mirror of
https://github.com/boykopovar/AnyPS5.git
synced 2026-10-28 12:05:06 +00:00
Emanuele
f7f88a4886
- mlock on macOS skipped every page the locked ranges recorded, but a mapping that replaces a locked range in place leaves the record behind without wires, so a later mlock returned 0 and wired nothing. Within a recorded range it now wires again the host regions whose wire count is 0. The mlock test locks, remaps the range fixed and locks again. - munlock and munlockall on macOS hold the locked-range lock across the host unwire and the record update, so a concurrent mlock cannot see a range as wired while it is being unwired. - sceKernelVirtualQuery limits the host region it reports to the write watch run that holds the address, so the permissions it reports hold for the whole extent. - The libc debt entry says what the mapping paths do: they register the range again, and GuestWriteWatchProtectionChanged has no caller yet.
189 lines
6.5 KiB
C++
189 lines
6.5 KiB
C++
#include "prx/libkernel/include/Api.hpp"
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#include "prx/libc/include/Api.hpp"
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#include "prx/libc/include/general/VabiMacros.hpp"
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#include <cstddef>
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#include <cstdint>
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#include <cstdlib>
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#include <limits>
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#include <stdexcept>
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#ifdef _WIN32
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#ifndef NOMINMAX
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#define NOMINMAX
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#endif
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#include <windows.h>
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#endif
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#if defined(__linux__)
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#include <fstream>
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#include <string>
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#endif
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#ifdef __APPLE__
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#include <mach/mach.h>
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#include <mach/mach_vm.h>
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#endif
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static void Require(bool value) { if (!value) std::abort(); }
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static void RequireLockAllInvalid(int flags) {
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*__error_nid_postfix() = 0;
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Require(mlockall_nid_postfix(flags) == -1 && *__error_nid_postfix() == 22);
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}
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static void RequireLockAllUnsupported(int flags) {
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bool rejected = false;
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try {
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mlockall_nid_postfix(flags);
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} catch (const std::runtime_error&) {
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rejected = true;
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}
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Require(rejected);
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}
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#if defined(__linux__) && !defined(ANYPS5_ENABLE_ASAN) && !defined(ANYPS5_ENABLE_TSAN)
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#define HAS_LOCKED_KILOBYTES
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static std::size_t LockedKilobytes() {
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std::ifstream status("/proc/self/status");
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std::string line;
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while (std::getline(status, line)) {
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if (line.rfind("VmLck:", 0) == 0) return std::strtoull(line.c_str() + 6, nullptr, 10);
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}
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return 0;
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}
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#endif
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#ifdef __APPLE__
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static unsigned WiredCount(const void* page) {
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mach_vm_address_t address = reinterpret_cast<mach_vm_address_t>(page);
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mach_vm_size_t size = 0;
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vm_region_basic_info_data_64_t info{};
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mach_msg_type_number_t count = VM_REGION_BASIC_INFO_COUNT_64;
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mach_port_t object = MACH_PORT_NULL;
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Require(mach_vm_region(mach_task_self(), &address, &size, VM_REGION_BASIC_INFO_64, reinterpret_cast<vm_region_info_t>(&info), &count, &object) == KERN_SUCCESS);
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Require(address <= reinterpret_cast<mach_vm_address_t>(page));
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return info.user_wired_count;
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}
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#endif
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int main() {
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constexpr int untouched = 12345;
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constexpr std::size_t page = 0x4000;
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#ifdef _WIN32
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constexpr std::size_t length = 0x400000;
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#else
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constexpr std::size_t length = 0x10000;
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#endif
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void* mapped = nullptr;
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Require(sceKernelMapFlexibleMemory(&mapped, length, 3, 0) == 0);
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auto* bytes = static_cast<unsigned char*>(mapped);
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*__error_nid_postfix() = untouched;
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Require(mlock_nid_postfix(mapped, 0) == 0);
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Require(*__error_nid_postfix() == untouched);
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#ifdef HAS_LOCKED_KILOBYTES
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const auto lockedBefore = LockedKilobytes();
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#endif
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Require(mlock_nid_postfix(bytes + 1, length - page) == 0);
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#ifdef HAS_LOCKED_KILOBYTES
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Require(LockedKilobytes() - lockedBefore == length / 1024);
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#endif
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Require(mlock_nid_postfix(mapped, length) == 0);
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Require(mlock_nid_postfix(mapped, length) == 0);
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#ifdef __APPLE__
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Require(WiredCount(mapped) == 1);
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void* remapped = mapped;
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Require(sceKernelMapFlexibleMemory(&remapped, length, 3, 0x10) == 0 && remapped == mapped);
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Require(WiredCount(mapped) == 0);
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Require(mlock_nid_postfix(mapped, length) == 0);
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Require(WiredCount(mapped) == 1);
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#endif
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bytes[length - 1] = 7;
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*__error_nid_postfix() = untouched;
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Require(munlock_nid_postfix(mapped, 0) == 0);
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Require(*__error_nid_postfix() == untouched);
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Require(munlock_nid_postfix(bytes + 1, length - page) == 0);
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#ifdef HAS_LOCKED_KILOBYTES
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Require(LockedKilobytes() == lockedBefore);
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#elif defined(_WIN32)
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Require(!VirtualUnlock(mapped, length) && GetLastError() == ERROR_NOT_LOCKED);
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#endif
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*__error_nid_postfix() = untouched;
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Require(munlock_nid_postfix(mapped, length) == 0);
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Require(*__error_nid_postfix() == untouched);
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#ifdef __APPLE__
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Require(WiredCount(mapped) == 0);
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#endif
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bytes[0] = 7;
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Require(mlock_nid_postfix(mapped, page) == 0);
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#ifdef HAS_LOCKED_KILOBYTES
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Require(LockedKilobytes() - lockedBefore == page / 1024);
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#endif
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Require(munlock_nid_postfix(mapped, length) == 0);
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#ifdef HAS_LOCKED_KILOBYTES
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Require(LockedKilobytes() == lockedBefore);
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#elif defined(_WIN32)
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Require(!VirtualUnlock(mapped, page) && GetLastError() == ERROR_NOT_LOCKED);
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#endif
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Require(mlock_nid_postfix(mapped, page) == 0);
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Require(munlock_nid_postfix(mapped, page) == 0);
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#ifdef HAS_LOCKED_KILOBYTES
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Require(LockedKilobytes() == lockedBefore);
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#elif defined(_WIN32)
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Require(!VirtualUnlock(mapped, page) && GetLastError() == ERROR_NOT_LOCKED);
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#endif
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Require(mlock_nid_postfix(mapped, page) == 0);
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#ifdef HAS_LOCKED_KILOBYTES
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Require(LockedKilobytes() - lockedBefore == page / 1024);
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#endif
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Require(mlock_nid_postfix(mapped, page) == 0);
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*__error_nid_postfix() = untouched;
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Require(munlockall_nid_postfix() == 0);
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Require(*__error_nid_postfix() == untouched);
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#ifdef HAS_LOCKED_KILOBYTES
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Require(LockedKilobytes() == lockedBefore);
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#elif defined(__APPLE__)
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Require(WiredCount(mapped) == 0);
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#elif defined(_WIN32)
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Require(!VirtualUnlock(mapped, page) && GetLastError() == ERROR_NOT_LOCKED);
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#endif
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*__error_nid_postfix() = 0;
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Require(mlock_nid_postfix(reinterpret_cast<void*>(std::numeric_limits<std::uintptr_t>::max() - page + 1), page * 2) == -1);
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Require(*__error_nid_postfix() == 22);
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*__error_nid_postfix() = 0;
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Require(munlock_nid_postfix(reinterpret_cast<void*>(std::numeric_limits<std::uintptr_t>::max() - page + 1), page * 2) == -1);
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Require(*__error_nid_postfix() == 22);
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void* reserved = nullptr;
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Require(sceKernelReserveVirtualRange(&reserved, page, 0, 0) == 0);
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#if !defined(ANYPS5_ENABLE_ASAN) && !defined(ANYPS5_ENABLE_TSAN)
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*__error_nid_postfix() = 0;
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Require(mlock_nid_postfix(reserved, page) == -1 && *__error_nid_postfix() == 12);
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#endif
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*__error_nid_postfix() = untouched;
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Require(munlock_nid_postfix(reserved, page) == 0);
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Require(*__error_nid_postfix() == untouched);
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Require(sceKernelMunmap(reinterpret_cast<std::uint64_t>(reserved), page) == 0);
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Require(sceKernelMunmap(reinterpret_cast<std::uint64_t>(mapped), length) == 0);
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#if !defined(ANYPS5_ENABLE_ASAN) && !defined(ANYPS5_ENABLE_TSAN)
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*__error_nid_postfix() = 0;
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Require(mlock_nid_postfix(mapped, page) == -1 && *__error_nid_postfix() == 12);
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*__error_nid_postfix() = 0;
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Require(munlock_nid_postfix(mapped, page) == -1 && *__error_nid_postfix() == 12);
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#endif
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RequireLockAllInvalid(0);
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RequireLockAllInvalid(4);
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RequireLockAllInvalid(1 | 4);
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RequireLockAllInvalid(-1);
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RequireLockAllUnsupported(1);
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RequireLockAllUnsupported(2);
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RequireLockAllUnsupported(1 | 2);
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*__error_nid_postfix() = untouched;
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Require(munlockall_nid_postfix() == 0);
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Require(*__error_nid_postfix() == untouched);
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return 0;
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}
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