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" |
| 26 | #include "xfs_dir.h" |
| 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_dir_sf.h" |
| 36 | #include "xfs_dir2_sf.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 37 | #include "xfs_attr_sf.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include "xfs_dinode.h" |
| 39 | #include "xfs_inode.h" |
| 40 | #include "xfs_bmap.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 41 | #include "xfs_btree.h" |
| 42 | #include "xfs_ialloc.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include "xfs_rtalloc.h" |
| 44 | #include "xfs_error.h" |
| 45 | #include "xfs_itable.h" |
| 46 | #include "xfs_rw.h" |
| 47 | #include "xfs_acl.h" |
| 48 | #include "xfs_cap.h" |
| 49 | #include "xfs_mac.h" |
| 50 | #include "xfs_attr.h" |
| 51 | #include "xfs_buf_item.h" |
| 52 | #include "xfs_utils.h" |
| 53 | |
Randy Dunlap | 16f7e0f | 2006-01-11 12:17:46 -0800 | [diff] [blame] | 54 | #include <linux/capability.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | #include <linux/xattr.h> |
| 56 | #include <linux/namei.h> |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 57 | #include <linux/security.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 59 | /* |
Christoph Hellwig | 75e17b3 | 2006-01-11 20:58:44 +1100 | [diff] [blame] | 60 | * Get a XFS inode from a given vnode. |
| 61 | */ |
| 62 | xfs_inode_t * |
| 63 | xfs_vtoi( |
| 64 | struct vnode *vp) |
| 65 | { |
| 66 | bhv_desc_t *bdp; |
| 67 | |
| 68 | bdp = bhv_lookup_range(VN_BHV_HEAD(vp), |
| 69 | VNODE_POSITION_XFS, VNODE_POSITION_XFS); |
| 70 | if (unlikely(bdp == NULL)) |
| 71 | return NULL; |
| 72 | return XFS_BHVTOI(bdp); |
| 73 | } |
| 74 | |
| 75 | /* |
Christoph Hellwig | 42fe2b1 | 2006-01-11 15:35:17 +1100 | [diff] [blame] | 76 | * Bring the atime in the XFS inode uptodate. |
| 77 | * Used before logging the inode to disk or when the Linux inode goes away. |
| 78 | */ |
| 79 | void |
| 80 | xfs_synchronize_atime( |
| 81 | xfs_inode_t *ip) |
| 82 | { |
| 83 | vnode_t *vp; |
| 84 | |
| 85 | vp = XFS_ITOV_NULL(ip); |
| 86 | if (vp) { |
| 87 | struct inode *inode = &vp->v_inode; |
| 88 | ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec; |
| 89 | ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec; |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | /* |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 94 | * Change the requested timestamp in the given inode. |
| 95 | * We don't lock across timestamp updates, and we don't log them but |
| 96 | * we do record the fact that there is dirty information in core. |
| 97 | * |
| 98 | * NOTE -- callers MUST combine XFS_ICHGTIME_MOD or XFS_ICHGTIME_CHG |
| 99 | * with XFS_ICHGTIME_ACC to be sure that access time |
| 100 | * update will take. Calling first with XFS_ICHGTIME_ACC |
| 101 | * and then XFS_ICHGTIME_MOD may fail to modify the access |
| 102 | * timestamp if the filesystem is mounted noacctm. |
| 103 | */ |
| 104 | void |
| 105 | xfs_ichgtime( |
| 106 | xfs_inode_t *ip, |
| 107 | int flags) |
| 108 | { |
| 109 | struct inode *inode = LINVFS_GET_IP(XFS_ITOV(ip)); |
| 110 | timespec_t tv; |
| 111 | |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 112 | nanotime(&tv); |
| 113 | if (flags & XFS_ICHGTIME_MOD) { |
| 114 | inode->i_mtime = tv; |
| 115 | ip->i_d.di_mtime.t_sec = (__int32_t)tv.tv_sec; |
| 116 | ip->i_d.di_mtime.t_nsec = (__int32_t)tv.tv_nsec; |
| 117 | } |
| 118 | if (flags & XFS_ICHGTIME_ACC) { |
| 119 | inode->i_atime = tv; |
| 120 | ip->i_d.di_atime.t_sec = (__int32_t)tv.tv_sec; |
| 121 | ip->i_d.di_atime.t_nsec = (__int32_t)tv.tv_nsec; |
| 122 | } |
| 123 | if (flags & XFS_ICHGTIME_CHG) { |
| 124 | inode->i_ctime = tv; |
| 125 | ip->i_d.di_ctime.t_sec = (__int32_t)tv.tv_sec; |
| 126 | ip->i_d.di_ctime.t_nsec = (__int32_t)tv.tv_nsec; |
| 127 | } |
| 128 | |
| 129 | /* |
| 130 | * We update the i_update_core field _after_ changing |
| 131 | * the timestamps in order to coordinate properly with |
| 132 | * xfs_iflush() so that we don't lose timestamp updates. |
| 133 | * This keeps us from having to hold the inode lock |
| 134 | * while doing this. We use the SYNCHRONIZE macro to |
| 135 | * ensure that the compiler does not reorder the update |
| 136 | * of i_update_core above the timestamp updates above. |
| 137 | */ |
| 138 | SYNCHRONIZE(); |
| 139 | ip->i_update_core = 1; |
| 140 | if (!(inode->i_state & I_LOCK)) |
| 141 | mark_inode_dirty_sync(inode); |
| 142 | } |
| 143 | |
| 144 | /* |
| 145 | * Variant on the above which avoids querying the system clock |
| 146 | * in situations where we know the Linux inode timestamps have |
| 147 | * just been updated (and so we can update our inode cheaply). |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 148 | */ |
| 149 | void |
| 150 | xfs_ichgtime_fast( |
| 151 | xfs_inode_t *ip, |
| 152 | struct inode *inode, |
| 153 | int flags) |
| 154 | { |
| 155 | timespec_t *tvp; |
| 156 | |
| 157 | /* |
Christoph Hellwig | 42fe2b1 | 2006-01-11 15:35:17 +1100 | [diff] [blame] | 158 | * Atime updates for read() & friends are handled lazily now, and |
| 159 | * explicit updates must go through xfs_ichgtime() |
| 160 | */ |
| 161 | ASSERT((flags & XFS_ICHGTIME_ACC) == 0); |
| 162 | |
| 163 | /* |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 164 | * We're not supposed to change timestamps in readonly-mounted |
| 165 | * filesystems. Throw it away if anyone asks us. |
| 166 | */ |
| 167 | if (unlikely(IS_RDONLY(inode))) |
| 168 | return; |
| 169 | |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 170 | if (flags & XFS_ICHGTIME_MOD) { |
| 171 | tvp = &inode->i_mtime; |
| 172 | ip->i_d.di_mtime.t_sec = (__int32_t)tvp->tv_sec; |
| 173 | ip->i_d.di_mtime.t_nsec = (__int32_t)tvp->tv_nsec; |
| 174 | } |
Nathan Scott | 4aeb664 | 2005-11-02 11:43:58 +1100 | [diff] [blame] | 175 | if (flags & XFS_ICHGTIME_CHG) { |
| 176 | tvp = &inode->i_ctime; |
| 177 | ip->i_d.di_ctime.t_sec = (__int32_t)tvp->tv_sec; |
| 178 | ip->i_d.di_ctime.t_nsec = (__int32_t)tvp->tv_nsec; |
| 179 | } |
| 180 | |
| 181 | /* |
| 182 | * We update the i_update_core field _after_ changing |
| 183 | * the timestamps in order to coordinate properly with |
| 184 | * xfs_iflush() so that we don't lose timestamp updates. |
| 185 | * This keeps us from having to hold the inode lock |
| 186 | * while doing this. We use the SYNCHRONIZE macro to |
| 187 | * ensure that the compiler does not reorder the update |
| 188 | * of i_update_core above the timestamp updates above. |
| 189 | */ |
| 190 | SYNCHRONIZE(); |
| 191 | ip->i_update_core = 1; |
| 192 | if (!(inode->i_state & I_LOCK)) |
| 193 | mark_inode_dirty_sync(inode); |
| 194 | } |
| 195 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | |
| 197 | /* |
| 198 | * Pull the link count and size up from the xfs inode to the linux inode |
| 199 | */ |
| 200 | STATIC void |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 201 | __linvfs_validate_fields( |
| 202 | struct inode *ip, |
| 203 | struct vattr *vattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | { |
| 205 | vnode_t *vp = LINVFS_GET_VP(ip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | int error; |
| 207 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 208 | vattr->va_mask = XFS_AT_NLINK|XFS_AT_SIZE|XFS_AT_NBLOCKS; |
| 209 | VOP_GETATTR(vp, vattr, ATTR_LAZY, NULL, error); |
| 210 | if (likely(!error)) { |
| 211 | ip->i_nlink = vattr->va_nlink; |
| 212 | ip->i_blocks = vattr->va_nblocks; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 214 | /* we're under i_sem so i_size can't change under us */ |
| 215 | if (i_size_read(ip) != vattr->va_size) |
| 216 | i_size_write(ip, vattr->va_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | } |
| 218 | } |
| 219 | |
| 220 | /* |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 221 | * Hook in SELinux. This is not quite correct yet, what we really need |
| 222 | * here (as we do for default ACLs) is a mechanism by which creation of |
| 223 | * these attrs can be journalled at inode creation time (along with the |
| 224 | * inode, of course, such that log replay can't cause these to be lost). |
| 225 | */ |
| 226 | STATIC int |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 227 | __linvfs_init_security( |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 228 | struct vnode *vp, |
| 229 | struct inode *dir) |
| 230 | { |
| 231 | struct inode *ip = LINVFS_GET_IP(vp); |
| 232 | size_t length; |
| 233 | void *value; |
| 234 | char *name; |
| 235 | int error; |
| 236 | |
| 237 | error = security_inode_init_security(ip, dir, &name, &value, &length); |
| 238 | if (error) { |
| 239 | if (error == -EOPNOTSUPP) |
| 240 | return 0; |
| 241 | return -error; |
| 242 | } |
| 243 | |
| 244 | VOP_ATTR_SET(vp, name, value, length, ATTR_SECURE, NULL, error); |
| 245 | if (!error) |
| 246 | VMODIFY(vp); |
| 247 | |
| 248 | kfree(name); |
| 249 | kfree(value); |
| 250 | return error; |
| 251 | } |
| 252 | |
| 253 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | * Determine whether a process has a valid fs_struct (kernel daemons |
| 255 | * like knfsd don't have an fs_struct). |
| 256 | * |
| 257 | * XXX(hch): nfsd is broken, better fix it instead. |
| 258 | */ |
| 259 | STATIC inline int |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 260 | __linvfs_has_fs_struct(struct task_struct *task) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | { |
| 262 | return (task->fs != init_task.fs); |
| 263 | } |
| 264 | |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 265 | STATIC inline void |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 266 | __linvfs_cleanup_inode( |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 267 | vnode_t *dvp, |
| 268 | vnode_t *vp, |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 269 | struct dentry *dentry, |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 270 | int mode) |
| 271 | { |
| 272 | struct dentry teardown = {}; |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 273 | int error; |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 274 | |
| 275 | /* Oh, the horror. |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 276 | * If we can't add the ACL or we fail in |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 277 | * linvfs_init_security we must back out. |
| 278 | * ENOSPC can hit here, among other things. |
| 279 | */ |
| 280 | teardown.d_inode = LINVFS_GET_IP(vp); |
| 281 | teardown.d_name = dentry->d_name; |
| 282 | |
| 283 | if (S_ISDIR(mode)) |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 284 | VOP_RMDIR(dvp, &teardown, NULL, error); |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 285 | else |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 286 | VOP_REMOVE(dvp, &teardown, NULL, error); |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 287 | VN_RELE(vp); |
| 288 | } |
| 289 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | STATIC int |
| 291 | linvfs_mknod( |
| 292 | struct inode *dir, |
| 293 | struct dentry *dentry, |
| 294 | int mode, |
| 295 | dev_t rdev) |
| 296 | { |
| 297 | struct inode *ip; |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 298 | vattr_t *vattr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | vnode_t *vp = NULL, *dvp = LINVFS_GET_VP(dir); |
| 300 | xfs_acl_t *default_acl = NULL; |
| 301 | attrexists_t test_default_acl = _ACL_DEFAULT_EXISTS; |
| 302 | int error; |
| 303 | |
| 304 | /* |
| 305 | * Irix uses Missed'em'V split, but doesn't want to see |
| 306 | * the upper 5 bits of (14bit) major. |
| 307 | */ |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 308 | if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | return -EINVAL; |
| 310 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 311 | vattr = kmalloc(sizeof(*vattr), GFP_KERNEL); |
| 312 | if (unlikely(!vattr)) |
| 313 | return -ENOMEM; |
| 314 | |
| 315 | if (unlikely(test_default_acl && test_default_acl(dvp))) { |
| 316 | if (!_ACL_ALLOC(default_acl)) { |
| 317 | kfree(vattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | return -ENOMEM; |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 319 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | if (!_ACL_GET_DEFAULT(dvp, default_acl)) { |
| 321 | _ACL_FREE(default_acl); |
| 322 | default_acl = NULL; |
| 323 | } |
| 324 | } |
| 325 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 326 | if (IS_POSIXACL(dir) && !default_acl && __linvfs_has_fs_struct(current)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | mode &= ~current->fs->umask; |
| 328 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 329 | memset(vattr, 0, sizeof(*vattr)); |
| 330 | vattr->va_mask = XFS_AT_TYPE|XFS_AT_MODE; |
| 331 | vattr->va_mode = mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | |
| 333 | switch (mode & S_IFMT) { |
| 334 | case S_IFCHR: case S_IFBLK: case S_IFIFO: case S_IFSOCK: |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 335 | vattr->va_rdev = sysv_encode_dev(rdev); |
| 336 | vattr->va_mask |= XFS_AT_RDEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | /*FALLTHROUGH*/ |
| 338 | case S_IFREG: |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 339 | VOP_CREATE(dvp, dentry, vattr, &vp, NULL, error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | break; |
| 341 | case S_IFDIR: |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 342 | VOP_MKDIR(dvp, dentry, vattr, &vp, NULL, error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | break; |
| 344 | default: |
| 345 | error = EINVAL; |
| 346 | break; |
| 347 | } |
| 348 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 349 | if (unlikely(!error)) { |
| 350 | error = __linvfs_init_security(vp, dir); |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 351 | if (error) |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 352 | __linvfs_cleanup_inode(dvp, vp, dentry, mode); |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 353 | } |
Nathan Scott | 446ada4 | 2006-01-11 15:35:44 +1100 | [diff] [blame] | 354 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 355 | if (unlikely(default_acl)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | if (!error) { |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 357 | error = _ACL_INHERIT(vp, vattr, default_acl); |
| 358 | if (!error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | VMODIFY(vp); |
Yingping Lu | 3a69c7d | 2006-02-01 12:14:34 +1100 | [diff] [blame] | 360 | else |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 361 | __linvfs_cleanup_inode(dvp, vp, dentry, mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | } |
| 363 | _ACL_FREE(default_acl); |
| 364 | } |
| 365 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 366 | if (likely(!error)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | ASSERT(vp); |
| 368 | ip = LINVFS_GET_IP(vp); |
| 369 | |
| 370 | if (S_ISCHR(mode) || S_ISBLK(mode)) |
| 371 | ip->i_rdev = rdev; |
| 372 | else if (S_ISDIR(mode)) |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 373 | __linvfs_validate_fields(ip, vattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | d_instantiate(dentry, ip); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 375 | __linvfs_validate_fields(dir, vattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | } |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 377 | kfree(vattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | return -error; |
| 379 | } |
| 380 | |
| 381 | STATIC int |
| 382 | linvfs_create( |
| 383 | struct inode *dir, |
| 384 | struct dentry *dentry, |
| 385 | int mode, |
| 386 | struct nameidata *nd) |
| 387 | { |
| 388 | return linvfs_mknod(dir, dentry, mode, 0); |
| 389 | } |
| 390 | |
| 391 | STATIC int |
| 392 | linvfs_mkdir( |
| 393 | struct inode *dir, |
| 394 | struct dentry *dentry, |
| 395 | int mode) |
| 396 | { |
| 397 | return linvfs_mknod(dir, dentry, mode|S_IFDIR, 0); |
| 398 | } |
| 399 | |
| 400 | STATIC struct dentry * |
| 401 | linvfs_lookup( |
| 402 | struct inode *dir, |
| 403 | struct dentry *dentry, |
| 404 | struct nameidata *nd) |
| 405 | { |
| 406 | struct vnode *vp = LINVFS_GET_VP(dir), *cvp; |
| 407 | int error; |
| 408 | |
| 409 | if (dentry->d_name.len >= MAXNAMELEN) |
| 410 | return ERR_PTR(-ENAMETOOLONG); |
| 411 | |
| 412 | VOP_LOOKUP(vp, dentry, &cvp, 0, NULL, NULL, error); |
| 413 | if (error) { |
| 414 | if (unlikely(error != ENOENT)) |
| 415 | return ERR_PTR(-error); |
| 416 | d_add(dentry, NULL); |
| 417 | return NULL; |
| 418 | } |
| 419 | |
| 420 | return d_splice_alias(LINVFS_GET_IP(cvp), dentry); |
| 421 | } |
| 422 | |
| 423 | STATIC int |
| 424 | linvfs_link( |
| 425 | struct dentry *old_dentry, |
| 426 | struct inode *dir, |
| 427 | struct dentry *dentry) |
| 428 | { |
| 429 | struct inode *ip; /* inode of guy being linked to */ |
| 430 | vnode_t *tdvp; /* target directory for new name/link */ |
| 431 | vnode_t *vp; /* vp of name being linked */ |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 432 | vattr_t *vattr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | int error; |
| 434 | |
| 435 | ip = old_dentry->d_inode; /* inode being linked to */ |
| 436 | if (S_ISDIR(ip->i_mode)) |
| 437 | return -EPERM; |
| 438 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 439 | vattr = kmalloc(sizeof(*vattr), GFP_KERNEL); |
| 440 | if (unlikely(!vattr)) |
| 441 | return -ENOMEM; |
| 442 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | tdvp = LINVFS_GET_VP(dir); |
| 444 | vp = LINVFS_GET_VP(ip); |
| 445 | |
| 446 | VOP_LINK(tdvp, vp, dentry, NULL, error); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 447 | if (likely(!error)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | VMODIFY(tdvp); |
| 449 | VN_HOLD(vp); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 450 | __linvfs_validate_fields(ip, vattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | d_instantiate(dentry, ip); |
| 452 | } |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 453 | kfree(vattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | return -error; |
| 455 | } |
| 456 | |
| 457 | STATIC int |
| 458 | linvfs_unlink( |
| 459 | struct inode *dir, |
| 460 | struct dentry *dentry) |
| 461 | { |
| 462 | struct inode *inode; |
| 463 | vnode_t *dvp; /* directory containing name to remove */ |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 464 | vattr_t *vattr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | int error; |
| 466 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 467 | vattr = kmalloc(sizeof(*vattr), GFP_KERNEL); |
| 468 | if (unlikely(!vattr)) |
| 469 | return -ENOMEM; |
| 470 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | inode = dentry->d_inode; |
| 472 | dvp = LINVFS_GET_VP(dir); |
| 473 | |
| 474 | VOP_REMOVE(dvp, dentry, NULL, error); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 475 | if (likely(!error)) { |
| 476 | __linvfs_validate_fields(dir, vattr); /* size needs update */ |
| 477 | __linvfs_validate_fields(inode, vattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | } |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 479 | kfree(vattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | return -error; |
| 481 | } |
| 482 | |
| 483 | STATIC int |
| 484 | linvfs_symlink( |
| 485 | struct inode *dir, |
| 486 | struct dentry *dentry, |
| 487 | const char *symname) |
| 488 | { |
| 489 | struct inode *ip; |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 490 | vattr_t *vattr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | vnode_t *dvp; /* directory containing name of symlink */ |
| 492 | vnode_t *cvp; /* used to lookup symlink to put in dentry */ |
| 493 | int error; |
| 494 | |
| 495 | dvp = LINVFS_GET_VP(dir); |
| 496 | cvp = NULL; |
| 497 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 498 | vattr = kmalloc(sizeof(*vattr), GFP_KERNEL); |
| 499 | if (unlikely(!vattr)) |
| 500 | return -ENOMEM; |
| 501 | |
| 502 | memset(vattr, 0, sizeof(*vattr)); |
| 503 | vattr->va_mode = S_IFLNK | |
Christoph Hellwig | 0432dab | 2005-09-02 16:46:51 +1000 | [diff] [blame] | 504 | (irix_symlink_mode ? 0777 & ~current->fs->umask : S_IRWXUGO); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 505 | vattr->va_mask = XFS_AT_TYPE|XFS_AT_MODE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | |
| 507 | error = 0; |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 508 | VOP_SYMLINK(dvp, dentry, vattr, (char *)symname, &cvp, NULL, error); |
Nathan Scott | 5424570 | 2006-01-16 15:54:05 +1100 | [diff] [blame] | 509 | if (likely(!error && cvp)) { |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 510 | error = __linvfs_init_security(cvp, dir); |
Nathan Scott | 5424570 | 2006-01-16 15:54:05 +1100 | [diff] [blame] | 511 | if (likely(!error)) { |
| 512 | ip = LINVFS_GET_IP(cvp); |
| 513 | d_instantiate(dentry, ip); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 514 | __linvfs_validate_fields(dir, vattr); |
| 515 | __linvfs_validate_fields(ip, vattr); |
Nathan Scott | 5424570 | 2006-01-16 15:54:05 +1100 | [diff] [blame] | 516 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | } |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 518 | kfree(vattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | return -error; |
| 520 | } |
| 521 | |
| 522 | STATIC int |
| 523 | linvfs_rmdir( |
| 524 | struct inode *dir, |
| 525 | struct dentry *dentry) |
| 526 | { |
| 527 | struct inode *inode = dentry->d_inode; |
| 528 | vnode_t *dvp = LINVFS_GET_VP(dir); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 529 | vattr_t *vattr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | int error; |
| 531 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 532 | vattr = kmalloc(sizeof(*vattr), GFP_KERNEL); |
| 533 | if (unlikely(!vattr)) |
| 534 | return -ENOMEM; |
| 535 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | VOP_RMDIR(dvp, dentry, NULL, error); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 537 | if (likely(!error)) { |
| 538 | __linvfs_validate_fields(inode, vattr); |
| 539 | __linvfs_validate_fields(dir, vattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | } |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 541 | kfree(vattr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | return -error; |
| 543 | } |
| 544 | |
| 545 | STATIC int |
| 546 | linvfs_rename( |
| 547 | struct inode *odir, |
| 548 | struct dentry *odentry, |
| 549 | struct inode *ndir, |
| 550 | struct dentry *ndentry) |
| 551 | { |
| 552 | struct inode *new_inode = ndentry->d_inode; |
| 553 | vnode_t *fvp; /* from directory */ |
| 554 | vnode_t *tvp; /* target directory */ |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 555 | vattr_t *vattr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | int error; |
| 557 | |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 558 | vattr = kmalloc(sizeof(*vattr), GFP_KERNEL); |
| 559 | if (unlikely(!vattr)) |
| 560 | return -ENOMEM; |
| 561 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | fvp = LINVFS_GET_VP(odir); |
| 563 | tvp = LINVFS_GET_VP(ndir); |
| 564 | |
| 565 | VOP_RENAME(fvp, odentry, tvp, ndentry, NULL, error); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 566 | if (likely(!error)) { |
| 567 | if (new_inode) |
| 568 | __linvfs_validate_fields(new_inode, vattr); |
| 569 | __linvfs_validate_fields(odir, vattr); |
| 570 | if (ndir != odir) |
| 571 | __linvfs_validate_fields(ndir, vattr); |
| 572 | } |
| 573 | kfree(vattr); |
| 574 | return -error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | } |
| 576 | |
| 577 | /* |
| 578 | * careful here - this function can get called recursively, so |
| 579 | * we need to be very careful about how much stack we use. |
| 580 | * uio is kmalloced for this reason... |
| 581 | */ |
Al Viro | 008b150 | 2005-08-20 00:17:39 +0100 | [diff] [blame] | 582 | STATIC void * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | linvfs_follow_link( |
| 584 | struct dentry *dentry, |
| 585 | struct nameidata *nd) |
| 586 | { |
| 587 | vnode_t *vp; |
| 588 | uio_t *uio; |
| 589 | iovec_t iov; |
| 590 | int error; |
| 591 | char *link; |
| 592 | |
| 593 | ASSERT(dentry); |
| 594 | ASSERT(nd); |
| 595 | |
Nathan Scott | 0d1335b | 2006-01-12 10:32:51 +1100 | [diff] [blame] | 596 | link = (char *)kmalloc(MAXPATHLEN+1, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | if (!link) { |
| 598 | nd_set_link(nd, ERR_PTR(-ENOMEM)); |
Al Viro | 008b150 | 2005-08-20 00:17:39 +0100 | [diff] [blame] | 599 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | } |
| 601 | |
| 602 | uio = (uio_t *)kmalloc(sizeof(uio_t), GFP_KERNEL); |
| 603 | if (!uio) { |
| 604 | kfree(link); |
| 605 | nd_set_link(nd, ERR_PTR(-ENOMEM)); |
Al Viro | 008b150 | 2005-08-20 00:17:39 +0100 | [diff] [blame] | 606 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | } |
| 608 | |
| 609 | vp = LINVFS_GET_VP(dentry->d_inode); |
| 610 | |
| 611 | iov.iov_base = link; |
Nathan Scott | 0d1335b | 2006-01-12 10:32:51 +1100 | [diff] [blame] | 612 | iov.iov_len = MAXPATHLEN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | |
| 614 | uio->uio_iov = &iov; |
| 615 | uio->uio_offset = 0; |
| 616 | uio->uio_segflg = UIO_SYSSPACE; |
Nathan Scott | 0d1335b | 2006-01-12 10:32:51 +1100 | [diff] [blame] | 617 | uio->uio_resid = MAXPATHLEN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | uio->uio_iovcnt = 1; |
| 619 | |
| 620 | VOP_READLINK(vp, uio, 0, NULL, error); |
| 621 | if (error) { |
| 622 | kfree(link); |
| 623 | link = ERR_PTR(-error); |
| 624 | } else { |
Nathan Scott | 0d1335b | 2006-01-12 10:32:51 +1100 | [diff] [blame] | 625 | link[MAXPATHLEN - uio->uio_resid] = '\0'; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | } |
| 627 | kfree(uio); |
| 628 | |
| 629 | nd_set_link(nd, link); |
Al Viro | 008b150 | 2005-08-20 00:17:39 +0100 | [diff] [blame] | 630 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | } |
| 632 | |
Nathan Scott | cde410a | 2005-09-05 11:47:01 +1000 | [diff] [blame] | 633 | STATIC void |
| 634 | linvfs_put_link( |
| 635 | struct dentry *dentry, |
| 636 | struct nameidata *nd, |
| 637 | void *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | { |
Nathan Scott | cde410a | 2005-09-05 11:47:01 +1000 | [diff] [blame] | 639 | char *s = nd_get_link(nd); |
| 640 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | if (!IS_ERR(s)) |
| 642 | kfree(s); |
| 643 | } |
| 644 | |
| 645 | #ifdef CONFIG_XFS_POSIX_ACL |
| 646 | STATIC int |
| 647 | linvfs_permission( |
| 648 | struct inode *inode, |
| 649 | int mode, |
| 650 | struct nameidata *nd) |
| 651 | { |
| 652 | vnode_t *vp = LINVFS_GET_VP(inode); |
| 653 | int error; |
| 654 | |
| 655 | mode <<= 6; /* convert from linux to vnode access bits */ |
| 656 | VOP_ACCESS(vp, mode, NULL, error); |
| 657 | return -error; |
| 658 | } |
| 659 | #else |
| 660 | #define linvfs_permission NULL |
| 661 | #endif |
| 662 | |
| 663 | STATIC int |
| 664 | linvfs_getattr( |
| 665 | struct vfsmount *mnt, |
| 666 | struct dentry *dentry, |
| 667 | struct kstat *stat) |
| 668 | { |
| 669 | struct inode *inode = dentry->d_inode; |
| 670 | vnode_t *vp = LINVFS_GET_VP(inode); |
| 671 | int error = 0; |
| 672 | |
| 673 | if (unlikely(vp->v_flag & VMODIFIED)) |
| 674 | error = vn_revalidate(vp); |
| 675 | if (!error) |
| 676 | generic_fillattr(inode, stat); |
| 677 | return 0; |
| 678 | } |
| 679 | |
| 680 | STATIC int |
| 681 | linvfs_setattr( |
| 682 | struct dentry *dentry, |
| 683 | struct iattr *attr) |
| 684 | { |
| 685 | struct inode *inode = dentry->d_inode; |
| 686 | unsigned int ia_valid = attr->ia_valid; |
| 687 | vnode_t *vp = LINVFS_GET_VP(inode); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 688 | vattr_t vattr = { 0 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | int flags = 0; |
| 690 | int error; |
| 691 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | if (ia_valid & ATTR_UID) { |
| 693 | vattr.va_mask |= XFS_AT_UID; |
| 694 | vattr.va_uid = attr->ia_uid; |
| 695 | } |
| 696 | if (ia_valid & ATTR_GID) { |
| 697 | vattr.va_mask |= XFS_AT_GID; |
| 698 | vattr.va_gid = attr->ia_gid; |
| 699 | } |
| 700 | if (ia_valid & ATTR_SIZE) { |
| 701 | vattr.va_mask |= XFS_AT_SIZE; |
| 702 | vattr.va_size = attr->ia_size; |
| 703 | } |
| 704 | if (ia_valid & ATTR_ATIME) { |
| 705 | vattr.va_mask |= XFS_AT_ATIME; |
| 706 | vattr.va_atime = attr->ia_atime; |
Nathan Scott | 9bd6f13 | 2006-02-07 20:27:44 +1100 | [diff] [blame] | 707 | if (ia_valid & ATTR_ATIME_SET) |
| 708 | inode->i_atime = attr->ia_atime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | } |
| 710 | if (ia_valid & ATTR_MTIME) { |
| 711 | vattr.va_mask |= XFS_AT_MTIME; |
| 712 | vattr.va_mtime = attr->ia_mtime; |
| 713 | } |
| 714 | if (ia_valid & ATTR_CTIME) { |
| 715 | vattr.va_mask |= XFS_AT_CTIME; |
| 716 | vattr.va_ctime = attr->ia_ctime; |
| 717 | } |
| 718 | if (ia_valid & ATTR_MODE) { |
| 719 | vattr.va_mask |= XFS_AT_MODE; |
| 720 | vattr.va_mode = attr->ia_mode; |
| 721 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) |
| 722 | inode->i_mode &= ~S_ISGID; |
| 723 | } |
| 724 | |
| 725 | if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) |
| 726 | flags |= ATTR_UTIME; |
| 727 | #ifdef ATTR_NO_BLOCK |
| 728 | if ((ia_valid & ATTR_NO_BLOCK)) |
| 729 | flags |= ATTR_NONBLOCK; |
| 730 | #endif |
| 731 | |
| 732 | VOP_SETATTR(vp, &vattr, flags, NULL, error); |
Nathan Scott | 220b528 | 2006-03-14 13:33:36 +1100 | [diff] [blame^] | 733 | if (likely(!error)) |
| 734 | __vn_revalidate(vp, &vattr); |
| 735 | return -error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | } |
| 737 | |
| 738 | STATIC void |
| 739 | linvfs_truncate( |
| 740 | struct inode *inode) |
| 741 | { |
| 742 | block_truncate_page(inode->i_mapping, inode->i_size, linvfs_get_block); |
| 743 | } |
| 744 | |
| 745 | STATIC int |
| 746 | linvfs_setxattr( |
| 747 | struct dentry *dentry, |
| 748 | const char *name, |
| 749 | const void *data, |
| 750 | size_t size, |
| 751 | int flags) |
| 752 | { |
| 753 | vnode_t *vp = LINVFS_GET_VP(dentry->d_inode); |
| 754 | char *attr = (char *)name; |
| 755 | attrnames_t *namesp; |
| 756 | int xflags = 0; |
| 757 | int error; |
| 758 | |
| 759 | namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT); |
| 760 | if (!namesp) |
| 761 | return -EOPNOTSUPP; |
| 762 | attr += namesp->attr_namelen; |
| 763 | error = namesp->attr_capable(vp, NULL); |
| 764 | if (error) |
| 765 | return error; |
| 766 | |
| 767 | /* Convert Linux syscall to XFS internal ATTR flags */ |
| 768 | if (flags & XATTR_CREATE) |
| 769 | xflags |= ATTR_CREATE; |
| 770 | if (flags & XATTR_REPLACE) |
| 771 | xflags |= ATTR_REPLACE; |
| 772 | xflags |= namesp->attr_flag; |
| 773 | return namesp->attr_set(vp, attr, (void *)data, size, xflags); |
| 774 | } |
| 775 | |
| 776 | STATIC ssize_t |
| 777 | linvfs_getxattr( |
| 778 | struct dentry *dentry, |
| 779 | const char *name, |
| 780 | void *data, |
| 781 | size_t size) |
| 782 | { |
| 783 | vnode_t *vp = LINVFS_GET_VP(dentry->d_inode); |
| 784 | char *attr = (char *)name; |
| 785 | attrnames_t *namesp; |
| 786 | int xflags = 0; |
| 787 | ssize_t error; |
| 788 | |
| 789 | namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT); |
| 790 | if (!namesp) |
| 791 | return -EOPNOTSUPP; |
| 792 | attr += namesp->attr_namelen; |
| 793 | error = namesp->attr_capable(vp, NULL); |
| 794 | if (error) |
| 795 | return error; |
| 796 | |
| 797 | /* Convert Linux syscall to XFS internal ATTR flags */ |
| 798 | if (!size) { |
| 799 | xflags |= ATTR_KERNOVAL; |
| 800 | data = NULL; |
| 801 | } |
| 802 | xflags |= namesp->attr_flag; |
| 803 | return namesp->attr_get(vp, attr, (void *)data, size, xflags); |
| 804 | } |
| 805 | |
| 806 | STATIC ssize_t |
| 807 | linvfs_listxattr( |
| 808 | struct dentry *dentry, |
| 809 | char *data, |
| 810 | size_t size) |
| 811 | { |
| 812 | vnode_t *vp = LINVFS_GET_VP(dentry->d_inode); |
| 813 | int error, xflags = ATTR_KERNAMELS; |
| 814 | ssize_t result; |
| 815 | |
| 816 | if (!size) |
| 817 | xflags |= ATTR_KERNOVAL; |
| 818 | xflags |= capable(CAP_SYS_ADMIN) ? ATTR_KERNFULLS : ATTR_KERNORMALS; |
| 819 | |
| 820 | error = attr_generic_list(vp, data, size, xflags, &result); |
| 821 | if (error < 0) |
| 822 | return error; |
| 823 | return result; |
| 824 | } |
| 825 | |
| 826 | STATIC int |
| 827 | linvfs_removexattr( |
| 828 | struct dentry *dentry, |
| 829 | const char *name) |
| 830 | { |
| 831 | vnode_t *vp = LINVFS_GET_VP(dentry->d_inode); |
| 832 | char *attr = (char *)name; |
| 833 | attrnames_t *namesp; |
| 834 | int xflags = 0; |
| 835 | int error; |
| 836 | |
| 837 | namesp = attr_lookup_namespace(attr, attr_namespaces, ATTR_NAMECOUNT); |
| 838 | if (!namesp) |
| 839 | return -EOPNOTSUPP; |
| 840 | attr += namesp->attr_namelen; |
| 841 | error = namesp->attr_capable(vp, NULL); |
| 842 | if (error) |
| 843 | return error; |
| 844 | xflags |= namesp->attr_flag; |
| 845 | return namesp->attr_remove(vp, attr, xflags); |
| 846 | } |
| 847 | |
| 848 | |
| 849 | struct inode_operations linvfs_file_inode_operations = { |
| 850 | .permission = linvfs_permission, |
| 851 | .truncate = linvfs_truncate, |
| 852 | .getattr = linvfs_getattr, |
| 853 | .setattr = linvfs_setattr, |
| 854 | .setxattr = linvfs_setxattr, |
| 855 | .getxattr = linvfs_getxattr, |
| 856 | .listxattr = linvfs_listxattr, |
| 857 | .removexattr = linvfs_removexattr, |
| 858 | }; |
| 859 | |
| 860 | struct inode_operations linvfs_dir_inode_operations = { |
| 861 | .create = linvfs_create, |
| 862 | .lookup = linvfs_lookup, |
| 863 | .link = linvfs_link, |
| 864 | .unlink = linvfs_unlink, |
| 865 | .symlink = linvfs_symlink, |
| 866 | .mkdir = linvfs_mkdir, |
| 867 | .rmdir = linvfs_rmdir, |
| 868 | .mknod = linvfs_mknod, |
| 869 | .rename = linvfs_rename, |
| 870 | .permission = linvfs_permission, |
| 871 | .getattr = linvfs_getattr, |
| 872 | .setattr = linvfs_setattr, |
| 873 | .setxattr = linvfs_setxattr, |
| 874 | .getxattr = linvfs_getxattr, |
| 875 | .listxattr = linvfs_listxattr, |
| 876 | .removexattr = linvfs_removexattr, |
| 877 | }; |
| 878 | |
| 879 | struct inode_operations linvfs_symlink_inode_operations = { |
| 880 | .readlink = generic_readlink, |
| 881 | .follow_link = linvfs_follow_link, |
| 882 | .put_link = linvfs_put_link, |
| 883 | .permission = linvfs_permission, |
| 884 | .getattr = linvfs_getattr, |
| 885 | .setattr = linvfs_setattr, |
| 886 | .setxattr = linvfs_setxattr, |
| 887 | .getxattr = linvfs_getxattr, |
| 888 | .listxattr = linvfs_listxattr, |
| 889 | .removexattr = linvfs_removexattr, |
| 890 | }; |