| | 1 | /*- |
| | 2 | * Copyright (c) 1990, 1993, 1994 |
| | 3 | * The Regents of the University of California. All rights reserved. |
| | 4 | * |
| | 5 | * This code is derived from software contributed to Berkeley by |
| | 6 | * Chris Torek. |
| | 7 | * |
| | 8 | * Redistribution and use in source and binary forms, with or without |
| | 9 | * modification, are permitted provided that the following conditions |
| | 10 | * are met: |
| | 11 | * 1. Redistributions of source code must retain the above copyright |
| | 12 | * notice, this list of conditions and the following disclaimer. |
| | 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 14 | * notice, this list of conditions and the following disclaimer in the |
| | 15 | * documentation and/or other materials provided with the distribution. |
| | 16 | * 4. Neither the name of the University nor the names of its contributors |
| | 17 | * may be used to endorse or promote products derived from this software |
| | 18 | * without specific prior written permission. |
| | 19 | * |
| | 20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| | 24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| | 26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| | 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 30 | * SUCH DAMAGE. |
| | 31 | */ |
| | 32 | |
| | 33 | #if defined(LIBC_SCCS) && !defined(lint) |
| | 34 | static char sccsid[] = "@(#)tmpnam.c 8.3 (Berkeley) 3/28/94"; |
| | 35 | #endif /* LIBC_SCCS and not lint */ |
| | 36 | #include <sys/cdefs.h> |
| | 37 | __FBSDID("$FreeBSD: src/lib/libc/stdio/tmpnam.c,v 1.6 2007/01/09 00:28:07 imp Exp $"); |
| | 38 | |
| | 39 | #include <sys/types.h> |
| | 40 | |
| | 41 | #include <stdio.h> |
| | 42 | #include <unistd.h> |
| | 43 | #include <pthread.h> |
| | 44 | #include <stdlib.h> |
| | 45 | |
| | 46 | __warn_references(tmpnam, |
| | 47 | "warning: tmpnam() possibly used unsafely; consider using mkstemp()"); |
| | 48 | |
| | 49 | extern char *_mktemp(char *); |
| | 50 | |
| | 51 | static char *tmpnam_buf = NULL; |
| | 52 | static pthread_once_t tmpnam_buf_control = PTHREAD_ONCE_INIT; |
| | 53 | |
| | 54 | static void tmpnam_buf_allocate(void) |
| | 55 | { |
| | 56 | tmpnam_buf = malloc(L_tmpnam); |
| | 57 | } |
| | 58 | |
| | 59 | char * |
| | 60 | tmpnam(s) |
| | 61 | char *s; |
| | 62 | { |
| | 63 | static u_long tmpcount; |
| | 64 | |
| | 65 | if (s == NULL) { |
| | 66 | if (pthread_once(&tmpnam_buf_control, tmpnam_buf_allocate) |
| | 67 | || !tmpnam_buf) { |
| | 68 | return NULL; |
| | 69 | } |
| | 70 | s = tmpnam_buf; |
| | 71 | } |
| | 72 | (void)snprintf(s, L_tmpnam, "%stmp.%lu.XXXXXX", P_tmpdir, tmpcount); |
| | 73 | ++tmpcount; |
| | 74 | return (_mktemp(s)); |
| | 75 | } |
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