1/* $NetBSD: linux32_mod.c,v 1.7 2015/12/03 23:51:24 pgoyette Exp $ */
2
3/*-
4 * Copyright (c) 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software developed for The NetBSD Foundation
8 * by Andrew Doran.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: linux32_mod.c,v 1.7 2015/12/03 23:51:24 pgoyette Exp $");
34
35#ifdef _KERNEL_OPT
36#include "opt_execfmt.h"
37#endif
38
39#ifndef ELFSIZE
40#define ELFSIZE ARCH_ELFSIZE
41#endif
42
43#include <sys/param.h>
44#include <sys/module.h>
45#include <sys/exec.h>
46#include <sys/signalvar.h>
47
48#include <compat/linux/common/linux_exec.h>
49
50#include <compat/linux32/common/linux32_sysctl.h>
51#include <compat/linux32/common/linux32_exec.h>
52
53#if defined(EXEC_ELF32)
54# define MD1 ",exec_elf32,compat_netbsd32,compat_netbsd32_sysvipc"
55#else
56# define MD1 ""
57#endif
58
59MODULE(MODULE_CLASS_EXEC, compat_linux32, "compat_linux" MD1);
60
61static struct execsw linux32_execsw[] = {
62#if defined(EXEC_ELF32)
63 {
64 .es_hdrsz = sizeof (Elf32_Ehdr),
65 .es_makecmds = exec_elf32_makecmds,
66 .u = {
67 .elf_probe_func = linux32_elf32_probe,
68 },
69 .es_emul = &emul_linux32,
70 .es_prio = EXECSW_PRIO_ANY,
71 .es_arglen = LINUX32_ELF_AUX_ARGSIZ,
72 .es_copyargs = linux32_elf32_copyargs,
73 .es_setregs = NULL,
74 .es_coredump = coredump_elf32,
75 .es_setup_stack = linux_exec_setup_stack,
76 },
77#endif
78};
79
80static int
81compat_linux32_modcmd(modcmd_t cmd, void *arg)
82{
83 int error;
84
85 switch (cmd) {
86 case MODULE_CMD_INIT:
87 linux32_sysctl_init();
88 error = exec_add(linux32_execsw,
89 __arraycount(linux32_execsw));
90 if (error != 0)
91 linux32_sysctl_fini();
92 return error;
93
94 case MODULE_CMD_FINI:
95 error = exec_remove(linux32_execsw,
96 __arraycount(linux32_execsw));
97 if (error == 0)
98 linux32_sysctl_fini();
99 return error;
100
101 default:
102 return ENOTTY;
103 }
104}
105