1 /****************************************************************************** 2 ******************************************************************************* 3 ** 4 ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 5 ** Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved. 6 ** 7 ** This copyrighted material is made available to anyone wishing to use, 8 ** modify, copy, or redistribute it subject to the terms and conditions 9 ** of the GNU General Public License v.2. 10 ** 11 ******************************************************************************* 12 ******************************************************************************/ 13 14 #ifndef __DLM_INTERNAL_DOT_H__ 15 #define __DLM_INTERNAL_DOT_H__ 16 17 /* 18 * This is the main header file to be included in each DLM source file. 19 */ 20 21 #include <linux/module.h> 22 #include <linux/slab.h> 23 #include <linux/sched.h> 24 #include <linux/types.h> 25 #include <linux/ctype.h> 26 #include <linux/spinlock.h> 27 #include <linux/vmalloc.h> 28 #include <linux/list.h> 29 #include <linux/errno.h> 30 #include <linux/random.h> 31 #include <linux/delay.h> 32 #include <linux/socket.h> 33 #include <linux/kthread.h> 34 #include <linux/kobject.h> 35 #include <linux/kref.h> 36 #include <linux/kernel.h> 37 #include <linux/jhash.h> 38 #include <linux/miscdevice.h> 39 #include <linux/mutex.h> 40 #include <linux/idr.h> 41 #include <asm/uaccess.h> 42 43 #include <linux/dlm.h> 44 #include "config.h" 45 46 /* Size of the temp buffer midcomms allocates on the stack. 47 We try to make this large enough so most messages fit. 48 FIXME: should sctp make this unnecessary? */ 49 50 #define DLM_INBUF_LEN 148 51 52 struct dlm_ls; 53 struct dlm_lkb; 54 struct dlm_rsb; 55 struct dlm_member; 56 struct dlm_rsbtable; 57 struct dlm_dirtable; 58 struct dlm_direntry; 59 struct dlm_recover; 60 struct dlm_header; 61 struct dlm_message; 62 struct dlm_rcom; 63 struct dlm_mhandle; 64 65 #define log_print(fmt, args...) \ 66 printk(KERN_ERR "dlm: "fmt"\n" , ##args) 67 #define log_error(ls, fmt, args...) \ 68 printk(KERN_ERR "dlm: %s: " fmt "\n", (ls)->ls_name , ##args) 69 70 #define log_debug(ls, fmt, args...) \ 71 do { \ 72 if (dlm_config.ci_log_debug) \ 73 printk(KERN_DEBUG "dlm: %s: " fmt "\n", \ 74 (ls)->ls_name , ##args); \ 75 } while (0) 76 77 #define DLM_ASSERT(x, do) \ 78 { \ 79 if (!(x)) \ 80 { \ 81 printk(KERN_ERR "\nDLM: Assertion failed on line %d of file %s\n" \ 82 "DLM: assertion: \"%s\"\n" \ 83 "DLM: time = %lu\n", \ 84 __LINE__, __FILE__, #x, jiffies); \ 85 {do} \ 86 printk("\n"); \ 87 BUG(); \ 88 panic("DLM: Record message above and reboot.\n"); \ 89 } \ 90 } 91 92 93 struct dlm_direntry { 94 struct list_head list; 95 uint32_t master_nodeid; 96 uint16_t length; 97 char name[1]; 98 }; 99 100 struct dlm_dirtable { 101 struct list_head list; 102 spinlock_t lock; 103 }; 104 105 struct dlm_rsbtable { 106 struct rb_root keep; 107 struct rb_root toss; 108 spinlock_t lock; 109 }; 110 111 112 /* 113 * Lockspace member (per node in a ls) 114 */ 115 116 struct dlm_member { 117 struct list_head list; 118 int nodeid; 119 int weight; 120 int slot; 121 int slot_prev; 122 int comm_seq; 123 uint32_t generation; 124 }; 125 126 /* 127 * Save and manage recovery state for a lockspace. 128 */ 129 130 struct dlm_recover { 131 struct list_head list; 132 struct dlm_config_node *nodes; 133 int nodes_count; 134 uint64_t seq; 135 }; 136 137 /* 138 * Pass input args to second stage locking function. 139 */ 140 141 struct dlm_args { 142 uint32_t flags; 143 void (*astfn) (void *astparam); 144 void *astparam; 145 void (*bastfn) (void *astparam, int mode); 146 int mode; 147 struct dlm_lksb *lksb; 148 unsigned long timeout; 149 }; 150 151 152 /* 153 * Lock block 154 * 155 * A lock can be one of three types: 156 * 157 * local copy lock is mastered locally 158 * (lkb_nodeid is zero and DLM_LKF_MSTCPY is not set) 159 * process copy lock is mastered on a remote node 160 * (lkb_nodeid is non-zero and DLM_LKF_MSTCPY is not set) 161 * master copy master node's copy of a lock owned by remote node 162 * (lkb_nodeid is non-zero and DLM_LKF_MSTCPY is set) 163 * 164 * lkb_exflags: a copy of the most recent flags arg provided to dlm_lock or 165 * dlm_unlock. The dlm does not modify these or use any private flags in 166 * this field; it only contains DLM_LKF_ flags from dlm.h. These flags 167 * are sent as-is to the remote master when the lock is remote. 168 * 169 * lkb_flags: internal dlm flags (DLM_IFL_ prefix) from dlm_internal.h. 170 * Some internal flags are shared between the master and process nodes; 171 * these shared flags are kept in the lower two bytes. One of these 172 * flags set on the master copy will be propagated to the process copy 173 * and v.v. Other internal flags are private to the master or process 174 * node (e.g. DLM_IFL_MSTCPY). These are kept in the high two bytes. 175 * 176 * lkb_sbflags: status block flags. These flags are copied directly into 177 * the caller's lksb.sb_flags prior to the dlm_lock/dlm_unlock completion 178 * ast. All defined in dlm.h with DLM_SBF_ prefix. 179 * 180 * lkb_status: the lock status indicates which rsb queue the lock is 181 * on, grant, convert, or wait. DLM_LKSTS_ WAITING/GRANTED/CONVERT 182 * 183 * lkb_wait_type: the dlm message type (DLM_MSG_ prefix) for which a 184 * reply is needed. Only set when the lkb is on the lockspace waiters 185 * list awaiting a reply from a remote node. 186 * 187 * lkb_nodeid: when the lkb is a local copy, nodeid is 0; when the lkb 188 * is a master copy, nodeid specifies the remote lock holder, when the 189 * lkb is a process copy, the nodeid specifies the lock master. 190 */ 191 192 /* lkb_status */ 193 194 #define DLM_LKSTS_WAITING 1 195 #define DLM_LKSTS_GRANTED 2 196 #define DLM_LKSTS_CONVERT 3 197 198 /* lkb_flags */ 199 200 #define DLM_IFL_MSTCPY 0x00010000 201 #define DLM_IFL_RESEND 0x00020000 202 #define DLM_IFL_DEAD 0x00040000 203 #define DLM_IFL_OVERLAP_UNLOCK 0x00080000 204 #define DLM_IFL_OVERLAP_CANCEL 0x00100000 205 #define DLM_IFL_ENDOFLIFE 0x00200000 206 #define DLM_IFL_WATCH_TIMEWARN 0x00400000 207 #define DLM_IFL_TIMEOUT_CANCEL 0x00800000 208 #define DLM_IFL_DEADLOCK_CANCEL 0x01000000 209 #define DLM_IFL_STUB_MS 0x02000000 /* magic number for m_flags */ 210 #define DLM_IFL_USER 0x00000001 211 #define DLM_IFL_ORPHAN 0x00000002 212 213 #define DLM_CALLBACKS_SIZE 6 214 215 #define DLM_CB_CAST 0x00000001 216 #define DLM_CB_BAST 0x00000002 217 #define DLM_CB_SKIP 0x00000004 218 219 struct dlm_callback { 220 uint64_t seq; 221 uint32_t flags; /* DLM_CBF_ */ 222 int sb_status; /* copy to lksb status */ 223 uint8_t sb_flags; /* copy to lksb flags */ 224 int8_t mode; /* rq mode of bast, gr mode of cast */ 225 }; 226 227 struct dlm_lkb { 228 struct dlm_rsb *lkb_resource; /* the rsb */ 229 struct kref lkb_ref; 230 int lkb_nodeid; /* copied from rsb */ 231 int lkb_ownpid; /* pid of lock owner */ 232 uint32_t lkb_id; /* our lock ID */ 233 uint32_t lkb_remid; /* lock ID on remote partner */ 234 uint32_t lkb_exflags; /* external flags from caller */ 235 uint32_t lkb_sbflags; /* lksb flags */ 236 uint32_t lkb_flags; /* internal flags */ 237 uint32_t lkb_lvbseq; /* lvb sequence number */ 238 239 int8_t lkb_status; /* granted, waiting, convert */ 240 int8_t lkb_rqmode; /* requested lock mode */ 241 int8_t lkb_grmode; /* granted lock mode */ 242 int8_t lkb_highbast; /* highest mode bast sent for */ 243 244 int8_t lkb_wait_type; /* type of reply waiting for */ 245 int8_t lkb_wait_count; 246 int lkb_wait_nodeid; /* for debugging */ 247 248 struct list_head lkb_statequeue; /* rsb g/c/w list */ 249 struct list_head lkb_rsb_lookup; /* waiting for rsb lookup */ 250 struct list_head lkb_wait_reply; /* waiting for remote reply */ 251 struct list_head lkb_ownqueue; /* list of locks for a process */ 252 struct list_head lkb_time_list; 253 ktime_t lkb_timestamp; 254 ktime_t lkb_wait_time; 255 unsigned long lkb_timeout_cs; 256 257 struct mutex lkb_cb_mutex; 258 struct work_struct lkb_cb_work; 259 struct list_head lkb_cb_list; /* for ls_cb_delay or proc->asts */ 260 struct dlm_callback lkb_callbacks[DLM_CALLBACKS_SIZE]; 261 struct dlm_callback lkb_last_cast; 262 struct dlm_callback lkb_last_bast; 263 ktime_t lkb_last_cast_time; /* for debugging */ 264 ktime_t lkb_last_bast_time; /* for debugging */ 265 266 char *lkb_lvbptr; 267 struct dlm_lksb *lkb_lksb; /* caller's status block */ 268 void (*lkb_astfn) (void *astparam); 269 void (*lkb_bastfn) (void *astparam, int mode); 270 union { 271 void *lkb_astparam; /* caller's ast arg */ 272 struct dlm_user_args *lkb_ua; 273 }; 274 }; 275 276 277 struct dlm_rsb { 278 struct dlm_ls *res_ls; /* the lockspace */ 279 struct kref res_ref; 280 struct mutex res_mutex; 281 unsigned long res_flags; 282 int res_length; /* length of rsb name */ 283 int res_nodeid; 284 uint32_t res_lvbseq; 285 uint32_t res_hash; 286 uint32_t res_bucket; /* rsbtbl */ 287 unsigned long res_toss_time; 288 uint32_t res_first_lkid; 289 struct list_head res_lookup; /* lkbs waiting on first */ 290 union { 291 struct list_head res_hashchain; 292 struct rb_node res_hashnode; /* rsbtbl */ 293 }; 294 struct list_head res_grantqueue; 295 struct list_head res_convertqueue; 296 struct list_head res_waitqueue; 297 298 struct list_head res_root_list; /* used for recovery */ 299 struct list_head res_recover_list; /* used for recovery */ 300 int res_recover_locks_count; 301 302 char *res_lvbptr; 303 char res_name[DLM_RESNAME_MAXLEN+1]; 304 }; 305 306 /* find_rsb() flags */ 307 308 #define R_MASTER 1 /* only return rsb if it's a master */ 309 #define R_CREATE 2 /* create/add rsb if not found */ 310 311 /* rsb_flags */ 312 313 enum rsb_flags { 314 RSB_MASTER_UNCERTAIN, 315 RSB_VALNOTVALID, 316 RSB_VALNOTVALID_PREV, 317 RSB_NEW_MASTER, 318 RSB_NEW_MASTER2, 319 RSB_RECOVER_CONVERT, 320 RSB_LOCKS_PURGED, 321 }; 322 323 static inline void rsb_set_flag(struct dlm_rsb *r, enum rsb_flags flag) 324 { 325 __set_bit(flag, &r->res_flags); 326 } 327 328 static inline void rsb_clear_flag(struct dlm_rsb *r, enum rsb_flags flag) 329 { 330 __clear_bit(flag, &r->res_flags); 331 } 332 333 static inline int rsb_flag(struct dlm_rsb *r, enum rsb_flags flag) 334 { 335 return test_bit(flag, &r->res_flags); 336 } 337 338 339 /* dlm_header is first element of all structs sent between nodes */ 340 341 #define DLM_HEADER_MAJOR 0x00030000 342 #define DLM_HEADER_MINOR 0x00000001 343 344 #define DLM_HEADER_SLOTS 0x00000001 345 346 #define DLM_MSG 1 347 #define DLM_RCOM 2 348 349 struct dlm_header { 350 uint32_t h_version; 351 uint32_t h_lockspace; 352 uint32_t h_nodeid; /* nodeid of sender */ 353 uint16_t h_length; 354 uint8_t h_cmd; /* DLM_MSG, DLM_RCOM */ 355 uint8_t h_pad; 356 }; 357 358 359 #define DLM_MSG_REQUEST 1 360 #define DLM_MSG_CONVERT 2 361 #define DLM_MSG_UNLOCK 3 362 #define DLM_MSG_CANCEL 4 363 #define DLM_MSG_REQUEST_REPLY 5 364 #define DLM_MSG_CONVERT_REPLY 6 365 #define DLM_MSG_UNLOCK_REPLY 7 366 #define DLM_MSG_CANCEL_REPLY 8 367 #define DLM_MSG_GRANT 9 368 #define DLM_MSG_BAST 10 369 #define DLM_MSG_LOOKUP 11 370 #define DLM_MSG_REMOVE 12 371 #define DLM_MSG_LOOKUP_REPLY 13 372 #define DLM_MSG_PURGE 14 373 374 struct dlm_message { 375 struct dlm_header m_header; 376 uint32_t m_type; /* DLM_MSG_ */ 377 uint32_t m_nodeid; 378 uint32_t m_pid; 379 uint32_t m_lkid; /* lkid on sender */ 380 uint32_t m_remid; /* lkid on receiver */ 381 uint32_t m_parent_lkid; 382 uint32_t m_parent_remid; 383 uint32_t m_exflags; 384 uint32_t m_sbflags; 385 uint32_t m_flags; 386 uint32_t m_lvbseq; 387 uint32_t m_hash; 388 int m_status; 389 int m_grmode; 390 int m_rqmode; 391 int m_bastmode; 392 int m_asts; 393 int m_result; /* 0 or -EXXX */ 394 char m_extra[0]; /* name or lvb */ 395 }; 396 397 398 #define DLM_RS_NODES 0x00000001 399 #define DLM_RS_NODES_ALL 0x00000002 400 #define DLM_RS_DIR 0x00000004 401 #define DLM_RS_DIR_ALL 0x00000008 402 #define DLM_RS_LOCKS 0x00000010 403 #define DLM_RS_LOCKS_ALL 0x00000020 404 #define DLM_RS_DONE 0x00000040 405 #define DLM_RS_DONE_ALL 0x00000080 406 407 #define DLM_RCOM_STATUS 1 408 #define DLM_RCOM_NAMES 2 409 #define DLM_RCOM_LOOKUP 3 410 #define DLM_RCOM_LOCK 4 411 #define DLM_RCOM_STATUS_REPLY 5 412 #define DLM_RCOM_NAMES_REPLY 6 413 #define DLM_RCOM_LOOKUP_REPLY 7 414 #define DLM_RCOM_LOCK_REPLY 8 415 416 struct dlm_rcom { 417 struct dlm_header rc_header; 418 uint32_t rc_type; /* DLM_RCOM_ */ 419 int rc_result; /* multi-purpose */ 420 uint64_t rc_id; /* match reply with request */ 421 uint64_t rc_seq; /* sender's ls_recover_seq */ 422 uint64_t rc_seq_reply; /* remote ls_recover_seq */ 423 char rc_buf[0]; 424 }; 425 426 union dlm_packet { 427 struct dlm_header header; /* common to other two */ 428 struct dlm_message message; 429 struct dlm_rcom rcom; 430 }; 431 432 #define DLM_RSF_NEED_SLOTS 0x00000001 433 434 /* RCOM_STATUS data */ 435 struct rcom_status { 436 __le32 rs_flags; 437 __le32 rs_unused1; 438 __le64 rs_unused2; 439 }; 440 441 /* RCOM_STATUS_REPLY data */ 442 struct rcom_config { 443 __le32 rf_lvblen; 444 __le32 rf_lsflags; 445 446 /* DLM_HEADER_SLOTS adds: */ 447 __le32 rf_flags; 448 __le16 rf_our_slot; 449 __le16 rf_num_slots; 450 __le32 rf_generation; 451 __le32 rf_unused1; 452 __le64 rf_unused2; 453 }; 454 455 struct rcom_slot { 456 __le32 ro_nodeid; 457 __le16 ro_slot; 458 __le16 ro_unused1; 459 __le64 ro_unused2; 460 }; 461 462 struct rcom_lock { 463 __le32 rl_ownpid; 464 __le32 rl_lkid; 465 __le32 rl_remid; 466 __le32 rl_parent_lkid; 467 __le32 rl_parent_remid; 468 __le32 rl_exflags; 469 __le32 rl_flags; 470 __le32 rl_lvbseq; 471 __le32 rl_result; 472 int8_t rl_rqmode; 473 int8_t rl_grmode; 474 int8_t rl_status; 475 int8_t rl_asts; 476 __le16 rl_wait_type; 477 __le16 rl_namelen; 478 char rl_name[DLM_RESNAME_MAXLEN]; 479 char rl_lvb[0]; 480 }; 481 482 struct dlm_ls { 483 struct list_head ls_list; /* list of lockspaces */ 484 dlm_lockspace_t *ls_local_handle; 485 uint32_t ls_global_id; /* global unique lockspace ID */ 486 uint32_t ls_generation; 487 uint32_t ls_exflags; 488 int ls_lvblen; 489 int ls_count; /* refcount of processes in 490 the dlm using this ls */ 491 int ls_create_count; /* create/release refcount */ 492 unsigned long ls_flags; /* LSFL_ */ 493 unsigned long ls_scan_time; 494 struct kobject ls_kobj; 495 496 struct idr ls_lkbidr; 497 spinlock_t ls_lkbidr_spin; 498 499 struct dlm_rsbtable *ls_rsbtbl; 500 uint32_t ls_rsbtbl_size; 501 502 struct dlm_dirtable *ls_dirtbl; 503 uint32_t ls_dirtbl_size; 504 505 struct mutex ls_waiters_mutex; 506 struct list_head ls_waiters; /* lkbs needing a reply */ 507 508 struct mutex ls_orphans_mutex; 509 struct list_head ls_orphans; 510 511 struct mutex ls_timeout_mutex; 512 struct list_head ls_timeout; 513 514 spinlock_t ls_new_rsb_spin; 515 int ls_new_rsb_count; 516 struct list_head ls_new_rsb; /* new rsb structs */ 517 518 struct list_head ls_nodes; /* current nodes in ls */ 519 struct list_head ls_nodes_gone; /* dead node list, recovery */ 520 int ls_num_nodes; /* number of nodes in ls */ 521 int ls_low_nodeid; 522 int ls_total_weight; 523 int *ls_node_array; 524 525 int ls_slot; 526 int ls_num_slots; 527 int ls_slots_size; 528 struct dlm_slot *ls_slots; 529 530 struct dlm_rsb ls_stub_rsb; /* for returning errors */ 531 struct dlm_lkb ls_stub_lkb; /* for returning errors */ 532 struct dlm_message ls_stub_ms; /* for faking a reply */ 533 534 struct dentry *ls_debug_rsb_dentry; /* debugfs */ 535 struct dentry *ls_debug_waiters_dentry; /* debugfs */ 536 struct dentry *ls_debug_locks_dentry; /* debugfs */ 537 struct dentry *ls_debug_all_dentry; /* debugfs */ 538 539 wait_queue_head_t ls_uevent_wait; /* user part of join/leave */ 540 int ls_uevent_result; 541 struct completion ls_members_done; 542 int ls_members_result; 543 544 struct miscdevice ls_device; 545 546 struct workqueue_struct *ls_callback_wq; 547 548 /* recovery related */ 549 550 struct mutex ls_cb_mutex; 551 struct list_head ls_cb_delay; /* save for queue_work later */ 552 struct timer_list ls_timer; 553 struct task_struct *ls_recoverd_task; 554 struct mutex ls_recoverd_active; 555 spinlock_t ls_recover_lock; 556 unsigned long ls_recover_begin; /* jiffies timestamp */ 557 uint32_t ls_recover_status; /* DLM_RS_ */ 558 uint64_t ls_recover_seq; 559 struct dlm_recover *ls_recover_args; 560 struct rw_semaphore ls_in_recovery; /* block local requests */ 561 struct rw_semaphore ls_recv_active; /* block dlm_recv */ 562 struct list_head ls_requestqueue;/* queue remote requests */ 563 struct mutex ls_requestqueue_mutex; 564 struct dlm_rcom *ls_recover_buf; 565 int ls_recover_nodeid; /* for debugging */ 566 uint64_t ls_rcom_seq; 567 spinlock_t ls_rcom_spin; 568 struct list_head ls_recover_list; 569 spinlock_t ls_recover_list_lock; 570 int ls_recover_list_count; 571 wait_queue_head_t ls_wait_general; 572 struct mutex ls_clear_proc_locks; 573 574 struct list_head ls_root_list; /* root resources */ 575 struct rw_semaphore ls_root_sem; /* protect root_list */ 576 577 const struct dlm_lockspace_ops *ls_ops; 578 void *ls_ops_arg; 579 580 int ls_namelen; 581 char ls_name[1]; 582 }; 583 584 #define LSFL_WORK 0 585 #define LSFL_RUNNING 1 586 #define LSFL_RECOVERY_STOP 2 587 #define LSFL_RCOM_READY 3 588 #define LSFL_RCOM_WAIT 4 589 #define LSFL_UEVENT_WAIT 5 590 #define LSFL_TIMEWARN 6 591 #define LSFL_CB_DELAY 7 592 593 /* much of this is just saving user space pointers associated with the 594 lock that we pass back to the user lib with an ast */ 595 596 struct dlm_user_args { 597 struct dlm_user_proc *proc; /* each process that opens the lockspace 598 device has private data 599 (dlm_user_proc) on the struct file, 600 the process's locks point back to it*/ 601 struct dlm_lksb lksb; 602 struct dlm_lksb __user *user_lksb; 603 void __user *castparam; 604 void __user *castaddr; 605 void __user *bastparam; 606 void __user *bastaddr; 607 uint64_t xid; 608 }; 609 610 #define DLM_PROC_FLAGS_CLOSING 1 611 #define DLM_PROC_FLAGS_COMPAT 2 612 613 /* locks list is kept so we can remove all a process's locks when it 614 exits (or orphan those that are persistent) */ 615 616 struct dlm_user_proc { 617 dlm_lockspace_t *lockspace; 618 unsigned long flags; /* DLM_PROC_FLAGS */ 619 struct list_head asts; 620 spinlock_t asts_spin; 621 struct list_head locks; 622 spinlock_t locks_spin; 623 struct list_head unlocking; 624 wait_queue_head_t wait; 625 }; 626 627 static inline int dlm_locking_stopped(struct dlm_ls *ls) 628 { 629 return !test_bit(LSFL_RUNNING, &ls->ls_flags); 630 } 631 632 static inline int dlm_recovery_stopped(struct dlm_ls *ls) 633 { 634 return test_bit(LSFL_RECOVERY_STOP, &ls->ls_flags); 635 } 636 637 static inline int dlm_no_directory(struct dlm_ls *ls) 638 { 639 return (ls->ls_exflags & DLM_LSFL_NODIR) ? 1 : 0; 640 } 641 642 int dlm_netlink_init(void); 643 void dlm_netlink_exit(void); 644 void dlm_timeout_warn(struct dlm_lkb *lkb); 645 int dlm_plock_init(void); 646 void dlm_plock_exit(void); 647 648 #ifdef CONFIG_DLM_DEBUG 649 int dlm_register_debugfs(void); 650 void dlm_unregister_debugfs(void); 651 int dlm_create_debug_file(struct dlm_ls *ls); 652 void dlm_delete_debug_file(struct dlm_ls *ls); 653 #else 654 static inline int dlm_register_debugfs(void) { return 0; } 655 static inline void dlm_unregister_debugfs(void) { } 656 static inline int dlm_create_debug_file(struct dlm_ls *ls) { return 0; } 657 static inline void dlm_delete_debug_file(struct dlm_ls *ls) { } 658 #endif 659 660 #endif /* __DLM_INTERNAL_DOT_H__ */ 661 662