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Kernel: Fix sys$waitid(P_ALL, WNOHANG) return value

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According to POSIX, waitid() should fill si_signo and si_pid members
with zeroes if there are no children that have already changed their
state by the time of the call. Let's just fill the whole structure
with zeroes to avoid leaking kernel memory.
This commit is contained in:
Sergey Bugaev 2020-02-06 16:02:49 +03:00
parent f46d80ac4f
commit 1b866bbf42
Notes: sideshowbarker 2024-07-19 09:34:35 +09:00 
Author: https://github.com/bugaevc
Commit: https://github.com/SerenityOS/serenity/commit/1b866bbf42a
1 changed files with 1 additions and 1 deletions
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2
Kernel/Process.cpp
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@ -2314,7 +2314,7 @@ KResultOr<siginfo_t> Process::do_waitid(idtype_t idtype, int id, int options)
// FIXME: Figure out what WNOHANG should do with stopped children.
if (idtype == P_ALL) {
InterruptDisabler disabler;
siginfo_t siginfo;
siginfo_t siginfo = { 0 };
for_each_child([&siginfo](Process& process) {
if (process.is_dead())
siginfo = reap(process);