X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fputenv.c;h=3c0f7ead3303bf0bd14ef334bcdd039f0647dc5c;hb=ef3f971ddf9b91cc6ea3af6e46532ea6b804b9ce;hp=0602e44e327374759a85839b87fea6304d8f5e04;hpb=17ec5562e3a7151207c4be08958b380bc8e601b3;p=gnulib.git

diff --git a/lib/putenv.c b/lib/putenv.c
index 0602e44e3..3c0f7ead3 100644
--- a/lib/putenv.c
+++ b/lib/putenv.c
@@ -1,12 +1,12 @@
-/* Copyright (C) 1991, 1994, 1997, 1998, 2000, 2003, 2004, 2005, 2006, 2007
-   Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1994, 1997-1998, 2000, 2003-2012 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,
@@ -15,16 +15,12 @@
    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/>.  */
 
 #include <config.h>
 
-/* undef putenv here, because some (e.g., Solaris 10) declare putenv in
-   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).  */
-#undef putenv
-int rpl_putenv (char const *);
+/* Specification.  */
+#include <stdlib.h>
 
 #include <stddef.h>
 
@@ -35,22 +31,23 @@ int rpl_putenv (char const *);
 # define __set_errno(ev) ((errno) = (ev))
 #endif
 
-#include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 
-#if HAVE_GNU_LD
-# define environ __environ
-#else
+#if _LIBC
+# if HAVE_GNU_LD
+#  define environ __environ
+# else
 extern char **environ;
+# endif
 #endif
 
 #if _LIBC
-/* This lock protects against simultaneous modifications of `environ'.  */
+/* 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
@@ -76,13 +73,13 @@ _unsetenv (const char *name)
   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;
@@ -94,9 +91,9 @@ _unsetenv (const char *name)
 
 
 /* Put STRING, which is of the form "NAME=VALUE", in the environment.
-   If STRING contains no `=', then remove STRING from 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;
@@ -111,7 +108,7 @@ rpl_putenv (const char *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;
@@ -121,18 +118,17 @@ rpl_putenv (const char *string)
       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;
 }