ulfs_quota1.c revision 1.11
1 /* $NetBSD: ulfs_quota1.c,v 1.11 2016/06/20 00:53:10 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 1.11 2016/06/20 00:53:10 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 struct nameidata nd; 316 317 if (fs->um_flags & ULFS_QUOTA2) { 318 uprintf("%s: quotas v2 already enabled\n", 319 mp->mnt_stat.f_mntonname); 320 return (EBUSY); 321 } 322 323 vpp = &ump->um_quotas[type]; 324 325 pb = pathbuf_create(fname); 326 if (pb == NULL) { 327 return ENOMEM; 328 } 329 NDINIT(&nd, LOOKUP, FOLLOW, pb); 330 if ((error = vn_open(&nd, FREAD|FWRITE, 0)) != 0) { 331 pathbuf_destroy(pb); 332 return error; 333 } 334 vp = nd.ni_vp; 335 pathbuf_destroy(pb); 336 337 VOP_UNLOCK(vp); 338 if (vp->v_type != VREG) { 339 (void) vn_close(vp, FREAD|FWRITE, l->l_cred); 340 return (EACCES); 341 } 342 if (*vpp != vp) 343 lfsquota1_handle_cmd_quotaoff(l, ump, type); 344 mutex_enter(&lfs_dqlock); 345 while ((ump->umq1_qflags[type] & (QTF_CLOSING | QTF_OPENING)) != 0) 346 cv_wait(&lfs_dqcv, &lfs_dqlock); 347 ump->umq1_qflags[type] |= QTF_OPENING; 348 mutex_exit(&lfs_dqlock); 349 mp->mnt_flag |= MNT_QUOTA; 350 vp->v_vflag |= VV_SYSTEM; /* XXXSMP */ 351 *vpp = vp; 352 /* 353 * Save the credential of the process that turned on quotas. 354 * Set up the time limits for this quota. 355 */ 356 kauth_cred_hold(l->l_cred); 357 ump->um_cred[type] = l->l_cred; 358 ump->umq1_btime[type] = MAX_DQ_TIME; 359 ump->umq1_itime[type] = MAX_IQ_TIME; 360 if (lfs_dqget(NULLVP, 0, ump, type, &dq) == 0) { 361 if (dq->dq_btime > 0) 362 ump->umq1_btime[type] = dq->dq_btime; 363 if (dq->dq_itime > 0) 364 ump->umq1_itime[type] = dq->dq_itime; 365 lfs_dqrele(NULLVP, dq); 366 } 367 /* 368 * Search vnodes associated with this mount point, 369 * adding references to quota file being opened. 370 * NB: only need to add dquot's for inodes being modified. 371 */ 372 vfs_vnode_iterator_init(mp, &marker); 373 while ((vp = vfs_vnode_iterator_next(marker, NULL, NULL))) { 374 error = vn_lock(vp, LK_EXCLUSIVE); 375 if (error) { 376 vrele(vp); 377 continue; 378 } 379 mutex_enter(vp->v_interlock); 380 if (VTOI(vp) == NULL || vp->v_type == VNON || 381 vp->v_writecount == 0) { 382 mutex_exit(vp->v_interlock); 383 vput(vp); 384 continue; 385 } 386 mutex_exit(vp->v_interlock); 387 if ((error = lfs_getinoquota(VTOI(vp))) != 0) { 388 vput(vp); 389 break; 390 } 391 vput(vp); 392 } 393 vfs_vnode_iterator_destroy(marker); 394 395 mutex_enter(&lfs_dqlock); 396 ump->umq1_qflags[type] &= ~QTF_OPENING; 397 cv_broadcast(&lfs_dqcv); 398 if (error == 0) 399 fs->um_flags |= ULFS_QUOTA; 400 mutex_exit(&lfs_dqlock); 401 if (error) 402 lfsquota1_handle_cmd_quotaoff(l, ump, type); 403 return (error); 404 } 405 406 /* 407 * turn off disk quotas for a filesystem. 408 */ 409 int 410 lfsquota1_handle_cmd_quotaoff(struct lwp *l, struct ulfsmount *ump, int type) 411 { 412 struct mount *mp = ump->um_mountp; 413 struct lfs *fs = ump->um_lfs; 414 struct vnode *vp; 415 struct vnode *qvp; 416 struct vnode_iterator *marker; 417 struct dquot *dq; 418 struct inode *ip; 419 kauth_cred_t cred; 420 int i, error; 421 422 mutex_enter(&lfs_dqlock); 423 while ((ump->umq1_qflags[type] & (QTF_CLOSING | QTF_OPENING)) != 0) 424 cv_wait(&lfs_dqcv, &lfs_dqlock); 425 if ((qvp = ump->um_quotas[type]) == NULLVP) { 426 mutex_exit(&lfs_dqlock); 427 return (0); 428 } 429 ump->umq1_qflags[type] |= QTF_CLOSING; 430 fs->um_flags &= ~ULFS_QUOTA; 431 mutex_exit(&lfs_dqlock); 432 /* 433 * Search vnodes associated with this mount point, 434 * deleting any references to quota file being closed. 435 */ 436 vfs_vnode_iterator_init(mp, &marker); 437 while ((vp = vfs_vnode_iterator_next(marker, NULL, NULL))) { 438 error = vn_lock(vp, LK_EXCLUSIVE); 439 if (error) { 440 vrele(vp); 441 continue; 442 } 443 ip = VTOI(vp); 444 if (ip == NULL || vp->v_type == VNON) { 445 vput(vp); 446 continue; 447 } 448 dq = ip->i_dquot[type]; 449 ip->i_dquot[type] = NODQUOT; 450 lfs_dqrele(vp, dq); 451 vput(vp); 452 } 453 vfs_vnode_iterator_destroy(marker); 454 #ifdef DIAGNOSTIC 455 lfs_dqflush(qvp); 456 #endif 457 qvp->v_vflag &= ~VV_SYSTEM; 458 error = vn_close(qvp, FREAD|FWRITE, l->l_cred); 459 mutex_enter(&lfs_dqlock); 460 ump->um_quotas[type] = NULLVP; 461 cred = ump->um_cred[type]; 462 ump->um_cred[type] = NOCRED; 463 for (i = 0; i < ULFS_MAXQUOTAS; i++) 464 if (ump->um_quotas[i] != NULLVP) 465 break; 466 ump->umq1_qflags[type] &= ~QTF_CLOSING; 467 cv_broadcast(&lfs_dqcv); 468 mutex_exit(&lfs_dqlock); 469 kauth_cred_free(cred); 470 if (i == ULFS_MAXQUOTAS) 471 mp->mnt_flag &= ~MNT_QUOTA; 472 return (error); 473 } 474 475 int 476 lfsquota1_handle_cmd_get(struct ulfsmount *ump, const struct quotakey *qk, 477 struct quotaval *qv) 478 { 479 struct dquot *dq; 480 int error; 481 struct quotaval blocks, files; 482 int idtype; 483 id_t id; 484 485 idtype = qk->qk_idtype; 486 id = qk->qk_id; 487 488 if (ump->um_quotas[idtype] == NULLVP) 489 return ENODEV; 490 491 if (id == QUOTA_DEFAULTID) { /* we want the grace period of id 0 */ 492 if ((error = lfs_dqget(NULLVP, 0, ump, idtype, &dq)) != 0) 493 return error; 494 495 } else { 496 if ((error = lfs_dqget(NULLVP, id, ump, idtype, &dq)) != 0) 497 return error; 498 } 499 lfs_dqblk_to_quotavals(&dq->dq_un.dq1_dqb, &blocks, &files); 500 lfs_dqrele(NULLVP, dq); 501 if (id == QUOTA_DEFAULTID) { 502 if (blocks.qv_expiretime > 0) 503 blocks.qv_grace = blocks.qv_expiretime; 504 else 505 blocks.qv_grace = MAX_DQ_TIME; 506 if (files.qv_expiretime > 0) 507 files.qv_grace = files.qv_expiretime; 508 else 509 files.qv_grace = MAX_DQ_TIME; 510 } 511 512 switch (qk->qk_objtype) { 513 case QUOTA_OBJTYPE_BLOCKS: 514 *qv = blocks; 515 break; 516 case QUOTA_OBJTYPE_FILES: 517 *qv = files; 518 break; 519 default: 520 return EINVAL; 521 } 522 523 return 0; 524 } 525 526 static uint32_t 527 quota1_encode_limit(uint64_t lim) 528 { 529 if (lim == QUOTA_NOLIMIT || lim >= 0xffffffff) { 530 return 0; 531 } 532 return lim; 533 } 534 535 int 536 lfsquota1_handle_cmd_put(struct ulfsmount *ump, const struct quotakey *key, 537 const struct quotaval *val) 538 { 539 struct dquot *dq; 540 struct dqblk dqb; 541 int error; 542 543 switch (key->qk_idtype) { 544 case QUOTA_IDTYPE_USER: 545 case QUOTA_IDTYPE_GROUP: 546 break; 547 default: 548 return EINVAL; 549 } 550 551 switch (key->qk_objtype) { 552 case QUOTA_OBJTYPE_BLOCKS: 553 case QUOTA_OBJTYPE_FILES: 554 break; 555 default: 556 return EINVAL; 557 } 558 559 if (ump->um_quotas[key->qk_idtype] == NULLVP) 560 return ENODEV; 561 562 if (key->qk_id == QUOTA_DEFAULTID) { 563 /* just update grace times */ 564 id_t id = 0; 565 566 if ((error = lfs_dqget(NULLVP, id, ump, key->qk_idtype, &dq)) != 0) 567 return error; 568 mutex_enter(&dq->dq_interlock); 569 if (val->qv_grace != QUOTA_NOTIME) { 570 if (key->qk_objtype == QUOTA_OBJTYPE_BLOCKS) 571 ump->umq1_btime[key->qk_idtype] = dq->dq_btime = 572 val->qv_grace; 573 if (key->qk_objtype == QUOTA_OBJTYPE_FILES) 574 ump->umq1_itime[key->qk_idtype] = dq->dq_itime = 575 val->qv_grace; 576 } 577 dq->dq_flags |= DQ_MOD; 578 mutex_exit(&dq->dq_interlock); 579 lfs_dqrele(NULLVP, dq); 580 return 0; 581 } 582 583 if ((error = lfs_dqget(NULLVP, key->qk_id, ump, key->qk_idtype, &dq)) != 0) 584 return (error); 585 mutex_enter(&dq->dq_interlock); 586 /* 587 * Copy all but the current values. 588 * Reset time limit if previously had no soft limit or were 589 * under it, but now have a soft limit and are over it. 590 */ 591 dqb.dqb_curblocks = dq->dq_curblocks; 592 dqb.dqb_curinodes = dq->dq_curinodes; 593 dqb.dqb_btime = dq->dq_btime; 594 dqb.dqb_itime = dq->dq_itime; 595 if (key->qk_objtype == QUOTA_OBJTYPE_BLOCKS) { 596 dqb.dqb_bsoftlimit = quota1_encode_limit(val->qv_softlimit); 597 dqb.dqb_bhardlimit = quota1_encode_limit(val->qv_hardlimit); 598 dqb.dqb_isoftlimit = dq->dq_isoftlimit; 599 dqb.dqb_ihardlimit = dq->dq_ihardlimit; 600 } else { 601 KASSERT(key->qk_objtype == QUOTA_OBJTYPE_FILES); 602 dqb.dqb_bsoftlimit = dq->dq_bsoftlimit; 603 dqb.dqb_bhardlimit = dq->dq_bhardlimit; 604 dqb.dqb_isoftlimit = quota1_encode_limit(val->qv_softlimit); 605 dqb.dqb_ihardlimit = quota1_encode_limit(val->qv_hardlimit); 606 } 607 if (dq->dq_id == 0 && val->qv_grace != QUOTA_NOTIME) { 608 /* also update grace time if available */ 609 if (key->qk_objtype == QUOTA_OBJTYPE_BLOCKS) { 610 ump->umq1_btime[key->qk_idtype] = dqb.dqb_btime = 611 val->qv_grace; 612 } 613 if (key->qk_objtype == QUOTA_OBJTYPE_FILES) { 614 ump->umq1_itime[key->qk_idtype] = dqb.dqb_itime = 615 val->qv_grace; 616 } 617 } 618 if (dqb.dqb_bsoftlimit && 619 dq->dq_curblocks >= dqb.dqb_bsoftlimit && 620 (dq->dq_bsoftlimit == 0 || dq->dq_curblocks < dq->dq_bsoftlimit)) 621 dqb.dqb_btime = time_second + ump->umq1_btime[key->qk_idtype]; 622 if (dqb.dqb_isoftlimit && 623 dq->dq_curinodes >= dqb.dqb_isoftlimit && 624 (dq->dq_isoftlimit == 0 || dq->dq_curinodes < dq->dq_isoftlimit)) 625 dqb.dqb_itime = time_second + ump->umq1_itime[key->qk_idtype]; 626 dq->dq_un.dq1_dqb = dqb; 627 if (dq->dq_curblocks < dq->dq_bsoftlimit) 628 dq->dq_flags &= ~DQ_WARN(QL_BLOCK); 629 if (dq->dq_curinodes < dq->dq_isoftlimit) 630 dq->dq_flags &= ~DQ_WARN(QL_FILE); 631 if (dq->dq_isoftlimit == 0 && dq->dq_bsoftlimit == 0 && 632 dq->dq_ihardlimit == 0 && dq->dq_bhardlimit == 0) 633 dq->dq_flags |= DQ_FAKE; 634 else 635 dq->dq_flags &= ~DQ_FAKE; 636 dq->dq_flags |= DQ_MOD; 637 mutex_exit(&dq->dq_interlock); 638 lfs_dqrele(NULLVP, dq); 639 return (0); 640 } 641 642 643 #if 0 644 /* 645 * Q_SETQUOTA - assign an entire dqblk structure. 646 */ 647 int 648 setquota1(struct mount *mp, u_long id, int type, struct dqblk *dqb) 649 { 650 struct dquot *dq; 651 struct dquot *ndq; 652 struct ulfsmount *ump = VFSTOULFS(mp); 653 654 655 if ((error = lfs_dqget(NULLVP, id, ump, type, &ndq)) != 0) 656 return (error); 657 dq = ndq; 658 mutex_enter(&dq->dq_interlock); 659 /* 660 * Copy all but the current values. 661 * Reset time limit if previously had no soft limit or were 662 * under it, but now have a soft limit and are over it. 663 */ 664 dqb->dqb_curblocks = dq->dq_curblocks; 665 dqb->dqb_curinodes = dq->dq_curinodes; 666 if (dq->dq_id != 0) { 667 dqb->dqb_btime = dq->dq_btime; 668 dqb->dqb_itime = dq->dq_itime; 669 } 670 if (dqb->dqb_bsoftlimit && 671 dq->dq_curblocks >= dqb->dqb_bsoftlimit && 672 (dq->dq_bsoftlimit == 0 || dq->dq_curblocks < dq->dq_bsoftlimit)) 673 dqb->dqb_btime = time_second + ump->umq1_btime[type]; 674 if (dqb->dqb_isoftlimit && 675 dq->dq_curinodes >= dqb->dqb_isoftlimit && 676 (dq->dq_isoftlimit == 0 || dq->dq_curinodes < dq->dq_isoftlimit)) 677 dqb->dqb_itime = time_second + ump->umq1_itime[type]; 678 dq->dq_un.dq1_dqb = *dqb; 679 if (dq->dq_curblocks < dq->dq_bsoftlimit) 680 dq->dq_flags &= ~DQ_WARN(QL_BLOCK); 681 if (dq->dq_curinodes < dq->dq_isoftlimit) 682 dq->dq_flags &= ~DQ_WARN(QL_FILE); 683 if (dq->dq_isoftlimit == 0 && dq->dq_bsoftlimit == 0 && 684 dq->dq_ihardlimit == 0 && dq->dq_bhardlimit == 0) 685 dq->dq_flags |= DQ_FAKE; 686 else 687 dq->dq_flags &= ~DQ_FAKE; 688 dq->dq_flags |= DQ_MOD; 689 mutex_exit(&dq->dq_interlock); 690 lfs_dqrele(NULLVP, dq); 691 return (0); 692 } 693 694 /* 695 * Q_SETUSE - set current inode and block usage. 696 */ 697 int 698 setuse(struct mount *mp, u_long id, int type, void *addr) 699 { 700 struct dquot *dq; 701 struct ulfsmount *ump = VFSTOULFS(mp); 702 struct dquot *ndq; 703 struct dqblk usage; 704 int error; 705 706 error = copyin(addr, (void *)&usage, sizeof (struct dqblk)); 707 if (error) 708 return (error); 709 if ((error = lfs_dqget(NULLVP, id, ump, type, &ndq)) != 0) 710 return (error); 711 dq = ndq; 712 mutex_enter(&dq->dq_interlock); 713 /* 714 * Reset time limit if have a soft limit and were 715 * previously under it, but are now over it. 716 */ 717 if (dq->dq_bsoftlimit && dq->dq_curblocks < dq->dq_bsoftlimit && 718 usage.dqb_curblocks >= dq->dq_bsoftlimit) 719 dq->dq_btime = time_second + ump->umq1_btime[type]; 720 if (dq->dq_isoftlimit && dq->dq_curinodes < dq->dq_isoftlimit && 721 usage.dqb_curinodes >= dq->dq_isoftlimit) 722 dq->dq_itime = time_second + ump->umq1_itime[type]; 723 dq->dq_curblocks = usage.dqb_curblocks; 724 dq->dq_curinodes = usage.dqb_curinodes; 725 if (dq->dq_curblocks < dq->dq_bsoftlimit) 726 dq->dq_flags &= ~DQ_WARN(QL_BLOCK); 727 if (dq->dq_curinodes < dq->dq_isoftlimit) 728 dq->dq_flags &= ~DQ_WARN(QL_FILE); 729 dq->dq_flags |= DQ_MOD; 730 mutex_exit(&dq->dq_interlock); 731 lfs_dqrele(NULLVP, dq); 732 return (0); 733 } 734 #endif 735 736 /* 737 * Q_SYNC - sync quota files to disk. 738 */ 739 int 740 lfs_q1sync(struct mount *mp) 741 { 742 struct ulfsmount *ump = VFSTOULFS(mp); 743 struct vnode *vp; 744 struct vnode_iterator *marker; 745 struct dquot *dq; 746 int i, error; 747 748 /* 749 * Check if the mount point has any quotas. 750 * If not, simply return. 751 */ 752 for (i = 0; i < ULFS_MAXQUOTAS; i++) 753 if (ump->um_quotas[i] != NULLVP) 754 break; 755 if (i == ULFS_MAXQUOTAS) 756 return (0); 757 758 /* 759 * Search vnodes associated with this mount point, 760 * synchronizing any modified dquot structures. 761 */ 762 vfs_vnode_iterator_init(mp, &marker); 763 while ((vp = vfs_vnode_iterator_next(marker, NULL, NULL))) { 764 error = vn_lock(vp, LK_EXCLUSIVE); 765 if (error) { 766 vrele(vp); 767 continue; 768 } 769 if (VTOI(vp) == NULL || vp->v_type == VNON) { 770 vput(vp); 771 continue; 772 } 773 for (i = 0; i < ULFS_MAXQUOTAS; i++) { 774 dq = VTOI(vp)->i_dquot[i]; 775 if (dq == NODQUOT) 776 continue; 777 mutex_enter(&dq->dq_interlock); 778 if (dq->dq_flags & DQ_MOD) 779 lfs_dq1sync(vp, dq); 780 mutex_exit(&dq->dq_interlock); 781 } 782 vput(vp); 783 } 784 vfs_vnode_iterator_destroy(marker); 785 return (0); 786 } 787 788 /* 789 * Obtain a dquot structure for the specified identifier and quota file 790 * reading the information from the file if necessary. 791 */ 792 int 793 lfs_dq1get(struct vnode *dqvp, u_long id, struct ulfsmount *ump, int type, 794 struct dquot *dq) 795 { 796 struct iovec aiov; 797 struct uio auio; 798 int error; 799 800 KASSERT(mutex_owned(&dq->dq_interlock)); 801 vn_lock(dqvp, LK_EXCLUSIVE | LK_RETRY); 802 auio.uio_iov = &aiov; 803 auio.uio_iovcnt = 1; 804 aiov.iov_base = (void *)&dq->dq_un.dq1_dqb; 805 aiov.iov_len = sizeof (struct dqblk); 806 auio.uio_resid = sizeof (struct dqblk); 807 auio.uio_offset = (off_t)id * sizeof (struct dqblk); 808 auio.uio_rw = UIO_READ; 809 UIO_SETUP_SYSSPACE(&auio); 810 error = VOP_READ(dqvp, &auio, 0, ump->um_cred[type]); 811 if (auio.uio_resid == sizeof(struct dqblk) && error == 0) 812 memset((void *)&dq->dq_un.dq1_dqb, 0, sizeof(struct dqblk)); 813 VOP_UNLOCK(dqvp); 814 /* 815 * I/O error in reading quota file, release 816 * quota structure and reflect problem to caller. 817 */ 818 if (error) 819 return (error); 820 /* 821 * Check for no limit to enforce. 822 * Initialize time values if necessary. 823 */ 824 if (dq->dq_isoftlimit == 0 && dq->dq_bsoftlimit == 0 && 825 dq->dq_ihardlimit == 0 && dq->dq_bhardlimit == 0) 826 dq->dq_flags |= DQ_FAKE; 827 if (dq->dq_id != 0) { 828 if (dq->dq_btime == 0) 829 dq->dq_btime = time_second + ump->umq1_btime[type]; 830 if (dq->dq_itime == 0) 831 dq->dq_itime = time_second + ump->umq1_itime[type]; 832 } 833 return (0); 834 } 835 836 /* 837 * Update the disk quota in the quota file. 838 */ 839 int 840 lfs_dq1sync(struct vnode *vp, struct dquot *dq) 841 { 842 struct vnode *dqvp; 843 struct iovec aiov; 844 struct uio auio; 845 int error; 846 847 if (dq == NODQUOT) 848 panic("dq1sync: dquot"); 849 KASSERT(mutex_owned(&dq->dq_interlock)); 850 if ((dq->dq_flags & DQ_MOD) == 0) 851 return (0); 852 if ((dqvp = dq->dq_ump->um_quotas[dq->dq_type]) == NULLVP) 853 panic("dq1sync: file"); 854 KASSERT(dqvp != vp); 855 vn_lock(dqvp, LK_EXCLUSIVE | LK_RETRY); 856 auio.uio_iov = &aiov; 857 auio.uio_iovcnt = 1; 858 aiov.iov_base = (void *)&dq->dq_un.dq1_dqb; 859 aiov.iov_len = sizeof (struct dqblk); 860 auio.uio_resid = sizeof (struct dqblk); 861 auio.uio_offset = (off_t)dq->dq_id * sizeof (struct dqblk); 862 auio.uio_rw = UIO_WRITE; 863 UIO_SETUP_SYSSPACE(&auio); 864 error = VOP_WRITE(dqvp, &auio, 0, dq->dq_ump->um_cred[dq->dq_type]); 865 if (auio.uio_resid && error == 0) 866 error = EIO; 867 dq->dq_flags &= ~DQ_MOD; 868 VOP_UNLOCK(dqvp); 869 return (error); 870 } 871
Indexes created Wed Oct 01 15:09:59 GMT 2025