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Merge pull request #1423 from DarkLordZach/romfs-file-exts

fsmitm_romfsbuild: Add support for stubbing and IPS patches in LFS
This commit is contained in:
bunnei 2018-10-08 12:31:27 -04:00 committed by GitHub
commit 561d79e034
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GPG key ID: 4AEE18F83AFDEB23
5 changed files with 38 additions and 10 deletions

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@ -26,6 +26,7 @@
#include "common/alignment.h"
#include "common/assert.h"
#include "core/file_sys/fsmitm_romfsbuild.h"
#include "core/file_sys/ips_layer.h"
#include "core/file_sys/vfs.h"
#include "core/file_sys/vfs_vector.h"
@ -123,7 +124,7 @@ static u64 romfs_get_hash_table_count(u64 num_entries) {
return count;
}
void RomFSBuildContext::VisitDirectory(VirtualDir root_romfs,
void RomFSBuildContext::VisitDirectory(VirtualDir root_romfs, VirtualDir ext,
std::shared_ptr<RomFSBuildDirectoryContext> parent) {
std::vector<std::shared_ptr<RomFSBuildDirectoryContext>> child_dirs;
@ -144,6 +145,9 @@ void RomFSBuildContext::VisitDirectory(VirtualDir root_romfs,
child->path_len = child->cur_path_ofs + static_cast<u32>(kv.first.size());
child->path = parent->path + "/" + kv.first;
if (ext != nullptr && ext->GetFileRelative(child->path + ".stub") != nullptr)
continue;
// Sanity check on path_len
ASSERT(child->path_len < FS_MAX_PATH);
@ -157,11 +161,24 @@ void RomFSBuildContext::VisitDirectory(VirtualDir root_romfs,
child->path_len = child->cur_path_ofs + static_cast<u32>(kv.first.size());
child->path = parent->path + "/" + kv.first;
if (ext != nullptr && ext->GetFileRelative(child->path + ".stub") != nullptr)
continue;
// Sanity check on path_len
ASSERT(child->path_len < FS_MAX_PATH);
child->source = root_romfs->GetFileRelative(child->path);
if (ext != nullptr) {
const auto ips = ext->GetFileRelative(child->path + ".ips");
if (ips != nullptr) {
auto patched = PatchIPS(child->source, ips);
if (patched != nullptr)
child->source = std::move(patched);
}
}
child->size = child->source->GetSize();
AddFile(parent, child);
@ -169,7 +186,7 @@ void RomFSBuildContext::VisitDirectory(VirtualDir root_romfs,
}
for (auto& child : child_dirs) {
this->VisitDirectory(root_romfs, child);
this->VisitDirectory(root_romfs, ext, child);
}
}
@ -208,14 +225,15 @@ bool RomFSBuildContext::AddFile(std::shared_ptr<RomFSBuildDirectoryContext> pare
return true;
}
RomFSBuildContext::RomFSBuildContext(VirtualDir base_) : base(std::move(base_)) {
RomFSBuildContext::RomFSBuildContext(VirtualDir base_, VirtualDir ext_)
: base(std::move(base_)), ext(std::move(ext_)) {
root = std::make_shared<RomFSBuildDirectoryContext>();
root->path = "\0";
directories.emplace(root->path, root);
num_dirs = 1;
dir_table_size = 0x18;
VisitDirectory(base, root);
VisitDirectory(base, ext, root);
}
RomFSBuildContext::~RomFSBuildContext() = default;

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@ -40,7 +40,7 @@ struct RomFSFileEntry;
class RomFSBuildContext {
public:
explicit RomFSBuildContext(VirtualDir base);
explicit RomFSBuildContext(VirtualDir base, VirtualDir ext = nullptr);
~RomFSBuildContext();
// This finalizes the context.
@ -48,6 +48,7 @@ public:
private:
VirtualDir base;
VirtualDir ext;
std::shared_ptr<RomFSBuildDirectoryContext> root;
std::map<std::string, std::shared_ptr<RomFSBuildDirectoryContext>, std::less<>> directories;
std::map<std::string, std::shared_ptr<RomFSBuildFileContext>, std::less<>> files;
@ -59,7 +60,8 @@ private:
u64 file_hash_table_size = 0;
u64 file_partition_size = 0;
void VisitDirectory(VirtualDir filesys, std::shared_ptr<RomFSBuildDirectoryContext> parent);
void VisitDirectory(VirtualDir filesys, VirtualDir ext,
std::shared_ptr<RomFSBuildDirectoryContext> parent);
bool AddDirectory(std::shared_ptr<RomFSBuildDirectoryContext> parent_dir_ctx,
std::shared_ptr<RomFSBuildDirectoryContext> dir_ctx);

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@ -182,11 +182,17 @@ static void ApplyLayeredFS(VirtualFile& romfs, u64 title_id, ContentRecordType t
[](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });
std::vector<VirtualDir> layers;
std::vector<VirtualDir> layers_ext;
layers.reserve(patch_dirs.size() + 1);
layers_ext.reserve(patch_dirs.size() + 1);
for (const auto& subdir : patch_dirs) {
auto romfs_dir = subdir->GetSubdirectory("romfs");
if (romfs_dir != nullptr)
layers.push_back(std::move(romfs_dir));
auto ext_dir = subdir->GetSubdirectory("romfs_ext");
if (ext_dir != nullptr)
layers_ext.push_back(std::move(ext_dir));
}
layers.push_back(std::move(extracted));
@ -195,7 +201,9 @@ static void ApplyLayeredFS(VirtualFile& romfs, u64 title_id, ContentRecordType t
return;
}
auto packed = CreateRomFS(std::move(layered));
auto layered_ext = LayeredVfsDirectory::MakeLayeredDirectory(std::move(layers_ext));
auto packed = CreateRomFS(std::move(layered), std::move(layered_ext));
if (packed == nullptr) {
return;
}

View file

@ -129,11 +129,11 @@ VirtualDir ExtractRomFS(VirtualFile file, RomFSExtractionType type) {
return out;
}
VirtualFile CreateRomFS(VirtualDir dir) {
VirtualFile CreateRomFS(VirtualDir dir, VirtualDir ext) {
if (dir == nullptr)
return nullptr;
RomFSBuildContext ctx{dir};
RomFSBuildContext ctx{dir, ext};
return ConcatenatedVfsFile::MakeConcatenatedFile(0, ctx.Build(), dir->GetName());
}

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@ -44,6 +44,6 @@ VirtualDir ExtractRomFS(VirtualFile file,
// Converts a VFS filesystem into a RomFS binary
// Returns nullptr on failure
VirtualFile CreateRomFS(VirtualDir dir);
VirtualFile CreateRomFS(VirtualDir dir, VirtualDir ext = nullptr);
} // namespace FileSys