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 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 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
