| 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 | |
| 59 | MODULE(MODULE_CLASS_EXEC, compat_linux32, "compat_linux" MD1); |
| 60 | |
| 61 | static 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 | |
| 80 | static int |
| 81 | compat_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 | |