d0b5e15f0c
Before we had SKAS0 UML had two modes of operation TT (tracing thread) and SKAS3/4 (separated kernel address space). TT was known to be insecure and got removed a long time ago. SKAS3/4 required a few (3 or 4) patches on the host side which never went mainline. The last host patch is 10 years old. With SKAS0 mode (separated kernel address space using 0 host patches), default since 2005, SKAS3/4 is obsolete and can be removed. Signed-off-by: Richard Weinberger <richard@nod.at>
58 lines
897 B
C
58 lines
897 B
C
/*
|
|
* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#include <linux/sched.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/oom.h>
|
|
#include <kern_util.h>
|
|
#include <os.h>
|
|
#include <skas.h>
|
|
|
|
void (*pm_power_off)(void);
|
|
|
|
static void kill_off_processes(void)
|
|
{
|
|
struct task_struct *p;
|
|
int pid;
|
|
|
|
read_lock(&tasklist_lock);
|
|
for_each_process(p) {
|
|
struct task_struct *t;
|
|
|
|
t = find_lock_task_mm(p);
|
|
if (!t)
|
|
continue;
|
|
pid = t->mm->context.id.u.pid;
|
|
task_unlock(t);
|
|
os_kill_ptraced_process(pid, 1);
|
|
}
|
|
read_unlock(&tasklist_lock);
|
|
}
|
|
|
|
void uml_cleanup(void)
|
|
{
|
|
kmalloc_ok = 0;
|
|
do_uml_exitcalls();
|
|
kill_off_processes();
|
|
}
|
|
|
|
void machine_restart(char * __unused)
|
|
{
|
|
uml_cleanup();
|
|
reboot_skas();
|
|
}
|
|
|
|
void machine_power_off(void)
|
|
{
|
|
uml_cleanup();
|
|
halt_skas();
|
|
}
|
|
|
|
void machine_halt(void)
|
|
{
|
|
machine_power_off();
|
|
}
|