mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-17 01:04:19 +08:00
um: kill um_uaccess.h
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Al Viro
Richard Weinberger
parent
ece67c8697
commit
fced95cacf
@ -6,15 +6,15 @@
|
||||
#ifndef __UM_UACCESS_H
|
||||
#define __UM_UACCESS_H
|
||||
|
||||
#include <asm/errno.h>
|
||||
#include <asm/processor.h>
|
||||
|
||||
/* thread_info has a mm_segment_t in it, so put the definition up here */
|
||||
typedef struct {
|
||||
unsigned long seg;
|
||||
} mm_segment_t;
|
||||
|
||||
#include "linux/thread_info.h"
|
||||
#include <linux/thread_info.h>
|
||||
#include <linux/errno.h>
|
||||
#include <asm/processor.h>
|
||||
#include <asm/elf.h>
|
||||
|
||||
#define VERIFY_READ 0
|
||||
#define VERIFY_WRITE 1
|
||||
@ -38,7 +38,86 @@ typedef struct {
|
||||
|
||||
#define segment_eq(a, b) ((a).seg == (b).seg)
|
||||
|
||||
#include "um_uaccess.h"
|
||||
#define __under_task_size(addr, size) \
|
||||
(((unsigned long) (addr) < TASK_SIZE) && \
|
||||
(((unsigned long) (addr) + (size)) < TASK_SIZE))
|
||||
|
||||
#define __access_ok_vsyscall(type, addr, size) \
|
||||
((type == VERIFY_READ) && \
|
||||
((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)))
|
||||
|
||||
#define access_ok(type, addr, size) \
|
||||
(__addr_range_nowrap(addr, size) && \
|
||||
(__under_task_size(addr, size) || \
|
||||
__access_ok_vsyscall(type, addr, size) || \
|
||||
segment_eq(get_fs(), KERNEL_DS)))
|
||||
|
||||
extern int copy_from_user(void *to, const void __user *from, int n);
|
||||
extern int copy_to_user(void __user *to, const void *from, int n);
|
||||
|
||||
/*
|
||||
* strncpy_from_user: - Copy a NUL terminated string from userspace.
|
||||
* @dst: Destination address, in kernel space. This buffer must be at
|
||||
* least @count bytes long.
|
||||
* @src: Source address, in user space.
|
||||
* @count: Maximum number of bytes to copy, including the trailing NUL.
|
||||
*
|
||||
* Copies a NUL-terminated string from userspace to kernel space.
|
||||
*
|
||||
* On success, returns the length of the string (not including the trailing
|
||||
* NUL).
|
||||
*
|
||||
* If access to userspace fails, returns -EFAULT (some data may have been
|
||||
* copied).
|
||||
*
|
||||
* If @count is smaller than the length of the string, copies @count bytes
|
||||
* and returns @count.
|
||||
*/
|
||||
|
||||
extern int strncpy_from_user(char *dst, const char __user *src, int count);
|
||||
|
||||
/*
|
||||
* __clear_user: - Zero a block of memory in user space, with less checking.
|
||||
* @to: Destination address, in user space.
|
||||
* @n: Number of bytes to zero.
|
||||
*
|
||||
* Zero a block of memory in user space. Caller must check
|
||||
* the specified block with access_ok() before calling this function.
|
||||
*
|
||||
* Returns number of bytes that could not be cleared.
|
||||
* On success, this will be zero.
|
||||
*/
|
||||
extern int __clear_user(void __user *mem, int len);
|
||||
|
||||
/*
|
||||
* clear_user: - Zero a block of memory in user space.
|
||||
* @to: Destination address, in user space.
|
||||
* @n: Number of bytes to zero.
|
||||
*
|
||||
* Zero a block of memory in user space.
|
||||
*
|
||||
* Returns number of bytes that could not be cleared.
|
||||
* On success, this will be zero.
|
||||
*/
|
||||
extern int clear_user(void __user *mem, int len);
|
||||
|
||||
/*
|
||||
* strlen_user: - Get the size of a string in user space.
|
||||
* @str: The string to measure.
|
||||
* @n: The maximum valid length
|
||||
*
|
||||
* Get the size of a NUL-terminated string in user space.
|
||||
*
|
||||
* Returns the size of the string INCLUDING the terminating NUL.
|
||||
* On exception, returns 0.
|
||||
* If the string is too long, returns a value greater than @n.
|
||||
*/
|
||||
extern int strnlen_user(const void __user *str, int len);
|
||||
|
||||
#define __copy_from_user(to, from, n) copy_from_user(to, from, n)
|
||||
|
||||
|
||||
@ -1,94 +0,0 @@
|
||||
/*
|
||||
* Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
|
||||
* Licensed under the GPL
|
||||
*/
|
||||
|
||||
#ifndef __ARCH_UM_UACCESS_H
|
||||
#define __ARCH_UM_UACCESS_H
|
||||
|
||||
#include <asm/elf.h>
|
||||
#include <asm/fixmap.h>
|
||||
#include "sysdep/archsetjmp.h"
|
||||
|
||||
#define __under_task_size(addr, size) \
|
||||
(((unsigned long) (addr) < TASK_SIZE) && \
|
||||
(((unsigned long) (addr) + (size)) < TASK_SIZE))
|
||||
|
||||
#define __access_ok_vsyscall(type, addr, size) \
|
||||
((type == VERIFY_READ) && \
|
||||
((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)))
|
||||
|
||||
#define access_ok(type, addr, size) \
|
||||
(__addr_range_nowrap(addr, size) && \
|
||||
(__under_task_size(addr, size) || \
|
||||
__access_ok_vsyscall(type, addr, size) || \
|
||||
segment_eq(get_fs(), KERNEL_DS)))
|
||||
|
||||
extern int copy_from_user(void *to, const void __user *from, int n);
|
||||
extern int copy_to_user(void __user *to, const void *from, int n);
|
||||
|
||||
/*
|
||||
* strncpy_from_user: - Copy a NUL terminated string from userspace.
|
||||
* @dst: Destination address, in kernel space. This buffer must be at
|
||||
* least @count bytes long.
|
||||
* @src: Source address, in user space.
|
||||
* @count: Maximum number of bytes to copy, including the trailing NUL.
|
||||
*
|
||||
* Copies a NUL-terminated string from userspace to kernel space.
|
||||
*
|
||||
* On success, returns the length of the string (not including the trailing
|
||||
* NUL).
|
||||
*
|
||||
* If access to userspace fails, returns -EFAULT (some data may have been
|
||||
* copied).
|
||||
*
|
||||
* If @count is smaller than the length of the string, copies @count bytes
|
||||
* and returns @count.
|
||||
*/
|
||||
|
||||
extern int strncpy_from_user(char *dst, const char __user *src, int count);
|
||||
|
||||
/*
|
||||
* __clear_user: - Zero a block of memory in user space, with less checking.
|
||||
* @to: Destination address, in user space.
|
||||
* @n: Number of bytes to zero.
|
||||
*
|
||||
* Zero a block of memory in user space. Caller must check
|
||||
* the specified block with access_ok() before calling this function.
|
||||
*
|
||||
* Returns number of bytes that could not be cleared.
|
||||
* On success, this will be zero.
|
||||
*/
|
||||
extern int __clear_user(void __user *mem, int len);
|
||||
|
||||
/*
|
||||
* clear_user: - Zero a block of memory in user space.
|
||||
* @to: Destination address, in user space.
|
||||
* @n: Number of bytes to zero.
|
||||
*
|
||||
* Zero a block of memory in user space.
|
||||
*
|
||||
* Returns number of bytes that could not be cleared.
|
||||
* On success, this will be zero.
|
||||
*/
|
||||
extern int clear_user(void __user *mem, int len);
|
||||
|
||||
/*
|
||||
* strlen_user: - Get the size of a string in user space.
|
||||
* @str: The string to measure.
|
||||
* @n: The maximum valid length
|
||||
*
|
||||
* Get the size of a NUL-terminated string in user space.
|
||||
*
|
||||
* Returns the size of the string INCLUDING the terminating NUL.
|
||||
* On exception, returns 0.
|
||||
* If the string is too long, returns a value greater than @n.
|
||||
*/
|
||||
extern int strnlen_user(const void __user *str, int len);
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user