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) 2000-2005 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" |
| 19 | #include "xfs_fs.h" |
Christoph Hellwig | ef14f0c | 2009-06-10 17:07:47 +0200 | [diff] [blame^] | 20 | #include "xfs_acl.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" |
| 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_alloc.h" |
| 29 | #include "xfs_dmapi.h" |
| 30 | #include "xfs_quota.h" |
| 31 | #include "xfs_mount.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include "xfs_bmap_btree.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 33 | #include "xfs_alloc_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include "xfs_ialloc_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include "xfs_dir2_sf.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 36 | #include "xfs_attr_sf.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include "xfs_dinode.h" |
| 38 | #include "xfs_inode.h" |
| 39 | #include "xfs_bmap.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 40 | #include "xfs_btree.h" |
| 41 | #include "xfs_ialloc.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include "xfs_rtalloc.h" |
| 43 | #include "xfs_error.h" |
| 44 | #include "xfs_itable.h" |
| 45 | #include "xfs_rw.h" |
| 46 | #include "xfs_acl.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #include "xfs_attr.h" |
| 48 | #include "xfs_buf_item.h" |
| 49 | #include "xfs_utils.h" |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 50 | #include "xfs_vnodeops.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
Randy Dunlap | 16f7e0f | 2006-01-11 12:17:46 -0800 | [diff] [blame] | 52 | #include <linux/capability.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #include <linux/xattr.h> |
| 54 | #include <linux/namei.h> |
Christoph Hellwig | ef14f0c | 2009-06-10 17:07:47 +0200 | [diff] [blame^] | 55 | #include <linux/posix_acl.h> |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 56 | #include <linux/security.h> |
David Chinner | 3ed6526 | 2007-11-23 16:29:25 +1100 | [diff] [blame] | 57 | #include <linux/falloc.h> |
Eric Sandeen | f35642e | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 58 | #include <linux/fiemap.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 60 | /* |
Christoph Hellwig | 42fe2b1 | 2006-01-11 15:35:17 +1100 | [diff] [blame] | 61 | * Bring the atime in the XFS inode uptodate. |
| 62 | * Used before logging the inode to disk or when the Linux inode goes away. |
| 63 | */ |
| 64 | void |
| 65 | xfs_synchronize_atime( |
| 66 | xfs_inode_t *ip) |
| 67 | { |
David Chinner | 0165164 | 2008-08-13 15:45:15 +1000 | [diff] [blame] | 68 | struct inode *inode = VFS_I(ip); |
Christoph Hellwig | 42fe2b1 | 2006-01-11 15:35:17 +1100 | [diff] [blame] | 69 | |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 70 | if (!(inode->i_state & I_CLEAR)) { |
Christoph Hellwig | af04819 | 2008-03-06 13:46:43 +1100 | [diff] [blame] | 71 | ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec; |
| 72 | ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec; |
Christoph Hellwig | 42fe2b1 | 2006-01-11 15:35:17 +1100 | [diff] [blame] | 73 | } |
| 74 | } |
| 75 | |
| 76 | /* |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 77 | * If the linux inode is valid, mark it dirty. |
David Chinner | 5d51eff | 2007-11-23 16:29:18 +1100 | [diff] [blame] | 78 | * Used when commiting a dirty inode into a transaction so that |
| 79 | * the inode will get written back by the linux code |
| 80 | */ |
| 81 | void |
| 82 | xfs_mark_inode_dirty_sync( |
| 83 | xfs_inode_t *ip) |
| 84 | { |
David Chinner | 0165164 | 2008-08-13 15:45:15 +1000 | [diff] [blame] | 85 | struct inode *inode = VFS_I(ip); |
David Chinner | 5d51eff | 2007-11-23 16:29:18 +1100 | [diff] [blame] | 86 | |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 87 | if (!(inode->i_state & (I_WILL_FREE|I_FREEING|I_CLEAR))) |
Christoph Hellwig | af04819 | 2008-03-06 13:46:43 +1100 | [diff] [blame] | 88 | mark_inode_dirty_sync(inode); |
David Chinner | 5d51eff | 2007-11-23 16:29:18 +1100 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | /* |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 92 | * Change the requested timestamp in the given inode. |
| 93 | * We don't lock across timestamp updates, and we don't log them but |
| 94 | * we do record the fact that there is dirty information in core. |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 95 | */ |
| 96 | void |
| 97 | xfs_ichgtime( |
| 98 | xfs_inode_t *ip, |
| 99 | int flags) |
| 100 | { |
David Chinner | e4f7529 | 2008-08-13 16:00:45 +1000 | [diff] [blame] | 101 | struct inode *inode = VFS_I(ip); |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 102 | timespec_t tv; |
Christoph Hellwig | 8e5975c | 2008-08-13 16:45:13 +1000 | [diff] [blame] | 103 | int sync_it = 0; |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 104 | |
Christoph Hellwig | 8e5975c | 2008-08-13 16:45:13 +1000 | [diff] [blame] | 105 | tv = current_fs_time(inode->i_sb); |
| 106 | |
| 107 | if ((flags & XFS_ICHGTIME_MOD) && |
| 108 | !timespec_equal(&inode->i_mtime, &tv)) { |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 109 | inode->i_mtime = tv; |
| 110 | ip->i_d.di_mtime.t_sec = (__int32_t)tv.tv_sec; |
| 111 | ip->i_d.di_mtime.t_nsec = (__int32_t)tv.tv_nsec; |
Christoph Hellwig | 8e5975c | 2008-08-13 16:45:13 +1000 | [diff] [blame] | 112 | sync_it = 1; |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 113 | } |
Christoph Hellwig | 8e5975c | 2008-08-13 16:45:13 +1000 | [diff] [blame] | 114 | if ((flags & XFS_ICHGTIME_CHG) && |
| 115 | !timespec_equal(&inode->i_ctime, &tv)) { |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 116 | inode->i_ctime = tv; |
| 117 | ip->i_d.di_ctime.t_sec = (__int32_t)tv.tv_sec; |
| 118 | ip->i_d.di_ctime.t_nsec = (__int32_t)tv.tv_nsec; |
Christoph Hellwig | 8e5975c | 2008-08-13 16:45:13 +1000 | [diff] [blame] | 119 | sync_it = 1; |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 120 | } |
| 121 | |
| 122 | /* |
| 123 | * We update the i_update_core field _after_ changing |
| 124 | * the timestamps in order to coordinate properly with |
| 125 | * xfs_iflush() so that we don't lose timestamp updates. |
| 126 | * This keeps us from having to hold the inode lock |
| 127 | * while doing this. We use the SYNCHRONIZE macro to |
| 128 | * ensure that the compiler does not reorder the update |
| 129 | * of i_update_core above the timestamp updates above. |
| 130 | */ |
Christoph Hellwig | 8e5975c | 2008-08-13 16:45:13 +1000 | [diff] [blame] | 131 | if (sync_it) { |
| 132 | SYNCHRONIZE(); |
| 133 | ip->i_update_core = 1; |
David Chinner | 94b97e3 | 2008-10-30 17:21:30 +1100 | [diff] [blame] | 134 | xfs_mark_inode_dirty_sync(ip); |
Christoph Hellwig | 8e5975c | 2008-08-13 16:45:13 +1000 | [diff] [blame] | 135 | } |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 136 | } |
| 137 | |
| 138 | /* |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 139 | * Hook in SELinux. This is not quite correct yet, what we really need |
| 140 | * here (as we do for default ACLs) is a mechanism by which creation of |
| 141 | * these attrs can be journalled at inode creation time (along with the |
| 142 | * inode, of course, such that log replay can't cause these to be lost). |
| 143 | */ |
| 144 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 145 | xfs_init_security( |
Christoph Hellwig | af04819 | 2008-03-06 13:46:43 +1100 | [diff] [blame] | 146 | struct inode *inode, |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 147 | struct inode *dir) |
| 148 | { |
Christoph Hellwig | af04819 | 2008-03-06 13:46:43 +1100 | [diff] [blame] | 149 | struct xfs_inode *ip = XFS_I(inode); |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 150 | size_t length; |
| 151 | void *value; |
| 152 | char *name; |
| 153 | int error; |
| 154 | |
Christoph Hellwig | af04819 | 2008-03-06 13:46:43 +1100 | [diff] [blame] | 155 | error = security_inode_init_security(inode, dir, &name, |
| 156 | &value, &length); |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 157 | if (error) { |
| 158 | if (error == -EOPNOTSUPP) |
| 159 | return 0; |
| 160 | return -error; |
| 161 | } |
| 162 | |
Christoph Hellwig | af04819 | 2008-03-06 13:46:43 +1100 | [diff] [blame] | 163 | error = xfs_attr_set(ip, name, value, length, ATTR_SECURE); |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 164 | |
| 165 | kfree(name); |
| 166 | kfree(value); |
| 167 | return error; |
| 168 | } |
| 169 | |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 170 | static void |
| 171 | xfs_dentry_to_name( |
| 172 | struct xfs_name *namep, |
| 173 | struct dentry *dentry) |
| 174 | { |
| 175 | namep->name = dentry->d_name.name; |
| 176 | namep->len = dentry->d_name.len; |
| 177 | } |
| 178 | |
David Chinner | 7989cb8 | 2007-02-10 18:34:56 +1100 | [diff] [blame] | 179 | STATIC void |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 180 | xfs_cleanup_inode( |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 181 | struct inode *dir, |
Christoph Hellwig | af04819 | 2008-03-06 13:46:43 +1100 | [diff] [blame] | 182 | struct inode *inode, |
Christoph Hellwig | 8f112e3 | 2008-06-23 13:25:17 +1000 | [diff] [blame] | 183 | struct dentry *dentry) |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 184 | { |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 185 | struct xfs_name teardown; |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 186 | |
| 187 | /* Oh, the horror. |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 188 | * If we can't add the ACL or we fail in |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 189 | * xfs_init_security we must back out. |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 190 | * ENOSPC can hit here, among other things. |
| 191 | */ |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 192 | xfs_dentry_to_name(&teardown, dentry); |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 193 | |
Christoph Hellwig | 8f112e3 | 2008-06-23 13:25:17 +1000 | [diff] [blame] | 194 | xfs_remove(XFS_I(dir), &teardown, XFS_I(inode)); |
Christoph Hellwig | af04819 | 2008-03-06 13:46:43 +1100 | [diff] [blame] | 195 | iput(inode); |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 196 | } |
| 197 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 199 | xfs_vn_mknod( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | struct inode *dir, |
| 201 | struct dentry *dentry, |
| 202 | int mode, |
| 203 | dev_t rdev) |
| 204 | { |
Christoph Hellwig | db0bb7b | 2008-03-06 13:44:35 +1100 | [diff] [blame] | 205 | struct inode *inode; |
Christoph Hellwig | 979ebab | 2008-03-06 13:46:05 +1100 | [diff] [blame] | 206 | struct xfs_inode *ip = NULL; |
Christoph Hellwig | ef14f0c | 2009-06-10 17:07:47 +0200 | [diff] [blame^] | 207 | struct posix_acl *default_acl = NULL; |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 208 | struct xfs_name name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | int error; |
| 210 | |
| 211 | /* |
| 212 | * Irix uses Missed'em'V split, but doesn't want to see |
| 213 | * the upper 5 bits of (14bit) major. |
| 214 | */ |
Christoph Hellwig | 517b5e8 | 2009-02-09 08:38:02 +0100 | [diff] [blame] | 215 | if (S_ISCHR(mode) || S_ISBLK(mode)) { |
| 216 | if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) |
| 217 | return -EINVAL; |
| 218 | rdev = sysv_encode_dev(rdev); |
| 219 | } else { |
| 220 | rdev = 0; |
| 221 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | |
Christoph Hellwig | ef14f0c | 2009-06-10 17:07:47 +0200 | [diff] [blame^] | 223 | if (IS_POSIXACL(dir)) { |
| 224 | default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT); |
| 225 | if (IS_ERR(default_acl)) |
| 226 | return -PTR_ERR(default_acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | |
Christoph Hellwig | ef14f0c | 2009-06-10 17:07:47 +0200 | [diff] [blame^] | 228 | if (!default_acl) |
| 229 | mode &= ~current->fs->umask; |
| 230 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | |
Christoph Hellwig | 517b5e8 | 2009-02-09 08:38:02 +0100 | [diff] [blame] | 232 | xfs_dentry_to_name(&name, dentry); |
| 233 | error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip, NULL); |
Christoph Hellwig | db0bb7b | 2008-03-06 13:44:35 +1100 | [diff] [blame] | 234 | if (unlikely(error)) |
| 235 | goto out_free_acl; |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 236 | |
David Chinner | 0165164 | 2008-08-13 15:45:15 +1000 | [diff] [blame] | 237 | inode = VFS_I(ip); |
Christoph Hellwig | 979ebab | 2008-03-06 13:46:05 +1100 | [diff] [blame] | 238 | |
| 239 | error = xfs_init_security(inode, dir); |
Christoph Hellwig | db0bb7b | 2008-03-06 13:44:35 +1100 | [diff] [blame] | 240 | if (unlikely(error)) |
| 241 | goto out_cleanup_inode; |
| 242 | |
| 243 | if (default_acl) { |
Christoph Hellwig | ef14f0c | 2009-06-10 17:07:47 +0200 | [diff] [blame^] | 244 | error = -xfs_inherit_acl(inode, default_acl); |
Christoph Hellwig | db0bb7b | 2008-03-06 13:44:35 +1100 | [diff] [blame] | 245 | if (unlikely(error)) |
| 246 | goto out_cleanup_inode; |
Christoph Hellwig | ef14f0c | 2009-06-10 17:07:47 +0200 | [diff] [blame^] | 247 | posix_acl_release(default_acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | } |
| 249 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | |
Christoph Hellwig | db0bb7b | 2008-03-06 13:44:35 +1100 | [diff] [blame] | 251 | d_instantiate(dentry, inode); |
Christoph Hellwig | db0bb7b | 2008-03-06 13:44:35 +1100 | [diff] [blame] | 252 | return -error; |
| 253 | |
| 254 | out_cleanup_inode: |
Christoph Hellwig | 8f112e3 | 2008-06-23 13:25:17 +1000 | [diff] [blame] | 255 | xfs_cleanup_inode(dir, inode, dentry); |
Christoph Hellwig | db0bb7b | 2008-03-06 13:44:35 +1100 | [diff] [blame] | 256 | out_free_acl: |
Christoph Hellwig | ef14f0c | 2009-06-10 17:07:47 +0200 | [diff] [blame^] | 257 | posix_acl_release(default_acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | return -error; |
| 259 | } |
| 260 | |
| 261 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 262 | xfs_vn_create( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | struct inode *dir, |
| 264 | struct dentry *dentry, |
| 265 | int mode, |
| 266 | struct nameidata *nd) |
| 267 | { |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 268 | return xfs_vn_mknod(dir, dentry, mode, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | } |
| 270 | |
| 271 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 272 | xfs_vn_mkdir( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | struct inode *dir, |
| 274 | struct dentry *dentry, |
| 275 | int mode) |
| 276 | { |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 277 | return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | STATIC struct dentry * |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 281 | xfs_vn_lookup( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | struct inode *dir, |
| 283 | struct dentry *dentry, |
| 284 | struct nameidata *nd) |
| 285 | { |
Christoph Hellwig | ef1f5e7 | 2008-03-06 13:46:25 +1100 | [diff] [blame] | 286 | struct xfs_inode *cip; |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 287 | struct xfs_name name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | int error; |
| 289 | |
| 290 | if (dentry->d_name.len >= MAXNAMELEN) |
| 291 | return ERR_PTR(-ENAMETOOLONG); |
| 292 | |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 293 | xfs_dentry_to_name(&name, dentry); |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 294 | error = xfs_lookup(XFS_I(dir), &name, &cip, NULL); |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 295 | if (unlikely(error)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | if (unlikely(error != ENOENT)) |
| 297 | return ERR_PTR(-error); |
| 298 | d_add(dentry, NULL); |
| 299 | return NULL; |
| 300 | } |
| 301 | |
David Chinner | 0165164 | 2008-08-13 15:45:15 +1000 | [diff] [blame] | 302 | return d_splice_alias(VFS_I(cip), dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | } |
| 304 | |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 305 | STATIC struct dentry * |
| 306 | xfs_vn_ci_lookup( |
| 307 | struct inode *dir, |
| 308 | struct dentry *dentry, |
| 309 | struct nameidata *nd) |
| 310 | { |
| 311 | struct xfs_inode *ip; |
| 312 | struct xfs_name xname; |
| 313 | struct xfs_name ci_name; |
| 314 | struct qstr dname; |
| 315 | int error; |
| 316 | |
| 317 | if (dentry->d_name.len >= MAXNAMELEN) |
| 318 | return ERR_PTR(-ENAMETOOLONG); |
| 319 | |
| 320 | xfs_dentry_to_name(&xname, dentry); |
| 321 | error = xfs_lookup(XFS_I(dir), &xname, &ip, &ci_name); |
| 322 | if (unlikely(error)) { |
| 323 | if (unlikely(error != ENOENT)) |
| 324 | return ERR_PTR(-error); |
Barry Naujok | 866d5dc | 2008-05-22 17:21:40 +1000 | [diff] [blame] | 325 | /* |
| 326 | * call d_add(dentry, NULL) here when d_drop_negative_children |
| 327 | * is called in xfs_vn_mknod (ie. allow negative dentries |
| 328 | * with CI filesystems). |
| 329 | */ |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 330 | return NULL; |
| 331 | } |
| 332 | |
| 333 | /* if exact match, just splice and exit */ |
| 334 | if (!ci_name.name) |
David Chinner | 0165164 | 2008-08-13 15:45:15 +1000 | [diff] [blame] | 335 | return d_splice_alias(VFS_I(ip), dentry); |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 336 | |
| 337 | /* else case-insensitive match... */ |
| 338 | dname.name = ci_name.name; |
| 339 | dname.len = ci_name.len; |
Christoph Hellwig | e45b590 | 2008-08-07 23:49:07 +0200 | [diff] [blame] | 340 | dentry = d_add_ci(dentry, VFS_I(ip), &dname); |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 341 | kmem_free(ci_name.name); |
| 342 | return dentry; |
| 343 | } |
| 344 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 346 | xfs_vn_link( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | struct dentry *old_dentry, |
| 348 | struct inode *dir, |
| 349 | struct dentry *dentry) |
| 350 | { |
Christoph Hellwig | d9424b3 | 2008-12-03 12:20:27 +0100 | [diff] [blame] | 351 | struct inode *inode = old_dentry->d_inode; |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 352 | struct xfs_name name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | int error; |
| 354 | |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 355 | xfs_dentry_to_name(&name, dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 357 | error = xfs_link(XFS_I(dir), XFS_I(inode), &name); |
Christoph Hellwig | d9424b3 | 2008-12-03 12:20:27 +0100 | [diff] [blame] | 358 | if (unlikely(error)) |
Christoph Hellwig | a3da789 | 2008-03-06 13:46:12 +1100 | [diff] [blame] | 359 | return -error; |
Christoph Hellwig | a3da789 | 2008-03-06 13:46:12 +1100 | [diff] [blame] | 360 | |
Christoph Hellwig | d9424b3 | 2008-12-03 12:20:27 +0100 | [diff] [blame] | 361 | atomic_inc(&inode->i_count); |
Christoph Hellwig | a3da789 | 2008-03-06 13:46:12 +1100 | [diff] [blame] | 362 | d_instantiate(dentry, inode); |
| 363 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | } |
| 365 | |
| 366 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 367 | xfs_vn_unlink( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | struct inode *dir, |
| 369 | struct dentry *dentry) |
| 370 | { |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 371 | struct xfs_name name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | int error; |
| 373 | |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 374 | xfs_dentry_to_name(&name, dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | |
Christoph Hellwig | e570070 | 2008-06-23 13:25:25 +1000 | [diff] [blame] | 376 | error = -xfs_remove(XFS_I(dir), &name, XFS_I(dentry->d_inode)); |
| 377 | if (error) |
| 378 | return error; |
| 379 | |
| 380 | /* |
| 381 | * With unlink, the VFS makes the dentry "negative": no inode, |
| 382 | * but still hashed. This is incompatible with case-insensitive |
| 383 | * mode, so invalidate (unhash) the dentry in CI-mode. |
| 384 | */ |
| 385 | if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb)) |
| 386 | d_invalidate(dentry); |
| 387 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | } |
| 389 | |
| 390 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 391 | xfs_vn_symlink( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | struct inode *dir, |
| 393 | struct dentry *dentry, |
| 394 | const char *symname) |
| 395 | { |
Christoph Hellwig | 3937be5 | 2008-03-06 13:46:19 +1100 | [diff] [blame] | 396 | struct inode *inode; |
| 397 | struct xfs_inode *cip = NULL; |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 398 | struct xfs_name name; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | int error; |
Christoph Hellwig | 3e5daf0 | 2007-10-11 18:09:12 +1000 | [diff] [blame] | 400 | mode_t mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | |
Christoph Hellwig | 3e5daf0 | 2007-10-11 18:09:12 +1000 | [diff] [blame] | 402 | mode = S_IFLNK | |
Christoph Hellwig | 0432dab | 2005-09-02 16:46:51 +1000 | [diff] [blame] | 403 | (irix_symlink_mode ? 0777 & ~current->fs->umask : S_IRWXUGO); |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 404 | xfs_dentry_to_name(&name, dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 406 | error = xfs_symlink(XFS_I(dir), &name, symname, mode, &cip, NULL); |
Christoph Hellwig | 3937be5 | 2008-03-06 13:46:19 +1100 | [diff] [blame] | 407 | if (unlikely(error)) |
| 408 | goto out; |
| 409 | |
David Chinner | 0165164 | 2008-08-13 15:45:15 +1000 | [diff] [blame] | 410 | inode = VFS_I(cip); |
Christoph Hellwig | 3937be5 | 2008-03-06 13:46:19 +1100 | [diff] [blame] | 411 | |
| 412 | error = xfs_init_security(inode, dir); |
| 413 | if (unlikely(error)) |
| 414 | goto out_cleanup_inode; |
| 415 | |
| 416 | d_instantiate(dentry, inode); |
Christoph Hellwig | 3937be5 | 2008-03-06 13:46:19 +1100 | [diff] [blame] | 417 | return 0; |
| 418 | |
| 419 | out_cleanup_inode: |
Christoph Hellwig | 8f112e3 | 2008-06-23 13:25:17 +1000 | [diff] [blame] | 420 | xfs_cleanup_inode(dir, inode, dentry); |
Christoph Hellwig | 3937be5 | 2008-03-06 13:46:19 +1100 | [diff] [blame] | 421 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | return -error; |
| 423 | } |
| 424 | |
| 425 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 426 | xfs_vn_rename( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | struct inode *odir, |
| 428 | struct dentry *odentry, |
| 429 | struct inode *ndir, |
| 430 | struct dentry *ndentry) |
| 431 | { |
| 432 | struct inode *new_inode = ndentry->d_inode; |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 433 | struct xfs_name oname; |
| 434 | struct xfs_name nname; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | |
Barry Naujok | 556b8b1 | 2008-04-10 12:22:07 +1000 | [diff] [blame] | 436 | xfs_dentry_to_name(&oname, odentry); |
| 437 | xfs_dentry_to_name(&nname, ndentry); |
| 438 | |
Christoph Hellwig | e570070 | 2008-06-23 13:25:25 +1000 | [diff] [blame] | 439 | return -xfs_rename(XFS_I(odir), &oname, XFS_I(odentry->d_inode), |
Christoph Hellwig | cfa853e | 2008-04-22 17:34:06 +1000 | [diff] [blame] | 440 | XFS_I(ndir), &nname, new_inode ? |
| 441 | XFS_I(new_inode) : NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | } |
| 443 | |
| 444 | /* |
| 445 | * careful here - this function can get called recursively, so |
| 446 | * we need to be very careful about how much stack we use. |
| 447 | * uio is kmalloced for this reason... |
| 448 | */ |
Al Viro | 008b150 | 2005-08-20 00:17:39 +0100 | [diff] [blame] | 449 | STATIC void * |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 450 | xfs_vn_follow_link( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | struct dentry *dentry, |
| 452 | struct nameidata *nd) |
| 453 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | char *link; |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 455 | int error = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | |
Panagiotis Issaris | f52720c | 2006-09-27 01:49:39 -0700 | [diff] [blame] | 457 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 458 | if (!link) |
| 459 | goto out_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 461 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 462 | if (unlikely(error)) |
| 463 | goto out_kfree; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | |
| 465 | nd_set_link(nd, link); |
Al Viro | 008b150 | 2005-08-20 00:17:39 +0100 | [diff] [blame] | 466 | return NULL; |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 467 | |
| 468 | out_kfree: |
| 469 | kfree(link); |
| 470 | out_err: |
| 471 | nd_set_link(nd, ERR_PTR(error)); |
| 472 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | } |
| 474 | |
Nathan Scott | cde410a | 2005-09-05 11:47:01 +1000 | [diff] [blame] | 475 | STATIC void |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 476 | xfs_vn_put_link( |
Nathan Scott | cde410a | 2005-09-05 11:47:01 +1000 | [diff] [blame] | 477 | struct dentry *dentry, |
| 478 | struct nameidata *nd, |
| 479 | void *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | { |
Nathan Scott | cde410a | 2005-09-05 11:47:01 +1000 | [diff] [blame] | 481 | char *s = nd_get_link(nd); |
| 482 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | if (!IS_ERR(s)) |
| 484 | kfree(s); |
| 485 | } |
| 486 | |
Christoph Hellwig | 4576758 | 2008-02-05 12:13:24 +1100 | [diff] [blame] | 487 | STATIC int |
| 488 | xfs_vn_permission( |
| 489 | struct inode *inode, |
Al Viro | e6305c4 | 2008-07-15 21:03:57 -0400 | [diff] [blame] | 490 | int mask) |
Christoph Hellwig | 4576758 | 2008-02-05 12:13:24 +1100 | [diff] [blame] | 491 | { |
| 492 | return generic_permission(inode, mask, xfs_check_acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | |
| 495 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 496 | xfs_vn_getattr( |
Christoph Hellwig | c43f408 | 2007-10-11 17:46:39 +1000 | [diff] [blame] | 497 | struct vfsmount *mnt, |
| 498 | struct dentry *dentry, |
| 499 | struct kstat *stat) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | { |
Christoph Hellwig | c43f408 | 2007-10-11 17:46:39 +1000 | [diff] [blame] | 501 | struct inode *inode = dentry->d_inode; |
| 502 | struct xfs_inode *ip = XFS_I(inode); |
| 503 | struct xfs_mount *mp = ip->i_mount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | |
Christoph Hellwig | c43f408 | 2007-10-11 17:46:39 +1000 | [diff] [blame] | 505 | xfs_itrace_entry(ip); |
| 506 | |
| 507 | if (XFS_FORCED_SHUTDOWN(mp)) |
| 508 | return XFS_ERROR(EIO); |
| 509 | |
| 510 | stat->size = XFS_ISIZE(ip); |
| 511 | stat->dev = inode->i_sb->s_dev; |
| 512 | stat->mode = ip->i_d.di_mode; |
| 513 | stat->nlink = ip->i_d.di_nlink; |
| 514 | stat->uid = ip->i_d.di_uid; |
| 515 | stat->gid = ip->i_d.di_gid; |
| 516 | stat->ino = ip->i_ino; |
Christoph Hellwig | c43f408 | 2007-10-11 17:46:39 +1000 | [diff] [blame] | 517 | stat->atime = inode->i_atime; |
| 518 | stat->mtime.tv_sec = ip->i_d.di_mtime.t_sec; |
| 519 | stat->mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; |
| 520 | stat->ctime.tv_sec = ip->i_d.di_ctime.t_sec; |
| 521 | stat->ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; |
| 522 | stat->blocks = |
| 523 | XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks); |
| 524 | |
| 525 | |
| 526 | switch (inode->i_mode & S_IFMT) { |
| 527 | case S_IFBLK: |
| 528 | case S_IFCHR: |
| 529 | stat->blksize = BLKDEV_IOSIZE; |
| 530 | stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, |
| 531 | sysv_minor(ip->i_df.if_u2.if_rdev)); |
| 532 | break; |
| 533 | default: |
Eric Sandeen | 71ddabb | 2007-11-23 16:29:42 +1100 | [diff] [blame] | 534 | if (XFS_IS_REALTIME_INODE(ip)) { |
Christoph Hellwig | c43f408 | 2007-10-11 17:46:39 +1000 | [diff] [blame] | 535 | /* |
| 536 | * If the file blocks are being allocated from a |
| 537 | * realtime volume, then return the inode's realtime |
| 538 | * extent size or the realtime volume's extent size. |
| 539 | */ |
| 540 | stat->blksize = |
| 541 | xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; |
| 542 | } else |
| 543 | stat->blksize = xfs_preferred_iosize(mp); |
| 544 | stat->rdev = 0; |
| 545 | break; |
Nathan Scott | 69e23b9 | 2006-09-28 11:01:22 +1000 | [diff] [blame] | 546 | } |
Christoph Hellwig | c43f408 | 2007-10-11 17:46:39 +1000 | [diff] [blame] | 547 | |
| 548 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | } |
| 550 | |
| 551 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 552 | xfs_vn_setattr( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | struct dentry *dentry, |
Christoph Hellwig | 0f285c8 | 2008-07-18 17:13:28 +1000 | [diff] [blame] | 554 | struct iattr *iattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | { |
Christoph Hellwig | ea5a3dc8 | 2008-10-30 18:27:48 +1100 | [diff] [blame] | 556 | return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | } |
| 558 | |
David Chinner | d87dd63 | 2008-04-10 12:21:46 +1000 | [diff] [blame] | 559 | /* |
| 560 | * block_truncate_page can return an error, but we can't propagate it |
| 561 | * at all here. Leave a complaint + stack trace in the syslog because |
| 562 | * this could be bad. If it is bad, we need to propagate the error further. |
| 563 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | STATIC void |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 565 | xfs_vn_truncate( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | struct inode *inode) |
| 567 | { |
David Chinner | d87dd63 | 2008-04-10 12:21:46 +1000 | [diff] [blame] | 568 | int error; |
| 569 | error = block_truncate_page(inode->i_mapping, inode->i_size, |
| 570 | xfs_get_blocks); |
| 571 | WARN_ON(error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | } |
| 573 | |
David Chinner | 3ed6526 | 2007-11-23 16:29:25 +1100 | [diff] [blame] | 574 | STATIC long |
| 575 | xfs_vn_fallocate( |
| 576 | struct inode *inode, |
| 577 | int mode, |
| 578 | loff_t offset, |
| 579 | loff_t len) |
| 580 | { |
| 581 | long error; |
| 582 | loff_t new_size = 0; |
| 583 | xfs_flock64_t bf; |
| 584 | xfs_inode_t *ip = XFS_I(inode); |
| 585 | |
| 586 | /* preallocation on directories not yet supported */ |
| 587 | error = -ENODEV; |
| 588 | if (S_ISDIR(inode->i_mode)) |
| 589 | goto out_error; |
| 590 | |
| 591 | bf.l_whence = 0; |
| 592 | bf.l_start = offset; |
| 593 | bf.l_len = len; |
| 594 | |
| 595 | xfs_ilock(ip, XFS_IOLOCK_EXCL); |
| 596 | error = xfs_change_file_space(ip, XFS_IOC_RESVSP, &bf, |
Christoph Hellwig | ea5a3dc8 | 2008-10-30 18:27:48 +1100 | [diff] [blame] | 597 | 0, XFS_ATTR_NOLOCK); |
David Chinner | 3ed6526 | 2007-11-23 16:29:25 +1100 | [diff] [blame] | 598 | if (!error && !(mode & FALLOC_FL_KEEP_SIZE) && |
| 599 | offset + len > i_size_read(inode)) |
| 600 | new_size = offset + len; |
| 601 | |
| 602 | /* Change file size if needed */ |
| 603 | if (new_size) { |
Christoph Hellwig | 0f285c8 | 2008-07-18 17:13:28 +1000 | [diff] [blame] | 604 | struct iattr iattr; |
David Chinner | 3ed6526 | 2007-11-23 16:29:25 +1100 | [diff] [blame] | 605 | |
Christoph Hellwig | 0f285c8 | 2008-07-18 17:13:28 +1000 | [diff] [blame] | 606 | iattr.ia_valid = ATTR_SIZE; |
| 607 | iattr.ia_size = new_size; |
Christoph Hellwig | ea5a3dc8 | 2008-10-30 18:27:48 +1100 | [diff] [blame] | 608 | error = xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK); |
David Chinner | 3ed6526 | 2007-11-23 16:29:25 +1100 | [diff] [blame] | 609 | } |
| 610 | |
| 611 | xfs_iunlock(ip, XFS_IOLOCK_EXCL); |
| 612 | out_error: |
| 613 | return error; |
| 614 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | |
Eric Sandeen | f35642e | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 616 | #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) |
| 617 | |
| 618 | /* |
| 619 | * Call fiemap helper to fill in user data. |
| 620 | * Returns positive errors to xfs_getbmap. |
| 621 | */ |
| 622 | STATIC int |
| 623 | xfs_fiemap_format( |
| 624 | void **arg, |
| 625 | struct getbmapx *bmv, |
| 626 | int *full) |
| 627 | { |
| 628 | int error; |
| 629 | struct fiemap_extent_info *fieinfo = *arg; |
| 630 | u32 fiemap_flags = 0; |
| 631 | u64 logical, physical, length; |
| 632 | |
| 633 | /* Do nothing for a hole */ |
| 634 | if (bmv->bmv_block == -1LL) |
| 635 | return 0; |
| 636 | |
| 637 | logical = BBTOB(bmv->bmv_offset); |
| 638 | physical = BBTOB(bmv->bmv_block); |
| 639 | length = BBTOB(bmv->bmv_length); |
| 640 | |
| 641 | if (bmv->bmv_oflags & BMV_OF_PREALLOC) |
| 642 | fiemap_flags |= FIEMAP_EXTENT_UNWRITTEN; |
| 643 | else if (bmv->bmv_oflags & BMV_OF_DELALLOC) { |
| 644 | fiemap_flags |= FIEMAP_EXTENT_DELALLOC; |
| 645 | physical = 0; /* no block yet */ |
| 646 | } |
| 647 | if (bmv->bmv_oflags & BMV_OF_LAST) |
| 648 | fiemap_flags |= FIEMAP_EXTENT_LAST; |
| 649 | |
| 650 | error = fiemap_fill_next_extent(fieinfo, logical, physical, |
| 651 | length, fiemap_flags); |
| 652 | if (error > 0) { |
| 653 | error = 0; |
| 654 | *full = 1; /* user array now full */ |
| 655 | } |
| 656 | |
| 657 | return -error; |
| 658 | } |
| 659 | |
| 660 | STATIC int |
| 661 | xfs_vn_fiemap( |
| 662 | struct inode *inode, |
| 663 | struct fiemap_extent_info *fieinfo, |
| 664 | u64 start, |
| 665 | u64 length) |
| 666 | { |
| 667 | xfs_inode_t *ip = XFS_I(inode); |
| 668 | struct getbmapx bm; |
| 669 | int error; |
| 670 | |
| 671 | error = fiemap_check_flags(fieinfo, XFS_FIEMAP_FLAGS); |
| 672 | if (error) |
| 673 | return error; |
| 674 | |
| 675 | /* Set up bmap header for xfs internal routine */ |
| 676 | bm.bmv_offset = BTOBB(start); |
| 677 | /* Special case for whole file */ |
| 678 | if (length == FIEMAP_MAX_OFFSET) |
| 679 | bm.bmv_length = -1LL; |
| 680 | else |
| 681 | bm.bmv_length = BTOBB(length); |
| 682 | |
| 683 | /* our formatter will tell xfs_getbmap when to stop. */ |
| 684 | bm.bmv_count = MAXEXTNUM; |
| 685 | bm.bmv_iflags = BMV_IF_PREALLOC; |
| 686 | if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) |
| 687 | bm.bmv_iflags |= BMV_IF_ATTRFORK; |
| 688 | if (!(fieinfo->fi_flags & FIEMAP_FLAG_SYNC)) |
| 689 | bm.bmv_iflags |= BMV_IF_DELALLOC; |
| 690 | |
| 691 | error = xfs_getbmap(ip, &bm, xfs_fiemap_format, fieinfo); |
| 692 | if (error) |
| 693 | return -error; |
| 694 | |
| 695 | return 0; |
| 696 | } |
| 697 | |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 698 | static const struct inode_operations xfs_inode_operations = { |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 699 | .permission = xfs_vn_permission, |
| 700 | .truncate = xfs_vn_truncate, |
| 701 | .getattr = xfs_vn_getattr, |
| 702 | .setattr = xfs_vn_setattr, |
Lachlan McIlroy | 0ec5851 | 2008-06-23 13:23:01 +1000 | [diff] [blame] | 703 | .setxattr = generic_setxattr, |
| 704 | .getxattr = generic_getxattr, |
| 705 | .removexattr = generic_removexattr, |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 706 | .listxattr = xfs_vn_listxattr, |
David Chinner | 3ed6526 | 2007-11-23 16:29:25 +1100 | [diff] [blame] | 707 | .fallocate = xfs_vn_fallocate, |
Eric Sandeen | f35642e | 2008-11-28 14:23:35 +1100 | [diff] [blame] | 708 | .fiemap = xfs_vn_fiemap, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | }; |
| 710 | |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 711 | static const struct inode_operations xfs_dir_inode_operations = { |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 712 | .create = xfs_vn_create, |
| 713 | .lookup = xfs_vn_lookup, |
| 714 | .link = xfs_vn_link, |
| 715 | .unlink = xfs_vn_unlink, |
| 716 | .symlink = xfs_vn_symlink, |
| 717 | .mkdir = xfs_vn_mkdir, |
Christoph Hellwig | 8f112e3 | 2008-06-23 13:25:17 +1000 | [diff] [blame] | 718 | /* |
| 719 | * Yes, XFS uses the same method for rmdir and unlink. |
| 720 | * |
| 721 | * There are some subtile differences deeper in the code, |
| 722 | * but we use S_ISDIR to check for those. |
| 723 | */ |
| 724 | .rmdir = xfs_vn_unlink, |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 725 | .mknod = xfs_vn_mknod, |
| 726 | .rename = xfs_vn_rename, |
| 727 | .permission = xfs_vn_permission, |
| 728 | .getattr = xfs_vn_getattr, |
| 729 | .setattr = xfs_vn_setattr, |
Lachlan McIlroy | 0ec5851 | 2008-06-23 13:23:01 +1000 | [diff] [blame] | 730 | .setxattr = generic_setxattr, |
| 731 | .getxattr = generic_getxattr, |
| 732 | .removexattr = generic_removexattr, |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 733 | .listxattr = xfs_vn_listxattr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | }; |
| 735 | |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 736 | static const struct inode_operations xfs_dir_ci_inode_operations = { |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 737 | .create = xfs_vn_create, |
| 738 | .lookup = xfs_vn_ci_lookup, |
| 739 | .link = xfs_vn_link, |
| 740 | .unlink = xfs_vn_unlink, |
| 741 | .symlink = xfs_vn_symlink, |
| 742 | .mkdir = xfs_vn_mkdir, |
Christoph Hellwig | 8f112e3 | 2008-06-23 13:25:17 +1000 | [diff] [blame] | 743 | /* |
| 744 | * Yes, XFS uses the same method for rmdir and unlink. |
| 745 | * |
| 746 | * There are some subtile differences deeper in the code, |
| 747 | * but we use S_ISDIR to check for those. |
| 748 | */ |
| 749 | .rmdir = xfs_vn_unlink, |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 750 | .mknod = xfs_vn_mknod, |
| 751 | .rename = xfs_vn_rename, |
| 752 | .permission = xfs_vn_permission, |
| 753 | .getattr = xfs_vn_getattr, |
| 754 | .setattr = xfs_vn_setattr, |
Lachlan McIlroy | 0ec5851 | 2008-06-23 13:23:01 +1000 | [diff] [blame] | 755 | .setxattr = generic_setxattr, |
| 756 | .getxattr = generic_getxattr, |
| 757 | .removexattr = generic_removexattr, |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 758 | .listxattr = xfs_vn_listxattr, |
Barry Naujok | 384f3ce | 2008-05-21 16:58:22 +1000 | [diff] [blame] | 759 | }; |
| 760 | |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 761 | static const struct inode_operations xfs_symlink_inode_operations = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | .readlink = generic_readlink, |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 763 | .follow_link = xfs_vn_follow_link, |
| 764 | .put_link = xfs_vn_put_link, |
| 765 | .permission = xfs_vn_permission, |
| 766 | .getattr = xfs_vn_getattr, |
| 767 | .setattr = xfs_vn_setattr, |
Lachlan McIlroy | 0ec5851 | 2008-06-23 13:23:01 +1000 | [diff] [blame] | 768 | .setxattr = generic_setxattr, |
| 769 | .getxattr = generic_getxattr, |
| 770 | .removexattr = generic_removexattr, |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 771 | .listxattr = xfs_vn_listxattr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | }; |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 773 | |
| 774 | STATIC void |
| 775 | xfs_diflags_to_iflags( |
| 776 | struct inode *inode, |
| 777 | struct xfs_inode *ip) |
| 778 | { |
| 779 | if (ip->i_d.di_flags & XFS_DIFLAG_IMMUTABLE) |
| 780 | inode->i_flags |= S_IMMUTABLE; |
| 781 | else |
| 782 | inode->i_flags &= ~S_IMMUTABLE; |
| 783 | if (ip->i_d.di_flags & XFS_DIFLAG_APPEND) |
| 784 | inode->i_flags |= S_APPEND; |
| 785 | else |
| 786 | inode->i_flags &= ~S_APPEND; |
| 787 | if (ip->i_d.di_flags & XFS_DIFLAG_SYNC) |
| 788 | inode->i_flags |= S_SYNC; |
| 789 | else |
| 790 | inode->i_flags &= ~S_SYNC; |
| 791 | if (ip->i_d.di_flags & XFS_DIFLAG_NOATIME) |
| 792 | inode->i_flags |= S_NOATIME; |
| 793 | else |
| 794 | inode->i_flags &= ~S_NOATIME; |
| 795 | } |
| 796 | |
| 797 | /* |
| 798 | * Initialize the Linux inode, set up the operation vectors and |
| 799 | * unlock the inode. |
| 800 | * |
| 801 | * When reading existing inodes from disk this is called directly |
| 802 | * from xfs_iget, when creating a new inode it is called from |
| 803 | * xfs_ialloc after setting up the inode. |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 804 | * |
| 805 | * We are always called with an uninitialised linux inode here. |
| 806 | * We need to initialise the necessary fields and take a reference |
| 807 | * on it. |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 808 | */ |
| 809 | void |
| 810 | xfs_setup_inode( |
| 811 | struct xfs_inode *ip) |
| 812 | { |
David Chinner | bf90424 | 2008-10-30 17:36:14 +1100 | [diff] [blame] | 813 | struct inode *inode = &ip->i_vnode; |
| 814 | |
| 815 | inode->i_ino = ip->i_ino; |
| 816 | inode->i_state = I_NEW|I_LOCK; |
| 817 | inode_add_to_lists(ip->i_mount->m_super, inode); |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 818 | |
| 819 | inode->i_mode = ip->i_d.di_mode; |
| 820 | inode->i_nlink = ip->i_d.di_nlink; |
| 821 | inode->i_uid = ip->i_d.di_uid; |
| 822 | inode->i_gid = ip->i_d.di_gid; |
| 823 | |
| 824 | switch (inode->i_mode & S_IFMT) { |
| 825 | case S_IFBLK: |
| 826 | case S_IFCHR: |
| 827 | inode->i_rdev = |
| 828 | MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff, |
| 829 | sysv_minor(ip->i_df.if_u2.if_rdev)); |
| 830 | break; |
| 831 | default: |
| 832 | inode->i_rdev = 0; |
| 833 | break; |
| 834 | } |
| 835 | |
| 836 | inode->i_generation = ip->i_d.di_gen; |
| 837 | i_size_write(inode, ip->i_d.di_size); |
| 838 | inode->i_atime.tv_sec = ip->i_d.di_atime.t_sec; |
| 839 | inode->i_atime.tv_nsec = ip->i_d.di_atime.t_nsec; |
| 840 | inode->i_mtime.tv_sec = ip->i_d.di_mtime.t_sec; |
| 841 | inode->i_mtime.tv_nsec = ip->i_d.di_mtime.t_nsec; |
| 842 | inode->i_ctime.tv_sec = ip->i_d.di_ctime.t_sec; |
| 843 | inode->i_ctime.tv_nsec = ip->i_d.di_ctime.t_nsec; |
| 844 | xfs_diflags_to_iflags(inode, ip); |
Christoph Hellwig | 41be8be | 2008-08-13 16:23:13 +1000 | [diff] [blame] | 845 | |
| 846 | switch (inode->i_mode & S_IFMT) { |
| 847 | case S_IFREG: |
| 848 | inode->i_op = &xfs_inode_operations; |
| 849 | inode->i_fop = &xfs_file_operations; |
| 850 | inode->i_mapping->a_ops = &xfs_address_space_operations; |
| 851 | break; |
| 852 | case S_IFDIR: |
| 853 | if (xfs_sb_version_hasasciici(&XFS_M(inode->i_sb)->m_sb)) |
| 854 | inode->i_op = &xfs_dir_ci_inode_operations; |
| 855 | else |
| 856 | inode->i_op = &xfs_dir_inode_operations; |
| 857 | inode->i_fop = &xfs_dir_file_operations; |
| 858 | break; |
| 859 | case S_IFLNK: |
| 860 | inode->i_op = &xfs_symlink_inode_operations; |
| 861 | if (!(ip->i_df.if_flags & XFS_IFINLINE)) |
| 862 | inode->i_mapping->a_ops = &xfs_address_space_operations; |
| 863 | break; |
| 864 | default: |
| 865 | inode->i_op = &xfs_inode_operations; |
| 866 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
| 867 | break; |
| 868 | } |
| 869 | |
| 870 | xfs_iflags_clear(ip, XFS_INEW); |
| 871 | barrier(); |
| 872 | |
| 873 | unlock_new_inode(inode); |
| 874 | } |