1dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 2168021c2827312e17a13d77b54f7d030a08b257bMark Salyzyn * Copyright (C) 2008-2014 The Android Open Source Project 3dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 4dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * you may not use this file except in compliance with the License. 6dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * You may obtain a copy of the License at 7dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 8dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 10dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * See the License for the specific language governing permissions and 14dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * limitations under the License. 15dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 16dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 17dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Intercepts log messages intended for the Android log device. 18dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * When running in the context of the simulator, the messages are 19dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * passed on to the underlying (fake) log device. When not in the 20dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * simulator, messages are printed to stderr. 21dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 22dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <ctype.h> 23dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <errno.h> 24dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <fcntl.h> 256d753faaf8694792433eb78c5c3572efd74a3d54Mark Salyzyn#if !defined(_WIN32) 266d753faaf8694792433eb78c5c3572efd74a3d54Mark Salyzyn#include <pthread.h> 276d753faaf8694792433eb78c5c3572efd74a3d54Mark Salyzyn#endif 28cfd5b080af8de527d768f0ff7902c26af8d49307Mark Salyzyn#include <stdint.h> 29cfd5b080af8de527d768f0ff7902c26af8d49307Mark Salyzyn#include <stdio.h> 30a04464adaf5b95ae953f8577632d3cf8aa2c80a3Mark Salyzyn#include <stdlib.h> 31a04464adaf5b95ae953f8577632d3cf8aa2c80a3Mark Salyzyn#include <string.h> 32cfd5b080af8de527d768f0ff7902c26af8d49307Mark Salyzyn#include <time.h> 33a04464adaf5b95ae953f8577632d3cf8aa2c80a3Mark Salyzyn 346584d0a35ab7722bdc6590525dee29f72f0ec576Mark Salyzyn#include <android/log.h> 35cfd5b080af8de527d768f0ff7902c26af8d49307Mark Salyzyn#include <log/uio.h> 36dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 376d753faaf8694792433eb78c5c3572efd74a3d54Mark Salyzyn#include "fake_log_device.h" 38facf94c74a2cc44f294c4789d36d5c7281c7bc3fMark Salyzyn#include "log_portability.h" 39a04464adaf5b95ae953f8577632d3cf8aa2c80a3Mark Salyzyn 402ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn#define kMaxTagLen 16 /* from the long-dead utils/Log.cpp */ 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 422ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn#define kTagSetSize 16 /* arbitrary */ 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#if 0 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define TRACE(...) printf("fake_log_device: " __VA_ARGS__) 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#else 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define TRACE(...) ((void)0) 48dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 49dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* from the long-dead utils/Log.cpp */ 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projecttypedef enum { 522ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn FORMAT_OFF = 0, 532ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn FORMAT_BRIEF, 542ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn FORMAT_PROCESS, 552ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn FORMAT_TAG, 562ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn FORMAT_THREAD, 572ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn FORMAT_RAW, 582ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn FORMAT_TIME, 592ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn FORMAT_THREADTIME, 602ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn FORMAT_LONG 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} LogFormat; 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Log driver state. 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projecttypedef struct LogState { 672ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* the fake fd that's seen by the user */ 682ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int fakeFd; 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 702ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* a printable name for this fake device */ 712ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn char debugName[sizeof("/dev/log/security")]; 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 732ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* nonzero if this is a binary log */ 742ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int isBinary; 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 762ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* global minimum priority */ 772ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int globalMinPriority; 78dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 792ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* output format */ 802ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn LogFormat outputFormat; 81dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 822ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* tags and priorities */ 832ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn struct { 842ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn char tag[kMaxTagLen]; 852ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int minPriority; 862ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } tagSet[kTagSetSize]; 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} LogState; 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 894a6e5a3b641dd99b658c4c336490371a3a5ae180Yabin Cui#if !defined(_WIN32) 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Locking. Since we're emulating a device, we need to be prepared 92dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * to have multiple callers at the same time. This lock is used 93dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * to both protect the fd list and to prevent LogStates from being 94dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * freed out from under a user. 95dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 96dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic pthread_mutex_t fakeLogDeviceLock = PTHREAD_MUTEX_INITIALIZER; 97dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 982ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzynstatic void lock() { 992ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* 1002ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * If we trigger a signal handler in the middle of locked activity and the 1012ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * signal handler logs a message, we could get into a deadlock state. 1022ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn */ 1032ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn pthread_mutex_lock(&fakeLogDeviceLock); 104dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 105dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 1062ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzynstatic void unlock() { 1072ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn pthread_mutex_unlock(&fakeLogDeviceLock); 108dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 1092d2e0a5c5eb0b0ea2fe1349da50e22228965faf9Mark Salyzyn 1102ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn#else // !defined(_WIN32) 1112d2e0a5c5eb0b0ea2fe1349da50e22228965faf9Mark Salyzyn 112c2e7d4965f86dbe90cece6d25e91d934a698d195Mark Salyzyn#define lock() ((void)0) 113c2e7d4965f86dbe90cece6d25e91d934a698d195Mark Salyzyn#define unlock() ((void)0) 1142d2e0a5c5eb0b0ea2fe1349da50e22228965faf9Mark Salyzyn 1154a6e5a3b641dd99b658c4c336490371a3a5ae180Yabin Cui#endif // !defined(_WIN32) 116dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 117dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 118dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * File descriptor management. 119dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 120dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define FAKE_FD_BASE 10000 1218edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn#define MAX_OPEN_LOGS 8 1228edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzynstatic LogState openLogTable[MAX_OPEN_LOGS]; 123dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 124dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 125dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Allocate an fd and associate a new LogState with it. 126dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * The fd is available via the fakeFd field of the return value. 127dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 1282ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzynstatic LogState* createLogState() { 1292ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn size_t i; 1302ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 1312ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn for (i = 0; i < (sizeof(openLogTable) / sizeof(openLogTable[0])); i++) { 1322ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (openLogTable[i].fakeFd == 0) { 1332ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn openLogTable[i].fakeFd = FAKE_FD_BASE + i; 1342ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return &openLogTable[i]; 135dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 1362ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 1372ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return NULL; 138dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 139dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 140dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 141dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Translate an fd to a LogState. 142dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 1432ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzynstatic LogState* fdToLogState(int fd) { 1442ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (fd >= FAKE_FD_BASE && fd < FAKE_FD_BASE + MAX_OPEN_LOGS) { 1452ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return &openLogTable[fd - FAKE_FD_BASE]; 1462ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 1472ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return NULL; 148dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 149dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 150dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 151dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Unregister the fake fd and free the memory it pointed to. 152dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 1532ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzynstatic void deleteFakeFd(int fd) { 1542ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn LogState* ls; 155dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 1562ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn lock(); 157dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 1582ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn ls = fdToLogState(fd); 1592ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (ls != NULL) { 1602ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn memset(&openLogTable[fd - FAKE_FD_BASE], 0, sizeof(openLogTable[0])); 1612ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 162dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 1632ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn unlock(); 164dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 165dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 166dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 167dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Configure logging based on ANDROID_LOG_TAGS environment variable. We 168dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * need to parse a string that looks like 169dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 170dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * *:v jdwp:d dalvikvm:d dalvikvm-gc:i dalvikvmi:i 171dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 172dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * The tag (or '*' for the global level) comes first, followed by a colon 173dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * and a letter indicating the minimum priority level we're expected to log. 174dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * This can be used to reveal or conceal logs with specific tags. 175dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 176dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * We also want to check ANDROID_PRINTF_LOG to determine how the output 177dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * will look. 178dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 1792ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzynstatic void configureInitialState(const char* pathName, LogState* logState) { 1802ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn static const int kDevLogLen = sizeof("/dev/log/") - 1; 1812ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 1822ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn strncpy(logState->debugName, pathName, sizeof(logState->debugName)); 1832ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn logState->debugName[sizeof(logState->debugName) - 1] = '\0'; 1842ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 1852ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* identify binary logs */ 1862ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (!strcmp(pathName + kDevLogLen, "events") || 1872ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn !strcmp(pathName + kDevLogLen, "security")) { 1882ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn logState->isBinary = 1; 1892ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 1902ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 1912ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* global min priority defaults to "info" level */ 1922ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn logState->globalMinPriority = ANDROID_LOG_INFO; 1932ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 1942ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* 1952ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * This is based on the the long-dead utils/Log.cpp code. 1962ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn */ 1972ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn const char* tags = getenv("ANDROID_LOG_TAGS"); 1982ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn TRACE("Found ANDROID_LOG_TAGS='%s'\n", tags); 1992ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (tags != NULL) { 2002ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int entry = 0; 2012ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 2022ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn while (*tags != '\0') { 2032ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn char tagName[kMaxTagLen]; 2042ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int i, minPrio; 2052ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 2062ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn while (isspace(*tags)) tags++; 2072ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 2082ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn i = 0; 2092ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn while (*tags != '\0' && !isspace(*tags) && *tags != ':' && 2102ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn i < kMaxTagLen) { 2112ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn tagName[i++] = *tags++; 2122ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 2132ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (i == kMaxTagLen) { 2142ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn TRACE("ERROR: env tag too long (%d chars max)\n", kMaxTagLen - 1); 2152ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return; 2162ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 2172ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn tagName[i] = '\0'; 2182ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 2192ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* default priority, if there's no ":" part; also zero out '*' */ 2202ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn minPrio = ANDROID_LOG_VERBOSE; 2212ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (tagName[0] == '*' && tagName[1] == '\0') { 2222ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn minPrio = ANDROID_LOG_DEBUG; 2232ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn tagName[0] = '\0'; 2242ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 2252ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 2262ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (*tags == ':') { 2272ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn tags++; 2282ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (*tags >= '0' && *tags <= '9') { 2292ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (*tags >= ('0' + ANDROID_LOG_SILENT)) 230dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project minPrio = ANDROID_LOG_VERBOSE; 2312ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn else 2322ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn minPrio = *tags - '\0'; 2332ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } else { 2342ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn switch (*tags) { 2352ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn case 'v': 2362ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn minPrio = ANDROID_LOG_VERBOSE; 2372ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 2382ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn case 'd': 2392ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn minPrio = ANDROID_LOG_DEBUG; 2402ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 2412ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn case 'i': 2422ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn minPrio = ANDROID_LOG_INFO; 2432ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 2442ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn case 'w': 2452ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn minPrio = ANDROID_LOG_WARN; 2462ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 2472ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn case 'e': 2482ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn minPrio = ANDROID_LOG_ERROR; 2492ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 2502ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn case 'f': 2512ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn minPrio = ANDROID_LOG_FATAL; 2522ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 2532ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn case 's': 2542ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn minPrio = ANDROID_LOG_SILENT; 2552ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 2562ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn default: 2572ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn minPrio = ANDROID_LOG_DEFAULT; 2582ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 2592ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 260dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 261dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 2622ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn tags++; 2632ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (*tags != '\0' && !isspace(*tags)) { 2642ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn TRACE("ERROR: garbage in tag env; expected whitespace\n"); 2652ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn TRACE(" env='%s'\n", tags); 2662ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return; 2672ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 2682ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 2692ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 2702ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (tagName[0] == 0) { 2712ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn logState->globalMinPriority = minPrio; 2722ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn TRACE("+++ global min prio %d\n", logState->globalMinPriority); 2732ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } else { 2742ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn logState->tagSet[entry].minPriority = minPrio; 2752ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn strcpy(logState->tagSet[entry].tag, tagName); 2762ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn TRACE("+++ entry %d: %s:%d\n", entry, logState->tagSet[entry].tag, 2772ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn logState->tagSet[entry].minPriority); 2782ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn entry++; 2792ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 280dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 2812ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 2822ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 2832ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* 2842ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * Taken from the long-dead utils/Log.cpp 2852ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn */ 2862ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn const char* fstr = getenv("ANDROID_PRINTF_LOG"); 2872ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn LogFormat format; 2882ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (fstr == NULL) { 2892ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn format = FORMAT_BRIEF; 2902ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } else { 2912ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (strcmp(fstr, "brief") == 0) 2922ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn format = FORMAT_BRIEF; 2932ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn else if (strcmp(fstr, "process") == 0) 2942ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn format = FORMAT_PROCESS; 2952ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn else if (strcmp(fstr, "tag") == 0) 2962ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn format = FORMAT_PROCESS; 2972ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn else if (strcmp(fstr, "thread") == 0) 2982ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn format = FORMAT_PROCESS; 2992ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn else if (strcmp(fstr, "raw") == 0) 3002ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn format = FORMAT_PROCESS; 3012ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn else if (strcmp(fstr, "time") == 0) 3022ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn format = FORMAT_PROCESS; 3032ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn else if (strcmp(fstr, "long") == 0) 3042ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn format = FORMAT_PROCESS; 3052ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn else 3062ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn format = (LogFormat)atoi(fstr); // really?! 3072ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 3082ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 3092ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn logState->outputFormat = format; 310dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 311dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 312dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 313dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Return a human-readable string for the priority level. Always returns 314dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * a valid string. 315dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 3162ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzynstatic const char* getPriorityString(int priority) { 3172ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* the first character of each string should be unique */ 3182ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn static const char* priorityStrings[] = { "Verbose", "Debug", "Info", 3192ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn "Warn", "Error", "Assert" }; 3202ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int idx; 3212ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 3222ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn idx = (int)priority - (int)ANDROID_LOG_VERBOSE; 3232ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (idx < 0 || 3242ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn idx >= (int)(sizeof(priorityStrings) / sizeof(priorityStrings[0]))) 3252ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return "?unknown?"; 3262ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return priorityStrings[idx]; 327dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 328dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 3292a5fecb3cd0b44432836619d77837b1aca299e89Elliott Hughes#if defined(_WIN32) 330dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 3312a5fecb3cd0b44432836619d77837b1aca299e89Elliott Hughes * WIN32 does not have writev(). 332dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Make up something to replace it. 333dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 3342ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzynstatic ssize_t fake_writev(int fd, const struct iovec* iov, int iovcnt) { 3352ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn ssize_t result = 0; 3362ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn const struct iovec* end = iov + iovcnt; 3372ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn for (; iov < end; iov++) { 3382ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn ssize_t w = write(fd, iov->iov_base, iov->iov_len); 3392ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (w != (ssize_t)iov->iov_len) { 3402ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (w < 0) return w; 3412ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return result + w; 342dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 3432ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn result += w; 3442ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 3452ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return result; 346dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 347dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 348dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define writev fake_writev 349dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 350dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 351dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 352dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Write a filtered log message to stderr. 353dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 354dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Log format parsing taken from the long-dead utils/Log.cpp. 355dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 3562ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzynstatic void showLog(LogState* state, int logPrio, const char* tag, 3572ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn const char* msg) { 3588a98535bcb48dfd4bfe3dfddddc82925a2f1502bYabin Cui#if !defined(_WIN32) 3592ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn struct tm tmBuf; 360dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 3612ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn struct tm* ptm; 3622ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn char timeBuf[32]; 3632ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn char prefixBuf[128], suffixBuf[128]; 3642ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn char priChar; 3652ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn time_t when; 3669dddd137c72a989b414c1bc8e928fb67ee46fac3Dan Willemsen#if !defined(_WIN32) 3672ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn pid_t pid, tid; 3689dddd137c72a989b414c1bc8e928fb67ee46fac3Dan Willemsen#else 3692ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn uint32_t pid, tid; 3709dddd137c72a989b414c1bc8e928fb67ee46fac3Dan Willemsen#endif 371dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 3722ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn TRACE("LOG %d: %s %s", logPrio, tag, msg); 3732ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 3742ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn priChar = getPriorityString(logPrio)[0]; 3752ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn when = time(NULL); 3762ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn pid = tid = getpid(); // find gettid()? 3772ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 3782ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn/* 3792ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * Get the current date/time in pretty form 3802ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * 3812ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * It's often useful when examining a log with "less" to jump to 3822ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * a specific point in the file by searching for the date/time stamp. 3832ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * For this reason it's very annoying to have regexp meta characters 3842ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * in the time stamp. Don't use forward slashes, parenthesis, 3852ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * brackets, asterisks, or other special chars here. 3862ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn */ 3878a98535bcb48dfd4bfe3dfddddc82925a2f1502bYabin Cui#if !defined(_WIN32) 3882ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn ptm = localtime_r(&when, &tmBuf); 389dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#else 3902ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn ptm = localtime(&when); 391dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 3922ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn // strftime(timeBuf, sizeof(timeBuf), "%Y-%m-%d %H:%M:%S", ptm); 3932ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn strftime(timeBuf, sizeof(timeBuf), "%m-%d %H:%M:%S", ptm); 394dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 3952ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* 3962ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * Construct a buffer containing the log header and log message. 3972ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn */ 3982ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn size_t prefixLen, suffixLen; 399dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 4002ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn switch (state->outputFormat) { 401dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case FORMAT_TAG: 4022ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn prefixLen = 4032ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn snprintf(prefixBuf, sizeof(prefixBuf), "%c/%-8s: ", priChar, tag); 4042ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn strcpy(suffixBuf, "\n"); 4052ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn suffixLen = 1; 4062ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 407dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case FORMAT_PROCESS: 4082ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn prefixLen = 4092ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn snprintf(prefixBuf, sizeof(prefixBuf), "%c(%5d) ", priChar, pid); 4102ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn suffixLen = snprintf(suffixBuf, sizeof(suffixBuf), " (%s)\n", tag); 4112ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 412dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case FORMAT_THREAD: 4132ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), "%c(%5d:%5d) ", 4142ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn priChar, pid, tid); 4152ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn strcpy(suffixBuf, "\n"); 4162ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn suffixLen = 1; 4172ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 418dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case FORMAT_RAW: 4192ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn prefixBuf[0] = 0; 4202ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn prefixLen = 0; 4212ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn strcpy(suffixBuf, "\n"); 4222ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn suffixLen = 1; 4232ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 424dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case FORMAT_TIME: 4252ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn prefixLen = 4262ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn snprintf(prefixBuf, sizeof(prefixBuf), "%s %-8s\n\t", timeBuf, tag); 4272ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn strcpy(suffixBuf, "\n"); 4282ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn suffixLen = 1; 4292ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 430dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case FORMAT_THREADTIME: 4312ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn prefixLen = 4322ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn snprintf(prefixBuf, sizeof(prefixBuf), "%s %5d %5d %c %-8s \n\t", 4332ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn timeBuf, pid, tid, priChar, tag); 4342ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn strcpy(suffixBuf, "\n"); 4352ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn suffixLen = 1; 4362ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 437dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case FORMAT_LONG: 4382ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn prefixLen = 4392ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn snprintf(prefixBuf, sizeof(prefixBuf), "[ %s %5d:%5d %c/%-8s ]\n", 4402ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn timeBuf, pid, tid, priChar, tag); 4412ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn strcpy(suffixBuf, "\n\n"); 4422ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn suffixLen = 2; 4432ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 444dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project default: 4452ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), 4462ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn "%c/%-8s(%5d): ", priChar, tag, pid); 4472ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn strcpy(suffixBuf, "\n"); 4482ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn suffixLen = 1; 4492ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 4502ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 4512ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 4522ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* 4532ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * Figure out how many lines there will be. 4542ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn */ 4552ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn const char* end = msg + strlen(msg); 4562ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn size_t numLines = 0; 4572ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn const char* p = msg; 4582ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn while (p < end) { 4592ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (*p++ == '\n') numLines++; 4602ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 4612ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (p > msg && *(p - 1) != '\n') { 4622ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn numLines++; 4632ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 4642ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 4652ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* 4662ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * Create an array of iovecs large enough to write all of 4672ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * the lines with a prefix and a suffix. 4682ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn */ 4692ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn const size_t INLINE_VECS = 64; 4702ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn const size_t MAX_LINES = ((size_t)~0) / (3 * sizeof(struct iovec*)); 4712ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn struct iovec stackVec[INLINE_VECS]; 4722ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn struct iovec* vec = stackVec; 4732ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn size_t numVecs; 4742ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 4752ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (numLines > MAX_LINES) numLines = MAX_LINES; 4762ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 4772ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn numVecs = numLines * 3; // 3 iovecs per line. 4782ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (numVecs > INLINE_VECS) { 4792ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn vec = (struct iovec*)malloc(sizeof(struct iovec) * numVecs); 4802ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (vec == NULL) { 4812ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn msg = "LOG: write failed, no memory"; 4822ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn numVecs = INLINE_VECS; 4832ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn numLines = numVecs / 3; 4842ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn vec = stackVec; 485dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 4862ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 4872ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 4882ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* 4892ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * Fill in the iovec pointers. 4902ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn */ 4912ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn p = msg; 4922ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn struct iovec* v = vec; 4932ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int totalLen = 0; 4942ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn while (numLines > 0 && p < end) { 4952ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (prefixLen > 0) { 4962ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn v->iov_base = prefixBuf; 4972ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn v->iov_len = prefixLen; 4982ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn totalLen += prefixLen; 4992ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn v++; 5008edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn } 5012ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn const char* start = p; 5022ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn while (p < end && *p != '\n') { 5032ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn p++; 504dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 5052ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if ((p - start) > 0) { 5062ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn v->iov_base = (void*)start; 5072ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn v->iov_len = p - start; 5082ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn totalLen += p - start; 5092ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn v++; 510dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 5112ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (*p == '\n') p++; 5122ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (suffixLen > 0) { 5132ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn v->iov_base = suffixBuf; 5142ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn v->iov_len = suffixLen; 5152ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn totalLen += suffixLen; 5162ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn v++; 517dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 5182ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn numLines -= 1; 5192ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 5202ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 5212ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* 5222ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * Write the entire message to the log file with a single writev() call. 5232ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * We need to use this rather than a collection of printf()s on a FILE* 5242ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * because of multi-threading and multi-process issues. 5252ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * 5262ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * If the file was not opened with O_APPEND, this will produce interleaved 5272ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * output when called on the same file from multiple processes. 5282ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * 5292ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * If the file descriptor is actually a network socket, the writev() 5302ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * call may return with a partial write. Putting the writev() call in 5312ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * a loop can result in interleaved data. This can be alleviated 5322ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * somewhat by wrapping the writev call in the Mutex. 5332ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn */ 5342ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 5352ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn for (;;) { 5362ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int cc = writev(fileno(stderr), vec, v - vec); 5372ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 5382ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (cc == totalLen) break; 5392ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 5402ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (cc < 0) { 5412ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (errno == EINTR) continue; 5422ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 5432ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* can't really log the failure; for now, throw out a stderr */ 5442ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn fprintf(stderr, "+++ LOG: write failed (errno=%d)\n", errno); 5452ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 5462ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } else { 5472ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* shouldn't happen when writing to file or tty */ 5482ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn fprintf(stderr, "+++ LOG: write partial (%d of %d)\n", cc, totalLen); 5492ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 5502ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 5512ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 552dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 5532ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* if we allocated storage for the iovecs, free it */ 5542ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (vec != stackVec) free(vec); 555dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 556dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 557dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 558dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Receive a log message. We happen to know that "vector" has three parts: 559dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 560dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * priority (1 byte) 561dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * tag (N bytes -- null-terminated ASCII string) 562dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * message (N bytes -- null-terminated ASCII string) 563dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 5642ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzynstatic ssize_t logWritev(int fd, const struct iovec* vector, int count) { 5652ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn LogState* state; 5662ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 5672ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* Make sure that no-one frees the LogState while we're using it. 5682ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * Also guarantees that only one thread is in showLog() at a given 5692ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * time (if it matters). 5702ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn */ 5712ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn lock(); 5722ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 5732ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn state = fdToLogState(fd); 5742ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (state == NULL) { 5752ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn errno = EBADF; 5762ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn goto error; 5772ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 5782ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 5792ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (state->isBinary) { 5802ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn TRACE("%s: ignoring binary log\n", state->debugName); 5812ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn goto bail; 5822ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 5832ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 5842ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (count != 3) { 5852ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn TRACE("%s: writevLog with count=%d not expected\n", state->debugName, count); 5862ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn goto error; 5872ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 5882ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 5892ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* pull out the three fields */ 5902ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int logPrio = *(const char*)vector[0].iov_base; 5912ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn const char* tag = (const char*)vector[1].iov_base; 5922ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn const char* msg = (const char*)vector[2].iov_base; 5932ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 5942ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* see if this log tag is configured */ 5952ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int i; 5962ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int minPrio = state->globalMinPriority; 5972ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn for (i = 0; i < kTagSetSize; i++) { 5982ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (state->tagSet[i].minPriority == ANDROID_LOG_UNKNOWN) 5992ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; /* reached end of configured values */ 6002ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 6012ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (strcmp(state->tagSet[i].tag, tag) == 0) { 6022ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn // TRACE("MATCH tag '%s'\n", tag); 6032ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn minPrio = state->tagSet[i].minPriority; 6042ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn break; 605dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 6062ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 607dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 6082ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (logPrio >= minPrio) { 6092ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn showLog(state, logPrio, tag, msg); 6102ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } else { 6112ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn // TRACE("+++ NOLOG(%d): %s %s", logPrio, tag, msg); 6122ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 613dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 614dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectbail: 6152ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn unlock(); 6162ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int len = 0; 6172ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn for (i = 0; i < count; ++i) { 6182ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn len += vector[i].iov_len; 6192ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 6202ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return len; 62162d0d2d683f5d19cf9d451548bd03c4b4f53c42eMark Salyzyn 622dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projecterror: 6232ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn unlock(); 6242ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return -1; 625dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 626dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 627dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 628dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Free up our state and close the fake descriptor. 629dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 6302ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzynstatic int logClose(int fd) { 6312ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn deleteFakeFd(fd); 6322ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return 0; 633dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 634dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 635dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 636dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Open a log output device and return a fake fd. 637dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 6382ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzynstatic int logOpen(const char* pathName, int flags __unused) { 6392ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn LogState* logState; 6402ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int fd = -1; 641dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 6422ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn lock(); 643dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 6442ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn logState = createLogState(); 6452ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (logState != NULL) { 6462ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn configureInitialState(pathName, logState); 6472ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn fd = logState->fakeFd; 6482ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } else { 6492ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn errno = ENFILE; 6502ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 6512ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 6522ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn unlock(); 653dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 6542ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return fd; 6552ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn} 656dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 657dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 658dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Runtime redirection. If this binary is running in the simulator, 659dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * just pass log messages to the emulated device. If it's running 660dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * outside of the simulator, write the log messages to stderr. 661dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 662dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 6632ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzynstatic int (*redirectOpen)(const char* pathName, int flags) = NULL; 664dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int (*redirectClose)(int fd) = NULL; 6652ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzynstatic ssize_t (*redirectWritev)(int fd, const struct iovec* vector, 6662ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int count) = NULL; 6672ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 6682ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzynstatic void setRedirects() { 6692ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn const char* ws; 6702ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn 6712ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* Wrapsim sets this environment variable on children that it's 6722ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn * created using its LD_PRELOAD wrapper. 6732ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn */ 6742ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn ws = getenv("ANDROID_WRAPSIM"); 6752ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (ws != NULL && strcmp(ws, "1") == 0) { 6762ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* We're running inside wrapsim, so we can just write to the device. */ 6772ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn redirectOpen = (int (*)(const char* pathName, int flags))open; 6782ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn redirectClose = close; 6792ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn redirectWritev = writev; 6802ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } else { 6812ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* There's no device to delegate to; handle the logging ourselves. */ 6822ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn redirectOpen = logOpen; 6832ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn redirectClose = logClose; 6842ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn redirectWritev = logWritev; 6852ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 686dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 687dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 6882ed51d708eda64516ec79ac6397f690de38f0075Mark SalyzynLIBLOG_HIDDEN int fakeLogOpen(const char* pathName, int flags) { 6892ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn if (redirectOpen == NULL) { 6902ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn setRedirects(); 6912ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn } 6922ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return redirectOpen(pathName, flags); 693dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 694dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 695029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn/* 696029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * The logger API has no means or need to 'stop' or 'close' using the logs, 697029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * and as such, there is no way for that 'stop' or 'close' to translate into 698029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * a close operation to the fake log handler. fakeLogClose is provided for 699029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * completeness only. 700029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * 701029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * We have no intention of adding a log close operation as it would complicate 702029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * every user of the logging API with no gain since the only valid place to 703029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * call is in the exit handler. Logging can continue in the exit handler to 704029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * help debug HOST tools ... 705029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn */ 7062ed51d708eda64516ec79ac6397f690de38f0075Mark SalyzynLIBLOG_HIDDEN int fakeLogClose(int fd) { 7072ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* Assume that open() was called first. */ 7082ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return redirectClose(fd); 709dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 710dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 7112ed51d708eda64516ec79ac6397f690de38f0075Mark SalyzynLIBLOG_HIDDEN ssize_t fakeLogWritev(int fd, const struct iovec* vector, 7122ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int count) { 7132ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn /* Assume that open() was called first. */ 7142ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return redirectWritev(fd, vector, count); 715dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 716956870518ee89b5302b8409ac78f287bf091d9edMark Salyzyn 7172ed51d708eda64516ec79ac6397f690de38f0075Mark SalyzynLIBLOG_HIDDEN ssize_t __send_log_msg(char* buf __unused, 7182ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn size_t buf_size __unused) { 7192ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return -ENODEV; 720c9e5f3716626fb8fcbde87c2f7324cc9292a0bd5Mark Salyzyn} 721c9e5f3716626fb8fcbde87c2f7324cc9292a0bd5Mark Salyzyn 7226d753faaf8694792433eb78c5c3572efd74a3d54Mark SalyzynLIBLOG_ABI_PUBLIC int __android_log_is_loggable(int prio, 7232ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn const char* tag __unused, 7242ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int def) { 7252ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int logLevel = def; 7262ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return logLevel >= 0 && prio >= logLevel; 727956870518ee89b5302b8409ac78f287bf091d9edMark Salyzyn} 728807e40ecc9786755e2f74a7a6a9b20c812588119Mark Salyzyn 729807e40ecc9786755e2f74a7a6a9b20c812588119Mark SalyzynLIBLOG_ABI_PUBLIC int __android_log_is_loggable_len(int prio, 7302ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn const char* tag __unused, 731807e40ecc9786755e2f74a7a6a9b20c812588119Mark Salyzyn size_t len __unused, 7322ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int def) { 7332ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn int logLevel = def; 7342ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return logLevel >= 0 && prio >= logLevel; 735807e40ecc9786755e2f74a7a6a9b20c812588119Mark Salyzyn} 7369ea359fce0e401cd7a95fe1ac4e1c9926e2a6eb5Mark Salyzyn 7372ed51d708eda64516ec79ac6397f690de38f0075Mark SalyzynLIBLOG_ABI_PRIVATE int __android_log_is_debuggable() { 7382ed51d708eda64516ec79ac6397f690de38f0075Mark Salyzyn return 1; 7399ea359fce0e401cd7a95fe1ac4e1c9926e2a6eb5Mark Salyzyn} 740