1 /*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <stdlib.h>
18 #include <unistd.h>
19
20 #include <cutils/debugger.h>
21 #include <cutils/sockets.h>
22
dump_tombstone(pid_t tid,char * pathbuf,size_t pathlen)23 int dump_tombstone(pid_t tid, char* pathbuf, size_t pathlen) {
24 int s = socket_local_client(DEBUGGER_SOCKET_NAME,
25 ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
26 if (s < 0) {
27 return -1;
28 }
29
30 debugger_msg_t msg;
31 msg.tid = tid;
32 msg.action = DEBUGGER_ACTION_DUMP_TOMBSTONE;
33
34 int result = 0;
35 if (TEMP_FAILURE_RETRY(write(s, &msg, sizeof(msg))) != sizeof(msg)) {
36 result = -1;
37 } else {
38 char ack;
39 if (TEMP_FAILURE_RETRY(read(s, &ack, 1)) != 1) {
40 result = -1;
41 } else {
42 if (pathbuf && pathlen) {
43 ssize_t n = TEMP_FAILURE_RETRY(read(s, pathbuf, pathlen - 1));
44 if (n <= 0) {
45 result = -1;
46 } else {
47 pathbuf[n] = '\0';
48 }
49 }
50 }
51 }
52 TEMP_FAILURE_RETRY(close(s));
53 return result;
54 }
55
dump_backtrace_to_file(pid_t tid,int fd)56 int dump_backtrace_to_file(pid_t tid, int fd) {
57 int s = socket_local_client(DEBUGGER_SOCKET_NAME,
58 ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
59 if (s < 0) {
60 return -1;
61 }
62
63 debugger_msg_t msg;
64 msg.tid = tid;
65 msg.action = DEBUGGER_ACTION_DUMP_BACKTRACE;
66
67 int result = 0;
68 if (TEMP_FAILURE_RETRY(write(s, &msg, sizeof(msg))) != sizeof(msg)) {
69 result = -1;
70 } else {
71 char ack;
72 if (TEMP_FAILURE_RETRY(read(s, &ack, 1)) != 1) {
73 result = -1;
74 } else {
75 char buffer[4096];
76 ssize_t n;
77 while ((n = TEMP_FAILURE_RETRY(read(s, buffer, sizeof(buffer)))) > 0) {
78 if (TEMP_FAILURE_RETRY(write(fd, buffer, n)) != n) {
79 result = -1;
80 break;
81 }
82 }
83 }
84 }
85 TEMP_FAILURE_RETRY(close(s));
86 return result;
87 }
88