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" |
Tiger Yang | cf1d6c7 | 2008-08-18 17:11:00 +0800 | [diff] [blame] | 63 | #include "xattr.h" |
Tiger Yang | 89c38bd | 2008-11-14 11:17:41 +0800 | [diff] [blame] | 64 | #include "acl.h" |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 65 | |
| 66 | #include "buffer_head_io.h" |
| 67 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 68 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
| 69 | struct inode *dir, |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 70 | struct inode *inode, |
| 71 | struct dentry *dentry, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 72 | dev_t dev, |
| 73 | struct buffer_head **new_fe_bh, |
| 74 | struct buffer_head *parent_fe_bh, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 75 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 76 | struct ocfs2_alloc_context *inode_ac); |
| 77 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 78 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 79 | struct inode **ret_orphan_dir, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 80 | struct inode *inode, |
| 81 | char *name, |
| 82 | struct buffer_head **de_bh); |
| 83 | |
| 84 | static int ocfs2_orphan_add(struct ocfs2_super *osb, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 85 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 86 | struct inode *inode, |
| 87 | struct ocfs2_dinode *fe, |
| 88 | char *name, |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 89 | struct buffer_head *de_bh, |
| 90 | struct inode *orphan_dir_inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 91 | |
| 92 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 93 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 94 | struct inode *inode, |
| 95 | const char *symname); |
| 96 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 97 | /* An orphan dir name is an 8 byte value, printed as a hex string */ |
| 98 | #define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64))) |
| 99 | |
| 100 | static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry, |
| 101 | struct nameidata *nd) |
| 102 | { |
| 103 | int status; |
| 104 | u64 blkno; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 105 | struct inode *inode = NULL; |
| 106 | struct dentry *ret; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 107 | struct ocfs2_inode_info *oi; |
| 108 | |
| 109 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, |
| 110 | dentry->d_name.len, dentry->d_name.name); |
| 111 | |
| 112 | if (dentry->d_name.len > OCFS2_MAX_FILENAME_LEN) { |
| 113 | ret = ERR_PTR(-ENAMETOOLONG); |
| 114 | goto bail; |
| 115 | } |
| 116 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 117 | mlog(0, "find name %.*s in directory %llu\n", dentry->d_name.len, |
| 118 | dentry->d_name.name, (unsigned long long)OCFS2_I(dir)->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 119 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 120 | status = ocfs2_inode_lock(dir, NULL, 0); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 121 | if (status < 0) { |
| 122 | if (status != -ENOENT) |
| 123 | mlog_errno(status); |
| 124 | ret = ERR_PTR(status); |
| 125 | goto bail; |
| 126 | } |
| 127 | |
Mark Fasheh | be94d11 | 2007-09-11 15:22:06 -0700 | [diff] [blame] | 128 | status = ocfs2_lookup_ino_from_name(dir, dentry->d_name.name, |
| 129 | dentry->d_name.len, &blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 130 | if (status < 0) |
| 131 | goto bail_add; |
| 132 | |
Jan Kara | 5fa0613 | 2008-01-11 00:11:45 +0100 | [diff] [blame] | 133 | inode = ocfs2_iget(OCFS2_SB(dir->i_sb), blkno, 0, 0); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 134 | if (IS_ERR(inode)) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 135 | ret = ERR_PTR(-EACCES); |
| 136 | goto bail_unlock; |
| 137 | } |
| 138 | |
| 139 | oi = OCFS2_I(inode); |
| 140 | /* Clear any orphaned state... If we were able to look up the |
| 141 | * inode from a directory, it certainly can't be orphaned. We |
| 142 | * might have the bad state from a node which intended to |
| 143 | * orphan this inode but crashed before it could commit the |
| 144 | * unlink. */ |
| 145 | spin_lock(&oi->ip_lock); |
| 146 | oi->ip_flags &= ~OCFS2_INODE_MAYBE_ORPHANED; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 147 | spin_unlock(&oi->ip_lock); |
| 148 | |
| 149 | bail_add: |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 150 | dentry->d_op = &ocfs2_dentry_ops; |
| 151 | ret = d_splice_alias(inode, dentry); |
| 152 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 153 | if (inode) { |
| 154 | /* |
| 155 | * If d_splice_alias() finds a DCACHE_DISCONNECTED |
| 156 | * dentry, it will d_move() it on top of ourse. The |
| 157 | * return value will indicate this however, so in |
| 158 | * those cases, we switch them around for the locking |
| 159 | * code. |
| 160 | * |
| 161 | * NOTE: This dentry already has ->d_op set from |
| 162 | * ocfs2_get_parent() and ocfs2_get_dentry() |
| 163 | */ |
| 164 | if (ret) |
| 165 | dentry = ret; |
| 166 | |
| 167 | status = ocfs2_dentry_attach_lock(dentry, inode, |
Mark Fasheh | 0027dd5 | 2006-09-21 16:51:28 -0700 | [diff] [blame] | 168 | OCFS2_I(dir)->ip_blkno); |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 169 | if (status) { |
| 170 | mlog_errno(status); |
| 171 | ret = ERR_PTR(status); |
| 172 | goto bail_unlock; |
| 173 | } |
| 174 | } |
| 175 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 176 | bail_unlock: |
| 177 | /* Don't drop the cluster lock until *after* the d_add -- |
| 178 | * unlink on another node will message us to remove that |
| 179 | * dentry under this lock so otherwise we can race this with |
Mark Fasheh | 34d024f | 2007-09-24 15:56:19 -0700 | [diff] [blame] | 180 | * the downconvert thread and have a stale dentry. */ |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 181 | ocfs2_inode_unlock(dir, 0); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 182 | |
| 183 | bail: |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 184 | |
| 185 | mlog_exit_ptr(ret); |
| 186 | |
| 187 | return ret; |
| 188 | } |
| 189 | |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 190 | static struct inode *ocfs2_get_init_inode(struct inode *dir, int mode) |
| 191 | { |
| 192 | struct inode *inode; |
| 193 | |
| 194 | inode = new_inode(dir->i_sb); |
| 195 | if (!inode) { |
| 196 | mlog(ML_ERROR, "new_inode failed!\n"); |
| 197 | return NULL; |
| 198 | } |
| 199 | |
| 200 | /* populate as many fields early on as possible - many of |
| 201 | * these are used by the support functions here and in |
| 202 | * callers. */ |
| 203 | if (S_ISDIR(mode)) |
| 204 | inode->i_nlink = 2; |
| 205 | else |
| 206 | inode->i_nlink = 1; |
| 207 | inode->i_uid = current_fsuid(); |
| 208 | if (dir->i_mode & S_ISGID) { |
| 209 | inode->i_gid = dir->i_gid; |
| 210 | if (S_ISDIR(mode)) |
| 211 | mode |= S_ISGID; |
| 212 | } else |
| 213 | inode->i_gid = current_fsgid(); |
| 214 | inode->i_mode = mode; |
| 215 | return inode; |
| 216 | } |
| 217 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 218 | static int ocfs2_mknod(struct inode *dir, |
| 219 | struct dentry *dentry, |
| 220 | int mode, |
| 221 | dev_t dev) |
| 222 | { |
| 223 | int status = 0; |
| 224 | struct buffer_head *parent_fe_bh = NULL; |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 225 | handle_t *handle = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 226 | struct ocfs2_super *osb; |
| 227 | struct ocfs2_dinode *dirfe; |
| 228 | struct buffer_head *new_fe_bh = NULL; |
| 229 | struct buffer_head *de_bh = NULL; |
| 230 | struct inode *inode = NULL; |
| 231 | struct ocfs2_alloc_context *inode_ac = NULL; |
| 232 | struct ocfs2_alloc_context *data_ac = NULL; |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 233 | struct ocfs2_alloc_context *xattr_ac = NULL; |
| 234 | int want_clusters = 0; |
| 235 | int xattr_credits = 0; |
| 236 | struct ocfs2_security_xattr_info si = { |
| 237 | .enable = 1, |
| 238 | }; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 239 | |
| 240 | mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode, |
| 241 | (unsigned long)dev, dentry->d_name.len, |
| 242 | dentry->d_name.name); |
| 243 | |
| 244 | /* get our super block */ |
| 245 | osb = OCFS2_SB(dir->i_sb); |
| 246 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 247 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
Mark Fasheh | e3a8213 | 2006-10-05 16:04:17 -0700 | [diff] [blame] | 248 | if (status < 0) { |
| 249 | if (status != -ENOENT) |
| 250 | mlog_errno(status); |
| 251 | return status; |
| 252 | } |
| 253 | |
Mark Fasheh | a663e30 | 2006-08-09 11:45:07 -0700 | [diff] [blame] | 254 | if (S_ISDIR(mode) && (dir->i_nlink >= OCFS2_LINK_MAX)) { |
| 255 | status = -EMLINK; |
| 256 | goto leave; |
| 257 | } |
| 258 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 259 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
| 260 | if (!dirfe->i_links_count) { |
| 261 | /* can't make a file in a deleted directory. */ |
| 262 | status = -ENOENT; |
| 263 | goto leave; |
| 264 | } |
| 265 | |
| 266 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
| 267 | dentry->d_name.len); |
| 268 | if (status) |
| 269 | goto leave; |
| 270 | |
| 271 | /* get a spot inside the dir. */ |
| 272 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, |
| 273 | dentry->d_name.name, |
| 274 | dentry->d_name.len, &de_bh); |
| 275 | if (status < 0) { |
| 276 | mlog_errno(status); |
| 277 | goto leave; |
| 278 | } |
| 279 | |
| 280 | /* reserve an inode spot */ |
Mark Fasheh | da5cbf2 | 2006-10-06 18:34:35 -0700 | [diff] [blame] | 281 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 282 | if (status < 0) { |
| 283 | if (status != -ENOSPC) |
| 284 | mlog_errno(status); |
| 285 | goto leave; |
| 286 | } |
| 287 | |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 288 | inode = ocfs2_get_init_inode(dir, mode); |
| 289 | if (!inode) { |
| 290 | status = -ENOMEM; |
| 291 | mlog_errno(status); |
| 292 | goto leave; |
| 293 | } |
| 294 | |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 295 | /* get security xattr */ |
| 296 | status = ocfs2_init_security_get(inode, dir, &si); |
| 297 | if (status) { |
| 298 | if (status == -EOPNOTSUPP) |
| 299 | si.enable = 0; |
| 300 | else { |
| 301 | mlog_errno(status); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 302 | goto leave; |
| 303 | } |
| 304 | } |
| 305 | |
Tiger Yang | 89c38bd | 2008-11-14 11:17:41 +0800 | [diff] [blame] | 306 | /* calculate meta data/clusters for setting security and acl xattr */ |
| 307 | status = ocfs2_calc_xattr_init(dir, parent_fe_bh, mode, |
| 308 | &si, &want_clusters, |
| 309 | &xattr_credits, &xattr_ac); |
| 310 | if (status < 0) { |
| 311 | mlog_errno(status); |
| 312 | goto leave; |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 313 | } |
| 314 | |
| 315 | /* Reserve a cluster if creating an extent based directory. */ |
| 316 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) |
| 317 | want_clusters += 1; |
| 318 | |
| 319 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
| 320 | if (status < 0) { |
| 321 | if (status != -ENOSPC) |
| 322 | mlog_errno(status); |
| 323 | goto leave; |
| 324 | } |
| 325 | |
| 326 | handle = ocfs2_start_trans(osb, OCFS2_MKNOD_CREDITS + xattr_credits); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 327 | if (IS_ERR(handle)) { |
| 328 | status = PTR_ERR(handle); |
| 329 | handle = NULL; |
| 330 | mlog_errno(status); |
| 331 | goto leave; |
| 332 | } |
| 333 | |
| 334 | /* do the real work now. */ |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 335 | status = ocfs2_mknod_locked(osb, dir, inode, dentry, dev, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 336 | &new_fe_bh, parent_fe_bh, handle, |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 337 | inode_ac); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 338 | if (status < 0) { |
| 339 | mlog_errno(status); |
| 340 | goto leave; |
| 341 | } |
| 342 | |
| 343 | if (S_ISDIR(mode)) { |
| 344 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, |
| 345 | new_fe_bh, data_ac); |
| 346 | if (status < 0) { |
| 347 | mlog_errno(status); |
| 348 | goto leave; |
| 349 | } |
| 350 | |
| 351 | status = ocfs2_journal_access(handle, dir, parent_fe_bh, |
| 352 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 353 | if (status < 0) { |
| 354 | mlog_errno(status); |
| 355 | goto leave; |
| 356 | } |
| 357 | le16_add_cpu(&dirfe->i_links_count, 1); |
| 358 | status = ocfs2_journal_dirty(handle, parent_fe_bh); |
| 359 | if (status < 0) { |
| 360 | mlog_errno(status); |
| 361 | goto leave; |
| 362 | } |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 363 | inc_nlink(dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 364 | } |
| 365 | |
Tiger Yang | 89c38bd | 2008-11-14 11:17:41 +0800 | [diff] [blame] | 366 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
| 367 | xattr_ac, data_ac); |
| 368 | if (status < 0) { |
| 369 | mlog_errno(status); |
| 370 | goto leave; |
| 371 | } |
| 372 | |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 373 | if (si.enable) { |
| 374 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, |
| 375 | xattr_ac, data_ac); |
| 376 | if (status < 0) { |
| 377 | mlog_errno(status); |
| 378 | goto leave; |
| 379 | } |
| 380 | } |
| 381 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 382 | status = ocfs2_add_entry(handle, dentry, inode, |
| 383 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, |
| 384 | de_bh); |
| 385 | if (status < 0) { |
| 386 | mlog_errno(status); |
| 387 | goto leave; |
| 388 | } |
| 389 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 390 | status = ocfs2_dentry_attach_lock(dentry, inode, |
Mark Fasheh | 0027dd5 | 2006-09-21 16:51:28 -0700 | [diff] [blame] | 391 | OCFS2_I(dir)->ip_blkno); |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 392 | if (status) { |
| 393 | mlog_errno(status); |
| 394 | goto leave; |
| 395 | } |
| 396 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 397 | insert_inode_hash(inode); |
| 398 | dentry->d_op = &ocfs2_dentry_ops; |
| 399 | d_instantiate(dentry, inode); |
| 400 | status = 0; |
| 401 | leave: |
| 402 | if (handle) |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 403 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 404 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 405 | ocfs2_inode_unlock(dir, 1); |
Mark Fasheh | e3a8213 | 2006-10-05 16:04:17 -0700 | [diff] [blame] | 406 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 407 | if (status == -ENOSPC) |
| 408 | mlog(0, "Disk is full\n"); |
| 409 | |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 410 | brelse(new_fe_bh); |
| 411 | brelse(de_bh); |
| 412 | brelse(parent_fe_bh); |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 413 | kfree(si.name); |
| 414 | kfree(si.value); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 415 | |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 416 | if ((status < 0) && inode) { |
| 417 | clear_nlink(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 418 | iput(inode); |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 419 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 420 | |
| 421 | if (inode_ac) |
| 422 | ocfs2_free_alloc_context(inode_ac); |
| 423 | |
| 424 | if (data_ac) |
| 425 | ocfs2_free_alloc_context(data_ac); |
| 426 | |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 427 | if (xattr_ac) |
| 428 | ocfs2_free_alloc_context(xattr_ac); |
| 429 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 430 | mlog_exit(status); |
| 431 | |
| 432 | return status; |
| 433 | } |
| 434 | |
| 435 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
| 436 | struct inode *dir, |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 437 | struct inode *inode, |
| 438 | struct dentry *dentry, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 439 | dev_t dev, |
| 440 | struct buffer_head **new_fe_bh, |
| 441 | struct buffer_head *parent_fe_bh, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 442 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 443 | struct ocfs2_alloc_context *inode_ac) |
| 444 | { |
| 445 | int status = 0; |
| 446 | struct ocfs2_dinode *fe = NULL; |
| 447 | struct ocfs2_extent_list *fel; |
| 448 | u64 fe_blkno = 0; |
| 449 | u16 suballoc_bit; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 450 | |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 451 | mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, |
| 452 | inode->i_mode, (unsigned long)dev, dentry->d_name.len, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 453 | dentry->d_name.name); |
| 454 | |
| 455 | *new_fe_bh = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 456 | |
| 457 | status = ocfs2_claim_new_inode(osb, handle, inode_ac, &suballoc_bit, |
| 458 | &fe_blkno); |
| 459 | if (status < 0) { |
| 460 | mlog_errno(status); |
| 461 | goto leave; |
| 462 | } |
| 463 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 464 | /* populate as many fields early on as possible - many of |
| 465 | * these are used by the support functions here and in |
| 466 | * callers. */ |
| 467 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); |
| 468 | OCFS2_I(inode)->ip_blkno = fe_blkno; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 469 | spin_lock(&osb->osb_lock); |
| 470 | inode->i_generation = osb->s_next_generation++; |
| 471 | spin_unlock(&osb->osb_lock); |
| 472 | |
| 473 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); |
| 474 | if (!*new_fe_bh) { |
| 475 | status = -EIO; |
| 476 | mlog_errno(status); |
| 477 | goto leave; |
| 478 | } |
| 479 | ocfs2_set_new_buffer_uptodate(inode, *new_fe_bh); |
| 480 | |
| 481 | status = ocfs2_journal_access(handle, inode, *new_fe_bh, |
| 482 | OCFS2_JOURNAL_ACCESS_CREATE); |
| 483 | if (status < 0) { |
| 484 | mlog_errno(status); |
| 485 | goto leave; |
| 486 | } |
| 487 | |
| 488 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; |
| 489 | memset(fe, 0, osb->sb->s_blocksize); |
| 490 | |
| 491 | fe->i_generation = cpu_to_le32(inode->i_generation); |
| 492 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); |
| 493 | fe->i_blkno = cpu_to_le64(fe_blkno); |
| 494 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
Tao Ma | 4d0ddb2 | 2008-03-05 16:11:46 +0800 | [diff] [blame] | 495 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 496 | fe->i_uid = cpu_to_le32(inode->i_uid); |
| 497 | fe->i_gid = cpu_to_le32(inode->i_gid); |
| 498 | fe->i_mode = cpu_to_le16(inode->i_mode); |
| 499 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 500 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 501 | fe->i_links_count = cpu_to_le16(inode->i_nlink); |
| 502 | |
| 503 | fe->i_last_eb_blk = 0; |
| 504 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); |
| 505 | le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL); |
| 506 | fe->i_atime = fe->i_ctime = fe->i_mtime = |
| 507 | cpu_to_le64(CURRENT_TIME.tv_sec); |
| 508 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = |
| 509 | cpu_to_le32(CURRENT_TIME.tv_nsec); |
| 510 | fe->i_dtime = 0; |
| 511 | |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 512 | /* |
| 513 | * If supported, directories start with inline data. |
| 514 | */ |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 515 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 516 | u16 feat = le16_to_cpu(fe->i_dyn_features); |
| 517 | |
| 518 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
| 519 | |
| 520 | fe->id2.i_data.id_count = cpu_to_le16(ocfs2_max_inline_data(osb->sb)); |
| 521 | } else { |
| 522 | fel = &fe->id2.i_list; |
| 523 | fel->l_tree_depth = 0; |
| 524 | fel->l_next_free_rec = 0; |
| 525 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); |
| 526 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 527 | |
| 528 | status = ocfs2_journal_dirty(handle, *new_fe_bh); |
| 529 | if (status < 0) { |
| 530 | mlog_errno(status); |
| 531 | goto leave; |
| 532 | } |
| 533 | |
Joel Becker | b657c95 | 2008-11-13 14:49:11 -0800 | [diff] [blame^] | 534 | ocfs2_populate_inode(inode, fe, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 535 | ocfs2_inode_set_new(osb, inode); |
Sunil Mushran | c271c5c | 2006-12-05 17:56:35 -0800 | [diff] [blame] | 536 | if (!ocfs2_mount_local(osb)) { |
| 537 | status = ocfs2_create_new_inode_locks(inode); |
| 538 | if (status < 0) |
| 539 | mlog_errno(status); |
| 540 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 541 | |
| 542 | status = 0; /* error in ocfs2_create_new_inode_locks is not |
| 543 | * critical */ |
| 544 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 545 | leave: |
| 546 | if (status < 0) { |
| 547 | if (*new_fe_bh) { |
| 548 | brelse(*new_fe_bh); |
| 549 | *new_fe_bh = NULL; |
| 550 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 551 | } |
| 552 | |
| 553 | mlog_exit(status); |
| 554 | return status; |
| 555 | } |
| 556 | |
| 557 | static int ocfs2_mkdir(struct inode *dir, |
| 558 | struct dentry *dentry, |
| 559 | int mode) |
| 560 | { |
| 561 | int ret; |
| 562 | |
| 563 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, |
| 564 | dentry->d_name.len, dentry->d_name.name); |
| 565 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); |
| 566 | mlog_exit(ret); |
| 567 | |
| 568 | return ret; |
| 569 | } |
| 570 | |
| 571 | static int ocfs2_create(struct inode *dir, |
| 572 | struct dentry *dentry, |
| 573 | int mode, |
| 574 | struct nameidata *nd) |
| 575 | { |
| 576 | int ret; |
| 577 | |
| 578 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, |
| 579 | dentry->d_name.len, dentry->d_name.name); |
| 580 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); |
| 581 | mlog_exit(ret); |
| 582 | |
| 583 | return ret; |
| 584 | } |
| 585 | |
| 586 | static int ocfs2_link(struct dentry *old_dentry, |
| 587 | struct inode *dir, |
| 588 | struct dentry *dentry) |
| 589 | { |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 590 | handle_t *handle; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 591 | struct inode *inode = old_dentry->d_inode; |
| 592 | int err; |
| 593 | struct buffer_head *fe_bh = NULL; |
| 594 | struct buffer_head *parent_fe_bh = NULL; |
| 595 | struct buffer_head *de_bh = NULL; |
| 596 | struct ocfs2_dinode *fe = NULL; |
| 597 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
| 598 | |
| 599 | mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino, |
| 600 | old_dentry->d_name.len, old_dentry->d_name.name, |
| 601 | dentry->d_name.len, dentry->d_name.name); |
| 602 | |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 603 | if (S_ISDIR(inode->i_mode)) |
| 604 | return -EPERM; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 605 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 606 | err = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 607 | if (err < 0) { |
| 608 | if (err != -ENOENT) |
| 609 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 610 | return err; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 611 | } |
| 612 | |
Tiger Yang | 0f62de2 | 2006-08-31 20:39:47 -0700 | [diff] [blame] | 613 | if (!dir->i_nlink) { |
| 614 | err = -ENOENT; |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 615 | goto out; |
Tiger Yang | 0f62de2 | 2006-08-31 20:39:47 -0700 | [diff] [blame] | 616 | } |
| 617 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 618 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
| 619 | dentry->d_name.len); |
| 620 | if (err) |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 621 | goto out; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 622 | |
| 623 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, |
| 624 | dentry->d_name.name, |
| 625 | dentry->d_name.len, &de_bh); |
| 626 | if (err < 0) { |
| 627 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 628 | goto out; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 629 | } |
| 630 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 631 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 632 | if (err < 0) { |
| 633 | if (err != -ENOENT) |
| 634 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 635 | goto out; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 636 | } |
| 637 | |
| 638 | fe = (struct ocfs2_dinode *) fe_bh->b_data; |
| 639 | if (le16_to_cpu(fe->i_links_count) >= OCFS2_LINK_MAX) { |
| 640 | err = -EMLINK; |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 641 | goto out_unlock_inode; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 642 | } |
| 643 | |
Mark Fasheh | 65eff9c | 2006-10-09 17:26:22 -0700 | [diff] [blame] | 644 | handle = ocfs2_start_trans(osb, OCFS2_LINK_CREDITS); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 645 | if (IS_ERR(handle)) { |
| 646 | err = PTR_ERR(handle); |
| 647 | handle = NULL; |
| 648 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 649 | goto out_unlock_inode; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 650 | } |
| 651 | |
| 652 | err = ocfs2_journal_access(handle, inode, fe_bh, |
| 653 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 654 | if (err < 0) { |
| 655 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 656 | goto out_commit; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 657 | } |
| 658 | |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 659 | inc_nlink(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 660 | inode->i_ctime = CURRENT_TIME; |
| 661 | fe->i_links_count = cpu_to_le16(inode->i_nlink); |
| 662 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
| 663 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); |
| 664 | |
| 665 | err = ocfs2_journal_dirty(handle, fe_bh); |
| 666 | if (err < 0) { |
| 667 | le16_add_cpu(&fe->i_links_count, -1); |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 668 | drop_nlink(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 669 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 670 | goto out_commit; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 671 | } |
| 672 | |
| 673 | err = ocfs2_add_entry(handle, dentry, inode, |
| 674 | OCFS2_I(inode)->ip_blkno, |
| 675 | parent_fe_bh, de_bh); |
| 676 | if (err) { |
| 677 | le16_add_cpu(&fe->i_links_count, -1); |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 678 | drop_nlink(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 679 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 680 | goto out_commit; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 681 | } |
| 682 | |
Mark Fasheh | 0027dd5 | 2006-09-21 16:51:28 -0700 | [diff] [blame] | 683 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 684 | if (err) { |
| 685 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 686 | goto out_commit; |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 687 | } |
| 688 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 689 | atomic_inc(&inode->i_count); |
| 690 | dentry->d_op = &ocfs2_dentry_ops; |
| 691 | d_instantiate(dentry, inode); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 692 | |
| 693 | out_commit: |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 694 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 695 | out_unlock_inode: |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 696 | ocfs2_inode_unlock(inode, 1); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 697 | |
| 698 | out: |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 699 | ocfs2_inode_unlock(dir, 1); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 700 | |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 701 | brelse(de_bh); |
| 702 | brelse(fe_bh); |
| 703 | brelse(parent_fe_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 704 | |
| 705 | mlog_exit(err); |
| 706 | |
| 707 | return err; |
| 708 | } |
| 709 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 710 | /* |
| 711 | * Takes and drops an exclusive lock on the given dentry. This will |
| 712 | * force other nodes to drop it. |
| 713 | */ |
| 714 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) |
| 715 | { |
| 716 | int ret; |
| 717 | |
| 718 | ret = ocfs2_dentry_lock(dentry, 1); |
| 719 | if (ret) |
| 720 | mlog_errno(ret); |
| 721 | else |
| 722 | ocfs2_dentry_unlock(dentry, 1); |
| 723 | |
| 724 | return ret; |
| 725 | } |
| 726 | |
Mark Fasheh | 17ff785 | 2006-09-30 23:29:05 -0700 | [diff] [blame] | 727 | static inline int inode_is_unlinkable(struct inode *inode) |
| 728 | { |
| 729 | if (S_ISDIR(inode->i_mode)) { |
| 730 | if (inode->i_nlink == 2) |
| 731 | return 1; |
| 732 | return 0; |
| 733 | } |
| 734 | |
| 735 | if (inode->i_nlink == 1) |
| 736 | return 1; |
| 737 | return 0; |
| 738 | } |
| 739 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 740 | static int ocfs2_unlink(struct inode *dir, |
| 741 | struct dentry *dentry) |
| 742 | { |
| 743 | int status; |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 744 | int child_locked = 0; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 745 | struct inode *inode = dentry->d_inode; |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 746 | struct inode *orphan_dir = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 747 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
| 748 | u64 blkno; |
| 749 | struct ocfs2_dinode *fe = NULL; |
| 750 | struct buffer_head *fe_bh = NULL; |
| 751 | struct buffer_head *parent_node_bh = NULL; |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 752 | handle_t *handle = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 753 | struct ocfs2_dir_entry *dirent = NULL; |
| 754 | struct buffer_head *dirent_bh = NULL; |
| 755 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
| 756 | struct buffer_head *orphan_entry_bh = NULL; |
| 757 | |
| 758 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, |
| 759 | dentry->d_name.len, dentry->d_name.name); |
| 760 | |
| 761 | BUG_ON(dentry->d_parent->d_inode != dir); |
| 762 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 763 | 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] | 764 | |
| 765 | if (inode == osb->root_inode) { |
| 766 | mlog(0, "Cannot delete the root directory\n"); |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 767 | return -EPERM; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 768 | } |
| 769 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 770 | status = ocfs2_inode_lock(dir, &parent_node_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 771 | if (status < 0) { |
| 772 | if (status != -ENOENT) |
| 773 | mlog_errno(status); |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 774 | return status; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 775 | } |
| 776 | |
| 777 | status = ocfs2_find_files_on_disk(dentry->d_name.name, |
| 778 | dentry->d_name.len, &blkno, |
| 779 | dir, &dirent_bh, &dirent); |
| 780 | if (status < 0) { |
| 781 | if (status != -ENOENT) |
| 782 | mlog_errno(status); |
| 783 | goto leave; |
| 784 | } |
| 785 | |
| 786 | if (OCFS2_I(inode)->ip_blkno != blkno) { |
| 787 | status = -ENOENT; |
| 788 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 789 | mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n", |
| 790 | (unsigned long long)OCFS2_I(inode)->ip_blkno, |
| 791 | (unsigned long long)blkno, OCFS2_I(inode)->ip_flags); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 792 | goto leave; |
| 793 | } |
| 794 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 795 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 796 | if (status < 0) { |
| 797 | if (status != -ENOENT) |
| 798 | mlog_errno(status); |
| 799 | goto leave; |
| 800 | } |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 801 | child_locked = 1; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 802 | |
| 803 | if (S_ISDIR(inode->i_mode)) { |
| 804 | if (!ocfs2_empty_dir(inode)) { |
| 805 | status = -ENOTEMPTY; |
| 806 | goto leave; |
| 807 | } else if (inode->i_nlink != 2) { |
| 808 | status = -ENOTEMPTY; |
| 809 | goto leave; |
| 810 | } |
| 811 | } |
| 812 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 813 | status = ocfs2_remote_dentry_delete(dentry); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 814 | if (status < 0) { |
Mark Fasheh | 34d024f | 2007-09-24 15:56:19 -0700 | [diff] [blame] | 815 | /* This remote delete should succeed under all normal |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 816 | * circumstances. */ |
| 817 | mlog_errno(status); |
| 818 | goto leave; |
| 819 | } |
| 820 | |
Mark Fasheh | 17ff785 | 2006-09-30 23:29:05 -0700 | [diff] [blame] | 821 | if (inode_is_unlinkable(inode)) { |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 822 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, inode, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 823 | orphan_name, |
| 824 | &orphan_entry_bh); |
| 825 | if (status < 0) { |
| 826 | mlog_errno(status); |
| 827 | goto leave; |
| 828 | } |
| 829 | } |
| 830 | |
Mark Fasheh | 65eff9c | 2006-10-09 17:26:22 -0700 | [diff] [blame] | 831 | handle = ocfs2_start_trans(osb, OCFS2_UNLINK_CREDITS); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 832 | if (IS_ERR(handle)) { |
| 833 | status = PTR_ERR(handle); |
| 834 | handle = NULL; |
| 835 | mlog_errno(status); |
| 836 | goto leave; |
| 837 | } |
| 838 | |
| 839 | status = ocfs2_journal_access(handle, inode, fe_bh, |
| 840 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 841 | if (status < 0) { |
| 842 | mlog_errno(status); |
| 843 | goto leave; |
| 844 | } |
| 845 | |
| 846 | fe = (struct ocfs2_dinode *) fe_bh->b_data; |
| 847 | |
Mark Fasheh | 17ff785 | 2006-09-30 23:29:05 -0700 | [diff] [blame] | 848 | if (inode_is_unlinkable(inode)) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 849 | status = ocfs2_orphan_add(osb, handle, inode, fe, orphan_name, |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 850 | orphan_entry_bh, orphan_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 851 | if (status < 0) { |
| 852 | mlog_errno(status); |
| 853 | goto leave; |
| 854 | } |
| 855 | } |
| 856 | |
| 857 | /* delete the name from the parent dir */ |
| 858 | status = ocfs2_delete_entry(handle, dir, dirent, dirent_bh); |
| 859 | if (status < 0) { |
| 860 | mlog_errno(status); |
| 861 | goto leave; |
| 862 | } |
| 863 | |
Mark Fasheh | 17ff785 | 2006-09-30 23:29:05 -0700 | [diff] [blame] | 864 | if (S_ISDIR(inode->i_mode)) |
| 865 | drop_nlink(inode); |
| 866 | drop_nlink(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 867 | fe->i_links_count = cpu_to_le16(inode->i_nlink); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 868 | |
| 869 | status = ocfs2_journal_dirty(handle, fe_bh); |
| 870 | if (status < 0) { |
| 871 | mlog_errno(status); |
| 872 | goto leave; |
| 873 | } |
| 874 | |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 875 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
| 876 | if (S_ISDIR(inode->i_mode)) |
Mark Fasheh | 17ff785 | 2006-09-30 23:29:05 -0700 | [diff] [blame] | 877 | drop_nlink(dir); |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 878 | |
| 879 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); |
| 880 | if (status < 0) { |
| 881 | mlog_errno(status); |
| 882 | if (S_ISDIR(inode->i_mode)) |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 883 | inc_nlink(dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 884 | } |
| 885 | |
| 886 | leave: |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 887 | if (handle) |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 888 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 889 | |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 890 | if (child_locked) |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 891 | ocfs2_inode_unlock(inode, 1); |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 892 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 893 | ocfs2_inode_unlock(dir, 1); |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 894 | |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 895 | if (orphan_dir) { |
| 896 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 897 | ocfs2_inode_unlock(orphan_dir, 1); |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 898 | mutex_unlock(&orphan_dir->i_mutex); |
| 899 | iput(orphan_dir); |
| 900 | } |
| 901 | |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 902 | brelse(fe_bh); |
| 903 | brelse(dirent_bh); |
| 904 | brelse(parent_node_bh); |
| 905 | brelse(orphan_entry_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 906 | |
| 907 | mlog_exit(status); |
| 908 | |
| 909 | return status; |
| 910 | } |
| 911 | |
| 912 | /* |
| 913 | * The only place this should be used is rename! |
| 914 | * if they have the same id, then the 1st one is the only one locked. |
| 915 | */ |
| 916 | static int ocfs2_double_lock(struct ocfs2_super *osb, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 917 | struct buffer_head **bh1, |
| 918 | struct inode *inode1, |
| 919 | struct buffer_head **bh2, |
| 920 | struct inode *inode2) |
| 921 | { |
| 922 | int status; |
| 923 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); |
| 924 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); |
| 925 | struct buffer_head **tmpbh; |
| 926 | struct inode *tmpinode; |
| 927 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 928 | mlog_entry("(inode1 = %llu, inode2 = %llu)\n", |
| 929 | (unsigned long long)oi1->ip_blkno, |
| 930 | (unsigned long long)oi2->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 931 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 932 | if (*bh1) |
| 933 | *bh1 = NULL; |
| 934 | if (*bh2) |
| 935 | *bh2 = NULL; |
| 936 | |
| 937 | /* we always want to lock the one with the lower lockid first. */ |
| 938 | if (oi1->ip_blkno != oi2->ip_blkno) { |
| 939 | if (oi1->ip_blkno < oi2->ip_blkno) { |
| 940 | /* switch id1 and id2 around */ |
| 941 | mlog(0, "switching them around...\n"); |
| 942 | tmpbh = bh2; |
| 943 | bh2 = bh1; |
| 944 | bh1 = tmpbh; |
| 945 | |
| 946 | tmpinode = inode2; |
| 947 | inode2 = inode1; |
| 948 | inode1 = tmpinode; |
| 949 | } |
| 950 | /* lock id2 */ |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 951 | status = ocfs2_inode_lock(inode2, bh2, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 952 | if (status < 0) { |
| 953 | if (status != -ENOENT) |
| 954 | mlog_errno(status); |
| 955 | goto bail; |
| 956 | } |
| 957 | } |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 958 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 959 | /* lock id1 */ |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 960 | status = ocfs2_inode_lock(inode1, bh1, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 961 | if (status < 0) { |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 962 | /* |
| 963 | * An error return must mean that no cluster locks |
| 964 | * were held on function exit. |
| 965 | */ |
| 966 | if (oi1->ip_blkno != oi2->ip_blkno) |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 967 | ocfs2_inode_unlock(inode2, 1); |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 968 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 969 | if (status != -ENOENT) |
| 970 | mlog_errno(status); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 971 | } |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 972 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 973 | bail: |
| 974 | mlog_exit(status); |
| 975 | return status; |
| 976 | } |
| 977 | |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 978 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
| 979 | { |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 980 | ocfs2_inode_unlock(inode1, 1); |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 981 | |
| 982 | if (inode1 != inode2) |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 983 | ocfs2_inode_unlock(inode2, 1); |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 984 | } |
| 985 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 986 | static int ocfs2_rename(struct inode *old_dir, |
| 987 | struct dentry *old_dentry, |
| 988 | struct inode *new_dir, |
| 989 | struct dentry *new_dentry) |
| 990 | { |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 991 | int status = 0, rename_lock = 0, parents_locked = 0; |
| 992 | int old_child_locked = 0, new_child_locked = 0; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 993 | struct inode *old_inode = old_dentry->d_inode; |
| 994 | struct inode *new_inode = new_dentry->d_inode; |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 995 | struct inode *orphan_dir = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 996 | struct ocfs2_dinode *newfe = NULL; |
| 997 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
| 998 | struct buffer_head *orphan_entry_bh = NULL; |
| 999 | struct buffer_head *newfe_bh = NULL; |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1000 | struct buffer_head *old_inode_bh = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1001 | struct buffer_head *insert_entry_bh = NULL; |
| 1002 | struct ocfs2_super *osb = NULL; |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 1003 | u64 newfe_blkno, old_de_ino; |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 1004 | handle_t *handle = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1005 | struct buffer_head *old_dir_bh = NULL; |
| 1006 | struct buffer_head *new_dir_bh = NULL; |
Mark Fasheh | 38760e2 | 2007-09-11 17:21:56 -0700 | [diff] [blame] | 1007 | struct ocfs2_dir_entry *old_inode_dot_dot_de = NULL, *old_de = NULL, |
| 1008 | *new_de = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1009 | struct buffer_head *new_de_bh = NULL, *old_de_bh = NULL; // bhs for above |
| 1010 | struct buffer_head *old_inode_de_bh = NULL; // if old_dentry is a dir, |
| 1011 | // this is the 1st dirent bh |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1012 | nlink_t old_dir_nlink = old_dir->i_nlink; |
Sunil Mushran | 480214d | 2007-08-06 15:11:56 -0700 | [diff] [blame] | 1013 | struct ocfs2_dinode *old_di; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1014 | |
| 1015 | /* At some point it might be nice to break this function up a |
| 1016 | * bit. */ |
| 1017 | |
| 1018 | mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n", |
| 1019 | old_dir, old_dentry, new_dir, new_dentry, |
| 1020 | old_dentry->d_name.len, old_dentry->d_name.name, |
| 1021 | new_dentry->d_name.len, new_dentry->d_name.name); |
| 1022 | |
| 1023 | osb = OCFS2_SB(old_dir->i_sb); |
| 1024 | |
| 1025 | if (new_inode) { |
| 1026 | if (!igrab(new_inode)) |
| 1027 | BUG(); |
| 1028 | } |
| 1029 | |
Uwe Kleine-König | 1b3c371 | 2007-02-17 19:23:03 +0100 | [diff] [blame] | 1030 | /* Assume a directory hierarchy thusly: |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1031 | * a/b/c |
| 1032 | * a/d |
| 1033 | * a,b,c, and d are all directories. |
| 1034 | * |
| 1035 | * from cwd of 'a' on both nodes: |
| 1036 | * node1: mv b/c d |
| 1037 | * node2: mv d b/c |
| 1038 | * |
| 1039 | * And that's why, just like the VFS, we need a file system |
| 1040 | * rename lock. */ |
Jan Kara | 5dabd69 | 2008-02-21 18:00:00 +0100 | [diff] [blame] | 1041 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1042 | status = ocfs2_rename_lock(osb); |
| 1043 | if (status < 0) { |
| 1044 | mlog_errno(status); |
| 1045 | goto bail; |
| 1046 | } |
| 1047 | rename_lock = 1; |
| 1048 | } |
| 1049 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1050 | /* 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] | 1051 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
| 1052 | &new_dir_bh, new_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1053 | if (status < 0) { |
| 1054 | mlog_errno(status); |
| 1055 | goto bail; |
| 1056 | } |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1057 | parents_locked = 1; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1058 | |
| 1059 | /* make sure both dirs have bhs |
| 1060 | * get an extra ref on old_dir_bh if old==new */ |
| 1061 | if (!new_dir_bh) { |
| 1062 | if (old_dir_bh) { |
| 1063 | new_dir_bh = old_dir_bh; |
| 1064 | get_bh(new_dir_bh); |
| 1065 | } else { |
| 1066 | mlog(ML_ERROR, "no old_dir_bh!\n"); |
| 1067 | status = -EIO; |
| 1068 | goto bail; |
| 1069 | } |
| 1070 | } |
| 1071 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1072 | /* |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1073 | * Aside from allowing a meta data update, the locking here |
Mark Fasheh | 34d024f | 2007-09-24 15:56:19 -0700 | [diff] [blame] | 1074 | * also ensures that the downconvert thread on other nodes |
| 1075 | * won't have to concurrently downconvert the inode and the |
| 1076 | * dentry locks. |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1077 | */ |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1078 | status = ocfs2_inode_lock(old_inode, &old_inode_bh, 1); |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1079 | if (status < 0) { |
| 1080 | if (status != -ENOENT) |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1081 | mlog_errno(status); |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1082 | goto bail; |
| 1083 | } |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1084 | old_child_locked = 1; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1085 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1086 | status = ocfs2_remote_dentry_delete(old_dentry); |
| 1087 | if (status < 0) { |
| 1088 | mlog_errno(status); |
| 1089 | goto bail; |
| 1090 | } |
| 1091 | |
| 1092 | if (S_ISDIR(old_inode->i_mode)) { |
Mark Fasheh | 38760e2 | 2007-09-11 17:21:56 -0700 | [diff] [blame] | 1093 | u64 old_inode_parent; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1094 | |
Mark Fasheh | 38760e2 | 2007-09-11 17:21:56 -0700 | [diff] [blame] | 1095 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
| 1096 | old_inode, &old_inode_de_bh, |
| 1097 | &old_inode_dot_dot_de); |
| 1098 | if (status) { |
| 1099 | status = -EIO; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1100 | goto bail; |
Mark Fasheh | 38760e2 | 2007-09-11 17:21:56 -0700 | [diff] [blame] | 1101 | } |
| 1102 | |
| 1103 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
| 1104 | status = -EIO; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1105 | goto bail; |
Mark Fasheh | 38760e2 | 2007-09-11 17:21:56 -0700 | [diff] [blame] | 1106 | } |
| 1107 | |
| 1108 | if (!new_inode && new_dir != old_dir && |
| 1109 | new_dir->i_nlink >= OCFS2_LINK_MAX) { |
| 1110 | status = -EMLINK; |
| 1111 | goto bail; |
| 1112 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1113 | } |
| 1114 | |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 1115 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
| 1116 | old_dentry->d_name.len, |
| 1117 | &old_de_ino); |
| 1118 | if (status) { |
| 1119 | status = -ENOENT; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1120 | goto bail; |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 1121 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1122 | |
| 1123 | /* |
| 1124 | * Check for inode number is _not_ due to possible IO errors. |
| 1125 | * We might rmdir the source, keep it as pwd of some process |
| 1126 | * and merrily kill the link to whatever was created under the |
| 1127 | * same name. Goodbye sticky bit ;-< |
| 1128 | */ |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 1129 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
| 1130 | status = -ENOENT; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1131 | goto bail; |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 1132 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1133 | |
| 1134 | /* check if the target already exists (in which case we need |
| 1135 | * to delete it */ |
| 1136 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, |
| 1137 | new_dentry->d_name.len, |
| 1138 | &newfe_blkno, new_dir, &new_de_bh, |
| 1139 | &new_de); |
| 1140 | /* The only error we allow here is -ENOENT because the new |
| 1141 | * file not existing is perfectly valid. */ |
| 1142 | if ((status < 0) && (status != -ENOENT)) { |
| 1143 | /* If we cannot find the file specified we should just */ |
| 1144 | /* return the error... */ |
| 1145 | mlog_errno(status); |
| 1146 | goto bail; |
| 1147 | } |
| 1148 | |
Srinivas Eeda | e325a88 | 2007-10-31 16:49:43 -0700 | [diff] [blame] | 1149 | if (!new_de && new_inode) { |
| 1150 | /* |
| 1151 | * Target was unlinked by another node while we were |
| 1152 | * waiting to get to ocfs2_rename(). There isn't |
| 1153 | * anything we can do here to help the situation, so |
| 1154 | * bubble up the appropriate error. |
| 1155 | */ |
| 1156 | status = -ENOENT; |
| 1157 | goto bail; |
| 1158 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1159 | |
| 1160 | /* In case we need to overwrite an existing file, we blow it |
| 1161 | * away first */ |
| 1162 | if (new_de) { |
| 1163 | /* VFS didn't think there existed an inode here, but |
| 1164 | * someone else in the cluster must have raced our |
| 1165 | * rename to create one. Today we error cleanly, in |
| 1166 | * the future we should consider calling iget to build |
| 1167 | * a new struct inode for this entry. */ |
| 1168 | if (!new_inode) { |
| 1169 | status = -EACCES; |
| 1170 | |
| 1171 | mlog(0, "We found an inode for name %.*s but VFS " |
| 1172 | "didn't give us one.\n", new_dentry->d_name.len, |
| 1173 | new_dentry->d_name.name); |
| 1174 | goto bail; |
| 1175 | } |
| 1176 | |
| 1177 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { |
| 1178 | status = -EACCES; |
| 1179 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1180 | mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n", |
| 1181 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
| 1182 | (unsigned long long)newfe_blkno, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1183 | OCFS2_I(new_inode)->ip_flags); |
| 1184 | goto bail; |
| 1185 | } |
| 1186 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1187 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1188 | if (status < 0) { |
| 1189 | if (status != -ENOENT) |
| 1190 | mlog_errno(status); |
| 1191 | goto bail; |
| 1192 | } |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1193 | new_child_locked = 1; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1194 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1195 | status = ocfs2_remote_dentry_delete(new_dentry); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1196 | if (status < 0) { |
| 1197 | mlog_errno(status); |
| 1198 | goto bail; |
| 1199 | } |
| 1200 | |
| 1201 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; |
| 1202 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1203 | mlog(0, "aha rename over existing... new_de=%p new_blkno=%llu " |
| 1204 | "newfebh=%p bhblocknr=%llu\n", new_de, |
| 1205 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1206 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
| 1207 | |
| 1208 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1209 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1210 | new_inode, |
| 1211 | orphan_name, |
| 1212 | &orphan_entry_bh); |
| 1213 | if (status < 0) { |
| 1214 | mlog_errno(status); |
| 1215 | goto bail; |
| 1216 | } |
| 1217 | } |
| 1218 | } else { |
| 1219 | BUG_ON(new_dentry->d_parent->d_inode != new_dir); |
| 1220 | |
| 1221 | status = ocfs2_check_dir_for_entry(new_dir, |
| 1222 | new_dentry->d_name.name, |
| 1223 | new_dentry->d_name.len); |
| 1224 | if (status) |
| 1225 | goto bail; |
| 1226 | |
| 1227 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, |
| 1228 | new_dentry->d_name.name, |
| 1229 | new_dentry->d_name.len, |
| 1230 | &insert_entry_bh); |
| 1231 | if (status < 0) { |
| 1232 | mlog_errno(status); |
| 1233 | goto bail; |
| 1234 | } |
| 1235 | } |
| 1236 | |
Mark Fasheh | 65eff9c | 2006-10-09 17:26:22 -0700 | [diff] [blame] | 1237 | handle = ocfs2_start_trans(osb, OCFS2_RENAME_CREDITS); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1238 | if (IS_ERR(handle)) { |
| 1239 | status = PTR_ERR(handle); |
| 1240 | handle = NULL; |
| 1241 | mlog_errno(status); |
| 1242 | goto bail; |
| 1243 | } |
| 1244 | |
| 1245 | if (new_de) { |
| 1246 | if (S_ISDIR(new_inode->i_mode)) { |
| 1247 | if (!ocfs2_empty_dir(new_inode) || |
| 1248 | new_inode->i_nlink != 2) { |
| 1249 | status = -ENOTEMPTY; |
| 1250 | goto bail; |
| 1251 | } |
| 1252 | } |
| 1253 | status = ocfs2_journal_access(handle, new_inode, newfe_bh, |
| 1254 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 1255 | if (status < 0) { |
| 1256 | mlog_errno(status); |
| 1257 | goto bail; |
| 1258 | } |
| 1259 | |
| 1260 | if (S_ISDIR(new_inode->i_mode) || |
| 1261 | (newfe->i_links_count == cpu_to_le16(1))){ |
| 1262 | status = ocfs2_orphan_add(osb, handle, new_inode, |
| 1263 | newfe, orphan_name, |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1264 | orphan_entry_bh, orphan_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1265 | if (status < 0) { |
| 1266 | mlog_errno(status); |
| 1267 | goto bail; |
| 1268 | } |
| 1269 | } |
| 1270 | |
| 1271 | /* change the dirent to point to the correct inode */ |
Mark Fasheh | 38760e2 | 2007-09-11 17:21:56 -0700 | [diff] [blame] | 1272 | status = ocfs2_update_entry(new_dir, handle, new_de_bh, |
| 1273 | new_de, old_inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1274 | if (status < 0) { |
| 1275 | mlog_errno(status); |
| 1276 | goto bail; |
| 1277 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1278 | new_dir->i_version++; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1279 | |
| 1280 | if (S_ISDIR(new_inode->i_mode)) |
| 1281 | newfe->i_links_count = 0; |
| 1282 | else |
| 1283 | le16_add_cpu(&newfe->i_links_count, -1); |
| 1284 | |
| 1285 | status = ocfs2_journal_dirty(handle, newfe_bh); |
| 1286 | if (status < 0) { |
| 1287 | mlog_errno(status); |
| 1288 | goto bail; |
| 1289 | } |
| 1290 | } else { |
| 1291 | /* if the name was not found in new_dir, add it now */ |
| 1292 | status = ocfs2_add_entry(handle, new_dentry, old_inode, |
| 1293 | OCFS2_I(old_inode)->ip_blkno, |
| 1294 | new_dir_bh, insert_entry_bh); |
| 1295 | } |
| 1296 | |
| 1297 | old_inode->i_ctime = CURRENT_TIME; |
| 1298 | mark_inode_dirty(old_inode); |
Sunil Mushran | 480214d | 2007-08-06 15:11:56 -0700 | [diff] [blame] | 1299 | |
| 1300 | status = ocfs2_journal_access(handle, old_inode, old_inode_bh, |
| 1301 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 1302 | if (status >= 0) { |
| 1303 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; |
| 1304 | |
| 1305 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); |
| 1306 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); |
| 1307 | |
| 1308 | status = ocfs2_journal_dirty(handle, old_inode_bh); |
| 1309 | if (status < 0) |
| 1310 | mlog_errno(status); |
| 1311 | } else |
| 1312 | mlog_errno(status); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1313 | |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 1314 | /* |
| 1315 | * Now that the name has been added to new_dir, remove the old name. |
| 1316 | * |
| 1317 | * We don't keep any directory entry context around until now |
| 1318 | * because the insert might have changed the type of directory |
| 1319 | * we're dealing with. |
| 1320 | */ |
| 1321 | old_de_bh = ocfs2_find_entry(old_dentry->d_name.name, |
| 1322 | old_dentry->d_name.len, |
| 1323 | old_dir, &old_de); |
| 1324 | if (!old_de_bh) { |
| 1325 | status = -EIO; |
| 1326 | goto bail; |
| 1327 | } |
| 1328 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1329 | status = ocfs2_delete_entry(handle, old_dir, old_de, old_de_bh); |
| 1330 | if (status < 0) { |
| 1331 | mlog_errno(status); |
| 1332 | goto bail; |
| 1333 | } |
| 1334 | |
| 1335 | if (new_inode) { |
| 1336 | new_inode->i_nlink--; |
| 1337 | new_inode->i_ctime = CURRENT_TIME; |
| 1338 | } |
| 1339 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; |
| 1340 | if (old_inode_de_bh) { |
Mark Fasheh | 38760e2 | 2007-09-11 17:21:56 -0700 | [diff] [blame] | 1341 | status = ocfs2_update_entry(old_inode, handle, old_inode_de_bh, |
| 1342 | old_inode_dot_dot_de, new_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1343 | old_dir->i_nlink--; |
| 1344 | if (new_inode) { |
| 1345 | new_inode->i_nlink--; |
| 1346 | } else { |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 1347 | inc_nlink(new_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1348 | mark_inode_dirty(new_dir); |
| 1349 | } |
| 1350 | } |
| 1351 | mark_inode_dirty(old_dir); |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1352 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
| 1353 | if (new_inode) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1354 | mark_inode_dirty(new_inode); |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1355 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
| 1356 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1357 | |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1358 | if (old_dir != new_dir) { |
| 1359 | /* Keep the same times on both directories.*/ |
| 1360 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; |
| 1361 | |
| 1362 | /* |
| 1363 | * This will also pick up the i_nlink change from the |
| 1364 | * block above. |
| 1365 | */ |
| 1366 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); |
| 1367 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1368 | |
| 1369 | if (old_dir_nlink != old_dir->i_nlink) { |
| 1370 | if (!old_dir_bh) { |
| 1371 | mlog(ML_ERROR, "need to change nlink for old dir " |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1372 | "%llu from %d to %d but bh is NULL!\n", |
| 1373 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, |
| 1374 | (int)old_dir_nlink, old_dir->i_nlink); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1375 | } else { |
| 1376 | struct ocfs2_dinode *fe; |
| 1377 | status = ocfs2_journal_access(handle, old_dir, |
| 1378 | old_dir_bh, |
| 1379 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 1380 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
| 1381 | fe->i_links_count = cpu_to_le16(old_dir->i_nlink); |
| 1382 | status = ocfs2_journal_dirty(handle, old_dir_bh); |
| 1383 | } |
| 1384 | } |
| 1385 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1386 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1387 | status = 0; |
| 1388 | bail: |
| 1389 | if (rename_lock) |
| 1390 | ocfs2_rename_unlock(osb); |
| 1391 | |
| 1392 | if (handle) |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 1393 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1394 | |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1395 | if (parents_locked) |
| 1396 | ocfs2_double_unlock(old_dir, new_dir); |
| 1397 | |
| 1398 | if (old_child_locked) |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1399 | ocfs2_inode_unlock(old_inode, 1); |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1400 | |
| 1401 | if (new_child_locked) |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1402 | ocfs2_inode_unlock(new_inode, 1); |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1403 | |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1404 | if (orphan_dir) { |
| 1405 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1406 | ocfs2_inode_unlock(orphan_dir, 1); |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1407 | mutex_unlock(&orphan_dir->i_mutex); |
| 1408 | iput(orphan_dir); |
| 1409 | } |
| 1410 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1411 | if (new_inode) |
| 1412 | sync_mapping_buffers(old_inode->i_mapping); |
| 1413 | |
| 1414 | if (new_inode) |
| 1415 | iput(new_inode); |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 1416 | brelse(newfe_bh); |
| 1417 | brelse(old_inode_bh); |
| 1418 | brelse(old_dir_bh); |
| 1419 | brelse(new_dir_bh); |
| 1420 | brelse(new_de_bh); |
| 1421 | brelse(old_de_bh); |
| 1422 | brelse(old_inode_de_bh); |
| 1423 | brelse(orphan_entry_bh); |
| 1424 | brelse(insert_entry_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1425 | |
| 1426 | mlog_exit(status); |
| 1427 | |
| 1428 | return status; |
| 1429 | } |
| 1430 | |
| 1431 | /* |
| 1432 | * we expect i_size = strlen(symname). Copy symname into the file |
| 1433 | * data, including the null terminator. |
| 1434 | */ |
| 1435 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 1436 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1437 | struct inode *inode, |
| 1438 | const char *symname) |
| 1439 | { |
| 1440 | struct buffer_head **bhs = NULL; |
| 1441 | const char *c; |
| 1442 | struct super_block *sb = osb->sb; |
Mark Fasheh | 4f902c3 | 2007-03-09 16:26:50 -0800 | [diff] [blame] | 1443 | u64 p_blkno, p_blocks; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1444 | int virtual, blocks, status, i, bytes_left; |
| 1445 | |
| 1446 | bytes_left = i_size_read(inode) + 1; |
| 1447 | /* we can't trust i_blocks because we're actually going to |
| 1448 | * write i_size + 1 bytes. */ |
| 1449 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; |
| 1450 | |
Andrew Morton | 5515eff | 2006-03-26 01:37:53 -0800 | [diff] [blame] | 1451 | mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n", |
| 1452 | (unsigned long long)inode->i_blocks, |
| 1453 | i_size_read(inode), blocks); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1454 | |
| 1455 | /* Sanity check -- make sure we're going to fit. */ |
| 1456 | if (bytes_left > |
| 1457 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { |
| 1458 | status = -EIO; |
| 1459 | mlog_errno(status); |
| 1460 | goto bail; |
| 1461 | } |
| 1462 | |
| 1463 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); |
| 1464 | if (!bhs) { |
| 1465 | status = -ENOMEM; |
| 1466 | mlog_errno(status); |
| 1467 | goto bail; |
| 1468 | } |
| 1469 | |
Mark Fasheh | 49cb8d2 | 2007-03-09 16:21:46 -0800 | [diff] [blame] | 1470 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
| 1471 | NULL); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1472 | if (status < 0) { |
| 1473 | mlog_errno(status); |
| 1474 | goto bail; |
| 1475 | } |
| 1476 | |
| 1477 | /* links can never be larger than one cluster so we know this |
| 1478 | * is all going to be contiguous, but do a sanity check |
| 1479 | * anyway. */ |
| 1480 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { |
| 1481 | status = -EIO; |
| 1482 | mlog_errno(status); |
| 1483 | goto bail; |
| 1484 | } |
| 1485 | |
| 1486 | virtual = 0; |
| 1487 | while(bytes_left > 0) { |
| 1488 | c = &symname[virtual * sb->s_blocksize]; |
| 1489 | |
| 1490 | bhs[virtual] = sb_getblk(sb, p_blkno); |
| 1491 | if (!bhs[virtual]) { |
| 1492 | status = -ENOMEM; |
| 1493 | mlog_errno(status); |
| 1494 | goto bail; |
| 1495 | } |
| 1496 | ocfs2_set_new_buffer_uptodate(inode, bhs[virtual]); |
| 1497 | |
| 1498 | status = ocfs2_journal_access(handle, inode, bhs[virtual], |
| 1499 | OCFS2_JOURNAL_ACCESS_CREATE); |
| 1500 | if (status < 0) { |
| 1501 | mlog_errno(status); |
| 1502 | goto bail; |
| 1503 | } |
| 1504 | |
| 1505 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); |
| 1506 | |
| 1507 | memcpy(bhs[virtual]->b_data, c, |
| 1508 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : |
| 1509 | bytes_left); |
| 1510 | |
| 1511 | status = ocfs2_journal_dirty(handle, bhs[virtual]); |
| 1512 | if (status < 0) { |
| 1513 | mlog_errno(status); |
| 1514 | goto bail; |
| 1515 | } |
| 1516 | |
| 1517 | virtual++; |
| 1518 | p_blkno++; |
| 1519 | bytes_left -= sb->s_blocksize; |
| 1520 | } |
| 1521 | |
| 1522 | status = 0; |
| 1523 | bail: |
| 1524 | |
| 1525 | if (bhs) { |
| 1526 | for(i = 0; i < blocks; i++) |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 1527 | brelse(bhs[i]); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1528 | kfree(bhs); |
| 1529 | } |
| 1530 | |
| 1531 | mlog_exit(status); |
| 1532 | return status; |
| 1533 | } |
| 1534 | |
| 1535 | static int ocfs2_symlink(struct inode *dir, |
| 1536 | struct dentry *dentry, |
| 1537 | const char *symname) |
| 1538 | { |
| 1539 | int status, l, credits; |
| 1540 | u64 newsize; |
| 1541 | struct ocfs2_super *osb = NULL; |
| 1542 | struct inode *inode = NULL; |
| 1543 | struct super_block *sb; |
| 1544 | struct buffer_head *new_fe_bh = NULL; |
| 1545 | struct buffer_head *de_bh = NULL; |
| 1546 | struct buffer_head *parent_fe_bh = NULL; |
| 1547 | struct ocfs2_dinode *fe = NULL; |
| 1548 | struct ocfs2_dinode *dirfe; |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 1549 | handle_t *handle = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1550 | struct ocfs2_alloc_context *inode_ac = NULL; |
| 1551 | struct ocfs2_alloc_context *data_ac = NULL; |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 1552 | struct ocfs2_alloc_context *xattr_ac = NULL; |
| 1553 | int want_clusters = 0; |
| 1554 | int xattr_credits = 0; |
| 1555 | struct ocfs2_security_xattr_info si = { |
| 1556 | .enable = 1, |
| 1557 | }; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1558 | |
| 1559 | mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir, |
| 1560 | dentry, symname, dentry->d_name.len, dentry->d_name.name); |
| 1561 | |
| 1562 | sb = dir->i_sb; |
| 1563 | osb = OCFS2_SB(sb); |
| 1564 | |
| 1565 | l = strlen(symname) + 1; |
| 1566 | |
| 1567 | credits = ocfs2_calc_symlink_credits(sb); |
| 1568 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1569 | /* lock the parent directory */ |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1570 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1571 | if (status < 0) { |
| 1572 | if (status != -ENOENT) |
| 1573 | mlog_errno(status); |
Mark Fasheh | 6d8fc40 | 2006-10-06 11:54:33 -0700 | [diff] [blame] | 1574 | return status; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1575 | } |
| 1576 | |
| 1577 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
| 1578 | if (!dirfe->i_links_count) { |
| 1579 | /* can't make a file in a deleted directory. */ |
| 1580 | status = -ENOENT; |
| 1581 | goto bail; |
| 1582 | } |
| 1583 | |
| 1584 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
| 1585 | dentry->d_name.len); |
| 1586 | if (status) |
| 1587 | goto bail; |
| 1588 | |
| 1589 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, |
| 1590 | dentry->d_name.name, |
| 1591 | dentry->d_name.len, &de_bh); |
| 1592 | if (status < 0) { |
| 1593 | mlog_errno(status); |
| 1594 | goto bail; |
| 1595 | } |
| 1596 | |
Mark Fasheh | da5cbf2 | 2006-10-06 18:34:35 -0700 | [diff] [blame] | 1597 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1598 | if (status < 0) { |
| 1599 | if (status != -ENOSPC) |
| 1600 | mlog_errno(status); |
| 1601 | goto bail; |
| 1602 | } |
| 1603 | |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 1604 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
| 1605 | if (!inode) { |
| 1606 | status = -ENOMEM; |
| 1607 | mlog_errno(status); |
| 1608 | goto bail; |
| 1609 | } |
| 1610 | |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 1611 | /* get security xattr */ |
| 1612 | status = ocfs2_init_security_get(inode, dir, &si); |
| 1613 | if (status) { |
| 1614 | if (status == -EOPNOTSUPP) |
| 1615 | si.enable = 0; |
| 1616 | else { |
| 1617 | mlog_errno(status); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1618 | goto bail; |
| 1619 | } |
| 1620 | } |
| 1621 | |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 1622 | /* calculate meta data/clusters for setting security xattr */ |
| 1623 | if (si.enable) { |
| 1624 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, |
| 1625 | &xattr_credits, &xattr_ac); |
| 1626 | if (status < 0) { |
| 1627 | mlog_errno(status); |
| 1628 | goto bail; |
| 1629 | } |
| 1630 | } |
| 1631 | |
| 1632 | /* don't reserve bitmap space for fast symlinks. */ |
| 1633 | if (l > ocfs2_fast_symlink_chars(sb)) |
| 1634 | want_clusters += 1; |
| 1635 | |
| 1636 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
| 1637 | if (status < 0) { |
| 1638 | if (status != -ENOSPC) |
| 1639 | mlog_errno(status); |
| 1640 | goto bail; |
| 1641 | } |
| 1642 | |
| 1643 | handle = ocfs2_start_trans(osb, credits + xattr_credits); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1644 | if (IS_ERR(handle)) { |
| 1645 | status = PTR_ERR(handle); |
| 1646 | handle = NULL; |
| 1647 | mlog_errno(status); |
| 1648 | goto bail; |
| 1649 | } |
| 1650 | |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 1651 | status = ocfs2_mknod_locked(osb, dir, inode, dentry, |
| 1652 | 0, &new_fe_bh, parent_fe_bh, handle, |
| 1653 | inode_ac); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1654 | if (status < 0) { |
| 1655 | mlog_errno(status); |
| 1656 | goto bail; |
| 1657 | } |
| 1658 | |
| 1659 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; |
| 1660 | inode->i_rdev = 0; |
| 1661 | newsize = l - 1; |
| 1662 | if (l > ocfs2_fast_symlink_chars(sb)) { |
Mark Fasheh | dcd0538 | 2007-01-16 11:32:23 -0800 | [diff] [blame] | 1663 | u32 offset = 0; |
| 1664 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1665 | inode->i_op = &ocfs2_symlink_inode_operations; |
Tao Ma | 0eb8d47 | 2008-08-18 17:38:45 +0800 | [diff] [blame] | 1666 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
| 1667 | new_fe_bh, |
| 1668 | handle, data_ac, NULL, |
| 1669 | NULL); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1670 | if (status < 0) { |
| 1671 | if (status != -ENOSPC && status != -EINTR) { |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1672 | mlog(ML_ERROR, |
| 1673 | "Failed to extend file to %llu\n", |
| 1674 | (unsigned long long)newsize); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1675 | mlog_errno(status); |
| 1676 | status = -ENOSPC; |
| 1677 | } |
| 1678 | goto bail; |
| 1679 | } |
| 1680 | i_size_write(inode, newsize); |
Mark Fasheh | 8110b07 | 2007-03-22 16:53:23 -0700 | [diff] [blame] | 1681 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1682 | } else { |
| 1683 | inode->i_op = &ocfs2_fast_symlink_inode_operations; |
| 1684 | memcpy((char *) fe->id2.i_symlink, symname, l); |
| 1685 | i_size_write(inode, newsize); |
| 1686 | inode->i_blocks = 0; |
| 1687 | } |
| 1688 | |
| 1689 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); |
| 1690 | if (status < 0) { |
| 1691 | mlog_errno(status); |
| 1692 | goto bail; |
| 1693 | } |
| 1694 | |
| 1695 | if (!ocfs2_inode_is_fast_symlink(inode)) { |
| 1696 | status = ocfs2_create_symlink_data(osb, handle, inode, |
| 1697 | symname); |
| 1698 | if (status < 0) { |
| 1699 | mlog_errno(status); |
| 1700 | goto bail; |
| 1701 | } |
| 1702 | } |
| 1703 | |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 1704 | if (si.enable) { |
| 1705 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, |
| 1706 | xattr_ac, data_ac); |
| 1707 | if (status < 0) { |
| 1708 | mlog_errno(status); |
| 1709 | goto bail; |
| 1710 | } |
| 1711 | } |
| 1712 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1713 | status = ocfs2_add_entry(handle, dentry, inode, |
| 1714 | le64_to_cpu(fe->i_blkno), parent_fe_bh, |
| 1715 | de_bh); |
| 1716 | if (status < 0) { |
| 1717 | mlog_errno(status); |
| 1718 | goto bail; |
| 1719 | } |
| 1720 | |
Mark Fasheh | 0027dd5 | 2006-09-21 16:51:28 -0700 | [diff] [blame] | 1721 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1722 | if (status) { |
| 1723 | mlog_errno(status); |
| 1724 | goto bail; |
| 1725 | } |
| 1726 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1727 | insert_inode_hash(inode); |
| 1728 | dentry->d_op = &ocfs2_dentry_ops; |
| 1729 | d_instantiate(dentry, inode); |
| 1730 | bail: |
| 1731 | if (handle) |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 1732 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | 6d8fc40 | 2006-10-06 11:54:33 -0700 | [diff] [blame] | 1733 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1734 | ocfs2_inode_unlock(dir, 1); |
Mark Fasheh | 6d8fc40 | 2006-10-06 11:54:33 -0700 | [diff] [blame] | 1735 | |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 1736 | brelse(new_fe_bh); |
| 1737 | brelse(parent_fe_bh); |
| 1738 | brelse(de_bh); |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 1739 | kfree(si.name); |
| 1740 | kfree(si.value); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1741 | if (inode_ac) |
| 1742 | ocfs2_free_alloc_context(inode_ac); |
| 1743 | if (data_ac) |
| 1744 | ocfs2_free_alloc_context(data_ac); |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 1745 | if (xattr_ac) |
| 1746 | ocfs2_free_alloc_context(xattr_ac); |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 1747 | if ((status < 0) && inode) { |
| 1748 | clear_nlink(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1749 | iput(inode); |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 1750 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1751 | |
| 1752 | mlog_exit(status); |
| 1753 | |
| 1754 | return status; |
| 1755 | } |
| 1756 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1757 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
| 1758 | { |
| 1759 | int status, namelen; |
| 1760 | |
| 1761 | mlog_entry_void(); |
| 1762 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1763 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
| 1764 | (long long)blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1765 | if (namelen <= 0) { |
| 1766 | if (namelen) |
| 1767 | status = namelen; |
| 1768 | else |
| 1769 | status = -EINVAL; |
| 1770 | mlog_errno(status); |
| 1771 | goto bail; |
| 1772 | } |
| 1773 | if (namelen != OCFS2_ORPHAN_NAMELEN) { |
| 1774 | status = -EINVAL; |
| 1775 | mlog_errno(status); |
| 1776 | goto bail; |
| 1777 | } |
| 1778 | |
| 1779 | mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name, |
| 1780 | namelen); |
| 1781 | |
| 1782 | status = 0; |
| 1783 | bail: |
| 1784 | mlog_exit(status); |
| 1785 | return status; |
| 1786 | } |
| 1787 | |
| 1788 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1789 | struct inode **ret_orphan_dir, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1790 | struct inode *inode, |
| 1791 | char *name, |
| 1792 | struct buffer_head **de_bh) |
| 1793 | { |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1794 | struct inode *orphan_dir_inode; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1795 | struct buffer_head *orphan_dir_bh = NULL; |
| 1796 | int status = 0; |
| 1797 | |
| 1798 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); |
| 1799 | if (status < 0) { |
| 1800 | mlog_errno(status); |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1801 | return status; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1802 | } |
| 1803 | |
| 1804 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
| 1805 | ORPHAN_DIR_SYSTEM_INODE, |
| 1806 | osb->slot_num); |
| 1807 | if (!orphan_dir_inode) { |
| 1808 | status = -ENOENT; |
| 1809 | mlog_errno(status); |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1810 | return status; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1811 | } |
| 1812 | |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1813 | mutex_lock(&orphan_dir_inode->i_mutex); |
| 1814 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1815 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1816 | if (status < 0) { |
| 1817 | mlog_errno(status); |
| 1818 | goto leave; |
| 1819 | } |
| 1820 | |
| 1821 | status = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, |
| 1822 | orphan_dir_bh, name, |
| 1823 | OCFS2_ORPHAN_NAMELEN, de_bh); |
| 1824 | if (status < 0) { |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1825 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1826 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1827 | mlog_errno(status); |
| 1828 | goto leave; |
| 1829 | } |
| 1830 | |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1831 | *ret_orphan_dir = orphan_dir_inode; |
| 1832 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1833 | leave: |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1834 | if (status) { |
| 1835 | mutex_unlock(&orphan_dir_inode->i_mutex); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1836 | iput(orphan_dir_inode); |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1837 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1838 | |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 1839 | brelse(orphan_dir_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1840 | |
| 1841 | mlog_exit(status); |
| 1842 | return status; |
| 1843 | } |
| 1844 | |
| 1845 | static int ocfs2_orphan_add(struct ocfs2_super *osb, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 1846 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1847 | struct inode *inode, |
| 1848 | struct ocfs2_dinode *fe, |
| 1849 | char *name, |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1850 | struct buffer_head *de_bh, |
| 1851 | struct inode *orphan_dir_inode) |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1852 | { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1853 | struct buffer_head *orphan_dir_bh = NULL; |
| 1854 | int status = 0; |
| 1855 | struct ocfs2_dinode *orphan_fe; |
| 1856 | |
| 1857 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); |
| 1858 | |
Joel Becker | b657c95 | 2008-11-13 14:49:11 -0800 | [diff] [blame^] | 1859 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1860 | if (status < 0) { |
| 1861 | mlog_errno(status); |
| 1862 | goto leave; |
| 1863 | } |
| 1864 | |
| 1865 | status = ocfs2_journal_access(handle, orphan_dir_inode, orphan_dir_bh, |
| 1866 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 1867 | if (status < 0) { |
| 1868 | mlog_errno(status); |
| 1869 | goto leave; |
| 1870 | } |
| 1871 | |
| 1872 | /* we're a cluster, and nlink can change on disk from |
| 1873 | * underneath us... */ |
| 1874 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; |
| 1875 | if (S_ISDIR(inode->i_mode)) |
| 1876 | le16_add_cpu(&orphan_fe->i_links_count, 1); |
| 1877 | orphan_dir_inode->i_nlink = le16_to_cpu(orphan_fe->i_links_count); |
| 1878 | |
| 1879 | status = ocfs2_journal_dirty(handle, orphan_dir_bh); |
| 1880 | if (status < 0) { |
| 1881 | mlog_errno(status); |
| 1882 | goto leave; |
| 1883 | } |
| 1884 | |
| 1885 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, |
| 1886 | OCFS2_ORPHAN_NAMELEN, inode, |
| 1887 | OCFS2_I(inode)->ip_blkno, |
| 1888 | orphan_dir_bh, de_bh); |
| 1889 | if (status < 0) { |
| 1890 | mlog_errno(status); |
| 1891 | goto leave; |
| 1892 | } |
| 1893 | |
| 1894 | le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL); |
| 1895 | |
| 1896 | /* Record which orphan dir our inode now resides |
| 1897 | * in. delete_inode will use this to determine which orphan |
| 1898 | * dir to lock. */ |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 1899 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1900 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1901 | mlog(0, "Inode %llu orphaned in slot %d\n", |
| 1902 | (unsigned long long)OCFS2_I(inode)->ip_blkno, osb->slot_num); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1903 | |
| 1904 | leave: |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 1905 | brelse(orphan_dir_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1906 | |
| 1907 | mlog_exit(status); |
| 1908 | return status; |
| 1909 | } |
| 1910 | |
| 1911 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ |
| 1912 | int ocfs2_orphan_del(struct ocfs2_super *osb, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 1913 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1914 | struct inode *orphan_dir_inode, |
| 1915 | struct inode *inode, |
| 1916 | struct buffer_head *orphan_dir_bh) |
| 1917 | { |
| 1918 | char name[OCFS2_ORPHAN_NAMELEN + 1]; |
| 1919 | struct ocfs2_dinode *orphan_fe; |
| 1920 | int status = 0; |
| 1921 | struct buffer_head *target_de_bh = NULL; |
| 1922 | struct ocfs2_dir_entry *target_de = NULL; |
| 1923 | |
| 1924 | mlog_entry_void(); |
| 1925 | |
| 1926 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); |
| 1927 | if (status < 0) { |
| 1928 | mlog_errno(status); |
| 1929 | goto leave; |
| 1930 | } |
| 1931 | |
Mark Fasheh | b069705 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1932 | mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n", |
| 1933 | name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, |
| 1934 | OCFS2_ORPHAN_NAMELEN); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1935 | |
| 1936 | /* find it's spot in the orphan directory */ |
| 1937 | target_de_bh = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, |
| 1938 | orphan_dir_inode, &target_de); |
| 1939 | if (!target_de_bh) { |
| 1940 | status = -ENOENT; |
| 1941 | mlog_errno(status); |
| 1942 | goto leave; |
| 1943 | } |
| 1944 | |
| 1945 | /* remove it from the orphan directory */ |
| 1946 | status = ocfs2_delete_entry(handle, orphan_dir_inode, target_de, |
| 1947 | target_de_bh); |
| 1948 | if (status < 0) { |
| 1949 | mlog_errno(status); |
| 1950 | goto leave; |
| 1951 | } |
| 1952 | |
| 1953 | status = ocfs2_journal_access(handle,orphan_dir_inode, orphan_dir_bh, |
| 1954 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 1955 | if (status < 0) { |
| 1956 | mlog_errno(status); |
| 1957 | goto leave; |
| 1958 | } |
| 1959 | |
| 1960 | /* do the i_nlink dance! :) */ |
| 1961 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; |
| 1962 | if (S_ISDIR(inode->i_mode)) |
| 1963 | le16_add_cpu(&orphan_fe->i_links_count, -1); |
| 1964 | orphan_dir_inode->i_nlink = le16_to_cpu(orphan_fe->i_links_count); |
| 1965 | |
| 1966 | status = ocfs2_journal_dirty(handle, orphan_dir_bh); |
| 1967 | if (status < 0) { |
| 1968 | mlog_errno(status); |
| 1969 | goto leave; |
| 1970 | } |
| 1971 | |
| 1972 | leave: |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 1973 | brelse(target_de_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1974 | |
| 1975 | mlog_exit(status); |
| 1976 | return status; |
| 1977 | } |
| 1978 | |
Arjan van de Ven | 92e1d5b | 2007-02-12 00:55:39 -0800 | [diff] [blame] | 1979 | const struct inode_operations ocfs2_dir_iops = { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1980 | .create = ocfs2_create, |
| 1981 | .lookup = ocfs2_lookup, |
| 1982 | .link = ocfs2_link, |
| 1983 | .unlink = ocfs2_unlink, |
| 1984 | .rmdir = ocfs2_unlink, |
| 1985 | .symlink = ocfs2_symlink, |
| 1986 | .mkdir = ocfs2_mkdir, |
| 1987 | .mknod = ocfs2_mknod, |
| 1988 | .rename = ocfs2_rename, |
| 1989 | .setattr = ocfs2_setattr, |
| 1990 | .getattr = ocfs2_getattr, |
Tiger Yang | d38eb8d | 2006-11-27 09:59:21 +0800 | [diff] [blame] | 1991 | .permission = ocfs2_permission, |
Tiger Yang | cf1d6c7 | 2008-08-18 17:11:00 +0800 | [diff] [blame] | 1992 | .setxattr = generic_setxattr, |
| 1993 | .getxattr = generic_getxattr, |
| 1994 | .listxattr = ocfs2_listxattr, |
| 1995 | .removexattr = generic_removexattr, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1996 | }; |