ref: f18ed453ebe4e6e03a96804fd5a596d067fe0d04
dir: /libc/fmtfdflush.c/
/*
* The authors of this software are Rob Pike and Ken Thompson.
* Copyright (c) 2002 by Lucent Technologies.
* Permission to use, copy, modify, and distribute this software for any
* purpose without fee is hereby granted, provided that this entire notice
* is included in all copies of any software which is or includes a copy
* or modification of this software and in all copies of the supporting
* documentation for such software.
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
* ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
* OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
*/
#include <inttypes.h>
#include <u.h>
#include <libc.h>
#include "fmtdef.h"
/*
* generic routine for flushing a formatting buffer
* to a file descriptor
*/
int
__fmtFdFlush(Fmt *f)
{
int n;
n = (char*)f->to - (char*)f->start;
if(n && write((uintptr_t)f->farg, f->start, n) != n)
return 0;
f->to = f->start;
return 1;
}