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 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 * 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 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