fs/bcachefs/xattr.c

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3 #include "bcachefs.h"
   4 #include "acl.h"
   5 #include "bkey_methods.h"
   6 #include "btree_update.h"
   7 #include "extents.h"
   8 #include "fs.h"
   9 #include "rebalance.h"
  10 #include "str_hash.h"
  11 #include "xattr.h"
  12
  13 #include <linux/dcache.h>
  14 #include <linux/posix_acl_xattr.h>
  15 #include <linux/xattr.h>
  16
  17 static const struct xattr_handler *bch2_xattr_type_to_handler(unsigned);
  18
  19 static u64 bch2_xattr_hash(const struct bch_hash_info *info,
  20                           const struct xattr_search_key *key)
  21 {
  22         struct bch_str_hash_ctx ctx;
  23
  24         bch2_str_hash_init(&ctx, info);
  25         bch2_str_hash_update(&ctx, info, &key->type, sizeof(key->type));
  26         bch2_str_hash_update(&ctx, info, key->name.name, key->name.len);
  27
  28         return bch2_str_hash_end(&ctx, info);
  29 }
  30
  31 static u64 xattr_hash_key(const struct bch_hash_info *info, const void *key)
  32 {
  33         return bch2_xattr_hash(info, key);
  34 }
  35
  36 static u64 xattr_hash_bkey(const struct bch_hash_info *info, struct bkey_s_c k)
  37 {
  38         struct bkey_s_c_xattr x = bkey_s_c_to_xattr(k);
  39
  40         return bch2_xattr_hash(info,
  41                  &X_SEARCH(x.v->x_type, x.v->x_name, x.v->x_name_len));
  42 }
  43
  44 static bool xattr_cmp_key(struct bkey_s_c _l, const void *_r)
  45 {
  46         struct bkey_s_c_xattr l = bkey_s_c_to_xattr(_l);
  47         const struct xattr_search_key *r = _r;
  48
  49         return l.v->x_type != r->type ||
  50                 l.v->x_name_len != r->name.len ||
  51                 memcmp(l.v->x_name, r->name.name, r->name.len);
  52 }
  53
  54 static bool xattr_cmp_bkey(struct bkey_s_c _l, struct bkey_s_c _r)
  55 {
  56         struct bkey_s_c_xattr l = bkey_s_c_to_xattr(_l);
  57         struct bkey_s_c_xattr r = bkey_s_c_to_xattr(_r);
  58
  59         return l.v->x_type != r.v->x_type ||
  60                 l.v->x_name_len != r.v->x_name_len ||
  61                 memcmp(l.v->x_name, r.v->x_name, r.v->x_name_len);
  62 }
  63
  64 const struct bch_hash_desc bch2_xattr_hash_desc = {
  65         .btree_id       = BTREE_ID_xattrs,
  66         .key_type       = KEY_TYPE_xattr,
  67         .hash_key       = xattr_hash_key,
  68         .hash_bkey      = xattr_hash_bkey,
  69         .cmp_key        = xattr_cmp_key,
  70         .cmp_bkey       = xattr_cmp_bkey,
  71 };
  72
  73 int bch2_xattr_validate(struct bch_fs *c, struct bkey_s_c k,
  74                        enum bch_validate_flags flags)
  75 {
  76         struct bkey_s_c_xattr xattr = bkey_s_c_to_xattr(k);
  77         unsigned val_u64s = xattr_val_u64s(xattr.v->x_name_len,
  78                                            le16_to_cpu(xattr.v->x_val_len));
  79         int ret = 0;
  80
  81         bkey_fsck_err_on(bkey_val_u64s(k.k) < val_u64s,
  82                          c, xattr_val_size_too_small,
  83                          "value too small (%zu < %u)",
  84                          bkey_val_u64s(k.k), val_u64s);
  85
  86         /* XXX why +4 ? */
  87         val_u64s = xattr_val_u64s(xattr.v->x_name_len,
  88                                   le16_to_cpu(xattr.v->x_val_len) + 4);
  89
  90         bkey_fsck_err_on(bkey_val_u64s(k.k) > val_u64s,
  91                          c, xattr_val_size_too_big,
  92                          "value too big (%zu > %u)",
  93                          bkey_val_u64s(k.k), val_u64s);
  94
  95         bkey_fsck_err_on(!bch2_xattr_type_to_handler(xattr.v->x_type),
  96                          c, xattr_invalid_type,
  97                          "invalid type (%u)", xattr.v->x_type);
  98
  99         bkey_fsck_err_on(memchr(xattr.v->x_name, '\0', xattr.v->x_name_len),
 100                          c, xattr_name_invalid_chars,
 101                          "xattr name has invalid characters");
 102 fsck_err:
 103         return ret;
 104 }
 105
 106 void bch2_xattr_to_text(struct printbuf *out, struct bch_fs *c,
 107                         struct bkey_s_c k)
 108 {
 109         const struct xattr_handler *handler;
 110         struct bkey_s_c_xattr xattr = bkey_s_c_to_xattr(k);
 111
 112         handler = bch2_xattr_type_to_handler(xattr.v->x_type);
 113         if (handler && handler->prefix)
 114                 prt_printf(out, "%s", handler->prefix);
 115         else if (handler)
 116                 prt_printf(out, "(type %u)", xattr.v->x_type);
 117         else
 118                 prt_printf(out, "(unknown type %u)", xattr.v->x_type);
 119
 120         unsigned name_len = xattr.v->x_name_len;
 121         unsigned val_len  = le16_to_cpu(xattr.v->x_val_len);
 122         unsigned max_name_val_bytes = bkey_val_bytes(xattr.k) -
 123                 offsetof(struct bch_xattr, x_name);
 124
 125         val_len  = min_t(int, val_len, max_name_val_bytes - name_len);
 126         name_len = min(name_len, max_name_val_bytes);
 127
 128         prt_printf(out, "%.*s:%.*s",
 129                    name_len, xattr.v->x_name,
 130                    val_len,  (char *) xattr_val(xattr.v));
 131
 132         if (xattr.v->x_type == KEY_TYPE_XATTR_INDEX_POSIX_ACL_ACCESS ||
 133             xattr.v->x_type == KEY_TYPE_XATTR_INDEX_POSIX_ACL_DEFAULT) {
 134                 prt_char(out, ' ');
 135                 bch2_acl_to_text(out, xattr_val(xattr.v),
 136                                  le16_to_cpu(xattr.v->x_val_len));
 137         }
 138 }
 139
 140 static int bch2_xattr_get_trans(struct btree_trans *trans, struct bch_inode_info *inode,
 141                                 const char *name, void *buffer, size_t size, int type)
 142 {
 143         struct bch_hash_info hash = bch2_hash_info_init(trans->c, &inode->ei_inode);
 144         struct xattr_search_key search = X_SEARCH(type, name, strlen(name));
 145         struct btree_iter iter;
 146         struct bkey_s_c k = bch2_hash_lookup(trans, &iter, bch2_xattr_hash_desc, &hash,
 147                                              inode_inum(inode), &search, 0);
 148         int ret = bkey_err(k);
 149         if (ret)
 150                 return ret;
 151
 152         struct bkey_s_c_xattr xattr = bkey_s_c_to_xattr(k);
 153         ret = le16_to_cpu(xattr.v->x_val_len);
 154         if (buffer) {
 155                 if (ret > size)
 156                         ret = -ERANGE;
 157                 else
 158                         memcpy(buffer, xattr_val(xattr.v), ret);
 159         }
 160         bch2_trans_iter_exit(trans, &iter);
 161         return ret;
 162 }
 163
 164 int bch2_xattr_set(struct btree_trans *trans, subvol_inum inum,
 165                    struct bch_inode_unpacked *inode_u,
 166                    const struct bch_hash_info *hash_info,
 167                    const char *name, const void *value, size_t size,
 168                    int type, int flags)
 169 {
 170         struct bch_fs *c = trans->c;
 171         struct btree_iter inode_iter = { NULL };
 172         int ret;
 173
 174         ret   = bch2_subvol_is_ro_trans(trans, inum.subvol) ?:
 175                 bch2_inode_peek(trans, &inode_iter, inode_u, inum, BTREE_ITER_intent);
 176         if (ret)
 177                 return ret;
 178
 179         inode_u->bi_ctime = bch2_current_time(c);
 180
 181         ret = bch2_inode_write(trans, &inode_iter, inode_u);
 182         bch2_trans_iter_exit(trans, &inode_iter);
 183
 184         if (ret)
 185                 return ret;
 186
 187         if (value) {
 188                 struct bkey_i_xattr *xattr;
 189                 unsigned namelen = strlen(name);
 190                 unsigned u64s = BKEY_U64s +
 191                         xattr_val_u64s(namelen, size);
 192
 193                 if (u64s > U8_MAX)
 194                         return -ERANGE;
 195
 196                 xattr = bch2_trans_kmalloc(trans, u64s * sizeof(u64));
 197                 if (IS_ERR(xattr))
 198                         return PTR_ERR(xattr);
 199
 200                 bkey_xattr_init(&xattr->k_i);
 201                 xattr->k.u64s           = u64s;
 202                 xattr->v.x_type         = type;
 203                 xattr->v.x_name_len     = namelen;
 204                 xattr->v.x_val_len      = cpu_to_le16(size);
 205                 memcpy(xattr->v.x_name, name, namelen);
 206                 memcpy(xattr_val(&xattr->v), value, size);
 207
 208                 ret = bch2_hash_set(trans, bch2_xattr_hash_desc, hash_info,
 209                               inum, &xattr->k_i,
 210                               (flags & XATTR_CREATE ? STR_HASH_must_create : 0)|
 211                               (flags & XATTR_REPLACE ? STR_HASH_must_replace : 0));
 212         } else {
 213                 struct xattr_search_key search =
 214                         X_SEARCH(type, name, strlen(name));
 215
 216                 ret = bch2_hash_delete(trans, bch2_xattr_hash_desc,
 217                                        hash_info, inum, &search);
 218         }
 219
 220         if (bch2_err_matches(ret, ENOENT))
 221                 ret = flags & XATTR_REPLACE ? -ENODATA : 0;
 222
 223         return ret;
 224 }
 225
 226 struct xattr_buf {
 227         char            *buf;
 228         size_t          len;
 229         size_t          used;
 230 };
 231
 232 static int __bch2_xattr_emit(const char *prefix,
 233                              const char *name, size_t name_len,
 234                              struct xattr_buf *buf)
 235 {
 236         const size_t prefix_len = strlen(prefix);
 237         const size_t total_len = prefix_len + name_len + 1;
 238
 239         if (buf->buf) {
 240                 if (buf->used + total_len > buf->len)
 241                         return -ERANGE;
 242
 243                 memcpy(buf->buf + buf->used, prefix, prefix_len);
 244                 memcpy(buf->buf + buf->used + prefix_len,
 245                        name, name_len);
 246                 buf->buf[buf->used + prefix_len + name_len] = '\0';
 247         }
 248
 249         buf->used += total_len;
 250         return 0;
 251 }
 252
 253 static inline const char *bch2_xattr_prefix(unsigned type, struct dentry *dentry)
 254 {
 255         const struct xattr_handler *handler = bch2_xattr_type_to_handler(type);
 256
 257         if (!xattr_handler_can_list(handler, dentry))
 258                 return NULL;
 259
 260         return xattr_prefix(handler);
 261 }
 262
 263 static int bch2_xattr_emit(struct dentry *dentry,
 264                             const struct bch_xattr *xattr,
 265                             struct xattr_buf *buf)
 266 {
 267         const char *prefix;
 268
 269         prefix = bch2_xattr_prefix(xattr->x_type, dentry);
 270         if (!prefix)
 271                 return 0;
 272
 273         return __bch2_xattr_emit(prefix, xattr->x_name, xattr->x_name_len, buf);
 274 }
 275
 276 static int bch2_xattr_list_bcachefs(struct bch_fs *c,
 277                                     struct bch_inode_unpacked *inode,
 278                                     struct xattr_buf *buf,
 279                                     bool all)
 280 {
 281         const char *prefix = all ? "bcachefs_effective." : "bcachefs.";
 282         unsigned id;
 283         int ret = 0;
 284         u64 v;
 285
 286         for (id = 0; id < Inode_opt_nr; id++) {
 287                 v = bch2_inode_opt_get(inode, id);
 288                 if (!v)
 289                         continue;
 290
 291                 if (!all &&
 292                     !(inode->bi_fields_set & (1 << id)))
 293                         continue;
 294
 295                 ret = __bch2_xattr_emit(prefix, bch2_inode_opts[id],
 296                                         strlen(bch2_inode_opts[id]), buf);
 297                 if (ret)
 298                         break;
 299         }
 300
 301         return ret;
 302 }
 303
 304 ssize_t bch2_xattr_list(struct dentry *dentry, char *buffer, size_t buffer_size)
 305 {
 306         struct bch_fs *c = dentry->d_sb->s_fs_info;
 307         struct bch_inode_info *inode = to_bch_ei(dentry->d_inode);
 308         struct xattr_buf buf = { .buf = buffer, .len = buffer_size };
 309         u64 offset = 0, inum = inode->ei_inode.bi_inum;
 310
 311         int ret = bch2_trans_run(c,
 312                 for_each_btree_key_in_subvolume_upto(trans, iter, BTREE_ID_xattrs,
 313                                    POS(inum, offset),
 314                                    POS(inum, U64_MAX),
 315                                    inode->ei_inum.subvol, 0, k, ({
 316                         if (k.k->type != KEY_TYPE_xattr)
 317                                 continue;
 318
 319                         bch2_xattr_emit(dentry, bkey_s_c_to_xattr(k).v, &buf);
 320                 }))) ?:
 321                 bch2_xattr_list_bcachefs(c, &inode->ei_inode, &buf, false) ?:
 322                 bch2_xattr_list_bcachefs(c, &inode->ei_inode, &buf, true);
 323
 324         return ret ? bch2_err_class(ret) : buf.used;
 325 }
 326
 327 static int bch2_xattr_get_handler(const struct xattr_handler *handler,
 328                                   struct dentry *dentry, struct inode *vinode,
 329                                   const char *name, void *buffer, size_t size)
 330 {
 331         struct bch_inode_info *inode = to_bch_ei(vinode);
 332         struct bch_fs *c = inode->v.i_sb->s_fs_info;
 333         int ret = bch2_trans_do(c,
 334                 bch2_xattr_get_trans(trans, inode, name, buffer, size, handler->flags));
 335
 336         if (ret < 0 && bch2_err_matches(ret, ENOENT))
 337                 ret = -ENODATA;
 338
 339         return bch2_err_class(ret);
 340 }
 341
 342 static int bch2_xattr_set_handler(const struct xattr_handler *handler,
 343                                   struct mnt_idmap *idmap,
 344                                   struct dentry *dentry, struct inode *vinode,
 345                                   const char *name, const void *value,
 346                                   size_t size, int flags)
 347 {
 348         struct bch_inode_info *inode = to_bch_ei(vinode);
 349         struct bch_fs *c = inode->v.i_sb->s_fs_info;
 350         struct bch_hash_info hash = bch2_hash_info_init(c, &inode->ei_inode);
 351         struct bch_inode_unpacked inode_u;
 352         int ret;
 353
 354         ret = bch2_trans_run(c,
 355                 commit_do(trans, NULL, NULL, 0,
 356                         bch2_xattr_set(trans, inode_inum(inode), &inode_u,
 357                                        &hash, name, value, size,
 358                                        handler->flags, flags)) ?:
 359                 (bch2_inode_update_after_write(trans, inode, &inode_u, ATTR_CTIME), 0));
 360
 361         return bch2_err_class(ret);
 362 }
 363
 364 static const struct xattr_handler bch_xattr_user_handler = {
 365         .prefix = XATTR_USER_PREFIX,
 366         .get    = bch2_xattr_get_handler,
 367         .set    = bch2_xattr_set_handler,
 368         .flags  = KEY_TYPE_XATTR_INDEX_USER,
 369 };
 370
 371 static bool bch2_xattr_trusted_list(struct dentry *dentry)
 372 {
 373         return capable(CAP_SYS_ADMIN);
 374 }
 375
 376 static const struct xattr_handler bch_xattr_trusted_handler = {
 377         .prefix = XATTR_TRUSTED_PREFIX,
 378         .list   = bch2_xattr_trusted_list,
 379         .get    = bch2_xattr_get_handler,
 380         .set    = bch2_xattr_set_handler,
 381         .flags  = KEY_TYPE_XATTR_INDEX_TRUSTED,
 382 };
 383
 384 static const struct xattr_handler bch_xattr_security_handler = {
 385         .prefix = XATTR_SECURITY_PREFIX,
 386         .get    = bch2_xattr_get_handler,
 387         .set    = bch2_xattr_set_handler,
 388         .flags  = KEY_TYPE_XATTR_INDEX_SECURITY,
 389 };
 390
 391 #ifndef NO_BCACHEFS_FS
 392
 393 static int opt_to_inode_opt(int id)
 394 {
 395         switch (id) {
 396 #define x(name, ...)                            \
 397         case Opt_##name: return Inode_opt_##name;
 398         BCH_INODE_OPTS()
 399 #undef  x
 400         default:
 401                 return -1;
 402         }
 403 }
 404
 405 static int __bch2_xattr_bcachefs_get(const struct xattr_handler *handler,
 406                                 struct dentry *dentry, struct inode *vinode,
 407                                 const char *name, void *buffer, size_t size,
 408                                 bool all)
 409 {
 410         struct bch_inode_info *inode = to_bch_ei(vinode);
 411         struct bch_fs *c = inode->v.i_sb->s_fs_info;
 412         struct bch_opts opts =
 413                 bch2_inode_opts_to_opts(&inode->ei_inode);
 414         const struct bch_option *opt;
 415         int id, inode_opt_id;
 416         struct printbuf out = PRINTBUF;
 417         int ret;
 418         u64 v;
 419
 420         id = bch2_opt_lookup(name);
 421         if (id < 0 || !bch2_opt_is_inode_opt(id))
 422                 return -EINVAL;
 423
 424         inode_opt_id = opt_to_inode_opt(id);
 425         if (inode_opt_id < 0)
 426                 return -EINVAL;
 427
 428         opt = bch2_opt_table + id;
 429
 430         if (!bch2_opt_defined_by_id(&opts, id))
 431                 return -ENODATA;
 432
 433         if (!all &&
 434             !(inode->ei_inode.bi_fields_set & (1 << inode_opt_id)))
 435                 return -ENODATA;
 436
 437         v = bch2_opt_get_by_id(&opts, id);
 438         bch2_opt_to_text(&out, c, c->disk_sb.sb, opt, v, 0);
 439
 440         ret = out.pos;
 441
 442         if (out.allocation_failure) {
 443                 ret = -ENOMEM;
 444         } else if (buffer) {
 445                 if (out.pos > size)
 446                         ret = -ERANGE;
 447                 else
 448                         memcpy(buffer, out.buf, out.pos);
 449         }
 450
 451         printbuf_exit(&out);
 452         return ret;
 453 }
 454
 455 static int bch2_xattr_bcachefs_get(const struct xattr_handler *handler,
 456                                    struct dentry *dentry, struct inode *vinode,
 457                                    const char *name, void *buffer, size_t size)
 458 {
 459         return __bch2_xattr_bcachefs_get(handler, dentry, vinode,
 460                                          name, buffer, size, false);
 461 }
 462
 463 struct inode_opt_set {
 464         int                     id;
 465         u64                     v;
 466         bool                    defined;
 467 };
 468
 469 static int inode_opt_set_fn(struct btree_trans *trans,
 470                             struct bch_inode_info *inode,
 471                             struct bch_inode_unpacked *bi,
 472                             void *p)
 473 {
 474         struct inode_opt_set *s = p;
 475
 476         if (s->defined)
 477                 bi->bi_fields_set |= 1U << s->id;
 478         else
 479                 bi->bi_fields_set &= ~(1U << s->id);
 480
 481         bch2_inode_opt_set(bi, s->id, s->v);
 482
 483         return 0;
 484 }
 485
 486 static int bch2_xattr_bcachefs_set(const struct xattr_handler *handler,
 487                                    struct mnt_idmap *idmap,
 488                                    struct dentry *dentry, struct inode *vinode,
 489                                    const char *name, const void *value,
 490                                    size_t size, int flags)
 491 {
 492         struct bch_inode_info *inode = to_bch_ei(vinode);
 493         struct bch_fs *c = inode->v.i_sb->s_fs_info;
 494         const struct bch_option *opt;
 495         char *buf;
 496         struct inode_opt_set s;
 497         int opt_id, inode_opt_id, ret;
 498
 499         opt_id = bch2_opt_lookup(name);
 500         if (opt_id < 0)
 501                 return -EINVAL;
 502
 503         opt = bch2_opt_table + opt_id;
 504
 505         inode_opt_id = opt_to_inode_opt(opt_id);
 506         if (inode_opt_id < 0)
 507                 return -EINVAL;
 508
 509         s.id = inode_opt_id;
 510
 511         if (value) {
 512                 u64 v = 0;
 513
 514                 buf = kmalloc(size + 1, GFP_KERNEL);
 515                 if (!buf)
 516                         return -ENOMEM;
 517                 memcpy(buf, value, size);
 518                 buf[size] = '\0';
 519
 520                 ret = bch2_opt_parse(c, opt, buf, &v, NULL);
 521                 kfree(buf);
 522
 523                 if (ret < 0)
 524                         goto err_class_exit;
 525
 526                 ret = bch2_opt_check_may_set(c, opt_id, v);
 527                 if (ret < 0)
 528                         goto err_class_exit;
 529
 530                 s.v = v + 1;
 531                 s.defined = true;
 532         } else {
 533                 /*
 534                  * Check if this option was set on the parent - if so, switched
 535                  * back to inheriting from the parent:
 536                  *
 537                  * rename() also has to deal with keeping inherited options up
 538                  * to date - see bch2_reinherit_attrs()
 539                  */
 540                 spin_lock(&dentry->d_lock);
 541                 if (!IS_ROOT(dentry)) {
 542                         struct bch_inode_info *dir =
 543                                 to_bch_ei(d_inode(dentry->d_parent));
 544
 545                         s.v = bch2_inode_opt_get(&dir->ei_inode, inode_opt_id);
 546                 } else {
 547                         s.v = 0;
 548                 }
 549                 spin_unlock(&dentry->d_lock);
 550
 551                 s.defined = false;
 552         }
 553
 554         mutex_lock(&inode->ei_update_lock);
 555         if (inode_opt_id == Inode_opt_project) {
 556                 /*
 557                  * inode fields accessible via the xattr interface are stored
 558                  * with a +1 bias, so that 0 means unset:
 559                  */
 560                 ret = bch2_set_projid(c, inode, s.v ? s.v - 1 : 0);
 561                 if (ret)
 562                         goto err;
 563         }
 564
 565         ret = bch2_write_inode(c, inode, inode_opt_set_fn, &s, 0);
 566 err:
 567         mutex_unlock(&inode->ei_update_lock);
 568
 569         if (value &&
 570             (opt_id == Opt_background_target ||
 571              opt_id == Opt_background_compression ||
 572              (opt_id == Opt_compression && !inode_opt_get(c, &inode->ei_inode, background_compression))))
 573                 bch2_set_rebalance_needs_scan(c, inode->ei_inode.bi_inum);
 574
 575 err_class_exit:
 576         return bch2_err_class(ret);
 577 }
 578
 579 static const struct xattr_handler bch_xattr_bcachefs_handler = {
 580         .prefix = "bcachefs.",
 581         .get    = bch2_xattr_bcachefs_get,
 582         .set    = bch2_xattr_bcachefs_set,
 583 };
 584
 585 static int bch2_xattr_bcachefs_get_effective(
 586                                 const struct xattr_handler *handler,
 587                                 struct dentry *dentry, struct inode *vinode,
 588                                 const char *name, void *buffer, size_t size)
 589 {
 590         return __bch2_xattr_bcachefs_get(handler, dentry, vinode,
 591                                          name, buffer, size, true);
 592 }
 593
 594 /* Noop - xattrs in the bcachefs_effective namespace are inherited */
 595 static int bch2_xattr_bcachefs_set_effective(const struct xattr_handler *handler,
 596                                    struct mnt_idmap *idmap,
 597                                    struct dentry *dentry, struct inode *vinode,
 598                                    const char *name, const void *value,
 599                                    size_t size, int flags)
 600 {
 601         return 0;
 602 }
 603
 604 static const struct xattr_handler bch_xattr_bcachefs_effective_handler = {
 605         .prefix = "bcachefs_effective.",
 606         .get    = bch2_xattr_bcachefs_get_effective,
 607         .set    = bch2_xattr_bcachefs_set_effective,
 608 };
 609
 610 #endif /* NO_BCACHEFS_FS */
 611
 612 const struct xattr_handler *bch2_xattr_handlers[] = {
 613         &bch_xattr_user_handler,
 614         &bch_xattr_trusted_handler,
 615         &bch_xattr_security_handler,
 616 #ifndef NO_BCACHEFS_FS
 617         &bch_xattr_bcachefs_handler,
 618         &bch_xattr_bcachefs_effective_handler,
 619 #endif
 620         NULL
 621 };
 622
 623 static const struct xattr_handler *bch_xattr_handler_map[] = {
 624         [KEY_TYPE_XATTR_INDEX_USER]                     = &bch_xattr_user_handler,
 625         [KEY_TYPE_XATTR_INDEX_POSIX_ACL_ACCESS] =
 626                 &nop_posix_acl_access,
 627         [KEY_TYPE_XATTR_INDEX_POSIX_ACL_DEFAULT]        =
 628                 &nop_posix_acl_default,
 629         [KEY_TYPE_XATTR_INDEX_TRUSTED]          = &bch_xattr_trusted_handler,
 630         [KEY_TYPE_XATTR_INDEX_SECURITY]         = &bch_xattr_security_handler,
 631 };
 632
 633 static const struct xattr_handler *bch2_xattr_type_to_handler(unsigned type)
 634 {
 635         return type < ARRAY_SIZE(bch_xattr_handler_map)
 636                 ? bch_xattr_handler_map[type]
 637                 : NULL;
 638 }