ref: d764f1b643106a1e028f18104fe458a53ee39913
dir: /lib/c/_flsbuf.c/
#include <errno.h> #include <stdio.h> #include "syscall.h" int _flsbuf(FILE *fp) { int lnbuf = fp->flags & _IOLBF; size_t cnt; cnt = ((lnbuf) ? fp->lp : fp->wp) - fp->buf; if (_write(fp->fd, fp->buf, cnt) != cnt) { fp->flags |= _IOERR; return EOF; } fp->rp = fp->wp = fp->buf; return 0; }