tempnam.c
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:3k
- /*
- * Copyright (c) 1988 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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 = "from: @(#)tempnam.c 5.1 (Berkeley) 2/22/91";*/
- static char *rcsid = "$Id$";
- #endif /* LIBC_SCCS and not lint */
- #include <sys/param.h>
- #include <errno.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <unistd.h>
- /* #include <paths.h> */
- char *
- tempnam(dir, pfx)
- const char *dir, *pfx;
- {
- int sverrno;
- char *f, *name;
- if (!(name = malloc(MAXPATHLEN)))
- return(NULL);
- if (!pfx)
- pfx = "tmp.";
- if (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);
- }