Contributors: 4
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Al Viro |
84 |
48.84% |
3 |
50.00% |
| Richard Weinberger |
65 |
37.79% |
1 |
16.67% |
| Linus Torvalds |
21 |
12.21% |
1 |
16.67% |
| Alex Dewar |
2 |
1.16% |
1 |
16.67% |
| Total |
172 |
|
6 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Copyright (C) 2015 Richard Weinberger (richard@nod.at)
*/
#ifndef __UM_UACCESS_H
#define __UM_UACCESS_H
#include <asm/elf.h>
#define __under_task_size(addr, size) \
(((unsigned long) (addr) < TASK_SIZE) && \
(((unsigned long) (addr) + (size)) < TASK_SIZE))
#define __access_ok_vsyscall(addr, size) \
(((unsigned long) (addr) >= FIXADDR_USER_START) && \
((unsigned long) (addr) + (size) <= FIXADDR_USER_END) && \
((unsigned long) (addr) + (size) >= (unsigned long)(addr)))
#define __addr_range_nowrap(addr, size) \
((unsigned long) (addr) <= ((unsigned long) (addr) + (size)))
extern unsigned long raw_copy_from_user(void *to, const void __user *from, unsigned long n);
extern unsigned long raw_copy_to_user(void __user *to, const void *from, unsigned long n);
extern unsigned long __clear_user(void __user *mem, unsigned long len);
static inline int __access_ok(unsigned long addr, unsigned long size);
/* Teach asm-generic/uaccess.h that we have C functions for these. */
#define __access_ok __access_ok
#define __clear_user __clear_user
#define INLINE_COPY_FROM_USER
#define INLINE_COPY_TO_USER
#include <asm-generic/uaccess.h>
static inline int __access_ok(unsigned long addr, unsigned long size)
{
return __addr_range_nowrap(addr, size) &&
(__under_task_size(addr, size) ||
__access_ok_vsyscall(addr, size) ||
uaccess_kernel());
}
#endif