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 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 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 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