Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * published by the Free Software Foundation. |
| 8 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write the Free Software Foundation, |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include "xfs.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 19 | #include "xfs_fs.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | #include "xfs_types.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include "xfs_log.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 22 | #include "xfs_inum.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include "xfs_trans.h" |
| 24 | #include "xfs_sb.h" |
David Chinner | da353b0 | 2007-08-28 14:00:13 +1000 | [diff] [blame] | 25 | #include "xfs_ag.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include "xfs_dir2.h" |
| 27 | #include "xfs_dmapi.h" |
| 28 | #include "xfs_mount.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 29 | #include "xfs_da_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include "xfs_bmap_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include "xfs_dir2_sf.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 32 | #include "xfs_attr_sf.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include "xfs_dinode.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include "xfs_inode.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 35 | #include "xfs_inode_item.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include "xfs_bmap.h" |
| 37 | #include "xfs_error.h" |
| 38 | #include "xfs_quota.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include "xfs_utils.h" |
| 40 | #include "xfs_trans_space.h" |
David Chinner | a8272ce | 2007-11-23 16:28:09 +1100 | [diff] [blame] | 41 | #include "xfs_vnodeops.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
| 43 | |
| 44 | /* |
Christoph Hellwig | cfa853e | 2008-04-22 17:34:06 +1000 | [diff] [blame] | 45 | * Enter all inodes for a rename transaction into a sorted array. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | */ |
Christoph Hellwig | cfa853e | 2008-04-22 17:34:06 +1000 | [diff] [blame] | 47 | STATIC void |
| 48 | xfs_sort_for_rename( |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 49 | xfs_inode_t *dp1, /* in: old (source) directory inode */ |
| 50 | xfs_inode_t *dp2, /* in: new (target) directory inode */ |
| 51 | xfs_inode_t *ip1, /* in: inode of old entry */ |
Christoph Hellwig | cfa853e | 2008-04-22 17:34:06 +1000 | [diff] [blame] | 52 | xfs_inode_t *ip2, /* in: inode of new entry, if it |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | already exists, NULL otherwise. */ |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 54 | xfs_inode_t **i_tab,/* out: array of inode returned, sorted */ |
| 55 | int *num_inodes) /* out: number of inodes in array */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | { |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 57 | xfs_inode_t *temp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | int i, j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | |
| 60 | /* |
| 61 | * i_tab contains a list of pointers to inodes. We initialize |
| 62 | * the table here & we'll sort it. We will then use it to |
| 63 | * order the acquisition of the inode locks. |
| 64 | * |
| 65 | * Note that the table may contain duplicates. e.g., dp1 == dp2. |
| 66 | */ |
| 67 | i_tab[0] = dp1; |
| 68 | i_tab[1] = dp2; |
| 69 | i_tab[2] = ip1; |
Christoph Hellwig | cfa853e | 2008-04-22 17:34:06 +1000 | [diff] [blame] | 70 | if (ip2) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | *num_inodes = 4; |
| 72 | i_tab[3] = ip2; |
Christoph Hellwig | cfa853e | 2008-04-22 17:34:06 +1000 | [diff] [blame] | 73 | } else { |
| 74 | *num_inodes = 3; |
| 75 | i_tab[3] = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | } |
| 77 | |
| 78 | /* |
| 79 | * Sort the elements via bubble sort. (Remember, there are at |
| 80 | * most 4 elements to sort, so this is adequate.) |
| 81 | */ |
Christoph Hellwig | cfa853e | 2008-04-22 17:34:06 +1000 | [diff] [blame] | 82 | for (i = 0; i < *num_inodes; i++) { |
| 83 | for (j = 1; j < *num_inodes; j++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | if (i_tab[j]->i_ino < i_tab[j-1]->i_ino) { |
| 85 | temp = i_tab[j]; |
| 86 | i_tab[j] = i_tab[j-1]; |
| 87 | i_tab[j-1] = temp; |
| 88 | } |
| 89 | } |
| 90 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | } |
| 92 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | /* |
| 94 | * xfs_rename |
| 95 | */ |
| 96 | int |
| 97 | xfs_rename( |
Christoph Hellwig | 993386c1 | 2007-08-28 16:12:30 +1000 | [diff] [blame] | 98 | xfs_inode_t *src_dp, |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 99 | struct xfs_name *src_name, |
| 100 | xfs_inode_t *src_ip, |
Christoph Hellwig | 3937be5 | 2008-03-06 13:46:19 +1100 | [diff] [blame] | 101 | xfs_inode_t *target_dp, |
Christoph Hellwig | cfa853e | 2008-04-22 17:34:06 +1000 | [diff] [blame] | 102 | struct xfs_name *target_name, |
| 103 | xfs_inode_t *target_ip) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | { |
Christoph Hellwig | cfa853e | 2008-04-22 17:34:06 +1000 | [diff] [blame] | 105 | xfs_trans_t *tp = NULL; |
Christoph Hellwig | 993386c1 | 2007-08-28 16:12:30 +1000 | [diff] [blame] | 106 | xfs_mount_t *mp = src_dp->i_mount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | int new_parent; /* moving to a new dir */ |
| 108 | int src_is_directory; /* src_name is a directory */ |
| 109 | int error; |
| 110 | xfs_bmap_free_t free_list; |
| 111 | xfs_fsblock_t first_block; |
| 112 | int cancel_flags; |
| 113 | int committed; |
| 114 | xfs_inode_t *inodes[4]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | int spaceres; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | int num_inodes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 118 | xfs_itrace_entry(src_dp); |
Christoph Hellwig | 3937be5 | 2008-03-06 13:46:19 +1100 | [diff] [blame] | 119 | xfs_itrace_entry(target_dp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | |
Christoph Hellwig | eb9df39 | 2007-08-16 18:42:07 +1000 | [diff] [blame] | 121 | if (DM_EVENT_ENABLED(src_dp, DM_EVENT_RENAME) || |
| 122 | DM_EVENT_ENABLED(target_dp, DM_EVENT_RENAME)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | error = XFS_SEND_NAMESP(mp, DM_EVENT_RENAME, |
Christoph Hellwig | bc4ac74 | 2008-03-06 13:45:58 +1100 | [diff] [blame] | 124 | src_dp, DM_RIGHT_NULL, |
| 125 | target_dp, DM_RIGHT_NULL, |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 126 | src_name->name, target_name->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | 0, 0, 0); |
Christoph Hellwig | cfa853e | 2008-04-22 17:34:06 +1000 | [diff] [blame] | 128 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | } |
| 131 | /* Return through std_return after this point. */ |
| 132 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | new_parent = (src_dp != target_dp); |
| 134 | src_is_directory = ((src_ip->i_d.di_mode & S_IFMT) == S_IFDIR); |
| 135 | |
Christoph Hellwig | cfa853e | 2008-04-22 17:34:06 +1000 | [diff] [blame] | 136 | if (src_is_directory) { |
| 137 | /* |
| 138 | * Check for link count overflow on target_dp |
| 139 | */ |
| 140 | if (target_ip == NULL && new_parent && |
| 141 | target_dp->i_d.di_nlink >= XFS_MAXLINK) { |
| 142 | error = XFS_ERROR(EMLINK); |
| 143 | goto std_return; |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | xfs_sort_for_rename(src_dp, target_dp, src_ip, target_ip, |
| 148 | inodes, &num_inodes); |
| 149 | |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 150 | xfs_bmap_init(&free_list, &first_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | tp = xfs_trans_alloc(mp, XFS_TRANS_RENAME); |
| 152 | cancel_flags = XFS_TRANS_RELEASE_LOG_RES; |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 153 | spaceres = XFS_RENAME_SPACE_RES(mp, target_name->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | error = xfs_trans_reserve(tp, spaceres, XFS_RENAME_LOG_RES(mp), 0, |
| 155 | XFS_TRANS_PERM_LOG_RES, XFS_RENAME_LOG_COUNT); |
| 156 | if (error == ENOSPC) { |
| 157 | spaceres = 0; |
| 158 | error = xfs_trans_reserve(tp, 0, XFS_RENAME_LOG_RES(mp), 0, |
| 159 | XFS_TRANS_PERM_LOG_RES, XFS_RENAME_LOG_COUNT); |
| 160 | } |
| 161 | if (error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | xfs_trans_cancel(tp, 0); |
Christoph Hellwig | 1ac74e0 | 2008-04-22 17:34:12 +1000 | [diff] [blame] | 163 | goto std_return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | } |
| 165 | |
| 166 | /* |
| 167 | * Attach the dquots to the inodes |
| 168 | */ |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 169 | error = xfs_qm_vop_rename_dqattach(inodes); |
| 170 | if (error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | xfs_trans_cancel(tp, cancel_flags); |
Christoph Hellwig | 1ac74e0 | 2008-04-22 17:34:12 +1000 | [diff] [blame] | 172 | goto std_return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | } |
| 174 | |
| 175 | /* |
Christoph Hellwig | cfa853e | 2008-04-22 17:34:06 +1000 | [diff] [blame] | 176 | * Lock all the participating inodes. Depending upon whether |
| 177 | * the target_name exists in the target directory, and |
| 178 | * whether the target directory is the same as the source |
| 179 | * directory, we can lock from 2 to 4 inodes. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | */ |
Christoph Hellwig | cfa853e | 2008-04-22 17:34:06 +1000 | [diff] [blame] | 181 | xfs_lock_inodes(inodes, num_inodes, XFS_ILOCK_EXCL); |
| 182 | |
| 183 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | * Join all the inodes to the transaction. From this point on, |
| 185 | * we can rely on either trans_commit or trans_cancel to unlock |
| 186 | * them. Note that we need to add a vnode reference to the |
| 187 | * directories since trans_commit & trans_cancel will decrement |
| 188 | * them when they unlock the inodes. Also, we need to be careful |
| 189 | * not to add an inode to the transaction more than once. |
| 190 | */ |
Christoph Hellwig | 3937be5 | 2008-03-06 13:46:19 +1100 | [diff] [blame] | 191 | IHOLD(src_dp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | xfs_trans_ijoin(tp, src_dp, XFS_ILOCK_EXCL); |
Christoph Hellwig | 1ac74e0 | 2008-04-22 17:34:12 +1000 | [diff] [blame] | 193 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | if (new_parent) { |
Christoph Hellwig | 3937be5 | 2008-03-06 13:46:19 +1100 | [diff] [blame] | 195 | IHOLD(target_dp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | xfs_trans_ijoin(tp, target_dp, XFS_ILOCK_EXCL); |
| 197 | } |
Christoph Hellwig | 1ac74e0 | 2008-04-22 17:34:12 +1000 | [diff] [blame] | 198 | |
| 199 | IHOLD(src_ip); |
| 200 | xfs_trans_ijoin(tp, src_ip, XFS_ILOCK_EXCL); |
| 201 | |
| 202 | if (target_ip) { |
| 203 | IHOLD(target_ip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | xfs_trans_ijoin(tp, target_ip, XFS_ILOCK_EXCL); |
| 205 | } |
| 206 | |
| 207 | /* |
Christoph Hellwig | 2175dd9 | 2008-12-09 04:47:31 -0500 | [diff] [blame] | 208 | * If we are using project inheritance, we only allow renames |
| 209 | * into our tree when the project IDs are the same; else the |
| 210 | * tree quota mechanism would be circumvented. |
| 211 | */ |
| 212 | if (unlikely((target_dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT) && |
| 213 | (target_dp->i_d.di_projid != src_ip->i_d.di_projid))) { |
| 214 | error = XFS_ERROR(EXDEV); |
| 215 | goto error_return; |
| 216 | } |
| 217 | |
| 218 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | * Set up the target. |
| 220 | */ |
| 221 | if (target_ip == NULL) { |
| 222 | /* |
| 223 | * If there's no space reservation, check the entry will |
| 224 | * fit before actually inserting it. |
| 225 | */ |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 226 | error = xfs_dir_canenter(tp, target_dp, target_name, spaceres); |
| 227 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | goto error_return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | /* |
| 230 | * If target does not exist and the rename crosses |
| 231 | * directories, adjust the target directory link count |
| 232 | * to account for the ".." reference from the new entry. |
| 233 | */ |
Nathan Scott | f6c2d1f | 2006-06-20 13:04:51 +1000 | [diff] [blame] | 234 | error = xfs_dir_createname(tp, target_dp, target_name, |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 235 | src_ip->i_ino, &first_block, |
| 236 | &free_list, spaceres); |
Nathan Scott | f6c2d1f | 2006-06-20 13:04:51 +1000 | [diff] [blame] | 237 | if (error == ENOSPC) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | goto error_return; |
Nathan Scott | f6c2d1f | 2006-06-20 13:04:51 +1000 | [diff] [blame] | 239 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | goto abort_return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | xfs_ichgtime(target_dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); |
| 242 | |
| 243 | if (new_parent && src_is_directory) { |
| 244 | error = xfs_bumplink(tp, target_dp); |
Nathan Scott | f6c2d1f | 2006-06-20 13:04:51 +1000 | [diff] [blame] | 245 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | goto abort_return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | } |
| 248 | } else { /* target_ip != NULL */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | /* |
| 250 | * If target exists and it's a directory, check that both |
| 251 | * target and source are directories and that target can be |
| 252 | * destroyed, or that neither is a directory. |
| 253 | */ |
| 254 | if ((target_ip->i_d.di_mode & S_IFMT) == S_IFDIR) { |
| 255 | /* |
| 256 | * Make sure target dir is empty. |
| 257 | */ |
Nathan Scott | f6c2d1f | 2006-06-20 13:04:51 +1000 | [diff] [blame] | 258 | if (!(xfs_dir_isempty(target_ip)) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | (target_ip->i_d.di_nlink > 2)) { |
| 260 | error = XFS_ERROR(EEXIST); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | goto error_return; |
| 262 | } |
| 263 | } |
| 264 | |
| 265 | /* |
| 266 | * Link the source inode under the target name. |
| 267 | * If the source inode is a directory and we are moving |
| 268 | * it across directories, its ".." entry will be |
| 269 | * inconsistent until we replace that down below. |
| 270 | * |
| 271 | * In case there is already an entry with the same |
| 272 | * name at the destination directory, remove it first. |
| 273 | */ |
Nathan Scott | f6c2d1f | 2006-06-20 13:04:51 +1000 | [diff] [blame] | 274 | error = xfs_dir_replace(tp, target_dp, target_name, |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 275 | src_ip->i_ino, |
Nathan Scott | f6c2d1f | 2006-06-20 13:04:51 +1000 | [diff] [blame] | 276 | &first_block, &free_list, spaceres); |
| 277 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | goto abort_return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | xfs_ichgtime(target_dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); |
| 280 | |
| 281 | /* |
| 282 | * Decrement the link count on the target since the target |
| 283 | * dir no longer points to it. |
| 284 | */ |
| 285 | error = xfs_droplink(tp, target_ip); |
Nathan Scott | f6c2d1f | 2006-06-20 13:04:51 +1000 | [diff] [blame] | 286 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | goto abort_return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | |
| 289 | if (src_is_directory) { |
| 290 | /* |
| 291 | * Drop the link from the old "." entry. |
| 292 | */ |
| 293 | error = xfs_droplink(tp, target_ip); |
Nathan Scott | f6c2d1f | 2006-06-20 13:04:51 +1000 | [diff] [blame] | 294 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | goto abort_return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | } /* target_ip != NULL */ |
| 298 | |
| 299 | /* |
| 300 | * Remove the source. |
| 301 | */ |
| 302 | if (new_parent && src_is_directory) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | /* |
| 304 | * Rewrite the ".." entry to point to the new |
| 305 | * directory. |
| 306 | */ |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 307 | error = xfs_dir_replace(tp, src_ip, &xfs_name_dotdot, |
| 308 | target_dp->i_ino, |
Nathan Scott | f6c2d1f | 2006-06-20 13:04:51 +1000 | [diff] [blame] | 309 | &first_block, &free_list, spaceres); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | ASSERT(error != EEXIST); |
Nathan Scott | f6c2d1f | 2006-06-20 13:04:51 +1000 | [diff] [blame] | 311 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | goto abort_return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | } |
| 314 | |
| 315 | /* |
Christoph Hellwig | 8f8670b | 2008-06-27 13:34:26 +1000 | [diff] [blame] | 316 | * We always want to hit the ctime on the source inode. |
| 317 | * |
| 318 | * This isn't strictly required by the standards since the source |
| 319 | * inode isn't really being changed, but old unix file systems did |
| 320 | * it and some incremental backup programs won't work without it. |
| 321 | */ |
| 322 | xfs_ichgtime(src_ip, XFS_ICHGTIME_CHG); |
| 323 | |
| 324 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | * Adjust the link count on src_dp. This is necessary when |
| 326 | * renaming a directory, either within one parent when |
| 327 | * the target existed, or across two parent directories. |
| 328 | */ |
| 329 | if (src_is_directory && (new_parent || target_ip != NULL)) { |
| 330 | |
| 331 | /* |
| 332 | * Decrement link count on src_directory since the |
| 333 | * entry that's moved no longer points to it. |
| 334 | */ |
| 335 | error = xfs_droplink(tp, src_dp); |
Nathan Scott | f6c2d1f | 2006-06-20 13:04:51 +1000 | [diff] [blame] | 336 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | goto abort_return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | } |
| 339 | |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 340 | error = xfs_dir_removename(tp, src_dp, src_name, src_ip->i_ino, |
| 341 | &first_block, &free_list, spaceres); |
Nathan Scott | f6c2d1f | 2006-06-20 13:04:51 +1000 | [diff] [blame] | 342 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | goto abort_return; |
Dave Chinner | 26c5295 | 2008-11-28 14:23:37 +1100 | [diff] [blame] | 344 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | xfs_ichgtime(src_dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | xfs_trans_log_inode(tp, src_dp, XFS_ILOG_CORE); |
Dave Chinner | 26c5295 | 2008-11-28 14:23:37 +1100 | [diff] [blame] | 347 | if (new_parent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | xfs_trans_log_inode(tp, target_dp, XFS_ILOG_CORE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | |
| 350 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | * If this is a synchronous mount, make sure that the |
| 352 | * rename transaction goes to disk before returning to |
| 353 | * the user. |
| 354 | */ |
| 355 | if (mp->m_flags & (XFS_MOUNT_WSYNC|XFS_MOUNT_DIRSYNC)) { |
| 356 | xfs_trans_set_sync(tp); |
| 357 | } |
| 358 | |
Eric Sandeen | f7c99b6 | 2007-02-10 18:37:16 +1100 | [diff] [blame] | 359 | error = xfs_bmap_finish(&tp, &free_list, &committed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | if (error) { |
| 361 | xfs_bmap_cancel(&free_list); |
| 362 | xfs_trans_cancel(tp, (XFS_TRANS_RELEASE_LOG_RES | |
| 363 | XFS_TRANS_ABORT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | goto std_return; |
| 365 | } |
| 366 | |
| 367 | /* |
| 368 | * trans_commit will unlock src_ip, target_ip & decrement |
| 369 | * the vnode references. |
| 370 | */ |
Eric Sandeen | 1c72bf9 | 2007-05-08 13:48:42 +1000 | [diff] [blame] | 371 | error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | |
| 373 | /* Fall through to std_return with error = 0 or errno from |
| 374 | * xfs_trans_commit */ |
| 375 | std_return: |
Christoph Hellwig | eb9df39 | 2007-08-16 18:42:07 +1000 | [diff] [blame] | 376 | if (DM_EVENT_ENABLED(src_dp, DM_EVENT_POSTRENAME) || |
| 377 | DM_EVENT_ENABLED(target_dp, DM_EVENT_POSTRENAME)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | (void) XFS_SEND_NAMESP (mp, DM_EVENT_POSTRENAME, |
Christoph Hellwig | bc4ac74 | 2008-03-06 13:45:58 +1100 | [diff] [blame] | 379 | src_dp, DM_RIGHT_NULL, |
| 380 | target_dp, DM_RIGHT_NULL, |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 381 | src_name->name, target_name->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | 0, error, 0); |
| 383 | } |
| 384 | return error; |
| 385 | |
| 386 | abort_return: |
| 387 | cancel_flags |= XFS_TRANS_ABORT; |
| 388 | /* FALLTHROUGH */ |
| 389 | error_return: |
| 390 | xfs_bmap_cancel(&free_list); |
| 391 | xfs_trans_cancel(tp, cancel_flags); |
| 392 | goto std_return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | } |