1 /* 2 * Handling of different ABIs (personalities). 3 * 4 * We group personalities into execution domains which have their 5 * own handlers for kernel entry points, signal mapping, etc... 6 * 7 * 2001-05-06 Complete rewrite, Christoph Hellwig (hch@infradead.org) 8 */ 9 10 #include <linux/init.h> 11 #include <linux/kernel.h> 12 #include <linux/kmod.h> 13 #include <linux/module.h> 14 #include <linux/personality.h> 15 #include <linux/proc_fs.h> 16 #include <linux/sched.h> 17 #include <linux/seq_file.h> 18 #include <linux/syscalls.h> 19 #include <linux/sysctl.h> 20 #include <linux/types.h> 21 #include <linux/fs_struct.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 execdomains_proc_open(struct inode *inode, struct file *file) 31 { 32 return single_open(file, execdomains_proc_show, NULL); 33 } 34 35 static const struct file_operations execdomains_proc_fops = { 36 .open = execdomains_proc_open, 37 .read = seq_read, 38 .llseek = seq_lseek, 39 .release = single_release, 40 }; 41 42 static int __init proc_execdomains_init(void) 43 { 44 proc_create("execdomains", 0, NULL, &execdomains_proc_fops); 45 return 0; 46 } 47 module_init(proc_execdomains_init); 48 #endif 49 50 SYSCALL_DEFINE1(personality, unsigned int, personality) 51 { 52 unsigned int old = current->personality; 53 54 if (personality != 0xffffffff) 55 set_personality(personality); 56 57 return old; 58 } 59