/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1988, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)tempnam.c 8.1 (Berkeley) 6/4/93"; #endif /* LIBC_SCCS and not lint */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <errno.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <paths.h> __warn_references(tempnam, "warning: tempnam() possibly used unsafely; consider using mkstemp()"); extern char *_mktemp(char *); char * tempnam(const char *dir, const char *pfx) { int sverrno; char *f, *name; if (!(name = malloc(MAXPATHLEN))) return(NULL); if (!pfx) pfx = "tmp."; if (issetugid() == 0 && (f = getenv("TMPDIR"))) { (void)snprintf(name, MAXPATHLEN, "%s%s%sXXXXXX", f, *(f + strlen(f) - 1) == '/'? "": "/", pfx); if ((f = _mktemp(name))) return(f); } if ((f = (char *)dir)) { (void)snprintf(name, MAXPATHLEN, "%s%s%sXXXXXX", f, *(f + strlen(f) - 1) == '/'? "": "/", pfx); if ((f = _mktemp(name))) return(f); } f = P_tmpdir; (void)snprintf(name, MAXPATHLEN, "%s%sXXXXXX", f, pfx); if ((f = _mktemp(name))) return(f); f = _PATH_TMP; (void)snprintf(name, MAXPATHLEN, "%s%sXXXXXX", f, pfx); if ((f = _mktemp(name))) return(f); sverrno = errno; free(name); errno = sverrno; return(NULL); } |