common/fileutil: Convert namespace to Common::FS

Migrates a remaining common file over to the Common namespace, making it
consistent with the rest of common files.

This also allows for high-traffic FS related code to alias the
filesystem function namespace as

namespace FS = Common::FS;

for more concise typing.

7 files changed, 130 insertions, 119 deletions

diff --git a/src/core/file_sys/bis_factory.cpp b/src/core/file_sys/bis_factory.cpp
index 285277ef8..9ffda2e14 100644
--- a/src/core/file_sys/bis_factory.cpp
+++ b/src/core/file_sys/bis_factory.cpp
@@ -86,7 +86,7 @@ VirtualFile BISFactory::OpenPartitionStorage(BisPartitionId id) const {
     auto& keys = Core::Crypto::KeyManager::Instance();
     Core::Crypto::PartitionDataManager pdm{
         Core::System::GetInstance().GetFilesystem()->OpenDirectory(
-            FileUtil::GetUserPath(FileUtil::UserPath::SysDataDir), Mode::Read)};
+            Common::FS::GetUserPath(Common::FS::UserPath::SysDataDir), Mode::Read)};
     keys.PopulateFromPartitionData(pdm);
 
     switch (id) {
diff --git a/src/core/file_sys/registered_cache.cpp b/src/core/file_sys/registered_cache.cpp
index f831487dd..e42b677f7 100644
--- a/src/core/file_sys/registered_cache.cpp
+++ b/src/core/file_sys/registered_cache.cpp
@@ -728,7 +728,7 @@ InstallResult RegisteredCache::RawInstallNCA(const NCA& nca, const VfsCopyFuncti
         LOG_WARNING(Loader, "Overwriting existing NCA...");
         VirtualDir c_dir;
         { c_dir = dir->GetFileRelative(path)->GetContainingDirectory(); }
-        c_dir->DeleteFile(FileUtil::GetFilename(path));
+        c_dir->DeleteFile(Common::FS::GetFilename(path));
     }
 
     auto out = dir->CreateFileRelative(path);
diff --git a/src/core/file_sys/vfs.cpp b/src/core/file_sys/vfs.cpp
index e33327ef0..a4c3f67c4 100644
--- a/src/core/file_sys/vfs.cpp
+++ b/src/core/file_sys/vfs.cpp
@@ -30,7 +30,7 @@ bool VfsFilesystem::IsWritable() const {
 }
 
 VfsEntryType VfsFilesystem::GetEntryType(std::string_view path_) const {
-    const auto path = FileUtil::SanitizePath(path_);
+    const auto path = Common::FS::SanitizePath(path_);
     if (root->GetFileRelative(path) != nullptr)
         return VfsEntryType::File;
     if (root->GetDirectoryRelative(path) != nullptr)
@@ -40,22 +40,22 @@ VfsEntryType VfsFilesystem::GetEntryType(std::string_view path_) const {
 }
 
 VirtualFile VfsFilesystem::OpenFile(std::string_view path_, Mode perms) {
-    const auto path = FileUtil::SanitizePath(path_);
+    const auto path = Common::FS::SanitizePath(path_);
     return root->GetFileRelative(path);
 }
 
 VirtualFile VfsFilesystem::CreateFile(std::string_view path_, Mode perms) {
-    const auto path = FileUtil::SanitizePath(path_);
+    const auto path = Common::FS::SanitizePath(path_);
     return root->CreateFileRelative(path);
 }
 
 VirtualFile VfsFilesystem::CopyFile(std::string_view old_path_, std::string_view new_path_) {
-    const auto old_path = FileUtil::SanitizePath(old_path_);
-    const auto new_path = FileUtil::SanitizePath(new_path_);
+    const auto old_path = Common::FS::SanitizePath(old_path_);
+    const auto new_path = Common::FS::SanitizePath(new_path_);
 
     // VfsDirectory impls are only required to implement copy across the current directory.
-    if (FileUtil::GetParentPath(old_path) == FileUtil::GetParentPath(new_path)) {
-        if (!root->Copy(FileUtil::GetFilename(old_path), FileUtil::GetFilename(new_path)))
+    if (Common::FS::GetParentPath(old_path) == Common::FS::GetParentPath(new_path)) {
+        if (!root->Copy(Common::FS::GetFilename(old_path), Common::FS::GetFilename(new_path)))
             return nullptr;
         return OpenFile(new_path, Mode::ReadWrite);
     }
@@ -76,8 +76,8 @@ VirtualFile VfsFilesystem::CopyFile(std::string_view old_path_, std::string_view
 }
 
 VirtualFile VfsFilesystem::MoveFile(std::string_view old_path, std::string_view new_path) {
-    const auto sanitized_old_path = FileUtil::SanitizePath(old_path);
-    const auto sanitized_new_path = FileUtil::SanitizePath(new_path);
+    const auto sanitized_old_path = Common::FS::SanitizePath(old_path);
+    const auto sanitized_new_path = Common::FS::SanitizePath(new_path);
 
     // Again, non-default impls are highly encouraged to provide a more optimized version of this.
     auto out = CopyFile(sanitized_old_path, sanitized_new_path);
@@ -89,26 +89,26 @@ VirtualFile VfsFilesystem::MoveFile(std::string_view old_path, std::string_view
 }
 
 bool VfsFilesystem::DeleteFile(std::string_view path_) {
-    const auto path = FileUtil::SanitizePath(path_);
-    auto parent = OpenDirectory(FileUtil::GetParentPath(path), Mode::Write);
+    const auto path = Common::FS::SanitizePath(path_);
+    auto parent = OpenDirectory(Common::FS::GetParentPath(path), Mode::Write);
     if (parent == nullptr)
         return false;
-    return parent->DeleteFile(FileUtil::GetFilename(path));
+    return parent->DeleteFile(Common::FS::GetFilename(path));
 }
 
 VirtualDir VfsFilesystem::OpenDirectory(std::string_view path_, Mode perms) {
-    const auto path = FileUtil::SanitizePath(path_);
+    const auto path = Common::FS::SanitizePath(path_);
     return root->GetDirectoryRelative(path);
 }
 
 VirtualDir VfsFilesystem::CreateDirectory(std::string_view path_, Mode perms) {
-    const auto path = FileUtil::SanitizePath(path_);
+    const auto path = Common::FS::SanitizePath(path_);
     return root->CreateDirectoryRelative(path);
 }
 
 VirtualDir VfsFilesystem::CopyDirectory(std::string_view old_path_, std::string_view new_path_) {
-    const auto old_path = FileUtil::SanitizePath(old_path_);
-    const auto new_path = FileUtil::SanitizePath(new_path_);
+    const auto old_path = Common::FS::SanitizePath(old_path_);
+    const auto new_path = Common::FS::SanitizePath(new_path_);
 
     // Non-default impls are highly encouraged to provide a more optimized version of this.
     auto old_dir = OpenDirectory(old_path, Mode::Read);
@@ -139,8 +139,8 @@ VirtualDir VfsFilesystem::CopyDirectory(std::string_view old_path_, std::string_
 }
 
 VirtualDir VfsFilesystem::MoveDirectory(std::string_view old_path, std::string_view new_path) {
-    const auto sanitized_old_path = FileUtil::SanitizePath(old_path);
-    const auto sanitized_new_path = FileUtil::SanitizePath(new_path);
+    const auto sanitized_old_path = Common::FS::SanitizePath(old_path);
+    const auto sanitized_new_path = Common::FS::SanitizePath(new_path);
 
     // Non-default impls are highly encouraged to provide a more optimized version of this.
     auto out = CopyDirectory(sanitized_old_path, sanitized_new_path);
@@ -152,17 +152,17 @@ VirtualDir VfsFilesystem::MoveDirectory(std::string_view old_path, std::string_v
 }
 
 bool VfsFilesystem::DeleteDirectory(std::string_view path_) {
-    const auto path = FileUtil::SanitizePath(path_);
-    auto parent = OpenDirectory(FileUtil::GetParentPath(path), Mode::Write);
+    const auto path = Common::FS::SanitizePath(path_);
+    auto parent = OpenDirectory(Common::FS::GetParentPath(path), Mode::Write);
     if (parent == nullptr)
         return false;
-    return parent->DeleteSubdirectoryRecursive(FileUtil::GetFilename(path));
+    return parent->DeleteSubdirectoryRecursive(Common::FS::GetFilename(path));
 }
 
 VfsFile::~VfsFile() = default;
 
 std::string VfsFile::GetExtension() const {
-    return std::string(FileUtil::GetExtensionFromFilename(GetName()));
+    return std::string(Common::FS::GetExtensionFromFilename(GetName()));
 }
 
 VfsDirectory::~VfsDirectory() = default;
@@ -203,7 +203,7 @@ std::string VfsFile::GetFullPath() const {
 }
 
 std::shared_ptr<VfsFile> VfsDirectory::GetFileRelative(std::string_view path) const {
-    auto vec = FileUtil::SplitPathComponents(path);
+    auto vec = Common::FS::SplitPathComponents(path);
     vec.erase(std::remove_if(vec.begin(), vec.end(), [](const auto& str) { return str.empty(); }),
               vec.end());
     if (vec.empty()) {
@@ -239,7 +239,7 @@ std::shared_ptr<VfsFile> VfsDirectory::GetFileAbsolute(std::string_view path) co
 }
 
 std::shared_ptr<VfsDirectory> VfsDirectory::GetDirectoryRelative(std::string_view path) const {
-    auto vec = FileUtil::SplitPathComponents(path);
+    auto vec = Common::FS::SplitPathComponents(path);
     vec.erase(std::remove_if(vec.begin(), vec.end(), [](const auto& str) { return str.empty(); }),
               vec.end());
     if (vec.empty()) {
@@ -301,7 +301,7 @@ std::size_t VfsDirectory::GetSize() const {
 }
 
 std::shared_ptr<VfsFile> VfsDirectory::CreateFileRelative(std::string_view path) {
-    auto vec = FileUtil::SplitPathComponents(path);
+    auto vec = Common::FS::SplitPathComponents(path);
     vec.erase(std::remove_if(vec.begin(), vec.end(), [](const auto& str) { return str.empty(); }),
               vec.end());
     if (vec.empty()) {
@@ -320,7 +320,7 @@ std::shared_ptr<VfsFile> VfsDirectory::CreateFileRelative(std::string_view path)
         }
     }
 
-    return dir->CreateFileRelative(FileUtil::GetPathWithoutTop(path));
+    return dir->CreateFileRelative(Common::FS::GetPathWithoutTop(path));
 }
 
 std::shared_ptr<VfsFile> VfsDirectory::CreateFileAbsolute(std::string_view path) {
@@ -332,7 +332,7 @@ std::shared_ptr<VfsFile> VfsDirectory::CreateFileAbsolute(std::string_view path)
 }
 
 std::shared_ptr<VfsDirectory> VfsDirectory::CreateDirectoryRelative(std::string_view path) {
-    auto vec = FileUtil::SplitPathComponents(path);
+    auto vec = Common::FS::SplitPathComponents(path);
     vec.erase(std::remove_if(vec.begin(), vec.end(), [](const auto& str) { return str.empty(); }),
               vec.end());
     if (vec.empty()) {
@@ -351,7 +351,7 @@ std::shared_ptr<VfsDirectory> VfsDirectory::CreateDirectoryRelative(std::string_
         }
     }
 
-    return dir->CreateDirectoryRelative(FileUtil::GetPathWithoutTop(path));
+    return dir->CreateDirectoryRelative(Common::FS::GetPathWithoutTop(path));
 }
 
 std::shared_ptr<VfsDirectory> VfsDirectory::CreateDirectoryAbsolute(std::string_view path) {
diff --git a/src/core/file_sys/vfs_libzip.cpp b/src/core/file_sys/vfs_libzip.cpp
index d69952940..429d7bc8b 100644
--- a/src/core/file_sys/vfs_libzip.cpp
+++ b/src/core/file_sys/vfs_libzip.cpp
@@ -49,7 +49,7 @@ VirtualDir ExtractZIP(VirtualFile file) {
             if (zip_fread(file2.get(), buf.data(), buf.size()) != s64(buf.size()))
                 return nullptr;
 
-            const auto parts = FileUtil::SplitPathComponents(stat.name);
+            const auto parts = Common::FS::SplitPathComponents(stat.name);
             const auto new_file = std::make_shared<VectorVfsFile>(buf, parts.back());
 
             std::shared_ptr<VectorVfsDirectory> dtrv = out;
diff --git a/src/core/file_sys/vfs_real.cpp b/src/core/file_sys/vfs_real.cpp
index 0db0091f6..1dbf632c1 100644
--- a/src/core/file_sys/vfs_real.cpp
+++ b/src/core/file_sys/vfs_real.cpp
@@ -14,6 +14,8 @@
 
 namespace FileSys {
 
+namespace FS = Common::FS;
+
 static std::string ModeFlagsToString(Mode mode) {
     std::string mode_str;
 
@@ -57,17 +59,19 @@ bool RealVfsFilesystem::IsWritable() const {
 }
 
 VfsEntryType RealVfsFilesystem::GetEntryType(std::string_view path_) const {
-    const auto path = FileUtil::SanitizePath(path_, FileUtil::DirectorySeparator::PlatformDefault);
-    if (!FileUtil::Exists(path))
+    const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault);
+    if (!FS::Exists(path)) {
         return VfsEntryType::None;
-    if (FileUtil::IsDirectory(path))
+    }
+    if (FS::IsDirectory(path)) {
         return VfsEntryType::Directory;
+    }
 
     return VfsEntryType::File;
 }
 
 VirtualFile RealVfsFilesystem::OpenFile(std::string_view path_, Mode perms) {
-    const auto path = FileUtil::SanitizePath(path_, FileUtil::DirectorySeparator::PlatformDefault);
+    const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault);
     if (cache.find(path) != cache.end()) {
         auto weak = cache[path];
         if (!weak.expired()) {
@@ -75,11 +79,11 @@ VirtualFile RealVfsFilesystem::OpenFile(std::string_view path_, Mode perms) {
         }
     }
 
-    if (!FileUtil::Exists(path) && True(perms & Mode::WriteAppend)) {
-        FileUtil::CreateEmptyFile(path);
+    if (!FS::Exists(path) && True(perms & Mode::WriteAppend)) {
+        FS::CreateEmptyFile(path);
     }
 
-    auto backing = std::make_shared<FileUtil::IOFile>(path, ModeFlagsToString(perms).c_str());
+    auto backing = std::make_shared<FS::IOFile>(path, ModeFlagsToString(perms).c_str());
     cache[path] = backing;
 
     // Cannot use make_shared as RealVfsFile constructor is private
@@ -87,33 +91,31 @@ VirtualFile RealVfsFilesystem::OpenFile(std::string_view path_, Mode perms) {
 }
 
 VirtualFile RealVfsFilesystem::CreateFile(std::string_view path_, Mode perms) {
-    const auto path = FileUtil::SanitizePath(path_, FileUtil::DirectorySeparator::PlatformDefault);
-    const auto path_fwd = FileUtil::SanitizePath(path, FileUtil::DirectorySeparator::ForwardSlash);
-    if (!FileUtil::Exists(path)) {
-        FileUtil::CreateFullPath(path_fwd);
-        if (!FileUtil::CreateEmptyFile(path))
+    const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault);
+    const auto path_fwd = FS::SanitizePath(path, FS::DirectorySeparator::ForwardSlash);
+    if (!FS::Exists(path)) {
+        FS::CreateFullPath(path_fwd);
+        if (!FS::CreateEmptyFile(path)) {
             return nullptr;
+        }
     }
     return OpenFile(path, perms);
 }
 
 VirtualFile RealVfsFilesystem::CopyFile(std::string_view old_path_, std::string_view new_path_) {
-    const auto old_path =
-        FileUtil::SanitizePath(old_path_, FileUtil::DirectorySeparator::PlatformDefault);
-    const auto new_path =
-        FileUtil::SanitizePath(new_path_, FileUtil::DirectorySeparator::PlatformDefault);
+    const auto old_path = FS::SanitizePath(old_path_, FS::DirectorySeparator::PlatformDefault);
+    const auto new_path = FS::SanitizePath(new_path_, FS::DirectorySeparator::PlatformDefault);
 
-    if (!FileUtil::Exists(old_path) || FileUtil::Exists(new_path) ||
-        FileUtil::IsDirectory(old_path) || !FileUtil::Copy(old_path, new_path))
+    if (!FS::Exists(old_path) || FS::Exists(new_path) || FS::IsDirectory(old_path) ||
+        !FS::Copy(old_path, new_path)) {
         return nullptr;
+    }
     return OpenFile(new_path, Mode::ReadWrite);
 }
 
 VirtualFile RealVfsFilesystem::MoveFile(std::string_view old_path_, std::string_view new_path_) {
-    const auto old_path =
-        FileUtil::SanitizePath(old_path_, FileUtil::DirectorySeparator::PlatformDefault);
-    const auto new_path =
-        FileUtil::SanitizePath(new_path_, FileUtil::DirectorySeparator::PlatformDefault);
+    const auto old_path = FS::SanitizePath(old_path_, FS::DirectorySeparator::PlatformDefault);
+    const auto new_path = FS::SanitizePath(new_path_, FS::DirectorySeparator::PlatformDefault);
 
     if (cache.find(old_path) != cache.end()) {
         auto file = cache[old_path].lock();
@@ -122,8 +124,8 @@ VirtualFile RealVfsFilesystem::MoveFile(std::string_view old_path_, std::string_
             file->Close();
         }
 
-        if (!FileUtil::Exists(old_path) || FileUtil::Exists(new_path) ||
-            FileUtil::IsDirectory(old_path) || !FileUtil::Rename(old_path, new_path)) {
+        if (!FS::Exists(old_path) || FS::Exists(new_path) || FS::IsDirectory(old_path) ||
+            !FS::Rename(old_path, new_path)) {
             return nullptr;
         }
 
@@ -139,28 +141,30 @@ VirtualFile RealVfsFilesystem::MoveFile(std::string_view old_path_, std::string_
 }
 
 bool RealVfsFilesystem::DeleteFile(std::string_view path_) {
-    const auto path = FileUtil::SanitizePath(path_, FileUtil::DirectorySeparator::PlatformDefault);
+    const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault);
     if (cache.find(path) != cache.end()) {
-        if (!cache[path].expired())
+        if (!cache[path].expired()) {
             cache[path].lock()->Close();
+        }
         cache.erase(path);
     }
-    return FileUtil::Delete(path);
+    return FS::Delete(path);
 }
 
 VirtualDir RealVfsFilesystem::OpenDirectory(std::string_view path_, Mode perms) {
-    const auto path = FileUtil::SanitizePath(path_, FileUtil::DirectorySeparator::PlatformDefault);
+    const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault);
     // Cannot use make_shared as RealVfsDirectory constructor is private
     return std::shared_ptr<RealVfsDirectory>(new RealVfsDirectory(*this, path, perms));
 }
 
 VirtualDir RealVfsFilesystem::CreateDirectory(std::string_view path_, Mode perms) {
-    const auto path = FileUtil::SanitizePath(path_, FileUtil::DirectorySeparator::PlatformDefault);
-    const auto path_fwd = FileUtil::SanitizePath(path, FileUtil::DirectorySeparator::ForwardSlash);
-    if (!FileUtil::Exists(path)) {
-        FileUtil::CreateFullPath(path_fwd);
-        if (!FileUtil::CreateDir(path))
+    const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault);
+    const auto path_fwd = FS::SanitizePath(path, FS::DirectorySeparator::ForwardSlash);
+    if (!FS::Exists(path)) {
+        FS::CreateFullPath(path_fwd);
+        if (!FS::CreateDir(path)) {
             return nullptr;
+        }
     }
     // Cannot use make_shared as RealVfsDirectory constructor is private
     return std::shared_ptr<RealVfsDirectory>(new RealVfsDirectory(*this, path, perms));
@@ -168,35 +172,33 @@ VirtualDir RealVfsFilesystem::CreateDirectory(std::string_view path_, Mode perms
 
 VirtualDir RealVfsFilesystem::CopyDirectory(std::string_view old_path_,
                                             std::string_view new_path_) {
-    const auto old_path =
-        FileUtil::SanitizePath(old_path_, FileUtil::DirectorySeparator::PlatformDefault);
-    const auto new_path =
-        FileUtil::SanitizePath(new_path_, FileUtil::DirectorySeparator::PlatformDefault);
-    if (!FileUtil::Exists(old_path) || FileUtil::Exists(new_path) ||
-        !FileUtil::IsDirectory(old_path))
+    const auto old_path = FS::SanitizePath(old_path_, FS::DirectorySeparator::PlatformDefault);
+    const auto new_path = FS::SanitizePath(new_path_, FS::DirectorySeparator::PlatformDefault);
+    if (!FS::Exists(old_path) || FS::Exists(new_path) || !FS::IsDirectory(old_path)) {
         return nullptr;
-    FileUtil::CopyDir(old_path, new_path);
+    }
+    FS::CopyDir(old_path, new_path);
     return OpenDirectory(new_path, Mode::ReadWrite);
 }
 
 VirtualDir RealVfsFilesystem::MoveDirectory(std::string_view old_path_,
                                             std::string_view new_path_) {
-    const auto old_path =
-        FileUtil::SanitizePath(old_path_, FileUtil::DirectorySeparator::PlatformDefault);
-    const auto new_path =
-        FileUtil::SanitizePath(new_path_, FileUtil::DirectorySeparator::PlatformDefault);
-    if (!FileUtil::Exists(old_path) || FileUtil::Exists(new_path) ||
-        FileUtil::IsDirectory(old_path) || !FileUtil::Rename(old_path, new_path))
+    const auto old_path = FS::SanitizePath(old_path_, FS::DirectorySeparator::PlatformDefault);
+    const auto new_path = FS::SanitizePath(new_path_, FS::DirectorySeparator::PlatformDefault);
+
+    if (!FS::Exists(old_path) || FS::Exists(new_path) || FS::IsDirectory(old_path) ||
+        !FS::Rename(old_path, new_path)) {
         return nullptr;
+    }
 
     for (auto& kv : cache) {
         // Path in cache starts with old_path
         if (kv.first.rfind(old_path, 0) == 0) {
             const auto file_old_path =
-                FileUtil::SanitizePath(kv.first, FileUtil::DirectorySeparator::PlatformDefault);
+                FS::SanitizePath(kv.first, FS::DirectorySeparator::PlatformDefault);
             const auto file_new_path =
-                FileUtil::SanitizePath(new_path + DIR_SEP + kv.first.substr(old_path.size()),
-                                       FileUtil::DirectorySeparator::PlatformDefault);
+                FS::SanitizePath(new_path + DIR_SEP + kv.first.substr(old_path.size()),
+                                 FS::DirectorySeparator::PlatformDefault);
             auto cached = cache[file_old_path];
             if (!cached.expired()) {
                 auto file = cached.lock();
@@ -211,24 +213,24 @@ VirtualDir RealVfsFilesystem::MoveDirectory(std::string_view old_path_,
 }
 
 bool RealVfsFilesystem::DeleteDirectory(std::string_view path_) {
-    const auto path = FileUtil::SanitizePath(path_, FileUtil::DirectorySeparator::PlatformDefault);
+    const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault);
     for (auto& kv : cache) {
         // Path in cache starts with old_path
         if (kv.first.rfind(path, 0) == 0) {
-            if (!cache[kv.first].expired())
+            if (!cache[kv.first].expired()) {
                 cache[kv.first].lock()->Close();
+            }
             cache.erase(kv.first);
         }
     }
-    return FileUtil::DeleteDirRecursively(path);
+    return FS::DeleteDirRecursively(path);
 }
 
-RealVfsFile::RealVfsFile(RealVfsFilesystem& base_, std::shared_ptr<FileUtil::IOFile> backing_,
+RealVfsFile::RealVfsFile(RealVfsFilesystem& base_, std::shared_ptr<FS::IOFile> backing_,
                          const std::string& path_, Mode perms_)
-    : base(base_), backing(std::move(backing_)), path(path_),
-      parent_path(FileUtil::GetParentPath(path_)),
-      path_components(FileUtil::SplitPathComponents(path_)),
-      parent_components(FileUtil::SliceVector(path_components, 0, path_components.size() - 1)),
+    : base(base_), backing(std::move(backing_)), path(path_), parent_path(FS::GetParentPath(path_)),
+      path_components(FS::SplitPathComponents(path_)),
+      parent_components(FS::SliceVector(path_components, 0, path_components.size() - 1)),
       perms(perms_) {}
 
 RealVfsFile::~RealVfsFile() = default;
@@ -258,14 +260,16 @@ bool RealVfsFile::IsReadable() const {
 }
 
 std::size_t RealVfsFile::Read(u8* data, std::size_t length, std::size_t offset) const {
-    if (!backing->Seek(offset, SEEK_SET))
+    if (!backing->Seek(offset, SEEK_SET)) {
         return 0;
+    }
     return backing->ReadBytes(data, length);
 }
 
 std::size_t RealVfsFile::Write(const u8* data, std::size_t length, std::size_t offset) {
-    if (!backing->Seek(offset, SEEK_SET))
+    if (!backing->Seek(offset, SEEK_SET)) {
         return 0;
+    }
     return backing->WriteBytes(data, length);
 }
 
@@ -282,16 +286,18 @@ bool RealVfsFile::Close() {
 
 template <>
 std::vector<VirtualFile> RealVfsDirectory::IterateEntries<RealVfsFile, VfsFile>() const {
-    if (perms == Mode::Append)
+    if (perms == Mode::Append) {
         return {};
+    }
 
     std::vector<VirtualFile> out;
-    FileUtil::ForeachDirectoryEntry(
+    FS::ForeachDirectoryEntry(
         nullptr, path,
         [&out, this](u64* entries_out, const std::string& directory, const std::string& filename) {
             const std::string full_path = directory + DIR_SEP + filename;
-            if (!FileUtil::IsDirectory(full_path))
+            if (!FS::IsDirectory(full_path)) {
                 out.emplace_back(base.OpenFile(full_path, perms));
+            }
             return true;
         });
 
@@ -300,16 +306,18 @@ std::vector<VirtualFile> RealVfsDirectory::IterateEntries<RealVfsFile, VfsFile>(
 
 template <>
 std::vector<VirtualDir> RealVfsDirectory::IterateEntries<RealVfsDirectory, VfsDirectory>() const {
-    if (perms == Mode::Append)
+    if (perms == Mode::Append) {
         return {};
+    }
 
     std::vector<VirtualDir> out;
-    FileUtil::ForeachDirectoryEntry(
+    FS::ForeachDirectoryEntry(
         nullptr, path,
         [&out, this](u64* entries_out, const std::string& directory, const std::string& filename) {
             const std::string full_path = directory + DIR_SEP + filename;
-            if (FileUtil::IsDirectory(full_path))
+            if (FS::IsDirectory(full_path)) {
                 out.emplace_back(base.OpenDirectory(full_path, perms));
+            }
             return true;
         });
 
@@ -317,29 +325,30 @@ std::vector<VirtualDir> RealVfsDirectory::IterateEntries<RealVfsDirectory, VfsDi
 }
 
 RealVfsDirectory::RealVfsDirectory(RealVfsFilesystem& base_, const std::string& path_, Mode perms_)
-    : base(base_), path(FileUtil::RemoveTrailingSlash(path_)),
-      parent_path(FileUtil::GetParentPath(path)),
-      path_components(FileUtil::SplitPathComponents(path)),
-      parent_components(FileUtil::SliceVector(path_components, 0, path_components.size() - 1)),
+    : base(base_), path(FS::RemoveTrailingSlash(path_)), parent_path(FS::GetParentPath(path)),
+      path_components(FS::SplitPathComponents(path)),
+      parent_components(FS::SliceVector(path_components, 0, path_components.size() - 1)),
       perms(perms_) {
-    if (!FileUtil::Exists(path) && True(perms & Mode::WriteAppend)) {
-        FileUtil::CreateDir(path);
+    if (!FS::Exists(path) && True(perms & Mode::WriteAppend)) {
+        FS::CreateDir(path);
     }
 }
 
 RealVfsDirectory::~RealVfsDirectory() = default;
 
 std::shared_ptr<VfsFile> RealVfsDirectory::GetFileRelative(std::string_view path) const {
-    const auto full_path = FileUtil::SanitizePath(this->path + DIR_SEP + std::string(path));
-    if (!FileUtil::Exists(full_path) || FileUtil::IsDirectory(full_path))
+    const auto full_path = FS::SanitizePath(this->path + DIR_SEP + std::string(path));
+    if (!FS::Exists(full_path) || FS::IsDirectory(full_path)) {
         return nullptr;
+    }
     return base.OpenFile(full_path, perms);
 }
 
 std::shared_ptr<VfsDirectory> RealVfsDirectory::GetDirectoryRelative(std::string_view path) const {
-    const auto full_path = FileUtil::SanitizePath(this->path + DIR_SEP + std::string(path));
-    if (!FileUtil::Exists(full_path) || !FileUtil::IsDirectory(full_path))
+    const auto full_path = FS::SanitizePath(this->path + DIR_SEP + std::string(path));
+    if (!FS::Exists(full_path) || !FS::IsDirectory(full_path)) {
         return nullptr;
+    }
     return base.OpenDirectory(full_path, perms);
 }
 
@@ -352,17 +361,17 @@ std::shared_ptr<VfsDirectory> RealVfsDirectory::GetSubdirectory(std::string_view
 }
 
 std::shared_ptr<VfsFile> RealVfsDirectory::CreateFileRelative(std::string_view path) {
-    const auto full_path = FileUtil::SanitizePath(this->path + DIR_SEP + std::string(path));
+    const auto full_path = FS::SanitizePath(this->path + DIR_SEP + std::string(path));
     return base.CreateFile(full_path, perms);
 }
 
 std::shared_ptr<VfsDirectory> RealVfsDirectory::CreateDirectoryRelative(std::string_view path) {
-    const auto full_path = FileUtil::SanitizePath(this->path + DIR_SEP + std::string(path));
+    const auto full_path = FS::SanitizePath(this->path + DIR_SEP + std::string(path));
     return base.CreateDirectory(full_path, perms);
 }
 
 bool RealVfsDirectory::DeleteSubdirectoryRecursive(std::string_view name) {
-    auto full_path = FileUtil::SanitizePath(this->path + DIR_SEP + std::string(name));
+    const auto full_path = FS::SanitizePath(this->path + DIR_SEP + std::string(name));
     return base.DeleteDirectory(full_path);
 }
 
@@ -387,8 +396,9 @@ std::string RealVfsDirectory::GetName() const {
 }
 
 std::shared_ptr<VfsDirectory> RealVfsDirectory::GetParentDirectory() const {
-    if (path_components.size() <= 1)
+    if (path_components.size() <= 1) {
         return nullptr;
+    }
 
     return base.OpenDirectory(parent_path, perms);
 }
@@ -425,16 +435,17 @@ std::string RealVfsDirectory::GetFullPath() const {
 }
 
 std::map<std::string, VfsEntryType, std::less<>> RealVfsDirectory::GetEntries() const {
-    if (perms == Mode::Append)
+    if (perms == Mode::Append) {
         return {};
+    }
 
     std::map<std::string, VfsEntryType, std::less<>> out;
-    FileUtil::ForeachDirectoryEntry(
+    FS::ForeachDirectoryEntry(
         nullptr, path,
         [&out](u64* entries_out, const std::string& directory, const std::string& filename) {
             const std::string full_path = directory + DIR_SEP + filename;
-            out.emplace(filename, FileUtil::IsDirectory(full_path) ? VfsEntryType::Directory
-                                                                   : VfsEntryType::File);
+            out.emplace(filename,
+                        FS::IsDirectory(full_path) ? VfsEntryType::Directory : VfsEntryType::File);
             return true;
         });
 
diff --git a/src/core/file_sys/vfs_real.h b/src/core/file_sys/vfs_real.h
index a0a857a31..0b537b22c 100644
--- a/src/core/file_sys/vfs_real.h
+++ b/src/core/file_sys/vfs_real.h
@@ -9,7 +9,7 @@
 #include "core/file_sys/mode.h"
 #include "core/file_sys/vfs.h"
 
-namespace FileUtil {
+namespace Common::FS {
 class IOFile;
 }
 
@@ -36,7 +36,7 @@ public:
     bool DeleteDirectory(std::string_view path) override;
 
 private:
-    boost::container::flat_map<std::string, std::weak_ptr<FileUtil::IOFile>> cache;
+    boost::container::flat_map<std::string, std::weak_ptr<Common::FS::IOFile>> cache;
 };
 
 // An implmentation of VfsFile that represents a file on the user's computer.
@@ -58,13 +58,13 @@ public:
     bool Rename(std::string_view name) override;
 
 private:
-    RealVfsFile(RealVfsFilesystem& base, std::shared_ptr<FileUtil::IOFile> backing,
+    RealVfsFile(RealVfsFilesystem& base, std::shared_ptr<Common::FS::IOFile> backing,
                 const std::string& path, Mode perms = Mode::Read);
 
     bool Close();
 
     RealVfsFilesystem& base;
-    std::shared_ptr<FileUtil::IOFile> backing;
+    std::shared_ptr<Common::FS::IOFile> backing;
     std::string path;
     std::string parent_path;
     std::vector<std::string> path_components;
diff --git a/src/core/file_sys/xts_archive.cpp b/src/core/file_sys/xts_archive.cpp
index 81413c684..ccf5966d0 100644
--- a/src/core/file_sys/xts_archive.cpp
+++ b/src/core/file_sys/xts_archive.cpp
@@ -44,7 +44,7 @@ static bool CalculateHMAC256(Destination* out, const SourceKey* key, std::size_t
 }
 
 NAX::NAX(VirtualFile file_) : header(std::make_unique<NAXHeader>()), file(std::move(file_)) {
-    std::string path = FileUtil::SanitizePath(file->GetFullPath());
+    std::string path = Common::FS::SanitizePath(file->GetFullPath());
     static const std::regex nax_path_regex("/registered/(000000[0-9A-F]{2})/([0-9A-F]{32})\\.nca",
                                            std::regex_constants::ECMAScript |
                                                std::regex_constants::icase);