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      1 /*	$NetBSD: compat_30_mod.c,v 1.3 2019/12/28 15:39:52 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_30_mod.c,v 1.3 2019/12/28 15:39:52 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 <dev/biovar.h>
     51 
     52 #include <compat/common/compat_util.h>
     53 #include <compat/common/compat_mod.h>
     54 
     55 int
     56 compat_30_init(void)
     57 {
     58 	int error = 0;
     59 
     60 	error = vfs_syscalls_30_init();
     61 	if (error != 0)
     62 		return error;
     63 
     64 	error = kern_time_30_init();
     65 	if (error != 0) {
     66 		vfs_syscalls_30_fini();
     67 		return error;
     68 	}
     69 	error = uipc_syscalls_30_init();
     70 	if (error != 0) {
     71 		kern_time_30_fini();
     72 		vfs_syscalls_30_fini();
     73 		return error;
     74 	}
     75 	bio_30_init();
     76 	vnd_30_init();
     77 	usb_30_init();
     78 
     79 	return error;
     80 }
     81 
     82 int
     83 compat_30_fini(void)
     84 {
     85 	int error = 0;
     86 
     87 	usb_30_fini();
     88 	vnd_30_fini();
     89 	bio_30_fini();
     90 
     91 	error = uipc_syscalls_30_fini();
     92 	if (error != 0)
     93 		goto err1;
     94 
     95 	error = kern_time_30_fini();
     96 	if (error != 0)
     97 		goto err2;
     98 
     99 	error = vfs_syscalls_30_fini();
    100 	if (error != 0)
    101 		goto err3;
    102 
    103 	return 0;
    104 
    105  err3:
    106 	kern_time_30_init();
    107  err2:
    108 	uipc_syscalls_30_init();
    109  err1:
    110 	bio_30_init();
    111 	vnd_30_init();
    112 	usb_30_init();
    113 
    114 	return error;
    115 }
    116 
    117 MODULE(MODULE_CLASS_EXEC, compat_30, "compat_util,compat_40");
    118 
    119 static int
    120 compat_30_modcmd(modcmd_t cmd, void *arg)
    121 {
    122 
    123 	switch (cmd) {
    124 	case MODULE_CMD_INIT:
    125 		return compat_30_init();
    126 	case MODULE_CMD_FINI:
    127 		return compat_30_fini();
    128 	default:
    129 		return ENOTTY;
    130 	}
    131 }
    132