lfs is now loadable as LKM
This commit is contained in:
jdolecek
parent
bf558e3b3e
commit
134b0b2c0f
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@ -1,7 +1,6 @@
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# $NetBSD: Makefile,v 1.2 1998/10/04 11:45:44 bouyer Exp $
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# $NetBSD: Makefile,v 1.3 2000/11/30 16:00:55 jdolecek Exp $
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# MISSING: lfs (loads, but needs syscalls installed)
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# ffs (untested, needs syscalls installed)
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SUBDIR= ext2fs mfs
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SUBDIR= ext2fs lfs mfs
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.include <bsd.subdir.mk>
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@ -1,4 +1,4 @@
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# $NetBSD: Makefile,v 1.5 1999/02/13 02:54:54 lukem Exp $
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# $NetBSD: Makefile,v 1.6 2000/11/30 16:00:56 jdolecek Exp $
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.include "../Makefile.inc"
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@ -8,7 +8,7 @@ MKMAN= no
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KMOD= lfs
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SRCS= lkminit_${KMOD}.c
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SRCS= lkminit_vfs.c
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SRCS+= lfs_vfsops.c lfs_vnops.c lfs_subr.c
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SRCS+= lfs_alloc.c lfs_balloc.c lfs_bio.c lfs_cksum.c lfs_debug.c
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SRCS+= lfs_inode.c lfs_segment.c lfs_syscalls.c
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@ -1,72 +0,0 @@
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/* $NetBSD: lkminit_lfs.c,v 1.4 2000/03/21 11:46:01 simonb Exp $ */
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/*-
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* Copyright (c) 1996 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Michael Graff <explorer@flame.org>.
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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 NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/mount.h>
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#include <sys/exec.h>
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#include <sys/lkm.h>
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#include <sys/file.h>
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#include <sys/errno.h>
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int lfs_lkmentry __P((struct lkm_table *, int, int));
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/*
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* This is the vfsops table for the file system in question
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*/
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extern struct vfsops lfs_vfsops;
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/*
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* declare the filesystem
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*/
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MOD_VFS("lfs", -1, &lfs_vfsops);
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/*
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* entry point
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*/
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int
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lfs_lkmentry(lkmtp, cmd, ver)
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struct lkm_table *lkmtp;
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int cmd;
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int ver;
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{
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DISPATCH(lkmtp, cmd, ver, lkm_nofunc, lkm_nofunc, lkm_nofunc)
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}
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@ -0,0 +1,180 @@
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/* $NetBSD: lkminit_vfs.c,v 1.1 2000/11/30 16:00:56 jdolecek Exp $ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* 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 NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/mount.h>
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#include <sys/exec.h>
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#include <sys/lkm.h>
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#include <sys/file.h>
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#include <sys/errno.h>
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#define LFS
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#include <sys/syscall.h>
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#include <sys/syscallargs.h>
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/* used for lfs syscal entry table */
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struct lfs_sysent {
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int sysno;
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struct sysent sysent;
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};
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int lfs_lkmentry __P((struct lkm_table *, int, int));
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static int lfs_load __P((struct lkm_table *, int));
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static int lfs_unload __P((struct lkm_table *, int));
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#define LFS_SYSENT_CNT 4
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const struct lfs_sysent lfs_sysents[LFS_SYSENT_CNT] = {
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{ SYS_lfs_bmapv,
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{ 3, sizeof(struct sys_lfs_bmapv_args), sys_lfs_bmapv } },
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{ SYS_lfs_markv,
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{ 3, sizeof(struct sys_lfs_markv_args), sys_lfs_markv } },
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{ SYS_lfs_segclean,
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{ 2, sizeof(struct sys_lfs_segclean_args), sys_lfs_segclean } },
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{ SYS_lfs_segwait,
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{ 2, sizeof(struct sys_lfs_segwait_args), sys_lfs_segwait } },
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};
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/*
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* This is the vfsops table for the file system in question
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*/
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extern struct vfsops lfs_vfsops;
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/*
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* declare the filesystem
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*/
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MOD_VFS("lfs", -1, &lfs_vfsops);
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/*
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* entry point
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*/
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int
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lfs_lkmentry(lkmtp, cmd, ver)
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struct lkm_table *lkmtp;
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int cmd;
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int ver;
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{
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int error;
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/*
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* Since we need to call lkmdispatch() first, we can't use
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* DISPATCH().
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*/
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if (ver != LKM_VERSION)
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return EINVAL; /* version mismatch */
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/* do this first, lkmdispatch() expects this to be already filled in */
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if (cmd == LKM_E_LOAD)
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lkmtp->private.lkm_any = (struct lkm_any *)&_module;
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if ((error = lkmdispatch(lkmtp, cmd)))
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return error;
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switch (cmd) {
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case LKM_E_LOAD:
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if ((error = lfs_load(lkmtp, cmd)) != 0)
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return error;
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break;
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case LKM_E_UNLOAD:
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if ((error = lfs_unload(lkmtp, cmd)) != 0)
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return error;
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break;
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case LKM_E_STAT:
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default:
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break;
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}
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return 0;
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}
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/*
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* Insert lfs sycalls entries into sysent[].
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*/
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static int
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lfs_load(lkmtp, cmd)
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struct lkm_table *lkmtp;
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int cmd;
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{
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int i;
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/* first check if the entries are empty */
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for(i=0; i < LFS_SYSENT_CNT; i++) {
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if (sysent[lfs_sysents[i].sysno].sy_call != sys_nosys) {
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printf("LKM lfs_load(): lfs syscall %d already used\n",
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lfs_sysents[i].sysno);
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return EEXIST;
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}
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}
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/* now, put in the lfs syscalls */
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for(i=0; i < LFS_SYSENT_CNT; i++) {
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sysent[lfs_sysents[i].sysno].sy_narg =
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lfs_sysents[i].sysent.sy_narg;
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sysent[lfs_sysents[i].sysno].sy_argsize =
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lfs_sysents[i].sysent.sy_argsize;
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sysent[lfs_sysents[i].sysno].sy_call =
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lfs_sysents[i].sysent.sy_call;
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}
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return 0;
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}
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/*
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* Remove lfs sycalls entries from sysent[].
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*/
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static int
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lfs_unload(lkmtp, cmd)
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struct lkm_table *lkmtp;
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int cmd;
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{
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int i;
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/* reset lfs syscall entries back to nosys */
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for(i=0; i < LFS_SYSENT_CNT; i++) {
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if (sysent[lfs_sysents[i].sysno].sy_call !=
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lfs_sysents[i].sysent.sy_call) {
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panic("LKM lfs_unload(): syscall %d not lfs syscall",
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lfs_sysents[i].sysno);
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}
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sysent[lfs_sysents[i].sysno].sy_narg = 0;
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sysent[lfs_sysents[i].sysno].sy_argsize = 0;
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sysent[lfs_sysents[i].sysno].sy_call = sys_nosys;
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}
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return 0;
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}
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