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Kernel+Userland: Addd reboot syscall (#334)

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Rolling with the theme of adding a dialog to shutdown the machine, it is
probably nice to have a way to reboot the machine without performing a full
system powerdown.

A reboot program has been added to `/bin/` as well as a corresponding
`syscall` (SC_reboot). This syscall works by attempting to pulse the 8042
keyboard controller. Note that this is NOT supported on  new machines, and
should only be a fallback until we have proper ACPI support.

The implementation causes a triple fault in QEMU, which then restarts the
system. The filesystems are locked and synchronized before this occurs,
so there shouldn't be any corruption etctera.
This commit is contained in:
Jesse 2019-07-19 17:58:12 +10:00 • committed by Andreas Kling
commit a27c9e3e01
Notes: sideshowbarker 2024-07-19 13:10:28 +09:00
7 changed files with 45 additions and 2 deletions
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15
Userland/reboot.cpp Normal file
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#include <stdio.h>
#include <unistd.h>
int main(int, char**)
{
if (reboot() < 0){
perror("reboot");
return 1;
}
return 0;
}