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      1 /*	$NetBSD: compat_12_mod.c,v 1.2 2019/01/27 02:08:39 pgoyette Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2018 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software developed for The NetBSD Foundation
      8  * by Paul Goyette
      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 /*
     33  * Linkage for the compat module: spaghetti.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 __KERNEL_RCSID(0, "$NetBSD: compat_12_mod.c,v 1.2 2019/01/27 02:08:39 pgoyette Exp $");
     38 
     39 #if defined(_KERNEL_OPT)
     40 #include "opt_compat_netbsd.h"
     41 #endif
     42 
     43 #include <sys/systm.h>
     44 #include <sys/module.h>
     45 #include <sys/sysctl.h>
     46 #include <sys/syscall.h>
     47 #include <sys/syscallvar.h>
     48 #include <sys/syscallargs.h>
     49 
     50 #include <compat/common/compat_util.h>
     51 #include <compat/common/compat_mod.h>
     52 
     53 int
     54 compat_12_init(void)
     55 {
     56 	int error;
     57 
     58 	error = kern_xxx_12_init();
     59 	if (error != 0)
     60 		return error;
     61 
     62 	error = vm_12_init();
     63 	if (error != 0) {
     64 		kern_xxx_12_fini();
     65 		return error;
     66 	}
     67 
     68 	error = vfs_syscalls_12_init();
     69 	if (error != 0) {
     70 		vm_12_fini();
     71 		kern_xxx_12_fini();
     72 		return error;
     73 	}
     74 
     75 	return 0;
     76 }
     77 
     78 int
     79 compat_12_fini(void)
     80 {
     81 	int error;
     82 
     83 	error = vfs_syscalls_12_fini();
     84 	if (error != 0)
     85 		return error;
     86 
     87 	error = vm_12_fini();
     88 	if (error != 0) {
     89 		vfs_syscalls_12_init();
     90 		return error;
     91 	}
     92 
     93 	error = kern_xxx_12_fini();
     94 	if (error != 0) {
     95 		vm_12_init();
     96 		vfs_syscalls_12_init();
     97 		return error;
     98 	}
     99 
    100 	return 0;
    101 }
    102 
    103 MODULE(MODULE_CLASS_EXEC, compat_12, "compat_13");
    104 
    105 static int
    106 compat_12_modcmd(modcmd_t cmd, void *arg)
    107 {
    108 
    109 	switch (cmd) {
    110 	case MODULE_CMD_INIT:
    111 		return compat_12_init();
    112 	case MODULE_CMD_FINI:
    113 		return compat_12_fini();
    114 	default:
    115 		return ENOTTY;
    116 	}
    117 }
    118