathType::RomFS && type != PathType::ExeFS) {
Helpers::panic("Read from NCCH's non-RomFS & non-exeFS section!");
if (type != PathType::RomFS && type != PathType::ExeFS && type != PathType::UpdateRomFS) {
Helpers::panic("Read from NCCH's non-RomFS & non-exeFS section! Path type: %d", type);
}
return NoFile; // No file descriptor needed for RomFS
@ -50,8 +51,8 @@ Rust::Result<ArchiveBase*, HorizonResult> SelfNCCHArchive::openArchive(const FSP
}
std::optional<u32> SelfNCCHArchive::readFile(FileSession* file, u64 offset, u32 size, u32 dataPointer) {
const FSPath& path = file->path; // Path of the file
const u32 type = *(u32*)&path.binary[0]; // Type of the path
const FSPath& path = file->path; // Path of the file
const u32 type = *(u32*)&path.binary[0]; // Type of the path
if (type == PathType::RomFS && !hasRomFS()) {
Helpers::panic("Tried to read file from non-existent RomFS");
@ -98,8 +99,23 @@ std::optional<u32> SelfNCCHArchive::readFile(FileSession* file, u64 offset, u32
break;
}
default:
Helpers::panic("Unimplemented file path type for SelfNCCH archive");
// Normally, the update RomFS should overlay the cartridge RomFS when reading from this and an update is installed.
// So to support updates, we need to perform this overlaying. For now, read from the cartridge RomFS.
case PathType::UpdateRomFS: {
Helpers::warn("Reading from update RomFS but updates are currently not supported! Reading from regular RomFS instead\n");
const u64 romFSSize = cxi->romFS.size;
const u64 romFSOffset = cxi->romFS.offset;
if ((offset >> 32) || (offset >= romFSSize) || (offset + size >= romFSSize)) {
Helpers::panic("Tried to read from SelfNCCH with too big of an offset");
}
fsInfo = cxi->romFS;
offset += 0x1000;
break;
}
default: Helpers::panic("Unimplemented file path type for SelfNCCH archive");
}
std::unique_ptr<u8[]> data(new u8[size]);