diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/uaccess.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h index b9e538176349..c82dcea216b1 100644 --- a/include/linux/uaccess.h +++ b/include/linux/uaccess.h @@ -113,6 +113,18 @@ extern long probe_user_read(void *dst, const void __user *src, size_t size); extern long notrace probe_kernel_write(void *dst, const void *src, size_t size); extern long notrace __probe_kernel_write(void *dst, const void *src, size_t size); +/* + * probe_user_write(): safely attempt to write to a location in user space + * @dst: address to write to + * @src: pointer to the data that shall be written + * @size: size of the data chunk + * + * Safely write to address @dst from the buffer at @src. If a kernel fault + * happens, handle that and return -EFAULT. + */ +extern long notrace probe_user_write(void __user *dst, const void *src, size_t size); +extern long notrace __probe_user_write(void __user *dst, const void *src, size_t size); + extern long strncpy_from_unsafe(char *dst, const void *unsafe_addr, long count); extern long strncpy_from_unsafe_user(char *dst, const void __user *unsafe_addr, long count); |