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/* Copyright (C) 1991, 1992, 1994 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <ansidecl.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifndef HAVE_GNU_LD
#define __environ environ
#endif
/* Return the value of the environment variable NAME. */
char *
DEFUN(getenv, (name), register CONST char *name)
{
register CONST size_t len = strlen(name);
register char **ep;
if (__environ == NULL)
return NULL;
for (ep = __environ; *ep != NULL; ++ep)
if (!strncmp(*ep, name, len) && (*ep)[len] == '=')
return &(*ep)[len + 1];
return NULL;
}
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