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WebSVN – planix.SVN – Blame – /os/branches/feature_fixcpp/sys/src/libstdio/sopenw.c – Rev 2

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/*
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 * pANS stdio -- sopenw
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 */
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#include "iolib.h"
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FILE *sopenw(void){
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	FILE *f;
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	qlock(&_stdiolk);
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	for(f=_IO_stream;f!=&_IO_stream[FOPEN_MAX];f++) if(f->state==CLOSED) break;
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	if(f==&_IO_stream[FOPEN_MAX]) {
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		qunlock(&_stdiolk);
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		return NULL;
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	}
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	f->buf=f->rp=f->wp=0;
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	f->state=OPEN;
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	f->flags=STRING;
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	f->fd=-1;
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	qunlock(&_stdiolk);
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	return f;
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}