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