From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- sysdeps/generic/getenv.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 sysdeps/generic/getenv.c (limited to 'sysdeps/generic/getenv.c') diff --git a/sysdeps/generic/getenv.c b/sysdeps/generic/getenv.c new file mode 100644 index 0000000000..d4099a9733 --- /dev/null +++ b/sysdeps/generic/getenv.c @@ -0,0 +1,44 @@ +/* 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 +#include +#include +#include +#include + +#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; +} -- cgit 1.4.1