1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2002 Maxime Henrion <mux@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#ifndef _SYS_KENV_H_
30#define _SYS_KENV_H_
31
32/*
33 * Constants for the kenv(2) syscall
34 */
35#define KENV_GET 0
36#define KENV_SET 1
37#define KENV_UNSET 2
38#define KENV_DUMP 3
39#define KENV_DUMP_LOADER 4
40#define KENV_DUMP_STATIC 5
41
42#define KENV_MNAMELEN 128 /* Maximum name length (for the syscall) */
43#define KENV_MVALLEN 128 /* Maximum value length (for the syscall) */
44
45#ifdef _KERNEL
46/*
47 * Most of these variables should be const.
48 */
49extern bool dynamic_kenv;
50extern struct mtx kenv_lock;
51extern char *kern_envp;
52extern char *md_envp;
53extern char static_env[];
54extern char static_hints[]; /* by config for now */
55
56extern char **kenvp;
57#endif /* _KERNEL */
58
59#endif /* !_SYS_KENV_H_ */