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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| /* | ||
| * Copyright (c) 2018-2019 John Davis | ||
| * Copyright (c) 2020 IOIIIO | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included in all | ||
| * copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| * SOFTWARE. | ||
| */ | ||
|
|
||
| #include <Headers/plugin_start.hpp> | ||
| #include <Headers/kern_api.hpp> | ||
| #include <Headers/kern_file.hpp> | ||
|
|
||
| // Path to binary. | ||
| static const char *binPathMemorySlotNotification = "/System/Library/CoreServices/MemorySlotNotification"; | ||
|
|
||
| static const uint32_t SectionActive = 1; | ||
|
|
||
| // Find: 74 xx 4C 89 F7 E8 xx xx xx xx | ||
| // Replace: 90 90 4C 89 F7 90 90 90 90 90 | ||
| static const size_t patchBytesCount = 10; | ||
| static const uint8_t replaceBytes[patchBytesCount] = { 0x90, 0x90, 0x4C, 0x89, 0xF7, 0x90, 0x90, 0x90, 0x90, 0x90 }; | ||
|
|
||
| // Patching info for MemorySlotNotification binary. | ||
| static uint8_t findBytesMemorySlotNotification[patchBytesCount] = { }; | ||
| static UserPatcher::BinaryModPatch patchBytesMemorySlotNotification { | ||
| CPU_TYPE_X86_64, | ||
| 0, | ||
| findBytesMemorySlotNotification, | ||
| replaceBytes, | ||
| patchBytesCount, | ||
| 0, | ||
| 1, | ||
| UserPatcher::FileSegment::SegmentTextText, | ||
| SectionActive | ||
| }; | ||
|
|
||
| // BinaryModInfo array containing all patches required. | ||
| static UserPatcher::BinaryModInfo binaryPatchesCatalina[] { | ||
| { binPathMemorySlotNotification, &patchBytesMemorySlotNotification, 1}, | ||
| }; | ||
|
|
||
| static void buildPatch(KernelPatcher &patcher, const char *path, uint8_t *findBuffer) { | ||
| DBGLOG("MacProMemoryNotificationDisabler", "buildPatches() start"); | ||
|
|
||
| // Get contents of binary. | ||
| size_t outSize; | ||
| uint8_t *buffer = FileIO::readFileToBuffer(path, outSize); | ||
| if (buffer == NULL) { | ||
| DBGLOG("MacProMemoryNotificationDisabler", "Failed to read binary: %s\n", path); | ||
| procInfo.section = procInfo.SectionDisabled; | ||
| procInfoCatalina.section = procInfoCatalina.SectionDisabled; | ||
| return; | ||
| } | ||
|
|
||
| // Find where the notification is called. | ||
| off_t index = 0; | ||
| for (off_t i = 0; i < outSize; i++) { | ||
| if (buffer[i] == 0x74 && buffer[i+2] == 0x4C && buffer[i+3] == 0x89 | ||
| && buffer[i+4] == 0xF7 && buffer[i+5] == 0xE8) { | ||
| index = i; | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| // If we found no match, we can't go on. | ||
| if (index == 0) | ||
| panic("MacProMemoryNotificationDisabler: Failed to get index into binary: %s\n", path); | ||
|
|
||
| // Build find pattern. | ||
| uint8_t *bufferOffset = buffer + index; | ||
| for (uint32_t i = 0; i < patchBytesCount; i++) | ||
| findBuffer[i] = bufferOffset[i]; | ||
|
|
||
| // Free buffer. | ||
| Buffer::deleter(buffer); | ||
| } | ||
|
|
||
| static void buildPatchesCatalina(void *user, KernelPatcher &patcher) { | ||
| // Build patches for binaries. | ||
| buildPatch(patcher, binPathMemorySlotNotification, findBytesMemorySlotNotification); | ||
| } | ||
|
|
||
| // Main function. | ||
| static void mpmndStart() { | ||
| DBGLOG("MacProMemoryNotificationDisabler", "start"); | ||
|
|
||
| // Are we on 10.15 or above? | ||
| if (getKernelVersion() >= KernelVersion::Catalina) { | ||
| // Load callback so we can determine patterns to search for. | ||
| lilu.onPatcherLoad(buildPatchesCatalina); | ||
|
|
||
| // Load patches into Lilu for 10.15+. | ||
| lilu.onProcLoadForce(&procInfoCatalina, 1, nullptr, nullptr, binaryPatchesCatalina, arrsize(binaryPatchesCatalina)); | ||
| } | ||
| } | ||
|
|
||
| // Boot args. | ||
| static const char *bootargOff[] { | ||
| "-mpmndoff" | ||
| }; | ||
| static const char *bootargDebug[] { | ||
| "-mpmnddbg" | ||
| }; | ||
| static const char *bootargBeta[] { | ||
| "-mpmndbeta" | ||
| }; | ||
|
|
||
| // Plugin configuration. | ||
| PluginConfiguration ADDPR(config) { | ||
| xStringify(PRODUCT_NAME), | ||
| parseModuleVersion(xStringify(MODULE_VERSION)), | ||
| LiluAPI::AllowNormal, | ||
| bootargOff, | ||
| arrsize(bootargOff), | ||
| bootargDebug, | ||
| arrsize(bootargDebug), | ||
| bootargBeta, | ||
| arrsize(bootargBeta), | ||
| KernelVersion::Catalina, | ||
| []() { | ||
| mpmndStart(); | ||
| } | ||
| }; |
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