65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2015-01-28 Bernard first version
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*/
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#include <rtthread.h>
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#include <yfuns.h>
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#include <unistd.h>
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#ifdef RT_USING_POSIX
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#include "libc.h"
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#endif
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#define DBG_TAG "dlib.syscall_write"
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#define DBG_LVL DBG_INFO
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#include <rtdbg.h>
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#pragma module_name = "?__write"
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size_t __write(int handle, const unsigned char *buf, size_t len)
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{
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#ifdef RT_USING_POSIX
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int size;
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#endif /* RT_USING_POSIX */
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if ((handle == _LLIO_STDOUT) || (handle == _LLIO_STDERR))
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{
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#ifdef RT_USING_POSIX
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if (libc_stdio_get_console() < 0)
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{
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LOG_W("Do not invoke standard output before initializing libc");
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return 0;
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}
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return write(STDOUT_FILENO, (void*)buf, len);
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#elif defined(RT_USING_CONSOLE)
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rt_device_t console_device;
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console_device = rt_console_get_device();
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if (console_device != 0)
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{
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rt_device_write(console_device, 0, buf, len);
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}
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return len;
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#else
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return _LLIO_ERROR;
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#endif /* RT_USING_POSIX */
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}
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else if (handle == _LLIO_STDIN)
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{
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return _LLIO_ERROR;
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}
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#ifdef RT_USING_POSIX
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size = write(handle, buf, len);
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return size;
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#else
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return _LLIO_ERROR;
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#endif /* RT_USING_POSIX */
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}
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