1*cf84ac9aSAndroid Build Coastguard Worker /*
2*cf84ac9aSAndroid Build Coastguard Worker * Copyright (c) 2016 Dmitry V. Levin <[email protected]>
3*cf84ac9aSAndroid Build Coastguard Worker * Copyright (c) 2016-2018 The strace developers.
4*cf84ac9aSAndroid Build Coastguard Worker * All rights reserved.
5*cf84ac9aSAndroid Build Coastguard Worker *
6*cf84ac9aSAndroid Build Coastguard Worker * Redistribution and use in source and binary forms, with or without
7*cf84ac9aSAndroid Build Coastguard Worker * modification, are permitted provided that the following conditions
8*cf84ac9aSAndroid Build Coastguard Worker * are met:
9*cf84ac9aSAndroid Build Coastguard Worker * 1. Redistributions of source code must retain the above copyright
10*cf84ac9aSAndroid Build Coastguard Worker * notice, this list of conditions and the following disclaimer.
11*cf84ac9aSAndroid Build Coastguard Worker * 2. Redistributions in binary form must reproduce the above copyright
12*cf84ac9aSAndroid Build Coastguard Worker * notice, this list of conditions and the following disclaimer in the
13*cf84ac9aSAndroid Build Coastguard Worker * documentation and/or other materials provided with the distribution.
14*cf84ac9aSAndroid Build Coastguard Worker * 3. The name of the author may not be used to endorse or promote products
15*cf84ac9aSAndroid Build Coastguard Worker * derived from this software without specific prior written permission.
16*cf84ac9aSAndroid Build Coastguard Worker *
17*cf84ac9aSAndroid Build Coastguard Worker * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18*cf84ac9aSAndroid Build Coastguard Worker * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19*cf84ac9aSAndroid Build Coastguard Worker * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20*cf84ac9aSAndroid Build Coastguard Worker * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21*cf84ac9aSAndroid Build Coastguard Worker * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22*cf84ac9aSAndroid Build Coastguard Worker * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23*cf84ac9aSAndroid Build Coastguard Worker * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24*cf84ac9aSAndroid Build Coastguard Worker * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25*cf84ac9aSAndroid Build Coastguard Worker * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26*cf84ac9aSAndroid Build Coastguard Worker * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27*cf84ac9aSAndroid Build Coastguard Worker */
28*cf84ac9aSAndroid Build Coastguard Worker
29*cf84ac9aSAndroid Build Coastguard Worker #include "defs.h"
30*cf84ac9aSAndroid Build Coastguard Worker #include "ptrace.h"
31*cf84ac9aSAndroid Build Coastguard Worker
32*cf84ac9aSAndroid Build Coastguard Worker int
upoke(struct tcb * tcp,unsigned long off,kernel_ulong_t val)33*cf84ac9aSAndroid Build Coastguard Worker upoke(struct tcb *tcp, unsigned long off, kernel_ulong_t val)
34*cf84ac9aSAndroid Build Coastguard Worker {
35*cf84ac9aSAndroid Build Coastguard Worker if (ptrace(PTRACE_POKEUSER, tcp->pid, off, val)) {
36*cf84ac9aSAndroid Build Coastguard Worker if (errno != ESRCH)
37*cf84ac9aSAndroid Build Coastguard Worker perror_msg("upoke: PTRACE_POKEUSER pid:%d @%#lx)",
38*cf84ac9aSAndroid Build Coastguard Worker tcp->pid, off);
39*cf84ac9aSAndroid Build Coastguard Worker return -1;
40*cf84ac9aSAndroid Build Coastguard Worker }
41*cf84ac9aSAndroid Build Coastguard Worker return 0;
42*cf84ac9aSAndroid Build Coastguard Worker }
43