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      1 /*	$NetBSD: vfs_syscalls_90.c,v 1.1 2019/09/22 22:59:38 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2005, 2008 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Christos Zoulas.
      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 #include <sys/cdefs.h>
     32 __KERNEL_RCSID(0, "$NetBSD: vfs_syscalls_90.c,v 1.1 2019/09/22 22:59:38 christos Exp $");
     33 
     34 #if defined(_KERNEL_OPT)
     35 #include "opt_compat_netbsd.h"
     36 #endif
     37 
     38 #include <sys/param.h>
     39 #include <sys/systm.h>
     40 #include <sys/namei.h>
     41 #include <sys/filedesc.h>
     42 #include <sys/kernel.h>
     43 #include <sys/file.h>
     44 #include <sys/stat.h>
     45 #include <sys/socketvar.h>
     46 #include <sys/vnode.h>
     47 #include <sys/mount.h>
     48 #include <sys/proc.h>
     49 #include <sys/uio.h>
     50 #include <sys/dirent.h>
     51 #include <sys/malloc.h>
     52 #include <sys/kauth.h>
     53 #include <sys/vfs_syscalls.h>
     54 #include <sys/syscall.h>
     55 #include <sys/syscallvar.h>
     56 #include <sys/syscallargs.h>
     57 
     58 #include <compat/common/compat_mod.h>
     59 #include <compat/common/compat_util.h>
     60 #include <compat/sys/statvfs.h>
     61 
     62 static const struct syscall_package vfs_syscalls_90_syscalls[] = {
     63 	{ SYS_compat_90_getvfsstat, 0, (sy_call_t *)compat_90_sys_getvfsstat },
     64 	{ SYS_compat_90_statvfs1, 0, (sy_call_t *)compat_90_sys_statvfs1 },
     65 	{ SYS_compat_90_fstatvfs1, 0, (sy_call_t *)compat_90_sys_fstatvfs1 },
     66 	{ SYS_compat_90_fhstatvfs1, 0, (sy_call_t *)compat_90_sys_fhstatvfs1 },
     67 	{ 0,0, NULL }
     68 };
     69 
     70 
     71 int
     72 compat_90_sys_getvfsstat(struct lwp *l,
     73     const struct compat_90_sys_getvfsstat_args *uap, register_t *retval)
     74 {
     75 	/* {
     76 		syscallarg(struct statvfs90 *) buf;
     77 		syscallarg(size_t) bufsize;
     78 		syscallarg(int)	flags;
     79 	} */
     80 
     81 	return do_sys_getvfsstat(l, SCARG(uap, buf), SCARG(uap, bufsize),
     82 	    SCARG(uap, flags), statvfs_to_statvfs90_copy,
     83 	    sizeof(struct statvfs90), retval);
     84 }
     85 
     86 int
     87 compat_90_sys_statvfs1(struct lwp *l,
     88     const struct compat_90_sys_statvfs1_args *uap, register_t *retval)
     89 {
     90 	/* {
     91 		syscallarg(const char *) path;
     92 		syscallarg(struct statvfs90 *) buf;
     93 		syscallarg(int)	flags;
     94 	} */
     95 
     96 	struct statvfs *sb = STATVFSBUF_GET();
     97 	int error = do_sys_pstatvfs(l, SCARG(uap, path), SCARG(uap, flags), sb);
     98 
     99 	if (!error)
    100 		error = statvfs_to_statvfs90_copy(sb, SCARG(uap, buf),
    101 		    sizeof(struct statvfs90));
    102 
    103 	STATVFSBUF_PUT(sb);
    104 	return error;
    105 }
    106 
    107 int
    108 compat_90_sys_fstatvfs1(struct lwp *l,
    109     const struct compat_90_sys_fstatvfs1_args *uap, register_t *retval)
    110 {
    111 	/* {
    112 		syscallarg(int) fd;
    113 		syscallarg(struct statvfs90 *) buf;
    114 		syscallarg(int)	flags;
    115 	} */
    116 
    117 	struct statvfs *sb = STATVFSBUF_GET();
    118 	int error = do_sys_fstatvfs(l, SCARG(uap, fd), SCARG(uap, flags), sb);
    119 
    120 	if (!error)
    121 		error = statvfs_to_statvfs90_copy(sb, SCARG(uap, buf),
    122 		    sizeof(struct statvfs90));
    123 
    124 	STATVFSBUF_PUT(sb);
    125 	return error;
    126 }
    127 
    128 int
    129 compat_90_sys_fhstatvfs1(struct lwp *l,
    130     const struct compat_90_sys_fhstatvfs1_args *uap, register_t *retval)
    131 {
    132 	/* {
    133 		syscallarg(const void *) fhp;
    134 		syscallarg(size_t) fh_size;
    135 		syscallarg(struct statvfs90 *) buf;
    136 		syscallarg(int)	flags;
    137 	} */
    138 
    139 	struct statvfs *sb = STATVFSBUF_GET();
    140 	int error = do_fhstatvfs(l, SCARG(uap, fhp), SCARG(uap, fh_size),
    141 	    sb, SCARG(uap, flags));
    142 
    143 	if (!error)
    144 		error = statvfs_to_statvfs90_copy(sb, SCARG(uap, buf),
    145 		    sizeof(struct statvfs90));
    146 
    147 	STATVFSBUF_PUT(sb);
    148 	return error;
    149 }
    150 
    151 int
    152 vfs_syscalls_90_init(void)
    153 {
    154 
    155 	return syscall_establish(NULL, vfs_syscalls_90_syscalls);
    156 }
    157 
    158 int
    159 vfs_syscalls_90_fini(void)
    160 {
    161 
    162 	return syscall_disestablish(NULL, vfs_syscalls_90_syscalls);
    163 }
    164