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Annotation of prex-old/usr/lib/libc/stdio/tempnam.c, Revision 1.1.1.1

1.1       nbrk        1: /*
                      2:  * Copyright (c) 1988, 1993
                      3:  *     The Regents of the University of California.  All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. Neither the name of the University nor the names of its contributors
                     14:  *    may be used to endorse or promote products derived from this software
                     15:  *    without specific prior written permission.
                     16:  *
                     17:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     27:  * SUCH DAMAGE.
                     28:  */
                     29:
                     30: #include <sys/param.h>
                     31: #include <errno.h>
                     32: #include <stdio.h>
                     33: #include <stdlib.h>
                     34: #include <string.h>
                     35: #include <unistd.h>
                     36: #include <paths.h>
                     37:
                     38: char *
                     39: tempnam(dir, pfx)
                     40:        const char *dir, *pfx;
                     41: {
                     42:        int sverrno;
                     43:        char *f, *name;
                     44:
                     45:        if (!(name = malloc((size_t)MAXPATHLEN)))
                     46:                return(NULL);
                     47:
                     48:        if (!pfx)
                     49:                pfx = "tmp.";
                     50:
                     51:        if ((f = getenv("TMPDIR")) != NULL) {
                     52:                (void)snprintf(name, (size_t)MAXPATHLEN, "%s%s%sXXXXXXXXXX", f,
                     53:                    *(f + strlen(f) - 1) == '/'? "": "/", pfx);
                     54:                if ((f = mktemp(name)) != NULL)
                     55:                        return(f);
                     56:        }
                     57:
                     58:        if ((/* LINTED */f = (char *)dir) != NULL) {
                     59:                (void)snprintf(name, (size_t)MAXPATHLEN, "%s%s%sXXXXXXXXXX", f,
                     60:                    *(f + strlen(f) - 1) == '/'? "": "/", pfx);
                     61:                if ((f = mktemp(name)) != NULL)
                     62:                        return(f);
                     63:        }
                     64:
                     65:        f = P_tmpdir;
                     66:        (void)snprintf(name, (size_t)MAXPATHLEN, "%s%sXXXXXXXXXX", f, pfx);
                     67:        if ((f = mktemp(name)) != NULL)
                     68:                return(f);
                     69:
                     70:        f = _PATH_TMP;
                     71:        (void)snprintf(name, (size_t)MAXPATHLEN, "%s%sXXXXXXXXXX", f, pfx);
                     72:        if ((f = mktemp(name)) != NULL)
                     73:                return(f);
                     74:
                     75:        sverrno = errno;
                     76:        free(name);
                     77:        errno = sverrno;
                     78:        return(NULL);
                     79: }