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      1 /*	$NetBSD: netbsd32_compat_13.c,v 1.28 2021/01/19 03:20:13 simonb Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1998, 2001 Matthew R. Green
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 __KERNEL_RCSID(0, "$NetBSD: netbsd32_compat_13.c,v 1.28 2021/01/19 03:20:13 simonb Exp $");
     31 
     32 #include <sys/param.h>
     33 #include <sys/systm.h>
     34 #include <sys/module.h>
     35 #include <sys/mount.h>
     36 #include <sys/proc.h>
     37 #include <sys/signal.h>
     38 #include <sys/signalvar.h>
     39 #include <sys/syscallargs.h>
     40 #include <sys/syscallvar.h>
     41 
     42 #include <compat/netbsd32/netbsd32.h>
     43 #include <compat/netbsd32/netbsd32_syscall.h>
     44 #include <compat/netbsd32/netbsd32_syscallargs.h>
     45 
     46 #include <compat/sys/stat.h>
     47 #include <compat/sys/signal.h>
     48 #include <compat/sys/signalvar.h>
     49 
     50 #include <compat/common/compat_sigaltstack.h>
     51 
     52 int
     53 compat_13_netbsd32_sigaltstack13(struct lwp *l, const struct compat_13_netbsd32_sigaltstack13_args *uap, register_t *retval)
     54 {
     55 	compat_sigaltstack(uap, netbsd32_sigaltstack13, SS_ONSTACK, SS_DISABLE);
     56 }
     57 
     58 
     59 int
     60 compat_13_netbsd32_sigprocmask(struct lwp *l, const struct compat_13_netbsd32_sigprocmask_args *uap, register_t *retval)
     61 {
     62 	/* {
     63 		syscallarg(int) how;
     64 		syscallarg(int) mask;
     65 	} */
     66 	sigset13_t ness, oess;
     67 	sigset_t nbss, obss;
     68 	struct proc *p = l->l_proc;
     69 	int error;
     70 
     71 	ness = SCARG(uap, mask);
     72 	native_sigset13_to_sigset(&ness, &nbss);
     73 	mutex_enter(p->p_lock);
     74 	error = sigprocmask1(l, SCARG(uap, how), &nbss, &obss);
     75 	mutex_exit(p->p_lock);
     76 	if (error)
     77 		return error;
     78 	native_sigset_to_sigset13(&obss, &oess);
     79 	*retval = oess;
     80 	return 0;
     81 }
     82 
     83 int
     84 compat_13_netbsd32_sigsuspend(struct lwp *l, const struct compat_13_netbsd32_sigsuspend_args *uap, register_t *retval)
     85 {
     86 	/* {
     87 		syscallarg(sigset13_t) mask;
     88 	} */
     89 	sigset13_t ess;
     90 	sigset_t bss;
     91 
     92 	ess = SCARG(uap, mask);
     93 	native_sigset13_to_sigset(&ess, &bss);
     94 	return sigsuspend1(l, &bss);
     95 }
     96 
     97 static struct syscall_package compat_netbsd32_13_syscalls[] = {
     98 	{ NETBSD32_SYS_compat_13_netbsd32_sigaltstack13, 0,
     99 	    (sy_call_t *)compat_13_netbsd32_sigaltstack13 },
    100 	{ NETBSD32_SYS_compat_13_sigprocmask13, 0,
    101 	    (sy_call_t *)compat_13_netbsd32_sigprocmask },
    102 	{ NETBSD32_SYS_compat_13_sigsuspend13, 0,
    103 	    (sy_call_t *)compat_13_netbsd32_sigsuspend },
    104 	{ 0, 0, NULL }
    105 };
    106 
    107 MODULE(MODULE_CLASS_EXEC, compat_netbsd32_13, "compat_13,compat_netbsd32_16");
    108 
    109 static int
    110 compat_netbsd32_13_modcmd(modcmd_t cmd, void *arg)
    111 {
    112 
    113 	switch (cmd) {
    114 	case MODULE_CMD_INIT:
    115 		netbsd32_machdep_md_13_init();
    116 		return syscall_establish(&emul_netbsd32,
    117 		    compat_netbsd32_13_syscalls);
    118 
    119 	case MODULE_CMD_FINI:
    120 		netbsd32_machdep_md_13_fini();
    121 		return syscall_disestablish(&emul_netbsd32,
    122 		    compat_netbsd32_13_syscalls);
    123 
    124 	default:
    125 		return ENOTTY;
    126 	}
    127 }
    128