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glibc  2.9
tst-tmpnam.c
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00001 /* Copyright (C) 1998 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <stdio.h>
00020 #include <stdlib.h>
00021 #include <string.h>
00022 
00023 int
00024 main (void)
00025 {
00026   const char *name;
00027   int retval = 0;
00028 
00029   /* Set TMPDIR to a value other than the traditional /tmp.  */
00030   setenv ("TMPDIR", "/usr", 1);
00031 
00032   name = tmpnam (NULL);
00033 
00034   printf ("name = %s\n", name);
00035 
00036   /* Make sure the name is not based on the value in TMPDIR.  */
00037   if (strncmp (name, "/usr", 4) == 0)
00038     {
00039       puts ("error: `tmpnam' used TMPDIR value");
00040       retval = 1;
00041     }
00042 
00043   /* Test that it is in the directory denoted by P_tmpdir.  */
00044   if (strncmp (name, P_tmpdir, sizeof (P_tmpdir) - 1) != 0)
00045     {
00046       puts ("error: `tmpnam' return value not in P_tmpdir directory");
00047       retval = 1;
00048     }
00049 
00050   return retval;
00051 }