debuggerd.c revision dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0
1dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* system/debuggerd/debuggerd.c 2dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** 3dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** Copyright 2006, The Android Open Source Project 4dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** 5dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** Licensed under the Apache License, Version 2.0 (the "License"); 6dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** you may not use this file except in compliance with the License. 7dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** You may obtain a copy of the License at 8dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** 9dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** http://www.apache.org/licenses/LICENSE-2.0 10dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** 11dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** Unless required by applicable law or agreed to in writing, software 12dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** distributed under the License is distributed on an "AS IS" BASIS, 13dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** See the License for the specific language governing permissions and 15dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** limitations under the License. 16dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project*/ 17dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 18dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdio.h> 19dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdlib.h> 20dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <unistd.h> 21dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <errno.h> 22dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <signal.h> 23dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <pthread.h> 24dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdarg.h> 25dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <fcntl.h> 26dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/types.h> 27dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <dirent.h> 28dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 29dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/ptrace.h> 30dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/wait.h> 31dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/exec_elf.h> 32dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/stat.h> 33dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 34dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/sockets.h> 35dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/logd.h> 36dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/sockets.h> 37dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/properties.h> 38dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/input.h> 40dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <private/android_filesystem_config.h> 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include "utility.h" 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* Main entry point to get the backtrace from the crashing process */ 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern int unwind_backtrace_with_ptrace(int tfd, pid_t pid, mapinfo *map, 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned int sp_list[], 48dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int *frame0_pc_sane, 49dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bool at_fault); 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic char **process_name_ptr; 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 53dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int logsocket = -1; 54dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 55dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define ANDROID_LOG_INFO 4 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* Log information onto the tombstone */ 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid _LOG(int tfd, bool in_tombstone_only, const char *fmt, ...) 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char buf[128]; 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project va_list ap; 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project va_start(ap, fmt); 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (tfd >= 0) { 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int len; 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project vsnprintf(buf, sizeof(buf), fmt, ap); 68dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len = strlen(buf); 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(tfd >= 0) write(tfd, buf, len); 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!in_tombstone_only) 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project __android_log_vprint(ANDROID_LOG_INFO, "DEBUG", fmt, ap); 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define LOG(fmt...) _LOG(-1, 0, fmt) 77dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#if 0 78dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define XLOG(fmt...) _LOG(-1, 0, fmt) 79dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#else 80dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define XLOG(fmt...) do {} while(0) 81dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 82dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project// 6f000000-6f01e000 rwxp 00000000 00:0c 16389419 /system/lib/libcomposer.so 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project// 012345678901234567890123456789012345678901234567890123456789 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project// 0 1 2 3 4 5 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectmapinfo *parse_maps_line(char *line) 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *mi; 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int len = strlen(line); 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 92dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(len < 1) return 0; 93dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project line[--len] = 0; 94dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 95dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(len < 50) return 0; 96dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(line[20] != 'x') return 0; 97dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 98dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi = malloc(sizeof(mapinfo) + (len - 47)); 99dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(mi == 0) return 0; 100dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 101dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->start = strtoul(line, 0, 16); 102dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->end = strtoul(line + 9, 0, 16); 103dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* To be filled in parse_exidx_info if the mapped section starts with 104dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * elf_header 105dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 106dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->exidx_start = mi->exidx_end = 0; 107dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->next = 0; 108dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strcpy(mi->name, line + 49); 109dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 110dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return mi; 111dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 112dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 113dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_build_info(int tfd) 114dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 115dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char fingerprint[PROPERTY_VALUE_MAX]; 116dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 117dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_get("ro.build.fingerprint", fingerprint, "unknown"); 118dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 119dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, "Build fingerprint: '%s'\n", fingerprint); 120dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 121dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 122dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 123dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_stack_and_code(int tfd, int pid, mapinfo *map, 124dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int unwind_depth, unsigned int sp_list[], 125dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int frame0_pc_sane, bool at_fault) 126dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 127dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned int sp, pc, p, end, data; 128dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct pt_regs r; 129dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int sp_depth; 130dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bool only_in_tombstone = !at_fault; 131dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 132dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ptrace(PTRACE_GETREGS, pid, 0, &r)) return; 133dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sp = r.ARM_sp; 134dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pc = r.ARM_pc; 135dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 136dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Died because calling the weeds - dump 137dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * the code around the PC in the next frame instead. 138dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 139dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (frame0_pc_sane == 0) { 140dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pc = r.ARM_lr; 141dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 142dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 143dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, true, "code%s:\n", frame0_pc_sane ? "" : " (around frame #01)"); 144dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 145dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project end = p = pc & ~3; 146dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project p -= 16; 147dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 148dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Dump the code as: 149dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * PC contents 150dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 00008d34 fffffcd0 4c0eb530 b0934a0e 1c05447c 151dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 00008d44 f7ff18a0 490ced94 68035860 d0012b00 152dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 153dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while (p <= end) { 154dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int i; 155dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 156dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, true, " %08x ", p); 157dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (i = 0; i < 4; i++) { 158dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data = ptrace(PTRACE_PEEKTEXT, pid, (void*)p, NULL); 159dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, true, " %08x", data); 160dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project p += 4; 161dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 162dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, true, "\n", p); 163dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 164dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 165dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project p = sp - 64; 166dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project p &= ~3; 167dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (unwind_depth != 0) { 168dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (unwind_depth < STACK_CONTENT_DEPTH) { 169dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project end = sp_list[unwind_depth-1]; 170dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 171dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else { 172dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project end = sp_list[STACK_CONTENT_DEPTH-1]; 173dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 174dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 175dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else { 176dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project end = sp | 0x000000ff; 177dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project end += 0xff; 178dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 179dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 180dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, only_in_tombstone, "stack:\n"); 181dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 182dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* If the crash is due to PC == 0, there will be two frames that 183dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * have identical SP value. 184dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 185dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (sp_list[0] == sp_list[1]) { 186dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sp_depth = 1; 187dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 188dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else { 189dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sp_depth = 0; 190dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 191dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 192dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while (p <= end) { 193dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char *prompt; 194dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char level[16]; 195dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data = ptrace(PTRACE_PEEKTEXT, pid, (void*)p, NULL); 196dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (p == sp_list[sp_depth]) { 197dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(level, "#%02d", sp_depth++); 198dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prompt = level; 199dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 200dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else { 201dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prompt = " "; 202dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 203dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 204dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Print the stack content in the log for the first 3 frames. For the 205dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * rest only print them in the tombstone file. 206dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 207dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, (sp_depth > 2) || only_in_tombstone, 208dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "%s %08x %08x %s\n", prompt, p, data, 209dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project map_to_name(map, data, "")); 210dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project p += 4; 211dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 212dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* print another 64-byte of stack data after the last frame */ 213dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 214dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project end = p+64; 215dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while (p <= end) { 216dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data = ptrace(PTRACE_PEEKTEXT, pid, (void*)p, NULL); 217dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, (sp_depth > 2) || only_in_tombstone, 218dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project " %08x %08x %s\n", p, data, 219dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project map_to_name(map, data, "")); 220dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project p += 4; 221dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 222dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 223dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 224dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_pc_and_lr(int tfd, int pid, mapinfo *map, int unwound_level, 225dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bool at_fault) 226dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 227dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct pt_regs r; 228dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 229dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ptrace(PTRACE_GETREGS, pid, 0, &r)) { 230dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, !at_fault, "tid %d not responding!\n", pid); 231dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return; 232dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 233dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 234dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (unwound_level == 0) { 235dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, !at_fault, " #%02d pc %08x %s\n", 0, r.ARM_pc, 236dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project map_to_name(map, r.ARM_pc, "<unknown>")); 237dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 238dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, !at_fault, " #%02d lr %08x %s\n", 1, r.ARM_lr, 239dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project map_to_name(map, r.ARM_lr, "<unknown>")); 240dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 241dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 242dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_registers(int tfd, int pid, bool at_fault) 243dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 244dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct pt_regs r; 245dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bool only_in_tombstone = !at_fault; 246dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 247dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ptrace(PTRACE_GETREGS, pid, 0, &r)) { 248dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, only_in_tombstone, 249dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "cannot get registers: %s\n", strerror(errno)); 250dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return; 251dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 252dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 253dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, only_in_tombstone, " r0 %08x r1 %08x r2 %08x r3 %08x\n", 254dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project r.ARM_r0, r.ARM_r1, r.ARM_r2, r.ARM_r3); 255dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, only_in_tombstone, " r4 %08x r5 %08x r6 %08x r7 %08x\n", 256dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project r.ARM_r4, r.ARM_r5, r.ARM_r6, r.ARM_r7); 257dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, only_in_tombstone, " r8 %08x r9 %08x 10 %08x fp %08x\n", 258dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project r.ARM_r8, r.ARM_r9, r.ARM_r10, r.ARM_fp); 259dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, only_in_tombstone, 260dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project " ip %08x sp %08x lr %08x pc %08x cpsr %08x\n", 261dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project r.ARM_ip, r.ARM_sp, r.ARM_lr, r.ARM_pc, r.ARM_cpsr); 262dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 263dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 264dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectconst char *get_signame(int sig) 265dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 266dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project switch(sig) { 267dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGILL: return "SIGILL"; 268dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGABRT: return "SIGABRT"; 269dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGBUS: return "SIGBUS"; 270dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGFPE: return "SIGFPE"; 271dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSEGV: return "SIGSEGV"; 272dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSTKFLT: return "SIGSTKFLT"; 273dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project default: return "?"; 274dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 275dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 276dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 277dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_fault_addr(int tfd, int pid, int sig) 278dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 279dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project siginfo_t si; 280dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 281dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&si, 0, sizeof(si)); 282dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ptrace(PTRACE_GETSIGINFO, pid, 0, &si)){ 283dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, "cannot get siginfo: %s\n", strerror(errno)); 284dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 285dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, "signal %d (%s), fault addr %08x\n", 286dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sig, get_signame(sig), si.si_addr); 287dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 288dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 289dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 290dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_crash_banner(int tfd, unsigned pid, unsigned tid, int sig) 291dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 292dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char data[1024]; 293dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char *x = 0; 294dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FILE *fp; 295dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 296dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(data, "/proc/%d/cmdline", pid); 297dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fp = fopen(data, "r"); 298dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fp) { 299dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project x = fgets(data, 1024, fp); 300dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 301dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 302dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 303dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, 304dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n"); 305dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_build_info(tfd); 306dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, "pid: %d, tid: %d >>> %s <<<\n", 307dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pid, tid, x ? x : "UNKNOWN"); 308dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 309dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(sig) dump_fault_addr(tfd, tid, sig); 310dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 311dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 312dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void parse_exidx_info(mapinfo *milist, pid_t pid) 313dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 314dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *mi; 315dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (mi = milist; mi != NULL; mi = mi->next) { 316dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project Elf32_Ehdr ehdr; 317dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 318dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&ehdr, 0, sizeof(Elf32_Ehdr)); 319dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Read in sizeof(Elf32_Ehdr) worth of data from the beginning of 320dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * mapped section. 321dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 322dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project get_remote_struct(pid, (void *) (mi->start), &ehdr, 323dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sizeof(Elf32_Ehdr)); 324dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Check if it has the matching magic words */ 325dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (IS_ELF(ehdr)) { 326dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project Elf32_Phdr phdr; 327dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project Elf32_Phdr *ptr; 328dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int i; 329dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 330dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ptr = (Elf32_Phdr *) (mi->start + ehdr.e_phoff); 331dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (i = 0; i < ehdr.e_phnum; i++) { 332dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Parse the program header */ 333dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project get_remote_struct(pid, (void *) ptr+i, &phdr, 334dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sizeof(Elf32_Phdr)); 335dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Found a EXIDX segment? */ 336dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (phdr.p_type == PT_ARM_EXIDX) { 337dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->exidx_start = mi->start + phdr.p_offset; 338dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->exidx_end = mi->exidx_start + phdr.p_filesz; 339dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 340dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 341dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 342dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 343dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 344dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 345dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 346dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_crash_report(int tfd, unsigned pid, unsigned tid, bool at_fault) 347dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 348dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char data[1024]; 349dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FILE *fp; 350dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *milist = 0; 351dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned int sp_list[STACK_CONTENT_DEPTH]; 352dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int stack_depth; 353dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int frame0_pc_sane = 1; 354dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 355dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!at_fault) { 356dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, true, 357dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---\n"); 358dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, true, "pid: %d, tid: %d\n", pid, tid); 359dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 360dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 361dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_registers(tfd, tid, at_fault); 362dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 363dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Clear stack pointer records */ 364dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(sp_list, 0, sizeof(sp_list)); 365dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 366dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(data, "/proc/%d/maps", pid); 367dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fp = fopen(data, "r"); 368dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fp) { 369dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(fgets(data, 1024, fp)) { 370dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *mi = parse_maps_line(data); 371dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(mi) { 372dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->next = milist; 373dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project milist = mi; 374dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 375dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 376dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 377dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 378dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 379dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project parse_exidx_info(milist, tid); 380dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 381dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* If stack unwinder fails, use the default solution to dump the stack 382dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * content. 383dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 384dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project stack_depth = unwind_backtrace_with_ptrace(tfd, tid, milist, sp_list, 385dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project &frame0_pc_sane, at_fault); 386dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 387dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* The stack unwinder should at least unwind two levels of stack. If less 388dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * level is seen we make sure at lease pc and lr are dumped. 389dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 390dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (stack_depth < 2) { 391dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_pc_and_lr(tfd, tid, milist, stack_depth, at_fault); 392dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 393dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 394dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_stack_and_code(tfd, tid, milist, stack_depth, sp_list, frame0_pc_sane, 395dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project at_fault); 396dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 397dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(milist) { 398dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *next = milist->next; 399dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project free(milist); 400dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project milist = next; 401dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 402dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 403dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 404dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* FIXME: unused: use it or lose it*/ 405dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#if 0 406dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic 407dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid start_gdbserver_vs(int pid, int port) 408dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 409dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pid_t p; 410dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char *args[5]; 411dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char commspec[16]; 412dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char pidspec[16]; 413dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 414dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project p = fork(); 415dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(p < 0) { 416dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("could not fork()\n"); 417dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return; 418dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 419dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 420dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(p == 0) { 421dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(commspec, ":%d", port); 422dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(pidspec, "%d", pid); 423dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project args[0] = "/system/bin/gdbserver"; 424dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project args[1] = commspec; 425dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project args[2] = "--attach"; 426dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project args[3] = pidspec; 427dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project args[4] = 0; 428dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project exit(execv(args[0], args)); 429dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 430dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("gdbserver pid=%d port=%d targetpid=%d\n", 431dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project p, port, pid); 432dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 433dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sleep(5); 434dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 435dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 436dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 437dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 438dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define MAX_TOMBSTONES 10 439dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 440dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define typecheck(x,y) { \ 441dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project typeof(x) __dummy1; \ 442dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project typeof(y) __dummy2; \ 443dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project (void)(&__dummy1 == &__dummy2); } 444dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 445dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define TOMBSTONE_DIR "/data/tombstones" 446dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 447dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 448dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * find_and_open_tombstone - find an available tombstone slot, if any, of the 449dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * form tombstone_XX where XX is 00 to MAX_TOMBSTONES-1, inclusive. If no 450dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * file is available, we reuse the least-recently-modified file. 451dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 452dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int find_and_open_tombstone(void) 453dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 454dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned long mtime = ULONG_MAX; 455dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct stat sb; 456dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char path[128]; 457dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd, i, oldest = 0; 458dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 459dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 460dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * XXX: Our stat.st_mtime isn't time_t. If it changes, as it probably ought 461dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * to, our logic breaks. This check will generate a warning if that happens. 462dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 463dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project typecheck(mtime, sb.st_mtime); 464dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 465dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 466dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * In a single wolf-like pass, find an available slot and, in case none 467dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * exist, find and record the least-recently-modified file. 468dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 469dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (i = 0; i < MAX_TOMBSTONES; i++) { 470dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(path, sizeof(path), TOMBSTONE_DIR"/tombstone_%02d", i); 471dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 472dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!stat(path, &sb)) { 473dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (sb.st_mtime < mtime) { 474dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project oldest = i; 475dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mtime = sb.st_mtime; 476dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 477dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 478dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 479dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (errno != ENOENT) 480dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 481dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 482dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = open(path, O_CREAT | O_EXCL | O_WRONLY, 0600); 483dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) 484dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; /* raced ? */ 485dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 486dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fchown(fd, AID_SYSTEM, AID_SYSTEM); 487dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return fd; 488dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 489dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 490dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* we didn't find an available file, so we clobber the oldest one */ 491dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(path, sizeof(path), TOMBSTONE_DIR"/tombstone_%02d", oldest); 492dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600); 493dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fchown(fd, AID_SYSTEM, AID_SYSTEM); 494dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 495dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return fd; 496dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 497dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 498dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* Return true if some thread is not detached cleanly */ 499dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic bool dump_sibling_thread_report(int tfd, unsigned pid, unsigned tid) 500dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 501dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char task_path[1024]; 502dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 503dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(task_path, "/proc/%d/task", pid); 504dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project DIR *d; 505dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct dirent *de; 506dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int need_cleanup = 0; 507dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 508dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project d = opendir(task_path); 509dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Bail early if cannot open the task directory */ 510dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (d == NULL) { 511dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("Cannot open /proc/%d/task\n", pid); 512dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return false; 513dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 514dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while ((de = readdir(d)) != NULL) { 515dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned new_tid; 516dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Ignore "." and ".." */ 517dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) 518dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 519dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project new_tid = atoi(de->d_name); 520dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* The main thread at fault has been handled individually */ 521dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (new_tid == tid) 522dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 523dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 524dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Skip this thread if cannot ptrace it */ 525dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ptrace(PTRACE_ATTACH, new_tid, 0, 0) < 0) 526dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 527dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 528dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_crash_report(tfd, pid, new_tid, false); 529dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project need_cleanup |= ptrace(PTRACE_DETACH, new_tid, 0, 0); 530dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 531dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project closedir(d); 532dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return need_cleanup != 0; 533dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 534dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 535dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* Return true if some thread is not detached cleanly */ 536dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic bool engrave_tombstone(unsigned pid, unsigned tid, int debug_uid, 537dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int signal) 538dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 539dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 540dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bool need_cleanup = false; 541dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 542dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mkdir(TOMBSTONE_DIR, 0755); 543dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project chown(TOMBSTONE_DIR, AID_SYSTEM, AID_SYSTEM); 544dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 545dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = find_and_open_tombstone(); 546dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) 547dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return need_cleanup; 548dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 549dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_crash_banner(fd, pid, tid, signal); 550dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_crash_report(fd, pid, tid, true); 551dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 552dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * If the user has requested to attach gdb, don't collect the per-thread 553dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * information as it increases the chance to lose track of the process. 554dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 555dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((signed)pid > debug_uid) { 556dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project need_cleanup = dump_sibling_thread_report(fd, pid, tid); 557dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 558dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 559dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 560dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return need_cleanup; 561dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 562dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 563dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int 564dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectwrite_string(const char* file, const char* string) 565dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 566dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int len; 567dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 568dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ssize_t amt; 569dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = open(file, O_RDWR); 570dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len = strlen(string); 571dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) 572dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -errno; 573dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project amt = write(fd, string, len); 574dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 575dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return amt >= 0 ? 0 : -errno; 576dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 577dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 578dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic 579dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid init_debug_led(void) 580dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 581dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // trout leds 582dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/red/brightness", "0"); 583dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/green/brightness", "0"); 584dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/blue/brightness", "0"); 585dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/red/device/blink", "0"); 586dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // sardine leds 587dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/left/cadence", "0,0"); 588dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 589dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 590dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic 591dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid enable_debug_led(void) 592dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 593dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // trout leds 594dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/red/brightness", "255"); 595dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // sardine leds 596dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/left/cadence", "1,0"); 597dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 598dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 599dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic 600dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid disable_debug_led(void) 601dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 602dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // trout leds 603dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/red/brightness", "0"); 604dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // sardine leds 605dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/left/cadence", "0,0"); 606dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 607dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 608dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern int init_getevent(); 609dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern void uninit_getevent(); 610dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern int get_event(struct input_event* event, int timeout); 611dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 612dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void wait_for_user_action(unsigned tid, struct ucred* cr) 613dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 614dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project (void)tid; 615dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* First log a helpful message */ 616dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG( "********************************************************\n" 617dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "* process %d crashed. debuggerd waiting for gdbserver \n" 618dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "* \n" 619dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "* adb shell gdbserver :port --attach %d & \n" 620dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "* \n" 621dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "* and press the HOME key. \n" 622dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "********************************************************\n", 623dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project cr->pid, cr->pid); 624dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 625dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* wait for HOME key */ 626dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (init_getevent() == 0) { 627dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int ms = 1200 / 10; 628dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int dit = 1; 629dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int dah = 3*dit; 630dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int _ = -dit; 631dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int ___ = 3*_; 632dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int _______ = 7*_; 633dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const signed char codes[] = { 634dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dit,_,dit,_,dit,___,dah,_,dah,_,dah,___,dit,_,dit,_,dit,_______ 635dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project }; 636dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project size_t s = 0; 637dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct input_event e; 638dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int home = 0; 639dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_debug_led(); 640dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project enable_debug_led(); 641dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project do { 642dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int timeout = abs((int)(codes[s])) * ms; 643dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int res = get_event(&e, timeout); 644dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (res == 0) { 645dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (e.type==EV_KEY && e.code==KEY_HOME && e.value==0) 646dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project home = 1; 647dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else if (res == 1) { 648dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (++s >= sizeof(codes)/sizeof(*codes)) 649dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project s = 0; 650dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (codes[s] > 0) { 651dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project enable_debug_led(); 652dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 653dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project disable_debug_led(); 654dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 655dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 656dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } while (!home); 657dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project uninit_getevent(); 658dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 659dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 660dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* don't forget to turn debug led off */ 661dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project disable_debug_led(); 662dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 663dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* close filedescriptor */ 664dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("debuggerd resuming process %d", cr->pid); 665dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 666dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 667dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void handle_crashing_process(int fd) 668dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 669dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char buf[64]; 670dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct stat s; 671dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned tid; 672dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ucred cr; 673dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int n, len, status; 674dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int tid_attach_status = -1; 675dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned retry = 30; 676dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bool need_cleanup = false; 677dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 678dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char value[PROPERTY_VALUE_MAX]; 679dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_get("debug.db.uid", value, "-1"); 680dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int debug_uid = atoi(value); 681dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 682dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("handle_crashing_process(%d)\n", fd); 683dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 684dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len = sizeof(cr); 685dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &len); 686dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(n != 0) { 687dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("cannot get credentials\n"); 688dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 689dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 690dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 691dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("reading tid\n"); 692dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(fd, F_SETFL, O_NONBLOCK); 693dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while((n = read(fd, &tid, sizeof(unsigned))) != sizeof(unsigned)) { 694dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(errno == EINTR) continue; 695dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(errno == EWOULDBLOCK) { 696dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(retry-- > 0) { 697dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project usleep(100 * 1000); 698dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 699dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 700dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("timed out reading tid\n"); 701dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 702dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 703dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("read failure? %s\n", strerror(errno)); 704dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 705dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 706dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 707dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(buf,"/proc/%d/task/%d", cr.pid, tid); 708dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(stat(buf, &s)) { 709dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("tid %d does not exist in pid %d. ignorning debug request\n", 710dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tid, cr.pid); 711dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 712dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return; 713dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 714dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 715dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("BOOM: pid=%d uid=%d gid=%d tid=%d\n", cr.pid, cr.uid, cr.gid, tid); 716dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 717dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tid_attach_status = ptrace(PTRACE_ATTACH, tid, 0, 0); 718dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(tid_attach_status < 0) { 719dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("ptrace attach failed: %s\n", strerror(errno)); 720dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 721dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 722dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 723dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 724dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = -1; 725dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 726dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for(;;) { 727dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = waitpid(tid, &status, __WALL); 728dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 729dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(n < 0) { 730dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(errno == EAGAIN) continue; 731dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("waitpid failed: %s\n", strerror(errno)); 732dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 733dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 734dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 735dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("waitpid: n=%d status=%08x\n", n, status); 736dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 737dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(WIFSTOPPED(status)){ 738dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = WSTOPSIG(status); 739dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project switch(n) { 740dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSTOP: 741dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("stopped -- continuing\n"); 742dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = ptrace(PTRACE_CONT, tid, 0, 0); 743dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(n) { 744dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("ptrace failed: %s\n", strerror(errno)); 745dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 746dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 747dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 748dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 749dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGILL: 750dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGABRT: 751dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGBUS: 752dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGFPE: 753dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSEGV: 754dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSTKFLT: { 755dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("stopped -- fatal signal\n"); 756dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project need_cleanup = engrave_tombstone(cr.pid, tid, debug_uid, n); 757dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kill(tid, SIGSTOP); 758dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 759dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 760dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 761dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project default: 762dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("stopped -- unexpected signal\n"); 763dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 764dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 765dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 766dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("unexpected waitpid response\n"); 767dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 768dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 769dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 770dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 771dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectdone: 772dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("detaching\n"); 773dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 774dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* stop the process so we can debug */ 775dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kill(cr.pid, SIGSTOP); 776dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 777dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 778dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * If a thread has been attached by ptrace, make sure it is detached 779dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * successfully otherwise we will get a zombie. 780dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 781dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (tid_attach_status == 0) { 782dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int detach_status; 783dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* detach so we can attach gdbserver */ 784dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project detach_status = ptrace(PTRACE_DETACH, tid, 0, 0); 785dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project need_cleanup |= (detach_status != 0); 786dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 787dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 788dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 789dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * if debug.db.uid is set, its value indicates if we should wait 790dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * for user action for the crashing process. 791dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * in this case, we log a message and turn the debug LED on 792dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * waiting for a gdb connection (for instance) 793dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 794dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 795dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((signed)cr.uid <= debug_uid) { 796dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project wait_for_user_action(tid, &cr); 797dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 798dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 799dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* resume stopped process (so it can crash in peace) */ 800dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kill(cr.pid, SIGCONT); 801dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 802dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (need_cleanup) { 803dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("debuggerd committing suicide to free the zombie!\n"); 804dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kill(getpid(), SIGKILL); 805dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 806dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 807dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fd != -1) close(fd); 808dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 809dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 810dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint main(int argc, char **argv) 811dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 812dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int s; 813dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct sigaction act; 814dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 815dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project process_name_ptr = argv; 816dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 817dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project logsocket = socket_local_client("logd", 818dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_DGRAM); 819dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(logsocket < 0) { 820dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project logsocket = -1; 821dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 822dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(logsocket, F_SETFD, FD_CLOEXEC); 823dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 824dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 825dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project act.sa_handler = SIG_DFL; 826dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sigemptyset(&act.sa_mask); 827dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sigaddset(&act.sa_mask,SIGCHLD); 828dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project act.sa_flags = SA_NOCLDWAIT; 829dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sigaction(SIGCHLD, &act, 0); 830dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 831dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project s = socket_local_server("android:debuggerd", 832dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); 833dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(s < 0) return -1; 834dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(s, F_SETFD, FD_CLOEXEC); 835dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 836dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("debuggerd: " __DATE__ " " __TIME__ "\n"); 837dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 838dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for(;;) { 839dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct sockaddr addr; 840dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project socklen_t alen; 841dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 842dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 843dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project alen = sizeof(addr); 844dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = accept(s, &addr, &alen); 845dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fd < 0) continue; 846dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 847dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(fd, F_SETFD, FD_CLOEXEC); 848dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 849dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project handle_crashing_process(fd); 850dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 851dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 852dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 853