154 lines
4.3 KiB
C
154 lines
4.3 KiB
C
/*
|
|
* Copyright (c) 1989, 1993, 1995
|
|
* The Regents of the University of California. All rights reserved.
|
|
* Copyright (c) 1995 Artisoft, Inc. All Rights Reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)vfs_conf.c 8.8 (Berkeley) 3/31/94
|
|
* $Id$
|
|
*/
|
|
|
|
/*
|
|
* PURPOSE: This file abstracts the root mounting interface from
|
|
* the per file system semantics for handling mounts,
|
|
* the overall intent of which is to move the BSD
|
|
* internals dependence out of the FS code, both to
|
|
* make the FS code more portable and to free up some
|
|
* of the BSD internals so that they may more easily
|
|
* be changed.
|
|
*
|
|
* NOTE1: Code is single entry/single exit to aid debugging
|
|
* and conversion for kernel multithreading.
|
|
*
|
|
* NOTE2: Code notes lock state in headers on entry and exit
|
|
* as an aid to conversion for kernel multithreading
|
|
* on SMP reentrancy
|
|
*/
|
|
#include <sys/param.h> /* dev_t (types.h)*/
|
|
#include <sys/systm.h> /* rootvp*/
|
|
#include <sys/proc.h> /* curproc*/
|
|
#include <sys/vnode.h> /* NULLVP*/
|
|
#include <sys/mount.h> /* struct mount*/
|
|
#include <sys/malloc.h> /* M_MOUNT*/
|
|
|
|
/*
|
|
* GLOBALS
|
|
*/
|
|
|
|
/*
|
|
* These define the root filesystem, device, and root filesystem type.
|
|
*/
|
|
struct mount *rootfs;
|
|
struct vnode *rootvnode;
|
|
char *mountrootfsname;
|
|
|
|
/*
|
|
* vfs_init() will set maxvfsconf
|
|
* to the highest defined type number.
|
|
*/
|
|
int maxvfsconf;
|
|
struct vfsconf *vfsconf;
|
|
|
|
/*
|
|
* Common root mount code shared by all filesystems
|
|
*/
|
|
#define ROOTNAME "root_device"
|
|
|
|
/*
|
|
* vfs_mountrootfs
|
|
*
|
|
* Common entry point for root mounts
|
|
*
|
|
* PARAMETERS:
|
|
* fsname name of the filesystem
|
|
*
|
|
* RETURNS: 0 Success
|
|
* !0 error number (errno.h)
|
|
*
|
|
* LOCK STATE:
|
|
* ENTRY
|
|
* <no locks held>
|
|
* EXIT
|
|
* <no locks held>
|
|
*
|
|
* NOTES:
|
|
* This code is currently supported only for use for
|
|
* the FFS file system type. This is a matter of
|
|
* fixing the other file systems, not this code!
|
|
*/
|
|
int
|
|
vfs_mountrootfs(fsname)
|
|
char *fsname;
|
|
{
|
|
struct mount *mp;
|
|
int err = 0;
|
|
struct proc *p = curproc; /* XXX */
|
|
|
|
/*
|
|
* New root mount structure
|
|
*/
|
|
err = vfs_rootmountalloc(fsname, ROOTNAME, &mp);
|
|
if (err)
|
|
return (err);
|
|
mp->mnt_flag |= MNT_ROOTFS;
|
|
|
|
/*
|
|
* Attempt the mount
|
|
*/
|
|
err = VFS_MOUNT(mp, NULL, NULL, NULL, p);
|
|
if (err)
|
|
goto error_2;
|
|
|
|
simple_lock(&mountlist_slock);
|
|
/* Add fs to list of mounted file systems*/
|
|
CIRCLEQ_INSERT_TAIL(&mountlist, mp, mnt_list);
|
|
simple_unlock(&mountlist_slock);
|
|
|
|
vfs_unbusy(mp, p);
|
|
|
|
/* root mount, update system time from FS specific data*/
|
|
inittodr(mp->mnt_time);
|
|
|
|
goto success;
|
|
|
|
|
|
error_2: /* mount error*/
|
|
|
|
vfs_unbusy(mp, p);
|
|
|
|
error_1: /* lock error*/
|
|
|
|
/* free mount struct before failing*/
|
|
free( mp, M_MOUNT);
|
|
|
|
success:
|
|
return( err);
|
|
}
|