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#include	<u.h>
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#include	<libc.h>
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int
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getppid(void)
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{
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	char b[20];
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	int f;
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	memset(b, 0, sizeof(b));
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	f = open("/dev/ppid", 0);
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	if(f >= 0) {
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		read(f, b, sizeof(b));
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		close(f);
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	}
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	return atol(b);
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}