4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/mdt/mdt_internal.h
34 * Lustre Metadata Target (mdt) request handler
36 * Author: Peter Braam <braam@clusterfs.com>
37 * Author: Andreas Dilger <adilger@clusterfs.com>
38 * Author: Phil Schwan <phil@clusterfs.com>
39 * Author: Mike Shaver <shaver@clusterfs.com>
40 * Author: Nikita Danilov <nikita@clusterfs.com>
41 * Author: Huang Hua <huanghua@clusterfs.com>
44 #ifndef _MDT_INTERNAL_H
45 #define _MDT_INTERNAL_H
47 #include <libcfs/libcfs.h>
48 #include <libcfs/libcfs_hash.h>
49 #include <upcall_cache.h>
50 #include <obd_class.h>
51 #include <lustre_disk.h>
52 #include <lu_target.h>
53 #include <md_object.h>
54 #include <lustre_fid.h>
55 #include <lustre_fld.h>
56 #include <lustre_req_layout.h>
57 #include <lustre_sec.h>
58 #include <lustre_idmap.h>
59 #include <lustre_eacl.h>
60 #include <lustre_quota.h>
61 #include <lustre_linkea.h>
65 /* file data for open files on MDS */
66 struct mdt_file_data {
67 /** portals handle must be first */
68 struct portals_handle mfd_open_handle;
69 /* export data of portals_handle */
70 const struct mdt_export_data *mfd_owner;
71 /** open mode provided by client */
73 /** protected by med_open_lock */
74 struct list_head mfd_list;
75 /** xid of the open request */
77 /** old handle in replay case */
78 struct lustre_handle mfd_open_handle_old;
79 /** point to opened object */
80 struct mdt_object *mfd_object;
83 #define CDT_NONBLOCKING_RESTORE (1ULL << 0)
84 #define CDT_NORETRY_ACTION (1ULL << 1)
85 #define CDT_POLICY_LAST CDT_NORETRY_ACTION
86 #define CDT_POLICY_SHIFT_COUNT 2
87 #define CDT_POLICY_ALL (CDT_NONBLOCKING_RESTORE | \
90 /* when adding a new policy, do not forget to update
91 * lustre/mdt/mdt_coordinator.c::hsm_policy_names[]
93 #define CDT_DEFAULT_POLICY CDT_NORETRY_ACTION
95 /* Coordinator states. Keep the cdt_transition table in sync. */
96 enum cdt_states { CDT_STOPPED = 0,
105 static inline char *cdt_mdt_state2str(int state)
123 /* when multiple lock are needed, the lock order is
131 wait_queue_head_t cdt_waitq; /**< cdt wait queue */
132 bool cdt_event; /**< coordinator event */
133 struct task_struct *cdt_task; /**< cdt thread handle */
134 struct lu_env cdt_env; /**< coordinator lustre
136 struct lu_context cdt_session; /** session for lu_ucred */
137 struct dentry *cdt_debugfs_dir; /**< cdt debugfs directory */
138 struct completion cdt_kobj_unregister;
139 struct kobject cdt_hsm_kobj; /* hsm sysfs object */
140 __u64 cdt_policy; /**< policy flags */
141 enum cdt_states cdt_state; /**< state */
142 struct mutex cdt_state_lock; /**< cdt_state lock */
143 __u64 cdt_last_cookie; /**< last cookie
145 struct rw_semaphore cdt_llog_lock; /**< protect llog
147 struct rw_semaphore cdt_agent_lock; /**< protect agent list */
148 struct rw_semaphore cdt_request_lock; /**< protect request
150 struct mutex cdt_restore_lock; /**< protect restore
152 timeout_t cdt_loop_period; /**< llog scan period */
153 timeout_t cdt_grace_delay; /**< request grace
155 timeout_t cdt_active_req_timeout; /**< request timeout */
156 __u32 cdt_default_archive_id; /**< archive id used
159 u64 cdt_max_requests; /**< max count of started
161 /** Current count of active requests */
162 atomic_t cdt_request_count; /** total */
163 atomic_t cdt_archive_count;
164 atomic_t cdt_restore_count;
165 atomic_t cdt_remove_count;
167 /* started requests (struct cdt_agent_req:car_cookie_hash)
168 * indexed by cookie */
169 struct cfs_hash *cdt_request_cookie_hash;
170 /* started requests (struct cdt_agent_req:car_request_list) */
171 struct list_head cdt_request_list;
172 struct list_head cdt_agents; /**< list of register
174 struct list_head cdt_restore_handle_list;
176 /* Hash of cookies to locations of record locations in agent
178 struct cfs_hash *cdt_agent_record_hash;
180 /* Bitmasks indexed by the HSMA_XXX constants. */
181 __u64 cdt_user_request_mask;
182 __u64 cdt_group_request_mask;
183 __u64 cdt_other_request_mask;
185 /* Remove archive on last unlink policy */
186 bool cdt_remove_archive_on_last_unlink;
188 bool cdt_wakeup_coordinator;
191 /* mdt state flag bits */
192 #define MDT_FL_CFGLOG 0
193 #define MDT_FL_SYNCED 1
195 /* possible values for mo_dom_lock */
197 NO_DOM_LOCK_ON_OPEN = 0,
198 TRYLOCK_DOM_ON_OPEN = 1,
199 ALWAYS_DOM_LOCK_ON_OPEN = 2,
200 NUM_DOM_LOCK_ON_OPEN_MODES
203 struct mdt_statfs_cache {
204 struct obd_statfs msf_osfs;
210 struct lu_device mdt_lu_dev;
211 struct seq_server_site mdt_seq_site;
212 /* DLM name-space for meta-data locks maintained by this server */
213 struct ldlm_namespace *mdt_namespace;
214 /* ptlrpc handle for MDS->client connections (for lock ASTs). */
215 struct ptlrpc_client *mdt_ldlm_client;
216 /* underlying device */
217 struct obd_export *mdt_child_exp;
218 struct md_device *mdt_child;
219 struct dt_device *mdt_bottom;
220 struct obd_export *mdt_bottom_exp;
221 struct local_oid_storage *mdt_los;
223 struct lu_target mdt_lut;
225 * Options bit-fields.
228 unsigned int mo_user_xattr:1,
233 mo_migrate_hsm_allowed:1;
234 unsigned int mo_dom_lock;
236 /* mdt state flags */
237 unsigned long mdt_state;
239 /* transaction callbacks */
240 struct dt_txn_callback mdt_txn_cb;
242 /* these values should be updated from lov if necessary.
243 * or should be placed somewhere else. */
248 /* preferred BRW size, decided by storage type and capability */
251 struct upcall_cache *mdt_identity_cache;
253 unsigned int mdt_capa_conf:1,
254 /* Enable remote dir on non-MDT0 */
255 mdt_enable_remote_dir:1,
256 mdt_enable_striped_dir:1,
257 mdt_enable_dir_migration:1,
258 mdt_enable_dir_restripe:1,
259 mdt_enable_remote_rename:1,
263 /* user with gid can create remote/striped
264 * dir, and set default dir stripe */
265 gid_t mdt_enable_remote_dir_gid;
266 /* user with this gid can change projid */
267 gid_t mdt_enable_chprojid_gid;
269 /* lock for osfs and md_root */
272 /* statfs optimization: we cache a bit */
273 struct mdt_statfs_cache mdt_sum_osfs;
274 struct mdt_statfs_cache mdt_osfs;
277 struct root_squash_info mdt_squash;
279 struct rename_stats mdt_rename_stats;
280 struct lu_fid mdt_md_root_fid;
282 /* connection to quota master */
283 struct obd_export *mdt_qmt_exp;
284 /* quota master device associated with this MDT */
285 struct lu_device *mdt_qmt_dev;
287 struct coordinator mdt_coordinator;
289 /* inter-MDT connection count */
290 atomic_t mdt_mds_mds_conns;
292 /* MDT device async commit count, used for debug and sanity test */
293 atomic_t mdt_async_commit_count;
295 struct mdt_object *mdt_md_root;
298 #define MDT_SERVICE_WATCHDOG_FACTOR (2)
299 #define MDT_COS_DEFAULT (0)
301 #define ENOENT_VERSION 1 /** 'virtual' version of non-existent object */
304 struct lu_object_header mot_header;
305 struct lu_object mot_obj;
306 unsigned int mot_lov_created:1, /* lov object created */
307 mot_cache_attr:1; /* enable remote object
310 spinlock_t mot_write_lock;
311 /* Lock to protect object's SOM update. */
312 struct mutex mot_som_mutex;
313 /* Lock to protect create_data */
314 struct mutex mot_lov_mutex;
315 /* lock to protect read/write stages for Data-on-MDT files */
316 struct rw_semaphore mot_dom_sem;
317 /* Lock to protect lease open.
318 * Lease open acquires write lock; normal open acquires read lock */
319 struct rw_semaphore mot_open_sem;
320 atomic_t mot_lease_count;
321 atomic_t mot_open_count;
324 struct mdt_lock_handle {
325 /* Lock type, reg for cross-ref use or pdo lock. */
329 struct lustre_handle mlh_reg_lh;
330 enum ldlm_mode mlh_reg_mode;
333 struct lustre_handle mlh_pdo_lh;
334 enum ldlm_mode mlh_pdo_mode;
335 unsigned int mlh_pdo_hash;
337 /* Remote regular lock */
338 struct lustre_handle mlh_rreg_lh;
339 enum ldlm_mode mlh_rreg_mode;
343 MDT_LH_PARENT, /* parent lockh */
344 MDT_LH_CHILD, /* child lockh */
345 MDT_LH_OLD, /* old lockh for rename */
346 MDT_LH_LAYOUT = MDT_LH_OLD, /* layout lock */
347 MDT_LH_NEW, /* new lockh for rename */
348 MDT_LH_RMT, /* used for return lh to caller */
349 MDT_LH_LOCAL, /* local lock never return to client */
358 /* Special magical errno for communicaiton between mdt_reint_open()
359 * and mdt_intent_reint() which means return the lock to the client
360 * for subsequent cross ref open. Previously we used plain -EREMOTE
361 * but other functions called in that path might return it too and
362 * confuse us. This is not returned to the client. See LU-5370. */
363 #define MDT_EREMOTE_OPEN (EREMOTE + 1024)
365 struct mdt_reint_record {
366 enum mds_reint_op rr_opcode;
367 const struct lustre_handle *rr_open_handle;
368 const struct lustre_handle *rr_lease_handle;
369 const struct lu_fid *rr_fid1;
370 const struct lu_fid *rr_fid2;
371 struct lu_name rr_name;
372 struct lu_name rr_tgt_name;
379 enum mdt_reint_flag {
380 MRF_OPEN_TRUNC = 1 << 0,
384 * Common data shared by mdt-level handlers. This is allocated per-thread to
385 * reduce stack consumption.
387 struct mdt_thread_info {
390 * The following members will be filled explicitly
391 * with specific data in mdt_thread_info_init().
393 /* TODO: move this into mdt_session_key(with LCT_SESSION), because
394 * request handling may migrate from one server thread to another.
396 struct req_capsule *mti_pill;
398 /* although we have export in req, there are cases when it is not
399 * available, e.g. closing files upon export destroy */
400 struct obd_export *mti_exp;
402 * A couple of lock handles.
404 struct mdt_lock_handle mti_lh[MDT_LH_NR];
406 struct mdt_device *mti_mdt;
407 const struct lu_env *mti_env;
409 /* transaction number of current request */
414 * The following members will be filled expilictly
415 * with zero in mdt_thread_info_init(). These members may be used
422 struct md_attr mti_attr;
423 struct md_attr mti_attr2; /* mdt_lvb.c */
425 * Body for "habeo corpus" operations.
427 const struct mdt_body *mti_body;
429 * Host object. This is released at the end of mdt_handler().
431 struct mdt_object *mti_object;
433 * Lock request for "habeo clavis" operations.
435 const struct ldlm_request *mti_dlm_req;
437 __u32 mti_has_trans:1, /* has txn already? */
439 /* big_lmm buffer was used and must be used in reply */
444 /* opdata for mdt_reint_open(), has the same as
445 * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this
446 * value onto disk for recovery when mdt_trans_stop_cb() is called.
452 * The following members will be filled explicitly
453 * with zero in mdt_reint_unpack(), because they are only used
454 * by reint requests (including mdt_reint_open()).
458 * reint record. contains information for reint operations.
460 struct mdt_reint_record mti_rr;
462 __u64 mti_ver[PTLRPC_NUM_VERSIONS];
464 * Operation specification (currently create and lookup)
466 struct md_op_spec mti_spec;
470 * The following members will _NOT_ be initialized at all.
471 * DO NOT expect them to contain any valid value.
472 * They should be initialized explicitly by the user themselves.
475 /* XXX: If something is in a union, make sure they do not conflict */
476 struct lu_fid mti_tmp_fid1;
477 struct lu_fid mti_tmp_fid2;
478 union ldlm_policy_data mti_policy; /* for mdt_object_lock() */
479 struct ldlm_res_id mti_res_id; /* and mdt_rename_lock() */
481 struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */
482 char ns_name[48];/* for mdt_init0() */
483 struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */
484 struct obd_statfs osfs; /* for mdt_statfs() */
486 /* for mdt_readpage() */
487 struct lu_rdpg mti_rdpg;
497 struct lustre_handle mti_open_handle;
499 struct lu_buf mti_buf;
500 struct lu_buf mti_big_buf;
502 /* Ops object filename */
503 struct lu_name mti_name;
504 char mti_filename[NAME_MAX + 1];
505 /* per-thread values, can be re-used, may be vmalloc'd */
510 /* should be enough to fit lustre_mdt_attrs */
511 char mti_xattr_buf[128];
512 struct ldlm_enqueue_info mti_einfo[2];
513 /* einfo used by mdt_remote_object_lock_try() */
514 struct ldlm_enqueue_info mti_remote_einfo;
515 struct tg_reply_data *mti_reply_data;
517 /* FLR: layout change API */
518 struct md_layout_change mti_mlc;
521 extern struct lu_context_key mdt_thread_key;
523 static inline struct mdt_thread_info *mdt_th_info(const struct lu_env *env)
525 return lu_env_info(env, &mdt_thread_key);
528 struct cdt_req_progress {
529 struct mutex crp_lock; /**< protect tree */
530 struct interval_node *crp_root; /**< tree to track extent
532 struct interval_node **crp_node; /**< buffer for tree nodes
533 * vector of fixed size
535 int crp_cnt; /**< # of used nodes */
536 int crp_max; /**< # of allocated nodes */
539 struct cdt_agent_req {
540 struct hlist_node car_cookie_hash; /**< find req by cookie */
541 struct list_head car_request_list; /**< to chain all the req. */
542 atomic_t car_refcount; /**< reference counter */
543 __u64 car_flags; /**< request original flags */
544 struct obd_uuid car_uuid; /**< agent doing the req. */
545 __u32 car_archive_id; /**< archive id */
546 int car_canceled; /**< request was canceled */
547 time64_t car_req_start; /**< start time */
548 time64_t car_req_update; /**< last update time */
549 struct hsm_action_item *car_hai; /**< req. to the agent */
550 struct cdt_req_progress car_progress; /**< track data mvt
553 extern struct kmem_cache *mdt_hsm_car_kmem;
556 struct list_head ha_list; /**< to chain the agents */
557 struct obd_uuid ha_uuid; /**< agent uuid */
558 __u32 *ha_archive_id; /**< archive id */
559 int ha_archive_cnt; /**< number of archive entries
560 * 0 means any archive */
561 atomic_t ha_requests; /**< current request count */
562 atomic_t ha_success; /**< number of successful
564 atomic_t ha_failure; /**< number of failed actions */
567 struct cdt_restore_handle {
568 struct list_head crh_list; /**< to chain the handle */
569 struct lu_fid crh_fid; /**< fid of the object */
570 struct ldlm_extent crh_extent; /**< extent of the restore */
571 struct mdt_lock_handle crh_lh; /**< lock handle */
573 extern struct kmem_cache *mdt_hsm_cdt_kmem; /** restore handle slab cache */
575 struct hsm_record_update {
577 enum agent_req_status status;
580 static inline const struct md_device_operations *
581 mdt_child_ops(struct mdt_device * m)
583 LASSERT(m->mdt_child);
584 return m->mdt_child->md_ops;
587 static inline struct md_object *mdt_object_child(struct mdt_object *o)
590 return lu2md(lu_object_next(&o->mot_obj));
593 static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info)
595 return info->mti_pill ? info->mti_pill->rc_req : NULL;
598 static inline __u64 mdt_conn_flags(struct mdt_thread_info *info)
600 LASSERT(info->mti_exp);
601 return exp_connect_flags(info->mti_exp);
604 static inline void mdt_object_get(const struct lu_env *env,
605 struct mdt_object *o)
608 lu_object_get(&o->mot_obj);
612 static inline void mdt_object_put(const struct lu_env *env,
613 struct mdt_object *o)
616 lu_object_put(env, &o->mot_obj);
620 static inline int mdt_object_exists(const struct mdt_object *o)
622 return lu_object_exists(&o->mot_obj);
625 static inline int mdt_object_remote(const struct mdt_object *o)
627 return lu_object_remote(&o->mot_obj);
630 static inline const struct lu_fid *mdt_object_fid(const struct mdt_object *o)
632 return lu_object_fid(&o->mot_obj);
635 static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt)
637 return mdt->mdt_lu_dev.ld_site;
640 static inline struct seq_server_site *mdt_seq_site(struct mdt_device *mdt)
642 return &mdt->mdt_seq_site;
645 static inline void mdt_export_evict(struct obd_export *exp)
647 class_fail_export(exp);
650 /* Here we use LVB_TYPE to check dne client, because it is
651 * also landed on 2.4. */
652 static inline bool mdt_is_dne_client(struct obd_export *exp)
654 return !!(exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE);
657 static inline bool mdt_is_striped_client(struct obd_export *exp)
659 return exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE;
662 __u32 mdt_lmm_dom_entry_check(struct lov_mds_md *lmm, int *dom_only);
664 static inline bool mdt_lmm_dom_only(struct lov_mds_md *lmm)
668 mdt_lmm_dom_entry_check(lmm, &dom_only);
672 static inline __u32 mdt_lmm_dom_stripesize(struct lov_mds_md *lmm)
674 return mdt_lmm_dom_entry_check(lmm, NULL);
677 static inline bool mdt_lmm_is_flr(struct lov_mds_md *lmm)
679 struct lov_comp_md_v1 *lcm = (typeof(lcm))lmm;
681 return le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1 &&
682 le16_to_cpu(lcm->lcm_mirror_count) > 0;
685 static inline bool lmm_is_overstriping(struct lov_mds_md *lmm)
687 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V1 ||
688 le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_V3)
689 return le16_to_cpu(lmm->lmm_pattern) & LOV_PATTERN_OVERSTRIPING;
694 static inline bool mdt_lmm_comp_overstriping(struct lov_mds_md *lmm)
696 struct lov_comp_md_v1 *comp_v1;
697 struct lov_mds_md *v1;
701 comp_v1 = (struct lov_comp_md_v1 *)lmm;
703 for (i = 1; i < le16_to_cpu(comp_v1->lcm_entry_count); i++) {
704 off = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
705 v1 = (struct lov_mds_md *)((char *)comp_v1 + off);
707 if (lmm_is_overstriping(v1))
714 static inline bool mdt_lmm_is_overstriping(struct lov_mds_md *lmm)
716 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC_COMP_V1)
717 return mdt_lmm_comp_overstriping(lmm);
719 return lmm_is_overstriping(lmm);
722 static inline bool mdt_is_sum_statfs_client(struct obd_export *exp)
724 return exp_connect_flags(exp) & OBD_CONNECT_FLAGS2 &&
725 exp_connect_flags2(exp) & OBD_CONNECT2_SUM_STATFS;
728 __u64 mdt_get_disposition(struct ldlm_reply *rep, __u64 op_flag);
729 void mdt_set_disposition(struct mdt_thread_info *info,
730 struct ldlm_reply *rep, __u64 op_flag);
731 void mdt_clear_disposition(struct mdt_thread_info *info,
732 struct ldlm_reply *rep, __u64 op_flag);
734 void mdt_lock_pdo_init(struct mdt_lock_handle *lh, enum ldlm_mode lock_mode,
735 const struct lu_name *lname);
737 void mdt_lock_reg_init(struct mdt_lock_handle *lh, enum ldlm_mode lm);
739 int mdt_lock_setup(struct mdt_thread_info *info, struct mdt_object *mo,
740 struct mdt_lock_handle *lh);
742 int mdt_check_resent_lock(struct mdt_thread_info *info, struct mdt_object *mo,
743 struct mdt_lock_handle *lhc);
745 int mdt_object_lock(struct mdt_thread_info *info, struct mdt_object *mo,
746 struct mdt_lock_handle *lh, __u64 ibits);
748 int mdt_reint_object_lock(struct mdt_thread_info *info, struct mdt_object *o,
749 struct mdt_lock_handle *lh, __u64 ibits,
752 int mdt_object_lock_try(struct mdt_thread_info *info, struct mdt_object *mo,
753 struct mdt_lock_handle *lh, __u64 *ibits,
754 __u64 trybits, bool cos_incompat);
756 void mdt_object_unlock(struct mdt_thread_info *info, struct mdt_object *mo,
757 struct mdt_lock_handle *lh, int decref);
758 void mdt_save_lock(struct mdt_thread_info *info, struct lustre_handle *h,
759 enum ldlm_mode mode, int decref);
761 struct mdt_object *mdt_object_new(const struct lu_env *env,
763 const struct lu_fid *);
764 struct mdt_object *mdt_object_find(const struct lu_env *,
766 const struct lu_fid *);
767 struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *,
768 const struct lu_fid *,
769 struct mdt_lock_handle *,
771 void mdt_object_unlock_put(struct mdt_thread_info *,
773 struct mdt_lock_handle *,
776 void mdt_client_compatibility(struct mdt_thread_info *info);
778 int mdt_remote_object_lock(struct mdt_thread_info *mti,
779 struct mdt_object *o, const struct lu_fid *fid,
780 struct lustre_handle *lh,
781 enum ldlm_mode mode, __u64 ibits, bool cache);
782 int mdt_reint_striped_lock(struct mdt_thread_info *info,
783 struct mdt_object *o,
784 struct mdt_lock_handle *lh,
786 struct ldlm_enqueue_info *einfo,
788 void mdt_reint_striped_unlock(struct mdt_thread_info *info,
789 struct mdt_object *o,
790 struct mdt_lock_handle *lh,
791 struct ldlm_enqueue_info *einfo, int decref);
793 enum mdt_name_flags {
797 int mdt_name_unpack(struct req_capsule *pill,
798 const struct req_msg_field *field,
800 enum mdt_name_flags flags);
801 int mdt_close_unpack(struct mdt_thread_info *info);
802 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op);
803 void mdt_fix_lov_magic(struct mdt_thread_info *info, void *eadata);
804 int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *);
805 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
806 int mdt_pack_acl2body(struct mdt_thread_info *info, struct mdt_body *repbody,
807 struct mdt_object *o, struct lu_nodemap *nodemap);
809 void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b,
810 const struct lu_attr *attr, const struct lu_fid *fid);
811 int mdt_pack_size2body(struct mdt_thread_info *info,
812 const struct lu_fid *fid, struct lustre_handle *lh);
813 int mdt_getxattr(struct mdt_thread_info *info);
814 int mdt_reint_setxattr(struct mdt_thread_info *info,
815 struct mdt_lock_handle *lh);
817 void mdt_lock_handle_init(struct mdt_lock_handle *lh);
818 void mdt_lock_handle_fini(struct mdt_lock_handle *lh);
820 void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *);
821 void mdt_reconstruct_generic(struct mdt_thread_info *mti,
822 struct mdt_lock_handle *lhc);
824 extern void target_recovery_fini(struct obd_device *obd);
825 extern void target_recovery_init(struct lu_target *lut,
826 svc_handler_t handler);
827 int mdt_fs_setup(const struct lu_env *, struct mdt_device *,
828 struct obd_device *, struct lustre_sb_info *lsi);
829 void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *);
831 int mdt_export_stats_init(struct obd_device *obd,
832 struct obd_export *exp,
835 int mdt_lock_new_child(struct mdt_thread_info *info,
836 struct mdt_object *o,
837 struct mdt_lock_handle *child_lockh);
838 void mdt_mfd_set_mode(struct mdt_file_data *mfd, u64 open_flags);
839 int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc);
840 struct mdt_file_data *mdt_open_handle2mfd(struct mdt_export_data *med,
841 const struct lustre_handle *open_handle,
843 int mdt_revoke_remote_lookup_lock(struct mdt_thread_info *info,
844 struct mdt_object *pobj,
845 struct mdt_object *obj);
847 int mdt_get_info(struct tgt_session_info *tsi);
848 int mdt_attr_get_complex(struct mdt_thread_info *info,
849 struct mdt_object *o, struct md_attr *ma);
850 int mdt_big_xattr_get(struct mdt_thread_info *info, struct mdt_object *o,
852 int mdt_stripe_get(struct mdt_thread_info *info, struct mdt_object *o,
853 struct md_attr *ma, const char *name);
854 int mdt_attr_get_pfid(struct mdt_thread_info *info, struct mdt_object *o,
855 struct lu_fid *pfid);
856 int mdt_write_get(struct mdt_object *o);
857 void mdt_write_put(struct mdt_object *o);
858 int mdt_write_read(struct mdt_object *o);
859 struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med);
860 int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd);
861 void mdt_mfd_free(struct mdt_file_data *mfd);
862 int mdt_close(struct tgt_session_info *tsi);
863 int mdt_add_dirty_flag(struct mdt_thread_info *info, struct mdt_object *mo,
865 int mdt_fix_reply(struct mdt_thread_info *info);
866 int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *,
868 void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *);
869 int mdt_layout_change(struct mdt_thread_info *info, struct mdt_object *obj,
870 struct mdt_lock_handle *lhc,
871 struct md_layout_change *spec);
872 int mdt_device_sync(const struct lu_env *env, struct mdt_device *mdt);
874 struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len);
875 const struct lu_buf *mdt_buf_const(const struct lu_env *env,
876 const void *area, ssize_t len);
878 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid);
879 void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv);
881 bool allow_client_chgrp(struct mdt_thread_info *info, struct lu_ucred *uc);
882 int mdt_check_ucred(struct mdt_thread_info *);
883 int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *);
884 int mdt_init_ucred_intent_getattr(struct mdt_thread_info *, struct mdt_body *);
885 int mdt_init_ucred_reint(struct mdt_thread_info *);
886 void mdt_exit_ucred(struct mdt_thread_info *);
887 int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int);
888 void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int);
889 int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *,
891 void mdt_thread_info_init(struct ptlrpc_request *req,
892 struct mdt_thread_info *mti);
893 void mdt_thread_info_fini(struct mdt_thread_info *mti);
894 struct mdt_thread_info *tsi2mdt_info(struct tgt_session_info *tsi);
895 void mdt_intent_fixup_resent(struct mdt_thread_info *info,
896 struct ldlm_lock *new_lock,
897 struct mdt_lock_handle *lh, __u64 flags);
898 int mdt_intent_lock_replace(struct mdt_thread_info *info,
899 struct ldlm_lock **lockp,
900 struct mdt_lock_handle *lh,
901 __u64 flags, int result);
903 int hsm_init_ucred(struct lu_ucred *uc);
904 int mdt_hsm_attr_set(struct mdt_thread_info *info, struct mdt_object *obj,
905 const struct md_hsm *mh);
907 int mdt_remote_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
908 void *data, int flag);
909 int mdt_links_read(struct mdt_thread_info *info,
910 struct mdt_object *mdt_obj,
911 struct linkea_data *ldata);
912 int mdt_close_internal(struct mdt_thread_info *info, struct ptlrpc_request *req,
913 struct mdt_body *repbody);
914 int mdt_pack_secctx_in_reply(struct mdt_thread_info *info,
915 struct mdt_object *child);
917 static inline struct mdt_device *mdt_dev(struct lu_device *d)
919 return container_of0(d, struct mdt_device, mdt_lu_dev);
922 static inline struct mdt_object *mdt_obj(struct lu_object *o)
924 return container_of0(o, struct mdt_object, mot_obj);
927 static inline struct dt_object *mdt_obj2dt(struct mdt_object *mo)
929 struct lu_object *lo;
930 struct mdt_device *mdt = mdt_dev(mo->mot_obj.lo_dev);
932 lo = lu_object_locate(mo->mot_obj.lo_header,
933 mdt->mdt_bottom->dd_lu_dev.ld_type);
938 static inline bool agent_req_in_final_state(enum agent_req_status ars)
940 return ((ars == ARS_SUCCEED) || (ars == ARS_FAILED) ||
941 (ars == ARS_CANCELED));
944 /* mdt/mdt_identity.c */
945 #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity"
947 extern struct upcall_cache_ops mdt_identity_upcall_cache_ops;
949 struct md_identity *mdt_identity_get(struct upcall_cache *, __u32);
951 void mdt_identity_put(struct upcall_cache *, struct md_identity *);
953 void mdt_flush_identity(struct upcall_cache *, int);
955 __u32 mdt_identity_get_perm(struct md_identity *, lnet_nid_t);
957 /* mdt/mdt_recovery.c */
958 __u64 mdt_req_from_lrd(struct ptlrpc_request *req, struct tg_reply_data *trd);
961 int mdt_hsm_state_get(struct tgt_session_info *tsi);
962 int mdt_hsm_state_set(struct tgt_session_info *tsi);
963 int mdt_hsm_action(struct tgt_session_info *tsi);
964 int mdt_hsm_progress(struct tgt_session_info *tsi);
965 int mdt_hsm_ct_register(struct tgt_session_info *tsi);
966 int mdt_hsm_ct_unregister(struct tgt_session_info *tsi);
967 int mdt_hsm_request(struct tgt_session_info *tsi);
969 /* mdt/mdt_hsm_cdt_actions.c */
970 extern const struct file_operations mdt_hsm_actions_fops;
971 void dump_llog_agent_req_rec(const char *prefix,
972 const struct llog_agent_req_rec *larr);
973 int cdt_llog_process(const struct lu_env *env, struct mdt_device *mdt,
974 llog_cb_t cb, void *data, u32 start_cat_idx,
975 u32 start_rec_idx, int rw);
976 int mdt_agent_record_add(const struct lu_env *env, struct mdt_device *mdt,
977 __u32 archive_id, __u64 flags,
978 struct hsm_action_item *hai);
979 int mdt_agent_record_update(const struct lu_env *env, struct mdt_device *mdt,
980 struct hsm_record_update *updates,
981 unsigned int updates_count);
982 void cdt_agent_record_hash_add(struct coordinator *cdt, u64 cookie, u32 cat_idt,
984 void cdt_agent_record_hash_lookup(struct coordinator *cdt, u64 cookie,
985 u32 *cat_idt, u32 *rec_idx);
986 void cdt_agent_record_hash_del(struct coordinator *cdt, u64 cookie);
988 /* mdt/mdt_hsm_cdt_agent.c */
989 extern const struct file_operations mdt_hsm_agent_fops;
990 int mdt_hsm_agent_register(struct mdt_thread_info *info,
991 const struct obd_uuid *uuid,
992 int nr_archives, __u32 *archive_num);
993 int mdt_hsm_agent_register_mask(struct mdt_thread_info *info,
994 const struct obd_uuid *uuid,
996 int mdt_hsm_agent_unregister(struct mdt_thread_info *info,
997 const struct obd_uuid *uuid);
998 int mdt_hsm_agent_update_statistics(struct coordinator *cdt,
999 int succ_rq, int fail_rq, int new_rq,
1000 const struct obd_uuid *uuid);
1001 int mdt_hsm_find_best_agent(struct coordinator *cdt, __u32 archive,
1002 struct obd_uuid *uuid);
1003 int mdt_hsm_agent_send(struct mdt_thread_info *mti, struct hsm_action_list *hal,
1005 /* mdt/mdt_hsm_cdt_client.c */
1006 int mdt_hsm_add_actions(struct mdt_thread_info *info,
1007 struct hsm_action_list *hal);
1008 int mdt_hsm_get_action(struct mdt_thread_info *mti,
1009 const struct lu_fid *fid,
1010 enum hsm_copytool_action *action,
1011 enum agent_req_status *status,
1012 struct hsm_extent *extent);
1013 bool mdt_hsm_restore_is_running(struct mdt_thread_info *mti,
1014 const struct lu_fid *fid);
1015 /* mdt/mdt_hsm_cdt_requests.c */
1016 extern struct cfs_hash_ops cdt_request_cookie_hash_ops;
1017 extern struct cfs_hash_ops cdt_agent_record_hash_ops;
1018 extern const struct file_operations mdt_hsm_active_requests_fops;
1019 void dump_requests(char *prefix, struct coordinator *cdt);
1020 struct cdt_agent_req *mdt_cdt_alloc_request(__u32 archive_id, __u64 flags,
1021 struct obd_uuid *uuid,
1022 struct hsm_action_item *hai);
1023 void mdt_cdt_free_request(struct cdt_agent_req *car);
1024 int mdt_cdt_add_request(struct coordinator *cdt, struct cdt_agent_req *new_car);
1025 struct cdt_agent_req *mdt_cdt_find_request(struct coordinator *cdt, u64 cookie);
1026 void mdt_cdt_get_work_done(struct cdt_agent_req *car, __u64 *done_sz);
1027 void mdt_cdt_get_request(struct cdt_agent_req *car);
1028 void mdt_cdt_put_request(struct cdt_agent_req *car);
1029 struct cdt_agent_req *mdt_cdt_update_request(struct coordinator *cdt,
1030 const struct hsm_progress_kernel *pgs);
1031 int mdt_cdt_remove_request(struct coordinator *cdt, __u64 cookie);
1032 /* mdt/mdt_coordinator.c */
1033 void mdt_hsm_dump_hal(int level, const char *prefix,
1034 struct hsm_action_list *hal);
1035 int cdt_restore_handle_add(struct mdt_thread_info *mti, struct coordinator *cdt,
1036 const struct lu_fid *fid,
1037 const struct hsm_extent *he);
1038 struct cdt_restore_handle *cdt_restore_handle_find(struct coordinator *cdt,
1039 const struct lu_fid *fid);
1040 void cdt_restore_handle_del(struct mdt_thread_info *mti,
1041 struct coordinator *cdt, const struct lu_fid *fid);
1042 /* coordinator management */
1043 int mdt_hsm_cdt_init(struct mdt_device *mdt);
1044 int mdt_hsm_cdt_stop(struct mdt_device *mdt);
1045 int mdt_hsm_cdt_fini(struct mdt_device *mdt);
1048 * Signal the coordinator has work to do
1049 * \param cdt [IN] coordinator
1051 static inline void mdt_hsm_cdt_event(struct coordinator *cdt)
1053 cdt->cdt_event = true;
1056 /* coordinator control sysfs interface */
1057 ssize_t hsm_control_show(struct kobject *kobj, struct attribute *attr,
1059 ssize_t hsm_control_store(struct kobject *kobj, struct attribute *attr,
1060 const char *buffer, size_t count);
1061 int hsm_cdt_tunables_init(struct mdt_device *mdt);
1062 void hsm_cdt_tunables_fini(struct mdt_device *mdt);
1063 /* md_hsm helpers */
1064 struct mdt_object *mdt_hsm_get_md_hsm(struct mdt_thread_info *mti,
1065 const struct lu_fid *fid,
1066 struct md_hsm *hsm);
1067 /* actions/request helpers */
1068 int mdt_hsm_add_hal(struct mdt_thread_info *mti,
1069 struct hsm_action_list *hal, struct obd_uuid *uuid);
1070 bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
1071 u32 archive_id, u64 rq_flags,
1072 const struct md_hsm *hsm);
1073 int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
1074 struct hsm_progress_kernel *pgs);
1076 int mdt_close_swap_layouts(struct mdt_thread_info *info,
1077 struct mdt_object *o, struct md_attr *ma);
1079 extern struct lu_context_key mdt_thread_key;
1081 /* debug issues helper starts here*/
1082 static inline int mdt_fail_write(const struct lu_env *env,
1083 struct dt_device *dd, int id)
1085 if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) {
1086 CERROR(LUSTRE_MDT_NAME": cfs_fail_loc=%x, fail write ops\n",
1088 return dt_ro(env, dd);
1089 /* We set FAIL_ONCE because we never "un-fail" a device */
1095 static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req)
1097 return &req->rq_export->exp_mdt_data;
1100 static inline struct mdt_device *mdt_exp2dev(struct obd_export *exp)
1102 return mdt_dev(exp->exp_obd->obd_lu_dev);
1105 static inline bool mdt_rdonly(struct obd_export *exp)
1107 return (exp_connect_flags(exp) & OBD_CONNECT_RDONLY ||
1108 mdt_exp2dev(exp)->mdt_bottom->dd_rdonly ||
1109 mdt_exp2dev(exp)->mdt_readonly);
1112 typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti,
1113 struct mdt_lock_handle *lhc);
1114 static inline int mdt_check_resent(struct mdt_thread_info *info,
1115 mdt_reconstruct_t reconstruct,
1116 struct mdt_lock_handle *lhc)
1118 struct ptlrpc_request *req = mdt_info_req(info);
1122 if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
1123 OBD_ALLOC_PTR(info->mti_reply_data);
1124 if (info->mti_reply_data == NULL)
1127 rc = req_can_reconstruct(req, info->mti_reply_data);
1129 reconstruct(info, lhc);
1131 DEBUG_REQ(D_HA, req,
1132 "no reply data found for RESENT req, rc = %d",
1135 OBD_FREE_PTR(info->mti_reply_data);
1136 info->mti_reply_data = NULL;
1141 struct lu_ucred *mdt_ucred(const struct mdt_thread_info *info);
1142 struct lu_ucred *mdt_ucred_check(const struct mdt_thread_info *info);
1144 static inline int is_identity_get_disabled(struct upcall_cache *cache)
1146 return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1;
1149 int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int);
1151 static int mdt_dom_glimpse_ast(struct ldlm_lock *lock, void *reqp)
1153 return -ELDLM_NO_LOCK_DATA;
1156 /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */
1157 static inline int mdt_fid_lock(const struct lu_env *env,
1158 struct ldlm_namespace *ns,
1159 struct lustre_handle *lh, enum ldlm_mode mode,
1160 union ldlm_policy_data *policy,
1161 const struct ldlm_res_id *res_id,
1162 __u64 flags, const __u64 *client_cookie)
1165 bool glimpse = policy->l_inodebits.bits & MDS_INODELOCK_DOM;
1167 LASSERT(ns != NULL);
1168 LASSERT(lh != NULL);
1170 rc = ldlm_cli_enqueue_local(env, ns, res_id, LDLM_IBITS, policy,
1171 mode, &flags, mdt_blocking_ast,
1172 ldlm_completion_ast,
1173 glimpse ? mdt_dom_glimpse_ast : NULL,
1174 NULL, 0, LVB_T_NONE, client_cookie, lh);
1175 return rc == ELDLM_OK ? 0 : -EIO;
1178 static inline void mdt_fid_unlock(struct lustre_handle *lh, enum ldlm_mode mode)
1180 ldlm_lock_decref(lh, mode);
1183 static inline bool mdt_slc_is_enabled(struct mdt_device *mdt)
1185 return mdt->mdt_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_BLOCKING;
1188 extern mdl_mode_t mdt_mdl_lock_modes[];
1189 extern enum ldlm_mode mdt_dlm_lock_modes[];
1191 /* LCK_MINMODE which is zero returns false for is_power_of_2 */
1193 static inline mdl_mode_t mdt_dlm_mode2mdl_mode(enum ldlm_mode mode)
1195 LASSERT(mode == LCK_MINMODE || is_power_of_2(mode));
1196 return mdt_mdl_lock_modes[mode];
1199 static inline enum ldlm_mode mdt_mdl_mode2dlm_mode(mdl_mode_t mode)
1201 LASSERT(mode == MDL_MINMODE || is_power_of_2(mode));
1202 return mdt_dlm_lock_modes[mode];
1206 int mdt_set_som(struct mdt_thread_info *info, struct mdt_object *obj,
1207 enum lustre_som_flags flag, __u64 size, __u64 blocks);
1208 int mdt_get_som(struct mdt_thread_info *info, struct mdt_object *obj,
1209 struct md_attr *ma);
1210 int mdt_lsom_downgrade(struct mdt_thread_info *info, struct mdt_object *obj);
1211 int mdt_lsom_update(struct mdt_thread_info *info, struct mdt_object *obj,
1215 extern struct ldlm_valblock_ops mdt_lvbo;
1216 int mdt_dom_lvb_is_valid(struct ldlm_resource *res);
1217 int mdt_dom_lvbo_update(struct ldlm_resource *res, struct ldlm_lock *lock,
1218 struct ptlrpc_request *req, bool increase_only);
1220 void mdt_enable_cos(struct mdt_device *dev, bool enable);
1221 int mdt_cos_is_enabled(struct mdt_device *);
1239 LPROC_MDT_SAMEDIR_RENAME,
1240 LPROC_MDT_CROSSDIR_RENAME,
1248 void mdt_counter_incr(struct ptlrpc_request *req, int opcode);
1249 void mdt_stats_counter_init(struct lprocfs_stats *stats);
1250 int mdt_tunables_init(struct mdt_device *mdt, const char *name);
1251 void mdt_tunables_fini(struct mdt_device *mdt);
1253 /* lustre/mdt_mdt_lproc.c */
1254 int lprocfs_mdt_open_files_seq_open(struct inode *inode,
1256 void mdt_rename_counter_tally(struct mdt_thread_info *info,
1257 struct mdt_device *mdt,
1258 struct ptlrpc_request *req,
1259 struct mdt_object *src, struct mdt_object *tgt);
1261 static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt)
1263 return mdt->mdt_lu_dev.ld_obd;
1266 extern const struct lu_device_operations mdt_lu_ops;
1268 static inline char *mdt_obd_name(struct mdt_device *mdt)
1270 return mdt->mdt_lu_dev.ld_obd->obd_name;
1273 int mds_mod_init(void);
1274 void mds_mod_exit(void);
1276 static inline char *mdt_req_get_jobid(struct ptlrpc_request *req)
1278 struct obd_export *exp = req->rq_export;
1281 if (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS)
1282 jobid = lustre_msg_get_jobid(req->rq_reqmsg);
1289 #define VALID_FLAGS (LA_TYPE | LA_MODE | LA_SIZE | LA_BLOCKS | \
1290 LA_BLKSIZE | LA_ATIME | LA_MTIME | LA_CTIME)
1292 int mdt_obd_preprw(const struct lu_env *env, int cmd, struct obd_export *exp,
1293 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1294 struct niobuf_remote *rnb, int *nr_local,
1295 struct niobuf_local *lnb);
1297 int mdt_obd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
1298 struct obdo *oa, int objcount, struct obd_ioobj *obj,
1299 struct niobuf_remote *rnb, int npages,
1300 struct niobuf_local *lnb, int old_rc);
1301 int mdt_punch_hdl(struct tgt_session_info *tsi);
1302 int mdt_glimpse_enqueue(struct mdt_thread_info *mti, struct ldlm_namespace *ns,
1303 struct ldlm_lock **lockp, __u64 flags);
1304 int mdt_brw_enqueue(struct mdt_thread_info *info, struct ldlm_namespace *ns,
1305 struct ldlm_lock **lockp, __u64 flags);
1306 int mdt_dom_read_on_open(struct mdt_thread_info *mti, struct mdt_device *mdt,
1307 struct lustre_handle *lh);
1308 void mdt_dom_discard_data(struct mdt_thread_info *info, struct mdt_object *mo);
1309 int mdt_dom_disk_lvbo_update(const struct lu_env *env, struct mdt_object *mo,
1310 struct ldlm_resource *res, bool increase_only);
1311 void mdt_dom_obj_lvb_update(const struct lu_env *env, struct mdt_object *mo,
1312 bool increase_only);
1313 int mdt_dom_lvb_alloc(struct ldlm_resource *res);
1315 static inline bool mdt_dom_check_for_discard(struct mdt_thread_info *mti,
1316 struct mdt_object *mo)
1318 return lu_object_is_dying(&mo->mot_header) &&
1319 S_ISREG(lu_object_attr(&mo->mot_obj));
1322 int mdt_dom_object_size(const struct lu_env *env, struct mdt_device *mdt,
1323 const struct lu_fid *fid, struct mdt_body *mb,
1325 bool mdt_dom_client_has_lock(struct mdt_thread_info *info,
1326 const struct lu_fid *fid);
1327 void mdt_hp_brw(struct tgt_session_info *tsi);
1328 void mdt_hp_punch(struct tgt_session_info *tsi);
1329 int mdt_data_version_get(struct tgt_session_info *tsi);
1332 long mdt_grant_connect(const struct lu_env *env, struct obd_export *exp,
1333 u64 want, bool conservative);
1334 extern struct kmem_cache *ldlm_glimpse_work_kmem;
1336 static inline bool mdt_is_rootadmin(struct mdt_thread_info *info)
1338 struct lu_ucred *uc = NULL;
1342 if (info == NULL || info->mti_body == NULL)
1343 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 17, 3, 0)
1344 /* return true in case old client did not send mdt body */
1350 rc = mdt_init_ucred(info, (struct mdt_body *)info->mti_body);
1354 uc = mdt_ucred(info);
1355 is_admin = (uc->uc_uid == 0 && uc->uc_gid == 0 &&
1356 md_capable(uc, CFS_CAP_SYS_ADMIN));
1358 mdt_exit_ucred(info);
1364 #endif /* _MDT_INTERNAL_H */