StdLib/LibC/Stdio/tmpfile.c

   1 /** @file
   2
   3   Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
   4   This program and the accompanying materials are licensed and made available under
   5   the terms and conditions of the BSD License that accompanies this distribution.
   6   The full text of the license may be found at
   7   http://opensource.org/licenses/bsd-license.
   8
   9   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12  * Copyright (c) 1990, 1993
  13  *  The Regents of the University of California.  All rights reserved.
  14  *
  15  * This code is derived from software contributed to Berkeley by
  16  * Chris Torek.
  17  *
  18  * Redistribution and use in source and binary forms, with or without
  19  * modification, are permitted provided that the following conditions
  20  * are met:
  21  * 1. Redistributions of source code must retain the above copyright
  22  *    notice, this list of conditions and the following disclaimer.
  23  * 2. Redistributions in binary form must reproduce the above copyright
  24  *    notice, this list of conditions and the following disclaimer in the
  25  *    documentation and/or other materials provided with the distribution.
  26  * 3. Neither the name of the University nor the names of its contributors
  27  *    may be used to endorse or promote products derived from this software
  28  *    without specific prior written permission.
  29  *
  30  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  31  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  32  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  33  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  34  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  35  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  36  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  37  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  38  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  39  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  40  * SUCH DAMAGE.
  41
  42     tmpfile.c 8.1 (Berkeley) 6/4/93
  43     NetBSD: tmpfile.c,v 1.11 2003/08/07 16:43:33 agc Exp
  44 **/
  45 #include  <LibConfig.h>
  46 #include  <sys/EfiCdefs.h>
  47
  48 #include  "namespace.h"
  49 #include  <sys/types.h>
  50 #include  <signal.h>
  51 #include  <errno.h>
  52 #include  <stdio.h>
  53 #include  <stdlib.h>
  54 #include  <string.h>
  55 #include  <paths.h>
  56 #include  <unistd.h>
  57
  58 #define TRAILER "tmp.XXXX"
  59
  60 FILE *
  61 tmpfile()
  62 {
  63   //sigset_t set, oset;
  64   FILE *fp;
  65   int fd, sverrno;
  66   char buf[sizeof(_PATH_TMP) + sizeof(TRAILER)];
  67
  68   (void)memcpy(buf, _PATH_TMP, sizeof(_PATH_TMP) - 1);
  69   (void)memcpy(buf + sizeof(_PATH_TMP) - 1, TRAILER, sizeof(TRAILER));
  70
  71   //sigfillset(&set);
  72   //(void)sigprocmask(SIG_BLOCK, &set, &oset);
  73
  74   fd = mkstemp(buf);
  75   if (fd != -1) {
  76     /*  Changed from unlink(buf) because of differences between the behavior
  77         of Unix and UEFI file systems.
  78     */
  79     (void)DeleteOnClose(fd);
  80   }
  81
  82   //(void)sigprocmask(SIG_SETMASK, &oset, NULL);
  83
  84   if (fd == -1)
  85     return (NULL);
  86
  87   if ((fp = fdopen(fd, "w+")) == NULL) {
  88     sverrno = errno;
  89     (void)close(fd);
  90     errno = sverrno;
  91     return (NULL);
  92   }
  93   return (fp);
  94 }