Allow XamUserReadProfileSettings to use xuid to define profile

src/xenia/kernel/kernel_state.cc

@@ -960,7 +960,7 @@ uint8_t KernelState::GetConnectedUsers() const {
 void KernelState::UpdateUsedUserProfiles() {
   const uint8_t used_slots_bitmask = GetConnectedUsers();
 
-  for (uint8_t i = 1; i < 4; i++) {
+  for (uint32_t i = 1; i < 4; i++) {
     bool is_used = used_slots_bitmask & (1 << i);
 
     if (IsUserSignedIn(i) && !is_used) {

src/xenia/kernel/kernel_state.h

@@ -108,14 +108,31 @@ class KernelState {
   uint8_t GetConnectedUsers() const;
   void UpdateUsedUserProfiles();
 
-  bool IsUserSignedIn(uint8_t index) const {
+  bool IsUserSignedIn(uint32_t index) const {
     return user_profiles_.find(index) != user_profiles_.cend();
   }
 
-  xam::UserProfile* user_profile(uint8_t index) const {
+  bool IsUserSignedIn(uint64_t xuid) const {
+    return user_profile(xuid) != nullptr;
+  }
+
+  xam::UserProfile* user_profile(uint32_t index) const {
+    if (!IsUserSignedIn(index)) {
+      return nullptr;
+    }
+
     return user_profiles_.at(index).get();
   }
 
+  xam::UserProfile* user_profile(uint64_t xuid) const {
+    for (const auto& [key, value] : user_profiles_) {
+      if (value->xuid() == xuid) {
+        return user_profiles_.at(key).get();
+      }
+    }
+    return nullptr;
+  }
+
   // Access must be guarded by the global critical region.
   util::ObjectTable* object_table() { return &object_table_; }
 

src/xenia/kernel/xam/content_manager.cc

@@ -321,7 +321,8 @@ X_RESULT ContentManager::DeleteContent(const XCONTENT_AGGREGATE_DATA& data) {
 
 std::filesystem::path ContentManager::ResolveGameUserContentPath() {
   auto title_id = fmt::format("{:08X}", kernel_state_->title_id());
-  auto user_name = xe::to_path(kernel_state_->user_profile(0)->name());
+  auto user_name =
+      xe::to_path(kernel_state_->user_profile(uint32_t(0))->name());
 
   // Per-game per-profile data location:
   // content_root/title_id/profile/user_name

src/xenia/kernel/xam/xam_user.cc

@@ -224,17 +224,31 @@ uint32_t XamUserReadProfileSettingsEx(uint32_t title_id, uint32_t user_index,
 
   // Title ID = 0 means us.
   // 0xfffe07d1 = profile?
-  if (!kernel_state()->IsUserSignedIn(user_index)) {
+  if (!kernel_state()->IsUserSignedIn(user_index) && !xuids) {
     if (overlapped) {
-    kernel_state()->CompleteOverlappedImmediate(
-        kernel_state()->memory()->HostToGuestVirtual(overlapped),
-                                                  X_ERROR_NO_SUCH_USER);
+      kernel_state()->CompleteOverlappedImmediate(
+          kernel_state()->memory()->HostToGuestVirtual(overlapped),
+          X_ERROR_NO_SUCH_USER);
       return X_ERROR_IO_PENDING;
     }
     return X_ERROR_NO_SUCH_USER;
   }
 
-  const auto& user_profile = kernel_state()->user_profile(user_index);
+  auto user_profile = kernel_state()->user_profile(user_index);
+
+  if (xuids) {
+    uint64_t user_xuid = static_cast<uint64_t>(xuids[0]);
+    if (!kernel_state()->IsUserSignedIn(user_xuid)) {
+      if (overlapped) {
+        kernel_state()->CompleteOverlappedImmediate(
+            kernel_state()->memory()->HostToGuestVirtual(overlapped),
+            X_ERROR_NO_SUCH_USER);
+        return X_ERROR_IO_PENDING;
+      }
+      return X_ERROR_NO_SUCH_USER;
+    }
+    user_profile = kernel_state()->user_profile(user_xuid);
+  }
 
   // First call asks for size (fill buffer_size_ptr).
   // Second call asks for buffer contents with that size.
@@ -529,7 +543,7 @@ dword_result_t XamShowSigninUI_entry(dword_t unk, dword_t unk_mask) {
   // Mask values vary. Probably matching user types? Local/remote?
   // Games seem to sit and loop until we trigger this notification:
 
-  for (uint8_t i = 0; i < 4; i++) {
+  for (uint32_t i = 0; i < 4; i++) {
     if (kernel_state()->IsUserSignedIn(i)) {
       // XN_SYS_SIGNINCHANGED
       kernel_state()->BroadcastNotification(0xA, i);