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}
47