61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/*
|
|
* Copyright (C) 2008 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 <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <fcntl.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include <cutils/klog.h>
|
|
|
|
static int klog_fd = -1;
|
|
static int klog_level = KLOG_DEFAULT_LEVEL;
|
|
|
|
void klog_set_level(int level) {
|
|
klog_level = level;
|
|
}
|
|
|
|
void klog_init(void)
|
|
{
|
|
static const char *name = "/dev/__kmsg__";
|
|
if (mknod(name, S_IFCHR | 0600, (1 << 8) | 11) == 0) {
|
|
klog_fd = open(name, O_WRONLY);
|
|
fcntl(klog_fd, F_SETFD, FD_CLOEXEC);
|
|
unlink(name);
|
|
}
|
|
}
|
|
|
|
#define LOG_BUF_MAX 512
|
|
|
|
void klog_write(int level, const char *fmt, ...)
|
|
{
|
|
char buf[LOG_BUF_MAX];
|
|
va_list ap;
|
|
|
|
if (level > klog_level) return;
|
|
if (klog_fd < 0) return;
|
|
|
|
va_start(ap, fmt);
|
|
vsnprintf(buf, LOG_BUF_MAX, fmt, ap);
|
|
buf[LOG_BUF_MAX - 1] = 0;
|
|
va_end(ap);
|
|
write(klog_fd, buf, strlen(buf));
|
|
}
|