| 1 | /* |
| 2 | * modified for Lites 1.1 |
| 3 | * |
| 4 | * Aug 1995, Godmar Back (gback@cs.utah.edu) |
| 5 | * University of Utah, Department of Computer Science |
| 6 | */ |
| 7 | /* |
| 8 | * Copyright (c) 1982, 1986, 1989, 1993 |
| 9 | * The Regents of the University of California. All rights reserved. |
| 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. All advertising materials mentioning features or use of this software |
| 20 | * must display the following acknowledgement: |
| 21 | * This product includes software developed by the University of |
| 22 | * California, Berkeley and its contributors. |
| 23 | * 4. Neither the name of the University nor the names of its contributors |
| 24 | * may be used to endorse or promote products derived from this software |
| 25 | * without specific prior written permission. |
| 26 | * |
| 27 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 28 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 29 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 30 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 31 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 32 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 33 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 34 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 35 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 36 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 37 | * SUCH DAMAGE. |
| 38 | * |
| 39 | * @(#)ext2_inode.c 8.5 (Berkeley) 12/30/93 |
| 40 | * $FreeBSD: src/sys/gnu/ext2fs/ext2_inode.c,v 1.24.2.1 2000/08/03 00:52:57 peter Exp $ |
| 41 | * $DragonFly: src/sys/vfs/gnu/ext2fs/ext2_inode.c,v 1.18 2006/05/06 02:43:13 dillon Exp $ |
| 42 | */ |
| 43 | |
| 44 | #include "opt_quota.h" |
| 45 | |
| 46 | #include <sys/param.h> |
| 47 | #include <sys/systm.h> |
| 48 | #include <sys/mount.h> |
| 49 | #include <sys/buf.h> |
| 50 | #include <sys/vnode.h> |
| 51 | #include <sys/malloc.h> |
| 52 | |
| 53 | #include <vm/vm.h> |
| 54 | #include <vm/vm_extern.h> |
| 55 | |
| 56 | #include "quota.h" |
| 57 | #include "inode.h" |
| 58 | #include "ext2mount.h" |
| 59 | |
| 60 | #include "ext2_fs.h" |
| 61 | #include "ext2_fs_sb.h" |
| 62 | #include "fs.h" |
| 63 | #include "ext2_extern.h" |
| 64 | |
| 65 | static int ext2_indirtrunc (struct inode *, daddr_t, off_t, daddr_t, |
| 66 | int, long *); |
| 67 | |
| 68 | /* |
| 69 | * Update the access, modified, and inode change times as specified by the |
| 70 | * IN_ACCESS, IN_UPDATE, and IN_CHANGE flags respectively. Write the inode |
| 71 | * to disk if the IN_MODIFIED flag is set (it may be set initially, or by |
| 72 | * the timestamp update). The IN_LAZYMOD flag is set to force a write |
| 73 | * later if not now. If we write now, then clear both IN_MODIFIED and |
| 74 | * IN_LAZYMOD to reflect the presumably successful write, and if waitfor is |
| 75 | * set, then wait for the write to complete. |
| 76 | */ |
| 77 | int |
| 78 | ext2_update(struct vnode *vp, int waitfor) |
| 79 | { |
| 80 | struct ext2_sb_info *fs; |
| 81 | struct buf *bp; |
| 82 | struct inode *ip; |
| 83 | int error; |
| 84 | |
| 85 | ext2_itimes(vp); |
| 86 | ip = VTOI(vp); |
| 87 | if ((ip->i_flag & IN_MODIFIED) == 0) |
| 88 | return (0); |
| 89 | ip->i_flag &= ~(IN_LAZYMOD | IN_MODIFIED); |
| 90 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
| 91 | return (0); |
| 92 | fs = ip->i_e2fs; |
| 93 | error = bread(ip->i_devvp, |
| 94 | fsbtodoff(fs, ino_to_fsba(fs, ip->i_number)), |
| 95 | (int)fs->s_blocksize, &bp); |
| 96 | if (error) { |
| 97 | brelse(bp); |
| 98 | return (error); |
| 99 | } |
| 100 | ext2_di2ei( &ip->i_din, (struct ext2_inode *) ((char *)bp->b_data + EXT2_INODE_SIZE * |
| 101 | ino_to_fsbo(fs, ip->i_number))); |
| 102 | /* |
| 103 | if (waitfor && (vp->v_mount->mnt_flag & MNT_ASYNC) == 0) |
| 104 | return (bwrite(bp)); |
| 105 | else { |
| 106 | */ |
| 107 | bdwrite(bp); |
| 108 | return (0); |
| 109 | /* |
| 110 | } |
| 111 | */ |
| 112 | } |
| 113 | |
| 114 | #define SINGLE 0 /* index of single indirect block */ |
| 115 | #define DOUBLE 1 /* index of double indirect block */ |
| 116 | #define TRIPLE 2 /* index of triple indirect block */ |
| 117 | /* |
| 118 | * Truncate the inode oip to at most length size, freeing the |
| 119 | * disk blocks. |
| 120 | */ |
| 121 | int |
| 122 | ext2_truncate(struct vnode *vp, off_t length, int flags, struct ucred *cred) |
| 123 | { |
| 124 | struct vnode *ovp = vp; |
| 125 | daddr_t lastblock; |
| 126 | struct inode *oip; |
| 127 | daddr_t bn, lbn, lastiblock[NIADDR], indir_lbn[NIADDR]; |
| 128 | daddr_t oldblks[NDADDR + NIADDR], newblks[NDADDR + NIADDR]; |
| 129 | struct ext2_sb_info *fs; |
| 130 | struct buf *bp; |
| 131 | int offset, size, level; |
| 132 | long count, nblocks, blocksreleased = 0; |
| 133 | int i; |
| 134 | int aflags, error, allerror; |
| 135 | off_t osize; |
| 136 | /* |
| 137 | printf("ext2_truncate called %d to %d\n", VTOI(ovp)->i_number, length); |
| 138 | */ /* |
| 139 | * negative file sizes will totally break the code below and |
| 140 | * are not meaningful anyways. |
| 141 | */ |
| 142 | if (length < 0) |
| 143 | return EFBIG; |
| 144 | |
| 145 | oip = VTOI(ovp); |
| 146 | if (ovp->v_type == VLNK && |
| 147 | oip->i_size < ovp->v_mount->mnt_maxsymlinklen) { |
| 148 | #if DIAGNOSTIC |
| 149 | if (length != 0) |
| 150 | panic("ext2_truncate: partial truncate of symlink"); |
| 151 | #endif |
| 152 | bzero((char *)&oip->i_shortlink, (u_int)oip->i_size); |
| 153 | oip->i_size = 0; |
| 154 | oip->i_flag |= IN_CHANGE | IN_UPDATE; |
| 155 | return (EXT2_UPDATE(ovp, 1)); |
| 156 | } |
| 157 | if (oip->i_size == length) { |
| 158 | oip->i_flag |= IN_CHANGE | IN_UPDATE; |
| 159 | return (EXT2_UPDATE(ovp, 0)); |
| 160 | } |
| 161 | #if QUOTA |
| 162 | if ((error = ext2_getinoquota(oip)) != 0) |
| 163 | return (error); |
| 164 | #endif |
| 165 | fs = oip->i_e2fs; |
| 166 | osize = oip->i_size; |
| 167 | ext2_discard_prealloc(oip); |
| 168 | /* |
| 169 | * Lengthen the size of the file. We must ensure that the |
| 170 | * last byte of the file is allocated. Since the smallest |
| 171 | * value of oszie is 0, length will be at least 1. |
| 172 | */ |
| 173 | if (osize < length) { |
| 174 | offset = blkoff(fs, length - 1); |
| 175 | lbn = lblkno(fs, length - 1); |
| 176 | aflags = B_CLRBUF; |
| 177 | if (flags & IO_SYNC) |
| 178 | aflags |= B_SYNC; |
| 179 | vnode_pager_setsize(ovp, length); |
| 180 | if ((error = ext2_balloc(oip, lbn, offset + 1, cred, &bp, |
| 181 | aflags)) != 0) |
| 182 | return (error); |
| 183 | oip->i_size = length; |
| 184 | if (aflags & IO_SYNC) |
| 185 | bwrite(bp); |
| 186 | else |
| 187 | bawrite(bp); |
| 188 | oip->i_flag |= IN_CHANGE | IN_UPDATE; |
| 189 | return (EXT2_UPDATE(ovp, 1)); |
| 190 | } |
| 191 | /* |
| 192 | * Shorten the size of the file. If the file is not being |
| 193 | * truncated to a block boundry, the contents of the |
| 194 | * partial block following the end of the file must be |
| 195 | * zero'ed in case it ever become accessable again because |
| 196 | * of subsequent file growth. |
| 197 | */ |
| 198 | /* I don't understand the comment above */ |
| 199 | offset = blkoff(fs, length); |
| 200 | if (offset == 0) { |
| 201 | oip->i_size = length; |
| 202 | } else { |
| 203 | lbn = lblkno(fs, length); |
| 204 | aflags = B_CLRBUF; |
| 205 | if (flags & IO_SYNC) |
| 206 | aflags |= B_SYNC; |
| 207 | if ((error = ext2_balloc(oip, lbn, offset, cred, &bp, |
| 208 | aflags)) != 0) |
| 209 | return (error); |
| 210 | oip->i_size = length; |
| 211 | size = blksize(fs, oip, lbn); |
| 212 | bzero((char *)bp->b_data + offset, (u_int)(size - offset)); |
| 213 | allocbuf(bp, size); |
| 214 | if (aflags & IO_SYNC) |
| 215 | bwrite(bp); |
| 216 | else |
| 217 | bawrite(bp); |
| 218 | } |
| 219 | /* |
| 220 | * Calculate index into inode's block list of |
| 221 | * last direct and indirect blocks (if any) |
| 222 | * which we want to keep. Lastblock is -1 when |
| 223 | * the file is truncated to 0. |
| 224 | */ |
| 225 | lastblock = lblkno(fs, length + fs->s_blocksize - 1) - 1; |
| 226 | lastiblock[SINGLE] = lastblock - NDADDR; |
| 227 | lastiblock[DOUBLE] = lastiblock[SINGLE] - NINDIR(fs); |
| 228 | lastiblock[TRIPLE] = lastiblock[DOUBLE] - NINDIR(fs) * NINDIR(fs); |
| 229 | nblocks = btodb(fs->s_blocksize); |
| 230 | /* |
| 231 | * Update file and block pointers on disk before we start freeing |
| 232 | * blocks. If we crash before free'ing blocks below, the blocks |
| 233 | * will be returned to the free list. lastiblock values are also |
| 234 | * normalized to -1 for calls to ext2_indirtrunc below. |
| 235 | */ |
| 236 | bcopy((caddr_t)&oip->i_db[0], (caddr_t)oldblks, sizeof oldblks); |
| 237 | for (level = TRIPLE; level >= SINGLE; level--) |
| 238 | if (lastiblock[level] < 0) { |
| 239 | oip->i_ib[level] = 0; |
| 240 | lastiblock[level] = -1; |
| 241 | } |
| 242 | for (i = NDADDR - 1; i > lastblock; i--) |
| 243 | oip->i_db[i] = 0; |
| 244 | oip->i_flag |= IN_CHANGE | IN_UPDATE; |
| 245 | allerror = EXT2_UPDATE(ovp, 1); |
| 246 | |
| 247 | /* |
| 248 | * Having written the new inode to disk, save its new configuration |
| 249 | * and put back the old block pointers long enough to process them. |
| 250 | * Note that we save the new block configuration so we can check it |
| 251 | * when we are done. |
| 252 | */ |
| 253 | bcopy((caddr_t)&oip->i_db[0], (caddr_t)newblks, sizeof newblks); |
| 254 | bcopy((caddr_t)oldblks, (caddr_t)&oip->i_db[0], sizeof oldblks); |
| 255 | oip->i_size = osize; |
| 256 | error = vtruncbuf(ovp, length, (int)fs->s_blocksize); |
| 257 | if (error && (allerror == 0)) |
| 258 | allerror = error; |
| 259 | |
| 260 | /* |
| 261 | * Indirect blocks first. |
| 262 | */ |
| 263 | indir_lbn[SINGLE] = -NDADDR; |
| 264 | indir_lbn[DOUBLE] = indir_lbn[SINGLE] - NINDIR(fs) - 1; |
| 265 | indir_lbn[TRIPLE] = indir_lbn[DOUBLE] - NINDIR(fs) * NINDIR(fs) - 1; |
| 266 | for (level = TRIPLE; level >= SINGLE; level--) { |
| 267 | bn = oip->i_ib[level]; |
| 268 | if (bn != 0) { |
| 269 | error = ext2_indirtrunc(oip, indir_lbn[level], |
| 270 | fsbtodoff(fs, bn), lastiblock[level], level, &count); |
| 271 | if (error) |
| 272 | allerror = error; |
| 273 | blocksreleased += count; |
| 274 | if (lastiblock[level] < 0) { |
| 275 | oip->i_ib[level] = 0; |
| 276 | ext2_blkfree(oip, bn, fs->s_frag_size); |
| 277 | blocksreleased += nblocks; |
| 278 | } |
| 279 | } |
| 280 | if (lastiblock[level] >= 0) |
| 281 | goto done; |
| 282 | } |
| 283 | |
| 284 | /* |
| 285 | * All whole direct blocks or frags. |
| 286 | */ |
| 287 | for (i = NDADDR - 1; i > lastblock; i--) { |
| 288 | long bsize; |
| 289 | |
| 290 | bn = oip->i_db[i]; |
| 291 | if (bn == 0) |
| 292 | continue; |
| 293 | oip->i_db[i] = 0; |
| 294 | bsize = blksize(fs, oip, i); |
| 295 | ext2_blkfree(oip, bn, bsize); |
| 296 | blocksreleased += btodb(bsize); |
| 297 | } |
| 298 | if (lastblock < 0) |
| 299 | goto done; |
| 300 | |
| 301 | /* |
| 302 | * Finally, look for a change in size of the |
| 303 | * last direct block; release any frags. |
| 304 | */ |
| 305 | bn = oip->i_db[lastblock]; |
| 306 | if (bn != 0) { |
| 307 | long oldspace, newspace; |
| 308 | |
| 309 | /* |
| 310 | * Calculate amount of space we're giving |
| 311 | * back as old block size minus new block size. |
| 312 | */ |
| 313 | oldspace = blksize(fs, oip, lastblock); |
| 314 | oip->i_size = length; |
| 315 | newspace = blksize(fs, oip, lastblock); |
| 316 | if (newspace == 0) |
| 317 | panic("itrunc: newspace"); |
| 318 | if (oldspace - newspace > 0) { |
| 319 | /* |
| 320 | * Block number of space to be free'd is |
| 321 | * the old block # plus the number of frags |
| 322 | * required for the storage we're keeping. |
| 323 | */ |
| 324 | bn += numfrags(fs, newspace); |
| 325 | ext2_blkfree(oip, bn, oldspace - newspace); |
| 326 | blocksreleased += btodb(oldspace - newspace); |
| 327 | } |
| 328 | } |
| 329 | done: |
| 330 | #if DIAGNOSTIC |
| 331 | for (level = SINGLE; level <= TRIPLE; level++) |
| 332 | if (newblks[NDADDR + level] != oip->i_ib[level]) |
| 333 | panic("itrunc1"); |
| 334 | for (i = 0; i < NDADDR; i++) |
| 335 | if (newblks[i] != oip->i_db[i]) |
| 336 | panic("itrunc2"); |
| 337 | if (length == 0 && (!RB_EMPTY(&ovp->v_rbdirty_tree) || |
| 338 | !RB_EMPTY(&ovp->v_rbclean_tree))) |
| 339 | panic("itrunc3"); |
| 340 | #endif /* DIAGNOSTIC */ |
| 341 | /* |
| 342 | * Put back the real size. |
| 343 | */ |
| 344 | oip->i_size = length; |
| 345 | oip->i_blocks -= blocksreleased; |
| 346 | if (oip->i_blocks < 0) /* sanity */ |
| 347 | oip->i_blocks = 0; |
| 348 | oip->i_flag |= IN_CHANGE; |
| 349 | vnode_pager_setsize(ovp, length); |
| 350 | #if QUOTA |
| 351 | ext2_chkdq(oip, -blocksreleased, NOCRED, 0); |
| 352 | #endif |
| 353 | return (allerror); |
| 354 | } |
| 355 | |
| 356 | /* |
| 357 | * Release blocks associated with the inode ip and stored in the indirect |
| 358 | * block bn. Blocks are free'd in LIFO order up to (but not including) |
| 359 | * lastbn. If level is greater than SINGLE, the block is an indirect block |
| 360 | * and recursive calls to indirtrunc must be used to cleanse other indirect |
| 361 | * blocks. |
| 362 | * |
| 363 | * NB: triple indirect blocks are untested. |
| 364 | */ |
| 365 | |
| 366 | static int |
| 367 | ext2_indirtrunc(struct inode *ip, daddr_t lbn, off_t doffset, daddr_t lastbn, |
| 368 | int level, long *countp) |
| 369 | { |
| 370 | int i; |
| 371 | struct buf *bp; |
| 372 | struct ext2_sb_info *fs = ip->i_e2fs; |
| 373 | daddr_t *bap; |
| 374 | struct vnode *vp; |
| 375 | daddr_t *copy, nb, nlbn, last; |
| 376 | long blkcount, factor; |
| 377 | int nblocks, blocksreleased = 0; |
| 378 | int error = 0, allerror = 0; |
| 379 | |
| 380 | /* |
| 381 | * Calculate index in current block of last |
| 382 | * block to be kept. -1 indicates the entire |
| 383 | * block so we need not calculate the index. |
| 384 | */ |
| 385 | factor = 1; |
| 386 | for (i = SINGLE; i < level; i++) |
| 387 | factor *= NINDIR(fs); |
| 388 | last = lastbn; |
| 389 | if (lastbn > 0) |
| 390 | last /= factor; |
| 391 | nblocks = btodb(fs->s_blocksize); |
| 392 | /* |
| 393 | * Get buffer of block pointers, zero those entries corresponding |
| 394 | * to blocks to be free'd, and update on disk copy first. Since |
| 395 | * double(triple) indirect before single(double) indirect, calls |
| 396 | * to bmap on these blocks will fail. However, we already have |
| 397 | * the on disk address, so we have to set the bio_offset field |
| 398 | * explicitly instead of letting bread do everything for us. |
| 399 | */ |
| 400 | vp = ITOV(ip); |
| 401 | bp = getblk(vp, lblktodoff(fs, lbn), (int)fs->s_blocksize, 0, 0); |
| 402 | if ((bp->b_flags & B_CACHE) == 0) { |
| 403 | bp->b_flags &= ~(B_ERROR | B_INVAL); |
| 404 | bp->b_cmd = BUF_CMD_READ; |
| 405 | if (bp->b_bcount > bp->b_bufsize) |
| 406 | panic("ext2_indirtrunc: bad buffer size"); |
| 407 | bp->b_bio2.bio_offset = doffset; |
| 408 | vfs_busy_pages(bp->b_vp, bp); |
| 409 | vn_strategy(vp, &bp->b_bio1); |
| 410 | error = biowait(bp); |
| 411 | } |
| 412 | if (error) { |
| 413 | brelse(bp); |
| 414 | *countp = 0; |
| 415 | return (error); |
| 416 | } |
| 417 | |
| 418 | bap = (daddr_t *)bp->b_data; |
| 419 | MALLOC(copy, daddr_t *, fs->s_blocksize, M_TEMP, M_WAITOK); |
| 420 | bcopy((caddr_t)bap, (caddr_t)copy, (u_int)fs->s_blocksize); |
| 421 | bzero((caddr_t)&bap[last + 1], |
| 422 | (u_int)(NINDIR(fs) - (last + 1)) * sizeof (daddr_t)); |
| 423 | if (last == -1) |
| 424 | bp->b_flags |= B_INVAL; |
| 425 | error = bwrite(bp); |
| 426 | if (error) |
| 427 | allerror = error; |
| 428 | bap = copy; |
| 429 | |
| 430 | /* |
| 431 | * Recursively free totally unused blocks. |
| 432 | */ |
| 433 | for (i = NINDIR(fs) - 1, nlbn = lbn + 1 - i * factor; i > last; |
| 434 | i--, nlbn += factor) { |
| 435 | nb = bap[i]; |
| 436 | if (nb == 0) |
| 437 | continue; |
| 438 | if (level > SINGLE) { |
| 439 | if ((error = ext2_indirtrunc(ip, nlbn, |
| 440 | fsbtodoff(fs, nb), (daddr_t)-1, level - 1, &blkcount)) != 0) |
| 441 | allerror = error; |
| 442 | blocksreleased += blkcount; |
| 443 | } |
| 444 | ext2_blkfree(ip, nb, fs->s_blocksize); |
| 445 | blocksreleased += nblocks; |
| 446 | } |
| 447 | |
| 448 | /* |
| 449 | * Recursively free last partial block. |
| 450 | */ |
| 451 | if (level > SINGLE && lastbn >= 0) { |
| 452 | last = lastbn % factor; |
| 453 | nb = bap[i]; |
| 454 | if (nb != 0) { |
| 455 | error = ext2_indirtrunc(ip, nlbn, fsbtodoff(fs, nb), |
| 456 | last, level - 1, &blkcount); |
| 457 | if (error) |
| 458 | allerror = error; |
| 459 | blocksreleased += blkcount; |
| 460 | } |
| 461 | } |
| 462 | FREE(copy, M_TEMP); |
| 463 | *countp = blocksreleased; |
| 464 | return (allerror); |
| 465 | } |
| 466 | |
| 467 | /* |
| 468 | * Last reference to an inode. If necessary, write or delete it. |
| 469 | * |
| 470 | * ext2_inactive(struct vnode *a_vp) |
| 471 | */ |
| 472 | int |
| 473 | ext2_inactive(struct vop_inactive_args *ap) |
| 474 | { |
| 475 | struct vnode *vp = ap->a_vp; |
| 476 | struct inode *ip = VTOI(vp); |
| 477 | int mode, error = 0; |
| 478 | |
| 479 | ext2_discard_prealloc(ip); |
| 480 | if (prtactive && vp->v_usecount != 1) |
| 481 | vprint("ext2_inactive: pushing active", vp); |
| 482 | |
| 483 | /* |
| 484 | * Ignore inodes related to stale file handles. |
| 485 | */ |
| 486 | if (ip == NULL || ip->i_mode == 0) |
| 487 | goto out; |
| 488 | if (ip->i_nlink <= 0 && (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { |
| 489 | #ifdef QUOTA |
| 490 | if (!ext2_getinoquota(ip)) |
| 491 | (void)ext2_chkiq(ip, -1, NOCRED, FORCE); |
| 492 | #endif |
| 493 | error = EXT2_TRUNCATE(vp, (off_t)0, 0, NOCRED); |
| 494 | ip->i_rdev = 0; |
| 495 | mode = ip->i_mode; |
| 496 | ip->i_mode = 0; |
| 497 | ip->i_flag |= IN_CHANGE | IN_UPDATE; |
| 498 | EXT2_VFREE(vp, ip->i_number, mode); |
| 499 | } |
| 500 | if (ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE)) |
| 501 | EXT2_UPDATE(vp, 0); |
| 502 | out: |
| 503 | /* |
| 504 | * If we are done with the inode, reclaim it |
| 505 | * so that it can be reused immediately. |
| 506 | */ |
| 507 | if (ip == NULL || ip->i_mode == 0) |
| 508 | vrecycle(vp); |
| 509 | return (error); |
| 510 | } |
| 511 | |
| 512 | /* |
| 513 | * Reclaim an inode so that it can be used for other purposes. |
| 514 | * |
| 515 | * ext2_reclaim(struct vnode *a_vp) |
| 516 | */ |
| 517 | int |
| 518 | ext2_reclaim(struct vop_reclaim_args *ap) |
| 519 | { |
| 520 | struct inode *ip; |
| 521 | struct vnode *vp = ap->a_vp; |
| 522 | #ifdef QUOTA |
| 523 | int i; |
| 524 | #endif |
| 525 | |
| 526 | if (prtactive && vp->v_usecount != 1) |
| 527 | vprint("ext2_reclaim: pushing active", vp); |
| 528 | ip = VTOI(vp); |
| 529 | |
| 530 | /* |
| 531 | * Lazy updates. |
| 532 | */ |
| 533 | if (ip) { |
| 534 | if (ip->i_flag & IN_LAZYMOD) { |
| 535 | ip->i_flag |= IN_MODIFIED; |
| 536 | EXT2_UPDATE(vp, 0); |
| 537 | } |
| 538 | } |
| 539 | #ifdef INVARIANTS |
| 540 | if (ip && (ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_MODIFIED | IN_UPDATE))) { |
| 541 | printf("WARNING: INODE %ld flags %08x: modified inode being released!\n", (long)ip->i_number, (int)ip->i_flag); |
| 542 | ip->i_flag |= IN_MODIFIED; |
| 543 | EXT2_UPDATE(vp, 0); |
| 544 | } |
| 545 | #endif |
| 546 | /* |
| 547 | * Remove the inode from its hash chain and purge namecache |
| 548 | * data associated with the vnode. |
| 549 | */ |
| 550 | vp->v_data = NULL; |
| 551 | if (ip) { |
| 552 | ext2_ihashrem(ip); |
| 553 | if (ip->i_devvp) { |
| 554 | vrele(ip->i_devvp); |
| 555 | ip->i_devvp = 0; |
| 556 | } |
| 557 | #ifdef QUOTA |
| 558 | for (i = 0; i < MAXQUOTAS; i++) { |
| 559 | if (ip->i_dquot[i] != NODQUOT) { |
| 560 | ext2_dqrele(vp, ip->i_dquot[i]); |
| 561 | ip->i_dquot[i] = NODQUOT; |
| 562 | } |
| 563 | } |
| 564 | #endif |
| 565 | #ifdef UFS_DIRHASH |
| 566 | if (ip->i_dirhash != NULL) |
| 567 | ext2dirhash_free(ip); |
| 568 | #endif |
| 569 | free(ip, VFSTOEXT2(vp->v_mount)->um_malloctype); |
| 570 | } |
| 571 | return (0); |
| 572 | } |