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
execdomains_proc_show(struct seq_file * m,void * v)24 static 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
proc_execdomains_init(void)30 static int __init proc_execdomains_init(void)
31 {
32 proc_create_single("execdomains", 0, NULL, execdomains_proc_show);
33 return 0;
34 }
35 module_init(proc_execdomains_init);
36 #endif
37
SYSCALL_DEFINE1(personality,unsigned int,personality)38 SYSCALL_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