95802bf803
this results in a few functions becoming static, and the SYSINITs being close to the code they are related to. setting up the dump device is with dumpsys() and kicking off the scheduler is with the scheduler. Mounting root is with the code that does it. Reviewed by: phk
176 lines
4.9 KiB
C
176 lines
4.9 KiB
C
/*
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* Copyright (c) 1989, 1993, 1995
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1995 Artisoft, Inc. All Rights Reserved.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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_conf.c 8.8 (Berkeley) 3/31/94
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* $Id: vfs_conf.c,v 1.17 1997/11/07 08:53:10 phk Exp $
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*/
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/*
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* PURPOSE: This file abstracts the root mounting interface from
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* the per file system semantics for handling mounts,
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* the overall intent of which is to move the BSD
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* internals dependence out of the FS code, both to
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* make the FS code more portable and to free up some
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* of the BSD internals so that they may more easily
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* be changed.
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*
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* NOTE1: Code is single entry/single exit to aid debugging
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* and conversion for kernel multithreading.
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*
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* NOTE2: Code notes lock state in headers on entry and exit
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* as an aid to conversion for kernel multithreading
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* on SMP reentrancy
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*/
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#include <sys/param.h> /* dev_t (types.h)*/
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#include <sys/kernel.h>
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#include <sys/systm.h> /* rootvp*/
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#include <sys/proc.h> /* curproc*/
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#include <sys/vnode.h> /* NULLVP*/
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#include <sys/mount.h> /* struct mount*/
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#include <sys/malloc.h> /* M_MOUNT*/
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/*
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* GLOBALS
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*/
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MALLOC_DEFINE(M_MOUNT, "mount", "vfs mount struct");
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/*
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* These define the root filesystem, device, and root filesystem type.
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*/
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struct mount *rootfs;
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struct vnode *rootvnode;
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char *mountrootfsname;
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/*
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* vfs_init() will set maxvfsconf
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* to the highest defined type number.
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*/
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int maxvfsconf;
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struct vfsconf *vfsconf;
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/*
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* Common root mount code shared by all filesystems
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*/
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#define ROOTNAME "root_device"
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/*
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* vfs_mountrootfs
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*
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* Common entry point for root mounts
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*
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* PARAMETERS:
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* fsname name of the filesystem
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*
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* RETURNS: 0 Success
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* !0 error number (errno.h)
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*
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* LOCK STATE:
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* ENTRY
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* <no locks held>
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* EXIT
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* <no locks held>
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*
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* NOTES:
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* This code is currently supported only for use for
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* the FFS file system type. This is a matter of
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* fixing the other file systems, not this code!
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*/
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static int
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vfs_mountrootfs(fsname)
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char *fsname;
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{
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struct mount *mp;
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int err = 0;
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struct proc *p = curproc; /* XXX */
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/*
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* New root mount structure
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*/
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err = vfs_rootmountalloc(fsname, ROOTNAME, &mp);
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if (err)
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return (err);
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mp->mnt_flag |= MNT_ROOTFS;
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/*
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* Attempt the mount
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*/
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err = VFS_MOUNT(mp, NULL, NULL, NULL, p);
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if (err)
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goto error_2;
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simple_lock(&mountlist_slock);
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/* Add fs to list of mounted file systems*/
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CIRCLEQ_INSERT_HEAD(&mountlist, mp, mnt_list);
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simple_unlock(&mountlist_slock);
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vfs_unbusy(mp, p);
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/* root mount, update system time from FS specific data*/
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inittodr(mp->mnt_time);
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goto success;
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error_2: /* mount error*/
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vfs_unbusy(mp, p);
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/* free mount struct before failing*/
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free( mp, M_MOUNT);
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success:
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return( err);
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}
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/* ARGSUSED*/
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static void xxx_vfs_mountroot __P((void *fsnamep));
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#ifdef BOOTP
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extern void bootpc_init __P((void));
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#endif
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static void
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xxx_vfs_mountroot(fsnamep)
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void *fsnamep;
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{
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/* XXX Add a separate SYSINIT entry */
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#ifdef BOOTP
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bootpc_init();
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#endif
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/* Mount the root file system. */
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if (vfs_mountrootfs(*((char **) fsnamep)))
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panic("cannot mount root");
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}
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SYSINIT(mountroot, SI_SUB_MOUNT_ROOT, SI_ORDER_FIRST, xxx_vfs_mountroot,
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&mountrootfsname)
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