debuggerd.c revision 655835be2a0e6d656040f4dd8f7e3e1035734ef7
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 <errno.h> 20dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <signal.h> 21dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <pthread.h> 22dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdarg.h> 23dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <fcntl.h> 24dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/types.h> 25dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <dirent.h> 26dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 27dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/ptrace.h> 28dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/wait.h> 29dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/exec_elf.h> 30dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/stat.h> 31dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 32dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/sockets.h> 33dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/logd.h> 34dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/properties.h> 35dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 36dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/input.h> 37dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 38dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <private/android_filesystem_config.h> 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 40849249064cae9c1bb23b0204b5d35b832567801eBruce Beare#include "debuggerd.h" 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include "utility.h" 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define ANDROID_LOG_INFO 4 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* Log information onto the tombstone */ 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid _LOG(int tfd, bool in_tombstone_only, const char *fmt, ...) 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 48ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hu char buf[512]; 4909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project va_list ap; 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project va_start(ap, fmt); 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 53dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (tfd >= 0) { 54dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int len; 55dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project vsnprintf(buf, sizeof(buf), fmt, ap); 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len = strlen(buf); 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(tfd >= 0) write(tfd, buf, len); 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!in_tombstone_only) 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project __android_log_vprint(ANDROID_LOG_INFO, "DEBUG", fmt, ap); 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project// 6f000000-6f01e000 rwxp 00000000 00:0c 16389419 /system/lib/libcomposer.so 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project// 012345678901234567890123456789012345678901234567890123456789 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project// 0 1 2 3 4 5 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 68dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectmapinfo *parse_maps_line(char *line) 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *mi; 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int len = strlen(line); 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(len < 1) return 0; 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project line[--len] = 0; 7509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(len < 50) return 0; 77dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(line[20] != 'x') return 0; 78dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 79dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi = malloc(sizeof(mapinfo) + (len - 47)); 80dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(mi == 0) return 0; 8109e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 82dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->start = strtoul(line, 0, 16); 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->end = strtoul(line + 9, 0, 16); 84ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hu /* To be filled in parse_elf_info if the mapped section starts with 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * elf_header 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->exidx_start = mi->exidx_end = 0; 88ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hu mi->symbols = 0; 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->next = 0; 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strcpy(mi->name, line + 49); 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 92dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return mi; 93dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 94dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 95dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_build_info(int tfd) 96dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 97dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char fingerprint[PROPERTY_VALUE_MAX]; 98dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 99dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_get("ro.build.fingerprint", fingerprint, "unknown"); 100dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 101dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, "Build fingerprint: '%s'\n", fingerprint); 102dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 103dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 104dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectconst char *get_signame(int sig) 105dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 106dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project switch(sig) { 107dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGILL: return "SIGILL"; 108dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGABRT: return "SIGABRT"; 109dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGBUS: return "SIGBUS"; 110dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGFPE: return "SIGFPE"; 111dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSEGV: return "SIGSEGV"; 112dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSTKFLT: return "SIGSTKFLT"; 113dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project default: return "?"; 114dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 115dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 116dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 11783c6b052918178033875e7ea54ca746cf7303f87Carl Shapiroconst char *get_sigcode(int signo, int code) 11883c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro{ 11983c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro switch (signo) { 12083c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case SIGILL: 12183c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro switch (code) { 12283c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case ILL_ILLOPC: return "ILL_ILLOPC"; 12383c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case ILL_ILLOPN: return "ILL_ILLOPN"; 12483c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case ILL_ILLADR: return "ILL_ILLADR"; 12583c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case ILL_ILLTRP: return "ILL_ILLTRP"; 12683c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case ILL_PRVOPC: return "ILL_PRVOPC"; 12783c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case ILL_PRVREG: return "ILL_PRVREG"; 12883c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case ILL_COPROC: return "ILL_COPROC"; 12983c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case ILL_BADSTK: return "ILL_BADSTK"; 13083c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro } 13183c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro break; 13283c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case SIGBUS: 13383c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro switch (code) { 13483c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case BUS_ADRALN: return "BUS_ADRALN"; 13583c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case BUS_ADRERR: return "BUS_ADRERR"; 13683c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case BUS_OBJERR: return "BUS_OBJERR"; 13783c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro } 13883c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro break; 13983c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case SIGFPE: 14083c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro switch (code) { 14183c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case FPE_INTDIV: return "FPE_INTDIV"; 14283c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case FPE_INTOVF: return "FPE_INTOVF"; 14383c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case FPE_FLTDIV: return "FPE_FLTDIV"; 14483c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case FPE_FLTOVF: return "FPE_FLTOVF"; 14583c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case FPE_FLTUND: return "FPE_FLTUND"; 14683c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case FPE_FLTRES: return "FPE_FLTRES"; 14783c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case FPE_FLTINV: return "FPE_FLTINV"; 14883c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case FPE_FLTSUB: return "FPE_FLTSUB"; 14983c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro } 15083c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro break; 15183c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case SIGSEGV: 15283c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro switch (code) { 15383c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case SEGV_MAPERR: return "SEGV_MAPERR"; 15483c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case SEGV_ACCERR: return "SEGV_ACCERR"; 15583c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro } 15683c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro break; 15783c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro } 15883c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro return "?"; 15983c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro} 16083c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro 161dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_fault_addr(int tfd, int pid, int sig) 162dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 163dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project siginfo_t si; 16409e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 165dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&si, 0, sizeof(si)); 166dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ptrace(PTRACE_GETSIGINFO, pid, 0, &si)){ 167dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, "cannot get siginfo: %s\n", strerror(errno)); 168dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 16983c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro _LOG(tfd, false, "signal %d (%s), code %d (%s), fault addr %08x\n", 17083c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro sig, get_signame(sig), 17183c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro si.si_code, get_sigcode(sig, si.si_code), 17283c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro si.si_addr); 173dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 174dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 175dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 176dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_crash_banner(int tfd, unsigned pid, unsigned tid, int sig) 177dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 178dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char data[1024]; 179dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char *x = 0; 180dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FILE *fp; 18109e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 182dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(data, "/proc/%d/cmdline", pid); 183dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fp = fopen(data, "r"); 184dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fp) { 185dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project x = fgets(data, 1024, fp); 186dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 187dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 18809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 189dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, 190dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n"); 191dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_build_info(tfd); 192dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, "pid: %d, tid: %d >>> %s <<<\n", 193dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pid, tid, x ? x : "UNKNOWN"); 19409e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 195dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(sig) dump_fault_addr(tfd, tid, sig); 196dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 197dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 198ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hustatic void parse_elf_info(mapinfo *milist, pid_t pid) 199dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 200dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *mi; 201dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (mi = milist; mi != NULL; mi = mi->next) { 202dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project Elf32_Ehdr ehdr; 203dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 204dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&ehdr, 0, sizeof(Elf32_Ehdr)); 20509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng /* Read in sizeof(Elf32_Ehdr) worth of data from the beginning of 206dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * mapped section. 207dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 20809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng get_remote_struct(pid, (void *) (mi->start), &ehdr, 209dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sizeof(Elf32_Ehdr)); 210dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Check if it has the matching magic words */ 211dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (IS_ELF(ehdr)) { 212dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project Elf32_Phdr phdr; 213dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project Elf32_Phdr *ptr; 214dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int i; 215dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 216dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ptr = (Elf32_Phdr *) (mi->start + ehdr.e_phoff); 217dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (i = 0; i < ehdr.e_phnum; i++) { 218dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Parse the program header */ 2196b657472331ddb2cf5286167ff2460047a321be7Mike Dodd get_remote_struct(pid, (char *) (ptr+i), &phdr, 220dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sizeof(Elf32_Phdr)); 221849249064cae9c1bb23b0204b5d35b832567801eBruce Beare#ifdef __arm__ 222dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Found a EXIDX segment? */ 223dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (phdr.p_type == PT_ARM_EXIDX) { 224dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->exidx_start = mi->start + phdr.p_offset; 225dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->exidx_end = mi->exidx_start + phdr.p_filesz; 226dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 227dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 228849249064cae9c1bb23b0204b5d35b832567801eBruce Beare#endif 229dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 230ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hu 231ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hu /* Try to load symbols from this file */ 232ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hu mi->symbols = symbol_table_create(mi->name); 233dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 234dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 235dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 236dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 237dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_crash_report(int tfd, unsigned pid, unsigned tid, bool at_fault) 238dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 239dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char data[1024]; 240dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FILE *fp; 241dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *milist = 0; 242dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned int sp_list[STACK_CONTENT_DEPTH]; 243dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int stack_depth; 244849249064cae9c1bb23b0204b5d35b832567801eBruce Beare#ifdef __arm__ 245dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int frame0_pc_sane = 1; 246849249064cae9c1bb23b0204b5d35b832567801eBruce Beare#endif 24709e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 248dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!at_fault) { 249dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, true, 250dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---\n"); 251dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, true, "pid: %d, tid: %d\n", pid, tid); 252dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 253dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 254dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_registers(tfd, tid, at_fault); 25509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 256dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Clear stack pointer records */ 257dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(sp_list, 0, sizeof(sp_list)); 258dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 259dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(data, "/proc/%d/maps", pid); 260dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fp = fopen(data, "r"); 261dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fp) { 262dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(fgets(data, 1024, fp)) { 263dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *mi = parse_maps_line(data); 264dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(mi) { 265dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->next = milist; 266dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project milist = mi; 267dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 268dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 269dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 270dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 271dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 272ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hu parse_elf_info(milist, tid); 273dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 274849249064cae9c1bb23b0204b5d35b832567801eBruce Beare#if __arm__ 275dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* If stack unwinder fails, use the default solution to dump the stack 276dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * content. 277dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 278dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project stack_depth = unwind_backtrace_with_ptrace(tfd, tid, milist, sp_list, 279dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project &frame0_pc_sane, at_fault); 280dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 281dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* The stack unwinder should at least unwind two levels of stack. If less 282dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * level is seen we make sure at lease pc and lr are dumped. 283dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 284dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (stack_depth < 2) { 285dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_pc_and_lr(tfd, tid, milist, stack_depth, at_fault); 286dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 287dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 2882854db8969cd061d83a931769dfaf4e57108d9dfBen Cheng dump_stack_and_code(tfd, tid, milist, stack_depth, sp_list, at_fault); 2896cc492308712613cd23bee9240b1757428841a2fBruce Beare#elif __i386__ 2906cc492308712613cd23bee9240b1757428841a2fBruce Beare /* If stack unwinder fails, use the default solution to dump the stack 2916cc492308712613cd23bee9240b1757428841a2fBruce Beare * content. 2926cc492308712613cd23bee9240b1757428841a2fBruce Beare */ 2936cc492308712613cd23bee9240b1757428841a2fBruce Beare stack_depth = unwind_backtrace_with_ptrace_x86(tfd, tid, milist,at_fault); 2946cc492308712613cd23bee9240b1757428841a2fBruce Beare#else 2956cc492308712613cd23bee9240b1757428841a2fBruce Beare#error "Unsupported architecture" 296849249064cae9c1bb23b0204b5d35b832567801eBruce Beare#endif 297dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 298dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(milist) { 299dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *next = milist->next; 300ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hu symbol_table_free(milist->symbols); 301dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project free(milist); 302dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project milist = next; 303dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 304dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 305dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 306dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define MAX_TOMBSTONES 10 307dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 308dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define typecheck(x,y) { \ 309dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project typeof(x) __dummy1; \ 310dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project typeof(y) __dummy2; \ 311dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project (void)(&__dummy1 == &__dummy2); } 312dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 313dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define TOMBSTONE_DIR "/data/tombstones" 314dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 315dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 316dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * find_and_open_tombstone - find an available tombstone slot, if any, of the 317dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * form tombstone_XX where XX is 00 to MAX_TOMBSTONES-1, inclusive. If no 318dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * file is available, we reuse the least-recently-modified file. 319dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 320dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int find_and_open_tombstone(void) 321dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 322dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned long mtime = ULONG_MAX; 323dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct stat sb; 324dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char path[128]; 325dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd, i, oldest = 0; 326dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 327dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 328dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * XXX: Our stat.st_mtime isn't time_t. If it changes, as it probably ought 329dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * to, our logic breaks. This check will generate a warning if that happens. 330dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 331dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project typecheck(mtime, sb.st_mtime); 332dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 333dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 334dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * In a single wolf-like pass, find an available slot and, in case none 335dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * exist, find and record the least-recently-modified file. 336dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 337dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (i = 0; i < MAX_TOMBSTONES; i++) { 338dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(path, sizeof(path), TOMBSTONE_DIR"/tombstone_%02d", i); 339dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 340dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!stat(path, &sb)) { 341dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (sb.st_mtime < mtime) { 342dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project oldest = i; 343dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mtime = sb.st_mtime; 344dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 345dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 346dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 347dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (errno != ENOENT) 348dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 349dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 350dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = open(path, O_CREAT | O_EXCL | O_WRONLY, 0600); 351dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) 352dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; /* raced ? */ 353dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 354dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fchown(fd, AID_SYSTEM, AID_SYSTEM); 355dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return fd; 356dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 357dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 358dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* we didn't find an available file, so we clobber the oldest one */ 359dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(path, sizeof(path), TOMBSTONE_DIR"/tombstone_%02d", oldest); 360dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600); 361dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fchown(fd, AID_SYSTEM, AID_SYSTEM); 362dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 363dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return fd; 364dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 365dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 366dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* Return true if some thread is not detached cleanly */ 367dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic bool dump_sibling_thread_report(int tfd, unsigned pid, unsigned tid) 368dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 369dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char task_path[1024]; 370dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 371dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(task_path, "/proc/%d/task", pid); 372dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project DIR *d; 373dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct dirent *de; 374dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int need_cleanup = 0; 375dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 376dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project d = opendir(task_path); 377dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Bail early if cannot open the task directory */ 378dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (d == NULL) { 379dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("Cannot open /proc/%d/task\n", pid); 380dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return false; 381dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 382dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while ((de = readdir(d)) != NULL) { 383dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned new_tid; 384dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Ignore "." and ".." */ 38509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) 386dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 387dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project new_tid = atoi(de->d_name); 388dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* The main thread at fault has been handled individually */ 389dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (new_tid == tid) 390dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 391dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 392dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Skip this thread if cannot ptrace it */ 393dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ptrace(PTRACE_ATTACH, new_tid, 0, 0) < 0) 394dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 395dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 396dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_crash_report(tfd, pid, new_tid, false); 397dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project need_cleanup |= ptrace(PTRACE_DETACH, new_tid, 0, 0); 398dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 399dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project closedir(d); 400dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return need_cleanup != 0; 401dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 402dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 403dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* Return true if some thread is not detached cleanly */ 40409e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Chengstatic bool engrave_tombstone(unsigned pid, unsigned tid, int debug_uid, 405dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int signal) 406dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 407dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 408dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bool need_cleanup = false; 409dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 410dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mkdir(TOMBSTONE_DIR, 0755); 411dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project chown(TOMBSTONE_DIR, AID_SYSTEM, AID_SYSTEM); 412dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 413dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = find_and_open_tombstone(); 414dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) 415dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return need_cleanup; 416dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 417dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_crash_banner(fd, pid, tid, signal); 418dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_crash_report(fd, pid, tid, true); 41909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng /* 420dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * If the user has requested to attach gdb, don't collect the per-thread 421dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * information as it increases the chance to lose track of the process. 422dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 423dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((signed)pid > debug_uid) { 424dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project need_cleanup = dump_sibling_thread_report(fd, pid, tid); 425dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 426dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 427dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 428dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return need_cleanup; 429dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 430dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 431dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int 432dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectwrite_string(const char* file, const char* string) 433dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 434dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int len; 435dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 436dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ssize_t amt; 437dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = open(file, O_RDWR); 438dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len = strlen(string); 439dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) 440dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -errno; 441dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project amt = write(fd, string, len); 442dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 443dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return amt >= 0 ? 0 : -errno; 444dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 445dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 446dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic 447dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid init_debug_led(void) 448dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 449dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // trout leds 450dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/red/brightness", "0"); 451dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/green/brightness", "0"); 452dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/blue/brightness", "0"); 453dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/red/device/blink", "0"); 454dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // sardine leds 455dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/left/cadence", "0,0"); 456dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 457dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 458dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic 459dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid enable_debug_led(void) 460dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 461dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // trout leds 462dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/red/brightness", "255"); 463dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // sardine leds 464dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/left/cadence", "1,0"); 465dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 466dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 467dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic 468dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid disable_debug_led(void) 469dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 470dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // trout leds 471dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/red/brightness", "0"); 472dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // sardine leds 473dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/left/cadence", "0,0"); 474dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 475dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 476dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern int init_getevent(); 477dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern void uninit_getevent(); 478dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern int get_event(struct input_event* event, int timeout); 479dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 480dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void wait_for_user_action(unsigned tid, struct ucred* cr) 481dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 482dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project (void)tid; 483dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* First log a helpful message */ 484dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG( "********************************************************\n" 4853bfdcc979da0f857b014318f3df5d95a0f93eb27Andy McFadden "* Process %d has been suspended while crashing. To\n" 4863bfdcc979da0f857b014318f3df5d95a0f93eb27Andy McFadden "* attach gdbserver for a gdb connection on port 5039:\n" 4873bfdcc979da0f857b014318f3df5d95a0f93eb27Andy McFadden "*\n" 4883bfdcc979da0f857b014318f3df5d95a0f93eb27Andy McFadden "* adb shell gdbserver :5039 --attach %d &\n" 4893bfdcc979da0f857b014318f3df5d95a0f93eb27Andy McFadden "*\n" 4903bfdcc979da0f857b014318f3df5d95a0f93eb27Andy McFadden "* Press HOME key to let the process continue crashing.\n" 49109e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng "********************************************************\n", 492dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project cr->pid, cr->pid); 493dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 4943bfdcc979da0f857b014318f3df5d95a0f93eb27Andy McFadden /* wait for HOME key (TODO: something useful for devices w/o HOME key) */ 495dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (init_getevent() == 0) { 496dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int ms = 1200 / 10; 497dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int dit = 1; 498dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int dah = 3*dit; 499dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int _ = -dit; 500dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int ___ = 3*_; 501dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int _______ = 7*_; 502dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const signed char codes[] = { 503dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dit,_,dit,_,dit,___,dah,_,dah,_,dah,___,dit,_,dit,_,dit,_______ 504dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project }; 505dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project size_t s = 0; 506dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct input_event e; 507dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int home = 0; 508dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_debug_led(); 509dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project enable_debug_led(); 510dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project do { 511dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int timeout = abs((int)(codes[s])) * ms; 512dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int res = get_event(&e, timeout); 513dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (res == 0) { 514dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (e.type==EV_KEY && e.code==KEY_HOME && e.value==0) 515dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project home = 1; 516dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else if (res == 1) { 517dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (++s >= sizeof(codes)/sizeof(*codes)) 518dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project s = 0; 519dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (codes[s] > 0) { 520dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project enable_debug_led(); 521dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 522dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project disable_debug_led(); 523dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 524dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 52509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng } while (!home); 526dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project uninit_getevent(); 527dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 528dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 529dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* don't forget to turn debug led off */ 530dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project disable_debug_led(); 53109e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 532dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* close filedescriptor */ 533dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("debuggerd resuming process %d", cr->pid); 534dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 535dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 536dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void handle_crashing_process(int fd) 537dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 538dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char buf[64]; 539dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct stat s; 540dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned tid; 541dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ucred cr; 54209e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng int n, len, status; 543dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int tid_attach_status = -1; 544dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned retry = 30; 545dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bool need_cleanup = false; 546dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 547dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char value[PROPERTY_VALUE_MAX]; 548dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_get("debug.db.uid", value, "-1"); 549dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int debug_uid = atoi(value); 55009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 551dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("handle_crashing_process(%d)\n", fd); 55209e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 553dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len = sizeof(cr); 554dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &len); 555dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(n != 0) { 556dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("cannot get credentials\n"); 557dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 558dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 559dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 56009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng XLOG("reading tid\n"); 561dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(fd, F_SETFL, O_NONBLOCK); 562dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while((n = read(fd, &tid, sizeof(unsigned))) != sizeof(unsigned)) { 563dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(errno == EINTR) continue; 564dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(errno == EWOULDBLOCK) { 565dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(retry-- > 0) { 566dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project usleep(100 * 1000); 567dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 568dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 569dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("timed out reading tid\n"); 570dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 571dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 572dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("read failure? %s\n", strerror(errno)); 573dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 574dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 575dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 57602526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner snprintf(buf, sizeof buf, "/proc/%d/task/%d", cr.pid, tid); 577dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(stat(buf, &s)) { 5783bfdcc979da0f857b014318f3df5d95a0f93eb27Andy McFadden LOG("tid %d does not exist in pid %d. ignoring debug request\n", 579dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tid, cr.pid); 580dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 581dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return; 582dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 58309e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 584dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("BOOM: pid=%d uid=%d gid=%d tid=%d\n", cr.pid, cr.uid, cr.gid, tid); 585dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 58602526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner /* Note that at this point, the target thread's signal handler 58702526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner * is blocked in a read() call. This gives us the time to PTRACE_ATTACH 58802526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner * to it before it has a chance to really fault. 58902526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner * 59002526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner * After the attach, the thread is stopped, and we write to the file 59102526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner * descriptor to ensure that it will run as soon as we call PTRACE_CONT 59202526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner * below. See details in bionic/libc/linker/debugger.c, in function 59302526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner * debugger_signal_handler(). 59402526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner */ 595dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tid_attach_status = ptrace(PTRACE_ATTACH, tid, 0, 0); 596655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden int ptrace_error = errno; 59702526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner 598655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden if (TEMP_FAILURE_RETRY(write(fd, &tid, 1)) != 1) { 599655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden XLOG("failed responding to client: %s\n", 600655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden strerror(errno)); 601655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden goto done; 602655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden } 60302526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner 604dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(tid_attach_status < 0) { 605655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden LOG("ptrace attach failed: %s\n", strerror(ptrace_error)); 606dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 607dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 608dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 609dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 610dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = -1; 611dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 612655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden const int sleep_time_usec = 200000; /* 0.2 seconds */ 613655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden const int max_total_sleep_usec = 3000000; /* 3 seconds */ 614655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden int loop_limit = max_total_sleep_usec / sleep_time_usec; 615dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for(;;) { 616655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden if (loop_limit-- == 0) { 617655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden LOG("timed out waiting for pid=%d tid=%d uid=%d to die\n", 618655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden cr.pid, tid, cr.uid); 619655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden goto done; 620655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden } 621655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden n = waitpid(tid, &status, __WALL | WNOHANG); 622655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden 623655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden if (n == 0) { 624655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden /* not ready yet */ 625655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden XLOG("not ready yet\n"); 626655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden usleep(sleep_time_usec); 627655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden continue; 628655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden } 62909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 630dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(n < 0) { 631dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(errno == EAGAIN) continue; 632dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("waitpid failed: %s\n", strerror(errno)); 633dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 634dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 635dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 636dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("waitpid: n=%d status=%08x\n", n, status); 637dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 638dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(WIFSTOPPED(status)){ 639dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = WSTOPSIG(status); 640dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project switch(n) { 641dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSTOP: 642dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("stopped -- continuing\n"); 643dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = ptrace(PTRACE_CONT, tid, 0, 0); 644dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(n) { 645dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("ptrace failed: %s\n", strerror(errno)); 646dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 647dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 648dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 64909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 650dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGILL: 651dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGABRT: 652dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGBUS: 653dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGFPE: 654dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSEGV: 655dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSTKFLT: { 656dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("stopped -- fatal signal\n"); 657dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project need_cleanup = engrave_tombstone(cr.pid, tid, debug_uid, n); 658dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kill(tid, SIGSTOP); 659dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 660dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 661dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 662dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project default: 663dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("stopped -- unexpected signal\n"); 664dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 665dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 666dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 667dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("unexpected waitpid response\n"); 668dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 669dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 670dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 67109e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 672dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectdone: 673dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("detaching\n"); 67409e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 675dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* stop the process so we can debug */ 676dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kill(cr.pid, SIGSTOP); 677dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 67809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng /* 67909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng * If a thread has been attached by ptrace, make sure it is detached 680dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * successfully otherwise we will get a zombie. 68109e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng */ 682dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (tid_attach_status == 0) { 683dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int detach_status; 684dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* detach so we can attach gdbserver */ 685dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project detach_status = ptrace(PTRACE_DETACH, tid, 0, 0); 686dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project need_cleanup |= (detach_status != 0); 687dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 688dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 689dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 690dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * if debug.db.uid is set, its value indicates if we should wait 691dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * for user action for the crashing process. 692dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * in this case, we log a message and turn the debug LED on 693dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * waiting for a gdb connection (for instance) 694dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 695dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 696dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((signed)cr.uid <= debug_uid) { 697dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project wait_for_user_action(tid, &cr); 698dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 699dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 700dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* resume stopped process (so it can crash in peace) */ 701dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kill(cr.pid, SIGCONT); 702dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 703dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (need_cleanup) { 704dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("debuggerd committing suicide to free the zombie!\n"); 705dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kill(getpid(), SIGKILL); 706dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 707dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 708dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fd != -1) close(fd); 709dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 710dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 711849249064cae9c1bb23b0204b5d35b832567801eBruce Beare 71209e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Chengint main() 713dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 714dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int s; 715dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct sigaction act; 716849249064cae9c1bb23b0204b5d35b832567801eBruce Beare int logsocket = -1; 71709e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 71844e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden /* 71944e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden * debuggerd crashes can't be reported to debuggerd. Reset all of the 72044e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden * crash handlers. 72144e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden */ 72244e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden signal(SIGILL, SIG_DFL); 72344e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden signal(SIGABRT, SIG_DFL); 72444e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden signal(SIGBUS, SIG_DFL); 72544e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden signal(SIGFPE, SIG_DFL); 72644e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden signal(SIGSEGV, SIG_DFL); 72744e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden signal(SIGSTKFLT, SIG_DFL); 72844e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden signal(SIGPIPE, SIG_DFL); 72944e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden 73009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng logsocket = socket_local_client("logd", 731dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_DGRAM); 732dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(logsocket < 0) { 733dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project logsocket = -1; 734dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 735dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(logsocket, F_SETFD, FD_CLOEXEC); 736dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 737dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 738dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project act.sa_handler = SIG_DFL; 739dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sigemptyset(&act.sa_mask); 740dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sigaddset(&act.sa_mask,SIGCHLD); 741dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project act.sa_flags = SA_NOCLDWAIT; 742dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sigaction(SIGCHLD, &act, 0); 74309e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 74409e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng s = socket_local_server("android:debuggerd", 745dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); 746dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(s < 0) return -1; 747dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(s, F_SETFD, FD_CLOEXEC); 748dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 749dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("debuggerd: " __DATE__ " " __TIME__ "\n"); 75009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 751dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for(;;) { 752dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct sockaddr addr; 753dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project socklen_t alen; 754dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 75509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 756dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project alen = sizeof(addr); 757655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden XLOG("waiting for connection\n"); 758dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = accept(s, &addr, &alen); 759655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden if(fd < 0) { 760655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden XLOG("accept failed: %s\n", strerror(errno)); 761655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden continue; 762655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden } 76309e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 764dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(fd, F_SETFD, FD_CLOEXEC); 765dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 766dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project handle_crashing_process(fd); 767dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 768dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 769dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 770