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/* Copyright (C) 1991, 1994, 1995, 1996, 1997 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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#if defined (_AIX) && !defined (__GNUC__)
#pragma alloca
#endif
#if HAVE_CONFIG_H
# include <config.h>
#endif
#if _LIBC || HAVE_STDLIB_H
# include <stdlib.h>
#endif
#if _LIBC || HAVE_STRING_H
# include <string.h>
#endif
#if !__GNU_LIBRARY__ && !HAVE_STRCHR
# define strchr index
#endif
#ifndef _LIBC
# ifdef HAVE_ALLOCA_H
# include <alloca.h>
# else
# ifdef __GNUC__
# define alloca __builtin_alloca
# else
extern char *alloca ();
# endif /* __GNUC__ */
# endif /* HAVE_ALLOCA_H */
#endif /* _LIBC */
/* Put STRING, which is of the form "NAME=VALUE", in the environment. */
int
putenv (string)
const char *string;
{
const char *const name_end = strchr (string, '=');
if (name_end != NULL)
{
char *name = alloca (name_end - string + 1);
#ifdef _LIBC
*((char *) __mempcpy (name, string, name_end - string)) = '\0';
#else
memcpy (name, string, name_end - string);
name[name_end - string] = '\0';
#endif
return setenv (name, name_end + 1, 1);
}
unsetenv (string);
return 0;
}
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