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WebSVN – planix.SVN – Blame – /os/branches/feature_tlsv12/sys/src/libbio/bflush.c – Rev 2

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#include	<u.h>
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#include	<libc.h>
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#include	<bio.h>
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int
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Bflush(Biobufhdr *bp)
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{
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	int n, c;
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	switch(bp->state) {
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	case Bwactive:
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		n = bp->bsize+bp->ocount;
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		if(n == 0)
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			return 0;
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		c = write(bp->fid, bp->bbuf, n);
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		if(n == c) {
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			bp->offset += n;
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			bp->ocount = -bp->bsize;
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			return 0;
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		}
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		bp->state = Binactive;
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		bp->ocount = 0;
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		break;
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	case Bracteof:
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		bp->state = Bractive;
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	case Bractive:
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		bp->icount = 0;
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		bp->gbuf = bp->ebuf;
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		return 0;
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	}
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	return Beof;
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}