1 /* $NetBSD: ulfs_quota1.c,v 1.12 2021/06/29 22:40:54 dholland Exp $ */ 2 /* from NetBSD: ufs_quota1.c,v 1.22 2016/06/20 00:52:04 dholland Exp */ 3 4 /* 5 * Copyright (c) 1982, 1986, 1990, 1993, 1995 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Robert Elz at The University of Melbourne. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)ufs_quota.c 8.5 (Berkeley) 5/20/95 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: ulfs_quota1.c,v 1.12 2021/06/29 22:40:54 dholland Exp $"); 40 41 #include <sys/param.h> 42 #include <sys/kernel.h> 43 #include <sys/systm.h> 44 #include <sys/namei.h> 45 #include <sys/file.h> 46 #include <sys/proc.h> 47 #include <sys/vnode.h> 48 #include <sys/mount.h> 49 #include <sys/kauth.h> 50 51 #include <ufs/lfs/ulfs_quota1.h> 52 #include <ufs/lfs/ulfs_inode.h> 53 #include <ufs/lfs/ulfsmount.h> 54 #include <ufs/lfs/ulfs_extern.h> 55 #include <ufs/lfs/ulfs_quota.h> 56 57 static int chkdqchg(struct inode *, int64_t, kauth_cred_t, int); 58 static int chkiqchg(struct inode *, int32_t, kauth_cred_t, int); 59 60 /* 61 * Update disk usage, and take corrective action. 62 */ 63 int 64 lfs_chkdq1(struct inode *ip, int64_t change, kauth_cred_t cred, int flags) 65 { 66 struct dquot *dq; 67 int i; 68 int ncurblocks, error; 69 70 if ((error = lfs_getinoquota(ip)) != 0) 71 return error; 72 if (change == 0) 73 return (0); 74 if (change < 0) { 75 for (i = 0; i < ULFS_MAXQUOTAS; i++) { 76 if ((dq = ip->i_dquot[i]) == NODQUOT) 77 continue; 78 mutex_enter(&dq->dq_interlock); 79 ncurblocks = dq->dq_curblocks + change; 80 if (ncurblocks >= 0) 81 dq->dq_curblocks = ncurblocks; 82 else 83 dq->dq_curblocks = 0; 84 dq->dq_flags &= ~DQ_WARN(QL_BLOCK); 85 dq->dq_flags |= DQ_MOD; 86 mutex_exit(&dq->dq_interlock); 87 } 88 return (0); 89 } 90 for (i = 0; i < ULFS_MAXQUOTAS; i++) { 91 if ((dq = ip->i_dquot[i]) == NODQUOT) 92 continue; 93 if ((flags & FORCE) == 0 && 94 kauth_authorize_system(cred, KAUTH_SYSTEM_FS_QUOTA, 95 KAUTH_REQ_SYSTEM_FS_QUOTA_NOLIMIT, KAUTH_ARG(i), 96 KAUTH_ARG(QL_BLOCK), NULL) != 0) { 97 mutex_enter(&dq->dq_interlock); 98 error = chkdqchg(ip, change, cred, i); 99 mutex_exit(&dq->dq_interlock); 100 if (error != 0) 101 return (error); 102 } 103 } 104 for (i = 0; i < ULFS_MAXQUOTAS; i++) { 105 if ((dq = ip->i_dquot[i]) == NODQUOT) 106 continue; 107 mutex_enter(&dq->dq_interlock); 108 dq->dq_curblocks += change; 109 dq->dq_flags |= DQ_MOD; 110 mutex_exit(&dq->dq_interlock); 111 } 112 return (0); 113 } 114 115 /* 116 * Check for a valid change to a users allocation. 117 * Issue an error message if appropriate. 118 */ 119 static int 120 chkdqchg(struct inode *ip, int64_t change, kauth_cred_t cred, int type) 121 { 122 struct dquot *dq = ip->i_dquot[type]; 123 long ncurblocks = dq->dq_curblocks + change; 124 125 KASSERT(mutex_owned(&dq->dq_interlock)); 126 /* 127 * If user would exceed their hard limit, disallow space allocation. 128 */ 129 if (ncurblocks >= dq->dq_bhardlimit && dq->dq_bhardlimit) { 130 if ((dq->dq_flags & DQ_WARN(QL_BLOCK)) == 0 && 131 ip->i_uid == kauth_cred_geteuid(cred)) { 132 uprintf("\n%s: write failed, %s disk limit reached\n", 133 ITOV(ip)->v_mount->mnt_stat.f_mntonname, 134 lfs_quotatypes[type]); 135 dq->dq_flags |= DQ_WARN(QL_BLOCK); 136 } 137 return (EDQUOT); 138 } 139 /* 140 * If user is over their soft limit for too long, disallow space 141 * allocation. Reset time limit as they cross their soft limit. 142 */ 143 if (ncurblocks >= dq->dq_bsoftlimit && dq->dq_bsoftlimit) { 144 if (dq->dq_curblocks < dq->dq_bsoftlimit) { 145 dq->dq_btime = 146 time_second + ip->i_ump->umq1_btime[type]; 147 if (ip->i_uid == kauth_cred_geteuid(cred)) 148 uprintf("\n%s: warning, %s %s\n", 149 ITOV(ip)->v_mount->mnt_stat.f_mntonname, 150 lfs_quotatypes[type], "disk quota exceeded"); 151 return (0); 152 } 153 if (time_second > dq->dq_btime) { 154 if ((dq->dq_flags & DQ_WARN(QL_BLOCK)) == 0 && 155 ip->i_uid == kauth_cred_geteuid(cred)) { 156 uprintf("\n%s: write failed, %s %s\n", 157 ITOV(ip)->v_mount->mnt_stat.f_mntonname, 158 lfs_quotatypes[type], 159 "disk quota exceeded for too long"); 160 dq->dq_flags |= DQ_WARN(QL_BLOCK); 161 } 162 return (EDQUOT); 163 } 164 } 165 return (0); 166 } 167 168 /* 169 * Check the inode limit, applying corrective action. 170 */ 171 int 172 lfs_chkiq1(struct inode *ip, int32_t change, kauth_cred_t cred, int flags) 173 { 174 struct dquot *dq; 175 int i; 176 int ncurinodes, error; 177 178 if ((error = lfs_getinoquota(ip)) != 0) 179 return error; 180 if (change == 0) 181 return (0); 182 if (change < 0) { 183 for (i = 0; i < ULFS_MAXQUOTAS; i++) { 184 if ((dq = ip->i_dquot[i]) == NODQUOT) 185 continue; 186 mutex_enter(&dq->dq_interlock); 187 ncurinodes = dq->dq_curinodes + change; 188 if (ncurinodes >= 0) 189 dq->dq_curinodes = ncurinodes; 190 else 191 dq->dq_curinodes = 0; 192 dq->dq_flags &= ~DQ_WARN(QL_FILE); 193 dq->dq_flags |= DQ_MOD; 194 mutex_exit(&dq->dq_interlock); 195 } 196 return (0); 197 } 198 for (i = 0; i < ULFS_MAXQUOTAS; i++) { 199 if ((dq = ip->i_dquot[i]) == NODQUOT) 200 continue; 201 if ((flags & FORCE) == 0 && kauth_authorize_system(cred, 202 KAUTH_SYSTEM_FS_QUOTA, KAUTH_REQ_SYSTEM_FS_QUOTA_NOLIMIT, 203 KAUTH_ARG(i), KAUTH_ARG(QL_FILE), NULL) != 0) { 204 mutex_enter(&dq->dq_interlock); 205 error = chkiqchg(ip, change, cred, i); 206 mutex_exit(&dq->dq_interlock); 207 if (error != 0) 208 return (error); 209 } 210 } 211 for (i = 0; i < ULFS_MAXQUOTAS; i++) { 212 if ((dq = ip->i_dquot[i]) == NODQUOT) 213 continue; 214 mutex_enter(&dq->dq_interlock); 215 dq->dq_curinodes += change; 216 dq->dq_flags |= DQ_MOD; 217 mutex_exit(&dq->dq_interlock); 218 } 219 return (0); 220 } 221 222 /* 223 * Check for a valid change to a users allocation. 224 * Issue an error message if appropriate. 225 */ 226 static int 227 chkiqchg(struct inode *ip, int32_t change, kauth_cred_t cred, int type) 228 { 229 struct dquot *dq = ip->i_dquot[type]; 230 long ncurinodes = dq->dq_curinodes + change; 231 232 KASSERT(mutex_owned(&dq->dq_interlock)); 233 /* 234 * If user would exceed their hard limit, disallow inode allocation. 235 */ 236 if (ncurinodes >= dq->dq_ihardlimit && dq->dq_ihardlimit) { 237 if ((dq->dq_flags & DQ_WARN(QL_FILE)) == 0 && 238 ip->i_uid == kauth_cred_geteuid(cred)) { 239 uprintf("\n%s: write failed, %s inode limit reached\n", 240 ITOV(ip)->v_mount->mnt_stat.f_mntonname, 241 lfs_quotatypes[type]); 242 dq->dq_flags |= DQ_WARN(QL_FILE); 243 } 244 return (EDQUOT); 245 } 246 /* 247 * If user is over their soft limit for too long, disallow inode 248 * allocation. Reset time limit as they cross their soft limit. 249 */ 250 if (ncurinodes >= dq->dq_isoftlimit && dq->dq_isoftlimit) { 251 if (dq->dq_curinodes < dq->dq_isoftlimit) { 252 dq->dq_itime = 253 time_second + ip->i_ump->umq1_itime[type]; 254 if (ip->i_uid == kauth_cred_geteuid(cred)) 255 uprintf("\n%s: warning, %s %s\n", 256 ITOV(ip)->v_mount->mnt_stat.f_mntonname, 257 lfs_quotatypes[type], "inode quota exceeded"); 258 return (0); 259 } 260 if (time_second > dq->dq_itime) { 261 if ((dq->dq_flags & DQ_WARN(QL_FILE)) == 0 && 262 ip->i_uid == kauth_cred_geteuid(cred)) { 263 uprintf("\n%s: write failed, %s %s\n", 264 ITOV(ip)->v_mount->mnt_stat.f_mntonname, 265 lfs_quotatypes[type], 266 "inode quota exceeded for too long"); 267 dq->dq_flags |= DQ_WARN(QL_FILE); 268 } 269 return (EDQUOT); 270 } 271 } 272 return (0); 273 } 274 275 int 276 lfsquota1_umount(struct mount *mp, int flags) 277 { 278 int i, error; 279 struct ulfsmount *ump = VFSTOULFS(mp); 280 struct lfs *fs = ump->um_lfs; 281 struct lwp *l = curlwp; 282 283 if ((fs->um_flags & ULFS_QUOTA) == 0) 284 return 0; 285 286 if ((error = vflush(mp, NULLVP, SKIPSYSTEM | flags)) != 0) 287 return (error); 288 289 for (i = 0; i < ULFS_MAXQUOTAS; i++) { 290 if (ump->um_quotas[i] != NULLVP) { 291 lfsquota1_handle_cmd_quotaoff(l, ump, i); 292 } 293 } 294 return 0; 295 } 296 297 /* 298 * Code to process quotactl commands. 299 */ 300 301 /* 302 * set up a quota file for a particular file system. 303 */ 304 int 305 lfsquota1_handle_cmd_quotaon(struct lwp *l, struct ulfsmount *ump, int type, 306 const char *fname) 307 { 308 struct mount *mp = ump->um_mountp; 309 struct lfs *fs = ump->um_lfs; 310 struct vnode *vp, **vpp; 311 struct vnode_iterator *marker; 312 struct dquot *dq; 313 int error; 314 struct pathbuf *pb; 315 316 if (fs->um_flags & ULFS_QUOTA2) { 317 uprintf("%s: quotas v2 already enabled\n", 318 mp->mnt_stat.f_mntonname); 319 return (EBUSY); 320 } 321 322 vpp = &ump->um_quotas[type]; 323 324 pb = pathbuf_create(fname); 325 if (pb == NULL) { 326 return ENOMEM; 327 } 328 error = vn_open(NULL, pb, 0, FREAD|FWRITE, 0, &vp, NULL, NULL); 329 if (error != 0) { 330 pathbuf_destroy(pb); 331 return error; 332 } 333 pathbuf_destroy(pb); 334 335 VOP_UNLOCK(vp); 336 if (vp->v_type != VREG) { 337 (void) vn_close(vp, FREAD|FWRITE, l->l_cred); 338 return (EACCES); 339 } 340 if (*vpp != vp) 341 lfsquota1_handle_cmd_quotaoff(l, ump, type); 342 mutex_enter(&lfs_dqlock); 343 while ((ump->umq1_qflags[type] & (QTF_CLOSING | QTF_OPENING)) != 0) 344 cv_wait(&lfs_dqcv, &lfs_dqlock); 345 ump->umq1_qflags[type] |= QTF_OPENING; 346 mutex_exit(&lfs_dqlock); 347 mp->mnt_flag |= MNT_QUOTA; 348 vp->v_vflag |= VV_SYSTEM; /* XXXSMP */ 349 *vpp = vp; 350 /* 351 * Save the credential of the process that turned on quotas. 352 * Set up the time limits for this quota. 353 */ 354 kauth_cred_hold(l->l_cred); 355 ump->um_cred[type] = l->l_cred; 356 ump->umq1_btime[type] = MAX_DQ_TIME; 357 ump->umq1_itime[type] = MAX_IQ_TIME; 358 if (lfs_dqget(NULLVP, 0, ump, type, &dq) == 0) { 359 if (dq->dq_btime > 0) 360 ump->umq1_btime[type] = dq->dq_btime; 361 if (dq->dq_itime > 0) 362 ump->umq1_itime[type] = dq->dq_itime; 363 lfs_dqrele(NULLVP, dq); 364 } 365 /* 366 * Search vnodes associated with this mount point, 367 * adding references to quota file being opened. 368 * NB: only need to add dquot's for inodes being modified. 369 */ 370 vfs_vnode_iterator_init(mp, &marker); 371 while ((vp = vfs_vnode_iterator_next(marker, NULL, NULL))) { 372 error = vn_lock(vp, LK_EXCLUSIVE); 373 if (error) { 374 vrele(vp); 375 continue; 376 } 377 mutex_enter(vp->v_interlock); 378 if (VTOI(vp) == NULL || vp->v_type == VNON || 379 vp->v_writecount == 0) { 380 mutex_exit(vp->v_interlock); 381 vput(vp); 382 continue; 383 } 384 mutex_exit(vp->v_interlock); 385 if ((error = lfs_getinoquota(VTOI(vp))) != 0) { 386 vput(vp); 387 break; 388 } 389 vput(vp); 390 } 391 vfs_vnode_iterator_destroy(marker); 392 393 mutex_enter(&lfs_dqlock); 394 ump->umq1_qflags[type] &= ~QTF_OPENING; 395 cv_broadcast(&lfs_dqcv); 396 if (error == 0) 397 fs->um_flags |= ULFS_QUOTA; 398 mutex_exit(&lfs_dqlock); 399 if (error) 400 lfsquota1_handle_cmd_quotaoff(l, ump, type); 401 return (error); 402 } 403 404 /* 405 * turn off disk quotas for a filesystem. 406 */ 407 int 408 lfsquota1_handle_cmd_quotaoff(struct lwp *l, struct ulfsmount *ump, int type) 409 { 410 struct mount *mp = ump->um_mountp; 411 struct lfs *fs = ump->um_lfs; 412 struct vnode *vp; 413 struct vnode *qvp; 414 struct vnode_iterator *marker; 415 struct dquot *dq; 416 struct inode *ip; 417 kauth_cred_t cred; 418 int i, error; 419 420 mutex_enter(&lfs_dqlock); 421 while ((ump->umq1_qflags[type] & (QTF_CLOSING | QTF_OPENING)) != 0) 422 cv_wait(&lfs_dqcv, &lfs_dqlock); 423 if ((qvp = ump->um_quotas[type]) == NULLVP) { 424 mutex_exit(&lfs_dqlock); 425 return (0); 426 } 427 ump->umq1_qflags[type] |= QTF_CLOSING; 428 fs->um_flags &= ~ULFS_QUOTA; 429 mutex_exit(&lfs_dqlock); 430 /* 431 * Search vnodes associated with this mount point, 432 * deleting any references to quota file being closed. 433 */ 434 vfs_vnode_iterator_init(mp, &marker); 435 while ((vp = vfs_vnode_iterator_next(marker, NULL, NULL))) { 436 error = vn_lock(vp, LK_EXCLUSIVE); 437 if (error) { 438 vrele(vp); 439 continue; 440 } 441 ip = VTOI(vp); 442 if (ip == NULL || vp->v_type == VNON) { 443 vput(vp); 444 continue; 445 } 446 dq = ip->i_dquot[type]; 447 ip->i_dquot[type] = NODQUOT; 448 lfs_dqrele(vp, dq); 449 vput(vp); 450 } 451 vfs_vnode_iterator_destroy(marker); 452 #ifdef DIAGNOSTIC 453 lfs_dqflush(qvp); 454 #endif 455 qvp->v_vflag &= ~VV_SYSTEM; 456 error = vn_close(qvp, FREAD|FWRITE, l->l_cred); 457 mutex_enter(&lfs_dqlock); 458 ump->um_quotas[type] = NULLVP; 459 cred = ump->um_cred[type]; 460 ump->um_cred[type] = NOCRED; 461 for (i = 0; i < ULFS_MAXQUOTAS; i++) 462 if (ump->um_quotas[i] != NULLVP) 463 break; 464 ump->umq1_qflags[type] &= ~QTF_CLOSING; 465 cv_broadcast(&lfs_dqcv); 466 mutex_exit(&lfs_dqlock); 467 kauth_cred_free(cred); 468 if (i == ULFS_MAXQUOTAS) 469 mp->mnt_flag &= ~MNT_QUOTA; 470 return (error); 471 } 472 473 int 474 lfsquota1_handle_cmd_get(struct ulfsmount *ump, const struct quotakey *qk, 475 struct quotaval *qv) 476 { 477 struct dquot *dq; 478 int error; 479 struct quotaval blocks, files; 480 int idtype; 481 id_t id; 482 483 idtype = qk->qk_idtype; 484 id = qk->qk_id; 485 486 if (ump->um_quotas[idtype] == NULLVP) 487 return ENODEV; 488 489 if (id == QUOTA_DEFAULTID) { /* we want the grace period of id 0 */ 490 if ((error = lfs_dqget(NULLVP, 0, ump, idtype, &dq)) != 0) 491 return error; 492 493 } else { 494 if ((error = lfs_dqget(NULLVP, id, ump, idtype, &dq)) != 0) 495 return error; 496 } 497 lfs_dqblk_to_quotavals(&dq->dq_un.dq1_dqb, &blocks, &files); 498 lfs_dqrele(NULLVP, dq); 499 if (id == QUOTA_DEFAULTID) { 500 if (blocks.qv_expiretime > 0) 501 blocks.qv_grace = blocks.qv_expiretime; 502 else 503 blocks.qv_grace = MAX_DQ_TIME; 504 if (files.qv_expiretime > 0) 505 files.qv_grace = files.qv_expiretime; 506 else 507 files.qv_grace = MAX_DQ_TIME; 508 } 509 510 switch (qk->qk_objtype) { 511 case QUOTA_OBJTYPE_BLOCKS: 512 *qv = blocks; 513 break; 514 case QUOTA_OBJTYPE_FILES: 515 *qv = files; 516 break; 517 default: 518 return EINVAL; 519 } 520 521 return 0; 522 } 523 524 static uint32_t 525 quota1_encode_limit(uint64_t lim) 526 { 527 if (lim == QUOTA_NOLIMIT || lim >= 0xffffffff) { 528 return 0; 529 } 530 return lim; 531 } 532 533 int 534 lfsquota1_handle_cmd_put(struct ulfsmount *ump, const struct quotakey *key, 535 const struct quotaval *val) 536 { 537 struct dquot *dq; 538 struct dqblk dqb; 539 int error; 540 541 switch (key->qk_idtype) { 542 case QUOTA_IDTYPE_USER: 543 case QUOTA_IDTYPE_GROUP: 544 break; 545 default: 546 return EINVAL; 547 } 548 549 switch (key->qk_objtype) { 550 case QUOTA_OBJTYPE_BLOCKS: 551 case QUOTA_OBJTYPE_FILES: 552 break; 553 default: 554 return EINVAL; 555 } 556 557 if (ump->um_quotas[key->qk_idtype] == NULLVP) 558 return ENODEV; 559 560 if (key->qk_id == QUOTA_DEFAULTID) { 561 /* just update grace times */ 562 id_t id = 0; 563 564 if ((error = lfs_dqget(NULLVP, id, ump, key->qk_idtype, &dq)) != 0) 565 return error; 566 mutex_enter(&dq->dq_interlock); 567 if (val->qv_grace != QUOTA_NOTIME) { 568 if (key->qk_objtype == QUOTA_OBJTYPE_BLOCKS) 569 ump->umq1_btime[key->qk_idtype] = dq->dq_btime = 570 val->qv_grace; 571 if (key->qk_objtype == QUOTA_OBJTYPE_FILES) 572 ump->umq1_itime[key->qk_idtype] = dq->dq_itime = 573 val->qv_grace; 574 } 575 dq->dq_flags |= DQ_MOD; 576 mutex_exit(&dq->dq_interlock); 577 lfs_dqrele(NULLVP, dq); 578 return 0; 579 } 580 581 if ((error = lfs_dqget(NULLVP, key->qk_id, ump, key->qk_idtype, &dq)) != 0) 582 return (error); 583 mutex_enter(&dq->dq_interlock); 584 /* 585 * Copy all but the current values. 586 * Reset time limit if previously had no soft limit or were 587 * under it, but now have a soft limit and are over it. 588 */ 589 dqb.dqb_curblocks = dq->dq_curblocks; 590 dqb.dqb_curinodes = dq->dq_curinodes; 591 dqb.dqb_btime = dq->dq_btime; 592 dqb.dqb_itime = dq->dq_itime; 593 if (key->qk_objtype == QUOTA_OBJTYPE_BLOCKS) { 594 dqb.dqb_bsoftlimit = quota1_encode_limit(val->qv_softlimit); 595 dqb.dqb_bhardlimit = quota1_encode_limit(val->qv_hardlimit); 596 dqb.dqb_isoftlimit = dq->dq_isoftlimit; 597 dqb.dqb_ihardlimit = dq->dq_ihardlimit; 598 } else { 599 KASSERT(key->qk_objtype == QUOTA_OBJTYPE_FILES); 600 dqb.dqb_bsoftlimit = dq->dq_bsoftlimit; 601 dqb.dqb_bhardlimit = dq->dq_bhardlimit; 602 dqb.dqb_isoftlimit = quota1_encode_limit(val->qv_softlimit); 603 dqb.dqb_ihardlimit = quota1_encode_limit(val->qv_hardlimit); 604 } 605 if (dq->dq_id == 0 && val->qv_grace != QUOTA_NOTIME) { 606 /* also update grace time if available */ 607 if (key->qk_objtype == QUOTA_OBJTYPE_BLOCKS) { 608 ump->umq1_btime[key->qk_idtype] = dqb.dqb_btime = 609 val->qv_grace; 610 } 611 if (key->qk_objtype == QUOTA_OBJTYPE_FILES) { 612 ump->umq1_itime[key->qk_idtype] = dqb.dqb_itime = 613 val->qv_grace; 614 } 615 } 616 if (dqb.dqb_bsoftlimit && 617 dq->dq_curblocks >= dqb.dqb_bsoftlimit && 618 (dq->dq_bsoftlimit == 0 || dq->dq_curblocks < dq->dq_bsoftlimit)) 619 dqb.dqb_btime = time_second + ump->umq1_btime[key->qk_idtype]; 620 if (dqb.dqb_isoftlimit && 621 dq->dq_curinodes >= dqb.dqb_isoftlimit && 622 (dq->dq_isoftlimit == 0 || dq->dq_curinodes < dq->dq_isoftlimit)) 623 dqb.dqb_itime = time_second + ump->umq1_itime[key->qk_idtype]; 624 dq->dq_un.dq1_dqb = dqb; 625 if (dq->dq_curblocks < dq->dq_bsoftlimit) 626 dq->dq_flags &= ~DQ_WARN(QL_BLOCK); 627 if (dq->dq_curinodes < dq->dq_isoftlimit) 628 dq->dq_flags &= ~DQ_WARN(QL_FILE); 629 if (dq->dq_isoftlimit == 0 && dq->dq_bsoftlimit == 0 && 630 dq->dq_ihardlimit == 0 && dq->dq_bhardlimit == 0) 631 dq->dq_flags |= DQ_FAKE; 632 else 633 dq->dq_flags &= ~DQ_FAKE; 634 dq->dq_flags |= DQ_MOD; 635 mutex_exit(&dq->dq_interlock); 636 lfs_dqrele(NULLVP, dq); 637 return (0); 638 } 639 640 641 #if 0 642 /* 643 * Q_SETQUOTA - assign an entire dqblk structure. 644 */ 645 int 646 setquota1(struct mount *mp, u_long id, int type, struct dqblk *dqb) 647 { 648 struct dquot *dq; 649 struct dquot *ndq; 650 struct ulfsmount *ump = VFSTOULFS(mp); 651 652 653 if ((error = lfs_dqget(NULLVP, id, ump, type, &ndq)) != 0) 654 return (error); 655 dq = ndq; 656 mutex_enter(&dq->dq_interlock); 657 /* 658 * Copy all but the current values. 659 * Reset time limit if previously had no soft limit or were 660 * under it, but now have a soft limit and are over it. 661 */ 662 dqb->dqb_curblocks = dq->dq_curblocks; 663 dqb->dqb_curinodes = dq->dq_curinodes; 664 if (dq->dq_id != 0) { 665 dqb->dqb_btime = dq->dq_btime; 666 dqb->dqb_itime = dq->dq_itime; 667 } 668 if (dqb->dqb_bsoftlimit && 669 dq->dq_curblocks >= dqb->dqb_bsoftlimit && 670 (dq->dq_bsoftlimit == 0 || dq->dq_curblocks < dq->dq_bsoftlimit)) 671 dqb->dqb_btime = time_second + ump->umq1_btime[type]; 672 if (dqb->dqb_isoftlimit && 673 dq->dq_curinodes >= dqb->dqb_isoftlimit && 674 (dq->dq_isoftlimit == 0 || dq->dq_curinodes < dq->dq_isoftlimit)) 675 dqb->dqb_itime = time_second + ump->umq1_itime[type]; 676 dq->dq_un.dq1_dqb = *dqb; 677 if (dq->dq_curblocks < dq->dq_bsoftlimit) 678 dq->dq_flags &= ~DQ_WARN(QL_BLOCK); 679 if (dq->dq_curinodes < dq->dq_isoftlimit) 680 dq->dq_flags &= ~DQ_WARN(QL_FILE); 681 if (dq->dq_isoftlimit == 0 && dq->dq_bsoftlimit == 0 && 682 dq->dq_ihardlimit == 0 && dq->dq_bhardlimit == 0) 683 dq->dq_flags |= DQ_FAKE; 684 else 685 dq->dq_flags &= ~DQ_FAKE; 686 dq->dq_flags |= DQ_MOD; 687 mutex_exit(&dq->dq_interlock); 688 lfs_dqrele(NULLVP, dq); 689 return (0); 690 } 691 692 /* 693 * Q_SETUSE - set current inode and block usage. 694 */ 695 int 696 setuse(struct mount *mp, u_long id, int type, void *addr) 697 { 698 struct dquot *dq; 699 struct ulfsmount *ump = VFSTOULFS(mp); 700 struct dquot *ndq; 701 struct dqblk usage; 702 int error; 703 704 error = copyin(addr, (void *)&usage, sizeof (struct dqblk)); 705 if (error) 706 return (error); 707 if ((error = lfs_dqget(NULLVP, id, ump, type, &ndq)) != 0) 708 return (error); 709 dq = ndq; 710 mutex_enter(&dq->dq_interlock); 711 /* 712 * Reset time limit if have a soft limit and were 713 * previously under it, but are now over it. 714 */ 715 if (dq->dq_bsoftlimit && dq->dq_curblocks < dq->dq_bsoftlimit && 716 usage.dqb_curblocks >= dq->dq_bsoftlimit) 717 dq->dq_btime = time_second + ump->umq1_btime[type]; 718 if (dq->dq_isoftlimit && dq->dq_curinodes < dq->dq_isoftlimit && 719 usage.dqb_curinodes >= dq->dq_isoftlimit) 720 dq->dq_itime = time_second + ump->umq1_itime[type]; 721 dq->dq_curblocks = usage.dqb_curblocks; 722 dq->dq_curinodes = usage.dqb_curinodes; 723 if (dq->dq_curblocks < dq->dq_bsoftlimit) 724 dq->dq_flags &= ~DQ_WARN(QL_BLOCK); 725 if (dq->dq_curinodes < dq->dq_isoftlimit) 726 dq->dq_flags &= ~DQ_WARN(QL_FILE); 727 dq->dq_flags |= DQ_MOD; 728 mutex_exit(&dq->dq_interlock); 729 lfs_dqrele(NULLVP, dq); 730 return (0); 731 } 732 #endif 733 734 /* 735 * Q_SYNC - sync quota files to disk. 736 */ 737 int 738 lfs_q1sync(struct mount *mp) 739 { 740 struct ulfsmount *ump = VFSTOULFS(mp); 741 struct vnode *vp; 742 struct vnode_iterator *marker; 743 struct dquot *dq; 744 int i, error; 745 746 /* 747 * Check if the mount point has any quotas. 748 * If not, simply return. 749 */ 750 for (i = 0; i < ULFS_MAXQUOTAS; i++) 751 if (ump->um_quotas[i] != NULLVP) 752 break; 753 if (i == ULFS_MAXQUOTAS) 754 return (0); 755 756 /* 757 * Search vnodes associated with this mount point, 758 * synchronizing any modified dquot structures. 759 */ 760 vfs_vnode_iterator_init(mp, &marker); 761 while ((vp = vfs_vnode_iterator_next(marker, NULL, NULL))) { 762 error = vn_lock(vp, LK_EXCLUSIVE); 763 if (error) { 764 vrele(vp); 765 continue; 766 } 767 if (VTOI(vp) == NULL || vp->v_type == VNON) { 768 vput(vp); 769 continue; 770 } 771 for (i = 0; i < ULFS_MAXQUOTAS; i++) { 772 dq = VTOI(vp)->i_dquot[i]; 773 if (dq == NODQUOT) 774 continue; 775 mutex_enter(&dq->dq_interlock); 776 if (dq->dq_flags & DQ_MOD) 777 lfs_dq1sync(vp, dq); 778 mutex_exit(&dq->dq_interlock); 779 } 780 vput(vp); 781 } 782 vfs_vnode_iterator_destroy(marker); 783 return (0); 784 } 785 786 /* 787 * Obtain a dquot structure for the specified identifier and quota file 788 * reading the information from the file if necessary. 789 */ 790 int 791 lfs_dq1get(struct vnode *dqvp, u_long id, struct ulfsmount *ump, int type, 792 struct dquot *dq) 793 { 794 struct iovec aiov; 795 struct uio auio; 796 int error; 797 798 KASSERT(mutex_owned(&dq->dq_interlock)); 799 vn_lock(dqvp, LK_EXCLUSIVE | LK_RETRY); 800 auio.uio_iov = &aiov; 801 auio.uio_iovcnt = 1; 802 aiov.iov_base = (void *)&dq->dq_un.dq1_dqb; 803 aiov.iov_len = sizeof (struct dqblk); 804 auio.uio_resid = sizeof (struct dqblk); 805 auio.uio_offset = (off_t)id * sizeof (struct dqblk); 806 auio.uio_rw = UIO_READ; 807 UIO_SETUP_SYSSPACE(&auio); 808 error = VOP_READ(dqvp, &auio, 0, ump->um_cred[type]); 809 if (auio.uio_resid == sizeof(struct dqblk) && error == 0) 810 memset((void *)&dq->dq_un.dq1_dqb, 0, sizeof(struct dqblk)); 811 VOP_UNLOCK(dqvp); 812 /* 813 * I/O error in reading quota file, release 814 * quota structure and reflect problem to caller. 815 */ 816 if (error) 817 return (error); 818 /* 819 * Check for no limit to enforce. 820 * Initialize time values if necessary. 821 */ 822 if (dq->dq_isoftlimit == 0 && dq->dq_bsoftlimit == 0 && 823 dq->dq_ihardlimit == 0 && dq->dq_bhardlimit == 0) 824 dq->dq_flags |= DQ_FAKE; 825 if (dq->dq_id != 0) { 826 if (dq->dq_btime == 0) 827 dq->dq_btime = time_second + ump->umq1_btime[type]; 828 if (dq->dq_itime == 0) 829 dq->dq_itime = time_second + ump->umq1_itime[type]; 830 } 831 return (0); 832 } 833 834 /* 835 * Update the disk quota in the quota file. 836 */ 837 int 838 lfs_dq1sync(struct vnode *vp, struct dquot *dq) 839 { 840 struct vnode *dqvp; 841 struct iovec aiov; 842 struct uio auio; 843 int error; 844 845 if (dq == NODQUOT) 846 panic("dq1sync: dquot"); 847 KASSERT(mutex_owned(&dq->dq_interlock)); 848 if ((dq->dq_flags & DQ_MOD) == 0) 849 return (0); 850 if ((dqvp = dq->dq_ump->um_quotas[dq->dq_type]) == NULLVP) 851 panic("dq1sync: file"); 852 KASSERT(dqvp != vp); 853 vn_lock(dqvp, LK_EXCLUSIVE | LK_RETRY); 854 auio.uio_iov = &aiov; 855 auio.uio_iovcnt = 1; 856 aiov.iov_base = (void *)&dq->dq_un.dq1_dqb; 857 aiov.iov_len = sizeof (struct dqblk); 858 auio.uio_resid = sizeof (struct dqblk); 859 auio.uio_offset = (off_t)dq->dq_id * sizeof (struct dqblk); 860 auio.uio_rw = UIO_WRITE; 861 UIO_SETUP_SYSSPACE(&auio); 862 error = VOP_WRITE(dqvp, &auio, 0, dq->dq_ump->um_cred[dq->dq_type]); 863 if (auio.uio_resid && error == 0) 864 error = EIO; 865 dq->dq_flags &= ~DQ_MOD; 866 VOP_UNLOCK(dqvp); 867 return (error); 868 } 869
Indexes created Sat Sep 20 22:09:52 GMT 2025