1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0
21da177e4SLinus Torvalds /*
31da177e4SLinus Torvalds * Handling of different ABIs (personalities).
41da177e4SLinus Torvalds *
51da177e4SLinus Torvalds * We group personalities into execution domains which have their
61da177e4SLinus Torvalds * own handlers for kernel entry points, signal mapping, etc...
71da177e4SLinus Torvalds *
81da177e4SLinus Torvalds * 2001-05-06 Complete rewrite, Christoph Hellwig (hch@infradead.org)
91da177e4SLinus Torvalds */
101da177e4SLinus Torvalds
111da177e4SLinus Torvalds #include <linux/init.h>
121da177e4SLinus Torvalds #include <linux/kernel.h>
131da177e4SLinus Torvalds #include <linux/kmod.h>
141da177e4SLinus Torvalds #include <linux/module.h>
151da177e4SLinus Torvalds #include <linux/personality.h>
166e62775eSAlexey Dobriyan #include <linux/proc_fs.h>
171da177e4SLinus Torvalds #include <linux/sched.h>
186e62775eSAlexey Dobriyan #include <linux/seq_file.h>
191da177e4SLinus Torvalds #include <linux/syscalls.h>
201da177e4SLinus Torvalds #include <linux/sysctl.h>
211da177e4SLinus Torvalds #include <linux/types.h>
221da177e4SLinus Torvalds
236e62775eSAlexey Dobriyan #ifdef CONFIG_PROC_FS
execdomains_proc_show(struct seq_file * m,void * v)246e62775eSAlexey Dobriyan static int execdomains_proc_show(struct seq_file *m, void *v)
251da177e4SLinus Torvalds {
26973f911fSRichard Weinberger seq_puts(m, "0-0\tLinux \t[kernel]\n");
276e62775eSAlexey Dobriyan return 0;
281da177e4SLinus Torvalds }
291da177e4SLinus Torvalds
proc_execdomains_init(void)306e62775eSAlexey Dobriyan static int __init proc_execdomains_init(void)
316e62775eSAlexey Dobriyan {
32*3f3942acSChristoph Hellwig proc_create_single("execdomains", 0, NULL, execdomains_proc_show);
336e62775eSAlexey Dobriyan return 0;
346e62775eSAlexey Dobriyan }
356e62775eSAlexey Dobriyan module_init(proc_execdomains_init);
366e62775eSAlexey Dobriyan #endif
376e62775eSAlexey Dobriyan
SYSCALL_DEFINE1(personality,unsigned int,personality)38485d5276SOleg Nesterov SYSCALL_DEFINE1(personality, unsigned int, personality)
391da177e4SLinus Torvalds {
40485d5276SOleg Nesterov unsigned int old = current->personality;
411da177e4SLinus Torvalds
422ee7c922SOleg Nesterov if (personality != 0xffffffff)
431da177e4SLinus Torvalds set_personality(personality);
441da177e4SLinus Torvalds
45485d5276SOleg Nesterov return old;
461da177e4SLinus Torvalds }
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