ulfs_quota.c revision 1.6.2.2
1 1.6.2.2 tls /* $NetBSD: ulfs_quota.c,v 1.6.2.2 2013/06/23 06:18:39 tls Exp $ */ 2 1.6.2.2 tls /* from NetBSD: ufs_quota.c,v 1.112 2012/09/09 04:27:49 manu Exp */ 3 1.6.2.2 tls 4 1.6.2.2 tls /* 5 1.6.2.2 tls * Copyright (c) 1982, 1986, 1990, 1993, 1995 6 1.6.2.2 tls * The Regents of the University of California. All rights reserved. 7 1.6.2.2 tls * 8 1.6.2.2 tls * This code is derived from software contributed to Berkeley by 9 1.6.2.2 tls * Robert Elz at The University of Melbourne. 10 1.6.2.2 tls * 11 1.6.2.2 tls * Redistribution and use in source and binary forms, with or without 12 1.6.2.2 tls * modification, are permitted provided that the following conditions 13 1.6.2.2 tls * are met: 14 1.6.2.2 tls * 1. Redistributions of source code must retain the above copyright 15 1.6.2.2 tls * notice, this list of conditions and the following disclaimer. 16 1.6.2.2 tls * 2. Redistributions in binary form must reproduce the above copyright 17 1.6.2.2 tls * notice, this list of conditions and the following disclaimer in the 18 1.6.2.2 tls * documentation and/or other materials provided with the distribution. 19 1.6.2.2 tls * 3. Neither the name of the University nor the names of its contributors 20 1.6.2.2 tls * may be used to endorse or promote products derived from this software 21 1.6.2.2 tls * without specific prior written permission. 22 1.6.2.2 tls * 23 1.6.2.2 tls * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 1.6.2.2 tls * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 1.6.2.2 tls * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 1.6.2.2 tls * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 1.6.2.2 tls * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 1.6.2.2 tls * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 1.6.2.2 tls * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 1.6.2.2 tls * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 1.6.2.2 tls * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 1.6.2.2 tls * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 1.6.2.2 tls * SUCH DAMAGE. 34 1.6.2.2 tls * 35 1.6.2.2 tls * @(#)ufs_quota.c 8.5 (Berkeley) 5/20/95 36 1.6.2.2 tls */ 37 1.6.2.2 tls 38 1.6.2.2 tls #include <sys/cdefs.h> 39 1.6.2.2 tls __KERNEL_RCSID(0, "$NetBSD: ulfs_quota.c,v 1.6.2.2 2013/06/23 06:18:39 tls Exp $"); 40 1.6.2.2 tls 41 1.6.2.2 tls #if defined(_KERNEL_OPT) 42 1.6.2.2 tls #include "opt_quota.h" 43 1.6.2.2 tls #endif 44 1.6.2.2 tls #include <sys/param.h> 45 1.6.2.2 tls #include <sys/kernel.h> 46 1.6.2.2 tls #include <sys/systm.h> 47 1.6.2.2 tls #include <sys/namei.h> 48 1.6.2.2 tls #include <sys/file.h> 49 1.6.2.2 tls #include <sys/proc.h> 50 1.6.2.2 tls #include <sys/vnode.h> 51 1.6.2.2 tls #include <sys/mount.h> 52 1.6.2.2 tls #include <sys/kauth.h> 53 1.6.2.2 tls 54 1.6.2.2 tls #include <sys/quotactl.h> 55 1.6.2.2 tls #include <ufs/lfs/ulfs_quotacommon.h> 56 1.6.2.2 tls #include <ufs/lfs/ulfs_inode.h> 57 1.6.2.2 tls #include <ufs/lfs/ulfsmount.h> 58 1.6.2.2 tls #include <ufs/lfs/ulfs_extern.h> 59 1.6.2.2 tls #include <ufs/lfs/ulfs_quota.h> 60 1.6.2.2 tls 61 1.6.2.2 tls kmutex_t lfs_dqlock; 62 1.6.2.2 tls kcondvar_t lfs_dqcv; 63 1.6.2.2 tls const char *lfs_quotatypes[ULFS_MAXQUOTAS] = INITQFNAMES; 64 1.6.2.2 tls 65 1.6.2.2 tls /* 66 1.6.2.2 tls * Code pertaining to management of the in-core dquot data structures. 67 1.6.2.2 tls */ 68 1.6.2.2 tls #define DQHASH(dqvp, id) \ 69 1.6.2.2 tls (((((long)(dqvp)) >> 8) + id) & dqhash) 70 1.6.2.2 tls static LIST_HEAD(dqhashhead, dquot) *dqhashtbl; 71 1.6.2.2 tls static u_long dqhash; 72 1.6.2.2 tls static pool_cache_t dquot_cache; 73 1.6.2.2 tls 74 1.6.2.2 tls 75 1.6.2.2 tls static int quota_handle_cmd_stat(struct mount *, struct lwp *, 76 1.6.2.2 tls struct quotactl_args *args); 77 1.6.2.2 tls static int quota_handle_cmd_idtypestat(struct mount *, struct lwp *, 78 1.6.2.2 tls struct quotactl_args *args); 79 1.6.2.2 tls static int quota_handle_cmd_objtypestat(struct mount *, struct lwp *, 80 1.6.2.2 tls struct quotactl_args *args); 81 1.6.2.2 tls static int quota_handle_cmd_get(struct mount *, struct lwp *, 82 1.6.2.2 tls struct quotactl_args *args); 83 1.6.2.2 tls static int quota_handle_cmd_put(struct mount *, struct lwp *, 84 1.6.2.2 tls struct quotactl_args *args); 85 1.6.2.2 tls static int quota_handle_cmd_cursorget(struct mount *, struct lwp *, 86 1.6.2.2 tls struct quotactl_args *args); 87 1.6.2.2 tls static int quota_handle_cmd_delete(struct mount *, struct lwp *, 88 1.6.2.2 tls struct quotactl_args *args); 89 1.6.2.2 tls static int quota_handle_cmd_quotaon(struct mount *, struct lwp *, 90 1.6.2.2 tls struct quotactl_args *args); 91 1.6.2.2 tls static int quota_handle_cmd_quotaoff(struct mount *, struct lwp *, 92 1.6.2.2 tls struct quotactl_args *args); 93 1.6.2.2 tls static int quota_handle_cmd_cursoropen(struct mount *, struct lwp *, 94 1.6.2.2 tls struct quotactl_args *args); 95 1.6.2.2 tls static int quota_handle_cmd_cursorclose(struct mount *, struct lwp *, 96 1.6.2.2 tls struct quotactl_args *args); 97 1.6.2.2 tls static int quota_handle_cmd_cursorskipidtype(struct mount *, struct lwp *, 98 1.6.2.2 tls struct quotactl_args *args); 99 1.6.2.2 tls static int quota_handle_cmd_cursoratend(struct mount *, struct lwp *, 100 1.6.2.2 tls struct quotactl_args *args); 101 1.6.2.2 tls static int quota_handle_cmd_cursorrewind(struct mount *, struct lwp *, 102 1.6.2.2 tls struct quotactl_args *args); 103 1.6.2.2 tls 104 1.6.2.2 tls /* 105 1.6.2.2 tls * Initialize the quota fields of an inode. 106 1.6.2.2 tls */ 107 1.6.2.2 tls void 108 1.6.2.2 tls ulfsquota_init(struct inode *ip) 109 1.6.2.2 tls { 110 1.6.2.2 tls int i; 111 1.6.2.2 tls 112 1.6.2.2 tls for (i = 0; i < ULFS_MAXQUOTAS; i++) 113 1.6.2.2 tls ip->i_dquot[i] = NODQUOT; 114 1.6.2.2 tls } 115 1.6.2.2 tls 116 1.6.2.2 tls /* 117 1.6.2.2 tls * Release the quota fields from an inode. 118 1.6.2.2 tls */ 119 1.6.2.2 tls void 120 1.6.2.2 tls ulfsquota_free(struct inode *ip) 121 1.6.2.2 tls { 122 1.6.2.2 tls int i; 123 1.6.2.2 tls 124 1.6.2.2 tls for (i = 0; i < ULFS_MAXQUOTAS; i++) { 125 1.6.2.2 tls lfs_dqrele(ITOV(ip), ip->i_dquot[i]); 126 1.6.2.2 tls ip->i_dquot[i] = NODQUOT; 127 1.6.2.2 tls } 128 1.6.2.2 tls } 129 1.6.2.2 tls 130 1.6.2.2 tls /* 131 1.6.2.2 tls * Update disk usage, and take corrective action. 132 1.6.2.2 tls */ 133 1.6.2.2 tls int 134 1.6.2.2 tls lfs_chkdq(struct inode *ip, int64_t change, kauth_cred_t cred, int flags) 135 1.6.2.2 tls { 136 1.6.2.2 tls /* do not track snapshot usage, or we will deadlock */ 137 1.6.2.2 tls if ((ip->i_flags & SF_SNAPSHOT) != 0) 138 1.6.2.2 tls return 0; 139 1.6.2.2 tls 140 1.6.2.2 tls #ifdef LFS_QUOTA 141 1.6.2.2 tls if (ip->i_ump->um_flags & ULFS_QUOTA) 142 1.6.2.2 tls return lfs_chkdq1(ip, change, cred, flags); 143 1.6.2.2 tls #endif 144 1.6.2.2 tls #ifdef LFS_QUOTA2 145 1.6.2.2 tls if (ip->i_ump->um_flags & ULFS_QUOTA2) 146 1.6.2.2 tls return lfs_chkdq2(ip, change, cred, flags); 147 1.6.2.2 tls #endif 148 1.6.2.2 tls return 0; 149 1.6.2.2 tls } 150 1.6.2.2 tls 151 1.6.2.2 tls /* 152 1.6.2.2 tls * Check the inode limit, applying corrective action. 153 1.6.2.2 tls */ 154 1.6.2.2 tls int 155 1.6.2.2 tls lfs_chkiq(struct inode *ip, int32_t change, kauth_cred_t cred, int flags) 156 1.6.2.2 tls { 157 1.6.2.2 tls /* do not track snapshot usage, or we will deadlock */ 158 1.6.2.2 tls if ((ip->i_flags & SF_SNAPSHOT) != 0) 159 1.6.2.2 tls return 0; 160 1.6.2.2 tls #ifdef LFS_QUOTA 161 1.6.2.2 tls if (ip->i_ump->um_flags & ULFS_QUOTA) 162 1.6.2.2 tls return lfs_chkiq1(ip, change, cred, flags); 163 1.6.2.2 tls #endif 164 1.6.2.2 tls #ifdef LFS_QUOTA2 165 1.6.2.2 tls if (ip->i_ump->um_flags & ULFS_QUOTA2) 166 1.6.2.2 tls return lfs_chkiq2(ip, change, cred, flags); 167 1.6.2.2 tls #endif 168 1.6.2.2 tls return 0; 169 1.6.2.2 tls } 170 1.6.2.2 tls 171 1.6.2.2 tls int 172 1.6.2.2 tls lfsquota_handle_cmd(struct mount *mp, struct lwp *l, 173 1.6.2.2 tls struct quotactl_args *args) 174 1.6.2.2 tls { 175 1.6.2.2 tls int error = 0; 176 1.6.2.2 tls 177 1.6.2.2 tls switch (args->qc_op) { 178 1.6.2.2 tls case QUOTACTL_STAT: 179 1.6.2.2 tls error = quota_handle_cmd_stat(mp, l, args); 180 1.6.2.2 tls break; 181 1.6.2.2 tls case QUOTACTL_IDTYPESTAT: 182 1.6.2.2 tls error = quota_handle_cmd_idtypestat(mp, l, args); 183 1.6.2.2 tls break; 184 1.6.2.2 tls case QUOTACTL_OBJTYPESTAT: 185 1.6.2.2 tls error = quota_handle_cmd_objtypestat(mp, l, args); 186 1.6.2.2 tls break; 187 1.6.2.2 tls case QUOTACTL_QUOTAON: 188 1.6.2.2 tls error = quota_handle_cmd_quotaon(mp, l, args); 189 1.6.2.2 tls break; 190 1.6.2.2 tls case QUOTACTL_QUOTAOFF: 191 1.6.2.2 tls error = quota_handle_cmd_quotaoff(mp, l, args); 192 1.6.2.2 tls break; 193 1.6.2.2 tls case QUOTACTL_GET: 194 1.6.2.2 tls error = quota_handle_cmd_get(mp, l, args); 195 1.6.2.2 tls break; 196 1.6.2.2 tls case QUOTACTL_PUT: 197 1.6.2.2 tls error = quota_handle_cmd_put(mp, l, args); 198 1.6.2.2 tls break; 199 1.6.2.2 tls case QUOTACTL_CURSORGET: 200 1.6.2.2 tls error = quota_handle_cmd_cursorget(mp, l, args); 201 1.6.2.2 tls break; 202 1.6.2.2 tls case QUOTACTL_DELETE: 203 1.6.2.2 tls error = quota_handle_cmd_delete(mp, l, args); 204 1.6.2.2 tls break; 205 1.6.2.2 tls case QUOTACTL_CURSOROPEN: 206 1.6.2.2 tls error = quota_handle_cmd_cursoropen(mp, l, args); 207 1.6.2.2 tls break; 208 1.6.2.2 tls case QUOTACTL_CURSORCLOSE: 209 1.6.2.2 tls error = quota_handle_cmd_cursorclose(mp, l, args); 210 1.6.2.2 tls break; 211 1.6.2.2 tls case QUOTACTL_CURSORSKIPIDTYPE: 212 1.6.2.2 tls error = quota_handle_cmd_cursorskipidtype(mp, l, args); 213 1.6.2.2 tls break; 214 1.6.2.2 tls case QUOTACTL_CURSORATEND: 215 1.6.2.2 tls error = quota_handle_cmd_cursoratend(mp, l, args); 216 1.6.2.2 tls break; 217 1.6.2.2 tls case QUOTACTL_CURSORREWIND: 218 1.6.2.2 tls error = quota_handle_cmd_cursorrewind(mp, l, args); 219 1.6.2.2 tls break; 220 1.6.2.2 tls default: 221 1.6.2.2 tls panic("Invalid quotactl operation %d\n", args->qc_op); 222 1.6.2.2 tls } 223 1.6.2.2 tls 224 1.6.2.2 tls return error; 225 1.6.2.2 tls } 226 1.6.2.2 tls 227 1.6.2.2 tls static int 228 1.6.2.2 tls quota_handle_cmd_stat(struct mount *mp, struct lwp *l, 229 1.6.2.2 tls struct quotactl_args *args) 230 1.6.2.2 tls { 231 1.6.2.2 tls struct ulfsmount *ump = VFSTOULFS(mp); 232 1.6.2.2 tls struct quotastat *info; 233 1.6.2.2 tls 234 1.6.2.2 tls KASSERT(args->qc_op == QUOTACTL_STAT); 235 1.6.2.2 tls info = args->u.stat.qc_info; 236 1.6.2.2 tls 237 1.6.2.2 tls if ((ump->um_flags & (ULFS_QUOTA|ULFS_QUOTA2)) == 0) 238 1.6.2.2 tls return EOPNOTSUPP; 239 1.6.2.2 tls 240 1.6.2.2 tls #ifdef LFS_QUOTA 241 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA) { 242 1.6.2.2 tls strcpy(info->qs_implname, "lfs quota v1"); 243 1.6.2.2 tls info->qs_numidtypes = ULFS_MAXQUOTAS; 244 1.6.2.2 tls /* XXX no define for this */ 245 1.6.2.2 tls info->qs_numobjtypes = 2; 246 1.6.2.2 tls info->qs_restrictions = 0; 247 1.6.2.2 tls info->qs_restrictions |= QUOTA_RESTRICT_NEEDSQUOTACHECK; 248 1.6.2.2 tls info->qs_restrictions |= QUOTA_RESTRICT_UNIFORMGRACE; 249 1.6.2.2 tls info->qs_restrictions |= QUOTA_RESTRICT_32BIT; 250 1.6.2.2 tls } else 251 1.6.2.2 tls #endif 252 1.6.2.2 tls #ifdef LFS_QUOTA2 253 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA2) { 254 1.6.2.2 tls strcpy(info->qs_implname, "lfs quota v2"); 255 1.6.2.2 tls info->qs_numidtypes = ULFS_MAXQUOTAS; 256 1.6.2.2 tls info->qs_numobjtypes = N_QL; 257 1.6.2.2 tls info->qs_restrictions = 0; 258 1.6.2.2 tls } else 259 1.6.2.2 tls #endif 260 1.6.2.2 tls return EOPNOTSUPP; 261 1.6.2.2 tls 262 1.6.2.2 tls return 0; 263 1.6.2.2 tls } 264 1.6.2.2 tls 265 1.6.2.2 tls static int 266 1.6.2.2 tls quota_handle_cmd_idtypestat(struct mount *mp, struct lwp *l, 267 1.6.2.2 tls struct quotactl_args *args) 268 1.6.2.2 tls { 269 1.6.2.2 tls struct ulfsmount *ump = VFSTOULFS(mp); 270 1.6.2.2 tls int idtype; 271 1.6.2.2 tls struct quotaidtypestat *info; 272 1.6.2.2 tls const char *name; 273 1.6.2.2 tls 274 1.6.2.2 tls KASSERT(args->qc_op == QUOTACTL_IDTYPESTAT); 275 1.6.2.2 tls idtype = args->u.idtypestat.qc_idtype; 276 1.6.2.2 tls info = args->u.idtypestat.qc_info; 277 1.6.2.2 tls 278 1.6.2.2 tls if ((ump->um_flags & (ULFS_QUOTA|ULFS_QUOTA2)) == 0) 279 1.6.2.2 tls return EOPNOTSUPP; 280 1.6.2.2 tls 281 1.6.2.2 tls /* 282 1.6.2.2 tls * These are the same for both QUOTA and QUOTA2. 283 1.6.2.2 tls */ 284 1.6.2.2 tls switch (idtype) { 285 1.6.2.2 tls case QUOTA_IDTYPE_USER: 286 1.6.2.2 tls name = "user"; 287 1.6.2.2 tls break; 288 1.6.2.2 tls case QUOTA_IDTYPE_GROUP: 289 1.6.2.2 tls name = "group"; 290 1.6.2.2 tls break; 291 1.6.2.2 tls default: 292 1.6.2.2 tls return EINVAL; 293 1.6.2.2 tls } 294 1.6.2.2 tls strlcpy(info->qis_name, name, sizeof(info->qis_name)); 295 1.6.2.2 tls return 0; 296 1.6.2.2 tls } 297 1.6.2.2 tls 298 1.6.2.2 tls static int 299 1.6.2.2 tls quota_handle_cmd_objtypestat(struct mount *mp, struct lwp *l, 300 1.6.2.2 tls struct quotactl_args *args) 301 1.6.2.2 tls { 302 1.6.2.2 tls struct ulfsmount *ump = VFSTOULFS(mp); 303 1.6.2.2 tls int objtype; 304 1.6.2.2 tls struct quotaobjtypestat *info; 305 1.6.2.2 tls const char *name; 306 1.6.2.2 tls int isbytes; 307 1.6.2.2 tls 308 1.6.2.2 tls KASSERT(args->qc_op == QUOTACTL_OBJTYPESTAT); 309 1.6.2.2 tls objtype = args->u.objtypestat.qc_objtype; 310 1.6.2.2 tls info = args->u.objtypestat.qc_info; 311 1.6.2.2 tls 312 1.6.2.2 tls if ((ump->um_flags & (ULFS_QUOTA|ULFS_QUOTA2)) == 0) 313 1.6.2.2 tls return EOPNOTSUPP; 314 1.6.2.2 tls 315 1.6.2.2 tls /* 316 1.6.2.2 tls * These are the same for both QUOTA and QUOTA2. 317 1.6.2.2 tls */ 318 1.6.2.2 tls switch (objtype) { 319 1.6.2.2 tls case QUOTA_OBJTYPE_BLOCKS: 320 1.6.2.2 tls name = "block"; 321 1.6.2.2 tls isbytes = 1; 322 1.6.2.2 tls break; 323 1.6.2.2 tls case QUOTA_OBJTYPE_FILES: 324 1.6.2.2 tls name = "file"; 325 1.6.2.2 tls isbytes = 0; 326 1.6.2.2 tls break; 327 1.6.2.2 tls default: 328 1.6.2.2 tls return EINVAL; 329 1.6.2.2 tls } 330 1.6.2.2 tls strlcpy(info->qos_name, name, sizeof(info->qos_name)); 331 1.6.2.2 tls info->qos_isbytes = isbytes; 332 1.6.2.2 tls return 0; 333 1.6.2.2 tls } 334 1.6.2.2 tls 335 1.6.2.2 tls /* XXX shouldn't all this be in kauth ? */ 336 1.6.2.2 tls static int 337 1.6.2.2 tls quota_get_auth(struct mount *mp, struct lwp *l, uid_t id) { 338 1.6.2.2 tls /* The user can always query about his own quota. */ 339 1.6.2.2 tls if (id == kauth_cred_geteuid(l->l_cred)) 340 1.6.2.2 tls return 0; 341 1.6.2.2 tls return kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_FS_QUOTA, 342 1.6.2.2 tls KAUTH_REQ_SYSTEM_FS_QUOTA_GET, mp, KAUTH_ARG(id), NULL); 343 1.6.2.2 tls } 344 1.6.2.2 tls 345 1.6.2.2 tls static int 346 1.6.2.2 tls quota_handle_cmd_get(struct mount *mp, struct lwp *l, 347 1.6.2.2 tls struct quotactl_args *args) 348 1.6.2.2 tls { 349 1.6.2.2 tls struct ulfsmount *ump = VFSTOULFS(mp); 350 1.6.2.2 tls int error; 351 1.6.2.2 tls const struct quotakey *qk; 352 1.6.2.2 tls struct quotaval *qv; 353 1.6.2.2 tls 354 1.6.2.2 tls KASSERT(args->qc_op == QUOTACTL_GET); 355 1.6.2.2 tls qk = args->u.get.qc_key; 356 1.6.2.2 tls qv = args->u.get.qc_val; 357 1.6.2.2 tls 358 1.6.2.2 tls if ((ump->um_flags & (ULFS_QUOTA|ULFS_QUOTA2)) == 0) 359 1.6.2.2 tls return EOPNOTSUPP; 360 1.6.2.2 tls 361 1.6.2.2 tls error = quota_get_auth(mp, l, qk->qk_id); 362 1.6.2.2 tls if (error != 0) 363 1.6.2.2 tls return error; 364 1.6.2.2 tls #ifdef LFS_QUOTA 365 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA) { 366 1.6.2.2 tls error = lfsquota1_handle_cmd_get(ump, qk, qv); 367 1.6.2.2 tls } else 368 1.6.2.2 tls #endif 369 1.6.2.2 tls #ifdef LFS_QUOTA2 370 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA2) { 371 1.6.2.2 tls error = lfsquota2_handle_cmd_get(ump, qk, qv); 372 1.6.2.2 tls } else 373 1.6.2.2 tls #endif 374 1.6.2.2 tls panic("quota_handle_cmd_get: no support ?"); 375 1.6.2.2 tls 376 1.6.2.2 tls if (error != 0) 377 1.6.2.2 tls return error; 378 1.6.2.2 tls 379 1.6.2.2 tls return error; 380 1.6.2.2 tls } 381 1.6.2.2 tls 382 1.6.2.2 tls static int 383 1.6.2.2 tls quota_handle_cmd_put(struct mount *mp, struct lwp *l, 384 1.6.2.2 tls struct quotactl_args *args) 385 1.6.2.2 tls { 386 1.6.2.2 tls struct ulfsmount *ump = VFSTOULFS(mp); 387 1.6.2.2 tls const struct quotakey *qk; 388 1.6.2.2 tls const struct quotaval *qv; 389 1.6.2.2 tls id_t kauth_id; 390 1.6.2.2 tls int error; 391 1.6.2.2 tls 392 1.6.2.2 tls KASSERT(args->qc_op == QUOTACTL_PUT); 393 1.6.2.2 tls qk = args->u.put.qc_key; 394 1.6.2.2 tls qv = args->u.put.qc_val; 395 1.6.2.2 tls 396 1.6.2.2 tls if ((ump->um_flags & (ULFS_QUOTA|ULFS_QUOTA2)) == 0) 397 1.6.2.2 tls return EOPNOTSUPP; 398 1.6.2.2 tls 399 1.6.2.2 tls kauth_id = qk->qk_id; 400 1.6.2.2 tls if (kauth_id == QUOTA_DEFAULTID) { 401 1.6.2.2 tls kauth_id = 0; 402 1.6.2.2 tls } 403 1.6.2.2 tls 404 1.6.2.2 tls error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_FS_QUOTA, 405 1.6.2.2 tls KAUTH_REQ_SYSTEM_FS_QUOTA_MANAGE, mp, KAUTH_ARG(kauth_id), 406 1.6.2.2 tls NULL); 407 1.6.2.2 tls if (error != 0) { 408 1.6.2.2 tls return error; 409 1.6.2.2 tls } 410 1.6.2.2 tls 411 1.6.2.2 tls #ifdef LFS_QUOTA 412 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA) 413 1.6.2.2 tls error = lfsquota1_handle_cmd_put(ump, qk, qv); 414 1.6.2.2 tls else 415 1.6.2.2 tls #endif 416 1.6.2.2 tls #ifdef LFS_QUOTA2 417 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA2) { 418 1.6.2.2 tls error = lfsquota2_handle_cmd_put(ump, qk, qv); 419 1.6.2.2 tls } else 420 1.6.2.2 tls #endif 421 1.6.2.2 tls panic("quota_handle_cmd_get: no support ?"); 422 1.6.2.2 tls 423 1.6.2.2 tls if (error == ENOENT) { 424 1.6.2.2 tls error = 0; 425 1.6.2.2 tls } 426 1.6.2.2 tls 427 1.6.2.2 tls return error; 428 1.6.2.2 tls } 429 1.6.2.2 tls 430 1.6.2.2 tls static int 431 1.6.2.2 tls quota_handle_cmd_delete(struct mount *mp, struct lwp *l, 432 1.6.2.2 tls struct quotactl_args *args) 433 1.6.2.2 tls { 434 1.6.2.2 tls struct ulfsmount *ump = VFSTOULFS(mp); 435 1.6.2.2 tls const struct quotakey *qk; 436 1.6.2.2 tls id_t kauth_id; 437 1.6.2.2 tls int error; 438 1.6.2.2 tls 439 1.6.2.2 tls KASSERT(args->qc_op == QUOTACTL_DELETE); 440 1.6.2.2 tls qk = args->u.delete.qc_key; 441 1.6.2.2 tls 442 1.6.2.2 tls kauth_id = qk->qk_id; 443 1.6.2.2 tls if (kauth_id == QUOTA_DEFAULTID) { 444 1.6.2.2 tls kauth_id = 0; 445 1.6.2.2 tls } 446 1.6.2.2 tls 447 1.6.2.2 tls if ((ump->um_flags & ULFS_QUOTA2) == 0) 448 1.6.2.2 tls return EOPNOTSUPP; 449 1.6.2.2 tls 450 1.6.2.2 tls /* avoid whitespace changes */ 451 1.6.2.2 tls { 452 1.6.2.2 tls error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_FS_QUOTA, 453 1.6.2.2 tls KAUTH_REQ_SYSTEM_FS_QUOTA_MANAGE, mp, KAUTH_ARG(kauth_id), 454 1.6.2.2 tls NULL); 455 1.6.2.2 tls if (error != 0) 456 1.6.2.2 tls goto err; 457 1.6.2.2 tls #ifdef LFS_QUOTA2 458 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA2) { 459 1.6.2.2 tls error = lfsquota2_handle_cmd_delete(ump, qk); 460 1.6.2.2 tls } else 461 1.6.2.2 tls #endif 462 1.6.2.2 tls panic("quota_handle_cmd_get: no support ?"); 463 1.6.2.2 tls 464 1.6.2.2 tls if (error && error != ENOENT) 465 1.6.2.2 tls goto err; 466 1.6.2.2 tls } 467 1.6.2.2 tls 468 1.6.2.2 tls return 0; 469 1.6.2.2 tls err: 470 1.6.2.2 tls return error; 471 1.6.2.2 tls } 472 1.6.2.2 tls 473 1.6.2.2 tls static int 474 1.6.2.2 tls quota_handle_cmd_cursorget(struct mount *mp, struct lwp *l, 475 1.6.2.2 tls struct quotactl_args *args) 476 1.6.2.2 tls { 477 1.6.2.2 tls struct ulfsmount *ump = VFSTOULFS(mp); 478 1.6.2.2 tls struct quotakcursor *cursor; 479 1.6.2.2 tls struct quotakey *keys; 480 1.6.2.2 tls struct quotaval *vals; 481 1.6.2.2 tls unsigned maxnum; 482 1.6.2.2 tls unsigned *ret; 483 1.6.2.2 tls int error; 484 1.6.2.2 tls 485 1.6.2.2 tls KASSERT(args->qc_op == QUOTACTL_CURSORGET); 486 1.6.2.2 tls cursor = args->u.cursorget.qc_cursor; 487 1.6.2.2 tls keys = args->u.cursorget.qc_keys; 488 1.6.2.2 tls vals = args->u.cursorget.qc_vals; 489 1.6.2.2 tls maxnum = args->u.cursorget.qc_maxnum; 490 1.6.2.2 tls ret = args->u.cursorget.qc_ret; 491 1.6.2.2 tls 492 1.6.2.2 tls if ((ump->um_flags & ULFS_QUOTA2) == 0) 493 1.6.2.2 tls return EOPNOTSUPP; 494 1.6.2.2 tls 495 1.6.2.2 tls error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_FS_QUOTA, 496 1.6.2.2 tls KAUTH_REQ_SYSTEM_FS_QUOTA_GET, mp, NULL, NULL); 497 1.6.2.2 tls if (error) 498 1.6.2.2 tls return error; 499 1.6.2.2 tls 500 1.6.2.2 tls #ifdef LFS_QUOTA2 501 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA2) { 502 1.6.2.2 tls error = lfsquota2_handle_cmd_cursorget(ump, cursor, keys, vals, 503 1.6.2.2 tls maxnum, ret); 504 1.6.2.2 tls } else 505 1.6.2.2 tls #endif 506 1.6.2.2 tls panic("quota_handle_cmd_cursorget: no support ?"); 507 1.6.2.2 tls 508 1.6.2.2 tls return error; 509 1.6.2.2 tls } 510 1.6.2.2 tls 511 1.6.2.2 tls static int 512 1.6.2.2 tls quota_handle_cmd_cursoropen(struct mount *mp, struct lwp *l, 513 1.6.2.2 tls struct quotactl_args *args) 514 1.6.2.2 tls { 515 1.6.2.2 tls #ifdef LFS_QUOTA2 516 1.6.2.2 tls struct ulfsmount *ump = VFSTOULFS(mp); 517 1.6.2.2 tls #endif 518 1.6.2.2 tls struct quotakcursor *cursor; 519 1.6.2.2 tls int error; 520 1.6.2.2 tls 521 1.6.2.2 tls KASSERT(args->qc_op == QUOTACTL_CURSOROPEN); 522 1.6.2.2 tls cursor = args->u.cursoropen.qc_cursor; 523 1.6.2.2 tls 524 1.6.2.2 tls error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_FS_QUOTA, 525 1.6.2.2 tls KAUTH_REQ_SYSTEM_FS_QUOTA_GET, mp, NULL, NULL); 526 1.6.2.2 tls if (error) 527 1.6.2.2 tls return error; 528 1.6.2.2 tls 529 1.6.2.2 tls #ifdef LFS_QUOTA2 530 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA2) { 531 1.6.2.2 tls error = lfsquota2_handle_cmd_cursoropen(ump, cursor); 532 1.6.2.2 tls } else 533 1.6.2.2 tls #endif 534 1.6.2.2 tls error = EOPNOTSUPP; 535 1.6.2.2 tls 536 1.6.2.2 tls return error; 537 1.6.2.2 tls } 538 1.6.2.2 tls 539 1.6.2.2 tls static int 540 1.6.2.2 tls quota_handle_cmd_cursorclose(struct mount *mp, struct lwp *l, 541 1.6.2.2 tls struct quotactl_args *args) 542 1.6.2.2 tls { 543 1.6.2.2 tls #ifdef LFS_QUOTA2 544 1.6.2.2 tls struct ulfsmount *ump = VFSTOULFS(mp); 545 1.6.2.2 tls #endif 546 1.6.2.2 tls struct quotakcursor *cursor; 547 1.6.2.2 tls int error; 548 1.6.2.2 tls 549 1.6.2.2 tls KASSERT(args->qc_op == QUOTACTL_CURSORCLOSE); 550 1.6.2.2 tls cursor = args->u.cursorclose.qc_cursor; 551 1.6.2.2 tls 552 1.6.2.2 tls error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_FS_QUOTA, 553 1.6.2.2 tls KAUTH_REQ_SYSTEM_FS_QUOTA_GET, mp, NULL, NULL); 554 1.6.2.2 tls if (error) 555 1.6.2.2 tls return error; 556 1.6.2.2 tls 557 1.6.2.2 tls #ifdef LFS_QUOTA2 558 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA2) { 559 1.6.2.2 tls error = lfsquota2_handle_cmd_cursorclose(ump, cursor); 560 1.6.2.2 tls } else 561 1.6.2.2 tls #endif 562 1.6.2.2 tls error = EOPNOTSUPP; 563 1.6.2.2 tls 564 1.6.2.2 tls return error; 565 1.6.2.2 tls } 566 1.6.2.2 tls 567 1.6.2.2 tls static int 568 1.6.2.2 tls quota_handle_cmd_cursorskipidtype(struct mount *mp, struct lwp *l, 569 1.6.2.2 tls struct quotactl_args *args) 570 1.6.2.2 tls { 571 1.6.2.2 tls #ifdef LFS_QUOTA2 572 1.6.2.2 tls struct ulfsmount *ump = VFSTOULFS(mp); 573 1.6.2.2 tls #endif 574 1.6.2.2 tls struct quotakcursor *cursor; 575 1.6.2.2 tls int idtype; 576 1.6.2.2 tls int error; 577 1.6.2.2 tls 578 1.6.2.2 tls KASSERT(args->qc_op == QUOTACTL_CURSORSKIPIDTYPE); 579 1.6.2.2 tls cursor = args->u.cursorskipidtype.qc_cursor; 580 1.6.2.2 tls idtype = args->u.cursorskipidtype.qc_idtype; 581 1.6.2.2 tls 582 1.6.2.2 tls #ifdef LFS_QUOTA2 583 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA2) { 584 1.6.2.2 tls error = lfsquota2_handle_cmd_cursorskipidtype(ump, cursor, idtype); 585 1.6.2.2 tls } else 586 1.6.2.2 tls #endif 587 1.6.2.2 tls error = EOPNOTSUPP; 588 1.6.2.2 tls 589 1.6.2.2 tls return error; 590 1.6.2.2 tls } 591 1.6.2.2 tls 592 1.6.2.2 tls static int 593 1.6.2.2 tls quota_handle_cmd_cursoratend(struct mount *mp, struct lwp *l, 594 1.6.2.2 tls struct quotactl_args *args) 595 1.6.2.2 tls { 596 1.6.2.2 tls #ifdef LFS_QUOTA2 597 1.6.2.2 tls struct ulfsmount *ump = VFSTOULFS(mp); 598 1.6.2.2 tls #endif 599 1.6.2.2 tls struct quotakcursor *cursor; 600 1.6.2.2 tls int *ret; 601 1.6.2.2 tls int error; 602 1.6.2.2 tls 603 1.6.2.2 tls KASSERT(args->qc_op == QUOTACTL_CURSORATEND); 604 1.6.2.2 tls cursor = args->u.cursoratend.qc_cursor; 605 1.6.2.2 tls ret = args->u.cursoratend.qc_ret; 606 1.6.2.2 tls 607 1.6.2.2 tls #ifdef LFS_QUOTA2 608 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA2) { 609 1.6.2.2 tls error = lfsquota2_handle_cmd_cursoratend(ump, cursor, ret); 610 1.6.2.2 tls } else 611 1.6.2.2 tls #endif 612 1.6.2.2 tls error = EOPNOTSUPP; 613 1.6.2.2 tls 614 1.6.2.2 tls return error; 615 1.6.2.2 tls } 616 1.6.2.2 tls 617 1.6.2.2 tls static int 618 1.6.2.2 tls quota_handle_cmd_cursorrewind(struct mount *mp, struct lwp *l, 619 1.6.2.2 tls struct quotactl_args *args) 620 1.6.2.2 tls { 621 1.6.2.2 tls #ifdef LFS_QUOTA2 622 1.6.2.2 tls struct ulfsmount *ump = VFSTOULFS(mp); 623 1.6.2.2 tls #endif 624 1.6.2.2 tls struct quotakcursor *cursor; 625 1.6.2.2 tls int error; 626 1.6.2.2 tls 627 1.6.2.2 tls KASSERT(args->qc_op == QUOTACTL_CURSORREWIND); 628 1.6.2.2 tls cursor = args->u.cursorrewind.qc_cursor; 629 1.6.2.2 tls 630 1.6.2.2 tls #ifdef LFS_QUOTA2 631 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA2) { 632 1.6.2.2 tls error = lfsquota2_handle_cmd_cursorrewind(ump, cursor); 633 1.6.2.2 tls } else 634 1.6.2.2 tls #endif 635 1.6.2.2 tls error = EOPNOTSUPP; 636 1.6.2.2 tls 637 1.6.2.2 tls return error; 638 1.6.2.2 tls } 639 1.6.2.2 tls 640 1.6.2.2 tls static int 641 1.6.2.2 tls quota_handle_cmd_quotaon(struct mount *mp, struct lwp *l, 642 1.6.2.2 tls struct quotactl_args *args) 643 1.6.2.2 tls { 644 1.6.2.2 tls struct ulfsmount *ump = VFSTOULFS(mp); 645 1.6.2.2 tls int idtype; 646 1.6.2.2 tls const char *qfile; 647 1.6.2.2 tls int error; 648 1.6.2.2 tls 649 1.6.2.2 tls KASSERT(args->qc_op == QUOTACTL_QUOTAON); 650 1.6.2.2 tls idtype = args->u.quotaon.qc_idtype; 651 1.6.2.2 tls qfile = args->u.quotaon.qc_quotafile; 652 1.6.2.2 tls 653 1.6.2.2 tls if ((ump->um_flags & ULFS_QUOTA2) != 0) 654 1.6.2.2 tls return EBUSY; 655 1.6.2.2 tls 656 1.6.2.2 tls error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_FS_QUOTA, 657 1.6.2.2 tls KAUTH_REQ_SYSTEM_FS_QUOTA_ONOFF, mp, NULL, NULL); 658 1.6.2.2 tls if (error != 0) { 659 1.6.2.2 tls return error; 660 1.6.2.2 tls } 661 1.6.2.2 tls #ifdef LFS_QUOTA 662 1.6.2.2 tls error = lfsquota1_handle_cmd_quotaon(l, ump, idtype, qfile); 663 1.6.2.2 tls #else 664 1.6.2.2 tls error = EOPNOTSUPP; 665 1.6.2.2 tls #endif 666 1.6.2.2 tls 667 1.6.2.2 tls return error; 668 1.6.2.2 tls } 669 1.6.2.2 tls 670 1.6.2.2 tls static int 671 1.6.2.2 tls quota_handle_cmd_quotaoff(struct mount *mp, struct lwp *l, 672 1.6.2.2 tls struct quotactl_args *args) 673 1.6.2.2 tls { 674 1.6.2.2 tls struct ulfsmount *ump = VFSTOULFS(mp); 675 1.6.2.2 tls int idtype; 676 1.6.2.2 tls int error; 677 1.6.2.2 tls 678 1.6.2.2 tls KASSERT(args->qc_op == QUOTACTL_QUOTAOFF); 679 1.6.2.2 tls idtype = args->u.quotaoff.qc_idtype; 680 1.6.2.2 tls 681 1.6.2.2 tls if ((ump->um_flags & ULFS_QUOTA2) != 0) 682 1.6.2.2 tls return EOPNOTSUPP; 683 1.6.2.2 tls 684 1.6.2.2 tls error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_FS_QUOTA, 685 1.6.2.2 tls KAUTH_REQ_SYSTEM_FS_QUOTA_ONOFF, mp, NULL, NULL); 686 1.6.2.2 tls if (error != 0) { 687 1.6.2.2 tls return error; 688 1.6.2.2 tls } 689 1.6.2.2 tls #ifdef LFS_QUOTA 690 1.6.2.2 tls error = lfsquota1_handle_cmd_quotaoff(l, ump, idtype); 691 1.6.2.2 tls #else 692 1.6.2.2 tls error = EOPNOTSUPP; 693 1.6.2.2 tls #endif 694 1.6.2.2 tls 695 1.6.2.2 tls return error; 696 1.6.2.2 tls } 697 1.6.2.2 tls 698 1.6.2.2 tls /* 699 1.6.2.2 tls * Initialize the quota system. 700 1.6.2.2 tls */ 701 1.6.2.2 tls void 702 1.6.2.2 tls lfs_dqinit(void) 703 1.6.2.2 tls { 704 1.6.2.2 tls 705 1.6.2.2 tls mutex_init(&lfs_dqlock, MUTEX_DEFAULT, IPL_NONE); 706 1.6.2.2 tls cv_init(&lfs_dqcv, "quota"); 707 1.6.2.2 tls dqhashtbl = hashinit(desiredvnodes, HASH_LIST, true, &dqhash); 708 1.6.2.2 tls dquot_cache = pool_cache_init(sizeof(struct dquot), 0, 0, 0, "lfsdq", 709 1.6.2.2 tls NULL, IPL_NONE, NULL, NULL, NULL); 710 1.6.2.2 tls } 711 1.6.2.2 tls 712 1.6.2.2 tls void 713 1.6.2.2 tls lfs_dqreinit(void) 714 1.6.2.2 tls { 715 1.6.2.2 tls struct dquot *dq; 716 1.6.2.2 tls struct dqhashhead *oldhash, *hash; 717 1.6.2.2 tls struct vnode *dqvp; 718 1.6.2.2 tls u_long oldmask, mask, hashval; 719 1.6.2.2 tls int i; 720 1.6.2.2 tls 721 1.6.2.2 tls hash = hashinit(desiredvnodes, HASH_LIST, true, &mask); 722 1.6.2.2 tls mutex_enter(&lfs_dqlock); 723 1.6.2.2 tls oldhash = dqhashtbl; 724 1.6.2.2 tls oldmask = dqhash; 725 1.6.2.2 tls dqhashtbl = hash; 726 1.6.2.2 tls dqhash = mask; 727 1.6.2.2 tls for (i = 0; i <= oldmask; i++) { 728 1.6.2.2 tls while ((dq = LIST_FIRST(&oldhash[i])) != NULL) { 729 1.6.2.2 tls dqvp = dq->dq_ump->um_quotas[dq->dq_type]; 730 1.6.2.2 tls LIST_REMOVE(dq, dq_hash); 731 1.6.2.2 tls hashval = DQHASH(dqvp, dq->dq_id); 732 1.6.2.2 tls LIST_INSERT_HEAD(&dqhashtbl[hashval], dq, dq_hash); 733 1.6.2.2 tls } 734 1.6.2.2 tls } 735 1.6.2.2 tls mutex_exit(&lfs_dqlock); 736 1.6.2.2 tls hashdone(oldhash, HASH_LIST, oldmask); 737 1.6.2.2 tls } 738 1.6.2.2 tls 739 1.6.2.2 tls /* 740 1.6.2.2 tls * Free resources held by quota system. 741 1.6.2.2 tls */ 742 1.6.2.2 tls void 743 1.6.2.2 tls lfs_dqdone(void) 744 1.6.2.2 tls { 745 1.6.2.2 tls 746 1.6.2.2 tls pool_cache_destroy(dquot_cache); 747 1.6.2.2 tls hashdone(dqhashtbl, HASH_LIST, dqhash); 748 1.6.2.2 tls cv_destroy(&lfs_dqcv); 749 1.6.2.2 tls mutex_destroy(&lfs_dqlock); 750 1.6.2.2 tls } 751 1.6.2.2 tls 752 1.6.2.2 tls /* 753 1.6.2.2 tls * Set up the quotas for an inode. 754 1.6.2.2 tls * 755 1.6.2.2 tls * This routine completely defines the semantics of quotas. 756 1.6.2.2 tls * If other criteria want to be used to establish quotas, the 757 1.6.2.2 tls * ULFS_MAXQUOTAS value in quotas.h should be increased, and the 758 1.6.2.2 tls * additional dquots set up here. 759 1.6.2.2 tls */ 760 1.6.2.2 tls int 761 1.6.2.2 tls lfs_getinoquota(struct inode *ip) 762 1.6.2.2 tls { 763 1.6.2.2 tls struct ulfsmount *ump = ip->i_ump; 764 1.6.2.2 tls struct vnode *vp = ITOV(ip); 765 1.6.2.2 tls int i, error; 766 1.6.2.2 tls u_int32_t ino_ids[ULFS_MAXQUOTAS]; 767 1.6.2.2 tls 768 1.6.2.2 tls /* 769 1.6.2.2 tls * To avoid deadlocks never update quotas for quota files 770 1.6.2.2 tls * on the same file system 771 1.6.2.2 tls */ 772 1.6.2.2 tls for (i = 0; i < ULFS_MAXQUOTAS; i++) 773 1.6.2.2 tls if (vp == ump->um_quotas[i]) 774 1.6.2.2 tls return 0; 775 1.6.2.2 tls 776 1.6.2.2 tls ino_ids[ULFS_USRQUOTA] = ip->i_uid; 777 1.6.2.2 tls ino_ids[ULFS_GRPQUOTA] = ip->i_gid; 778 1.6.2.2 tls for (i = 0; i < ULFS_MAXQUOTAS; i++) { 779 1.6.2.2 tls /* 780 1.6.2.2 tls * If the file id changed the quota needs update. 781 1.6.2.2 tls */ 782 1.6.2.2 tls if (ip->i_dquot[i] != NODQUOT && 783 1.6.2.2 tls ip->i_dquot[i]->dq_id != ino_ids[i]) { 784 1.6.2.2 tls lfs_dqrele(ITOV(ip), ip->i_dquot[i]); 785 1.6.2.2 tls ip->i_dquot[i] = NODQUOT; 786 1.6.2.2 tls } 787 1.6.2.2 tls /* 788 1.6.2.2 tls * Set up the quota based on file id. 789 1.6.2.2 tls * ENODEV means that quotas are not enabled. 790 1.6.2.2 tls */ 791 1.6.2.2 tls if (ip->i_dquot[i] == NODQUOT && 792 1.6.2.2 tls (error = lfs_dqget(vp, ino_ids[i], ump, i, &ip->i_dquot[i])) && 793 1.6.2.2 tls error != ENODEV) 794 1.6.2.2 tls return (error); 795 1.6.2.2 tls } 796 1.6.2.2 tls return 0; 797 1.6.2.2 tls } 798 1.6.2.2 tls 799 1.6.2.2 tls /* 800 1.6.2.2 tls * Obtain a dquot structure for the specified identifier and quota file 801 1.6.2.2 tls * reading the information from the file if necessary. 802 1.6.2.2 tls */ 803 1.6.2.2 tls int 804 1.6.2.2 tls lfs_dqget(struct vnode *vp, u_long id, struct ulfsmount *ump, int type, 805 1.6.2.2 tls struct dquot **dqp) 806 1.6.2.2 tls { 807 1.6.2.2 tls struct dquot *dq, *ndq; 808 1.6.2.2 tls struct dqhashhead *dqh; 809 1.6.2.2 tls struct vnode *dqvp; 810 1.6.2.2 tls int error = 0; /* XXX gcc */ 811 1.6.2.2 tls 812 1.6.2.2 tls /* Lock to see an up to date value for QTF_CLOSING. */ 813 1.6.2.2 tls mutex_enter(&lfs_dqlock); 814 1.6.2.2 tls if ((ump->um_flags & (ULFS_QUOTA|ULFS_QUOTA2)) == 0) { 815 1.6.2.2 tls mutex_exit(&lfs_dqlock); 816 1.6.2.2 tls *dqp = NODQUOT; 817 1.6.2.2 tls return (ENODEV); 818 1.6.2.2 tls } 819 1.6.2.2 tls dqvp = ump->um_quotas[type]; 820 1.6.2.2 tls #ifdef LFS_QUOTA 821 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA) { 822 1.6.2.2 tls if (dqvp == NULLVP || (ump->umq1_qflags[type] & QTF_CLOSING)) { 823 1.6.2.2 tls mutex_exit(&lfs_dqlock); 824 1.6.2.2 tls *dqp = NODQUOT; 825 1.6.2.2 tls return (ENODEV); 826 1.6.2.2 tls } 827 1.6.2.2 tls } 828 1.6.2.2 tls #endif 829 1.6.2.2 tls #ifdef LFS_QUOTA2 830 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA2) { 831 1.6.2.2 tls if (dqvp == NULLVP) { 832 1.6.2.2 tls mutex_exit(&lfs_dqlock); 833 1.6.2.2 tls *dqp = NODQUOT; 834 1.6.2.2 tls return (ENODEV); 835 1.6.2.2 tls } 836 1.6.2.2 tls } 837 1.6.2.2 tls #endif 838 1.6.2.2 tls KASSERT(dqvp != vp); 839 1.6.2.2 tls /* 840 1.6.2.2 tls * Check the cache first. 841 1.6.2.2 tls */ 842 1.6.2.2 tls dqh = &dqhashtbl[DQHASH(dqvp, id)]; 843 1.6.2.2 tls LIST_FOREACH(dq, dqh, dq_hash) { 844 1.6.2.2 tls if (dq->dq_id != id || 845 1.6.2.2 tls dq->dq_ump->um_quotas[dq->dq_type] != dqvp) 846 1.6.2.2 tls continue; 847 1.6.2.2 tls KASSERT(dq->dq_cnt > 0); 848 1.6.2.2 tls lfs_dqref(dq); 849 1.6.2.2 tls mutex_exit(&lfs_dqlock); 850 1.6.2.2 tls *dqp = dq; 851 1.6.2.2 tls return (0); 852 1.6.2.2 tls } 853 1.6.2.2 tls /* 854 1.6.2.2 tls * Not in cache, allocate a new one. 855 1.6.2.2 tls */ 856 1.6.2.2 tls mutex_exit(&lfs_dqlock); 857 1.6.2.2 tls ndq = pool_cache_get(dquot_cache, PR_WAITOK); 858 1.6.2.2 tls /* 859 1.6.2.2 tls * Initialize the contents of the dquot structure. 860 1.6.2.2 tls */ 861 1.6.2.2 tls memset((char *)ndq, 0, sizeof *ndq); 862 1.6.2.2 tls ndq->dq_flags = 0; 863 1.6.2.2 tls ndq->dq_id = id; 864 1.6.2.2 tls ndq->dq_ump = ump; 865 1.6.2.2 tls ndq->dq_type = type; 866 1.6.2.2 tls mutex_init(&ndq->dq_interlock, MUTEX_DEFAULT, IPL_NONE); 867 1.6.2.2 tls mutex_enter(&lfs_dqlock); 868 1.6.2.2 tls dqh = &dqhashtbl[DQHASH(dqvp, id)]; 869 1.6.2.2 tls LIST_FOREACH(dq, dqh, dq_hash) { 870 1.6.2.2 tls if (dq->dq_id != id || 871 1.6.2.2 tls dq->dq_ump->um_quotas[dq->dq_type] != dqvp) 872 1.6.2.2 tls continue; 873 1.6.2.2 tls /* 874 1.6.2.2 tls * Another thread beat us allocating this dquot. 875 1.6.2.2 tls */ 876 1.6.2.2 tls KASSERT(dq->dq_cnt > 0); 877 1.6.2.2 tls lfs_dqref(dq); 878 1.6.2.2 tls mutex_exit(&lfs_dqlock); 879 1.6.2.2 tls mutex_destroy(&ndq->dq_interlock); 880 1.6.2.2 tls pool_cache_put(dquot_cache, ndq); 881 1.6.2.2 tls *dqp = dq; 882 1.6.2.2 tls return 0; 883 1.6.2.2 tls } 884 1.6.2.2 tls dq = ndq; 885 1.6.2.2 tls LIST_INSERT_HEAD(dqh, dq, dq_hash); 886 1.6.2.2 tls lfs_dqref(dq); 887 1.6.2.2 tls mutex_enter(&dq->dq_interlock); 888 1.6.2.2 tls mutex_exit(&lfs_dqlock); 889 1.6.2.2 tls #ifdef LFS_QUOTA 890 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA) 891 1.6.2.2 tls error = lfs_dq1get(dqvp, id, ump, type, dq); 892 1.6.2.2 tls #endif 893 1.6.2.2 tls #ifdef LFS_QUOTA2 894 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA2) 895 1.6.2.2 tls error = lfs_dq2get(dqvp, id, ump, type, dq); 896 1.6.2.2 tls #endif 897 1.6.2.2 tls /* 898 1.6.2.2 tls * I/O error in reading quota file, release 899 1.6.2.2 tls * quota structure and reflect problem to caller. 900 1.6.2.2 tls */ 901 1.6.2.2 tls if (error) { 902 1.6.2.2 tls mutex_enter(&lfs_dqlock); 903 1.6.2.2 tls LIST_REMOVE(dq, dq_hash); 904 1.6.2.2 tls mutex_exit(&lfs_dqlock); 905 1.6.2.2 tls mutex_exit(&dq->dq_interlock); 906 1.6.2.2 tls lfs_dqrele(vp, dq); 907 1.6.2.2 tls *dqp = NODQUOT; 908 1.6.2.2 tls return (error); 909 1.6.2.2 tls } 910 1.6.2.2 tls mutex_exit(&dq->dq_interlock); 911 1.6.2.2 tls *dqp = dq; 912 1.6.2.2 tls return (0); 913 1.6.2.2 tls } 914 1.6.2.2 tls 915 1.6.2.2 tls /* 916 1.6.2.2 tls * Obtain a reference to a dquot. 917 1.6.2.2 tls */ 918 1.6.2.2 tls void 919 1.6.2.2 tls lfs_dqref(struct dquot *dq) 920 1.6.2.2 tls { 921 1.6.2.2 tls 922 1.6.2.2 tls KASSERT(mutex_owned(&lfs_dqlock)); 923 1.6.2.2 tls dq->dq_cnt++; 924 1.6.2.2 tls KASSERT(dq->dq_cnt > 0); 925 1.6.2.2 tls } 926 1.6.2.2 tls 927 1.6.2.2 tls /* 928 1.6.2.2 tls * Release a reference to a dquot. 929 1.6.2.2 tls */ 930 1.6.2.2 tls void 931 1.6.2.2 tls lfs_dqrele(struct vnode *vp, struct dquot *dq) 932 1.6.2.2 tls { 933 1.6.2.2 tls 934 1.6.2.2 tls if (dq == NODQUOT) 935 1.6.2.2 tls return; 936 1.6.2.2 tls mutex_enter(&dq->dq_interlock); 937 1.6.2.2 tls for (;;) { 938 1.6.2.2 tls mutex_enter(&lfs_dqlock); 939 1.6.2.2 tls if (dq->dq_cnt > 1) { 940 1.6.2.2 tls dq->dq_cnt--; 941 1.6.2.2 tls mutex_exit(&lfs_dqlock); 942 1.6.2.2 tls mutex_exit(&dq->dq_interlock); 943 1.6.2.2 tls return; 944 1.6.2.2 tls } 945 1.6.2.2 tls if ((dq->dq_flags & DQ_MOD) == 0) 946 1.6.2.2 tls break; 947 1.6.2.2 tls mutex_exit(&lfs_dqlock); 948 1.6.2.2 tls #ifdef LFS_QUOTA 949 1.6.2.2 tls if (dq->dq_ump->um_flags & ULFS_QUOTA) 950 1.6.2.2 tls (void) lfs_dq1sync(vp, dq); 951 1.6.2.2 tls #endif 952 1.6.2.2 tls #ifdef LFS_QUOTA2 953 1.6.2.2 tls if (dq->dq_ump->um_flags & ULFS_QUOTA2) 954 1.6.2.2 tls (void) lfs_dq2sync(vp, dq); 955 1.6.2.2 tls #endif 956 1.6.2.2 tls } 957 1.6.2.2 tls KASSERT(dq->dq_cnt == 1 && (dq->dq_flags & DQ_MOD) == 0); 958 1.6.2.2 tls LIST_REMOVE(dq, dq_hash); 959 1.6.2.2 tls mutex_exit(&lfs_dqlock); 960 1.6.2.2 tls mutex_exit(&dq->dq_interlock); 961 1.6.2.2 tls mutex_destroy(&dq->dq_interlock); 962 1.6.2.2 tls pool_cache_put(dquot_cache, dq); 963 1.6.2.2 tls } 964 1.6.2.2 tls 965 1.6.2.2 tls int 966 1.6.2.2 tls lfs_qsync(struct mount *mp) 967 1.6.2.2 tls { 968 1.6.2.2 tls struct ulfsmount *ump = VFSTOULFS(mp); 969 1.6.2.2 tls 970 1.6.2.2 tls /* avoid compiler warning when quotas aren't enabled */ 971 1.6.2.2 tls (void)ump; 972 1.6.2.2 tls 973 1.6.2.2 tls #ifdef LFS_QUOTA 974 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA) 975 1.6.2.2 tls return lfs_q1sync(mp); 976 1.6.2.2 tls #endif 977 1.6.2.2 tls #ifdef LFS_QUOTA2 978 1.6.2.2 tls if (ump->um_flags & ULFS_QUOTA2) 979 1.6.2.2 tls return lfs_q2sync(mp); 980 1.6.2.2 tls #endif 981 1.6.2.2 tls return 0; 982 1.6.2.2 tls } 983 1.6.2.2 tls 984 1.6.2.2 tls #ifdef DIAGNOSTIC 985 1.6.2.2 tls /* 986 1.6.2.2 tls * Check the hash chains for stray dquot's. 987 1.6.2.2 tls */ 988 1.6.2.2 tls void 989 1.6.2.2 tls lfs_dqflush(struct vnode *vp) 990 1.6.2.2 tls { 991 1.6.2.2 tls struct dquot *dq; 992 1.6.2.2 tls int i; 993 1.6.2.2 tls 994 1.6.2.2 tls mutex_enter(&lfs_dqlock); 995 1.6.2.2 tls for (i = 0; i <= dqhash; i++) 996 1.6.2.2 tls LIST_FOREACH(dq, &dqhashtbl[i], dq_hash) 997 1.6.2.2 tls KASSERT(dq->dq_ump->um_quotas[dq->dq_type] != vp); 998 1.6.2.2 tls mutex_exit(&lfs_dqlock); 999 1.6.2.2 tls } 1000 1.6.2.2 tls #endif 1001
Indexes created Wed Oct 29 12:09:47 GMT 2025