| 1 | /* $NetBSD: ulfs_snapshot.c,v 1.3 2015/11/14 22:03:54 pgoyette Exp $ */ |
| 2 | /* from ffs_snapshot.c,v 1.122 2013/05/07 09:40:54 hannken Exp */ |
| 3 | |
| 4 | /* |
| 5 | * Copyright 2000 Marshall Kirk McKusick. All Rights Reserved. |
| 6 | * |
| 7 | * Further information about snapshots can be obtained from: |
| 8 | * |
| 9 | * Marshall Kirk McKusick http://www.mckusick.com/softdep/ |
| 10 | * 1614 Oxford Street mckusick@mckusick.com |
| 11 | * Berkeley, CA 94709-1608 +1-510-843-9542 |
| 12 | * USA |
| 13 | * |
| 14 | * Redistribution and use in source and binary forms, with or without |
| 15 | * modification, are permitted provided that the following conditions |
| 16 | * are met: |
| 17 | * |
| 18 | * 1. Redistributions of source code must retain the above copyright |
| 19 | * notice, this list of conditions and the following disclaimer. |
| 20 | * 2. Redistributions in binary form must reproduce the above copyright |
| 21 | * notice, this list of conditions and the following disclaimer in the |
| 22 | * documentation and/or other materials provided with the distribution. |
| 23 | * |
| 24 | * THIS SOFTWARE IS PROVIDED BY MARSHALL KIRK MCKUSICK ``AS IS'' AND ANY |
| 25 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 26 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 27 | * DISCLAIMED. IN NO EVENT SHALL MARSHALL KIRK MCKUSICK BE LIABLE FOR |
| 28 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 34 | * SUCH DAMAGE. |
| 35 | * |
| 36 | * @(#)ffs_snapshot.c 8.11 (McKusick) 7/23/00 |
| 37 | * |
| 38 | * from FreeBSD: ffs_snapshot.c,v 1.79 2004/02/13 02:02:06 kuriyama Exp |
| 39 | */ |
| 40 | |
| 41 | #include <sys/cdefs.h> |
| 42 | __KERNEL_RCSID(0, "$NetBSD: ulfs_snapshot.c,v 1.3 2015/11/14 22:03:54 pgoyette Exp $" ); |
| 43 | |
| 44 | #if defined(_KERNEL_OPT) |
| 45 | #include "opt_lfs.h" |
| 46 | #endif |
| 47 | |
| 48 | #include <sys/param.h> |
| 49 | #include <sys/kernel.h> |
| 50 | #include <sys/systm.h> |
| 51 | #include <sys/conf.h> |
| 52 | #include <sys/buf.h> |
| 53 | #include <sys/proc.h> |
| 54 | #include <sys/namei.h> |
| 55 | #include <sys/sched.h> |
| 56 | #include <sys/stat.h> |
| 57 | #include <sys/malloc.h> |
| 58 | #include <sys/mount.h> |
| 59 | #include <sys/resource.h> |
| 60 | #include <sys/resourcevar.h> |
| 61 | #include <sys/vnode.h> |
| 62 | #include <sys/kauth.h> |
| 63 | #include <sys/fstrans.h> |
| 64 | |
| 65 | #include <miscfs/specfs/specdev.h> |
| 66 | |
| 67 | #include <ufs/lfs/ulfs_quotacommon.h> |
| 68 | #include <ufs/lfs/ulfsmount.h> |
| 69 | #include <ufs/lfs/ulfs_inode.h> |
| 70 | #include <ufs/lfs/ulfs_extern.h> |
| 71 | #include <ufs/lfs/ulfs_bswap.h> |
| 72 | |
| 73 | #include <ufs/lfs/lfs.h> |
| 74 | #include <ufs/lfs/lfs_extern.h> |
| 75 | |
| 76 | #include <uvm/uvm.h> |
| 77 | |
| 78 | /* |
| 79 | * Decrement extra reference on snapshot when last name is removed. |
| 80 | * It will not be freed until the last open reference goes away. |
| 81 | */ |
| 82 | void |
| 83 | ulfs_snapgone(struct inode *ip) |
| 84 | { |
| 85 | (void)ip; |
| 86 | /* just panic */ |
| 87 | panic("reached ulfs_snapgone\n" ); |
| 88 | } |
| 89 | |