/* * Copyright (C) 2007 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include #include #include #include #include #include #include #include #include "sysdeps.h" #include "adb.h" #define LOG_FILE_DIR "/dev/log/" void write_log_entry(int fd, struct logger_entry *buf); void log_service(int fd, void *cookie) { /* get the name of the log filepath to read */ char * log_filepath = cookie; /* open the log file. */ int logfd = unix_open(log_filepath, O_RDONLY); if (logfd < 0) { goto done; } // temp buffer to read the entries unsigned char buf[LOGGER_ENTRY_MAX_LEN + 1] __attribute__((aligned(4))); struct logger_entry *entry = (struct logger_entry *) buf; while (1) { int ret; ret = unix_read(logfd, entry, LOGGER_ENTRY_MAX_LEN); if (ret < 0) { if (errno == EINTR || errno == EAGAIN) continue; // perror("logcat read"); goto done; } else if (!ret) { // fprintf(stderr, "read: Unexpected EOF!\n"); goto done; } /* NOTE: driver guarantees we read exactly one full entry */ entry->msg[entry->len] = '\0'; write_log_entry(fd, entry); } done: unix_close(fd); free(log_filepath); } /* returns the full path to the log file in a newly allocated string */ char * get_log_file_path(const char * log_name) { char *log_device = malloc(strlen(LOG_FILE_DIR) + strlen(log_name) + 1); strcpy(log_device, LOG_FILE_DIR); strcat(log_device, log_name); return log_device; } /* prints one log entry into the file descriptor fd */ void write_log_entry(int fd, struct logger_entry *buf) { size_t size = sizeof(struct logger_entry) + buf->len; writex(fd, buf, size); }