1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/ceph/ceph_debug.h> 3 #include <linux/ceph/pagelist.h> 4 5 #include "super.h" 6 #include "mds_client.h" 7 8 #include <linux/ceph/decode.h> 9 10 #include <linux/xattr.h> 11 #include <linux/security.h> 12 #include <linux/posix_acl_xattr.h> 13 #include <linux/slab.h> 14 15 #define XATTR_CEPH_PREFIX "ceph." 16 #define XATTR_CEPH_PREFIX_LEN (sizeof (XATTR_CEPH_PREFIX) - 1) 17 18 static int __remove_xattr(struct ceph_inode_info *ci, 19 struct ceph_inode_xattr *xattr); 20 21 static bool ceph_is_valid_xattr(const char *name) 22 { 23 return !strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) || 24 !strncmp(name, XATTR_CEPH_PREFIX, XATTR_CEPH_PREFIX_LEN) || 25 !strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) || 26 !strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN); 27 } 28 29 /* 30 * These define virtual xattrs exposing the recursive directory 31 * statistics and layout metadata. 32 */ 33 struct ceph_vxattr { 34 char *name; 35 size_t name_size; /* strlen(name) + 1 (for '\0') */ 36 ssize_t (*getxattr_cb)(struct ceph_inode_info *ci, char *val, 37 size_t size); 38 bool (*exists_cb)(struct ceph_inode_info *ci); 39 unsigned int flags; 40 }; 41 42 #define VXATTR_FLAG_READONLY (1<<0) 43 #define VXATTR_FLAG_HIDDEN (1<<1) 44 #define VXATTR_FLAG_RSTAT (1<<2) 45 46 /* layouts */ 47 48 static bool ceph_vxattrcb_layout_exists(struct ceph_inode_info *ci) 49 { 50 struct ceph_file_layout *fl = &ci->i_layout; 51 return (fl->stripe_unit > 0 || fl->stripe_count > 0 || 52 fl->object_size > 0 || fl->pool_id >= 0 || 53 rcu_dereference_raw(fl->pool_ns) != NULL); 54 } 55 56 static ssize_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val, 57 size_t size) 58 { 59 struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb); 60 struct ceph_osd_client *osdc = &fsc->client->osdc; 61 struct ceph_string *pool_ns; 62 s64 pool = ci->i_layout.pool_id; 63 const char *pool_name; 64 const char *ns_field = " pool_namespace="; 65 char buf[128]; 66 size_t len, total_len = 0; 67 ssize_t ret; 68 69 pool_ns = ceph_try_get_string(ci->i_layout.pool_ns); 70 71 dout("ceph_vxattrcb_layout %p\n", &ci->vfs_inode); 72 down_read(&osdc->lock); 73 pool_name = ceph_pg_pool_name_by_id(osdc->osdmap, pool); 74 if (pool_name) { 75 len = snprintf(buf, sizeof(buf), 76 "stripe_unit=%u stripe_count=%u object_size=%u pool=", 77 ci->i_layout.stripe_unit, ci->i_layout.stripe_count, 78 ci->i_layout.object_size); 79 total_len = len + strlen(pool_name); 80 } else { 81 len = snprintf(buf, sizeof(buf), 82 "stripe_unit=%u stripe_count=%u object_size=%u pool=%lld", 83 ci->i_layout.stripe_unit, ci->i_layout.stripe_count, 84 ci->i_layout.object_size, pool); 85 total_len = len; 86 } 87 88 if (pool_ns) 89 total_len += strlen(ns_field) + pool_ns->len; 90 91 ret = total_len; 92 if (size >= total_len) { 93 memcpy(val, buf, len); 94 ret = len; 95 if (pool_name) { 96 len = strlen(pool_name); 97 memcpy(val + ret, pool_name, len); 98 ret += len; 99 } 100 if (pool_ns) { 101 len = strlen(ns_field); 102 memcpy(val + ret, ns_field, len); 103 ret += len; 104 memcpy(val + ret, pool_ns->str, pool_ns->len); 105 ret += pool_ns->len; 106 } 107 } 108 up_read(&osdc->lock); 109 ceph_put_string(pool_ns); 110 return ret; 111 } 112 113 /* 114 * The convention with strings in xattrs is that they should not be NULL 115 * terminated, since we're returning the length with them. snprintf always 116 * NULL terminates however, so call it on a temporary buffer and then memcpy 117 * the result into place. 118 */ 119 static int ceph_fmt_xattr(char *val, size_t size, const char *fmt, ...) 120 { 121 int ret; 122 va_list args; 123 char buf[96]; /* NB: reevaluate size if new vxattrs are added */ 124 125 va_start(args, fmt); 126 ret = vsnprintf(buf, size ? sizeof(buf) : 0, fmt, args); 127 va_end(args); 128 129 /* Sanity check */ 130 if (size && ret + 1 > sizeof(buf)) { 131 WARN_ONCE(true, "Returned length too big (%d)", ret); 132 return -E2BIG; 133 } 134 135 if (ret <= size) 136 memcpy(val, buf, ret); 137 return ret; 138 } 139 140 static ssize_t ceph_vxattrcb_layout_stripe_unit(struct ceph_inode_info *ci, 141 char *val, size_t size) 142 { 143 return ceph_fmt_xattr(val, size, "%u", ci->i_layout.stripe_unit); 144 } 145 146 static ssize_t ceph_vxattrcb_layout_stripe_count(struct ceph_inode_info *ci, 147 char *val, size_t size) 148 { 149 return ceph_fmt_xattr(val, size, "%u", ci->i_layout.stripe_count); 150 } 151 152 static ssize_t ceph_vxattrcb_layout_object_size(struct ceph_inode_info *ci, 153 char *val, size_t size) 154 { 155 return ceph_fmt_xattr(val, size, "%u", ci->i_layout.object_size); 156 } 157 158 static ssize_t ceph_vxattrcb_layout_pool(struct ceph_inode_info *ci, 159 char *val, size_t size) 160 { 161 ssize_t ret; 162 struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb); 163 struct ceph_osd_client *osdc = &fsc->client->osdc; 164 s64 pool = ci->i_layout.pool_id; 165 const char *pool_name; 166 167 down_read(&osdc->lock); 168 pool_name = ceph_pg_pool_name_by_id(osdc->osdmap, pool); 169 if (pool_name) { 170 ret = strlen(pool_name); 171 if (ret <= size) 172 memcpy(val, pool_name, ret); 173 } else { 174 ret = ceph_fmt_xattr(val, size, "%lld", pool); 175 } 176 up_read(&osdc->lock); 177 return ret; 178 } 179 180 static ssize_t ceph_vxattrcb_layout_pool_namespace(struct ceph_inode_info *ci, 181 char *val, size_t size) 182 { 183 ssize_t ret = 0; 184 struct ceph_string *ns = ceph_try_get_string(ci->i_layout.pool_ns); 185 186 if (ns) { 187 ret = ns->len; 188 if (ret <= size) 189 memcpy(val, ns->str, ret); 190 ceph_put_string(ns); 191 } 192 return ret; 193 } 194 195 /* directories */ 196 197 static ssize_t ceph_vxattrcb_dir_entries(struct ceph_inode_info *ci, char *val, 198 size_t size) 199 { 200 return ceph_fmt_xattr(val, size, "%lld", ci->i_files + ci->i_subdirs); 201 } 202 203 static ssize_t ceph_vxattrcb_dir_files(struct ceph_inode_info *ci, char *val, 204 size_t size) 205 { 206 return ceph_fmt_xattr(val, size, "%lld", ci->i_files); 207 } 208 209 static ssize_t ceph_vxattrcb_dir_subdirs(struct ceph_inode_info *ci, char *val, 210 size_t size) 211 { 212 return ceph_fmt_xattr(val, size, "%lld", ci->i_subdirs); 213 } 214 215 static ssize_t ceph_vxattrcb_dir_rentries(struct ceph_inode_info *ci, char *val, 216 size_t size) 217 { 218 return ceph_fmt_xattr(val, size, "%lld", 219 ci->i_rfiles + ci->i_rsubdirs); 220 } 221 222 static ssize_t ceph_vxattrcb_dir_rfiles(struct ceph_inode_info *ci, char *val, 223 size_t size) 224 { 225 return ceph_fmt_xattr(val, size, "%lld", ci->i_rfiles); 226 } 227 228 static ssize_t ceph_vxattrcb_dir_rsubdirs(struct ceph_inode_info *ci, char *val, 229 size_t size) 230 { 231 return ceph_fmt_xattr(val, size, "%lld", ci->i_rsubdirs); 232 } 233 234 static ssize_t ceph_vxattrcb_dir_rbytes(struct ceph_inode_info *ci, char *val, 235 size_t size) 236 { 237 return ceph_fmt_xattr(val, size, "%lld", ci->i_rbytes); 238 } 239 240 static ssize_t ceph_vxattrcb_dir_rctime(struct ceph_inode_info *ci, char *val, 241 size_t size) 242 { 243 return ceph_fmt_xattr(val, size, "%lld.%09ld", ci->i_rctime.tv_sec, 244 ci->i_rctime.tv_nsec); 245 } 246 247 /* dir pin */ 248 static bool ceph_vxattrcb_dir_pin_exists(struct ceph_inode_info *ci) 249 { 250 return ci->i_dir_pin != -ENODATA; 251 } 252 253 static ssize_t ceph_vxattrcb_dir_pin(struct ceph_inode_info *ci, char *val, 254 size_t size) 255 { 256 return ceph_fmt_xattr(val, size, "%d", (int)ci->i_dir_pin); 257 } 258 259 /* quotas */ 260 static bool ceph_vxattrcb_quota_exists(struct ceph_inode_info *ci) 261 { 262 bool ret = false; 263 spin_lock(&ci->i_ceph_lock); 264 if ((ci->i_max_files || ci->i_max_bytes) && 265 ci->i_vino.snap == CEPH_NOSNAP && 266 ci->i_snap_realm && 267 ci->i_snap_realm->ino == ci->i_vino.ino) 268 ret = true; 269 spin_unlock(&ci->i_ceph_lock); 270 return ret; 271 } 272 273 static ssize_t ceph_vxattrcb_quota(struct ceph_inode_info *ci, char *val, 274 size_t size) 275 { 276 return ceph_fmt_xattr(val, size, "max_bytes=%llu max_files=%llu", 277 ci->i_max_bytes, ci->i_max_files); 278 } 279 280 static ssize_t ceph_vxattrcb_quota_max_bytes(struct ceph_inode_info *ci, 281 char *val, size_t size) 282 { 283 return ceph_fmt_xattr(val, size, "%llu", ci->i_max_bytes); 284 } 285 286 static ssize_t ceph_vxattrcb_quota_max_files(struct ceph_inode_info *ci, 287 char *val, size_t size) 288 { 289 return ceph_fmt_xattr(val, size, "%llu", ci->i_max_files); 290 } 291 292 /* snapshots */ 293 static bool ceph_vxattrcb_snap_btime_exists(struct ceph_inode_info *ci) 294 { 295 return (ci->i_snap_btime.tv_sec != 0 || ci->i_snap_btime.tv_nsec != 0); 296 } 297 298 static ssize_t ceph_vxattrcb_snap_btime(struct ceph_inode_info *ci, char *val, 299 size_t size) 300 { 301 return ceph_fmt_xattr(val, size, "%lld.%09ld", ci->i_snap_btime.tv_sec, 302 ci->i_snap_btime.tv_nsec); 303 } 304 305 #define CEPH_XATTR_NAME(_type, _name) XATTR_CEPH_PREFIX #_type "." #_name 306 #define CEPH_XATTR_NAME2(_type, _name, _name2) \ 307 XATTR_CEPH_PREFIX #_type "." #_name "." #_name2 308 309 #define XATTR_NAME_CEPH(_type, _name, _flags) \ 310 { \ 311 .name = CEPH_XATTR_NAME(_type, _name), \ 312 .name_size = sizeof (CEPH_XATTR_NAME(_type, _name)), \ 313 .getxattr_cb = ceph_vxattrcb_ ## _type ## _ ## _name, \ 314 .exists_cb = NULL, \ 315 .flags = (VXATTR_FLAG_READONLY | _flags), \ 316 } 317 #define XATTR_RSTAT_FIELD(_type, _name) \ 318 XATTR_NAME_CEPH(_type, _name, VXATTR_FLAG_RSTAT) 319 #define XATTR_LAYOUT_FIELD(_type, _name, _field) \ 320 { \ 321 .name = CEPH_XATTR_NAME2(_type, _name, _field), \ 322 .name_size = sizeof (CEPH_XATTR_NAME2(_type, _name, _field)), \ 323 .getxattr_cb = ceph_vxattrcb_ ## _name ## _ ## _field, \ 324 .exists_cb = ceph_vxattrcb_layout_exists, \ 325 .flags = VXATTR_FLAG_HIDDEN, \ 326 } 327 #define XATTR_QUOTA_FIELD(_type, _name) \ 328 { \ 329 .name = CEPH_XATTR_NAME(_type, _name), \ 330 .name_size = sizeof(CEPH_XATTR_NAME(_type, _name)), \ 331 .getxattr_cb = ceph_vxattrcb_ ## _type ## _ ## _name, \ 332 .exists_cb = ceph_vxattrcb_quota_exists, \ 333 .flags = VXATTR_FLAG_HIDDEN, \ 334 } 335 336 static struct ceph_vxattr ceph_dir_vxattrs[] = { 337 { 338 .name = "ceph.dir.layout", 339 .name_size = sizeof("ceph.dir.layout"), 340 .getxattr_cb = ceph_vxattrcb_layout, 341 .exists_cb = ceph_vxattrcb_layout_exists, 342 .flags = VXATTR_FLAG_HIDDEN, 343 }, 344 XATTR_LAYOUT_FIELD(dir, layout, stripe_unit), 345 XATTR_LAYOUT_FIELD(dir, layout, stripe_count), 346 XATTR_LAYOUT_FIELD(dir, layout, object_size), 347 XATTR_LAYOUT_FIELD(dir, layout, pool), 348 XATTR_LAYOUT_FIELD(dir, layout, pool_namespace), 349 XATTR_NAME_CEPH(dir, entries, 0), 350 XATTR_NAME_CEPH(dir, files, 0), 351 XATTR_NAME_CEPH(dir, subdirs, 0), 352 XATTR_RSTAT_FIELD(dir, rentries), 353 XATTR_RSTAT_FIELD(dir, rfiles), 354 XATTR_RSTAT_FIELD(dir, rsubdirs), 355 XATTR_RSTAT_FIELD(dir, rbytes), 356 XATTR_RSTAT_FIELD(dir, rctime), 357 { 358 .name = "ceph.dir.pin", 359 .name_size = sizeof("ceph.dir.pin"), 360 .getxattr_cb = ceph_vxattrcb_dir_pin, 361 .exists_cb = ceph_vxattrcb_dir_pin_exists, 362 .flags = VXATTR_FLAG_HIDDEN, 363 }, 364 { 365 .name = "ceph.quota", 366 .name_size = sizeof("ceph.quota"), 367 .getxattr_cb = ceph_vxattrcb_quota, 368 .exists_cb = ceph_vxattrcb_quota_exists, 369 .flags = VXATTR_FLAG_HIDDEN, 370 }, 371 XATTR_QUOTA_FIELD(quota, max_bytes), 372 XATTR_QUOTA_FIELD(quota, max_files), 373 { 374 .name = "ceph.snap.btime", 375 .name_size = sizeof("ceph.snap.btime"), 376 .getxattr_cb = ceph_vxattrcb_snap_btime, 377 .exists_cb = ceph_vxattrcb_snap_btime_exists, 378 .flags = VXATTR_FLAG_READONLY, 379 }, 380 { .name = NULL, 0 } /* Required table terminator */ 381 }; 382 383 /* files */ 384 385 static struct ceph_vxattr ceph_file_vxattrs[] = { 386 { 387 .name = "ceph.file.layout", 388 .name_size = sizeof("ceph.file.layout"), 389 .getxattr_cb = ceph_vxattrcb_layout, 390 .exists_cb = ceph_vxattrcb_layout_exists, 391 .flags = VXATTR_FLAG_HIDDEN, 392 }, 393 XATTR_LAYOUT_FIELD(file, layout, stripe_unit), 394 XATTR_LAYOUT_FIELD(file, layout, stripe_count), 395 XATTR_LAYOUT_FIELD(file, layout, object_size), 396 XATTR_LAYOUT_FIELD(file, layout, pool), 397 XATTR_LAYOUT_FIELD(file, layout, pool_namespace), 398 { 399 .name = "ceph.snap.btime", 400 .name_size = sizeof("ceph.snap.btime"), 401 .getxattr_cb = ceph_vxattrcb_snap_btime, 402 .exists_cb = ceph_vxattrcb_snap_btime_exists, 403 .flags = VXATTR_FLAG_READONLY, 404 }, 405 { .name = NULL, 0 } /* Required table terminator */ 406 }; 407 408 static struct ceph_vxattr *ceph_inode_vxattrs(struct inode *inode) 409 { 410 if (S_ISDIR(inode->i_mode)) 411 return ceph_dir_vxattrs; 412 else if (S_ISREG(inode->i_mode)) 413 return ceph_file_vxattrs; 414 return NULL; 415 } 416 417 static struct ceph_vxattr *ceph_match_vxattr(struct inode *inode, 418 const char *name) 419 { 420 struct ceph_vxattr *vxattr = ceph_inode_vxattrs(inode); 421 422 if (vxattr) { 423 while (vxattr->name) { 424 if (!strcmp(vxattr->name, name)) 425 return vxattr; 426 vxattr++; 427 } 428 } 429 430 return NULL; 431 } 432 433 static int __set_xattr(struct ceph_inode_info *ci, 434 const char *name, int name_len, 435 const char *val, int val_len, 436 int flags, int update_xattr, 437 struct ceph_inode_xattr **newxattr) 438 { 439 struct rb_node **p; 440 struct rb_node *parent = NULL; 441 struct ceph_inode_xattr *xattr = NULL; 442 int c; 443 int new = 0; 444 445 p = &ci->i_xattrs.index.rb_node; 446 while (*p) { 447 parent = *p; 448 xattr = rb_entry(parent, struct ceph_inode_xattr, node); 449 c = strncmp(name, xattr->name, min(name_len, xattr->name_len)); 450 if (c < 0) 451 p = &(*p)->rb_left; 452 else if (c > 0) 453 p = &(*p)->rb_right; 454 else { 455 if (name_len == xattr->name_len) 456 break; 457 else if (name_len < xattr->name_len) 458 p = &(*p)->rb_left; 459 else 460 p = &(*p)->rb_right; 461 } 462 xattr = NULL; 463 } 464 465 if (update_xattr) { 466 int err = 0; 467 468 if (xattr && (flags & XATTR_CREATE)) 469 err = -EEXIST; 470 else if (!xattr && (flags & XATTR_REPLACE)) 471 err = -ENODATA; 472 if (err) { 473 kfree(name); 474 kfree(val); 475 kfree(*newxattr); 476 return err; 477 } 478 if (update_xattr < 0) { 479 if (xattr) 480 __remove_xattr(ci, xattr); 481 kfree(name); 482 kfree(*newxattr); 483 return 0; 484 } 485 } 486 487 if (!xattr) { 488 new = 1; 489 xattr = *newxattr; 490 xattr->name = name; 491 xattr->name_len = name_len; 492 xattr->should_free_name = update_xattr; 493 494 ci->i_xattrs.count++; 495 dout("__set_xattr count=%d\n", ci->i_xattrs.count); 496 } else { 497 kfree(*newxattr); 498 *newxattr = NULL; 499 if (xattr->should_free_val) 500 kfree((void *)xattr->val); 501 502 if (update_xattr) { 503 kfree((void *)name); 504 name = xattr->name; 505 } 506 ci->i_xattrs.names_size -= xattr->name_len; 507 ci->i_xattrs.vals_size -= xattr->val_len; 508 } 509 ci->i_xattrs.names_size += name_len; 510 ci->i_xattrs.vals_size += val_len; 511 if (val) 512 xattr->val = val; 513 else 514 xattr->val = ""; 515 516 xattr->val_len = val_len; 517 xattr->dirty = update_xattr; 518 xattr->should_free_val = (val && update_xattr); 519 520 if (new) { 521 rb_link_node(&xattr->node, parent, p); 522 rb_insert_color(&xattr->node, &ci->i_xattrs.index); 523 dout("__set_xattr_val p=%p\n", p); 524 } 525 526 dout("__set_xattr_val added %llx.%llx xattr %p %.*s=%.*s\n", 527 ceph_vinop(&ci->vfs_inode), xattr, name_len, name, val_len, val); 528 529 return 0; 530 } 531 532 static struct ceph_inode_xattr *__get_xattr(struct ceph_inode_info *ci, 533 const char *name) 534 { 535 struct rb_node **p; 536 struct rb_node *parent = NULL; 537 struct ceph_inode_xattr *xattr = NULL; 538 int name_len = strlen(name); 539 int c; 540 541 p = &ci->i_xattrs.index.rb_node; 542 while (*p) { 543 parent = *p; 544 xattr = rb_entry(parent, struct ceph_inode_xattr, node); 545 c = strncmp(name, xattr->name, xattr->name_len); 546 if (c == 0 && name_len > xattr->name_len) 547 c = 1; 548 if (c < 0) 549 p = &(*p)->rb_left; 550 else if (c > 0) 551 p = &(*p)->rb_right; 552 else { 553 dout("__get_xattr %s: found %.*s\n", name, 554 xattr->val_len, xattr->val); 555 return xattr; 556 } 557 } 558 559 dout("__get_xattr %s: not found\n", name); 560 561 return NULL; 562 } 563 564 static void __free_xattr(struct ceph_inode_xattr *xattr) 565 { 566 BUG_ON(!xattr); 567 568 if (xattr->should_free_name) 569 kfree((void *)xattr->name); 570 if (xattr->should_free_val) 571 kfree((void *)xattr->val); 572 573 kfree(xattr); 574 } 575 576 static int __remove_xattr(struct ceph_inode_info *ci, 577 struct ceph_inode_xattr *xattr) 578 { 579 if (!xattr) 580 return -ENODATA; 581 582 rb_erase(&xattr->node, &ci->i_xattrs.index); 583 584 if (xattr->should_free_name) 585 kfree((void *)xattr->name); 586 if (xattr->should_free_val) 587 kfree((void *)xattr->val); 588 589 ci->i_xattrs.names_size -= xattr->name_len; 590 ci->i_xattrs.vals_size -= xattr->val_len; 591 ci->i_xattrs.count--; 592 kfree(xattr); 593 594 return 0; 595 } 596 597 static char *__copy_xattr_names(struct ceph_inode_info *ci, 598 char *dest) 599 { 600 struct rb_node *p; 601 struct ceph_inode_xattr *xattr = NULL; 602 603 p = rb_first(&ci->i_xattrs.index); 604 dout("__copy_xattr_names count=%d\n", ci->i_xattrs.count); 605 606 while (p) { 607 xattr = rb_entry(p, struct ceph_inode_xattr, node); 608 memcpy(dest, xattr->name, xattr->name_len); 609 dest[xattr->name_len] = '\0'; 610 611 dout("dest=%s %p (%s) (%d/%d)\n", dest, xattr, xattr->name, 612 xattr->name_len, ci->i_xattrs.names_size); 613 614 dest += xattr->name_len + 1; 615 p = rb_next(p); 616 } 617 618 return dest; 619 } 620 621 void __ceph_destroy_xattrs(struct ceph_inode_info *ci) 622 { 623 struct rb_node *p, *tmp; 624 struct ceph_inode_xattr *xattr = NULL; 625 626 p = rb_first(&ci->i_xattrs.index); 627 628 dout("__ceph_destroy_xattrs p=%p\n", p); 629 630 while (p) { 631 xattr = rb_entry(p, struct ceph_inode_xattr, node); 632 tmp = p; 633 p = rb_next(tmp); 634 dout("__ceph_destroy_xattrs next p=%p (%.*s)\n", p, 635 xattr->name_len, xattr->name); 636 rb_erase(tmp, &ci->i_xattrs.index); 637 638 __free_xattr(xattr); 639 } 640 641 ci->i_xattrs.names_size = 0; 642 ci->i_xattrs.vals_size = 0; 643 ci->i_xattrs.index_version = 0; 644 ci->i_xattrs.count = 0; 645 ci->i_xattrs.index = RB_ROOT; 646 } 647 648 static int __build_xattrs(struct inode *inode) 649 __releases(ci->i_ceph_lock) 650 __acquires(ci->i_ceph_lock) 651 { 652 u32 namelen; 653 u32 numattr = 0; 654 void *p, *end; 655 u32 len; 656 const char *name, *val; 657 struct ceph_inode_info *ci = ceph_inode(inode); 658 u64 xattr_version; 659 struct ceph_inode_xattr **xattrs = NULL; 660 int err = 0; 661 int i; 662 663 dout("__build_xattrs() len=%d\n", 664 ci->i_xattrs.blob ? (int)ci->i_xattrs.blob->vec.iov_len : 0); 665 666 if (ci->i_xattrs.index_version >= ci->i_xattrs.version) 667 return 0; /* already built */ 668 669 __ceph_destroy_xattrs(ci); 670 671 start: 672 /* updated internal xattr rb tree */ 673 if (ci->i_xattrs.blob && ci->i_xattrs.blob->vec.iov_len > 4) { 674 p = ci->i_xattrs.blob->vec.iov_base; 675 end = p + ci->i_xattrs.blob->vec.iov_len; 676 ceph_decode_32_safe(&p, end, numattr, bad); 677 xattr_version = ci->i_xattrs.version; 678 spin_unlock(&ci->i_ceph_lock); 679 680 xattrs = kcalloc(numattr, sizeof(struct ceph_inode_xattr *), 681 GFP_NOFS); 682 err = -ENOMEM; 683 if (!xattrs) 684 goto bad_lock; 685 686 for (i = 0; i < numattr; i++) { 687 xattrs[i] = kmalloc(sizeof(struct ceph_inode_xattr), 688 GFP_NOFS); 689 if (!xattrs[i]) 690 goto bad_lock; 691 } 692 693 spin_lock(&ci->i_ceph_lock); 694 if (ci->i_xattrs.version != xattr_version) { 695 /* lost a race, retry */ 696 for (i = 0; i < numattr; i++) 697 kfree(xattrs[i]); 698 kfree(xattrs); 699 xattrs = NULL; 700 goto start; 701 } 702 err = -EIO; 703 while (numattr--) { 704 ceph_decode_32_safe(&p, end, len, bad); 705 namelen = len; 706 name = p; 707 p += len; 708 ceph_decode_32_safe(&p, end, len, bad); 709 val = p; 710 p += len; 711 712 err = __set_xattr(ci, name, namelen, val, len, 713 0, 0, &xattrs[numattr]); 714 715 if (err < 0) 716 goto bad; 717 } 718 kfree(xattrs); 719 } 720 ci->i_xattrs.index_version = ci->i_xattrs.version; 721 ci->i_xattrs.dirty = false; 722 723 return err; 724 bad_lock: 725 spin_lock(&ci->i_ceph_lock); 726 bad: 727 if (xattrs) { 728 for (i = 0; i < numattr; i++) 729 kfree(xattrs[i]); 730 kfree(xattrs); 731 } 732 ci->i_xattrs.names_size = 0; 733 return err; 734 } 735 736 static int __get_required_blob_size(struct ceph_inode_info *ci, int name_size, 737 int val_size) 738 { 739 /* 740 * 4 bytes for the length, and additional 4 bytes per each xattr name, 741 * 4 bytes per each value 742 */ 743 int size = 4 + ci->i_xattrs.count*(4 + 4) + 744 ci->i_xattrs.names_size + 745 ci->i_xattrs.vals_size; 746 dout("__get_required_blob_size c=%d names.size=%d vals.size=%d\n", 747 ci->i_xattrs.count, ci->i_xattrs.names_size, 748 ci->i_xattrs.vals_size); 749 750 if (name_size) 751 size += 4 + 4 + name_size + val_size; 752 753 return size; 754 } 755 756 /* 757 * If there are dirty xattrs, reencode xattrs into the prealloc_blob 758 * and swap into place. It returns the old i_xattrs.blob (or NULL) so 759 * that it can be freed by the caller as the i_ceph_lock is likely to be 760 * held. 761 */ 762 struct ceph_buffer *__ceph_build_xattrs_blob(struct ceph_inode_info *ci) 763 { 764 struct rb_node *p; 765 struct ceph_inode_xattr *xattr = NULL; 766 struct ceph_buffer *old_blob = NULL; 767 void *dest; 768 769 dout("__build_xattrs_blob %p\n", &ci->vfs_inode); 770 if (ci->i_xattrs.dirty) { 771 int need = __get_required_blob_size(ci, 0, 0); 772 773 BUG_ON(need > ci->i_xattrs.prealloc_blob->alloc_len); 774 775 p = rb_first(&ci->i_xattrs.index); 776 dest = ci->i_xattrs.prealloc_blob->vec.iov_base; 777 778 ceph_encode_32(&dest, ci->i_xattrs.count); 779 while (p) { 780 xattr = rb_entry(p, struct ceph_inode_xattr, node); 781 782 ceph_encode_32(&dest, xattr->name_len); 783 memcpy(dest, xattr->name, xattr->name_len); 784 dest += xattr->name_len; 785 ceph_encode_32(&dest, xattr->val_len); 786 memcpy(dest, xattr->val, xattr->val_len); 787 dest += xattr->val_len; 788 789 p = rb_next(p); 790 } 791 792 /* adjust buffer len; it may be larger than we need */ 793 ci->i_xattrs.prealloc_blob->vec.iov_len = 794 dest - ci->i_xattrs.prealloc_blob->vec.iov_base; 795 796 if (ci->i_xattrs.blob) 797 old_blob = ci->i_xattrs.blob; 798 ci->i_xattrs.blob = ci->i_xattrs.prealloc_blob; 799 ci->i_xattrs.prealloc_blob = NULL; 800 ci->i_xattrs.dirty = false; 801 ci->i_xattrs.version++; 802 } 803 804 return old_blob; 805 } 806 807 static inline int __get_request_mask(struct inode *in) { 808 struct ceph_mds_request *req = current->journal_info; 809 int mask = 0; 810 if (req && req->r_target_inode == in) { 811 if (req->r_op == CEPH_MDS_OP_LOOKUP || 812 req->r_op == CEPH_MDS_OP_LOOKUPINO || 813 req->r_op == CEPH_MDS_OP_LOOKUPPARENT || 814 req->r_op == CEPH_MDS_OP_GETATTR) { 815 mask = le32_to_cpu(req->r_args.getattr.mask); 816 } else if (req->r_op == CEPH_MDS_OP_OPEN || 817 req->r_op == CEPH_MDS_OP_CREATE) { 818 mask = le32_to_cpu(req->r_args.open.mask); 819 } 820 } 821 return mask; 822 } 823 824 ssize_t __ceph_getxattr(struct inode *inode, const char *name, void *value, 825 size_t size) 826 { 827 struct ceph_inode_info *ci = ceph_inode(inode); 828 struct ceph_inode_xattr *xattr; 829 struct ceph_vxattr *vxattr = NULL; 830 int req_mask; 831 ssize_t err; 832 833 /* let's see if a virtual xattr was requested */ 834 vxattr = ceph_match_vxattr(inode, name); 835 if (vxattr) { 836 int mask = 0; 837 if (vxattr->flags & VXATTR_FLAG_RSTAT) 838 mask |= CEPH_STAT_RSTAT; 839 err = ceph_do_getattr(inode, mask, true); 840 if (err) 841 return err; 842 err = -ENODATA; 843 if (!(vxattr->exists_cb && !vxattr->exists_cb(ci))) { 844 err = vxattr->getxattr_cb(ci, value, size); 845 if (size && size < err) 846 err = -ERANGE; 847 } 848 return err; 849 } 850 851 req_mask = __get_request_mask(inode); 852 853 spin_lock(&ci->i_ceph_lock); 854 dout("getxattr %p name '%s' ver=%lld index_ver=%lld\n", inode, name, 855 ci->i_xattrs.version, ci->i_xattrs.index_version); 856 857 if (ci->i_xattrs.version == 0 || 858 !((req_mask & CEPH_CAP_XATTR_SHARED) || 859 __ceph_caps_issued_mask_metric(ci, CEPH_CAP_XATTR_SHARED, 1))) { 860 spin_unlock(&ci->i_ceph_lock); 861 862 /* security module gets xattr while filling trace */ 863 if (current->journal_info) { 864 pr_warn_ratelimited("sync getxattr %p " 865 "during filling trace\n", inode); 866 return -EBUSY; 867 } 868 869 /* get xattrs from mds (if we don't already have them) */ 870 err = ceph_do_getattr(inode, CEPH_STAT_CAP_XATTR, true); 871 if (err) 872 return err; 873 spin_lock(&ci->i_ceph_lock); 874 } 875 876 err = __build_xattrs(inode); 877 if (err < 0) 878 goto out; 879 880 err = -ENODATA; /* == ENOATTR */ 881 xattr = __get_xattr(ci, name); 882 if (!xattr) 883 goto out; 884 885 err = -ERANGE; 886 if (size && size < xattr->val_len) 887 goto out; 888 889 err = xattr->val_len; 890 if (size == 0) 891 goto out; 892 893 memcpy(value, xattr->val, xattr->val_len); 894 895 if (current->journal_info && 896 !strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN) && 897 security_ismaclabel(name + XATTR_SECURITY_PREFIX_LEN)) 898 ci->i_ceph_flags |= CEPH_I_SEC_INITED; 899 out: 900 spin_unlock(&ci->i_ceph_lock); 901 return err; 902 } 903 904 ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size) 905 { 906 struct inode *inode = d_inode(dentry); 907 struct ceph_inode_info *ci = ceph_inode(inode); 908 bool len_only = (size == 0); 909 u32 namelen; 910 int err; 911 912 spin_lock(&ci->i_ceph_lock); 913 dout("listxattr %p ver=%lld index_ver=%lld\n", inode, 914 ci->i_xattrs.version, ci->i_xattrs.index_version); 915 916 if (ci->i_xattrs.version == 0 || 917 !__ceph_caps_issued_mask_metric(ci, CEPH_CAP_XATTR_SHARED, 1)) { 918 spin_unlock(&ci->i_ceph_lock); 919 err = ceph_do_getattr(inode, CEPH_STAT_CAP_XATTR, true); 920 if (err) 921 return err; 922 spin_lock(&ci->i_ceph_lock); 923 } 924 925 err = __build_xattrs(inode); 926 if (err < 0) 927 goto out; 928 929 /* add 1 byte for each xattr due to the null termination */ 930 namelen = ci->i_xattrs.names_size + ci->i_xattrs.count; 931 if (!len_only) { 932 if (namelen > size) { 933 err = -ERANGE; 934 goto out; 935 } 936 names = __copy_xattr_names(ci, names); 937 size -= namelen; 938 } 939 err = namelen; 940 out: 941 spin_unlock(&ci->i_ceph_lock); 942 return err; 943 } 944 945 static int ceph_sync_setxattr(struct inode *inode, const char *name, 946 const char *value, size_t size, int flags) 947 { 948 struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); 949 struct ceph_inode_info *ci = ceph_inode(inode); 950 struct ceph_mds_request *req; 951 struct ceph_mds_client *mdsc = fsc->mdsc; 952 struct ceph_pagelist *pagelist = NULL; 953 int op = CEPH_MDS_OP_SETXATTR; 954 int err; 955 956 if (size > 0) { 957 /* copy value into pagelist */ 958 pagelist = ceph_pagelist_alloc(GFP_NOFS); 959 if (!pagelist) 960 return -ENOMEM; 961 962 err = ceph_pagelist_append(pagelist, value, size); 963 if (err) 964 goto out; 965 } else if (!value) { 966 if (flags & CEPH_XATTR_REPLACE) 967 op = CEPH_MDS_OP_RMXATTR; 968 else 969 flags |= CEPH_XATTR_REMOVE; 970 } 971 972 dout("setxattr value=%.*s\n", (int)size, value); 973 974 /* do request */ 975 req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS); 976 if (IS_ERR(req)) { 977 err = PTR_ERR(req); 978 goto out; 979 } 980 981 req->r_path2 = kstrdup(name, GFP_NOFS); 982 if (!req->r_path2) { 983 ceph_mdsc_put_request(req); 984 err = -ENOMEM; 985 goto out; 986 } 987 988 if (op == CEPH_MDS_OP_SETXATTR) { 989 req->r_args.setxattr.flags = cpu_to_le32(flags); 990 req->r_pagelist = pagelist; 991 pagelist = NULL; 992 } 993 994 req->r_inode = inode; 995 ihold(inode); 996 req->r_num_caps = 1; 997 req->r_inode_drop = CEPH_CAP_XATTR_SHARED; 998 999 dout("xattr.ver (before): %lld\n", ci->i_xattrs.version); 1000 err = ceph_mdsc_do_request(mdsc, NULL, req); 1001 ceph_mdsc_put_request(req); 1002 dout("xattr.ver (after): %lld\n", ci->i_xattrs.version); 1003 1004 out: 1005 if (pagelist) 1006 ceph_pagelist_release(pagelist); 1007 return err; 1008 } 1009 1010 int __ceph_setxattr(struct inode *inode, const char *name, 1011 const void *value, size_t size, int flags) 1012 { 1013 struct ceph_vxattr *vxattr; 1014 struct ceph_inode_info *ci = ceph_inode(inode); 1015 struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; 1016 struct ceph_cap_flush *prealloc_cf = NULL; 1017 struct ceph_buffer *old_blob = NULL; 1018 int issued; 1019 int err; 1020 int dirty = 0; 1021 int name_len = strlen(name); 1022 int val_len = size; 1023 char *newname = NULL; 1024 char *newval = NULL; 1025 struct ceph_inode_xattr *xattr = NULL; 1026 int required_blob_size; 1027 bool check_realm = false; 1028 bool lock_snap_rwsem = false; 1029 1030 if (ceph_snap(inode) != CEPH_NOSNAP) 1031 return -EROFS; 1032 1033 vxattr = ceph_match_vxattr(inode, name); 1034 if (vxattr) { 1035 if (vxattr->flags & VXATTR_FLAG_READONLY) 1036 return -EOPNOTSUPP; 1037 if (value && !strncmp(vxattr->name, "ceph.quota", 10)) 1038 check_realm = true; 1039 } 1040 1041 /* pass any unhandled ceph.* xattrs through to the MDS */ 1042 if (!strncmp(name, XATTR_CEPH_PREFIX, XATTR_CEPH_PREFIX_LEN)) 1043 goto do_sync_unlocked; 1044 1045 /* preallocate memory for xattr name, value, index node */ 1046 err = -ENOMEM; 1047 newname = kmemdup(name, name_len + 1, GFP_NOFS); 1048 if (!newname) 1049 goto out; 1050 1051 if (val_len) { 1052 newval = kmemdup(value, val_len, GFP_NOFS); 1053 if (!newval) 1054 goto out; 1055 } 1056 1057 xattr = kmalloc(sizeof(struct ceph_inode_xattr), GFP_NOFS); 1058 if (!xattr) 1059 goto out; 1060 1061 prealloc_cf = ceph_alloc_cap_flush(); 1062 if (!prealloc_cf) 1063 goto out; 1064 1065 spin_lock(&ci->i_ceph_lock); 1066 retry: 1067 issued = __ceph_caps_issued(ci, NULL); 1068 if (ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) 1069 goto do_sync; 1070 1071 if (!lock_snap_rwsem && !ci->i_head_snapc) { 1072 lock_snap_rwsem = true; 1073 if (!down_read_trylock(&mdsc->snap_rwsem)) { 1074 spin_unlock(&ci->i_ceph_lock); 1075 down_read(&mdsc->snap_rwsem); 1076 spin_lock(&ci->i_ceph_lock); 1077 goto retry; 1078 } 1079 } 1080 1081 dout("setxattr %p name '%s' issued %s\n", inode, name, 1082 ceph_cap_string(issued)); 1083 __build_xattrs(inode); 1084 1085 required_blob_size = __get_required_blob_size(ci, name_len, val_len); 1086 1087 if (!ci->i_xattrs.prealloc_blob || 1088 required_blob_size > ci->i_xattrs.prealloc_blob->alloc_len) { 1089 struct ceph_buffer *blob; 1090 1091 spin_unlock(&ci->i_ceph_lock); 1092 ceph_buffer_put(old_blob); /* Shouldn't be required */ 1093 dout(" pre-allocating new blob size=%d\n", required_blob_size); 1094 blob = ceph_buffer_new(required_blob_size, GFP_NOFS); 1095 if (!blob) 1096 goto do_sync_unlocked; 1097 spin_lock(&ci->i_ceph_lock); 1098 /* prealloc_blob can't be released while holding i_ceph_lock */ 1099 if (ci->i_xattrs.prealloc_blob) 1100 old_blob = ci->i_xattrs.prealloc_blob; 1101 ci->i_xattrs.prealloc_blob = blob; 1102 goto retry; 1103 } 1104 1105 err = __set_xattr(ci, newname, name_len, newval, val_len, 1106 flags, value ? 1 : -1, &xattr); 1107 1108 if (!err) { 1109 dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL, 1110 &prealloc_cf); 1111 ci->i_xattrs.dirty = true; 1112 inode->i_ctime = current_time(inode); 1113 } 1114 1115 spin_unlock(&ci->i_ceph_lock); 1116 ceph_buffer_put(old_blob); 1117 if (lock_snap_rwsem) 1118 up_read(&mdsc->snap_rwsem); 1119 if (dirty) 1120 __mark_inode_dirty(inode, dirty); 1121 ceph_free_cap_flush(prealloc_cf); 1122 return err; 1123 1124 do_sync: 1125 spin_unlock(&ci->i_ceph_lock); 1126 do_sync_unlocked: 1127 if (lock_snap_rwsem) 1128 up_read(&mdsc->snap_rwsem); 1129 1130 /* security module set xattr while filling trace */ 1131 if (current->journal_info) { 1132 pr_warn_ratelimited("sync setxattr %p " 1133 "during filling trace\n", inode); 1134 err = -EBUSY; 1135 } else { 1136 err = ceph_sync_setxattr(inode, name, value, size, flags); 1137 if (err >= 0 && check_realm) { 1138 /* check if snaprealm was created for quota inode */ 1139 spin_lock(&ci->i_ceph_lock); 1140 if ((ci->i_max_files || ci->i_max_bytes) && 1141 !(ci->i_snap_realm && 1142 ci->i_snap_realm->ino == ci->i_vino.ino)) 1143 err = -EOPNOTSUPP; 1144 spin_unlock(&ci->i_ceph_lock); 1145 } 1146 } 1147 out: 1148 ceph_free_cap_flush(prealloc_cf); 1149 kfree(newname); 1150 kfree(newval); 1151 kfree(xattr); 1152 return err; 1153 } 1154 1155 static int ceph_get_xattr_handler(const struct xattr_handler *handler, 1156 struct dentry *dentry, struct inode *inode, 1157 const char *name, void *value, size_t size) 1158 { 1159 if (!ceph_is_valid_xattr(name)) 1160 return -EOPNOTSUPP; 1161 return __ceph_getxattr(inode, name, value, size); 1162 } 1163 1164 static int ceph_set_xattr_handler(const struct xattr_handler *handler, 1165 struct dentry *unused, struct inode *inode, 1166 const char *name, const void *value, 1167 size_t size, int flags) 1168 { 1169 if (!ceph_is_valid_xattr(name)) 1170 return -EOPNOTSUPP; 1171 return __ceph_setxattr(inode, name, value, size, flags); 1172 } 1173 1174 static const struct xattr_handler ceph_other_xattr_handler = { 1175 .prefix = "", /* match any name => handlers called with full name */ 1176 .get = ceph_get_xattr_handler, 1177 .set = ceph_set_xattr_handler, 1178 }; 1179 1180 #ifdef CONFIG_SECURITY 1181 bool ceph_security_xattr_wanted(struct inode *in) 1182 { 1183 return in->i_security != NULL; 1184 } 1185 1186 bool ceph_security_xattr_deadlock(struct inode *in) 1187 { 1188 struct ceph_inode_info *ci; 1189 bool ret; 1190 if (!in->i_security) 1191 return false; 1192 ci = ceph_inode(in); 1193 spin_lock(&ci->i_ceph_lock); 1194 ret = !(ci->i_ceph_flags & CEPH_I_SEC_INITED) && 1195 !(ci->i_xattrs.version > 0 && 1196 __ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 0)); 1197 spin_unlock(&ci->i_ceph_lock); 1198 return ret; 1199 } 1200 1201 #ifdef CONFIG_CEPH_FS_SECURITY_LABEL 1202 int ceph_security_init_secctx(struct dentry *dentry, umode_t mode, 1203 struct ceph_acl_sec_ctx *as_ctx) 1204 { 1205 struct ceph_pagelist *pagelist = as_ctx->pagelist; 1206 const char *name; 1207 size_t name_len; 1208 int err; 1209 1210 err = security_dentry_init_security(dentry, mode, &dentry->d_name, 1211 &as_ctx->sec_ctx, 1212 &as_ctx->sec_ctxlen); 1213 if (err < 0) { 1214 WARN_ON_ONCE(err != -EOPNOTSUPP); 1215 err = 0; /* do nothing */ 1216 goto out; 1217 } 1218 1219 err = -ENOMEM; 1220 if (!pagelist) { 1221 pagelist = ceph_pagelist_alloc(GFP_KERNEL); 1222 if (!pagelist) 1223 goto out; 1224 err = ceph_pagelist_reserve(pagelist, PAGE_SIZE); 1225 if (err) 1226 goto out; 1227 ceph_pagelist_encode_32(pagelist, 1); 1228 } 1229 1230 /* 1231 * FIXME: Make security_dentry_init_security() generic. Currently 1232 * It only supports single security module and only selinux has 1233 * dentry_init_security hook. 1234 */ 1235 name = XATTR_NAME_SELINUX; 1236 name_len = strlen(name); 1237 err = ceph_pagelist_reserve(pagelist, 1238 4 * 2 + name_len + as_ctx->sec_ctxlen); 1239 if (err) 1240 goto out; 1241 1242 if (as_ctx->pagelist) { 1243 /* update count of KV pairs */ 1244 BUG_ON(pagelist->length <= sizeof(__le32)); 1245 if (list_is_singular(&pagelist->head)) { 1246 le32_add_cpu((__le32*)pagelist->mapped_tail, 1); 1247 } else { 1248 struct page *page = list_first_entry(&pagelist->head, 1249 struct page, lru); 1250 void *addr = kmap_atomic(page); 1251 le32_add_cpu((__le32*)addr, 1); 1252 kunmap_atomic(addr); 1253 } 1254 } else { 1255 as_ctx->pagelist = pagelist; 1256 } 1257 1258 ceph_pagelist_encode_32(pagelist, name_len); 1259 ceph_pagelist_append(pagelist, name, name_len); 1260 1261 ceph_pagelist_encode_32(pagelist, as_ctx->sec_ctxlen); 1262 ceph_pagelist_append(pagelist, as_ctx->sec_ctx, as_ctx->sec_ctxlen); 1263 1264 err = 0; 1265 out: 1266 if (pagelist && !as_ctx->pagelist) 1267 ceph_pagelist_release(pagelist); 1268 return err; 1269 } 1270 #endif /* CONFIG_CEPH_FS_SECURITY_LABEL */ 1271 #endif /* CONFIG_SECURITY */ 1272 1273 void ceph_release_acl_sec_ctx(struct ceph_acl_sec_ctx *as_ctx) 1274 { 1275 #ifdef CONFIG_CEPH_FS_POSIX_ACL 1276 posix_acl_release(as_ctx->acl); 1277 posix_acl_release(as_ctx->default_acl); 1278 #endif 1279 #ifdef CONFIG_CEPH_FS_SECURITY_LABEL 1280 security_release_secctx(as_ctx->sec_ctx, as_ctx->sec_ctxlen); 1281 #endif 1282 if (as_ctx->pagelist) 1283 ceph_pagelist_release(as_ctx->pagelist); 1284 } 1285 1286 /* 1287 * List of handlers for synthetic system.* attributes. Other 1288 * attributes are handled directly. 1289 */ 1290 const struct xattr_handler *ceph_xattr_handlers[] = { 1291 #ifdef CONFIG_CEPH_FS_POSIX_ACL 1292 &posix_acl_access_xattr_handler, 1293 &posix_acl_default_xattr_handler, 1294 #endif 1295 &ceph_other_xattr_handler, 1296 NULL, 1297 }; 1298