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glibc  2.9
secure-getenv.c
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00001 /* Copyright (C) 1991, 1992, 1994, 1996, 2002 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 <stdlib.h>
00020 #include <unistd.h>
00021 
00022 /* Some programs and especially the libc itself have to be careful
00023    what values to accept from the environment.  This special version
00024    checks for SUID or SGID first before doing any work.  */
00025 char *
00026 __secure_getenv (name)
00027      const char *name;
00028 {
00029   return __libc_enable_secure ? NULL : getenv (name);
00030 }
00031 libc_hidden_def (__secure_getenv)