jehanne/sys/src/lib/stdio/fopen.c

26 lines
716 B
C

/*
* This file is part of the UCB release of Plan 9. It is subject to the license
* terms in the LICENSE file found in the top-level directory of this
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
* part of the UCB release of Plan 9, including this file, may be copied,
* modified, propagated, or distributed except according to the terms contained
* in the LICENSE file.
*/
/*
* pANS stdio -- fopen
*/
#include "iolib.h"
FILE *fopen(const char *name, const char *mode){
FILE *f;
qlock(&_stdiolk);
for(f=_IO_stream;f!=&_IO_stream[FOPEN_MAX];f++) {
if(f->state==CLOSED) {
qunlock(&_stdiolk);
return freopen(name, mode, f);
}
}
qunlock(&_stdiolk);
return NULL;
}