1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/ptlrpc/layout.c
38 * Lustre Metadata Target (mdt) request handler
40 * Author: Nikita Danilov <nikita@clusterfs.com>
43 #if !defined(__REQ_LAYOUT_USER__)
46 # define EXPORT_SYMTAB
48 #define DEBUG_SUBSYSTEM S_RPC
51 #include <linux/module.h>
53 # include <liblustre.h>
56 /* LUSTRE_VERSION_CODE */
57 #include <lustre_ver.h>
59 #include <obd_support.h>
60 /* lustre_swab_mdt_body */
61 #include <lustre/lustre_idl.h>
62 /* obd2cli_tgt() (required by DEBUG_REQ()) */
65 /* __REQ_LAYOUT_USER__ */
67 /* struct ptlrpc_request, lustre_msg* */
68 #include <lustre_req_layout.h>
69 #include <lustre_acl.h>
72 * empty set of fields... for suitable definition of emptiness.
74 static const struct req_msg_field *empty[] = {
78 static const struct req_msg_field *mgs_target_info_only[] = {
83 static const struct req_msg_field *mgs_set_info[] = {
88 static const struct req_msg_field *log_cancel_client[] = {
93 static const struct req_msg_field *mdt_body_only[] = {
98 static const struct req_msg_field *mdt_body_capa[] = {
104 static const struct req_msg_field *quotactl_only[] = {
108 static const struct req_msg_field *quota_adjust_qunit_only[] = {
110 &RMF_QUOTA_ADJUST_QUNIT
113 static const struct req_msg_field *qunit_data_only[] = {
118 static const struct req_msg_field *mdt_close_client[] = {
125 static const struct req_msg_field *obd_statfs_server[] = {
130 static const struct req_msg_field *seq_query_client[] = {
136 static const struct req_msg_field *seq_query_server[] = {
141 static const struct req_msg_field *fld_query_client[] = {
147 static const struct req_msg_field *fld_query_server[] = {
152 static const struct req_msg_field *mds_getattr_name_client[] = {
159 static const struct req_msg_field *mds_reint_client[] = {
164 static const struct req_msg_field *mds_reint_create_client[] = {
171 static const struct req_msg_field *mds_reint_create_slave_client[] = {
180 static const struct req_msg_field *mds_reint_create_rmt_acl_client[] = {
189 static const struct req_msg_field *mds_reint_create_sym_client[] = {
198 static const struct req_msg_field *mds_reint_open_client[] = {
207 static const struct req_msg_field *mds_reint_open_server[] = {
216 static const struct req_msg_field *mds_reint_unlink_client[] = {
224 static const struct req_msg_field *mds_reint_link_client[] = {
233 static const struct req_msg_field *mds_reint_rename_client[] = {
243 static const struct req_msg_field *mds_last_unlink_server[] = {
252 static const struct req_msg_field *mds_reint_setattr_client[] = {
262 static const struct req_msg_field *mds_reint_setxattr_client[] = {
270 static const struct req_msg_field *obd_connect_client[] = {
278 static const struct req_msg_field *obd_connect_server[] = {
283 static const struct req_msg_field *mds_set_info_client[] = {
289 static const struct req_msg_field *mds_getinfo_client[] = {
295 static const struct req_msg_field *mds_getinfo_server[] = {
300 static const struct req_msg_field *ldlm_enqueue_client[] = {
305 static const struct req_msg_field *ldlm_enqueue_server[] = {
310 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
316 static const struct req_msg_field *ldlm_cp_callback_client[] = {
322 static const struct req_msg_field *ldlm_gl_callback_server[] = {
327 static const struct req_msg_field *ldlm_intent_client[] = {
334 static const struct req_msg_field *ldlm_intent_server[] = {
342 static const struct req_msg_field *ldlm_intent_open_server[] = {
352 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
356 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
361 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
370 static const struct req_msg_field *ldlm_intent_create_client[] = {
374 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
380 static const struct req_msg_field *ldlm_intent_open_client[] = {
384 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
392 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
396 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
401 static const struct req_msg_field *mds_getxattr_client[] = {
409 static const struct req_msg_field *mds_getxattr_server[] = {
415 static const struct req_msg_field *mds_getattr_server[] = {
424 static const struct req_msg_field *mds_setattr_server[] = {
433 static const struct req_msg_field *llog_catinfo_client[] = {
439 static const struct req_msg_field *llog_catinfo_server[] = {
444 static const struct req_msg_field *llog_origin_handle_create_client[] = {
450 static const struct req_msg_field *llogd_body_only[] = {
455 static const struct req_msg_field *llog_log_hdr_only[] = {
460 static const struct req_msg_field *llogd_conn_body_only[] = {
465 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
471 static const struct req_msg_field *ost_body_only[] = {
476 static const struct req_msg_field *ost_body_capa[] = {
482 static const struct req_msg_field *ost_destroy_client[] = {
490 static const struct req_msg_field *ost_brw_client[] = {
498 static const struct req_msg_field *ost_brw_server[] = {
504 static const struct req_msg_field *ost_set_info_client[] = {
510 static const struct req_msg_field *ost_get_info_generic_server[] = {
515 static const struct req_msg_field *ost_get_info_generic_client[] = {
520 static const struct req_msg_field *ost_get_last_id_server[] = {
525 static const struct req_msg_field *ost_get_fiemap_client[] = {
531 static const struct req_msg_field *ost_get_fiemap_server[] = {
536 static const struct req_format *req_formats[] = {
550 &RQF_MDS_GETATTR_NAME,
559 &RQF_MDS_DONE_WRITING,
561 &RQF_MDS_REINT_CREATE,
562 &RQF_MDS_REINT_CREATE_RMT_ACL,
563 &RQF_MDS_REINT_CREATE_SLAVE,
564 &RQF_MDS_REINT_CREATE_SYM,
566 &RQF_MDS_REINT_UNLINK,
568 &RQF_MDS_REINT_RENAME,
569 &RQF_MDS_REINT_SETATTR,
570 &RQF_MDS_REINT_SETXATTR,
573 &RQF_MDS_QUOTA_DQACQ,
579 &RQF_OST_QUOTA_ADJUST_QUNIT,
589 &RQF_OST_SET_GRANT_INFO,
590 &RQF_OST_GET_INFO_GENERIC,
591 &RQF_OST_GET_INFO_LAST_ID,
592 &RQF_OST_GET_INFO_FIEMAP,
594 &RQF_LDLM_ENQUEUE_LVB,
598 &RQF_LDLM_CP_CALLBACK,
599 &RQF_LDLM_BL_CALLBACK,
600 &RQF_LDLM_GL_CALLBACK,
602 &RQF_LDLM_INTENT_GETATTR,
603 &RQF_LDLM_INTENT_OPEN,
604 &RQF_LDLM_INTENT_CREATE,
605 &RQF_LDLM_INTENT_UNLINK,
608 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
609 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
610 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
611 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
612 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
613 &RQF_LLOG_ORIGIN_CONNECT
616 struct req_msg_field {
618 const char *rmf_name;
620 * Field length. (-1) means "variable length".
623 void (*rmf_swabber)(void *);
624 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
628 RMF_F_STRING = 1 << 0,
629 RMF_F_NO_SIZE_CHECK = 1 << 1
637 #define DEFINE_MSGF(name, flags, size, swabber) { \
638 .rmf_name = (name), \
639 .rmf_flags = (flags), \
640 .rmf_size = (size), \
641 .rmf_swabber = (void (*)(void*))(swabber) \
644 const struct req_msg_field RMF_GENERIC_DATA =
645 DEFINE_MSGF("generic_data", 0,
647 EXPORT_SYMBOL(RMF_GENERIC_DATA);
649 const struct req_msg_field RMF_MGS_TARGET_INFO =
650 DEFINE_MSGF("mgs_target_info", 0,
651 sizeof(struct mgs_target_info),
652 lustre_swab_mgs_target_info);
653 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
655 const struct req_msg_field RMF_MGS_SEND_PARAM =
656 DEFINE_MSGF("mgs_send_param", 0,
657 sizeof(struct mgs_send_param),
659 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
661 const struct req_msg_field RMF_SETINFO_VAL =
662 DEFINE_MSGF("setinfo_val", 0, -1, NULL);
663 EXPORT_SYMBOL(RMF_SETINFO_VAL);
665 const struct req_msg_field RMF_GETINFO_KEY =
666 DEFINE_MSGF("getinfo_key", 0, -1, NULL);
667 EXPORT_SYMBOL(RMF_GETINFO_KEY);
669 const struct req_msg_field RMF_GETINFO_VALLEN =
670 DEFINE_MSGF("getinfo_vallen", 0,
671 sizeof(__u32), lustre_swab_generic_32s);
672 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
674 const struct req_msg_field RMF_GETINFO_VAL =
675 DEFINE_MSGF("getinfo_val", 0, -1, NULL);
676 EXPORT_SYMBOL(RMF_GETINFO_VAL);
678 const struct req_msg_field RMF_SEQ_OPC =
679 DEFINE_MSGF("seq_query_opc", 0,
680 sizeof(__u32), lustre_swab_generic_32s);
681 EXPORT_SYMBOL(RMF_SEQ_OPC);
683 const struct req_msg_field RMF_SEQ_RANGE =
684 DEFINE_MSGF("seq_query_range", 0,
685 sizeof(struct lu_seq_range), lustre_swab_lu_seq_range);
686 EXPORT_SYMBOL(RMF_SEQ_RANGE);
688 const struct req_msg_field RMF_FLD_OPC =
689 DEFINE_MSGF("fld_query_opc", 0,
690 sizeof(__u32), lustre_swab_generic_32s);
691 EXPORT_SYMBOL(RMF_FLD_OPC);
693 const struct req_msg_field RMF_FLD_MDFLD =
694 DEFINE_MSGF("fld_query_mdfld", 0,
695 sizeof(struct lu_seq_range), lustre_swab_lu_seq_range);
696 EXPORT_SYMBOL(RMF_FLD_MDFLD);
698 const struct req_msg_field RMF_MDT_BODY =
699 DEFINE_MSGF("mdt_body", 0,
700 sizeof(struct mdt_body), lustre_swab_mdt_body);
701 EXPORT_SYMBOL(RMF_MDT_BODY);
703 const struct req_msg_field RMF_OBD_QUOTACTL =
704 DEFINE_MSGF("obd_quotactl", 0,
705 sizeof(struct obd_quotactl), lustre_swab_obd_quotactl);
706 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
708 const struct req_msg_field RMF_QUOTA_ADJUST_QUNIT =
709 DEFINE_MSGF("quota_adjust_qunit", 0,
710 sizeof(struct quota_adjust_qunit),
711 lustre_swab_quota_adjust_qunit);
712 EXPORT_SYMBOL(RMF_QUOTA_ADJUST_QUNIT);
714 const struct req_msg_field RMF_QUNIT_DATA =
715 DEFINE_MSGF("qunit_data", 0,
716 sizeof(struct qunit_data), NULL);
717 EXPORT_SYMBOL(RMF_QUNIT_DATA);
719 const struct req_msg_field RMF_MDT_EPOCH =
720 DEFINE_MSGF("mdt_epoch", 0,
721 sizeof(struct mdt_epoch), lustre_swab_mdt_epoch);
722 EXPORT_SYMBOL(RMF_MDT_EPOCH);
724 const struct req_msg_field RMF_PTLRPC_BODY =
725 DEFINE_MSGF("ptlrpc_body", 0,
726 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body);
727 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
729 const struct req_msg_field RMF_OBD_STATFS =
730 DEFINE_MSGF("obd_statfs", 0,
731 sizeof(struct obd_statfs), lustre_swab_obd_statfs);
732 EXPORT_SYMBOL(RMF_OBD_STATFS);
734 const struct req_msg_field RMF_SETINFO_KEY =
735 DEFINE_MSGF("setinfo_key", 0, -1, NULL);
736 EXPORT_SYMBOL(RMF_SETINFO_KEY);
738 const struct req_msg_field RMF_NAME =
739 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL);
740 EXPORT_SYMBOL(RMF_NAME);
742 const struct req_msg_field RMF_SYMTGT =
743 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL);
744 EXPORT_SYMBOL(RMF_SYMTGT);
746 const struct req_msg_field RMF_TGTUUID =
747 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL);
748 EXPORT_SYMBOL(RMF_TGTUUID);
750 const struct req_msg_field RMF_CLUUID =
751 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL);
752 EXPORT_SYMBOL(RMF_CLUUID);
754 const struct req_msg_field RMF_STRING =
755 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL);
756 EXPORT_SYMBOL(RMF_STRING);
758 const struct req_msg_field RMF_LLOGD_BODY =
759 DEFINE_MSGF("llogd_body", 0,
760 sizeof(struct llogd_body), lustre_swab_llogd_body);
761 EXPORT_SYMBOL(RMF_LLOGD_BODY);
763 const struct req_msg_field RMF_LLOG_LOG_HDR =
764 DEFINE_MSGF("llog_log_hdr", 0,
765 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr);
766 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
768 const struct req_msg_field RMF_LLOGD_CONN_BODY =
769 DEFINE_MSGF("llogd_conn_body", 0,
770 sizeof(struct llogd_conn_body),
771 lustre_swab_llogd_conn_body);
772 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
775 * connection handle received in MDS_CONNECT request.
779 const struct req_msg_field RMF_CONN =
780 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL);
781 EXPORT_SYMBOL(RMF_CONN);
783 const struct req_msg_field RMF_CONNECT_DATA =
785 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
786 sizeof(struct obd_connect_data), lustre_swab_connect);
787 EXPORT_SYMBOL(RMF_CONNECT_DATA);
789 const struct req_msg_field RMF_DLM_REQ =
790 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
791 sizeof(struct ldlm_request), lustre_swab_ldlm_request);
792 EXPORT_SYMBOL(RMF_DLM_REQ);
794 const struct req_msg_field RMF_DLM_REP =
795 DEFINE_MSGF("dlm_rep", 0,
796 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply);
797 EXPORT_SYMBOL(RMF_DLM_REP);
799 const struct req_msg_field RMF_LDLM_INTENT =
800 DEFINE_MSGF("ldlm_intent", 0,
801 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent);
802 EXPORT_SYMBOL(RMF_LDLM_INTENT);
804 const struct req_msg_field RMF_DLM_LVB =
805 DEFINE_MSGF("dlm_lvb", 0, sizeof(struct ost_lvb), NULL);
806 EXPORT_SYMBOL(RMF_DLM_LVB);
808 const struct req_msg_field RMF_MDT_MD =
809 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL);
810 EXPORT_SYMBOL(RMF_MDT_MD);
812 const struct req_msg_field RMF_REC_REINT =
813 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
814 lustre_swab_mdt_rec_reint);
815 EXPORT_SYMBOL(RMF_REC_REINT);
817 const struct req_msg_field RMF_REC_JOINFILE =
818 DEFINE_MSGF("rec_joinfile", 0, sizeof(struct mdt_rec_join),
819 lustre_swab_mdt_rec_join);
820 EXPORT_SYMBOL(RMF_REC_JOINFILE);
822 /* FIXME: this length should be defined as a macro */
823 const struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1, NULL);
824 EXPORT_SYMBOL(RMF_EADATA);
826 const struct req_msg_field RMF_ACL =
827 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
828 LUSTRE_POSIX_ACL_MAX_SIZE, NULL);
829 EXPORT_SYMBOL(RMF_ACL);
831 const struct req_msg_field RMF_LOGCOOKIES =
832 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
833 sizeof(struct llog_cookie), NULL);
834 EXPORT_SYMBOL(RMF_LOGCOOKIES);
836 const struct req_msg_field RMF_CAPA1 =
837 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
838 lustre_swab_lustre_capa);
839 EXPORT_SYMBOL(RMF_CAPA1);
841 const struct req_msg_field RMF_CAPA2 =
842 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
843 lustre_swab_lustre_capa);
844 EXPORT_SYMBOL(RMF_CAPA2);
849 const struct req_msg_field RMF_OST_BODY =
850 DEFINE_MSGF("ost_body", 0,
851 sizeof(struct ost_body), lustre_swab_ost_body);
852 EXPORT_SYMBOL(RMF_OST_BODY);
854 const struct req_msg_field RMF_OBD_IOOBJ =
855 DEFINE_MSGF("obd_ioobj", 0,
856 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj);
857 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
859 const struct req_msg_field RMF_NIOBUF_REMOTE =
860 DEFINE_MSGF("niobuf_remote", 0, -1, lustre_swab_niobuf_remote);
861 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
863 const struct req_msg_field RMF_OBD_ID =
864 DEFINE_MSGF("obd_id", 0,
865 sizeof(obd_id), lustre_swab_ost_last_id);
866 EXPORT_SYMBOL(RMF_OBD_ID);
868 const struct req_msg_field RMF_FIEMAP_KEY =
869 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
871 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
873 const struct req_msg_field RMF_FIEMAP_VAL =
874 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap);
875 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
886 const struct req_msg_field **d;
890 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
904 #define DEFINE_REQ_FMT0(name, client, server) \
905 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
907 const struct req_format RQF_OBD_PING =
908 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
909 EXPORT_SYMBOL(RQF_OBD_PING);
911 const struct req_format RQF_SEC_CTX =
912 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
913 EXPORT_SYMBOL(RQF_SEC_CTX);
915 const struct req_format RQF_MGS_TARGET_REG =
916 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
917 mgs_target_info_only);
918 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
920 const struct req_format RQF_MGS_SET_INFO =
921 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
923 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
925 const struct req_format RQF_SEQ_QUERY =
926 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
927 EXPORT_SYMBOL(RQF_SEQ_QUERY);
929 const struct req_format RQF_FLD_QUERY =
930 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
931 EXPORT_SYMBOL(RQF_FLD_QUERY);
933 const struct req_format RQF_LOG_CANCEL =
934 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
935 EXPORT_SYMBOL(RQF_LOG_CANCEL);
937 const struct req_format RQF_MDS_QUOTACHECK =
938 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
939 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
941 const struct req_format RQF_OST_QUOTACHECK =
942 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
943 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
945 const struct req_format RQF_MDS_QUOTACTL =
946 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
947 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
949 const struct req_format RQF_OST_QUOTACTL =
950 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
951 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
953 const struct req_format RQF_OST_QUOTA_ADJUST_QUNIT =
954 DEFINE_REQ_FMT0("OST_QUOTA_ADJUST_QUNIT", quota_adjust_qunit_only,
955 quota_adjust_qunit_only);
956 EXPORT_SYMBOL(RQF_OST_QUOTA_ADJUST_QUNIT);
958 const struct req_format RQF_QC_CALLBACK =
959 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
960 EXPORT_SYMBOL(RQF_QC_CALLBACK);
962 const struct req_format RQF_MDS_QUOTA_DQACQ =
963 DEFINE_REQ_FMT0("MDS_QUOTA_DQACQ", qunit_data_only, qunit_data_only);
964 EXPORT_SYMBOL(RQF_MDS_QUOTA_DQACQ);
966 const struct req_format RQF_MDS_GETSTATUS =
967 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
968 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
970 const struct req_format RQF_MDS_STATFS =
971 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
972 EXPORT_SYMBOL(RQF_MDS_STATFS);
974 const struct req_format RQF_MDS_SYNC =
975 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
976 EXPORT_SYMBOL(RQF_MDS_SYNC);
978 const struct req_format RQF_MDS_GETATTR =
979 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
980 EXPORT_SYMBOL(RQF_MDS_GETATTR);
982 const struct req_format RQF_MDS_GETXATTR =
983 DEFINE_REQ_FMT0("MDS_GETXATTR",
984 mds_getxattr_client, mds_getxattr_server);
985 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
987 const struct req_format RQF_MDS_GETATTR_NAME =
988 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
989 mds_getattr_name_client, mds_getattr_server);
990 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
992 const struct req_format RQF_MDS_REINT =
993 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
994 EXPORT_SYMBOL(RQF_MDS_REINT);
996 const struct req_format RQF_MDS_REINT_CREATE =
997 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
998 mds_reint_create_client, mdt_body_capa);
999 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
1001 const struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
1002 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1003 mds_reint_create_rmt_acl_client, mdt_body_capa);
1004 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1006 const struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1007 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1008 mds_reint_create_slave_client, mdt_body_capa);
1009 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1011 const struct req_format RQF_MDS_REINT_CREATE_SYM =
1012 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1013 mds_reint_create_sym_client, mdt_body_capa);
1014 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1016 const struct req_format RQF_MDS_REINT_OPEN =
1017 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1018 mds_reint_open_client, mds_reint_open_server);
1019 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1021 const struct req_format RQF_MDS_REINT_UNLINK =
1022 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1023 mds_last_unlink_server);
1024 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1026 const struct req_format RQF_MDS_REINT_LINK =
1027 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1028 mds_reint_link_client, mdt_body_only);
1029 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1031 const struct req_format RQF_MDS_REINT_RENAME =
1032 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1033 mds_last_unlink_server);
1034 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1036 const struct req_format RQF_MDS_REINT_SETATTR =
1037 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1038 mds_reint_setattr_client, mds_setattr_server);
1039 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1041 const struct req_format RQF_MDS_REINT_SETXATTR =
1042 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1043 mds_reint_setxattr_client, mdt_body_only);
1044 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1046 const struct req_format RQF_MDS_CONNECT =
1047 DEFINE_REQ_FMT0("MDS_CONNECT",
1048 obd_connect_client, obd_connect_server);
1049 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1051 const struct req_format RQF_MDS_DISCONNECT =
1052 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1053 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1055 const struct req_format RQF_MDS_SET_INFO =
1056 DEFINE_REQ_FMT0("MDS_SET_INFO", mds_set_info_client, empty);
1057 EXPORT_SYMBOL(RQF_MDS_SET_INFO);
1059 const struct req_format RQF_MDS_GET_INFO =
1060 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1061 mds_getinfo_server);
1062 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1064 const struct req_format RQF_LDLM_ENQUEUE =
1065 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1066 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1067 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1069 const struct req_format RQF_LDLM_ENQUEUE_LVB =
1070 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1071 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1072 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1074 const struct req_format RQF_LDLM_CONVERT =
1075 DEFINE_REQ_FMT0("LDLM_CONVERT",
1076 ldlm_enqueue_client, ldlm_enqueue_server);
1077 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1079 const struct req_format RQF_LDLM_CANCEL =
1080 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1081 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1083 const struct req_format RQF_LDLM_CALLBACK =
1084 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1085 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1087 const struct req_format RQF_LDLM_CP_CALLBACK =
1088 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1089 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1091 const struct req_format RQF_LDLM_BL_CALLBACK =
1092 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1093 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1095 const struct req_format RQF_LDLM_GL_CALLBACK =
1096 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1097 ldlm_gl_callback_server);
1098 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1100 const struct req_format RQF_LDLM_INTENT =
1101 DEFINE_REQ_FMT0("LDLM_INTENT",
1102 ldlm_intent_client, ldlm_intent_server);
1103 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1105 const struct req_format RQF_LDLM_INTENT_GETATTR =
1106 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1107 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1108 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1110 const struct req_format RQF_LDLM_INTENT_OPEN =
1111 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1112 ldlm_intent_open_client, ldlm_intent_open_server);
1113 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1115 const struct req_format RQF_LDLM_INTENT_CREATE =
1116 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1117 ldlm_intent_create_client, ldlm_intent_getattr_server);
1118 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1120 const struct req_format RQF_LDLM_INTENT_UNLINK =
1121 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1122 ldlm_intent_unlink_client, ldlm_intent_server);
1123 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1125 const struct req_format RQF_MDS_CLOSE =
1126 DEFINE_REQ_FMT0("MDS_CLOSE",
1127 mdt_close_client, mds_last_unlink_server);
1128 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1130 const struct req_format RQF_MDS_PIN =
1131 DEFINE_REQ_FMT0("MDS_PIN",
1132 mdt_body_capa, mdt_body_only);
1133 EXPORT_SYMBOL(RQF_MDS_PIN);
1135 const struct req_format RQF_MDS_UNPIN =
1136 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1137 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1139 const struct req_format RQF_MDS_DONE_WRITING =
1140 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1141 mdt_close_client, mdt_body_only);
1142 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1144 const struct req_format RQF_MDS_READPAGE =
1145 DEFINE_REQ_FMT0("MDS_READPAGE",
1146 mdt_body_capa, mdt_body_only);
1147 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1149 /* This is for split */
1150 const struct req_format RQF_MDS_WRITEPAGE =
1151 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1152 mdt_body_capa, mdt_body_only);
1153 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1155 const struct req_format RQF_MDS_IS_SUBDIR =
1156 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1157 mdt_body_only, mdt_body_only);
1158 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1160 const struct req_format RQF_LLOG_CATINFO =
1161 DEFINE_REQ_FMT0("LLOG_CATINFO",
1162 llog_catinfo_client, llog_catinfo_server);
1163 EXPORT_SYMBOL(RQF_LLOG_CATINFO);
1165 const struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1166 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1167 llog_origin_handle_create_client, llogd_body_only);
1168 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1170 const struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1171 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1172 llogd_body_only, llogd_body_only);
1173 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1175 const struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1176 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1177 llogd_body_only, llog_origin_handle_next_block_server);
1178 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1180 const struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1181 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1182 llogd_body_only, llog_origin_handle_next_block_server);
1183 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1185 const struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1186 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1187 llogd_body_only, llog_log_hdr_only);
1188 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1190 const struct req_format RQF_LLOG_ORIGIN_CONNECT =
1191 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1192 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1194 const struct req_format RQF_OST_CONNECT =
1195 DEFINE_REQ_FMT0("OST_CONNECT",
1196 obd_connect_client, obd_connect_server);
1197 EXPORT_SYMBOL(RQF_OST_CONNECT);
1199 const struct req_format RQF_OST_DISCONNECT =
1200 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1201 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1203 const struct req_format RQF_OST_GETATTR =
1204 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1205 EXPORT_SYMBOL(RQF_OST_GETATTR);
1207 const struct req_format RQF_OST_SETATTR =
1208 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1209 EXPORT_SYMBOL(RQF_OST_SETATTR);
1211 const struct req_format RQF_OST_CREATE =
1212 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1213 EXPORT_SYMBOL(RQF_OST_CREATE);
1215 const struct req_format RQF_OST_PUNCH =
1216 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1217 EXPORT_SYMBOL(RQF_OST_PUNCH);
1219 const struct req_format RQF_OST_SYNC =
1220 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1221 EXPORT_SYMBOL(RQF_OST_SYNC);
1223 const struct req_format RQF_OST_DESTROY =
1224 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1225 EXPORT_SYMBOL(RQF_OST_DESTROY);
1227 const struct req_format RQF_OST_BRW =
1228 DEFINE_REQ_FMT0("OST_BRW", ost_brw_client, ost_brw_server);
1229 EXPORT_SYMBOL(RQF_OST_BRW);
1231 const struct req_format RQF_OST_STATFS =
1232 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1233 EXPORT_SYMBOL(RQF_OST_STATFS);
1235 const struct req_format RQF_OST_SET_INFO =
1236 DEFINE_REQ_FMT0("OST_SET_INFO", ost_set_info_client, empty);
1237 EXPORT_SYMBOL(RQF_OST_SET_INFO);
1239 const struct req_format RQF_OST_SET_GRANT_INFO =
1240 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_set_info_client,
1242 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1244 const struct req_format RQF_OST_GET_INFO_GENERIC =
1245 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1246 ost_get_info_generic_server);
1247 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1249 const struct req_format RQF_OST_GET_INFO_LAST_ID =
1250 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1251 ost_get_last_id_server);
1252 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1254 const struct req_format RQF_OST_GET_INFO_FIEMAP =
1255 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1256 ost_get_fiemap_server);
1257 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1260 #if !defined(__REQ_LAYOUT_USER__)
1262 int req_layout_init(void)
1268 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1269 struct req_format *rf;
1271 rf = (struct req_format *)req_formats[i];
1273 for (j = 0; j < RCL_NR; ++j) {
1274 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1275 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1276 struct req_msg_field *field;
1278 field = (typeof(field))rf->rf_fields[j].d[k];
1279 LASSERT(field->rmf_offset[i][j] == 0);
1281 * k + 1 to detect unused format/field
1284 field->rmf_offset[i][j] = k + 1;
1290 EXPORT_SYMBOL(req_layout_init);
1292 void req_layout_fini(void)
1295 EXPORT_SYMBOL(req_layout_fini);
1297 void req_capsule_init_area(struct req_capsule *pill)
1301 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1302 pill->rc_area[RCL_CLIENT][i] = -1;
1303 pill->rc_area[RCL_SERVER][i] = -1;
1306 EXPORT_SYMBOL(req_capsule_init_area);
1309 * Initialize capsule.
1311 * @area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1312 * variable-sized fields.
1314 void req_capsule_init(struct req_capsule *pill,
1315 struct ptlrpc_request *req,
1316 enum req_location location)
1318 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1320 memset(pill, 0, sizeof *pill);
1322 pill->rc_loc = location;
1323 req_capsule_init_area(pill);
1325 EXPORT_SYMBOL(req_capsule_init);
1327 void req_capsule_fini(struct req_capsule *pill)
1330 EXPORT_SYMBOL(req_capsule_fini);
1332 static int __req_format_is_sane(const struct req_format *fmt)
1335 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1336 req_formats[fmt->rf_idx] == fmt;
1339 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1340 enum req_location loc)
1342 struct ptlrpc_request *req;
1345 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1348 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1350 LASSERT(pill->rc_fmt == NULL);
1351 LASSERT(__req_format_is_sane(fmt));
1355 EXPORT_SYMBOL(req_capsule_set);
1357 int req_capsule_filled_sizes(struct req_capsule *pill,
1358 enum req_location loc)
1360 const struct req_format *fmt = pill->rc_fmt;
1363 LASSERT(fmt != NULL);
1365 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1366 if (pill->rc_area[loc][i] == -1) {
1367 pill->rc_area[loc][i] =
1368 fmt->rf_fields[loc].d[i]->rmf_size;
1369 if (pill->rc_area[loc][i] == -1) {
1370 /* skip the following fields */
1371 LASSERT(loc != RCL_SERVER);
1378 EXPORT_SYMBOL(req_capsule_filled_sizes);
1380 int req_capsule_server_pack(struct req_capsule *pill)
1382 const struct req_format *fmt;
1386 LASSERT(pill->rc_loc == RCL_SERVER);
1388 LASSERT(fmt != NULL);
1390 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1391 rc = lustre_pack_reply(pill->rc_req, count,
1392 pill->rc_area[RCL_SERVER], NULL);
1394 DEBUG_REQ(D_ERROR, pill->rc_req,
1395 "Cannot pack %d fields in format `%s': ",
1396 count, fmt->rf_name);
1400 EXPORT_SYMBOL(req_capsule_server_pack);
1402 static int __req_capsule_offset(const struct req_capsule *pill,
1403 const struct req_msg_field *field,
1404 enum req_location loc)
1408 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1409 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1410 pill->rc_fmt->rf_name,
1411 field->rmf_name, offset, loc);
1413 LASSERT(0 <= offset && offset < (sizeof(pill->rc_swabbed) << 3));
1417 static void *__req_capsule_get(struct req_capsule *pill,
1418 const struct req_msg_field *field,
1419 enum req_location loc,
1420 void (*swabber)( void *))
1422 const struct req_format *fmt;
1423 struct lustre_msg *msg;
1428 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1430 static const char *rcl_names[RCL_NR] = {
1431 [RCL_CLIENT] = "client",
1432 [RCL_SERVER] = "server"
1435 LASSERT(pill != NULL);
1436 LASSERT(pill != LP_POISON);
1438 LASSERT(fmt != NULL);
1439 LASSERT(fmt != LP_POISON);
1440 LASSERT(__req_format_is_sane(fmt));
1442 offset = __req_capsule_offset(pill, field, loc);
1444 msg = __req_msg(pill, loc);
1445 LASSERT(msg != NULL);
1447 getter = (field->rmf_flags & RMF_F_STRING) ?
1448 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1450 if (pill->rc_area[loc][offset] != -1)
1451 len = pill->rc_area[loc][offset];
1453 len = max(field->rmf_size, 0);
1454 value = getter(msg, offset, len);
1456 swabber = swabber ?: field->rmf_swabber;
1457 if (!(pill->rc_swabbed & (1 << offset)) && loc != pill->rc_loc &&
1458 swabber != NULL && value != NULL &&
1459 lustre_msg_swabbed(msg)) {
1461 pill->rc_swabbed |= (1 << offset);
1463 if (value == NULL) {
1464 DEBUG_REQ(D_ERROR, pill->rc_req,
1465 "Wrong buffer for field `%s' (%d of %d) "
1466 "in format `%s': %d vs. %d (%s)\n",
1467 field->rmf_name, offset, lustre_msg_bufcount(msg), fmt->rf_name,
1468 lustre_msg_buflen(msg, offset), len,
1475 void *req_capsule_client_get(struct req_capsule *pill,
1476 const struct req_msg_field *field)
1478 return __req_capsule_get(pill, field, RCL_CLIENT, NULL);
1480 EXPORT_SYMBOL(req_capsule_client_get);
1482 void *req_capsule_client_swab_get(struct req_capsule *pill,
1483 const struct req_msg_field *field,
1484 void (*swabber)(void* ))
1486 return __req_capsule_get(pill, field, RCL_CLIENT, swabber);
1488 EXPORT_SYMBOL(req_capsule_client_swab_get);
1490 void *req_capsule_client_sized_get(struct req_capsule *pill,
1491 const struct req_msg_field *field,
1494 req_capsule_set_size(pill, field, RCL_CLIENT, len);
1495 return __req_capsule_get(pill, field, RCL_CLIENT, NULL);
1497 EXPORT_SYMBOL(req_capsule_client_sized_get);
1499 void *req_capsule_server_get(struct req_capsule *pill,
1500 const struct req_msg_field *field)
1502 return __req_capsule_get(pill, field, RCL_SERVER, NULL);
1504 EXPORT_SYMBOL(req_capsule_server_get);
1506 void *req_capsule_server_swab_get(struct req_capsule *pill,
1507 const struct req_msg_field *field,
1510 return __req_capsule_get(pill, field, RCL_SERVER, swabber);
1512 EXPORT_SYMBOL(req_capsule_server_swab_get);
1515 void *req_capsule_server_sized_get(struct req_capsule *pill,
1516 const struct req_msg_field *field,
1519 req_capsule_set_size(pill, field, RCL_SERVER, len);
1520 return __req_capsule_get(pill, field, RCL_SERVER, NULL);
1522 EXPORT_SYMBOL(req_capsule_server_sized_get);
1524 const void *req_capsule_other_get(struct req_capsule *pill,
1525 const struct req_msg_field *field)
1527 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL);
1529 EXPORT_SYMBOL(req_capsule_other_get);
1531 void req_capsule_set_size(struct req_capsule *pill,
1532 const struct req_msg_field *field,
1533 enum req_location loc, int size)
1535 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1537 if ((size != field->rmf_size) &&
1538 (field->rmf_size != -1) &&
1539 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
1541 CERROR("%s: field size mismatch %d != %d (%d)\n",
1542 field->rmf_name, size, field->rmf_size, loc);
1546 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
1548 EXPORT_SYMBOL(req_capsule_set_size);
1550 /* NB: this function doesn't correspond with req_capsule_set_size(), which
1551 * actually sets the size in pill.rc_area[loc][offset], but this function
1552 * returns the message buflen[offset], maybe we should use another name.
1554 int req_capsule_get_size(const struct req_capsule *pill,
1555 const struct req_msg_field *field,
1556 enum req_location loc)
1558 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1560 return lustre_msg_buflen(__req_msg(pill, loc),
1561 __req_capsule_offset(pill, field, loc));
1563 EXPORT_SYMBOL(req_capsule_get_size);
1565 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
1567 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
1568 pill->rc_fmt->rf_fields[loc].nr,
1569 pill->rc_area[loc]);
1572 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
1573 enum req_location loc)
1577 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
1581 for (; i < fmt->rf_fields[loc].nr; ++i)
1582 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
1583 size += size_round(fmt->rf_fields[loc].d[i]->rmf_size);
1587 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1589 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
1594 const struct req_format *old;
1596 LASSERT(pill->rc_fmt != NULL);
1597 LASSERT(__req_format_is_sane(fmt));
1601 * Sanity checking...
1603 for (i = 0; i < RCL_NR; ++i) {
1604 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
1605 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
1606 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
1609 * Last field in old format can be shorter than in new.
1611 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
1612 FMT_FIELD(old, i, j)->rmf_size);
1614 /* last field should be returned to the unswabbed state */
1615 pill->rc_swabbed &= ~(__u32)(1 << j);
1618 EXPORT_SYMBOL(req_capsule_extend);
1620 int req_capsule_has_field(const struct req_capsule *pill,
1621 const struct req_msg_field *field,
1622 enum req_location loc)
1624 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1626 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1628 EXPORT_SYMBOL(req_capsule_has_field);
1630 int req_capsule_field_present(const struct req_capsule *pill,
1631 const struct req_msg_field *field,
1632 enum req_location loc)
1636 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1637 LASSERT(req_capsule_has_field(pill, field, loc));
1639 offset = __req_capsule_offset(pill, field, loc);
1640 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
1642 EXPORT_SYMBOL(req_capsule_field_present);
1644 void req_capsule_shrink(struct req_capsule *pill,
1645 const struct req_msg_field *field,
1646 unsigned int newlen,
1647 enum req_location loc)
1649 const struct req_format *fmt;
1650 struct lustre_msg *msg;
1655 LASSERT(fmt != NULL);
1656 LASSERT(__req_format_is_sane(fmt));
1657 LASSERT(req_capsule_has_field(pill, field, loc));
1658 LASSERT(req_capsule_field_present(pill, field, loc));
1660 offset = __req_capsule_offset(pill, field, loc);
1662 msg = __req_msg(pill, loc);
1663 len = lustre_msg_buflen(msg, offset);
1664 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
1665 fmt->rf_name, field->rmf_name, len, newlen);
1667 if (loc == RCL_CLIENT)
1668 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
1671 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
1674 EXPORT_SYMBOL(req_capsule_shrink);
1676 /* __REQ_LAYOUT_USER__ */