1 | /* $NetBSD: linux_mod.c,v 1.6 2015/12/03 02:51:01 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: linux_mod.c,v 1.6 2015/12/03 02:51:01 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_sysctl.h> |
49 | #include <compat/linux/common/linux_futex.h> |
50 | #include <compat/linux/common/linux_exec.h> |
51 | |
52 | #if defined(EXEC_ELF32) && ELFSIZE == 32 |
53 | # define MD1 ",exec_elf32" |
54 | #else |
55 | # define MD1 "" |
56 | #endif |
57 | #if defined(EXEC_ELF64) |
58 | # define MD2 ",exec_elf64" |
59 | #else |
60 | # define MD2 "" |
61 | #endif |
62 | #if defined(EXEC_AOUT) |
63 | # define MD3 ",exec_aout" |
64 | #else |
65 | # define MD3 "" |
66 | #endif |
67 | |
68 | MODULE(MODULE_CLASS_EXEC, compat_linux, "compat,compat_ossaudio,sysv_ipc" |
69 | MD1 MD2 MD3); |
70 | |
71 | static struct execsw linux_execsw[] = { |
72 | #if defined(EXEC_ELF32) && ELFSIZE == 32 |
73 | { |
74 | .es_hdrsz = sizeof (Elf32_Ehdr), |
75 | .es_makecmds = exec_elf32_makecmds, |
76 | .u = { |
77 | .elf_probe_func = linux_elf32_probe, |
78 | }, |
79 | .es_emul = &emul_linux, |
80 | .es_prio = EXECSW_PRIO_ANY, |
81 | .es_arglen = LINUX_ELF_AUX_ARGSIZ, |
82 | .es_copyargs = linux_elf32_copyargs, |
83 | .es_setregs = NULL, |
84 | .es_coredump = coredump_elf32, |
85 | .es_setup_stack = linux_exec_setup_stack, |
86 | }, |
87 | #elif defined(EXEC_ELF64) |
88 | { |
89 | .es_hdrsz = sizeof (Elf64_Ehdr), |
90 | .es_makecmds = exec_elf64_makecmds, |
91 | .u = { |
92 | .elf_probe_func = linux_elf64_probe, |
93 | }, |
94 | .es_emul = &emul_linux, |
95 | .es_prio = EXECSW_PRIO_ANY, |
96 | .es_arglen = LINUX_ELF_AUX_ARGSIZ, |
97 | .es_copyargs = linux_elf64_copyargs, |
98 | .es_setregs = NULL, |
99 | .es_coredump = coredump_elf64, |
100 | .es_setup_stack = linux_exec_setup_stack, |
101 | }, |
102 | #endif |
103 | #ifdef EXEC_AOUT |
104 | { |
105 | .es_hdrsz = LINUX_AOUT_HDR_SIZE, |
106 | .es_makecmds = exec_linux_aout_makecmds, |
107 | .u = { |
108 | .elf_probe_func = NULL, |
109 | }, |
110 | .es_emul = &emul_linux, |
111 | .es_prio = EXECSW_PRIO_LAST, |
112 | .es_arglen = LINUX_AOUT_AUX_ARGSIZ, |
113 | .es_copyargs = linux_aout_copyargs, |
114 | .es_setregs = NULL, |
115 | .es_coredump = coredump_netbsd, |
116 | .es_setup_stack = linux_exec_setup_stack, |
117 | }, |
118 | #endif |
119 | }; |
120 | |
121 | static int |
122 | compat_linux_modcmd(modcmd_t cmd, void *arg) |
123 | { |
124 | int error; |
125 | |
126 | switch (cmd) { |
127 | case MODULE_CMD_INIT: |
128 | linux_futex_init(); |
129 | linux_sysctl_init(); |
130 | error = exec_add(linux_execsw, |
131 | __arraycount(linux_execsw)); |
132 | if (error != 0) |
133 | linux_sysctl_fini(); |
134 | return error; |
135 | |
136 | case MODULE_CMD_FINI: |
137 | error = exec_remove(linux_execsw, |
138 | __arraycount(linux_execsw)); |
139 | if (error == 0) { |
140 | linux_sysctl_fini(); |
141 | linux_futex_fini(); |
142 | } |
143 | return error; |
144 | |
145 | default: |
146 | return ENOTTY; |
147 | } |
148 | } |
149 | |