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/* $OpenBSD: vdprintf.c,v 1.2 2015/08/31 02:53:57 guenther Exp $ */ |
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/* $FreeBSD: src/lib/libc/stdio/vdprintf.c,v 1.4 2012/11/17 01:49:40 svnexp Exp $ */ |
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/*- |
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* Copyright (c) 2009 David Schultz <das@FreeBSD.org> |
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* All rights reserved. |
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* |
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* Copyright (c) 2011 The FreeBSD Foundation |
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* All rights reserved. |
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* Portions of this software were developed by David Chisnall |
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* under sponsorship from the FreeBSD Foundation. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#include <errno.h> |
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#include <stdarg.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include "local.h" |
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static int |
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__dwrite(void *cookie, const char *buf, int n) |
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{ |
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int *fdp = cookie; |
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return (write(*fdp, buf, n)); |
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} |
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int |
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vdprintf(int fd, const char * __restrict fmt, va_list ap) |
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{ |
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FILE f; |
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struct __sfileext fext; |
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unsigned char buf[BUFSIZ]; |
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int ret; |
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_FILEEXT_SETUP(&f, &fext); |
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f._p = buf; |
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f._w = sizeof(buf); |
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f._flags = __SWR; |
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f._file = -1; |
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f._bf._base = buf; |
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f._bf._size = sizeof(buf); |
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f._cookie = &fd; |
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f._write = __dwrite; |
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✗✓ |
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if ((ret = __vfprintf(&f, fmt, ap)) < 0) |
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return ret; |
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return fflush(&f) ? EOF : ret; |
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} |
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DEF_WEAK(vdprintf); |