utils.c revision bfb1f1cc832840b7232c25a91d49eb39aa79687f
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> 26f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <string.h> 27f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <sys/inotify.h> 28f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <sys/stat.h> 29f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <sys/time.h> 30f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <sys/wait.h> 31f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <sys/klog.h> 32f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <time.h> 33f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <unistd.h> 34e7b6cf13f94f66ea446c95ab34040b0a577e43dcJohn Michelau#include <sys/prctl.h> 35f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 36bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown#include <cutils/debugger.h> 37f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <cutils/properties.h> 38f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <cutils/sockets.h> 39f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include <private/android_filesystem_config.h> 40f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 41957983787d7a753d34b582ae0165160f4ebf815cRobert Craig#include <selinux/android.h> 42957983787d7a753d34b582ae0165160f4ebf815cRobert Craig 43f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross#include "dumpstate.h" 44f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 451dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brownstatic const int64_t NANOS_PER_SEC = 1000000000; 461dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown 47bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown/* list of native processes to include in the native dumps */ 48bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brownstatic const char* native_processes_to_dump[] = { 491fc4f80fc38f782f128102795481924a97a2d3c5James Dong "/system/bin/drmserver", 50bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown "/system/bin/mediaserver", 51bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown "/system/bin/sdcard", 52bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown "/system/bin/surfaceflinger", 53bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown NULL, 54bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown}; 55bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown 5654bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferrisstatic uint64_t nanotime() { 5754bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris struct timespec ts; 5854bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris clock_gettime(CLOCK_MONOTONIC, &ts); 5954bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris return (uint64_t)ts.tv_sec * NANOS_PER_SEC + ts.tv_nsec; 6054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris} 6154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris 625ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlockvoid for_each_userid(void (*func)(int), const char *header) { 635ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock DIR *d; 645ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock struct dirent *de; 655ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock 665ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock if (header) printf("\n------ %s ------\n", header); 675ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock func(0); 685ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock 695ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock if (!(d = opendir("/data/system/users"))) { 705ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock printf("Failed to open /data/system/users (%s)\n", strerror(errno)); 715ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock return; 725ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock } 735ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock 745ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock while ((de = readdir(d))) { 755ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock int userid; 765ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock if (de->d_type != DT_DIR || !(userid = atoi(de->d_name))) { 775ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock continue; 785ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock } 795ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock func(userid); 805ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock } 815ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock 825ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock closedir(d); 835ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock} 845ecd4beef8f10f91febf916414c65d3d0e1cf734John Spurlock 850c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Crossstatic void __for_each_pid(void (*helper)(int, const char *, void *), const char *header, void *arg) { 86f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross DIR *d; 87f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross struct dirent *de; 88f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 89f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (!(d = opendir("/proc"))) { 90f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("Failed to open /proc (%s)\n", strerror(errno)); 91f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return; 92f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 93f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 94f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("\n------ %s ------\n", header); 95f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross while ((de = readdir(d))) { 96f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int pid; 97f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int fd; 98f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char cmdpath[255]; 99f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char cmdline[255]; 100f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 101f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (!(pid = atoi(de->d_name))) { 102f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross continue; 103f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 104f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 105f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross sprintf(cmdpath,"/proc/%d/cmdline", pid); 106f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross memset(cmdline, 0, sizeof(cmdline)); 107cd67e9f059e270017d5defd8784c89dd8e6bcde7Nick Kralevich if ((fd = TEMP_FAILURE_RETRY(open(cmdpath, O_RDONLY | O_CLOEXEC))) < 0) { 108f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross strcpy(cmdline, "N/A"); 109f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } else { 1100c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross read(fd, cmdline, sizeof(cmdline) - 1); 111f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross close(fd); 112f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 1130c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross helper(pid, cmdline, arg); 114f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 115f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 116f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross closedir(d); 117f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 118f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 1190c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Crossstatic void for_each_pid_helper(int pid, const char *cmdline, void *arg) { 1200c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross for_each_pid_func *func = arg; 1210c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross func(pid, cmdline); 1220c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross} 1230c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1240c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Crossvoid for_each_pid(for_each_pid_func func, const char *header) { 1250c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross __for_each_pid(for_each_pid_helper, header, func); 1260c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross} 1270c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1280c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Crossstatic void for_each_tid_helper(int pid, const char *cmdline, void *arg) { 1290c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross DIR *d; 1300c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross struct dirent *de; 1310c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross char taskpath[255]; 1320c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross for_each_tid_func *func = arg; 1330c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1340c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross sprintf(taskpath, "/proc/%d/task", pid); 1350c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1360c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross if (!(d = opendir(taskpath))) { 1370c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross printf("Failed to open %s (%s)\n", taskpath, strerror(errno)); 1380c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross return; 1390c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross } 1400c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1410c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross func(pid, pid, cmdline); 1420c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1430c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross while ((de = readdir(d))) { 1440c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross int tid; 1450c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross int fd; 1460c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross char commpath[255]; 1470c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross char comm[255]; 1480c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1490c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross if (!(tid = atoi(de->d_name))) { 1500c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross continue; 1510c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross } 1520c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1530c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross if (tid == pid) 1540c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross continue; 1550c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1560c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross sprintf(commpath,"/proc/%d/comm", tid); 1571493a3974a725d6873f317b774be333ca035a64cColin Cross memset(comm, 0, sizeof(comm)); 158cd67e9f059e270017d5defd8784c89dd8e6bcde7Nick Kralevich if ((fd = TEMP_FAILURE_RETRY(open(commpath, O_RDONLY | O_CLOEXEC))) < 0) { 1590c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross strcpy(comm, "N/A"); 1600c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross } else { 1610c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross char *c; 1620c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross read(fd, comm, sizeof(comm) - 1); 1630c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross close(fd); 1640c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1650c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross c = strrchr(comm, '\n'); 1660c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross if (c) { 1670c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross *c = '\0'; 1680c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross } 1690c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross } 1700c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross func(pid, tid, comm); 1710c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross } 1720c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1730c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross closedir(d); 1740c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross} 1750c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1760c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Crossvoid for_each_tid(for_each_tid_func func, const char *header) { 1770c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross __for_each_pid(for_each_tid_helper, header, func); 1780c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross} 1790c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 1800c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Crossvoid show_wchan(int pid, int tid, const char *name) { 181f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char path[255]; 182f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char buffer[255]; 183f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int fd; 1840c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross char name_buffer[255]; 185f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 186f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross memset(buffer, 0, sizeof(buffer)); 187f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 1880c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross sprintf(path, "/proc/%d/wchan", tid); 189cd67e9f059e270017d5defd8784c89dd8e6bcde7Nick Kralevich if ((fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC))) < 0) { 190f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("Failed to open '%s' (%s)\n", path, strerror(errno)); 191f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return; 192f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 193f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 194f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (read(fd, buffer, sizeof(buffer)) < 0) { 195f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("Failed to read '%s' (%s)\n", path, strerror(errno)); 196f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross goto out_close; 197f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 198f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 1990c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross snprintf(name_buffer, sizeof(name_buffer), "%*s%s", 2000c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross pid == tid ? 0 : 3, "", name); 2010c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross 2020c22e8b31651caf12a2b4d4acef5bc65d486e570Colin Cross printf("%-7d %-32s %s\n", tid, name_buffer, buffer); 203f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 204f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossout_close: 205f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross close(fd); 206f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return; 207f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 208f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 209f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossvoid do_dmesg() { 210f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("------ KERNEL LOG (dmesg) ------\n"); 2115f87b31d8076dff08b2363961b07fc052364fe95Elliott Hughes /* Get size of kernel buffer */ 2125f87b31d8076dff08b2363961b07fc052364fe95Elliott Hughes int size = klogctl(KLOG_SIZE_BUFFER, NULL, 0); 213f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (size <= 0) { 214f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("Unexpected klogctl return value: %d\n\n", size); 215f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return; 216f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 217f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char *buf = (char *) malloc(size + 1); 218f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (buf == NULL) { 219f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("memory allocation failed\n\n"); 220f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return; 221f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 222f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int retval = klogctl(KLOG_READ_ALL, buf, size); 223f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (retval < 0) { 224f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("klogctl failure\n\n"); 225f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross free(buf); 226f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return; 227f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 228f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross buf[retval] = '\0'; 229f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("%s\n\n", buf); 230f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross free(buf); 231f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return; 232f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 233f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 234f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossvoid do_showmap(int pid, const char *name) { 235f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char title[255]; 236f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char arg[255]; 237f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 238f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross sprintf(title, "SHOW MAP %d (%s)", pid, name); 239f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross sprintf(arg, "%d", pid); 240f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross run_command(title, 10, SU_PATH, "root", "showmap", arg, NULL); 241f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 242f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 24354bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferrisstatic int _dump_file_from_fd(const char *title, const char *path, int fd) { 244f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (title) printf("------ %s (%s", title, path); 245f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 246f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (title) { 247f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross struct stat st; 248f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (memcmp(path, "/proc/", 6) && memcmp(path, "/sys/", 5) && !fstat(fd, &st)) { 249f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char stamp[80]; 250f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross time_t mtime = st.st_mtime; 251f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross strftime(stamp, sizeof(stamp), "%Y-%m-%d %H:%M:%S", localtime(&mtime)); 252f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf(": %s", stamp); 253f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 254f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf(") ------\n"); 255f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 256f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 25754bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris bool newline = false; 25854bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris fd_set read_set; 25954bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris struct timeval tm; 26054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris while (1) { 26154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris FD_ZERO(&read_set); 26254bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris FD_SET(fd, &read_set); 26354bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris /* Timeout if no data is read for 30 seconds. */ 26454bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris tm.tv_sec = 30; 26554bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris tm.tv_usec = 0; 26654bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris uint64_t elapsed = nanotime(); 26754bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris int ret = TEMP_FAILURE_RETRY(select(fd + 1, &read_set, NULL, NULL, &tm)); 26854bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris if (ret == -1) { 26954bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris printf("*** %s: select failed: %s\n", path, strerror(errno)); 27054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris newline = true; 27154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris break; 27254bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris } else if (ret == 0) { 27354bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris elapsed = nanotime() - elapsed; 27454bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris printf("*** %s: Timed out after %.3fs\n", path, 27554bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris (float) elapsed / NANOS_PER_SEC); 27654bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris newline = true; 27754bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris break; 27854bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris } else { 27954bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris char buffer[65536]; 28054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris ssize_t bytes_read = TEMP_FAILURE_RETRY(read(fd, buffer, sizeof(buffer))); 28154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris if (bytes_read > 0) { 28254bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris fwrite(buffer, bytes_read, 1, stdout); 28354bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris newline = (buffer[bytes_read-1] == '\n'); 28454bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris } else { 28554bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris if (bytes_read == -1) { 28654bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris printf("*** %s: Failed to read from fd: %s", path, strerror(errno)); 28754bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris newline = true; 28854bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris } 28954bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris break; 29054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris } 291f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 292f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 293bfb1f1cc832840b7232c25a91d49eb39aa79687fElliott Hughes close(fd); 2947dc7f3221f26b771c266a26ec785eb74287922f1Christopher Ferris 295f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (!newline) printf("\n"); 296f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (title) printf("\n"); 297f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return 0; 298f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 299f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 30054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris/* prints the contents of a file */ 30154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferrisint dump_file(const char *title, const char *path) { 30254bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris int fd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_NONBLOCK | O_CLOEXEC)); 30354bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris if (fd < 0) { 30454bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris int err = errno; 30554bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris if (title) printf("------ %s (%s) ------\n", title, path); 30654bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris printf("*** %s: %s\n", path, strerror(err)); 30754bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris if (title) printf("\n"); 30854bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris return -1; 30954bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris } 31054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris return _dump_file_from_fd(title, path, fd); 31154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris} 31254bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris 313326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn/* calls skip to gate calling dump_from_fd recursively 314326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn * in the specified directory. dump_from_fd defaults to 315326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn * dump_file_from_fd above when set to NULL. skip defaults 316326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn * to false when set to NULL. dump_from_fd will always be 317326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn * called with title NULL. 318326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn */ 319326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzynint dump_files(const char *title, const char *dir, 320326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn bool (*skip)(const char *path), 321326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn int (*dump_from_fd)(const char *title, const char *path, int fd)) { 322326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn DIR *dirp; 323326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn struct dirent *d; 324326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn char *newpath = NULL; 325326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn char *slash = "/"; 326326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn int fd, retval = 0; 327326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn 328326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (title) { 329326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn printf("------ %s (%s) ------\n", title, dir); 330326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 331326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn 332326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (dir[strlen(dir) - 1] == '/') { 333326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn ++slash; 334326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 335326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn dirp = opendir(dir); 336326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (dirp == NULL) { 337326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn retval = -errno; 338326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn fprintf(stderr, "%s: %s\n", dir, strerror(errno)); 339326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn return retval; 340326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 341326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn 342326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (!dump_from_fd) { 343326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn dump_from_fd = dump_file_from_fd; 344326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 345326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn for (; ((d = readdir(dirp))); free(newpath), newpath = NULL) { 346326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if ((d->d_name[0] == '.') 347326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn && (((d->d_name[1] == '.') && (d->d_name[2] == '\0')) 348326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn || (d->d_name[1] == '\0'))) { 349326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn continue; 350326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 351326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn asprintf(&newpath, "%s%s%s%s", dir, slash, d->d_name, 352326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn (d->d_type == DT_DIR) ? "/" : ""); 353326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (!newpath) { 354326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn retval = -errno; 355326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn continue; 356326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 357326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (skip && (*skip)(newpath)) { 358326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn continue; 359326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 360326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (d->d_type == DT_DIR) { 361326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn int ret = dump_files(NULL, newpath, skip, dump_from_fd); 362326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (ret < 0) { 363326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn retval = ret; 364326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 365326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn continue; 366326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 367326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn fd = TEMP_FAILURE_RETRY(open(newpath, O_RDONLY | O_NONBLOCK | O_CLOEXEC)); 368326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (fd < 0) { 369326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn retval = fd; 370326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn printf("*** %s: %s\n", newpath, strerror(errno)); 371326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn continue; 372326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 373326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn (*dump_from_fd)(NULL, newpath, fd); 374326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 375326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn closedir(dirp); 376326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn if (title) { 377326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn printf("\n"); 378326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn } 379326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn return retval; 380326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn} 381326842fca4883f1256aa9ed019bb3206ee76fca7Mark Salyzyn 38254bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris/* fd must have been opened with the flag O_NONBLOCK. With this flag set, 38354bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris * it's possible to avoid issues where opening the file itself can get 38454bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris * stuck. 38554bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris */ 38654bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferrisint dump_file_from_fd(const char *title, const char *path, int fd) { 38754bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris int flags = fcntl(fd, F_GETFL); 38854bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris if (flags == -1) { 38954bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris printf("*** %s: failed to get flags on fd %d: %s\n", path, fd, strerror(errno)); 39054bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris return -1; 39154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris } else if (!(flags & O_NONBLOCK)) { 39254bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris printf("*** %s: fd must have O_NONBLOCK set.\n", path); 39354bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris return -1; 39454bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris } 39554bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris return _dump_file_from_fd(title, path, fd); 3961dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown} 3971dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown 3981a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferrisbool waitpid_with_timeout(pid_t pid, int timeout_seconds, int* status) { 3991a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris sigset_t child_mask, old_mask; 4001a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris sigemptyset(&child_mask); 4011a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris sigaddset(&child_mask, SIGCHLD); 4021a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris 4031a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (sigprocmask(SIG_BLOCK, &child_mask, &old_mask) == -1) { 4041a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** sigprocmask failed: %s\n", strerror(errno)); 4051a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris return false; 4061a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 4071a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris 4081a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris struct timespec ts; 4091a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris ts.tv_sec = timeout_seconds; 4101a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris ts.tv_nsec = 0; 4111a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris int ret = TEMP_FAILURE_RETRY(sigtimedwait(&child_mask, NULL, &ts)); 4121a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris int saved_errno = errno; 4131a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris // Set the signals back the way they were. 4141a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (sigprocmask(SIG_SETMASK, &old_mask, NULL) == -1) { 4151a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** sigprocmask failed: %s\n", strerror(errno)); 4161a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (ret == 0) { 4171a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris return false; 4181a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 4191a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 4201a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (ret == -1) { 4211a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris errno = saved_errno; 4221a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (errno == EAGAIN) { 4231a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris errno = ETIMEDOUT; 4241a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } else { 4251a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** sigtimedwait failed: %s\n", strerror(errno)); 4261a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 4271a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris return false; 4281a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 4291a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris 4301a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris pid_t child_pid = waitpid(pid, status, WNOHANG); 4311a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (child_pid != pid) { 4321a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (child_pid != -1) { 4331a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** Waiting for pid %d, got pid %d instead\n", pid, child_pid); 4341a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } else { 4351a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** waitpid failed: %s\n", strerror(errno)); 4361a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 4371a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris return false; 4381a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 4391a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris return true; 4401a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris} 4411a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris 442f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross/* forks a command and waits for it to finish */ 443f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossint run_command(const char *title, int timeout_seconds, const char *command, ...) { 444f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fflush(stdout); 44554bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris uint64_t start = nanotime(); 446f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross pid_t pid = fork(); 447f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 448f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* handle error case */ 449f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (pid < 0) { 450f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("*** fork: %s\n", strerror(errno)); 451f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return pid; 452f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 453f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 454f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* handle child case */ 455f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (pid == 0) { 456f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross const char *args[1024] = {command}; 457f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross size_t arg; 458f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 459e7b6cf13f94f66ea446c95ab34040b0a577e43dcJohn Michelau /* make sure the child dies when dumpstate dies */ 460e7b6cf13f94f66ea446c95ab34040b0a577e43dcJohn Michelau prctl(PR_SET_PDEATHSIG, SIGKILL); 461e7b6cf13f94f66ea446c95ab34040b0a577e43dcJohn Michelau 4622e671bbdb741c2926b6df7b240fdc31c7361f330Andres Morales /* just ignore SIGPIPE, will go down with parent's */ 4632e671bbdb741c2926b6df7b240fdc31c7361f330Andres Morales struct sigaction sigact; 4642e671bbdb741c2926b6df7b240fdc31c7361f330Andres Morales memset(&sigact, 0, sizeof(sigact)); 4652e671bbdb741c2926b6df7b240fdc31c7361f330Andres Morales sigact.sa_handler = SIG_IGN; 4662e671bbdb741c2926b6df7b240fdc31c7361f330Andres Morales sigaction(SIGPIPE, &sigact, NULL); 4672e671bbdb741c2926b6df7b240fdc31c7361f330Andres Morales 468f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross va_list ap; 469f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross va_start(ap, command); 470f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (title) printf("------ %s (%s", title, command); 471f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross for (arg = 1; arg < sizeof(args) / sizeof(args[0]); ++arg) { 472f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross args[arg] = va_arg(ap, const char *); 473f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (args[arg] == NULL) break; 474f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (title) printf(" %s", args[arg]); 475f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 476f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (title) printf(") ------\n"); 477f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fflush(stdout); 478f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 479f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross execvp(command, (char**) args); 480f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("*** exec(%s): %s\n", command, strerror(errno)); 481f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fflush(stdout); 482f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross _exit(-1); 483f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 484f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 485f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* handle parent case */ 4861a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris int status; 4871a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris bool ret = waitpid_with_timeout(pid, timeout_seconds, &status); 4881a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris uint64_t elapsed = nanotime() - start; 4891a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (!ret) { 4901a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (errno == ETIMEDOUT) { 4911a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** %s: Timed out after %.3fs (killing pid %d)\n", command, 4921a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris (float) elapsed / NANOS_PER_SEC, pid); 4931a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } else { 4941a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** %s: Error after %.4fs (killing pid %d)\n", command, 4951a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris (float) elapsed / NANOS_PER_SEC, pid); 496f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 4971a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris kill(pid, SIGTERM); 4981a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (!waitpid_with_timeout(pid, 5, NULL)) { 4991a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris kill(pid, SIGKILL); 5001a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (!waitpid_with_timeout(pid, 5, NULL)) { 5011a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** %s: Cannot kill %d even with SIGKILL.\n", command, pid); 5021a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 503f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 5041a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris return -1; 5051a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } 506f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 5071a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (WIFSIGNALED(status)) { 5081a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** %s: Killed by signal %d\n", command, WTERMSIG(status)); 5091a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris } else if (WIFEXITED(status) && WEXITSTATUS(status) > 0) { 5101a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris printf("*** %s: Exit code %d\n", command, WEXITSTATUS(status)); 511f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 5121a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris if (title) printf("[%s: %.3fs elapsed]\n\n", command, (float)elapsed / NANOS_PER_SEC); 5131a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris 5141a9a3386151d90152cc18d995b9877b50ca84d90Christopher Ferris return status; 515f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 516f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 517f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crosssize_t num_props = 0; 518f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossstatic char* props[2000]; 519f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 520f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossstatic void print_prop(const char *key, const char *name, void *user) { 521f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross (void) user; 522f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (num_props < sizeof(props) / sizeof(props[0])) { 523f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char buf[PROPERTY_KEY_MAX + PROPERTY_VALUE_MAX + 10]; 524f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross snprintf(buf, sizeof(buf), "[%s]: [%s]\n", key, name); 525f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross props[num_props++] = strdup(buf); 526f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 527f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 528f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 529f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossstatic int compare_prop(const void *a, const void *b) { 530f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return strcmp(*(char * const *) a, *(char * const *) b); 531f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 532f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 533f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross/* prints all the system properties */ 534f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossvoid print_properties() { 535f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross size_t i; 536f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross num_props = 0; 537f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross property_list(print_prop, NULL); 538f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross qsort(&props, num_props, sizeof(props[0]), compare_prop); 539f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 540f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("------ SYSTEM PROPERTIES ------\n"); 541f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross for (i = 0; i < num_props; ++i) { 542f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fputs(props[i], stdout); 543f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross free(props[i]); 544f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 545f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross printf("\n"); 546f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 547f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 548f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross/* redirect output to a service control socket */ 549f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Crossvoid redirect_to_socket(FILE *redirect, const char *service) { 550f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int s = android_get_control_socket(service); 551f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (s < 0) { 552f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "android_get_control_socket(%s): %s\n", service, strerror(errno)); 553f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross exit(1); 554f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 555cd67e9f059e270017d5defd8784c89dd8e6bcde7Nick Kralevich fcntl(s, F_SETFD, FD_CLOEXEC); 556f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (listen(s, 4) < 0) { 557f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "listen(control socket): %s\n", strerror(errno)); 558f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross exit(1); 559f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 560f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 561f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross struct sockaddr addr; 562f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross socklen_t alen = sizeof(addr); 563f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int fd = accept(s, &addr, &alen); 564f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (fd < 0) { 565f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "accept(control socket): %s\n", strerror(errno)); 566f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross exit(1); 567f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 568f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 569f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fflush(redirect); 570f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross dup2(fd, fileno(redirect)); 571f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross close(fd); 572f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 573f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 574ff4a4dc7e6e3ead12020b4dc17548d767a419ddeChristopher Ferris/* redirect output to a file */ 575ff4a4dc7e6e3ead12020b4dc17548d767a419ddeChristopher Ferrisvoid redirect_to_file(FILE *redirect, char *path) { 576f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char *chp = path; 577f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 578f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* skip initial slash */ 579f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (chp[0] == '/') 580f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross chp++; 581f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 582f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* create leading directories, if necessary */ 583f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross while (chp && chp[0]) { 584f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross chp = strchr(chp, '/'); 585f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (chp) { 586f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross *chp = 0; 58727f9e6d849fce956c9b8f1ad5c3d9a954501a76bJeff Sharkey mkdir(path, 0770); /* drwxrwx--- */ 588f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross *chp++ = '/'; 589f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 590f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 591f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 592cd67e9f059e270017d5defd8784c89dd8e6bcde7Nick Kralevich int fd = TEMP_FAILURE_RETRY(open(path, O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC, 593ff4a4dc7e6e3ead12020b4dc17548d767a419ddeChristopher Ferris S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)); 594f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (fd < 0) { 595f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "%s: %s\n", path, strerror(errno)); 596f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross exit(1); 597f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 598f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 599ff4a4dc7e6e3ead12020b4dc17548d767a419ddeChristopher Ferris TEMP_FAILURE_RETRY(dup2(fd, fileno(redirect))); 600f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross close(fd); 601f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 602f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 603bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brownstatic bool should_dump_native_traces(const char* path) { 604bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown for (const char** p = native_processes_to_dump; *p; p++) { 605bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown if (!strcmp(*p, path)) { 606bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown return true; 607bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } 608bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } 609bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown return false; 610bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown} 611bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown 612bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown/* dump Dalvik and native stack traces, return the trace file location (NULL if none) */ 613bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brownconst char *dump_traces() { 614bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown const char* result = NULL; 615bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown 616f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char traces_path[PROPERTY_VALUE_MAX] = ""; 617f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross property_get("dalvik.vm.stack-trace-file", traces_path, ""); 618f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (!traces_path[0]) return NULL; 619f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 620f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* move the old traces.txt (if any) out of the way temporarily */ 621f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char anr_traces_path[PATH_MAX]; 622f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross strlcpy(anr_traces_path, traces_path, sizeof(anr_traces_path)); 623f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross strlcat(anr_traces_path, ".anr", sizeof(anr_traces_path)); 624f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (rename(traces_path, anr_traces_path) && errno != ENOENT) { 625f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "rename(%s, %s): %s\n", traces_path, anr_traces_path, strerror(errno)); 626f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return NULL; // Can't rename old traces.txt -- no permission? -- leave it alone instead 627f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 628f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 629f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* make the directory if necessary */ 630f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char anr_traces_dir[PATH_MAX]; 631f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross strlcpy(anr_traces_dir, traces_path, sizeof(anr_traces_dir)); 632f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross char *slash = strrchr(anr_traces_dir, '/'); 633f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (slash != NULL) { 634f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross *slash = '\0'; 635f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (!mkdir(anr_traces_dir, 0775)) { 636f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross chown(anr_traces_dir, AID_SYSTEM, AID_SYSTEM); 637c7f1fe26804ab986b90f3ba007db94f71e94932aNick Kralevich chmod(anr_traces_dir, 0775); 63826288202e7bdf2e897a11bf31a15685d7c20945fStephen Smalley if (selinux_android_restorecon(anr_traces_dir, 0) == -1) { 639957983787d7a753d34b582ae0165160f4ebf815cRobert Craig fprintf(stderr, "restorecon failed for %s: %s\n", anr_traces_dir, strerror(errno)); 640957983787d7a753d34b582ae0165160f4ebf815cRobert Craig } 641f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } else if (errno != EEXIST) { 642f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "mkdir(%s): %s\n", anr_traces_dir, strerror(errno)); 643f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return NULL; 644f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 645f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 646f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 647f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* create a new, empty traces.txt file to receive stack dumps */ 648cd67e9f059e270017d5defd8784c89dd8e6bcde7Nick Kralevich int fd = TEMP_FAILURE_RETRY(open(traces_path, O_CREAT | O_WRONLY | O_TRUNC | O_NOFOLLOW | O_CLOEXEC, 64954bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris 0666)); /* -rw-rw-rw- */ 650f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (fd < 0) { 651f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "%s: %s\n", traces_path, strerror(errno)); 652f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross return NULL; 653f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 654c7f1fe26804ab986b90f3ba007db94f71e94932aNick Kralevich int chmod_ret = fchmod(fd, 0666); 655c7f1fe26804ab986b90f3ba007db94f71e94932aNick Kralevich if (chmod_ret < 0) { 656c7f1fe26804ab986b90f3ba007db94f71e94932aNick Kralevich fprintf(stderr, "fchmod on %s failed: %s\n", traces_path, strerror(errno)); 657c7f1fe26804ab986b90f3ba007db94f71e94932aNick Kralevich close(fd); 658c7f1fe26804ab986b90f3ba007db94f71e94932aNick Kralevich return NULL; 659c7f1fe26804ab986b90f3ba007db94f71e94932aNick Kralevich } 660f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 661f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* walk /proc and kill -QUIT all Dalvik processes */ 662f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross DIR *proc = opendir("/proc"); 663f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (proc == NULL) { 664f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "/proc: %s\n", strerror(errno)); 665bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown goto error_close_fd; 666f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 667f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 668f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* use inotify to find when processes are done dumping */ 669f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int ifd = inotify_init(); 670f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (ifd < 0) { 671f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "inotify_init: %s\n", strerror(errno)); 672bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown goto error_close_fd; 673f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 674f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 675f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int wfd = inotify_add_watch(ifd, traces_path, IN_CLOSE_WRITE); 676f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (wfd < 0) { 677f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "inotify_add_watch(%s): %s\n", traces_path, strerror(errno)); 678bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown goto error_close_ifd; 679f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 680f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 681f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross struct dirent *d; 682f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int dalvik_found = 0; 683f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross while ((d = readdir(proc))) { 684f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross int pid = atoi(d->d_name); 685f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (pid <= 0) continue; 686f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 687bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown char path[PATH_MAX]; 688bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown char data[PATH_MAX]; 689f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross snprintf(path, sizeof(path), "/proc/%d/exe", pid); 690bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown ssize_t len = readlink(path, data, sizeof(data) - 1); 691bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown if (len <= 0) { 692f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross continue; 693f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 694bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown data[len] = '\0'; 695f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 6960d6180f122127a9541e6193e0e6eceb5b08c608cColin Cross if (!strncmp(data, "/system/bin/app_process", strlen("/system/bin/app_process"))) { 697bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown /* skip zygote -- it won't dump its stack anyway */ 698bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown snprintf(path, sizeof(path), "/proc/%d/cmdline", pid); 699cd67e9f059e270017d5defd8784c89dd8e6bcde7Nick Kralevich int cfd = TEMP_FAILURE_RETRY(open(path, O_RDONLY | O_CLOEXEC)); 7001dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown len = read(cfd, data, sizeof(data) - 1); 7011dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown close(cfd); 702bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown if (len <= 0) { 703bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown continue; 704bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } 705bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown data[len] = '\0'; 7060d6180f122127a9541e6193e0e6eceb5b08c608cColin Cross if (!strncmp(data, "zygote", strlen("zygote"))) { 707bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown continue; 708bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } 709bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown 710bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown ++dalvik_found; 71154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris uint64_t start = nanotime(); 712bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown if (kill(pid, SIGQUIT)) { 713bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown fprintf(stderr, "kill(%d, SIGQUIT): %s\n", pid, strerror(errno)); 714bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown continue; 715bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } 716bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown 717bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown /* wait for the writable-close notification from inotify */ 718bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown struct pollfd pfd = { ifd, POLLIN, 0 }; 71985453ecc90a94564e586f0f97c9ec2c0cf831501Nick Vaccaro int ret = poll(&pfd, 1, 5000); /* 5 sec timeout */ 720bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown if (ret < 0) { 721bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown fprintf(stderr, "poll: %s\n", strerror(errno)); 722bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } else if (ret == 0) { 723bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown fprintf(stderr, "warning: timed out dumping pid %d\n", pid); 724bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } else { 725bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown struct inotify_event ie; 726bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown read(ifd, &ie, sizeof(ie)); 727bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } 7281dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown 7291dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown if (lseek(fd, 0, SEEK_END) < 0) { 7301dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown fprintf(stderr, "lseek: %s\n", strerror(errno)); 7311dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown } else { 73231ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris dprintf(fd, "[dump dalvik stack %d: %.3fs elapsed]\n", 7331dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown pid, (float)(nanotime() - start) / NANOS_PER_SEC); 7341dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown } 735bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } else if (should_dump_native_traces(data)) { 736bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown /* dump native process if appropriate */ 737bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown if (lseek(fd, 0, SEEK_END) < 0) { 738bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown fprintf(stderr, "lseek: %s\n", strerror(errno)); 739bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } else { 74031ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris static uint16_t timeout_failures = 0; 74154bcc5ffd5a79f4f194089c58d3de571532bf39bChristopher Ferris uint64_t start = nanotime(); 74231ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris 74331ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris /* If 3 backtrace dumps fail in a row, consider debuggerd dead. */ 74431ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris if (timeout_failures == 3) { 74531ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris dprintf(fd, "too many stack dump failures, skipping...\n"); 74631ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris } else if (dump_backtrace_to_file_timeout(pid, fd, 20) == -1) { 74731ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris dprintf(fd, "dumping failed, likely due to a timeout\n"); 74831ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris timeout_failures++; 74931ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris } else { 75031ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris timeout_failures = 0; 75131ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris } 75231ef85529d86a9db68b002f51ec84fd9938908abChristopher Ferris dprintf(fd, "[dump native stack %d: %.3fs elapsed]\n", 7531dc94e315680b47fe430ef90f46c50a25c92fb6dJeff Brown pid, (float)(nanotime() - start) / NANOS_PER_SEC); 754bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown } 755f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 756f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 757f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 758f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (dalvik_found == 0) { 759f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "Warning: no Dalvik processes found to dump stacks\n"); 760f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 761f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 762f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross static char dump_traces_path[PATH_MAX]; 763f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross strlcpy(dump_traces_path, traces_path, sizeof(dump_traces_path)); 764f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross strlcat(dump_traces_path, ".bugreport", sizeof(dump_traces_path)); 765f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross if (rename(traces_path, dump_traces_path)) { 766f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross fprintf(stderr, "rename(%s, %s): %s\n", traces_path, dump_traces_path, strerror(errno)); 767bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown goto error_close_ifd; 768f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross } 769bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown result = dump_traces_path; 770f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 771f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross /* replace the saved [ANR] traces.txt file */ 772f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross rename(anr_traces_path, traces_path); 773bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown 774bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brownerror_close_ifd: 775bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown close(ifd); 776bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brownerror_close_fd: 777bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown close(fd); 778bf7f49238d0af497d4300f7e611cf831854d6434Jeff Brown return result; 779f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross} 780f45fa6b2853cc32385375a0b63ee39ad6a968869Colin Cross 7812b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandranvoid dump_route_tables() { 7822b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran const char* const RT_TABLES_PATH = "/data/misc/net/rt_tables"; 7832b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran dump_file("RT_TABLES", RT_TABLES_PATH); 784cd67e9f059e270017d5defd8784c89dd8e6bcde7Nick Kralevich FILE* fp = fopen(RT_TABLES_PATH, "re"); 7852b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran if (!fp) { 7862b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran printf("*** %s: %s\n", RT_TABLES_PATH, strerror(errno)); 7872b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran return; 7882b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran } 7892b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran char table[16]; 7902b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran // Each line has an integer (the table number), a space, and a string (the table name). We only 7912b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran // need the table number. It's a 32-bit unsigned number, so max 10 chars. Skip the table name. 7922b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran // Add a fixed max limit so this doesn't go awry. 7932b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran for (int i = 0; i < 64 && fscanf(fp, " %10s %*s", table) == 1; ++i) { 7942b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran run_command("ROUTE TABLE IPv4", 10, "ip", "-4", "route", "show", "table", table, NULL); 7952b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran run_command("ROUTE TABLE IPv6", 10, "ip", "-6", "route", "show", "table", table, NULL); 7962b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran } 7972b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran fclose(fp); 7982b3bba34aec65b612be8d1f52cd124d9c30955f9Sreeram Ramachandran} 799