usr/src/lib/libast/common/comp/mktemp.c

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1985-2010 AT&T Intellectual Property          *
   5 *                      and is licensed under the                       *
   6 *                  Common Public License, Version 1.0                  *
   7 *                    by AT&T Intellectual Property                     *
   8 *                                                                      *
   9 *                A copy of the License is available at                 *
  10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
  11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
  12 *                                                                      *
  13 *              Information and Software Systems Research               *
  14 *                            AT&T Research                             *
  15 *                           Florham Park NJ                            *
  16 *                                                                      *
  17 *                 Glenn Fowler <gsf@research.att.com>                  *
  18 *                  David Korn <dgk@research.att.com>                   *
  19 *                   Phong Vo <kpv@research.att.com>                    *
  20 *                                                                      *
  21 ***********************************************************************/
  22 #pragma prototyped
  23 /*
  24  * mktemp,mkstemp implementation
  25  */
  26
  27 #define mktemp          ______mktemp
  28 #define mkstemp         ______mkstemp
  29
  30 #include <ast.h>
  31 #include <stdio.h>
  32
  33 #undef  mktemp
  34 #undef  mkstemp
  35
  36 #undef  _def_map_ast
  37 #include <ast_map.h>
  38
  39 #if defined(__EXPORT__)
  40 #define extern  __EXPORT__
  41 #endif
  42
  43 static char*
  44 temp(char* buf, int* fdp)
  45 {
  46         char*   s;
  47         char*   d;
  48         int     n;
  49         size_t  len;
  50
  51         len = strlen(buf);
  52         if (s = strrchr(buf, '/'))
  53         {
  54                 *s++ = 0;
  55                 d = buf;
  56         }
  57         else
  58         {
  59                 s = buf;
  60                 d = "";
  61         }
  62         if ((n = strlen(s)) < 6 || strcmp(s + n - 6, "XXXXXX"))
  63                 *buf = 0;
  64         else
  65         {
  66                 *(s + n - 6) = 0;
  67                 if (!pathtemp(buf, len, d, s, fdp))
  68                         *buf = 0;
  69         }
  70         return buf;
  71 }
  72
  73 extern char*
  74 mktemp(char* buf)
  75 {
  76         return temp(buf, NiL);
  77 }
  78
  79 extern int
  80 mkstemp(char* buf)
  81 {
  82         int     fd;
  83
  84         return *temp(buf, &fd) ? fd : -1;
  85 }