1/* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <log/log_transport.h> 18 19#include "config_write.h" 20#include "logger.h" 21 22LIBLOG_HIDDEN struct listnode __android_log_transport_write = { 23 &__android_log_transport_write, &__android_log_transport_write 24}; 25LIBLOG_HIDDEN struct listnode __android_log_persist_write = { 26 &__android_log_persist_write, &__android_log_persist_write 27}; 28 29static void __android_log_add_transport( 30 struct listnode* list, struct android_log_transport_write* transport) { 31 size_t i; 32 33 /* Try to keep one functioning transport for each log buffer id */ 34 for (i = LOG_ID_MIN; i < LOG_ID_MAX; i++) { 35 struct android_log_transport_write* transp; 36 37 if (list_empty(list)) { 38 if (!transport->available || ((*transport->available)(i) >= 0)) { 39 list_add_tail(list, &transport->node); 40 return; 41 } 42 } else { 43 write_transport_for_each(transp, list) { 44 if (!transp->available) { 45 return; 46 } 47 if (((*transp->available)(i) < 0) && 48 (!transport->available || ((*transport->available)(i) >= 0))) { 49 list_add_tail(list, &transport->node); 50 return; 51 } 52 } 53 } 54 } 55} 56 57LIBLOG_HIDDEN void __android_log_config_write() { 58 if (__android_log_transport & LOGGER_LOCAL) { 59 extern struct android_log_transport_write localLoggerWrite; 60 61 __android_log_add_transport(&__android_log_transport_write, 62 &localLoggerWrite); 63 } 64 65 if ((__android_log_transport == LOGGER_DEFAULT) || 66 (__android_log_transport & LOGGER_LOGD)) { 67#if (FAKE_LOG_DEVICE == 0) 68 extern struct android_log_transport_write logdLoggerWrite; 69 extern struct android_log_transport_write pmsgLoggerWrite; 70 71 __android_log_add_transport(&__android_log_transport_write, 72 &logdLoggerWrite); 73 __android_log_add_transport(&__android_log_persist_write, &pmsgLoggerWrite); 74#else 75 extern struct android_log_transport_write fakeLoggerWrite; 76 77 __android_log_add_transport(&__android_log_transport_write, 78 &fakeLoggerWrite); 79#endif 80 } 81 82 if (__android_log_transport & LOGGER_STDERR) { 83 extern struct android_log_transport_write stderrLoggerWrite; 84 85 /* 86 * stderr logger should be primary if we can be the only one, or if 87 * already in the primary list. Otherwise land in the persist list. 88 * Remember we can be called here if we are already initialized. 89 */ 90 if (list_empty(&__android_log_transport_write)) { 91 __android_log_add_transport(&__android_log_transport_write, 92 &stderrLoggerWrite); 93 } else { 94 struct android_log_transport_write* transp; 95 write_transport_for_each(transp, &__android_log_transport_write) { 96 if (transp == &stderrLoggerWrite) { 97 return; 98 } 99 } 100 __android_log_add_transport(&__android_log_persist_write, 101 &stderrLoggerWrite); 102 } 103 } 104} 105 106LIBLOG_HIDDEN void __android_log_config_write_close() { 107 struct android_log_transport_write* transport; 108 struct listnode* n; 109 110 write_transport_for_each_safe(transport, n, &__android_log_transport_write) { 111 transport->logMask = 0; 112 list_remove(&transport->node); 113 } 114 write_transport_for_each_safe(transport, n, &__android_log_persist_write) { 115 transport->logMask = 0; 116 list_remove(&transport->node); 117 } 118} 119