debuggerd.c revision 41e0cef301637cd1f2daf72953d1230b7fb174b8
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> 3441e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden#include <cutils/logger.h> 35dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/properties.h> 36dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 37dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/input.h> 38dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <private/android_filesystem_config.h> 40dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 41849249064cae9c1bb23b0204b5d35b832567801eBruce Beare#include "debuggerd.h" 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include "utility.h" 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define ANDROID_LOG_INFO 4 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* Log information onto the tombstone */ 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid _LOG(int tfd, bool in_tombstone_only, const char *fmt, ...) 48dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 49ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hu char buf[512]; 5009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project va_list ap; 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project va_start(ap, fmt); 53dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 54dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (tfd >= 0) { 55dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int len; 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project vsnprintf(buf, sizeof(buf), fmt, ap); 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len = strlen(buf); 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(tfd >= 0) write(tfd, buf, len); 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!in_tombstone_only) 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project __android_log_vprint(ANDROID_LOG_INFO, "DEBUG", fmt, ap); 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project// 6f000000-6f01e000 rwxp 00000000 00:0c 16389419 /system/lib/libcomposer.so 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project// 012345678901234567890123456789012345678901234567890123456789 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project// 0 1 2 3 4 5 68dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectmapinfo *parse_maps_line(char *line) 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *mi; 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int len = strlen(line); 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 74136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden if (len < 1) return 0; /* not expected */ 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project line[--len] = 0; 7609e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 77136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden if (len < 50) { 78136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden mi = malloc(sizeof(mapinfo) + 1); 79136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden } else { 80136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden mi = malloc(sizeof(mapinfo) + (len - 47)); 81136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden } 82136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden if (mi == 0) return 0; 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 84136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden mi->isExecutable = (line[20] == 'x'); 8509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->start = strtoul(line, 0, 16); 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->end = strtoul(line + 9, 0, 16); 88ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hu /* To be filled in parse_elf_info if the mapped section starts with 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * elf_header 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->exidx_start = mi->exidx_end = 0; 92ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hu mi->symbols = 0; 93dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->next = 0; 94136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden if (len < 50) { 95136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden mi->name[0] = '\0'; 96136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden } else { 97136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden strcpy(mi->name, line + 49); 98136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden } 99dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 100dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return mi; 101dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 102dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 103dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_build_info(int tfd) 104dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 105dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char fingerprint[PROPERTY_VALUE_MAX]; 106dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 107dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_get("ro.build.fingerprint", fingerprint, "unknown"); 108dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 109dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, "Build fingerprint: '%s'\n", fingerprint); 110dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 111dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 112dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectconst char *get_signame(int sig) 113dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 114dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project switch(sig) { 115dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGILL: return "SIGILL"; 116dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGABRT: return "SIGABRT"; 117dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGBUS: return "SIGBUS"; 118dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGFPE: return "SIGFPE"; 119dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSEGV: return "SIGSEGV"; 120dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSTKFLT: return "SIGSTKFLT"; 121dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project default: return "?"; 122dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 123dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 124dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 12583c6b052918178033875e7ea54ca746cf7303f87Carl Shapiroconst char *get_sigcode(int signo, int code) 12683c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro{ 12783c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro switch (signo) { 12883c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case SIGILL: 12983c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro switch (code) { 13083c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case ILL_ILLOPC: return "ILL_ILLOPC"; 13183c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case ILL_ILLOPN: return "ILL_ILLOPN"; 13283c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case ILL_ILLADR: return "ILL_ILLADR"; 13383c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case ILL_ILLTRP: return "ILL_ILLTRP"; 13483c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case ILL_PRVOPC: return "ILL_PRVOPC"; 13583c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case ILL_PRVREG: return "ILL_PRVREG"; 13683c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case ILL_COPROC: return "ILL_COPROC"; 13783c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case ILL_BADSTK: return "ILL_BADSTK"; 13883c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro } 13983c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro break; 14083c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case SIGBUS: 14183c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro switch (code) { 14283c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case BUS_ADRALN: return "BUS_ADRALN"; 14383c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case BUS_ADRERR: return "BUS_ADRERR"; 14483c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case BUS_OBJERR: return "BUS_OBJERR"; 14583c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro } 14683c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro break; 14783c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case SIGFPE: 14883c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro switch (code) { 14983c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case FPE_INTDIV: return "FPE_INTDIV"; 15083c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case FPE_INTOVF: return "FPE_INTOVF"; 15183c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case FPE_FLTDIV: return "FPE_FLTDIV"; 15283c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case FPE_FLTOVF: return "FPE_FLTOVF"; 15383c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case FPE_FLTUND: return "FPE_FLTUND"; 15483c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case FPE_FLTRES: return "FPE_FLTRES"; 15583c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case FPE_FLTINV: return "FPE_FLTINV"; 15683c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case FPE_FLTSUB: return "FPE_FLTSUB"; 15783c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro } 15883c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro break; 15983c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case SIGSEGV: 16083c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro switch (code) { 16183c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case SEGV_MAPERR: return "SEGV_MAPERR"; 16283c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro case SEGV_ACCERR: return "SEGV_ACCERR"; 16383c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro } 16483c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro break; 16583c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro } 16683c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro return "?"; 16783c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro} 16883c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro 169dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_fault_addr(int tfd, int pid, int sig) 170dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 171dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project siginfo_t si; 17209e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 173dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&si, 0, sizeof(si)); 174dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ptrace(PTRACE_GETSIGINFO, pid, 0, &si)){ 175dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, "cannot get siginfo: %s\n", strerror(errno)); 176136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden } else if (signal_has_address(sig)) { 17783c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro _LOG(tfd, false, "signal %d (%s), code %d (%s), fault addr %08x\n", 17883c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro sig, get_signame(sig), 17983c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro si.si_code, get_sigcode(sig, si.si_code), 18083c6b052918178033875e7ea54ca746cf7303f87Carl Shapiro si.si_addr); 181136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden } else { 182136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden _LOG(tfd, false, "signal %d (%s), code %d (%s), fault addr --------\n", 183136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden sig, get_signame(sig), si.si_code, get_sigcode(sig, si.si_code)); 184dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 185dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 186dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 187dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_crash_banner(int tfd, unsigned pid, unsigned tid, int sig) 188dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 189dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char data[1024]; 190dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char *x = 0; 191dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FILE *fp; 19209e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 193dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(data, "/proc/%d/cmdline", pid); 194dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fp = fopen(data, "r"); 195dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fp) { 196dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project x = fgets(data, 1024, fp); 197dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 198dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 19909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 200dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, 201dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n"); 202dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_build_info(tfd); 203dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, false, "pid: %d, tid: %d >>> %s <<<\n", 204dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pid, tid, x ? x : "UNKNOWN"); 20509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 206dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(sig) dump_fault_addr(tfd, tid, sig); 207dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 208dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 209ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hustatic void parse_elf_info(mapinfo *milist, pid_t pid) 210dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 211dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *mi; 212dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (mi = milist; mi != NULL; mi = mi->next) { 213136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden if (!mi->isExecutable) 214136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden continue; 215136dcc5ce628a1ba600a6818e5cb24d5f15eb016Andy McFadden 216dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project Elf32_Ehdr ehdr; 217dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 218dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&ehdr, 0, sizeof(Elf32_Ehdr)); 21909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng /* Read in sizeof(Elf32_Ehdr) worth of data from the beginning of 220dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * mapped section. 221dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 22209e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng get_remote_struct(pid, (void *) (mi->start), &ehdr, 223dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sizeof(Elf32_Ehdr)); 224dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Check if it has the matching magic words */ 225dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (IS_ELF(ehdr)) { 226dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project Elf32_Phdr phdr; 227dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project Elf32_Phdr *ptr; 228dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int i; 229dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 230dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ptr = (Elf32_Phdr *) (mi->start + ehdr.e_phoff); 231dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (i = 0; i < ehdr.e_phnum; i++) { 232dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Parse the program header */ 2336b657472331ddb2cf5286167ff2460047a321be7Mike Dodd get_remote_struct(pid, (char *) (ptr+i), &phdr, 234dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sizeof(Elf32_Phdr)); 235849249064cae9c1bb23b0204b5d35b832567801eBruce Beare#ifdef __arm__ 236dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Found a EXIDX segment? */ 237dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (phdr.p_type == PT_ARM_EXIDX) { 238dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->exidx_start = mi->start + phdr.p_offset; 239dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->exidx_end = mi->exidx_start + phdr.p_filesz; 240dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 241dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 242849249064cae9c1bb23b0204b5d35b832567801eBruce Beare#endif 243dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 244ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hu 245ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hu /* Try to load symbols from this file */ 246ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hu mi->symbols = symbol_table_create(mi->name); 247dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 248dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 249dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 250dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 251dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid dump_crash_report(int tfd, unsigned pid, unsigned tid, bool at_fault) 252dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 253dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char data[1024]; 254dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FILE *fp; 255dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *milist = 0; 256dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned int sp_list[STACK_CONTENT_DEPTH]; 257dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int stack_depth; 258849249064cae9c1bb23b0204b5d35b832567801eBruce Beare#ifdef __arm__ 259dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int frame0_pc_sane = 1; 260849249064cae9c1bb23b0204b5d35b832567801eBruce Beare#endif 26109e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 262dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!at_fault) { 263dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, true, 264dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---\n"); 265dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project _LOG(tfd, true, "pid: %d, tid: %d\n", pid, tid); 266dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 267dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 268dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_registers(tfd, tid, at_fault); 26909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 270dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Clear stack pointer records */ 271dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(sp_list, 0, sizeof(sp_list)); 272dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 273dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(data, "/proc/%d/maps", pid); 274dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fp = fopen(data, "r"); 275dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fp) { 276dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(fgets(data, 1024, fp)) { 277dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *mi = parse_maps_line(data); 278dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(mi) { 279dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mi->next = milist; 280dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project milist = mi; 281dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 282dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 283dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 284dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 285dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 286ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hu parse_elf_info(milist, tid); 287dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 288849249064cae9c1bb23b0204b5d35b832567801eBruce Beare#if __arm__ 289dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* If stack unwinder fails, use the default solution to dump the stack 290dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * content. 291dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 292dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project stack_depth = unwind_backtrace_with_ptrace(tfd, tid, milist, sp_list, 293dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project &frame0_pc_sane, at_fault); 294dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 295dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* The stack unwinder should at least unwind two levels of stack. If less 296dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * level is seen we make sure at lease pc and lr are dumped. 297dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 298dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (stack_depth < 2) { 299dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_pc_and_lr(tfd, tid, milist, stack_depth, at_fault); 300dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 301dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 3022854db8969cd061d83a931769dfaf4e57108d9dfBen Cheng dump_stack_and_code(tfd, tid, milist, stack_depth, sp_list, at_fault); 3036cc492308712613cd23bee9240b1757428841a2fBruce Beare#elif __i386__ 3046cc492308712613cd23bee9240b1757428841a2fBruce Beare /* If stack unwinder fails, use the default solution to dump the stack 3056cc492308712613cd23bee9240b1757428841a2fBruce Beare * content. 3066cc492308712613cd23bee9240b1757428841a2fBruce Beare */ 3076cc492308712613cd23bee9240b1757428841a2fBruce Beare stack_depth = unwind_backtrace_with_ptrace_x86(tfd, tid, milist,at_fault); 3086cc492308712613cd23bee9240b1757428841a2fBruce Beare#else 3096cc492308712613cd23bee9240b1757428841a2fBruce Beare#error "Unsupported architecture" 310849249064cae9c1bb23b0204b5d35b832567801eBruce Beare#endif 311dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 312dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(milist) { 313dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mapinfo *next = milist->next; 314ae7b91b68008ab09635a97a18e7d07a35e8404aaMeng Hu symbol_table_free(milist->symbols); 315dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project free(milist); 316dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project milist = next; 317dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 318dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 319dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 320dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define MAX_TOMBSTONES 10 321dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 322dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define typecheck(x,y) { \ 323dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project typeof(x) __dummy1; \ 324dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project typeof(y) __dummy2; \ 325dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project (void)(&__dummy1 == &__dummy2); } 326dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 327dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define TOMBSTONE_DIR "/data/tombstones" 328dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 329dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 330dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * find_and_open_tombstone - find an available tombstone slot, if any, of the 331dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * form tombstone_XX where XX is 00 to MAX_TOMBSTONES-1, inclusive. If no 332dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * file is available, we reuse the least-recently-modified file. 333dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 334dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int find_and_open_tombstone(void) 335dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 336dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned long mtime = ULONG_MAX; 337dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct stat sb; 338dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char path[128]; 339dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd, i, oldest = 0; 340dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 341dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 342dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * XXX: Our stat.st_mtime isn't time_t. If it changes, as it probably ought 343dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * to, our logic breaks. This check will generate a warning if that happens. 344dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 345dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project typecheck(mtime, sb.st_mtime); 346dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 347dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 348dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * In a single wolf-like pass, find an available slot and, in case none 349dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * exist, find and record the least-recently-modified file. 350dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 351dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (i = 0; i < MAX_TOMBSTONES; i++) { 352dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(path, sizeof(path), TOMBSTONE_DIR"/tombstone_%02d", i); 353dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 354dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!stat(path, &sb)) { 355dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (sb.st_mtime < mtime) { 356dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project oldest = i; 357dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mtime = sb.st_mtime; 358dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 359dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 360dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 361dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (errno != ENOENT) 362dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 363dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 364dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = open(path, O_CREAT | O_EXCL | O_WRONLY, 0600); 365dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) 366dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; /* raced ? */ 367dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 368dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fchown(fd, AID_SYSTEM, AID_SYSTEM); 369dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return fd; 370dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 371dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 372dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* we didn't find an available file, so we clobber the oldest one */ 373dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(path, sizeof(path), TOMBSTONE_DIR"/tombstone_%02d", oldest); 374dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600); 375dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fchown(fd, AID_SYSTEM, AID_SYSTEM); 376dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 377dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return fd; 378dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 379dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 380dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* Return true if some thread is not detached cleanly */ 381dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic bool dump_sibling_thread_report(int tfd, unsigned pid, unsigned tid) 382dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 383dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char task_path[1024]; 384dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 385dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sprintf(task_path, "/proc/%d/task", pid); 386dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project DIR *d; 387dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct dirent *de; 388dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int need_cleanup = 0; 389dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 390dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project d = opendir(task_path); 391dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Bail early if cannot open the task directory */ 392dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (d == NULL) { 393dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("Cannot open /proc/%d/task\n", pid); 394dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return false; 395dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 396dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while ((de = readdir(d)) != NULL) { 397dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned new_tid; 398dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Ignore "." and ".." */ 39909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) 400dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 401dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project new_tid = atoi(de->d_name); 402dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* The main thread at fault has been handled individually */ 403dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (new_tid == tid) 404dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 405dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 406dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Skip this thread if cannot ptrace it */ 407dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ptrace(PTRACE_ATTACH, new_tid, 0, 0) < 0) 408dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 409dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 410dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_crash_report(tfd, pid, new_tid, false); 411dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project need_cleanup |= ptrace(PTRACE_DETACH, new_tid, 0, 0); 412dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 413dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project closedir(d); 414dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return need_cleanup != 0; 415dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 416dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 41741e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden/* 41841e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden * Reads the contents of the specified log device, filters out the entries 41941e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden * that don't match the specified pid, and writes them to the tombstone file. 42041e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden */ 42141e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFaddenstatic void dump_log_file(int tfd, unsigned pid, const char* filename) 42241e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden{ 42341e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden int logfd = open(filename, O_RDONLY | O_NONBLOCK); 42441e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden if (logfd < 0) { 42541e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden XLOG("Unable to open %s: %s\n", filename, strerror(errno)); 42641e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden return; 42741e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden } 42841e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden _LOG(tfd, true, "--------- log %s\n", filename); 42941e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden 43041e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden union { 43141e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden unsigned char buf[LOGGER_ENTRY_MAX_LEN + 1]; 43241e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden struct logger_entry entry; 43341e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden } log_entry; 43441e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden 43541e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden while (true) { 43641e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden ssize_t actual = read(logfd, log_entry.buf, LOGGER_ENTRY_MAX_LEN); 43741e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden if (actual < 0) { 43841e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden if (errno == EINTR) { 43941e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden /* interrupted by signal, retry */ 44041e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden continue; 44141e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden } else if (errno == EAGAIN) { 44241e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden /* non-blocking EOF; we're done */ 44341e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden break; 44441e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden } else { 44541e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden _LOG(tfd, true, "Error while reading log: %s\n", 44641e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden strerror(errno)); 44741e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden break; 44841e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden } 44941e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden } else if (actual == 0) { 45041e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden _LOG(tfd, true, "Got zero bytes while reading log: %s\n", 45141e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden strerror(errno)); 45241e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden break; 45341e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden } 45441e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden 45541e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden /* 45641e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden * NOTE: if you XLOG something here, this will spin forever, 45741e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden * because you will be writing as fast as you're reading. Any 45841e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden * high-frequency debug diagnostics should just be written to 45941e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden * the tombstone file. 46041e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden */ 46141e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden 46241e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden struct logger_entry* entry = &log_entry.entry; 46341e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden 46441e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden if (entry->pid != (int32_t) pid) { 46541e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden /* wrong pid, ignore */ 46641e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden continue; 46741e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden } 46841e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden 46941e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden /* 47041e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden * Msg format is: <priority:1><tag:N>\0<message:N>\0 47141e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden * 47241e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden * We want to display it in the same format as "logcat -v threadtime" 47341e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden * (although in this case the pid is redundant). 47441e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden * 47541e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden * TODO: scan for line breaks ('\n') and display each text line 47641e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden * on a separate line, prefixed with the header, like logcat does. 47741e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden */ 47841e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden static const char* kPrioChars = "!.VDIWEFS"; 47941e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden unsigned char prio = entry->msg[0]; 48041e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden const char* tag = entry->msg + 1; 48141e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden const char* msg = tag + strlen(tag) + 1; 48241e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden 48341e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden log_entry.entry.msg[entry->len] = '\0'; 48441e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden 48541e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden char timeBuf[32]; 48641e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden time_t sec = (time_t) entry->sec; 48741e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden struct tm tmBuf; 48841e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden struct tm* ptm; 48941e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden ptm = localtime_r(&sec, &tmBuf); 49041e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden strftime(timeBuf, sizeof(timeBuf), "%m-%d %H:%M:%S", ptm); 49141e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden 49241e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden _LOG(tfd, true, "%s.%03ld %5d %5d %c %-8s: %s\n", 49341e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden timeBuf, entry->nsec / 1000000, 49441e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden entry->pid, entry->tid, 49541e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden (prio < strlen(kPrioChars) ? kPrioChars[prio] : '?'), 49641e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden tag, msg); 49741e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden } 49841e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden 49941e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden close(logfd); 50041e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden} 50141e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden 50241e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden/* 50341e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden * Dumps the logs generated by the specified pid to the tombstone, from both 50441e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden * "system" and "main" log devices. Ideally we'd interleave the output. 50541e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden */ 50641e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFaddenstatic void dump_logs(int tfd, unsigned pid) 50741e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden{ 50841e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden dump_log_file(tfd, pid, "/dev/log/system"); 50941e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden dump_log_file(tfd, pid, "/dev/log/main"); 51041e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden} 51141e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden 512dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* Return true if some thread is not detached cleanly */ 51309e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Chengstatic bool engrave_tombstone(unsigned pid, unsigned tid, int debug_uid, 514dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int signal) 515dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 516dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 517dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bool need_cleanup = false; 518dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 519dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project mkdir(TOMBSTONE_DIR, 0755); 520dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project chown(TOMBSTONE_DIR, AID_SYSTEM, AID_SYSTEM); 521dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 522dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = find_and_open_tombstone(); 523dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) 524dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return need_cleanup; 525dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 526dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_crash_banner(fd, pid, tid, signal); 527dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dump_crash_report(fd, pid, tid, true); 52809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng /* 529dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * If the user has requested to attach gdb, don't collect the per-thread 530dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * information as it increases the chance to lose track of the process. 531dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 532dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((signed)pid > debug_uid) { 533dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project need_cleanup = dump_sibling_thread_report(fd, pid, tid); 534dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 535dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 53641e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden /* don't copy log to tombstone unless this is a dev device */ 53741e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden char value[PROPERTY_VALUE_MAX]; 53841e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden property_get("ro.debuggable", value, "0"); 53941e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden if (value[0] == '1') { 54041e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden dump_logs(fd, pid); 54141e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden } 54241e0cef301637cd1f2daf72953d1230b7fb174b8Andy McFadden 543dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 544dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return need_cleanup; 545dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 546dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 547dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int 548dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectwrite_string(const char* file, const char* string) 549dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 550dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int len; 551dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 552dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ssize_t amt; 553dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = open(file, O_RDWR); 554dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len = strlen(string); 555dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) 556dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -errno; 557dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project amt = write(fd, string, len); 558dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 559dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return amt >= 0 ? 0 : -errno; 560dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 561dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 562dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic 563dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid init_debug_led(void) 564dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 565dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // trout leds 566dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/red/brightness", "0"); 567dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/green/brightness", "0"); 568dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/blue/brightness", "0"); 569dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/red/device/blink", "0"); 570dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // sardine leds 571dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/left/cadence", "0,0"); 572dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 573dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 574dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic 575dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid enable_debug_led(void) 576dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 577dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // trout leds 578dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/red/brightness", "255"); 579dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // sardine leds 580dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/left/cadence", "1,0"); 581dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 582dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 583dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic 584dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid disable_debug_led(void) 585dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 586dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // trout leds 587dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/red/brightness", "0"); 588dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project // sardine leds 589dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_string("/sys/class/leds/left/cadence", "0,0"); 590dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 591dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 592dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern int init_getevent(); 593dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern void uninit_getevent(); 594dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern int get_event(struct input_event* event, int timeout); 595dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 596dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void wait_for_user_action(unsigned tid, struct ucred* cr) 597dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 598dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project (void)tid; 599dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* First log a helpful message */ 600dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG( "********************************************************\n" 6013bfdcc979da0f857b014318f3df5d95a0f93eb27Andy McFadden "* Process %d has been suspended while crashing. To\n" 6023bfdcc979da0f857b014318f3df5d95a0f93eb27Andy McFadden "* attach gdbserver for a gdb connection on port 5039:\n" 6033bfdcc979da0f857b014318f3df5d95a0f93eb27Andy McFadden "*\n" 6043bfdcc979da0f857b014318f3df5d95a0f93eb27Andy McFadden "* adb shell gdbserver :5039 --attach %d &\n" 6053bfdcc979da0f857b014318f3df5d95a0f93eb27Andy McFadden "*\n" 6063bfdcc979da0f857b014318f3df5d95a0f93eb27Andy McFadden "* Press HOME key to let the process continue crashing.\n" 60709e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng "********************************************************\n", 608dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project cr->pid, cr->pid); 609dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 6103bfdcc979da0f857b014318f3df5d95a0f93eb27Andy McFadden /* wait for HOME key (TODO: something useful for devices w/o HOME key) */ 611dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (init_getevent() == 0) { 612dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int ms = 1200 / 10; 613dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int dit = 1; 614dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int dah = 3*dit; 615dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int _ = -dit; 616dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int ___ = 3*_; 617dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int _______ = 7*_; 618dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const signed char codes[] = { 619dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project dit,_,dit,_,dit,___,dah,_,dah,_,dah,___,dit,_,dit,_,dit,_______ 620dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project }; 621dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project size_t s = 0; 622dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct input_event e; 623dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int home = 0; 624dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_debug_led(); 625dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project enable_debug_led(); 626dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project do { 627dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int timeout = abs((int)(codes[s])) * ms; 628dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int res = get_event(&e, timeout); 629dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (res == 0) { 630dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (e.type==EV_KEY && e.code==KEY_HOME && e.value==0) 631dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project home = 1; 632dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else if (res == 1) { 633dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (++s >= sizeof(codes)/sizeof(*codes)) 634dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project s = 0; 635dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (codes[s] > 0) { 636dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project enable_debug_led(); 637dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 638dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project disable_debug_led(); 639dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 640dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 64109e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng } while (!home); 642dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project uninit_getevent(); 643dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 644dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 645dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* don't forget to turn debug led off */ 646dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project disable_debug_led(); 64709e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 648dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* close filedescriptor */ 649dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("debuggerd resuming process %d", cr->pid); 650dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 651dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 652dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void handle_crashing_process(int fd) 653dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 654dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char buf[64]; 655dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct stat s; 656dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned tid; 657dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ucred cr; 65809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng int n, len, status; 659dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int tid_attach_status = -1; 660dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned retry = 30; 661dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project bool need_cleanup = false; 662dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 663dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char value[PROPERTY_VALUE_MAX]; 664dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_get("debug.db.uid", value, "-1"); 665dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int debug_uid = atoi(value); 66609e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 667dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("handle_crashing_process(%d)\n", fd); 66809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 669dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project len = sizeof(cr); 670dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &len); 671dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(n != 0) { 672dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("cannot get credentials\n"); 673dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 674dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 675dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 67609e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng XLOG("reading tid\n"); 677dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(fd, F_SETFL, O_NONBLOCK); 678dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while((n = read(fd, &tid, sizeof(unsigned))) != sizeof(unsigned)) { 679dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(errno == EINTR) continue; 680dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(errno == EWOULDBLOCK) { 681dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(retry-- > 0) { 682dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project usleep(100 * 1000); 683dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 684dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 685dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("timed out reading tid\n"); 686dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 687dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 688dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("read failure? %s\n", strerror(errno)); 689dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 690dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 691dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 69202526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner snprintf(buf, sizeof buf, "/proc/%d/task/%d", cr.pid, tid); 693dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(stat(buf, &s)) { 6943bfdcc979da0f857b014318f3df5d95a0f93eb27Andy McFadden LOG("tid %d does not exist in pid %d. ignoring debug request\n", 695dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tid, cr.pid); 696dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 697dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return; 698dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 69909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 700dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("BOOM: pid=%d uid=%d gid=%d tid=%d\n", cr.pid, cr.uid, cr.gid, tid); 701dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 70202526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner /* Note that at this point, the target thread's signal handler 70302526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner * is blocked in a read() call. This gives us the time to PTRACE_ATTACH 70402526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner * to it before it has a chance to really fault. 70502526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner * 70602526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner * After the attach, the thread is stopped, and we write to the file 70702526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner * descriptor to ensure that it will run as soon as we call PTRACE_CONT 70802526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner * below. See details in bionic/libc/linker/debugger.c, in function 70902526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner * debugger_signal_handler(). 71002526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner */ 711dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tid_attach_status = ptrace(PTRACE_ATTACH, tid, 0, 0); 712655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden int ptrace_error = errno; 71302526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner 714655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden if (TEMP_FAILURE_RETRY(write(fd, &tid, 1)) != 1) { 715655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden XLOG("failed responding to client: %s\n", 716655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden strerror(errno)); 717655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden goto done; 718655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden } 71902526d486803de153d03851f4d5f9be7c555e46cDavid 'Digit' Turner 720dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(tid_attach_status < 0) { 721655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden LOG("ptrace attach failed: %s\n", strerror(ptrace_error)); 722dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 723dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 724dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 725dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 726dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = -1; 727dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 728655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden const int sleep_time_usec = 200000; /* 0.2 seconds */ 729655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden const int max_total_sleep_usec = 3000000; /* 3 seconds */ 730655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden int loop_limit = max_total_sleep_usec / sleep_time_usec; 731dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for(;;) { 732655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden if (loop_limit-- == 0) { 733655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden LOG("timed out waiting for pid=%d tid=%d uid=%d to die\n", 734655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden cr.pid, tid, cr.uid); 735655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden goto done; 736655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden } 737655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden n = waitpid(tid, &status, __WALL | WNOHANG); 738655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden 739655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden if (n == 0) { 740655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden /* not ready yet */ 741655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden XLOG("not ready yet\n"); 742655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden usleep(sleep_time_usec); 743655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden continue; 744655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden } 74509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 746dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(n < 0) { 747dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(errno == EAGAIN) continue; 748dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("waitpid failed: %s\n", strerror(errno)); 749dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 750dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 751dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 752dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("waitpid: n=%d status=%08x\n", n, status); 753dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 754dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(WIFSTOPPED(status)){ 755dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = WSTOPSIG(status); 756dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project switch(n) { 757dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSTOP: 758dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("stopped -- continuing\n"); 759dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project n = ptrace(PTRACE_CONT, tid, 0, 0); 760dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(n) { 761dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("ptrace failed: %s\n", strerror(errno)); 762dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 763dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 764dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 76509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 766dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGILL: 767dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGABRT: 768dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGBUS: 769dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGFPE: 770dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSEGV: 771dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case SIGSTKFLT: { 772dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("stopped -- fatal signal\n"); 773dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project need_cleanup = engrave_tombstone(cr.pid, tid, debug_uid, n); 774dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kill(tid, SIGSTOP); 775dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 776dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 777dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 778dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project default: 779dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("stopped -- unexpected signal\n"); 780dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 781dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 782dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 783dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("unexpected waitpid response\n"); 784dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto done; 785dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 786dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 78709e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 788dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectdone: 789dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project XLOG("detaching\n"); 79009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 791dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* stop the process so we can debug */ 792dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kill(cr.pid, SIGSTOP); 793dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 79409e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng /* 79509e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng * If a thread has been attached by ptrace, make sure it is detached 796dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * successfully otherwise we will get a zombie. 79709e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng */ 798dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (tid_attach_status == 0) { 799dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int detach_status; 800dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* detach so we can attach gdbserver */ 801dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project detach_status = ptrace(PTRACE_DETACH, tid, 0, 0); 802dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project need_cleanup |= (detach_status != 0); 803dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 804dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 805dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 806dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * if debug.db.uid is set, its value indicates if we should wait 807dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * for user action for the crashing process. 808dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * in this case, we log a message and turn the debug LED on 809dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * waiting for a gdb connection (for instance) 810dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 811dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 812dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((signed)cr.uid <= debug_uid) { 813dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project wait_for_user_action(tid, &cr); 814dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 815dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 816dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* resume stopped process (so it can crash in peace) */ 817dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kill(cr.pid, SIGCONT); 818dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 819dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (need_cleanup) { 820dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("debuggerd committing suicide to free the zombie!\n"); 821dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project kill(getpid(), SIGKILL); 822dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 823dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 824dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fd != -1) close(fd); 825dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 826dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 827849249064cae9c1bb23b0204b5d35b832567801eBruce Beare 82809e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Chengint main() 829dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 830dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int s; 831dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct sigaction act; 832849249064cae9c1bb23b0204b5d35b832567801eBruce Beare int logsocket = -1; 83309e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 83444e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden /* 83544e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden * debuggerd crashes can't be reported to debuggerd. Reset all of the 83644e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden * crash handlers. 83744e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden */ 83844e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden signal(SIGILL, SIG_DFL); 83944e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden signal(SIGABRT, SIG_DFL); 84044e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden signal(SIGBUS, SIG_DFL); 84144e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden signal(SIGFPE, SIG_DFL); 84244e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden signal(SIGSEGV, SIG_DFL); 84344e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden signal(SIGSTKFLT, SIG_DFL); 84444e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden signal(SIGPIPE, SIG_DFL); 84544e12eceecd0be8ba832a003733bfc859b2ccd9dAndy McFadden 84609e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng logsocket = socket_local_client("logd", 847dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_DGRAM); 848dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(logsocket < 0) { 849dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project logsocket = -1; 850dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 851dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(logsocket, F_SETFD, FD_CLOEXEC); 852dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 853dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 854dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project act.sa_handler = SIG_DFL; 855dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sigemptyset(&act.sa_mask); 856dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sigaddset(&act.sa_mask,SIGCHLD); 857dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project act.sa_flags = SA_NOCLDWAIT; 858dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sigaction(SIGCHLD, &act, 0); 85909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 86009e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng s = socket_local_server("android:debuggerd", 861dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); 862dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(s < 0) return -1; 863dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(s, F_SETFD, FD_CLOEXEC); 864dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 865dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOG("debuggerd: " __DATE__ " " __TIME__ "\n"); 86609e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 867dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for(;;) { 868dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct sockaddr addr; 869dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project socklen_t alen; 870dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 87109e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 872dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project alen = sizeof(addr); 873655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden XLOG("waiting for connection\n"); 874dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = accept(s, &addr, &alen); 875655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden if(fd < 0) { 876655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden XLOG("accept failed: %s\n", strerror(errno)); 877655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden continue; 878655835be2a0e6d656040f4dd8f7e3e1035734ef7Andy McFadden } 87909e713789e31f640a80af1cddb2fc40cbeb02ad5Ben Cheng 880dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(fd, F_SETFD, FD_CLOEXEC); 881dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 882dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project handle_crashing_process(fd); 883dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 884dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 885dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 886