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/* @(#)filewrite.c 1.13 03/06/15 Copyright 1986, 1995-2003 J. Schilling */
/*
* Copyright (c) 1986, 1995-2003 J. Schilling
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; see the file COPYING. If not, write to the Free Software
* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "io.h"
static char _writeerr[] = "file_write_err";
#ifdef HAVE_USG_STDIO
EXPORT int
filewrite(f, vbuf, len)
register FILE *f;
void *vbuf;
int len;
{
register int n;
int cnt;
char *buf = vbuf;
down2(f, _IOWRT, _IORW);
if (f->_flag & _IONBF) {
cnt = write(fileno(f), buf, len);
if (cnt < 0) {
f->_flag |= _IOERR;
if (!(my_flag(f) & _IONORAISE))
raisecond(_writeerr, 0L);
}
return (cnt);
}
cnt = 0;
while (len > 0) {
if (f->_cnt <= 0) {
if (usg_flsbuf((unsigned char) *buf++, f) == EOF)
break;
cnt++;
if (--len == 0)
break;
}
if ((n = f->_cnt >= len ? len : f->_cnt) > 0) {
f->_ptr = (unsigned char *)movebytes(buf, f->_ptr, n);
buf += n;
f->_cnt -= n;
cnt += n;
len -= n;
}
}
if (!ferror(f))
return (cnt);
if (!(my_flag(f) & _IONORAISE))
raisecond(_writeerr, 0L);
return (-1);
}
#else
EXPORT int
filewrite(f, vbuf, len)
register FILE *f;
void *vbuf;
int len;
{
int cnt;
char *buf = vbuf;
down2(f, _IOWRT, _IORW);
if (my_flag(f) & _IOUNBUF)
return (write(fileno(f), buf, len));
cnt = fwrite(buf, 1, len, f);
if (!ferror(f))
return (cnt);
if (!(my_flag(f) & _IONORAISE))
raisecond(_writeerr, 0L);
return (-1);
}
#endif /* HAVE_USG_STDIO */
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