Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 2 | * Copyright (c) 2000-2006 Silicon Graphics, Inc. |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 21 | #include "xfs_bit.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include "xfs_log.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 23 | #include "xfs_inum.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include "xfs_trans.h" |
| 25 | #include "xfs_sb.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 26 | #include "xfs_ag.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include "xfs_dir2.h" |
| 28 | #include "xfs_dmapi.h" |
| 29 | #include "xfs_mount.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include "xfs_bmap_btree.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 31 | #include "xfs_alloc_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include "xfs_ialloc_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include "xfs_dir2_sf.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 34 | #include "xfs_attr_sf.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include "xfs_dinode.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include "xfs_inode.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 37 | #include "xfs_inode_item.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include "xfs_bmap.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 39 | #include "xfs_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include "xfs_ialloc.h" |
| 41 | #include "xfs_itable.h" |
| 42 | #include "xfs_dfrag.h" |
| 43 | #include "xfs_error.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include "xfs_rw.h" |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 45 | #include "xfs_vnodeops.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | |
| 47 | /* |
| 48 | * Syssgi interface for swapext |
| 49 | */ |
| 50 | int |
| 51 | xfs_swapext( |
Eric Sandeen | d0cfb37 | 2005-11-02 10:29:04 +1100 | [diff] [blame] | 52 | xfs_swapext_t __user *sxu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | { |
Eric Sandeen | d0cfb37 | 2005-11-02 10:29:04 +1100 | [diff] [blame] | 54 | xfs_swapext_t *sxp; |
Christoph Hellwig | 35fec8d | 2008-02-05 12:13:07 +1100 | [diff] [blame] | 55 | xfs_inode_t *ip, *tip; |
| 56 | struct file *file, *target_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | int error = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
Eric Sandeen | d0cfb37 | 2005-11-02 10:29:04 +1100 | [diff] [blame] | 59 | sxp = kmem_alloc(sizeof(xfs_swapext_t), KM_MAYFAIL); |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 60 | if (!sxp) { |
Eric Sandeen | d0cfb37 | 2005-11-02 10:29:04 +1100 | [diff] [blame] | 61 | error = XFS_ERROR(ENOMEM); |
Christoph Hellwig | 35fec8d | 2008-02-05 12:13:07 +1100 | [diff] [blame] | 62 | goto out; |
Eric Sandeen | d0cfb37 | 2005-11-02 10:29:04 +1100 | [diff] [blame] | 63 | } |
| 64 | |
| 65 | if (copy_from_user(sxp, sxu, sizeof(xfs_swapext_t))) { |
| 66 | error = XFS_ERROR(EFAULT); |
Christoph Hellwig | 35fec8d | 2008-02-05 12:13:07 +1100 | [diff] [blame] | 67 | goto out_free_sxp; |
Eric Sandeen | d0cfb37 | 2005-11-02 10:29:04 +1100 | [diff] [blame] | 68 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | |
| 70 | /* Pull information for the target fd */ |
Christoph Hellwig | 35fec8d | 2008-02-05 12:13:07 +1100 | [diff] [blame] | 71 | file = fget((int)sxp->sx_fdtarget); |
| 72 | if (!file) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | error = XFS_ERROR(EINVAL); |
Christoph Hellwig | 35fec8d | 2008-02-05 12:13:07 +1100 | [diff] [blame] | 74 | goto out_free_sxp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | } |
| 76 | |
Christoph Hellwig | f6aa7f2 | 2008-02-05 12:13:15 +1100 | [diff] [blame] | 77 | if (!(file->f_mode & FMODE_WRITE) || (file->f_flags & O_APPEND)) { |
| 78 | error = XFS_ERROR(EBADF); |
| 79 | goto out_put_file; |
| 80 | } |
| 81 | |
Christoph Hellwig | 35fec8d | 2008-02-05 12:13:07 +1100 | [diff] [blame] | 82 | target_file = fget((int)sxp->sx_fdtmp); |
| 83 | if (!target_file) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | error = XFS_ERROR(EINVAL); |
Christoph Hellwig | 35fec8d | 2008-02-05 12:13:07 +1100 | [diff] [blame] | 85 | goto out_put_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | } |
| 87 | |
Christoph Hellwig | f6aa7f2 | 2008-02-05 12:13:15 +1100 | [diff] [blame] | 88 | if (!(target_file->f_mode & FMODE_WRITE) || |
| 89 | (target_file->f_flags & O_APPEND)) { |
| 90 | error = XFS_ERROR(EBADF); |
| 91 | goto out_put_target_file; |
| 92 | } |
| 93 | |
Christoph Hellwig | 35fec8d | 2008-02-05 12:13:07 +1100 | [diff] [blame] | 94 | ip = XFS_I(file->f_path.dentry->d_inode); |
| 95 | tip = XFS_I(target_file->f_path.dentry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | |
| 97 | if (ip->i_mount != tip->i_mount) { |
Christoph Hellwig | 35fec8d | 2008-02-05 12:13:07 +1100 | [diff] [blame] | 98 | error = XFS_ERROR(EINVAL); |
| 99 | goto out_put_target_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | if (ip->i_ino == tip->i_ino) { |
Christoph Hellwig | 35fec8d | 2008-02-05 12:13:07 +1100 | [diff] [blame] | 103 | error = XFS_ERROR(EINVAL); |
| 104 | goto out_put_target_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | } |
| 106 | |
Christoph Hellwig | 35fec8d | 2008-02-05 12:13:07 +1100 | [diff] [blame] | 107 | if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { |
| 108 | error = XFS_ERROR(EIO); |
| 109 | goto out_put_target_file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | } |
| 111 | |
Lachlan McIlroy | 541d7d3 | 2007-10-11 17:34:33 +1000 | [diff] [blame] | 112 | error = xfs_swap_extents(ip, tip, sxp); |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 113 | |
Christoph Hellwig | 35fec8d | 2008-02-05 12:13:07 +1100 | [diff] [blame] | 114 | out_put_target_file: |
| 115 | fput(target_file); |
| 116 | out_put_file: |
| 117 | fput(file); |
| 118 | out_free_sxp: |
Denys Vlasenko | f0e2d93 | 2008-05-19 16:31:57 +1000 | [diff] [blame] | 119 | kmem_free(sxp); |
Christoph Hellwig | 35fec8d | 2008-02-05 12:13:07 +1100 | [diff] [blame] | 120 | out: |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 121 | return error; |
| 122 | } |
| 123 | |
| 124 | int |
| 125 | xfs_swap_extents( |
| 126 | xfs_inode_t *ip, |
| 127 | xfs_inode_t *tip, |
| 128 | xfs_swapext_t *sxp) |
| 129 | { |
| 130 | xfs_mount_t *mp; |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 131 | xfs_trans_t *tp; |
| 132 | xfs_bstat_t *sbp = &sxp->sx_stat; |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 133 | xfs_ifork_t *tempifp, *ifp, *tifp; |
| 134 | int ilf_fields, tilf_fields; |
| 135 | static uint lock_flags = XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL; |
| 136 | int error = 0; |
| 137 | int aforkblks = 0; |
| 138 | int taforkblks = 0; |
| 139 | __uint64_t tmp; |
| 140 | char locked = 0; |
| 141 | |
| 142 | mp = ip->i_mount; |
| 143 | |
| 144 | tempifp = kmem_alloc(sizeof(xfs_ifork_t), KM_MAYFAIL); |
| 145 | if (!tempifp) { |
| 146 | error = XFS_ERROR(ENOMEM); |
| 147 | goto error0; |
| 148 | } |
| 149 | |
| 150 | sbp = &sxp->sx_stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | |
David Chinner | f9114eb | 2008-09-17 16:51:21 +1000 | [diff] [blame] | 152 | /* |
| 153 | * we have to do two separate lock calls here to keep lockdep |
| 154 | * happy. If we try to get all the locks in one call, lock will |
| 155 | * report false positives when we drop the ILOCK and regain them |
| 156 | * below. |
| 157 | */ |
| 158 | xfs_lock_two_inodes(ip, tip, XFS_IOLOCK_EXCL); |
| 159 | xfs_lock_two_inodes(ip, tip, XFS_ILOCK_EXCL); |
Olaf Weber | 3e57ecf | 2006-06-09 14:48:12 +1000 | [diff] [blame] | 160 | locked = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | /* Verify that both files have the same format */ |
| 163 | if ((ip->i_d.di_mode & S_IFMT) != (tip->i_d.di_mode & S_IFMT)) { |
| 164 | error = XFS_ERROR(EINVAL); |
| 165 | goto error0; |
| 166 | } |
| 167 | |
| 168 | /* Verify both files are either real-time or non-realtime */ |
Eric Sandeen | 71ddabb | 2007-11-23 16:29:42 +1100 | [diff] [blame] | 169 | if (XFS_IS_REALTIME_INODE(ip) != XFS_IS_REALTIME_INODE(tip)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | error = XFS_ERROR(EINVAL); |
| 171 | goto error0; |
| 172 | } |
| 173 | |
| 174 | /* Should never get a local format */ |
| 175 | if (ip->i_d.di_format == XFS_DINODE_FMT_LOCAL || |
| 176 | tip->i_d.di_format == XFS_DINODE_FMT_LOCAL) { |
| 177 | error = XFS_ERROR(EINVAL); |
| 178 | goto error0; |
| 179 | } |
| 180 | |
Christoph Hellwig | df80c93 | 2008-08-13 16:22:09 +1000 | [diff] [blame] | 181 | if (VN_CACHED(VFS_I(tip)) != 0) { |
Christoph Hellwig | 613d704 | 2007-10-11 17:44:08 +1000 | [diff] [blame] | 182 | xfs_inval_cached_trace(tip, 0, -1, 0, -1); |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 183 | error = xfs_flushinval_pages(tip, 0, -1, |
| 184 | FI_REMAPF_LOCKED); |
Lachlan McIlroy | d3cf209 | 2007-05-08 13:49:27 +1000 | [diff] [blame] | 185 | if (error) |
| 186 | goto error0; |
Christoph Hellwig | bd5a876 | 2005-06-21 15:47:39 +1000 | [diff] [blame] | 187 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | |
| 189 | /* Verify O_DIRECT for ftmp */ |
Christoph Hellwig | df80c93 | 2008-08-13 16:22:09 +1000 | [diff] [blame] | 190 | if (VN_CACHED(VFS_I(tip)) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | error = XFS_ERROR(EINVAL); |
| 192 | goto error0; |
| 193 | } |
| 194 | |
| 195 | /* Verify all data are being swapped */ |
Eric Sandeen | d0cfb37 | 2005-11-02 10:29:04 +1100 | [diff] [blame] | 196 | if (sxp->sx_offset != 0 || |
| 197 | sxp->sx_length != ip->i_d.di_size || |
| 198 | sxp->sx_length != tip->i_d.di_size) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | error = XFS_ERROR(EFAULT); |
| 200 | goto error0; |
| 201 | } |
| 202 | |
| 203 | /* |
| 204 | * If the target has extended attributes, the tmp file |
| 205 | * must also in order to ensure the correct data fork |
| 206 | * format. |
| 207 | */ |
| 208 | if ( XFS_IFORK_Q(ip) != XFS_IFORK_Q(tip) ) { |
| 209 | error = XFS_ERROR(EINVAL); |
| 210 | goto error0; |
| 211 | } |
| 212 | |
| 213 | /* |
| 214 | * Compare the current change & modify times with that |
| 215 | * passed in. If they differ, we abort this swap. |
| 216 | * This is the mechanism used to ensure the calling |
| 217 | * process that the file was not changed out from |
| 218 | * under it. |
| 219 | */ |
| 220 | if ((sbp->bs_ctime.tv_sec != ip->i_d.di_ctime.t_sec) || |
| 221 | (sbp->bs_ctime.tv_nsec != ip->i_d.di_ctime.t_nsec) || |
| 222 | (sbp->bs_mtime.tv_sec != ip->i_d.di_mtime.t_sec) || |
| 223 | (sbp->bs_mtime.tv_nsec != ip->i_d.di_mtime.t_nsec)) { |
| 224 | error = XFS_ERROR(EBUSY); |
| 225 | goto error0; |
| 226 | } |
| 227 | |
| 228 | /* We need to fail if the file is memory mapped. Once we have tossed |
| 229 | * all existing pages, the page fault will have no option |
| 230 | * but to go to the filesystem for pages. By making the page fault call |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 231 | * vop_read (or write in the case of autogrow) they block on the iolock |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | * until we have switched the extents. |
| 233 | */ |
Christoph Hellwig | df80c93 | 2008-08-13 16:22:09 +1000 | [diff] [blame] | 234 | if (VN_MAPPED(VFS_I(ip))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | error = XFS_ERROR(EBUSY); |
| 236 | goto error0; |
| 237 | } |
| 238 | |
| 239 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
| 240 | xfs_iunlock(tip, XFS_ILOCK_EXCL); |
| 241 | |
| 242 | /* |
| 243 | * There is a race condition here since we gave up the |
| 244 | * ilock. However, the data fork will not change since |
| 245 | * we have the iolock (locked for truncation too) so we |
| 246 | * are safe. We don't really care if non-io related |
| 247 | * fields change. |
| 248 | */ |
| 249 | |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 250 | xfs_tosspages(ip, 0, -1, FI_REMAPF); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | |
| 252 | tp = xfs_trans_alloc(mp, XFS_TRANS_SWAPEXT); |
| 253 | if ((error = xfs_trans_reserve(tp, 0, |
| 254 | XFS_ICHANGE_LOG_RES(mp), 0, |
| 255 | 0, 0))) { |
| 256 | xfs_iunlock(ip, XFS_IOLOCK_EXCL); |
| 257 | xfs_iunlock(tip, XFS_IOLOCK_EXCL); |
| 258 | xfs_trans_cancel(tp, 0); |
Eric Sandeen | d0cfb37 | 2005-11-02 10:29:04 +1100 | [diff] [blame] | 259 | locked = 0; |
| 260 | goto error0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | } |
Christoph Hellwig | e1cccd9 | 2008-08-13 16:18:07 +1000 | [diff] [blame] | 262 | xfs_lock_two_inodes(ip, tip, XFS_ILOCK_EXCL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | |
| 264 | /* |
| 265 | * Count the number of extended attribute blocks |
| 266 | */ |
| 267 | if ( ((XFS_IFORK_Q(ip) != 0) && (ip->i_d.di_anextents > 0)) && |
| 268 | (ip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL)) { |
| 269 | error = xfs_bmap_count_blocks(tp, ip, XFS_ATTR_FORK, &aforkblks); |
| 270 | if (error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | xfs_trans_cancel(tp, 0); |
Eric Sandeen | d0cfb37 | 2005-11-02 10:29:04 +1100 | [diff] [blame] | 272 | goto error0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | } |
| 274 | } |
| 275 | if ( ((XFS_IFORK_Q(tip) != 0) && (tip->i_d.di_anextents > 0)) && |
| 276 | (tip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL)) { |
| 277 | error = xfs_bmap_count_blocks(tp, tip, XFS_ATTR_FORK, |
| 278 | &taforkblks); |
| 279 | if (error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | xfs_trans_cancel(tp, 0); |
Eric Sandeen | d0cfb37 | 2005-11-02 10:29:04 +1100 | [diff] [blame] | 281 | goto error0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | } |
| 283 | } |
| 284 | |
| 285 | /* |
| 286 | * Swap the data forks of the inodes |
| 287 | */ |
| 288 | ifp = &ip->i_df; |
| 289 | tifp = &tip->i_df; |
Eric Sandeen | d0cfb37 | 2005-11-02 10:29:04 +1100 | [diff] [blame] | 290 | *tempifp = *ifp; /* struct copy */ |
| 291 | *ifp = *tifp; /* struct copy */ |
| 292 | *tifp = *tempifp; /* struct copy */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | |
| 294 | /* |
| 295 | * Fix the on-disk inode values |
| 296 | */ |
| 297 | tmp = (__uint64_t)ip->i_d.di_nblocks; |
| 298 | ip->i_d.di_nblocks = tip->i_d.di_nblocks - taforkblks + aforkblks; |
| 299 | tip->i_d.di_nblocks = tmp + taforkblks - aforkblks; |
| 300 | |
| 301 | tmp = (__uint64_t) ip->i_d.di_nextents; |
| 302 | ip->i_d.di_nextents = tip->i_d.di_nextents; |
| 303 | tip->i_d.di_nextents = tmp; |
| 304 | |
| 305 | tmp = (__uint64_t) ip->i_d.di_format; |
| 306 | ip->i_d.di_format = tip->i_d.di_format; |
| 307 | tip->i_d.di_format = tmp; |
| 308 | |
| 309 | ilf_fields = XFS_ILOG_CORE; |
| 310 | |
| 311 | switch(ip->i_d.di_format) { |
| 312 | case XFS_DINODE_FMT_EXTENTS: |
| 313 | /* If the extents fit in the inode, fix the |
| 314 | * pointer. Otherwise it's already NULL or |
| 315 | * pointing to the extent. |
| 316 | */ |
| 317 | if (ip->i_d.di_nextents <= XFS_INLINE_EXTS) { |
| 318 | ifp->if_u1.if_extents = |
| 319 | ifp->if_u2.if_inline_ext; |
| 320 | } |
| 321 | ilf_fields |= XFS_ILOG_DEXT; |
| 322 | break; |
| 323 | case XFS_DINODE_FMT_BTREE: |
| 324 | ilf_fields |= XFS_ILOG_DBROOT; |
| 325 | break; |
| 326 | } |
| 327 | |
| 328 | tilf_fields = XFS_ILOG_CORE; |
| 329 | |
| 330 | switch(tip->i_d.di_format) { |
| 331 | case XFS_DINODE_FMT_EXTENTS: |
| 332 | /* If the extents fit in the inode, fix the |
| 333 | * pointer. Otherwise it's already NULL or |
| 334 | * pointing to the extent. |
| 335 | */ |
| 336 | if (tip->i_d.di_nextents <= XFS_INLINE_EXTS) { |
| 337 | tifp->if_u1.if_extents = |
| 338 | tifp->if_u2.if_inline_ext; |
| 339 | } |
| 340 | tilf_fields |= XFS_ILOG_DEXT; |
| 341 | break; |
| 342 | case XFS_DINODE_FMT_BTREE: |
| 343 | tilf_fields |= XFS_ILOG_DBROOT; |
| 344 | break; |
| 345 | } |
| 346 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | |
Christoph Hellwig | 0b1f9177 | 2008-08-13 16:13:09 +1000 | [diff] [blame] | 348 | IHOLD(ip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | xfs_trans_ijoin(tp, ip, lock_flags); |
Christoph Hellwig | 0b1f9177 | 2008-08-13 16:13:09 +1000 | [diff] [blame] | 350 | |
| 351 | IHOLD(tip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | xfs_trans_ijoin(tp, tip, lock_flags); |
| 353 | |
| 354 | xfs_trans_log_inode(tp, ip, ilf_fields); |
| 355 | xfs_trans_log_inode(tp, tip, tilf_fields); |
| 356 | |
| 357 | /* |
| 358 | * If this is a synchronous mount, make sure that the |
| 359 | * transaction goes to disk before returning to the user. |
| 360 | */ |
| 361 | if (mp->m_flags & XFS_MOUNT_WSYNC) { |
| 362 | xfs_trans_set_sync(tp); |
| 363 | } |
| 364 | |
Eric Sandeen | 1c72bf9 | 2007-05-08 13:48:42 +1000 | [diff] [blame] | 365 | error = xfs_trans_commit(tp, XFS_TRANS_SWAPEXT); |
Eric Sandeen | d0cfb37 | 2005-11-02 10:29:04 +1100 | [diff] [blame] | 366 | locked = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | |
| 368 | error0: |
| 369 | if (locked) { |
| 370 | xfs_iunlock(ip, lock_flags); |
| 371 | xfs_iunlock(tip, lock_flags); |
| 372 | } |
Eric Sandeen | d0cfb37 | 2005-11-02 10:29:04 +1100 | [diff] [blame] | 373 | if (tempifp != NULL) |
Denys Vlasenko | f0e2d93 | 2008-05-19 16:31:57 +1000 | [diff] [blame] | 374 | kmem_free(tempifp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | return error; |
| 376 | } |