sys/compat/netbsd32/netbsd32_mod.c

   1 /*      $NetBSD$        */
   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, "$NetBSD$");
  34
  35 #ifdef _KERNEL_OPT
  36 #include "opt_execfmt.h"
  37 #define MODDEPS "compat"
  38 #else
  39 #define MODDEPS "compat,ksem"
  40 #endif
  41
  42 #ifndef ELFSIZE
  43 #define ELFSIZE ARCH_ELFSIZE
  44 #endif
  45
  46 #include <sys/param.h>
  47 #include <sys/module.h>
  48 #include <sys/exec.h>
  49 #include <sys/exec_elf.h>
  50
  51 #include <compat/netbsd32/netbsd32_sysctl.h>
  52 #include <compat/netbsd32/netbsd32_exec.h>
  53
  54 #define ELF32_AUXSIZE (howmany(ELF_AUX_ENTRIES * sizeof(Aux32Info), \
  55     sizeof(Elf32_Addr)) + MAXPATHLEN + ALIGN(1))
  56
  57 MODULE(MODULE_CLASS_MISC, compat_netbsd32, MODDEPS);
  58
  59 static struct execsw netbsd32_execsw[] = {
  60 #ifdef EXEC_AOUT
  61         { sizeof(struct netbsd32_exec),
  62           exec_netbsd32_makecmds,
  63           { NULL },
  64           &emul_netbsd32,
  65           EXECSW_PRIO_FIRST,
  66           0,
  67           netbsd32_copyargs,
  68           NULL,
  69           coredump_netbsd32,
  70           exec_setup_stack },
  71 #endif
  72 #ifdef EXEC_ELF32
  73         { sizeof (Elf32_Ehdr),
  74           exec_elf32_makecmds,
  75           { netbsd32_elf32_probe },
  76           &emul_netbsd32,
  77           EXECSW_PRIO_FIRST,
  78           ELF32_AUXSIZE,
  79           netbsd32_elf32_copyargs,
  80           NULL,
  81           coredump_elf32,
  82           exec_setup_stack },           /* XXX XXX XXX */
  83 #endif
  84 };
  85
  86 static int
  87 compat_netbsd32_modcmd(modcmd_t cmd, void *arg)
  88 {
  89         int error;
  90
  91         switch (cmd) {
  92         case MODULE_CMD_INIT:
  93                 netbsd32_sysctl_init();
  94                 error = exec_add(netbsd32_execsw,
  95                     __arraycount(netbsd32_execsw));
  96                 if (error != 0)
  97                         netbsd32_sysctl_fini();
  98                 return error;
  99
 100         case MODULE_CMD_FINI:
 101                 error = exec_remove(netbsd32_execsw,
 102                     __arraycount(netbsd32_execsw));
 103                 if (error == 0)
 104                         netbsd32_sysctl_fini();
 105                 return error;
 106
 107         default:
 108                 return ENOTTY;
 109         }
 110 }