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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_MDC
40 # include <liblustre.h>
42 #include <lustre_net.h>
43 #include <lustre/lustre_idl.h>
44 #include "mdc_internal.h"
47 /* some liblustre hackings here */
53 static void __mdc_pack_body(struct mdt_body *b, __u32 suppgid)
58 b->uid = cfs_curproc_uid();
59 b->gid = cfs_curproc_gid();
60 b->fsuid = cfs_curproc_fsuid();
61 b->fsgid = cfs_curproc_fsgid();
62 b->capability = cfs_curproc_cap_pack();
65 void mdc_pack_capa(struct ptlrpc_request *req, const struct req_msg_field *field,
68 struct req_capsule *pill = &req->rq_pill;
69 struct lustre_capa *c;
72 LASSERT(req_capsule_get_size(pill, field, RCL_CLIENT) == 0);
76 c = req_capsule_client_get(pill, field);
79 DEBUG_CAPA(D_SEC, c, "pack");
82 void mdc_is_subdir_pack(struct ptlrpc_request *req, const struct lu_fid *pfid,
83 const struct lu_fid *cfid, int flags)
85 struct mdt_body *b = req_capsule_client_get(&req->rq_pill,
90 b->valid = OBD_MD_FLID;
97 void mdc_swap_layouts_pack(struct ptlrpc_request *req,
98 struct md_op_data *op_data)
100 struct mdt_body *b = req_capsule_client_get(&req->rq_pill,
103 __mdc_pack_body(b, op_data->op_suppgids[0]);
104 b->fid1 = op_data->op_fid1;
105 b->fid2 = op_data->op_fid2;
106 b->valid |= OBD_MD_FLID;
108 mdc_pack_capa(req, &RMF_CAPA1, op_data->op_capa1);
109 mdc_pack_capa(req, &RMF_CAPA2, op_data->op_capa2);
112 void mdc_pack_body(struct ptlrpc_request *req,
113 const struct lu_fid *fid, struct obd_capa *oc,
114 __u64 valid, int ea_size, __u32 suppgid, int flags)
116 struct mdt_body *b = req_capsule_client_get(&req->rq_pill,
120 b->eadatasize = ea_size;
122 __mdc_pack_body(b, suppgid);
125 b->valid |= OBD_MD_FLID;
126 mdc_pack_capa(req, &RMF_CAPA1, oc);
130 void mdc_readdir_pack(struct ptlrpc_request *req, __u64 pgoff,
131 __u32 size, const struct lu_fid *fid, struct obd_capa *oc)
133 struct mdt_body *b = req_capsule_client_get(&req->rq_pill,
136 b->valid |= OBD_MD_FLID;
137 b->size = pgoff; /* !! */
138 b->nlink = size; /* !! */
139 __mdc_pack_body(b, -1);
140 b->mode = LUDA_FID | LUDA_TYPE;
142 mdc_pack_capa(req, &RMF_CAPA1, oc);
145 /* packing of MDS records */
146 void mdc_create_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
147 const void *data, int datalen, __u32 mode,
148 __u32 uid, __u32 gid, cfs_cap_t cap_effective, __u64 rdev)
150 struct mdt_rec_create *rec;
154 CLASSERT(sizeof(struct mdt_rec_reint) == sizeof(struct mdt_rec_create));
155 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
158 rec->cr_opcode = REINT_CREATE;
161 rec->cr_cap = cap_effective;
162 rec->cr_fid1 = op_data->op_fid1;
163 rec->cr_fid2 = op_data->op_fid2;
166 rec->cr_time = op_data->op_mod_time;
167 rec->cr_suppgid1 = op_data->op_suppgids[0];
168 rec->cr_suppgid2 = op_data->op_suppgids[1];
169 flags = op_data->op_flags & MF_SOM_LOCAL_FLAGS;
170 if (op_data->op_bias & MDS_CREATE_VOLATILE)
171 flags |= MDS_OPEN_VOLATILE;
172 set_mrc_cr_flags(rec, flags);
173 rec->cr_bias = op_data->op_bias;
174 rec->cr_umask = cfs_curproc_umask();
176 mdc_pack_capa(req, &RMF_CAPA1, op_data->op_capa1);
178 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
179 LOGL0(op_data->op_name, op_data->op_namelen, tmp);
182 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
183 memcpy(tmp, data, datalen);
187 static __u64 mds_pack_open_flags(__u64 flags, __u32 mode)
189 __u64 cr_flags = (flags & (FMODE_READ | FMODE_WRITE |
190 MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS |
191 MDS_OPEN_OWNEROVERRIDE | MDS_OPEN_LOCK |
192 MDS_OPEN_BY_FID | MDS_OPEN_LEASE));
194 cr_flags |= MDS_OPEN_CREAT;
196 cr_flags |= MDS_OPEN_EXCL;
198 cr_flags |= MDS_OPEN_TRUNC;
199 if (flags & O_APPEND)
200 cr_flags |= MDS_OPEN_APPEND;
202 cr_flags |= MDS_OPEN_SYNC;
203 if (flags & O_DIRECTORY)
204 cr_flags |= MDS_OPEN_DIRECTORY;
206 if (flags & FMODE_EXEC)
207 cr_flags |= MDS_FMODE_EXEC;
209 if (flags & O_LOV_DELAY_CREATE)
210 cr_flags |= MDS_OPEN_DELAY_CREATE;
212 if ((flags & O_NOACCESS) || (flags & O_NONBLOCK))
213 cr_flags |= MDS_OPEN_NORESTORE;
218 /* packing of MDS records */
219 void mdc_open_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
220 __u32 mode, __u64 rdev, __u64 flags, const void *lmm,
223 struct mdt_rec_create *rec;
227 CLASSERT(sizeof(struct mdt_rec_reint) == sizeof(struct mdt_rec_create));
228 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
230 /* XXX do something about time, uid, gid */
231 rec->cr_opcode = REINT_OPEN;
232 rec->cr_fsuid = cfs_curproc_fsuid();
233 rec->cr_fsgid = cfs_curproc_fsgid();
234 rec->cr_cap = cfs_curproc_cap_pack();
235 if (op_data != NULL) {
236 rec->cr_fid1 = op_data->op_fid1;
237 rec->cr_fid2 = op_data->op_fid2;
240 cr_flags = mds_pack_open_flags(flags, mode);
242 rec->cr_time = op_data->op_mod_time;
243 rec->cr_suppgid1 = op_data->op_suppgids[0];
244 rec->cr_suppgid2 = op_data->op_suppgids[1];
245 rec->cr_bias = op_data->op_bias;
246 rec->cr_umask = cfs_curproc_umask();
247 rec->cr_old_handle = op_data->op_handle;
249 mdc_pack_capa(req, &RMF_CAPA1, op_data->op_capa1);
250 /* the next buffer is child capa, which is used for replay,
251 * will be packed from the data in reply message. */
253 if (op_data->op_name) {
254 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
255 LOGL0(op_data->op_name, op_data->op_namelen, tmp);
256 if (op_data->op_bias & MDS_CREATE_VOLATILE)
257 cr_flags |= MDS_OPEN_VOLATILE;
261 cr_flags |= MDS_OPEN_HAS_EA;
263 /*XXX a hack for liblustre to set EA (LL_IOC_LOV_SETSTRIPE) */
264 rec->cr_fid2 = op_data->op_fid2;
266 tmp = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
267 memcpy(tmp, lmm, lmmlen);
269 set_mrc_cr_flags(rec, cr_flags);
272 static inline __u64 attr_pack(unsigned int ia_valid) {
275 if (ia_valid & ATTR_MODE)
276 sa_valid |= MDS_ATTR_MODE;
277 if (ia_valid & ATTR_UID)
278 sa_valid |= MDS_ATTR_UID;
279 if (ia_valid & ATTR_GID)
280 sa_valid |= MDS_ATTR_GID;
281 if (ia_valid & ATTR_SIZE)
282 sa_valid |= MDS_ATTR_SIZE;
283 if (ia_valid & ATTR_ATIME)
284 sa_valid |= MDS_ATTR_ATIME;
285 if (ia_valid & ATTR_MTIME)
286 sa_valid |= MDS_ATTR_MTIME;
287 if (ia_valid & ATTR_CTIME)
288 sa_valid |= MDS_ATTR_CTIME;
289 if (ia_valid & ATTR_ATIME_SET)
290 sa_valid |= MDS_ATTR_ATIME_SET;
291 if (ia_valid & ATTR_MTIME_SET)
292 sa_valid |= MDS_ATTR_MTIME_SET;
293 if (ia_valid & ATTR_FORCE)
294 sa_valid |= MDS_ATTR_FORCE;
295 if (ia_valid & ATTR_ATTR_FLAG)
296 sa_valid |= MDS_ATTR_ATTR_FLAG;
297 if (ia_valid & ATTR_KILL_SUID)
298 sa_valid |= MDS_ATTR_KILL_SUID;
299 if (ia_valid & ATTR_KILL_SGID)
300 sa_valid |= MDS_ATTR_KILL_SGID;
301 if (ia_valid & ATTR_CTIME_SET)
302 sa_valid |= MDS_ATTR_CTIME_SET;
303 if (ia_valid & ATTR_FROM_OPEN)
304 sa_valid |= MDS_ATTR_FROM_OPEN;
305 if (ia_valid & ATTR_BLOCKS)
306 sa_valid |= MDS_ATTR_BLOCKS;
307 if (ia_valid & MDS_OPEN_OWNEROVERRIDE)
308 /* NFSD hack (see bug 5781) */
309 sa_valid |= MDS_OPEN_OWNEROVERRIDE;
313 static void mdc_setattr_pack_rec(struct mdt_rec_setattr *rec,
314 struct md_op_data *op_data)
316 rec->sa_opcode = REINT_SETATTR;
317 rec->sa_fsuid = cfs_curproc_fsuid();
318 rec->sa_fsgid = cfs_curproc_fsgid();
319 rec->sa_cap = cfs_curproc_cap_pack();
320 rec->sa_suppgid = -1;
322 rec->sa_fid = op_data->op_fid1;
323 rec->sa_valid = attr_pack(op_data->op_attr.ia_valid);
324 rec->sa_mode = op_data->op_attr.ia_mode;
325 rec->sa_uid = op_data->op_attr.ia_uid;
326 rec->sa_gid = op_data->op_attr.ia_gid;
327 rec->sa_size = op_data->op_attr.ia_size;
328 rec->sa_blocks = op_data->op_attr_blocks;
329 rec->sa_atime = LTIME_S(op_data->op_attr.ia_atime);
330 rec->sa_mtime = LTIME_S(op_data->op_attr.ia_mtime);
331 rec->sa_ctime = LTIME_S(op_data->op_attr.ia_ctime);
332 rec->sa_attr_flags = ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags;
333 if ((op_data->op_attr.ia_valid & ATTR_GID) &&
334 cfs_curproc_is_in_groups(op_data->op_attr.ia_gid))
335 rec->sa_suppgid = op_data->op_attr.ia_gid;
337 rec->sa_suppgid = op_data->op_suppgids[0];
339 rec->sa_bias = op_data->op_bias;
342 static void mdc_ioepoch_pack(struct mdt_ioepoch *epoch,
343 struct md_op_data *op_data)
345 memcpy(&epoch->handle, &op_data->op_handle, sizeof(epoch->handle));
346 epoch->ioepoch = op_data->op_ioepoch;
347 epoch->flags = op_data->op_flags & MF_SOM_LOCAL_FLAGS;
350 void mdc_setattr_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
351 void *ea, int ealen, void *ea2, int ea2len)
353 struct mdt_rec_setattr *rec;
354 struct mdt_ioepoch *epoch;
355 struct lov_user_md *lum = NULL;
357 CLASSERT(sizeof(struct mdt_rec_reint) ==sizeof(struct mdt_rec_setattr));
358 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
359 mdc_setattr_pack_rec(rec, op_data);
361 mdc_pack_capa(req, &RMF_CAPA1, op_data->op_capa1);
363 if (op_data->op_flags & (MF_SOM_CHANGE | MF_EPOCH_OPEN)) {
364 epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH);
365 mdc_ioepoch_pack(epoch, op_data);
371 lum = req_capsule_client_get(&req->rq_pill, &RMF_EADATA);
372 if (ea == NULL) { /* Remove LOV EA */
373 lum->lmm_magic = LOV_USER_MAGIC_V1;
374 lum->lmm_stripe_size = 0;
375 lum->lmm_stripe_count = 0;
376 lum->lmm_stripe_offset = (typeof(lum->lmm_stripe_offset))(-1);
378 memcpy(lum, ea, ealen);
384 memcpy(req_capsule_client_get(&req->rq_pill, &RMF_LOGCOOKIES), ea2,
388 void mdc_unlink_pack(struct ptlrpc_request *req, struct md_op_data *op_data)
390 struct mdt_rec_unlink *rec;
393 CLASSERT(sizeof(struct mdt_rec_reint) == sizeof(struct mdt_rec_unlink));
394 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
395 LASSERT(rec != NULL);
397 rec->ul_opcode = op_data->op_cli_flags & CLI_RM_ENTRY ?
398 REINT_RMENTRY : REINT_UNLINK;
399 rec->ul_fsuid = op_data->op_fsuid;
400 rec->ul_fsgid = op_data->op_fsgid;
401 rec->ul_cap = op_data->op_cap;
402 rec->ul_mode = op_data->op_mode;
403 rec->ul_suppgid1= op_data->op_suppgids[0];
404 rec->ul_suppgid2= -1;
405 rec->ul_fid1 = op_data->op_fid1;
406 rec->ul_fid2 = op_data->op_fid2;
407 rec->ul_time = op_data->op_mod_time;
408 rec->ul_bias = op_data->op_bias;
410 mdc_pack_capa(req, &RMF_CAPA1, op_data->op_capa1);
412 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
413 LASSERT(tmp != NULL);
414 LOGL0(op_data->op_name, op_data->op_namelen, tmp);
417 void mdc_link_pack(struct ptlrpc_request *req, struct md_op_data *op_data)
419 struct mdt_rec_link *rec;
422 CLASSERT(sizeof(struct mdt_rec_reint) == sizeof(struct mdt_rec_link));
423 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
424 LASSERT (rec != NULL);
426 rec->lk_opcode = REINT_LINK;
427 rec->lk_fsuid = op_data->op_fsuid;//current->fsuid;
428 rec->lk_fsgid = op_data->op_fsgid;//current->fsgid;
429 rec->lk_cap = op_data->op_cap;//current->cap_effective;
430 rec->lk_suppgid1 = op_data->op_suppgids[0];
431 rec->lk_suppgid2 = op_data->op_suppgids[1];
432 rec->lk_fid1 = op_data->op_fid1;
433 rec->lk_fid2 = op_data->op_fid2;
434 rec->lk_time = op_data->op_mod_time;
435 rec->lk_bias = op_data->op_bias;
437 mdc_pack_capa(req, &RMF_CAPA1, op_data->op_capa1);
438 mdc_pack_capa(req, &RMF_CAPA2, op_data->op_capa2);
440 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
441 LOGL0(op_data->op_name, op_data->op_namelen, tmp);
444 void mdc_rename_pack(struct ptlrpc_request *req, struct md_op_data *op_data,
445 const char *old, int oldlen, const char *new, int newlen)
447 struct mdt_rec_rename *rec;
450 CLASSERT(sizeof(struct mdt_rec_reint) == sizeof(struct mdt_rec_rename));
451 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
453 /* XXX do something about time, uid, gid */
454 rec->rn_opcode = REINT_RENAME;
455 rec->rn_fsuid = op_data->op_fsuid;
456 rec->rn_fsgid = op_data->op_fsgid;
457 rec->rn_cap = op_data->op_cap;
458 rec->rn_suppgid1 = op_data->op_suppgids[0];
459 rec->rn_suppgid2 = op_data->op_suppgids[1];
460 rec->rn_fid1 = op_data->op_fid1;
461 rec->rn_fid2 = op_data->op_fid2;
462 rec->rn_time = op_data->op_mod_time;
463 rec->rn_mode = op_data->op_mode;
464 rec->rn_bias = op_data->op_bias;
466 mdc_pack_capa(req, &RMF_CAPA1, op_data->op_capa1);
467 mdc_pack_capa(req, &RMF_CAPA2, op_data->op_capa2);
469 tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
470 LOGL0(old, oldlen, tmp);
473 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SYMTGT);
474 LOGL0(new, newlen, tmp);
478 void mdc_getattr_pack(struct ptlrpc_request *req, __u64 valid, int flags,
479 struct md_op_data *op_data, int ea_size)
481 struct mdt_body *b = req_capsule_client_get(&req->rq_pill,
485 if (op_data->op_bias & MDS_CHECK_SPLIT)
486 b->valid |= OBD_MD_FLCKSPLIT;
487 if (op_data->op_bias & MDS_CROSS_REF)
488 b->valid |= OBD_MD_FLCROSSREF;
489 b->eadatasize = ea_size;
491 __mdc_pack_body(b, op_data->op_suppgids[0]);
493 b->fid1 = op_data->op_fid1;
494 b->fid2 = op_data->op_fid2;
495 b->valid |= OBD_MD_FLID;
497 mdc_pack_capa(req, &RMF_CAPA1, op_data->op_capa1);
499 if (op_data->op_name) {
500 char *tmp = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
501 LOGL0(op_data->op_name, op_data->op_namelen, tmp);
506 void mdc_close_pack(struct ptlrpc_request *req, struct md_op_data *op_data)
508 struct mdt_ioepoch *epoch;
509 struct mdt_rec_setattr *rec;
511 epoch = req_capsule_client_get(&req->rq_pill, &RMF_MDT_EPOCH);
512 rec = req_capsule_client_get(&req->rq_pill, &RMF_REC_REINT);
514 mdc_setattr_pack_rec(rec, op_data);
515 mdc_pack_capa(req, &RMF_CAPA1, op_data->op_capa1);
516 mdc_ioepoch_pack(epoch, op_data);
519 static int mdc_req_avail(struct client_obd *cli, struct mdc_cache_waiter *mcw)
523 client_obd_list_lock(&cli->cl_loi_list_lock);
524 rc = cfs_list_empty(&mcw->mcw_entry);
525 client_obd_list_unlock(&cli->cl_loi_list_lock);
529 /* We record requests in flight in cli->cl_r_in_flight here.
530 * There is only one write rpc possible in mdc anyway. If this to change
531 * in the future - the code may need to be revisited. */
532 int mdc_enter_request(struct client_obd *cli)
535 struct mdc_cache_waiter mcw;
536 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
538 client_obd_list_lock(&cli->cl_loi_list_lock);
539 if (cli->cl_r_in_flight >= cli->cl_max_rpcs_in_flight) {
540 cfs_list_add_tail(&mcw.mcw_entry, &cli->cl_cache_waiters);
541 cfs_waitq_init(&mcw.mcw_waitq);
542 client_obd_list_unlock(&cli->cl_loi_list_lock);
543 rc = l_wait_event(mcw.mcw_waitq, mdc_req_avail(cli, &mcw), &lwi);
545 client_obd_list_lock(&cli->cl_loi_list_lock);
546 if (cfs_list_empty(&mcw.mcw_entry))
547 cli->cl_r_in_flight--;
548 cfs_list_del_init(&mcw.mcw_entry);
549 client_obd_list_unlock(&cli->cl_loi_list_lock);
552 cli->cl_r_in_flight++;
553 client_obd_list_unlock(&cli->cl_loi_list_lock);
558 void mdc_exit_request(struct client_obd *cli)
561 struct mdc_cache_waiter *mcw;
563 client_obd_list_lock(&cli->cl_loi_list_lock);
564 cli->cl_r_in_flight--;
565 cfs_list_for_each_safe(l, tmp, &cli->cl_cache_waiters) {
566 if (cli->cl_r_in_flight >= cli->cl_max_rpcs_in_flight) {
567 /* No free request slots anymore */
571 mcw = cfs_list_entry(l, struct mdc_cache_waiter, mcw_entry);
572 cfs_list_del_init(&mcw->mcw_entry);
573 cli->cl_r_in_flight++;
574 cfs_waitq_signal(&mcw->mcw_waitq);
576 /* Empty waiting list? Decrease reqs in-flight number */
578 client_obd_list_unlock(&cli->cl_loi_list_lock);