cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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exec_domain.c (1094B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * Handling of different ABIs (personalities).
      4 *
      5 * We group personalities into execution domains which have their
      6 * own handlers for kernel entry points, signal mapping, etc...
      7 *
      8 * 2001-05-06	Complete rewrite,  Christoph Hellwig (hch@infradead.org)
      9 */
     10
     11#include <linux/init.h>
     12#include <linux/kernel.h>
     13#include <linux/kmod.h>
     14#include <linux/module.h>
     15#include <linux/personality.h>
     16#include <linux/proc_fs.h>
     17#include <linux/sched.h>
     18#include <linux/seq_file.h>
     19#include <linux/syscalls.h>
     20#include <linux/sysctl.h>
     21#include <linux/types.h>
     22
     23#ifdef CONFIG_PROC_FS
     24static int execdomains_proc_show(struct seq_file *m, void *v)
     25{
     26	seq_puts(m, "0-0\tLinux           \t[kernel]\n");
     27	return 0;
     28}
     29
     30static int __init proc_execdomains_init(void)
     31{
     32	proc_create_single("execdomains", 0, NULL, execdomains_proc_show);
     33	return 0;
     34}
     35module_init(proc_execdomains_init);
     36#endif
     37
     38SYSCALL_DEFINE1(personality, unsigned int, personality)
     39{
     40	unsigned int old = current->personality;
     41
     42	if (personality != 0xffffffff)
     43		set_personality(personality);
     44
     45	return old;
     46}