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 *ldlm_enqueue_client[] = {
294 static const struct req_msg_field *ldlm_enqueue_server[] = {
299 static const struct req_msg_field *ldlm_enqueue_lvb_server[] = {
305 static const struct req_msg_field *ldlm_cp_callback_client[] = {
311 static const struct req_msg_field *ldlm_gl_callback_server[] = {
316 static const struct req_msg_field *ldlm_intent_client[] = {
323 static const struct req_msg_field *ldlm_intent_server[] = {
331 static const struct req_msg_field *ldlm_intent_open_server[] = {
341 static const struct req_msg_field *ldlm_intent_getattr_client[] = {
345 &RMF_MDT_BODY, /* coincides with mds_getattr_name_client[] */
350 static const struct req_msg_field *ldlm_intent_getattr_server[] = {
359 static const struct req_msg_field *ldlm_intent_create_client[] = {
363 &RMF_REC_REINT, /* coincides with mds_reint_create_client[] */
369 static const struct req_msg_field *ldlm_intent_open_client[] = {
373 &RMF_REC_REINT, /* coincides with mds_reint_open_client[] */
381 static const struct req_msg_field *ldlm_intent_unlink_client[] = {
385 &RMF_REC_REINT, /* coincides with mds_reint_unlink_client[] */
390 static const struct req_msg_field *mds_getxattr_client[] = {
398 static const struct req_msg_field *mds_getxattr_server[] = {
404 static const struct req_msg_field *mds_getattr_server[] = {
413 static const struct req_msg_field *mds_setattr_server[] = {
422 static const struct req_msg_field *llog_catinfo_client[] = {
428 static const struct req_msg_field *llog_catinfo_server[] = {
433 static const struct req_msg_field *llog_origin_handle_create_client[] = {
439 static const struct req_msg_field *llogd_body_only[] = {
444 static const struct req_msg_field *llog_log_hdr_only[] = {
449 static const struct req_msg_field *llogd_conn_body_only[] = {
454 static const struct req_msg_field *llog_origin_handle_next_block_server[] = {
460 static const struct req_msg_field *ost_body_only[] = {
465 static const struct req_msg_field *ost_body_capa[] = {
471 static const struct req_msg_field *ost_destroy_client[] = {
479 static const struct req_msg_field *ost_brw_client[] = {
487 static const struct req_msg_field *ost_brw_server[] = {
493 static const struct req_msg_field *ost_set_info_client[] = {
499 static const struct req_msg_field *ost_get_info_generic_server[] = {
504 static const struct req_msg_field *ost_get_info_generic_client[] = {
509 static const struct req_msg_field *ost_get_last_id_server[] = {
514 static const struct req_msg_field *ost_get_fiemap_client[] = {
520 static const struct req_msg_field *ost_get_fiemap_server[] = {
525 static const struct req_format *req_formats[] = {
538 &RQF_MDS_GETATTR_NAME,
547 &RQF_MDS_DONE_WRITING,
549 &RQF_MDS_REINT_CREATE,
550 &RQF_MDS_REINT_CREATE_RMT_ACL,
551 &RQF_MDS_REINT_CREATE_SLAVE,
552 &RQF_MDS_REINT_CREATE_SYM,
554 &RQF_MDS_REINT_UNLINK,
556 &RQF_MDS_REINT_RENAME,
557 &RQF_MDS_REINT_SETATTR,
558 &RQF_MDS_REINT_SETXATTR,
561 &RQF_MDS_QUOTA_DQACQ,
567 &RQF_OST_QUOTA_ADJUST_QUNIT,
577 &RQF_OST_SET_GRANT_INFO,
578 &RQF_OST_GET_INFO_GENERIC,
579 &RQF_OST_GET_INFO_LAST_ID,
580 &RQF_OST_GET_INFO_FIEMAP,
582 &RQF_LDLM_ENQUEUE_LVB,
586 &RQF_LDLM_CP_CALLBACK,
587 &RQF_LDLM_BL_CALLBACK,
588 &RQF_LDLM_GL_CALLBACK,
590 &RQF_LDLM_INTENT_GETATTR,
591 &RQF_LDLM_INTENT_OPEN,
592 &RQF_LDLM_INTENT_CREATE,
593 &RQF_LDLM_INTENT_UNLINK,
596 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
597 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
598 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
599 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
600 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
601 &RQF_LLOG_ORIGIN_CONNECT
604 struct req_msg_field {
606 const char *rmf_name;
608 * Field length. (-1) means "variable length".
611 void (*rmf_swabber)(void *);
612 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
616 RMF_F_STRING = 1 << 0
624 #define DEFINE_MSGF(name, flags, size, swabber) { \
625 .rmf_name = (name), \
626 .rmf_flags = (flags), \
627 .rmf_size = (size), \
628 .rmf_swabber = (void (*)(void*))(swabber) \
631 const struct req_msg_field RMF_GENERIC_DATA =
632 DEFINE_MSGF("generic_data", 0,
634 EXPORT_SYMBOL(RMF_GENERIC_DATA);
636 const struct req_msg_field RMF_MGS_TARGET_INFO =
637 DEFINE_MSGF("mgs_target_info", 0,
638 sizeof(struct mgs_target_info),
639 lustre_swab_mgs_target_info);
640 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
642 const struct req_msg_field RMF_MGS_SEND_PARAM =
643 DEFINE_MSGF("mgs_send_param", 0,
644 sizeof(struct mgs_send_param),
646 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
648 const struct req_msg_field RMF_SETINFO_VAL =
649 DEFINE_MSGF("setinfo_val", 0,
650 sizeof(__u32), lustre_swab_generic_32s);
651 EXPORT_SYMBOL(RMF_SETINFO_VAL);
653 const struct req_msg_field RMF_SEQ_OPC =
654 DEFINE_MSGF("seq_query_opc", 0,
655 sizeof(__u32), lustre_swab_generic_32s);
656 EXPORT_SYMBOL(RMF_SEQ_OPC);
658 const struct req_msg_field RMF_SEQ_RANGE =
659 DEFINE_MSGF("seq_query_range", 0,
660 sizeof(struct lu_seq_range), lustre_swab_lu_seq_range);
661 EXPORT_SYMBOL(RMF_SEQ_RANGE);
663 const struct req_msg_field RMF_FLD_OPC =
664 DEFINE_MSGF("fld_query_opc", 0,
665 sizeof(__u32), lustre_swab_generic_32s);
666 EXPORT_SYMBOL(RMF_FLD_OPC);
668 const struct req_msg_field RMF_FLD_MDFLD =
669 DEFINE_MSGF("fld_query_mdfld", 0,
670 sizeof(struct lu_seq_range), lustre_swab_lu_seq_range);
671 EXPORT_SYMBOL(RMF_FLD_MDFLD);
673 const struct req_msg_field RMF_MDT_BODY =
674 DEFINE_MSGF("mdt_body", 0,
675 sizeof(struct mdt_body), lustre_swab_mdt_body);
676 EXPORT_SYMBOL(RMF_MDT_BODY);
678 const struct req_msg_field RMF_OBD_QUOTACTL =
679 DEFINE_MSGF("obd_quotactl", 0,
680 sizeof(struct obd_quotactl), lustre_swab_obd_quotactl);
681 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
683 const struct req_msg_field RMF_QUOTA_ADJUST_QUNIT =
684 DEFINE_MSGF("quota_adjust_qunit", 0,
685 sizeof(struct quota_adjust_qunit),
686 lustre_swab_quota_adjust_qunit);
687 EXPORT_SYMBOL(RMF_QUOTA_ADJUST_QUNIT);
689 const struct req_msg_field RMF_QUNIT_DATA =
690 DEFINE_MSGF("qunit_data", 0,
691 sizeof(struct qunit_data), NULL);
692 EXPORT_SYMBOL(RMF_QUNIT_DATA);
694 const struct req_msg_field RMF_MDT_EPOCH =
695 DEFINE_MSGF("mdt_epoch", 0,
696 sizeof(struct mdt_epoch), lustre_swab_mdt_epoch);
697 EXPORT_SYMBOL(RMF_MDT_EPOCH);
699 const struct req_msg_field RMF_PTLRPC_BODY =
700 DEFINE_MSGF("ptlrpc_body", 0,
701 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body);
702 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
704 const struct req_msg_field RMF_OBD_STATFS =
705 DEFINE_MSGF("obd_statfs", 0,
706 sizeof(struct obd_statfs), lustre_swab_obd_statfs);
707 EXPORT_SYMBOL(RMF_OBD_STATFS);
709 const struct req_msg_field RMF_SETINFO_KEY =
710 DEFINE_MSGF("setinfo_key", 0, -1, NULL);
711 EXPORT_SYMBOL(RMF_SETINFO_KEY);
713 const struct req_msg_field RMF_NAME =
714 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL);
715 EXPORT_SYMBOL(RMF_NAME);
717 const struct req_msg_field RMF_SYMTGT =
718 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL);
719 EXPORT_SYMBOL(RMF_SYMTGT);
721 const struct req_msg_field RMF_TGTUUID =
722 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL);
723 EXPORT_SYMBOL(RMF_TGTUUID);
725 const struct req_msg_field RMF_CLUUID =
726 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL);
727 EXPORT_SYMBOL(RMF_CLUUID);
729 const struct req_msg_field RMF_STRING =
730 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL);
731 EXPORT_SYMBOL(RMF_STRING);
733 const struct req_msg_field RMF_LLOGD_BODY =
734 DEFINE_MSGF("llogd_body", 0,
735 sizeof(struct llogd_body), lustre_swab_llogd_body);
736 EXPORT_SYMBOL(RMF_LLOGD_BODY);
738 const struct req_msg_field RMF_LLOG_LOG_HDR =
739 DEFINE_MSGF("llog_log_hdr", 0,
740 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr);
741 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
743 const struct req_msg_field RMF_LLOGD_CONN_BODY =
744 DEFINE_MSGF("llogd_conn_body", 0,
745 sizeof(struct llogd_conn_body),
746 lustre_swab_llogd_conn_body);
747 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
750 * connection handle received in MDS_CONNECT request.
754 const struct req_msg_field RMF_CONN =
755 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL);
756 EXPORT_SYMBOL(RMF_CONN);
758 const struct req_msg_field RMF_CONNECT_DATA =
759 DEFINE_MSGF("cdata", 0,
760 sizeof(struct obd_connect_data), lustre_swab_connect);
761 EXPORT_SYMBOL(RMF_CONNECT_DATA);
763 const struct req_msg_field RMF_DLM_REQ =
764 DEFINE_MSGF("dlm_req", 0,
765 sizeof(struct ldlm_request), lustre_swab_ldlm_request);
766 EXPORT_SYMBOL(RMF_DLM_REQ);
768 const struct req_msg_field RMF_DLM_REP =
769 DEFINE_MSGF("dlm_rep", 0,
770 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply);
771 EXPORT_SYMBOL(RMF_DLM_REP);
773 const struct req_msg_field RMF_LDLM_INTENT =
774 DEFINE_MSGF("ldlm_intent", 0,
775 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent);
776 EXPORT_SYMBOL(RMF_LDLM_INTENT);
778 const struct req_msg_field RMF_DLM_LVB =
779 DEFINE_MSGF("dlm_lvb", 0, sizeof(struct ost_lvb), NULL);
780 EXPORT_SYMBOL(RMF_DLM_LVB);
782 const struct req_msg_field RMF_MDT_MD =
783 DEFINE_MSGF("mdt_md", 0, MIN_MD_SIZE, NULL);
784 EXPORT_SYMBOL(RMF_MDT_MD);
786 const struct req_msg_field RMF_REC_REINT =
787 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
788 lustre_swab_mdt_rec_reint);
789 EXPORT_SYMBOL(RMF_REC_REINT);
791 const struct req_msg_field RMF_REC_JOINFILE =
792 DEFINE_MSGF("rec_joinfile", 0, sizeof(struct mdt_rec_join),
793 lustre_swab_mdt_rec_join);
794 EXPORT_SYMBOL(RMF_REC_JOINFILE);
796 /* FIXME: this length should be defined as a macro */
797 const struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1, NULL);
798 EXPORT_SYMBOL(RMF_EADATA);
800 const struct req_msg_field RMF_ACL =
801 DEFINE_MSGF("acl", 0, LUSTRE_POSIX_ACL_MAX_SIZE, NULL);
802 EXPORT_SYMBOL(RMF_ACL);
804 const struct req_msg_field RMF_LOGCOOKIES =
805 DEFINE_MSGF("logcookies", 0, sizeof(struct llog_cookie), NULL);
806 EXPORT_SYMBOL(RMF_LOGCOOKIES);
808 const struct req_msg_field RMF_CAPA1 =
809 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
810 lustre_swab_lustre_capa);
811 EXPORT_SYMBOL(RMF_CAPA1);
813 const struct req_msg_field RMF_CAPA2 =
814 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
815 lustre_swab_lustre_capa);
816 EXPORT_SYMBOL(RMF_CAPA2);
821 const struct req_msg_field RMF_OST_BODY =
822 DEFINE_MSGF("ost_body", 0,
823 sizeof(struct ost_body), lustre_swab_ost_body);
824 EXPORT_SYMBOL(RMF_OST_BODY);
826 const struct req_msg_field RMF_OBD_IOOBJ =
827 DEFINE_MSGF("obd_ioobj", 0,
828 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj);
829 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
831 const struct req_msg_field RMF_NIOBUF_REMOTE =
832 DEFINE_MSGF("niobuf_remote", 0, -1, lustre_swab_niobuf_remote);
833 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
835 const struct req_msg_field RMF_OBD_ID =
836 DEFINE_MSGF("obd_id", 0,
837 sizeof(obd_id), lustre_swab_ost_last_id);
838 EXPORT_SYMBOL(RMF_OBD_ID);
840 const struct req_msg_field RMF_FIEMAP_KEY =
841 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
843 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
845 const struct req_msg_field RMF_FIEMAP_VAL =
846 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap);
847 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
858 const struct req_msg_field **d;
862 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
876 #define DEFINE_REQ_FMT0(name, client, server) \
877 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
879 const struct req_format RQF_OBD_PING =
880 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
881 EXPORT_SYMBOL(RQF_OBD_PING);
883 const struct req_format RQF_SEC_CTX =
884 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
885 EXPORT_SYMBOL(RQF_SEC_CTX);
887 const struct req_format RQF_MGS_TARGET_REG =
888 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
889 mgs_target_info_only);
890 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
892 const struct req_format RQF_MGS_SET_INFO =
893 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
895 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
897 const struct req_format RQF_SEQ_QUERY =
898 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
899 EXPORT_SYMBOL(RQF_SEQ_QUERY);
901 const struct req_format RQF_FLD_QUERY =
902 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
903 EXPORT_SYMBOL(RQF_FLD_QUERY);
905 const struct req_format RQF_LOG_CANCEL =
906 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
907 EXPORT_SYMBOL(RQF_LOG_CANCEL);
909 const struct req_format RQF_MDS_QUOTACHECK =
910 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
911 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
913 const struct req_format RQF_OST_QUOTACHECK =
914 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
915 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
917 const struct req_format RQF_MDS_QUOTACTL =
918 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
919 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
921 const struct req_format RQF_OST_QUOTACTL =
922 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
923 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
925 const struct req_format RQF_OST_QUOTA_ADJUST_QUNIT =
926 DEFINE_REQ_FMT0("OST_QUOTA_ADJUST_QUNIT", quota_adjust_qunit_only,
927 quota_adjust_qunit_only);
928 EXPORT_SYMBOL(RQF_OST_QUOTA_ADJUST_QUNIT);
930 const struct req_format RQF_QC_CALLBACK =
931 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
932 EXPORT_SYMBOL(RQF_QC_CALLBACK);
934 const struct req_format RQF_MDS_QUOTA_DQACQ =
935 DEFINE_REQ_FMT0("MDS_QUOTA_DQACQ", qunit_data_only, qunit_data_only);
936 EXPORT_SYMBOL(RQF_MDS_QUOTA_DQACQ);
938 const struct req_format RQF_MDS_GETSTATUS =
939 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
940 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
942 const struct req_format RQF_MDS_STATFS =
943 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
944 EXPORT_SYMBOL(RQF_MDS_STATFS);
946 const struct req_format RQF_MDS_SYNC =
947 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
948 EXPORT_SYMBOL(RQF_MDS_SYNC);
950 const struct req_format RQF_MDS_GETATTR =
951 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
952 EXPORT_SYMBOL(RQF_MDS_GETATTR);
954 const struct req_format RQF_MDS_GETXATTR =
955 DEFINE_REQ_FMT0("MDS_GETXATTR",
956 mds_getxattr_client, mds_getxattr_server);
957 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
959 const struct req_format RQF_MDS_GETATTR_NAME =
960 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
961 mds_getattr_name_client, mds_getattr_server);
962 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
964 const struct req_format RQF_MDS_REINT =
965 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
966 EXPORT_SYMBOL(RQF_MDS_REINT);
968 const struct req_format RQF_MDS_REINT_CREATE =
969 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
970 mds_reint_create_client, mdt_body_capa);
971 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
973 const struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
974 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
975 mds_reint_create_rmt_acl_client, mdt_body_capa);
976 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
978 const struct req_format RQF_MDS_REINT_CREATE_SLAVE =
979 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
980 mds_reint_create_slave_client, mdt_body_capa);
981 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
983 const struct req_format RQF_MDS_REINT_CREATE_SYM =
984 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
985 mds_reint_create_sym_client, mdt_body_capa);
986 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
988 const struct req_format RQF_MDS_REINT_OPEN =
989 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
990 mds_reint_open_client, mds_reint_open_server);
991 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
993 const struct req_format RQF_MDS_REINT_UNLINK =
994 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
995 mds_last_unlink_server);
996 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
998 const struct req_format RQF_MDS_REINT_LINK =
999 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1000 mds_reint_link_client, mdt_body_only);
1001 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1003 const struct req_format RQF_MDS_REINT_RENAME =
1004 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1005 mds_last_unlink_server);
1006 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1008 const struct req_format RQF_MDS_REINT_SETATTR =
1009 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1010 mds_reint_setattr_client, mds_setattr_server);
1011 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1013 const struct req_format RQF_MDS_REINT_SETXATTR =
1014 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1015 mds_reint_setxattr_client, mdt_body_only);
1016 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1018 const struct req_format RQF_MDS_CONNECT =
1019 DEFINE_REQ_FMT0("MDS_CONNECT",
1020 obd_connect_client, obd_connect_server);
1021 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1023 const struct req_format RQF_MDS_DISCONNECT =
1024 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1025 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1027 const struct req_format RQF_MDS_SET_INFO =
1028 DEFINE_REQ_FMT0("MDS_SET_INFO", mds_set_info_client, empty);
1029 EXPORT_SYMBOL(RQF_MDS_SET_INFO);
1031 const struct req_format RQF_LDLM_ENQUEUE =
1032 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1033 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1034 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1036 const struct req_format RQF_LDLM_ENQUEUE_LVB =
1037 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1038 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1039 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1041 const struct req_format RQF_LDLM_CONVERT =
1042 DEFINE_REQ_FMT0("LDLM_CONVERT",
1043 ldlm_enqueue_client, ldlm_enqueue_server);
1044 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1046 const struct req_format RQF_LDLM_CANCEL =
1047 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1048 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1050 const struct req_format RQF_LDLM_CALLBACK =
1051 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1052 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1054 const struct req_format RQF_LDLM_CP_CALLBACK =
1055 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1056 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1058 const struct req_format RQF_LDLM_BL_CALLBACK =
1059 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1060 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1062 const struct req_format RQF_LDLM_GL_CALLBACK =
1063 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1064 ldlm_gl_callback_server);
1065 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1067 const struct req_format RQF_LDLM_INTENT =
1068 DEFINE_REQ_FMT0("LDLM_INTENT",
1069 ldlm_intent_client, ldlm_intent_server);
1070 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1072 const struct req_format RQF_LDLM_INTENT_GETATTR =
1073 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1074 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1075 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1077 const struct req_format RQF_LDLM_INTENT_OPEN =
1078 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1079 ldlm_intent_open_client, ldlm_intent_open_server);
1080 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1082 const struct req_format RQF_LDLM_INTENT_CREATE =
1083 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1084 ldlm_intent_create_client, ldlm_intent_getattr_server);
1085 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1087 const struct req_format RQF_LDLM_INTENT_UNLINK =
1088 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1089 ldlm_intent_unlink_client, ldlm_intent_server);
1090 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1092 const struct req_format RQF_MDS_CLOSE =
1093 DEFINE_REQ_FMT0("MDS_CLOSE",
1094 mdt_close_client, mds_last_unlink_server);
1095 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1097 const struct req_format RQF_MDS_PIN =
1098 DEFINE_REQ_FMT0("MDS_PIN",
1099 mdt_body_capa, mdt_body_only);
1100 EXPORT_SYMBOL(RQF_MDS_PIN);
1102 const struct req_format RQF_MDS_UNPIN =
1103 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1104 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1106 const struct req_format RQF_MDS_DONE_WRITING =
1107 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1108 mdt_close_client, mdt_body_only);
1109 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1111 const struct req_format RQF_MDS_READPAGE =
1112 DEFINE_REQ_FMT0("MDS_READPAGE",
1113 mdt_body_capa, mdt_body_only);
1114 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1116 /* This is for split */
1117 const struct req_format RQF_MDS_WRITEPAGE =
1118 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1119 mdt_body_capa, mdt_body_only);
1120 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1122 const struct req_format RQF_MDS_IS_SUBDIR =
1123 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1124 mdt_body_only, mdt_body_only);
1125 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1127 const struct req_format RQF_LLOG_CATINFO =
1128 DEFINE_REQ_FMT0("LLOG_CATINFO",
1129 llog_catinfo_client, llog_catinfo_server);
1130 EXPORT_SYMBOL(RQF_LLOG_CATINFO);
1132 const struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1133 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1134 llog_origin_handle_create_client, llogd_body_only);
1135 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1137 const struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1138 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1139 llogd_body_only, llogd_body_only);
1140 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1142 const struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1143 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1144 llogd_body_only, llog_origin_handle_next_block_server);
1145 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1147 const struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1148 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1149 llogd_body_only, llog_origin_handle_next_block_server);
1150 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1152 const struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1153 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1154 llogd_body_only, llog_log_hdr_only);
1155 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1157 const struct req_format RQF_LLOG_ORIGIN_CONNECT =
1158 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1159 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1161 const struct req_format RQF_OST_CONNECT =
1162 DEFINE_REQ_FMT0("OST_CONNECT",
1163 obd_connect_client, obd_connect_server);
1164 EXPORT_SYMBOL(RQF_OST_CONNECT);
1166 const struct req_format RQF_OST_DISCONNECT =
1167 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1168 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1170 const struct req_format RQF_OST_GETATTR =
1171 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1172 EXPORT_SYMBOL(RQF_OST_GETATTR);
1174 const struct req_format RQF_OST_SETATTR =
1175 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1176 EXPORT_SYMBOL(RQF_OST_SETATTR);
1178 const struct req_format RQF_OST_CREATE =
1179 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1180 EXPORT_SYMBOL(RQF_OST_CREATE);
1182 const struct req_format RQF_OST_PUNCH =
1183 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1184 EXPORT_SYMBOL(RQF_OST_PUNCH);
1186 const struct req_format RQF_OST_SYNC =
1187 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1188 EXPORT_SYMBOL(RQF_OST_SYNC);
1190 const struct req_format RQF_OST_DESTROY =
1191 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1192 EXPORT_SYMBOL(RQF_OST_DESTROY);
1194 const struct req_format RQF_OST_BRW =
1195 DEFINE_REQ_FMT0("OST_BRW", ost_brw_client, ost_brw_server);
1196 EXPORT_SYMBOL(RQF_OST_BRW);
1198 const struct req_format RQF_OST_STATFS =
1199 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1200 EXPORT_SYMBOL(RQF_OST_STATFS);
1202 const struct req_format RQF_OST_SET_INFO =
1203 DEFINE_REQ_FMT0("OST_SET_INFO", ost_set_info_client, empty);
1204 EXPORT_SYMBOL(RQF_OST_SET_INFO);
1206 const struct req_format RQF_OST_SET_GRANT_INFO =
1207 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", ost_set_info_client,
1209 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1211 const struct req_format RQF_OST_GET_INFO_GENERIC =
1212 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1213 ost_get_info_generic_server);
1214 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1216 const struct req_format RQF_OST_GET_INFO_LAST_ID =
1217 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1218 ost_get_last_id_server);
1219 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1221 const struct req_format RQF_OST_GET_INFO_FIEMAP =
1222 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1223 ost_get_fiemap_server);
1224 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1227 #if !defined(__REQ_LAYOUT_USER__)
1229 int req_layout_init(void)
1235 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1236 struct req_format *rf;
1238 rf = (struct req_format *)req_formats[i];
1240 for (j = 0; j < RCL_NR; ++j) {
1241 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1242 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1243 struct req_msg_field *field;
1245 field = (typeof(field))rf->rf_fields[j].d[k];
1246 LASSERT(field->rmf_offset[i][j] == 0);
1248 * k + 1 to detect unused format/field
1251 field->rmf_offset[i][j] = k + 1;
1257 EXPORT_SYMBOL(req_layout_init);
1259 void req_layout_fini(void)
1262 EXPORT_SYMBOL(req_layout_fini);
1264 void req_capsule_init_area(struct req_capsule *pill)
1268 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1269 pill->rc_area[RCL_CLIENT][i] = -1;
1270 pill->rc_area[RCL_SERVER][i] = -1;
1273 EXPORT_SYMBOL(req_capsule_init_area);
1276 * Initialize capsule.
1278 * @area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1279 * variable-sized fields.
1281 void req_capsule_init(struct req_capsule *pill,
1282 struct ptlrpc_request *req,
1283 enum req_location location)
1285 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1287 memset(pill, 0, sizeof *pill);
1289 pill->rc_loc = location;
1290 req_capsule_init_area(pill);
1292 EXPORT_SYMBOL(req_capsule_init);
1294 void req_capsule_fini(struct req_capsule *pill)
1297 EXPORT_SYMBOL(req_capsule_fini);
1299 static int __req_format_is_sane(const struct req_format *fmt)
1302 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1303 req_formats[fmt->rf_idx] == fmt;
1306 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1307 enum req_location loc)
1309 struct ptlrpc_request *req;
1312 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1315 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1317 LASSERT(pill->rc_fmt == NULL);
1318 LASSERT(__req_format_is_sane(fmt));
1322 EXPORT_SYMBOL(req_capsule_set);
1324 int req_capsule_filled_sizes(struct req_capsule *pill,
1325 enum req_location loc)
1327 const struct req_format *fmt = pill->rc_fmt;
1330 LASSERT(fmt != NULL);
1332 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1333 if (pill->rc_area[loc][i] == -1) {
1334 pill->rc_area[loc][i] =
1335 fmt->rf_fields[loc].d[i]->rmf_size;
1336 if (pill->rc_area[loc][i] == -1) {
1337 /* skip the following fields */
1338 LASSERT(loc != RCL_SERVER);
1345 EXPORT_SYMBOL(req_capsule_filled_sizes);
1347 int req_capsule_server_pack(struct req_capsule *pill)
1349 const struct req_format *fmt;
1353 LASSERT(pill->rc_loc == RCL_SERVER);
1355 LASSERT(fmt != NULL);
1357 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1358 rc = lustre_pack_reply(pill->rc_req, count,
1359 pill->rc_area[RCL_SERVER], NULL);
1361 DEBUG_REQ(D_ERROR, pill->rc_req,
1362 "Cannot pack %d fields in format `%s': ",
1363 count, fmt->rf_name);
1367 EXPORT_SYMBOL(req_capsule_server_pack);
1369 static int __req_capsule_offset(const struct req_capsule *pill,
1370 const struct req_msg_field *field,
1371 enum req_location loc)
1375 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1376 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1377 pill->rc_fmt->rf_name,
1378 field->rmf_name, offset, loc);
1380 LASSERT(0 <= offset && offset < (sizeof(pill->rc_swabbed) << 3));
1384 static void *__req_capsule_get(struct req_capsule *pill,
1385 const struct req_msg_field *field,
1386 enum req_location loc,
1387 void (*swabber)( void *))
1389 const struct req_format *fmt;
1390 struct lustre_msg *msg;
1395 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1397 static const char *rcl_names[RCL_NR] = {
1398 [RCL_CLIENT] = "client",
1399 [RCL_SERVER] = "server"
1402 LASSERT(pill != NULL);
1403 LASSERT(pill != LP_POISON);
1405 LASSERT(fmt != NULL);
1406 LASSERT(fmt != LP_POISON);
1407 LASSERT(__req_format_is_sane(fmt));
1409 offset = __req_capsule_offset(pill, field, loc);
1411 msg = __req_msg(pill, loc);
1412 LASSERT(msg != NULL);
1414 getter = (field->rmf_flags & RMF_F_STRING) ?
1415 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1417 if (pill->rc_area[loc][offset] != -1)
1418 len = pill->rc_area[loc][offset];
1420 len = max(field->rmf_size, 0);
1421 value = getter(msg, offset, len);
1423 swabber = swabber ?: field->rmf_swabber;
1424 if (!(pill->rc_swabbed & (1 << offset)) && loc != pill->rc_loc &&
1425 swabber != NULL && value != NULL &&
1426 lustre_msg_swabbed(msg)) {
1428 pill->rc_swabbed |= (1 << offset);
1430 if (value == NULL) {
1431 DEBUG_REQ(D_ERROR, pill->rc_req,
1432 "Wrong buffer for field `%s' (%d of %d) "
1433 "in format `%s': %d vs. %d (%s)\n",
1434 field->rmf_name, offset, lustre_msg_bufcount(msg), fmt->rf_name,
1435 lustre_msg_buflen(msg, offset), len,
1442 void *req_capsule_client_get(struct req_capsule *pill,
1443 const struct req_msg_field *field)
1445 return __req_capsule_get(pill, field, RCL_CLIENT, NULL);
1447 EXPORT_SYMBOL(req_capsule_client_get);
1449 void *req_capsule_client_swab_get(struct req_capsule *pill,
1450 const struct req_msg_field *field,
1451 void (*swabber)(void* ))
1453 return __req_capsule_get(pill, field, RCL_CLIENT, swabber);
1455 EXPORT_SYMBOL(req_capsule_client_swab_get);
1457 void *req_capsule_client_sized_get(struct req_capsule *pill,
1458 const struct req_msg_field *field,
1461 req_capsule_set_size(pill, field, RCL_CLIENT, len);
1462 return __req_capsule_get(pill, field, RCL_CLIENT, NULL);
1464 EXPORT_SYMBOL(req_capsule_client_sized_get);
1466 void *req_capsule_server_get(struct req_capsule *pill,
1467 const struct req_msg_field *field)
1469 return __req_capsule_get(pill, field, RCL_SERVER, NULL);
1471 EXPORT_SYMBOL(req_capsule_server_get);
1473 void *req_capsule_server_swab_get(struct req_capsule *pill,
1474 const struct req_msg_field *field,
1477 return __req_capsule_get(pill, field, RCL_SERVER, swabber);
1479 EXPORT_SYMBOL(req_capsule_server_swab_get);
1482 void *req_capsule_server_sized_get(struct req_capsule *pill,
1483 const struct req_msg_field *field,
1486 req_capsule_set_size(pill, field, RCL_SERVER, len);
1487 return __req_capsule_get(pill, field, RCL_SERVER, NULL);
1489 EXPORT_SYMBOL(req_capsule_server_sized_get);
1491 const void *req_capsule_other_get(struct req_capsule *pill,
1492 const struct req_msg_field *field)
1494 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL);
1496 EXPORT_SYMBOL(req_capsule_other_get);
1498 void req_capsule_set_size(struct req_capsule *pill,
1499 const struct req_msg_field *field,
1500 enum req_location loc, int size)
1502 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1504 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
1506 EXPORT_SYMBOL(req_capsule_set_size);
1508 /* NB: this function doesn't correspond with req_capsule_set_size(), which
1509 * actually sets the size in pill.rc_area[loc][offset], but this function
1510 * returns the message buflen[offset], maybe we should use another name.
1512 int req_capsule_get_size(const struct req_capsule *pill,
1513 const struct req_msg_field *field,
1514 enum req_location loc)
1516 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1518 return lustre_msg_buflen(__req_msg(pill, loc),
1519 __req_capsule_offset(pill, field, loc));
1521 EXPORT_SYMBOL(req_capsule_get_size);
1523 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
1525 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
1526 pill->rc_fmt->rf_fields[loc].nr,
1527 pill->rc_area[loc]);
1530 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
1531 enum req_location loc)
1535 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
1539 for (; i < fmt->rf_fields[loc].nr; ++i)
1540 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
1541 size += size_round(fmt->rf_fields[loc].d[i]->rmf_size);
1545 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1547 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
1552 const struct req_format *old;
1554 LASSERT(pill->rc_fmt != NULL);
1555 LASSERT(__req_format_is_sane(fmt));
1559 * Sanity checking...
1561 for (i = 0; i < RCL_NR; ++i) {
1562 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
1563 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
1564 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
1567 * Last field in old format can be shorter than in new.
1569 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
1570 FMT_FIELD(old, i, j)->rmf_size);
1572 /* last field should be returned to the unswabbed state */
1573 pill->rc_swabbed &= ~(__u32)(1 << j);
1576 EXPORT_SYMBOL(req_capsule_extend);
1578 int req_capsule_has_field(const struct req_capsule *pill,
1579 const struct req_msg_field *field,
1580 enum req_location loc)
1582 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1584 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1586 EXPORT_SYMBOL(req_capsule_has_field);
1588 int req_capsule_field_present(const struct req_capsule *pill,
1589 const struct req_msg_field *field,
1590 enum req_location loc)
1594 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1595 LASSERT(req_capsule_has_field(pill, field, loc));
1597 offset = __req_capsule_offset(pill, field, loc);
1598 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
1600 EXPORT_SYMBOL(req_capsule_field_present);
1602 void req_capsule_shrink(struct req_capsule *pill,
1603 const struct req_msg_field *field,
1604 unsigned int newlen,
1605 enum req_location loc)
1607 const struct req_format *fmt;
1608 struct lustre_msg *msg;
1613 LASSERT(fmt != NULL);
1614 LASSERT(__req_format_is_sane(fmt));
1615 LASSERT(req_capsule_has_field(pill, field, loc));
1616 LASSERT(req_capsule_field_present(pill, field, loc));
1618 offset = __req_capsule_offset(pill, field, loc);
1620 msg = __req_msg(pill, loc);
1621 len = lustre_msg_buflen(msg, offset);
1622 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
1623 fmt->rf_name, field->rmf_name, len, newlen);
1625 if (loc == RCL_CLIENT)
1626 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
1629 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
1632 EXPORT_SYMBOL(req_capsule_shrink);
1634 /* __REQ_LAYOUT_USER__ */