utils.cpp revision 36b3f6ff17e456dea81501006e33d5fdd1d3b480
1f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross/* 2f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross * Copyright (C) 2008 The Android Open Source Project 3f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross * 4f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross * Licensed under the Apache License, Version 2.0 (the "License"); 5f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross * you may not use this file except in compliance with the License. 6f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross * You may obtain a copy of the License at 7f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross * 8f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross * http://www.apache.org/licenses/LICENSE-2.0 9f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross * 10f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross * Unless required by applicable law or agreed to in writing, software 11f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross * distributed under the License is distributed on an "AS IS" BASIS, 12f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross * See the License for the specific language governing permissions and 14f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross * limitations under the License. 15f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross */ 16f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 17f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <dirent.h> 18f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <errno.h> 19f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <fcntl.h> 20f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <limits.h> 21f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <poll.h> 22f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <signal.h> 23f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <stdarg.h> 24f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <stdio.h> 25f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <stdlib.h> 2636b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme#include <string> 27f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <string.h> 28f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <sys/inotify.h> 29f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <sys/stat.h> 30f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <sys/time.h> 31f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <sys/wait.h> 32f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <sys/klog.h> 33f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <time.h> 34f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <unistd.h> 3536b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme#include <vector> 36e7b6cf13f94f66ea446c95ab34040b0a577e43dcJohn Michelau#include <sys/prctl.h> 37f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 38bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown#include <cutils/debugger.h> 39f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <cutils/properties.h> 40f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <cutils/sockets.h> 41f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <private/android_filesystem_config.h> 42f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 43957983787d7a753d34b582ae0165160f4ebf815cRobert Craig#include <selinux/android.h> 44957983787d7a753d34b582ae0165160f4ebf815cRobert Craig 45f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include "dumpstate.h" 46f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 471dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brownstatic const int64_t NANOS_PER_SEC = 1000000000; 481dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown 49bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown/* list of native processes to include in the native dumps */ 50bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brownstatic const char* native_processes_to_dump[] = { 511fc4f80fc38f782f128102795481924a97a2d3c5James Dong "/system/bin/drmserver", 52bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown "/system/bin/mediaserver", 53bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown "/system/bin/sdcard", 54bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown "/system/bin/surfaceflinger", 55d907b32052aca02ad679e6ae786848d328723080keunyoung "/system/bin/vehicle_network_service", 56bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown NULL, 57bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown}; 58bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown 5954bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferrisstatic uint64_t nanotime() { 6054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris struct timespec ts; 6154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris clock_gettime(CLOCK_MONOTONIC, &ts); 6254bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris return (uint64_t)ts.tv_sec * NANOS_PER_SEC + ts.tv_nsec; 6354bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris} 6454bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris 655ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlockvoid for_each_userid(void (*func)(int), const char *header) { 6693d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme ON_DRY_RUN_RETURN(); 675ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock DIR *d; 685ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock struct dirent *de; 695ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock 705ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock if (header) printf("\n------ %s ------\n", header); 715ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock func(0); 725ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock 735ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock if (!(d = opendir("/data/system/users"))) { 745ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock printf("Failed to open /data/system/users (%s)\n", strerror(errno)); 755ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock return; 765ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock } 775ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock 785ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock while ((de = readdir(d))) { 795ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock int userid; 805ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock if (de->d_type != DT_DIR || !(userid = atoi(de->d_name))) { 815ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock continue; 825ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock } 835ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock func(userid); 845ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock } 855ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock 865ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock closedir(d); 875ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock} 885ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock 890c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Crossstatic void __for_each_pid(void (*helper)(int, const char *, void *), const char *header, void *arg) { 90f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross DIR *d; 91f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross struct dirent *de; 92f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 93f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (!(d = opendir("/proc"))) { 94f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("Failed to open /proc (%s)\n", strerror(errno)); 95f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return; 96f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 97f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 98f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("\n------ %s ------\n", header); 99f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross while ((de = readdir(d))) { 100f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int pid; 101f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int fd; 102f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char cmdpath[255]; 103f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char cmdline[255]; 104f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 105f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (!(pid = atoi(de->d_name))) { 106f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross continue; 107f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 108f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 109f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross sprintf(cmdpath,"/proc/%d/cmdline", pid); 110f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross memset(cmdline, 0, sizeof(cmdline)); 111cd67e9f059e270017d5defd8784c89dd8e6bcde7Nick Kralevich if ((fd = TEMP_FAILURE_RETRY(open(cmdpath, O_RDONLY | O_CLOEXEC))) < 0) { 112f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross strcpy(cmdline, "N/A"); 113f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } else { 1140c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross read(fd, cmdline, sizeof(cmdline) - 1); 115f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross close(fd); 116f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 1170c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross helper(pid, cmdline, arg); 118f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 119f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 120f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross closedir(d); 121f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 122f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 1230c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Crossstatic void for_each_pid_helper(int pid, const char *cmdline, void *arg) { 1248620bb4118a68721d10c29529dc6978847d08d00Felipe Leme for_each_pid_func *func = (for_each_pid_func*) arg; 1250c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross func(pid, cmdline); 1260c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross} 1270c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1280c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Crossvoid for_each_pid(for_each_pid_func func, const char *header) { 12993d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme ON_DRY_RUN_RETURN(); 1308620bb4118a68721d10c29529dc6978847d08d00Felipe Leme __for_each_pid(for_each_pid_helper, header, (void *)func); 1310c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross} 1320c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1330c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Crossstatic void for_each_tid_helper(int pid, const char *cmdline, void *arg) { 1340c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross DIR *d; 1350c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross struct dirent *de; 1360c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross char taskpath[255]; 1378620bb4118a68721d10c29529dc6978847d08d00Felipe Leme for_each_tid_func *func = (for_each_tid_func *) arg; 1380c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1390c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross sprintf(taskpath, "/proc/%d/task", pid); 1400c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1410c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross if (!(d = opendir(taskpath))) { 1420c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross printf("Failed to open %s (%s)\n", taskpath, strerror(errno)); 1430c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross return; 1440c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross } 1450c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1460c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross func(pid, pid, cmdline); 1470c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1480c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross while ((de = readdir(d))) { 1490c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross int tid; 1500c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross int fd; 1510c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross char commpath[255]; 1520c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross char comm[255]; 1530c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1540c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross if (!(tid = atoi(de->d_name))) { 1550c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross continue; 1560c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross } 1570c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1580c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross if (tid == pid) 1590c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross continue; 1600c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1610c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross sprintf(commpath,"/proc/%d/comm", tid); 1621493a3974a725d6873f317b774be333ca035a64cColin Cross memset(comm, 0, sizeof(comm)); 163cd67e9f059e270017d5defd8784c89dd8e6bcde7Nick Kralevich if ((fd = TEMP_FAILURE_RETRY(open(commpath, O_RDONLY | O_CLOEXEC))) < 0) { 1640c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross strcpy(comm, "N/A"); 1650c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross } else { 1660c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross char *c; 1670c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross read(fd, comm, sizeof(comm) - 1); 1680c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross close(fd); 1690c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1700c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross c = strrchr(comm, '\n'); 1710c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross if (c) { 1720c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross *c = '\0'; 1730c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross } 1740c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross } 1750c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross func(pid, tid, comm); 1760c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross } 1770c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1780c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross closedir(d); 1790c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross} 1800c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1810c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Crossvoid for_each_tid(for_each_tid_func func, const char *header) { 18293d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme ON_DRY_RUN_RETURN(); 1838620bb4118a68721d10c29529dc6978847d08d00Felipe Leme __for_each_pid(for_each_tid_helper, header, (void *) func); 1840c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross} 1850c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1860c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Crossvoid show_wchan(int pid, int tid, const char *name) { 18793d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme ON_DRY_RUN_RETURN(); 188f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char path[255]; 189f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char buffer[255]; 190f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int fd; 1910c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross char name_buffer[255]; 192f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 193f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross memset(buffer, 0, sizeof(buffer)); 194f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 1950c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross sprintf(path, "/proc/%d/wchan", tid); 196cd67e9f059e270017d5defd8784c89dd8e6bcde7Nick Kralevich if ((fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC))) < 0) { 197f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("Failed to open '%s' (%s)\n", path, strerror(errno)); 198f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return; 199f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 200f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 201f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (read(fd, buffer, sizeof(buffer)) < 0) { 202f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("Failed to read '%s' (%s)\n", path, strerror(errno)); 203f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross goto out_close; 204f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 205f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 2060c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross snprintf(name_buffer, sizeof(name_buffer), "%*s%s", 2070c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross pid == tid ? 0 : 3, "", name); 2080c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 2090c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross printf("%-7d %-32s %s\n", tid, name_buffer, buffer); 210f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 211f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossout_close: 212f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross close(fd); 213f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return; 214f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 215f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 216f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossvoid do_dmesg() { 217f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("------ KERNEL LOG (dmesg) ------\n"); 21893d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme ON_DRY_RUN_RETURN(); 2195f87b31d8076dff08b2363961b07fc052364fe95Elliott Hughes /* Get size of kernel buffer */ 2205f87b31d8076dff08b2363961b07fc052364fe95Elliott Hughes int size = klogctl(KLOG_SIZE_BUFFER, NULL, 0); 221f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (size <= 0) { 222f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("Unexpected klogctl return value: %d\n\n", size); 223f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return; 224f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 225f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char *buf = (char *) malloc(size + 1); 226f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (buf == NULL) { 227f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("memory allocation failed\n\n"); 228f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return; 229f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 230f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int retval = klogctl(KLOG_READ_ALL, buf, size); 231f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (retval < 0) { 232f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("klogctl failure\n\n"); 233f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross free(buf); 234f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return; 235f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 236f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross buf[retval] = '\0'; 237f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("%s\n\n", buf); 238f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross free(buf); 239f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return; 240f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 241f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 242f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossvoid do_showmap(int pid, const char *name) { 243f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char title[255]; 244f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char arg[255]; 245f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 246f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross sprintf(title, "SHOW MAP %d (%s)", pid, name); 247f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross sprintf(arg, "%d", pid); 248f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross run_command(title, 10, SU_PATH, "root", "showmap", arg, NULL); 249f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 250f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 25154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferrisstatic int _dump_file_from_fd(const char *title, const char *path, int fd) { 252f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (title) { 253ed24d2ae2cd6e8b0afb86efa555f18bcfaf74a64Christopher Ferris printf("------ %s (%s", title, path); 254ed24d2ae2cd6e8b0afb86efa555f18bcfaf74a64Christopher Ferris 255f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross struct stat st; 256ed24d2ae2cd6e8b0afb86efa555f18bcfaf74a64Christopher Ferris // Only show the modification time of non-device files. 257ed24d2ae2cd6e8b0afb86efa555f18bcfaf74a64Christopher Ferris size_t path_len = strlen(path); 258ed24d2ae2cd6e8b0afb86efa555f18bcfaf74a64Christopher Ferris if ((path_len < 6 || memcmp(path, "/proc/", 6)) && 259ed24d2ae2cd6e8b0afb86efa555f18bcfaf74a64Christopher Ferris (path_len < 5 || memcmp(path, "/sys/", 5)) && 260ed24d2ae2cd6e8b0afb86efa555f18bcfaf74a64Christopher Ferris (path_len < 3 || memcmp(path, "/d/", 3)) && 261ed24d2ae2cd6e8b0afb86efa555f18bcfaf74a64Christopher Ferris !fstat(fd, &st)) { 262f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char stamp[80]; 263f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross time_t mtime = st.st_mtime; 264f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross strftime(stamp, sizeof(stamp), "%Y-%m-%d %H:%M:%S", localtime(&mtime)); 265f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf(": %s", stamp); 266f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 267f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf(") ------\n"); 268f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 269ed24d2ae2cd6e8b0afb86efa555f18bcfaf74a64Christopher Ferris ON_DRY_RUN({ close(fd); return 0; }); 270f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 27154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris bool newline = false; 27254bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris fd_set read_set; 27354bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris struct timeval tm; 27454bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris while (1) { 27554bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris FD_ZERO(&read_set); 27654bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris FD_SET(fd, &read_set); 27754bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris /* Timeout if no data is read for 30 seconds. */ 27854bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris tm.tv_sec = 30; 27954bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris tm.tv_usec = 0; 28054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris uint64_t elapsed = nanotime(); 28154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris int ret = TEMP_FAILURE_RETRY(select(fd + 1, &read_set, NULL, NULL, &tm)); 28254bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris if (ret == -1) { 28354bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris printf("*** %s: select failed: %s\n", path, strerror(errno)); 28454bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris newline = true; 28554bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris break; 28654bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris } else if (ret == 0) { 28754bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris elapsed = nanotime() - elapsed; 28854bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris printf("*** %s: Timed out after %.3fs\n", path, 28954bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris (float) elapsed / NANOS_PER_SEC); 29054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris newline = true; 29154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris break; 29254bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris } else { 29354bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris char buffer[65536]; 29454bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris ssize_t bytes_read = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 29554bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris if (bytes_read > 0) { 29654bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris fwrite(buffer, bytes_read, 1, stdout); 29754bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris newline = (buffer[bytes_read-1] == '\n'); 29854bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris } else { 29954bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris if (bytes_read == -1) { 30054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris printf("*** %s: Failed to read from fd: %s", path, strerror(errno)); 30154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris newline = true; 30254bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris } 30354bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris break; 30454bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris } 305f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 306f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 307997abb668b9248c2174c6cf169a0b7c6a02fd2cbElliott Hughes close(fd); 3087dc7f3221f26b771c266a26ec785eb74287922f1Christopher Ferris 309f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (!newline) printf("\n"); 310f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (title) printf("\n"); 311f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return 0; 312f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 313f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 31454bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris/* prints the contents of a file */ 31554bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferrisint dump_file(const char *title, const char *path) { 31654bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris int fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_NONBLOCK | O_CLOEXEC)); 31754bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris if (fd < 0) { 31854bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris int err = errno; 31954bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris printf("*** %s: %s\n", path, strerror(err)); 32054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris if (title) printf("\n"); 32154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris return -1; 32254bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris } 32354bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris return _dump_file_from_fd(title, path, fd); 32454bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris} 32554bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris 326326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn/* calls skip to gate calling dump_from_fd recursively 327326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn * in the specified directory. dump_from_fd defaults to 328326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn * dump_file_from_fd above when set to NULL. skip defaults 329326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn * to false when set to NULL. dump_from_fd will always be 330326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn * called with title NULL. 331326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn */ 332326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzynint dump_files(const char *title, const char *dir, 333326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn bool (*skip)(const char *path), 334326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn int (*dump_from_fd)(const char *title, const char *path, int fd)) { 335326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn DIR *dirp; 336326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn struct dirent *d; 337326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn char *newpath = NULL; 3388620bb4118a68721d10c29529dc6978847d08d00Felipe Leme const char *slash = "/"; 339326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn int fd, retval = 0; 340326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn 341326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (title) { 342326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn printf("------ %s (%s) ------\n", title, dir); 343326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 34493d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme ON_DRY_RUN_RETURN(0); 345326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn 346326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (dir[strlen(dir) - 1] == '/') { 347326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn ++slash; 348326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 349326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn dirp = opendir(dir); 350326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (dirp == NULL) { 351326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn retval = -errno; 352326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn fprintf(stderr, "%s: %s\n", dir, strerror(errno)); 353326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn return retval; 354326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 355326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn 356326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (!dump_from_fd) { 357326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn dump_from_fd = dump_file_from_fd; 358326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 359326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn for (; ((d = readdir(dirp))); free(newpath), newpath = NULL) { 360326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if ((d->d_name[0] == '.') 361326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn && (((d->d_name[1] == '.') && (d->d_name[2] == '\0')) 362326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn || (d->d_name[1] == '\0'))) { 363326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn continue; 364326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 365326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn asprintf(&newpath, "%s%s%s%s", dir, slash, d->d_name, 366326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn (d->d_type == DT_DIR) ? "/" : ""); 367326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (!newpath) { 368326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn retval = -errno; 369326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn continue; 370326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 371326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (skip && (*skip)(newpath)) { 372326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn continue; 373326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 374326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (d->d_type == DT_DIR) { 375326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn int ret = dump_files(NULL, newpath, skip, dump_from_fd); 376326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (ret < 0) { 377326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn retval = ret; 378326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 379326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn continue; 380326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 381326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn fd = TEMP_FAILURE_RETRY(open(newpath, O_RDONLY | O_NONBLOCK | O_CLOEXEC)); 382326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (fd < 0) { 383326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn retval = fd; 384326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn printf("*** %s: %s\n", newpath, strerror(errno)); 385326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn continue; 386326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 387326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn (*dump_from_fd)(NULL, newpath, fd); 388326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 389326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn closedir(dirp); 390326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (title) { 391326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn printf("\n"); 392326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 393326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn return retval; 394326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn} 395326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn 39654bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris/* fd must have been opened with the flag O_NONBLOCK. With this flag set, 39754bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris * it's possible to avoid issues where opening the file itself can get 39854bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris * stuck. 39954bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris */ 40054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferrisint dump_file_from_fd(const char *title, const char *path, int fd) { 40154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris int flags = fcntl(fd, F_GETFL); 40254bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris if (flags == -1) { 40354bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris printf("*** %s: failed to get flags on fd %d: %s\n", path, fd, strerror(errno)); 404ed24d2ae2cd6e8b0afb86efa555f18bcfaf74a64Christopher Ferris close(fd); 40554bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris return -1; 40654bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris } else if (!(flags & O_NONBLOCK)) { 40754bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris printf("*** %s: fd must have O_NONBLOCK set.\n", path); 408ed24d2ae2cd6e8b0afb86efa555f18bcfaf74a64Christopher Ferris close(fd); 40954bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris return -1; 41054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris } 41154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris return _dump_file_from_fd(title, path, fd); 4121dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown} 4131dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown 4141a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferrisbool waitpid_with_timeout(pid_t pid, int timeout_seconds, int* status) { 4151a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris sigset_t child_mask, old_mask; 4161a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris sigemptyset(&child_mask); 4171a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris sigaddset(&child_mask, SIGCHLD); 4181a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris 4191a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (sigprocmask(SIG_BLOCK, &child_mask, &old_mask) == -1) { 4201a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** sigprocmask failed: %s\n", strerror(errno)); 4211a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris return false; 4221a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 4231a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris 4241a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris struct timespec ts; 4251a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris ts.tv_sec = timeout_seconds; 4261a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris ts.tv_nsec = 0; 4271a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris int ret = TEMP_FAILURE_RETRY(sigtimedwait(&child_mask, NULL, &ts)); 4281a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris int saved_errno = errno; 4291a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris // Set the signals back the way they were. 4301a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (sigprocmask(SIG_SETMASK, &old_mask, NULL) == -1) { 4311a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** sigprocmask failed: %s\n", strerror(errno)); 4321a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (ret == 0) { 4331a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris return false; 4341a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 4351a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 4361a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (ret == -1) { 4371a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris errno = saved_errno; 4381a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (errno == EAGAIN) { 4391a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris errno = ETIMEDOUT; 4401a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } else { 4411a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** sigtimedwait failed: %s\n", strerror(errno)); 4421a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 4431a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris return false; 4441a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 4451a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris 4461a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris pid_t child_pid = waitpid(pid, status, WNOHANG); 4471a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (child_pid != pid) { 4481a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (child_pid != -1) { 4491a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** Waiting for pid %d, got pid %d instead\n", pid, child_pid); 4501a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } else { 4511a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** waitpid failed: %s\n", strerror(errno)); 4521a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 4531a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris return false; 4541a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 4551a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris return true; 4561a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris} 4571a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris 458f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross/* forks a command and waits for it to finish */ 459f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossint run_command(const char *title, int timeout_seconds, const char *command, ...) { 460f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fflush(stdout); 46193d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme 46293d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme const char *args[1024] = {command}; 46393d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme size_t arg; 46493d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme va_list ap; 46593d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme va_start(ap, command); 46693d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme if (title) printf("------ %s (%s", title, command); 46793d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme for (arg = 1; arg < sizeof(args) / sizeof(args[0]); ++arg) { 46893d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme args[arg] = va_arg(ap, const char *); 46993d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme if (args[arg] == NULL) break; 47093d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme if (title) printf(" %s", args[arg]); 47193d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme } 47293d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme if (title) printf(") ------\n"); 47393d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme fflush(stdout); 47493d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme 47593d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme ON_DRY_RUN_RETURN(0); 47693d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme 47793d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme return run_command_always(title, timeout_seconds, args); 47893d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme} 47993d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme 48093d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme/* forks a command and waits for it to finish */ 48193d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Lemeint run_command_always(const char *title, int timeout_seconds, const char *args[]) { 48293d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme 48336b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme const char *command = args[0]; 48454bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris uint64_t start = nanotime(); 485f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross pid_t pid = fork(); 486f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 487f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* handle error case */ 488f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (pid < 0) { 489f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("*** fork: %s\n", strerror(errno)); 490f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return pid; 491f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 492f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 493f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* handle child case */ 494f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (pid == 0) { 495f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 496e7b6cf13f94f66ea446c95ab34040b0a577e43dcJohn Michelau /* make sure the child dies when dumpstate dies */ 497e7b6cf13f94f66ea446c95ab34040b0a577e43dcJohn Michelau prctl(PR_SET_PDEATHSIG, SIGKILL); 498e7b6cf13f94f66ea446c95ab34040b0a577e43dcJohn Michelau 4992e671bbdb741c2926b6df7b240fdc31c7361f330Andres Morales /* just ignore SIGPIPE, will go down with parent's */ 5002e671bbdb741c2926b6df7b240fdc31c7361f330Andres Morales struct sigaction sigact; 5012e671bbdb741c2926b6df7b240fdc31c7361f330Andres Morales memset(&sigact, 0, sizeof(sigact)); 5022e671bbdb741c2926b6df7b240fdc31c7361f330Andres Morales sigact.sa_handler = SIG_IGN; 5032e671bbdb741c2926b6df7b240fdc31c7361f330Andres Morales sigaction(SIGPIPE, &sigact, NULL); 5042e671bbdb741c2926b6df7b240fdc31c7361f330Andres Morales 505f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross execvp(command, (char**) args); 506f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("*** exec(%s): %s\n", command, strerror(errno)); 507f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fflush(stdout); 508f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross _exit(-1); 509f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 510f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 511f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* handle parent case */ 5121a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris int status; 5131a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris bool ret = waitpid_with_timeout(pid, timeout_seconds, &status); 5141a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris uint64_t elapsed = nanotime() - start; 5151a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (!ret) { 5161a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (errno == ETIMEDOUT) { 5171a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** %s: Timed out after %.3fs (killing pid %d)\n", command, 5181a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris (float) elapsed / NANOS_PER_SEC, pid); 5191a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } else { 5201a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** %s: Error after %.4fs (killing pid %d)\n", command, 5211a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris (float) elapsed / NANOS_PER_SEC, pid); 522f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 5231a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris kill(pid, SIGTERM); 5241a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (!waitpid_with_timeout(pid, 5, NULL)) { 5251a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris kill(pid, SIGKILL); 5261a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (!waitpid_with_timeout(pid, 5, NULL)) { 5271a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** %s: Cannot kill %d even with SIGKILL.\n", command, pid); 5281a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 529f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 5301a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris return -1; 5311a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 532f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 5331a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (WIFSIGNALED(status)) { 5341a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** %s: Killed by signal %d\n", command, WTERMSIG(status)); 5351a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } else if (WIFEXITED(status) && WEXITSTATUS(status) > 0) { 5361a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** %s: Exit code %d\n", command, WEXITSTATUS(status)); 537f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 5381a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (title) printf("[%s: %.3fs elapsed]\n\n", command, (float)elapsed / NANOS_PER_SEC); 5391a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris 5401a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris return status; 541f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 542f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 54336b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Lemevoid send_broadcast(const std::string& action, const std::vector<std::string>& args) { 54436b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme if (args.size() > 1000) { 54536b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme fprintf(stderr, "send_broadcast: too many arguments (%d)\n", args.size()); 54636b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme return; 54736b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme } 54836b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme const char *am_args[1024] = { "/system/bin/am", "broadcast", "--user", "0", 54936b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme "-a", action.c_str() }; 55036b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme size_t am_index = 5; // Starts at the index of last initial value above. 55136b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme for (const std::string& arg : args) { 55236b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme am_args[++am_index] = arg.c_str(); 55336b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme } 55436b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme // Always terminate with NULL. 55536b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme am_args[am_index + 1] = NULL; 55636b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme run_command_always(NULL, 5, am_args); 55736b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme} 55836b3f6ff17e456dea81501006e33d5fdd1d3b480Felipe Leme 559f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crosssize_t num_props = 0; 560f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossstatic char* props[2000]; 561f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 562f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossstatic void print_prop(const char *key, const char *name, void *user) { 563f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross (void) user; 564f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (num_props < sizeof(props) / sizeof(props[0])) { 565f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char buf[PROPERTY_KEY_MAX + PROPERTY_VALUE_MAX + 10]; 566f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross snprintf(buf, sizeof(buf), "[%s]: [%s]\n", key, name); 567f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross props[num_props++] = strdup(buf); 568f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 569f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 570f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 571f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossstatic int compare_prop(const void *a, const void *b) { 572f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return strcmp(*(char * const *) a, *(char * const *) b); 573f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 574f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 575f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross/* prints all the system properties */ 576f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossvoid print_properties() { 57793d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme printf("------ SYSTEM PROPERTIES ------\n"); 57893d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme ON_DRY_RUN_RETURN(); 579f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross size_t i; 580f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross num_props = 0; 581f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross property_list(print_prop, NULL); 582f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross qsort(&props, num_props, sizeof(props[0]), compare_prop); 583f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 584f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross for (i = 0; i < num_props; ++i) { 585f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fputs(props[i], stdout); 586f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross free(props[i]); 587f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 588f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("\n"); 589f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 590f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 591f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross/* redirect output to a service control socket */ 592f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossvoid redirect_to_socket(FILE *redirect, const char *service) { 593f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int s = android_get_control_socket(service); 594f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (s < 0) { 595f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "android_get_control_socket(%s): %s\n", service, strerror(errno)); 596f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross exit(1); 597f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 598cd67e9f059e270017d5defd8784c89dd8e6bcde7Nick Kralevich fcntl(s, F_SETFD, FD_CLOEXEC); 599f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (listen(s, 4) < 0) { 600f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "listen(control socket): %s\n", strerror(errno)); 601f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross exit(1); 602f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 603f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 604f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross struct sockaddr addr; 605f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross socklen_t alen = sizeof(addr); 606f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int fd = accept(s, &addr, &alen); 607f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (fd < 0) { 608f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "accept(control socket): %s\n", strerror(errno)); 609f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross exit(1); 610f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 611f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 612f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fflush(redirect); 613f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross dup2(fd, fileno(redirect)); 614f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross close(fd); 615f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 616f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 617ff4a4dc7e6e3ead12020b4dc17548d767a419ddeChristopher Ferris/* redirect output to a file */ 618ff4a4dc7e6e3ead12020b4dc17548d767a419ddeChristopher Ferrisvoid redirect_to_file(FILE *redirect, char *path) { 619f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char *chp = path; 620f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 621f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* skip initial slash */ 622f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (chp[0] == '/') 623f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross chp++; 624f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 625f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* create leading directories, if necessary */ 626f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross while (chp && chp[0]) { 627f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross chp = strchr(chp, '/'); 628f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (chp) { 629f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross *chp = 0; 63027f9e6d849fce956c9b8f1ad5c3d9a954501a76bJeff Sharkey mkdir(path, 0770); /* drwxrwx--- */ 631f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross *chp++ = '/'; 632f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 633f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 634f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 635cd67e9f059e270017d5defd8784c89dd8e6bcde7Nick Kralevich int fd = TEMP_FAILURE_RETRY(open(path, O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC, 636ff4a4dc7e6e3ead12020b4dc17548d767a419ddeChristopher Ferris S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)); 637f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (fd < 0) { 638f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "%s: %s\n", path, strerror(errno)); 639f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross exit(1); 640f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 641f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 642ff4a4dc7e6e3ead12020b4dc17548d767a419ddeChristopher Ferris TEMP_FAILURE_RETRY(dup2(fd, fileno(redirect))); 643f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross close(fd); 644f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 645f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 646bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brownstatic bool should_dump_native_traces(const char* path) { 647bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown for (const char** p = native_processes_to_dump; *p; p++) { 648bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown if (!strcmp(*p, path)) { 649bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown return true; 650bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } 651bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } 652bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown return false; 653bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown} 654bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown 655bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown/* dump Dalvik and native stack traces, return the trace file location (NULL if none) */ 656bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brownconst char *dump_traces() { 65793d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme ON_DRY_RUN_RETURN(NULL); 658bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown const char* result = NULL; 659bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown 660f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char traces_path[PROPERTY_VALUE_MAX] = ""; 661f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross property_get("dalvik.vm.stack-trace-file", traces_path, ""); 662f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (!traces_path[0]) return NULL; 663f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 664f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* move the old traces.txt (if any) out of the way temporarily */ 665f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char anr_traces_path[PATH_MAX]; 666f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross strlcpy(anr_traces_path, traces_path, sizeof(anr_traces_path)); 667f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross strlcat(anr_traces_path, ".anr", sizeof(anr_traces_path)); 668f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (rename(traces_path, anr_traces_path) && errno != ENOENT) { 669f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "rename(%s, %s): %s\n", traces_path, anr_traces_path, strerror(errno)); 670f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return NULL; // Can't rename old traces.txt -- no permission? -- leave it alone instead 671f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 672f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 673f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* create a new, empty traces.txt file to receive stack dumps */ 674cd67e9f059e270017d5defd8784c89dd8e6bcde7Nick Kralevich int fd = TEMP_FAILURE_RETRY(open(traces_path, O_CREAT | O_WRONLY | O_TRUNC | O_NOFOLLOW | O_CLOEXEC, 67554bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris 0666)); /* -rw-rw-rw- */ 676f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (fd < 0) { 677f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "%s: %s\n", traces_path, strerror(errno)); 678f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return NULL; 679f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 680c7f1fe26804ab986b90f3ba007db94f71e94932aNick Kralevich int chmod_ret = fchmod(fd, 0666); 681c7f1fe26804ab986b90f3ba007db94f71e94932aNick Kralevich if (chmod_ret < 0) { 682c7f1fe26804ab986b90f3ba007db94f71e94932aNick Kralevich fprintf(stderr, "fchmod on %s failed: %s\n", traces_path, strerror(errno)); 683c7f1fe26804ab986b90f3ba007db94f71e94932aNick Kralevich close(fd); 684c7f1fe26804ab986b90f3ba007db94f71e94932aNick Kralevich return NULL; 685c7f1fe26804ab986b90f3ba007db94f71e94932aNick Kralevich } 686f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 6878620bb4118a68721d10c29529dc6978847d08d00Felipe Leme /* Variables below must be initialized before 'goto' statements */ 6888620bb4118a68721d10c29529dc6978847d08d00Felipe Leme int dalvik_found = 0; 6898620bb4118a68721d10c29529dc6978847d08d00Felipe Leme int ifd, wfd = -1; 6908620bb4118a68721d10c29529dc6978847d08d00Felipe Leme 691f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* walk /proc and kill -QUIT all Dalvik processes */ 692f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross DIR *proc = opendir("/proc"); 693f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (proc == NULL) { 694f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "/proc: %s\n", strerror(errno)); 695bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown goto error_close_fd; 696f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 697f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 698f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* use inotify to find when processes are done dumping */ 6998620bb4118a68721d10c29529dc6978847d08d00Felipe Leme ifd = inotify_init(); 700f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (ifd < 0) { 701f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "inotify_init: %s\n", strerror(errno)); 702bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown goto error_close_fd; 703f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 704f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 7058620bb4118a68721d10c29529dc6978847d08d00Felipe Leme wfd = inotify_add_watch(ifd, traces_path, IN_CLOSE_WRITE); 706f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (wfd < 0) { 707f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "inotify_add_watch(%s): %s\n", traces_path, strerror(errno)); 708bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown goto error_close_ifd; 709f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 710f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 711f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross struct dirent *d; 712f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross while ((d = readdir(proc))) { 713f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int pid = atoi(d->d_name); 714f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (pid <= 0) continue; 715f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 716bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown char path[PATH_MAX]; 717bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown char data[PATH_MAX]; 718f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross snprintf(path, sizeof(path), "/proc/%d/exe", pid); 719bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown ssize_t len = readlink(path, data, sizeof(data) - 1); 720bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown if (len <= 0) { 721f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross continue; 722f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 723bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown data[len] = '\0'; 724f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 7250d6180f122127a9541e6193e0e6eceb5b08c608cColin Cross if (!strncmp(data, "/system/bin/app_process", strlen("/system/bin/app_process"))) { 726bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown /* skip zygote -- it won't dump its stack anyway */ 727bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown snprintf(path, sizeof(path), "/proc/%d/cmdline", pid); 728cd67e9f059e270017d5defd8784c89dd8e6bcde7Nick Kralevich int cfd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC)); 7291dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown len = read(cfd, data, sizeof(data) - 1); 7301dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown close(cfd); 731bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown if (len <= 0) { 732bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown continue; 733bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } 734bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown data[len] = '\0'; 7350d6180f122127a9541e6193e0e6eceb5b08c608cColin Cross if (!strncmp(data, "zygote", strlen("zygote"))) { 736bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown continue; 737bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } 738bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown 739bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown ++dalvik_found; 74054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris uint64_t start = nanotime(); 741bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown if (kill(pid, SIGQUIT)) { 742bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown fprintf(stderr, "kill(%d, SIGQUIT): %s\n", pid, strerror(errno)); 743bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown continue; 744bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } 745bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown 746bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown /* wait for the writable-close notification from inotify */ 747bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown struct pollfd pfd = { ifd, POLLIN, 0 }; 74885453ecc90a94564e586f0f97c9ec2c0cf831501Nick Vaccaro int ret = poll(&pfd, 1, 5000); /* 5 sec timeout */ 749bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown if (ret < 0) { 750bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown fprintf(stderr, "poll: %s\n", strerror(errno)); 751bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } else if (ret == 0) { 752bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown fprintf(stderr, "warning: timed out dumping pid %d\n", pid); 753bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } else { 754bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown struct inotify_event ie; 755bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown read(ifd, &ie, sizeof(ie)); 756bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } 7571dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown 7581dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown if (lseek(fd, 0, SEEK_END) < 0) { 7591dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown fprintf(stderr, "lseek: %s\n", strerror(errno)); 7601dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown } else { 76131ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris dprintf(fd, "[dump dalvik stack %d: %.3fs elapsed]\n", 7621dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown pid, (float)(nanotime() - start) / NANOS_PER_SEC); 7631dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown } 764bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } else if (should_dump_native_traces(data)) { 765bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown /* dump native process if appropriate */ 766bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown if (lseek(fd, 0, SEEK_END) < 0) { 767bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown fprintf(stderr, "lseek: %s\n", strerror(errno)); 768bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } else { 76931ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris static uint16_t timeout_failures = 0; 77054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris uint64_t start = nanotime(); 77131ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris 77231ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris /* If 3 backtrace dumps fail in a row, consider debuggerd dead. */ 77331ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris if (timeout_failures == 3) { 77431ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris dprintf(fd, "too many stack dump failures, skipping...\n"); 77531ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris } else if (dump_backtrace_to_file_timeout(pid, fd, 20) == -1) { 77631ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris dprintf(fd, "dumping failed, likely due to a timeout\n"); 77731ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris timeout_failures++; 77831ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris } else { 77931ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris timeout_failures = 0; 78031ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris } 78131ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris dprintf(fd, "[dump native stack %d: %.3fs elapsed]\n", 7821dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown pid, (float)(nanotime() - start) / NANOS_PER_SEC); 783bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } 784f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 785f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 786f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 787f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (dalvik_found == 0) { 788f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "Warning: no Dalvik processes found to dump stacks\n"); 789f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 790f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 791f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross static char dump_traces_path[PATH_MAX]; 792f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross strlcpy(dump_traces_path, traces_path, sizeof(dump_traces_path)); 793f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross strlcat(dump_traces_path, ".bugreport", sizeof(dump_traces_path)); 794f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (rename(traces_path, dump_traces_path)) { 795f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "rename(%s, %s): %s\n", traces_path, dump_traces_path, strerror(errno)); 796bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown goto error_close_ifd; 797f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 798bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown result = dump_traces_path; 799f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 800f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* replace the saved [ANR] traces.txt file */ 801f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross rename(anr_traces_path, traces_path); 802bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown 803bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brownerror_close_ifd: 804bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown close(ifd); 805bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brownerror_close_fd: 806bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown close(fd); 807bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown return result; 808f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 809f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 8102b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandranvoid dump_route_tables() { 81193d705b6d742e8f00167ff2384e35c2205a6f9daFelipe Leme ON_DRY_RUN_RETURN(); 8122b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran const char* const RT_TABLES_PATH = "/data/misc/net/rt_tables"; 8132b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran dump_file("RT_TABLES", RT_TABLES_PATH); 814cd67e9f059e270017d5defd8784c89dd8e6bcde7Nick Kralevich FILE* fp = fopen(RT_TABLES_PATH, "re"); 8152b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran if (!fp) { 8162b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran printf("*** %s: %s\n", RT_TABLES_PATH, strerror(errno)); 8172b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran return; 8182b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran } 8192b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran char table[16]; 8202b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran // Each line has an integer (the table number), a space, and a string (the table name). We only 8212b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran // need the table number. It's a 32-bit unsigned number, so max 10 chars. Skip the table name. 8222b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran // Add a fixed max limit so this doesn't go awry. 8232b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran for (int i = 0; i < 64 && fscanf(fp, " %10s %*s", table) == 1; ++i) { 8242b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran run_command("ROUTE TABLE IPv4", 10, "ip", "-4", "route", "show", "table", table, NULL); 8252b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran run_command("ROUTE TABLE IPv6", 10, "ip", "-6", "route", "show", "table", table, NULL); 8262b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran } 8272b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran fclose(fp); 8282b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran} 829