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Kernel: Mark sys$sigreturn as not needing the big lock

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This syscall is only concerned with the current thread (except in the
case of a pledge violation, when it will add some details about that
to the process coredump metadata. That stuff is already serialized.)
This commit is contained in:
Andreas Kling 2023-04-03 16:17:21 +02:00
parent a7212a7488
commit 374f4aeab9
2 changed files with 3 additions and 3 deletions
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2
Kernel/API/Syscall.h
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@ -178,7 +178,7 @@ enum class NeedsBigProcessLock {
S(sigaltstack, NeedsBigProcessLock::Yes) \
S(sigpending, NeedsBigProcessLock::Yes) \
S(sigprocmask, NeedsBigProcessLock::Yes) \
S(sigreturn, NeedsBigProcessLock::Yes) \
S(sigreturn, NeedsBigProcessLock::No) \
S(sigsuspend, NeedsBigProcessLock::Yes) \
S(sigtimedwait, NeedsBigProcessLock::Yes) \
S(socket, NeedsBigProcessLock::No) \

4
Kernel/Syscalls/sigaction.cpp
View file

@ -75,9 +75,9 @@ ErrorOr<FlatPtr> Process::sys$sigaction(int signum, Userspace<sigaction const*>
return 0;
}
ErrorOr<FlatPtr> Process::sys$sigreturn([[maybe_unused]] RegisterState& registers)
ErrorOr<FlatPtr> Process::sys$sigreturn(RegisterState& registers)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
VERIFY_NO_PROCESS_BIG_LOCK(this);
TRY(require_promise(Pledge::stdio));
SmapDisabler disabler;