debuggerd.c revision 09e713789e31f640a80af1cddb2fc40cbeb02ad5
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** 509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng** Licensed under the Apache License, Version 2.0 (the "License"); 609e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng** you may not use this file except in compliance with the License. 709e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng** You may obtain a copy of the License at 8dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** 909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng** http://www.apache.org/licenses/LICENSE-2.0 10dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project** 1109e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng** Unless required by applicable law or agreed to in writing, software 1209e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng** distributed under the License is distributed on an "AS IS" BASIS, 1309e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1409e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng** 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 int logsocket = -1; 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 53dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define ANDROID_LOG_INFO 4 54dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 55dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* Log information onto the tombstone */ 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid _LOG(int tfd, bool in_tombstone_only, const char *fmt, ...) 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char buf[128]; 5909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project va_list ap; 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project va_start(ap, fmt); 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (tfd >= 0) { 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int len; 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project vsnprintf(buf, sizeof(buf), fmt, ap); 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len = strlen(buf); 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(tfd >= 0) write(tfd, buf, len); 68dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!in_tombstone_only) 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project __android_log_vprint(ANDROID_LOG_INFO, "DEBUG", fmt, ap); 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define LOG(fmt...) _LOG(-1, 0, fmt) 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#if 0 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define XLOG(fmt...) _LOG(-1, 0, fmt) 77dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#else 78dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define XLOG(fmt...) do {} while(0) 79dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 80dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 81dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project// 6f000000-6f01e000 rwxp 00000000 00:0c 16389419 /system/lib/libcomposer.so 82dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project// 012345678901234567890123456789012345678901234567890123456789 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project// 0 1 2 3 4 5 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectmapinfo *parse_maps_line(char *line) 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *mi; 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int len = strlen(line); 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(len < 1) return 0; 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project line[--len] = 0; 9209e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 93dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(len < 50) return 0; 94dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(line[20] != 'x') return 0; 95dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 96dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi = malloc(sizeof(mapinfo) + (len - 47)); 97dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(mi == 0) return 0; 9809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 99dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->start = strtoul(line, 0, 16); 100dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->end = strtoul(line + 9, 0, 16); 10109e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng /* To be filled in parse_exidx_info if the mapped section starts with 102dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * elf_header 103dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 104dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->exidx_start = mi->exidx_end = 0; 105dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->next = 0; 106dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strcpy(mi->name, line + 49); 107dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 108dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return mi; 109dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 110dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 111dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_build_info(int tfd) 112dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 113dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char fingerprint[PROPERTY_VALUE_MAX]; 114dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 115dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_get("ro.build.fingerprint", fingerprint, "unknown"); 116dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 117dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, "Build fingerprint: '%s'\n", fingerprint); 118dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 119dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 120dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 12109e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Chengvoid dump_stack_and_code(int tfd, int pid, mapinfo *map, 122dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int unwind_depth, unsigned int sp_list[], 123dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int frame0_pc_sane, bool at_fault) 124dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 125dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned int sp, pc, p, end, data; 126dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct pt_regs r; 127dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int sp_depth; 128dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bool only_in_tombstone = !at_fault; 12909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng char code_buffer[80]; 130dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 131dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ptrace(PTRACE_GETREGS, pid, 0, &r)) return; 132dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sp = r.ARM_sp; 133dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pc = r.ARM_pc; 134dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 135dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Died because calling the weeds - dump 136dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * the code around the PC in the next frame instead. 137dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 138dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (frame0_pc_sane == 0) { 139dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pc = r.ARM_lr; 140dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 141dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 14209e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng _LOG(tfd, only_in_tombstone, 14309e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng "\ncode around %s:\n", frame0_pc_sane ? "pc" : "lr"); 144dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 145dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project end = p = pc & ~3; 146dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project p -= 16; 14709e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng end += 16; 148dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 14909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng /* Dump the code around PC as: 15009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng * addr contents 151dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 00008d34 fffffcd0 4c0eb530 b0934a0e 1c05447c 152dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 00008d44 f7ff18a0 490ced94 68035860 d0012b00 153dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 154dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while (p <= end) { 155dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int i; 156dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 15709e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng sprintf(code_buffer, "%08x ", p); 158dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (i = 0; i < 4; i++) { 159dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data = ptrace(PTRACE_PEEKTEXT, pid, (void*)p, NULL); 16009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng sprintf(code_buffer + strlen(code_buffer), "%08x ", data); 161dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project p += 4; 162dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 16309e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng _LOG(tfd, only_in_tombstone, "%s\n", code_buffer); 16409e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng } 16509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 16609e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng if (frame0_pc_sane) { 16709e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng _LOG(tfd, only_in_tombstone, "\ncode around lr:\n"); 16809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 16909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng end = p = r.ARM_lr & ~3; 17009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng p -= 16; 17109e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng end += 16; 17209e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 17309e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng /* Dump the code around LR as: 17409e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng * addr contents 17509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng * 00008d34 fffffcd0 4c0eb530 b0934a0e 1c05447c 17609e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng * 00008d44 f7ff18a0 490ced94 68035860 d0012b00 17709e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng */ 17809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng while (p <= end) { 17909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng int i; 18009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 18109e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng sprintf(code_buffer, "%08x ", p); 18209e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng for (i = 0; i < 4; i++) { 18309e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng data = ptrace(PTRACE_PEEKTEXT, pid, (void*)p, NULL); 18409e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng sprintf(code_buffer + strlen(code_buffer), "%08x ", data); 18509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng p += 4; 18609e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng } 18709e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng _LOG(tfd, only_in_tombstone, "%s\n", code_buffer); 18809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng } 189dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 190dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 191dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project p = sp - 64; 192dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project p &= ~3; 193dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (unwind_depth != 0) { 194dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (unwind_depth < STACK_CONTENT_DEPTH) { 195dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project end = sp_list[unwind_depth-1]; 196dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 197dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else { 198dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project end = sp_list[STACK_CONTENT_DEPTH-1]; 199dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 200dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 201dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else { 202dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project end = sp | 0x000000ff; 203dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project end += 0xff; 204dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 205dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 20609e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng _LOG(tfd, only_in_tombstone, "\nstack:\n"); 207dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 208dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* If the crash is due to PC == 0, there will be two frames that 209dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * have identical SP value. 210dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 211dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (sp_list[0] == sp_list[1]) { 212dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sp_depth = 1; 213dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 214dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else { 215dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sp_depth = 0; 216dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 217dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 218dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while (p <= end) { 21909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng char *prompt; 220dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char level[16]; 221dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data = ptrace(PTRACE_PEEKTEXT, pid, (void*)p, NULL); 222dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (p == sp_list[sp_depth]) { 223dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(level, "#%02d", sp_depth++); 224dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prompt = level; 225dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 226dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else { 227dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prompt = " "; 228dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 22909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 230dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Print the stack content in the log for the first 3 frames. For the 231dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * rest only print them in the tombstone file. 232dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 23309e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng _LOG(tfd, (sp_depth > 2) || only_in_tombstone, 23409e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng "%s %08x %08x %s\n", prompt, p, data, 235dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project map_to_name(map, data, "")); 236dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project p += 4; 237dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 238dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* print another 64-byte of stack data after the last frame */ 239dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 240dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project end = p+64; 241dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while (p <= end) { 242dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data = ptrace(PTRACE_PEEKTEXT, pid, (void*)p, NULL); 24309e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng _LOG(tfd, (sp_depth > 2) || only_in_tombstone, 24409e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng " %08x %08x %s\n", p, data, 245dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project map_to_name(map, data, "")); 246dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project p += 4; 247dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 248dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 249dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 25009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Chengvoid dump_pc_and_lr(int tfd, int pid, mapinfo *map, int unwound_level, 251dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bool at_fault) 252dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 253dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct pt_regs r; 254dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 255dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ptrace(PTRACE_GETREGS, pid, 0, &r)) { 256dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, !at_fault, "tid %d not responding!\n", pid); 257dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return; 258dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 259dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 260dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (unwound_level == 0) { 261dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, !at_fault, " #%02d pc %08x %s\n", 0, r.ARM_pc, 262dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project map_to_name(map, r.ARM_pc, "<unknown>")); 263dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 264dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, !at_fault, " #%02d lr %08x %s\n", 1, r.ARM_lr, 265dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project map_to_name(map, r.ARM_lr, "<unknown>")); 266dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 267dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 26809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Chengvoid dump_registers(int tfd, int pid, bool at_fault) 269dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 270dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct pt_regs r; 271dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bool only_in_tombstone = !at_fault; 272dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 273dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ptrace(PTRACE_GETREGS, pid, 0, &r)) { 27409e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng _LOG(tfd, only_in_tombstone, 275dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "cannot get registers: %s\n", strerror(errno)); 276dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return; 277dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 27809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 279dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, only_in_tombstone, " r0 %08x r1 %08x r2 %08x r3 %08x\n", 280dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project r.ARM_r0, r.ARM_r1, r.ARM_r2, r.ARM_r3); 281dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, only_in_tombstone, " r4 %08x r5 %08x r6 %08x r7 %08x\n", 282dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project r.ARM_r4, r.ARM_r5, r.ARM_r6, r.ARM_r7); 283dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, only_in_tombstone, " r8 %08x r9 %08x 10 %08x fp %08x\n", 284dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project r.ARM_r8, r.ARM_r9, r.ARM_r10, r.ARM_fp); 28509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng _LOG(tfd, only_in_tombstone, 286dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project " ip %08x sp %08x lr %08x pc %08x cpsr %08x\n", 28709e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng r.ARM_ip, r.ARM_sp, r.ARM_lr, r.ARM_pc, r.ARM_cpsr); 288dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 289dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 290dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectconst char *get_signame(int sig) 291dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 292dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project switch(sig) { 293dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGILL: return "SIGILL"; 294dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGABRT: return "SIGABRT"; 295dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGBUS: return "SIGBUS"; 296dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGFPE: return "SIGFPE"; 297dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSEGV: return "SIGSEGV"; 298dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSTKFLT: return "SIGSTKFLT"; 299dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project default: return "?"; 300dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 301dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 302dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 303dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_fault_addr(int tfd, int pid, int sig) 304dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 305dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project siginfo_t si; 30609e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 307dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&si, 0, sizeof(si)); 308dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ptrace(PTRACE_GETSIGINFO, pid, 0, &si)){ 309dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, "cannot get siginfo: %s\n", strerror(errno)); 310dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 311dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, "signal %d (%s), fault addr %08x\n", 312dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sig, get_signame(sig), si.si_addr); 313dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 314dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 315dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 316dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_crash_banner(int tfd, unsigned pid, unsigned tid, int sig) 317dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 318dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char data[1024]; 319dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char *x = 0; 320dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FILE *fp; 32109e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 322dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(data, "/proc/%d/cmdline", pid); 323dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fp = fopen(data, "r"); 324dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fp) { 325dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project x = fgets(data, 1024, fp); 326dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 327dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 32809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 329dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, 330dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n"); 331dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_build_info(tfd); 332dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, "pid: %d, tid: %d >>> %s <<<\n", 333dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pid, tid, x ? x : "UNKNOWN"); 33409e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 335dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(sig) dump_fault_addr(tfd, tid, sig); 336dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 337dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 338dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void parse_exidx_info(mapinfo *milist, pid_t pid) 339dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 340dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *mi; 341dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (mi = milist; mi != NULL; mi = mi->next) { 342dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project Elf32_Ehdr ehdr; 343dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 344dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&ehdr, 0, sizeof(Elf32_Ehdr)); 34509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng /* Read in sizeof(Elf32_Ehdr) worth of data from the beginning of 346dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * mapped section. 347dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 34809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng get_remote_struct(pid, (void *) (mi->start), &ehdr, 349dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sizeof(Elf32_Ehdr)); 350dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Check if it has the matching magic words */ 351dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (IS_ELF(ehdr)) { 352dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project Elf32_Phdr phdr; 353dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project Elf32_Phdr *ptr; 354dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int i; 355dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 356dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ptr = (Elf32_Phdr *) (mi->start + ehdr.e_phoff); 357dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (i = 0; i < ehdr.e_phnum; i++) { 358dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Parse the program header */ 35909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng get_remote_struct(pid, (char *) ptr+i, &phdr, 360dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sizeof(Elf32_Phdr)); 361dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Found a EXIDX segment? */ 362dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (phdr.p_type == PT_ARM_EXIDX) { 363dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->exidx_start = mi->start + phdr.p_offset; 364dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->exidx_end = mi->exidx_start + phdr.p_filesz; 365dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 366dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 367dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 368dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 369dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 370dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 371dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 372dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_crash_report(int tfd, unsigned pid, unsigned tid, bool at_fault) 373dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 374dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char data[1024]; 375dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FILE *fp; 376dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *milist = 0; 377dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned int sp_list[STACK_CONTENT_DEPTH]; 378dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int stack_depth; 379dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int frame0_pc_sane = 1; 38009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 381dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!at_fault) { 382dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, true, 383dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---\n"); 384dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, true, "pid: %d, tid: %d\n", pid, tid); 385dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 386dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 387dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_registers(tfd, tid, at_fault); 38809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 389dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Clear stack pointer records */ 390dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(sp_list, 0, sizeof(sp_list)); 391dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 392dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(data, "/proc/%d/maps", pid); 393dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fp = fopen(data, "r"); 394dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fp) { 395dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(fgets(data, 1024, fp)) { 396dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *mi = parse_maps_line(data); 397dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(mi) { 398dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->next = milist; 399dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project milist = mi; 400dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 401dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 402dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 403dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 404dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 405dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project parse_exidx_info(milist, tid); 406dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 407dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* If stack unwinder fails, use the default solution to dump the stack 408dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * content. 409dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 410dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project stack_depth = unwind_backtrace_with_ptrace(tfd, tid, milist, sp_list, 411dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project &frame0_pc_sane, at_fault); 412dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 413dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* The stack unwinder should at least unwind two levels of stack. If less 414dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * level is seen we make sure at lease pc and lr are dumped. 415dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 416dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (stack_depth < 2) { 417dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_pc_and_lr(tfd, tid, milist, stack_depth, at_fault); 418dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 419dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 420dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_stack_and_code(tfd, tid, milist, stack_depth, sp_list, frame0_pc_sane, 421dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project at_fault); 422dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 423dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(milist) { 424dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *next = milist->next; 425dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project free(milist); 426dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project milist = next; 427dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 428dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 429dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 430dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define MAX_TOMBSTONES 10 431dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 432dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define typecheck(x,y) { \ 433dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project typeof(x) __dummy1; \ 434dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project typeof(y) __dummy2; \ 435dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project (void)(&__dummy1 == &__dummy2); } 436dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 437dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define TOMBSTONE_DIR "/data/tombstones" 438dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 439dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 440dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * find_and_open_tombstone - find an available tombstone slot, if any, of the 441dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * form tombstone_XX where XX is 00 to MAX_TOMBSTONES-1, inclusive. If no 442dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * file is available, we reuse the least-recently-modified file. 443dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 444dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int find_and_open_tombstone(void) 445dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 446dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned long mtime = ULONG_MAX; 447dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct stat sb; 448dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char path[128]; 449dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd, i, oldest = 0; 450dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 451dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 452dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * XXX: Our stat.st_mtime isn't time_t. If it changes, as it probably ought 453dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * to, our logic breaks. This check will generate a warning if that happens. 454dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 455dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project typecheck(mtime, sb.st_mtime); 456dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 457dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 458dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * In a single wolf-like pass, find an available slot and, in case none 459dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * exist, find and record the least-recently-modified file. 460dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 461dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (i = 0; i < MAX_TOMBSTONES; i++) { 462dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(path, sizeof(path), TOMBSTONE_DIR"/tombstone_%02d", i); 463dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 464dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!stat(path, &sb)) { 465dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (sb.st_mtime < mtime) { 466dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project oldest = i; 467dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mtime = sb.st_mtime; 468dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 469dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 470dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 471dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (errno != ENOENT) 472dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 473dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 474dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = open(path, O_CREAT | O_EXCL | O_WRONLY, 0600); 475dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) 476dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; /* raced ? */ 477dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 478dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fchown(fd, AID_SYSTEM, AID_SYSTEM); 479dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return fd; 480dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 481dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 482dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* we didn't find an available file, so we clobber the oldest one */ 483dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(path, sizeof(path), TOMBSTONE_DIR"/tombstone_%02d", oldest); 484dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600); 485dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fchown(fd, AID_SYSTEM, AID_SYSTEM); 486dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 487dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return fd; 488dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 489dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 490dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* Return true if some thread is not detached cleanly */ 491dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic bool dump_sibling_thread_report(int tfd, unsigned pid, unsigned tid) 492dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 493dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char task_path[1024]; 494dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 495dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(task_path, "/proc/%d/task", pid); 496dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project DIR *d; 497dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct dirent *de; 498dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int need_cleanup = 0; 499dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 500dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project d = opendir(task_path); 501dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Bail early if cannot open the task directory */ 502dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (d == NULL) { 503dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("Cannot open /proc/%d/task\n", pid); 504dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return false; 505dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 506dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while ((de = readdir(d)) != NULL) { 507dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned new_tid; 508dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Ignore "." and ".." */ 50909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) 510dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 511dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project new_tid = atoi(de->d_name); 512dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* The main thread at fault has been handled individually */ 513dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (new_tid == tid) 514dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 515dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 516dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Skip this thread if cannot ptrace it */ 517dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ptrace(PTRACE_ATTACH, new_tid, 0, 0) < 0) 518dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 519dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 520dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_crash_report(tfd, pid, new_tid, false); 521dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project need_cleanup |= ptrace(PTRACE_DETACH, new_tid, 0, 0); 522dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 523dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project closedir(d); 524dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return need_cleanup != 0; 525dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 526dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 527dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* Return true if some thread is not detached cleanly */ 52809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Chengstatic bool engrave_tombstone(unsigned pid, unsigned tid, int debug_uid, 529dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int signal) 530dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 531dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 532dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bool need_cleanup = false; 533dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 534dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mkdir(TOMBSTONE_DIR, 0755); 535dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project chown(TOMBSTONE_DIR, AID_SYSTEM, AID_SYSTEM); 536dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 537dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = find_and_open_tombstone(); 538dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) 539dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return need_cleanup; 540dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 541dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_crash_banner(fd, pid, tid, signal); 542dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_crash_report(fd, pid, tid, true); 54309e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng /* 544dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * If the user has requested to attach gdb, don't collect the per-thread 545dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * information as it increases the chance to lose track of the process. 546dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 547dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((signed)pid > debug_uid) { 548dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project need_cleanup = dump_sibling_thread_report(fd, pid, tid); 549dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 550dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 551dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 552dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return need_cleanup; 553dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 554dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 555dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int 556dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectwrite_string(const char* file, const char* string) 557dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 558dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int len; 559dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 560dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ssize_t amt; 561dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = open(file, O_RDWR); 562dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len = strlen(string); 563dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) 564dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -errno; 565dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project amt = write(fd, string, len); 566dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 567dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return amt >= 0 ? 0 : -errno; 568dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 569dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 570dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic 571dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid init_debug_led(void) 572dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 573dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // trout leds 574dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/red/brightness", "0"); 575dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/green/brightness", "0"); 576dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/blue/brightness", "0"); 577dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/red/device/blink", "0"); 578dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // sardine leds 579dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/left/cadence", "0,0"); 580dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 581dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 582dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic 583dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid enable_debug_led(void) 584dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 585dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // trout leds 586dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/red/brightness", "255"); 587dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // sardine leds 588dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/left/cadence", "1,0"); 589dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 590dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 591dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic 592dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid disable_debug_led(void) 593dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 594dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // trout leds 595dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/red/brightness", "0"); 596dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // sardine leds 597dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/left/cadence", "0,0"); 598dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 599dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 600dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern int init_getevent(); 601dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern void uninit_getevent(); 602dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern int get_event(struct input_event* event, int timeout); 603dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 604dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void wait_for_user_action(unsigned tid, struct ucred* cr) 605dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 606dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project (void)tid; 607dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* First log a helpful message */ 608dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG( "********************************************************\n" 609dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "* process %d crashed. debuggerd waiting for gdbserver \n" 610dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "* \n" 611dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "* adb shell gdbserver :port --attach %d & \n" 612dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "* \n" 613dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "* and press the HOME key. \n" 61409e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng "********************************************************\n", 615dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project cr->pid, cr->pid); 616dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 617dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* wait for HOME key */ 618dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (init_getevent() == 0) { 619dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int ms = 1200 / 10; 620dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int dit = 1; 621dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int dah = 3*dit; 622dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int _ = -dit; 623dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int ___ = 3*_; 624dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int _______ = 7*_; 625dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const signed char codes[] = { 626dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dit,_,dit,_,dit,___,dah,_,dah,_,dah,___,dit,_,dit,_,dit,_______ 627dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project }; 628dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project size_t s = 0; 629dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct input_event e; 630dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int home = 0; 631dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_debug_led(); 632dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project enable_debug_led(); 633dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project do { 634dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int timeout = abs((int)(codes[s])) * ms; 635dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int res = get_event(&e, timeout); 636dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (res == 0) { 637dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (e.type==EV_KEY && e.code==KEY_HOME && e.value==0) 638dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project home = 1; 639dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else if (res == 1) { 640dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (++s >= sizeof(codes)/sizeof(*codes)) 641dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project s = 0; 642dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (codes[s] > 0) { 643dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project enable_debug_led(); 644dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 645dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project disable_debug_led(); 646dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 647dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 64809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng } while (!home); 649dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project uninit_getevent(); 650dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 651dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 652dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* don't forget to turn debug led off */ 653dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project disable_debug_led(); 65409e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 655dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* close filedescriptor */ 656dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("debuggerd resuming process %d", cr->pid); 657dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 658dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 659dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void handle_crashing_process(int fd) 660dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 661dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char buf[64]; 662dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct stat s; 663dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned tid; 664dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ucred cr; 66509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng int n, len, status; 666dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int tid_attach_status = -1; 667dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned retry = 30; 668dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bool need_cleanup = false; 669dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 670dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char value[PROPERTY_VALUE_MAX]; 671dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_get("debug.db.uid", value, "-1"); 672dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int debug_uid = atoi(value); 67309e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 674dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("handle_crashing_process(%d)\n", fd); 67509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 676dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len = sizeof(cr); 677dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &len); 678dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(n != 0) { 679dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("cannot get credentials\n"); 680dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 681dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 682dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 68309e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng XLOG("reading tid\n"); 684dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(fd, F_SETFL, O_NONBLOCK); 685dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while((n = read(fd, &tid, sizeof(unsigned))) != sizeof(unsigned)) { 686dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(errno == EINTR) continue; 687dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(errno == EWOULDBLOCK) { 688dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(retry-- > 0) { 689dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project usleep(100 * 1000); 690dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 691dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 692dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("timed out reading tid\n"); 693dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 694dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 695dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("read failure? %s\n", strerror(errno)); 696dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 697dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 698dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 699dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(buf,"/proc/%d/task/%d", cr.pid, tid); 700dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(stat(buf, &s)) { 701dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("tid %d does not exist in pid %d. ignorning debug request\n", 702dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tid, cr.pid); 703dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 704dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return; 705dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 70609e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 707dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("BOOM: pid=%d uid=%d gid=%d tid=%d\n", cr.pid, cr.uid, cr.gid, tid); 708dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 709dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tid_attach_status = ptrace(PTRACE_ATTACH, tid, 0, 0); 710dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(tid_attach_status < 0) { 711dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("ptrace attach failed: %s\n", strerror(errno)); 712dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 713dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 714dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 715dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 716dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = -1; 717dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 718dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for(;;) { 719dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = waitpid(tid, &status, __WALL); 72009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 721dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(n < 0) { 722dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(errno == EAGAIN) continue; 723dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("waitpid failed: %s\n", strerror(errno)); 724dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 725dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 726dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 727dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("waitpid: n=%d status=%08x\n", n, status); 728dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 729dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(WIFSTOPPED(status)){ 730dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = WSTOPSIG(status); 731dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project switch(n) { 732dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSTOP: 733dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("stopped -- continuing\n"); 734dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = ptrace(PTRACE_CONT, tid, 0, 0); 735dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(n) { 736dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("ptrace failed: %s\n", strerror(errno)); 737dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 738dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 739dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 74009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 741dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGILL: 742dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGABRT: 743dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGBUS: 744dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGFPE: 745dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSEGV: 746dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSTKFLT: { 747dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("stopped -- fatal signal\n"); 748dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project need_cleanup = engrave_tombstone(cr.pid, tid, debug_uid, n); 749dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kill(tid, SIGSTOP); 750dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 751dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 752dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 753dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project default: 754dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("stopped -- unexpected signal\n"); 755dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 756dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 757dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 758dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("unexpected waitpid response\n"); 759dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 760dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 761dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 76209e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 763dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectdone: 764dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("detaching\n"); 76509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 766dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* stop the process so we can debug */ 767dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kill(cr.pid, SIGSTOP); 768dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 76909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng /* 77009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng * If a thread has been attached by ptrace, make sure it is detached 771dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * successfully otherwise we will get a zombie. 77209e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng */ 773dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (tid_attach_status == 0) { 774dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int detach_status; 775dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* detach so we can attach gdbserver */ 776dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project detach_status = ptrace(PTRACE_DETACH, tid, 0, 0); 777dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project need_cleanup |= (detach_status != 0); 778dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 779dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 780dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 781dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * if debug.db.uid is set, its value indicates if we should wait 782dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * for user action for the crashing process. 783dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * in this case, we log a message and turn the debug LED on 784dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * waiting for a gdb connection (for instance) 785dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 786dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 787dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((signed)cr.uid <= debug_uid) { 788dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project wait_for_user_action(tid, &cr); 789dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 790dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 791dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* resume stopped process (so it can crash in peace) */ 792dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kill(cr.pid, SIGCONT); 793dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 794dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (need_cleanup) { 795dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("debuggerd committing suicide to free the zombie!\n"); 796dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kill(getpid(), SIGKILL); 797dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 798dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 799dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fd != -1) close(fd); 800dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 801dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 80209e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Chengint main() 803dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 804dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int s; 805dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct sigaction act; 80609e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 80709e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng logsocket = socket_local_client("logd", 808dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_DGRAM); 809dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(logsocket < 0) { 810dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project logsocket = -1; 811dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 812dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(logsocket, F_SETFD, FD_CLOEXEC); 813dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 814dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 815dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project act.sa_handler = SIG_DFL; 816dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sigemptyset(&act.sa_mask); 817dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sigaddset(&act.sa_mask,SIGCHLD); 818dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project act.sa_flags = SA_NOCLDWAIT; 819dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sigaction(SIGCHLD, &act, 0); 82009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 82109e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng s = socket_local_server("android:debuggerd", 822dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); 823dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(s < 0) return -1; 824dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(s, F_SETFD, FD_CLOEXEC); 825dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 826dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("debuggerd: " __DATE__ " " __TIME__ "\n"); 82709e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 828dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for(;;) { 829dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct sockaddr addr; 830dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project socklen_t alen; 831dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 83209e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 833dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project alen = sizeof(addr); 834dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = accept(s, &addr, &alen); 835dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fd < 0) continue; 83609e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 837dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(fd, F_SETFD, FD_CLOEXEC); 838dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 839dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project handle_crashing_process(fd); 840dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 841dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 842dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 843