1// SPDX-License-Identifier: GPL-2.0 2#include "bcachefs.h" 3#include "btree_update.h" 4#include "errcode.h" 5#include "error.h" 6#include "inode.h" 7#include "quota.h" 8#include "snapshot.h" 9#include "super-io.h" 10 11static const char * const bch2_quota_types[] = { 12 "user", 13 "group", 14 "project", 15}; 16 17static const char * const bch2_quota_counters[] = { 18 "space", 19 "inodes", 20}; 21 22static int bch2_sb_quota_validate(struct bch_sb *sb, struct bch_sb_field *f, 23 struct printbuf *err) 24{ 25 struct bch_sb_field_quota *q = field_to_type(f, quota); 26 27 if (vstruct_bytes(&q->field) < sizeof(*q)) { 28 prt_printf(err, "wrong size (got %zu should be %zu)", 29 vstruct_bytes(&q->field), sizeof(*q)); 30 return -BCH_ERR_invalid_sb_quota; 31 } 32 33 return 0; 34} 35 36static void bch2_sb_quota_to_text(struct printbuf *out, struct bch_sb *sb, 37 struct bch_sb_field *f) 38{ 39 struct bch_sb_field_quota *q = field_to_type(f, quota); 40 unsigned qtyp, counter; 41 42 for (qtyp = 0; qtyp < ARRAY_SIZE(q->q); qtyp++) { 43 prt_printf(out, "%s: flags %llx", 44 bch2_quota_types[qtyp], 45 le64_to_cpu(q->q[qtyp].flags)); 46 47 for (counter = 0; counter < Q_COUNTERS; counter++) 48 prt_printf(out, " %s timelimit %u warnlimit %u", 49 bch2_quota_counters[counter], 50 le32_to_cpu(q->q[qtyp].c[counter].timelimit), 51 le32_to_cpu(q->q[qtyp].c[counter].warnlimit)); 52 53 prt_newline(out); 54 } 55} 56 57const struct bch_sb_field_ops bch_sb_field_ops_quota = { 58 .validate = bch2_sb_quota_validate, 59 .to_text = bch2_sb_quota_to_text, 60}; 61 62int bch2_quota_invalid(struct bch_fs *c, struct bkey_s_c k, 63 enum bkey_invalid_flags flags, 64 struct printbuf *err) 65{ 66 int ret = 0; 67 68 bkey_fsck_err_on(k.k->p.inode >= QTYP_NR, c, err, 69 quota_type_invalid, 70 "invalid quota type (%llu >= %u)", 71 k.k->p.inode, QTYP_NR); 72fsck_err: 73 return ret; 74} 75 76void bch2_quota_to_text(struct printbuf *out, struct bch_fs *c, 77 struct bkey_s_c k) 78{ 79 struct bkey_s_c_quota dq = bkey_s_c_to_quota(k); 80 unsigned i; 81 82 for (i = 0; i < Q_COUNTERS; i++) 83 prt_printf(out, "%s hardlimit %llu softlimit %llu", 84 bch2_quota_counters[i], 85 le64_to_cpu(dq.v->c[i].hardlimit), 86 le64_to_cpu(dq.v->c[i].softlimit)); 87} 88 89#ifdef CONFIG_BCACHEFS_QUOTA 90 91#include <linux/cred.h> 92#include <linux/fs.h> 93#include <linux/quota.h> 94 95static void qc_info_to_text(struct printbuf *out, struct qc_info *i) 96{ 97 printbuf_tabstops_reset(out); 98 printbuf_tabstop_push(out, 20); 99 100 prt_str(out, "i_fieldmask"); 101 prt_tab(out); 102 prt_printf(out, "%x", i->i_fieldmask); 103 prt_newline(out); 104 105 prt_str(out, "i_flags"); 106 prt_tab(out); 107 prt_printf(out, "%u", i->i_flags); 108 prt_newline(out); 109 110 prt_str(out, "i_spc_timelimit"); 111 prt_tab(out); 112 prt_printf(out, "%u", i->i_spc_timelimit); 113 prt_newline(out); 114 115 prt_str(out, "i_ino_timelimit"); 116 prt_tab(out); 117 prt_printf(out, "%u", i->i_ino_timelimit); 118 prt_newline(out); 119 120 prt_str(out, "i_rt_spc_timelimit"); 121 prt_tab(out); 122 prt_printf(out, "%u", i->i_rt_spc_timelimit); 123 prt_newline(out); 124 125 prt_str(out, "i_spc_warnlimit"); 126 prt_tab(out); 127 prt_printf(out, "%u", i->i_spc_warnlimit); 128 prt_newline(out); 129 130 prt_str(out, "i_ino_warnlimit"); 131 prt_tab(out); 132 prt_printf(out, "%u", i->i_ino_warnlimit); 133 prt_newline(out); 134 135 prt_str(out, "i_rt_spc_warnlimit"); 136 prt_tab(out); 137 prt_printf(out, "%u", i->i_rt_spc_warnlimit); 138 prt_newline(out); 139} 140 141static void qc_dqblk_to_text(struct printbuf *out, struct qc_dqblk *q) 142{ 143 printbuf_tabstops_reset(out); 144 printbuf_tabstop_push(out, 20); 145 146 prt_str(out, "d_fieldmask"); 147 prt_tab(out); 148 prt_printf(out, "%x", q->d_fieldmask); 149 prt_newline(out); 150 151 prt_str(out, "d_spc_hardlimit"); 152 prt_tab(out); 153 prt_printf(out, "%llu", q->d_spc_hardlimit); 154 prt_newline(out); 155 156 prt_str(out, "d_spc_softlimit"); 157 prt_tab(out); 158 prt_printf(out, "%llu", q->d_spc_softlimit); 159 prt_newline(out); 160 161 prt_str(out, "d_ino_hardlimit"); 162 prt_tab(out); 163 prt_printf(out, "%llu", q->d_ino_hardlimit); 164 prt_newline(out); 165 166 prt_str(out, "d_ino_softlimit"); 167 prt_tab(out); 168 prt_printf(out, "%llu", q->d_ino_softlimit); 169 prt_newline(out); 170 171 prt_str(out, "d_space"); 172 prt_tab(out); 173 prt_printf(out, "%llu", q->d_space); 174 prt_newline(out); 175 176 prt_str(out, "d_ino_count"); 177 prt_tab(out); 178 prt_printf(out, "%llu", q->d_ino_count); 179 prt_newline(out); 180 181 prt_str(out, "d_ino_timer"); 182 prt_tab(out); 183 prt_printf(out, "%llu", q->d_ino_timer); 184 prt_newline(out); 185 186 prt_str(out, "d_spc_timer"); 187 prt_tab(out); 188 prt_printf(out, "%llu", q->d_spc_timer); 189 prt_newline(out); 190 191 prt_str(out, "d_ino_warns"); 192 prt_tab(out); 193 prt_printf(out, "%i", q->d_ino_warns); 194 prt_newline(out); 195 196 prt_str(out, "d_spc_warns"); 197 prt_tab(out); 198 prt_printf(out, "%i", q->d_spc_warns); 199 prt_newline(out); 200} 201 202static inline unsigned __next_qtype(unsigned i, unsigned qtypes) 203{ 204 qtypes >>= i; 205 return qtypes ? i + __ffs(qtypes) : QTYP_NR; 206} 207 208#define for_each_set_qtype(_c, _i, _q, _qtypes) \ 209 for (_i = 0; \ 210 (_i = __next_qtype(_i, _qtypes), \ 211 _q = &(_c)->quotas[_i], \ 212 _i < QTYP_NR); \ 213 _i++) 214 215static bool ignore_hardlimit(struct bch_memquota_type *q) 216{ 217 if (capable(CAP_SYS_RESOURCE)) 218 return true; 219#if 0 220 struct mem_dqinfo *info = &sb_dqopt(dquot->dq_sb)->info[dquot->dq_id.type]; 221 222 return capable(CAP_SYS_RESOURCE) && 223 (info->dqi_format->qf_fmt_id != QFMT_VFS_OLD || 224 !(info->dqi_flags & DQF_ROOT_SQUASH)); 225#endif 226 return false; 227} 228 229enum quota_msg { 230 SOFTWARN, /* Softlimit reached */ 231 SOFTLONGWARN, /* Grace time expired */ 232 HARDWARN, /* Hardlimit reached */ 233 234 HARDBELOW, /* Usage got below inode hardlimit */ 235 SOFTBELOW, /* Usage got below inode softlimit */ 236}; 237 238static int quota_nl[][Q_COUNTERS] = { 239 [HARDWARN][Q_SPC] = QUOTA_NL_BHARDWARN, 240 [SOFTLONGWARN][Q_SPC] = QUOTA_NL_BSOFTLONGWARN, 241 [SOFTWARN][Q_SPC] = QUOTA_NL_BSOFTWARN, 242 [HARDBELOW][Q_SPC] = QUOTA_NL_BHARDBELOW, 243 [SOFTBELOW][Q_SPC] = QUOTA_NL_BSOFTBELOW, 244 245 [HARDWARN][Q_INO] = QUOTA_NL_IHARDWARN, 246 [SOFTLONGWARN][Q_INO] = QUOTA_NL_ISOFTLONGWARN, 247 [SOFTWARN][Q_INO] = QUOTA_NL_ISOFTWARN, 248 [HARDBELOW][Q_INO] = QUOTA_NL_IHARDBELOW, 249 [SOFTBELOW][Q_INO] = QUOTA_NL_ISOFTBELOW, 250}; 251 252struct quota_msgs { 253 u8 nr; 254 struct { 255 u8 qtype; 256 u8 msg; 257 } m[QTYP_NR * Q_COUNTERS]; 258}; 259 260static void prepare_msg(unsigned qtype, 261 enum quota_counters counter, 262 struct quota_msgs *msgs, 263 enum quota_msg msg_type) 264{ 265 BUG_ON(msgs->nr >= ARRAY_SIZE(msgs->m)); 266 267 msgs->m[msgs->nr].qtype = qtype; 268 msgs->m[msgs->nr].msg = quota_nl[msg_type][counter]; 269 msgs->nr++; 270} 271 272static void prepare_warning(struct memquota_counter *qc, 273 unsigned qtype, 274 enum quota_counters counter, 275 struct quota_msgs *msgs, 276 enum quota_msg msg_type) 277{ 278 if (qc->warning_issued & (1 << msg_type)) 279 return; 280 281 prepare_msg(qtype, counter, msgs, msg_type); 282} 283 284static void flush_warnings(struct bch_qid qid, 285 struct super_block *sb, 286 struct quota_msgs *msgs) 287{ 288 unsigned i; 289 290 for (i = 0; i < msgs->nr; i++) 291 quota_send_warning(make_kqid(&init_user_ns, msgs->m[i].qtype, qid.q[i]), 292 sb->s_dev, msgs->m[i].msg); 293} 294 295static int bch2_quota_check_limit(struct bch_fs *c, 296 unsigned qtype, 297 struct bch_memquota *mq, 298 struct quota_msgs *msgs, 299 enum quota_counters counter, 300 s64 v, 301 enum quota_acct_mode mode) 302{ 303 struct bch_memquota_type *q = &c->quotas[qtype]; 304 struct memquota_counter *qc = &mq->c[counter]; 305 u64 n = qc->v + v; 306 307 BUG_ON((s64) n < 0); 308 309 if (mode == KEY_TYPE_QUOTA_NOCHECK) 310 return 0; 311 312 if (v <= 0) { 313 if (n < qc->hardlimit && 314 (qc->warning_issued & (1 << HARDWARN))) { 315 qc->warning_issued &= ~(1 << HARDWARN); 316 prepare_msg(qtype, counter, msgs, HARDBELOW); 317 } 318 319 if (n < qc->softlimit && 320 (qc->warning_issued & (1 << SOFTWARN))) { 321 qc->warning_issued &= ~(1 << SOFTWARN); 322 prepare_msg(qtype, counter, msgs, SOFTBELOW); 323 } 324 325 qc->warning_issued = 0; 326 return 0; 327 } 328 329 if (qc->hardlimit && 330 qc->hardlimit < n && 331 !ignore_hardlimit(q)) { 332 prepare_warning(qc, qtype, counter, msgs, HARDWARN); 333 return -EDQUOT; 334 } 335 336 if (qc->softlimit && 337 qc->softlimit < n) { 338 if (qc->timer == 0) { 339 qc->timer = ktime_get_real_seconds() + q->limits[counter].timelimit; 340 prepare_warning(qc, qtype, counter, msgs, SOFTWARN); 341 } else if (ktime_get_real_seconds() >= qc->timer && 342 !ignore_hardlimit(q)) { 343 prepare_warning(qc, qtype, counter, msgs, SOFTLONGWARN); 344 return -EDQUOT; 345 } 346 } 347 348 return 0; 349} 350 351int bch2_quota_acct(struct bch_fs *c, struct bch_qid qid, 352 enum quota_counters counter, s64 v, 353 enum quota_acct_mode mode) 354{ 355 unsigned qtypes = enabled_qtypes(c); 356 struct bch_memquota_type *q; 357 struct bch_memquota *mq[QTYP_NR]; 358 struct quota_msgs msgs; 359 unsigned i; 360 int ret = 0; 361 362 memset(&msgs, 0, sizeof(msgs)); 363 364 for_each_set_qtype(c, i, q, qtypes) { 365 mq[i] = genradix_ptr_alloc(&q->table, qid.q[i], GFP_KERNEL); 366 if (!mq[i]) 367 return -ENOMEM; 368 } 369 370 for_each_set_qtype(c, i, q, qtypes) 371 mutex_lock_nested(&q->lock, i); 372 373 for_each_set_qtype(c, i, q, qtypes) { 374 ret = bch2_quota_check_limit(c, i, mq[i], &msgs, counter, v, mode); 375 if (ret) 376 goto err; 377 } 378 379 for_each_set_qtype(c, i, q, qtypes) 380 mq[i]->c[counter].v += v; 381err: 382 for_each_set_qtype(c, i, q, qtypes) 383 mutex_unlock(&q->lock); 384 385 flush_warnings(qid, c->vfs_sb, &msgs); 386 387 return ret; 388} 389 390static void __bch2_quota_transfer(struct bch_memquota *src_q, 391 struct bch_memquota *dst_q, 392 enum quota_counters counter, s64 v) 393{ 394 BUG_ON(v > src_q->c[counter].v); 395 BUG_ON(v + dst_q->c[counter].v < v); 396 397 src_q->c[counter].v -= v; 398 dst_q->c[counter].v += v; 399} 400 401int bch2_quota_transfer(struct bch_fs *c, unsigned qtypes, 402 struct bch_qid dst, 403 struct bch_qid src, u64 space, 404 enum quota_acct_mode mode) 405{ 406 struct bch_memquota_type *q; 407 struct bch_memquota *src_q[3], *dst_q[3]; 408 struct quota_msgs msgs; 409 unsigned i; 410 int ret = 0; 411 412 qtypes &= enabled_qtypes(c); 413 414 memset(&msgs, 0, sizeof(msgs)); 415 416 for_each_set_qtype(c, i, q, qtypes) { 417 src_q[i] = genradix_ptr_alloc(&q->table, src.q[i], GFP_KERNEL); 418 dst_q[i] = genradix_ptr_alloc(&q->table, dst.q[i], GFP_KERNEL); 419 if (!src_q[i] || !dst_q[i]) 420 return -ENOMEM; 421 } 422 423 for_each_set_qtype(c, i, q, qtypes) 424 mutex_lock_nested(&q->lock, i); 425 426 for_each_set_qtype(c, i, q, qtypes) { 427 ret = bch2_quota_check_limit(c, i, dst_q[i], &msgs, Q_SPC, 428 dst_q[i]->c[Q_SPC].v + space, 429 mode); 430 if (ret) 431 goto err; 432 433 ret = bch2_quota_check_limit(c, i, dst_q[i], &msgs, Q_INO, 434 dst_q[i]->c[Q_INO].v + 1, 435 mode); 436 if (ret) 437 goto err; 438 } 439 440 for_each_set_qtype(c, i, q, qtypes) { 441 __bch2_quota_transfer(src_q[i], dst_q[i], Q_SPC, space); 442 __bch2_quota_transfer(src_q[i], dst_q[i], Q_INO, 1); 443 } 444 445err: 446 for_each_set_qtype(c, i, q, qtypes) 447 mutex_unlock(&q->lock); 448 449 flush_warnings(dst, c->vfs_sb, &msgs); 450 451 return ret; 452} 453 454static int __bch2_quota_set(struct bch_fs *c, struct bkey_s_c k, 455 struct qc_dqblk *qdq) 456{ 457 struct bkey_s_c_quota dq; 458 struct bch_memquota_type *q; 459 struct bch_memquota *mq; 460 unsigned i; 461 462 BUG_ON(k.k->p.inode >= QTYP_NR); 463 464 if (!((1U << k.k->p.inode) & enabled_qtypes(c))) 465 return 0; 466 467 switch (k.k->type) { 468 case KEY_TYPE_quota: 469 dq = bkey_s_c_to_quota(k); 470 q = &c->quotas[k.k->p.inode]; 471 472 mutex_lock(&q->lock); 473 mq = genradix_ptr_alloc(&q->table, k.k->p.offset, GFP_KERNEL); 474 if (!mq) { 475 mutex_unlock(&q->lock); 476 return -ENOMEM; 477 } 478 479 for (i = 0; i < Q_COUNTERS; i++) { 480 mq->c[i].hardlimit = le64_to_cpu(dq.v->c[i].hardlimit); 481 mq->c[i].softlimit = le64_to_cpu(dq.v->c[i].softlimit); 482 } 483 484 if (qdq && qdq->d_fieldmask & QC_SPC_TIMER) 485 mq->c[Q_SPC].timer = qdq->d_spc_timer; 486 if (qdq && qdq->d_fieldmask & QC_SPC_WARNS) 487 mq->c[Q_SPC].warns = qdq->d_spc_warns; 488 if (qdq && qdq->d_fieldmask & QC_INO_TIMER) 489 mq->c[Q_INO].timer = qdq->d_ino_timer; 490 if (qdq && qdq->d_fieldmask & QC_INO_WARNS) 491 mq->c[Q_INO].warns = qdq->d_ino_warns; 492 493 mutex_unlock(&q->lock); 494 } 495 496 return 0; 497} 498 499void bch2_fs_quota_exit(struct bch_fs *c) 500{ 501 unsigned i; 502 503 for (i = 0; i < ARRAY_SIZE(c->quotas); i++) 504 genradix_free(&c->quotas[i].table); 505} 506 507void bch2_fs_quota_init(struct bch_fs *c) 508{ 509 unsigned i; 510 511 for (i = 0; i < ARRAY_SIZE(c->quotas); i++) 512 mutex_init(&c->quotas[i].lock); 513} 514 515static struct bch_sb_field_quota *bch2_sb_get_or_create_quota(struct bch_sb_handle *sb) 516{ 517 struct bch_sb_field_quota *sb_quota = bch2_sb_field_get(sb->sb, quota); 518 519 if (sb_quota) 520 return sb_quota; 521 522 sb_quota = bch2_sb_field_resize(sb, quota, sizeof(*sb_quota) / sizeof(u64)); 523 if (sb_quota) { 524 unsigned qtype, qc; 525 526 for (qtype = 0; qtype < QTYP_NR; qtype++) 527 for (qc = 0; qc < Q_COUNTERS; qc++) 528 sb_quota->q[qtype].c[qc].timelimit = 529 cpu_to_le32(7 * 24 * 60 * 60); 530 } 531 532 return sb_quota; 533} 534 535static void bch2_sb_quota_read(struct bch_fs *c) 536{ 537 struct bch_sb_field_quota *sb_quota; 538 unsigned i, j; 539 540 sb_quota = bch2_sb_field_get(c->disk_sb.sb, quota); 541 if (!sb_quota) 542 return; 543 544 for (i = 0; i < QTYP_NR; i++) { 545 struct bch_memquota_type *q = &c->quotas[i]; 546 547 for (j = 0; j < Q_COUNTERS; j++) { 548 q->limits[j].timelimit = 549 le32_to_cpu(sb_quota->q[i].c[j].timelimit); 550 q->limits[j].warnlimit = 551 le32_to_cpu(sb_quota->q[i].c[j].warnlimit); 552 } 553 } 554} 555 556static int bch2_fs_quota_read_inode(struct btree_trans *trans, 557 struct btree_iter *iter, 558 struct bkey_s_c k) 559{ 560 struct bch_fs *c = trans->c; 561 struct bch_inode_unpacked u; 562 struct bch_snapshot_tree s_t; 563 int ret; 564 565 ret = bch2_snapshot_tree_lookup(trans, 566 bch2_snapshot_tree(c, k.k->p.snapshot), &s_t); 567 bch2_fs_inconsistent_on(bch2_err_matches(ret, ENOENT), c, 568 "%s: snapshot tree %u not found", __func__, 569 snapshot_t(c, k.k->p.snapshot)->tree); 570 if (ret) 571 return ret; 572 573 if (!s_t.master_subvol) 574 goto advance; 575 576 ret = bch2_inode_find_by_inum_nowarn_trans(trans, 577 (subvol_inum) { 578 le32_to_cpu(s_t.master_subvol), 579 k.k->p.offset, 580 }, &u); 581 /* 582 * Inode might be deleted in this snapshot - the easiest way to handle 583 * that is to just skip it here: 584 */ 585 if (bch2_err_matches(ret, ENOENT)) 586 goto advance; 587 588 if (ret) 589 return ret; 590 591 bch2_quota_acct(c, bch_qid(&u), Q_SPC, u.bi_sectors, 592 KEY_TYPE_QUOTA_NOCHECK); 593 bch2_quota_acct(c, bch_qid(&u), Q_INO, 1, 594 KEY_TYPE_QUOTA_NOCHECK); 595advance: 596 bch2_btree_iter_set_pos(iter, bpos_nosnap_successor(iter->pos)); 597 return 0; 598} 599 600int bch2_fs_quota_read(struct bch_fs *c) 601{ 602 603 mutex_lock(&c->sb_lock); 604 struct bch_sb_field_quota *sb_quota = bch2_sb_get_or_create_quota(&c->disk_sb); 605 if (!sb_quota) { 606 mutex_unlock(&c->sb_lock); 607 return -BCH_ERR_ENOSPC_sb_quota; 608 } 609 610 bch2_sb_quota_read(c); 611 mutex_unlock(&c->sb_lock); 612 613 int ret = bch2_trans_run(c, 614 for_each_btree_key(trans, iter, BTREE_ID_quotas, POS_MIN, 615 BTREE_ITER_PREFETCH, k, 616 __bch2_quota_set(c, k, NULL)) ?: 617 for_each_btree_key(trans, iter, BTREE_ID_inodes, POS_MIN, 618 BTREE_ITER_PREFETCH|BTREE_ITER_ALL_SNAPSHOTS, k, 619 bch2_fs_quota_read_inode(trans, &iter, k))); 620 bch_err_fn(c, ret); 621 return ret; 622} 623 624/* Enable/disable/delete quotas for an entire filesystem: */ 625 626static int bch2_quota_enable(struct super_block *sb, unsigned uflags) 627{ 628 struct bch_fs *c = sb->s_fs_info; 629 struct bch_sb_field_quota *sb_quota; 630 int ret = 0; 631 632 if (sb->s_flags & SB_RDONLY) 633 return -EROFS; 634 635 /* Accounting must be enabled at mount time: */ 636 if (uflags & (FS_QUOTA_UDQ_ACCT|FS_QUOTA_GDQ_ACCT|FS_QUOTA_PDQ_ACCT)) 637 return -EINVAL; 638 639 /* Can't enable enforcement without accounting: */ 640 if ((uflags & FS_QUOTA_UDQ_ENFD) && !c->opts.usrquota) 641 return -EINVAL; 642 643 if ((uflags & FS_QUOTA_GDQ_ENFD) && !c->opts.grpquota) 644 return -EINVAL; 645 646 if (uflags & FS_QUOTA_PDQ_ENFD && !c->opts.prjquota) 647 return -EINVAL; 648 649 mutex_lock(&c->sb_lock); 650 sb_quota = bch2_sb_get_or_create_quota(&c->disk_sb); 651 if (!sb_quota) { 652 ret = -BCH_ERR_ENOSPC_sb_quota; 653 goto unlock; 654 } 655 656 if (uflags & FS_QUOTA_UDQ_ENFD) 657 SET_BCH_SB_USRQUOTA(c->disk_sb.sb, true); 658 659 if (uflags & FS_QUOTA_GDQ_ENFD) 660 SET_BCH_SB_GRPQUOTA(c->disk_sb.sb, true); 661 662 if (uflags & FS_QUOTA_PDQ_ENFD) 663 SET_BCH_SB_PRJQUOTA(c->disk_sb.sb, true); 664 665 bch2_write_super(c); 666unlock: 667 mutex_unlock(&c->sb_lock); 668 669 return bch2_err_class(ret); 670} 671 672static int bch2_quota_disable(struct super_block *sb, unsigned uflags) 673{ 674 struct bch_fs *c = sb->s_fs_info; 675 676 if (sb->s_flags & SB_RDONLY) 677 return -EROFS; 678 679 mutex_lock(&c->sb_lock); 680 if (uflags & FS_QUOTA_UDQ_ENFD) 681 SET_BCH_SB_USRQUOTA(c->disk_sb.sb, false); 682 683 if (uflags & FS_QUOTA_GDQ_ENFD) 684 SET_BCH_SB_GRPQUOTA(c->disk_sb.sb, false); 685 686 if (uflags & FS_QUOTA_PDQ_ENFD) 687 SET_BCH_SB_PRJQUOTA(c->disk_sb.sb, false); 688 689 bch2_write_super(c); 690 mutex_unlock(&c->sb_lock); 691 692 return 0; 693} 694 695static int bch2_quota_remove(struct super_block *sb, unsigned uflags) 696{ 697 struct bch_fs *c = sb->s_fs_info; 698 int ret; 699 700 if (sb->s_flags & SB_RDONLY) 701 return -EROFS; 702 703 if (uflags & FS_USER_QUOTA) { 704 if (c->opts.usrquota) 705 return -EINVAL; 706 707 ret = bch2_btree_delete_range(c, BTREE_ID_quotas, 708 POS(QTYP_USR, 0), 709 POS(QTYP_USR, U64_MAX), 710 0, NULL); 711 if (ret) 712 return ret; 713 } 714 715 if (uflags & FS_GROUP_QUOTA) { 716 if (c->opts.grpquota) 717 return -EINVAL; 718 719 ret = bch2_btree_delete_range(c, BTREE_ID_quotas, 720 POS(QTYP_GRP, 0), 721 POS(QTYP_GRP, U64_MAX), 722 0, NULL); 723 if (ret) 724 return ret; 725 } 726 727 if (uflags & FS_PROJ_QUOTA) { 728 if (c->opts.prjquota) 729 return -EINVAL; 730 731 ret = bch2_btree_delete_range(c, BTREE_ID_quotas, 732 POS(QTYP_PRJ, 0), 733 POS(QTYP_PRJ, U64_MAX), 734 0, NULL); 735 if (ret) 736 return ret; 737 } 738 739 return 0; 740} 741 742/* 743 * Return quota status information, such as enforcements, quota file inode 744 * numbers etc. 745 */ 746static int bch2_quota_get_state(struct super_block *sb, struct qc_state *state) 747{ 748 struct bch_fs *c = sb->s_fs_info; 749 unsigned qtypes = enabled_qtypes(c); 750 unsigned i; 751 752 memset(state, 0, sizeof(*state)); 753 754 for (i = 0; i < QTYP_NR; i++) { 755 state->s_state[i].flags |= QCI_SYSFILE; 756 757 if (!(qtypes & (1 << i))) 758 continue; 759 760 state->s_state[i].flags |= QCI_ACCT_ENABLED; 761 762 state->s_state[i].spc_timelimit = c->quotas[i].limits[Q_SPC].timelimit; 763 state->s_state[i].spc_warnlimit = c->quotas[i].limits[Q_SPC].warnlimit; 764 765 state->s_state[i].ino_timelimit = c->quotas[i].limits[Q_INO].timelimit; 766 state->s_state[i].ino_warnlimit = c->quotas[i].limits[Q_INO].warnlimit; 767 } 768 769 return 0; 770} 771 772/* 773 * Adjust quota timers & warnings 774 */ 775static int bch2_quota_set_info(struct super_block *sb, int type, 776 struct qc_info *info) 777{ 778 struct bch_fs *c = sb->s_fs_info; 779 struct bch_sb_field_quota *sb_quota; 780 int ret = 0; 781 782 if (0) { 783 struct printbuf buf = PRINTBUF; 784 785 qc_info_to_text(&buf, info); 786 pr_info("setting:\n%s", buf.buf); 787 printbuf_exit(&buf); 788 } 789 790 if (sb->s_flags & SB_RDONLY) 791 return -EROFS; 792 793 if (type >= QTYP_NR) 794 return -EINVAL; 795 796 if (!((1 << type) & enabled_qtypes(c))) 797 return -ESRCH; 798 799 if (info->i_fieldmask & 800 ~(QC_SPC_TIMER|QC_INO_TIMER|QC_SPC_WARNS|QC_INO_WARNS)) 801 return -EINVAL; 802 803 mutex_lock(&c->sb_lock); 804 sb_quota = bch2_sb_get_or_create_quota(&c->disk_sb); 805 if (!sb_quota) { 806 ret = -BCH_ERR_ENOSPC_sb_quota; 807 goto unlock; 808 } 809 810 if (info->i_fieldmask & QC_SPC_TIMER) 811 sb_quota->q[type].c[Q_SPC].timelimit = 812 cpu_to_le32(info->i_spc_timelimit); 813 814 if (info->i_fieldmask & QC_SPC_WARNS) 815 sb_quota->q[type].c[Q_SPC].warnlimit = 816 cpu_to_le32(info->i_spc_warnlimit); 817 818 if (info->i_fieldmask & QC_INO_TIMER) 819 sb_quota->q[type].c[Q_INO].timelimit = 820 cpu_to_le32(info->i_ino_timelimit); 821 822 if (info->i_fieldmask & QC_INO_WARNS) 823 sb_quota->q[type].c[Q_INO].warnlimit = 824 cpu_to_le32(info->i_ino_warnlimit); 825 826 bch2_sb_quota_read(c); 827 828 bch2_write_super(c); 829unlock: 830 mutex_unlock(&c->sb_lock); 831 832 return bch2_err_class(ret); 833} 834 835/* Get/set individual quotas: */ 836 837static void __bch2_quota_get(struct qc_dqblk *dst, struct bch_memquota *src) 838{ 839 dst->d_space = src->c[Q_SPC].v << 9; 840 dst->d_spc_hardlimit = src->c[Q_SPC].hardlimit << 9; 841 dst->d_spc_softlimit = src->c[Q_SPC].softlimit << 9; 842 dst->d_spc_timer = src->c[Q_SPC].timer; 843 dst->d_spc_warns = src->c[Q_SPC].warns; 844 845 dst->d_ino_count = src->c[Q_INO].v; 846 dst->d_ino_hardlimit = src->c[Q_INO].hardlimit; 847 dst->d_ino_softlimit = src->c[Q_INO].softlimit; 848 dst->d_ino_timer = src->c[Q_INO].timer; 849 dst->d_ino_warns = src->c[Q_INO].warns; 850} 851 852static int bch2_get_quota(struct super_block *sb, struct kqid kqid, 853 struct qc_dqblk *qdq) 854{ 855 struct bch_fs *c = sb->s_fs_info; 856 struct bch_memquota_type *q = &c->quotas[kqid.type]; 857 qid_t qid = from_kqid(&init_user_ns, kqid); 858 struct bch_memquota *mq; 859 860 memset(qdq, 0, sizeof(*qdq)); 861 862 mutex_lock(&q->lock); 863 mq = genradix_ptr(&q->table, qid); 864 if (mq) 865 __bch2_quota_get(qdq, mq); 866 mutex_unlock(&q->lock); 867 868 return 0; 869} 870 871static int bch2_get_next_quota(struct super_block *sb, struct kqid *kqid, 872 struct qc_dqblk *qdq) 873{ 874 struct bch_fs *c = sb->s_fs_info; 875 struct bch_memquota_type *q = &c->quotas[kqid->type]; 876 qid_t qid = from_kqid(&init_user_ns, *kqid); 877 struct genradix_iter iter; 878 struct bch_memquota *mq; 879 int ret = 0; 880 881 mutex_lock(&q->lock); 882 883 genradix_for_each_from(&q->table, iter, mq, qid) 884 if (memcmp(mq, page_address(ZERO_PAGE(0)), sizeof(*mq))) { 885 __bch2_quota_get(qdq, mq); 886 *kqid = make_kqid(current_user_ns(), kqid->type, iter.pos); 887 goto found; 888 } 889 890 ret = -ENOENT; 891found: 892 mutex_unlock(&q->lock); 893 return bch2_err_class(ret); 894} 895 896static int bch2_set_quota_trans(struct btree_trans *trans, 897 struct bkey_i_quota *new_quota, 898 struct qc_dqblk *qdq) 899{ 900 struct btree_iter iter; 901 struct bkey_s_c k; 902 int ret; 903 904 k = bch2_bkey_get_iter(trans, &iter, BTREE_ID_quotas, new_quota->k.p, 905 BTREE_ITER_SLOTS|BTREE_ITER_INTENT); 906 ret = bkey_err(k); 907 if (unlikely(ret)) 908 return ret; 909 910 if (k.k->type == KEY_TYPE_quota) 911 new_quota->v = *bkey_s_c_to_quota(k).v; 912 913 if (qdq->d_fieldmask & QC_SPC_SOFT) 914 new_quota->v.c[Q_SPC].softlimit = cpu_to_le64(qdq->d_spc_softlimit >> 9); 915 if (qdq->d_fieldmask & QC_SPC_HARD) 916 new_quota->v.c[Q_SPC].hardlimit = cpu_to_le64(qdq->d_spc_hardlimit >> 9); 917 918 if (qdq->d_fieldmask & QC_INO_SOFT) 919 new_quota->v.c[Q_INO].softlimit = cpu_to_le64(qdq->d_ino_softlimit); 920 if (qdq->d_fieldmask & QC_INO_HARD) 921 new_quota->v.c[Q_INO].hardlimit = cpu_to_le64(qdq->d_ino_hardlimit); 922 923 ret = bch2_trans_update(trans, &iter, &new_quota->k_i, 0); 924 bch2_trans_iter_exit(trans, &iter); 925 return ret; 926} 927 928static int bch2_set_quota(struct super_block *sb, struct kqid qid, 929 struct qc_dqblk *qdq) 930{ 931 struct bch_fs *c = sb->s_fs_info; 932 struct bkey_i_quota new_quota; 933 int ret; 934 935 if (0) { 936 struct printbuf buf = PRINTBUF; 937 938 qc_dqblk_to_text(&buf, qdq); 939 pr_info("setting:\n%s", buf.buf); 940 printbuf_exit(&buf); 941 } 942 943 if (sb->s_flags & SB_RDONLY) 944 return -EROFS; 945 946 bkey_quota_init(&new_quota.k_i); 947 new_quota.k.p = POS(qid.type, from_kqid(&init_user_ns, qid)); 948 949 ret = bch2_trans_do(c, NULL, NULL, 0, 950 bch2_set_quota_trans(trans, &new_quota, qdq)) ?: 951 __bch2_quota_set(c, bkey_i_to_s_c(&new_quota.k_i), qdq); 952 953 return bch2_err_class(ret); 954} 955 956const struct quotactl_ops bch2_quotactl_operations = { 957 .quota_enable = bch2_quota_enable, 958 .quota_disable = bch2_quota_disable, 959 .rm_xquota = bch2_quota_remove, 960 961 .get_state = bch2_quota_get_state, 962 .set_info = bch2_quota_set_info, 963 964 .get_dqblk = bch2_get_quota, 965 .get_nextdqblk = bch2_get_next_quota, 966 .set_dqblk = bch2_set_quota, 967}; 968 969#endif /* CONFIG_BCACHEFS_QUOTA */ 970