tempnam.c revision 16586
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. 131573Srgrimes * 3. All advertising materials mentioning features or use of this software 141573Srgrimes * must display the following acknowledgement: 151573Srgrimes * This product includes software developed by the University of 161573Srgrimes * California, Berkeley and its contributors. 171573Srgrimes * 4. Neither the name of the University nor the names of its contributors 181573Srgrimes * may be used to endorse or promote products derived from this software 191573Srgrimes * without specific prior written permission. 201573Srgrimes * 211573Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241573Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311573Srgrimes * SUCH DAMAGE. 321573Srgrimes */ 331573Srgrimes 341573Srgrimes#if defined(LIBC_SCCS) && !defined(lint) 3516586Sjraynard#if 0 361573Srgrimesstatic char sccsid[] = "@(#)tempnam.c 8.1 (Berkeley) 6/4/93"; 3716586Sjraynard#endif 3816586Sjraynardstatic const char rcsid[] = 3916586Sjraynard "$Id$"; 401573Srgrimes#endif /* LIBC_SCCS and not lint */ 411573Srgrimes 421573Srgrimes#include <sys/param.h> 431573Srgrimes#include <errno.h> 441573Srgrimes#include <stdio.h> 451573Srgrimes#include <stdlib.h> 4616586Sjraynard#include <string.h> 471573Srgrimes#include <unistd.h> 481573Srgrimes#include <paths.h> 491573Srgrimes 501573Srgrimeschar * 511573Srgrimestempnam(dir, pfx) 521573Srgrimes const char *dir, *pfx; 531573Srgrimes{ 541573Srgrimes int sverrno; 551573Srgrimes char *f, *name; 561573Srgrimes 571573Srgrimes if (!(name = malloc(MAXPATHLEN))) 581573Srgrimes return(NULL); 591573Srgrimes 601573Srgrimes if (!pfx) 611573Srgrimes pfx = "tmp."; 621573Srgrimes 6316337Sjraynard if ((f = getenv("TMPDIR"))) { 641573Srgrimes (void)snprintf(name, MAXPATHLEN, "%s%s%sXXXXXX", f, 651573Srgrimes *(f + strlen(f) - 1) == '/'? "": "/", pfx); 6616337Sjraynard if ((f = mktemp(name))) 671573Srgrimes return(f); 681573Srgrimes } 691573Srgrimes 7016337Sjraynard if ((f = (char *)dir)) { 711573Srgrimes (void)snprintf(name, MAXPATHLEN, "%s%s%sXXXXXX", f, 721573Srgrimes *(f + strlen(f) - 1) == '/'? "": "/", pfx); 7316337Sjraynard if ((f = mktemp(name))) 741573Srgrimes return(f); 751573Srgrimes } 761573Srgrimes 771573Srgrimes f = P_tmpdir; 781573Srgrimes (void)snprintf(name, MAXPATHLEN, "%s%sXXXXXX", f, pfx); 7916337Sjraynard if ((f = mktemp(name))) 801573Srgrimes return(f); 811573Srgrimes 821573Srgrimes f = _PATH_TMP; 831573Srgrimes (void)snprintf(name, MAXPATHLEN, "%s%sXXXXXX", f, pfx); 8416337Sjraynard if ((f = mktemp(name))) 851573Srgrimes return(f); 861573Srgrimes 871573Srgrimes sverrno = errno; 881573Srgrimes free(name); 891573Srgrimes errno = sverrno; 901573Srgrimes return(NULL); 911573Srgrimes} 92