diff -Naur ProCaptureForLinux_3589/src/sources/ospi/linux-file.c ProCaptureForLinux_3589_new/src/sources/ospi/linux-file.c
--- ProCaptureForLinux_3589/src/sources/ospi/linux-file.c	2017-08-17 02:46:07.000000000 -0700
+++ ProCaptureForLinux_3589_new/src/sources/ospi/linux-file.c	2017-11-13 20:18:50.842947380 -0800
@@ -7,8 +7,8 @@
 
 #include "linux-file.h"
 
-#include <asm/uaccess.h>
 #include <linux/sched.h>
+#include <asm/uaccess.h>
 
 struct file *linux_file_open(const char *path, int flags, int mode)
 {
@@ -28,27 +28,27 @@
     filp_close(file, NULL);
 }
 
-ssize_t linux_file_read(struct file *file, loff_t offset, unsigned char *data, size_t size)
+ssize_t linux_file_read(struct file *file, loff_t offset, const void *data, size_t size)
 {
     mm_segment_t oldfs;
     ssize_t ret;
 
     oldfs = get_fs();
     set_fs(get_ds());
-    ret = vfs_read(file, data, size, &offset);
+    ret = kernel_read(file, data, size, &offset);
     set_fs(oldfs);
 
     return ret;
 }
 
-ssize_t linux_file_write(struct file *file, loff_t offset, unsigned char *data, size_t size)
+ssize_t linux_file_write(struct file *file, loff_t offset, const void *data, size_t size)
 {
     mm_segment_t oldfs;
     ssize_t ret;
 
     oldfs = get_fs();
     set_fs(get_ds());
-    ret = vfs_write(file, data, size, &offset);
+    ret = kernel_write(file, data, size, &offset);
     set_fs(oldfs);
 
     return ret;
diff -Naur ProCaptureForLinux_3589/src/sources/ospi/linux-file.h ProCaptureForLinux_3589_new/src/sources/ospi/linux-file.h
--- ProCaptureForLinux_3589/src/sources/ospi/linux-file.h	2017-08-17 02:46:07.000000000 -0700
+++ ProCaptureForLinux_3589_new/src/sources/ospi/linux-file.h	2017-11-13 20:24:20.979690346 -0800
@@ -13,9 +13,9 @@
 
 void linux_file_close(struct file *file);
 
-ssize_t linux_file_read(struct file *file, loff_t offset, unsigned char *data, size_t size);
+ssize_t linux_file_read(struct file *file, loff_t offset, const void *data, size_t size);
 
-ssize_t linux_file_write(struct file *file, loff_t offset, unsigned char *data, size_t size);
+ssize_t linux_file_write(struct file *file, loff_t offset, const void *data, size_t size);
 
 #endif /* __LINUX_FILE_H__ */