module/zfs/zfs_quota.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or https://opensource.org/licenses/CDDL-1.0.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright (c) 2011 Pawel Jakub Dawidek
  24  * Copyright (c) 2012, 2015, 2018 by Delphix. All rights reserved.
  25  * Copyright (c) 2014 Integros [integros.com]
  26  * Copyright 2016 Nexenta Systems, Inc. All rights reserved.
  27  */
  28
  29 /* Portions Copyright 2010 Robert Milkowski */
  30
  31 #include <sys/avl.h>
  32 #include <sys/dmu_objset.h>
  33 #include <sys/sa.h>
  34 #include <sys/sa_impl.h>
  35 #include <sys/zap.h>
  36 #include <sys/zfs_project.h>
  37 #include <sys/zfs_quota.h>
  38 #include <sys/zfs_znode.h>
  39
  40 int
  41 zpl_get_file_info(dmu_object_type_t bonustype, const void *data,
  42     zfs_file_info_t *zoi)
  43 {
  44         /*
  45          * Is it a valid type of object to track?
  46          */
  47         if (bonustype != DMU_OT_ZNODE && bonustype != DMU_OT_SA)
  48                 return (SET_ERROR(ENOENT));
  49
  50         zoi->zfi_project = ZFS_DEFAULT_PROJID;
  51
  52         /*
  53          * If we have a NULL data pointer
  54          * then assume the id's aren't changing and
  55          * return EEXIST to the dmu to let it know to
  56          * use the same ids
  57          */
  58         if (data == NULL)
  59                 return (SET_ERROR(EEXIST));
  60
  61         if (bonustype == DMU_OT_ZNODE) {
  62                 const znode_phys_t *znp = data;
  63                 zoi->zfi_user = znp->zp_uid;
  64                 zoi->zfi_group = znp->zp_gid;
  65                 zoi->zfi_generation = znp->zp_gen;
  66                 return (0);
  67         }
  68
  69         const sa_hdr_phys_t *sap = data;
  70         if (sap->sa_magic == 0) {
  71                 /*
  72                  * This should only happen for newly created files
  73                  * that haven't had the znode data filled in yet.
  74                  */
  75                 zoi->zfi_user = 0;
  76                 zoi->zfi_group = 0;
  77                 zoi->zfi_generation = 0;
  78                 return (0);
  79         }
  80
  81         sa_hdr_phys_t sa = *sap;
  82         boolean_t swap = B_FALSE;
  83         if (sa.sa_magic == BSWAP_32(SA_MAGIC)) {
  84                 sa.sa_magic = SA_MAGIC;
  85                 sa.sa_layout_info = BSWAP_16(sa.sa_layout_info);
  86                 swap = B_TRUE;
  87         }
  88         VERIFY3U(sa.sa_magic, ==, SA_MAGIC);
  89
  90         int hdrsize = sa_hdrsize(&sa);
  91         VERIFY3U(hdrsize, >=, sizeof (sa_hdr_phys_t));
  92
  93         uintptr_t data_after_hdr = (uintptr_t)data + hdrsize;
  94         zoi->zfi_user = *((uint64_t *)(data_after_hdr + SA_UID_OFFSET));
  95         zoi->zfi_group = *((uint64_t *)(data_after_hdr + SA_GID_OFFSET));
  96         zoi->zfi_generation = *((uint64_t *)(data_after_hdr + SA_GEN_OFFSET));
  97         uint64_t flags = *((uint64_t *)(data_after_hdr + SA_FLAGS_OFFSET));
  98         if (swap)
  99                 flags = BSWAP_64(flags);
 100
 101         if (flags & ZFS_PROJID) {
 102                 zoi->zfi_project =
 103                     *((uint64_t *)(data_after_hdr + SA_PROJID_OFFSET));
 104         }
 105
 106         if (swap) {
 107                 zoi->zfi_user = BSWAP_64(zoi->zfi_user);
 108                 zoi->zfi_group = BSWAP_64(zoi->zfi_group);
 109                 zoi->zfi_project = BSWAP_64(zoi->zfi_project);
 110                 zoi->zfi_generation = BSWAP_64(zoi->zfi_generation);
 111         }
 112         return (0);
 113 }
 114
 115 static void
 116 fuidstr_to_sid(zfsvfs_t *zfsvfs, const char *fuidstr,
 117     char *domainbuf, int buflen, uid_t *ridp)
 118 {
 119         uint64_t fuid;
 120         const char *domain;
 121
 122         fuid = zfs_strtonum(fuidstr, NULL);
 123
 124         domain = zfs_fuid_find_by_idx(zfsvfs, FUID_INDEX(fuid));
 125         if (domain)
 126                 (void) strlcpy(domainbuf, domain, buflen);
 127         else
 128                 domainbuf[0] = '\0';
 129         *ridp = FUID_RID(fuid);
 130 }
 131
 132 static uint64_t
 133 zfs_userquota_prop_to_obj(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type)
 134 {
 135         switch (type) {
 136         case ZFS_PROP_USERUSED:
 137         case ZFS_PROP_USEROBJUSED:
 138                 return (DMU_USERUSED_OBJECT);
 139         case ZFS_PROP_GROUPUSED:
 140         case ZFS_PROP_GROUPOBJUSED:
 141                 return (DMU_GROUPUSED_OBJECT);
 142         case ZFS_PROP_PROJECTUSED:
 143         case ZFS_PROP_PROJECTOBJUSED:
 144                 return (DMU_PROJECTUSED_OBJECT);
 145         case ZFS_PROP_USERQUOTA:
 146                 return (zfsvfs->z_userquota_obj);
 147         case ZFS_PROP_GROUPQUOTA:
 148                 return (zfsvfs->z_groupquota_obj);
 149         case ZFS_PROP_USEROBJQUOTA:
 150                 return (zfsvfs->z_userobjquota_obj);
 151         case ZFS_PROP_GROUPOBJQUOTA:
 152                 return (zfsvfs->z_groupobjquota_obj);
 153         case ZFS_PROP_PROJECTQUOTA:
 154                 return (zfsvfs->z_projectquota_obj);
 155         case ZFS_PROP_PROJECTOBJQUOTA:
 156                 return (zfsvfs->z_projectobjquota_obj);
 157         default:
 158                 return (ZFS_NO_OBJECT);
 159         }
 160 }
 161
 162 int
 163 zfs_userspace_many(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
 164     uint64_t *cookiep, void *vbuf, uint64_t *bufsizep)
 165 {
 166         int error;
 167         zap_cursor_t zc;
 168         zap_attribute_t za;
 169         zfs_useracct_t *buf = vbuf;
 170         uint64_t obj;
 171         int offset = 0;
 172
 173         if (!dmu_objset_userspace_present(zfsvfs->z_os))
 174                 return (SET_ERROR(ENOTSUP));
 175
 176         if ((type == ZFS_PROP_PROJECTQUOTA || type == ZFS_PROP_PROJECTUSED ||
 177             type == ZFS_PROP_PROJECTOBJQUOTA ||
 178             type == ZFS_PROP_PROJECTOBJUSED) &&
 179             !dmu_objset_projectquota_present(zfsvfs->z_os))
 180                 return (SET_ERROR(ENOTSUP));
 181
 182         if ((type == ZFS_PROP_USEROBJUSED || type == ZFS_PROP_GROUPOBJUSED ||
 183             type == ZFS_PROP_USEROBJQUOTA || type == ZFS_PROP_GROUPOBJQUOTA ||
 184             type == ZFS_PROP_PROJECTOBJUSED ||
 185             type == ZFS_PROP_PROJECTOBJQUOTA) &&
 186             !dmu_objset_userobjspace_present(zfsvfs->z_os))
 187                 return (SET_ERROR(ENOTSUP));
 188
 189         obj = zfs_userquota_prop_to_obj(zfsvfs, type);
 190         if (obj == ZFS_NO_OBJECT) {
 191                 *bufsizep = 0;
 192                 return (0);
 193         }
 194
 195         if (type == ZFS_PROP_USEROBJUSED || type == ZFS_PROP_GROUPOBJUSED ||
 196             type == ZFS_PROP_PROJECTOBJUSED)
 197                 offset = DMU_OBJACCT_PREFIX_LEN;
 198
 199         for (zap_cursor_init_serialized(&zc, zfsvfs->z_os, obj, *cookiep);
 200             (error = zap_cursor_retrieve(&zc, &za)) == 0;
 201             zap_cursor_advance(&zc)) {
 202                 if ((uintptr_t)buf - (uintptr_t)vbuf + sizeof (zfs_useracct_t) >
 203                     *bufsizep)
 204                         break;
 205
 206                 /*
 207                  * skip object quota (with zap name prefix DMU_OBJACCT_PREFIX)
 208                  * when dealing with block quota and vice versa.
 209                  */
 210                 if ((offset > 0) != (strncmp(za.za_name, DMU_OBJACCT_PREFIX,
 211                     DMU_OBJACCT_PREFIX_LEN) == 0))
 212                         continue;
 213
 214                 fuidstr_to_sid(zfsvfs, za.za_name + offset,
 215                     buf->zu_domain, sizeof (buf->zu_domain), &buf->zu_rid);
 216
 217                 buf->zu_space = za.za_first_integer;
 218                 buf++;
 219         }
 220         if (error == ENOENT)
 221                 error = 0;
 222
 223         ASSERT3U((uintptr_t)buf - (uintptr_t)vbuf, <=, *bufsizep);
 224         *bufsizep = (uintptr_t)buf - (uintptr_t)vbuf;
 225         *cookiep = zap_cursor_serialize(&zc);
 226         zap_cursor_fini(&zc);
 227         return (error);
 228 }
 229
 230 int
 231 zfs_userspace_one(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
 232     const char *domain, uint64_t rid, uint64_t *valp)
 233 {
 234         char buf[20 + DMU_OBJACCT_PREFIX_LEN];
 235         int offset = 0;
 236         int err;
 237         uint64_t obj;
 238
 239         *valp = 0;
 240
 241         if (!dmu_objset_userspace_present(zfsvfs->z_os))
 242                 return (SET_ERROR(ENOTSUP));
 243
 244         if ((type == ZFS_PROP_USEROBJUSED || type == ZFS_PROP_GROUPOBJUSED ||
 245             type == ZFS_PROP_USEROBJQUOTA || type == ZFS_PROP_GROUPOBJQUOTA ||
 246             type == ZFS_PROP_PROJECTOBJUSED ||
 247             type == ZFS_PROP_PROJECTOBJQUOTA) &&
 248             !dmu_objset_userobjspace_present(zfsvfs->z_os))
 249                 return (SET_ERROR(ENOTSUP));
 250
 251         if (type == ZFS_PROP_PROJECTQUOTA || type == ZFS_PROP_PROJECTUSED ||
 252             type == ZFS_PROP_PROJECTOBJQUOTA ||
 253             type == ZFS_PROP_PROJECTOBJUSED) {
 254                 if (!dmu_objset_projectquota_present(zfsvfs->z_os))
 255                         return (SET_ERROR(ENOTSUP));
 256                 if (!zpl_is_valid_projid(rid))
 257                         return (SET_ERROR(EINVAL));
 258         }
 259
 260         obj = zfs_userquota_prop_to_obj(zfsvfs, type);
 261         if (obj == ZFS_NO_OBJECT)
 262                 return (0);
 263
 264         if (type == ZFS_PROP_USEROBJUSED || type == ZFS_PROP_GROUPOBJUSED ||
 265             type == ZFS_PROP_PROJECTOBJUSED) {
 266                 strlcpy(buf, DMU_OBJACCT_PREFIX, DMU_OBJACCT_PREFIX_LEN + 1);
 267                 offset = DMU_OBJACCT_PREFIX_LEN;
 268         }
 269
 270         err = zfs_id_to_fuidstr(zfsvfs, domain, rid, buf + offset,
 271             sizeof (buf) - offset, B_FALSE);
 272         if (err)
 273                 return (err);
 274
 275         err = zap_lookup(zfsvfs->z_os, obj, buf, 8, 1, valp);
 276         if (err == ENOENT)
 277                 err = 0;
 278         return (err);
 279 }
 280
 281 int
 282 zfs_set_userquota(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
 283     const char *domain, uint64_t rid, uint64_t quota)
 284 {
 285         char buf[32];
 286         int err;
 287         dmu_tx_t *tx;
 288         uint64_t *objp;
 289         boolean_t fuid_dirtied;
 290
 291         if (zfsvfs->z_version < ZPL_VERSION_USERSPACE)
 292                 return (SET_ERROR(ENOTSUP));
 293
 294         switch (type) {
 295         case ZFS_PROP_USERQUOTA:
 296                 objp = &zfsvfs->z_userquota_obj;
 297                 break;
 298         case ZFS_PROP_GROUPQUOTA:
 299                 objp = &zfsvfs->z_groupquota_obj;
 300                 break;
 301         case ZFS_PROP_USEROBJQUOTA:
 302                 objp = &zfsvfs->z_userobjquota_obj;
 303                 break;
 304         case ZFS_PROP_GROUPOBJQUOTA:
 305                 objp = &zfsvfs->z_groupobjquota_obj;
 306                 break;
 307         case ZFS_PROP_PROJECTQUOTA:
 308                 if (!dmu_objset_projectquota_enabled(zfsvfs->z_os))
 309                         return (SET_ERROR(ENOTSUP));
 310                 if (!zpl_is_valid_projid(rid))
 311                         return (SET_ERROR(EINVAL));
 312
 313                 objp = &zfsvfs->z_projectquota_obj;
 314                 break;
 315         case ZFS_PROP_PROJECTOBJQUOTA:
 316                 if (!dmu_objset_projectquota_enabled(zfsvfs->z_os))
 317                         return (SET_ERROR(ENOTSUP));
 318                 if (!zpl_is_valid_projid(rid))
 319                         return (SET_ERROR(EINVAL));
 320
 321                 objp = &zfsvfs->z_projectobjquota_obj;
 322                 break;
 323         default:
 324                 return (SET_ERROR(EINVAL));
 325         }
 326
 327         err = zfs_id_to_fuidstr(zfsvfs, domain, rid, buf, sizeof (buf), B_TRUE);
 328         if (err)
 329                 return (err);
 330         fuid_dirtied = zfsvfs->z_fuid_dirty;
 331
 332         tx = dmu_tx_create(zfsvfs->z_os);
 333         dmu_tx_hold_zap(tx, *objp ? *objp : DMU_NEW_OBJECT, B_TRUE, NULL);
 334         if (*objp == 0) {
 335                 dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, B_TRUE,
 336                     zfs_userquota_prop_prefixes[type]);
 337         }
 338         if (fuid_dirtied)
 339                 zfs_fuid_txhold(zfsvfs, tx);
 340         err = dmu_tx_assign(tx, TXG_WAIT);
 341         if (err) {
 342                 dmu_tx_abort(tx);
 343                 return (err);
 344         }
 345
 346         mutex_enter(&zfsvfs->z_lock);
 347         if (*objp == 0) {
 348                 *objp = zap_create(zfsvfs->z_os, DMU_OT_USERGROUP_QUOTA,
 349                     DMU_OT_NONE, 0, tx);
 350                 VERIFY(0 == zap_add(zfsvfs->z_os, MASTER_NODE_OBJ,
 351                     zfs_userquota_prop_prefixes[type], 8, 1, objp, tx));
 352         }
 353         mutex_exit(&zfsvfs->z_lock);
 354
 355         if (quota == 0) {
 356                 err = zap_remove(zfsvfs->z_os, *objp, buf, tx);
 357                 if (err == ENOENT)
 358                         err = 0;
 359         } else {
 360                 err = zap_update(zfsvfs->z_os, *objp, buf, 8, 1, &quota, tx);
 361         }
 362         ASSERT(err == 0);
 363         if (fuid_dirtied)
 364                 zfs_fuid_sync(zfsvfs, tx);
 365         dmu_tx_commit(tx);
 366         return (err);
 367 }
 368
 369 boolean_t
 370 zfs_id_overobjquota(zfsvfs_t *zfsvfs, uint64_t usedobj, uint64_t id)
 371 {
 372         char buf[20 + DMU_OBJACCT_PREFIX_LEN];
 373         uint64_t used, quota, quotaobj;
 374         int err;
 375
 376         if (!dmu_objset_userobjspace_present(zfsvfs->z_os)) {
 377                 if (dmu_objset_userobjspace_upgradable(zfsvfs->z_os)) {
 378                         dsl_pool_config_enter(
 379                             dmu_objset_pool(zfsvfs->z_os), FTAG);
 380                         dmu_objset_id_quota_upgrade(zfsvfs->z_os);
 381                         dsl_pool_config_exit(
 382                             dmu_objset_pool(zfsvfs->z_os), FTAG);
 383                 }
 384                 return (B_FALSE);
 385         }
 386
 387         if (usedobj == DMU_PROJECTUSED_OBJECT) {
 388                 if (!dmu_objset_projectquota_present(zfsvfs->z_os)) {
 389                         if (dmu_objset_projectquota_upgradable(zfsvfs->z_os)) {
 390                                 dsl_pool_config_enter(
 391                                     dmu_objset_pool(zfsvfs->z_os), FTAG);
 392                                 dmu_objset_id_quota_upgrade(zfsvfs->z_os);
 393                                 dsl_pool_config_exit(
 394                                     dmu_objset_pool(zfsvfs->z_os), FTAG);
 395                         }
 396                         return (B_FALSE);
 397                 }
 398                 quotaobj = zfsvfs->z_projectobjquota_obj;
 399         } else if (usedobj == DMU_USERUSED_OBJECT) {
 400                 quotaobj = zfsvfs->z_userobjquota_obj;
 401         } else if (usedobj == DMU_GROUPUSED_OBJECT) {
 402                 quotaobj = zfsvfs->z_groupobjquota_obj;
 403         } else {
 404                 return (B_FALSE);
 405         }
 406         if (quotaobj == 0 || zfsvfs->z_replay)
 407                 return (B_FALSE);
 408
 409         (void) snprintf(buf, sizeof (buf), "%llx", (longlong_t)id);
 410         err = zap_lookup(zfsvfs->z_os, quotaobj, buf, 8, 1, &quota);
 411         if (err != 0)
 412                 return (B_FALSE);
 413
 414         (void) snprintf(buf, sizeof (buf), DMU_OBJACCT_PREFIX "%llx",
 415             (longlong_t)id);
 416         err = zap_lookup(zfsvfs->z_os, usedobj, buf, 8, 1, &used);
 417         if (err != 0)
 418                 return (B_FALSE);
 419         return (used >= quota);
 420 }
 421
 422 boolean_t
 423 zfs_id_overblockquota(zfsvfs_t *zfsvfs, uint64_t usedobj, uint64_t id)
 424 {
 425         char buf[20];
 426         uint64_t used, quota, quotaobj;
 427         int err;
 428
 429         if (usedobj == DMU_PROJECTUSED_OBJECT) {
 430                 if (!dmu_objset_projectquota_present(zfsvfs->z_os)) {
 431                         if (dmu_objset_projectquota_upgradable(zfsvfs->z_os)) {
 432                                 dsl_pool_config_enter(
 433                                     dmu_objset_pool(zfsvfs->z_os), FTAG);
 434                                 dmu_objset_id_quota_upgrade(zfsvfs->z_os);
 435                                 dsl_pool_config_exit(
 436                                     dmu_objset_pool(zfsvfs->z_os), FTAG);
 437                         }
 438                         return (B_FALSE);
 439                 }
 440                 quotaobj = zfsvfs->z_projectquota_obj;
 441         } else if (usedobj == DMU_USERUSED_OBJECT) {
 442                 quotaobj = zfsvfs->z_userquota_obj;
 443         } else if (usedobj == DMU_GROUPUSED_OBJECT) {
 444                 quotaobj = zfsvfs->z_groupquota_obj;
 445         } else {
 446                 return (B_FALSE);
 447         }
 448         if (quotaobj == 0 || zfsvfs->z_replay)
 449                 return (B_FALSE);
 450
 451         (void) snprintf(buf, sizeof (buf), "%llx", (longlong_t)id);
 452         err = zap_lookup(zfsvfs->z_os, quotaobj, buf, 8, 1, &quota);
 453         if (err != 0)
 454                 return (B_FALSE);
 455
 456         err = zap_lookup(zfsvfs->z_os, usedobj, buf, 8, 1, &used);
 457         if (err != 0)
 458                 return (B_FALSE);
 459         return (used >= quota);
 460 }
 461
 462 boolean_t
 463 zfs_id_overquota(zfsvfs_t *zfsvfs, uint64_t usedobj, uint64_t id)
 464 {
 465         return (zfs_id_overblockquota(zfsvfs, usedobj, id) ||
 466             zfs_id_overobjquota(zfsvfs, usedobj, id));
 467 }
 468
 469 EXPORT_SYMBOL(zpl_get_file_info);
 470 EXPORT_SYMBOL(zfs_userspace_one);
 471 EXPORT_SYMBOL(zfs_userspace_many);
 472 EXPORT_SYMBOL(zfs_set_userquota);
 473 EXPORT_SYMBOL(zfs_id_overblockquota);
 474 EXPORT_SYMBOL(zfs_id_overobjquota);
 475 EXPORT_SYMBOL(zfs_id_overquota);