ulfs_vfsops.c revision 1.8.2.2
1 1.8.2.2 tls /* $NetBSD: ulfs_vfsops.c,v 1.8.2.2 2013/06/23 06:18:39 tls Exp $ */ 2 1.8.2.2 tls /* from NetBSD: ufs_vfsops.c,v 1.52 2013/01/22 09:39:18 dholland Exp */ 3 1.8.2.2 tls 4 1.8.2.2 tls /* 5 1.8.2.2 tls * Copyright (c) 1991, 1993, 1994 6 1.8.2.2 tls * The Regents of the University of California. All rights reserved. 7 1.8.2.2 tls * (c) UNIX System Laboratories, Inc. 8 1.8.2.2 tls * All or some portions of this file are derived from material licensed 9 1.8.2.2 tls * to the University of California by American Telephone and Telegraph 10 1.8.2.2 tls * Co. or Unix System Laboratories, Inc. and are reproduced herein with 11 1.8.2.2 tls * the permission of UNIX System Laboratories, Inc. 12 1.8.2.2 tls * 13 1.8.2.2 tls * Redistribution and use in source and binary forms, with or without 14 1.8.2.2 tls * modification, are permitted provided that the following conditions 15 1.8.2.2 tls * are met: 16 1.8.2.2 tls * 1. Redistributions of source code must retain the above copyright 17 1.8.2.2 tls * notice, this list of conditions and the following disclaimer. 18 1.8.2.2 tls * 2. Redistributions in binary form must reproduce the above copyright 19 1.8.2.2 tls * notice, this list of conditions and the following disclaimer in the 20 1.8.2.2 tls * documentation and/or other materials provided with the distribution. 21 1.8.2.2 tls * 3. Neither the name of the University nor the names of its contributors 22 1.8.2.2 tls * may be used to endorse or promote products derived from this software 23 1.8.2.2 tls * without specific prior written permission. 24 1.8.2.2 tls * 25 1.8.2.2 tls * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 1.8.2.2 tls * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 1.8.2.2 tls * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 1.8.2.2 tls * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 1.8.2.2 tls * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 1.8.2.2 tls * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 1.8.2.2 tls * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 1.8.2.2 tls * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 1.8.2.2 tls * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 1.8.2.2 tls * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 1.8.2.2 tls * SUCH DAMAGE. 36 1.8.2.2 tls * 37 1.8.2.2 tls * @(#)ufs_vfsops.c 8.8 (Berkeley) 5/20/95 38 1.8.2.2 tls */ 39 1.8.2.2 tls 40 1.8.2.2 tls #include <sys/cdefs.h> 41 1.8.2.2 tls __KERNEL_RCSID(0, "$NetBSD: ulfs_vfsops.c,v 1.8.2.2 2013/06/23 06:18:39 tls Exp $"); 42 1.8.2.2 tls 43 1.8.2.2 tls #if defined(_KERNEL_OPT) 44 1.8.2.2 tls #include "opt_lfs.h" 45 1.8.2.2 tls #include "opt_quota.h" 46 1.8.2.2 tls #endif 47 1.8.2.2 tls 48 1.8.2.2 tls #include <sys/param.h> 49 1.8.2.2 tls #include <sys/mbuf.h> 50 1.8.2.2 tls #include <sys/mount.h> 51 1.8.2.2 tls #include <sys/proc.h> 52 1.8.2.2 tls #include <sys/buf.h> 53 1.8.2.2 tls #include <sys/vnode.h> 54 1.8.2.2 tls #include <sys/kmem.h> 55 1.8.2.2 tls #include <sys/kauth.h> 56 1.8.2.2 tls #include <sys/quotactl.h> 57 1.8.2.2 tls 58 1.8.2.2 tls #include <miscfs/specfs/specdev.h> 59 1.8.2.2 tls 60 1.8.2.2 tls #include <ufs/lfs/lfs.h> 61 1.8.2.2 tls #include <ufs/lfs/ulfs_quotacommon.h> 62 1.8.2.2 tls #include <ufs/lfs/ulfs_inode.h> 63 1.8.2.2 tls #include <ufs/lfs/ulfsmount.h> 64 1.8.2.2 tls #include <ufs/lfs/ulfs_extern.h> 65 1.8.2.2 tls #ifdef LFS_DIRHASH 66 1.8.2.2 tls #include <ufs/lfs/ulfs_dirhash.h> 67 1.8.2.2 tls #endif 68 1.8.2.2 tls 69 1.8.2.2 tls /* how many times ulfs_init() was called */ 70 1.8.2.2 tls static int ulfs_initcount = 0; 71 1.8.2.2 tls 72 1.8.2.2 tls pool_cache_t ulfs_direct_cache; 73 1.8.2.2 tls 74 1.8.2.2 tls /* 75 1.8.2.2 tls * Make a filesystem operational. 76 1.8.2.2 tls * Nothing to do at the moment. 77 1.8.2.2 tls */ 78 1.8.2.2 tls /* ARGSUSED */ 79 1.8.2.2 tls int 80 1.8.2.2 tls ulfs_start(struct mount *mp, int flags) 81 1.8.2.2 tls { 82 1.8.2.2 tls 83 1.8.2.2 tls return (0); 84 1.8.2.2 tls } 85 1.8.2.2 tls 86 1.8.2.2 tls /* 87 1.8.2.2 tls * Return the root of a filesystem. 88 1.8.2.2 tls */ 89 1.8.2.2 tls int 90 1.8.2.2 tls ulfs_root(struct mount *mp, struct vnode **vpp) 91 1.8.2.2 tls { 92 1.8.2.2 tls struct vnode *nvp; 93 1.8.2.2 tls int error; 94 1.8.2.2 tls 95 1.8.2.2 tls if ((error = VFS_VGET(mp, (ino_t)ULFS_ROOTINO, &nvp)) != 0) 96 1.8.2.2 tls return (error); 97 1.8.2.2 tls *vpp = nvp; 98 1.8.2.2 tls return (0); 99 1.8.2.2 tls } 100 1.8.2.2 tls 101 1.8.2.2 tls /* 102 1.8.2.2 tls * Do operations associated with quotas 103 1.8.2.2 tls */ 104 1.8.2.2 tls int 105 1.8.2.2 tls ulfs_quotactl(struct mount *mp, struct quotactl_args *args) 106 1.8.2.2 tls { 107 1.8.2.2 tls 108 1.8.2.2 tls #if !defined(LFS_QUOTA) && !defined(LFS_QUOTA2) 109 1.8.2.2 tls (void) mp; 110 1.8.2.2 tls (void) args; 111 1.8.2.2 tls return (EOPNOTSUPP); 112 1.8.2.2 tls #else 113 1.8.2.2 tls struct lwp *l = curlwp; 114 1.8.2.2 tls int error; 115 1.8.2.2 tls 116 1.8.2.2 tls /* Mark the mount busy, as we're passing it to kauth(9). */ 117 1.8.2.2 tls error = vfs_busy(mp, NULL); 118 1.8.2.2 tls if (error) { 119 1.8.2.2 tls return (error); 120 1.8.2.2 tls } 121 1.8.2.2 tls mutex_enter(&mp->mnt_updating); 122 1.8.2.2 tls 123 1.8.2.2 tls error = lfsquota_handle_cmd(mp, l, args); 124 1.8.2.2 tls 125 1.8.2.2 tls mutex_exit(&mp->mnt_updating); 126 1.8.2.2 tls vfs_unbusy(mp, false, NULL); 127 1.8.2.2 tls return (error); 128 1.8.2.2 tls #endif 129 1.8.2.2 tls } 130 1.8.2.2 tls 131 1.8.2.2 tls #if 0 132 1.8.2.2 tls switch (cmd) { 133 1.8.2.2 tls case Q_SYNC: 134 1.8.2.2 tls break; 135 1.8.2.2 tls 136 1.8.2.2 tls case Q_GETQUOTA: 137 1.8.2.2 tls /* The user can always query about his own quota. */ 138 1.8.2.2 tls if (uid == kauth_cred_getuid(l->l_cred)) 139 1.8.2.2 tls break; 140 1.8.2.2 tls 141 1.8.2.2 tls error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_FS_QUOTA, 142 1.8.2.2 tls KAUTH_REQ_SYSTEM_FS_QUOTA_GET, mp, KAUTH_ARG(uid), NULL); 143 1.8.2.2 tls 144 1.8.2.2 tls break; 145 1.8.2.2 tls 146 1.8.2.2 tls case Q_QUOTAON: 147 1.8.2.2 tls case Q_QUOTAOFF: 148 1.8.2.2 tls error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_FS_QUOTA, 149 1.8.2.2 tls KAUTH_REQ_SYSTEM_FS_QUOTA_ONOFF, mp, NULL, NULL); 150 1.8.2.2 tls 151 1.8.2.2 tls break; 152 1.8.2.2 tls 153 1.8.2.2 tls case Q_SETQUOTA: 154 1.8.2.2 tls case Q_SETUSE: 155 1.8.2.2 tls error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_FS_QUOTA, 156 1.8.2.2 tls KAUTH_REQ_SYSTEM_FS_QUOTA_MANAGE, mp, KAUTH_ARG(uid), NULL); 157 1.8.2.2 tls 158 1.8.2.2 tls break; 159 1.8.2.2 tls 160 1.8.2.2 tls default: 161 1.8.2.2 tls error = EINVAL; 162 1.8.2.2 tls break; 163 1.8.2.2 tls } 164 1.8.2.2 tls 165 1.8.2.2 tls type = cmds & SUBCMDMASK; 166 1.8.2.2 tls if (!error) { 167 1.8.2.2 tls /* Only check if there was no error above. */ 168 1.8.2.2 tls if ((u_int)type >= MAXQUOTAS) 169 1.8.2.2 tls error = EINVAL; 170 1.8.2.2 tls } 171 1.8.2.2 tls 172 1.8.2.2 tls if (error) { 173 1.8.2.2 tls vfs_unbusy(mp, false, NULL); 174 1.8.2.2 tls return (error); 175 1.8.2.2 tls } 176 1.8.2.2 tls 177 1.8.2.2 tls mutex_enter(&mp->mnt_updating); 178 1.8.2.2 tls switch (cmd) { 179 1.8.2.2 tls 180 1.8.2.2 tls case Q_QUOTAON: 181 1.8.2.2 tls error = quotaon(l, mp, type, arg); 182 1.8.2.2 tls break; 183 1.8.2.2 tls 184 1.8.2.2 tls case Q_QUOTAOFF: 185 1.8.2.2 tls error = quotaoff(l, mp, type); 186 1.8.2.2 tls break; 187 1.8.2.2 tls 188 1.8.2.2 tls case Q_SETQUOTA: 189 1.8.2.2 tls error = setquota(mp, uid, type, arg); 190 1.8.2.2 tls break; 191 1.8.2.2 tls 192 1.8.2.2 tls case Q_SETUSE: 193 1.8.2.2 tls error = setuse(mp, uid, type, arg); 194 1.8.2.2 tls break; 195 1.8.2.2 tls 196 1.8.2.2 tls case Q_GETQUOTA: 197 1.8.2.2 tls error = getquota(mp, uid, type, arg); 198 1.8.2.2 tls break; 199 1.8.2.2 tls 200 1.8.2.2 tls case Q_SYNC: 201 1.8.2.2 tls error = lfs_qsync(mp); 202 1.8.2.2 tls break; 203 1.8.2.2 tls 204 1.8.2.2 tls default: 205 1.8.2.2 tls error = EINVAL; 206 1.8.2.2 tls } 207 1.8.2.2 tls mutex_exit(&mp->mnt_updating); 208 1.8.2.2 tls vfs_unbusy(mp, false, NULL); 209 1.8.2.2 tls return (error); 210 1.8.2.2 tls #endif 211 1.8.2.2 tls 212 1.8.2.2 tls /* 213 1.8.2.2 tls * This is the generic part of fhtovp called after the underlying 214 1.8.2.2 tls * filesystem has validated the file handle. 215 1.8.2.2 tls */ 216 1.8.2.2 tls int 217 1.8.2.2 tls ulfs_fhtovp(struct mount *mp, struct ulfs_ufid *ufhp, struct vnode **vpp) 218 1.8.2.2 tls { 219 1.8.2.2 tls struct vnode *nvp; 220 1.8.2.2 tls struct inode *ip; 221 1.8.2.2 tls int error; 222 1.8.2.2 tls 223 1.8.2.2 tls if ((error = VFS_VGET(mp, ufhp->ufid_ino, &nvp)) != 0) { 224 1.8.2.2 tls *vpp = NULLVP; 225 1.8.2.2 tls return (error); 226 1.8.2.2 tls } 227 1.8.2.2 tls ip = VTOI(nvp); 228 1.8.2.2 tls KASSERT(ip != NULL); 229 1.8.2.2 tls if (ip->i_mode == 0 || ip->i_gen != ufhp->ufid_gen) { 230 1.8.2.2 tls vput(nvp); 231 1.8.2.2 tls *vpp = NULLVP; 232 1.8.2.2 tls return (ESTALE); 233 1.8.2.2 tls } 234 1.8.2.2 tls *vpp = nvp; 235 1.8.2.2 tls return (0); 236 1.8.2.2 tls } 237 1.8.2.2 tls 238 1.8.2.2 tls /* 239 1.8.2.2 tls * Initialize ULFS filesystems, done only once. 240 1.8.2.2 tls */ 241 1.8.2.2 tls void 242 1.8.2.2 tls ulfs_init(void) 243 1.8.2.2 tls { 244 1.8.2.2 tls if (ulfs_initcount++ > 0) 245 1.8.2.2 tls return; 246 1.8.2.2 tls 247 1.8.2.2 tls ulfs_direct_cache = pool_cache_init(sizeof(struct lfs_direct), 0, 0, 0, 248 1.8.2.2 tls "ulfsdir", NULL, IPL_NONE, NULL, NULL, NULL); 249 1.8.2.2 tls 250 1.8.2.2 tls ulfs_ihashinit(); 251 1.8.2.2 tls #if defined(LFS_QUOTA) || defined(LFS_QUOTA2) 252 1.8.2.2 tls lfs_dqinit(); 253 1.8.2.2 tls #endif 254 1.8.2.2 tls #ifdef LFS_DIRHASH 255 1.8.2.2 tls ulfsdirhash_init(); 256 1.8.2.2 tls #endif 257 1.8.2.2 tls #ifdef LFS_EXTATTR 258 1.8.2.2 tls ulfs_extattr_init(); 259 1.8.2.2 tls #endif 260 1.8.2.2 tls } 261 1.8.2.2 tls 262 1.8.2.2 tls void 263 1.8.2.2 tls ulfs_reinit(void) 264 1.8.2.2 tls { 265 1.8.2.2 tls ulfs_ihashreinit(); 266 1.8.2.2 tls #if defined(LFS_QUOTA) || defined(LFS_QUOTA2) 267 1.8.2.2 tls lfs_dqreinit(); 268 1.8.2.2 tls #endif 269 1.8.2.2 tls } 270 1.8.2.2 tls 271 1.8.2.2 tls /* 272 1.8.2.2 tls * Free ULFS filesystem resources, done only once. 273 1.8.2.2 tls */ 274 1.8.2.2 tls void 275 1.8.2.2 tls ulfs_done(void) 276 1.8.2.2 tls { 277 1.8.2.2 tls if (--ulfs_initcount > 0) 278 1.8.2.2 tls return; 279 1.8.2.2 tls 280 1.8.2.2 tls ulfs_ihashdone(); 281 1.8.2.2 tls #if defined(LFS_QUOTA) || defined(LFS_QUOTA2) 282 1.8.2.2 tls lfs_dqdone(); 283 1.8.2.2 tls #endif 284 1.8.2.2 tls pool_cache_destroy(ulfs_direct_cache); 285 1.8.2.2 tls #ifdef LFS_DIRHASH 286 1.8.2.2 tls ulfsdirhash_done(); 287 1.8.2.2 tls #endif 288 1.8.2.2 tls #ifdef LFS_EXTATTR 289 1.8.2.2 tls ulfs_extattr_done(); 290 1.8.2.2 tls #endif 291 1.8.2.2 tls } 292
Indexes created Sat Oct 25 16:10:12 GMT 2025