17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * Copyright (c) 1987, 1993
37c478bd9Sstevel@tonic-gate  *    The Regents of the University of California.  All rights reserved.
47c478bd9Sstevel@tonic-gate  *
57c478bd9Sstevel@tonic-gate  * Redistribution and use in source and binary forms, with or without
67c478bd9Sstevel@tonic-gate  * modification, are permitted provided that the following conditions
77c478bd9Sstevel@tonic-gate  * are met:
87c478bd9Sstevel@tonic-gate  * 1. Redistributions of source code must retain the above copyright
97c478bd9Sstevel@tonic-gate  *    notice, this list of conditions and the following disclaimer.
107c478bd9Sstevel@tonic-gate  * 2. Redistributions in binary form must reproduce the above copyright
117c478bd9Sstevel@tonic-gate  *    notice, this list of conditions and the following disclaimer in the
127c478bd9Sstevel@tonic-gate  *    documentation and/or other materials provided with the distribution.
137c478bd9Sstevel@tonic-gate  * 3. All advertising materials mentioning features or use of this software
147c478bd9Sstevel@tonic-gate  *    must display the following acknowledgement:
157c478bd9Sstevel@tonic-gate  * 	This product includes software developed by the University of
167c478bd9Sstevel@tonic-gate  * 	California, Berkeley and its contributors.
177c478bd9Sstevel@tonic-gate  * 4. Neither the name of the University nor the names of its contributors
187c478bd9Sstevel@tonic-gate  *    may be used to endorse or promote products derived from this software
197c478bd9Sstevel@tonic-gate  *    without specific prior written permission.
207c478bd9Sstevel@tonic-gate  *
217c478bd9Sstevel@tonic-gate  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
227c478bd9Sstevel@tonic-gate  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
237c478bd9Sstevel@tonic-gate  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
247c478bd9Sstevel@tonic-gate  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
257c478bd9Sstevel@tonic-gate  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
267c478bd9Sstevel@tonic-gate  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
277c478bd9Sstevel@tonic-gate  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
287c478bd9Sstevel@tonic-gate  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
297c478bd9Sstevel@tonic-gate  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
307c478bd9Sstevel@tonic-gate  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
317c478bd9Sstevel@tonic-gate  * SUCH DAMAGE.
327c478bd9Sstevel@tonic-gate  */
337c478bd9Sstevel@tonic-gate 
347c478bd9Sstevel@tonic-gate /*
357c478bd9Sstevel@tonic-gate  * Portions Copyright (c) 1993 by Digital Equipment Corporation.
367c478bd9Sstevel@tonic-gate  *
377c478bd9Sstevel@tonic-gate  * Permission to use, copy, modify, and distribute this software for any
387c478bd9Sstevel@tonic-gate  * purpose with or without fee is hereby granted, provided that the above
397c478bd9Sstevel@tonic-gate  * copyright notice and this permission notice appear in all copies, and that
407c478bd9Sstevel@tonic-gate  * the name of Digital Equipment Corporation not be used in advertising or
417c478bd9Sstevel@tonic-gate  * publicity pertaining to distribution of the document or software without
427c478bd9Sstevel@tonic-gate  * specific, written prior permission.
437c478bd9Sstevel@tonic-gate  *
447c478bd9Sstevel@tonic-gate  * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
457c478bd9Sstevel@tonic-gate  * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
467c478bd9Sstevel@tonic-gate  * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
477c478bd9Sstevel@tonic-gate  * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
487c478bd9Sstevel@tonic-gate  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
497c478bd9Sstevel@tonic-gate  * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
507c478bd9Sstevel@tonic-gate  * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
517c478bd9Sstevel@tonic-gate  * SOFTWARE.
527c478bd9Sstevel@tonic-gate  */
537c478bd9Sstevel@tonic-gate 
547c478bd9Sstevel@tonic-gate #include "port_before.h"
557c478bd9Sstevel@tonic-gate 
567c478bd9Sstevel@tonic-gate #include <sys/types.h>
577c478bd9Sstevel@tonic-gate #include <sys/stat.h>
587c478bd9Sstevel@tonic-gate 
597c478bd9Sstevel@tonic-gate #include <ctype.h>
607c478bd9Sstevel@tonic-gate #include <errno.h>
617c478bd9Sstevel@tonic-gate #include <fcntl.h>
627c478bd9Sstevel@tonic-gate #include <stdio.h>
637c478bd9Sstevel@tonic-gate 
647c478bd9Sstevel@tonic-gate #include "port_after.h"
657c478bd9Sstevel@tonic-gate 
667c478bd9Sstevel@tonic-gate #if (!defined(NEED_MKTEMP)) && (!defined(NEED_MKSTEMP))
677c478bd9Sstevel@tonic-gate int __mktemp_unneeded__;
687c478bd9Sstevel@tonic-gate #else
697c478bd9Sstevel@tonic-gate 
707c478bd9Sstevel@tonic-gate static int gettemp(char *path, int *doopen);
717c478bd9Sstevel@tonic-gate 
727c478bd9Sstevel@tonic-gate #ifdef NEED_MKSTEMP
mkstemp(char * path)737c478bd9Sstevel@tonic-gate mkstemp(char *path) {
747c478bd9Sstevel@tonic-gate 	int fd;
757c478bd9Sstevel@tonic-gate 
767c478bd9Sstevel@tonic-gate 	return (gettemp(path, &fd) ? fd : -1);
777c478bd9Sstevel@tonic-gate }
787c478bd9Sstevel@tonic-gate #endif
797c478bd9Sstevel@tonic-gate 
807c478bd9Sstevel@tonic-gate #ifdef NEED_MKTEMP
817c478bd9Sstevel@tonic-gate char *
mktemp(char * path)827c478bd9Sstevel@tonic-gate mktemp(char *path) {
837c478bd9Sstevel@tonic-gate 	return(gettemp(path, (int *)NULL) ? path : (char *)NULL);
847c478bd9Sstevel@tonic-gate }
857c478bd9Sstevel@tonic-gate #endif
867c478bd9Sstevel@tonic-gate 
877c478bd9Sstevel@tonic-gate static int
gettemp(char * path,int * doopen)887c478bd9Sstevel@tonic-gate gettemp(char *path, int *doopen) {
897c478bd9Sstevel@tonic-gate 	char *start, *trv;
907c478bd9Sstevel@tonic-gate 	struct stat sbuf;
917c478bd9Sstevel@tonic-gate 	u_int pid;
927c478bd9Sstevel@tonic-gate 
937c478bd9Sstevel@tonic-gate 	pid = getpid();
94*9525b14bSRao Shoaib 	for (trv = path; *trv; ++trv);		/*%< extra X's get set to 0's */
957c478bd9Sstevel@tonic-gate 	while (*--trv == 'X') {
967c478bd9Sstevel@tonic-gate 		*trv = (pid % 10) + '0';
977c478bd9Sstevel@tonic-gate 		pid /= 10;
987c478bd9Sstevel@tonic-gate 	}
997c478bd9Sstevel@tonic-gate 
1007c478bd9Sstevel@tonic-gate 	/*
1017c478bd9Sstevel@tonic-gate 	 * check the target directory; if you have six X's and it
1027c478bd9Sstevel@tonic-gate 	 * doesn't exist this runs for a *very* long time.
1037c478bd9Sstevel@tonic-gate 	 */
1047c478bd9Sstevel@tonic-gate 	for (start = trv + 1;; --trv) {
1057c478bd9Sstevel@tonic-gate 		if (trv <= path)
1067c478bd9Sstevel@tonic-gate 			break;
1077c478bd9Sstevel@tonic-gate 		if (*trv == '/') {
1087c478bd9Sstevel@tonic-gate 			*trv = '\0';
1097c478bd9Sstevel@tonic-gate 			if (stat(path, &sbuf))
1107c478bd9Sstevel@tonic-gate 				return(0);
1117c478bd9Sstevel@tonic-gate 			if (!S_ISDIR(sbuf.st_mode)) {
1127c478bd9Sstevel@tonic-gate 				errno = ENOTDIR;
1137c478bd9Sstevel@tonic-gate 				return(0);
1147c478bd9Sstevel@tonic-gate 			}
1157c478bd9Sstevel@tonic-gate 			*trv = '/';
1167c478bd9Sstevel@tonic-gate 			break;
1177c478bd9Sstevel@tonic-gate 		}
1187c478bd9Sstevel@tonic-gate 	}
1197c478bd9Sstevel@tonic-gate 
1207c478bd9Sstevel@tonic-gate 	for (;;) {
1217c478bd9Sstevel@tonic-gate 		if (doopen) {
1227c478bd9Sstevel@tonic-gate 			if ((*doopen =
1237c478bd9Sstevel@tonic-gate 			    open(path, O_CREAT|O_EXCL|O_RDWR, 0600)) >= 0)
1247c478bd9Sstevel@tonic-gate 				return(1);
1257c478bd9Sstevel@tonic-gate 			if (errno != EEXIST)
1267c478bd9Sstevel@tonic-gate 				return(0);
1277c478bd9Sstevel@tonic-gate 		}
1287c478bd9Sstevel@tonic-gate 		else if (stat(path, &sbuf))
1297c478bd9Sstevel@tonic-gate 			return(errno == ENOENT ? 1 : 0);
1307c478bd9Sstevel@tonic-gate 
1317c478bd9Sstevel@tonic-gate 		/* tricky little algorithm for backward compatibility */
1327c478bd9Sstevel@tonic-gate 		for (trv = start;;) {
1337c478bd9Sstevel@tonic-gate 			if (!*trv)
1347c478bd9Sstevel@tonic-gate 				return(0);
1357c478bd9Sstevel@tonic-gate 			if (*trv == 'z')
1367c478bd9Sstevel@tonic-gate 				*trv++ = 'a';
1377c478bd9Sstevel@tonic-gate 			else {
1387c478bd9Sstevel@tonic-gate 				if (isdigit(*trv))
1397c478bd9Sstevel@tonic-gate 					*trv = 'a';
1407c478bd9Sstevel@tonic-gate 				else
1417c478bd9Sstevel@tonic-gate 					++*trv;
1427c478bd9Sstevel@tonic-gate 				break;
1437c478bd9Sstevel@tonic-gate 			}
1447c478bd9Sstevel@tonic-gate 		}
1457c478bd9Sstevel@tonic-gate 	}
1467c478bd9Sstevel@tonic-gate 	/*NOTREACHED*/
1477c478bd9Sstevel@tonic-gate }
1487c478bd9Sstevel@tonic-gate 
1497c478bd9Sstevel@tonic-gate #endif /*NEED_MKTEMP*/
150*9525b14bSRao Shoaib 
151*9525b14bSRao Shoaib /*! \file */
152