Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1 | /* -*- mode: c; c-basic-offset: 8; -*- |
| 2 | * vim: noexpandtab sw=8 ts=8 sts=0: |
| 3 | * |
| 4 | * namei.c |
| 5 | * |
| 6 | * Create and rename file, directory, symlinks |
| 7 | * |
| 8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. |
| 9 | * |
| 10 | * Portions of this code from linux/fs/ext3/dir.c |
| 11 | * |
| 12 | * Copyright (C) 1992, 1993, 1994, 1995 |
| 13 | * Remy Card (card@masi.ibp.fr) |
| 14 | * Laboratoire MASI - Institut Blaise pascal |
| 15 | * Universite Pierre et Marie Curie (Paris VI) |
| 16 | * |
| 17 | * from |
| 18 | * |
| 19 | * linux/fs/minix/dir.c |
| 20 | * |
| 21 | * Copyright (C) 1991, 1992 Linux Torvalds |
| 22 | * |
| 23 | * This program is free software; you can redistribute it and/or |
| 24 | * modify it under the terms of the GNU General Public |
| 25 | * License as published by the Free Software Foundation; either |
| 26 | * version 2 of the License, or (at your option) any later version. |
| 27 | * |
| 28 | * This program is distributed in the hope that it will be useful, |
| 29 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 30 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 31 | * General Public License for more details. |
| 32 | * |
| 33 | * You should have received a copy of the GNU General Public |
| 34 | * License along with this program; if not, write to the |
| 35 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 36 | * Boston, MA 021110-1307, USA. |
| 37 | */ |
| 38 | |
| 39 | #include <linux/fs.h> |
| 40 | #include <linux/types.h> |
| 41 | #include <linux/slab.h> |
| 42 | #include <linux/highmem.h> |
| 43 | |
| 44 | #define MLOG_MASK_PREFIX ML_NAMEI |
| 45 | #include <cluster/masklog.h> |
| 46 | |
| 47 | #include "ocfs2.h" |
| 48 | |
| 49 | #include "alloc.h" |
| 50 | #include "dcache.h" |
| 51 | #include "dir.h" |
| 52 | #include "dlmglue.h" |
| 53 | #include "extent_map.h" |
| 54 | #include "file.h" |
| 55 | #include "inode.h" |
| 56 | #include "journal.h" |
| 57 | #include "namei.h" |
| 58 | #include "suballoc.h" |
Mark Fasheh | aa95887 | 2006-04-21 13:49:02 -0700 | [diff] [blame] | 59 | #include "super.h" |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 60 | #include "symlink.h" |
| 61 | #include "sysfile.h" |
| 62 | #include "uptodate.h" |
| 63 | #include "vote.h" |
| 64 | |
| 65 | #include "buffer_head_io.h" |
| 66 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 67 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
| 68 | struct inode *dir, |
| 69 | struct dentry *dentry, int mode, |
| 70 | dev_t dev, |
| 71 | struct buffer_head **new_fe_bh, |
| 72 | struct buffer_head *parent_fe_bh, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 73 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 74 | struct inode **ret_inode, |
| 75 | struct ocfs2_alloc_context *inode_ac); |
| 76 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 77 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 78 | struct inode **ret_orphan_dir, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 79 | struct inode *inode, |
| 80 | char *name, |
| 81 | struct buffer_head **de_bh); |
| 82 | |
| 83 | static int ocfs2_orphan_add(struct ocfs2_super *osb, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 84 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 85 | struct inode *inode, |
| 86 | struct ocfs2_dinode *fe, |
| 87 | char *name, |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 88 | struct buffer_head *de_bh, |
| 89 | struct inode *orphan_dir_inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 90 | |
| 91 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 92 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 93 | struct inode *inode, |
| 94 | const char *symname); |
| 95 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 96 | /* An orphan dir name is an 8 byte value, printed as a hex string */ |
| 97 | #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64))) |
| 98 | |
| 99 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, |
| 100 | struct nameidata *nd) |
| 101 | { |
| 102 | int status; |
| 103 | u64 blkno; |
| 104 | struct buffer_head *dirent_bh = NULL; |
| 105 | struct inode *inode = NULL; |
| 106 | struct dentry *ret; |
| 107 | struct ocfs2_dir_entry *dirent; |
| 108 | struct ocfs2_inode_info *oi; |
| 109 | |
| 110 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, |
| 111 | dentry->d_name.len, dentry->d_name.name); |
| 112 | |
| 113 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { |
| 114 | ret = ERR_PTR(-ENAMETOOLONG); |
| 115 | goto bail; |
| 116 | } |
| 117 | |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 118 | mlog(0, "find name %.*s in directory %llu\n", dentry->d_name.len, |
| 119 | dentry->d_name.name, (unsigned long long)OCFS2_I(dir)->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 120 | |
Mark Fasheh | 4bcec18 | 2006-10-09 16:02:40 -0700 | [diff] [blame] | 121 | status = ocfs2_meta_lock(dir, NULL, 0); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 122 | if (status < 0) { |
| 123 | if (status != -ENOENT) |
| 124 | mlog_errno(status); |
| 125 | ret = ERR_PTR(status); |
| 126 | goto bail; |
| 127 | } |
| 128 | |
| 129 | status = ocfs2_find_files_on_disk(dentry->d_name.name, |
| 130 | dentry->d_name.len, &blkno, |
| 131 | dir, &dirent_bh, &dirent); |
| 132 | if (status < 0) |
| 133 | goto bail_add; |
| 134 | |
Mark Fasheh | 24c19ef | 2006-09-22 17:28:19 -0700 | [diff] [blame] | 135 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 136 | if (IS_ERR(inode)) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 137 | ret = ERR_PTR(-EACCES); |
| 138 | goto bail_unlock; |
| 139 | } |
| 140 | |
| 141 | oi = OCFS2_I(inode); |
| 142 | /* Clear any orphaned state... If we were able to look up the |
| 143 | * inode from a directory, it certainly can't be orphaned. We |
| 144 | * might have the bad state from a node which intended to |
| 145 | * orphan this inode but crashed before it could commit the |
| 146 | * unlink. */ |
| 147 | spin_lock(&oi->ip_lock); |
| 148 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 149 | spin_unlock(&oi->ip_lock); |
| 150 | |
| 151 | bail_add: |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 152 | dentry->d_op = &ocfs2_dentry_ops; |
| 153 | ret = d_splice_alias(inode, dentry); |
| 154 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 155 | if (inode) { |
| 156 | /* |
| 157 | * If d_splice_alias() finds a DCACHE_DISCONNECTED |
| 158 | * dentry, it will d_move() it on top of ourse. The |
| 159 | * return value will indicate this however, so in |
| 160 | * those cases, we switch them around for the locking |
| 161 | * code. |
| 162 | * |
| 163 | * NOTE: This dentry already has ->d_op set from |
| 164 | * ocfs2_get_parent() and ocfs2_get_dentry() |
| 165 | */ |
| 166 | if (ret) |
| 167 | dentry = ret; |
| 168 | |
| 169 | status = ocfs2_dentry_attach_lock(dentry, inode, |
Mark Fasheh | 0027dd5 | 2006-09-21 16:51:28 -0700 | [diff] [blame] | 170 | OCFS2_I(dir)->ip_blkno); |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 171 | if (status) { |
| 172 | mlog_errno(status); |
| 173 | ret = ERR_PTR(status); |
| 174 | goto bail_unlock; |
| 175 | } |
| 176 | } |
| 177 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 178 | bail_unlock: |
| 179 | /* Don't drop the cluster lock until *after* the d_add -- |
| 180 | * unlink on another node will message us to remove that |
| 181 | * dentry under this lock so otherwise we can race this with |
| 182 | * the vote thread and have a stale dentry. */ |
| 183 | ocfs2_meta_unlock(dir, 0); |
| 184 | |
| 185 | bail: |
| 186 | if (dirent_bh) |
| 187 | brelse(dirent_bh); |
| 188 | |
| 189 | mlog_exit_ptr(ret); |
| 190 | |
| 191 | return ret; |
| 192 | } |
| 193 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 194 | static int ocfs2_mknod(struct inode *dir, |
| 195 | struct dentry *dentry, |
| 196 | int mode, |
| 197 | dev_t dev) |
| 198 | { |
| 199 | int status = 0; |
| 200 | struct buffer_head *parent_fe_bh = NULL; |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 201 | handle_t *handle = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 202 | struct ocfs2_super *osb; |
| 203 | struct ocfs2_dinode *dirfe; |
| 204 | struct buffer_head *new_fe_bh = NULL; |
| 205 | struct buffer_head *de_bh = NULL; |
| 206 | struct inode *inode = NULL; |
| 207 | struct ocfs2_alloc_context *inode_ac = NULL; |
| 208 | struct ocfs2_alloc_context *data_ac = NULL; |
| 209 | |
| 210 | mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode, |
| 211 | (unsigned long)dev, dentry->d_name.len, |
| 212 | dentry->d_name.name); |
| 213 | |
| 214 | /* get our super block */ |
| 215 | osb = OCFS2_SB(dir->i_sb); |
| 216 | |
Mark Fasheh | 4bcec18 | 2006-10-09 16:02:40 -0700 | [diff] [blame] | 217 | status = ocfs2_meta_lock(dir, &parent_fe_bh, 1); |
Mark Fasheh | e3a8213 | 2006-10-05 16:04:17 -0700 | [diff] [blame] | 218 | if (status < 0) { |
| 219 | if (status != -ENOENT) |
| 220 | mlog_errno(status); |
| 221 | return status; |
| 222 | } |
| 223 | |
Mark Fasheh | a663e30 | 2006-08-09 11:45:07 -0700 | [diff] [blame] | 224 | if (S_ISDIR(mode) && (dir->i_nlink >= OCFS2_LINK_MAX)) { |
| 225 | status = -EMLINK; |
| 226 | goto leave; |
| 227 | } |
| 228 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 229 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
| 230 | if (!dirfe->i_links_count) { |
| 231 | /* can't make a file in a deleted directory. */ |
| 232 | status = -ENOENT; |
| 233 | goto leave; |
| 234 | } |
| 235 | |
| 236 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
| 237 | dentry->d_name.len); |
| 238 | if (status) |
| 239 | goto leave; |
| 240 | |
| 241 | /* get a spot inside the dir. */ |
| 242 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, |
| 243 | dentry->d_name.name, |
| 244 | dentry->d_name.len, &de_bh); |
| 245 | if (status < 0) { |
| 246 | mlog_errno(status); |
| 247 | goto leave; |
| 248 | } |
| 249 | |
| 250 | /* reserve an inode spot */ |
Mark Fasheh | da5cbf2 | 2006-10-06 18:34:35 -0700 | [diff] [blame] | 251 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 252 | if (status < 0) { |
| 253 | if (status != -ENOSPC) |
| 254 | mlog_errno(status); |
| 255 | goto leave; |
| 256 | } |
| 257 | |
| 258 | /* are we making a directory? If so, reserve a cluster for his |
| 259 | * 1st extent. */ |
| 260 | if (S_ISDIR(mode)) { |
Mark Fasheh | da5cbf2 | 2006-10-06 18:34:35 -0700 | [diff] [blame] | 261 | status = ocfs2_reserve_clusters(osb, 1, &data_ac); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 262 | if (status < 0) { |
| 263 | if (status != -ENOSPC) |
| 264 | mlog_errno(status); |
| 265 | goto leave; |
| 266 | } |
| 267 | } |
| 268 | |
Mark Fasheh | 65eff9c | 2006-10-09 17:26:22 -0700 | [diff] [blame] | 269 | handle = ocfs2_start_trans(osb, OCFS2_MKNOD_CREDITS); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 270 | if (IS_ERR(handle)) { |
| 271 | status = PTR_ERR(handle); |
| 272 | handle = NULL; |
| 273 | mlog_errno(status); |
| 274 | goto leave; |
| 275 | } |
| 276 | |
| 277 | /* do the real work now. */ |
| 278 | status = ocfs2_mknod_locked(osb, dir, dentry, mode, dev, |
| 279 | &new_fe_bh, parent_fe_bh, handle, |
| 280 | &inode, inode_ac); |
| 281 | if (status < 0) { |
| 282 | mlog_errno(status); |
| 283 | goto leave; |
| 284 | } |
| 285 | |
| 286 | if (S_ISDIR(mode)) { |
| 287 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, |
| 288 | new_fe_bh, data_ac); |
| 289 | if (status < 0) { |
| 290 | mlog_errno(status); |
| 291 | goto leave; |
| 292 | } |
| 293 | |
| 294 | status = ocfs2_journal_access(handle, dir, parent_fe_bh, |
| 295 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 296 | if (status < 0) { |
| 297 | mlog_errno(status); |
| 298 | goto leave; |
| 299 | } |
| 300 | le16_add_cpu(&dirfe->i_links_count, 1); |
| 301 | status = ocfs2_journal_dirty(handle, parent_fe_bh); |
| 302 | if (status < 0) { |
| 303 | mlog_errno(status); |
| 304 | goto leave; |
| 305 | } |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 306 | inc_nlink(dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 307 | } |
| 308 | |
| 309 | status = ocfs2_add_entry(handle, dentry, inode, |
| 310 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, |
| 311 | de_bh); |
| 312 | if (status < 0) { |
| 313 | mlog_errno(status); |
| 314 | goto leave; |
| 315 | } |
| 316 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 317 | status = ocfs2_dentry_attach_lock(dentry, inode, |
Mark Fasheh | 0027dd5 | 2006-09-21 16:51:28 -0700 | [diff] [blame] | 318 | OCFS2_I(dir)->ip_blkno); |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 319 | if (status) { |
| 320 | mlog_errno(status); |
| 321 | goto leave; |
| 322 | } |
| 323 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 324 | insert_inode_hash(inode); |
| 325 | dentry->d_op = &ocfs2_dentry_ops; |
| 326 | d_instantiate(dentry, inode); |
| 327 | status = 0; |
| 328 | leave: |
| 329 | if (handle) |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 330 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 331 | |
Mark Fasheh | e3a8213 | 2006-10-05 16:04:17 -0700 | [diff] [blame] | 332 | ocfs2_meta_unlock(dir, 1); |
| 333 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 334 | if (status == -ENOSPC) |
| 335 | mlog(0, "Disk is full\n"); |
| 336 | |
| 337 | if (new_fe_bh) |
| 338 | brelse(new_fe_bh); |
| 339 | |
| 340 | if (de_bh) |
| 341 | brelse(de_bh); |
| 342 | |
| 343 | if (parent_fe_bh) |
| 344 | brelse(parent_fe_bh); |
| 345 | |
| 346 | if ((status < 0) && inode) |
| 347 | iput(inode); |
| 348 | |
| 349 | if (inode_ac) |
| 350 | ocfs2_free_alloc_context(inode_ac); |
| 351 | |
| 352 | if (data_ac) |
| 353 | ocfs2_free_alloc_context(data_ac); |
| 354 | |
| 355 | mlog_exit(status); |
| 356 | |
| 357 | return status; |
| 358 | } |
| 359 | |
| 360 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
| 361 | struct inode *dir, |
| 362 | struct dentry *dentry, int mode, |
| 363 | dev_t dev, |
| 364 | struct buffer_head **new_fe_bh, |
| 365 | struct buffer_head *parent_fe_bh, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 366 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 367 | struct inode **ret_inode, |
| 368 | struct ocfs2_alloc_context *inode_ac) |
| 369 | { |
| 370 | int status = 0; |
| 371 | struct ocfs2_dinode *fe = NULL; |
| 372 | struct ocfs2_extent_list *fel; |
| 373 | u64 fe_blkno = 0; |
| 374 | u16 suballoc_bit; |
| 375 | struct inode *inode = NULL; |
| 376 | |
| 377 | mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode, |
| 378 | (unsigned long)dev, dentry->d_name.len, |
| 379 | dentry->d_name.name); |
| 380 | |
| 381 | *new_fe_bh = NULL; |
| 382 | *ret_inode = NULL; |
| 383 | |
| 384 | status = ocfs2_claim_new_inode(osb, handle, inode_ac, &suballoc_bit, |
| 385 | &fe_blkno); |
| 386 | if (status < 0) { |
| 387 | mlog_errno(status); |
| 388 | goto leave; |
| 389 | } |
| 390 | |
| 391 | inode = new_inode(dir->i_sb); |
| 392 | if (IS_ERR(inode)) { |
| 393 | status = PTR_ERR(inode); |
| 394 | mlog(ML_ERROR, "new_inode failed!\n"); |
| 395 | goto leave; |
| 396 | } |
| 397 | |
| 398 | /* populate as many fields early on as possible - many of |
| 399 | * these are used by the support functions here and in |
| 400 | * callers. */ |
| 401 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); |
| 402 | OCFS2_I(inode)->ip_blkno = fe_blkno; |
| 403 | if (S_ISDIR(mode)) |
| 404 | inode->i_nlink = 2; |
| 405 | else |
| 406 | inode->i_nlink = 1; |
| 407 | inode->i_mode = mode; |
| 408 | spin_lock(&osb->osb_lock); |
| 409 | inode->i_generation = osb->s_next_generation++; |
| 410 | spin_unlock(&osb->osb_lock); |
| 411 | |
| 412 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); |
| 413 | if (!*new_fe_bh) { |
| 414 | status = -EIO; |
| 415 | mlog_errno(status); |
| 416 | goto leave; |
| 417 | } |
| 418 | ocfs2_set_new_buffer_uptodate(inode, *new_fe_bh); |
| 419 | |
| 420 | status = ocfs2_journal_access(handle, inode, *new_fe_bh, |
| 421 | OCFS2_JOURNAL_ACCESS_CREATE); |
| 422 | if (status < 0) { |
| 423 | mlog_errno(status); |
| 424 | goto leave; |
| 425 | } |
| 426 | |
| 427 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; |
| 428 | memset(fe, 0, osb->sb->s_blocksize); |
| 429 | |
| 430 | fe->i_generation = cpu_to_le32(inode->i_generation); |
| 431 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); |
| 432 | fe->i_blkno = cpu_to_le64(fe_blkno); |
| 433 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
| 434 | fe->i_suballoc_slot = cpu_to_le16(osb->slot_num); |
| 435 | fe->i_uid = cpu_to_le32(current->fsuid); |
| 436 | if (dir->i_mode & S_ISGID) { |
| 437 | fe->i_gid = cpu_to_le32(dir->i_gid); |
| 438 | if (S_ISDIR(mode)) |
| 439 | mode |= S_ISGID; |
| 440 | } else |
| 441 | fe->i_gid = cpu_to_le32(current->fsgid); |
| 442 | fe->i_mode = cpu_to_le16(mode); |
| 443 | if (S_ISCHR(mode) || S_ISBLK(mode)) |
| 444 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
| 445 | |
| 446 | fe->i_links_count = cpu_to_le16(inode->i_nlink); |
| 447 | |
| 448 | fe->i_last_eb_blk = 0; |
| 449 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); |
| 450 | le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL); |
| 451 | fe->i_atime = fe->i_ctime = fe->i_mtime = |
| 452 | cpu_to_le64(CURRENT_TIME.tv_sec); |
| 453 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = |
| 454 | cpu_to_le32(CURRENT_TIME.tv_nsec); |
| 455 | fe->i_dtime = 0; |
| 456 | |
| 457 | fel = &fe->id2.i_list; |
| 458 | fel->l_tree_depth = 0; |
| 459 | fel->l_next_free_rec = 0; |
| 460 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); |
| 461 | |
| 462 | status = ocfs2_journal_dirty(handle, *new_fe_bh); |
| 463 | if (status < 0) { |
| 464 | mlog_errno(status); |
| 465 | goto leave; |
| 466 | } |
| 467 | |
| 468 | if (ocfs2_populate_inode(inode, fe, 1) < 0) { |
| 469 | mlog(ML_ERROR, "populate inode failed! bh->b_blocknr=%llu, " |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 470 | "i_blkno=%llu, i_ino=%lu\n", |
Mark Fasheh | 1ca1a11 | 2007-04-27 16:01:25 -0700 | [diff] [blame] | 471 | (unsigned long long)(*new_fe_bh)->b_blocknr, |
| 472 | (unsigned long long)le64_to_cpu(fe->i_blkno), |
| 473 | inode->i_ino); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 474 | BUG(); |
| 475 | } |
| 476 | |
| 477 | ocfs2_inode_set_new(osb, inode); |
Sunil Mushran | c271c5c | 2006-12-05 17:56:35 -0800 | [diff] [blame] | 478 | if (!ocfs2_mount_local(osb)) { |
| 479 | status = ocfs2_create_new_inode_locks(inode); |
| 480 | if (status < 0) |
| 481 | mlog_errno(status); |
| 482 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 483 | |
| 484 | status = 0; /* error in ocfs2_create_new_inode_locks is not |
| 485 | * critical */ |
| 486 | |
| 487 | *ret_inode = inode; |
| 488 | leave: |
| 489 | if (status < 0) { |
| 490 | if (*new_fe_bh) { |
| 491 | brelse(*new_fe_bh); |
| 492 | *new_fe_bh = NULL; |
| 493 | } |
| 494 | if (inode) |
| 495 | iput(inode); |
| 496 | } |
| 497 | |
| 498 | mlog_exit(status); |
| 499 | return status; |
| 500 | } |
| 501 | |
| 502 | static int ocfs2_mkdir(struct inode *dir, |
| 503 | struct dentry *dentry, |
| 504 | int mode) |
| 505 | { |
| 506 | int ret; |
| 507 | |
| 508 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, |
| 509 | dentry->d_name.len, dentry->d_name.name); |
| 510 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); |
| 511 | mlog_exit(ret); |
| 512 | |
| 513 | return ret; |
| 514 | } |
| 515 | |
| 516 | static int ocfs2_create(struct inode *dir, |
| 517 | struct dentry *dentry, |
| 518 | int mode, |
| 519 | struct nameidata *nd) |
| 520 | { |
| 521 | int ret; |
| 522 | |
| 523 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, |
| 524 | dentry->d_name.len, dentry->d_name.name); |
| 525 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); |
| 526 | mlog_exit(ret); |
| 527 | |
| 528 | return ret; |
| 529 | } |
| 530 | |
| 531 | static int ocfs2_link(struct dentry *old_dentry, |
| 532 | struct inode *dir, |
| 533 | struct dentry *dentry) |
| 534 | { |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 535 | handle_t *handle; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 536 | struct inode *inode = old_dentry->d_inode; |
| 537 | int err; |
| 538 | struct buffer_head *fe_bh = NULL; |
| 539 | struct buffer_head *parent_fe_bh = NULL; |
| 540 | struct buffer_head *de_bh = NULL; |
| 541 | struct ocfs2_dinode *fe = NULL; |
| 542 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
| 543 | |
| 544 | mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino, |
| 545 | old_dentry->d_name.len, old_dentry->d_name.name, |
| 546 | dentry->d_name.len, dentry->d_name.name); |
| 547 | |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 548 | if (S_ISDIR(inode->i_mode)) |
| 549 | return -EPERM; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 550 | |
Mark Fasheh | 4bcec18 | 2006-10-09 16:02:40 -0700 | [diff] [blame] | 551 | err = ocfs2_meta_lock(dir, &parent_fe_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 552 | if (err < 0) { |
| 553 | if (err != -ENOENT) |
| 554 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 555 | return err; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 556 | } |
| 557 | |
Tiger Yang | 0f62de2 | 2006-08-31 20:39:47 -0700 | [diff] [blame] | 558 | if (!dir->i_nlink) { |
| 559 | err = -ENOENT; |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 560 | goto out; |
Tiger Yang | 0f62de2 | 2006-08-31 20:39:47 -0700 | [diff] [blame] | 561 | } |
| 562 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 563 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
| 564 | dentry->d_name.len); |
| 565 | if (err) |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 566 | goto out; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 567 | |
| 568 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, |
| 569 | dentry->d_name.name, |
| 570 | dentry->d_name.len, &de_bh); |
| 571 | if (err < 0) { |
| 572 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 573 | goto out; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 574 | } |
| 575 | |
Mark Fasheh | 4bcec18 | 2006-10-09 16:02:40 -0700 | [diff] [blame] | 576 | err = ocfs2_meta_lock(inode, &fe_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 577 | if (err < 0) { |
| 578 | if (err != -ENOENT) |
| 579 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 580 | goto out; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 581 | } |
| 582 | |
| 583 | fe = (struct ocfs2_dinode *) fe_bh->b_data; |
| 584 | if (le16_to_cpu(fe->i_links_count) >= OCFS2_LINK_MAX) { |
| 585 | err = -EMLINK; |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 586 | goto out_unlock_inode; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 587 | } |
| 588 | |
Mark Fasheh | 65eff9c | 2006-10-09 17:26:22 -0700 | [diff] [blame] | 589 | handle = ocfs2_start_trans(osb, OCFS2_LINK_CREDITS); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 590 | if (IS_ERR(handle)) { |
| 591 | err = PTR_ERR(handle); |
| 592 | handle = NULL; |
| 593 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 594 | goto out_unlock_inode; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 595 | } |
| 596 | |
| 597 | err = ocfs2_journal_access(handle, inode, fe_bh, |
| 598 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 599 | if (err < 0) { |
| 600 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 601 | goto out_commit; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 602 | } |
| 603 | |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 604 | inc_nlink(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 605 | inode->i_ctime = CURRENT_TIME; |
| 606 | fe->i_links_count = cpu_to_le16(inode->i_nlink); |
| 607 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
| 608 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); |
| 609 | |
| 610 | err = ocfs2_journal_dirty(handle, fe_bh); |
| 611 | if (err < 0) { |
| 612 | le16_add_cpu(&fe->i_links_count, -1); |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 613 | drop_nlink(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 614 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 615 | goto out_commit; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 616 | } |
| 617 | |
| 618 | err = ocfs2_add_entry(handle, dentry, inode, |
| 619 | OCFS2_I(inode)->ip_blkno, |
| 620 | parent_fe_bh, de_bh); |
| 621 | if (err) { |
| 622 | le16_add_cpu(&fe->i_links_count, -1); |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 623 | drop_nlink(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 624 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 625 | goto out_commit; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 626 | } |
| 627 | |
Mark Fasheh | 0027dd5 | 2006-09-21 16:51:28 -0700 | [diff] [blame] | 628 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 629 | if (err) { |
| 630 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 631 | goto out_commit; |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 632 | } |
| 633 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 634 | atomic_inc(&inode->i_count); |
| 635 | dentry->d_op = &ocfs2_dentry_ops; |
| 636 | d_instantiate(dentry, inode); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 637 | |
| 638 | out_commit: |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 639 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 640 | out_unlock_inode: |
| 641 | ocfs2_meta_unlock(inode, 1); |
| 642 | |
| 643 | out: |
| 644 | ocfs2_meta_unlock(dir, 1); |
| 645 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 646 | if (de_bh) |
| 647 | brelse(de_bh); |
| 648 | if (fe_bh) |
| 649 | brelse(fe_bh); |
| 650 | if (parent_fe_bh) |
| 651 | brelse(parent_fe_bh); |
| 652 | |
| 653 | mlog_exit(err); |
| 654 | |
| 655 | return err; |
| 656 | } |
| 657 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 658 | /* |
| 659 | * Takes and drops an exclusive lock on the given dentry. This will |
| 660 | * force other nodes to drop it. |
| 661 | */ |
| 662 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) |
| 663 | { |
| 664 | int ret; |
| 665 | |
| 666 | ret = ocfs2_dentry_lock(dentry, 1); |
| 667 | if (ret) |
| 668 | mlog_errno(ret); |
| 669 | else |
| 670 | ocfs2_dentry_unlock(dentry, 1); |
| 671 | |
| 672 | return ret; |
| 673 | } |
| 674 | |
Mark Fasheh | 17ff785 | 2006-09-30 23:29:05 -0700 | [diff] [blame] | 675 | static inline int inode_is_unlinkable(struct inode *inode) |
| 676 | { |
| 677 | if (S_ISDIR(inode->i_mode)) { |
| 678 | if (inode->i_nlink == 2) |
| 679 | return 1; |
| 680 | return 0; |
| 681 | } |
| 682 | |
| 683 | if (inode->i_nlink == 1) |
| 684 | return 1; |
| 685 | return 0; |
| 686 | } |
| 687 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 688 | static int ocfs2_unlink(struct inode *dir, |
| 689 | struct dentry *dentry) |
| 690 | { |
| 691 | int status; |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 692 | int child_locked = 0; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 693 | struct inode *inode = dentry->d_inode; |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 694 | struct inode *orphan_dir = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 695 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
| 696 | u64 blkno; |
| 697 | struct ocfs2_dinode *fe = NULL; |
| 698 | struct buffer_head *fe_bh = NULL; |
| 699 | struct buffer_head *parent_node_bh = NULL; |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 700 | handle_t *handle = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 701 | struct ocfs2_dir_entry *dirent = NULL; |
| 702 | struct buffer_head *dirent_bh = NULL; |
| 703 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
| 704 | struct buffer_head *orphan_entry_bh = NULL; |
| 705 | |
| 706 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, |
| 707 | dentry->d_name.len, dentry->d_name.name); |
| 708 | |
| 709 | BUG_ON(dentry->d_parent->d_inode != dir); |
| 710 | |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 711 | mlog(0, "ino = %llu\n", (unsigned long long)OCFS2_I(inode)->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 712 | |
| 713 | if (inode == osb->root_inode) { |
| 714 | mlog(0, "Cannot delete the root directory\n"); |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 715 | return -EPERM; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 716 | } |
| 717 | |
Mark Fasheh | 4bcec18 | 2006-10-09 16:02:40 -0700 | [diff] [blame] | 718 | status = ocfs2_meta_lock(dir, &parent_node_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 719 | if (status < 0) { |
| 720 | if (status != -ENOENT) |
| 721 | mlog_errno(status); |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 722 | return status; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 723 | } |
| 724 | |
| 725 | status = ocfs2_find_files_on_disk(dentry->d_name.name, |
| 726 | dentry->d_name.len, &blkno, |
| 727 | dir, &dirent_bh, &dirent); |
| 728 | if (status < 0) { |
| 729 | if (status != -ENOENT) |
| 730 | mlog_errno(status); |
| 731 | goto leave; |
| 732 | } |
| 733 | |
| 734 | if (OCFS2_I(inode)->ip_blkno != blkno) { |
| 735 | status = -ENOENT; |
| 736 | |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 737 | mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n", |
| 738 | (unsigned long long)OCFS2_I(inode)->ip_blkno, |
| 739 | (unsigned long long)blkno, OCFS2_I(inode)->ip_flags); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 740 | goto leave; |
| 741 | } |
| 742 | |
Mark Fasheh | 4bcec18 | 2006-10-09 16:02:40 -0700 | [diff] [blame] | 743 | status = ocfs2_meta_lock(inode, &fe_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 744 | if (status < 0) { |
| 745 | if (status != -ENOENT) |
| 746 | mlog_errno(status); |
| 747 | goto leave; |
| 748 | } |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 749 | child_locked = 1; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 750 | |
| 751 | if (S_ISDIR(inode->i_mode)) { |
| 752 | if (!ocfs2_empty_dir(inode)) { |
| 753 | status = -ENOTEMPTY; |
| 754 | goto leave; |
| 755 | } else if (inode->i_nlink != 2) { |
| 756 | status = -ENOTEMPTY; |
| 757 | goto leave; |
| 758 | } |
| 759 | } |
| 760 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 761 | status = ocfs2_remote_dentry_delete(dentry); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 762 | if (status < 0) { |
| 763 | /* This vote should succeed under all normal |
| 764 | * circumstances. */ |
| 765 | mlog_errno(status); |
| 766 | goto leave; |
| 767 | } |
| 768 | |
Mark Fasheh | 17ff785 | 2006-09-30 23:29:05 -0700 | [diff] [blame] | 769 | if (inode_is_unlinkable(inode)) { |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 770 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, inode, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 771 | orphan_name, |
| 772 | &orphan_entry_bh); |
| 773 | if (status < 0) { |
| 774 | mlog_errno(status); |
| 775 | goto leave; |
| 776 | } |
| 777 | } |
| 778 | |
Mark Fasheh | 65eff9c | 2006-10-09 17:26:22 -0700 | [diff] [blame] | 779 | handle = ocfs2_start_trans(osb, OCFS2_UNLINK_CREDITS); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 780 | if (IS_ERR(handle)) { |
| 781 | status = PTR_ERR(handle); |
| 782 | handle = NULL; |
| 783 | mlog_errno(status); |
| 784 | goto leave; |
| 785 | } |
| 786 | |
| 787 | status = ocfs2_journal_access(handle, inode, fe_bh, |
| 788 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 789 | if (status < 0) { |
| 790 | mlog_errno(status); |
| 791 | goto leave; |
| 792 | } |
| 793 | |
| 794 | fe = (struct ocfs2_dinode *) fe_bh->b_data; |
| 795 | |
Mark Fasheh | 17ff785 | 2006-09-30 23:29:05 -0700 | [diff] [blame] | 796 | if (inode_is_unlinkable(inode)) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 797 | status = ocfs2_orphan_add(osb, handle, inode, fe, orphan_name, |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 798 | orphan_entry_bh, orphan_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 799 | if (status < 0) { |
| 800 | mlog_errno(status); |
| 801 | goto leave; |
| 802 | } |
| 803 | } |
| 804 | |
| 805 | /* delete the name from the parent dir */ |
| 806 | status = ocfs2_delete_entry(handle, dir, dirent, dirent_bh); |
| 807 | if (status < 0) { |
| 808 | mlog_errno(status); |
| 809 | goto leave; |
| 810 | } |
| 811 | |
Mark Fasheh | 17ff785 | 2006-09-30 23:29:05 -0700 | [diff] [blame] | 812 | if (S_ISDIR(inode->i_mode)) |
| 813 | drop_nlink(inode); |
| 814 | drop_nlink(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 815 | fe->i_links_count = cpu_to_le16(inode->i_nlink); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 816 | |
| 817 | status = ocfs2_journal_dirty(handle, fe_bh); |
| 818 | if (status < 0) { |
| 819 | mlog_errno(status); |
| 820 | goto leave; |
| 821 | } |
| 822 | |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 823 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
| 824 | if (S_ISDIR(inode->i_mode)) |
Mark Fasheh | 17ff785 | 2006-09-30 23:29:05 -0700 | [diff] [blame] | 825 | drop_nlink(dir); |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 826 | |
| 827 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); |
| 828 | if (status < 0) { |
| 829 | mlog_errno(status); |
| 830 | if (S_ISDIR(inode->i_mode)) |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 831 | inc_nlink(dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 832 | } |
| 833 | |
| 834 | leave: |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 835 | if (handle) |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 836 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 837 | |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 838 | if (child_locked) |
| 839 | ocfs2_meta_unlock(inode, 1); |
| 840 | |
| 841 | ocfs2_meta_unlock(dir, 1); |
| 842 | |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 843 | if (orphan_dir) { |
| 844 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ |
| 845 | ocfs2_meta_unlock(orphan_dir, 1); |
| 846 | mutex_unlock(&orphan_dir->i_mutex); |
| 847 | iput(orphan_dir); |
| 848 | } |
| 849 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 850 | if (fe_bh) |
| 851 | brelse(fe_bh); |
| 852 | |
| 853 | if (dirent_bh) |
| 854 | brelse(dirent_bh); |
| 855 | |
| 856 | if (parent_node_bh) |
| 857 | brelse(parent_node_bh); |
| 858 | |
| 859 | if (orphan_entry_bh) |
| 860 | brelse(orphan_entry_bh); |
| 861 | |
| 862 | mlog_exit(status); |
| 863 | |
| 864 | return status; |
| 865 | } |
| 866 | |
| 867 | /* |
| 868 | * The only place this should be used is rename! |
| 869 | * if they have the same id, then the 1st one is the only one locked. |
| 870 | */ |
| 871 | static int ocfs2_double_lock(struct ocfs2_super *osb, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 872 | struct buffer_head **bh1, |
| 873 | struct inode *inode1, |
| 874 | struct buffer_head **bh2, |
| 875 | struct inode *inode2) |
| 876 | { |
| 877 | int status; |
| 878 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); |
| 879 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); |
| 880 | struct buffer_head **tmpbh; |
| 881 | struct inode *tmpinode; |
| 882 | |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 883 | mlog_entry("(inode1 = %llu, inode2 = %llu)\n", |
| 884 | (unsigned long long)oi1->ip_blkno, |
| 885 | (unsigned long long)oi2->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 886 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 887 | if (*bh1) |
| 888 | *bh1 = NULL; |
| 889 | if (*bh2) |
| 890 | *bh2 = NULL; |
| 891 | |
| 892 | /* we always want to lock the one with the lower lockid first. */ |
| 893 | if (oi1->ip_blkno != oi2->ip_blkno) { |
| 894 | if (oi1->ip_blkno < oi2->ip_blkno) { |
| 895 | /* switch id1 and id2 around */ |
| 896 | mlog(0, "switching them around...\n"); |
| 897 | tmpbh = bh2; |
| 898 | bh2 = bh1; |
| 899 | bh1 = tmpbh; |
| 900 | |
| 901 | tmpinode = inode2; |
| 902 | inode2 = inode1; |
| 903 | inode1 = tmpinode; |
| 904 | } |
| 905 | /* lock id2 */ |
Mark Fasheh | 4bcec18 | 2006-10-09 16:02:40 -0700 | [diff] [blame] | 906 | status = ocfs2_meta_lock(inode2, bh2, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 907 | if (status < 0) { |
| 908 | if (status != -ENOENT) |
| 909 | mlog_errno(status); |
| 910 | goto bail; |
| 911 | } |
| 912 | } |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 913 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 914 | /* lock id1 */ |
Mark Fasheh | 4bcec18 | 2006-10-09 16:02:40 -0700 | [diff] [blame] | 915 | status = ocfs2_meta_lock(inode1, bh1, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 916 | if (status < 0) { |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 917 | /* |
| 918 | * An error return must mean that no cluster locks |
| 919 | * were held on function exit. |
| 920 | */ |
| 921 | if (oi1->ip_blkno != oi2->ip_blkno) |
| 922 | ocfs2_meta_unlock(inode2, 1); |
| 923 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 924 | if (status != -ENOENT) |
| 925 | mlog_errno(status); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 926 | } |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 927 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 928 | bail: |
| 929 | mlog_exit(status); |
| 930 | return status; |
| 931 | } |
| 932 | |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 933 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
| 934 | { |
| 935 | ocfs2_meta_unlock(inode1, 1); |
| 936 | |
| 937 | if (inode1 != inode2) |
| 938 | ocfs2_meta_unlock(inode2, 1); |
| 939 | } |
| 940 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 941 | #define PARENT_INO(buffer) \ |
| 942 | ((struct ocfs2_dir_entry *) \ |
| 943 | ((char *)buffer + \ |
| 944 | le16_to_cpu(((struct ocfs2_dir_entry *)buffer)->rec_len)))->inode |
| 945 | |
| 946 | static int ocfs2_rename(struct inode *old_dir, |
| 947 | struct dentry *old_dentry, |
| 948 | struct inode *new_dir, |
| 949 | struct dentry *new_dentry) |
| 950 | { |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 951 | int status = 0, rename_lock = 0, parents_locked = 0; |
| 952 | int old_child_locked = 0, new_child_locked = 0; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 953 | struct inode *old_inode = old_dentry->d_inode; |
| 954 | struct inode *new_inode = new_dentry->d_inode; |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 955 | struct inode *orphan_dir = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 956 | struct ocfs2_dinode *newfe = NULL; |
| 957 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
| 958 | struct buffer_head *orphan_entry_bh = NULL; |
| 959 | struct buffer_head *newfe_bh = NULL; |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 960 | struct buffer_head *old_inode_bh = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 961 | struct buffer_head *insert_entry_bh = NULL; |
| 962 | struct ocfs2_super *osb = NULL; |
| 963 | u64 newfe_blkno; |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 964 | handle_t *handle = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 965 | struct buffer_head *old_dir_bh = NULL; |
| 966 | struct buffer_head *new_dir_bh = NULL; |
| 967 | struct ocfs2_dir_entry *old_de = NULL, *new_de = NULL; // dirent for old_dentry |
| 968 | // and new_dentry |
| 969 | struct buffer_head *new_de_bh = NULL, *old_de_bh = NULL; // bhs for above |
| 970 | struct buffer_head *old_inode_de_bh = NULL; // if old_dentry is a dir, |
| 971 | // this is the 1st dirent bh |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 972 | nlink_t old_dir_nlink = old_dir->i_nlink; |
Sunil Mushran | 480214d | 2007-08-06 15:11:56 -0700 | [diff] [blame] | 973 | struct ocfs2_dinode *old_di; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 974 | |
| 975 | /* At some point it might be nice to break this function up a |
| 976 | * bit. */ |
| 977 | |
| 978 | mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n", |
| 979 | old_dir, old_dentry, new_dir, new_dentry, |
| 980 | old_dentry->d_name.len, old_dentry->d_name.name, |
| 981 | new_dentry->d_name.len, new_dentry->d_name.name); |
| 982 | |
| 983 | osb = OCFS2_SB(old_dir->i_sb); |
| 984 | |
| 985 | if (new_inode) { |
| 986 | if (!igrab(new_inode)) |
| 987 | BUG(); |
| 988 | } |
| 989 | |
Uwe Kleine-König | 1b3c371 | 2007-02-17 19:23:03 +0100 | [diff] [blame] | 990 | /* Assume a directory hierarchy thusly: |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 991 | * a/b/c |
| 992 | * a/d |
| 993 | * a,b,c, and d are all directories. |
| 994 | * |
| 995 | * from cwd of 'a' on both nodes: |
| 996 | * node1: mv b/c d |
| 997 | * node2: mv d b/c |
| 998 | * |
| 999 | * And that's why, just like the VFS, we need a file system |
| 1000 | * rename lock. */ |
| 1001 | if (old_dentry != new_dentry) { |
| 1002 | status = ocfs2_rename_lock(osb); |
| 1003 | if (status < 0) { |
| 1004 | mlog_errno(status); |
| 1005 | goto bail; |
| 1006 | } |
| 1007 | rename_lock = 1; |
| 1008 | } |
| 1009 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1010 | /* if old and new are the same, this'll just do one lock. */ |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1011 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
| 1012 | &new_dir_bh, new_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1013 | if (status < 0) { |
| 1014 | mlog_errno(status); |
| 1015 | goto bail; |
| 1016 | } |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1017 | parents_locked = 1; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1018 | |
| 1019 | /* make sure both dirs have bhs |
| 1020 | * get an extra ref on old_dir_bh if old==new */ |
| 1021 | if (!new_dir_bh) { |
| 1022 | if (old_dir_bh) { |
| 1023 | new_dir_bh = old_dir_bh; |
| 1024 | get_bh(new_dir_bh); |
| 1025 | } else { |
| 1026 | mlog(ML_ERROR, "no old_dir_bh!\n"); |
| 1027 | status = -EIO; |
| 1028 | goto bail; |
| 1029 | } |
| 1030 | } |
| 1031 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1032 | /* |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1033 | * Aside from allowing a meta data update, the locking here |
| 1034 | * also ensures that the vote thread on other nodes won't have |
| 1035 | * to concurrently downconvert the inode and the dentry locks. |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1036 | */ |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1037 | status = ocfs2_meta_lock(old_inode, &old_inode_bh, 1); |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1038 | if (status < 0) { |
| 1039 | if (status != -ENOENT) |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1040 | mlog_errno(status); |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1041 | goto bail; |
| 1042 | } |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1043 | old_child_locked = 1; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1044 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1045 | status = ocfs2_remote_dentry_delete(old_dentry); |
| 1046 | if (status < 0) { |
| 1047 | mlog_errno(status); |
| 1048 | goto bail; |
| 1049 | } |
| 1050 | |
| 1051 | if (S_ISDIR(old_inode->i_mode)) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1052 | status = -EIO; |
| 1053 | old_inode_de_bh = ocfs2_bread(old_inode, 0, &status, 0); |
| 1054 | if (!old_inode_de_bh) |
| 1055 | goto bail; |
| 1056 | |
| 1057 | status = -EIO; |
| 1058 | if (le64_to_cpu(PARENT_INO(old_inode_de_bh->b_data)) != |
| 1059 | OCFS2_I(old_dir)->ip_blkno) |
| 1060 | goto bail; |
| 1061 | status = -EMLINK; |
| 1062 | if (!new_inode && new_dir!=old_dir && |
| 1063 | new_dir->i_nlink >= OCFS2_LINK_MAX) |
| 1064 | goto bail; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1065 | } |
| 1066 | |
| 1067 | status = -ENOENT; |
| 1068 | old_de_bh = ocfs2_find_entry(old_dentry->d_name.name, |
| 1069 | old_dentry->d_name.len, |
| 1070 | old_dir, &old_de); |
| 1071 | if (!old_de_bh) |
| 1072 | goto bail; |
| 1073 | |
| 1074 | /* |
| 1075 | * Check for inode number is _not_ due to possible IO errors. |
| 1076 | * We might rmdir the source, keep it as pwd of some process |
| 1077 | * and merrily kill the link to whatever was created under the |
| 1078 | * same name. Goodbye sticky bit ;-< |
| 1079 | */ |
| 1080 | if (le64_to_cpu(old_de->inode) != OCFS2_I(old_inode)->ip_blkno) |
| 1081 | goto bail; |
| 1082 | |
| 1083 | /* check if the target already exists (in which case we need |
| 1084 | * to delete it */ |
| 1085 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, |
| 1086 | new_dentry->d_name.len, |
| 1087 | &newfe_blkno, new_dir, &new_de_bh, |
| 1088 | &new_de); |
| 1089 | /* The only error we allow here is -ENOENT because the new |
| 1090 | * file not existing is perfectly valid. */ |
| 1091 | if ((status < 0) && (status != -ENOENT)) { |
| 1092 | /* If we cannot find the file specified we should just */ |
| 1093 | /* return the error... */ |
| 1094 | mlog_errno(status); |
| 1095 | goto bail; |
| 1096 | } |
| 1097 | |
| 1098 | if (!new_de && new_inode) |
| 1099 | mlog(ML_ERROR, "inode %lu does not exist in it's parent " |
| 1100 | "directory!", new_inode->i_ino); |
| 1101 | |
| 1102 | /* In case we need to overwrite an existing file, we blow it |
| 1103 | * away first */ |
| 1104 | if (new_de) { |
| 1105 | /* VFS didn't think there existed an inode here, but |
| 1106 | * someone else in the cluster must have raced our |
| 1107 | * rename to create one. Today we error cleanly, in |
| 1108 | * the future we should consider calling iget to build |
| 1109 | * a new struct inode for this entry. */ |
| 1110 | if (!new_inode) { |
| 1111 | status = -EACCES; |
| 1112 | |
| 1113 | mlog(0, "We found an inode for name %.*s but VFS " |
| 1114 | "didn't give us one.\n", new_dentry->d_name.len, |
| 1115 | new_dentry->d_name.name); |
| 1116 | goto bail; |
| 1117 | } |
| 1118 | |
| 1119 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { |
| 1120 | status = -EACCES; |
| 1121 | |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1122 | mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n", |
| 1123 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
| 1124 | (unsigned long long)newfe_blkno, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1125 | OCFS2_I(new_inode)->ip_flags); |
| 1126 | goto bail; |
| 1127 | } |
| 1128 | |
Mark Fasheh | 4bcec18 | 2006-10-09 16:02:40 -0700 | [diff] [blame] | 1129 | status = ocfs2_meta_lock(new_inode, &newfe_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1130 | if (status < 0) { |
| 1131 | if (status != -ENOENT) |
| 1132 | mlog_errno(status); |
| 1133 | goto bail; |
| 1134 | } |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1135 | new_child_locked = 1; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1136 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1137 | status = ocfs2_remote_dentry_delete(new_dentry); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1138 | if (status < 0) { |
| 1139 | mlog_errno(status); |
| 1140 | goto bail; |
| 1141 | } |
| 1142 | |
| 1143 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; |
| 1144 | |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1145 | mlog(0, "aha rename over existing... new_de=%p new_blkno=%llu " |
| 1146 | "newfebh=%p bhblocknr=%llu\n", new_de, |
| 1147 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1148 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
| 1149 | |
| 1150 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1151 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1152 | new_inode, |
| 1153 | orphan_name, |
| 1154 | &orphan_entry_bh); |
| 1155 | if (status < 0) { |
| 1156 | mlog_errno(status); |
| 1157 | goto bail; |
| 1158 | } |
| 1159 | } |
| 1160 | } else { |
| 1161 | BUG_ON(new_dentry->d_parent->d_inode != new_dir); |
| 1162 | |
| 1163 | status = ocfs2_check_dir_for_entry(new_dir, |
| 1164 | new_dentry->d_name.name, |
| 1165 | new_dentry->d_name.len); |
| 1166 | if (status) |
| 1167 | goto bail; |
| 1168 | |
| 1169 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, |
| 1170 | new_dentry->d_name.name, |
| 1171 | new_dentry->d_name.len, |
| 1172 | &insert_entry_bh); |
| 1173 | if (status < 0) { |
| 1174 | mlog_errno(status); |
| 1175 | goto bail; |
| 1176 | } |
| 1177 | } |
| 1178 | |
Mark Fasheh | 65eff9c | 2006-10-09 17:26:22 -0700 | [diff] [blame] | 1179 | handle = ocfs2_start_trans(osb, OCFS2_RENAME_CREDITS); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1180 | if (IS_ERR(handle)) { |
| 1181 | status = PTR_ERR(handle); |
| 1182 | handle = NULL; |
| 1183 | mlog_errno(status); |
| 1184 | goto bail; |
| 1185 | } |
| 1186 | |
| 1187 | if (new_de) { |
| 1188 | if (S_ISDIR(new_inode->i_mode)) { |
| 1189 | if (!ocfs2_empty_dir(new_inode) || |
| 1190 | new_inode->i_nlink != 2) { |
| 1191 | status = -ENOTEMPTY; |
| 1192 | goto bail; |
| 1193 | } |
| 1194 | } |
| 1195 | status = ocfs2_journal_access(handle, new_inode, newfe_bh, |
| 1196 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 1197 | if (status < 0) { |
| 1198 | mlog_errno(status); |
| 1199 | goto bail; |
| 1200 | } |
| 1201 | |
| 1202 | if (S_ISDIR(new_inode->i_mode) || |
| 1203 | (newfe->i_links_count == cpu_to_le16(1))){ |
| 1204 | status = ocfs2_orphan_add(osb, handle, new_inode, |
| 1205 | newfe, orphan_name, |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1206 | orphan_entry_bh, orphan_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1207 | if (status < 0) { |
| 1208 | mlog_errno(status); |
| 1209 | goto bail; |
| 1210 | } |
| 1211 | } |
| 1212 | |
| 1213 | /* change the dirent to point to the correct inode */ |
| 1214 | status = ocfs2_journal_access(handle, new_dir, new_de_bh, |
| 1215 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 1216 | if (status < 0) { |
| 1217 | mlog_errno(status); |
| 1218 | goto bail; |
| 1219 | } |
| 1220 | new_de->inode = cpu_to_le64(OCFS2_I(old_inode)->ip_blkno); |
| 1221 | new_de->file_type = old_de->file_type; |
| 1222 | new_dir->i_version++; |
| 1223 | status = ocfs2_journal_dirty(handle, new_de_bh); |
| 1224 | if (status < 0) { |
| 1225 | mlog_errno(status); |
| 1226 | goto bail; |
| 1227 | } |
| 1228 | |
| 1229 | if (S_ISDIR(new_inode->i_mode)) |
| 1230 | newfe->i_links_count = 0; |
| 1231 | else |
| 1232 | le16_add_cpu(&newfe->i_links_count, -1); |
| 1233 | |
| 1234 | status = ocfs2_journal_dirty(handle, newfe_bh); |
| 1235 | if (status < 0) { |
| 1236 | mlog_errno(status); |
| 1237 | goto bail; |
| 1238 | } |
| 1239 | } else { |
| 1240 | /* if the name was not found in new_dir, add it now */ |
| 1241 | status = ocfs2_add_entry(handle, new_dentry, old_inode, |
| 1242 | OCFS2_I(old_inode)->ip_blkno, |
| 1243 | new_dir_bh, insert_entry_bh); |
| 1244 | } |
| 1245 | |
| 1246 | old_inode->i_ctime = CURRENT_TIME; |
| 1247 | mark_inode_dirty(old_inode); |
Sunil Mushran | 480214d | 2007-08-06 15:11:56 -0700 | [diff] [blame] | 1248 | |
| 1249 | status = ocfs2_journal_access(handle, old_inode, old_inode_bh, |
| 1250 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 1251 | if (status >= 0) { |
| 1252 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; |
| 1253 | |
| 1254 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); |
| 1255 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); |
| 1256 | |
| 1257 | status = ocfs2_journal_dirty(handle, old_inode_bh); |
| 1258 | if (status < 0) |
| 1259 | mlog_errno(status); |
| 1260 | } else |
| 1261 | mlog_errno(status); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1262 | |
| 1263 | /* now that the name has been added to new_dir, remove the old name */ |
| 1264 | status = ocfs2_delete_entry(handle, old_dir, old_de, old_de_bh); |
| 1265 | if (status < 0) { |
| 1266 | mlog_errno(status); |
| 1267 | goto bail; |
| 1268 | } |
| 1269 | |
| 1270 | if (new_inode) { |
| 1271 | new_inode->i_nlink--; |
| 1272 | new_inode->i_ctime = CURRENT_TIME; |
| 1273 | } |
| 1274 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; |
| 1275 | if (old_inode_de_bh) { |
| 1276 | status = ocfs2_journal_access(handle, old_inode, |
| 1277 | old_inode_de_bh, |
| 1278 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 1279 | PARENT_INO(old_inode_de_bh->b_data) = |
| 1280 | cpu_to_le64(OCFS2_I(new_dir)->ip_blkno); |
| 1281 | status = ocfs2_journal_dirty(handle, old_inode_de_bh); |
| 1282 | old_dir->i_nlink--; |
| 1283 | if (new_inode) { |
| 1284 | new_inode->i_nlink--; |
| 1285 | } else { |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 1286 | inc_nlink(new_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1287 | mark_inode_dirty(new_dir); |
| 1288 | } |
| 1289 | } |
| 1290 | mark_inode_dirty(old_dir); |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1291 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
| 1292 | if (new_inode) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1293 | mark_inode_dirty(new_inode); |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1294 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
| 1295 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1296 | |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1297 | if (old_dir != new_dir) { |
| 1298 | /* Keep the same times on both directories.*/ |
| 1299 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; |
| 1300 | |
| 1301 | /* |
| 1302 | * This will also pick up the i_nlink change from the |
| 1303 | * block above. |
| 1304 | */ |
| 1305 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); |
| 1306 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1307 | |
| 1308 | if (old_dir_nlink != old_dir->i_nlink) { |
| 1309 | if (!old_dir_bh) { |
| 1310 | mlog(ML_ERROR, "need to change nlink for old dir " |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1311 | "%llu from %d to %d but bh is NULL!\n", |
| 1312 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, |
| 1313 | (int)old_dir_nlink, old_dir->i_nlink); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1314 | } else { |
| 1315 | struct ocfs2_dinode *fe; |
| 1316 | status = ocfs2_journal_access(handle, old_dir, |
| 1317 | old_dir_bh, |
| 1318 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 1319 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
| 1320 | fe->i_links_count = cpu_to_le16(old_dir->i_nlink); |
| 1321 | status = ocfs2_journal_dirty(handle, old_dir_bh); |
| 1322 | } |
| 1323 | } |
| 1324 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1325 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1326 | status = 0; |
| 1327 | bail: |
| 1328 | if (rename_lock) |
| 1329 | ocfs2_rename_unlock(osb); |
| 1330 | |
| 1331 | if (handle) |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 1332 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1333 | |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1334 | if (parents_locked) |
| 1335 | ocfs2_double_unlock(old_dir, new_dir); |
| 1336 | |
| 1337 | if (old_child_locked) |
| 1338 | ocfs2_meta_unlock(old_inode, 1); |
| 1339 | |
| 1340 | if (new_child_locked) |
| 1341 | ocfs2_meta_unlock(new_inode, 1); |
| 1342 | |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1343 | if (orphan_dir) { |
| 1344 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ |
| 1345 | ocfs2_meta_unlock(orphan_dir, 1); |
| 1346 | mutex_unlock(&orphan_dir->i_mutex); |
| 1347 | iput(orphan_dir); |
| 1348 | } |
| 1349 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1350 | if (new_inode) |
| 1351 | sync_mapping_buffers(old_inode->i_mapping); |
| 1352 | |
| 1353 | if (new_inode) |
| 1354 | iput(new_inode); |
| 1355 | if (newfe_bh) |
| 1356 | brelse(newfe_bh); |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1357 | if (old_inode_bh) |
| 1358 | brelse(old_inode_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1359 | if (old_dir_bh) |
| 1360 | brelse(old_dir_bh); |
| 1361 | if (new_dir_bh) |
| 1362 | brelse(new_dir_bh); |
| 1363 | if (new_de_bh) |
| 1364 | brelse(new_de_bh); |
| 1365 | if (old_de_bh) |
| 1366 | brelse(old_de_bh); |
| 1367 | if (old_inode_de_bh) |
| 1368 | brelse(old_inode_de_bh); |
| 1369 | if (orphan_entry_bh) |
| 1370 | brelse(orphan_entry_bh); |
| 1371 | if (insert_entry_bh) |
| 1372 | brelse(insert_entry_bh); |
| 1373 | |
| 1374 | mlog_exit(status); |
| 1375 | |
| 1376 | return status; |
| 1377 | } |
| 1378 | |
| 1379 | /* |
| 1380 | * we expect i_size = strlen(symname). Copy symname into the file |
| 1381 | * data, including the null terminator. |
| 1382 | */ |
| 1383 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 1384 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1385 | struct inode *inode, |
| 1386 | const char *symname) |
| 1387 | { |
| 1388 | struct buffer_head **bhs = NULL; |
| 1389 | const char *c; |
| 1390 | struct super_block *sb = osb->sb; |
Mark Fasheh | 4f902c3 | 2007-03-09 16:26:50 -0800 | [diff] [blame] | 1391 | u64 p_blkno, p_blocks; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1392 | int virtual, blocks, status, i, bytes_left; |
| 1393 | |
| 1394 | bytes_left = i_size_read(inode) + 1; |
| 1395 | /* we can't trust i_blocks because we're actually going to |
| 1396 | * write i_size + 1 bytes. */ |
| 1397 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; |
| 1398 | |
Andrew Morton | 5515eff | 2006-03-26 01:37:53 -0800 | [diff] [blame] | 1399 | mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n", |
| 1400 | (unsigned long long)inode->i_blocks, |
| 1401 | i_size_read(inode), blocks); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1402 | |
| 1403 | /* Sanity check -- make sure we're going to fit. */ |
| 1404 | if (bytes_left > |
| 1405 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { |
| 1406 | status = -EIO; |
| 1407 | mlog_errno(status); |
| 1408 | goto bail; |
| 1409 | } |
| 1410 | |
| 1411 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); |
| 1412 | if (!bhs) { |
| 1413 | status = -ENOMEM; |
| 1414 | mlog_errno(status); |
| 1415 | goto bail; |
| 1416 | } |
| 1417 | |
Mark Fasheh | 49cb8d2 | 2007-03-09 16:21:46 -0800 | [diff] [blame] | 1418 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
| 1419 | NULL); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1420 | if (status < 0) { |
| 1421 | mlog_errno(status); |
| 1422 | goto bail; |
| 1423 | } |
| 1424 | |
| 1425 | /* links can never be larger than one cluster so we know this |
| 1426 | * is all going to be contiguous, but do a sanity check |
| 1427 | * anyway. */ |
| 1428 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { |
| 1429 | status = -EIO; |
| 1430 | mlog_errno(status); |
| 1431 | goto bail; |
| 1432 | } |
| 1433 | |
| 1434 | virtual = 0; |
| 1435 | while(bytes_left > 0) { |
| 1436 | c = &symname[virtual * sb->s_blocksize]; |
| 1437 | |
| 1438 | bhs[virtual] = sb_getblk(sb, p_blkno); |
| 1439 | if (!bhs[virtual]) { |
| 1440 | status = -ENOMEM; |
| 1441 | mlog_errno(status); |
| 1442 | goto bail; |
| 1443 | } |
| 1444 | ocfs2_set_new_buffer_uptodate(inode, bhs[virtual]); |
| 1445 | |
| 1446 | status = ocfs2_journal_access(handle, inode, bhs[virtual], |
| 1447 | OCFS2_JOURNAL_ACCESS_CREATE); |
| 1448 | if (status < 0) { |
| 1449 | mlog_errno(status); |
| 1450 | goto bail; |
| 1451 | } |
| 1452 | |
| 1453 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); |
| 1454 | |
| 1455 | memcpy(bhs[virtual]->b_data, c, |
| 1456 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : |
| 1457 | bytes_left); |
| 1458 | |
| 1459 | status = ocfs2_journal_dirty(handle, bhs[virtual]); |
| 1460 | if (status < 0) { |
| 1461 | mlog_errno(status); |
| 1462 | goto bail; |
| 1463 | } |
| 1464 | |
| 1465 | virtual++; |
| 1466 | p_blkno++; |
| 1467 | bytes_left -= sb->s_blocksize; |
| 1468 | } |
| 1469 | |
| 1470 | status = 0; |
| 1471 | bail: |
| 1472 | |
| 1473 | if (bhs) { |
| 1474 | for(i = 0; i < blocks; i++) |
| 1475 | if (bhs[i]) |
| 1476 | brelse(bhs[i]); |
| 1477 | kfree(bhs); |
| 1478 | } |
| 1479 | |
| 1480 | mlog_exit(status); |
| 1481 | return status; |
| 1482 | } |
| 1483 | |
| 1484 | static int ocfs2_symlink(struct inode *dir, |
| 1485 | struct dentry *dentry, |
| 1486 | const char *symname) |
| 1487 | { |
| 1488 | int status, l, credits; |
| 1489 | u64 newsize; |
| 1490 | struct ocfs2_super *osb = NULL; |
| 1491 | struct inode *inode = NULL; |
| 1492 | struct super_block *sb; |
| 1493 | struct buffer_head *new_fe_bh = NULL; |
| 1494 | struct buffer_head *de_bh = NULL; |
| 1495 | struct buffer_head *parent_fe_bh = NULL; |
| 1496 | struct ocfs2_dinode *fe = NULL; |
| 1497 | struct ocfs2_dinode *dirfe; |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 1498 | handle_t *handle = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1499 | struct ocfs2_alloc_context *inode_ac = NULL; |
| 1500 | struct ocfs2_alloc_context *data_ac = NULL; |
| 1501 | |
| 1502 | mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir, |
| 1503 | dentry, symname, dentry->d_name.len, dentry->d_name.name); |
| 1504 | |
| 1505 | sb = dir->i_sb; |
| 1506 | osb = OCFS2_SB(sb); |
| 1507 | |
| 1508 | l = strlen(symname) + 1; |
| 1509 | |
| 1510 | credits = ocfs2_calc_symlink_credits(sb); |
| 1511 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1512 | /* lock the parent directory */ |
Mark Fasheh | 4bcec18 | 2006-10-09 16:02:40 -0700 | [diff] [blame] | 1513 | status = ocfs2_meta_lock(dir, &parent_fe_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1514 | if (status < 0) { |
| 1515 | if (status != -ENOENT) |
| 1516 | mlog_errno(status); |
Mark Fasheh | 6d8fc40 | 2006-10-06 11:54:33 -0700 | [diff] [blame] | 1517 | return status; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1518 | } |
| 1519 | |
| 1520 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
| 1521 | if (!dirfe->i_links_count) { |
| 1522 | /* can't make a file in a deleted directory. */ |
| 1523 | status = -ENOENT; |
| 1524 | goto bail; |
| 1525 | } |
| 1526 | |
| 1527 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
| 1528 | dentry->d_name.len); |
| 1529 | if (status) |
| 1530 | goto bail; |
| 1531 | |
| 1532 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, |
| 1533 | dentry->d_name.name, |
| 1534 | dentry->d_name.len, &de_bh); |
| 1535 | if (status < 0) { |
| 1536 | mlog_errno(status); |
| 1537 | goto bail; |
| 1538 | } |
| 1539 | |
Mark Fasheh | da5cbf2 | 2006-10-06 18:34:35 -0700 | [diff] [blame] | 1540 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1541 | if (status < 0) { |
| 1542 | if (status != -ENOSPC) |
| 1543 | mlog_errno(status); |
| 1544 | goto bail; |
| 1545 | } |
| 1546 | |
| 1547 | /* don't reserve bitmap space for fast symlinks. */ |
| 1548 | if (l > ocfs2_fast_symlink_chars(sb)) { |
Mark Fasheh | da5cbf2 | 2006-10-06 18:34:35 -0700 | [diff] [blame] | 1549 | status = ocfs2_reserve_clusters(osb, 1, &data_ac); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1550 | if (status < 0) { |
| 1551 | if (status != -ENOSPC) |
| 1552 | mlog_errno(status); |
| 1553 | goto bail; |
| 1554 | } |
| 1555 | } |
| 1556 | |
Mark Fasheh | 65eff9c | 2006-10-09 17:26:22 -0700 | [diff] [blame] | 1557 | handle = ocfs2_start_trans(osb, credits); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1558 | if (IS_ERR(handle)) { |
| 1559 | status = PTR_ERR(handle); |
| 1560 | handle = NULL; |
| 1561 | mlog_errno(status); |
| 1562 | goto bail; |
| 1563 | } |
| 1564 | |
| 1565 | status = ocfs2_mknod_locked(osb, dir, dentry, |
| 1566 | S_IFLNK | S_IRWXUGO, 0, |
| 1567 | &new_fe_bh, parent_fe_bh, handle, |
| 1568 | &inode, inode_ac); |
| 1569 | if (status < 0) { |
| 1570 | mlog_errno(status); |
| 1571 | goto bail; |
| 1572 | } |
| 1573 | |
| 1574 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; |
| 1575 | inode->i_rdev = 0; |
| 1576 | newsize = l - 1; |
| 1577 | if (l > ocfs2_fast_symlink_chars(sb)) { |
Mark Fasheh | dcd0538 | 2007-01-16 11:32:23 -0800 | [diff] [blame] | 1578 | u32 offset = 0; |
| 1579 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1580 | inode->i_op = &ocfs2_symlink_inode_operations; |
Mark Fasheh | 2ae99a6 | 2007-03-09 16:43:28 -0800 | [diff] [blame] | 1581 | status = ocfs2_do_extend_allocation(osb, inode, &offset, 1, 0, |
Mark Fasheh | dcd0538 | 2007-01-16 11:32:23 -0800 | [diff] [blame] | 1582 | new_fe_bh, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1583 | handle, data_ac, NULL, |
| 1584 | NULL); |
| 1585 | if (status < 0) { |
| 1586 | if (status != -ENOSPC && status != -EINTR) { |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1587 | mlog(ML_ERROR, |
| 1588 | "Failed to extend file to %llu\n", |
| 1589 | (unsigned long long)newsize); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1590 | mlog_errno(status); |
| 1591 | status = -ENOSPC; |
| 1592 | } |
| 1593 | goto bail; |
| 1594 | } |
| 1595 | i_size_write(inode, newsize); |
Mark Fasheh | 8110b07 | 2007-03-22 16:53:23 -0700 | [diff] [blame] | 1596 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1597 | } else { |
| 1598 | inode->i_op = &ocfs2_fast_symlink_inode_operations; |
| 1599 | memcpy((char *) fe->id2.i_symlink, symname, l); |
| 1600 | i_size_write(inode, newsize); |
| 1601 | inode->i_blocks = 0; |
| 1602 | } |
| 1603 | |
| 1604 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); |
| 1605 | if (status < 0) { |
| 1606 | mlog_errno(status); |
| 1607 | goto bail; |
| 1608 | } |
| 1609 | |
| 1610 | if (!ocfs2_inode_is_fast_symlink(inode)) { |
| 1611 | status = ocfs2_create_symlink_data(osb, handle, inode, |
| 1612 | symname); |
| 1613 | if (status < 0) { |
| 1614 | mlog_errno(status); |
| 1615 | goto bail; |
| 1616 | } |
| 1617 | } |
| 1618 | |
| 1619 | status = ocfs2_add_entry(handle, dentry, inode, |
| 1620 | le64_to_cpu(fe->i_blkno), parent_fe_bh, |
| 1621 | de_bh); |
| 1622 | if (status < 0) { |
| 1623 | mlog_errno(status); |
| 1624 | goto bail; |
| 1625 | } |
| 1626 | |
Mark Fasheh | 0027dd5 | 2006-09-21 16:51:28 -0700 | [diff] [blame] | 1627 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1628 | if (status) { |
| 1629 | mlog_errno(status); |
| 1630 | goto bail; |
| 1631 | } |
| 1632 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1633 | insert_inode_hash(inode); |
| 1634 | dentry->d_op = &ocfs2_dentry_ops; |
| 1635 | d_instantiate(dentry, inode); |
| 1636 | bail: |
| 1637 | if (handle) |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 1638 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | 6d8fc40 | 2006-10-06 11:54:33 -0700 | [diff] [blame] | 1639 | |
| 1640 | ocfs2_meta_unlock(dir, 1); |
| 1641 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1642 | if (new_fe_bh) |
| 1643 | brelse(new_fe_bh); |
| 1644 | if (parent_fe_bh) |
| 1645 | brelse(parent_fe_bh); |
| 1646 | if (de_bh) |
| 1647 | brelse(de_bh); |
| 1648 | if (inode_ac) |
| 1649 | ocfs2_free_alloc_context(inode_ac); |
| 1650 | if (data_ac) |
| 1651 | ocfs2_free_alloc_context(data_ac); |
| 1652 | if ((status < 0) && inode) |
| 1653 | iput(inode); |
| 1654 | |
| 1655 | mlog_exit(status); |
| 1656 | |
| 1657 | return status; |
| 1658 | } |
| 1659 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1660 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
| 1661 | { |
| 1662 | int status, namelen; |
| 1663 | |
| 1664 | mlog_entry_void(); |
| 1665 | |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1666 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
| 1667 | (long long)blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1668 | if (namelen <= 0) { |
| 1669 | if (namelen) |
| 1670 | status = namelen; |
| 1671 | else |
| 1672 | status = -EINVAL; |
| 1673 | mlog_errno(status); |
| 1674 | goto bail; |
| 1675 | } |
| 1676 | if (namelen != OCFS2_ORPHAN_NAMELEN) { |
| 1677 | status = -EINVAL; |
| 1678 | mlog_errno(status); |
| 1679 | goto bail; |
| 1680 | } |
| 1681 | |
| 1682 | mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name, |
| 1683 | namelen); |
| 1684 | |
| 1685 | status = 0; |
| 1686 | bail: |
| 1687 | mlog_exit(status); |
| 1688 | return status; |
| 1689 | } |
| 1690 | |
| 1691 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1692 | struct inode **ret_orphan_dir, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1693 | struct inode *inode, |
| 1694 | char *name, |
| 1695 | struct buffer_head **de_bh) |
| 1696 | { |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1697 | struct inode *orphan_dir_inode; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1698 | struct buffer_head *orphan_dir_bh = NULL; |
| 1699 | int status = 0; |
| 1700 | |
| 1701 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); |
| 1702 | if (status < 0) { |
| 1703 | mlog_errno(status); |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1704 | return status; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1705 | } |
| 1706 | |
| 1707 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
| 1708 | ORPHAN_DIR_SYSTEM_INODE, |
| 1709 | osb->slot_num); |
| 1710 | if (!orphan_dir_inode) { |
| 1711 | status = -ENOENT; |
| 1712 | mlog_errno(status); |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1713 | return status; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1714 | } |
| 1715 | |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1716 | mutex_lock(&orphan_dir_inode->i_mutex); |
| 1717 | |
Mark Fasheh | 4bcec18 | 2006-10-09 16:02:40 -0700 | [diff] [blame] | 1718 | status = ocfs2_meta_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1719 | if (status < 0) { |
| 1720 | mlog_errno(status); |
| 1721 | goto leave; |
| 1722 | } |
| 1723 | |
| 1724 | status = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, |
| 1725 | orphan_dir_bh, name, |
| 1726 | OCFS2_ORPHAN_NAMELEN, de_bh); |
| 1727 | if (status < 0) { |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1728 | ocfs2_meta_unlock(orphan_dir_inode, 1); |
| 1729 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1730 | mlog_errno(status); |
| 1731 | goto leave; |
| 1732 | } |
| 1733 | |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1734 | *ret_orphan_dir = orphan_dir_inode; |
| 1735 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1736 | leave: |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1737 | if (status) { |
| 1738 | mutex_unlock(&orphan_dir_inode->i_mutex); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1739 | iput(orphan_dir_inode); |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1740 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1741 | |
| 1742 | if (orphan_dir_bh) |
| 1743 | brelse(orphan_dir_bh); |
| 1744 | |
| 1745 | mlog_exit(status); |
| 1746 | return status; |
| 1747 | } |
| 1748 | |
| 1749 | static int ocfs2_orphan_add(struct ocfs2_super *osb, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 1750 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1751 | struct inode *inode, |
| 1752 | struct ocfs2_dinode *fe, |
| 1753 | char *name, |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1754 | struct buffer_head *de_bh, |
| 1755 | struct inode *orphan_dir_inode) |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1756 | { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1757 | struct buffer_head *orphan_dir_bh = NULL; |
| 1758 | int status = 0; |
| 1759 | struct ocfs2_dinode *orphan_fe; |
| 1760 | |
| 1761 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); |
| 1762 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1763 | status = ocfs2_read_block(osb, |
| 1764 | OCFS2_I(orphan_dir_inode)->ip_blkno, |
| 1765 | &orphan_dir_bh, OCFS2_BH_CACHED, |
| 1766 | orphan_dir_inode); |
| 1767 | if (status < 0) { |
| 1768 | mlog_errno(status); |
| 1769 | goto leave; |
| 1770 | } |
| 1771 | |
| 1772 | status = ocfs2_journal_access(handle, orphan_dir_inode, orphan_dir_bh, |
| 1773 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 1774 | if (status < 0) { |
| 1775 | mlog_errno(status); |
| 1776 | goto leave; |
| 1777 | } |
| 1778 | |
| 1779 | /* we're a cluster, and nlink can change on disk from |
| 1780 | * underneath us... */ |
| 1781 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; |
| 1782 | if (S_ISDIR(inode->i_mode)) |
| 1783 | le16_add_cpu(&orphan_fe->i_links_count, 1); |
| 1784 | orphan_dir_inode->i_nlink = le16_to_cpu(orphan_fe->i_links_count); |
| 1785 | |
| 1786 | status = ocfs2_journal_dirty(handle, orphan_dir_bh); |
| 1787 | if (status < 0) { |
| 1788 | mlog_errno(status); |
| 1789 | goto leave; |
| 1790 | } |
| 1791 | |
| 1792 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, |
| 1793 | OCFS2_ORPHAN_NAMELEN, inode, |
| 1794 | OCFS2_I(inode)->ip_blkno, |
| 1795 | orphan_dir_bh, de_bh); |
| 1796 | if (status < 0) { |
| 1797 | mlog_errno(status); |
| 1798 | goto leave; |
| 1799 | } |
| 1800 | |
| 1801 | le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL); |
| 1802 | |
| 1803 | /* Record which orphan dir our inode now resides |
| 1804 | * in. delete_inode will use this to determine which orphan |
| 1805 | * dir to lock. */ |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 1806 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1807 | |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1808 | mlog(0, "Inode %llu orphaned in slot %d\n", |
| 1809 | (unsigned long long)OCFS2_I(inode)->ip_blkno, osb->slot_num); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1810 | |
| 1811 | leave: |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1812 | if (orphan_dir_bh) |
| 1813 | brelse(orphan_dir_bh); |
| 1814 | |
| 1815 | mlog_exit(status); |
| 1816 | return status; |
| 1817 | } |
| 1818 | |
| 1819 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ |
| 1820 | int ocfs2_orphan_del(struct ocfs2_super *osb, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 1821 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1822 | struct inode *orphan_dir_inode, |
| 1823 | struct inode *inode, |
| 1824 | struct buffer_head *orphan_dir_bh) |
| 1825 | { |
| 1826 | char name[OCFS2_ORPHAN_NAMELEN + 1]; |
| 1827 | struct ocfs2_dinode *orphan_fe; |
| 1828 | int status = 0; |
| 1829 | struct buffer_head *target_de_bh = NULL; |
| 1830 | struct ocfs2_dir_entry *target_de = NULL; |
| 1831 | |
| 1832 | mlog_entry_void(); |
| 1833 | |
| 1834 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); |
| 1835 | if (status < 0) { |
| 1836 | mlog_errno(status); |
| 1837 | goto leave; |
| 1838 | } |
| 1839 | |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1840 | mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n", |
| 1841 | name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, |
| 1842 | OCFS2_ORPHAN_NAMELEN); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1843 | |
| 1844 | /* find it's spot in the orphan directory */ |
| 1845 | target_de_bh = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, |
| 1846 | orphan_dir_inode, &target_de); |
| 1847 | if (!target_de_bh) { |
| 1848 | status = -ENOENT; |
| 1849 | mlog_errno(status); |
| 1850 | goto leave; |
| 1851 | } |
| 1852 | |
| 1853 | /* remove it from the orphan directory */ |
| 1854 | status = ocfs2_delete_entry(handle, orphan_dir_inode, target_de, |
| 1855 | target_de_bh); |
| 1856 | if (status < 0) { |
| 1857 | mlog_errno(status); |
| 1858 | goto leave; |
| 1859 | } |
| 1860 | |
| 1861 | status = ocfs2_journal_access(handle,orphan_dir_inode, orphan_dir_bh, |
| 1862 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 1863 | if (status < 0) { |
| 1864 | mlog_errno(status); |
| 1865 | goto leave; |
| 1866 | } |
| 1867 | |
| 1868 | /* do the i_nlink dance! :) */ |
| 1869 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; |
| 1870 | if (S_ISDIR(inode->i_mode)) |
| 1871 | le16_add_cpu(&orphan_fe->i_links_count, -1); |
| 1872 | orphan_dir_inode->i_nlink = le16_to_cpu(orphan_fe->i_links_count); |
| 1873 | |
| 1874 | status = ocfs2_journal_dirty(handle, orphan_dir_bh); |
| 1875 | if (status < 0) { |
| 1876 | mlog_errno(status); |
| 1877 | goto leave; |
| 1878 | } |
| 1879 | |
| 1880 | leave: |
| 1881 | if (target_de_bh) |
| 1882 | brelse(target_de_bh); |
| 1883 | |
| 1884 | mlog_exit(status); |
| 1885 | return status; |
| 1886 | } |
| 1887 | |
Arjan van de Ven | 92e1d5b | 2007-02-12 00:55:39 -0800 | [diff] [blame] | 1888 | const struct inode_operations ocfs2_dir_iops = { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1889 | .create = ocfs2_create, |
| 1890 | .lookup = ocfs2_lookup, |
| 1891 | .link = ocfs2_link, |
| 1892 | .unlink = ocfs2_unlink, |
| 1893 | .rmdir = ocfs2_unlink, |
| 1894 | .symlink = ocfs2_symlink, |
| 1895 | .mkdir = ocfs2_mkdir, |
| 1896 | .mknod = ocfs2_mknod, |
| 1897 | .rename = ocfs2_rename, |
| 1898 | .setattr = ocfs2_setattr, |
| 1899 | .getattr = ocfs2_getattr, |
Tiger Yang | d38eb8d | 2006-11-27 09:59:21 +0800 | [diff] [blame] | 1900 | .permission = ocfs2_permission, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1901 | }; |