dead_vfsops.c revision 1.2.10.3
1 1.2.10.2 tls /* $NetBSD: dead_vfsops.c,v 1.2.10.3 2017/12/03 11:38:47 jdolecek Exp $ */ 2 1.2.10.2 tls 3 1.2.10.2 tls /*- 4 1.2.10.2 tls * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 1.2.10.2 tls * All rights reserved. 6 1.2.10.2 tls * 7 1.2.10.2 tls * This code is derived from software contributed to The NetBSD Foundation 8 1.2.10.2 tls * by Juergen Hannken-Illjes. 9 1.2.10.2 tls * 10 1.2.10.2 tls * Redistribution and use in source and binary forms, with or without 11 1.2.10.2 tls * modification, are permitted provided that the following conditions 12 1.2.10.2 tls * are met: 13 1.2.10.2 tls * 1. Redistributions of source code must retain the above copyright 14 1.2.10.2 tls * notice, this list of conditions and the following disclaimer. 15 1.2.10.2 tls * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.10.2 tls * notice, this list of conditions and the following disclaimer in the 17 1.2.10.2 tls * documentation and/or other materials provided with the distribution. 18 1.2.10.2 tls * 19 1.2.10.2 tls * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.2.10.2 tls * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.2.10.2 tls * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.2.10.2 tls * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.2.10.2 tls * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.2.10.2 tls * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.2.10.2 tls * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.2.10.2 tls * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.2.10.2 tls * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.2.10.2 tls * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.2.10.2 tls * POSSIBILITY OF SUCH DAMAGE. 30 1.2.10.2 tls */ 31 1.2.10.2 tls 32 1.2.10.2 tls #include <sys/cdefs.h> 33 1.2.10.2 tls __KERNEL_RCSID(0, "$NetBSD: dead_vfsops.c,v 1.2.10.3 2017/12/03 11:38:47 jdolecek Exp $"); 34 1.2.10.2 tls 35 1.2.10.2 tls #include <sys/param.h> 36 1.2.10.2 tls #include <sys/systm.h> 37 1.2.10.2 tls #include <sys/vnode.h> 38 1.2.10.2 tls #include <sys/mount.h> 39 1.2.10.2 tls 40 1.2.10.3 jdolecek #include <miscfs/specfs/specdev.h> 41 1.2.10.3 jdolecek 42 1.2.10.3 jdolecek VFS_PROTOS(dead); 43 1.2.10.3 jdolecek 44 1.2.10.3 jdolecek static void dead_panic(void); 45 1.2.10.3 jdolecek 46 1.2.10.2 tls extern const struct vnodeopv_desc dead_vnodeop_opv_desc; 47 1.2.10.2 tls 48 1.2.10.2 tls static const struct vnodeopv_desc * const dead_vnodeopv_descs[] = { 49 1.2.10.2 tls &dead_vnodeop_opv_desc, 50 1.2.10.2 tls NULL 51 1.2.10.2 tls }; 52 1.2.10.2 tls 53 1.2.10.3 jdolecek struct mount *dead_rootmount; 54 1.2.10.2 tls 55 1.2.10.2 tls struct vfsops dead_vfsops = { 56 1.2.10.2 tls .vfs_name = "dead", 57 1.2.10.2 tls .vfs_min_mount_data = 0, 58 1.2.10.2 tls .vfs_mount = (void *)dead_panic, 59 1.2.10.2 tls .vfs_start = (void *)dead_panic, 60 1.2.10.2 tls .vfs_unmount = (void *)dead_panic, 61 1.2.10.2 tls .vfs_root = (void *)dead_panic, 62 1.2.10.2 tls .vfs_quotactl = (void *)dead_panic, 63 1.2.10.2 tls .vfs_statvfs = (void *)dead_panic, 64 1.2.10.2 tls .vfs_sync = (void *)dead_panic, 65 1.2.10.2 tls .vfs_vget = (void *)dead_panic, 66 1.2.10.3 jdolecek .vfs_loadvnode = (void *)dead_panic, 67 1.2.10.3 jdolecek .vfs_newvnode = dead_newvnode, 68 1.2.10.2 tls .vfs_fhtovp = (void *)dead_panic, 69 1.2.10.2 tls .vfs_vptofh = (void *)dead_panic, 70 1.2.10.2 tls .vfs_init = (void *)dead_panic, 71 1.2.10.2 tls .vfs_reinit = (void *)dead_panic, 72 1.2.10.2 tls .vfs_done = (void *)dead_panic, 73 1.2.10.2 tls .vfs_mountroot = (void *)dead_panic, 74 1.2.10.2 tls .vfs_snapshot = (void *)dead_panic, 75 1.2.10.2 tls .vfs_extattrctl = (void *)dead_panic, 76 1.2.10.2 tls .vfs_suspendctl = (void *)dead_panic, 77 1.2.10.2 tls .vfs_renamelock_enter = (void *)dead_panic, 78 1.2.10.2 tls .vfs_renamelock_exit = (void *)dead_panic, 79 1.2.10.2 tls .vfs_fsync = (void *)eopnotsupp, 80 1.2.10.2 tls .vfs_opv_descs = dead_vnodeopv_descs 81 1.2.10.2 tls }; 82 1.2.10.3 jdolecek 83 1.2.10.3 jdolecek static void 84 1.2.10.3 jdolecek dead_panic(void) 85 1.2.10.3 jdolecek { 86 1.2.10.3 jdolecek 87 1.2.10.3 jdolecek panic("dead fs operation used"); 88 1.2.10.3 jdolecek } 89 1.2.10.3 jdolecek 90 1.2.10.3 jdolecek /* 91 1.2.10.3 jdolecek * Create a new anonymous device vnode. 92 1.2.10.3 jdolecek */ 93 1.2.10.3 jdolecek int 94 1.2.10.3 jdolecek dead_newvnode(struct mount *mp, struct vnode *dvp, struct vnode *vp, 95 1.2.10.3 jdolecek struct vattr *vap, kauth_cred_t cred, 96 1.2.10.3 jdolecek size_t *key_len, const void **new_key) 97 1.2.10.3 jdolecek { 98 1.2.10.3 jdolecek 99 1.2.10.3 jdolecek KASSERT(mp == dead_rootmount); 100 1.2.10.3 jdolecek KASSERT(dvp == NULL); 101 1.2.10.3 jdolecek KASSERT(vap->va_type == VCHR || vap->va_type == VBLK); 102 1.2.10.3 jdolecek KASSERT(vap->va_rdev != VNOVAL); 103 1.2.10.3 jdolecek 104 1.2.10.3 jdolecek vp->v_tag = VT_NON; 105 1.2.10.3 jdolecek vp->v_type = vap->va_type; 106 1.2.10.3 jdolecek vp->v_op = spec_vnodeop_p; 107 1.2.10.3 jdolecek vp->v_vflag |= VV_MPSAFE; 108 1.2.10.3 jdolecek uvm_vnp_setsize(vp, 0); 109 1.2.10.3 jdolecek spec_node_init(vp, vap->va_rdev); 110 1.2.10.3 jdolecek 111 1.2.10.3 jdolecek *key_len = 0; 112 1.2.10.3 jdolecek *new_key = NULL; 113 1.2.10.3 jdolecek 114 1.2.10.3 jdolecek return 0; 115 1.2.10.3 jdolecek } 116
Indexes created Fri Oct 03 17:10:05 GMT 2025