1 /*- 2 * Copyright (c) 2009 David Schultz <das@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Copyright (c) 2011 The FreeBSD Foundation 6 * All rights reserved. 7 * Portions of this software were developed by David Chisnall 8 * under sponsorship from the FreeBSD Foundation. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $FreeBSD: head/lib/libc/stdio/vdprintf.c 227753 2011-11-20 14:45:42Z theraven $ 32 */ 33 34 #include "namespace.h" 35 #include <errno.h> 36 #include <limits.h> 37 #include <pthread.h> /* for FAKE_FILE PTHREAD_MUTEX_INITIALIZER */ 38 #include <stdarg.h> 39 #include <stdio.h> 40 #include "un-namespace.h" 41 42 #include "local.h" 43 #include "xlocale_private.h" 44 45 int 46 vdprintf(int fd, const char * __restrict fmt, va_list ap) 47 { 48 FILE f = FAKE_FILE; 49 unsigned char buf[BUFSIZ]; 50 int ret; 51 52 if (fd > SHRT_MAX) { 53 errno = EMFILE; 54 return (EOF); 55 } 56 57 f.pub._p = buf; 58 f.pub._w = sizeof(buf); 59 f.pub._flags = __SWR; 60 f.pub._fileno = fd; 61 f._cookie = &f; 62 f._write = __swrite; 63 f._bf._base = buf; 64 f._bf._size = sizeof(buf); 65 66 if ((ret = __vfprintf(&f, __get_locale(), fmt, ap)) < 0) 67 return (ret); 68 69 return (__fflush(&f) ? EOF : ret); 70 } 71