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/*
* 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 <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/socket.h>
#include <cutils/logger.h>
#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);
}
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