-/* Copyright (C) 1991, 1994, 1997, 1998, 2000, 2003, 2004, 2005 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1994, 1997-1998, 2000, 2003-2011 Free Software
+ Foundation, Inc.
NOTE: The canonical source of this file is maintained with the GNU C
Library. Bugs can be reported to bug-glibc@prep.ai.mit.edu.
- This program is free software; you can redistribute it and/or modify it
+ This program is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2, or (at your option) any
+ Free Software Foundation; either version 3 of the License, or any
later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
+
+/* Specification. */
+#include <stdlib.h>
#include <stddef.h>
# define __set_errno(ev) ((errno) = (ev))
#endif
-/* Don't include stdlib.h because some (e.g., Solaris 7) declare putenv
- with a non-const argument. That would conflict with the declaration of
- rpl_putenv below (due to the #define putenv rpl_putenv from config.h). */
-
-void *malloc ();
-void free ();
-
#include <string.h>
-
#include <unistd.h>
#if HAVE_GNU_LD
/* This lock protects against simultaneous modifications of `environ'. */
# include <bits/libc-lock.h>
__libc_lock_define_initialized (static, envlock)
-# define LOCK __libc_lock_lock (envlock)
-# define UNLOCK __libc_lock_unlock (envlock)
+# define LOCK __libc_lock_lock (envlock)
+# define UNLOCK __libc_lock_unlock (envlock)
#else
# define LOCK
# define UNLOCK
#endif
static int
-unsetenv (const char *name)
+_unsetenv (const char *name)
{
size_t len;
char **ep;
while (*ep != NULL)
if (!strncmp (*ep, name, len) && (*ep)[len] == '=')
{
- /* Found it. Remove this pointer by moving later ones back. */
- char **dp = ep;
+ /* Found it. Remove this pointer by moving later ones back. */
+ char **dp = ep;
- do
- dp[0] = dp[1];
- while (*dp++);
- /* Continue the loop in case NAME appears again. */
+ do
+ dp[0] = dp[1];
+ while (*dp++);
+ /* Continue the loop in case NAME appears again. */
}
else
++ep;
/* Put STRING, which is of the form "NAME=VALUE", in the environment.
If STRING contains no `=', then remove STRING from the environment. */
int
-rpl_putenv (const char *string)
+putenv (char *string)
{
const char *const name_end = strchr (string, '=');
register size_t size;
if (name_end == NULL)
{
/* Remove the variable from the environment. */
- return unsetenv (string);
+ return _unsetenv (string);
}
size = 0;
for (ep = environ; *ep != NULL; ++ep)
if (!strncmp (*ep, string, name_end - string) &&
- (*ep)[name_end - string] == '=')
+ (*ep)[name_end - string] == '=')
break;
else
++size;
static char **last_environ = NULL;
char **new_environ = (char **) malloc ((size + 2) * sizeof (char *));
if (new_environ == NULL)
- return -1;
+ return -1;
(void) memcpy ((void *) new_environ, (void *) environ,
- size * sizeof (char *));
+ size * sizeof (char *));
new_environ[size] = (char *) string;
new_environ[size + 1] = NULL;
- if (last_environ != NULL)
- free (last_environ);
+ free (last_environ);
last_environ = new_environ;
environ = new_environ;
}
else
- *ep = (char *) string;
+ *ep = string;
return 0;
}