StdLib/LibC/Stdio/tmpfile.c

   1 /*  $NetBSD: tmpfile.c,v 1.11 2003/08/07 16:43:33 agc Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1990, 1993
   5  *  The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Chris Torek.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34 #include  <LibConfig.h>
  35 #include  <sys/EfiCdefs.h>
  36 #if defined(LIBC_SCCS) && !defined(lint)
  37 #if 0
  38 static char sccsid[] = "@(#)tmpfile.c 8.1 (Berkeley) 6/4/93";
  39 #else
  40 __RCSID("$NetBSD: tmpfile.c,v 1.11 2003/08/07 16:43:33 agc Exp $");
  41 #endif
  42 #endif /* LIBC_SCCS and not lint */
  43
  44 #include  "namespace.h"
  45 #include  <sys/types.h>
  46 #include  <sys/EfiSysCall.h>
  47 #include  <signal.h>
  48 #include  <errno.h>
  49 #include  <stdio.h>
  50 #include  <stdlib.h>
  51 #include  <string.h>
  52 #include  <paths.h>
  53
  54 #define TRAILER "tmp.XXXX"
  55
  56 FILE *
  57 tmpfile()
  58 {
  59   //sigset_t set, oset;
  60   FILE *fp;
  61   int fd, sverrno;
  62   char buf[sizeof(_PATH_TMP) + sizeof(TRAILER)];
  63
  64   (void)memcpy(buf, _PATH_TMP, sizeof(_PATH_TMP) - 1);
  65   (void)memcpy(buf + sizeof(_PATH_TMP) - 1, TRAILER, sizeof(TRAILER));
  66
  67   //sigfillset(&set);
  68   //(void)sigprocmask(SIG_BLOCK, &set, &oset);
  69
  70   fd = mkstemp(buf);
  71   if (fd != -1) {
  72     /*  Changed from unlink(buf) because of differences between the behavior
  73         of Unix and UEFI file systems.
  74     */
  75     (void)DeleteOnClose(fd);
  76   }
  77
  78   //(void)sigprocmask(SIG_SETMASK, &oset, NULL);
  79
  80   if (fd == -1)
  81     return (NULL);
  82
  83   if ((fp = fdopen(fd, "w+")) == NULL) {
  84     sverrno = errno;
  85     (void)close(fd);
  86     errno = sverrno;
  87     return (NULL);
  88   }
  89   return (fp);
  90 }