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			40 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			40 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/* write with error checking and retries.
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   Copyright (C) 2016-2020 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   The GNU C Library is free software; you can redistribute it and/or
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   modify it under the terms of the GNU Lesser General Public
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   License as published by the Free Software Foundation; either
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   version 2.1 of the License, or (at your option) any later version.
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   The GNU C Library is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   Lesser General Public License for more details.
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   You should have received a copy of the GNU Lesser General Public
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   License along with the GNU C Library; if not, see
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   <https://www.gnu.org/licenses/>.  */
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#include <support/xunistd.h>
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#include <support/check.h>
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void
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xwrite (int fd, const void *buffer, size_t length)
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{
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  const char *p = buffer;
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  const char *end = p + length;
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  while (p < end)
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    {
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      ssize_t ret = write (fd, p, end - p);
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      if (ret < 0)
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        FAIL_EXIT1 ("write of %zu bytes failed after %td: %m",
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                    length, p - (const char *) buffer);
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      if (ret == 0)
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        FAIL_EXIT1 ("write return 0 after writing %td bytes of %zu",
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                    p - (const char *) buffer, length);
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      p += ret;
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    }
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}
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