26 lines
730 B
C
26 lines
730 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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/*
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* pANS stdio -- ftello
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*/
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#include "iolib.h"
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long long ftello(FILE *f){
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long long seekp=seek(f->fd, 0L, 1);
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if(seekp<0) return -1; /* enter error state? */
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switch(f->state){
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default:
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return seekp;
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case RD:
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return seekp-(f->wp-f->rp);
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case WR:
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return (f->flags&LINEBUF?f->lp:f->wp)-f->buf+seekp;
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}
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}
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