Line data    Source code

       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           0 : static int execdomains_proc_show(struct seq_file *m, void *v)
      25             : {
      26           0 :         seq_puts(m, "0-0\tLinux           \t[kernel]\n");
      27           0 :         return 0;
      28             : }
      29             : 
      30           1 : static int __init proc_execdomains_init(void)
      31             : {
      32           1 :         proc_create_single("execdomains", 0, NULL, execdomains_proc_show);
      33           1 :         return 0;
      34             : }
      35             : module_init(proc_execdomains_init);
      36             : #endif
      37             : 
      38           0 : SYSCALL_DEFINE1(personality, unsigned int, personality)
      39             : {
      40           0 :         unsigned int old = current->personality;
      41             : 
      42           0 :         if (personality != 0xffffffff)
      43           0 :                 set_personality(personality);
      44             : 
      45           0 :         return old;
      46             : }