1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1991, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * (c) UNIX System Laboratories, Inc. 7 * All or some portions of this file are derived from material licensed 8 * to the University of California by American Telephone and Telegraph 9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 10 * the permission of UNIX System Laboratories, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR 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 37 #include <sys/cdefs.h> 38 #include "opt_quota.h" 39 #include "opt_ufs.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/lock.h> 45 #include <sys/malloc.h> 46 #include <sys/mount.h> 47 #include <sys/proc.h> 48 #include <sys/socket.h> 49 #include <sys/vnode.h> 50 51 #include <ufs/ufs/extattr.h> 52 #include <ufs/ufs/quota.h> 53 #include <ufs/ufs/inode.h> 54 #include <ufs/ufs/ufsmount.h> 55 #include <ufs/ufs/ufs_extern.h> 56 #ifdef UFS_DIRHASH 57 #include <ufs/ufs/dir.h> 58 #include <ufs/ufs/dirhash.h> 59 #endif 60 61 MALLOC_DEFINE(M_UFSMNT, "ufs_mount", "UFS mount structure"); 62 63 /* 64 * Return the root of a filesystem. 65 */ 66 int 67 ufs_root(struct mount *mp, int flags, struct vnode **vpp) 68 { 69 struct vnode *nvp; 70 int error; 71 72 error = VFS_VGET(mp, (ino_t)UFS_ROOTINO, flags, &nvp); 73 if (error) 74 return (error); 75 *vpp = nvp; 76 return (0); 77 } 78 79 /* 80 * Do operations associated with quotas 81 */ 82 int 83 ufs_quotactl(struct mount *mp, int cmds, uid_t id, void *arg, bool *mp_busy) 84 { 85 #ifndef QUOTA 86 return (EOPNOTSUPP); 87 #else 88 struct thread *td; 89 int cmd, type, error; 90 91 td = curthread; 92 cmd = cmds >> SUBCMDSHIFT; 93 type = cmds & SUBCMDMASK; 94 if (id == -1) { 95 switch (type) { 96 case USRQUOTA: 97 id = td->td_ucred->cr_ruid; 98 break; 99 100 case GRPQUOTA: 101 id = td->td_ucred->cr_rgid; 102 break; 103 104 default: 105 return (EINVAL); 106 } 107 } 108 if ((uint64_t)type >= MAXQUOTAS) 109 return (EINVAL); 110 111 switch (cmd) { 112 case Q_QUOTAON: 113 error = quotaon(td, mp, type, arg, mp_busy); 114 break; 115 116 case Q_QUOTAOFF: 117 vfs_ref(mp); 118 KASSERT(*mp_busy, 119 ("%s called without busied mount", __func__)); 120 vn_start_write(NULL, &mp, V_WAIT); 121 vfs_unbusy(mp); 122 *mp_busy = false; 123 error = quotaoff(td, mp, type); 124 vn_finished_write(mp); 125 vfs_rel(mp); 126 break; 127 128 case Q_SETQUOTA32: 129 error = setquota32(td, mp, id, type, arg); 130 break; 131 132 case Q_SETUSE32: 133 error = setuse32(td, mp, id, type, arg); 134 break; 135 136 case Q_GETQUOTA32: 137 error = getquota32(td, mp, id, type, arg); 138 break; 139 140 case Q_SETQUOTA: 141 error = setquota(td, mp, id, type, arg); 142 break; 143 144 case Q_SETUSE: 145 error = setuse(td, mp, id, type, arg); 146 break; 147 148 case Q_GETQUOTA: 149 error = getquota(td, mp, id, type, arg); 150 break; 151 152 case Q_GETQUOTASIZE: 153 error = getquotasize(td, mp, id, type, arg); 154 break; 155 156 case Q_SYNC: 157 error = qsync(mp); 158 break; 159 160 default: 161 error = EINVAL; 162 break; 163 } 164 return (error); 165 #endif 166 } 167 168 /* 169 * Initial UFS filesystems, done only once. 170 */ 171 int 172 ufs_init(struct vfsconf *vfsp) 173 { 174 175 #ifdef QUOTA 176 dqinit(); 177 #endif 178 #ifdef UFS_DIRHASH 179 ufsdirhash_init(); 180 #endif 181 return (0); 182 } 183 184 /* 185 * Uninitialise UFS filesystems, done before module unload. 186 */ 187 int 188 ufs_uninit(struct vfsconf *vfsp) 189 { 190 191 #ifdef QUOTA 192 dquninit(); 193 #endif 194 #ifdef UFS_DIRHASH 195 ufsdirhash_uninit(); 196 #endif 197 return (0); 198 } 199