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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2017/10/15 bernard the first version
*/
#include <rtthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/time.h>
#include <sys/errno.h>
#include "libc.h"
#define STDIO_DEVICE_NAME_MAX 32
int sys_dup2(int oldfd, int new);
int libc_system_init(void)
{
#ifdef RT_USING_POSIX_STDIO
rt_device_t dev_console;
dev_console = rt_console_get_device();
if (dev_console)
{
int fd, ret;
char name[STDIO_DEVICE_NAME_MAX];
rt_snprintf(name, sizeof(name) - 1, "/dev/%s", dev_console->parent.name);
name[STDIO_DEVICE_NAME_MAX - 1] = '\0';
fd = open(name, O_RDWR);
if (fd >= 0)
{
/* set fd (0, 1, 2) */
ret = sys_dup2(fd, 0);
if (ret != fd)
{
close(fd);
}
sys_dup2(ret, 1);
sys_dup2(ret, 2);
ret = libc_stdio_set_console(dev_console->parent.name, O_RDWR);
if (ret < 0)
{
return -1;
}
}
else
{
return -1;
}
}
#endif /* RT_USING_POSIX_STDIO */
return 0;
}
INIT_APP_EXPORT(libc_system_init);
#if defined(RT_USING_POSIX_STDIO) && defined(RT_USING_NEWLIBC)
static FILE* std_console = NULL;
int libc_stdio_set_console(const char* device_name, int mode)
{
FILE *fp;
char name[STDIO_DEVICE_NAME_MAX];
char *file_mode;
rt_snprintf(name, sizeof(name) - 1, "/dev/%s", device_name);
name[STDIO_DEVICE_NAME_MAX - 1] = '\0';
if (mode == O_RDWR)
{
file_mode = "r+";
}
else if (mode == O_WRONLY)
{
file_mode = "wb";
}
else
{
file_mode = "rb";
}
fp = fopen(name, file_mode);
if (fp)
{
setvbuf(fp, NULL, _IONBF, 0);
if (std_console)
{
fclose(std_console);
std_console = NULL;
}
std_console = fp;
if (mode == O_RDWR)
{
_GLOBAL_REENT->_stdin = std_console;
}
else
{
_GLOBAL_REENT->_stdin = NULL;
}
if (mode == O_RDONLY)
{
_GLOBAL_REENT->_stdout = NULL;
_GLOBAL_REENT->_stderr = NULL;
}
else
{
_GLOBAL_REENT->_stdout = std_console;
_GLOBAL_REENT->_stderr = std_console;
}
_GLOBAL_REENT->__sdidinit = 1;
}
if (std_console)
return fileno(std_console);
return -1;
}
int libc_stdio_get_console(void)
{
if (std_console)
return fileno(std_console);
else
return -1;
}
#elif defined(RT_USING_POSIX_STDIO) && defined(RT_USING_MUSLLIBC)
static FILE* std_console = NULL;
int libc_stdio_set_console(const char* device_name, int mode)
{
FILE *fp;
char name[STDIO_DEVICE_NAME_MAX];
char *file_mode;
rt_snprintf(name, sizeof(name) - 1, "/dev/%s", device_name);
name[STDIO_DEVICE_NAME_MAX - 1] = '\0';
if (mode == O_RDWR) file_mode = "r+";
else if (mode == O_WRONLY) file_mode = "wb";
else file_mode = "rb";
fp = fopen(name, file_mode);
if (fp)
{
setvbuf(fp, NULL, _IONBF, 0);
if (std_console)
{
fclose(std_console);
std_console = NULL;
}
std_console = fp;
}
if (std_console)
{
int fd = fileno(std_console);
return fd;
}
return -1;
}
int libc_stdio_get_console(void)
{
int ret = -1;
if (std_console)
{
ret = fileno(std_console);
}
return ret;
}
#elif defined(RT_USING_POSIX_STDIO)
static int std_fd = -1;
int libc_stdio_set_console(const char* device_name, int mode)
{
int fd;
char name[STDIO_DEVICE_NAME_MAX];
rt_snprintf(name, sizeof(name) - 1, "/dev/%s", device_name);
name[STDIO_DEVICE_NAME_MAX - 1] = '\0';
fd = open(name, mode, 0);
if (fd >= 0)
{
if (std_fd >= 0)
{
close(std_fd);
}
std_fd = fd;
}
return std_fd;
}
int libc_stdio_get_console(void) {
return std_fd;
}
#endif /* defined(RT_USING_POSIX_STDIO) && defined(RT_USING_NEWLIBC) */
int isatty(int fd)
{
#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
if(fd == STDOUT_FILENO || fd == STDERR_FILENO)
{
return 1;
}
#endif
#ifdef RT_USING_POSIX_STDIO
if(fd == STDIN_FILENO)
{
return 1;
}
#endif
rt_set_errno(ENOTTY);
return 0;
}
RTM_EXPORT(isatty);
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