HLE/FS: Implemented FS::GetProgramLaunchInfo.

This function is used by the DLP system module during the DLPSRVR initialization.

src/core/hle/kernel/process.cpp

@@ -2,6 +2,7 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <algorithm>
 #include <memory>
 #include "common/assert.h"
 #include "common/common_funcs.h"
@@ -16,6 +17,9 @@
 
 namespace Kernel {
 
+// Lists all processes that exist in the current session.
+static std::vector<SharedPtr<Process>> process_list;
+
 SharedPtr<CodeSet> CodeSet::Create(std::string name, u64 program_id) {
     SharedPtr<CodeSet> codeset(new CodeSet);
 
@@ -37,6 +41,7 @@ SharedPtr<Process> Process::Create(SharedPtr<CodeSet> code_set) {
     process->flags.raw = 0;
     process->flags.memory_region.Assign(MemoryRegion::APPLICATION);
 
+    process_list.push_back(process);
     return process;
 }
 
@@ -299,5 +304,20 @@ ResultCode Process::LinearFree(VAddr target, u32 size) {
 Kernel::Process::Process() {}
 Kernel::Process::~Process() {}
 
-SharedPtr<Process> g_current_process;
+void ClearProcessList() {
+    process_list.clear();
 }
+
+SharedPtr<Process> GetProcessById(u32 process_id) {
+    auto itr = std::find_if(
+        process_list.begin(), process_list.end(),
+        [&](const SharedPtr<Process>& process) { return process->process_id == process_id; });
+
+    if (itr == process_list.end())
+        return nullptr;
+
+    return *itr;
+}
+
+SharedPtr<Process> g_current_process;
+} // namespace Kernel