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Linux/kernel/exec_domain.c

  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 

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