sys/src/libstdio/setbuf.c

   1 /*
   2  * pANS stdio -- setbuf
   3  */
   4 #include "iolib.h"
   5 void setbuf(FILE *f, char *buf){
   6         if(f->state==OPEN){
   7                 if(buf)
   8                         f->bufl=BUFSIZ;
   9                 else{
  10                         buf=f->unbuf;
  11                         f->bufl=0;
  12                 }
  13                 f->rp=f->wp=f->lp=f->buf=buf;
  14                 f->state=RDWR;
  15         }
  16         /* else error, but there's no way to report it */
  17 }