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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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15
Kernel/Process.cpp
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@ -2639,6 +2639,21 @@ int Process::sys$systrace(pid_t pid)
return fd;
}
int Process::sys$halt()
{
if (!is_superuser())
return -EPERM;
dbgprintf("acquiring FS locks...\n");
FS::lock_all();
dbgprintf("syncing mounted filesystems...\n");
FS::sync();
dbgprintf("attempting system shutdown...\n");
IO::out16(0x604, 0x2000);
return ESUCCESS;
}
int Process::sys$reboot()
{
if (!is_superuser())