31 lines
721 B
C
31 lines
721 B
C
/*
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* This file is part of the UCB release of Plan 9. It is subject to the license
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* terms in the LICENSE file found in the top-level directory of this
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* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
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* part of the UCB release of Plan 9, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms contained
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* in the LICENSE file.
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*/
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#include <u.h>
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#include <lib9.h>
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#include <bio.h>
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int
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Bbuffered(Biobufhdr *bp)
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{
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switch(bp->state) {
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case Bracteof:
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case Bractive:
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return -bp->icount;
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case Bwactive:
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return bp->bsize + bp->ocount;
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case Binactive:
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return 0;
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}
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fprint(2, "Bbuffered: unknown state %d\n", bp->state);
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return 0;
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}
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