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test(libkernel): keep JIT shared memory descriptors in step across dup2

This commit is contained in:
Yossi Yadgar 2026-10-11 19:41:57 +03:00 committed by Adrià Franch
parent 7d3dd554da
commit 7c473fa398
1 changed files with 30 additions and 0 deletions
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30
core/libs/tests/GuestJitSharedMemory.cpp
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@ -14,6 +14,7 @@ int APS5_VABI sceKernelJitMapSharedMemory(int, int, void**);
int APS5_VABI sceKernelMunmap(void*, std::size_t);
int APS5_VABI close_nid_postfix(int);
int APS5_VABI dup_nid_postfix(int);
int APS5_VABI dup2_nid_postfix(int, int);
int APS5_VABI shm_open_nid_postfix(const char*, int, int);
}
@ -100,6 +101,34 @@ void OneViewWritesAndRuns() {
Require(close_nid_postfix(duplicate) == 0);
}
void Dup2KeepsTheDescriptorTableInStep() {
const int fd = Create(nullptr, Read | Write);
const int target = shm_open_nid_postfix(reinterpret_cast<const char*>(1), 0x2, 0600);
Require(target >= 0 && target != fd);
Require(dup2_nid_postfix(fd, target) == target);
auto* writable = static_cast<unsigned char*>(Map(fd, Read | Write));
auto* readable = static_cast<unsigned char*>(Map(target, Read));
writable[0x100] = 0x77;
Require(readable[0x100] == 0x77);
void* address = nullptr;
Require(sceKernelJitMapSharedMemory(target, Read | Execute, &address) == SCE_KERNEL_ERROR_EACCES);
Require(dup2_nid_postfix(fd, fd) == fd);
auto* same = static_cast<unsigned char*>(Map(fd, Read));
Require(same[0x100] == 0x77);
const int plain = shm_open_nid_postfix(reinterpret_cast<const char*>(1), 0x2, 0600);
Require(plain >= 0);
Require(dup2_nid_postfix(plain, target) == target);
address = nullptr;
Require(sceKernelJitMapSharedMemory(target, Read, &address) == SCE_KERNEL_ERROR_EBADF);
Require(address == nullptr);
Require(sceKernelMunmap(same, Size) == 0);
Require(sceKernelMunmap(readable, Size) == 0);
Require(sceKernelMunmap(writable, Size) == 0);
Require(close_nid_postfix(plain) == 0);
Require(close_nid_postfix(target) == 0);
Require(close_nid_postfix(fd) == 0);
}
void InvalidArgumentsAreRejected() {
int fd = -1;
Require(sceKernelJitCreateSharedMemory(nullptr, 0, Read | Write | Execute, &fd) == SCE_KERNEL_ERROR_EINVAL);
@ -140,5 +169,6 @@ void InvalidArgumentsAreRejected() {
int main() {
WriteThroughAliasRunsThroughExecutableView();
OneViewWritesAndRuns();
Dup2KeepsTheDescriptorTableInStep();
InvalidArgumentsAreRejected();
}