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      1 /*	$NetBSD: compat_09_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_09_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 #include <sys/compat_stub.h>
     50 
     51 #include <compat/common/compat_util.h>
     52 #include <compat/common/compat_mod.h>
     53 
     54 
     55 static int saved_pgid_mask;
     56 
     57 int
     58 compat_09_init(void)
     59 {
     60 
     61 	kern_info_09_init();
     62 	saved_pgid_mask = kern_sig_43_pgid_mask;
     63 	kern_sig_43_pgid_mask = 0xffff;
     64 	return 0;
     65 }
     66 
     67 int
     68 compat_09_fini(void)
     69 {
     70 
     71 	kern_info_09_fini();
     72 	kern_sig_43_pgid_mask = saved_pgid_mask;
     73 	return 0;
     74 }
     75 
     76 MODULE(MODULE_CLASS_EXEC, compat_09,
     77     "compat_10,compat_util,compat_sysctl_09_43");
     78 
     79 static int
     80 compat_09_modcmd(modcmd_t cmd, void *arg)
     81 {
     82 
     83 	switch (cmd) {
     84 	case MODULE_CMD_INIT:
     85 		return compat_09_init();
     86 	case MODULE_CMD_FINI:
     87 		return compat_09_fini();
     88 	default:
     89 		return ENOTTY;
     90 	}
     91 }
     92