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Kernel: Only allow superuser to halt() the system (#342)

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Following the discussion in #334, shutdown must also have root-only
run permissions.
This commit is contained in:
Jesse 2019-07-19 21:08:26 +10:00 • committed by Andreas Kling
parent cd76b691fb
commit a5d80f7e3b
6 changed files with 31 additions and 10 deletions
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9
Kernel/Syscall.cpp
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@ -1,7 +1,7 @@
#include <Kernel/Arch/i386/CPU.h>
#include <Kernel/Console.h>
#include <Kernel/Process.h>
#include <Kernel/IO.h>
#include <Kernel/Process.h>
#include <Kernel/ProcessTracer.h>
#include <Kernel/Scheduler.h>
#include <Kernel/Syscall.h>
@ -285,12 +285,7 @@ static u32 handle(RegisterDump& regs, u32 function, u32 arg1, u32 arg2, u32 arg3
case Syscall::SC_sched_getparam:
return current->process().sys$sched_setparam((pid_t)arg1, (struct sched_param*)arg2);
case Syscall::SC_halt: {
dbgprintf("<%u> halting! acquiring locks...\n");
FS::lock_all();
dbgprintf("<%u> halting! syncing...\n");
FS::sync();
dbgprintf("<%u> halting! bye, friends...\n");
IO::out16(0x604, 0x2000);
return current->process().sys$halt();
break;
}
case Syscall::SC_reboot: {