Lines Matching defs:from
11 unsigned long _copy_from_user(void *to, const void __user *from, unsigned long n)
15 if (!should_fail_usercopy() && likely(access_ok(from, n))) {
22 instrument_copy_from_user(to, from, n);
23 res = raw_copy_from_user(to, from, n);
33 unsigned long _copy_to_user(void __user *to, const void *from, unsigned long n)
39 instrument_copy_to_user(to, from, n);
40 n = raw_copy_to_user(to, from, n);
49 * @from: Source address, in userspace.
52 * This is effectively shorthand for "memchr_inv(from, 0, size) == NULL" for
61 int check_zeroed_user(const void __user *from, size_t size)
64 uintptr_t align = (uintptr_t) from % sizeof(unsigned long);
69 from -= align;
72 if (!user_read_access_begin(from, size))
75 unsafe_get_user(val, (unsigned long __user *) from, err_fault);
83 from += sizeof(unsigned long);
86 unsafe_get_user(val, (unsigned long __user *) from, err_fault);