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