1 // SPDX-License-Identifier: GPL-2.0
25 	bch2_str_hash_update(&ctx, info, &key->type, sizeof(key->type));  in bch2_xattr_hash()
26 	bch2_str_hash_update(&ctx, info, key->name.name, key->name.len);  in bch2_xattr_hash()
41 		 &X_SEARCH(x.v->x_type, x.v->x_name, x.v->x_name_len));  in xattr_hash_bkey()
49 	return l.v->x_type != r->type ||  in xattr_cmp_key()
50 		l.v->x_name_len != r->name.len ||  in xattr_cmp_key()
51 		memcmp(l.v->x_name, r->name.name, r->name.len);  in xattr_cmp_key()
59 	return l.v->x_type != r.v->x_type ||  in xattr_cmp_bkey()
60 		l.v->x_name_len != r.v->x_name_len ||  in xattr_cmp_bkey()
61 		memcmp(l.v->x_name, r.v->x_name, r.v->x_name_len);  in xattr_cmp_bkey()
77 	unsigned val_u64s = xattr_val_u64s(xattr.v->x_name_len,  in bch2_xattr_validate()
78 					   le16_to_cpu(xattr.v->x_val_len));  in bch2_xattr_validate()
87 	val_u64s = xattr_val_u64s(xattr.v->x_name_len,  in bch2_xattr_validate()
88 				  le16_to_cpu(xattr.v->x_val_len) + 4);  in bch2_xattr_validate()
95 	bkey_fsck_err_on(!bch2_xattr_type_to_handler(xattr.v->x_type),  in bch2_xattr_validate()
97 			 "invalid type (%u)", xattr.v->x_type);  in bch2_xattr_validate()
99 	bkey_fsck_err_on(memchr(xattr.v->x_name, '\0', xattr.v->x_name_len),  in bch2_xattr_validate()
101 			 "xattr name has invalid characters");  in bch2_xattr_validate()
112 	handler = bch2_xattr_type_to_handler(xattr.v->x_type);  in bch2_xattr_to_text()
113 	if (handler && handler->prefix)  in bch2_xattr_to_text()
114 		prt_printf(out, "%s", handler->prefix);  in bch2_xattr_to_text()
116 		prt_printf(out, "(type %u)", xattr.v->x_type);  in bch2_xattr_to_text()
118 		prt_printf(out, "(unknown type %u)", xattr.v->x_type);  in bch2_xattr_to_text()
120 	unsigned name_len = xattr.v->x_name_len;  in bch2_xattr_to_text()
121 	unsigned val_len  = le16_to_cpu(xattr.v->x_val_len);  in bch2_xattr_to_text()
122 	unsigned max_name_val_bytes = bkey_val_bytes(xattr.k) -  in bch2_xattr_to_text()
125 	val_len  = min_t(int, val_len, max_name_val_bytes - name_len);  in bch2_xattr_to_text()
129 		   name_len, xattr.v->x_name,  in bch2_xattr_to_text()
132 	if (xattr.v->x_type == KEY_TYPE_XATTR_INDEX_POSIX_ACL_ACCESS ||  in bch2_xattr_to_text()
133 	    xattr.v->x_type == KEY_TYPE_XATTR_INDEX_POSIX_ACL_DEFAULT) {  in bch2_xattr_to_text()
136 				 le16_to_cpu(xattr.v->x_val_len));  in bch2_xattr_to_text()
141 				const char *name, void *buffer, size_t size, int type)  in bch2_xattr_get_trans()  argument
143 	struct bch_hash_info hash = bch2_hash_info_init(trans->c, &inode->ei_inode);  in bch2_xattr_get_trans()
144 	struct xattr_search_key search = X_SEARCH(type, name, strlen(name));  in bch2_xattr_get_trans()
153 	ret = le16_to_cpu(xattr.v->x_val_len);  in bch2_xattr_get_trans()
156 			ret = -ERANGE;  in bch2_xattr_get_trans()
167 		   const char *name, const void *value, size_t size,  in bch2_xattr_set()  argument
170 	struct bch_fs *c = trans->c;  in bch2_xattr_set()
179 	inode_u->bi_ctime = bch2_current_time(c);  in bch2_xattr_set()
189 		unsigned namelen = strlen(name);  in bch2_xattr_set()
194 			return -ERANGE;  in bch2_xattr_set()
200 		bkey_xattr_init(&xattr->k_i);  in bch2_xattr_set()
201 		xattr->k.u64s		= u64s;  in bch2_xattr_set()
202 		xattr->v.x_type		= type;  in bch2_xattr_set()
203 		xattr->v.x_name_len	= namelen;  in bch2_xattr_set()
204 		xattr->v.x_val_len	= cpu_to_le16(size);  in bch2_xattr_set()
205 		memcpy(xattr->v.x_name, name, namelen);  in bch2_xattr_set()
206 		memcpy(xattr_val(&xattr->v), value, size);  in bch2_xattr_set()
209 			      inum, &xattr->k_i,  in bch2_xattr_set()
214 			X_SEARCH(type, name, strlen(name));  in bch2_xattr_set()
221 		ret = flags & XATTR_REPLACE ? -ENODATA : 0;  in bch2_xattr_set()
232 static int __bch2_xattr_emit(const char *prefix,  in __bch2_xattr_emit()  argument
233 			     const char *name, size_t name_len,  in __bch2_xattr_emit()  argument
236 	const size_t prefix_len = strlen(prefix);  in __bch2_xattr_emit()
239 	if (buf->buf) {  in __bch2_xattr_emit()
240 		if (buf->used + total_len > buf->len)  in __bch2_xattr_emit()
241 			return -ERANGE;  in __bch2_xattr_emit()
243 		memcpy(buf->buf + buf->used, prefix, prefix_len);  in __bch2_xattr_emit()
244 		memcpy(buf->buf + buf->used + prefix_len,  in __bch2_xattr_emit()
245 		       name, name_len);  in __bch2_xattr_emit()
246 		buf->buf[buf->used + prefix_len + name_len] = '\0';  in __bch2_xattr_emit()
249 	buf->used += total_len;  in __bch2_xattr_emit()
267 	const char *prefix;  in bch2_xattr_emit()  local
269 	prefix = bch2_xattr_prefix(xattr->x_type, dentry);  in bch2_xattr_emit()
270 	if (!prefix)  in bch2_xattr_emit()
273 	return __bch2_xattr_emit(prefix, xattr->x_name, xattr->x_name_len, buf);  in bch2_xattr_emit()
281 	const char *prefix = all ? "bcachefs_effective." : "bcachefs.";  in bch2_xattr_list_bcachefs()  local
292 		    !(inode->bi_fields_set & (1 << id)))  in bch2_xattr_list_bcachefs()
295 		ret = __bch2_xattr_emit(prefix, bch2_inode_opts[id],  in bch2_xattr_list_bcachefs()
306 	struct bch_fs *c = dentry->d_sb->s_fs_info;  in bch2_xattr_list()
307 	struct bch_inode_info *inode = to_bch_ei(dentry->d_inode);  in bch2_xattr_list()
309 	u64 offset = 0, inum = inode->ei_inode.bi_inum;  in bch2_xattr_list()
315 				   inode->ei_inum.subvol, 0, k, ({  in bch2_xattr_list()
316 			if (k.k->type != KEY_TYPE_xattr)  in bch2_xattr_list()
321 		bch2_xattr_list_bcachefs(c, &inode->ei_inode, &buf, false) ?:  in bch2_xattr_list()
322 		bch2_xattr_list_bcachefs(c, &inode->ei_inode, &buf, true);  in bch2_xattr_list()
329 				  const char *name, void *buffer, size_t size)  in bch2_xattr_get_handler()  argument
332 	struct bch_fs *c = inode->v.i_sb->s_fs_info;  in bch2_xattr_get_handler()
334 		bch2_xattr_get_trans(trans, inode, name, buffer, size, handler->flags));  in bch2_xattr_get_handler()
337 		ret = -ENODATA;  in bch2_xattr_get_handler()
345 				  const char *name, const void *value,  in bch2_xattr_set_handler()  argument
349 	struct bch_fs *c = inode->v.i_sb->s_fs_info;  in bch2_xattr_set_handler()
350 	struct bch_hash_info hash = bch2_hash_info_init(c, &inode->ei_inode);  in bch2_xattr_set_handler()
357 				       &hash, name, value, size,  in bch2_xattr_set_handler()
358 				       handler->flags, flags)) ?:  in bch2_xattr_set_handler()
365 	.prefix	= XATTR_USER_PREFIX,
377 	.prefix	= XATTR_TRUSTED_PREFIX,
385 	.prefix	= XATTR_SECURITY_PREFIX,
396 #define x(name, ...)				\  in opt_to_inode_opt()  argument
397 	case Opt_##name: return Inode_opt_##name;  in opt_to_inode_opt()
401 		return -1;  in opt_to_inode_opt()
407 				const char *name, void *buffer, size_t size,  in __bch2_xattr_bcachefs_get()  argument
411 	struct bch_fs *c = inode->v.i_sb->s_fs_info;  in __bch2_xattr_bcachefs_get()
413 		bch2_inode_opts_to_opts(&inode->ei_inode);  in __bch2_xattr_bcachefs_get()
420 	id = bch2_opt_lookup(name);  in __bch2_xattr_bcachefs_get()
422 		return -EINVAL;  in __bch2_xattr_bcachefs_get()
426 		return -EINVAL;  in __bch2_xattr_bcachefs_get()
431 		return -ENODATA;  in __bch2_xattr_bcachefs_get()
434 	    !(inode->ei_inode.bi_fields_set & (1 << inode_opt_id)))  in __bch2_xattr_bcachefs_get()
435 		return -ENODATA;  in __bch2_xattr_bcachefs_get()
438 	bch2_opt_to_text(&out, c, c->disk_sb.sb, opt, v, 0);  in __bch2_xattr_bcachefs_get()
443 		ret = -ENOMEM;  in __bch2_xattr_bcachefs_get()
446 			ret = -ERANGE;  in __bch2_xattr_bcachefs_get()
457 				   const char *name, void *buffer, size_t size)  in bch2_xattr_bcachefs_get()  argument
460 					 name, buffer, size, false);  in bch2_xattr_bcachefs_get()
476 	if (s->defined)  in inode_opt_set_fn()
477 		bi->bi_fields_set |= 1U << s->id;  in inode_opt_set_fn()
479 		bi->bi_fields_set &= ~(1U << s->id);  in inode_opt_set_fn()
481 	bch2_inode_opt_set(bi, s->id, s->v);  in inode_opt_set_fn()
489 				   const char *name, const void *value,  in bch2_xattr_bcachefs_set()  argument
493 	struct bch_fs *c = inode->v.i_sb->s_fs_info;  in bch2_xattr_bcachefs_set()
499 	opt_id = bch2_opt_lookup(name);  in bch2_xattr_bcachefs_set()
501 		return -EINVAL;  in bch2_xattr_bcachefs_set()
507 		return -EINVAL;  in bch2_xattr_bcachefs_set()
516 			return -ENOMEM;  in bch2_xattr_bcachefs_set()
534 		 * Check if this option was set on the parent - if so, switched  in bch2_xattr_bcachefs_set()
538 		 * to date - see bch2_reinherit_attrs()  in bch2_xattr_bcachefs_set()
540 		spin_lock(&dentry->d_lock);  in bch2_xattr_bcachefs_set()
543 				to_bch_ei(d_inode(dentry->d_parent));  in bch2_xattr_bcachefs_set()
545 			s.v = bch2_inode_opt_get(&dir->ei_inode, inode_opt_id);  in bch2_xattr_bcachefs_set()
549 		spin_unlock(&dentry->d_lock);  in bch2_xattr_bcachefs_set()
554 	mutex_lock(&inode->ei_update_lock);  in bch2_xattr_bcachefs_set()
560 		ret = bch2_set_projid(c, inode, s.v ? s.v - 1 : 0);  in bch2_xattr_bcachefs_set()
567 	mutex_unlock(&inode->ei_update_lock);  in bch2_xattr_bcachefs_set()
573 	.prefix	= "bcachefs.",
581 				const char *name, void *buffer, size_t size)  in bch2_xattr_bcachefs_get_effective()  argument
584 					 name, buffer, size, true);  in bch2_xattr_bcachefs_get_effective()
587 /* Noop - xattrs in the bcachefs_effective namespace are inherited */
591 				   const char *name, const void *value,  in bch2_xattr_bcachefs_set_effective()  argument
598 	.prefix	= "bcachefs_effective.",