11573Srgrimes/* 21573Srgrimes * Copyright (c) 1988, 1993 31573Srgrimes * The Regents of the University of California. All rights reserved. 41573Srgrimes * 51573Srgrimes * Redistribution and use in source and binary forms, with or without 61573Srgrimes * modification, are permitted provided that the following conditions 71573Srgrimes * are met: 81573Srgrimes * 1. Redistributions of source code must retain the above copyright 91573Srgrimes * notice, this list of conditions and the following disclaimer. 101573Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111573Srgrimes * notice, this list of conditions and the following disclaimer in the 121573Srgrimes * documentation and/or other materials provided with the distribution. 13249808Semaste * 3. Neither the name of the University nor the names of its contributors 141573Srgrimes * may be used to endorse or promote products derived from this software 151573Srgrimes * without specific prior written permission. 161573Srgrimes * 171573Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201573Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271573Srgrimes * SUCH DAMAGE. 281573Srgrimes */ 291573Srgrimes 301573Srgrimes#if defined(LIBC_SCCS) && !defined(lint) 311573Srgrimesstatic char sccsid[] = "@(#)tempnam.c 8.1 (Berkeley) 6/4/93"; 321573Srgrimes#endif /* LIBC_SCCS and not lint */ 3392986Sobrien#include <sys/cdefs.h> 3492986Sobrien__FBSDID("$FreeBSD$"); 351573Srgrimes 361573Srgrimes#include <sys/param.h> 371573Srgrimes#include <errno.h> 381573Srgrimes#include <stdio.h> 391573Srgrimes#include <stdlib.h> 4016586Sjraynard#include <string.h> 411573Srgrimes#include <unistd.h> 421573Srgrimes#include <paths.h> 431573Srgrimes 4450121Simp__warn_references(tempnam, 4550121Simp "warning: tempnam() possibly used unsafely; consider using mkstemp()"); 4650121Simp 4792905Sobrienextern char *_mktemp(char *); 4850121Simp 491573Srgrimeschar * 50249810Semastetempnam(const char *dir, const char *pfx) 511573Srgrimes{ 521573Srgrimes int sverrno; 531573Srgrimes char *f, *name; 541573Srgrimes 551573Srgrimes if (!(name = malloc(MAXPATHLEN))) 561573Srgrimes return(NULL); 571573Srgrimes 581573Srgrimes if (!pfx) 591573Srgrimes pfx = "tmp."; 601573Srgrimes 6150121Simp if (issetugid() == 0 && (f = getenv("TMPDIR"))) { 621573Srgrimes (void)snprintf(name, MAXPATHLEN, "%s%s%sXXXXXX", f, 631573Srgrimes *(f + strlen(f) - 1) == '/'? "": "/", pfx); 6450121Simp if ((f = _mktemp(name))) 651573Srgrimes return(f); 661573Srgrimes } 671573Srgrimes 6816337Sjraynard if ((f = (char *)dir)) { 691573Srgrimes (void)snprintf(name, MAXPATHLEN, "%s%s%sXXXXXX", f, 701573Srgrimes *(f + strlen(f) - 1) == '/'? "": "/", pfx); 7152466Sache if ((f = _mktemp(name))) 721573Srgrimes return(f); 731573Srgrimes } 741573Srgrimes 751573Srgrimes f = P_tmpdir; 761573Srgrimes (void)snprintf(name, MAXPATHLEN, "%s%sXXXXXX", f, pfx); 7752466Sache if ((f = _mktemp(name))) 781573Srgrimes return(f); 791573Srgrimes 801573Srgrimes f = _PATH_TMP; 811573Srgrimes (void)snprintf(name, MAXPATHLEN, "%s%sXXXXXX", f, pfx); 8252466Sache if ((f = _mktemp(name))) 831573Srgrimes return(f); 841573Srgrimes 851573Srgrimes sverrno = errno; 861573Srgrimes free(name); 871573Srgrimes errno = sverrno; 881573Srgrimes return(NULL); 891573Srgrimes} 90