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Kernel: Don't allow to kill kernel processes

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The protection was only for SIGKILL before.
This commit is contained in:
Maciej Zygmanowski 2021-04-23 12:07:55 +02:00 • committed by Linus Groh
parent 072c264a04
commit 6efcc2fc99
1 changed files with 2 additions and 2 deletions
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4
Kernel/Syscalls/kill.cpp
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@ -14,8 +14,8 @@ KResult Process::do_kill(Process& process, int signal)
// FIXME: Should setuid processes have some special treatment here? // FIXME: Should setuid processes have some special treatment here?
if (!is_superuser() && euid() != process.uid() && uid() != process.uid()) if (!is_superuser() && euid() != process.uid() && uid() != process.uid())
return EPERM; return EPERM;
if (process.is_kernel_process() && signal == SIGKILL) { if (process.is_kernel_process()) {
dbgln("Aattempted to send SIGKILL to kernel process {} ({})", process.name(), process.pid()); dbgln("Attempted to send signal {} to kernel process {} ({})", signal, process.name(), process.pid());
return EPERM; return EPERM;
} }
if (signal != 0) if (signal != 0)