Home | History | Annotate | Line # | Download | only in common 
      1 /*	$NetBSD: vm_12.c,v 1.21 2019/01/27 02:08:39 pgoyette Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997 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: vm_12.c,v 1.21 2019/01/27 02:08:39 pgoyette Exp $");
     31 
     32 #if defined(_KERNEL_OPT)
     33 #include "opt_compat_netbsd.h"
     34 #endif
     35 
     36 #include <sys/param.h>
     37 #include <sys/systm.h>
     38 #include <sys/syscall.h>
     39 #include <sys/syscallvar.h>
     40 #include <sys/syscallargs.h>
     41 
     42 #include <sys/swap.h>
     43 #include <sys/mman.h>
     44 
     45 #include <compat/common/compat_mod.h>
     46 
     47 static const struct syscall_package vm_12_syscalls[] = {
     48 	{ SYS_compat_12_msync, 0, (sy_call_t *)compat_12_sys_msync },
     49 	{ SYS_compat_12_oswapon, 0, (sy_call_t *)compat_12_sys_swapon },
     50 	{ 0, 0, NULL }
     51 };
     52 
     53 int
     54 compat_12_sys_swapon(struct lwp *l,
     55     const struct compat_12_sys_swapon_args *uap, register_t *retval)
     56 {
     57 	/* {
     58 		syscallarg(const char *) name;
     59 	} */
     60 	struct sys_swapctl_args ua;
     61 
     62 	SCARG(&ua, cmd) = SWAP_ON;
     63 	/*XXXUNCONST*/
     64 	SCARG(&ua, arg) = __UNCONST(SCARG(uap, name));
     65 	SCARG(&ua, misc) = 0;	/* priority */
     66 	return (sys_swapctl(l, &ua, retval));
     67 }
     68 
     69 int
     70 compat_12_sys_msync(struct lwp *l,
     71     const struct compat_12_sys_msync_args *uap, register_t *retval)
     72 {
     73 	/* {
     74 		syscallarg(void *) addr;
     75 		syscallarg(size_t) len;
     76 	} */
     77 	struct sys___msync13_args ua;
     78 
     79 	SCARG(&ua, addr) = SCARG(uap, addr);
     80 	SCARG(&ua, len) = SCARG(uap, len);
     81 	SCARG(&ua, flags) = MS_SYNC | MS_INVALIDATE;
     82 	return (sys___msync13(l, &ua, retval));
     83 }
     84 
     85 int
     86 vm_12_init(void)
     87 {
     88 
     89 	return syscall_establish(NULL, vm_12_syscalls);
     90 }
     91 
     92 int
     93 vm_12_fini(void)
     94 {
     95 
     96 	return syscall_disestablish(NULL, vm_12_syscalls);
     97 }
     98