1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1989 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" /* from S5R3 1.11 */ 28 29 /* Copyright (c) 1984 AT&T */ 30 /* All Rights Reserved */ 31 32 33 /*LINTLIBRARY*/ 34 /**************************************************************** 35 * Routine expects a string of length at least 6, with 36 * six trailing 'X's. These will be overlaid with a 37 * letter and the last (5) digigts of the proccess ID. 38 * If every letter (a thru z) thus inserted leads to 39 * an existing file name, your string is shortened to 40 * length zero upon return (first character set to '\0'). 41 ***************************************************************/ 42 #include <sys/types.h> 43 #include <sys/stat.h> 44 45 #define XCNT 6 46 47 extern int strlen(), access(), getpid(); 48 49 char * 50 mktemp(as) 51 char *as; 52 { 53 register char *s=as; 54 register unsigned pid; 55 register unsigned xcnt=0; /* keeps track of number of X's seen */ 56 struct stat buf; 57 58 pid = getpid(); 59 s += strlen(as); /* point at the terminal null */ 60 while(*--s == 'X' && ++xcnt <= XCNT) { 61 *s = (pid%10) + '0'; 62 pid /= 10; 63 } 64 if(*++s) { /* maybe there were no 'X's */ 65 *s = 'a'; 66 while (stat(as, &buf) == 0) { 67 if(++*s > 'z') { 68 *as = '\0'; 69 break; 70 } 71 } 72 } else 73 if (stat(as, &buf) == 0) 74 *as = '\0'; 75 return(as); 76 } 77