166 lines
3.9 KiB
C
166 lines
3.9 KiB
C
/*
|
|
* File : log_file.c
|
|
* This file is part of RT-Thread RTOS
|
|
* COPYRIGHT (C) 2013, RT-Thread Development Team
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* Bernard the first version
|
|
* 2013-06-26 Grissiom refactor
|
|
*/
|
|
#include <rtthread.h>
|
|
#include <log_trace.h>
|
|
|
|
#ifdef RT_USING_DFS
|
|
|
|
#include <dfs_posix.h>
|
|
|
|
struct file_device
|
|
{
|
|
struct rt_device parent;
|
|
|
|
int fd;
|
|
char *filename;
|
|
};
|
|
|
|
/* file device for log trace */
|
|
static struct file_device _file_device;
|
|
|
|
/* common device interface */
|
|
static rt_err_t fdevice_open(rt_device_t dev, rt_uint16_t oflag)
|
|
{
|
|
int fd;
|
|
struct file_device *fdev = (struct file_device *)dev;
|
|
|
|
if (fdev->fd >= 0)
|
|
return -RT_EBUSY;
|
|
|
|
/* test and open */
|
|
fd = open(fdev->filename, O_RDONLY, 0);
|
|
if (fd >= 0)
|
|
{
|
|
close(fd);
|
|
fd = open(fdev->filename, O_WRONLY | O_APPEND, 0);
|
|
}
|
|
else
|
|
{
|
|
/* file not exists */
|
|
fd = open(fdev->filename, O_WRONLY | O_CREAT, 0);
|
|
}
|
|
fdev->fd = fd;
|
|
|
|
return RT_EOK;
|
|
}
|
|
|
|
static rt_err_t fdevice_close(rt_device_t dev)
|
|
{
|
|
rt_err_t result;
|
|
struct file_device *fdev = (struct file_device *)dev;
|
|
|
|
if (fdev->fd < 0)
|
|
return -RT_EBUSY;
|
|
|
|
result = close(fdev->fd);
|
|
if (result == 0)
|
|
{
|
|
fdev->fd = -1;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static rt_size_t fdevice_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
|
|
{
|
|
struct file_device *fdev = (struct file_device *)dev;
|
|
|
|
if (fdev->fd < 0)
|
|
return 0;
|
|
|
|
return write(fdev->fd, buffer, size);
|
|
}
|
|
|
|
static rt_err_t fdevice_control(rt_device_t dev, int cmd, void *arg)
|
|
{
|
|
struct file_device *fdev = (struct file_device *)dev;
|
|
|
|
if (fdev->fd < 0)
|
|
return 0;
|
|
|
|
switch (cmd)
|
|
{
|
|
case LOG_TRACE_CTRL_FLUSH:
|
|
if (fsync(fdev->fd) != 0)
|
|
return RT_ERROR;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return RT_EOK;
|
|
}
|
|
|
|
#ifdef RT_USING_DEVICE_OPS
|
|
const static struct rt_device_ops log_trace_ops =
|
|
{
|
|
RT_NULL,
|
|
fdevice_open,
|
|
fdevice_close,
|
|
RT_NULL,
|
|
fdevice_write,
|
|
fdevice_control
|
|
};
|
|
#endif
|
|
|
|
void log_trace_file_init(const char *filename)
|
|
{
|
|
rt_device_t device;
|
|
|
|
device = rt_device_find("logfile");
|
|
if (device == RT_NULL)
|
|
{
|
|
rt_memset(&_file_device, 0x00, sizeof(_file_device));
|
|
|
|
_file_device.parent.type = RT_Device_Class_Char;
|
|
|
|
#ifdef RT_USING_DEVICE_OPS
|
|
_file_device.parent.ops = &log_trace_ops;
|
|
#else
|
|
_file_device.parent.init = RT_NULL;
|
|
_file_device.parent.open = fdevice_open;
|
|
_file_device.parent.close = fdevice_close;
|
|
_file_device.parent.write = fdevice_write;
|
|
_file_device.parent.control = fdevice_control;
|
|
#endif
|
|
|
|
rt_device_register(&_file_device.parent, "logfile", O_RDWR);
|
|
}
|
|
|
|
_file_device.filename = rt_strdup(filename);
|
|
_file_device.fd = -1;
|
|
}
|
|
|
|
void log_trace_set_file(const char *filename)
|
|
{
|
|
log_trace_file_init(filename);
|
|
log_trace_set_device("logfile");
|
|
}
|
|
#ifdef RT_USING_FINSH
|
|
#include <finsh.h>
|
|
FINSH_FUNCTION_EXPORT_ALIAS(log_trace_set_file, log_file, set output filename of log trace);
|
|
#endif
|
|
|
|
#endif /* RT_USING_DFS */
|