ProcessManager: Refactor resource limits, complete pm:shell.

stratosphere/pm/source/pm_registration.cpp

@@ -3,6 +3,7 @@
 #include <atomic>
 
 #include "pm_registration.hpp"
+#include "pm_resource_limits.hpp"
 #include "pm_process_wait.hpp"
 
 static ProcessList g_process_list;
@@ -21,24 +22,6 @@ static SystemEvent *g_process_event = NULL;
 static SystemEvent *g_debug_title_event = NULL;
 static SystemEvent *g_debug_application_event = NULL;
 
-static const u64 g_memory_resource_limits[5][3] = {
-    {0x010D00000ULL, 0x0CD500000ULL, 0x021700000ULL},
-    {0x01E100000ULL, 0x080000000ULL, 0x061800000ULL},
-    {0x014800000ULL, 0x0CD500000ULL, 0x01DC00000ULL},
-    {0x028D00000ULL, 0x133400000ULL, 0x023800000ULL},
-    {0x028D00000ULL, 0x0CD500000ULL, 0x089700000ULL}
-};
-
-/* These are the limits for LimitableResources. */
-/* Memory, Threads, Events, TransferMemories, Sessions. */
-static u64 g_resource_limits[3][5] = {
-    {0x0, 0x1FC, 0x258, 0x80, 0x31A},
-    {0x0, 0x60, 0x0, 0x20, 0x1},
-    {0x0, 0x60, 0x0, 0x20, 0x5},
-};
-
-static Handle g_resource_limit_handles[3] = {0};
-
 Registration::AutoProcessListLock::AutoProcessListLock() {
     g_process_list.Lock();
     this->has_lock = true;
@@ -63,53 +46,7 @@ void Registration::InitializeSystemResources() {
     g_debug_application_event = new SystemEvent(&IEvent::PanicCallback);
     g_process_launch_start_event = new SystemEvent(&Registration::ProcessLaunchStartCallback);
     
-    /* Get memory limits. */
-    u64 memory_arrangement;
-    if (R_FAILED(splGetConfig(SplConfigItem_MemoryArrange, &memory_arrangement))) {
-        /* TODO: panic. */
-    }
-    memory_arrangement &= 0x3F;
-    int memory_limit_type;
-    switch (memory_arrangement) {
-        case 2:
-            memory_limit_type = 1;
-            break;
-        case 3:
-            memory_limit_type = 2;
-            break;
-        case 17:
-            memory_limit_type = 3;
-            break;
-        case 18:
-            memory_limit_type = 4;
-            break;
-        default:
-            memory_limit_type = 0;
-            break;
-    }
-    for (unsigned int i = 0; i < 3; i++) {
-        g_resource_limits[i][0] = g_memory_resource_limits[memory_limit_type][i];
-    }
-    
-    /* Create resource limits. */
-    for (unsigned int i = 0; i < 3; i++) {
-        if (i > 0) {
-            if (R_FAILED(svcCreateResourceLimit(&g_resource_limit_handles[i]))) {
-                /* TODO: Panic. */
-            }
-        } else {
-            u64 out = 0;
-            if (R_FAILED(svcGetInfo(&out, 9, 0, 0))) {
-                /* TODO: Panic. */
-            }
-            g_resource_limit_handles[i] = (Handle)out;
-        }
-        for (unsigned int r = 0; r < 5; r++) {
-            if (R_FAILED(svcSetResourceLimitLimitValue(g_resource_limit_handles[i], (LimitableResource)r, g_resource_limits[i][r]))) {
-                /* TODO: Panic. */
-            }
-        }
-    }
+    ResourceLimitUtils::InitializeLimits();
 }
 
 Result Registration::ProcessLaunchStartCallback(Handle *handles, size_t num_handles, u64 timeout) {
@@ -131,7 +68,6 @@ void Registration::HandleProcessLaunch() {
     Result rc;
     u64 launch_flags = g_process_launch_state.launch_flags;
     u64 *out_pid = g_process_launch_state.out_pid;
-    u32 reslimit_idx;
     Process new_process = {0};
     new_process.tid_sid = g_process_launch_state.tid_sid;
     u8 *ac_buf = new u8[4 * sizeof(LoaderProgramInfo)];
@@ -144,14 +80,9 @@ void Registration::HandleProcessLaunch() {
     }
         
     /* Get the resource limit handle, ensure that we can launch the program. */
-    if ((program_info.application_type & 3) == 1) {
-        if (HasApplicationProcess(NULL)) {
-            rc = 0xA0F;
-            goto HANDLE_PROCESS_LAUNCH_END;
-        }
-        reslimit_idx = 1;
-    } else {
-        reslimit_idx = 2 * ((program_info.application_type & 3) == 2);
+    if ((program_info.application_type & 3) == 1 && HasApplicationProcess(NULL)) {
+        rc = 0xA0F;
+        goto HANDLE_PROCESS_LAUNCH_END;
     }
     
     /* Try to register the title for launch in loader... */
@@ -161,11 +92,11 @@ void Registration::HandleProcessLaunch() {
         
     /* Make sure the previous application is cleaned up. */
     if ((program_info.application_type & 3) == 1) {
-        EnsureApplicationResourcesAvailable();
+        ResourceLimitUtils::EnsureApplicationResourcesAvailable();
     }
     
     /* Try to create the process... */
-    if (R_FAILED((rc = ldrPmCreateProcess(LAUNCHFLAGS_ARGLOW(launch_flags) | LAUNCHFLAGS_ARGHIGH(launch_flags), new_process.ldr_queue_index, g_resource_limit_handles[reslimit_idx], &new_process.handle)))) {
+    if (R_FAILED((rc = ldrPmCreateProcess(LAUNCHFLAGS_ARGLOW(launch_flags) | LAUNCHFLAGS_ARGHIGH(launch_flags), new_process.ldr_queue_index, ResourceLimitUtils::GetResourceLimitHandle(program_info.application_type), &new_process.handle)))) {
         goto PROCESS_CREATION_FAILED;
     }
         
@@ -508,17 +439,4 @@ Handle Registration::GetDebugTitleEventHandle() {
 
 Handle Registration::GetDebugApplicationEventHandle() {
     return g_debug_application_event->get_handle();
-}
-
-void Registration::EnsureApplicationResourcesAvailable() {
-    Handle application_reslimit_h = g_resource_limit_handles[1];
-    for (unsigned int i = 0; i < 5; i++) {
-        u64 result;
-        do {
-            if (R_FAILED(svcGetResourceLimitCurrentValue(&result, application_reslimit_h, (LimitableResource)i))) {
-                return;
-            }
-            svcSleepThread(1000000ULL);
-        } while (result);
-    }
 }

stratosphere/pm/source/pm_registration.hpp

@@ -65,6 +65,5 @@ class Registration {
         static Result LaunchProcessByTidSid(TidSid tid_sid, u64 launch_flags, u64 *out_pid);
         
         static bool HasApplicationProcess(Process **out);
-        static void EnsureApplicationResourcesAvailable();
 };
 

stratosphere/pm/source/pm_resource_limits.cpp

@@ -0,0 +1,192 @@
+#include <switch.h>
+#include <stratosphere.hpp>
+
+#include "pm_resource_limits.hpp"
+
+/* Memory that system, application, applet are allowed to allocate. */
+static const u64 g_memory_resource_limits_deprecated[5][3] = {
+    {0x010D00000ULL, 0x0CD500000ULL, 0x021700000ULL},
+    {0x01E100000ULL, 0x080000000ULL, 0x061800000ULL},
+    {0x014800000ULL, 0x0CD500000ULL, 0x01DC00000ULL},
+    {0x028D00000ULL, 0x133400000ULL, 0x023800000ULL},
+    {0x028D00000ULL, 0x0CD500000ULL, 0x089700000ULL}
+};
+
+/* These limits were altered in 4.x, which introduced ResourceLimitUtils::BoostSystemMemoryResourceLimit(). */
+static const u64 g_memory_resource_limits_4x[5][3] = {
+    {0x011700000ULL, 0x0CD500000ULL, 0x020D00000ULL}, /* 10 MB was taken from applet and given to system. */
+    {0x01E100000ULL, 0x080000000ULL, 0x061800000ULL}, /* No changes. */
+    {0x015200000ULL, 0x0CD500000ULL, 0x01D200000ULL}, /* 10 MB was taken from applet and given to system. */
+    {0x028D00000ULL, 0x133400000ULL, 0x023800000ULL}, /* No changes. */
+    {0x028D00000ULL, 0x0CD500000ULL, 0x089700000ULL}  /* No changes. */
+};
+
+/* These are the limits for LimitableResources. */
+/* Memory, Threads, Events, TransferMemories, Sessions. */
+static u64 g_resource_limits_deprecated[3][5] = {
+    {0x0, 0x1FC, 0x258, 0x80, 0x31A},
+    {0x0, 0x60, 0x0, 0x20, 0x1},
+    {0x0, 0x60, 0x0, 0x20, 0x5},
+};
+
+/* 4.x boosted the number of threads that system modules are allowed to make. */
+static u64 g_resource_limits_4x[3][5] = {
+    {0x0, 0x260, 0x258, 0x80, 0x31A},
+    {0x0, 0x60, 0x0, 0x20, 0x1},
+    {0x0, 0x60, 0x0, 0x20, 0x5},
+};
+
+static Handle g_resource_limit_handles[3] = {0};
+
+
+static u64 g_memory_resource_limits[5][3] = {0};
+static u64 g_resource_limits[3][5] = {0};
+static int g_memory_limit_type;
+static u64 g_system_boost_size = 0;
+
+/* Tries to set Resource limits for a category. */
+static Result SetResourceLimits(ResourceLimitUtils::ResourceLimitCategory category, u64 new_memory_size) {
+    Result rc = 0;
+    u64 old_memory_size = g_resource_limits[category][LimitableResource_Memory];
+    g_resource_limits[category][LimitableResource_Memory] = new_memory_size;
+    for (unsigned int r = 0; r < 5; r++) {
+        if (R_FAILED((rc = svcSetResourceLimitLimitValue(g_resource_limit_handles[category], (LimitableResource)r, g_resource_limits[category][r])))) {
+            g_resource_limits[category][LimitableResource_Memory] = old_memory_size;
+            return rc;
+        }
+    }
+    return rc;
+}
+
+
+static Result SetNewMemoryResourceLimit(ResourceLimitUtils::ResourceLimitCategory category, u64 new_memory_size) {
+    Result rc = 0;
+    u64 old_memory_size = g_resource_limits[category][LimitableResource_Memory];
+    g_resource_limits[category][LimitableResource_Memory] = new_memory_size;
+    if (R_FAILED((rc = svcSetResourceLimitLimitValue(g_resource_limit_handles[category], LimitableResource_Memory, g_resource_limits[category][LimitableResource_Memory])))) {
+        g_resource_limits[category][LimitableResource_Memory] = old_memory_size;
+    }
+    return rc;
+}
+
+void ResourceLimitUtils::InitializeLimits() {
+    /* Set global aliases. */
+    if (kernelAbove400()) {
+        memcpy(&g_memory_resource_limits, &g_memory_resource_limits_4x, sizeof(g_memory_resource_limits));
+        memcpy(&g_resource_limits, &g_resource_limits_4x, sizeof(g_resource_limits));
+    } else {
+        memcpy(&g_memory_resource_limits, &g_memory_resource_limits_deprecated, sizeof(g_memory_resource_limits));
+        memcpy(&g_resource_limits, &g_resource_limits_deprecated, sizeof(g_resource_limits));
+    }
+    /* Get memory limits. */
+    u64 memory_arrangement;
+    if (R_FAILED(splGetConfig(SplConfigItem_MemoryArrange, &memory_arrangement))) {
+        /* TODO: panic. */
+    }
+    memory_arrangement &= 0x3F;
+    switch (memory_arrangement) {
+        case 2:
+            g_memory_limit_type = 1;
+            break;
+        case 3:
+            g_memory_limit_type = 2;
+            break;
+        case 17:
+            g_memory_limit_type = 3;
+            break;
+        case 18:
+            g_memory_limit_type = 4;
+            break;
+        default:
+            g_memory_limit_type = 0;
+            break;
+    }
+
+    /* Create resource limits. */
+    for (unsigned int i = 0; i < 3; i++) {
+        if (i > 0) {
+            if (R_FAILED(svcCreateResourceLimit(&g_resource_limit_handles[i]))) {
+                /* TODO: Panic. */
+            }
+        } else {
+            u64 out = 0;
+            if (R_FAILED(svcGetInfo(&out, 9, 0, 0))) {
+                /* TODO: Panic. */
+            }
+            g_resource_limit_handles[i] = (Handle)out;
+        }
+        
+        if (R_FAILED(SetResourceLimits((ResourceLimitCategory)i, g_memory_resource_limits[g_memory_limit_type][i]))) {
+            /* TODO: Panic. */
+        }
+    }
+}
+
+void ResourceLimitUtils::EnsureApplicationResourcesAvailable() {
+    Handle application_reslimit_h = g_resource_limit_handles[1];
+    for (unsigned int i = 0; i < 5; i++) {
+        u64 result;
+        do {
+            if (R_FAILED(svcGetResourceLimitCurrentValue(&result, application_reslimit_h, (LimitableResource)i))) {
+                return;
+            }
+            svcSleepThread(1000000ULL);
+        } while (result);
+    }
+}
+
+Handle ResourceLimitUtils::GetResourceLimitHandle(u16 application_type) {
+    if ((application_type & 3) == 1) {
+        return g_resource_limit_handles[1];
+    } else {
+        return g_resource_limit_handles[2 * ((application_type & 3) == 2)];
+    }
+}
+
+Result ResourceLimitUtils::BoostSystemMemoryResourceLimit(u64 boost_size) {
+    Result rc = 0;
+    if (boost_size > g_memory_resource_limits[g_memory_limit_type][ResourceLimitCategory_Application]) {
+        return 0xC0F;
+    }
+    u64 app_size = g_memory_resource_limits[g_memory_limit_type][ResourceLimitCategory_Application] - boost_size;
+    if (kernelAbove500()) {
+        if (boost_size < g_system_boost_size) {
+            if (R_FAILED((rc = svcSetUnsafeLimit(boost_size)))) {
+                return rc;
+            }
+            if (R_FAILED((rc = SetNewMemoryResourceLimit(ResourceLimitCategory_Application, app_size)))) {
+                return rc;
+            }
+        } else {
+            if (R_FAILED((rc = SetNewMemoryResourceLimit(ResourceLimitCategory_Application, app_size)))) {
+                return rc;
+            }
+            if (R_FAILED((rc = svcSetUnsafeLimit(boost_size)))) {
+                return rc;
+            }
+        }
+    } else if (kernelAbove400()) {
+        u64 sys_size = g_memory_resource_limits[g_memory_limit_type][ResourceLimitCategory_System] + boost_size;
+        if (boost_size < g_system_boost_size) {
+            if (R_FAILED((rc = SetResourceLimits(ResourceLimitCategory_System, sys_size)))) {
+                return rc;
+            }
+            if (R_FAILED((rc = SetResourceLimits(ResourceLimitCategory_Application, app_size)))) {
+                return rc;
+            }
+        } else {
+            if (R_FAILED((rc = SetResourceLimits(ResourceLimitCategory_Application, app_size)))) {
+                return rc;
+            }
+            if (R_FAILED((rc = SetResourceLimits(ResourceLimitCategory_System, sys_size)))) {
+                return rc;
+            }
+        }
+    } else {
+        rc = 0xF601;
+    }
+    if (R_SUCCEEDED(rc)) {
+        g_system_boost_size = boost_size;
+    }
+    return rc;
+}

stratosphere/pm/source/pm_resource_limits.hpp

@@ -0,0 +1,16 @@
+#pragma once
+#include <switch.h>
+#include <stratosphere.hpp>
+
+class ResourceLimitUtils {
+    public:
+        enum ResourceLimitCategory {
+            ResourceLimitCategory_System = 0,
+            ResourceLimitCategory_Application = 1,
+            ResourceLimitCategory_Applet = 2
+        };
+        static void InitializeLimits();
+        static void EnsureApplicationResourcesAvailable();
+        static Handle GetResourceLimitHandle(u16 application_type);
+        static Result BoostSystemMemoryResourceLimit(u64 boost_size);
+};

stratosphere/pm/source/pm_shell.cpp

@@ -1,5 +1,6 @@
 #include <switch.h>
 #include "pm_registration.hpp"
+#include "pm_resource_limits.hpp"
 #include "pm_shell.hpp"
 #include "pm_debug.hpp"
 
@@ -170,11 +171,11 @@ std::tuple<Result, u64> ShellService::get_application_process_id() {
     return {0x20F, 0};
 }
 
-std::tuple<Result> ShellService::boost_system_memory_resource_limit() {
+std::tuple<Result> ShellService::boost_system_memory_resource_limit(u64 sysmem_size) {
     if (!kernelAbove400()) {
         return {0xF601};
     }
     
     /* TODO */
-    return {0xF601};
+    return {ResourceLimitUtils::BoostSystemMemoryResourceLimit(sysmem_size)};
 }

stratosphere/pm/source/pm_shell.hpp

@@ -46,5 +46,5 @@ class ShellService : IServiceObject {
         std::tuple<Result> clear_process_notification_flag(u64 pid);
         std::tuple<Result> notify_boot_finished();
         std::tuple<Result, u64> get_application_process_id();
-        std::tuple<Result> boost_system_memory_resource_limit();
+        std::tuple<Result> boost_system_memory_resource_limit(u64 sysmem_size);
 };