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> |
Jan Kara | a90714c | 2008-10-09 19:38:40 +0200 | [diff] [blame] | 43 | #include <linux/quotaops.h> |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 44 | |
| 45 | #define MLOG_MASK_PREFIX ML_NAMEI |
| 46 | #include <cluster/masklog.h> |
| 47 | |
| 48 | #include "ocfs2.h" |
| 49 | |
| 50 | #include "alloc.h" |
| 51 | #include "dcache.h" |
| 52 | #include "dir.h" |
| 53 | #include "dlmglue.h" |
| 54 | #include "extent_map.h" |
| 55 | #include "file.h" |
| 56 | #include "inode.h" |
| 57 | #include "journal.h" |
| 58 | #include "namei.h" |
| 59 | #include "suballoc.h" |
Mark Fasheh | aa95887 | 2006-04-21 13:49:02 -0700 | [diff] [blame] | 60 | #include "super.h" |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 61 | #include "symlink.h" |
| 62 | #include "sysfile.h" |
| 63 | #include "uptodate.h" |
Tiger Yang | cf1d6c7 | 2008-08-18 17:11:00 +0800 | [diff] [blame] | 64 | #include "xattr.h" |
Tiger Yang | 89c38bd | 2008-11-14 11:17:41 +0800 | [diff] [blame] | 65 | #include "acl.h" |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 66 | |
| 67 | #include "buffer_head_io.h" |
| 68 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 69 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
| 70 | struct inode *dir, |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 71 | struct inode *inode, |
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, |
Tao Ma | 19bd341 | 2009-08-18 11:44:10 +0800 | [diff] [blame] | 80 | u64 blkno, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 81 | char *name, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 82 | struct ocfs2_dir_lookup_result *lookup); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 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, |
Tristan Ye | 3939fda | 2010-03-19 09:21:09 +0800 | [diff] [blame] | 87 | struct buffer_head *fe_bh, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 88 | char *name, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 89 | struct ocfs2_dir_lookup_result *lookup, |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 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 | b0697053 | 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 | |
Jan Kara | cb25797 | 2009-06-04 15:26:50 +0200 | [diff] [blame] | 120 | status = ocfs2_inode_lock_nested(dir, NULL, 0, OI_LS_PARENT); |
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; |
Dmitry Monakhov | 75fe0a2 | 2010-03-04 17:32:16 +0300 | [diff] [blame] | 207 | inode_init_owner(inode, dir, mode); |
Christoph Hellwig | 871a293 | 2010-03-03 09:05:07 -0500 | [diff] [blame] | 208 | dquot_initialize(inode); |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 209 | return inode; |
| 210 | } |
| 211 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 212 | static int ocfs2_mknod(struct inode *dir, |
| 213 | struct dentry *dentry, |
| 214 | int mode, |
| 215 | dev_t dev) |
| 216 | { |
| 217 | int status = 0; |
| 218 | struct buffer_head *parent_fe_bh = NULL; |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 219 | handle_t *handle = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 220 | struct ocfs2_super *osb; |
| 221 | struct ocfs2_dinode *dirfe; |
| 222 | struct buffer_head *new_fe_bh = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 223 | struct inode *inode = NULL; |
| 224 | struct ocfs2_alloc_context *inode_ac = NULL; |
| 225 | struct ocfs2_alloc_context *data_ac = NULL; |
Mark Fasheh | 9b7895e | 2008-11-12 16:27:44 -0800 | [diff] [blame] | 226 | struct ocfs2_alloc_context *meta_ac = NULL; |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 227 | int want_clusters = 0; |
Mark Fasheh | 9b7895e | 2008-11-12 16:27:44 -0800 | [diff] [blame] | 228 | int want_meta = 0; |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 229 | int xattr_credits = 0; |
| 230 | struct ocfs2_security_xattr_info si = { |
| 231 | .enable = 1, |
| 232 | }; |
Jan Kara | a90714c | 2008-10-09 19:38:40 +0200 | [diff] [blame] | 233 | int did_quota_inode = 0; |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 234 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
Joel Becker | 547ba7c | 2010-05-10 11:56:52 -0700 | [diff] [blame] | 235 | sigset_t oldset; |
| 236 | int did_block_signals = 0; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 237 | |
| 238 | mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, mode, |
| 239 | (unsigned long)dev, dentry->d_name.len, |
| 240 | dentry->d_name.name); |
| 241 | |
Christoph Hellwig | 871a293 | 2010-03-03 09:05:07 -0500 | [diff] [blame] | 242 | dquot_initialize(dir); |
Christoph Hellwig | 907f455 | 2010-03-03 09:05:06 -0500 | [diff] [blame] | 243 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 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 | 198a1ca | 2008-11-20 17:54:57 -0800 | [diff] [blame] | 254 | if (S_ISDIR(mode) && (dir->i_nlink >= ocfs2_link_max(osb))) { |
Mark Fasheh | a663e30 | 2006-08-09 11:45:07 -0700 | [diff] [blame] | 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; |
Mark Fasheh | 198a1ca | 2008-11-20 17:54:57 -0800 | [diff] [blame] | 260 | if (!ocfs2_read_links_count(dirfe)) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 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, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 274 | dentry->d_name.len, &lookup); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 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, |
Mark Fasheh | 9b7895e | 2008-11-12 16:27:44 -0800 | [diff] [blame] | 308 | &si, &want_clusters, |
| 309 | &xattr_credits, &want_meta); |
Tiger Yang | 89c38bd | 2008-11-14 11:17:41 +0800 | [diff] [blame] | 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. */ |
Mark Fasheh | 9b7895e | 2008-11-12 16:27:44 -0800 | [diff] [blame] | 316 | if (S_ISDIR(mode) && !ocfs2_supports_inline_data(osb)) { |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 317 | want_clusters += 1; |
| 318 | |
Mark Fasheh | 9b7895e | 2008-11-12 16:27:44 -0800 | [diff] [blame] | 319 | /* Dir indexing requires extra space as well */ |
Mark Fasheh | 4ed8a6b | 2008-11-24 17:02:08 -0800 | [diff] [blame] | 320 | if (ocfs2_supports_indexed_dirs(osb)) |
Mark Fasheh | 9b7895e | 2008-11-12 16:27:44 -0800 | [diff] [blame] | 321 | want_meta++; |
Mark Fasheh | 9b7895e | 2008-11-12 16:27:44 -0800 | [diff] [blame] | 322 | } |
| 323 | |
| 324 | status = ocfs2_reserve_new_metadata_blocks(osb, want_meta, &meta_ac); |
| 325 | if (status < 0) { |
| 326 | if (status != -ENOSPC) |
| 327 | mlog_errno(status); |
| 328 | goto leave; |
| 329 | } |
| 330 | |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 331 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
| 332 | if (status < 0) { |
| 333 | if (status != -ENOSPC) |
| 334 | mlog_errno(status); |
| 335 | goto leave; |
| 336 | } |
| 337 | |
Mark Fasheh | 9b7895e | 2008-11-12 16:27:44 -0800 | [diff] [blame] | 338 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, |
| 339 | S_ISDIR(mode), |
| 340 | xattr_credits)); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 341 | if (IS_ERR(handle)) { |
| 342 | status = PTR_ERR(handle); |
| 343 | handle = NULL; |
| 344 | mlog_errno(status); |
| 345 | goto leave; |
| 346 | } |
| 347 | |
Joel Becker | 547ba7c | 2010-05-10 11:56:52 -0700 | [diff] [blame] | 348 | /* Starting to change things, restart is no longer possible. */ |
| 349 | ocfs2_block_signals(&oldset); |
| 350 | did_block_signals = 1; |
| 351 | |
Christoph Hellwig | 63936dd | 2010-03-03 09:05:01 -0500 | [diff] [blame] | 352 | status = dquot_alloc_inode(inode); |
| 353 | if (status) |
Jan Kara | a90714c | 2008-10-09 19:38:40 +0200 | [diff] [blame] | 354 | goto leave; |
Jan Kara | a90714c | 2008-10-09 19:38:40 +0200 | [diff] [blame] | 355 | did_quota_inode = 1; |
| 356 | |
Tao Ma | 19bd341 | 2009-08-18 11:44:10 +0800 | [diff] [blame] | 357 | mlog_entry("(0x%p, 0x%p, %d, %lu, '%.*s')\n", dir, dentry, |
| 358 | inode->i_mode, (unsigned long)dev, dentry->d_name.len, |
| 359 | dentry->d_name.name); |
| 360 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 361 | /* do the real work now. */ |
Tao Ma | 19bd341 | 2009-08-18 11:44:10 +0800 | [diff] [blame] | 362 | status = ocfs2_mknod_locked(osb, dir, inode, dev, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 363 | &new_fe_bh, parent_fe_bh, handle, |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 364 | inode_ac); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 365 | if (status < 0) { |
| 366 | mlog_errno(status); |
| 367 | goto leave; |
| 368 | } |
| 369 | |
| 370 | if (S_ISDIR(mode)) { |
| 371 | status = ocfs2_fill_new_dir(osb, handle, dir, inode, |
Mark Fasheh | 9b7895e | 2008-11-12 16:27:44 -0800 | [diff] [blame] | 372 | new_fe_bh, data_ac, meta_ac); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 373 | if (status < 0) { |
| 374 | mlog_errno(status); |
| 375 | goto leave; |
| 376 | } |
| 377 | |
Joel Becker | 0cf2f76 | 2009-02-12 16:41:25 -0800 | [diff] [blame] | 378 | status = ocfs2_journal_access_di(handle, INODE_CACHE(dir), |
| 379 | parent_fe_bh, |
Joel Becker | 13723d0 | 2008-10-17 19:25:01 -0700 | [diff] [blame] | 380 | OCFS2_JOURNAL_ACCESS_WRITE); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 381 | if (status < 0) { |
| 382 | mlog_errno(status); |
| 383 | goto leave; |
| 384 | } |
Mark Fasheh | 198a1ca | 2008-11-20 17:54:57 -0800 | [diff] [blame] | 385 | ocfs2_add_links_count(dirfe, 1); |
Joel Becker | ec20cec | 2010-03-19 14:13:52 -0700 | [diff] [blame] | 386 | ocfs2_journal_dirty(handle, parent_fe_bh); |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 387 | inc_nlink(dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 388 | } |
| 389 | |
Tiger Yang | 89c38bd | 2008-11-14 11:17:41 +0800 | [diff] [blame] | 390 | status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, |
Mark Fasheh | 9b7895e | 2008-11-12 16:27:44 -0800 | [diff] [blame] | 391 | meta_ac, data_ac); |
Tiger Yang | 89c38bd | 2008-11-14 11:17:41 +0800 | [diff] [blame] | 392 | if (status < 0) { |
| 393 | mlog_errno(status); |
| 394 | goto leave; |
| 395 | } |
| 396 | |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 397 | if (si.enable) { |
| 398 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, |
Mark Fasheh | 9b7895e | 2008-11-12 16:27:44 -0800 | [diff] [blame] | 399 | meta_ac, data_ac); |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 400 | if (status < 0) { |
| 401 | mlog_errno(status); |
| 402 | goto leave; |
| 403 | } |
| 404 | } |
| 405 | |
Mark Fasheh | a9743fc | 2010-04-23 11:42:22 -0700 | [diff] [blame] | 406 | /* |
| 407 | * Do this before adding the entry to the directory. We add |
| 408 | * also set d_op after success so that ->d_iput() will cleanup |
| 409 | * the dentry lock even if ocfs2_add_entry() fails below. |
| 410 | */ |
| 411 | status = ocfs2_dentry_attach_lock(dentry, inode, |
| 412 | OCFS2_I(dir)->ip_blkno); |
| 413 | if (status) { |
| 414 | mlog_errno(status); |
| 415 | goto leave; |
| 416 | } |
| 417 | dentry->d_op = &ocfs2_dentry_ops; |
| 418 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 419 | status = ocfs2_add_entry(handle, dentry, inode, |
| 420 | OCFS2_I(inode)->ip_blkno, parent_fe_bh, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 421 | &lookup); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 422 | if (status < 0) { |
| 423 | mlog_errno(status); |
| 424 | goto leave; |
| 425 | } |
| 426 | |
| 427 | insert_inode_hash(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 428 | d_instantiate(dentry, inode); |
| 429 | status = 0; |
| 430 | leave: |
Jan Kara | a90714c | 2008-10-09 19:38:40 +0200 | [diff] [blame] | 431 | if (status < 0 && did_quota_inode) |
Christoph Hellwig | 63936dd | 2010-03-03 09:05:01 -0500 | [diff] [blame] | 432 | dquot_free_inode(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 433 | if (handle) |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 434 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 435 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 436 | ocfs2_inode_unlock(dir, 1); |
Joel Becker | 547ba7c | 2010-05-10 11:56:52 -0700 | [diff] [blame] | 437 | if (did_block_signals) |
| 438 | ocfs2_unblock_signals(&oldset); |
Mark Fasheh | e3a8213 | 2006-10-05 16:04:17 -0700 | [diff] [blame] | 439 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 440 | if (status == -ENOSPC) |
| 441 | mlog(0, "Disk is full\n"); |
| 442 | |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 443 | brelse(new_fe_bh); |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 444 | brelse(parent_fe_bh); |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 445 | kfree(si.name); |
| 446 | kfree(si.value); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 447 | |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 448 | ocfs2_free_dir_lookup_result(&lookup); |
| 449 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 450 | if (inode_ac) |
| 451 | ocfs2_free_alloc_context(inode_ac); |
| 452 | |
| 453 | if (data_ac) |
| 454 | ocfs2_free_alloc_context(data_ac); |
| 455 | |
Mark Fasheh | 9b7895e | 2008-11-12 16:27:44 -0800 | [diff] [blame] | 456 | if (meta_ac) |
| 457 | ocfs2_free_alloc_context(meta_ac); |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 458 | |
Li Dongyang | 062d340 | 2010-04-22 16:11:29 +0800 | [diff] [blame] | 459 | /* |
| 460 | * We should call iput after the i_mutex of the bitmap been |
| 461 | * unlocked in ocfs2_free_alloc_context, or the |
| 462 | * ocfs2_delete_inode will mutex_lock again. |
| 463 | */ |
| 464 | if ((status < 0) && inode) { |
| 465 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
| 466 | clear_nlink(inode); |
| 467 | iput(inode); |
| 468 | } |
| 469 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 470 | mlog_exit(status); |
| 471 | |
| 472 | return status; |
| 473 | } |
| 474 | |
Mark Fasheh | 021960c | 2010-08-13 15:15:15 -0700 | [diff] [blame] | 475 | static int __ocfs2_mknod_locked(struct inode *dir, |
| 476 | struct inode *inode, |
| 477 | dev_t dev, |
| 478 | struct buffer_head **new_fe_bh, |
| 479 | struct buffer_head *parent_fe_bh, |
| 480 | handle_t *handle, |
| 481 | struct ocfs2_alloc_context *inode_ac, |
| 482 | u64 fe_blkno, u64 suballoc_loc, u16 suballoc_bit) |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 483 | { |
| 484 | int status = 0; |
Mark Fasheh | 021960c | 2010-08-13 15:15:15 -0700 | [diff] [blame] | 485 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 486 | struct ocfs2_dinode *fe = NULL; |
| 487 | struct ocfs2_extent_list *fel; |
Mark Fasheh | 9b7895e | 2008-11-12 16:27:44 -0800 | [diff] [blame] | 488 | u16 feat; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 489 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 490 | *new_fe_bh = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 491 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 492 | /* populate as many fields early on as possible - many of |
| 493 | * these are used by the support functions here and in |
| 494 | * callers. */ |
| 495 | inode->i_ino = ino_from_blkno(osb->sb, fe_blkno); |
| 496 | OCFS2_I(inode)->ip_blkno = fe_blkno; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 497 | spin_lock(&osb->osb_lock); |
| 498 | inode->i_generation = osb->s_next_generation++; |
| 499 | spin_unlock(&osb->osb_lock); |
| 500 | |
| 501 | *new_fe_bh = sb_getblk(osb->sb, fe_blkno); |
| 502 | if (!*new_fe_bh) { |
| 503 | status = -EIO; |
| 504 | mlog_errno(status); |
| 505 | goto leave; |
| 506 | } |
Joel Becker | 8cb471e | 2009-02-10 20:00:41 -0800 | [diff] [blame] | 507 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), *new_fe_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 508 | |
Joel Becker | 0cf2f76 | 2009-02-12 16:41:25 -0800 | [diff] [blame] | 509 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
| 510 | *new_fe_bh, |
Joel Becker | 13723d0 | 2008-10-17 19:25:01 -0700 | [diff] [blame] | 511 | OCFS2_JOURNAL_ACCESS_CREATE); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 512 | if (status < 0) { |
| 513 | mlog_errno(status); |
| 514 | goto leave; |
| 515 | } |
| 516 | |
| 517 | fe = (struct ocfs2_dinode *) (*new_fe_bh)->b_data; |
| 518 | memset(fe, 0, osb->sb->s_blocksize); |
| 519 | |
| 520 | fe->i_generation = cpu_to_le32(inode->i_generation); |
| 521 | fe->i_fs_generation = cpu_to_le32(osb->fs_generation); |
| 522 | fe->i_blkno = cpu_to_le64(fe_blkno); |
Joel Becker | 2b6cb57 | 2010-03-26 10:09:15 +0800 | [diff] [blame] | 523 | fe->i_suballoc_loc = cpu_to_le64(suballoc_loc); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 524 | fe->i_suballoc_bit = cpu_to_le16(suballoc_bit); |
Tao Ma | 4d0ddb2 | 2008-03-05 16:11:46 +0800 | [diff] [blame] | 525 | fe->i_suballoc_slot = cpu_to_le16(inode_ac->ac_alloc_slot); |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 526 | fe->i_uid = cpu_to_le32(inode->i_uid); |
| 527 | fe->i_gid = cpu_to_le32(inode->i_gid); |
| 528 | fe->i_mode = cpu_to_le16(inode->i_mode); |
| 529 | if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 530 | fe->id1.dev1.i_rdev = cpu_to_le64(huge_encode_dev(dev)); |
Mark Fasheh | 198a1ca | 2008-11-20 17:54:57 -0800 | [diff] [blame] | 531 | |
| 532 | ocfs2_set_links_count(fe, inode->i_nlink); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 533 | |
| 534 | fe->i_last_eb_blk = 0; |
| 535 | strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); |
| 536 | le32_add_cpu(&fe->i_flags, OCFS2_VALID_FL); |
| 537 | fe->i_atime = fe->i_ctime = fe->i_mtime = |
| 538 | cpu_to_le64(CURRENT_TIME.tv_sec); |
| 539 | fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = |
| 540 | cpu_to_le32(CURRENT_TIME.tv_nsec); |
| 541 | fe->i_dtime = 0; |
| 542 | |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 543 | /* |
Mark Fasheh | 9b7895e | 2008-11-12 16:27:44 -0800 | [diff] [blame] | 544 | * If supported, directories start with inline data. If inline |
| 545 | * isn't supported, but indexing is, we start them as indexed. |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 546 | */ |
Mark Fasheh | 9b7895e | 2008-11-12 16:27:44 -0800 | [diff] [blame] | 547 | feat = le16_to_cpu(fe->i_dyn_features); |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 548 | if (S_ISDIR(inode->i_mode) && ocfs2_supports_inline_data(osb)) { |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 549 | fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL); |
| 550 | |
Tiger Yang | d9ae49d | 2009-03-05 11:06:15 +0800 | [diff] [blame] | 551 | fe->id2.i_data.id_count = cpu_to_le16( |
| 552 | ocfs2_max_inline_data_with_xattr(osb->sb, fe)); |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 553 | } else { |
| 554 | fel = &fe->id2.i_list; |
| 555 | fel->l_tree_depth = 0; |
| 556 | fel->l_next_free_rec = 0; |
| 557 | fel->l_count = cpu_to_le16(ocfs2_extent_recs_per_inode(osb->sb)); |
| 558 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 559 | |
Joel Becker | ec20cec | 2010-03-19 14:13:52 -0700 | [diff] [blame] | 560 | ocfs2_journal_dirty(handle, *new_fe_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 561 | |
Joel Becker | b657c95 | 2008-11-13 14:49:11 -0800 | [diff] [blame] | 562 | ocfs2_populate_inode(inode, fe, 1); |
Joel Becker | 0cf2f76 | 2009-02-12 16:41:25 -0800 | [diff] [blame] | 563 | ocfs2_ci_set_new(osb, INODE_CACHE(inode)); |
Sunil Mushran | c271c5c | 2006-12-05 17:56:35 -0800 | [diff] [blame] | 564 | if (!ocfs2_mount_local(osb)) { |
| 565 | status = ocfs2_create_new_inode_locks(inode); |
| 566 | if (status < 0) |
| 567 | mlog_errno(status); |
| 568 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 569 | |
| 570 | status = 0; /* error in ocfs2_create_new_inode_locks is not |
| 571 | * critical */ |
| 572 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 573 | leave: |
| 574 | if (status < 0) { |
| 575 | if (*new_fe_bh) { |
| 576 | brelse(*new_fe_bh); |
| 577 | *new_fe_bh = NULL; |
| 578 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 579 | } |
| 580 | |
| 581 | mlog_exit(status); |
| 582 | return status; |
| 583 | } |
| 584 | |
Mark Fasheh | 021960c | 2010-08-13 15:15:15 -0700 | [diff] [blame] | 585 | static int ocfs2_mknod_locked(struct ocfs2_super *osb, |
| 586 | struct inode *dir, |
| 587 | struct inode *inode, |
| 588 | dev_t dev, |
| 589 | struct buffer_head **new_fe_bh, |
| 590 | struct buffer_head *parent_fe_bh, |
| 591 | handle_t *handle, |
| 592 | struct ocfs2_alloc_context *inode_ac) |
| 593 | { |
| 594 | int status = 0; |
| 595 | u64 suballoc_loc, fe_blkno = 0; |
| 596 | u16 suballoc_bit; |
| 597 | |
| 598 | *new_fe_bh = NULL; |
| 599 | |
| 600 | status = ocfs2_claim_new_inode(handle, dir, parent_fe_bh, |
| 601 | inode_ac, &suballoc_loc, |
| 602 | &suballoc_bit, &fe_blkno); |
| 603 | if (status < 0) { |
| 604 | mlog_errno(status); |
| 605 | return status; |
| 606 | } |
| 607 | |
| 608 | return __ocfs2_mknod_locked(dir, inode, dev, new_fe_bh, |
| 609 | parent_fe_bh, handle, inode_ac, |
| 610 | fe_blkno, suballoc_loc, suballoc_bit); |
| 611 | } |
| 612 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 613 | static int ocfs2_mkdir(struct inode *dir, |
| 614 | struct dentry *dentry, |
| 615 | int mode) |
| 616 | { |
| 617 | int ret; |
| 618 | |
| 619 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, |
| 620 | dentry->d_name.len, dentry->d_name.name); |
| 621 | ret = ocfs2_mknod(dir, dentry, mode | S_IFDIR, 0); |
| 622 | mlog_exit(ret); |
| 623 | |
| 624 | return ret; |
| 625 | } |
| 626 | |
| 627 | static int ocfs2_create(struct inode *dir, |
| 628 | struct dentry *dentry, |
| 629 | int mode, |
| 630 | struct nameidata *nd) |
| 631 | { |
| 632 | int ret; |
| 633 | |
| 634 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, mode, |
| 635 | dentry->d_name.len, dentry->d_name.name); |
| 636 | ret = ocfs2_mknod(dir, dentry, mode | S_IFREG, 0); |
| 637 | mlog_exit(ret); |
| 638 | |
| 639 | return ret; |
| 640 | } |
| 641 | |
| 642 | static int ocfs2_link(struct dentry *old_dentry, |
| 643 | struct inode *dir, |
| 644 | struct dentry *dentry) |
| 645 | { |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 646 | handle_t *handle; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 647 | struct inode *inode = old_dentry->d_inode; |
| 648 | int err; |
| 649 | struct buffer_head *fe_bh = NULL; |
| 650 | struct buffer_head *parent_fe_bh = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 651 | struct ocfs2_dinode *fe = NULL; |
| 652 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 653 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
Joel Becker | 547ba7c | 2010-05-10 11:56:52 -0700 | [diff] [blame] | 654 | sigset_t oldset; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 655 | |
| 656 | mlog_entry("(inode=%lu, old='%.*s' new='%.*s')\n", inode->i_ino, |
| 657 | old_dentry->d_name.len, old_dentry->d_name.name, |
| 658 | dentry->d_name.len, dentry->d_name.name); |
| 659 | |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 660 | if (S_ISDIR(inode->i_mode)) |
| 661 | return -EPERM; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 662 | |
Christoph Hellwig | 871a293 | 2010-03-03 09:05:07 -0500 | [diff] [blame] | 663 | dquot_initialize(dir); |
Christoph Hellwig | 907f455 | 2010-03-03 09:05:06 -0500 | [diff] [blame] | 664 | |
Jan Kara | cb25797 | 2009-06-04 15:26:50 +0200 | [diff] [blame] | 665 | err = ocfs2_inode_lock_nested(dir, &parent_fe_bh, 1, OI_LS_PARENT); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 666 | if (err < 0) { |
| 667 | if (err != -ENOENT) |
| 668 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 669 | return err; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 670 | } |
| 671 | |
Tiger Yang | 0f62de2 | 2006-08-31 20:39:47 -0700 | [diff] [blame] | 672 | if (!dir->i_nlink) { |
| 673 | err = -ENOENT; |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 674 | goto out; |
Tiger Yang | 0f62de2 | 2006-08-31 20:39:47 -0700 | [diff] [blame] | 675 | } |
| 676 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 677 | err = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
| 678 | dentry->d_name.len); |
| 679 | if (err) |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 680 | goto out; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 681 | |
| 682 | err = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, |
| 683 | dentry->d_name.name, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 684 | dentry->d_name.len, &lookup); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 685 | if (err < 0) { |
| 686 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 687 | goto out; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 688 | } |
| 689 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 690 | err = ocfs2_inode_lock(inode, &fe_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 691 | if (err < 0) { |
| 692 | if (err != -ENOENT) |
| 693 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 694 | goto out; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 695 | } |
| 696 | |
| 697 | fe = (struct ocfs2_dinode *) fe_bh->b_data; |
Mark Fasheh | 198a1ca | 2008-11-20 17:54:57 -0800 | [diff] [blame] | 698 | if (ocfs2_read_links_count(fe) >= ocfs2_link_max(osb)) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 699 | err = -EMLINK; |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 700 | goto out_unlock_inode; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 701 | } |
| 702 | |
Jan Kara | a90714c | 2008-10-09 19:38:40 +0200 | [diff] [blame] | 703 | handle = ocfs2_start_trans(osb, ocfs2_link_credits(osb->sb)); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 704 | if (IS_ERR(handle)) { |
| 705 | err = PTR_ERR(handle); |
| 706 | handle = NULL; |
| 707 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 708 | goto out_unlock_inode; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 709 | } |
| 710 | |
Joel Becker | 547ba7c | 2010-05-10 11:56:52 -0700 | [diff] [blame] | 711 | /* Starting to change things, restart is no longer possible. */ |
| 712 | ocfs2_block_signals(&oldset); |
| 713 | |
Joel Becker | 0cf2f76 | 2009-02-12 16:41:25 -0800 | [diff] [blame] | 714 | err = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
Joel Becker | 13723d0 | 2008-10-17 19:25:01 -0700 | [diff] [blame] | 715 | OCFS2_JOURNAL_ACCESS_WRITE); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 716 | if (err < 0) { |
| 717 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 718 | goto out_commit; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 719 | } |
| 720 | |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 721 | inc_nlink(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 722 | inode->i_ctime = CURRENT_TIME; |
Mark Fasheh | 198a1ca | 2008-11-20 17:54:57 -0800 | [diff] [blame] | 723 | ocfs2_set_links_count(fe, inode->i_nlink); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 724 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); |
| 725 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); |
Joel Becker | ec20cec | 2010-03-19 14:13:52 -0700 | [diff] [blame] | 726 | ocfs2_journal_dirty(handle, fe_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 727 | |
| 728 | err = ocfs2_add_entry(handle, dentry, inode, |
| 729 | OCFS2_I(inode)->ip_blkno, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 730 | parent_fe_bh, &lookup); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 731 | if (err) { |
Mark Fasheh | 198a1ca | 2008-11-20 17:54:57 -0800 | [diff] [blame] | 732 | ocfs2_add_links_count(fe, -1); |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 733 | drop_nlink(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 734 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 735 | goto out_commit; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 736 | } |
| 737 | |
Mark Fasheh | 0027dd5 | 2006-09-21 16:51:28 -0700 | [diff] [blame] | 738 | err = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 739 | if (err) { |
| 740 | mlog_errno(err); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 741 | goto out_commit; |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 742 | } |
| 743 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 744 | atomic_inc(&inode->i_count); |
| 745 | dentry->d_op = &ocfs2_dentry_ops; |
| 746 | d_instantiate(dentry, inode); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 747 | |
| 748 | out_commit: |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 749 | ocfs2_commit_trans(osb, handle); |
Joel Becker | 547ba7c | 2010-05-10 11:56:52 -0700 | [diff] [blame] | 750 | ocfs2_unblock_signals(&oldset); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 751 | out_unlock_inode: |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 752 | ocfs2_inode_unlock(inode, 1); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 753 | |
| 754 | out: |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 755 | ocfs2_inode_unlock(dir, 1); |
Mark Fasheh | 123a964 | 2006-10-05 16:48:23 -0700 | [diff] [blame] | 756 | |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 757 | brelse(fe_bh); |
| 758 | brelse(parent_fe_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 759 | |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 760 | ocfs2_free_dir_lookup_result(&lookup); |
| 761 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 762 | mlog_exit(err); |
| 763 | |
| 764 | return err; |
| 765 | } |
| 766 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 767 | /* |
| 768 | * Takes and drops an exclusive lock on the given dentry. This will |
| 769 | * force other nodes to drop it. |
| 770 | */ |
| 771 | static int ocfs2_remote_dentry_delete(struct dentry *dentry) |
| 772 | { |
| 773 | int ret; |
| 774 | |
| 775 | ret = ocfs2_dentry_lock(dentry, 1); |
| 776 | if (ret) |
| 777 | mlog_errno(ret); |
| 778 | else |
| 779 | ocfs2_dentry_unlock(dentry, 1); |
| 780 | |
| 781 | return ret; |
| 782 | } |
| 783 | |
Mark Fasheh | 17ff785 | 2006-09-30 23:29:05 -0700 | [diff] [blame] | 784 | static inline int inode_is_unlinkable(struct inode *inode) |
| 785 | { |
| 786 | if (S_ISDIR(inode->i_mode)) { |
| 787 | if (inode->i_nlink == 2) |
| 788 | return 1; |
| 789 | return 0; |
| 790 | } |
| 791 | |
| 792 | if (inode->i_nlink == 1) |
| 793 | return 1; |
| 794 | return 0; |
| 795 | } |
| 796 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 797 | static int ocfs2_unlink(struct inode *dir, |
| 798 | struct dentry *dentry) |
| 799 | { |
| 800 | int status; |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 801 | int child_locked = 0; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 802 | struct inode *inode = dentry->d_inode; |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 803 | struct inode *orphan_dir = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 804 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
| 805 | u64 blkno; |
| 806 | struct ocfs2_dinode *fe = NULL; |
| 807 | struct buffer_head *fe_bh = NULL; |
| 808 | struct buffer_head *parent_node_bh = NULL; |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 809 | handle_t *handle = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 810 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 811 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
| 812 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 813 | |
| 814 | mlog_entry("(0x%p, 0x%p, '%.*s')\n", dir, dentry, |
| 815 | dentry->d_name.len, dentry->d_name.name); |
| 816 | |
Christoph Hellwig | 871a293 | 2010-03-03 09:05:07 -0500 | [diff] [blame] | 817 | dquot_initialize(dir); |
Christoph Hellwig | 907f455 | 2010-03-03 09:05:06 -0500 | [diff] [blame] | 818 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 819 | BUG_ON(dentry->d_parent->d_inode != dir); |
| 820 | |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 821 | 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] | 822 | |
| 823 | if (inode == osb->root_inode) { |
| 824 | mlog(0, "Cannot delete the root directory\n"); |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 825 | return -EPERM; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 826 | } |
| 827 | |
Jan Kara | cb25797 | 2009-06-04 15:26:50 +0200 | [diff] [blame] | 828 | status = ocfs2_inode_lock_nested(dir, &parent_node_bh, 1, |
| 829 | OI_LS_PARENT); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 830 | if (status < 0) { |
| 831 | if (status != -ENOENT) |
| 832 | mlog_errno(status); |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 833 | return status; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 834 | } |
| 835 | |
| 836 | status = ocfs2_find_files_on_disk(dentry->d_name.name, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 837 | dentry->d_name.len, &blkno, dir, |
| 838 | &lookup); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 839 | if (status < 0) { |
| 840 | if (status != -ENOENT) |
| 841 | mlog_errno(status); |
| 842 | goto leave; |
| 843 | } |
| 844 | |
| 845 | if (OCFS2_I(inode)->ip_blkno != blkno) { |
| 846 | status = -ENOENT; |
| 847 | |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 848 | mlog(0, "ip_blkno %llu != dirent blkno %llu ip_flags = %x\n", |
| 849 | (unsigned long long)OCFS2_I(inode)->ip_blkno, |
| 850 | (unsigned long long)blkno, OCFS2_I(inode)->ip_flags); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 851 | goto leave; |
| 852 | } |
| 853 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 854 | status = ocfs2_inode_lock(inode, &fe_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 855 | if (status < 0) { |
| 856 | if (status != -ENOENT) |
| 857 | mlog_errno(status); |
| 858 | goto leave; |
| 859 | } |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 860 | child_locked = 1; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 861 | |
| 862 | if (S_ISDIR(inode->i_mode)) { |
Mark Fasheh | b80b549 | 2009-02-18 11:41:38 -0800 | [diff] [blame] | 863 | if (inode->i_nlink != 2 || !ocfs2_empty_dir(inode)) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 864 | status = -ENOTEMPTY; |
| 865 | goto leave; |
| 866 | } |
| 867 | } |
| 868 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 869 | status = ocfs2_remote_dentry_delete(dentry); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 870 | if (status < 0) { |
Mark Fasheh | 34d024f | 2007-09-24 15:56:19 -0700 | [diff] [blame] | 871 | /* This remote delete should succeed under all normal |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 872 | * circumstances. */ |
| 873 | mlog_errno(status); |
| 874 | goto leave; |
| 875 | } |
| 876 | |
Mark Fasheh | 17ff785 | 2006-09-30 23:29:05 -0700 | [diff] [blame] | 877 | if (inode_is_unlinkable(inode)) { |
Tao Ma | 19bd341 | 2009-08-18 11:44:10 +0800 | [diff] [blame] | 878 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
| 879 | OCFS2_I(inode)->ip_blkno, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 880 | orphan_name, &orphan_insert); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 881 | if (status < 0) { |
| 882 | mlog_errno(status); |
| 883 | goto leave; |
| 884 | } |
| 885 | } |
| 886 | |
Jan Kara | a90714c | 2008-10-09 19:38:40 +0200 | [diff] [blame] | 887 | handle = ocfs2_start_trans(osb, ocfs2_unlink_credits(osb->sb)); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 888 | if (IS_ERR(handle)) { |
| 889 | status = PTR_ERR(handle); |
| 890 | handle = NULL; |
| 891 | mlog_errno(status); |
| 892 | goto leave; |
| 893 | } |
| 894 | |
Joel Becker | 0cf2f76 | 2009-02-12 16:41:25 -0800 | [diff] [blame] | 895 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), fe_bh, |
Joel Becker | 13723d0 | 2008-10-17 19:25:01 -0700 | [diff] [blame] | 896 | OCFS2_JOURNAL_ACCESS_WRITE); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 897 | if (status < 0) { |
| 898 | mlog_errno(status); |
| 899 | goto leave; |
| 900 | } |
| 901 | |
| 902 | fe = (struct ocfs2_dinode *) fe_bh->b_data; |
| 903 | |
Mark Fasheh | 17ff785 | 2006-09-30 23:29:05 -0700 | [diff] [blame] | 904 | if (inode_is_unlinkable(inode)) { |
Tristan Ye | 3939fda | 2010-03-19 09:21:09 +0800 | [diff] [blame] | 905 | status = ocfs2_orphan_add(osb, handle, inode, fe_bh, orphan_name, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 906 | &orphan_insert, orphan_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 907 | if (status < 0) { |
| 908 | mlog_errno(status); |
| 909 | goto leave; |
| 910 | } |
| 911 | } |
| 912 | |
| 913 | /* delete the name from the parent dir */ |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 914 | status = ocfs2_delete_entry(handle, dir, &lookup); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 915 | if (status < 0) { |
| 916 | mlog_errno(status); |
| 917 | goto leave; |
| 918 | } |
| 919 | |
Mark Fasheh | 17ff785 | 2006-09-30 23:29:05 -0700 | [diff] [blame] | 920 | if (S_ISDIR(inode->i_mode)) |
| 921 | drop_nlink(inode); |
| 922 | drop_nlink(inode); |
Mark Fasheh | 198a1ca | 2008-11-20 17:54:57 -0800 | [diff] [blame] | 923 | ocfs2_set_links_count(fe, inode->i_nlink); |
Joel Becker | ec20cec | 2010-03-19 14:13:52 -0700 | [diff] [blame] | 924 | ocfs2_journal_dirty(handle, fe_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 925 | |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 926 | dir->i_ctime = dir->i_mtime = CURRENT_TIME; |
| 927 | if (S_ISDIR(inode->i_mode)) |
Mark Fasheh | 17ff785 | 2006-09-30 23:29:05 -0700 | [diff] [blame] | 928 | drop_nlink(dir); |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 929 | |
| 930 | status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh); |
| 931 | if (status < 0) { |
| 932 | mlog_errno(status); |
| 933 | if (S_ISDIR(inode->i_mode)) |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 934 | inc_nlink(dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 935 | } |
| 936 | |
| 937 | leave: |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 938 | if (handle) |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 939 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 940 | |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 941 | if (child_locked) |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 942 | ocfs2_inode_unlock(inode, 1); |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 943 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 944 | ocfs2_inode_unlock(dir, 1); |
Mark Fasheh | 30a4f5e | 2006-10-06 11:49:45 -0700 | [diff] [blame] | 945 | |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 946 | if (orphan_dir) { |
| 947 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 948 | ocfs2_inode_unlock(orphan_dir, 1); |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 949 | mutex_unlock(&orphan_dir->i_mutex); |
| 950 | iput(orphan_dir); |
| 951 | } |
| 952 | |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 953 | brelse(fe_bh); |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 954 | brelse(parent_node_bh); |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 955 | |
| 956 | ocfs2_free_dir_lookup_result(&orphan_insert); |
| 957 | ocfs2_free_dir_lookup_result(&lookup); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 958 | |
| 959 | mlog_exit(status); |
| 960 | |
| 961 | return status; |
| 962 | } |
| 963 | |
| 964 | /* |
| 965 | * The only place this should be used is rename! |
| 966 | * if they have the same id, then the 1st one is the only one locked. |
| 967 | */ |
| 968 | static int ocfs2_double_lock(struct ocfs2_super *osb, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 969 | struct buffer_head **bh1, |
| 970 | struct inode *inode1, |
| 971 | struct buffer_head **bh2, |
| 972 | struct inode *inode2) |
| 973 | { |
| 974 | int status; |
| 975 | struct ocfs2_inode_info *oi1 = OCFS2_I(inode1); |
| 976 | struct ocfs2_inode_info *oi2 = OCFS2_I(inode2); |
| 977 | struct buffer_head **tmpbh; |
| 978 | struct inode *tmpinode; |
| 979 | |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 980 | mlog_entry("(inode1 = %llu, inode2 = %llu)\n", |
| 981 | (unsigned long long)oi1->ip_blkno, |
| 982 | (unsigned long long)oi2->ip_blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 983 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 984 | if (*bh1) |
| 985 | *bh1 = NULL; |
| 986 | if (*bh2) |
| 987 | *bh2 = NULL; |
| 988 | |
| 989 | /* we always want to lock the one with the lower lockid first. */ |
| 990 | if (oi1->ip_blkno != oi2->ip_blkno) { |
| 991 | if (oi1->ip_blkno < oi2->ip_blkno) { |
| 992 | /* switch id1 and id2 around */ |
| 993 | mlog(0, "switching them around...\n"); |
| 994 | tmpbh = bh2; |
| 995 | bh2 = bh1; |
| 996 | bh1 = tmpbh; |
| 997 | |
| 998 | tmpinode = inode2; |
| 999 | inode2 = inode1; |
| 1000 | inode1 = tmpinode; |
| 1001 | } |
| 1002 | /* lock id2 */ |
Jan Kara | cb25797 | 2009-06-04 15:26:50 +0200 | [diff] [blame] | 1003 | status = ocfs2_inode_lock_nested(inode2, bh2, 1, |
| 1004 | OI_LS_RENAME1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1005 | if (status < 0) { |
| 1006 | if (status != -ENOENT) |
| 1007 | mlog_errno(status); |
| 1008 | goto bail; |
| 1009 | } |
| 1010 | } |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1011 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1012 | /* lock id1 */ |
Jan Kara | cb25797 | 2009-06-04 15:26:50 +0200 | [diff] [blame] | 1013 | status = ocfs2_inode_lock_nested(inode1, bh1, 1, OI_LS_RENAME2); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1014 | if (status < 0) { |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1015 | /* |
| 1016 | * An error return must mean that no cluster locks |
| 1017 | * were held on function exit. |
| 1018 | */ |
| 1019 | if (oi1->ip_blkno != oi2->ip_blkno) |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1020 | ocfs2_inode_unlock(inode2, 1); |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1021 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1022 | if (status != -ENOENT) |
| 1023 | mlog_errno(status); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1024 | } |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1025 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1026 | bail: |
| 1027 | mlog_exit(status); |
| 1028 | return status; |
| 1029 | } |
| 1030 | |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1031 | static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2) |
| 1032 | { |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1033 | ocfs2_inode_unlock(inode1, 1); |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1034 | |
| 1035 | if (inode1 != inode2) |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1036 | ocfs2_inode_unlock(inode2, 1); |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1037 | } |
| 1038 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1039 | static int ocfs2_rename(struct inode *old_dir, |
| 1040 | struct dentry *old_dentry, |
| 1041 | struct inode *new_dir, |
| 1042 | struct dentry *new_dentry) |
| 1043 | { |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1044 | int status = 0, rename_lock = 0, parents_locked = 0, target_exists = 0; |
| 1045 | int old_child_locked = 0, new_child_locked = 0, update_dot_dot = 0; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1046 | struct inode *old_inode = old_dentry->d_inode; |
| 1047 | struct inode *new_inode = new_dentry->d_inode; |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1048 | struct inode *orphan_dir = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1049 | struct ocfs2_dinode *newfe = NULL; |
| 1050 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1051 | struct buffer_head *newfe_bh = NULL; |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1052 | struct buffer_head *old_inode_bh = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1053 | struct ocfs2_super *osb = NULL; |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 1054 | u64 newfe_blkno, old_de_ino; |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 1055 | handle_t *handle = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1056 | struct buffer_head *old_dir_bh = NULL; |
| 1057 | struct buffer_head *new_dir_bh = NULL; |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1058 | nlink_t old_dir_nlink = old_dir->i_nlink; |
Sunil Mushran | 480214d | 2007-08-06 15:11:56 -0700 | [diff] [blame] | 1059 | struct ocfs2_dinode *old_di; |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1060 | struct ocfs2_dir_lookup_result old_inode_dot_dot_res = { NULL, }; |
| 1061 | struct ocfs2_dir_lookup_result target_lookup_res = { NULL, }; |
| 1062 | struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, }; |
| 1063 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; |
| 1064 | struct ocfs2_dir_lookup_result target_insert = { NULL, }; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1065 | |
| 1066 | /* At some point it might be nice to break this function up a |
| 1067 | * bit. */ |
| 1068 | |
| 1069 | mlog_entry("(0x%p, 0x%p, 0x%p, 0x%p, from='%.*s' to='%.*s')\n", |
| 1070 | old_dir, old_dentry, new_dir, new_dentry, |
| 1071 | old_dentry->d_name.len, old_dentry->d_name.name, |
| 1072 | new_dentry->d_name.len, new_dentry->d_name.name); |
| 1073 | |
Christoph Hellwig | 871a293 | 2010-03-03 09:05:07 -0500 | [diff] [blame] | 1074 | dquot_initialize(old_dir); |
| 1075 | dquot_initialize(new_dir); |
Christoph Hellwig | 907f455 | 2010-03-03 09:05:06 -0500 | [diff] [blame] | 1076 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1077 | osb = OCFS2_SB(old_dir->i_sb); |
| 1078 | |
| 1079 | if (new_inode) { |
| 1080 | if (!igrab(new_inode)) |
| 1081 | BUG(); |
| 1082 | } |
| 1083 | |
Uwe Kleine-König | 1b3c371 | 2007-02-17 19:23:03 +0100 | [diff] [blame] | 1084 | /* Assume a directory hierarchy thusly: |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1085 | * a/b/c |
| 1086 | * a/d |
| 1087 | * a,b,c, and d are all directories. |
| 1088 | * |
| 1089 | * from cwd of 'a' on both nodes: |
| 1090 | * node1: mv b/c d |
| 1091 | * node2: mv d b/c |
| 1092 | * |
| 1093 | * And that's why, just like the VFS, we need a file system |
| 1094 | * rename lock. */ |
Jan Kara | 5dabd69 | 2008-02-21 18:00:00 +0100 | [diff] [blame] | 1095 | if (old_dir != new_dir && S_ISDIR(old_inode->i_mode)) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1096 | status = ocfs2_rename_lock(osb); |
| 1097 | if (status < 0) { |
| 1098 | mlog_errno(status); |
| 1099 | goto bail; |
| 1100 | } |
| 1101 | rename_lock = 1; |
| 1102 | } |
| 1103 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1104 | /* 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] | 1105 | status = ocfs2_double_lock(osb, &old_dir_bh, old_dir, |
| 1106 | &new_dir_bh, new_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1107 | if (status < 0) { |
| 1108 | mlog_errno(status); |
| 1109 | goto bail; |
| 1110 | } |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1111 | parents_locked = 1; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1112 | |
| 1113 | /* make sure both dirs have bhs |
| 1114 | * get an extra ref on old_dir_bh if old==new */ |
| 1115 | if (!new_dir_bh) { |
| 1116 | if (old_dir_bh) { |
| 1117 | new_dir_bh = old_dir_bh; |
| 1118 | get_bh(new_dir_bh); |
| 1119 | } else { |
| 1120 | mlog(ML_ERROR, "no old_dir_bh!\n"); |
| 1121 | status = -EIO; |
| 1122 | goto bail; |
| 1123 | } |
| 1124 | } |
| 1125 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1126 | /* |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1127 | * Aside from allowing a meta data update, the locking here |
Mark Fasheh | 34d024f | 2007-09-24 15:56:19 -0700 | [diff] [blame] | 1128 | * also ensures that the downconvert thread on other nodes |
| 1129 | * won't have to concurrently downconvert the inode and the |
| 1130 | * dentry locks. |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1131 | */ |
Jan Kara | cb25797 | 2009-06-04 15:26:50 +0200 | [diff] [blame] | 1132 | status = ocfs2_inode_lock_nested(old_inode, &old_inode_bh, 1, |
| 1133 | OI_LS_PARENT); |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1134 | if (status < 0) { |
| 1135 | if (status != -ENOENT) |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1136 | mlog_errno(status); |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1137 | goto bail; |
| 1138 | } |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1139 | old_child_locked = 1; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1140 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1141 | status = ocfs2_remote_dentry_delete(old_dentry); |
| 1142 | if (status < 0) { |
| 1143 | mlog_errno(status); |
| 1144 | goto bail; |
| 1145 | } |
| 1146 | |
| 1147 | if (S_ISDIR(old_inode->i_mode)) { |
Mark Fasheh | 38760e2 | 2007-09-11 17:21:56 -0700 | [diff] [blame] | 1148 | u64 old_inode_parent; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1149 | |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1150 | update_dot_dot = 1; |
Mark Fasheh | 38760e2 | 2007-09-11 17:21:56 -0700 | [diff] [blame] | 1151 | status = ocfs2_find_files_on_disk("..", 2, &old_inode_parent, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1152 | old_inode, |
| 1153 | &old_inode_dot_dot_res); |
Mark Fasheh | 38760e2 | 2007-09-11 17:21:56 -0700 | [diff] [blame] | 1154 | if (status) { |
| 1155 | status = -EIO; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1156 | goto bail; |
Mark Fasheh | 38760e2 | 2007-09-11 17:21:56 -0700 | [diff] [blame] | 1157 | } |
| 1158 | |
| 1159 | if (old_inode_parent != OCFS2_I(old_dir)->ip_blkno) { |
| 1160 | status = -EIO; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1161 | goto bail; |
Mark Fasheh | 38760e2 | 2007-09-11 17:21:56 -0700 | [diff] [blame] | 1162 | } |
| 1163 | |
| 1164 | if (!new_inode && new_dir != old_dir && |
Mark Fasheh | 198a1ca | 2008-11-20 17:54:57 -0800 | [diff] [blame] | 1165 | new_dir->i_nlink >= ocfs2_link_max(osb)) { |
Mark Fasheh | 38760e2 | 2007-09-11 17:21:56 -0700 | [diff] [blame] | 1166 | status = -EMLINK; |
| 1167 | goto bail; |
| 1168 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1169 | } |
| 1170 | |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 1171 | status = ocfs2_lookup_ino_from_name(old_dir, old_dentry->d_name.name, |
| 1172 | old_dentry->d_name.len, |
| 1173 | &old_de_ino); |
| 1174 | if (status) { |
| 1175 | status = -ENOENT; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1176 | goto bail; |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 1177 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1178 | |
| 1179 | /* |
| 1180 | * Check for inode number is _not_ due to possible IO errors. |
| 1181 | * We might rmdir the source, keep it as pwd of some process |
| 1182 | * and merrily kill the link to whatever was created under the |
| 1183 | * same name. Goodbye sticky bit ;-< |
| 1184 | */ |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 1185 | if (old_de_ino != OCFS2_I(old_inode)->ip_blkno) { |
| 1186 | status = -ENOENT; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1187 | goto bail; |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 1188 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1189 | |
| 1190 | /* check if the target already exists (in which case we need |
| 1191 | * to delete it */ |
| 1192 | status = ocfs2_find_files_on_disk(new_dentry->d_name.name, |
| 1193 | new_dentry->d_name.len, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1194 | &newfe_blkno, new_dir, |
| 1195 | &target_lookup_res); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1196 | /* The only error we allow here is -ENOENT because the new |
| 1197 | * file not existing is perfectly valid. */ |
| 1198 | if ((status < 0) && (status != -ENOENT)) { |
| 1199 | /* If we cannot find the file specified we should just */ |
| 1200 | /* return the error... */ |
| 1201 | mlog_errno(status); |
| 1202 | goto bail; |
| 1203 | } |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1204 | if (status == 0) |
| 1205 | target_exists = 1; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1206 | |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1207 | if (!target_exists && new_inode) { |
Srinivas Eeda | e325a88 | 2007-10-31 16:49:43 -0700 | [diff] [blame] | 1208 | /* |
| 1209 | * Target was unlinked by another node while we were |
| 1210 | * waiting to get to ocfs2_rename(). There isn't |
| 1211 | * anything we can do here to help the situation, so |
| 1212 | * bubble up the appropriate error. |
| 1213 | */ |
| 1214 | status = -ENOENT; |
| 1215 | goto bail; |
| 1216 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1217 | |
| 1218 | /* In case we need to overwrite an existing file, we blow it |
| 1219 | * away first */ |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1220 | if (target_exists) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1221 | /* VFS didn't think there existed an inode here, but |
| 1222 | * someone else in the cluster must have raced our |
| 1223 | * rename to create one. Today we error cleanly, in |
| 1224 | * the future we should consider calling iget to build |
| 1225 | * a new struct inode for this entry. */ |
| 1226 | if (!new_inode) { |
| 1227 | status = -EACCES; |
| 1228 | |
| 1229 | mlog(0, "We found an inode for name %.*s but VFS " |
| 1230 | "didn't give us one.\n", new_dentry->d_name.len, |
| 1231 | new_dentry->d_name.name); |
| 1232 | goto bail; |
| 1233 | } |
| 1234 | |
| 1235 | if (OCFS2_I(new_inode)->ip_blkno != newfe_blkno) { |
| 1236 | status = -EACCES; |
| 1237 | |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1238 | mlog(0, "Inode %llu and dir %llu disagree. flags = %x\n", |
| 1239 | (unsigned long long)OCFS2_I(new_inode)->ip_blkno, |
| 1240 | (unsigned long long)newfe_blkno, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1241 | OCFS2_I(new_inode)->ip_flags); |
| 1242 | goto bail; |
| 1243 | } |
| 1244 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1245 | status = ocfs2_inode_lock(new_inode, &newfe_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1246 | if (status < 0) { |
| 1247 | if (status != -ENOENT) |
| 1248 | mlog_errno(status); |
| 1249 | goto bail; |
| 1250 | } |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1251 | new_child_locked = 1; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1252 | |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1253 | status = ocfs2_remote_dentry_delete(new_dentry); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1254 | if (status < 0) { |
| 1255 | mlog_errno(status); |
| 1256 | goto bail; |
| 1257 | } |
| 1258 | |
| 1259 | newfe = (struct ocfs2_dinode *) newfe_bh->b_data; |
| 1260 | |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1261 | mlog(0, "aha rename over existing... new_blkno=%llu " |
| 1262 | "newfebh=%p bhblocknr=%llu\n", |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1263 | (unsigned long long)newfe_blkno, newfe_bh, newfe_bh ? |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1264 | (unsigned long long)newfe_bh->b_blocknr : 0ULL); |
| 1265 | |
| 1266 | if (S_ISDIR(new_inode->i_mode) || (new_inode->i_nlink == 1)) { |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1267 | status = ocfs2_prepare_orphan_dir(osb, &orphan_dir, |
Tao Ma | 19bd341 | 2009-08-18 11:44:10 +0800 | [diff] [blame] | 1268 | OCFS2_I(new_inode)->ip_blkno, |
| 1269 | orphan_name, &orphan_insert); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1270 | if (status < 0) { |
| 1271 | mlog_errno(status); |
| 1272 | goto bail; |
| 1273 | } |
| 1274 | } |
| 1275 | } else { |
| 1276 | BUG_ON(new_dentry->d_parent->d_inode != new_dir); |
| 1277 | |
| 1278 | status = ocfs2_check_dir_for_entry(new_dir, |
| 1279 | new_dentry->d_name.name, |
| 1280 | new_dentry->d_name.len); |
| 1281 | if (status) |
| 1282 | goto bail; |
| 1283 | |
| 1284 | status = ocfs2_prepare_dir_for_insert(osb, new_dir, new_dir_bh, |
| 1285 | new_dentry->d_name.name, |
| 1286 | new_dentry->d_name.len, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1287 | &target_insert); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1288 | if (status < 0) { |
| 1289 | mlog_errno(status); |
| 1290 | goto bail; |
| 1291 | } |
| 1292 | } |
| 1293 | |
Jan Kara | a90714c | 2008-10-09 19:38:40 +0200 | [diff] [blame] | 1294 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1295 | if (IS_ERR(handle)) { |
| 1296 | status = PTR_ERR(handle); |
| 1297 | handle = NULL; |
| 1298 | mlog_errno(status); |
| 1299 | goto bail; |
| 1300 | } |
| 1301 | |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1302 | if (target_exists) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1303 | if (S_ISDIR(new_inode->i_mode)) { |
Mark Fasheh | b80b549 | 2009-02-18 11:41:38 -0800 | [diff] [blame] | 1304 | if (new_inode->i_nlink != 2 || |
| 1305 | !ocfs2_empty_dir(new_inode)) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1306 | status = -ENOTEMPTY; |
| 1307 | goto bail; |
| 1308 | } |
| 1309 | } |
Joel Becker | 0cf2f76 | 2009-02-12 16:41:25 -0800 | [diff] [blame] | 1310 | status = ocfs2_journal_access_di(handle, INODE_CACHE(new_inode), |
| 1311 | newfe_bh, |
Joel Becker | 13723d0 | 2008-10-17 19:25:01 -0700 | [diff] [blame] | 1312 | OCFS2_JOURNAL_ACCESS_WRITE); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1313 | if (status < 0) { |
| 1314 | mlog_errno(status); |
| 1315 | goto bail; |
| 1316 | } |
| 1317 | |
| 1318 | if (S_ISDIR(new_inode->i_mode) || |
Mark Fasheh | 198a1ca | 2008-11-20 17:54:57 -0800 | [diff] [blame] | 1319 | (ocfs2_read_links_count(newfe) == 1)) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1320 | status = ocfs2_orphan_add(osb, handle, new_inode, |
Tristan Ye | 3939fda | 2010-03-19 09:21:09 +0800 | [diff] [blame] | 1321 | newfe_bh, orphan_name, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1322 | &orphan_insert, orphan_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1323 | if (status < 0) { |
| 1324 | mlog_errno(status); |
| 1325 | goto bail; |
| 1326 | } |
| 1327 | } |
| 1328 | |
| 1329 | /* change the dirent to point to the correct inode */ |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1330 | status = ocfs2_update_entry(new_dir, handle, &target_lookup_res, |
| 1331 | old_inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1332 | if (status < 0) { |
| 1333 | mlog_errno(status); |
| 1334 | goto bail; |
| 1335 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1336 | new_dir->i_version++; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1337 | |
| 1338 | if (S_ISDIR(new_inode->i_mode)) |
Mark Fasheh | 198a1ca | 2008-11-20 17:54:57 -0800 | [diff] [blame] | 1339 | ocfs2_set_links_count(newfe, 0); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1340 | else |
Mark Fasheh | 198a1ca | 2008-11-20 17:54:57 -0800 | [diff] [blame] | 1341 | ocfs2_add_links_count(newfe, -1); |
Joel Becker | ec20cec | 2010-03-19 14:13:52 -0700 | [diff] [blame] | 1342 | ocfs2_journal_dirty(handle, newfe_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1343 | } else { |
| 1344 | /* if the name was not found in new_dir, add it now */ |
| 1345 | status = ocfs2_add_entry(handle, new_dentry, old_inode, |
| 1346 | OCFS2_I(old_inode)->ip_blkno, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1347 | new_dir_bh, &target_insert); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1348 | } |
| 1349 | |
| 1350 | old_inode->i_ctime = CURRENT_TIME; |
| 1351 | mark_inode_dirty(old_inode); |
Sunil Mushran | 480214d | 2007-08-06 15:11:56 -0700 | [diff] [blame] | 1352 | |
Joel Becker | 0cf2f76 | 2009-02-12 16:41:25 -0800 | [diff] [blame] | 1353 | status = ocfs2_journal_access_di(handle, INODE_CACHE(old_inode), |
| 1354 | old_inode_bh, |
Joel Becker | 13723d0 | 2008-10-17 19:25:01 -0700 | [diff] [blame] | 1355 | OCFS2_JOURNAL_ACCESS_WRITE); |
Sunil Mushran | 480214d | 2007-08-06 15:11:56 -0700 | [diff] [blame] | 1356 | if (status >= 0) { |
| 1357 | old_di = (struct ocfs2_dinode *) old_inode_bh->b_data; |
| 1358 | |
| 1359 | old_di->i_ctime = cpu_to_le64(old_inode->i_ctime.tv_sec); |
| 1360 | old_di->i_ctime_nsec = cpu_to_le32(old_inode->i_ctime.tv_nsec); |
Joel Becker | ec20cec | 2010-03-19 14:13:52 -0700 | [diff] [blame] | 1361 | ocfs2_journal_dirty(handle, old_inode_bh); |
Sunil Mushran | 480214d | 2007-08-06 15:11:56 -0700 | [diff] [blame] | 1362 | } else |
| 1363 | mlog_errno(status); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1364 | |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 1365 | /* |
| 1366 | * Now that the name has been added to new_dir, remove the old name. |
| 1367 | * |
| 1368 | * We don't keep any directory entry context around until now |
| 1369 | * because the insert might have changed the type of directory |
| 1370 | * we're dealing with. |
| 1371 | */ |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1372 | status = ocfs2_find_entry(old_dentry->d_name.name, |
| 1373 | old_dentry->d_name.len, old_dir, |
| 1374 | &old_entry_lookup); |
| 1375 | if (status) |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 1376 | goto bail; |
Mark Fasheh | 5b6a3a2 | 2007-09-13 16:33:54 -0700 | [diff] [blame] | 1377 | |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1378 | status = ocfs2_delete_entry(handle, old_dir, &old_entry_lookup); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1379 | if (status < 0) { |
| 1380 | mlog_errno(status); |
| 1381 | goto bail; |
| 1382 | } |
| 1383 | |
| 1384 | if (new_inode) { |
| 1385 | new_inode->i_nlink--; |
| 1386 | new_inode->i_ctime = CURRENT_TIME; |
| 1387 | } |
| 1388 | old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME; |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1389 | |
| 1390 | if (update_dot_dot) { |
| 1391 | status = ocfs2_update_entry(old_inode, handle, |
| 1392 | &old_inode_dot_dot_res, new_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1393 | old_dir->i_nlink--; |
| 1394 | if (new_inode) { |
| 1395 | new_inode->i_nlink--; |
| 1396 | } else { |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 1397 | inc_nlink(new_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1398 | mark_inode_dirty(new_dir); |
| 1399 | } |
| 1400 | } |
| 1401 | mark_inode_dirty(old_dir); |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1402 | ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh); |
| 1403 | if (new_inode) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1404 | mark_inode_dirty(new_inode); |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1405 | ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh); |
| 1406 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1407 | |
Mark Fasheh | 592282c | 2007-01-02 17:59:40 -0800 | [diff] [blame] | 1408 | if (old_dir != new_dir) { |
| 1409 | /* Keep the same times on both directories.*/ |
| 1410 | new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime; |
| 1411 | |
| 1412 | /* |
| 1413 | * This will also pick up the i_nlink change from the |
| 1414 | * block above. |
| 1415 | */ |
| 1416 | ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh); |
| 1417 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1418 | |
| 1419 | if (old_dir_nlink != old_dir->i_nlink) { |
| 1420 | if (!old_dir_bh) { |
| 1421 | mlog(ML_ERROR, "need to change nlink for old dir " |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1422 | "%llu from %d to %d but bh is NULL!\n", |
| 1423 | (unsigned long long)OCFS2_I(old_dir)->ip_blkno, |
| 1424 | (int)old_dir_nlink, old_dir->i_nlink); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1425 | } else { |
| 1426 | struct ocfs2_dinode *fe; |
Joel Becker | 0cf2f76 | 2009-02-12 16:41:25 -0800 | [diff] [blame] | 1427 | status = ocfs2_journal_access_di(handle, |
| 1428 | INODE_CACHE(old_dir), |
| 1429 | old_dir_bh, |
| 1430 | OCFS2_JOURNAL_ACCESS_WRITE); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1431 | fe = (struct ocfs2_dinode *) old_dir_bh->b_data; |
Mark Fasheh | 198a1ca | 2008-11-20 17:54:57 -0800 | [diff] [blame] | 1432 | ocfs2_set_links_count(fe, old_dir->i_nlink); |
Joel Becker | ec20cec | 2010-03-19 14:13:52 -0700 | [diff] [blame] | 1433 | ocfs2_journal_dirty(handle, old_dir_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1434 | } |
| 1435 | } |
Mark Fasheh | 379dfe9 | 2006-09-08 14:21:03 -0700 | [diff] [blame] | 1436 | ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1437 | status = 0; |
| 1438 | bail: |
| 1439 | if (rename_lock) |
| 1440 | ocfs2_rename_unlock(osb); |
| 1441 | |
| 1442 | if (handle) |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 1443 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1444 | |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1445 | if (parents_locked) |
| 1446 | ocfs2_double_unlock(old_dir, new_dir); |
| 1447 | |
| 1448 | if (old_child_locked) |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1449 | ocfs2_inode_unlock(old_inode, 1); |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1450 | |
| 1451 | if (new_child_locked) |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1452 | ocfs2_inode_unlock(new_inode, 1); |
Mark Fasheh | 8d5596c | 2006-10-06 15:04:51 -0700 | [diff] [blame] | 1453 | |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1454 | if (orphan_dir) { |
| 1455 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1456 | ocfs2_inode_unlock(orphan_dir, 1); |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1457 | mutex_unlock(&orphan_dir->i_mutex); |
| 1458 | iput(orphan_dir); |
| 1459 | } |
| 1460 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1461 | if (new_inode) |
| 1462 | sync_mapping_buffers(old_inode->i_mapping); |
| 1463 | |
| 1464 | if (new_inode) |
| 1465 | iput(new_inode); |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1466 | |
| 1467 | ocfs2_free_dir_lookup_result(&target_lookup_res); |
| 1468 | ocfs2_free_dir_lookup_result(&old_entry_lookup); |
| 1469 | ocfs2_free_dir_lookup_result(&old_inode_dot_dot_res); |
| 1470 | ocfs2_free_dir_lookup_result(&orphan_insert); |
| 1471 | ocfs2_free_dir_lookup_result(&target_insert); |
| 1472 | |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 1473 | brelse(newfe_bh); |
| 1474 | brelse(old_inode_bh); |
| 1475 | brelse(old_dir_bh); |
| 1476 | brelse(new_dir_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1477 | |
| 1478 | mlog_exit(status); |
| 1479 | |
| 1480 | return status; |
| 1481 | } |
| 1482 | |
| 1483 | /* |
| 1484 | * we expect i_size = strlen(symname). Copy symname into the file |
| 1485 | * data, including the null terminator. |
| 1486 | */ |
| 1487 | static int ocfs2_create_symlink_data(struct ocfs2_super *osb, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 1488 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1489 | struct inode *inode, |
| 1490 | const char *symname) |
| 1491 | { |
| 1492 | struct buffer_head **bhs = NULL; |
| 1493 | const char *c; |
| 1494 | struct super_block *sb = osb->sb; |
Mark Fasheh | 4f902c3 | 2007-03-09 16:26:50 -0800 | [diff] [blame] | 1495 | u64 p_blkno, p_blocks; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1496 | int virtual, blocks, status, i, bytes_left; |
| 1497 | |
| 1498 | bytes_left = i_size_read(inode) + 1; |
| 1499 | /* we can't trust i_blocks because we're actually going to |
| 1500 | * write i_size + 1 bytes. */ |
| 1501 | blocks = (bytes_left + sb->s_blocksize - 1) >> sb->s_blocksize_bits; |
| 1502 | |
Andrew Morton | 5515eff | 2006-03-26 01:37:53 -0800 | [diff] [blame] | 1503 | mlog_entry("i_blocks = %llu, i_size = %llu, blocks = %d\n", |
| 1504 | (unsigned long long)inode->i_blocks, |
| 1505 | i_size_read(inode), blocks); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1506 | |
| 1507 | /* Sanity check -- make sure we're going to fit. */ |
| 1508 | if (bytes_left > |
| 1509 | ocfs2_clusters_to_bytes(sb, OCFS2_I(inode)->ip_clusters)) { |
| 1510 | status = -EIO; |
| 1511 | mlog_errno(status); |
| 1512 | goto bail; |
| 1513 | } |
| 1514 | |
| 1515 | bhs = kcalloc(blocks, sizeof(struct buffer_head *), GFP_KERNEL); |
| 1516 | if (!bhs) { |
| 1517 | status = -ENOMEM; |
| 1518 | mlog_errno(status); |
| 1519 | goto bail; |
| 1520 | } |
| 1521 | |
Mark Fasheh | 49cb8d2 | 2007-03-09 16:21:46 -0800 | [diff] [blame] | 1522 | status = ocfs2_extent_map_get_blocks(inode, 0, &p_blkno, &p_blocks, |
| 1523 | NULL); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1524 | if (status < 0) { |
| 1525 | mlog_errno(status); |
| 1526 | goto bail; |
| 1527 | } |
| 1528 | |
| 1529 | /* links can never be larger than one cluster so we know this |
| 1530 | * is all going to be contiguous, but do a sanity check |
| 1531 | * anyway. */ |
| 1532 | if ((p_blocks << sb->s_blocksize_bits) < bytes_left) { |
| 1533 | status = -EIO; |
| 1534 | mlog_errno(status); |
| 1535 | goto bail; |
| 1536 | } |
| 1537 | |
| 1538 | virtual = 0; |
| 1539 | while(bytes_left > 0) { |
| 1540 | c = &symname[virtual * sb->s_blocksize]; |
| 1541 | |
| 1542 | bhs[virtual] = sb_getblk(sb, p_blkno); |
| 1543 | if (!bhs[virtual]) { |
| 1544 | status = -ENOMEM; |
| 1545 | mlog_errno(status); |
| 1546 | goto bail; |
| 1547 | } |
Joel Becker | 8cb471e | 2009-02-10 20:00:41 -0800 | [diff] [blame] | 1548 | ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), |
| 1549 | bhs[virtual]); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1550 | |
Joel Becker | 0cf2f76 | 2009-02-12 16:41:25 -0800 | [diff] [blame] | 1551 | status = ocfs2_journal_access(handle, INODE_CACHE(inode), |
| 1552 | bhs[virtual], |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1553 | OCFS2_JOURNAL_ACCESS_CREATE); |
| 1554 | if (status < 0) { |
| 1555 | mlog_errno(status); |
| 1556 | goto bail; |
| 1557 | } |
| 1558 | |
| 1559 | memset(bhs[virtual]->b_data, 0, sb->s_blocksize); |
| 1560 | |
| 1561 | memcpy(bhs[virtual]->b_data, c, |
| 1562 | (bytes_left > sb->s_blocksize) ? sb->s_blocksize : |
| 1563 | bytes_left); |
| 1564 | |
Joel Becker | ec20cec | 2010-03-19 14:13:52 -0700 | [diff] [blame] | 1565 | ocfs2_journal_dirty(handle, bhs[virtual]); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1566 | |
| 1567 | virtual++; |
| 1568 | p_blkno++; |
| 1569 | bytes_left -= sb->s_blocksize; |
| 1570 | } |
| 1571 | |
| 1572 | status = 0; |
| 1573 | bail: |
| 1574 | |
| 1575 | if (bhs) { |
| 1576 | for(i = 0; i < blocks; i++) |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 1577 | brelse(bhs[i]); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1578 | kfree(bhs); |
| 1579 | } |
| 1580 | |
| 1581 | mlog_exit(status); |
| 1582 | return status; |
| 1583 | } |
| 1584 | |
| 1585 | static int ocfs2_symlink(struct inode *dir, |
| 1586 | struct dentry *dentry, |
| 1587 | const char *symname) |
| 1588 | { |
| 1589 | int status, l, credits; |
| 1590 | u64 newsize; |
| 1591 | struct ocfs2_super *osb = NULL; |
| 1592 | struct inode *inode = NULL; |
| 1593 | struct super_block *sb; |
| 1594 | struct buffer_head *new_fe_bh = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1595 | struct buffer_head *parent_fe_bh = NULL; |
| 1596 | struct ocfs2_dinode *fe = NULL; |
| 1597 | struct ocfs2_dinode *dirfe; |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 1598 | handle_t *handle = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1599 | struct ocfs2_alloc_context *inode_ac = NULL; |
| 1600 | struct ocfs2_alloc_context *data_ac = NULL; |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 1601 | struct ocfs2_alloc_context *xattr_ac = NULL; |
| 1602 | int want_clusters = 0; |
| 1603 | int xattr_credits = 0; |
| 1604 | struct ocfs2_security_xattr_info si = { |
| 1605 | .enable = 1, |
| 1606 | }; |
Jan Kara | a90714c | 2008-10-09 19:38:40 +0200 | [diff] [blame] | 1607 | int did_quota = 0, did_quota_inode = 0; |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1608 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
Joel Becker | 547ba7c | 2010-05-10 11:56:52 -0700 | [diff] [blame] | 1609 | sigset_t oldset; |
| 1610 | int did_block_signals = 0; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1611 | |
| 1612 | mlog_entry("(0x%p, 0x%p, symname='%s' actual='%.*s')\n", dir, |
| 1613 | dentry, symname, dentry->d_name.len, dentry->d_name.name); |
| 1614 | |
Christoph Hellwig | 871a293 | 2010-03-03 09:05:07 -0500 | [diff] [blame] | 1615 | dquot_initialize(dir); |
Christoph Hellwig | 907f455 | 2010-03-03 09:05:06 -0500 | [diff] [blame] | 1616 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1617 | sb = dir->i_sb; |
| 1618 | osb = OCFS2_SB(sb); |
| 1619 | |
| 1620 | l = strlen(symname) + 1; |
| 1621 | |
| 1622 | credits = ocfs2_calc_symlink_credits(sb); |
| 1623 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1624 | /* lock the parent directory */ |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1625 | status = ocfs2_inode_lock(dir, &parent_fe_bh, 1); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1626 | if (status < 0) { |
| 1627 | if (status != -ENOENT) |
| 1628 | mlog_errno(status); |
Mark Fasheh | 6d8fc40 | 2006-10-06 11:54:33 -0700 | [diff] [blame] | 1629 | return status; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1630 | } |
| 1631 | |
| 1632 | dirfe = (struct ocfs2_dinode *) parent_fe_bh->b_data; |
Mark Fasheh | 198a1ca | 2008-11-20 17:54:57 -0800 | [diff] [blame] | 1633 | if (!ocfs2_read_links_count(dirfe)) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1634 | /* can't make a file in a deleted directory. */ |
| 1635 | status = -ENOENT; |
| 1636 | goto bail; |
| 1637 | } |
| 1638 | |
| 1639 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
| 1640 | dentry->d_name.len); |
| 1641 | if (status) |
| 1642 | goto bail; |
| 1643 | |
| 1644 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_fe_bh, |
| 1645 | dentry->d_name.name, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1646 | dentry->d_name.len, &lookup); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1647 | if (status < 0) { |
| 1648 | mlog_errno(status); |
| 1649 | goto bail; |
| 1650 | } |
| 1651 | |
Mark Fasheh | da5cbf2 | 2006-10-06 18:34:35 -0700 | [diff] [blame] | 1652 | status = ocfs2_reserve_new_inode(osb, &inode_ac); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1653 | if (status < 0) { |
| 1654 | if (status != -ENOSPC) |
| 1655 | mlog_errno(status); |
| 1656 | goto bail; |
| 1657 | } |
| 1658 | |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 1659 | inode = ocfs2_get_init_inode(dir, S_IFLNK | S_IRWXUGO); |
| 1660 | if (!inode) { |
| 1661 | status = -ENOMEM; |
| 1662 | mlog_errno(status); |
| 1663 | goto bail; |
| 1664 | } |
| 1665 | |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 1666 | /* get security xattr */ |
| 1667 | status = ocfs2_init_security_get(inode, dir, &si); |
| 1668 | if (status) { |
| 1669 | if (status == -EOPNOTSUPP) |
| 1670 | si.enable = 0; |
| 1671 | else { |
| 1672 | mlog_errno(status); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1673 | goto bail; |
| 1674 | } |
| 1675 | } |
| 1676 | |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 1677 | /* calculate meta data/clusters for setting security xattr */ |
| 1678 | if (si.enable) { |
| 1679 | status = ocfs2_calc_security_init(dir, &si, &want_clusters, |
| 1680 | &xattr_credits, &xattr_ac); |
| 1681 | if (status < 0) { |
| 1682 | mlog_errno(status); |
| 1683 | goto bail; |
| 1684 | } |
| 1685 | } |
| 1686 | |
| 1687 | /* don't reserve bitmap space for fast symlinks. */ |
| 1688 | if (l > ocfs2_fast_symlink_chars(sb)) |
| 1689 | want_clusters += 1; |
| 1690 | |
| 1691 | status = ocfs2_reserve_clusters(osb, want_clusters, &data_ac); |
| 1692 | if (status < 0) { |
| 1693 | if (status != -ENOSPC) |
| 1694 | mlog_errno(status); |
| 1695 | goto bail; |
| 1696 | } |
| 1697 | |
| 1698 | handle = ocfs2_start_trans(osb, credits + xattr_credits); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1699 | if (IS_ERR(handle)) { |
| 1700 | status = PTR_ERR(handle); |
| 1701 | handle = NULL; |
| 1702 | mlog_errno(status); |
| 1703 | goto bail; |
| 1704 | } |
| 1705 | |
Joel Becker | 547ba7c | 2010-05-10 11:56:52 -0700 | [diff] [blame] | 1706 | /* Starting to change things, restart is no longer possible. */ |
| 1707 | ocfs2_block_signals(&oldset); |
| 1708 | did_block_signals = 1; |
| 1709 | |
Christoph Hellwig | 63936dd | 2010-03-03 09:05:01 -0500 | [diff] [blame] | 1710 | status = dquot_alloc_inode(inode); |
| 1711 | if (status) |
Jan Kara | a90714c | 2008-10-09 19:38:40 +0200 | [diff] [blame] | 1712 | goto bail; |
Jan Kara | a90714c | 2008-10-09 19:38:40 +0200 | [diff] [blame] | 1713 | did_quota_inode = 1; |
| 1714 | |
Tao Ma | 19bd341 | 2009-08-18 11:44:10 +0800 | [diff] [blame] | 1715 | mlog_entry("(0x%p, 0x%p, %d, '%.*s')\n", dir, dentry, |
| 1716 | inode->i_mode, dentry->d_name.len, |
| 1717 | dentry->d_name.name); |
| 1718 | |
| 1719 | status = ocfs2_mknod_locked(osb, dir, inode, |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 1720 | 0, &new_fe_bh, parent_fe_bh, handle, |
| 1721 | inode_ac); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1722 | if (status < 0) { |
| 1723 | mlog_errno(status); |
| 1724 | goto bail; |
| 1725 | } |
| 1726 | |
| 1727 | fe = (struct ocfs2_dinode *) new_fe_bh->b_data; |
| 1728 | inode->i_rdev = 0; |
| 1729 | newsize = l - 1; |
| 1730 | if (l > ocfs2_fast_symlink_chars(sb)) { |
Mark Fasheh | dcd0538 | 2007-01-16 11:32:23 -0800 | [diff] [blame] | 1731 | u32 offset = 0; |
| 1732 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1733 | inode->i_op = &ocfs2_symlink_inode_operations; |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 1734 | status = dquot_alloc_space_nodirty(inode, |
| 1735 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
| 1736 | if (status) |
Jan Kara | a90714c | 2008-10-09 19:38:40 +0200 | [diff] [blame] | 1737 | goto bail; |
Jan Kara | a90714c | 2008-10-09 19:38:40 +0200 | [diff] [blame] | 1738 | did_quota = 1; |
Tao Ma | 0eb8d47 | 2008-08-18 17:38:45 +0800 | [diff] [blame] | 1739 | status = ocfs2_add_inode_data(osb, inode, &offset, 1, 0, |
| 1740 | new_fe_bh, |
| 1741 | handle, data_ac, NULL, |
| 1742 | NULL); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1743 | if (status < 0) { |
| 1744 | if (status != -ENOSPC && status != -EINTR) { |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1745 | mlog(ML_ERROR, |
| 1746 | "Failed to extend file to %llu\n", |
| 1747 | (unsigned long long)newsize); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1748 | mlog_errno(status); |
| 1749 | status = -ENOSPC; |
| 1750 | } |
| 1751 | goto bail; |
| 1752 | } |
| 1753 | i_size_write(inode, newsize); |
Mark Fasheh | 8110b07 | 2007-03-22 16:53:23 -0700 | [diff] [blame] | 1754 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1755 | } else { |
| 1756 | inode->i_op = &ocfs2_fast_symlink_inode_operations; |
| 1757 | memcpy((char *) fe->id2.i_symlink, symname, l); |
| 1758 | i_size_write(inode, newsize); |
| 1759 | inode->i_blocks = 0; |
| 1760 | } |
| 1761 | |
| 1762 | status = ocfs2_mark_inode_dirty(handle, inode, new_fe_bh); |
| 1763 | if (status < 0) { |
| 1764 | mlog_errno(status); |
| 1765 | goto bail; |
| 1766 | } |
| 1767 | |
| 1768 | if (!ocfs2_inode_is_fast_symlink(inode)) { |
| 1769 | status = ocfs2_create_symlink_data(osb, handle, inode, |
| 1770 | symname); |
| 1771 | if (status < 0) { |
| 1772 | mlog_errno(status); |
| 1773 | goto bail; |
| 1774 | } |
| 1775 | } |
| 1776 | |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 1777 | if (si.enable) { |
| 1778 | status = ocfs2_init_security_set(handle, inode, new_fe_bh, &si, |
| 1779 | xattr_ac, data_ac); |
| 1780 | if (status < 0) { |
| 1781 | mlog_errno(status); |
| 1782 | goto bail; |
| 1783 | } |
| 1784 | } |
| 1785 | |
Mark Fasheh | a9743fc | 2010-04-23 11:42:22 -0700 | [diff] [blame] | 1786 | /* |
| 1787 | * Do this before adding the entry to the directory. We add |
| 1788 | * also set d_op after success so that ->d_iput() will cleanup |
| 1789 | * the dentry lock even if ocfs2_add_entry() fails below. |
| 1790 | */ |
| 1791 | status = ocfs2_dentry_attach_lock(dentry, inode, OCFS2_I(dir)->ip_blkno); |
| 1792 | if (status) { |
| 1793 | mlog_errno(status); |
| 1794 | goto bail; |
| 1795 | } |
| 1796 | dentry->d_op = &ocfs2_dentry_ops; |
| 1797 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1798 | status = ocfs2_add_entry(handle, dentry, inode, |
| 1799 | le64_to_cpu(fe->i_blkno), parent_fe_bh, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1800 | &lookup); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1801 | if (status < 0) { |
| 1802 | mlog_errno(status); |
| 1803 | goto bail; |
| 1804 | } |
| 1805 | |
| 1806 | insert_inode_hash(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1807 | d_instantiate(dentry, inode); |
| 1808 | bail: |
Jan Kara | a90714c | 2008-10-09 19:38:40 +0200 | [diff] [blame] | 1809 | if (status < 0 && did_quota) |
Christoph Hellwig | 5dd4056 | 2010-03-03 09:05:00 -0500 | [diff] [blame] | 1810 | dquot_free_space_nodirty(inode, |
Jan Kara | a90714c | 2008-10-09 19:38:40 +0200 | [diff] [blame] | 1811 | ocfs2_clusters_to_bytes(osb->sb, 1)); |
| 1812 | if (status < 0 && did_quota_inode) |
Christoph Hellwig | 63936dd | 2010-03-03 09:05:01 -0500 | [diff] [blame] | 1813 | dquot_free_inode(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1814 | if (handle) |
Mark Fasheh | 02dc1af | 2006-10-09 16:48:10 -0700 | [diff] [blame] | 1815 | ocfs2_commit_trans(osb, handle); |
Mark Fasheh | 6d8fc40 | 2006-10-06 11:54:33 -0700 | [diff] [blame] | 1816 | |
Mark Fasheh | e63aecb6 | 2007-10-18 15:30:42 -0700 | [diff] [blame] | 1817 | ocfs2_inode_unlock(dir, 1); |
Joel Becker | 547ba7c | 2010-05-10 11:56:52 -0700 | [diff] [blame] | 1818 | if (did_block_signals) |
| 1819 | ocfs2_unblock_signals(&oldset); |
Mark Fasheh | 6d8fc40 | 2006-10-06 11:54:33 -0700 | [diff] [blame] | 1820 | |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 1821 | brelse(new_fe_bh); |
| 1822 | brelse(parent_fe_bh); |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 1823 | kfree(si.name); |
| 1824 | kfree(si.value); |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1825 | ocfs2_free_dir_lookup_result(&lookup); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1826 | if (inode_ac) |
| 1827 | ocfs2_free_alloc_context(inode_ac); |
| 1828 | if (data_ac) |
| 1829 | ocfs2_free_alloc_context(data_ac); |
Tiger Yang | 534eadd | 2008-11-14 11:16:41 +0800 | [diff] [blame] | 1830 | if (xattr_ac) |
| 1831 | ocfs2_free_alloc_context(xattr_ac); |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 1832 | if ((status < 0) && inode) { |
Li Dongyang | ab41fdc | 2010-04-22 16:11:25 +0800 | [diff] [blame] | 1833 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SKIP_ORPHAN_DIR; |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 1834 | clear_nlink(inode); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1835 | iput(inode); |
Tiger Yang | f5d3620 | 2008-11-14 11:15:44 +0800 | [diff] [blame] | 1836 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1837 | |
| 1838 | mlog_exit(status); |
| 1839 | |
| 1840 | return status; |
| 1841 | } |
| 1842 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1843 | static int ocfs2_blkno_stringify(u64 blkno, char *name) |
| 1844 | { |
| 1845 | int status, namelen; |
| 1846 | |
| 1847 | mlog_entry_void(); |
| 1848 | |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 1849 | namelen = snprintf(name, OCFS2_ORPHAN_NAMELEN + 1, "%016llx", |
| 1850 | (long long)blkno); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1851 | if (namelen <= 0) { |
| 1852 | if (namelen) |
| 1853 | status = namelen; |
| 1854 | else |
| 1855 | status = -EINVAL; |
| 1856 | mlog_errno(status); |
| 1857 | goto bail; |
| 1858 | } |
| 1859 | if (namelen != OCFS2_ORPHAN_NAMELEN) { |
| 1860 | status = -EINVAL; |
| 1861 | mlog_errno(status); |
| 1862 | goto bail; |
| 1863 | } |
| 1864 | |
| 1865 | mlog(0, "built filename '%s' for orphan dir (len=%d)\n", name, |
| 1866 | namelen); |
| 1867 | |
| 1868 | status = 0; |
| 1869 | bail: |
| 1870 | mlog_exit(status); |
| 1871 | return status; |
| 1872 | } |
| 1873 | |
Mark Fasheh | dd43bcd | 2010-08-13 15:15:18 -0700 | [diff] [blame] | 1874 | static int ocfs2_lookup_lock_orphan_dir(struct ocfs2_super *osb, |
| 1875 | struct inode **ret_orphan_dir, |
| 1876 | struct buffer_head **ret_orphan_dir_bh) |
| 1877 | { |
| 1878 | struct inode *orphan_dir_inode; |
| 1879 | struct buffer_head *orphan_dir_bh = NULL; |
| 1880 | int ret = 0; |
| 1881 | |
| 1882 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
| 1883 | ORPHAN_DIR_SYSTEM_INODE, |
| 1884 | osb->slot_num); |
| 1885 | if (!orphan_dir_inode) { |
| 1886 | ret = -ENOENT; |
| 1887 | mlog_errno(ret); |
| 1888 | return ret; |
| 1889 | } |
| 1890 | |
| 1891 | mutex_lock(&orphan_dir_inode->i_mutex); |
| 1892 | |
| 1893 | ret = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
| 1894 | if (ret < 0) { |
| 1895 | mutex_unlock(&orphan_dir_inode->i_mutex); |
| 1896 | iput(orphan_dir_inode); |
| 1897 | |
| 1898 | mlog_errno(ret); |
| 1899 | return ret; |
| 1900 | } |
| 1901 | |
| 1902 | *ret_orphan_dir = orphan_dir_inode; |
| 1903 | *ret_orphan_dir_bh = orphan_dir_bh; |
| 1904 | |
| 1905 | return 0; |
| 1906 | } |
| 1907 | |
| 1908 | static int __ocfs2_prepare_orphan_dir(struct inode *orphan_dir_inode, |
| 1909 | struct buffer_head *orphan_dir_bh, |
| 1910 | u64 blkno, |
| 1911 | char *name, |
| 1912 | struct ocfs2_dir_lookup_result *lookup) |
| 1913 | { |
| 1914 | int ret; |
| 1915 | struct ocfs2_super *osb = OCFS2_SB(orphan_dir_inode->i_sb); |
| 1916 | |
| 1917 | ret = ocfs2_blkno_stringify(blkno, name); |
| 1918 | if (ret < 0) { |
| 1919 | mlog_errno(ret); |
| 1920 | return ret; |
| 1921 | } |
| 1922 | |
| 1923 | ret = ocfs2_prepare_dir_for_insert(osb, orphan_dir_inode, |
| 1924 | orphan_dir_bh, name, |
| 1925 | OCFS2_ORPHAN_NAMELEN, lookup); |
| 1926 | if (ret < 0) { |
| 1927 | mlog_errno(ret); |
| 1928 | return ret; |
| 1929 | } |
| 1930 | |
| 1931 | return 0; |
| 1932 | } |
| 1933 | |
| 1934 | /** |
| 1935 | * ocfs2_prepare_orphan_dir() - Prepare an orphan directory for |
| 1936 | * insertion of an orphan. |
| 1937 | * @osb: ocfs2 file system |
| 1938 | * @ret_orphan_dir: Orphan dir inode - returned locked! |
| 1939 | * @blkno: Actual block number of the inode to be inserted into orphan dir. |
| 1940 | * @lookup: dir lookup result, to be passed back into functions like |
| 1941 | * ocfs2_orphan_add |
| 1942 | * |
| 1943 | * Returns zero on success and the ret_orphan_dir, name and lookup |
| 1944 | * fields will be populated. |
| 1945 | * |
| 1946 | * Returns non-zero on failure. |
| 1947 | */ |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1948 | static int ocfs2_prepare_orphan_dir(struct ocfs2_super *osb, |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1949 | struct inode **ret_orphan_dir, |
Tao Ma | 19bd341 | 2009-08-18 11:44:10 +0800 | [diff] [blame] | 1950 | u64 blkno, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1951 | char *name, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1952 | struct ocfs2_dir_lookup_result *lookup) |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1953 | { |
Mark Fasheh | dd43bcd | 2010-08-13 15:15:18 -0700 | [diff] [blame] | 1954 | struct inode *orphan_dir_inode = NULL; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1955 | struct buffer_head *orphan_dir_bh = NULL; |
Mark Fasheh | dd43bcd | 2010-08-13 15:15:18 -0700 | [diff] [blame] | 1956 | int ret = 0; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1957 | |
Mark Fasheh | dd43bcd | 2010-08-13 15:15:18 -0700 | [diff] [blame] | 1958 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir_inode, |
| 1959 | &orphan_dir_bh); |
| 1960 | if (ret < 0) { |
| 1961 | mlog_errno(ret); |
| 1962 | return ret; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1963 | } |
| 1964 | |
Mark Fasheh | dd43bcd | 2010-08-13 15:15:18 -0700 | [diff] [blame] | 1965 | ret = __ocfs2_prepare_orphan_dir(orphan_dir_inode, orphan_dir_bh, |
| 1966 | blkno, name, lookup); |
| 1967 | if (ret < 0) { |
| 1968 | mlog_errno(ret); |
| 1969 | goto out; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1970 | } |
| 1971 | |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1972 | *ret_orphan_dir = orphan_dir_inode; |
| 1973 | |
Mark Fasheh | dd43bcd | 2010-08-13 15:15:18 -0700 | [diff] [blame] | 1974 | out: |
| 1975 | brelse(orphan_dir_bh); |
| 1976 | |
| 1977 | if (ret) { |
| 1978 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1979 | mutex_unlock(&orphan_dir_inode->i_mutex); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1980 | iput(orphan_dir_inode); |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1981 | } |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1982 | |
Mark Fasheh | dd43bcd | 2010-08-13 15:15:18 -0700 | [diff] [blame] | 1983 | mlog_exit(ret); |
| 1984 | return ret; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1985 | } |
| 1986 | |
| 1987 | static int ocfs2_orphan_add(struct ocfs2_super *osb, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 1988 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1989 | struct inode *inode, |
Tristan Ye | 3939fda | 2010-03-19 09:21:09 +0800 | [diff] [blame] | 1990 | struct buffer_head *fe_bh, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1991 | char *name, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 1992 | struct ocfs2_dir_lookup_result *lookup, |
Mark Fasheh | 5098c27 | 2006-10-05 18:12:57 -0700 | [diff] [blame] | 1993 | struct inode *orphan_dir_inode) |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1994 | { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1995 | struct buffer_head *orphan_dir_bh = NULL; |
| 1996 | int status = 0; |
| 1997 | struct ocfs2_dinode *orphan_fe; |
Tristan Ye | 3939fda | 2010-03-19 09:21:09 +0800 | [diff] [blame] | 1998 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) fe_bh->b_data; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 1999 | |
| 2000 | mlog_entry("(inode->i_ino = %lu)\n", inode->i_ino); |
| 2001 | |
Joel Becker | b657c95 | 2008-11-13 14:49:11 -0800 | [diff] [blame] | 2002 | status = ocfs2_read_inode_block(orphan_dir_inode, &orphan_dir_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2003 | if (status < 0) { |
| 2004 | mlog_errno(status); |
| 2005 | goto leave; |
| 2006 | } |
| 2007 | |
Joel Becker | 0cf2f76 | 2009-02-12 16:41:25 -0800 | [diff] [blame] | 2008 | status = ocfs2_journal_access_di(handle, |
| 2009 | INODE_CACHE(orphan_dir_inode), |
| 2010 | orphan_dir_bh, |
Joel Becker | 13723d0 | 2008-10-17 19:25:01 -0700 | [diff] [blame] | 2011 | OCFS2_JOURNAL_ACCESS_WRITE); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2012 | if (status < 0) { |
| 2013 | mlog_errno(status); |
| 2014 | goto leave; |
| 2015 | } |
| 2016 | |
| 2017 | /* we're a cluster, and nlink can change on disk from |
| 2018 | * underneath us... */ |
| 2019 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; |
| 2020 | if (S_ISDIR(inode->i_mode)) |
Mark Fasheh | 198a1ca | 2008-11-20 17:54:57 -0800 | [diff] [blame] | 2021 | ocfs2_add_links_count(orphan_fe, 1); |
| 2022 | orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe); |
Joel Becker | ec20cec | 2010-03-19 14:13:52 -0700 | [diff] [blame] | 2023 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2024 | |
| 2025 | status = __ocfs2_add_entry(handle, orphan_dir_inode, name, |
| 2026 | OCFS2_ORPHAN_NAMELEN, inode, |
| 2027 | OCFS2_I(inode)->ip_blkno, |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 2028 | orphan_dir_bh, lookup); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2029 | if (status < 0) { |
| 2030 | mlog_errno(status); |
| 2031 | goto leave; |
| 2032 | } |
| 2033 | |
Tristan Ye | 3939fda | 2010-03-19 09:21:09 +0800 | [diff] [blame] | 2034 | /* |
| 2035 | * We're going to journal the change of i_flags and i_orphaned_slot. |
| 2036 | * It's safe anyway, though some callers may duplicate the journaling. |
| 2037 | * Journaling within the func just make the logic look more |
| 2038 | * straightforward. |
| 2039 | */ |
| 2040 | status = ocfs2_journal_access_di(handle, |
| 2041 | INODE_CACHE(inode), |
| 2042 | fe_bh, |
| 2043 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 2044 | if (status < 0) { |
| 2045 | mlog_errno(status); |
| 2046 | goto leave; |
| 2047 | } |
| 2048 | |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2049 | le32_add_cpu(&fe->i_flags, OCFS2_ORPHANED_FL); |
Li Dongyang | d4cd187 | 2010-04-22 16:11:19 +0800 | [diff] [blame] | 2050 | OCFS2_I(inode)->ip_flags &= ~OCFS2_INODE_SKIP_ORPHAN_DIR; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2051 | |
| 2052 | /* Record which orphan dir our inode now resides |
| 2053 | * in. delete_inode will use this to determine which orphan |
| 2054 | * dir to lock. */ |
Tiger Yang | 5000863 | 2007-03-20 16:01:38 -0700 | [diff] [blame] | 2055 | fe->i_orphaned_slot = cpu_to_le16(osb->slot_num); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2056 | |
Tristan Ye | 3939fda | 2010-03-19 09:21:09 +0800 | [diff] [blame] | 2057 | ocfs2_journal_dirty(handle, fe_bh); |
| 2058 | |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 2059 | mlog(0, "Inode %llu orphaned in slot %d\n", |
| 2060 | (unsigned long long)OCFS2_I(inode)->ip_blkno, osb->slot_num); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2061 | |
| 2062 | leave: |
Mark Fasheh | a81cb88 | 2008-10-07 14:25:16 -0700 | [diff] [blame] | 2063 | brelse(orphan_dir_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2064 | |
| 2065 | mlog_exit(status); |
| 2066 | return status; |
| 2067 | } |
| 2068 | |
| 2069 | /* unlike orphan_add, we expect the orphan dir to already be locked here. */ |
| 2070 | int ocfs2_orphan_del(struct ocfs2_super *osb, |
Mark Fasheh | 1fabe14 | 2006-10-09 18:11:45 -0700 | [diff] [blame] | 2071 | handle_t *handle, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2072 | struct inode *orphan_dir_inode, |
| 2073 | struct inode *inode, |
| 2074 | struct buffer_head *orphan_dir_bh) |
| 2075 | { |
| 2076 | char name[OCFS2_ORPHAN_NAMELEN + 1]; |
| 2077 | struct ocfs2_dinode *orphan_fe; |
| 2078 | int status = 0; |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 2079 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2080 | |
| 2081 | mlog_entry_void(); |
| 2082 | |
| 2083 | status = ocfs2_blkno_stringify(OCFS2_I(inode)->ip_blkno, name); |
| 2084 | if (status < 0) { |
| 2085 | mlog_errno(status); |
| 2086 | goto leave; |
| 2087 | } |
| 2088 | |
Mark Fasheh | b0697053 | 2006-03-03 10:24:33 -0800 | [diff] [blame] | 2089 | mlog(0, "removing '%s' from orphan dir %llu (namelen=%d)\n", |
| 2090 | name, (unsigned long long)OCFS2_I(orphan_dir_inode)->ip_blkno, |
| 2091 | OCFS2_ORPHAN_NAMELEN); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2092 | |
| 2093 | /* find it's spot in the orphan directory */ |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 2094 | status = ocfs2_find_entry(name, OCFS2_ORPHAN_NAMELEN, orphan_dir_inode, |
| 2095 | &lookup); |
| 2096 | if (status) { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2097 | mlog_errno(status); |
| 2098 | goto leave; |
| 2099 | } |
| 2100 | |
| 2101 | /* remove it from the orphan directory */ |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 2102 | status = ocfs2_delete_entry(handle, orphan_dir_inode, &lookup); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2103 | if (status < 0) { |
| 2104 | mlog_errno(status); |
| 2105 | goto leave; |
| 2106 | } |
| 2107 | |
Joel Becker | 0cf2f76 | 2009-02-12 16:41:25 -0800 | [diff] [blame] | 2108 | status = ocfs2_journal_access_di(handle, |
| 2109 | INODE_CACHE(orphan_dir_inode), |
| 2110 | orphan_dir_bh, |
Joel Becker | 13723d0 | 2008-10-17 19:25:01 -0700 | [diff] [blame] | 2111 | OCFS2_JOURNAL_ACCESS_WRITE); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2112 | if (status < 0) { |
| 2113 | mlog_errno(status); |
| 2114 | goto leave; |
| 2115 | } |
| 2116 | |
| 2117 | /* do the i_nlink dance! :) */ |
| 2118 | orphan_fe = (struct ocfs2_dinode *) orphan_dir_bh->b_data; |
| 2119 | if (S_ISDIR(inode->i_mode)) |
Mark Fasheh | 198a1ca | 2008-11-20 17:54:57 -0800 | [diff] [blame] | 2120 | ocfs2_add_links_count(orphan_fe, -1); |
| 2121 | orphan_dir_inode->i_nlink = ocfs2_read_links_count(orphan_fe); |
Joel Becker | ec20cec | 2010-03-19 14:13:52 -0700 | [diff] [blame] | 2122 | ocfs2_journal_dirty(handle, orphan_dir_bh); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2123 | |
| 2124 | leave: |
Mark Fasheh | 4a12ca3 | 2008-11-12 15:43:34 -0800 | [diff] [blame] | 2125 | ocfs2_free_dir_lookup_result(&lookup); |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2126 | |
| 2127 | mlog_exit(status); |
| 2128 | return status; |
| 2129 | } |
| 2130 | |
Mark Fasheh | 97b8f4a | 2010-08-13 15:15:19 -0700 | [diff] [blame] | 2131 | /** |
| 2132 | * ocfs2_prep_new_orphaned_file() - Prepare the orphan dir to recieve a newly |
| 2133 | * allocated file. This is different from the typical 'add to orphan dir' |
| 2134 | * operation in that the inode does not yet exist. This is a problem because |
| 2135 | * the orphan dir stringifies the inode block number to come up with it's |
| 2136 | * dirent. Obviously if the inode does not yet exist we have a chicken and egg |
| 2137 | * problem. This function works around it by calling deeper into the orphan |
| 2138 | * and suballoc code than other callers. Use this only by necessity. |
| 2139 | * @dir: The directory which this inode will ultimately wind up under - not the |
| 2140 | * orphan dir! |
| 2141 | * @dir_bh: buffer_head the @dir inode block |
| 2142 | * @orphan_name: string of length (CFS2_ORPHAN_NAMELEN + 1). Will be filled |
| 2143 | * with the string to be used for orphan dirent. Pass back to the orphan dir |
| 2144 | * code. |
| 2145 | * @ret_orphan_dir: orphan dir inode returned to be passed back into orphan |
| 2146 | * dir code. |
| 2147 | * @ret_di_blkno: block number where the new inode will be allocated. |
| 2148 | * @orphan_insert: Dir insert context to be passed back into orphan dir code. |
| 2149 | * @ret_inode_ac: Inode alloc context to be passed back to the allocator. |
| 2150 | * |
| 2151 | * Returns zero on success and the ret_orphan_dir, name and lookup |
| 2152 | * fields will be populated. |
| 2153 | * |
| 2154 | * Returns non-zero on failure. |
| 2155 | */ |
| 2156 | static int ocfs2_prep_new_orphaned_file(struct inode *dir, |
| 2157 | struct buffer_head *dir_bh, |
| 2158 | char *orphan_name, |
| 2159 | struct inode **ret_orphan_dir, |
| 2160 | u64 *ret_di_blkno, |
| 2161 | struct ocfs2_dir_lookup_result *orphan_insert, |
| 2162 | struct ocfs2_alloc_context **ret_inode_ac) |
| 2163 | { |
| 2164 | int ret; |
| 2165 | u64 di_blkno; |
| 2166 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
| 2167 | struct inode *orphan_dir = NULL; |
| 2168 | struct buffer_head *orphan_dir_bh = NULL; |
| 2169 | struct ocfs2_alloc_context *inode_ac = NULL; |
| 2170 | |
| 2171 | ret = ocfs2_lookup_lock_orphan_dir(osb, &orphan_dir, &orphan_dir_bh); |
| 2172 | if (ret < 0) { |
| 2173 | mlog_errno(ret); |
| 2174 | return ret; |
| 2175 | } |
| 2176 | |
| 2177 | /* reserve an inode spot */ |
| 2178 | ret = ocfs2_reserve_new_inode(osb, &inode_ac); |
| 2179 | if (ret < 0) { |
| 2180 | if (ret != -ENOSPC) |
| 2181 | mlog_errno(ret); |
| 2182 | goto out; |
| 2183 | } |
| 2184 | |
| 2185 | ret = ocfs2_find_new_inode_loc(dir, dir_bh, inode_ac, |
| 2186 | &di_blkno); |
| 2187 | if (ret) { |
| 2188 | mlog_errno(ret); |
| 2189 | goto out; |
| 2190 | } |
| 2191 | |
| 2192 | ret = __ocfs2_prepare_orphan_dir(orphan_dir, orphan_dir_bh, |
| 2193 | di_blkno, orphan_name, orphan_insert); |
| 2194 | if (ret < 0) { |
| 2195 | mlog_errno(ret); |
| 2196 | goto out; |
| 2197 | } |
| 2198 | |
| 2199 | out: |
| 2200 | if (ret == 0) { |
| 2201 | *ret_orphan_dir = orphan_dir; |
| 2202 | *ret_di_blkno = di_blkno; |
| 2203 | *ret_inode_ac = inode_ac; |
| 2204 | /* |
| 2205 | * orphan_name and orphan_insert are already up to |
| 2206 | * date via prepare_orphan_dir |
| 2207 | */ |
| 2208 | } else { |
| 2209 | /* Unroll reserve_new_inode* */ |
| 2210 | if (inode_ac) |
| 2211 | ocfs2_free_alloc_context(inode_ac); |
| 2212 | |
| 2213 | /* Unroll orphan dir locking */ |
| 2214 | mutex_unlock(&orphan_dir->i_mutex); |
| 2215 | ocfs2_inode_unlock(orphan_dir, 1); |
| 2216 | iput(orphan_dir); |
| 2217 | } |
| 2218 | |
| 2219 | brelse(orphan_dir_bh); |
| 2220 | |
| 2221 | return 0; |
| 2222 | } |
| 2223 | |
Tao Ma | bc13d34 | 2009-08-18 11:44:14 +0800 | [diff] [blame] | 2224 | int ocfs2_create_inode_in_orphan(struct inode *dir, |
| 2225 | int mode, |
| 2226 | struct inode **new_inode) |
| 2227 | { |
| 2228 | int status, did_quota_inode = 0; |
| 2229 | struct inode *inode = NULL; |
| 2230 | struct inode *orphan_dir = NULL; |
| 2231 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
| 2232 | struct ocfs2_dinode *di = NULL; |
| 2233 | handle_t *handle = NULL; |
| 2234 | char orphan_name[OCFS2_ORPHAN_NAMELEN + 1]; |
| 2235 | struct buffer_head *parent_di_bh = NULL; |
| 2236 | struct buffer_head *new_di_bh = NULL; |
| 2237 | struct ocfs2_alloc_context *inode_ac = NULL; |
| 2238 | struct ocfs2_dir_lookup_result orphan_insert = { NULL, }; |
Mark Fasheh | 97b8f4a | 2010-08-13 15:15:19 -0700 | [diff] [blame] | 2239 | u64 uninitialized_var(di_blkno), suballoc_loc; |
| 2240 | u16 suballoc_bit; |
Tao Ma | bc13d34 | 2009-08-18 11:44:14 +0800 | [diff] [blame] | 2241 | |
| 2242 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); |
| 2243 | if (status < 0) { |
| 2244 | if (status != -ENOENT) |
| 2245 | mlog_errno(status); |
| 2246 | return status; |
| 2247 | } |
| 2248 | |
Mark Fasheh | 97b8f4a | 2010-08-13 15:15:19 -0700 | [diff] [blame] | 2249 | status = ocfs2_prep_new_orphaned_file(dir, parent_di_bh, |
| 2250 | orphan_name, &orphan_dir, |
| 2251 | &di_blkno, &orphan_insert, &inode_ac); |
Tao Ma | bc13d34 | 2009-08-18 11:44:14 +0800 | [diff] [blame] | 2252 | if (status < 0) { |
| 2253 | if (status != -ENOSPC) |
| 2254 | mlog_errno(status); |
| 2255 | goto leave; |
| 2256 | } |
| 2257 | |
| 2258 | inode = ocfs2_get_init_inode(dir, mode); |
| 2259 | if (!inode) { |
| 2260 | status = -ENOMEM; |
| 2261 | mlog_errno(status); |
| 2262 | goto leave; |
| 2263 | } |
| 2264 | |
| 2265 | handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, 0, 0)); |
| 2266 | if (IS_ERR(handle)) { |
| 2267 | status = PTR_ERR(handle); |
| 2268 | handle = NULL; |
| 2269 | mlog_errno(status); |
| 2270 | goto leave; |
| 2271 | } |
| 2272 | |
Christoph Hellwig | 63936dd | 2010-03-03 09:05:01 -0500 | [diff] [blame] | 2273 | status = dquot_alloc_inode(inode); |
| 2274 | if (status) |
Tao Ma | bc13d34 | 2009-08-18 11:44:14 +0800 | [diff] [blame] | 2275 | goto leave; |
Tao Ma | bc13d34 | 2009-08-18 11:44:14 +0800 | [diff] [blame] | 2276 | did_quota_inode = 1; |
| 2277 | |
Mark Fasheh | 97b8f4a | 2010-08-13 15:15:19 -0700 | [diff] [blame] | 2278 | status = ocfs2_claim_new_inode_at_loc(handle, dir, inode_ac, |
| 2279 | &suballoc_loc, |
| 2280 | &suballoc_bit, di_blkno); |
Tao Ma | bc13d34 | 2009-08-18 11:44:14 +0800 | [diff] [blame] | 2281 | if (status < 0) { |
| 2282 | mlog_errno(status); |
| 2283 | goto leave; |
| 2284 | } |
| 2285 | |
Mark Fasheh | 97b8f4a | 2010-08-13 15:15:19 -0700 | [diff] [blame] | 2286 | inode->i_nlink = 0; |
| 2287 | /* do the real work now. */ |
| 2288 | status = __ocfs2_mknod_locked(dir, inode, |
| 2289 | 0, &new_di_bh, parent_di_bh, handle, |
| 2290 | inode_ac, di_blkno, suballoc_loc, |
| 2291 | suballoc_bit); |
Tao Ma | bc13d34 | 2009-08-18 11:44:14 +0800 | [diff] [blame] | 2292 | if (status < 0) { |
| 2293 | mlog_errno(status); |
| 2294 | goto leave; |
| 2295 | } |
| 2296 | |
| 2297 | di = (struct ocfs2_dinode *)new_di_bh->b_data; |
Tristan Ye | 3939fda | 2010-03-19 09:21:09 +0800 | [diff] [blame] | 2298 | status = ocfs2_orphan_add(osb, handle, inode, new_di_bh, orphan_name, |
Tao Ma | bc13d34 | 2009-08-18 11:44:14 +0800 | [diff] [blame] | 2299 | &orphan_insert, orphan_dir); |
| 2300 | if (status < 0) { |
| 2301 | mlog_errno(status); |
| 2302 | goto leave; |
| 2303 | } |
| 2304 | |
| 2305 | /* get open lock so that only nodes can't remove it from orphan dir. */ |
| 2306 | status = ocfs2_open_lock(inode); |
| 2307 | if (status < 0) |
| 2308 | mlog_errno(status); |
| 2309 | |
Tao Ma | c7d260a | 2009-12-18 10:24:54 +0800 | [diff] [blame] | 2310 | insert_inode_hash(inode); |
Tao Ma | bc13d34 | 2009-08-18 11:44:14 +0800 | [diff] [blame] | 2311 | leave: |
| 2312 | if (status < 0 && did_quota_inode) |
Christoph Hellwig | 63936dd | 2010-03-03 09:05:01 -0500 | [diff] [blame] | 2313 | dquot_free_inode(inode); |
Tao Ma | bc13d34 | 2009-08-18 11:44:14 +0800 | [diff] [blame] | 2314 | if (handle) |
| 2315 | ocfs2_commit_trans(osb, handle); |
| 2316 | |
| 2317 | if (orphan_dir) { |
| 2318 | /* This was locked for us in ocfs2_prepare_orphan_dir() */ |
| 2319 | ocfs2_inode_unlock(orphan_dir, 1); |
| 2320 | mutex_unlock(&orphan_dir->i_mutex); |
| 2321 | iput(orphan_dir); |
| 2322 | } |
| 2323 | |
| 2324 | if (status == -ENOSPC) |
| 2325 | mlog(0, "Disk is full\n"); |
| 2326 | |
| 2327 | if ((status < 0) && inode) { |
| 2328 | clear_nlink(inode); |
| 2329 | iput(inode); |
| 2330 | } |
| 2331 | |
| 2332 | if (inode_ac) |
| 2333 | ocfs2_free_alloc_context(inode_ac); |
| 2334 | |
| 2335 | brelse(new_di_bh); |
| 2336 | |
| 2337 | if (!status) |
| 2338 | *new_inode = inode; |
| 2339 | |
| 2340 | ocfs2_free_dir_lookup_result(&orphan_insert); |
| 2341 | |
| 2342 | ocfs2_inode_unlock(dir, 1); |
| 2343 | brelse(parent_di_bh); |
| 2344 | return status; |
| 2345 | } |
| 2346 | |
| 2347 | int ocfs2_mv_orphaned_inode_to_new(struct inode *dir, |
| 2348 | struct inode *inode, |
| 2349 | struct dentry *dentry) |
| 2350 | { |
| 2351 | int status = 0; |
| 2352 | struct buffer_head *parent_di_bh = NULL; |
| 2353 | handle_t *handle = NULL; |
| 2354 | struct ocfs2_super *osb = OCFS2_SB(dir->i_sb); |
| 2355 | struct ocfs2_dinode *dir_di, *di; |
| 2356 | struct inode *orphan_dir_inode = NULL; |
| 2357 | struct buffer_head *orphan_dir_bh = NULL; |
| 2358 | struct buffer_head *di_bh = NULL; |
| 2359 | struct ocfs2_dir_lookup_result lookup = { NULL, }; |
| 2360 | |
| 2361 | mlog_entry("(0x%p, 0x%p, %.*s')\n", dir, dentry, |
| 2362 | dentry->d_name.len, dentry->d_name.name); |
| 2363 | |
| 2364 | status = ocfs2_inode_lock(dir, &parent_di_bh, 1); |
| 2365 | if (status < 0) { |
| 2366 | if (status != -ENOENT) |
| 2367 | mlog_errno(status); |
| 2368 | return status; |
| 2369 | } |
| 2370 | |
| 2371 | dir_di = (struct ocfs2_dinode *) parent_di_bh->b_data; |
| 2372 | if (!dir_di->i_links_count) { |
| 2373 | /* can't make a file in a deleted directory. */ |
| 2374 | status = -ENOENT; |
| 2375 | goto leave; |
| 2376 | } |
| 2377 | |
| 2378 | status = ocfs2_check_dir_for_entry(dir, dentry->d_name.name, |
| 2379 | dentry->d_name.len); |
| 2380 | if (status) |
| 2381 | goto leave; |
| 2382 | |
| 2383 | /* get a spot inside the dir. */ |
| 2384 | status = ocfs2_prepare_dir_for_insert(osb, dir, parent_di_bh, |
| 2385 | dentry->d_name.name, |
| 2386 | dentry->d_name.len, &lookup); |
| 2387 | if (status < 0) { |
| 2388 | mlog_errno(status); |
| 2389 | goto leave; |
| 2390 | } |
| 2391 | |
| 2392 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
| 2393 | ORPHAN_DIR_SYSTEM_INODE, |
| 2394 | osb->slot_num); |
| 2395 | if (!orphan_dir_inode) { |
| 2396 | status = -EEXIST; |
| 2397 | mlog_errno(status); |
| 2398 | goto leave; |
| 2399 | } |
| 2400 | |
| 2401 | mutex_lock(&orphan_dir_inode->i_mutex); |
| 2402 | |
| 2403 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
| 2404 | if (status < 0) { |
| 2405 | mlog_errno(status); |
| 2406 | mutex_unlock(&orphan_dir_inode->i_mutex); |
| 2407 | iput(orphan_dir_inode); |
| 2408 | goto leave; |
| 2409 | } |
| 2410 | |
| 2411 | status = ocfs2_read_inode_block(inode, &di_bh); |
| 2412 | if (status < 0) { |
| 2413 | mlog_errno(status); |
| 2414 | goto orphan_unlock; |
| 2415 | } |
| 2416 | |
| 2417 | handle = ocfs2_start_trans(osb, ocfs2_rename_credits(osb->sb)); |
| 2418 | if (IS_ERR(handle)) { |
| 2419 | status = PTR_ERR(handle); |
| 2420 | handle = NULL; |
| 2421 | mlog_errno(status); |
| 2422 | goto orphan_unlock; |
| 2423 | } |
| 2424 | |
| 2425 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
| 2426 | di_bh, OCFS2_JOURNAL_ACCESS_WRITE); |
| 2427 | if (status < 0) { |
| 2428 | mlog_errno(status); |
| 2429 | goto out_commit; |
| 2430 | } |
| 2431 | |
| 2432 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, |
| 2433 | orphan_dir_bh); |
| 2434 | if (status < 0) { |
| 2435 | mlog_errno(status); |
| 2436 | goto out_commit; |
| 2437 | } |
| 2438 | |
| 2439 | di = (struct ocfs2_dinode *)di_bh->b_data; |
| 2440 | le32_add_cpu(&di->i_flags, -OCFS2_ORPHANED_FL); |
| 2441 | di->i_orphaned_slot = 0; |
Tao Ma | 10cf1a0 | 2009-12-18 10:24:55 +0800 | [diff] [blame] | 2442 | inode->i_nlink = 1; |
| 2443 | ocfs2_set_links_count(di, inode->i_nlink); |
Tao Ma | bc13d34 | 2009-08-18 11:44:14 +0800 | [diff] [blame] | 2444 | ocfs2_journal_dirty(handle, di_bh); |
| 2445 | |
| 2446 | status = ocfs2_add_entry(handle, dentry, inode, |
| 2447 | OCFS2_I(inode)->ip_blkno, parent_di_bh, |
| 2448 | &lookup); |
| 2449 | if (status < 0) { |
| 2450 | mlog_errno(status); |
| 2451 | goto out_commit; |
| 2452 | } |
| 2453 | |
| 2454 | status = ocfs2_dentry_attach_lock(dentry, inode, |
| 2455 | OCFS2_I(dir)->ip_blkno); |
| 2456 | if (status) { |
| 2457 | mlog_errno(status); |
| 2458 | goto out_commit; |
| 2459 | } |
| 2460 | |
Tao Ma | bc13d34 | 2009-08-18 11:44:14 +0800 | [diff] [blame] | 2461 | dentry->d_op = &ocfs2_dentry_ops; |
| 2462 | d_instantiate(dentry, inode); |
| 2463 | status = 0; |
| 2464 | out_commit: |
| 2465 | ocfs2_commit_trans(osb, handle); |
| 2466 | orphan_unlock: |
| 2467 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
| 2468 | mutex_unlock(&orphan_dir_inode->i_mutex); |
| 2469 | iput(orphan_dir_inode); |
| 2470 | leave: |
| 2471 | |
| 2472 | ocfs2_inode_unlock(dir, 1); |
| 2473 | |
| 2474 | brelse(di_bh); |
| 2475 | brelse(parent_di_bh); |
| 2476 | brelse(orphan_dir_bh); |
| 2477 | |
| 2478 | ocfs2_free_dir_lookup_result(&lookup); |
| 2479 | |
| 2480 | mlog_exit(status); |
| 2481 | |
| 2482 | return status; |
| 2483 | } |
| 2484 | |
Arjan van de Ven | 92e1d5b | 2007-02-12 00:55:39 -0800 | [diff] [blame] | 2485 | const struct inode_operations ocfs2_dir_iops = { |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2486 | .create = ocfs2_create, |
| 2487 | .lookup = ocfs2_lookup, |
| 2488 | .link = ocfs2_link, |
| 2489 | .unlink = ocfs2_unlink, |
| 2490 | .rmdir = ocfs2_unlink, |
| 2491 | .symlink = ocfs2_symlink, |
| 2492 | .mkdir = ocfs2_mkdir, |
| 2493 | .mknod = ocfs2_mknod, |
| 2494 | .rename = ocfs2_rename, |
| 2495 | .setattr = ocfs2_setattr, |
| 2496 | .getattr = ocfs2_getattr, |
Tiger Yang | d38eb8d | 2006-11-27 09:59:21 +0800 | [diff] [blame] | 2497 | .permission = ocfs2_permission, |
Tiger Yang | cf1d6c7 | 2008-08-18 17:11:00 +0800 | [diff] [blame] | 2498 | .setxattr = generic_setxattr, |
| 2499 | .getxattr = generic_getxattr, |
| 2500 | .listxattr = ocfs2_listxattr, |
| 2501 | .removexattr = generic_removexattr, |
Tristan Ye | 55f4946 | 2009-12-17 18:42:16 +0800 | [diff] [blame] | 2502 | .fiemap = ocfs2_fiemap, |
Mark Fasheh | ccd979b | 2005-12-15 14:31:24 -0800 | [diff] [blame] | 2503 | }; |