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93 lines
1.9 KiB
C
93 lines
1.9 KiB
C
/* @(#)filewrite.c 1.18 12/02/26 Copyright 1986, 1995-2012 J. Schilling */
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/*
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* Copyright (c) 1986, 1995-2012 J. Schilling
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#include "schilyio.h"
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static char _writeerr[] = "file_write_err";
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#ifdef HAVE_USG_STDIO
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EXPORT ssize_t
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filewrite(f, vbuf, len)
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register FILE *f;
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void *vbuf;
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size_t len;
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{
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register int n;
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ssize_t cnt;
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char *buf = vbuf;
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down2(f, _IOWRT, _IORW);
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if (f->_flag & _IONBF) {
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cnt = _niwrite(fileno(f), buf, len);
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if (cnt < 0) {
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f->_flag |= _IOERR;
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if (!(my_flag(f) & _JS_IONORAISE))
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raisecond(_writeerr, 0L);
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}
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return (cnt);
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}
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cnt = 0;
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while (len > 0) {
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if (f->_cnt <= 0) {
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if (usg_flsbuf((unsigned char) *buf++, f) == EOF)
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break;
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cnt++;
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if (--len == 0)
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break;
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}
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if ((n = f->_cnt >= len ? len : f->_cnt) > 0) {
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f->_ptr = (unsigned char *)movebytes(buf, f->_ptr, n);
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buf += n;
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f->_cnt -= n;
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cnt += n;
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len -= n;
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}
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}
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if (!ferror(f))
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return (cnt);
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if (!(my_flag(f) & _JS_IONORAISE) && !(_io_glflag & _JS_IONORAISE))
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raisecond(_writeerr, 0L);
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return (-1);
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}
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#else
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EXPORT ssize_t
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filewrite(f, vbuf, len)
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register FILE *f;
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void *vbuf;
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size_t len;
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{
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ssize_t cnt;
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char *buf = vbuf;
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down2(f, _IOWRT, _IORW);
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if (my_flag(f) & _JS_IOUNBUF)
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return (_niwrite(fileno(f), buf, len));
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cnt = fwrite(buf, 1, len, f);
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if (!ferror(f))
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return (cnt);
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if (!(my_flag(f) & _JS_IONORAISE) && !(_io_glflag & _JS_IONORAISE))
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raisecond(_writeerr, 0L);
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return (-1);
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}
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#endif /* HAVE_USG_STDIO */
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