Linux preempt-rt

Check our new training course

Real-Time Linux with PREEMPT_RT

Check our new training course
with Creative Commons CC-BY-SA
lecture and lab materials

Bootlin logo

Elixir Cross Referencer

// SPDX-License-Identifier: GPL-2.0
 * Handling of different ABIs (personalities).
 * We group personalities into execution domains which have their
 * own handlers for kernel entry points, signal mapping, etc...
 * 2001-05-06	Complete rewrite,  Christoph Hellwig (

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/kmod.h>
#include <linux/module.h>
#include <linux/personality.h>
#include <linux/proc_fs.h>
#include <linux/sched.h>
#include <linux/seq_file.h>
#include <linux/syscalls.h>
#include <linux/sysctl.h>
#include <linux/types.h>
#include <linux/fs_struct.h>

static int execdomains_proc_show(struct seq_file *m, void *v)
	seq_puts(m, "0-0\tLinux           \t[kernel]\n");
	return 0;

static int execdomains_proc_open(struct inode *inode, struct file *file)
	return single_open(file, execdomains_proc_show, NULL);

static const struct file_operations execdomains_proc_fops = {
	.open		= execdomains_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,

static int __init proc_execdomains_init(void)
	proc_create("execdomains", 0, NULL, &execdomains_proc_fops);
	return 0;

SYSCALL_DEFINE1(personality, unsigned int, personality)
	unsigned int old = current->personality;

	if (personality != 0xffffffff)

	return old;