tmpfile.c - vx32 - Local 9vx git repository for patches.
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       ---
       tmpfile.c (2804B)
       ---
            1 /*-
            2  * Copyright (c) 1990, 1993
            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  * 3. All advertising materials mentioning features or use of this software
           17  *    must display the following acknowledgement:
           18  *        This product includes software developed by the University of
           19  *        California, Berkeley and its contributors.
           20  * 4. Neither the name of the University nor the names of its contributors
           21  *    may be used to endorse or promote products derived from this software
           22  *    without specific prior written permission.
           23  *
           24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
           25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
           26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
           27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
           28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
           29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
           30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
           31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
           32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
           33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
           34  * SUCH DAMAGE.
           35  */
           36 
           37 #include <sys/types.h>
           38 #include <signal.h>
           39 #include <unistd.h>
           40 #include <errno.h>
           41 #include <stdio.h>
           42 #include <stdlib.h>
           43 #include <string.h>
           44 
           45 FILE *
           46 tmpfile(void)
           47 {
           48         sigset_t set, oset;
           49         FILE *fp;
           50         int fd, sverrno;
           51 #define        TRAILER        "tmp.XXXXXX"
           52         char *buf;
           53         const char *tmpdir;
           54 
           55         tmpdir = NULL;
           56 //        if (issetugid() == 0)
           57                 tmpdir = getenv("TMPDIR");
           58         if (tmpdir == NULL)
           59                 tmpdir = "/var/tmp";
           60 
           61         (void)asprintf(&buf, "%s%s%s", tmpdir,
           62             (tmpdir[strlen(tmpdir) - 1] == '/') ? "" : "/", TRAILER);
           63         if (buf == NULL)
           64                 return (NULL);
           65 
           66 //        sigfillset(&set);
           67 //        (void)_sigprocmask(SIG_BLOCK, &set, &oset);
           68 
           69         fd = mkstemp(buf);
           70         if (fd != -1)
           71                 (void)unlink(buf);
           72 
           73         free(buf);
           74 
           75 //        (void)_sigprocmask(SIG_SETMASK, &oset, NULL);
           76 
           77         if (fd == -1)
           78                 return (NULL);
           79 
           80         if ((fp = fdopen(fd, "w+")) == NULL) {
           81                 sverrno = errno;
           82                 (void)close(fd);
           83                 errno = sverrno;
           84                 return (NULL);
           85         }
           86         return (fp);
           87 }