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 With SKAS0 mode (separated kernel address space using 0 host patches), default since 2005, SKAS3/4 is obsolete and can be removed.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>
57 lines
897 B
C
57 lines
897 B
C
/*
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* Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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* Licensed under the GPL
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*/
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#include <linux/sched.h>
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#include <linux/spinlock.h>
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#include <linux/slab.h>
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#include <linux/oom.h>
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#include <kern_util.h>
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#include <os.h>
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#include <skas.h>
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void (*pm_power_off)(void);
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static void kill_off_processes(void)
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{
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struct task_struct *p;
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int pid;
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read_lock(&tasklist_lock);
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for_each_process(p) {
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struct task_struct *t;
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t = find_lock_task_mm(p);
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if (!t)
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continue;
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pid = t->mm->context.id.u.pid;
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task_unlock(t);
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os_kill_ptraced_process(pid, 1);
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}
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read_unlock(&tasklist_lock);
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}
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void uml_cleanup(void)
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{
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kmalloc_ok = 0;
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do_uml_exitcalls();
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kill_off_processes();
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}
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void machine_restart(char * __unused)
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{
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uml_cleanup();
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reboot_skas();
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}
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void machine_power_off(void)
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{
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uml_cleanup();
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halt_skas();
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}
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void machine_halt(void)
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{
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machine_power_off();
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}
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