diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-generic/uaccess.h | 2 | ||||
| -rw-r--r-- | include/linux/uaccess.h | 19 |
2 files changed, 19 insertions, 2 deletions
diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess.h index 10ffa8b5c117..0870fa11a7c5 100644 --- a/include/asm-generic/uaccess.h +++ b/include/asm-generic/uaccess.h @@ -77,8 +77,6 @@ do { \ goto err_label; \ } while (0) -#define HAVE_GET_KERNEL_NOFAULT 1 - static inline __must_check unsigned long raw_copy_from_user(void *to, const void __user * from, unsigned long n) { diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h index ac0394087f7d..67e9bc94dc40 100644 --- a/include/linux/uaccess.h +++ b/include/linux/uaccess.h @@ -368,6 +368,25 @@ long strncpy_from_user_nofault(char *dst, const void __user *unsafe_addr, long count); long strnlen_user_nofault(const void __user *unsafe_addr, long count); +#ifndef __get_kernel_nofault +#define __get_kernel_nofault(dst, src, type, label) \ +do { \ + type __user *p = (type __force __user *)(src); \ + type data; \ + if (__get_user(data, p)) \ + goto label; \ + *(type *)dst = data; \ +} while (0) + +#define __put_kernel_nofault(dst, src, type, label) \ +do { \ + type __user *p = (type __force __user *)(dst); \ + type data = *(type *)src; \ + if (__put_user(data, p)) \ + goto label; \ +} while (0) +#endif + /** * get_kernel_nofault(): safely attempt to read from a location * @val: read into this variable |