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/*
* pANS stdio -- fopen
*/
#include "iolib.h"
#define _PLAN9_SOURCE
#include <lock.h>
#include <errno.h>
FILE *_IO_newfile(void)
{
static FILE *fx=0;
static Lock fl;
FILE *f;
int i;
lock(&fl);
for(i=0; i<FOPEN_MAX; i++){
if(fx==0 || ++fx >= &_IO_stream[FOPEN_MAX]) fx=_IO_stream;
if(fx->state==CLOSED)
break;
}
f = fx;
unlock(&fl);
if(f->state!=CLOSED){
errno = EMFILE;
return NULL;
}
return f;
}
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