fake_log_device.c revision 9ea359fce0e401cd7a95fe1ac4e1c9926e2a6eb5
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 28a04464adaf5b95ae953f8577632d3cf8aa2c80a3Mark Salyzyn#include <stdlib.h> 29a04464adaf5b95ae953f8577632d3cf8aa2c80a3Mark Salyzyn#include <string.h> 30a04464adaf5b95ae953f8577632d3cf8aa2c80a3Mark Salyzyn 316584d0a35ab7722bdc6590525dee29f72f0ec576Mark Salyzyn#include <android/log.h> 32dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 336d753faaf8694792433eb78c5c3572efd74a3d54Mark Salyzyn#include "fake_log_device.h" 34facf94c74a2cc44f294c4789d36d5c7281c7bc3fMark Salyzyn#include "log_portability.h" 35a04464adaf5b95ae953f8577632d3cf8aa2c80a3Mark Salyzyn 36dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define kMaxTagLen 16 /* from the long-dead utils/Log.cpp */ 37dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 38dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define kTagSetSize 16 /* arbitrary */ 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 40dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#if 0 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define TRACE(...) printf("fake_log_device: " __VA_ARGS__) 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#else 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define TRACE(...) ((void)0) 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* from the long-dead utils/Log.cpp */ 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projecttypedef enum { 48dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FORMAT_OFF = 0, 49dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FORMAT_BRIEF, 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FORMAT_PROCESS, 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FORMAT_TAG, 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FORMAT_THREAD, 53dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FORMAT_RAW, 54dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FORMAT_TIME, 55dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FORMAT_THREADTIME, 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FORMAT_LONG 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} LogFormat; 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Log driver state. 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projecttypedef struct LogState { 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* the fake fd that's seen by the user */ 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fakeFd; 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* a printable name for this fake device */ 688edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn char debugName[sizeof("/dev/log/security")]; 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* nonzero if this is a binary log */ 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int isBinary; 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* global minimum priority */ 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int globalMinPriority; 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* output format */ 77dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LogFormat outputFormat; 78dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 79dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* tags and priorities */ 80dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct { 81dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char tag[kMaxTagLen]; 82dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int minPriority; 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } tagSet[kTagSetSize]; 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} LogState; 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 874a6e5a3b641dd99b658c4c336490371a3a5ae180Yabin Cui#if !defined(_WIN32) 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Locking. Since we're emulating a device, we need to be prepared 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * to have multiple callers at the same time. This lock is used 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * to both protect the fd list and to prevent LogStates from being 92dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * freed out from under a user. 93dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 94dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic pthread_mutex_t fakeLogDeviceLock = PTHREAD_MUTEX_INITIALIZER; 95dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 96c2e7d4965f86dbe90cece6d25e91d934a698d195Mark Salyzynstatic void lock() 97dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 982d2e0a5c5eb0b0ea2fe1349da50e22228965faf9Mark Salyzyn /* 992d2e0a5c5eb0b0ea2fe1349da50e22228965faf9Mark Salyzyn * If we trigger a signal handler in the middle of locked activity and the 1002d2e0a5c5eb0b0ea2fe1349da50e22228965faf9Mark Salyzyn * signal handler logs a message, we could get into a deadlock state. 1012d2e0a5c5eb0b0ea2fe1349da50e22228965faf9Mark Salyzyn */ 102dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pthread_mutex_lock(&fakeLogDeviceLock); 103dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 104dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 105c2e7d4965f86dbe90cece6d25e91d934a698d195Mark Salyzynstatic void unlock() 106dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 107dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pthread_mutex_unlock(&fakeLogDeviceLock); 108dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 1092d2e0a5c5eb0b0ea2fe1349da50e22228965faf9Mark Salyzyn 1104a6e5a3b641dd99b658c4c336490371a3a5ae180Yabin Cui#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/* 119dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * File descriptor management. 120dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 121dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define FAKE_FD_BASE 10000 1228edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn#define MAX_OPEN_LOGS 8 1238edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzynstatic LogState openLogTable[MAX_OPEN_LOGS]; 124dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 125dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 126dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Allocate an fd and associate a new LogState with it. 127dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * The fd is available via the fakeFd field of the return value. 128dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 129dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic LogState *createLogState() 130dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 131dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project size_t i; 132dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 1338edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn for (i = 0; i < (sizeof(openLogTable) / sizeof(openLogTable[0])); i++) { 1348edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn if (openLogTable[i].fakeFd == 0) { 1358edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn openLogTable[i].fakeFd = FAKE_FD_BASE + i; 1368edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn return &openLogTable[i]; 137dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 138dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 139dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return NULL; 140dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 141dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 142dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 143dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Translate an fd to a LogState. 144dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 145dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic LogState *fdToLogState(int fd) 146dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 147dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd >= FAKE_FD_BASE && fd < FAKE_FD_BASE + MAX_OPEN_LOGS) { 1488edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn return &openLogTable[fd - FAKE_FD_BASE]; 149dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 150dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return NULL; 151dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 152dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 153dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 154dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Unregister the fake fd and free the memory it pointed to. 155dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 156dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void deleteFakeFd(int fd) 157dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 158dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LogState *ls; 159dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 160c2e7d4965f86dbe90cece6d25e91d934a698d195Mark Salyzyn lock(); 161dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 162dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ls = fdToLogState(fd); 163dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ls != NULL) { 1648edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn memset(&openLogTable[fd - FAKE_FD_BASE], 0, sizeof(openLogTable[0])); 165dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 166dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 167c2e7d4965f86dbe90cece6d25e91d934a698d195Mark Salyzyn unlock(); 168dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 169dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 170dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 171dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Configure logging based on ANDROID_LOG_TAGS environment variable. We 172dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * need to parse a string that looks like 173dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 174dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * *:v jdwp:d dalvikvm:d dalvikvm-gc:i dalvikvmi:i 175dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 176dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * The tag (or '*' for the global level) comes first, followed by a colon 177dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * and a letter indicating the minimum priority level we're expected to log. 178dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * This can be used to reveal or conceal logs with specific tags. 179dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 180dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * We also want to check ANDROID_PRINTF_LOG to determine how the output 181dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * will look. 182dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 183dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void configureInitialState(const char* pathName, LogState* logState) 184dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 185dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project static const int kDevLogLen = sizeof("/dev/log/") - 1; 186dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 1878edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn strncpy(logState->debugName, pathName, sizeof(logState->debugName)); 1888edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn logState->debugName[sizeof(logState->debugName) - 1] = '\0'; 189dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 190dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* identify binary logs */ 1918edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn if (!strcmp(pathName + kDevLogLen, "events") || 1928edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn !strcmp(pathName + kDevLogLen, "security")) { 193dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project logState->isBinary = 1; 194dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 195dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 196dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* global min priority defaults to "info" level */ 197dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project logState->globalMinPriority = ANDROID_LOG_INFO; 198dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 199dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 200dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * This is based on the the long-dead utils/Log.cpp code. 201dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 202dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char* tags = getenv("ANDROID_LOG_TAGS"); 203dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project TRACE("Found ANDROID_LOG_TAGS='%s'\n", tags); 204dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (tags != NULL) { 205dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int entry = 0; 206dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 207dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while (*tags != '\0') { 208dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char tagName[kMaxTagLen]; 209dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int i, minPrio; 210dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 211dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while (isspace(*tags)) 212dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tags++; 213dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 214dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project i = 0; 215dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while (*tags != '\0' && !isspace(*tags) && *tags != ':' && 2168edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn i < kMaxTagLen) { 217dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tagName[i++] = *tags++; 218dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 219dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (i == kMaxTagLen) { 220dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project TRACE("ERROR: env tag too long (%d chars max)\n", kMaxTagLen-1); 221dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return; 222dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 223dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tagName[i] = '\0'; 224dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 225dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* default priority, if there's no ":" part; also zero out '*' */ 226dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project minPrio = ANDROID_LOG_VERBOSE; 227dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (tagName[0] == '*' && tagName[1] == '\0') { 228dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project minPrio = ANDROID_LOG_DEBUG; 229dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tagName[0] = '\0'; 230dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 231dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 232dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (*tags == ':') { 233dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tags++; 234dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (*tags >= '0' && *tags <= '9') { 235dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (*tags >= ('0' + ANDROID_LOG_SILENT)) 236dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project minPrio = ANDROID_LOG_VERBOSE; 237dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else 238dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project minPrio = *tags - '\0'; 239dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 240dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project switch (*tags) { 241dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case 'v': minPrio = ANDROID_LOG_VERBOSE; break; 242dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case 'd': minPrio = ANDROID_LOG_DEBUG; break; 243dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case 'i': minPrio = ANDROID_LOG_INFO; break; 244dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case 'w': minPrio = ANDROID_LOG_WARN; break; 245dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case 'e': minPrio = ANDROID_LOG_ERROR; break; 246dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case 'f': minPrio = ANDROID_LOG_FATAL; break; 247dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case 's': minPrio = ANDROID_LOG_SILENT; break; 248dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project default: minPrio = ANDROID_LOG_DEFAULT; break; 249dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 250dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 251dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 252dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tags++; 253dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (*tags != '\0' && !isspace(*tags)) { 254dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project TRACE("ERROR: garbage in tag env; expected whitespace\n"); 255dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project TRACE(" env='%s'\n", tags); 256dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return; 257dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 258dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 259dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 260dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (tagName[0] == 0) { 261dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project logState->globalMinPriority = minPrio; 262dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project TRACE("+++ global min prio %d\n", logState->globalMinPriority); 263dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 264dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project logState->tagSet[entry].minPriority = minPrio; 265dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strcpy(logState->tagSet[entry].tag, tagName); 266dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project TRACE("+++ entry %d: %s:%d\n", 267dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project entry, 268dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project logState->tagSet[entry].tag, 269dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project logState->tagSet[entry].minPriority); 270dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project entry++; 271dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 272dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 273dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 274dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 275dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 276dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 277dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Taken from the long-dead utils/Log.cpp 278dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 279dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char* fstr = getenv("ANDROID_PRINTF_LOG"); 280dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LogFormat format; 281dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fstr == NULL) { 282dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project format = FORMAT_BRIEF; 283dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 284dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (strcmp(fstr, "brief") == 0) 285dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project format = FORMAT_BRIEF; 286dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else if (strcmp(fstr, "process") == 0) 287dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project format = FORMAT_PROCESS; 288dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else if (strcmp(fstr, "tag") == 0) 289dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project format = FORMAT_PROCESS; 290dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else if (strcmp(fstr, "thread") == 0) 291dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project format = FORMAT_PROCESS; 292dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else if (strcmp(fstr, "raw") == 0) 293dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project format = FORMAT_PROCESS; 294dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else if (strcmp(fstr, "time") == 0) 295dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project format = FORMAT_PROCESS; 296dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else if (strcmp(fstr, "long") == 0) 297dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project format = FORMAT_PROCESS; 298dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project else 299dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project format = (LogFormat) atoi(fstr); // really?! 300dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 301dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 302dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project logState->outputFormat = format; 303dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 304dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 305dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 306dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Return a human-readable string for the priority level. Always returns 307dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * a valid string. 308dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 309dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic const char* getPriorityString(int priority) 310dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 311dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* the first character of each string should be unique */ 312dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project static const char* priorityStrings[] = { 313dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "Verbose", "Debug", "Info", "Warn", "Error", "Assert" 314dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project }; 315dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int idx; 316dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 3178edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn idx = (int)priority - (int)ANDROID_LOG_VERBOSE; 318dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (idx < 0 || 3198edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn idx >= (int)(sizeof(priorityStrings) / sizeof(priorityStrings[0]))) 320dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return "?unknown?"; 321dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return priorityStrings[idx]; 322dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 323dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 3242a5fecb3cd0b44432836619d77837b1aca299e89Elliott Hughes#if defined(_WIN32) 325dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 3262a5fecb3cd0b44432836619d77837b1aca299e89Elliott Hughes * WIN32 does not have writev(). 327dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Make up something to replace it. 328dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 329dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic ssize_t fake_writev(int fd, const struct iovec *iov, int iovcnt) { 330168021c2827312e17a13d77b54f7d030a08b257bMark Salyzyn ssize_t result = 0; 331168021c2827312e17a13d77b54f7d030a08b257bMark Salyzyn const struct iovec* end = iov + iovcnt; 332dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (; iov < end; iov++) { 333168021c2827312e17a13d77b54f7d030a08b257bMark Salyzyn ssize_t w = write(fd, iov->iov_base, iov->iov_len); 334168021c2827312e17a13d77b54f7d030a08b257bMark Salyzyn if (w != (ssize_t) iov->iov_len) { 335dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (w < 0) 336dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return w; 337dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return result + w; 338dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 339dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project result += w; 340dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 341dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return result; 342dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 343dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 344dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define writev fake_writev 345dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 346dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 347dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 348dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 349dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Write a filtered log message to stderr. 350dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 351dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Log format parsing taken from the long-dead utils/Log.cpp. 352dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 353dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void showLog(LogState *state, 354dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int logPrio, const char* tag, const char* msg) 355dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 3568a98535bcb48dfd4bfe3dfddddc82925a2f1502bYabin Cui#if !defined(_WIN32) 357dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct tm tmBuf; 358dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 359dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct tm* ptm; 360dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char timeBuf[32]; 361dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char prefixBuf[128], suffixBuf[128]; 362dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char priChar; 363dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project time_t when; 3649dddd137c72a989b414c1bc8e928fb67ee46fac3Dan Willemsen#if !defined(_WIN32) 365dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pid_t pid, tid; 3669dddd137c72a989b414c1bc8e928fb67ee46fac3Dan Willemsen#else 3679dddd137c72a989b414c1bc8e928fb67ee46fac3Dan Willemsen uint32_t pid, tid; 3689dddd137c72a989b414c1bc8e928fb67ee46fac3Dan Willemsen#endif 369dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 370dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project TRACE("LOG %d: %s %s", logPrio, tag, msg); 371dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 372dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project priChar = getPriorityString(logPrio)[0]; 373dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project when = time(NULL); 374dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pid = tid = getpid(); // find gettid()? 375dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 376dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 377dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Get the current date/time in pretty form 378dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 379dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * It's often useful when examining a log with "less" to jump to 380dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * a specific point in the file by searching for the date/time stamp. 381dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * For this reason it's very annoying to have regexp meta characters 382dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * in the time stamp. Don't use forward slashes, parenthesis, 383dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * brackets, asterisks, or other special chars here. 384dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 3858a98535bcb48dfd4bfe3dfddddc82925a2f1502bYabin Cui#if !defined(_WIN32) 386dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ptm = localtime_r(&when, &tmBuf); 387dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#else 388dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ptm = localtime(&when); 389dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 390dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project //strftime(timeBuf, sizeof(timeBuf), "%Y-%m-%d %H:%M:%S", ptm); 391dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strftime(timeBuf, sizeof(timeBuf), "%m-%d %H:%M:%S", ptm); 392dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 393dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 394dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Construct a buffer containing the log header and log message. 395dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 396dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project size_t prefixLen, suffixLen; 397dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 398dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project switch (state->outputFormat) { 399dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case FORMAT_TAG: 400dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), 401dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "%c/%-8s: ", priChar, tag); 402dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strcpy(suffixBuf, "\n"); suffixLen = 1; 403dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 404dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case FORMAT_PROCESS: 405dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), 406dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "%c(%5d) ", priChar, pid); 407dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project suffixLen = snprintf(suffixBuf, sizeof(suffixBuf), 408dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project " (%s)\n", tag); 409dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 410dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case FORMAT_THREAD: 411dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), 412d2c8f52189f8c2a13b88a107c6495f9d83196d2dAndrew Hsieh "%c(%5d:%5d) ", priChar, pid, tid); 413dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strcpy(suffixBuf, "\n"); suffixLen = 1; 414dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 415dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case FORMAT_RAW: 416dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prefixBuf[0] = 0; prefixLen = 0; 417dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strcpy(suffixBuf, "\n"); suffixLen = 1; 418dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 419dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case FORMAT_TIME: 420dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), 421dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "%s %-8s\n\t", timeBuf, tag); 422dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strcpy(suffixBuf, "\n"); suffixLen = 1; 423dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 424dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case FORMAT_THREADTIME: 425dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), 426dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "%s %5d %5d %c %-8s \n\t", timeBuf, pid, tid, priChar, tag); 427dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strcpy(suffixBuf, "\n"); suffixLen = 1; 428dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 429dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case FORMAT_LONG: 430dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), 431d2c8f52189f8c2a13b88a107c6495f9d83196d2dAndrew Hsieh "[ %s %5d:%5d %c/%-8s ]\n", 432d2c8f52189f8c2a13b88a107c6495f9d83196d2dAndrew Hsieh timeBuf, pid, tid, priChar, tag); 433dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strcpy(suffixBuf, "\n\n"); suffixLen = 2; 434dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 435dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project default: 436dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prefixLen = snprintf(prefixBuf, sizeof(prefixBuf), 437dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project "%c/%-8s(%5d): ", priChar, tag, pid); 438dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strcpy(suffixBuf, "\n"); suffixLen = 1; 439dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 440dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 441dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 442dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 443dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Figure out how many lines there will be. 444dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 445dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char* end = msg + strlen(msg); 446dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project size_t numLines = 0; 447dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char* p = msg; 448dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while (p < end) { 449dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (*p++ == '\n') numLines++; 450dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 4518edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn if (p > msg && *(p-1) != '\n') { 4528edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn numLines++; 4538edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn } 454dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 455dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 456dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Create an array of iovecs large enough to write all of 457dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * the lines with a prefix and a suffix. 458dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 4598edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn const size_t INLINE_VECS = 64; 460dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const size_t MAX_LINES = ((size_t)~0)/(3*sizeof(struct iovec*)); 461dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct iovec stackVec[INLINE_VECS]; 462dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct iovec* vec = stackVec; 463dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project size_t numVecs; 464dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 465dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (numLines > MAX_LINES) 466dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project numLines = MAX_LINES; 467dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 468b7a0166b0093cf35b8d808f7bfb79e94222805dfMark Salyzyn numVecs = numLines * 3; // 3 iovecs per line. 469dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (numVecs > INLINE_VECS) { 4702a7f2ae7d4b25f89e36be04e47b9e7a3d76e0cfdCarl Shapiro vec = (struct iovec*)malloc(sizeof(struct iovec)*numVecs); 471dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (vec == NULL) { 472dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project msg = "LOG: write failed, no memory"; 473b7a0166b0093cf35b8d808f7bfb79e94222805dfMark Salyzyn numVecs = INLINE_VECS; 474b7a0166b0093cf35b8d808f7bfb79e94222805dfMark Salyzyn numLines = numVecs / 3; 475dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project vec = stackVec; 476dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 477dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 478dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 479dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 480dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Fill in the iovec pointers. 481dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 482dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project p = msg; 483dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct iovec* v = vec; 484dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int totalLen = 0; 485dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while (numLines > 0 && p < end) { 486dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (prefixLen > 0) { 487dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project v->iov_base = prefixBuf; 488dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project v->iov_len = prefixLen; 489dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project totalLen += prefixLen; 490dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project v++; 491dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 492dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char* start = p; 4938edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn while (p < end && *p != '\n') { 4948edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn p++; 4958edbbe1dc148006e4cd588f42f580bfdaa7ae585Mark Salyzyn } 496dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((p-start) > 0) { 497dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project v->iov_base = (void*)start; 498dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project v->iov_len = p-start; 499dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project totalLen += p-start; 500dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project v++; 501dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 502dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (*p == '\n') p++; 503dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (suffixLen > 0) { 504dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project v->iov_base = suffixBuf; 505dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project v->iov_len = suffixLen; 506dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project totalLen += suffixLen; 507dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project v++; 508dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 509dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project numLines -= 1; 510dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 5116d753faaf8694792433eb78c5c3572efd74a3d54Mark Salyzyn 512dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 513dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Write the entire message to the log file with a single writev() call. 514dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * We need to use this rather than a collection of printf()s on a FILE* 515dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * because of multi-threading and multi-process issues. 516dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 517dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * If the file was not opened with O_APPEND, this will produce interleaved 518dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * output when called on the same file from multiple processes. 519dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 520dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * If the file descriptor is actually a network socket, the writev() 521dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * call may return with a partial write. Putting the writev() call in 522dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * a loop can result in interleaved data. This can be alleviated 523dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * somewhat by wrapping the writev call in the Mutex. 524dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 525dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 526dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for(;;) { 527dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int cc = writev(fileno(stderr), vec, v-vec); 528dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 529dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (cc == totalLen) break; 5306d753faaf8694792433eb78c5c3572efd74a3d54Mark Salyzyn 531dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (cc < 0) { 532dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(errno == EINTR) continue; 5336d753faaf8694792433eb78c5c3572efd74a3d54Mark Salyzyn 534dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* can't really log the failure; for now, throw out a stderr */ 535dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fprintf(stderr, "+++ LOG: write failed (errno=%d)\n", errno); 536dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 537dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 538dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* shouldn't happen when writing to file or tty */ 539dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fprintf(stderr, "+++ LOG: write partial (%d of %d)\n", cc, totalLen); 540dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 541dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 542dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 543dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 544dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* if we allocated storage for the iovecs, free it */ 545dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (vec != stackVec) 546dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project free(vec); 547dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 548dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 549dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 550dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 551dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Receive a log message. We happen to know that "vector" has three parts: 552dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 553dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * priority (1 byte) 554dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * tag (N bytes -- null-terminated ASCII string) 555dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * message (N bytes -- null-terminated ASCII string) 556dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 557dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic ssize_t logWritev(int fd, const struct iovec* vector, int count) 558dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 559dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LogState* state; 560dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 561dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Make sure that no-one frees the LogState while we're using it. 562dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Also guarantees that only one thread is in showLog() at a given 563dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * time (if it matters). 564dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 565c2e7d4965f86dbe90cece6d25e91d934a698d195Mark Salyzyn lock(); 566dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 567dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project state = fdToLogState(fd); 568dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (state == NULL) { 569dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errno = EBADF; 570dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto error; 571dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 572dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 573dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (state->isBinary) { 574dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project TRACE("%s: ignoring binary log\n", state->debugName); 575dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto bail; 576dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 577dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 578dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (count != 3) { 579dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project TRACE("%s: writevLog with count=%d not expected\n", 580dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project state->debugName, count); 581dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto error; 582dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 583dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 584dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* pull out the three fields */ 585dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int logPrio = *(const char*)vector[0].iov_base; 586dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char* tag = (const char*) vector[1].iov_base; 587dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char* msg = (const char*) vector[2].iov_base; 588dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 589dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* see if this log tag is configured */ 590dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int i; 591dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int minPrio = state->globalMinPriority; 592dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (i = 0; i < kTagSetSize; i++) { 593dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (state->tagSet[i].minPriority == ANDROID_LOG_UNKNOWN) 594dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; /* reached end of configured values */ 595dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 596dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (strcmp(state->tagSet[i].tag, tag) == 0) { 597dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project //TRACE("MATCH tag '%s'\n", tag); 598dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project minPrio = state->tagSet[i].minPriority; 599dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 600dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 601dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 602dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 603dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (logPrio >= minPrio) { 604dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project showLog(state, logPrio, tag, msg); 605dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 606dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project //TRACE("+++ NOLOG(%d): %s %s", logPrio, tag, msg); 607dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 608dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 609dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectbail: 610c2e7d4965f86dbe90cece6d25e91d934a698d195Mark Salyzyn unlock(); 611dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return vector[0].iov_len + vector[1].iov_len + vector[2].iov_len; 612dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projecterror: 613c2e7d4965f86dbe90cece6d25e91d934a698d195Mark Salyzyn unlock(); 614dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 615dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 616dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 617dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 618dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Free up our state and close the fake descriptor. 619dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 620dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int logClose(int fd) 621dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 622dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project deleteFakeFd(fd); 623dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 624dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 625dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 626dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 627dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Open a log output device and return a fake fd. 628dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 629a04464adaf5b95ae953f8577632d3cf8aa2c80a3Mark Salyzynstatic int logOpen(const char* pathName, int flags __unused) 630dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 631dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LogState *logState; 632dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd = -1; 633dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 634c2e7d4965f86dbe90cece6d25e91d934a698d195Mark Salyzyn lock(); 635dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 636dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project logState = createLogState(); 637dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (logState != NULL) { 638dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project configureInitialState(pathName, logState); 639dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = logState->fakeFd; 640dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 641dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errno = ENFILE; 642dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 643dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 644c2e7d4965f86dbe90cece6d25e91d934a698d195Mark Salyzyn unlock(); 645dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 646dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return fd; 647dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 648dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 649dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 650dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 651dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Runtime redirection. If this binary is running in the simulator, 652dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * just pass log messages to the emulated device. If it's running 653dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * outside of the simulator, write the log messages to stderr. 654dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 655dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 656dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int (*redirectOpen)(const char *pathName, int flags) = NULL; 657dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int (*redirectClose)(int fd) = NULL; 658dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic ssize_t (*redirectWritev)(int fd, const struct iovec* vector, int count) 659dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project = NULL; 660dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 661dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void setRedirects() 662dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 663dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *ws; 664dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 665dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Wrapsim sets this environment variable on children that it's 666dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * created using its LD_PRELOAD wrapper. 667dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 668dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ws = getenv("ANDROID_WRAPSIM"); 669dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ws != NULL && strcmp(ws, "1") == 0) { 670dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* We're running inside wrapsim, so we can just write to the device. */ 671dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project redirectOpen = (int (*)(const char *pathName, int flags))open; 672dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project redirectClose = close; 673dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project redirectWritev = writev; 674dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 675dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* There's no device to delegate to; handle the logging ourselves. */ 676dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project redirectOpen = logOpen; 677dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project redirectClose = logClose; 678dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project redirectWritev = logWritev; 679dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 680dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 681dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 6826d753faaf8694792433eb78c5c3572efd74a3d54Mark SalyzynLIBLOG_HIDDEN int fakeLogOpen(const char *pathName, int flags) 683dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 684dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (redirectOpen == NULL) { 685dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project setRedirects(); 686dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 687dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return redirectOpen(pathName, flags); 688dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 689dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 690029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn/* 691029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * The logger API has no means or need to 'stop' or 'close' using the logs, 692029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * and as such, there is no way for that 'stop' or 'close' to translate into 693029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * a close operation to the fake log handler. fakeLogClose is provided for 694029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * completeness only. 695029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * 696029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * We have no intention of adding a log close operation as it would complicate 697029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * every user of the logging API with no gain since the only valid place to 698029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * call is in the exit handler. Logging can continue in the exit handler to 699029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn * help debug HOST tools ... 700029c7373801b9e1791df334efa36588c216b4ab2Mark Salyzyn */ 7016d753faaf8694792433eb78c5c3572efd74a3d54Mark SalyzynLIBLOG_HIDDEN int fakeLogClose(int fd) 702dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 703dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Assume that open() was called first. */ 704dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return redirectClose(fd); 705dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 706dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 7076d753faaf8694792433eb78c5c3572efd74a3d54Mark SalyzynLIBLOG_HIDDEN ssize_t fakeLogWritev(int fd, 7086d753faaf8694792433eb78c5c3572efd74a3d54Mark Salyzyn const struct iovec* vector, int count) 709dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 710dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Assume that open() was called first. */ 711dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return redirectWritev(fd, vector, count); 712dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 713956870518ee89b5302b8409ac78f287bf091d9edMark Salyzyn 7146d753faaf8694792433eb78c5c3572efd74a3d54Mark SalyzynLIBLOG_ABI_PUBLIC int __android_log_is_loggable(int prio, 7156d753faaf8694792433eb78c5c3572efd74a3d54Mark Salyzyn const char *tag __unused, 7166d753faaf8694792433eb78c5c3572efd74a3d54Mark Salyzyn int def) 717956870518ee89b5302b8409ac78f287bf091d9edMark Salyzyn{ 718956870518ee89b5302b8409ac78f287bf091d9edMark Salyzyn int logLevel = def; 719956870518ee89b5302b8409ac78f287bf091d9edMark Salyzyn return logLevel >= 0 && prio >= logLevel; 720956870518ee89b5302b8409ac78f287bf091d9edMark Salyzyn} 721807e40ecc9786755e2f74a7a6a9b20c812588119Mark Salyzyn 722807e40ecc9786755e2f74a7a6a9b20c812588119Mark SalyzynLIBLOG_ABI_PUBLIC int __android_log_is_loggable_len(int prio, 723807e40ecc9786755e2f74a7a6a9b20c812588119Mark Salyzyn const char *tag __unused, 724807e40ecc9786755e2f74a7a6a9b20c812588119Mark Salyzyn size_t len __unused, 725807e40ecc9786755e2f74a7a6a9b20c812588119Mark Salyzyn int def) 726807e40ecc9786755e2f74a7a6a9b20c812588119Mark Salyzyn{ 727807e40ecc9786755e2f74a7a6a9b20c812588119Mark Salyzyn int logLevel = def; 728807e40ecc9786755e2f74a7a6a9b20c812588119Mark Salyzyn return logLevel >= 0 && prio >= logLevel; 729807e40ecc9786755e2f74a7a6a9b20c812588119Mark Salyzyn} 7309ea359fce0e401cd7a95fe1ac4e1c9926e2a6eb5Mark Salyzyn 7319ea359fce0e401cd7a95fe1ac4e1c9926e2a6eb5Mark SalyzynLIBLOG_ABI_PRIVATE int __android_log_is_debuggable() 7329ea359fce0e401cd7a95fe1ac4e1c9926e2a6eb5Mark Salyzyn{ 7339ea359fce0e401cd7a95fe1ac4e1c9926e2a6eb5Mark Salyzyn return 1; 7349ea359fce0e401cd7a95fe1ac4e1c9926e2a6eb5Mark Salyzyn} 735