1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate * 26*0Sstevel@tonic-gate * Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T 27*0Sstevel@tonic-gate * All Rights Reserved 28*0Sstevel@tonic-gate * 29*0Sstevel@tonic-gate * Portions of this source code were derived from Berkeley 30*0Sstevel@tonic-gate * 4.3 BSD under license from the regents of the University of 31*0Sstevel@tonic-gate * California. 32*0Sstevel@tonic-gate */ 33*0Sstevel@tonic-gate 34*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 35*0Sstevel@tonic-gate 36*0Sstevel@tonic-gate #include <sys/feature_tests.h> 37*0Sstevel@tonic-gate 38*0Sstevel@tonic-gate #if !defined(_LP64) && _FILE_OFFSET_BITS == 64 39*0Sstevel@tonic-gate #pragma weak mkstemp64 = _mkstemp64 40*0Sstevel@tonic-gate #define _mkstemp _mkstemp64 41*0Sstevel@tonic-gate #else 42*0Sstevel@tonic-gate #pragma weak mkstemp = _mkstemp 43*0Sstevel@tonic-gate #endif 44*0Sstevel@tonic-gate 45*0Sstevel@tonic-gate #include "synonyms.h" 46*0Sstevel@tonic-gate #include <sys/fcntl.h> 47*0Sstevel@tonic-gate #include <stdlib.h> 48*0Sstevel@tonic-gate #include <string.h> 49*0Sstevel@tonic-gate #include <errno.h> 50*0Sstevel@tonic-gate #include <alloca.h> 51*0Sstevel@tonic-gate #include <sys/types.h> 52*0Sstevel@tonic-gate #include <sys/stat.h> 53*0Sstevel@tonic-gate #include <fcntl.h> 54*0Sstevel@tonic-gate 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate int 57*0Sstevel@tonic-gate _mkstemp(char *as) 58*0Sstevel@tonic-gate { 59*0Sstevel@tonic-gate int fd; 60*0Sstevel@tonic-gate char *tstr, *str, *mkret; 61*0Sstevel@tonic-gate 62*0Sstevel@tonic-gate if (as == NULL || *as == NULL) 63*0Sstevel@tonic-gate return (-1); 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate tstr = alloca(strlen(as) + 1); 66*0Sstevel@tonic-gate (void) strcpy(tstr, as); 67*0Sstevel@tonic-gate 68*0Sstevel@tonic-gate str = tstr + (strlen(tstr) - 1); 69*0Sstevel@tonic-gate 70*0Sstevel@tonic-gate /* 71*0Sstevel@tonic-gate * The following for() loop is doing work. mktemp() will generate 72*0Sstevel@tonic-gate * a different name each time through the loop. So if the first 73*0Sstevel@tonic-gate * name is used then keep trying until you find a free filename. 74*0Sstevel@tonic-gate */ 75*0Sstevel@tonic-gate 76*0Sstevel@tonic-gate for (; ; ) { 77*0Sstevel@tonic-gate if (*str == 'X') { /* If no trailing X's don't call mktemp. */ 78*0Sstevel@tonic-gate mkret = mktemp(as); 79*0Sstevel@tonic-gate if (*mkret == '\0') { 80*0Sstevel@tonic-gate return (-1); 81*0Sstevel@tonic-gate } 82*0Sstevel@tonic-gate } 83*0Sstevel@tonic-gate #if _FILE_OFFSET_BITS == 64 84*0Sstevel@tonic-gate if ((fd = open64(as, O_CREAT|O_EXCL|O_RDWR, 0600)) != -1) { 85*0Sstevel@tonic-gate return (fd); 86*0Sstevel@tonic-gate } 87*0Sstevel@tonic-gate #else 88*0Sstevel@tonic-gate if ((fd = open(as, O_CREAT|O_EXCL|O_RDWR, 0600)) != -1) { 89*0Sstevel@tonic-gate return (fd); 90*0Sstevel@tonic-gate } 91*0Sstevel@tonic-gate #endif /* _FILE_OFFSET_BITS == 64 */ 92*0Sstevel@tonic-gate 93*0Sstevel@tonic-gate /* 94*0Sstevel@tonic-gate * If the error condition is other than EEXIST or if the 95*0Sstevel@tonic-gate * file exists and there are no X's in the string 96*0Sstevel@tonic-gate * return -1. 97*0Sstevel@tonic-gate */ 98*0Sstevel@tonic-gate 99*0Sstevel@tonic-gate if ((errno != EEXIST) || (*str != 'X')) { 100*0Sstevel@tonic-gate return (-1); 101*0Sstevel@tonic-gate } 102*0Sstevel@tonic-gate (void) strcpy(as, tstr); 103*0Sstevel@tonic-gate } 104*0Sstevel@tonic-gate } 105