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[Kernel] Add XamContentCreateDeviceEnumerator export 

Also changed name field of DeviceInfo to be a wchar_t* of known length, makes it match the X360 DeviceInfo struct more closely and it's easier to make sure things reading it won't overflow anything.
This commit is contained in:
emoose 2018-10-22 17:39:00 +01:00 committed by gibbed
parent d68c27d78b
commit 5e9e226c94
1 changed files with 31 additions and 2 deletions
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33
src/xenia/kernel/xam/xam_content.cc
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@ -23,7 +23,7 @@ struct DeviceInfo {
uint32_t device_type;
uint64_t total_bytes;
uint64_t free_bytes;
std::wstring name;
wchar_t name[28];
};
static const DeviceInfo dummy_device_info_ = {
0xF00D0000,
@ -57,7 +57,7 @@ dword_result_t XamContentGetDeviceName(dword_t device_id,
return X_ERROR_DEVICE_NOT_CONNECTED;
}
if (name_capacity < dummy_device_info_.name.size() + 1) {
if (name_capacity < wcslen(dummy_device_info_.name) + 1) {
return X_ERROR_INSUFFICIENT_BUFFER;
}
@ -174,6 +174,35 @@ dword_result_t XamContentCreateEnumerator(dword_t user_index, dword_t device_id,
}
DECLARE_XAM_EXPORT1(XamContentCreateEnumerator, kContent, kImplemented);
dword_result_t XamContentCreateDeviceEnumerator(dword_t content_type,
dword_t content_flags,
dword_t max_count,
lpdword_t buffer_size_ptr,
lpdword_t handle_out) {
assert_not_null(handle_out);
if (buffer_size_ptr) {
*buffer_size_ptr = sizeof(DeviceInfo) * max_count;
}
auto e = new XStaticEnumerator(kernel_state(), max_count, sizeof(DeviceInfo));
e->Initialize();
// Copy our dummy device into the enumerator
DeviceInfo* dev = (DeviceInfo*)e->AppendItem();
if (dev) {
xe::store_and_swap(&dev->device_id, dummy_device_info_.device_id);
xe::store_and_swap(&dev->device_type, dummy_device_info_.device_type);
xe::store_and_swap(&dev->total_bytes, dummy_device_info_.total_bytes);
xe::store_and_swap(&dev->free_bytes, dummy_device_info_.free_bytes);
xe::copy_and_swap(dev->name, dummy_device_info_.name, 28);
}
*handle_out = e->handle();
return X_ERROR_SUCCESS;
}
DECLARE_XAM_EXPORT(XamContentCreateDeviceEnumerator, ExportTag::kImplemented);
dword_result_t XamContentCreateEx(dword_t user_index, lpstring_t root_name,
lpvoid_t content_data_ptr, dword_t flags,
lpdword_t disposition_ptr,