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-rw-r--r--lib/unsetenv.c127
1 files changed, 0 insertions, 127 deletions
diff --git a/lib/unsetenv.c b/lib/unsetenv.c
deleted file mode 100644
index 5bd9ab493..000000000
--- a/lib/unsetenv.c
+++ /dev/null
@@ -1,127 +0,0 @@
-/* Copyright (C) 1992, 1995-2002, 2005-2015 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program 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 Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-/* Don't use __attribute__ __nonnull__ in this compilation unit. Otherwise gcc
- optimizes away the name == NULL test below. */
-#define _GL_ARG_NONNULL(params)
-
-#include <config.h>
-
-/* Specification. */
-#include <stdlib.h>
-
-#include <errno.h>
-#if !_LIBC
-# define __set_errno(ev) ((errno) = (ev))
-#endif
-
-#include <string.h>
-#include <unistd.h>
-
-#if !_LIBC
-# define __environ environ
-#endif
-
-#if _LIBC
-/* 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)
-#else
-# define LOCK
-# define UNLOCK
-#endif
-
-/* In the GNU C library we must keep the namespace clean. */
-#ifdef _LIBC
-# define unsetenv __unsetenv
-#endif
-
-#if _LIBC || !HAVE_UNSETENV
-
-int
-unsetenv (const char *name)
-{
- size_t len;
- char **ep;
-
- if (name == NULL || *name == '\0' || strchr (name, '=') != NULL)
- {
- __set_errno (EINVAL);
- return -1;
- }
-
- len = strlen (name);
-
- LOCK;
-
- ep = __environ;
- while (*ep != NULL)
- if (!strncmp (*ep, name, len) && (*ep)[len] == '=')
- {
- /* 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. */
- }
- else
- ++ep;
-
- UNLOCK;
-
- return 0;
-}
-
-#ifdef _LIBC
-# undef unsetenv
-weak_alias (__unsetenv, unsetenv)
-#endif
-
-#else /* HAVE_UNSETENV */
-
-# undef unsetenv
-# if !HAVE_DECL_UNSETENV
-# if VOID_UNSETENV
-extern void unsetenv (const char *);
-# else
-extern int unsetenv (const char *);
-# endif
-# endif
-
-/* Call the underlying unsetenv, in case there is hidden bookkeeping
- that needs updating beyond just modifying environ. */
-int
-rpl_unsetenv (const char *name)
-{
- int result = 0;
- if (!name || !*name || strchr (name, '='))
- {
- errno = EINVAL;
- return -1;
- }
- while (getenv (name))
-# if !VOID_UNSETENV
- result =
-# endif
- unsetenv (name);
- return result;
-}
-
-#endif /* HAVE_UNSETENV */