/* | |
* Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk) | |
* Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) | |
* Licensed under the GPL | |
*/ | |
#include <stddef.h> | |
#include "longjmp.h" | |
unsigned long __do_user_copy(void *to, const void *from, int n, | |
void **fault_addr, jmp_buf **fault_catcher, | |
void (*op)(void *to, const void *from, | |
int n), int *faulted_out) | |
{ | |
unsigned long *faddrp = (unsigned long *) fault_addr, ret; | |
jmp_buf jbuf; | |
*fault_catcher = &jbuf; | |
if (UML_SETJMP(&jbuf) == 0) { | |
(*op)(to, from, n); | |
ret = 0; | |
*faulted_out = 0; | |
} | |
else { | |
ret = *faddrp; | |
*faulted_out = 1; | |
} | |
*fault_addr = NULL; | |
*fault_catcher = NULL; | |
return ret; | |
} | |