169 lines
4.8 KiB
C
169 lines
4.8 KiB
C
/* $NetBSD: compat_sysctl_09_43.c,v 1.6 2020/03/26 13:39:29 pgoyette Exp $ */
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)vfs_syscalls.c 8.28 (Berkeley) 12/10/94
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: compat_sysctl_09_43.c,v 1.6 2020/03/26 13:39:29 pgoyette Exp $");
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#if defined(_KERNEL_OPT)
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#include "opt_compat_netbsd.h"
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/filedesc.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/malloc.h>
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#include <sys/sysctl.h>
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#include <sys/module.h>
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#include <sys/mount.h>
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#include <sys/syscall.h>
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#include <sys/syscallvar.h>
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#include <sys/syscallargs.h>
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#include <sys/vfs_syscalls.h>
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#include <compat/sys/mount.h>
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#include <compat/common/compat_mod.h>
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/*
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* sysctl helper routine for vfs.generic.conf lookups.
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*/
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#if defined(COMPAT_09) || defined(COMPAT_43) || defined(COMPAT_44)
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static int
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sysctl_vfs_generic_conf(SYSCTLFN_ARGS)
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{
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struct vfsconf vfc;
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struct sysctlnode node;
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struct vfsops *vfsp;
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u_int vfsnum;
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if (namelen != 1)
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return (ENOTDIR);
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vfsnum = name[0];
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if (vfsnum >= nmountcompatnames ||
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mountcompatnames[vfsnum] == NULL)
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return (EOPNOTSUPP);
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vfsp = vfs_getopsbyname(mountcompatnames[vfsnum]);
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if (vfsp == NULL)
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return (EOPNOTSUPP);
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vfc.vfc_vfsops = vfsp;
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strncpy(vfc.vfc_name, vfsp->vfs_name, sizeof(vfc.vfc_name));
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vfc.vfc_typenum = vfsnum;
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vfc.vfc_refcount = vfsp->vfs_refcount;
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vfc.vfc_flags = 0;
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vfc.vfc_mountroot = vfsp->vfs_mountroot;
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vfc.vfc_next = NULL;
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vfs_delref(vfsp);
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node = *rnode;
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node.sysctl_data = &vfc;
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return (sysctl_lookup(SYSCTLFN_CALL(&node)));
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}
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/*
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* Top level filesystem related information gathering.
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*/
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SYSCTL_SETUP(compat_sysctl_vfs, "Top-level filesystem info")
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{
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int error;
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error = sysctl_createv(clog, 0, NULL, NULL,
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CTLFLAG_PERMANENT,
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CTLTYPE_NODE, "generic",
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SYSCTL_DESCR("Non-specific vfs related information"),
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NULL, 0, NULL, 0,
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CTL_VFS, VFS_GENERIC, CTL_EOL);
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if (error == EEXIST)
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error = 0;
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if (error != 0)
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return;
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error = sysctl_createv(clog, 0, NULL, NULL,
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CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
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CTLTYPE_INT, "maxtypenum",
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SYSCTL_DESCR("Highest valid filesystem type number"),
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NULL, nmountcompatnames, NULL, 0,
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CTL_VFS, VFS_GENERIC, VFS_MAXTYPENUM, CTL_EOL);
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if (error == EEXIST)
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error = 0;
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if (error != 0)
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return;
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error = sysctl_createv(clog, 0, NULL, NULL,
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CTLFLAG_PERMANENT,
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CTLTYPE_STRUCT, "conf",
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SYSCTL_DESCR("Filesystem configuration information"),
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sysctl_vfs_generic_conf, 0, NULL,
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sizeof(struct vfsconf),
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CTL_VFS, VFS_GENERIC, VFS_CONF, CTL_EOL);
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}
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#endif
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int
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compat_sysctl_09_43_init(void)
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{
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return 0;
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}
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int
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compat_sysctl_09_43_fini(void)
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{
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return 0;
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}
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MODULE (MODULE_CLASS_EXEC, compat_sysctl_09_43, NULL);
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static int
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compat_sysctl_09_43_modcmd(modcmd_t cmd, void *arg)
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{
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switch (cmd) {
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case MODULE_CMD_INIT:
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return compat_sysctl_09_43_init();
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case MODULE_CMD_FINI:
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return compat_sysctl_09_43_fini();
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default:
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return ENOTTY;
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}
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}
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