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" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 20 | #include "xfs_bit.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" |
| 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_alloc.h" |
| 28 | #include "xfs_dmapi.h" |
| 29 | #include "xfs_quota.h" |
| 30 | #include "xfs_mount.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include "xfs_bmap_btree.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 32 | #include "xfs_alloc_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include "xfs_ialloc_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include "xfs_dir2_sf.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 35 | #include "xfs_attr_sf.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include "xfs_dinode.h" |
| 37 | #include "xfs_inode.h" |
| 38 | #include "xfs_bmap.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 39 | #include "xfs_btree.h" |
| 40 | #include "xfs_ialloc.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include "xfs_rtalloc.h" |
| 42 | #include "xfs_error.h" |
| 43 | #include "xfs_itable.h" |
| 44 | #include "xfs_rw.h" |
| 45 | #include "xfs_acl.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include "xfs_attr.h" |
| 47 | #include "xfs_buf_item.h" |
| 48 | #include "xfs_utils.h" |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 49 | #include "xfs_vnodeops.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
Randy Dunlap | 16f7e0f | 2006-01-11 12:17:46 -0800 | [diff] [blame] | 51 | #include <linux/capability.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #include <linux/xattr.h> |
| 53 | #include <linux/namei.h> |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 54 | #include <linux/security.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 56 | /* |
Christoph Hellwig | 42fe2b1 | 2006-01-11 15:35:17 +1100 | [diff] [blame] | 57 | * Bring the atime in the XFS inode uptodate. |
| 58 | * Used before logging the inode to disk or when the Linux inode goes away. |
| 59 | */ |
| 60 | void |
| 61 | xfs_synchronize_atime( |
| 62 | xfs_inode_t *ip) |
| 63 | { |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 64 | bhv_vnode_t *vp; |
Christoph Hellwig | 42fe2b1 | 2006-01-11 15:35:17 +1100 | [diff] [blame] | 65 | |
| 66 | vp = XFS_ITOV_NULL(ip); |
| 67 | if (vp) { |
Christoph Hellwig | 0a74cd1 | 2007-08-29 11:53:12 +1000 | [diff] [blame] | 68 | ip->i_d.di_atime.t_sec = (__int32_t)vp->i_atime.tv_sec; |
| 69 | ip->i_d.di_atime.t_nsec = (__int32_t)vp->i_atime.tv_nsec; |
Christoph Hellwig | 42fe2b1 | 2006-01-11 15:35:17 +1100 | [diff] [blame] | 70 | } |
| 71 | } |
| 72 | |
| 73 | /* |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 74 | * Change the requested timestamp in the given inode. |
| 75 | * We don't lock across timestamp updates, and we don't log them but |
| 76 | * we do record the fact that there is dirty information in core. |
| 77 | * |
| 78 | * NOTE -- callers MUST combine XFS_ICHGTIME_MOD or XFS_ICHGTIME_CHG |
| 79 | * with XFS_ICHGTIME_ACC to be sure that access time |
| 80 | * update will take. Calling first with XFS_ICHGTIME_ACC |
| 81 | * and then XFS_ICHGTIME_MOD may fail to modify the access |
| 82 | * timestamp if the filesystem is mounted noacctm. |
| 83 | */ |
| 84 | void |
| 85 | xfs_ichgtime( |
| 86 | xfs_inode_t *ip, |
| 87 | int flags) |
| 88 | { |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 89 | struct inode *inode = vn_to_inode(XFS_ITOV(ip)); |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 90 | timespec_t tv; |
| 91 | |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 92 | nanotime(&tv); |
| 93 | if (flags & XFS_ICHGTIME_MOD) { |
| 94 | inode->i_mtime = tv; |
| 95 | ip->i_d.di_mtime.t_sec = (__int32_t)tv.tv_sec; |
| 96 | ip->i_d.di_mtime.t_nsec = (__int32_t)tv.tv_nsec; |
| 97 | } |
| 98 | if (flags & XFS_ICHGTIME_ACC) { |
| 99 | inode->i_atime = tv; |
| 100 | ip->i_d.di_atime.t_sec = (__int32_t)tv.tv_sec; |
| 101 | ip->i_d.di_atime.t_nsec = (__int32_t)tv.tv_nsec; |
| 102 | } |
| 103 | if (flags & XFS_ICHGTIME_CHG) { |
| 104 | inode->i_ctime = tv; |
| 105 | ip->i_d.di_ctime.t_sec = (__int32_t)tv.tv_sec; |
| 106 | ip->i_d.di_ctime.t_nsec = (__int32_t)tv.tv_nsec; |
| 107 | } |
| 108 | |
| 109 | /* |
| 110 | * We update the i_update_core field _after_ changing |
| 111 | * the timestamps in order to coordinate properly with |
| 112 | * xfs_iflush() so that we don't lose timestamp updates. |
| 113 | * This keeps us from having to hold the inode lock |
| 114 | * while doing this. We use the SYNCHRONIZE macro to |
| 115 | * ensure that the compiler does not reorder the update |
| 116 | * of i_update_core above the timestamp updates above. |
| 117 | */ |
| 118 | SYNCHRONIZE(); |
| 119 | ip->i_update_core = 1; |
| 120 | if (!(inode->i_state & I_LOCK)) |
| 121 | mark_inode_dirty_sync(inode); |
| 122 | } |
| 123 | |
| 124 | /* |
| 125 | * Variant on the above which avoids querying the system clock |
| 126 | * in situations where we know the Linux inode timestamps have |
| 127 | * just been updated (and so we can update our inode cheaply). |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 128 | */ |
| 129 | void |
| 130 | xfs_ichgtime_fast( |
| 131 | xfs_inode_t *ip, |
| 132 | struct inode *inode, |
| 133 | int flags) |
| 134 | { |
| 135 | timespec_t *tvp; |
| 136 | |
| 137 | /* |
Christoph Hellwig | 42fe2b1 | 2006-01-11 15:35:17 +1100 | [diff] [blame] | 138 | * Atime updates for read() & friends are handled lazily now, and |
| 139 | * explicit updates must go through xfs_ichgtime() |
| 140 | */ |
| 141 | ASSERT((flags & XFS_ICHGTIME_ACC) == 0); |
| 142 | |
| 143 | /* |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 144 | * We're not supposed to change timestamps in readonly-mounted |
| 145 | * filesystems. Throw it away if anyone asks us. |
| 146 | */ |
| 147 | if (unlikely(IS_RDONLY(inode))) |
| 148 | return; |
| 149 | |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 150 | if (flags & XFS_ICHGTIME_MOD) { |
| 151 | tvp = &inode->i_mtime; |
| 152 | ip->i_d.di_mtime.t_sec = (__int32_t)tvp->tv_sec; |
| 153 | ip->i_d.di_mtime.t_nsec = (__int32_t)tvp->tv_nsec; |
| 154 | } |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 155 | if (flags & XFS_ICHGTIME_CHG) { |
| 156 | tvp = &inode->i_ctime; |
| 157 | ip->i_d.di_ctime.t_sec = (__int32_t)tvp->tv_sec; |
| 158 | ip->i_d.di_ctime.t_nsec = (__int32_t)tvp->tv_nsec; |
| 159 | } |
| 160 | |
| 161 | /* |
| 162 | * We update the i_update_core field _after_ changing |
| 163 | * the timestamps in order to coordinate properly with |
| 164 | * xfs_iflush() so that we don't lose timestamp updates. |
| 165 | * This keeps us from having to hold the inode lock |
| 166 | * while doing this. We use the SYNCHRONIZE macro to |
| 167 | * ensure that the compiler does not reorder the update |
| 168 | * of i_update_core above the timestamp updates above. |
| 169 | */ |
| 170 | SYNCHRONIZE(); |
| 171 | ip->i_update_core = 1; |
| 172 | if (!(inode->i_state & I_LOCK)) |
| 173 | mark_inode_dirty_sync(inode); |
| 174 | } |
| 175 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
| 177 | /* |
| 178 | * Pull the link count and size up from the xfs inode to the linux inode |
| 179 | */ |
| 180 | STATIC void |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 181 | xfs_validate_fields( |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 182 | struct inode *ip, |
Nathan Scott | 8285fb5 | 2006-06-09 17:07:12 +1000 | [diff] [blame] | 183 | bhv_vattr_t *vattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | { |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 185 | vattr->va_mask = XFS_AT_NLINK|XFS_AT_SIZE|XFS_AT_NBLOCKS; |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 186 | if (!xfs_getattr(XFS_I(ip), vattr, ATTR_LAZY)) { |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 187 | ip->i_nlink = vattr->va_nlink; |
| 188 | ip->i_blocks = vattr->va_nblocks; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 190 | /* we're under i_sem so i_size can't change under us */ |
| 191 | if (i_size_read(ip) != vattr->va_size) |
| 192 | i_size_write(ip, vattr->va_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | } |
| 194 | } |
| 195 | |
| 196 | /* |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 197 | * Hook in SELinux. This is not quite correct yet, what we really need |
| 198 | * here (as we do for default ACLs) is a mechanism by which creation of |
| 199 | * these attrs can be journalled at inode creation time (along with the |
| 200 | * inode, of course, such that log replay can't cause these to be lost). |
| 201 | */ |
| 202 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 203 | xfs_init_security( |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 204 | bhv_vnode_t *vp, |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 205 | struct inode *dir) |
| 206 | { |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 207 | struct inode *ip = vn_to_inode(vp); |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 208 | size_t length; |
| 209 | void *value; |
| 210 | char *name; |
| 211 | int error; |
| 212 | |
| 213 | error = security_inode_init_security(ip, dir, &name, &value, &length); |
| 214 | if (error) { |
| 215 | if (error == -EOPNOTSUPP) |
| 216 | return 0; |
| 217 | return -error; |
| 218 | } |
| 219 | |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 220 | error = xfs_attr_set(XFS_I(ip), name, value, |
| 221 | length, ATTR_SECURE); |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 222 | if (!error) |
Christoph Hellwig | b3aea4e | 2007-08-29 11:44:37 +1000 | [diff] [blame] | 223 | xfs_iflags_set(XFS_I(ip), XFS_IMODIFIED); |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 224 | |
| 225 | kfree(name); |
| 226 | kfree(value); |
| 227 | return error; |
| 228 | } |
| 229 | |
| 230 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | * Determine whether a process has a valid fs_struct (kernel daemons |
| 232 | * like knfsd don't have an fs_struct). |
| 233 | * |
| 234 | * XXX(hch): nfsd is broken, better fix it instead. |
| 235 | */ |
David Chinner | 7989cb8 | 2007-02-10 18:34:56 +1100 | [diff] [blame] | 236 | STATIC_INLINE int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 237 | xfs_has_fs_struct(struct task_struct *task) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | { |
| 239 | return (task->fs != init_task.fs); |
| 240 | } |
| 241 | |
David Chinner | 7989cb8 | 2007-02-10 18:34:56 +1100 | [diff] [blame] | 242 | STATIC void |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 243 | xfs_cleanup_inode( |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 244 | struct inode *dir, |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 245 | bhv_vnode_t *vp, |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 246 | struct dentry *dentry, |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 247 | int mode) |
| 248 | { |
| 249 | struct dentry teardown = {}; |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 250 | |
| 251 | /* Oh, the horror. |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 252 | * If we can't add the ACL or we fail in |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 253 | * xfs_init_security we must back out. |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 254 | * ENOSPC can hit here, among other things. |
| 255 | */ |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 256 | teardown.d_inode = vn_to_inode(vp); |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 257 | teardown.d_name = dentry->d_name; |
| 258 | |
| 259 | if (S_ISDIR(mode)) |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 260 | xfs_rmdir(XFS_I(dir), &teardown); |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 261 | else |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 262 | xfs_remove(XFS_I(dir), &teardown); |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 263 | VN_RELE(vp); |
| 264 | } |
| 265 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 267 | xfs_vn_mknod( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | struct inode *dir, |
| 269 | struct dentry *dentry, |
| 270 | int mode, |
| 271 | dev_t rdev) |
| 272 | { |
| 273 | struct inode *ip; |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 274 | bhv_vnode_t *vp = NULL, *dvp = vn_from_inode(dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | xfs_acl_t *default_acl = NULL; |
| 276 | attrexists_t test_default_acl = _ACL_DEFAULT_EXISTS; |
| 277 | int error; |
| 278 | |
| 279 | /* |
| 280 | * Irix uses Missed'em'V split, but doesn't want to see |
| 281 | * the upper 5 bits of (14bit) major. |
| 282 | */ |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 283 | if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | return -EINVAL; |
| 285 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 286 | if (unlikely(test_default_acl && test_default_acl(dvp))) { |
| 287 | if (!_ACL_ALLOC(default_acl)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | return -ENOMEM; |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 289 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | if (!_ACL_GET_DEFAULT(dvp, default_acl)) { |
| 291 | _ACL_FREE(default_acl); |
| 292 | default_acl = NULL; |
| 293 | } |
| 294 | } |
| 295 | |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 296 | if (IS_POSIXACL(dir) && !default_acl && xfs_has_fs_struct(current)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | mode &= ~current->fs->umask; |
| 298 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | switch (mode & S_IFMT) { |
| 300 | case S_IFCHR: case S_IFBLK: case S_IFIFO: case S_IFSOCK: |
Christoph Hellwig | 3e5daf0 | 2007-10-11 18:09:12 +1000 | [diff] [blame^] | 301 | rdev = sysv_encode_dev(rdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | case S_IFREG: |
Christoph Hellwig | 3e5daf0 | 2007-10-11 18:09:12 +1000 | [diff] [blame^] | 303 | error = xfs_create(XFS_I(dir), dentry, mode, rdev, &vp, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | break; |
| 305 | case S_IFDIR: |
Christoph Hellwig | 3e5daf0 | 2007-10-11 18:09:12 +1000 | [diff] [blame^] | 306 | error = xfs_mkdir(XFS_I(dir), dentry, mode, &vp, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | break; |
| 308 | default: |
| 309 | error = EINVAL; |
| 310 | break; |
| 311 | } |
| 312 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 313 | if (unlikely(!error)) { |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 314 | error = xfs_init_security(vp, dir); |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 315 | if (error) |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 316 | xfs_cleanup_inode(dir, vp, dentry, mode); |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 317 | } |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 318 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 319 | if (unlikely(default_acl)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | if (!error) { |
Christoph Hellwig | 3e5daf0 | 2007-10-11 18:09:12 +1000 | [diff] [blame^] | 321 | error = _ACL_INHERIT(vp, mode, default_acl); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 322 | if (!error) |
Christoph Hellwig | 0a74cd1 | 2007-08-29 11:53:12 +1000 | [diff] [blame] | 323 | xfs_iflags_set(XFS_I(vp), XFS_IMODIFIED); |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 324 | else |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 325 | xfs_cleanup_inode(dir, vp, dentry, mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | } |
| 327 | _ACL_FREE(default_acl); |
| 328 | } |
| 329 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 330 | if (likely(!error)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | ASSERT(vp); |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 332 | ip = vn_to_inode(vp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | |
| 334 | if (S_ISCHR(mode) || S_ISBLK(mode)) |
| 335 | ip->i_rdev = rdev; |
| 336 | else if (S_ISDIR(mode)) |
Nathan Scott | 524fbf5 | 2006-03-14 14:07:53 +1100 | [diff] [blame] | 337 | xfs_validate_fields(ip, &vattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | d_instantiate(dentry, ip); |
Nathan Scott | 524fbf5 | 2006-03-14 14:07:53 +1100 | [diff] [blame] | 339 | xfs_validate_fields(dir, &vattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | } |
| 341 | return -error; |
| 342 | } |
| 343 | |
| 344 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 345 | xfs_vn_create( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | struct inode *dir, |
| 347 | struct dentry *dentry, |
| 348 | int mode, |
| 349 | struct nameidata *nd) |
| 350 | { |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 351 | return xfs_vn_mknod(dir, dentry, mode, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | } |
| 353 | |
| 354 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 355 | xfs_vn_mkdir( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | struct inode *dir, |
| 357 | struct dentry *dentry, |
| 358 | int mode) |
| 359 | { |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 360 | return xfs_vn_mknod(dir, dentry, mode|S_IFDIR, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | } |
| 362 | |
| 363 | STATIC struct dentry * |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 364 | xfs_vn_lookup( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | struct inode *dir, |
| 366 | struct dentry *dentry, |
| 367 | struct nameidata *nd) |
| 368 | { |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 369 | bhv_vnode_t *cvp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | int error; |
| 371 | |
| 372 | if (dentry->d_name.len >= MAXNAMELEN) |
| 373 | return ERR_PTR(-ENAMETOOLONG); |
| 374 | |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 375 | error = xfs_lookup(XFS_I(dir), dentry, &cvp); |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 376 | if (unlikely(error)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | if (unlikely(error != ENOENT)) |
| 378 | return ERR_PTR(-error); |
| 379 | d_add(dentry, NULL); |
| 380 | return NULL; |
| 381 | } |
| 382 | |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 383 | return d_splice_alias(vn_to_inode(cvp), dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | } |
| 385 | |
| 386 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 387 | xfs_vn_link( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | struct dentry *old_dentry, |
| 389 | struct inode *dir, |
| 390 | struct dentry *dentry) |
| 391 | { |
| 392 | struct inode *ip; /* inode of guy being linked to */ |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 393 | bhv_vnode_t *vp; /* vp of name being linked */ |
Nathan Scott | 8285fb5 | 2006-06-09 17:07:12 +1000 | [diff] [blame] | 394 | bhv_vattr_t vattr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | int error; |
| 396 | |
| 397 | ip = old_dentry->d_inode; /* inode being linked to */ |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 398 | vp = vn_from_inode(ip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | |
Nathan Scott | 97dfd70 | 2006-06-27 16:13:46 +1000 | [diff] [blame] | 400 | VN_HOLD(vp); |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 401 | error = xfs_link(XFS_I(dir), vp, dentry); |
Nathan Scott | 97dfd70 | 2006-06-27 16:13:46 +1000 | [diff] [blame] | 402 | if (unlikely(error)) { |
| 403 | VN_RELE(vp); |
| 404 | } else { |
Christoph Hellwig | b3aea4e | 2007-08-29 11:44:37 +1000 | [diff] [blame] | 405 | xfs_iflags_set(XFS_I(dir), XFS_IMODIFIED); |
Nathan Scott | 524fbf5 | 2006-03-14 14:07:53 +1100 | [diff] [blame] | 406 | xfs_validate_fields(ip, &vattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | d_instantiate(dentry, ip); |
| 408 | } |
| 409 | return -error; |
| 410 | } |
| 411 | |
| 412 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 413 | xfs_vn_unlink( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | struct inode *dir, |
| 415 | struct dentry *dentry) |
| 416 | { |
| 417 | struct inode *inode; |
Nathan Scott | 8285fb5 | 2006-06-09 17:07:12 +1000 | [diff] [blame] | 418 | bhv_vattr_t vattr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | int error; |
| 420 | |
| 421 | inode = dentry->d_inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 423 | error = xfs_remove(XFS_I(dir), dentry); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 424 | if (likely(!error)) { |
Nathan Scott | 524fbf5 | 2006-03-14 14:07:53 +1100 | [diff] [blame] | 425 | xfs_validate_fields(dir, &vattr); /* size needs update */ |
| 426 | xfs_validate_fields(inode, &vattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | return -error; |
| 429 | } |
| 430 | |
| 431 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 432 | xfs_vn_symlink( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | struct inode *dir, |
| 434 | struct dentry *dentry, |
| 435 | const char *symname) |
| 436 | { |
| 437 | struct inode *ip; |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 438 | bhv_vnode_t *cvp; /* used to lookup symlink to put in dentry */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | int error; |
Christoph Hellwig | 3e5daf0 | 2007-10-11 18:09:12 +1000 | [diff] [blame^] | 440 | mode_t mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | cvp = NULL; |
| 443 | |
Christoph Hellwig | 3e5daf0 | 2007-10-11 18:09:12 +1000 | [diff] [blame^] | 444 | mode = S_IFLNK | |
Christoph Hellwig | 0432dab | 2005-09-02 16:46:51 +1000 | [diff] [blame] | 445 | (irix_symlink_mode ? 0777 & ~current->fs->umask : S_IRWXUGO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | |
Christoph Hellwig | 3e5daf0 | 2007-10-11 18:09:12 +1000 | [diff] [blame^] | 447 | error = xfs_symlink(XFS_I(dir), dentry, (char *)symname, mode, |
| 448 | &cvp, NULL); |
Nathan Scott | 5424570 | 2006-01-16 15:54:05 +1100 | [diff] [blame] | 449 | if (likely(!error && cvp)) { |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 450 | error = xfs_init_security(cvp, dir); |
Nathan Scott | 5424570 | 2006-01-16 15:54:05 +1100 | [diff] [blame] | 451 | if (likely(!error)) { |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 452 | ip = vn_to_inode(cvp); |
Nathan Scott | 5424570 | 2006-01-16 15:54:05 +1100 | [diff] [blame] | 453 | d_instantiate(dentry, ip); |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 454 | xfs_validate_fields(dir, &va); |
| 455 | xfs_validate_fields(ip, &va); |
Nathan Scott | ce9d37c | 2006-03-17 17:26:34 +1100 | [diff] [blame] | 456 | } else { |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 457 | xfs_cleanup_inode(dir, cvp, dentry, 0); |
Nathan Scott | 5424570 | 2006-01-16 15:54:05 +1100 | [diff] [blame] | 458 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | } |
| 460 | return -error; |
| 461 | } |
| 462 | |
| 463 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 464 | xfs_vn_rmdir( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | struct inode *dir, |
| 466 | struct dentry *dentry) |
| 467 | { |
| 468 | struct inode *inode = dentry->d_inode; |
Nathan Scott | 8285fb5 | 2006-06-09 17:07:12 +1000 | [diff] [blame] | 469 | bhv_vattr_t vattr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | int error; |
| 471 | |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 472 | error = xfs_rmdir(XFS_I(dir), dentry); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 473 | if (likely(!error)) { |
Nathan Scott | 524fbf5 | 2006-03-14 14:07:53 +1100 | [diff] [blame] | 474 | xfs_validate_fields(inode, &vattr); |
| 475 | xfs_validate_fields(dir, &vattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | } |
| 477 | return -error; |
| 478 | } |
| 479 | |
| 480 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 481 | xfs_vn_rename( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | struct inode *odir, |
| 483 | struct dentry *odentry, |
| 484 | struct inode *ndir, |
| 485 | struct dentry *ndentry) |
| 486 | { |
| 487 | struct inode *new_inode = ndentry->d_inode; |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 488 | bhv_vnode_t *tvp; /* target directory */ |
Nathan Scott | 8285fb5 | 2006-06-09 17:07:12 +1000 | [diff] [blame] | 489 | bhv_vattr_t vattr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | int error; |
| 491 | |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 492 | tvp = vn_from_inode(ndir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 494 | error = xfs_rename(XFS_I(odir), odentry, tvp, ndentry); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 495 | if (likely(!error)) { |
| 496 | if (new_inode) |
Nathan Scott | 524fbf5 | 2006-03-14 14:07:53 +1100 | [diff] [blame] | 497 | xfs_validate_fields(new_inode, &vattr); |
| 498 | xfs_validate_fields(odir, &vattr); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 499 | if (ndir != odir) |
Nathan Scott | 524fbf5 | 2006-03-14 14:07:53 +1100 | [diff] [blame] | 500 | xfs_validate_fields(ndir, &vattr); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 501 | } |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 502 | return -error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | } |
| 504 | |
| 505 | /* |
| 506 | * careful here - this function can get called recursively, so |
| 507 | * we need to be very careful about how much stack we use. |
| 508 | * uio is kmalloced for this reason... |
| 509 | */ |
Al Viro | 008b150 | 2005-08-20 00:17:39 +0100 | [diff] [blame] | 510 | STATIC void * |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 511 | xfs_vn_follow_link( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | struct dentry *dentry, |
| 513 | struct nameidata *nd) |
| 514 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | char *link; |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 516 | int error = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | |
Panagiotis Issaris | f52720c | 2006-09-27 01:49:39 -0700 | [diff] [blame] | 518 | link = kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 519 | if (!link) |
| 520 | goto out_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 522 | error = -xfs_readlink(XFS_I(dentry->d_inode), link); |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 523 | if (unlikely(error)) |
| 524 | goto out_kfree; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | |
| 526 | nd_set_link(nd, link); |
Al Viro | 008b150 | 2005-08-20 00:17:39 +0100 | [diff] [blame] | 527 | return NULL; |
Christoph Hellwig | 804c83c | 2007-08-28 13:59:03 +1000 | [diff] [blame] | 528 | |
| 529 | out_kfree: |
| 530 | kfree(link); |
| 531 | out_err: |
| 532 | nd_set_link(nd, ERR_PTR(error)); |
| 533 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | } |
| 535 | |
Nathan Scott | cde410a | 2005-09-05 11:47:01 +1000 | [diff] [blame] | 536 | STATIC void |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 537 | xfs_vn_put_link( |
Nathan Scott | cde410a | 2005-09-05 11:47:01 +1000 | [diff] [blame] | 538 | struct dentry *dentry, |
| 539 | struct nameidata *nd, |
| 540 | void *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | { |
Nathan Scott | cde410a | 2005-09-05 11:47:01 +1000 | [diff] [blame] | 542 | char *s = nd_get_link(nd); |
| 543 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | if (!IS_ERR(s)) |
| 545 | kfree(s); |
| 546 | } |
| 547 | |
| 548 | #ifdef CONFIG_XFS_POSIX_ACL |
| 549 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 550 | xfs_vn_permission( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | struct inode *inode, |
| 552 | int mode, |
| 553 | struct nameidata *nd) |
| 554 | { |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 555 | return -xfs_access(XFS_I(inode), mode << 6, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | } |
| 557 | #else |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 558 | #define xfs_vn_permission NULL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | #endif |
| 560 | |
| 561 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 562 | xfs_vn_getattr( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | struct vfsmount *mnt, |
| 564 | struct dentry *dentry, |
| 565 | struct kstat *stat) |
| 566 | { |
| 567 | struct inode *inode = dentry->d_inode; |
Nathan Scott | 69e23b9 | 2006-09-28 11:01:22 +1000 | [diff] [blame] | 568 | bhv_vattr_t vattr = { .va_mask = XFS_AT_STAT }; |
| 569 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 571 | error = xfs_getattr(XFS_I(inode), &vattr, ATTR_LAZY); |
Nathan Scott | 69e23b9 | 2006-09-28 11:01:22 +1000 | [diff] [blame] | 572 | if (likely(!error)) { |
| 573 | stat->size = i_size_read(inode); |
| 574 | stat->dev = inode->i_sb->s_dev; |
| 575 | stat->rdev = (vattr.va_rdev == 0) ? 0 : |
| 576 | MKDEV(sysv_major(vattr.va_rdev) & 0x1ff, |
| 577 | sysv_minor(vattr.va_rdev)); |
| 578 | stat->mode = vattr.va_mode; |
| 579 | stat->nlink = vattr.va_nlink; |
| 580 | stat->uid = vattr.va_uid; |
| 581 | stat->gid = vattr.va_gid; |
| 582 | stat->ino = vattr.va_nodeid; |
| 583 | stat->atime = vattr.va_atime; |
| 584 | stat->mtime = vattr.va_mtime; |
| 585 | stat->ctime = vattr.va_ctime; |
| 586 | stat->blocks = vattr.va_nblocks; |
| 587 | stat->blksize = vattr.va_blocksize; |
| 588 | } |
Nathan Scott | b76963f | 2006-06-09 14:58:20 +1000 | [diff] [blame] | 589 | return -error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | } |
| 591 | |
| 592 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 593 | xfs_vn_setattr( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | struct dentry *dentry, |
| 595 | struct iattr *attr) |
| 596 | { |
| 597 | struct inode *inode = dentry->d_inode; |
| 598 | unsigned int ia_valid = attr->ia_valid; |
Nathan Scott | 8285fb5 | 2006-06-09 17:07:12 +1000 | [diff] [blame] | 599 | bhv_vattr_t vattr = { 0 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | int flags = 0; |
| 601 | int error; |
| 602 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | if (ia_valid & ATTR_UID) { |
| 604 | vattr.va_mask |= XFS_AT_UID; |
| 605 | vattr.va_uid = attr->ia_uid; |
| 606 | } |
| 607 | if (ia_valid & ATTR_GID) { |
| 608 | vattr.va_mask |= XFS_AT_GID; |
| 609 | vattr.va_gid = attr->ia_gid; |
| 610 | } |
| 611 | if (ia_valid & ATTR_SIZE) { |
| 612 | vattr.va_mask |= XFS_AT_SIZE; |
| 613 | vattr.va_size = attr->ia_size; |
| 614 | } |
| 615 | if (ia_valid & ATTR_ATIME) { |
| 616 | vattr.va_mask |= XFS_AT_ATIME; |
| 617 | vattr.va_atime = attr->ia_atime; |
Nathan Scott | 8c0b511 | 2006-04-11 15:12:45 +1000 | [diff] [blame] | 618 | inode->i_atime = attr->ia_atime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | } |
| 620 | if (ia_valid & ATTR_MTIME) { |
| 621 | vattr.va_mask |= XFS_AT_MTIME; |
| 622 | vattr.va_mtime = attr->ia_mtime; |
| 623 | } |
| 624 | if (ia_valid & ATTR_CTIME) { |
| 625 | vattr.va_mask |= XFS_AT_CTIME; |
| 626 | vattr.va_ctime = attr->ia_ctime; |
| 627 | } |
| 628 | if (ia_valid & ATTR_MODE) { |
| 629 | vattr.va_mask |= XFS_AT_MODE; |
| 630 | vattr.va_mode = attr->ia_mode; |
| 631 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) |
| 632 | inode->i_mode &= ~S_ISGID; |
| 633 | } |
| 634 | |
| 635 | if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) |
| 636 | flags |= ATTR_UTIME; |
| 637 | #ifdef ATTR_NO_BLOCK |
| 638 | if ((ia_valid & ATTR_NO_BLOCK)) |
| 639 | flags |= ATTR_NONBLOCK; |
| 640 | #endif |
| 641 | |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 642 | error = xfs_setattr(XFS_I(inode), &vattr, flags, NULL); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 643 | if (likely(!error)) |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 644 | __vn_revalidate(vn_from_inode(inode), &vattr); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame] | 645 | return -error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | } |
| 647 | |
| 648 | STATIC void |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 649 | xfs_vn_truncate( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | struct inode *inode) |
| 651 | { |
Nathan Scott | c253666 | 2006-03-29 10:44:40 +1000 | [diff] [blame] | 652 | block_truncate_page(inode->i_mapping, inode->i_size, xfs_get_blocks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | } |
| 654 | |
| 655 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 656 | xfs_vn_setxattr( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | struct dentry *dentry, |
| 658 | const char *name, |
| 659 | const void *data, |
| 660 | size_t size, |
| 661 | int flags) |
| 662 | { |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 663 | bhv_vnode_t *vp = vn_from_inode(dentry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | char *attr = (char *)name; |
| 665 | attrnames_t *namesp; |
| 666 | int xflags = 0; |
| 667 | int error; |
| 668 | |
| 669 | namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT); |
| 670 | if (!namesp) |
| 671 | return -EOPNOTSUPP; |
| 672 | attr += namesp->attr_namelen; |
| 673 | error = namesp->attr_capable(vp, NULL); |
| 674 | if (error) |
| 675 | return error; |
| 676 | |
| 677 | /* Convert Linux syscall to XFS internal ATTR flags */ |
| 678 | if (flags & XATTR_CREATE) |
| 679 | xflags |= ATTR_CREATE; |
| 680 | if (flags & XATTR_REPLACE) |
| 681 | xflags |= ATTR_REPLACE; |
| 682 | xflags |= namesp->attr_flag; |
| 683 | return namesp->attr_set(vp, attr, (void *)data, size, xflags); |
| 684 | } |
| 685 | |
| 686 | STATIC ssize_t |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 687 | xfs_vn_getxattr( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | struct dentry *dentry, |
| 689 | const char *name, |
| 690 | void *data, |
| 691 | size_t size) |
| 692 | { |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 693 | bhv_vnode_t *vp = vn_from_inode(dentry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | char *attr = (char *)name; |
| 695 | attrnames_t *namesp; |
| 696 | int xflags = 0; |
| 697 | ssize_t error; |
| 698 | |
| 699 | namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT); |
| 700 | if (!namesp) |
| 701 | return -EOPNOTSUPP; |
| 702 | attr += namesp->attr_namelen; |
| 703 | error = namesp->attr_capable(vp, NULL); |
| 704 | if (error) |
| 705 | return error; |
| 706 | |
| 707 | /* Convert Linux syscall to XFS internal ATTR flags */ |
| 708 | if (!size) { |
| 709 | xflags |= ATTR_KERNOVAL; |
| 710 | data = NULL; |
| 711 | } |
| 712 | xflags |= namesp->attr_flag; |
| 713 | return namesp->attr_get(vp, attr, (void *)data, size, xflags); |
| 714 | } |
| 715 | |
| 716 | STATIC ssize_t |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 717 | xfs_vn_listxattr( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | struct dentry *dentry, |
| 719 | char *data, |
| 720 | size_t size) |
| 721 | { |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 722 | bhv_vnode_t *vp = vn_from_inode(dentry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | int error, xflags = ATTR_KERNAMELS; |
| 724 | ssize_t result; |
| 725 | |
| 726 | if (!size) |
| 727 | xflags |= ATTR_KERNOVAL; |
| 728 | xflags |= capable(CAP_SYS_ADMIN) ? ATTR_KERNFULLS : ATTR_KERNORMALS; |
| 729 | |
| 730 | error = attr_generic_list(vp, data, size, xflags, &result); |
| 731 | if (error < 0) |
| 732 | return error; |
| 733 | return result; |
| 734 | } |
| 735 | |
| 736 | STATIC int |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 737 | xfs_vn_removexattr( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | struct dentry *dentry, |
| 739 | const char *name) |
| 740 | { |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 741 | bhv_vnode_t *vp = vn_from_inode(dentry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | char *attr = (char *)name; |
| 743 | attrnames_t *namesp; |
| 744 | int xflags = 0; |
| 745 | int error; |
| 746 | |
| 747 | namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT); |
| 748 | if (!namesp) |
| 749 | return -EOPNOTSUPP; |
| 750 | attr += namesp->attr_namelen; |
| 751 | error = namesp->attr_capable(vp, NULL); |
| 752 | if (error) |
| 753 | return error; |
| 754 | xflags |= namesp->attr_flag; |
| 755 | return namesp->attr_remove(vp, attr, xflags); |
| 756 | } |
| 757 | |
| 758 | |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 759 | const struct inode_operations xfs_inode_operations = { |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 760 | .permission = xfs_vn_permission, |
| 761 | .truncate = xfs_vn_truncate, |
| 762 | .getattr = xfs_vn_getattr, |
| 763 | .setattr = xfs_vn_setattr, |
| 764 | .setxattr = xfs_vn_setxattr, |
| 765 | .getxattr = xfs_vn_getxattr, |
| 766 | .listxattr = xfs_vn_listxattr, |
| 767 | .removexattr = xfs_vn_removexattr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | }; |
| 769 | |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 770 | const struct inode_operations xfs_dir_inode_operations = { |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 771 | .create = xfs_vn_create, |
| 772 | .lookup = xfs_vn_lookup, |
| 773 | .link = xfs_vn_link, |
| 774 | .unlink = xfs_vn_unlink, |
| 775 | .symlink = xfs_vn_symlink, |
| 776 | .mkdir = xfs_vn_mkdir, |
| 777 | .rmdir = xfs_vn_rmdir, |
| 778 | .mknod = xfs_vn_mknod, |
| 779 | .rename = xfs_vn_rename, |
| 780 | .permission = xfs_vn_permission, |
| 781 | .getattr = xfs_vn_getattr, |
| 782 | .setattr = xfs_vn_setattr, |
| 783 | .setxattr = xfs_vn_setxattr, |
| 784 | .getxattr = xfs_vn_getxattr, |
| 785 | .listxattr = xfs_vn_listxattr, |
| 786 | .removexattr = xfs_vn_removexattr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | }; |
| 788 | |
Arjan van de Ven | c5ef1c4 | 2007-02-12 00:55:40 -0800 | [diff] [blame] | 789 | const struct inode_operations xfs_symlink_inode_operations = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | .readlink = generic_readlink, |
Nathan Scott | 416c6d5 | 2006-03-14 14:00:51 +1100 | [diff] [blame] | 791 | .follow_link = xfs_vn_follow_link, |
| 792 | .put_link = xfs_vn_put_link, |
| 793 | .permission = xfs_vn_permission, |
| 794 | .getattr = xfs_vn_getattr, |
| 795 | .setattr = xfs_vn_setattr, |
| 796 | .setxattr = xfs_vn_setxattr, |
| 797 | .getxattr = xfs_vn_getxattr, |
| 798 | .listxattr = xfs_vn_listxattr, |
| 799 | .removexattr = xfs_vn_removexattr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | }; |