diff options
Diffstat (limited to 'pkgtools/libnbcompat/files/__unsetenv13.c')
| -rw-r--r-- | pkgtools/libnbcompat/files/__unsetenv13.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/pkgtools/libnbcompat/files/__unsetenv13.c b/pkgtools/libnbcompat/files/__unsetenv13.c new file mode 100644 index 00000000000..527d6a9464a --- /dev/null +++ b/pkgtools/libnbcompat/files/__unsetenv13.c @@ -0,0 +1,124 @@ +/* $NetBSD: __unsetenv13.c,v 1.1 2004/08/23 03:32:12 jlam Exp $ */ + +/* + * Copyright (c) 1987, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <nbcompat.h> +#include <nbcompat/cdefs.h> +#if defined(LIBC_SCCS) && !defined(lint) +#if 0 +static char sccsid[] = "from: @(#)setenv.c 8.1 (Berkeley) 6/4/93"; +#else +__RCSID("$NetBSD: __unsetenv13.c,v 1.1 2004/08/23 03:32:12 jlam Exp $"); +#endif +#endif /* LIBC_SCCS and not lint */ + +#if 0 +#include "namespace.h" +#endif + +#include <nbcompat/assert.h> +#if HAVE_ERRNO_H +#include <errno.h> +#endif +#include <nbcompat/stdlib.h> +#include <nbcompat/string.h> +#if 0 +#include "local.h" +#include "reentrant.h" +#endif + +char *__findenv __P((const char *, int *)); + +#if 0 +#ifdef __weak_alias +#ifdef __LIBC12_SOURCE__ +__weak_alias(unsetenv,_unsetenv) +#endif +#endif +#endif + +#if 0 +#ifdef _REENTRANT +extern rwlock_t __environ_lock; +#endif +#endif + +#if 0 +#ifdef __LIBC12_SOURCE__ +__warn_references(unsetenv, + "warning: reference to compatibility unsetenv();" + " include <stdlib.h> for correct reference") +#endif +#endif + +extern char **environ; + +#ifndef rwlock_wrlock +#define rwlock_wrlock(lock) ((void)0) +#endif +#ifndef rwlock_unlock +#define rwlock_unlock(lock) ((void)0) +#endif + +/* + * unsetenv(name) -- + * Delete environmental variable "name". + */ +#ifdef __LIBC12_SOURCE__ +void +#else +int +#endif +unsetenv(name) + const char *name; +{ + char **p; + int offset; + + _DIAGASSERT(name != NULL); + +#ifndef __LIBC12_SOURCE__ + if (name == NULL || *name == '\0' || strchr(name, '=') != NULL) { + errno = EINVAL; + return (-1); + } +#endif + + rwlock_wrlock(&__environ_lock); + while (__findenv(name, &offset)) /* if set multiple times */ + for (p = &environ[offset];; ++p) + if (!(*p = *(p + 1))) + break; + rwlock_unlock(&__environ_lock); + +#ifndef __LIBC12_SOURCE__ + return (0); +#endif +} |