1 /*-
2 * Copyright 2016 Mark Johnston <markj@FreeBSD.org>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26 #include <sys/cdefs.h>
27 #include <sys/types.h>
28 #include <sys/proc.h>
29 #include <sys/ptrace.h>
30
31 int
uread(proc_t * p,void * kaddr,size_t len,uintptr_t uaddr)32 uread(proc_t *p, void *kaddr, size_t len, uintptr_t uaddr)
33 {
34 ssize_t n;
35
36 n = proc_readmem(curthread, p, uaddr, kaddr, len);
37 if (n != len)
38 return (ENOMEM);
39 return (0);
40 }
41
42 int
uwrite(proc_t * p,void * kaddr,size_t len,uintptr_t uaddr)43 uwrite(proc_t *p, void *kaddr, size_t len, uintptr_t uaddr)
44 {
45 ssize_t n;
46
47 n = proc_writemem(curthread, p, uaddr, kaddr, len);
48 if (n != len)
49 return (ENOMEM);
50 return (0);
51 }
52