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Commit | Line | Data |
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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 | } |