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WebSVN – planix.SVN – Blame – /os/branches/feature_tlsv12/sys/src/ape/lib/ap/plan9/lseek.c – Rev 2

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#include "lib.h"
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#include <unistd.h>
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#include <errno.h>
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#include "sys9.h"
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/*
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 * BUG: errno mapping
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 */
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off_t
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lseek(int d, off_t offset, int whence)
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{
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	long long n;
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	int flags;
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	flags = _fdinfo[d].flags;
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	if(flags&(FD_BUFFERED|FD_BUFFEREDX|FD_ISTTY)) {
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		errno = ESPIPE;
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		return -1;
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	}
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	n = _SEEK(d, offset, whence);
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	if(n < 0)
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		_syserrno();
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	return n;
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}