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x32/Info: Only modify output in getrlimit/ugetrlimit if successful

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Avoids trampling over input data.
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LC committed 2026-07-10 07:49:44 -04:00
1 parent 5f2d19c7aa
commit d206b67ca8
1 file changed
+8 -4
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Source/Tools/LinuxEmulation/LinuxSyscalls/x32/Info.cpp
+8 -4
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@@ -99,8 +99,10 @@ void RegisterInfo(FEX::HLE::SyscallHandler* Handler) {
getrlimit, [](FEXCore::Core::CpuStateFrame* Frame, int resource, compat_ptr<FEX::HLE::x32::rlimit32<true>> rlim) -> uint64_t {
struct rlimit rlim64 {};
uint64_t Result = ::getrlimit(resource, &rlim64);
FaultSafeUserMemAccess::VerifyIsWritable(rlim, sizeof(*rlim));
*rlim = rlim64;
if (Result != -1) {
FaultSafeUserMemAccess::VerifyIsWritable(rlim, sizeof(*rlim));
*rlim = rlim64;
}
SYSCALL_ERRNO();
});
@@ -108,8 +110,10 @@ void RegisterInfo(FEX::HLE::SyscallHandler* Handler) {
ugetrlimit, [](FEXCore::Core::CpuStateFrame* Frame, int resource, compat_ptr<FEX::HLE::x32::rlimit32<false>> rlim) -> uint64_t {
struct rlimit rlim64 {};
uint64_t Result = ::getrlimit(resource, &rlim64);
FaultSafeUserMemAccess::VerifyIsWritable(rlim, sizeof(*rlim));
*rlim = rlim64;
if (Result != -1) {
FaultSafeUserMemAccess::VerifyIsWritable(rlim, sizeof(*rlim));
*rlim = rlim64;
}
SYSCALL_ERRNO();
});