Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) | |
3 | * Licensed under the GPL | |
4 | */ | |
5 | ||
6 | #include "linux/sched.h" | |
7 | #include "asm/uaccess.h" | |
8 | ||
9 | int copy_from_user_tt(void *to, const void __user *from, int n) | |
10 | { | |
7a590611 | 11 | if(!access_ok(VERIFY_READ, from, n)) |
1da177e4 LT |
12 | return(n); |
13 | ||
14 | return(__do_copy_from_user(to, from, n, ¤t->thread.fault_addr, | |
15 | ¤t->thread.fault_catcher)); | |
16 | } | |
17 | ||
18 | int copy_to_user_tt(void __user *to, const void *from, int n) | |
19 | { | |
7a590611 | 20 | if(!access_ok(VERIFY_WRITE, to, n)) |
1da177e4 LT |
21 | return(n); |
22 | ||
23 | return(__do_copy_to_user(to, from, n, ¤t->thread.fault_addr, | |
24 | ¤t->thread.fault_catcher)); | |
25 | } | |
26 | ||
27 | int strncpy_from_user_tt(char *dst, const char __user *src, int count) | |
28 | { | |
29 | int n; | |
30 | ||
7a590611 | 31 | if(!access_ok(VERIFY_READ, src, 1)) |
1da177e4 LT |
32 | return(-EFAULT); |
33 | ||
34 | n = __do_strncpy_from_user(dst, src, count, | |
35 | ¤t->thread.fault_addr, | |
36 | ¤t->thread.fault_catcher); | |
37 | if(n < 0) return(-EFAULT); | |
38 | return(n); | |
39 | } | |
40 | ||
41 | int __clear_user_tt(void __user *mem, int len) | |
42 | { | |
43 | return(__do_clear_user(mem, len, | |
44 | ¤t->thread.fault_addr, | |
45 | ¤t->thread.fault_catcher)); | |
46 | } | |
47 | ||
48 | int clear_user_tt(void __user *mem, int len) | |
49 | { | |
7a590611 | 50 | if(!access_ok(VERIFY_WRITE, mem, len)) |
1da177e4 LT |
51 | return(len); |
52 | ||
53 | return(__do_clear_user(mem, len, ¤t->thread.fault_addr, | |
54 | ¤t->thread.fault_catcher)); | |
55 | } | |
56 | ||
57 | int strnlen_user_tt(const void __user *str, int len) | |
58 | { | |
59 | return(__do_strnlen_user(str, len, | |
60 | ¤t->thread.fault_addr, | |
61 | ¤t->thread.fault_catcher)); | |
62 | } | |
63 | ||
64 | /* | |
65 | * Overrides for Emacs so that we follow Linus's tabbing style. | |
66 | * Emacs will notice this stuff at the end of the file and automatically | |
67 | * adjust the settings for this buffer only. This must remain at the end | |
68 | * of the file. | |
69 | * --------------------------------------------------------------------------- | |
70 | * Local variables: | |
71 | * c-file-style: "linux" | |
72 | * End: | |
73 | */ |