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UserspaceEmulator: Default-initialize the siginfo struct used in waitid

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Otherwise it'll have some random value from the stack, and the kernel
will not bother setting it to zero.
Also add a debug print and tweak the FIXME message.
This commit is contained in:
AnotherTest 2021-03-30 10:20:54 +04:30 committed by Andreas Kling
parent c4cf4ef111
commit cbd62c472e
Notes: sideshowbarker 2024-07-18 20:55:49 +09:00 
Author: https://github.com/alimpfard
Commit: https://github.com/SerenityOS/serenity/commit/cbd62c472e8
Pull-request: https://github.com/SerenityOS/serenity/pull/6021
1 changed files with 3 additions and 2 deletions
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5
Userland/DevTools/UserspaceEmulator/Emulator_syscalls.cpp
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@ -1358,7 +1358,7 @@ int Emulator::virt$waitid(FlatPtr params_addr)
mmu().copy_from_vm(&params, params_addr, sizeof(params));
Syscall::SC_waitid_params host_params = params;
siginfo info;
siginfo info {};
host_params.infop = &info;
int rc = syscall(SC_waitid, &host_params);
@ -1366,7 +1366,8 @@ int Emulator::virt$waitid(FlatPtr params_addr)
return rc;
if (info.si_addr) {
// FIXME: Translate this somehow.
// FIXME: Translate this somehow once we actually start setting it in the kernel.
dbgln("si_addr is set to {:p}, I did not expect this!", info.si_addr);
TODO();
}