Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 1 | #include <linux/ceph/ceph_debug.h> |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 2 | |
| 3 | #include <linux/module.h> |
| 4 | #include <linux/fs.h> |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 5 | #include <linux/slab.h> |
| 6 | #include <linux/string.h> |
| 7 | #include <linux/uaccess.h> |
| 8 | #include <linux/kernel.h> |
| 9 | #include <linux/namei.h> |
| 10 | #include <linux/writeback.h> |
| 11 | #include <linux/vmalloc.h> |
Linus Torvalds | 4db658e | 2014-01-28 18:06:18 -0800 | [diff] [blame] | 12 | #include <linux/posix_acl.h> |
Yan, Zheng | 3e7fbe9 | 2014-04-18 16:00:30 +0800 | [diff] [blame] | 13 | #include <linux/random.h> |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 14 | |
| 15 | #include "super.h" |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 16 | #include "mds_client.h" |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 17 | #include "cache.h" |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 18 | #include <linux/ceph/decode.h> |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 19 | |
| 20 | /* |
| 21 | * Ceph inode operations |
| 22 | * |
| 23 | * Implement basic inode helpers (get, alloc) and inode ops (getattr, |
| 24 | * setattr, etc.), xattr helpers, and helpers for assimilating |
| 25 | * metadata returned by the MDS into our cache. |
| 26 | * |
| 27 | * Also define helpers for doing asynchronous writeback, invalidation, |
| 28 | * and truncation for the benefit of those who can't afford to block |
| 29 | * (typically because they are in the message handler path). |
| 30 | */ |
| 31 | |
| 32 | static const struct inode_operations ceph_symlink_iops; |
| 33 | |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 34 | static void ceph_invalidate_work(struct work_struct *work); |
| 35 | static void ceph_writeback_work(struct work_struct *work); |
| 36 | static void ceph_vmtruncate_work(struct work_struct *work); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 37 | |
| 38 | /* |
| 39 | * find or create an inode, given the ceph ino number |
| 40 | */ |
Yehuda Sadeh | ad1fee9 | 2011-01-21 16:44:03 -0800 | [diff] [blame] | 41 | static int ceph_set_ino_cb(struct inode *inode, void *data) |
| 42 | { |
| 43 | ceph_inode(inode)->i_vino = *(struct ceph_vino *)data; |
| 44 | inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data); |
| 45 | return 0; |
| 46 | } |
| 47 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 48 | struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino) |
| 49 | { |
| 50 | struct inode *inode; |
| 51 | ino_t t = ceph_vino_to_ino(vino); |
| 52 | |
| 53 | inode = iget5_locked(sb, t, ceph_ino_compare, ceph_set_ino_cb, &vino); |
| 54 | if (inode == NULL) |
| 55 | return ERR_PTR(-ENOMEM); |
| 56 | if (inode->i_state & I_NEW) { |
| 57 | dout("get_inode created new inode %p %llx.%llx ino %llx\n", |
| 58 | inode, ceph_vinop(inode), (u64)inode->i_ino); |
| 59 | unlock_new_inode(inode); |
| 60 | } |
| 61 | |
| 62 | dout("get_inode on %lu=%llx.%llx got %p\n", inode->i_ino, vino.ino, |
| 63 | vino.snap, inode); |
| 64 | return inode; |
| 65 | } |
| 66 | |
| 67 | /* |
| 68 | * get/constuct snapdir inode for a given directory |
| 69 | */ |
| 70 | struct inode *ceph_get_snapdir(struct inode *parent) |
| 71 | { |
| 72 | struct ceph_vino vino = { |
| 73 | .ino = ceph_ino(parent), |
| 74 | .snap = CEPH_SNAPDIR, |
| 75 | }; |
| 76 | struct inode *inode = ceph_get_inode(parent->i_sb, vino); |
Sage Weil | b377ff1 | 2009-11-11 15:22:37 -0800 | [diff] [blame] | 77 | struct ceph_inode_info *ci = ceph_inode(inode); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 78 | |
| 79 | BUG_ON(!S_ISDIR(parent->i_mode)); |
| 80 | if (IS_ERR(inode)) |
Julia Lawall | 7e34bc5 | 2010-05-22 12:01:14 +0200 | [diff] [blame] | 81 | return inode; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 82 | inode->i_mode = parent->i_mode; |
| 83 | inode->i_uid = parent->i_uid; |
| 84 | inode->i_gid = parent->i_gid; |
| 85 | inode->i_op = &ceph_dir_iops; |
| 86 | inode->i_fop = &ceph_dir_fops; |
Sage Weil | b377ff1 | 2009-11-11 15:22:37 -0800 | [diff] [blame] | 87 | ci->i_snap_caps = CEPH_CAP_PIN; /* so we can open */ |
| 88 | ci->i_rbytes = 0; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 89 | return inode; |
| 90 | } |
| 91 | |
| 92 | const struct inode_operations ceph_file_iops = { |
| 93 | .permission = ceph_permission, |
| 94 | .setattr = ceph_setattr, |
| 95 | .getattr = ceph_getattr, |
| 96 | .setxattr = ceph_setxattr, |
| 97 | .getxattr = ceph_getxattr, |
| 98 | .listxattr = ceph_listxattr, |
| 99 | .removexattr = ceph_removexattr, |
Guangliang Zhao | 7221fe4 | 2013-11-11 15:18:03 +0800 | [diff] [blame] | 100 | .get_acl = ceph_get_acl, |
Sage Weil | 72466d0 | 2014-01-29 06:22:25 -0800 | [diff] [blame] | 101 | .set_acl = ceph_set_acl, |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 102 | }; |
| 103 | |
| 104 | |
| 105 | /* |
| 106 | * We use a 'frag tree' to keep track of the MDS's directory fragments |
| 107 | * for a given inode (usually there is just a single fragment). We |
| 108 | * need to know when a child frag is delegated to a new MDS, or when |
| 109 | * it is flagged as replicated, so we can direct our requests |
| 110 | * accordingly. |
| 111 | */ |
| 112 | |
| 113 | /* |
| 114 | * find/create a frag in the tree |
| 115 | */ |
| 116 | static struct ceph_inode_frag *__get_or_create_frag(struct ceph_inode_info *ci, |
| 117 | u32 f) |
| 118 | { |
| 119 | struct rb_node **p; |
| 120 | struct rb_node *parent = NULL; |
| 121 | struct ceph_inode_frag *frag; |
| 122 | int c; |
| 123 | |
| 124 | p = &ci->i_fragtree.rb_node; |
| 125 | while (*p) { |
| 126 | parent = *p; |
| 127 | frag = rb_entry(parent, struct ceph_inode_frag, node); |
| 128 | c = ceph_frag_compare(f, frag->frag); |
| 129 | if (c < 0) |
| 130 | p = &(*p)->rb_left; |
| 131 | else if (c > 0) |
| 132 | p = &(*p)->rb_right; |
| 133 | else |
| 134 | return frag; |
| 135 | } |
| 136 | |
| 137 | frag = kmalloc(sizeof(*frag), GFP_NOFS); |
| 138 | if (!frag) { |
| 139 | pr_err("__get_or_create_frag ENOMEM on %p %llx.%llx " |
| 140 | "frag %x\n", &ci->vfs_inode, |
| 141 | ceph_vinop(&ci->vfs_inode), f); |
| 142 | return ERR_PTR(-ENOMEM); |
| 143 | } |
| 144 | frag->frag = f; |
| 145 | frag->split_by = 0; |
| 146 | frag->mds = -1; |
| 147 | frag->ndist = 0; |
| 148 | |
| 149 | rb_link_node(&frag->node, parent, p); |
| 150 | rb_insert_color(&frag->node, &ci->i_fragtree); |
| 151 | |
| 152 | dout("get_or_create_frag added %llx.%llx frag %x\n", |
| 153 | ceph_vinop(&ci->vfs_inode), f); |
| 154 | return frag; |
| 155 | } |
| 156 | |
| 157 | /* |
| 158 | * find a specific frag @f |
| 159 | */ |
| 160 | struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, u32 f) |
| 161 | { |
| 162 | struct rb_node *n = ci->i_fragtree.rb_node; |
| 163 | |
| 164 | while (n) { |
| 165 | struct ceph_inode_frag *frag = |
| 166 | rb_entry(n, struct ceph_inode_frag, node); |
| 167 | int c = ceph_frag_compare(f, frag->frag); |
| 168 | if (c < 0) |
| 169 | n = n->rb_left; |
| 170 | else if (c > 0) |
| 171 | n = n->rb_right; |
| 172 | else |
| 173 | return frag; |
| 174 | } |
| 175 | return NULL; |
| 176 | } |
| 177 | |
| 178 | /* |
| 179 | * Choose frag containing the given value @v. If @pfrag is |
| 180 | * specified, copy the frag delegation info to the caller if |
| 181 | * it is present. |
| 182 | */ |
Yan, Zheng | 3e7fbe9 | 2014-04-18 16:00:30 +0800 | [diff] [blame] | 183 | static u32 __ceph_choose_frag(struct ceph_inode_info *ci, u32 v, |
| 184 | struct ceph_inode_frag *pfrag, int *found) |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 185 | { |
| 186 | u32 t = ceph_frag_make(0, 0); |
| 187 | struct ceph_inode_frag *frag; |
| 188 | unsigned nway, i; |
| 189 | u32 n; |
| 190 | |
| 191 | if (found) |
| 192 | *found = 0; |
| 193 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 194 | while (1) { |
| 195 | WARN_ON(!ceph_frag_contains_value(t, v)); |
| 196 | frag = __ceph_find_frag(ci, t); |
| 197 | if (!frag) |
| 198 | break; /* t is a leaf */ |
| 199 | if (frag->split_by == 0) { |
| 200 | if (pfrag) |
| 201 | memcpy(pfrag, frag, sizeof(*pfrag)); |
| 202 | if (found) |
| 203 | *found = 1; |
| 204 | break; |
| 205 | } |
| 206 | |
| 207 | /* choose child */ |
| 208 | nway = 1 << frag->split_by; |
| 209 | dout("choose_frag(%x) %x splits by %d (%d ways)\n", v, t, |
| 210 | frag->split_by, nway); |
| 211 | for (i = 0; i < nway; i++) { |
| 212 | n = ceph_frag_make_child(t, frag->split_by, i); |
| 213 | if (ceph_frag_contains_value(n, v)) { |
| 214 | t = n; |
| 215 | break; |
| 216 | } |
| 217 | } |
| 218 | BUG_ON(i == nway); |
| 219 | } |
| 220 | dout("choose_frag(%x) = %x\n", v, t); |
| 221 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 222 | return t; |
| 223 | } |
| 224 | |
Yan, Zheng | 3e7fbe9 | 2014-04-18 16:00:30 +0800 | [diff] [blame] | 225 | u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, |
| 226 | struct ceph_inode_frag *pfrag, int *found) |
| 227 | { |
| 228 | u32 ret; |
| 229 | mutex_lock(&ci->i_fragtree_mutex); |
| 230 | ret = __ceph_choose_frag(ci, v, pfrag, found); |
| 231 | mutex_unlock(&ci->i_fragtree_mutex); |
| 232 | return ret; |
| 233 | } |
| 234 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 235 | /* |
| 236 | * Process dirfrag (delegation) info from the mds. Include leaf |
| 237 | * fragment in tree ONLY if ndist > 0. Otherwise, only |
| 238 | * branches/splits are included in i_fragtree) |
| 239 | */ |
| 240 | static int ceph_fill_dirfrag(struct inode *inode, |
| 241 | struct ceph_mds_reply_dirfrag *dirinfo) |
| 242 | { |
| 243 | struct ceph_inode_info *ci = ceph_inode(inode); |
| 244 | struct ceph_inode_frag *frag; |
| 245 | u32 id = le32_to_cpu(dirinfo->frag); |
| 246 | int mds = le32_to_cpu(dirinfo->auth); |
| 247 | int ndist = le32_to_cpu(dirinfo->ndist); |
Yan, Zheng | 8d08503 | 2014-04-18 22:01:38 +0800 | [diff] [blame] | 248 | int diri_auth = -1; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 249 | int i; |
| 250 | int err = 0; |
| 251 | |
Yan, Zheng | 8d08503 | 2014-04-18 22:01:38 +0800 | [diff] [blame] | 252 | spin_lock(&ci->i_ceph_lock); |
| 253 | if (ci->i_auth_cap) |
| 254 | diri_auth = ci->i_auth_cap->mds; |
| 255 | spin_unlock(&ci->i_ceph_lock); |
| 256 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 257 | mutex_lock(&ci->i_fragtree_mutex); |
Yan, Zheng | 8d08503 | 2014-04-18 22:01:38 +0800 | [diff] [blame] | 258 | if (ndist == 0 && mds == diri_auth) { |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 259 | /* no delegation info needed. */ |
| 260 | frag = __ceph_find_frag(ci, id); |
| 261 | if (!frag) |
| 262 | goto out; |
| 263 | if (frag->split_by == 0) { |
| 264 | /* tree leaf, remove */ |
| 265 | dout("fill_dirfrag removed %llx.%llx frag %x" |
| 266 | " (no ref)\n", ceph_vinop(inode), id); |
| 267 | rb_erase(&frag->node, &ci->i_fragtree); |
| 268 | kfree(frag); |
| 269 | } else { |
| 270 | /* tree branch, keep and clear */ |
| 271 | dout("fill_dirfrag cleared %llx.%llx frag %x" |
| 272 | " referral\n", ceph_vinop(inode), id); |
| 273 | frag->mds = -1; |
| 274 | frag->ndist = 0; |
| 275 | } |
| 276 | goto out; |
| 277 | } |
| 278 | |
| 279 | |
| 280 | /* find/add this frag to store mds delegation info */ |
| 281 | frag = __get_or_create_frag(ci, id); |
| 282 | if (IS_ERR(frag)) { |
| 283 | /* this is not the end of the world; we can continue |
| 284 | with bad/inaccurate delegation info */ |
| 285 | pr_err("fill_dirfrag ENOMEM on mds ref %llx.%llx fg %x\n", |
| 286 | ceph_vinop(inode), le32_to_cpu(dirinfo->frag)); |
| 287 | err = -ENOMEM; |
| 288 | goto out; |
| 289 | } |
| 290 | |
| 291 | frag->mds = mds; |
| 292 | frag->ndist = min_t(u32, ndist, CEPH_MAX_DIRFRAG_REP); |
| 293 | for (i = 0; i < frag->ndist; i++) |
| 294 | frag->dist[i] = le32_to_cpu(dirinfo->dist[i]); |
| 295 | dout("fill_dirfrag %llx.%llx frag %x ndist=%d\n", |
| 296 | ceph_vinop(inode), frag->frag, frag->ndist); |
| 297 | |
| 298 | out: |
| 299 | mutex_unlock(&ci->i_fragtree_mutex); |
| 300 | return err; |
| 301 | } |
| 302 | |
Yan, Zheng | 3e7fbe9 | 2014-04-18 16:00:30 +0800 | [diff] [blame] | 303 | static int ceph_fill_fragtree(struct inode *inode, |
| 304 | struct ceph_frag_tree_head *fragtree, |
| 305 | struct ceph_mds_reply_dirfrag *dirinfo) |
| 306 | { |
| 307 | struct ceph_inode_info *ci = ceph_inode(inode); |
| 308 | struct ceph_inode_frag *frag; |
| 309 | struct rb_node *rb_node; |
| 310 | int i; |
| 311 | u32 id, nsplits; |
| 312 | bool update = false; |
| 313 | |
| 314 | mutex_lock(&ci->i_fragtree_mutex); |
| 315 | nsplits = le32_to_cpu(fragtree->nsplits); |
| 316 | if (nsplits) { |
| 317 | i = prandom_u32() % nsplits; |
| 318 | id = le32_to_cpu(fragtree->splits[i].frag); |
| 319 | if (!__ceph_find_frag(ci, id)) |
| 320 | update = true; |
| 321 | } else if (!RB_EMPTY_ROOT(&ci->i_fragtree)) { |
| 322 | rb_node = rb_first(&ci->i_fragtree); |
| 323 | frag = rb_entry(rb_node, struct ceph_inode_frag, node); |
| 324 | if (frag->frag != ceph_frag_make(0, 0) || rb_next(rb_node)) |
| 325 | update = true; |
| 326 | } |
| 327 | if (!update && dirinfo) { |
| 328 | id = le32_to_cpu(dirinfo->frag); |
| 329 | if (id != __ceph_choose_frag(ci, id, NULL, NULL)) |
| 330 | update = true; |
| 331 | } |
| 332 | if (!update) |
| 333 | goto out_unlock; |
| 334 | |
| 335 | dout("fill_fragtree %llx.%llx\n", ceph_vinop(inode)); |
| 336 | rb_node = rb_first(&ci->i_fragtree); |
| 337 | for (i = 0; i < nsplits; i++) { |
| 338 | id = le32_to_cpu(fragtree->splits[i].frag); |
| 339 | frag = NULL; |
| 340 | while (rb_node) { |
| 341 | frag = rb_entry(rb_node, struct ceph_inode_frag, node); |
| 342 | if (ceph_frag_compare(frag->frag, id) >= 0) { |
| 343 | if (frag->frag != id) |
| 344 | frag = NULL; |
| 345 | else |
| 346 | rb_node = rb_next(rb_node); |
| 347 | break; |
| 348 | } |
| 349 | rb_node = rb_next(rb_node); |
| 350 | rb_erase(&frag->node, &ci->i_fragtree); |
| 351 | kfree(frag); |
| 352 | frag = NULL; |
| 353 | } |
| 354 | if (!frag) { |
| 355 | frag = __get_or_create_frag(ci, id); |
| 356 | if (IS_ERR(frag)) |
| 357 | continue; |
| 358 | } |
| 359 | frag->split_by = le32_to_cpu(fragtree->splits[i].by); |
| 360 | dout(" frag %x split by %d\n", frag->frag, frag->split_by); |
| 361 | } |
| 362 | while (rb_node) { |
| 363 | frag = rb_entry(rb_node, struct ceph_inode_frag, node); |
| 364 | rb_node = rb_next(rb_node); |
| 365 | rb_erase(&frag->node, &ci->i_fragtree); |
| 366 | kfree(frag); |
| 367 | } |
| 368 | out_unlock: |
| 369 | mutex_unlock(&ci->i_fragtree_mutex); |
| 370 | return 0; |
| 371 | } |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 372 | |
| 373 | /* |
| 374 | * initialize a newly allocated inode. |
| 375 | */ |
| 376 | struct inode *ceph_alloc_inode(struct super_block *sb) |
| 377 | { |
| 378 | struct ceph_inode_info *ci; |
| 379 | int i; |
| 380 | |
| 381 | ci = kmem_cache_alloc(ceph_inode_cachep, GFP_NOFS); |
| 382 | if (!ci) |
| 383 | return NULL; |
| 384 | |
| 385 | dout("alloc_inode %p\n", &ci->vfs_inode); |
| 386 | |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 387 | spin_lock_init(&ci->i_ceph_lock); |
| 388 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 389 | ci->i_version = 0; |
Yan, Zheng | 31c542a | 2014-11-14 21:41:55 +0800 | [diff] [blame] | 390 | ci->i_inline_version = 0; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 391 | ci->i_time_warp_seq = 0; |
| 392 | ci->i_ceph_flags = 0; |
Yan, Zheng | 70db4f3 | 2014-10-21 18:09:56 -0700 | [diff] [blame] | 393 | ci->i_ordered_count = 0; |
Yan, Zheng | 2f276c5 | 2013-03-13 19:44:32 +0800 | [diff] [blame] | 394 | atomic_set(&ci->i_release_count, 1); |
| 395 | atomic_set(&ci->i_complete_count, 0); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 396 | ci->i_symlink = NULL; |
| 397 | |
Sage Weil | 6c0f3af | 2010-11-16 11:14:34 -0800 | [diff] [blame] | 398 | memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout)); |
| 399 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 400 | ci->i_fragtree = RB_ROOT; |
| 401 | mutex_init(&ci->i_fragtree_mutex); |
| 402 | |
| 403 | ci->i_xattrs.blob = NULL; |
| 404 | ci->i_xattrs.prealloc_blob = NULL; |
| 405 | ci->i_xattrs.dirty = false; |
| 406 | ci->i_xattrs.index = RB_ROOT; |
| 407 | ci->i_xattrs.count = 0; |
| 408 | ci->i_xattrs.names_size = 0; |
| 409 | ci->i_xattrs.vals_size = 0; |
| 410 | ci->i_xattrs.version = 0; |
| 411 | ci->i_xattrs.index_version = 0; |
| 412 | |
| 413 | ci->i_caps = RB_ROOT; |
| 414 | ci->i_auth_cap = NULL; |
| 415 | ci->i_dirty_caps = 0; |
| 416 | ci->i_flushing_caps = 0; |
| 417 | INIT_LIST_HEAD(&ci->i_dirty_item); |
| 418 | INIT_LIST_HEAD(&ci->i_flushing_item); |
| 419 | ci->i_cap_flush_seq = 0; |
| 420 | ci->i_cap_flush_last_tid = 0; |
| 421 | memset(&ci->i_cap_flush_tid, 0, sizeof(ci->i_cap_flush_tid)); |
| 422 | init_waitqueue_head(&ci->i_cap_wq); |
| 423 | ci->i_hold_caps_min = 0; |
| 424 | ci->i_hold_caps_max = 0; |
| 425 | INIT_LIST_HEAD(&ci->i_cap_delay_list); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 426 | INIT_LIST_HEAD(&ci->i_cap_snaps); |
| 427 | ci->i_head_snapc = NULL; |
| 428 | ci->i_snap_caps = 0; |
| 429 | |
| 430 | for (i = 0; i < CEPH_FILE_MODE_NUM; i++) |
| 431 | ci->i_nr_by_mode[i] = 0; |
| 432 | |
Yan, Zheng | b0d7c22 | 2013-08-12 21:42:15 -0700 | [diff] [blame] | 433 | mutex_init(&ci->i_truncate_mutex); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 434 | ci->i_truncate_seq = 0; |
| 435 | ci->i_truncate_size = 0; |
| 436 | ci->i_truncate_pending = 0; |
| 437 | |
| 438 | ci->i_max_size = 0; |
| 439 | ci->i_reported_size = 0; |
| 440 | ci->i_wanted_max_size = 0; |
| 441 | ci->i_requested_max_size = 0; |
| 442 | |
| 443 | ci->i_pin_ref = 0; |
| 444 | ci->i_rd_ref = 0; |
| 445 | ci->i_rdcache_ref = 0; |
| 446 | ci->i_wr_ref = 0; |
Henry C Chang | d3d0720 | 2011-05-11 10:29:54 +0000 | [diff] [blame] | 447 | ci->i_wb_ref = 0; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 448 | ci->i_wrbuffer_ref = 0; |
| 449 | ci->i_wrbuffer_ref_head = 0; |
| 450 | ci->i_shared_gen = 0; |
| 451 | ci->i_rdcache_gen = 0; |
| 452 | ci->i_rdcache_revoking = 0; |
| 453 | |
| 454 | INIT_LIST_HEAD(&ci->i_unsafe_writes); |
| 455 | INIT_LIST_HEAD(&ci->i_unsafe_dirops); |
| 456 | spin_lock_init(&ci->i_unsafe_lock); |
| 457 | |
| 458 | ci->i_snap_realm = NULL; |
| 459 | INIT_LIST_HEAD(&ci->i_snap_realm_item); |
| 460 | INIT_LIST_HEAD(&ci->i_snap_flush_item); |
| 461 | |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 462 | INIT_WORK(&ci->i_wb_work, ceph_writeback_work); |
| 463 | INIT_WORK(&ci->i_pg_inv_work, ceph_invalidate_work); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 464 | |
| 465 | INIT_WORK(&ci->i_vmtruncate_work, ceph_vmtruncate_work); |
| 466 | |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 467 | ceph_fscache_inode_init(ci); |
| 468 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 469 | return &ci->vfs_inode; |
| 470 | } |
| 471 | |
Nick Piggin | fa0d7e3d | 2011-01-07 17:49:49 +1100 | [diff] [blame] | 472 | static void ceph_i_callback(struct rcu_head *head) |
| 473 | { |
| 474 | struct inode *inode = container_of(head, struct inode, i_rcu); |
| 475 | struct ceph_inode_info *ci = ceph_inode(inode); |
| 476 | |
Nick Piggin | fa0d7e3d | 2011-01-07 17:49:49 +1100 | [diff] [blame] | 477 | kmem_cache_free(ceph_inode_cachep, ci); |
| 478 | } |
| 479 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 480 | void ceph_destroy_inode(struct inode *inode) |
| 481 | { |
| 482 | struct ceph_inode_info *ci = ceph_inode(inode); |
| 483 | struct ceph_inode_frag *frag; |
| 484 | struct rb_node *n; |
| 485 | |
| 486 | dout("destroy_inode %p ino %llx.%llx\n", inode, ceph_vinop(inode)); |
| 487 | |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 488 | ceph_fscache_unregister_inode_cookie(ci); |
| 489 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 490 | ceph_queue_caps_release(inode); |
| 491 | |
Sage Weil | 8b218b8 | 2010-03-09 12:59:08 -0800 | [diff] [blame] | 492 | /* |
| 493 | * we may still have a snap_realm reference if there are stray |
Yan, Zheng | d9df278 | 2014-04-18 09:57:11 +0800 | [diff] [blame] | 494 | * caps in i_snap_caps. |
Sage Weil | 8b218b8 | 2010-03-09 12:59:08 -0800 | [diff] [blame] | 495 | */ |
| 496 | if (ci->i_snap_realm) { |
| 497 | struct ceph_mds_client *mdsc = |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 498 | ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; |
Sage Weil | 8b218b8 | 2010-03-09 12:59:08 -0800 | [diff] [blame] | 499 | struct ceph_snap_realm *realm = ci->i_snap_realm; |
| 500 | |
| 501 | dout(" dropping residual ref to snap realm %p\n", realm); |
| 502 | spin_lock(&realm->inodes_with_caps_lock); |
| 503 | list_del_init(&ci->i_snap_realm_item); |
| 504 | spin_unlock(&realm->inodes_with_caps_lock); |
| 505 | ceph_put_snap_realm(mdsc, realm); |
| 506 | } |
| 507 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 508 | kfree(ci->i_symlink); |
| 509 | while ((n = rb_first(&ci->i_fragtree)) != NULL) { |
| 510 | frag = rb_entry(n, struct ceph_inode_frag, node); |
| 511 | rb_erase(n, &ci->i_fragtree); |
| 512 | kfree(frag); |
| 513 | } |
| 514 | |
| 515 | __ceph_destroy_xattrs(ci); |
Sage Weil | b6c1d5b | 2009-12-07 12:17:17 -0800 | [diff] [blame] | 516 | if (ci->i_xattrs.blob) |
| 517 | ceph_buffer_put(ci->i_xattrs.blob); |
| 518 | if (ci->i_xattrs.prealloc_blob) |
| 519 | ceph_buffer_put(ci->i_xattrs.prealloc_blob); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 520 | |
Nick Piggin | fa0d7e3d | 2011-01-07 17:49:49 +1100 | [diff] [blame] | 521 | call_rcu(&inode->i_rcu, ceph_i_callback); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 522 | } |
| 523 | |
Yan, Zheng | 9f12bd1 | 2013-09-20 19:55:31 +0800 | [diff] [blame] | 524 | int ceph_drop_inode(struct inode *inode) |
| 525 | { |
| 526 | /* |
| 527 | * Positve dentry and corresponding inode are always accompanied |
| 528 | * in MDS reply. So no need to keep inode in the cache after |
| 529 | * dropping all its aliases. |
| 530 | */ |
| 531 | return 1; |
| 532 | } |
| 533 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 534 | /* |
| 535 | * Helpers to fill in size, ctime, mtime, and atime. We have to be |
| 536 | * careful because either the client or MDS may have more up to date |
| 537 | * info, depending on which capabilities are held, and whether |
| 538 | * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime |
| 539 | * and size are monotonically increasing, except when utimes() or |
| 540 | * truncate() increments the corresponding _seq values.) |
| 541 | */ |
| 542 | int ceph_fill_file_size(struct inode *inode, int issued, |
| 543 | u32 truncate_seq, u64 truncate_size, u64 size) |
| 544 | { |
| 545 | struct ceph_inode_info *ci = ceph_inode(inode); |
| 546 | int queue_trunc = 0; |
| 547 | |
| 548 | if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) > 0 || |
| 549 | (truncate_seq == ci->i_truncate_seq && size > inode->i_size)) { |
| 550 | dout("size %lld -> %llu\n", inode->i_size, size); |
| 551 | inode->i_size = size; |
| 552 | inode->i_blocks = (size + (1<<9) - 1) >> 9; |
| 553 | ci->i_reported_size = size; |
| 554 | if (truncate_seq != ci->i_truncate_seq) { |
| 555 | dout("truncate_seq %u -> %u\n", |
| 556 | ci->i_truncate_seq, truncate_seq); |
| 557 | ci->i_truncate_seq = truncate_seq; |
Yan, Zheng | b0d7c22 | 2013-08-12 21:42:15 -0700 | [diff] [blame] | 558 | |
| 559 | /* the MDS should have revoked these caps */ |
| 560 | WARN_ON_ONCE(issued & (CEPH_CAP_FILE_EXCL | |
| 561 | CEPH_CAP_FILE_RD | |
| 562 | CEPH_CAP_FILE_WR | |
| 563 | CEPH_CAP_FILE_LAZYIO)); |
Yehuda Sadeh | 3d497d8 | 2010-02-09 11:08:40 -0800 | [diff] [blame] | 564 | /* |
| 565 | * If we hold relevant caps, or in the case where we're |
| 566 | * not the only client referencing this file and we |
| 567 | * don't hold those caps, then we need to check whether |
| 568 | * the file is either opened or mmaped |
| 569 | */ |
Yan, Zheng | b0d7c22 | 2013-08-12 21:42:15 -0700 | [diff] [blame] | 570 | if ((issued & (CEPH_CAP_FILE_CACHE| |
| 571 | CEPH_CAP_FILE_BUFFER)) || |
Yehuda Sadeh | 3d497d8 | 2010-02-09 11:08:40 -0800 | [diff] [blame] | 572 | mapping_mapped(inode->i_mapping) || |
| 573 | __ceph_caps_file_wanted(ci)) { |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 574 | ci->i_truncate_pending++; |
| 575 | queue_trunc = 1; |
| 576 | } |
| 577 | } |
| 578 | } |
| 579 | if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) >= 0 && |
| 580 | ci->i_truncate_size != truncate_size) { |
| 581 | dout("truncate_size %lld -> %llu\n", ci->i_truncate_size, |
| 582 | truncate_size); |
| 583 | ci->i_truncate_size = truncate_size; |
| 584 | } |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 585 | |
| 586 | if (queue_trunc) |
| 587 | ceph_fscache_invalidate(inode); |
| 588 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 589 | return queue_trunc; |
| 590 | } |
| 591 | |
| 592 | void ceph_fill_file_time(struct inode *inode, int issued, |
| 593 | u64 time_warp_seq, struct timespec *ctime, |
| 594 | struct timespec *mtime, struct timespec *atime) |
| 595 | { |
| 596 | struct ceph_inode_info *ci = ceph_inode(inode); |
| 597 | int warn = 0; |
| 598 | |
| 599 | if (issued & (CEPH_CAP_FILE_EXCL| |
| 600 | CEPH_CAP_FILE_WR| |
Sage Weil | d8672d6 | 2010-11-08 09:24:34 -0800 | [diff] [blame] | 601 | CEPH_CAP_FILE_BUFFER| |
| 602 | CEPH_CAP_AUTH_EXCL| |
| 603 | CEPH_CAP_XATTR_EXCL)) { |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 604 | if (timespec_compare(ctime, &inode->i_ctime) > 0) { |
| 605 | dout("ctime %ld.%09ld -> %ld.%09ld inc w/ cap\n", |
| 606 | inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, |
| 607 | ctime->tv_sec, ctime->tv_nsec); |
| 608 | inode->i_ctime = *ctime; |
| 609 | } |
| 610 | if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) { |
| 611 | /* the MDS did a utimes() */ |
| 612 | dout("mtime %ld.%09ld -> %ld.%09ld " |
| 613 | "tw %d -> %d\n", |
| 614 | inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, |
| 615 | mtime->tv_sec, mtime->tv_nsec, |
| 616 | ci->i_time_warp_seq, (int)time_warp_seq); |
| 617 | |
| 618 | inode->i_mtime = *mtime; |
| 619 | inode->i_atime = *atime; |
| 620 | ci->i_time_warp_seq = time_warp_seq; |
| 621 | } else if (time_warp_seq == ci->i_time_warp_seq) { |
| 622 | /* nobody did utimes(); take the max */ |
| 623 | if (timespec_compare(mtime, &inode->i_mtime) > 0) { |
| 624 | dout("mtime %ld.%09ld -> %ld.%09ld inc\n", |
| 625 | inode->i_mtime.tv_sec, |
| 626 | inode->i_mtime.tv_nsec, |
| 627 | mtime->tv_sec, mtime->tv_nsec); |
| 628 | inode->i_mtime = *mtime; |
| 629 | } |
| 630 | if (timespec_compare(atime, &inode->i_atime) > 0) { |
| 631 | dout("atime %ld.%09ld -> %ld.%09ld inc\n", |
| 632 | inode->i_atime.tv_sec, |
| 633 | inode->i_atime.tv_nsec, |
| 634 | atime->tv_sec, atime->tv_nsec); |
| 635 | inode->i_atime = *atime; |
| 636 | } |
| 637 | } else if (issued & CEPH_CAP_FILE_EXCL) { |
| 638 | /* we did a utimes(); ignore mds values */ |
| 639 | } else { |
| 640 | warn = 1; |
| 641 | } |
| 642 | } else { |
Sage Weil | d8672d6 | 2010-11-08 09:24:34 -0800 | [diff] [blame] | 643 | /* we have no write|excl caps; whatever the MDS says is true */ |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 644 | if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) { |
| 645 | inode->i_ctime = *ctime; |
| 646 | inode->i_mtime = *mtime; |
| 647 | inode->i_atime = *atime; |
| 648 | ci->i_time_warp_seq = time_warp_seq; |
| 649 | } else { |
| 650 | warn = 1; |
| 651 | } |
| 652 | } |
| 653 | if (warn) /* time_warp_seq shouldn't go backwards */ |
| 654 | dout("%p mds time_warp_seq %llu < %u\n", |
| 655 | inode, time_warp_seq, ci->i_time_warp_seq); |
| 656 | } |
| 657 | |
| 658 | /* |
| 659 | * Populate an inode based on info from mds. May be called on new or |
| 660 | * existing inodes. |
| 661 | */ |
Yan, Zheng | 01deead | 2014-11-14 21:56:29 +0800 | [diff] [blame^] | 662 | static int fill_inode(struct inode *inode, struct page *locked_page, |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 663 | struct ceph_mds_reply_info_in *iinfo, |
| 664 | struct ceph_mds_reply_dirfrag *dirinfo, |
| 665 | struct ceph_mds_session *session, |
| 666 | unsigned long ttl_from, int cap_fmode, |
| 667 | struct ceph_cap_reservation *caps_reservation) |
| 668 | { |
Yan, Zheng | d9df278 | 2014-04-18 09:57:11 +0800 | [diff] [blame] | 669 | struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 670 | struct ceph_mds_reply_inode *info = iinfo->in; |
| 671 | struct ceph_inode_info *ci = ceph_inode(inode); |
Yan, Zheng | f98a128 | 2014-04-17 08:55:50 +0800 | [diff] [blame] | 672 | int issued = 0, implemented, new_issued; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 673 | struct timespec mtime, atime, ctime; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 674 | struct ceph_buffer *xattr_blob = NULL; |
Yan, Zheng | d9df278 | 2014-04-18 09:57:11 +0800 | [diff] [blame] | 675 | struct ceph_cap *new_cap = NULL; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 676 | int err = 0; |
Yan, Zheng | d9df278 | 2014-04-18 09:57:11 +0800 | [diff] [blame] | 677 | bool wake = false; |
Yan, Zheng | f98a128 | 2014-04-17 08:55:50 +0800 | [diff] [blame] | 678 | bool queue_trunc = false; |
| 679 | bool new_version = false; |
Yan, Zheng | 31c542a | 2014-11-14 21:41:55 +0800 | [diff] [blame] | 680 | bool fill_inline = false; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 681 | |
| 682 | dout("fill_inode %p ino %llx.%llx v %llu had %llu\n", |
| 683 | inode, ceph_vinop(inode), le64_to_cpu(info->version), |
| 684 | ci->i_version); |
| 685 | |
Yan, Zheng | d9df278 | 2014-04-18 09:57:11 +0800 | [diff] [blame] | 686 | /* prealloc new cap struct */ |
| 687 | if (info->cap.caps && ceph_snap(inode) == CEPH_NOSNAP) |
| 688 | new_cap = ceph_get_cap(mdsc, caps_reservation); |
| 689 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 690 | /* |
| 691 | * prealloc xattr data, if it looks like we'll need it. only |
| 692 | * if len > 4 (meaning there are actually xattrs; the first 4 |
| 693 | * bytes are the xattr count). |
| 694 | */ |
| 695 | if (iinfo->xattr_len > 4) { |
Sage Weil | b6c1d5b | 2009-12-07 12:17:17 -0800 | [diff] [blame] | 696 | xattr_blob = ceph_buffer_new(iinfo->xattr_len, GFP_NOFS); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 697 | if (!xattr_blob) |
| 698 | pr_err("fill_inode ENOMEM xattr blob %d bytes\n", |
| 699 | iinfo->xattr_len); |
| 700 | } |
| 701 | |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 702 | spin_lock(&ci->i_ceph_lock); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 703 | |
| 704 | /* |
| 705 | * provided version will be odd if inode value is projected, |
Sage Weil | 8bd59e0 | 2010-11-08 09:23:12 -0800 | [diff] [blame] | 706 | * even if stable. skip the update if we have newer stable |
| 707 | * info (ours>=theirs, e.g. due to racing mds replies), unless |
| 708 | * we are getting projected (unstable) info (in which case the |
| 709 | * version is odd, and we want ours>theirs). |
| 710 | * us them |
| 711 | * 2 2 skip |
| 712 | * 3 2 skip |
| 713 | * 3 3 update |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 714 | */ |
Yan, Zheng | f98a128 | 2014-04-17 08:55:50 +0800 | [diff] [blame] | 715 | if (ci->i_version == 0 || |
| 716 | ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && |
| 717 | le64_to_cpu(info->version) > (ci->i_version & ~1))) |
| 718 | new_version = true; |
| 719 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 720 | issued = __ceph_caps_issued(ci, &implemented); |
| 721 | issued |= implemented | __ceph_caps_dirty(ci); |
Yan, Zheng | f98a128 | 2014-04-17 08:55:50 +0800 | [diff] [blame] | 722 | new_issued = ~issued & le32_to_cpu(info->cap.caps); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 723 | |
| 724 | /* update inode */ |
| 725 | ci->i_version = le64_to_cpu(info->version); |
| 726 | inode->i_version++; |
| 727 | inode->i_rdev = le32_to_cpu(info->rdev); |
Yan, Zheng | f98a128 | 2014-04-17 08:55:50 +0800 | [diff] [blame] | 728 | inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 729 | |
Yan, Zheng | f98a128 | 2014-04-17 08:55:50 +0800 | [diff] [blame] | 730 | if ((new_version || (new_issued & CEPH_CAP_AUTH_SHARED)) && |
| 731 | (issued & CEPH_CAP_AUTH_EXCL) == 0) { |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 732 | inode->i_mode = le32_to_cpu(info->mode); |
Eric W. Biederman | ab871b9 | 2013-01-31 03:40:12 -0800 | [diff] [blame] | 733 | inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid)); |
| 734 | inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid)); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 735 | dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode, |
Eric W. Biederman | bd2bae6 | 2013-01-31 04:05:39 -0800 | [diff] [blame] | 736 | from_kuid(&init_user_ns, inode->i_uid), |
| 737 | from_kgid(&init_user_ns, inode->i_gid)); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 738 | } |
| 739 | |
Yan, Zheng | f98a128 | 2014-04-17 08:55:50 +0800 | [diff] [blame] | 740 | if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) && |
| 741 | (issued & CEPH_CAP_LINK_EXCL) == 0) |
Miklos Szeredi | bfe8684 | 2011-10-28 14:13:29 +0200 | [diff] [blame] | 742 | set_nlink(inode, le32_to_cpu(info->nlink)); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 743 | |
Yan, Zheng | f98a128 | 2014-04-17 08:55:50 +0800 | [diff] [blame] | 744 | if (new_version || (new_issued & CEPH_CAP_ANY_RD)) { |
| 745 | /* be careful with mtime, atime, size */ |
| 746 | ceph_decode_timespec(&atime, &info->atime); |
| 747 | ceph_decode_timespec(&mtime, &info->mtime); |
| 748 | ceph_decode_timespec(&ctime, &info->ctime); |
| 749 | ceph_fill_file_time(inode, issued, |
| 750 | le32_to_cpu(info->time_warp_seq), |
| 751 | &ctime, &mtime, &atime); |
| 752 | } |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 753 | |
Yan, Zheng | f98a128 | 2014-04-17 08:55:50 +0800 | [diff] [blame] | 754 | if (new_version || |
| 755 | (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) { |
| 756 | ci->i_layout = info->layout; |
| 757 | queue_trunc = ceph_fill_file_size(inode, issued, |
| 758 | le32_to_cpu(info->truncate_seq), |
| 759 | le64_to_cpu(info->truncate_size), |
| 760 | le64_to_cpu(info->size)); |
| 761 | /* only update max_size on auth cap */ |
| 762 | if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && |
| 763 | ci->i_max_size != le64_to_cpu(info->max_size)) { |
| 764 | dout("max_size %lld -> %llu\n", ci->i_max_size, |
| 765 | le64_to_cpu(info->max_size)); |
| 766 | ci->i_max_size = le64_to_cpu(info->max_size); |
| 767 | } |
| 768 | } |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 769 | |
| 770 | /* xattrs */ |
| 771 | /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */ |
Yan, Zheng | 508b32d | 2014-09-16 21:46:17 +0800 | [diff] [blame] | 772 | if ((ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) && |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 773 | le64_to_cpu(info->xattr_version) > ci->i_xattrs.version) { |
| 774 | if (ci->i_xattrs.blob) |
| 775 | ceph_buffer_put(ci->i_xattrs.blob); |
| 776 | ci->i_xattrs.blob = xattr_blob; |
| 777 | if (xattr_blob) |
| 778 | memcpy(ci->i_xattrs.blob->vec.iov_base, |
| 779 | iinfo->xattr_data, iinfo->xattr_len); |
| 780 | ci->i_xattrs.version = le64_to_cpu(info->xattr_version); |
Guangliang Zhao | 7221fe4 | 2013-11-11 15:18:03 +0800 | [diff] [blame] | 781 | ceph_forget_all_cached_acls(inode); |
Sage Weil | a6424e4 | 2010-04-29 09:28:11 -0700 | [diff] [blame] | 782 | xattr_blob = NULL; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 783 | } |
| 784 | |
| 785 | inode->i_mapping->a_ops = &ceph_aops; |
| 786 | inode->i_mapping->backing_dev_info = |
Cheng Renquan | 640ef79 | 2010-03-26 17:40:33 +0800 | [diff] [blame] | 787 | &ceph_sb_to_client(inode->i_sb)->backing_dev_info; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 788 | |
| 789 | switch (inode->i_mode & S_IFMT) { |
| 790 | case S_IFIFO: |
| 791 | case S_IFBLK: |
| 792 | case S_IFCHR: |
| 793 | case S_IFSOCK: |
| 794 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
| 795 | inode->i_op = &ceph_file_iops; |
| 796 | break; |
| 797 | case S_IFREG: |
| 798 | inode->i_op = &ceph_file_iops; |
| 799 | inode->i_fop = &ceph_file_fops; |
| 800 | break; |
| 801 | case S_IFLNK: |
| 802 | inode->i_op = &ceph_symlink_iops; |
| 803 | if (!ci->i_symlink) { |
Xi Wang | 810339ec | 2012-02-03 09:55:36 -0500 | [diff] [blame] | 804 | u32 symlen = iinfo->symlink_len; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 805 | char *sym; |
| 806 | |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 807 | spin_unlock(&ci->i_ceph_lock); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 808 | |
Xi Wang | 810339ec | 2012-02-03 09:55:36 -0500 | [diff] [blame] | 809 | err = -EINVAL; |
| 810 | if (WARN_ON(symlen != inode->i_size)) |
| 811 | goto out; |
| 812 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 813 | err = -ENOMEM; |
Xi Wang | 810339ec | 2012-02-03 09:55:36 -0500 | [diff] [blame] | 814 | sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 815 | if (!sym) |
| 816 | goto out; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 817 | |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 818 | spin_lock(&ci->i_ceph_lock); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 819 | if (!ci->i_symlink) |
| 820 | ci->i_symlink = sym; |
| 821 | else |
| 822 | kfree(sym); /* lost a race */ |
| 823 | } |
| 824 | break; |
| 825 | case S_IFDIR: |
| 826 | inode->i_op = &ceph_dir_iops; |
| 827 | inode->i_fop = &ceph_dir_fops; |
| 828 | |
Sage Weil | 14303d2 | 2010-12-14 17:37:52 -0800 | [diff] [blame] | 829 | ci->i_dir_layout = iinfo->dir_layout; |
| 830 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 831 | ci->i_files = le64_to_cpu(info->files); |
| 832 | ci->i_subdirs = le64_to_cpu(info->subdirs); |
| 833 | ci->i_rbytes = le64_to_cpu(info->rbytes); |
| 834 | ci->i_rfiles = le64_to_cpu(info->rfiles); |
| 835 | ci->i_rsubdirs = le64_to_cpu(info->rsubdirs); |
| 836 | ceph_decode_timespec(&ci->i_rctime, &info->rctime); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 837 | break; |
| 838 | default: |
| 839 | pr_err("fill_inode %llx.%llx BAD mode 0%o\n", |
| 840 | ceph_vinop(inode), inode->i_mode); |
| 841 | } |
| 842 | |
Yan, Zheng | a8673d6 | 2013-02-18 16:38:14 +0800 | [diff] [blame] | 843 | /* set dir completion flag? */ |
| 844 | if (S_ISDIR(inode->i_mode) && |
| 845 | ci->i_files == 0 && ci->i_subdirs == 0 && |
| 846 | ceph_snap(inode) == CEPH_NOSNAP && |
| 847 | (le32_to_cpu(info->cap.caps) & CEPH_CAP_FILE_SHARED) && |
| 848 | (issued & CEPH_CAP_FILE_EXCL) == 0 && |
Yan, Zheng | 2f276c5 | 2013-03-13 19:44:32 +0800 | [diff] [blame] | 849 | !__ceph_dir_is_complete(ci)) { |
Yan, Zheng | a8673d6 | 2013-02-18 16:38:14 +0800 | [diff] [blame] | 850 | dout(" marking %p complete (empty)\n", inode); |
Yan, Zheng | 70db4f3 | 2014-10-21 18:09:56 -0700 | [diff] [blame] | 851 | __ceph_dir_set_complete(ci, atomic_read(&ci->i_release_count), |
| 852 | ci->i_ordered_count); |
Yan, Zheng | a8673d6 | 2013-02-18 16:38:14 +0800 | [diff] [blame] | 853 | } |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 854 | |
| 855 | /* were we issued a capability? */ |
| 856 | if (info->cap.caps) { |
| 857 | if (ceph_snap(inode) == CEPH_NOSNAP) { |
| 858 | ceph_add_cap(inode, session, |
| 859 | le64_to_cpu(info->cap.cap_id), |
| 860 | cap_fmode, |
| 861 | le32_to_cpu(info->cap.caps), |
| 862 | le32_to_cpu(info->cap.wanted), |
| 863 | le32_to_cpu(info->cap.seq), |
| 864 | le32_to_cpu(info->cap.mseq), |
| 865 | le64_to_cpu(info->cap.realm), |
Yan, Zheng | d9df278 | 2014-04-18 09:57:11 +0800 | [diff] [blame] | 866 | info->cap.flags, &new_cap); |
| 867 | wake = true; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 868 | } else { |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 869 | dout(" %p got snap_caps %s\n", inode, |
| 870 | ceph_cap_string(le32_to_cpu(info->cap.caps))); |
| 871 | ci->i_snap_caps |= le32_to_cpu(info->cap.caps); |
| 872 | if (cap_fmode >= 0) |
| 873 | __ceph_get_fmode(ci, cap_fmode); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 874 | } |
Sage Weil | 04d000e | 2010-05-07 11:26:34 -0700 | [diff] [blame] | 875 | } else if (cap_fmode >= 0) { |
Fabian Frederick | f3ae1b9 | 2014-06-06 14:35:37 -0700 | [diff] [blame] | 876 | pr_warn("mds issued no caps on %llx.%llx\n", |
Sage Weil | 04d000e | 2010-05-07 11:26:34 -0700 | [diff] [blame] | 877 | ceph_vinop(inode)); |
| 878 | __ceph_get_fmode(ci, cap_fmode); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 879 | } |
Yan, Zheng | 31c542a | 2014-11-14 21:41:55 +0800 | [diff] [blame] | 880 | |
| 881 | if (iinfo->inline_version > 0 && |
| 882 | iinfo->inline_version >= ci->i_inline_version) { |
| 883 | int cache_caps = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO; |
| 884 | ci->i_inline_version = iinfo->inline_version; |
| 885 | if (ci->i_inline_version != CEPH_INLINE_NONE && |
Yan, Zheng | 01deead | 2014-11-14 21:56:29 +0800 | [diff] [blame^] | 886 | (locked_page || |
| 887 | (le32_to_cpu(info->cap.caps) & cache_caps))) |
Yan, Zheng | 31c542a | 2014-11-14 21:41:55 +0800 | [diff] [blame] | 888 | fill_inline = true; |
| 889 | } |
| 890 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 891 | spin_unlock(&ci->i_ceph_lock); |
| 892 | |
Yan, Zheng | 31c542a | 2014-11-14 21:41:55 +0800 | [diff] [blame] | 893 | if (fill_inline) |
Yan, Zheng | 01deead | 2014-11-14 21:56:29 +0800 | [diff] [blame^] | 894 | ceph_fill_inline_data(inode, locked_page, |
Yan, Zheng | 31c542a | 2014-11-14 21:41:55 +0800 | [diff] [blame] | 895 | iinfo->inline_data, iinfo->inline_len); |
| 896 | |
Yan, Zheng | d9df278 | 2014-04-18 09:57:11 +0800 | [diff] [blame] | 897 | if (wake) |
| 898 | wake_up_all(&ci->i_cap_wq); |
| 899 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 900 | /* queue truncate if we saw i_size decrease */ |
| 901 | if (queue_trunc) |
| 902 | ceph_queue_vmtruncate(inode); |
| 903 | |
| 904 | /* populate frag tree */ |
Yan, Zheng | 3e7fbe9 | 2014-04-18 16:00:30 +0800 | [diff] [blame] | 905 | if (S_ISDIR(inode->i_mode)) |
| 906 | ceph_fill_fragtree(inode, &info->fragtree, dirinfo); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 907 | |
| 908 | /* update delegation info? */ |
| 909 | if (dirinfo) |
| 910 | ceph_fill_dirfrag(inode, dirinfo); |
| 911 | |
| 912 | err = 0; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 913 | out: |
Yan, Zheng | d9df278 | 2014-04-18 09:57:11 +0800 | [diff] [blame] | 914 | if (new_cap) |
| 915 | ceph_put_cap(mdsc, new_cap); |
Sage Weil | b6c1d5b | 2009-12-07 12:17:17 -0800 | [diff] [blame] | 916 | if (xattr_blob) |
| 917 | ceph_buffer_put(xattr_blob); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 918 | return err; |
| 919 | } |
| 920 | |
| 921 | /* |
| 922 | * caller should hold session s_mutex. |
| 923 | */ |
| 924 | static void update_dentry_lease(struct dentry *dentry, |
| 925 | struct ceph_mds_reply_lease *lease, |
| 926 | struct ceph_mds_session *session, |
| 927 | unsigned long from_time) |
| 928 | { |
| 929 | struct ceph_dentry_info *di = ceph_dentry(dentry); |
| 930 | long unsigned duration = le32_to_cpu(lease->duration_ms); |
| 931 | long unsigned ttl = from_time + (duration * HZ) / 1000; |
| 932 | long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000; |
| 933 | struct inode *dir; |
| 934 | |
| 935 | /* only track leases on regular dentries */ |
| 936 | if (dentry->d_op != &ceph_dentry_ops) |
| 937 | return; |
| 938 | |
| 939 | spin_lock(&dentry->d_lock); |
Sage Weil | 2f90b85 | 2011-07-26 11:28:25 -0700 | [diff] [blame] | 940 | dout("update_dentry_lease %p duration %lu ms ttl %lu\n", |
| 941 | dentry, duration, ttl); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 942 | |
| 943 | /* make lease_rdcache_gen match directory */ |
| 944 | dir = dentry->d_parent->d_inode; |
| 945 | di->lease_shared_gen = ceph_inode(dir)->i_shared_gen; |
| 946 | |
Sage Weil | 2f90b85 | 2011-07-26 11:28:25 -0700 | [diff] [blame] | 947 | if (duration == 0) |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 948 | goto out_unlock; |
| 949 | |
| 950 | if (di->lease_gen == session->s_cap_gen && |
| 951 | time_before(ttl, dentry->d_time)) |
| 952 | goto out_unlock; /* we already have a newer lease. */ |
| 953 | |
| 954 | if (di->lease_session && di->lease_session != session) |
| 955 | goto out_unlock; |
| 956 | |
| 957 | ceph_dentry_lru_touch(dentry); |
| 958 | |
| 959 | if (!di->lease_session) |
| 960 | di->lease_session = ceph_get_mds_session(session); |
| 961 | di->lease_gen = session->s_cap_gen; |
| 962 | di->lease_seq = le32_to_cpu(lease->seq); |
| 963 | di->lease_renew_after = half_ttl; |
| 964 | di->lease_renew_from = 0; |
| 965 | dentry->d_time = ttl; |
| 966 | out_unlock: |
| 967 | spin_unlock(&dentry->d_lock); |
| 968 | return; |
| 969 | } |
| 970 | |
| 971 | /* |
Sage Weil | 1cd3935 | 2010-05-03 22:08:02 -0700 | [diff] [blame] | 972 | * splice a dentry to an inode. |
| 973 | * caller must hold directory i_mutex for this to be safe. |
| 974 | * |
| 975 | * we will only rehash the resulting dentry if @prehash is |
| 976 | * true; @prehash will be set to false (for the benefit of |
| 977 | * the caller) if we fail. |
| 978 | */ |
| 979 | static struct dentry *splice_dentry(struct dentry *dn, struct inode *in, |
Yan, Zheng | 0a8a70f | 2014-04-14 13:13:02 +0800 | [diff] [blame] | 980 | bool *prehash) |
Sage Weil | 1cd3935 | 2010-05-03 22:08:02 -0700 | [diff] [blame] | 981 | { |
| 982 | struct dentry *realdn; |
| 983 | |
| 984 | BUG_ON(dn->d_inode); |
| 985 | |
| 986 | /* dn must be unhashed */ |
| 987 | if (!d_unhashed(dn)) |
| 988 | d_drop(dn); |
| 989 | realdn = d_materialise_unique(dn, in); |
| 990 | if (IS_ERR(realdn)) { |
Sage Weil | d69ed05 | 2010-06-21 10:38:14 -0700 | [diff] [blame] | 991 | pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n", |
| 992 | PTR_ERR(realdn), dn, in, ceph_vinop(in)); |
Sage Weil | 1cd3935 | 2010-05-03 22:08:02 -0700 | [diff] [blame] | 993 | if (prehash) |
| 994 | *prehash = false; /* don't rehash on error */ |
| 995 | dn = realdn; /* note realdn contains the error */ |
| 996 | goto out; |
| 997 | } else if (realdn) { |
| 998 | dout("dn %p (%d) spliced with %p (%d) " |
| 999 | "inode %p ino %llx.%llx\n", |
Al Viro | 84d08fa | 2013-07-05 18:59:33 +0400 | [diff] [blame] | 1000 | dn, d_count(dn), |
| 1001 | realdn, d_count(realdn), |
Sage Weil | 1cd3935 | 2010-05-03 22:08:02 -0700 | [diff] [blame] | 1002 | realdn->d_inode, ceph_vinop(realdn->d_inode)); |
| 1003 | dput(dn); |
| 1004 | dn = realdn; |
| 1005 | } else { |
| 1006 | BUG_ON(!ceph_dentry(dn)); |
| 1007 | dout("dn %p attached to %p ino %llx.%llx\n", |
| 1008 | dn, dn->d_inode, ceph_vinop(dn->d_inode)); |
| 1009 | } |
| 1010 | if ((!prehash || *prehash) && d_unhashed(dn)) |
| 1011 | d_rehash(dn); |
Sage Weil | 1cd3935 | 2010-05-03 22:08:02 -0700 | [diff] [blame] | 1012 | out: |
| 1013 | return dn; |
| 1014 | } |
| 1015 | |
| 1016 | /* |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1017 | * Incorporate results into the local cache. This is either just |
| 1018 | * one inode, or a directory, dentry, and possibly linked-to inode (e.g., |
| 1019 | * after a lookup). |
| 1020 | * |
| 1021 | * A reply may contain |
| 1022 | * a directory inode along with a dentry. |
| 1023 | * and/or a target inode |
| 1024 | * |
| 1025 | * Called with snap_rwsem (read). |
| 1026 | */ |
| 1027 | int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, |
| 1028 | struct ceph_mds_session *session) |
| 1029 | { |
| 1030 | struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; |
| 1031 | struct inode *in = NULL; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1032 | struct ceph_vino vino; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 1033 | struct ceph_fs_client *fsc = ceph_sb_to_client(sb); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1034 | int err = 0; |
| 1035 | |
| 1036 | dout("fill_trace %p is_dentry %d is_target %d\n", req, |
| 1037 | rinfo->head->is_dentry, rinfo->head->is_target); |
| 1038 | |
| 1039 | #if 0 |
| 1040 | /* |
| 1041 | * Debugging hook: |
| 1042 | * |
| 1043 | * If we resend completed ops to a recovering mds, we get no |
| 1044 | * trace. Since that is very rare, pretend this is the case |
| 1045 | * to ensure the 'no trace' handlers in the callers behave. |
| 1046 | * |
| 1047 | * Fill in inodes unconditionally to avoid breaking cap |
| 1048 | * invariants. |
| 1049 | */ |
| 1050 | if (rinfo->head->op & CEPH_MDS_OP_WRITE) { |
| 1051 | pr_info("fill_trace faking empty trace on %lld %s\n", |
| 1052 | req->r_tid, ceph_mds_op_name(rinfo->head->op)); |
| 1053 | if (rinfo->head->is_dentry) { |
| 1054 | rinfo->head->is_dentry = 0; |
| 1055 | err = fill_inode(req->r_locked_dir, |
| 1056 | &rinfo->diri, rinfo->dirfrag, |
| 1057 | session, req->r_request_started, -1); |
| 1058 | } |
| 1059 | if (rinfo->head->is_target) { |
| 1060 | rinfo->head->is_target = 0; |
| 1061 | ininfo = rinfo->targeti.in; |
| 1062 | vino.ino = le64_to_cpu(ininfo->ino); |
| 1063 | vino.snap = le64_to_cpu(ininfo->snapid); |
| 1064 | in = ceph_get_inode(sb, vino); |
| 1065 | err = fill_inode(in, &rinfo->targeti, NULL, |
| 1066 | session, req->r_request_started, |
| 1067 | req->r_fmode); |
| 1068 | iput(in); |
| 1069 | } |
| 1070 | } |
| 1071 | #endif |
| 1072 | |
| 1073 | if (!rinfo->head->is_target && !rinfo->head->is_dentry) { |
| 1074 | dout("fill_trace reply is empty!\n"); |
Sage Weil | 167c9e3 | 2010-05-14 10:02:57 -0700 | [diff] [blame] | 1075 | if (rinfo->head->result == 0 && req->r_locked_dir) |
| 1076 | ceph_invalidate_dir_request(req); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1077 | return 0; |
| 1078 | } |
| 1079 | |
| 1080 | if (rinfo->head->is_dentry) { |
Sage Weil | 5b1daec | 2010-01-25 11:33:08 -0800 | [diff] [blame] | 1081 | struct inode *dir = req->r_locked_dir; |
| 1082 | |
Sage Weil | 6c5e50f | 2012-08-21 15:55:25 -0700 | [diff] [blame] | 1083 | if (dir) { |
Yan, Zheng | 01deead | 2014-11-14 21:56:29 +0800 | [diff] [blame^] | 1084 | err = fill_inode(dir, NULL, |
| 1085 | &rinfo->diri, rinfo->dirfrag, |
Sage Weil | 6c5e50f | 2012-08-21 15:55:25 -0700 | [diff] [blame] | 1086 | session, req->r_request_started, -1, |
| 1087 | &req->r_caps_reservation); |
| 1088 | if (err < 0) |
Yan, Zheng | 19913b4 | 2014-03-06 16:40:32 +0800 | [diff] [blame] | 1089 | goto done; |
Sage Weil | 6c5e50f | 2012-08-21 15:55:25 -0700 | [diff] [blame] | 1090 | } else { |
| 1091 | WARN_ON_ONCE(1); |
| 1092 | } |
Yan, Zheng | 19913b4 | 2014-03-06 16:40:32 +0800 | [diff] [blame] | 1093 | |
| 1094 | if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME) { |
| 1095 | struct qstr dname; |
| 1096 | struct dentry *dn, *parent; |
| 1097 | |
| 1098 | BUG_ON(!rinfo->head->is_target); |
| 1099 | BUG_ON(req->r_dentry); |
| 1100 | |
| 1101 | parent = d_find_any_alias(dir); |
| 1102 | BUG_ON(!parent); |
| 1103 | |
| 1104 | dname.name = rinfo->dname; |
| 1105 | dname.len = rinfo->dname_len; |
| 1106 | dname.hash = full_name_hash(dname.name, dname.len); |
| 1107 | vino.ino = le64_to_cpu(rinfo->targeti.in->ino); |
| 1108 | vino.snap = le64_to_cpu(rinfo->targeti.in->snapid); |
| 1109 | retry_lookup: |
| 1110 | dn = d_lookup(parent, &dname); |
| 1111 | dout("d_lookup on parent=%p name=%.*s got %p\n", |
| 1112 | parent, dname.len, dname.name, dn); |
| 1113 | |
| 1114 | if (!dn) { |
| 1115 | dn = d_alloc(parent, &dname); |
| 1116 | dout("d_alloc %p '%.*s' = %p\n", parent, |
| 1117 | dname.len, dname.name, dn); |
| 1118 | if (dn == NULL) { |
| 1119 | dput(parent); |
| 1120 | err = -ENOMEM; |
| 1121 | goto done; |
| 1122 | } |
| 1123 | err = ceph_init_dentry(dn); |
| 1124 | if (err < 0) { |
| 1125 | dput(dn); |
| 1126 | dput(parent); |
| 1127 | goto done; |
| 1128 | } |
| 1129 | } else if (dn->d_inode && |
| 1130 | (ceph_ino(dn->d_inode) != vino.ino || |
| 1131 | ceph_snap(dn->d_inode) != vino.snap)) { |
| 1132 | dout(" dn %p points to wrong inode %p\n", |
| 1133 | dn, dn->d_inode); |
| 1134 | d_delete(dn); |
| 1135 | dput(dn); |
| 1136 | goto retry_lookup; |
| 1137 | } |
| 1138 | |
| 1139 | req->r_dentry = dn; |
| 1140 | dput(parent); |
| 1141 | } |
Sage Weil | 5b1daec | 2010-01-25 11:33:08 -0800 | [diff] [blame] | 1142 | } |
| 1143 | |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1144 | if (rinfo->head->is_target) { |
| 1145 | vino.ino = le64_to_cpu(rinfo->targeti.in->ino); |
| 1146 | vino.snap = le64_to_cpu(rinfo->targeti.in->snapid); |
| 1147 | |
| 1148 | in = ceph_get_inode(sb, vino); |
| 1149 | if (IS_ERR(in)) { |
| 1150 | err = PTR_ERR(in); |
| 1151 | goto done; |
| 1152 | } |
| 1153 | req->r_target_inode = in; |
| 1154 | |
Yan, Zheng | 01deead | 2014-11-14 21:56:29 +0800 | [diff] [blame^] | 1155 | err = fill_inode(in, req->r_locked_page, &rinfo->targeti, NULL, |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1156 | session, req->r_request_started, |
Yan, Zheng | 4819301 | 2014-04-01 20:34:18 +0800 | [diff] [blame] | 1157 | (!req->r_aborted && rinfo->head->result == 0) ? |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1158 | req->r_fmode : -1, |
| 1159 | &req->r_caps_reservation); |
| 1160 | if (err < 0) { |
| 1161 | pr_err("fill_inode badness %p %llx.%llx\n", |
| 1162 | in, ceph_vinop(in)); |
| 1163 | goto done; |
| 1164 | } |
| 1165 | } |
| 1166 | |
Sage Weil | 9358c6d | 2010-03-30 13:54:41 -0700 | [diff] [blame] | 1167 | /* |
| 1168 | * ignore null lease/binding on snapdir ENOENT, or else we |
| 1169 | * will have trouble splicing in the virtual snapdir later |
| 1170 | */ |
| 1171 | if (rinfo->head->is_dentry && !req->r_aborted && |
Sage Weil | 6c5e50f | 2012-08-21 15:55:25 -0700 | [diff] [blame] | 1172 | req->r_locked_dir && |
Sage Weil | 9358c6d | 2010-03-30 13:54:41 -0700 | [diff] [blame] | 1173 | (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name, |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 1174 | fsc->mount_options->snapdir_name, |
Sage Weil | 9358c6d | 2010-03-30 13:54:41 -0700 | [diff] [blame] | 1175 | req->r_dentry->d_name.len))) { |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1176 | /* |
| 1177 | * lookup link rename : null -> possibly existing inode |
| 1178 | * mknod symlink mkdir : null -> new inode |
| 1179 | * unlink : linked -> null |
| 1180 | */ |
| 1181 | struct inode *dir = req->r_locked_dir; |
| 1182 | struct dentry *dn = req->r_dentry; |
| 1183 | bool have_dir_cap, have_lease; |
| 1184 | |
| 1185 | BUG_ON(!dn); |
| 1186 | BUG_ON(!dir); |
| 1187 | BUG_ON(dn->d_parent->d_inode != dir); |
| 1188 | BUG_ON(ceph_ino(dir) != |
| 1189 | le64_to_cpu(rinfo->diri.in->ino)); |
| 1190 | BUG_ON(ceph_snap(dir) != |
| 1191 | le64_to_cpu(rinfo->diri.in->snapid)); |
| 1192 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1193 | /* do we have a lease on the whole dir? */ |
| 1194 | have_dir_cap = |
| 1195 | (le32_to_cpu(rinfo->diri.in->cap.caps) & |
| 1196 | CEPH_CAP_FILE_SHARED); |
| 1197 | |
| 1198 | /* do we have a dn lease? */ |
| 1199 | have_lease = have_dir_cap || |
Sage Weil | 2f90b85 | 2011-07-26 11:28:25 -0700 | [diff] [blame] | 1200 | le32_to_cpu(rinfo->dlease->duration_ms); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1201 | if (!have_lease) |
| 1202 | dout("fill_trace no dentry lease or dir cap\n"); |
| 1203 | |
| 1204 | /* rename? */ |
| 1205 | if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) { |
Yan, Zheng | 0a8a70f | 2014-04-14 13:13:02 +0800 | [diff] [blame] | 1206 | struct inode *olddir = req->r_old_dentry_dir; |
| 1207 | BUG_ON(!olddir); |
| 1208 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1209 | dout(" src %p '%.*s' dst %p '%.*s'\n", |
| 1210 | req->r_old_dentry, |
| 1211 | req->r_old_dentry->d_name.len, |
| 1212 | req->r_old_dentry->d_name.name, |
| 1213 | dn, dn->d_name.len, dn->d_name.name); |
| 1214 | dout("fill_trace doing d_move %p -> %p\n", |
| 1215 | req->r_old_dentry, dn); |
Sage Weil | c10f5e1 | 2010-04-16 12:56:11 -0700 | [diff] [blame] | 1216 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1217 | d_move(req->r_old_dentry, dn); |
| 1218 | dout(" src %p '%.*s' dst %p '%.*s'\n", |
| 1219 | req->r_old_dentry, |
| 1220 | req->r_old_dentry->d_name.len, |
| 1221 | req->r_old_dentry->d_name.name, |
| 1222 | dn, dn->d_name.len, dn->d_name.name); |
Sage Weil | 81a6cf2 | 2010-05-14 09:35:38 -0700 | [diff] [blame] | 1223 | |
Sage Weil | c4a29f2 | 2009-12-21 11:42:18 -0800 | [diff] [blame] | 1224 | /* ensure target dentry is invalidated, despite |
| 1225 | rehashing bug in vfs_rename_dir */ |
Sage Weil | 81a6cf2 | 2010-05-14 09:35:38 -0700 | [diff] [blame] | 1226 | ceph_invalidate_dentry_lease(dn); |
| 1227 | |
Yan, Zheng | 0a8a70f | 2014-04-14 13:13:02 +0800 | [diff] [blame] | 1228 | /* d_move screws up sibling dentries' offsets */ |
Yan, Zheng | 70db4f3 | 2014-10-21 18:09:56 -0700 | [diff] [blame] | 1229 | ceph_dir_clear_ordered(dir); |
| 1230 | ceph_dir_clear_ordered(olddir); |
Yan, Zheng | 0a8a70f | 2014-04-14 13:13:02 +0800 | [diff] [blame] | 1231 | |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 1232 | dout("dn %p gets new offset %lld\n", req->r_old_dentry, |
Sage Weil | 1cd3935 | 2010-05-03 22:08:02 -0700 | [diff] [blame] | 1233 | ceph_dentry(req->r_old_dentry)->offset); |
Sage Weil | 81a6cf2 | 2010-05-14 09:35:38 -0700 | [diff] [blame] | 1234 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1235 | dn = req->r_old_dentry; /* use old_dentry */ |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1236 | } |
| 1237 | |
| 1238 | /* null dentry? */ |
| 1239 | if (!rinfo->head->is_target) { |
| 1240 | dout("fill_trace null dentry\n"); |
| 1241 | if (dn->d_inode) { |
Yan, Zheng | 70db4f3 | 2014-10-21 18:09:56 -0700 | [diff] [blame] | 1242 | ceph_dir_clear_ordered(dir); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1243 | dout("d_delete %p\n", dn); |
| 1244 | d_delete(dn); |
| 1245 | } else { |
| 1246 | dout("d_instantiate %p NULL\n", dn); |
| 1247 | d_instantiate(dn, NULL); |
| 1248 | if (have_lease && d_unhashed(dn)) |
| 1249 | d_rehash(dn); |
| 1250 | update_dentry_lease(dn, rinfo->dlease, |
| 1251 | session, |
| 1252 | req->r_request_started); |
| 1253 | } |
| 1254 | goto done; |
| 1255 | } |
| 1256 | |
| 1257 | /* attach proper inode */ |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1258 | if (!dn->d_inode) { |
Yan, Zheng | 70db4f3 | 2014-10-21 18:09:56 -0700 | [diff] [blame] | 1259 | ceph_dir_clear_ordered(dir); |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1260 | ihold(in); |
Yan, Zheng | 0a8a70f | 2014-04-14 13:13:02 +0800 | [diff] [blame] | 1261 | dn = splice_dentry(dn, in, &have_lease); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1262 | if (IS_ERR(dn)) { |
| 1263 | err = PTR_ERR(dn); |
| 1264 | goto done; |
| 1265 | } |
| 1266 | req->r_dentry = dn; /* may have spliced */ |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1267 | } else if (dn->d_inode && dn->d_inode != in) { |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1268 | dout(" %p links to %p %llx.%llx, not %llx.%llx\n", |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1269 | dn, dn->d_inode, ceph_vinop(dn->d_inode), |
| 1270 | ceph_vinop(in)); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1271 | have_lease = false; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1272 | } |
| 1273 | |
| 1274 | if (have_lease) |
| 1275 | update_dentry_lease(dn, rinfo->dlease, session, |
| 1276 | req->r_request_started); |
| 1277 | dout(" final dn %p\n", dn); |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1278 | } else if (!req->r_aborted && |
| 1279 | (req->r_op == CEPH_MDS_OP_LOOKUPSNAP || |
| 1280 | req->r_op == CEPH_MDS_OP_MKSNAP)) { |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1281 | struct dentry *dn = req->r_dentry; |
Yan, Zheng | 0a8a70f | 2014-04-14 13:13:02 +0800 | [diff] [blame] | 1282 | struct inode *dir = req->r_locked_dir; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1283 | |
| 1284 | /* fill out a snapdir LOOKUPSNAP dentry */ |
| 1285 | BUG_ON(!dn); |
Yan, Zheng | 0a8a70f | 2014-04-14 13:13:02 +0800 | [diff] [blame] | 1286 | BUG_ON(!dir); |
| 1287 | BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1288 | dout(" linking snapped dir %p to dn %p\n", in, dn); |
Yan, Zheng | 70db4f3 | 2014-10-21 18:09:56 -0700 | [diff] [blame] | 1289 | ceph_dir_clear_ordered(dir); |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1290 | ihold(in); |
Yan, Zheng | 0a8a70f | 2014-04-14 13:13:02 +0800 | [diff] [blame] | 1291 | dn = splice_dentry(dn, in, NULL); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1292 | if (IS_ERR(dn)) { |
| 1293 | err = PTR_ERR(dn); |
| 1294 | goto done; |
| 1295 | } |
| 1296 | req->r_dentry = dn; /* may have spliced */ |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1297 | } |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1298 | done: |
| 1299 | dout("fill_trace done err=%d\n", err); |
| 1300 | return err; |
| 1301 | } |
| 1302 | |
| 1303 | /* |
| 1304 | * Prepopulate our cache with readdir results, leases, etc. |
| 1305 | */ |
Sage Weil | 79f9f99 | 2013-01-29 02:55:31 -0500 | [diff] [blame] | 1306 | static int readdir_prepopulate_inodes_only(struct ceph_mds_request *req, |
| 1307 | struct ceph_mds_session *session) |
| 1308 | { |
| 1309 | struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; |
| 1310 | int i, err = 0; |
| 1311 | |
| 1312 | for (i = 0; i < rinfo->dir_nr; i++) { |
| 1313 | struct ceph_vino vino; |
| 1314 | struct inode *in; |
| 1315 | int rc; |
| 1316 | |
| 1317 | vino.ino = le64_to_cpu(rinfo->dir_in[i].in->ino); |
| 1318 | vino.snap = le64_to_cpu(rinfo->dir_in[i].in->snapid); |
| 1319 | |
| 1320 | in = ceph_get_inode(req->r_dentry->d_sb, vino); |
| 1321 | if (IS_ERR(in)) { |
| 1322 | err = PTR_ERR(in); |
| 1323 | dout("new_inode badness got %d\n", err); |
| 1324 | continue; |
| 1325 | } |
Yan, Zheng | 01deead | 2014-11-14 21:56:29 +0800 | [diff] [blame^] | 1326 | rc = fill_inode(in, NULL, &rinfo->dir_in[i], NULL, session, |
Sage Weil | 79f9f99 | 2013-01-29 02:55:31 -0500 | [diff] [blame] | 1327 | req->r_request_started, -1, |
| 1328 | &req->r_caps_reservation); |
| 1329 | if (rc < 0) { |
| 1330 | pr_err("fill_inode badness on %p got %d\n", in, rc); |
| 1331 | err = rc; |
| 1332 | continue; |
| 1333 | } |
| 1334 | } |
| 1335 | |
| 1336 | return err; |
| 1337 | } |
| 1338 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1339 | int ceph_readdir_prepopulate(struct ceph_mds_request *req, |
| 1340 | struct ceph_mds_session *session) |
| 1341 | { |
| 1342 | struct dentry *parent = req->r_dentry; |
| 1343 | struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; |
| 1344 | struct qstr dname; |
| 1345 | struct dentry *dn; |
| 1346 | struct inode *in; |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1347 | int err = 0, ret, i; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1348 | struct inode *snapdir = NULL; |
| 1349 | struct ceph_mds_request_head *rhead = req->r_request->front.iov_base; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1350 | struct ceph_dentry_info *di; |
Yan, Zheng | 81c6aea | 2013-09-18 09:44:13 +0800 | [diff] [blame] | 1351 | u64 r_readdir_offset = req->r_readdir_offset; |
| 1352 | u32 frag = le32_to_cpu(rhead->args.readdir.frag); |
| 1353 | |
| 1354 | if (rinfo->dir_dir && |
| 1355 | le32_to_cpu(rinfo->dir_dir->frag) != frag) { |
| 1356 | dout("readdir_prepopulate got new frag %x -> %x\n", |
| 1357 | frag, le32_to_cpu(rinfo->dir_dir->frag)); |
| 1358 | frag = le32_to_cpu(rinfo->dir_dir->frag); |
| 1359 | if (ceph_frag_is_leftmost(frag)) |
| 1360 | r_readdir_offset = 2; |
| 1361 | else |
| 1362 | r_readdir_offset = 0; |
| 1363 | } |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1364 | |
Sage Weil | 79f9f99 | 2013-01-29 02:55:31 -0500 | [diff] [blame] | 1365 | if (req->r_aborted) |
| 1366 | return readdir_prepopulate_inodes_only(req, session); |
| 1367 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1368 | if (le32_to_cpu(rinfo->head->op) == CEPH_MDS_OP_LSSNAP) { |
| 1369 | snapdir = ceph_get_snapdir(parent->d_inode); |
| 1370 | parent = d_find_alias(snapdir); |
| 1371 | dout("readdir_prepopulate %d items under SNAPDIR dn %p\n", |
| 1372 | rinfo->dir_nr, parent); |
| 1373 | } else { |
| 1374 | dout("readdir_prepopulate %d items under dn %p\n", |
| 1375 | rinfo->dir_nr, parent); |
| 1376 | if (rinfo->dir_dir) |
| 1377 | ceph_fill_dirfrag(parent->d_inode, rinfo->dir_dir); |
| 1378 | } |
| 1379 | |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1380 | /* FIXME: release caps/leases if error occurs */ |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1381 | for (i = 0; i < rinfo->dir_nr; i++) { |
| 1382 | struct ceph_vino vino; |
| 1383 | |
| 1384 | dname.name = rinfo->dir_dname[i]; |
| 1385 | dname.len = rinfo->dir_dname_len[i]; |
| 1386 | dname.hash = full_name_hash(dname.name, dname.len); |
| 1387 | |
| 1388 | vino.ino = le64_to_cpu(rinfo->dir_in[i].in->ino); |
| 1389 | vino.snap = le64_to_cpu(rinfo->dir_in[i].in->snapid); |
| 1390 | |
| 1391 | retry_lookup: |
| 1392 | dn = d_lookup(parent, &dname); |
| 1393 | dout("d_lookup on parent=%p name=%.*s got %p\n", |
| 1394 | parent, dname.len, dname.name, dn); |
| 1395 | |
| 1396 | if (!dn) { |
| 1397 | dn = d_alloc(parent, &dname); |
| 1398 | dout("d_alloc %p '%.*s' = %p\n", parent, |
| 1399 | dname.len, dname.name, dn); |
| 1400 | if (dn == NULL) { |
| 1401 | dout("d_alloc badness\n"); |
| 1402 | err = -ENOMEM; |
| 1403 | goto out; |
| 1404 | } |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1405 | ret = ceph_init_dentry(dn); |
| 1406 | if (ret < 0) { |
Sage Weil | 8c69673 | 2010-07-22 14:11:56 -0700 | [diff] [blame] | 1407 | dput(dn); |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1408 | err = ret; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1409 | goto out; |
Sage Weil | 8c69673 | 2010-07-22 14:11:56 -0700 | [diff] [blame] | 1410 | } |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1411 | } else if (dn->d_inode && |
| 1412 | (ceph_ino(dn->d_inode) != vino.ino || |
| 1413 | ceph_snap(dn->d_inode) != vino.snap)) { |
| 1414 | dout(" dn %p points to wrong inode %p\n", |
| 1415 | dn, dn->d_inode); |
| 1416 | d_delete(dn); |
| 1417 | dput(dn); |
| 1418 | goto retry_lookup; |
| 1419 | } else { |
| 1420 | /* reorder parent's d_subdirs */ |
Nick Piggin | 2fd6b7f | 2011-01-07 17:49:34 +1100 | [diff] [blame] | 1421 | spin_lock(&parent->d_lock); |
| 1422 | spin_lock_nested(&dn->d_lock, DENTRY_D_LOCK_NESTED); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1423 | list_move(&dn->d_u.d_child, &parent->d_subdirs); |
| 1424 | spin_unlock(&dn->d_lock); |
Nick Piggin | 2fd6b7f | 2011-01-07 17:49:34 +1100 | [diff] [blame] | 1425 | spin_unlock(&parent->d_lock); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1426 | } |
| 1427 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1428 | /* inode */ |
| 1429 | if (dn->d_inode) { |
| 1430 | in = dn->d_inode; |
| 1431 | } else { |
| 1432 | in = ceph_get_inode(parent->d_sb, vino); |
Dan Carpenter | ac1f12e | 2010-08-25 09:11:35 +0200 | [diff] [blame] | 1433 | if (IS_ERR(in)) { |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1434 | dout("new_inode badness\n"); |
Al Viro | 2744c17 | 2012-09-26 21:41:05 -0400 | [diff] [blame] | 1435 | d_drop(dn); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1436 | dput(dn); |
Dan Carpenter | ac1f12e | 2010-08-25 09:11:35 +0200 | [diff] [blame] | 1437 | err = PTR_ERR(in); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1438 | goto out; |
| 1439 | } |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1440 | } |
| 1441 | |
Yan, Zheng | 01deead | 2014-11-14 21:56:29 +0800 | [diff] [blame^] | 1442 | if (fill_inode(in, NULL, &rinfo->dir_in[i], NULL, session, |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1443 | req->r_request_started, -1, |
| 1444 | &req->r_caps_reservation) < 0) { |
| 1445 | pr_err("fill_inode badness on %p\n", in); |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1446 | if (!dn->d_inode) |
| 1447 | iput(in); |
| 1448 | d_drop(dn); |
Sage Weil | d69ed05 | 2010-06-21 10:38:14 -0700 | [diff] [blame] | 1449 | goto next_item; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1450 | } |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1451 | |
| 1452 | if (!dn->d_inode) { |
Yan, Zheng | 0a8a70f | 2014-04-14 13:13:02 +0800 | [diff] [blame] | 1453 | dn = splice_dentry(dn, in, NULL); |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1454 | if (IS_ERR(dn)) { |
| 1455 | err = PTR_ERR(dn); |
| 1456 | dn = NULL; |
| 1457 | goto next_item; |
| 1458 | } |
| 1459 | } |
| 1460 | |
| 1461 | di = dn->d_fsdata; |
| 1462 | di->offset = ceph_make_fpos(frag, i + r_readdir_offset); |
| 1463 | |
| 1464 | update_dentry_lease(dn, rinfo->dir_dlease[i], |
| 1465 | req->r_session, |
| 1466 | req->r_request_started); |
Sage Weil | d69ed05 | 2010-06-21 10:38:14 -0700 | [diff] [blame] | 1467 | next_item: |
| 1468 | if (dn) |
| 1469 | dput(dn); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1470 | } |
Yan, Zheng | 86b58d1 | 2013-12-05 12:38:59 +0800 | [diff] [blame] | 1471 | if (err == 0) |
| 1472 | req->r_did_prepopulate = true; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1473 | |
| 1474 | out: |
| 1475 | if (snapdir) { |
| 1476 | iput(snapdir); |
| 1477 | dput(parent); |
| 1478 | } |
| 1479 | dout("readdir_prepopulate done\n"); |
| 1480 | return err; |
| 1481 | } |
| 1482 | |
| 1483 | int ceph_inode_set_size(struct inode *inode, loff_t size) |
| 1484 | { |
| 1485 | struct ceph_inode_info *ci = ceph_inode(inode); |
| 1486 | int ret = 0; |
| 1487 | |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 1488 | spin_lock(&ci->i_ceph_lock); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1489 | dout("set_size %p %llu -> %llu\n", inode, inode->i_size, size); |
| 1490 | inode->i_size = size; |
| 1491 | inode->i_blocks = (size + (1 << 9) - 1) >> 9; |
| 1492 | |
| 1493 | /* tell the MDS if we are approaching max_size */ |
| 1494 | if ((size << 1) >= ci->i_max_size && |
| 1495 | (ci->i_reported_size << 1) < ci->i_max_size) |
| 1496 | ret = 1; |
| 1497 | |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 1498 | spin_unlock(&ci->i_ceph_lock); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1499 | return ret; |
| 1500 | } |
| 1501 | |
| 1502 | /* |
| 1503 | * Write back inode data in a worker thread. (This can't be done |
| 1504 | * in the message handler context.) |
| 1505 | */ |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 1506 | void ceph_queue_writeback(struct inode *inode) |
| 1507 | { |
Sage Weil | 15a2015 | 2011-11-05 22:06:31 -0700 | [diff] [blame] | 1508 | ihold(inode); |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 1509 | if (queue_work(ceph_inode_to_client(inode)->wb_wq, |
| 1510 | &ceph_inode(inode)->i_wb_work)) { |
Sage Weil | 2c27c9a | 2010-02-17 15:45:51 -0800 | [diff] [blame] | 1511 | dout("ceph_queue_writeback %p\n", inode); |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 1512 | } else { |
Sage Weil | 2c27c9a | 2010-02-17 15:45:51 -0800 | [diff] [blame] | 1513 | dout("ceph_queue_writeback %p failed\n", inode); |
Sage Weil | 15a2015 | 2011-11-05 22:06:31 -0700 | [diff] [blame] | 1514 | iput(inode); |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 1515 | } |
| 1516 | } |
| 1517 | |
| 1518 | static void ceph_writeback_work(struct work_struct *work) |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1519 | { |
| 1520 | struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, |
| 1521 | i_wb_work); |
| 1522 | struct inode *inode = &ci->vfs_inode; |
| 1523 | |
| 1524 | dout("writeback %p\n", inode); |
| 1525 | filemap_fdatawrite(&inode->i_data); |
| 1526 | iput(inode); |
| 1527 | } |
| 1528 | |
| 1529 | /* |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 1530 | * queue an async invalidation |
| 1531 | */ |
| 1532 | void ceph_queue_invalidate(struct inode *inode) |
| 1533 | { |
Sage Weil | 15a2015 | 2011-11-05 22:06:31 -0700 | [diff] [blame] | 1534 | ihold(inode); |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 1535 | if (queue_work(ceph_inode_to_client(inode)->pg_inv_wq, |
| 1536 | &ceph_inode(inode)->i_pg_inv_work)) { |
| 1537 | dout("ceph_queue_invalidate %p\n", inode); |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 1538 | } else { |
| 1539 | dout("ceph_queue_invalidate %p failed\n", inode); |
Sage Weil | 15a2015 | 2011-11-05 22:06:31 -0700 | [diff] [blame] | 1540 | iput(inode); |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 1541 | } |
| 1542 | } |
| 1543 | |
| 1544 | /* |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1545 | * Invalidate inode pages in a worker thread. (This can't be done |
| 1546 | * in the message handler context.) |
| 1547 | */ |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 1548 | static void ceph_invalidate_work(struct work_struct *work) |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1549 | { |
| 1550 | struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, |
| 1551 | i_pg_inv_work); |
| 1552 | struct inode *inode = &ci->vfs_inode; |
| 1553 | u32 orig_gen; |
| 1554 | int check = 0; |
| 1555 | |
Yan, Zheng | b0d7c22 | 2013-08-12 21:42:15 -0700 | [diff] [blame] | 1556 | mutex_lock(&ci->i_truncate_mutex); |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 1557 | spin_lock(&ci->i_ceph_lock); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1558 | dout("invalidate_pages %p gen %d revoking %d\n", inode, |
| 1559 | ci->i_rdcache_gen, ci->i_rdcache_revoking); |
Sage Weil | cd045cb | 2010-11-04 11:05:05 -0700 | [diff] [blame] | 1560 | if (ci->i_rdcache_revoking != ci->i_rdcache_gen) { |
Yan, Zheng | 9563f88 | 2013-11-22 13:50:45 +0800 | [diff] [blame] | 1561 | if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) |
| 1562 | check = 1; |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 1563 | spin_unlock(&ci->i_ceph_lock); |
Yan, Zheng | b0d7c22 | 2013-08-12 21:42:15 -0700 | [diff] [blame] | 1564 | mutex_unlock(&ci->i_truncate_mutex); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1565 | goto out; |
| 1566 | } |
| 1567 | orig_gen = ci->i_rdcache_gen; |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 1568 | spin_unlock(&ci->i_ceph_lock); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1569 | |
Yan, Zheng | 4e217b5 | 2014-06-08 05:08:56 +0800 | [diff] [blame] | 1570 | truncate_pagecache(inode, 0); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1571 | |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 1572 | spin_lock(&ci->i_ceph_lock); |
Sage Weil | cd045cb | 2010-11-04 11:05:05 -0700 | [diff] [blame] | 1573 | if (orig_gen == ci->i_rdcache_gen && |
| 1574 | orig_gen == ci->i_rdcache_revoking) { |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1575 | dout("invalidate_pages %p gen %d successful\n", inode, |
| 1576 | ci->i_rdcache_gen); |
Sage Weil | cd045cb | 2010-11-04 11:05:05 -0700 | [diff] [blame] | 1577 | ci->i_rdcache_revoking--; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1578 | check = 1; |
| 1579 | } else { |
Sage Weil | cd045cb | 2010-11-04 11:05:05 -0700 | [diff] [blame] | 1580 | dout("invalidate_pages %p gen %d raced, now %d revoking %d\n", |
| 1581 | inode, orig_gen, ci->i_rdcache_gen, |
| 1582 | ci->i_rdcache_revoking); |
Yan, Zheng | 9563f88 | 2013-11-22 13:50:45 +0800 | [diff] [blame] | 1583 | if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) |
| 1584 | check = 1; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1585 | } |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 1586 | spin_unlock(&ci->i_ceph_lock); |
Yan, Zheng | b0d7c22 | 2013-08-12 21:42:15 -0700 | [diff] [blame] | 1587 | mutex_unlock(&ci->i_truncate_mutex); |
Yan, Zheng | 9563f88 | 2013-11-22 13:50:45 +0800 | [diff] [blame] | 1588 | out: |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1589 | if (check) |
| 1590 | ceph_check_caps(ci, 0, NULL); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1591 | iput(inode); |
| 1592 | } |
| 1593 | |
| 1594 | |
| 1595 | /* |
Yan, Zheng | 3f99969 | 2013-03-01 10:57:54 +0800 | [diff] [blame] | 1596 | * called by trunc_wq; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1597 | * |
| 1598 | * We also truncate in a separate thread as well. |
| 1599 | */ |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 1600 | static void ceph_vmtruncate_work(struct work_struct *work) |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1601 | { |
| 1602 | struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, |
| 1603 | i_vmtruncate_work); |
| 1604 | struct inode *inode = &ci->vfs_inode; |
| 1605 | |
| 1606 | dout("vmtruncate_work %p\n", inode); |
Yan, Zheng | b415bf4 | 2013-07-02 12:40:19 +0800 | [diff] [blame] | 1607 | __ceph_do_pending_vmtruncate(inode); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1608 | iput(inode); |
| 1609 | } |
| 1610 | |
| 1611 | /* |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 1612 | * Queue an async vmtruncate. If we fail to queue work, we will handle |
| 1613 | * the truncation the next time we call __ceph_do_pending_vmtruncate. |
| 1614 | */ |
| 1615 | void ceph_queue_vmtruncate(struct inode *inode) |
| 1616 | { |
| 1617 | struct ceph_inode_info *ci = ceph_inode(inode); |
| 1618 | |
Sage Weil | 15a2015 | 2011-11-05 22:06:31 -0700 | [diff] [blame] | 1619 | ihold(inode); |
Milosz Tanski | 99ccbd2 | 2013-08-21 17:29:54 -0400 | [diff] [blame] | 1620 | |
Cheng Renquan | 640ef79 | 2010-03-26 17:40:33 +0800 | [diff] [blame] | 1621 | if (queue_work(ceph_sb_to_client(inode->i_sb)->trunc_wq, |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 1622 | &ci->i_vmtruncate_work)) { |
| 1623 | dout("ceph_queue_vmtruncate %p\n", inode); |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 1624 | } else { |
| 1625 | dout("ceph_queue_vmtruncate %p failed, pending=%d\n", |
| 1626 | inode, ci->i_truncate_pending); |
Sage Weil | 15a2015 | 2011-11-05 22:06:31 -0700 | [diff] [blame] | 1627 | iput(inode); |
Sage Weil | 3c6f6b7 | 2010-02-09 15:24:44 -0800 | [diff] [blame] | 1628 | } |
| 1629 | } |
| 1630 | |
| 1631 | /* |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1632 | * Make sure any pending truncation is applied before doing anything |
| 1633 | * that may depend on it. |
| 1634 | */ |
Yan, Zheng | b415bf4 | 2013-07-02 12:40:19 +0800 | [diff] [blame] | 1635 | void __ceph_do_pending_vmtruncate(struct inode *inode) |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1636 | { |
| 1637 | struct ceph_inode_info *ci = ceph_inode(inode); |
| 1638 | u64 to; |
Yan, Zheng | a85f50b | 2012-11-19 10:49:08 +0800 | [diff] [blame] | 1639 | int wrbuffer_refs, finish = 0; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1640 | |
Yan, Zheng | b0d7c22 | 2013-08-12 21:42:15 -0700 | [diff] [blame] | 1641 | mutex_lock(&ci->i_truncate_mutex); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1642 | retry: |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 1643 | spin_lock(&ci->i_ceph_lock); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1644 | if (ci->i_truncate_pending == 0) { |
| 1645 | dout("__do_pending_vmtruncate %p none pending\n", inode); |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 1646 | spin_unlock(&ci->i_ceph_lock); |
Yan, Zheng | b0d7c22 | 2013-08-12 21:42:15 -0700 | [diff] [blame] | 1647 | mutex_unlock(&ci->i_truncate_mutex); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1648 | return; |
| 1649 | } |
| 1650 | |
| 1651 | /* |
| 1652 | * make sure any dirty snapped pages are flushed before we |
| 1653 | * possibly truncate them.. so write AND block! |
| 1654 | */ |
| 1655 | if (ci->i_wrbuffer_ref_head < ci->i_wrbuffer_ref) { |
| 1656 | dout("__do_pending_vmtruncate %p flushing snaps first\n", |
| 1657 | inode); |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 1658 | spin_unlock(&ci->i_ceph_lock); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1659 | filemap_write_and_wait_range(&inode->i_data, 0, |
| 1660 | inode->i_sb->s_maxbytes); |
| 1661 | goto retry; |
| 1662 | } |
| 1663 | |
Yan, Zheng | b0d7c22 | 2013-08-12 21:42:15 -0700 | [diff] [blame] | 1664 | /* there should be no reader or writer */ |
| 1665 | WARN_ON_ONCE(ci->i_rd_ref || ci->i_wr_ref); |
| 1666 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1667 | to = ci->i_truncate_size; |
| 1668 | wrbuffer_refs = ci->i_wrbuffer_ref; |
| 1669 | dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode, |
| 1670 | ci->i_truncate_pending, to); |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 1671 | spin_unlock(&ci->i_ceph_lock); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1672 | |
Yan, Zheng | 4e217b5 | 2014-06-08 05:08:56 +0800 | [diff] [blame] | 1673 | truncate_pagecache(inode, to); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1674 | |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 1675 | spin_lock(&ci->i_ceph_lock); |
Yan, Zheng | a85f50b | 2012-11-19 10:49:08 +0800 | [diff] [blame] | 1676 | if (to == ci->i_truncate_size) { |
| 1677 | ci->i_truncate_pending = 0; |
| 1678 | finish = 1; |
| 1679 | } |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 1680 | spin_unlock(&ci->i_ceph_lock); |
Yan, Zheng | a85f50b | 2012-11-19 10:49:08 +0800 | [diff] [blame] | 1681 | if (!finish) |
| 1682 | goto retry; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1683 | |
Yan, Zheng | b0d7c22 | 2013-08-12 21:42:15 -0700 | [diff] [blame] | 1684 | mutex_unlock(&ci->i_truncate_mutex); |
| 1685 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1686 | if (wrbuffer_refs == 0) |
| 1687 | ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL); |
Yan, Zheng | a85f50b | 2012-11-19 10:49:08 +0800 | [diff] [blame] | 1688 | |
| 1689 | wake_up_all(&ci->i_cap_wq); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1690 | } |
| 1691 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1692 | /* |
| 1693 | * symlinks |
| 1694 | */ |
| 1695 | static void *ceph_sym_follow_link(struct dentry *dentry, struct nameidata *nd) |
| 1696 | { |
| 1697 | struct ceph_inode_info *ci = ceph_inode(dentry->d_inode); |
| 1698 | nd_set_link(nd, ci->i_symlink); |
| 1699 | return NULL; |
| 1700 | } |
| 1701 | |
| 1702 | static const struct inode_operations ceph_symlink_iops = { |
| 1703 | .readlink = generic_readlink, |
| 1704 | .follow_link = ceph_sym_follow_link, |
Yan, Zheng | 0b93267 | 2013-04-07 16:28:49 +0800 | [diff] [blame] | 1705 | .setattr = ceph_setattr, |
| 1706 | .getattr = ceph_getattr, |
| 1707 | .setxattr = ceph_setxattr, |
| 1708 | .getxattr = ceph_getxattr, |
| 1709 | .listxattr = ceph_listxattr, |
| 1710 | .removexattr = ceph_removexattr, |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1711 | }; |
| 1712 | |
| 1713 | /* |
| 1714 | * setattr |
| 1715 | */ |
| 1716 | int ceph_setattr(struct dentry *dentry, struct iattr *attr) |
| 1717 | { |
| 1718 | struct inode *inode = dentry->d_inode; |
| 1719 | struct ceph_inode_info *ci = ceph_inode(inode); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1720 | const unsigned int ia_valid = attr->ia_valid; |
| 1721 | struct ceph_mds_request *req; |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 1722 | struct ceph_mds_client *mdsc = ceph_sb_to_client(dentry->d_sb)->mdsc; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1723 | int issued; |
| 1724 | int release = 0, dirtied = 0; |
| 1725 | int mask = 0; |
| 1726 | int err = 0; |
Sage Weil | fca65b4 | 2011-05-04 11:33:47 -0700 | [diff] [blame] | 1727 | int inode_dirty_flags = 0; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1728 | |
| 1729 | if (ceph_snap(inode) != CEPH_NOSNAP) |
| 1730 | return -EROFS; |
| 1731 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1732 | err = inode_change_ok(inode, attr); |
| 1733 | if (err != 0) |
| 1734 | return err; |
| 1735 | |
| 1736 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETATTR, |
| 1737 | USE_AUTH_MDS); |
| 1738 | if (IS_ERR(req)) |
| 1739 | return PTR_ERR(req); |
| 1740 | |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 1741 | spin_lock(&ci->i_ceph_lock); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1742 | issued = __ceph_caps_issued(ci, NULL); |
| 1743 | dout("setattr %p issued %s\n", inode, ceph_cap_string(issued)); |
| 1744 | |
| 1745 | if (ia_valid & ATTR_UID) { |
| 1746 | dout("setattr %p uid %d -> %d\n", inode, |
Eric W. Biederman | bd2bae6 | 2013-01-31 04:05:39 -0800 | [diff] [blame] | 1747 | from_kuid(&init_user_ns, inode->i_uid), |
| 1748 | from_kuid(&init_user_ns, attr->ia_uid)); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1749 | if (issued & CEPH_CAP_AUTH_EXCL) { |
| 1750 | inode->i_uid = attr->ia_uid; |
| 1751 | dirtied |= CEPH_CAP_AUTH_EXCL; |
| 1752 | } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || |
Eric W. Biederman | ab871b9 | 2013-01-31 03:40:12 -0800 | [diff] [blame] | 1753 | !uid_eq(attr->ia_uid, inode->i_uid)) { |
| 1754 | req->r_args.setattr.uid = cpu_to_le32( |
| 1755 | from_kuid(&init_user_ns, attr->ia_uid)); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1756 | mask |= CEPH_SETATTR_UID; |
| 1757 | release |= CEPH_CAP_AUTH_SHARED; |
| 1758 | } |
| 1759 | } |
| 1760 | if (ia_valid & ATTR_GID) { |
| 1761 | dout("setattr %p gid %d -> %d\n", inode, |
Eric W. Biederman | bd2bae6 | 2013-01-31 04:05:39 -0800 | [diff] [blame] | 1762 | from_kgid(&init_user_ns, inode->i_gid), |
| 1763 | from_kgid(&init_user_ns, attr->ia_gid)); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1764 | if (issued & CEPH_CAP_AUTH_EXCL) { |
| 1765 | inode->i_gid = attr->ia_gid; |
| 1766 | dirtied |= CEPH_CAP_AUTH_EXCL; |
| 1767 | } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || |
Eric W. Biederman | ab871b9 | 2013-01-31 03:40:12 -0800 | [diff] [blame] | 1768 | !gid_eq(attr->ia_gid, inode->i_gid)) { |
| 1769 | req->r_args.setattr.gid = cpu_to_le32( |
| 1770 | from_kgid(&init_user_ns, attr->ia_gid)); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1771 | mask |= CEPH_SETATTR_GID; |
| 1772 | release |= CEPH_CAP_AUTH_SHARED; |
| 1773 | } |
| 1774 | } |
| 1775 | if (ia_valid & ATTR_MODE) { |
| 1776 | dout("setattr %p mode 0%o -> 0%o\n", inode, inode->i_mode, |
| 1777 | attr->ia_mode); |
| 1778 | if (issued & CEPH_CAP_AUTH_EXCL) { |
| 1779 | inode->i_mode = attr->ia_mode; |
| 1780 | dirtied |= CEPH_CAP_AUTH_EXCL; |
| 1781 | } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || |
| 1782 | attr->ia_mode != inode->i_mode) { |
Guangliang Zhao | 7221fe4 | 2013-11-11 15:18:03 +0800 | [diff] [blame] | 1783 | inode->i_mode = attr->ia_mode; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1784 | req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode); |
| 1785 | mask |= CEPH_SETATTR_MODE; |
| 1786 | release |= CEPH_CAP_AUTH_SHARED; |
| 1787 | } |
| 1788 | } |
| 1789 | |
| 1790 | if (ia_valid & ATTR_ATIME) { |
| 1791 | dout("setattr %p atime %ld.%ld -> %ld.%ld\n", inode, |
| 1792 | inode->i_atime.tv_sec, inode->i_atime.tv_nsec, |
| 1793 | attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec); |
| 1794 | if (issued & CEPH_CAP_FILE_EXCL) { |
| 1795 | ci->i_time_warp_seq++; |
| 1796 | inode->i_atime = attr->ia_atime; |
| 1797 | dirtied |= CEPH_CAP_FILE_EXCL; |
| 1798 | } else if ((issued & CEPH_CAP_FILE_WR) && |
| 1799 | timespec_compare(&inode->i_atime, |
| 1800 | &attr->ia_atime) < 0) { |
| 1801 | inode->i_atime = attr->ia_atime; |
| 1802 | dirtied |= CEPH_CAP_FILE_WR; |
| 1803 | } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || |
| 1804 | !timespec_equal(&inode->i_atime, &attr->ia_atime)) { |
| 1805 | ceph_encode_timespec(&req->r_args.setattr.atime, |
| 1806 | &attr->ia_atime); |
| 1807 | mask |= CEPH_SETATTR_ATIME; |
| 1808 | release |= CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_RD | |
| 1809 | CEPH_CAP_FILE_WR; |
| 1810 | } |
| 1811 | } |
| 1812 | if (ia_valid & ATTR_MTIME) { |
| 1813 | dout("setattr %p mtime %ld.%ld -> %ld.%ld\n", inode, |
| 1814 | inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, |
| 1815 | attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec); |
| 1816 | if (issued & CEPH_CAP_FILE_EXCL) { |
| 1817 | ci->i_time_warp_seq++; |
| 1818 | inode->i_mtime = attr->ia_mtime; |
| 1819 | dirtied |= CEPH_CAP_FILE_EXCL; |
| 1820 | } else if ((issued & CEPH_CAP_FILE_WR) && |
| 1821 | timespec_compare(&inode->i_mtime, |
| 1822 | &attr->ia_mtime) < 0) { |
| 1823 | inode->i_mtime = attr->ia_mtime; |
| 1824 | dirtied |= CEPH_CAP_FILE_WR; |
| 1825 | } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || |
| 1826 | !timespec_equal(&inode->i_mtime, &attr->ia_mtime)) { |
| 1827 | ceph_encode_timespec(&req->r_args.setattr.mtime, |
| 1828 | &attr->ia_mtime); |
| 1829 | mask |= CEPH_SETATTR_MTIME; |
| 1830 | release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_RD | |
| 1831 | CEPH_CAP_FILE_WR; |
| 1832 | } |
| 1833 | } |
| 1834 | if (ia_valid & ATTR_SIZE) { |
| 1835 | dout("setattr %p size %lld -> %lld\n", inode, |
| 1836 | inode->i_size, attr->ia_size); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1837 | if ((issued & CEPH_CAP_FILE_EXCL) && |
| 1838 | attr->ia_size > inode->i_size) { |
| 1839 | inode->i_size = attr->ia_size; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1840 | inode->i_blocks = |
| 1841 | (attr->ia_size + (1 << 9) - 1) >> 9; |
| 1842 | inode->i_ctime = attr->ia_ctime; |
| 1843 | ci->i_reported_size = attr->ia_size; |
| 1844 | dirtied |= CEPH_CAP_FILE_EXCL; |
| 1845 | } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || |
| 1846 | attr->ia_size != inode->i_size) { |
| 1847 | req->r_args.setattr.size = cpu_to_le64(attr->ia_size); |
| 1848 | req->r_args.setattr.old_size = |
| 1849 | cpu_to_le64(inode->i_size); |
| 1850 | mask |= CEPH_SETATTR_SIZE; |
| 1851 | release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_RD | |
| 1852 | CEPH_CAP_FILE_WR; |
| 1853 | } |
| 1854 | } |
| 1855 | |
| 1856 | /* these do nothing */ |
| 1857 | if (ia_valid & ATTR_CTIME) { |
| 1858 | bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME| |
| 1859 | ATTR_MODE|ATTR_UID|ATTR_GID)) == 0; |
| 1860 | dout("setattr %p ctime %ld.%ld -> %ld.%ld (%s)\n", inode, |
| 1861 | inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, |
| 1862 | attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, |
| 1863 | only ? "ctime only" : "ignored"); |
| 1864 | inode->i_ctime = attr->ia_ctime; |
| 1865 | if (only) { |
| 1866 | /* |
| 1867 | * if kernel wants to dirty ctime but nothing else, |
| 1868 | * we need to choose a cap to dirty under, or do |
| 1869 | * a almost-no-op setattr |
| 1870 | */ |
| 1871 | if (issued & CEPH_CAP_AUTH_EXCL) |
| 1872 | dirtied |= CEPH_CAP_AUTH_EXCL; |
| 1873 | else if (issued & CEPH_CAP_FILE_EXCL) |
| 1874 | dirtied |= CEPH_CAP_FILE_EXCL; |
| 1875 | else if (issued & CEPH_CAP_XATTR_EXCL) |
| 1876 | dirtied |= CEPH_CAP_XATTR_EXCL; |
| 1877 | else |
| 1878 | mask |= CEPH_SETATTR_CTIME; |
| 1879 | } |
| 1880 | } |
| 1881 | if (ia_valid & ATTR_FILE) |
| 1882 | dout("setattr %p ATTR_FILE ... hrm!\n", inode); |
| 1883 | |
| 1884 | if (dirtied) { |
Sage Weil | fca65b4 | 2011-05-04 11:33:47 -0700 | [diff] [blame] | 1885 | inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1886 | inode->i_ctime = CURRENT_TIME; |
| 1887 | } |
| 1888 | |
| 1889 | release &= issued; |
Sage Weil | be65559 | 2011-11-30 09:47:09 -0800 | [diff] [blame] | 1890 | spin_unlock(&ci->i_ceph_lock); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1891 | |
Sage Weil | fca65b4 | 2011-05-04 11:33:47 -0700 | [diff] [blame] | 1892 | if (inode_dirty_flags) |
| 1893 | __mark_inode_dirty(inode, inode_dirty_flags); |
| 1894 | |
Guangliang Zhao | 7221fe4 | 2013-11-11 15:18:03 +0800 | [diff] [blame] | 1895 | if (ia_valid & ATTR_MODE) { |
Linus Torvalds | 4db658e | 2014-01-28 18:06:18 -0800 | [diff] [blame] | 1896 | err = posix_acl_chmod(inode, attr->ia_mode); |
Guangliang Zhao | 7221fe4 | 2013-11-11 15:18:03 +0800 | [diff] [blame] | 1897 | if (err) |
| 1898 | goto out_put; |
| 1899 | } |
| 1900 | |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1901 | if (mask) { |
Sage Weil | 70b666c | 2011-05-27 09:24:26 -0700 | [diff] [blame] | 1902 | req->r_inode = inode; |
| 1903 | ihold(inode); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1904 | req->r_inode_drop = release; |
| 1905 | req->r_args.setattr.mask = cpu_to_le32(mask); |
| 1906 | req->r_num_caps = 1; |
Sage Weil | 752c8bd | 2013-02-05 13:52:29 -0800 | [diff] [blame] | 1907 | err = ceph_mdsc_do_request(mdsc, NULL, req); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1908 | } |
| 1909 | dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err, |
| 1910 | ceph_cap_string(dirtied), mask); |
| 1911 | |
| 1912 | ceph_mdsc_put_request(req); |
Yan, Zheng | b0d7c22 | 2013-08-12 21:42:15 -0700 | [diff] [blame] | 1913 | if (mask & CEPH_SETATTR_SIZE) |
| 1914 | __ceph_do_pending_vmtruncate(inode); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1915 | return err; |
Guangliang Zhao | 7221fe4 | 2013-11-11 15:18:03 +0800 | [diff] [blame] | 1916 | out_put: |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1917 | ceph_mdsc_put_request(req); |
| 1918 | return err; |
| 1919 | } |
| 1920 | |
| 1921 | /* |
| 1922 | * Verify that we have a lease on the given mask. If not, |
| 1923 | * do a getattr against an mds. |
| 1924 | */ |
Yan, Zheng | 01deead | 2014-11-14 21:56:29 +0800 | [diff] [blame^] | 1925 | int __ceph_do_getattr(struct inode *inode, struct page *locked_page, |
| 1926 | int mask, bool force) |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1927 | { |
Yehuda Sadeh | 3d14c5d | 2010-04-06 15:14:15 -0700 | [diff] [blame] | 1928 | struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); |
| 1929 | struct ceph_mds_client *mdsc = fsc->mdsc; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1930 | struct ceph_mds_request *req; |
| 1931 | int err; |
| 1932 | |
| 1933 | if (ceph_snap(inode) == CEPH_SNAPDIR) { |
| 1934 | dout("do_getattr inode %p SNAPDIR\n", inode); |
| 1935 | return 0; |
| 1936 | } |
| 1937 | |
Yan, Zheng | 01deead | 2014-11-14 21:56:29 +0800 | [diff] [blame^] | 1938 | dout("do_getattr inode %p mask %s mode 0%o\n", |
| 1939 | inode, ceph_cap_string(mask), inode->i_mode); |
Yan, Zheng | 508b32d | 2014-09-16 21:46:17 +0800 | [diff] [blame] | 1940 | if (!force && ceph_caps_issued_mask(ceph_inode(inode), mask, 1)) |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1941 | return 0; |
| 1942 | |
| 1943 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, USE_ANY_MDS); |
| 1944 | if (IS_ERR(req)) |
| 1945 | return PTR_ERR(req); |
Sage Weil | 70b666c | 2011-05-27 09:24:26 -0700 | [diff] [blame] | 1946 | req->r_inode = inode; |
| 1947 | ihold(inode); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1948 | req->r_num_caps = 1; |
| 1949 | req->r_args.getattr.mask = cpu_to_le32(mask); |
Yan, Zheng | 01deead | 2014-11-14 21:56:29 +0800 | [diff] [blame^] | 1950 | req->r_locked_page = locked_page; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1951 | err = ceph_mdsc_do_request(mdsc, NULL, req); |
Yan, Zheng | 01deead | 2014-11-14 21:56:29 +0800 | [diff] [blame^] | 1952 | if (locked_page && err == 0) { |
| 1953 | u64 inline_version = req->r_reply_info.targeti.inline_version; |
| 1954 | if (inline_version == 0) { |
| 1955 | /* the reply is supposed to contain inline data */ |
| 1956 | err = -EINVAL; |
| 1957 | } else if (inline_version == CEPH_INLINE_NONE) { |
| 1958 | err = -ENODATA; |
| 1959 | } else { |
| 1960 | err = req->r_reply_info.targeti.inline_len; |
| 1961 | } |
| 1962 | } |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1963 | ceph_mdsc_put_request(req); |
| 1964 | dout("do_getattr result=%d\n", err); |
| 1965 | return err; |
| 1966 | } |
| 1967 | |
| 1968 | |
| 1969 | /* |
| 1970 | * Check inode permissions. We verify we have a valid value for |
| 1971 | * the AUTH cap, then call the generic handler. |
| 1972 | */ |
Al Viro | 10556cb | 2011-06-20 19:28:19 -0400 | [diff] [blame] | 1973 | int ceph_permission(struct inode *inode, int mask) |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1974 | { |
Nick Piggin | b74c79e | 2011-01-07 17:49:58 +1100 | [diff] [blame] | 1975 | int err; |
| 1976 | |
Al Viro | 10556cb | 2011-06-20 19:28:19 -0400 | [diff] [blame] | 1977 | if (mask & MAY_NOT_BLOCK) |
Nick Piggin | b74c79e | 2011-01-07 17:49:58 +1100 | [diff] [blame] | 1978 | return -ECHILD; |
| 1979 | |
Yan, Zheng | 508b32d | 2014-09-16 21:46:17 +0800 | [diff] [blame] | 1980 | err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED, false); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1981 | |
| 1982 | if (!err) |
Al Viro | 2830ba7 | 2011-06-20 19:16:29 -0400 | [diff] [blame] | 1983 | err = generic_permission(inode, mask); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1984 | return err; |
| 1985 | } |
| 1986 | |
| 1987 | /* |
| 1988 | * Get all attributes. Hopefully somedata we'll have a statlite() |
| 1989 | * and can limit the fields we require to be accurate. |
| 1990 | */ |
| 1991 | int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry, |
| 1992 | struct kstat *stat) |
| 1993 | { |
| 1994 | struct inode *inode = dentry->d_inode; |
Sage Weil | 232d4b0 | 2009-10-21 11:21:49 -0700 | [diff] [blame] | 1995 | struct ceph_inode_info *ci = ceph_inode(inode); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1996 | int err; |
| 1997 | |
Yan, Zheng | 508b32d | 2014-09-16 21:46:17 +0800 | [diff] [blame] | 1998 | err = ceph_do_getattr(inode, CEPH_STAT_CAP_INODE_ALL, false); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 1999 | if (!err) { |
| 2000 | generic_fillattr(inode, stat); |
Yehuda Sadeh | ad1fee9 | 2011-01-21 16:44:03 -0800 | [diff] [blame] | 2001 | stat->ino = ceph_translate_ino(inode->i_sb, inode->i_ino); |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 2002 | if (ceph_snap(inode) != CEPH_NOSNAP) |
| 2003 | stat->dev = ceph_snap(inode); |
| 2004 | else |
| 2005 | stat->dev = 0; |
Sage Weil | 232d4b0 | 2009-10-21 11:21:49 -0700 | [diff] [blame] | 2006 | if (S_ISDIR(inode->i_mode)) { |
Yehuda Sadeh | 1c1266b | 2011-01-12 16:53:27 -0800 | [diff] [blame] | 2007 | if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), |
| 2008 | RBYTES)) |
| 2009 | stat->size = ci->i_rbytes; |
| 2010 | else |
| 2011 | stat->size = ci->i_files + ci->i_subdirs; |
Sage Weil | 232d4b0 | 2009-10-21 11:21:49 -0700 | [diff] [blame] | 2012 | stat->blocks = 0; |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 2013 | stat->blksize = 65536; |
Sage Weil | 232d4b0 | 2009-10-21 11:21:49 -0700 | [diff] [blame] | 2014 | } |
Sage Weil | 355da1e | 2009-10-06 11:31:08 -0700 | [diff] [blame] | 2015 | } |
| 2016 | return err; |
| 2017 | } |