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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 #include "lint.h" 31 #include "mtlib.h" 32 #include <sys/types.h> 33 #include <stdio.h> 34 #include <string.h> 35 #include <stdlib.h> 36 #include <errno.h> 37 #include <thread.h> 38 #include <synch.h> 39 #include "tsd.h" 40 41 static char seed[] = { 'a', 'a', 'a', '\0' }; 42 43 static mutex_t seed_lk = DEFAULTMUTEX; 44 45 char * 46 tmpnam_r(char *s) 47 { 48 char *p = s, *q; 49 50 if (!s) 51 return (NULL); 52 53 (void) strcpy(p, P_tmpdir); 54 lmutex_lock(&seed_lk); 55 (void) strcat(p, seed); 56 (void) strcat(p, "XXXXXX"); 57 58 q = seed; 59 while (*q == 'z') 60 *q++ = 'a'; 61 if (*q != '\0') 62 ++*q; 63 lmutex_unlock(&seed_lk); 64 (void) mktemp(p); 65 return (p); 66 } 67 68 char * 69 tmpnam(char *s) 70 { 71 if (s == NULL) 72 s = tsdalloc(_T_TMPNAM, L_tmpnam, NULL); 73 return (tmpnam_r(s)); 74 } 75