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 *obd_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_get_info_generic_server[] = {
509 static const struct req_msg_field *ost_get_info_generic_client[] = {
514 static const struct req_msg_field *ost_get_last_id_server[] = {
519 static const struct req_msg_field *ost_get_fiemap_client[] = {
525 static const struct req_msg_field *ost_get_fiemap_server[] = {
530 static const struct req_format *req_formats[] = {
544 &RQF_MDS_GETATTR_NAME,
553 &RQF_MDS_DONE_WRITING,
555 &RQF_MDS_REINT_CREATE,
556 &RQF_MDS_REINT_CREATE_RMT_ACL,
557 &RQF_MDS_REINT_CREATE_SLAVE,
558 &RQF_MDS_REINT_CREATE_SYM,
560 &RQF_MDS_REINT_UNLINK,
562 &RQF_MDS_REINT_RENAME,
563 &RQF_MDS_REINT_SETATTR,
564 &RQF_MDS_REINT_SETXATTR,
567 &RQF_MDS_QUOTA_DQACQ,
573 &RQF_OST_QUOTA_ADJUST_QUNIT,
582 &RQF_OST_SET_GRANT_INFO,
583 &RQF_OST_GET_INFO_GENERIC,
584 &RQF_OST_GET_INFO_LAST_ID,
585 &RQF_OST_GET_INFO_FIEMAP,
587 &RQF_LDLM_ENQUEUE_LVB,
591 &RQF_LDLM_CP_CALLBACK,
592 &RQF_LDLM_BL_CALLBACK,
593 &RQF_LDLM_GL_CALLBACK,
595 &RQF_LDLM_INTENT_GETATTR,
596 &RQF_LDLM_INTENT_OPEN,
597 &RQF_LDLM_INTENT_CREATE,
598 &RQF_LDLM_INTENT_UNLINK,
601 &RQF_LLOG_ORIGIN_HANDLE_CREATE,
602 &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
603 &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
604 &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
605 &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
606 &RQF_LLOG_ORIGIN_CONNECT
609 struct req_msg_field {
611 const char *rmf_name;
613 * Field length. (-1) means "variable length".
616 void (*rmf_swabber)(void *);
617 int rmf_offset[ARRAY_SIZE(req_formats)][RCL_NR];
621 RMF_F_STRING = 1 << 0,
622 RMF_F_NO_SIZE_CHECK = 1 << 1
630 #define DEFINE_MSGF(name, flags, size, swabber) { \
631 .rmf_name = (name), \
632 .rmf_flags = (flags), \
633 .rmf_size = (size), \
634 .rmf_swabber = (void (*)(void*))(swabber) \
637 const struct req_msg_field RMF_GENERIC_DATA =
638 DEFINE_MSGF("generic_data", 0,
640 EXPORT_SYMBOL(RMF_GENERIC_DATA);
642 const struct req_msg_field RMF_MGS_TARGET_INFO =
643 DEFINE_MSGF("mgs_target_info", 0,
644 sizeof(struct mgs_target_info),
645 lustre_swab_mgs_target_info);
646 EXPORT_SYMBOL(RMF_MGS_TARGET_INFO);
648 const struct req_msg_field RMF_MGS_SEND_PARAM =
649 DEFINE_MSGF("mgs_send_param", 0,
650 sizeof(struct mgs_send_param),
652 EXPORT_SYMBOL(RMF_MGS_SEND_PARAM);
654 const struct req_msg_field RMF_SETINFO_VAL =
655 DEFINE_MSGF("setinfo_val", 0, -1, NULL);
656 EXPORT_SYMBOL(RMF_SETINFO_VAL);
658 const struct req_msg_field RMF_GETINFO_KEY =
659 DEFINE_MSGF("getinfo_key", 0, -1, NULL);
660 EXPORT_SYMBOL(RMF_GETINFO_KEY);
662 const struct req_msg_field RMF_GETINFO_VALLEN =
663 DEFINE_MSGF("getinfo_vallen", 0,
664 sizeof(__u32), lustre_swab_generic_32s);
665 EXPORT_SYMBOL(RMF_GETINFO_VALLEN);
667 const struct req_msg_field RMF_GETINFO_VAL =
668 DEFINE_MSGF("getinfo_val", 0, -1, NULL);
669 EXPORT_SYMBOL(RMF_GETINFO_VAL);
671 const struct req_msg_field RMF_SEQ_OPC =
672 DEFINE_MSGF("seq_query_opc", 0,
673 sizeof(__u32), lustre_swab_generic_32s);
674 EXPORT_SYMBOL(RMF_SEQ_OPC);
676 const struct req_msg_field RMF_SEQ_RANGE =
677 DEFINE_MSGF("seq_query_range", 0,
678 sizeof(struct lu_seq_range), lustre_swab_lu_seq_range);
679 EXPORT_SYMBOL(RMF_SEQ_RANGE);
681 const struct req_msg_field RMF_FLD_OPC =
682 DEFINE_MSGF("fld_query_opc", 0,
683 sizeof(__u32), lustre_swab_generic_32s);
684 EXPORT_SYMBOL(RMF_FLD_OPC);
686 const struct req_msg_field RMF_FLD_MDFLD =
687 DEFINE_MSGF("fld_query_mdfld", 0,
688 sizeof(struct lu_seq_range), lustre_swab_lu_seq_range);
689 EXPORT_SYMBOL(RMF_FLD_MDFLD);
691 const struct req_msg_field RMF_MDT_BODY =
692 DEFINE_MSGF("mdt_body", 0,
693 sizeof(struct mdt_body), lustre_swab_mdt_body);
694 EXPORT_SYMBOL(RMF_MDT_BODY);
696 const struct req_msg_field RMF_OBD_QUOTACTL =
697 DEFINE_MSGF("obd_quotactl", 0,
698 sizeof(struct obd_quotactl), lustre_swab_obd_quotactl);
699 EXPORT_SYMBOL(RMF_OBD_QUOTACTL);
701 const struct req_msg_field RMF_QUOTA_ADJUST_QUNIT =
702 DEFINE_MSGF("quota_adjust_qunit", 0,
703 sizeof(struct quota_adjust_qunit),
704 lustre_swab_quota_adjust_qunit);
705 EXPORT_SYMBOL(RMF_QUOTA_ADJUST_QUNIT);
707 const struct req_msg_field RMF_QUNIT_DATA =
708 DEFINE_MSGF("qunit_data", 0,
709 sizeof(struct qunit_data), NULL);
710 EXPORT_SYMBOL(RMF_QUNIT_DATA);
712 const struct req_msg_field RMF_MDT_EPOCH =
713 DEFINE_MSGF("mdt_epoch", 0,
714 sizeof(struct mdt_epoch), lustre_swab_mdt_epoch);
715 EXPORT_SYMBOL(RMF_MDT_EPOCH);
717 const struct req_msg_field RMF_PTLRPC_BODY =
718 DEFINE_MSGF("ptlrpc_body", 0,
719 sizeof(struct ptlrpc_body), lustre_swab_ptlrpc_body);
720 EXPORT_SYMBOL(RMF_PTLRPC_BODY);
722 const struct req_msg_field RMF_OBD_STATFS =
723 DEFINE_MSGF("obd_statfs", 0,
724 sizeof(struct obd_statfs), lustre_swab_obd_statfs);
725 EXPORT_SYMBOL(RMF_OBD_STATFS);
727 const struct req_msg_field RMF_SETINFO_KEY =
728 DEFINE_MSGF("setinfo_key", 0, -1, NULL);
729 EXPORT_SYMBOL(RMF_SETINFO_KEY);
731 const struct req_msg_field RMF_NAME =
732 DEFINE_MSGF("name", RMF_F_STRING, -1, NULL);
733 EXPORT_SYMBOL(RMF_NAME);
735 const struct req_msg_field RMF_SYMTGT =
736 DEFINE_MSGF("symtgt", RMF_F_STRING, -1, NULL);
737 EXPORT_SYMBOL(RMF_SYMTGT);
739 const struct req_msg_field RMF_TGTUUID =
740 DEFINE_MSGF("tgtuuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL);
741 EXPORT_SYMBOL(RMF_TGTUUID);
743 const struct req_msg_field RMF_CLUUID =
744 DEFINE_MSGF("cluuid", RMF_F_STRING, sizeof(struct obd_uuid) - 1, NULL);
745 EXPORT_SYMBOL(RMF_CLUUID);
747 const struct req_msg_field RMF_STRING =
748 DEFINE_MSGF("string", RMF_F_STRING, -1, NULL);
749 EXPORT_SYMBOL(RMF_STRING);
751 const struct req_msg_field RMF_LLOGD_BODY =
752 DEFINE_MSGF("llogd_body", 0,
753 sizeof(struct llogd_body), lustre_swab_llogd_body);
754 EXPORT_SYMBOL(RMF_LLOGD_BODY);
756 const struct req_msg_field RMF_LLOG_LOG_HDR =
757 DEFINE_MSGF("llog_log_hdr", 0,
758 sizeof(struct llog_log_hdr), lustre_swab_llog_hdr);
759 EXPORT_SYMBOL(RMF_LLOG_LOG_HDR);
761 const struct req_msg_field RMF_LLOGD_CONN_BODY =
762 DEFINE_MSGF("llogd_conn_body", 0,
763 sizeof(struct llogd_conn_body),
764 lustre_swab_llogd_conn_body);
765 EXPORT_SYMBOL(RMF_LLOGD_CONN_BODY);
768 * connection handle received in MDS_CONNECT request.
772 const struct req_msg_field RMF_CONN =
773 DEFINE_MSGF("conn", 0, sizeof(struct lustre_handle), NULL);
774 EXPORT_SYMBOL(RMF_CONN);
776 const struct req_msg_field RMF_CONNECT_DATA =
778 RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
779 sizeof(struct obd_connect_data), lustre_swab_connect);
780 EXPORT_SYMBOL(RMF_CONNECT_DATA);
782 const struct req_msg_field RMF_DLM_REQ =
783 DEFINE_MSGF("dlm_req", RMF_F_NO_SIZE_CHECK /* ldlm_request_bufsize */,
784 sizeof(struct ldlm_request), lustre_swab_ldlm_request);
785 EXPORT_SYMBOL(RMF_DLM_REQ);
787 const struct req_msg_field RMF_DLM_REP =
788 DEFINE_MSGF("dlm_rep", 0,
789 sizeof(struct ldlm_reply), lustre_swab_ldlm_reply);
790 EXPORT_SYMBOL(RMF_DLM_REP);
792 const struct req_msg_field RMF_LDLM_INTENT =
793 DEFINE_MSGF("ldlm_intent", 0,
794 sizeof(struct ldlm_intent), lustre_swab_ldlm_intent);
795 EXPORT_SYMBOL(RMF_LDLM_INTENT);
797 const struct req_msg_field RMF_DLM_LVB =
798 DEFINE_MSGF("dlm_lvb", 0, sizeof(struct ost_lvb), NULL);
799 EXPORT_SYMBOL(RMF_DLM_LVB);
801 const struct req_msg_field RMF_MDT_MD =
802 DEFINE_MSGF("mdt_md", RMF_F_NO_SIZE_CHECK, MIN_MD_SIZE, NULL);
803 EXPORT_SYMBOL(RMF_MDT_MD);
805 const struct req_msg_field RMF_REC_REINT =
806 DEFINE_MSGF("rec_reint", 0, sizeof(struct mdt_rec_reint),
807 lustre_swab_mdt_rec_reint);
808 EXPORT_SYMBOL(RMF_REC_REINT);
810 const struct req_msg_field RMF_REC_JOINFILE =
811 DEFINE_MSGF("rec_joinfile", 0, sizeof(struct mdt_rec_join),
812 lustre_swab_mdt_rec_join);
813 EXPORT_SYMBOL(RMF_REC_JOINFILE);
815 /* FIXME: this length should be defined as a macro */
816 const struct req_msg_field RMF_EADATA = DEFINE_MSGF("eadata", 0, -1, NULL);
817 EXPORT_SYMBOL(RMF_EADATA);
819 const struct req_msg_field RMF_ACL =
820 DEFINE_MSGF("acl", RMF_F_NO_SIZE_CHECK,
821 LUSTRE_POSIX_ACL_MAX_SIZE, NULL);
822 EXPORT_SYMBOL(RMF_ACL);
824 const struct req_msg_field RMF_LOGCOOKIES =
825 DEFINE_MSGF("logcookies", RMF_F_NO_SIZE_CHECK /* multiple cookies */,
826 sizeof(struct llog_cookie), NULL);
827 EXPORT_SYMBOL(RMF_LOGCOOKIES);
829 const struct req_msg_field RMF_CAPA1 =
830 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
831 lustre_swab_lustre_capa);
832 EXPORT_SYMBOL(RMF_CAPA1);
834 const struct req_msg_field RMF_CAPA2 =
835 DEFINE_MSGF("capa", 0, sizeof(struct lustre_capa),
836 lustre_swab_lustre_capa);
837 EXPORT_SYMBOL(RMF_CAPA2);
842 const struct req_msg_field RMF_OST_BODY =
843 DEFINE_MSGF("ost_body", 0,
844 sizeof(struct ost_body), lustre_swab_ost_body);
845 EXPORT_SYMBOL(RMF_OST_BODY);
847 const struct req_msg_field RMF_OBD_IOOBJ =
848 DEFINE_MSGF("obd_ioobj", 0,
849 sizeof(struct obd_ioobj), lustre_swab_obd_ioobj);
850 EXPORT_SYMBOL(RMF_OBD_IOOBJ);
852 const struct req_msg_field RMF_NIOBUF_REMOTE =
853 DEFINE_MSGF("niobuf_remote", 0, -1, lustre_swab_niobuf_remote);
854 EXPORT_SYMBOL(RMF_NIOBUF_REMOTE);
856 const struct req_msg_field RMF_OBD_ID =
857 DEFINE_MSGF("obd_id", 0,
858 sizeof(obd_id), lustre_swab_ost_last_id);
859 EXPORT_SYMBOL(RMF_OBD_ID);
861 const struct req_msg_field RMF_FIEMAP_KEY =
862 DEFINE_MSGF("fiemap", 0, sizeof(struct ll_fiemap_info_key),
864 EXPORT_SYMBOL(RMF_FIEMAP_KEY);
866 const struct req_msg_field RMF_FIEMAP_VAL =
867 DEFINE_MSGF("fiemap", 0, -1, lustre_swab_fiemap);
868 EXPORT_SYMBOL(RMF_FIEMAP_VAL);
879 const struct req_msg_field **d;
883 #define DEFINE_REQ_FMT(name, client, client_nr, server, server_nr) { \
897 #define DEFINE_REQ_FMT0(name, client, server) \
898 DEFINE_REQ_FMT(name, client, ARRAY_SIZE(client), server, ARRAY_SIZE(server))
900 const struct req_format RQF_OBD_PING =
901 DEFINE_REQ_FMT0("OBD_PING", empty, empty);
902 EXPORT_SYMBOL(RQF_OBD_PING);
904 const struct req_format RQF_OBD_SET_INFO =
905 DEFINE_REQ_FMT0("OBD_SET_INFO", obd_set_info_client, empty);
906 EXPORT_SYMBOL(RQF_OBD_SET_INFO);
908 const struct req_format RQF_SEC_CTX =
909 DEFINE_REQ_FMT0("SEC_CTX", empty, empty);
910 EXPORT_SYMBOL(RQF_SEC_CTX);
912 const struct req_format RQF_MGS_TARGET_REG =
913 DEFINE_REQ_FMT0("MGS_TARGET_REG", mgs_target_info_only,
914 mgs_target_info_only);
915 EXPORT_SYMBOL(RQF_MGS_TARGET_REG);
917 const struct req_format RQF_MGS_SET_INFO =
918 DEFINE_REQ_FMT0("MGS_SET_INFO", mgs_set_info,
920 EXPORT_SYMBOL(RQF_MGS_SET_INFO);
922 const struct req_format RQF_SEQ_QUERY =
923 DEFINE_REQ_FMT0("SEQ_QUERY", seq_query_client, seq_query_server);
924 EXPORT_SYMBOL(RQF_SEQ_QUERY);
926 const struct req_format RQF_FLD_QUERY =
927 DEFINE_REQ_FMT0("FLD_QUERY", fld_query_client, fld_query_server);
928 EXPORT_SYMBOL(RQF_FLD_QUERY);
930 const struct req_format RQF_LOG_CANCEL =
931 DEFINE_REQ_FMT0("OBD_LOG_CANCEL", log_cancel_client, empty);
932 EXPORT_SYMBOL(RQF_LOG_CANCEL);
934 const struct req_format RQF_MDS_QUOTACHECK =
935 DEFINE_REQ_FMT0("MDS_QUOTACHECK", quotactl_only, empty);
936 EXPORT_SYMBOL(RQF_MDS_QUOTACHECK);
938 const struct req_format RQF_OST_QUOTACHECK =
939 DEFINE_REQ_FMT0("OST_QUOTACHECK", quotactl_only, empty);
940 EXPORT_SYMBOL(RQF_OST_QUOTACHECK);
942 const struct req_format RQF_MDS_QUOTACTL =
943 DEFINE_REQ_FMT0("MDS_QUOTACTL", quotactl_only, quotactl_only);
944 EXPORT_SYMBOL(RQF_MDS_QUOTACTL);
946 const struct req_format RQF_OST_QUOTACTL =
947 DEFINE_REQ_FMT0("OST_QUOTACTL", quotactl_only, quotactl_only);
948 EXPORT_SYMBOL(RQF_OST_QUOTACTL);
950 const struct req_format RQF_OST_QUOTA_ADJUST_QUNIT =
951 DEFINE_REQ_FMT0("OST_QUOTA_ADJUST_QUNIT", quota_adjust_qunit_only,
952 quota_adjust_qunit_only);
953 EXPORT_SYMBOL(RQF_OST_QUOTA_ADJUST_QUNIT);
955 const struct req_format RQF_QC_CALLBACK =
956 DEFINE_REQ_FMT0("QC_CALLBACK", quotactl_only, empty);
957 EXPORT_SYMBOL(RQF_QC_CALLBACK);
959 const struct req_format RQF_MDS_QUOTA_DQACQ =
960 DEFINE_REQ_FMT0("MDS_QUOTA_DQACQ", qunit_data_only, qunit_data_only);
961 EXPORT_SYMBOL(RQF_MDS_QUOTA_DQACQ);
963 const struct req_format RQF_MDS_GETSTATUS =
964 DEFINE_REQ_FMT0("MDS_GETSTATUS", mdt_body_only, mdt_body_capa);
965 EXPORT_SYMBOL(RQF_MDS_GETSTATUS);
967 const struct req_format RQF_MDS_STATFS =
968 DEFINE_REQ_FMT0("MDS_STATFS", empty, obd_statfs_server);
969 EXPORT_SYMBOL(RQF_MDS_STATFS);
971 const struct req_format RQF_MDS_SYNC =
972 DEFINE_REQ_FMT0("MDS_SYNC", mdt_body_capa, mdt_body_only);
973 EXPORT_SYMBOL(RQF_MDS_SYNC);
975 const struct req_format RQF_MDS_GETATTR =
976 DEFINE_REQ_FMT0("MDS_GETATTR", mdt_body_capa, mds_getattr_server);
977 EXPORT_SYMBOL(RQF_MDS_GETATTR);
979 const struct req_format RQF_MDS_GETXATTR =
980 DEFINE_REQ_FMT0("MDS_GETXATTR",
981 mds_getxattr_client, mds_getxattr_server);
982 EXPORT_SYMBOL(RQF_MDS_GETXATTR);
984 const struct req_format RQF_MDS_GETATTR_NAME =
985 DEFINE_REQ_FMT0("MDS_GETATTR_NAME",
986 mds_getattr_name_client, mds_getattr_server);
987 EXPORT_SYMBOL(RQF_MDS_GETATTR_NAME);
989 const struct req_format RQF_MDS_REINT =
990 DEFINE_REQ_FMT0("MDS_REINT", mds_reint_client, mdt_body_only);
991 EXPORT_SYMBOL(RQF_MDS_REINT);
993 const struct req_format RQF_MDS_REINT_CREATE =
994 DEFINE_REQ_FMT0("MDS_REINT_CREATE",
995 mds_reint_create_client, mdt_body_capa);
996 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE);
998 const struct req_format RQF_MDS_REINT_CREATE_RMT_ACL =
999 DEFINE_REQ_FMT0("MDS_REINT_CREATE_RMT_ACL",
1000 mds_reint_create_rmt_acl_client, mdt_body_capa);
1001 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_RMT_ACL);
1003 const struct req_format RQF_MDS_REINT_CREATE_SLAVE =
1004 DEFINE_REQ_FMT0("MDS_REINT_CREATE_EA",
1005 mds_reint_create_slave_client, mdt_body_capa);
1006 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SLAVE);
1008 const struct req_format RQF_MDS_REINT_CREATE_SYM =
1009 DEFINE_REQ_FMT0("MDS_REINT_CREATE_SYM",
1010 mds_reint_create_sym_client, mdt_body_capa);
1011 EXPORT_SYMBOL(RQF_MDS_REINT_CREATE_SYM);
1013 const struct req_format RQF_MDS_REINT_OPEN =
1014 DEFINE_REQ_FMT0("MDS_REINT_OPEN",
1015 mds_reint_open_client, mds_reint_open_server);
1016 EXPORT_SYMBOL(RQF_MDS_REINT_OPEN);
1018 const struct req_format RQF_MDS_REINT_UNLINK =
1019 DEFINE_REQ_FMT0("MDS_REINT_UNLINK", mds_reint_unlink_client,
1020 mds_last_unlink_server);
1021 EXPORT_SYMBOL(RQF_MDS_REINT_UNLINK);
1023 const struct req_format RQF_MDS_REINT_LINK =
1024 DEFINE_REQ_FMT0("MDS_REINT_LINK",
1025 mds_reint_link_client, mdt_body_only);
1026 EXPORT_SYMBOL(RQF_MDS_REINT_LINK);
1028 const struct req_format RQF_MDS_REINT_RENAME =
1029 DEFINE_REQ_FMT0("MDS_REINT_RENAME", mds_reint_rename_client,
1030 mds_last_unlink_server);
1031 EXPORT_SYMBOL(RQF_MDS_REINT_RENAME);
1033 const struct req_format RQF_MDS_REINT_SETATTR =
1034 DEFINE_REQ_FMT0("MDS_REINT_SETATTR",
1035 mds_reint_setattr_client, mds_setattr_server);
1036 EXPORT_SYMBOL(RQF_MDS_REINT_SETATTR);
1038 const struct req_format RQF_MDS_REINT_SETXATTR =
1039 DEFINE_REQ_FMT0("MDS_REINT_SETXATTR",
1040 mds_reint_setxattr_client, mdt_body_only);
1041 EXPORT_SYMBOL(RQF_MDS_REINT_SETXATTR);
1043 const struct req_format RQF_MDS_CONNECT =
1044 DEFINE_REQ_FMT0("MDS_CONNECT",
1045 obd_connect_client, obd_connect_server);
1046 EXPORT_SYMBOL(RQF_MDS_CONNECT);
1048 const struct req_format RQF_MDS_DISCONNECT =
1049 DEFINE_REQ_FMT0("MDS_DISCONNECT", empty, empty);
1050 EXPORT_SYMBOL(RQF_MDS_DISCONNECT);
1052 const struct req_format RQF_MDS_GET_INFO =
1053 DEFINE_REQ_FMT0("MDS_GET_INFO", mds_getinfo_client,
1054 mds_getinfo_server);
1055 EXPORT_SYMBOL(RQF_MDS_GET_INFO);
1057 const struct req_format RQF_LDLM_ENQUEUE =
1058 DEFINE_REQ_FMT0("LDLM_ENQUEUE",
1059 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1060 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE);
1062 const struct req_format RQF_LDLM_ENQUEUE_LVB =
1063 DEFINE_REQ_FMT0("LDLM_ENQUEUE_LVB",
1064 ldlm_enqueue_client, ldlm_enqueue_lvb_server);
1065 EXPORT_SYMBOL(RQF_LDLM_ENQUEUE_LVB);
1067 const struct req_format RQF_LDLM_CONVERT =
1068 DEFINE_REQ_FMT0("LDLM_CONVERT",
1069 ldlm_enqueue_client, ldlm_enqueue_server);
1070 EXPORT_SYMBOL(RQF_LDLM_CONVERT);
1072 const struct req_format RQF_LDLM_CANCEL =
1073 DEFINE_REQ_FMT0("LDLM_CANCEL", ldlm_enqueue_client, empty);
1074 EXPORT_SYMBOL(RQF_LDLM_CANCEL);
1076 const struct req_format RQF_LDLM_CALLBACK =
1077 DEFINE_REQ_FMT0("LDLM_CALLBACK", ldlm_enqueue_client, empty);
1078 EXPORT_SYMBOL(RQF_LDLM_CALLBACK);
1080 const struct req_format RQF_LDLM_CP_CALLBACK =
1081 DEFINE_REQ_FMT0("LDLM_CP_CALLBACK", ldlm_cp_callback_client, empty);
1082 EXPORT_SYMBOL(RQF_LDLM_CP_CALLBACK);
1084 const struct req_format RQF_LDLM_BL_CALLBACK =
1085 DEFINE_REQ_FMT0("LDLM_BL_CALLBACK", ldlm_enqueue_client, empty);
1086 EXPORT_SYMBOL(RQF_LDLM_BL_CALLBACK);
1088 const struct req_format RQF_LDLM_GL_CALLBACK =
1089 DEFINE_REQ_FMT0("LDLM_GL_CALLBACK", ldlm_enqueue_client,
1090 ldlm_gl_callback_server);
1091 EXPORT_SYMBOL(RQF_LDLM_GL_CALLBACK);
1093 const struct req_format RQF_LDLM_INTENT =
1094 DEFINE_REQ_FMT0("LDLM_INTENT",
1095 ldlm_intent_client, ldlm_intent_server);
1096 EXPORT_SYMBOL(RQF_LDLM_INTENT);
1098 const struct req_format RQF_LDLM_INTENT_GETATTR =
1099 DEFINE_REQ_FMT0("LDLM_INTENT_GETATTR",
1100 ldlm_intent_getattr_client, ldlm_intent_getattr_server);
1101 EXPORT_SYMBOL(RQF_LDLM_INTENT_GETATTR);
1103 const struct req_format RQF_LDLM_INTENT_OPEN =
1104 DEFINE_REQ_FMT0("LDLM_INTENT_OPEN",
1105 ldlm_intent_open_client, ldlm_intent_open_server);
1106 EXPORT_SYMBOL(RQF_LDLM_INTENT_OPEN);
1108 const struct req_format RQF_LDLM_INTENT_CREATE =
1109 DEFINE_REQ_FMT0("LDLM_INTENT_CREATE",
1110 ldlm_intent_create_client, ldlm_intent_getattr_server);
1111 EXPORT_SYMBOL(RQF_LDLM_INTENT_CREATE);
1113 const struct req_format RQF_LDLM_INTENT_UNLINK =
1114 DEFINE_REQ_FMT0("LDLM_INTENT_UNLINK",
1115 ldlm_intent_unlink_client, ldlm_intent_server);
1116 EXPORT_SYMBOL(RQF_LDLM_INTENT_UNLINK);
1118 const struct req_format RQF_MDS_CLOSE =
1119 DEFINE_REQ_FMT0("MDS_CLOSE",
1120 mdt_close_client, mds_last_unlink_server);
1121 EXPORT_SYMBOL(RQF_MDS_CLOSE);
1123 const struct req_format RQF_MDS_PIN =
1124 DEFINE_REQ_FMT0("MDS_PIN",
1125 mdt_body_capa, mdt_body_only);
1126 EXPORT_SYMBOL(RQF_MDS_PIN);
1128 const struct req_format RQF_MDS_UNPIN =
1129 DEFINE_REQ_FMT0("MDS_UNPIN", mdt_body_only, empty);
1130 EXPORT_SYMBOL(RQF_MDS_UNPIN);
1132 const struct req_format RQF_MDS_DONE_WRITING =
1133 DEFINE_REQ_FMT0("MDS_DONE_WRITING",
1134 mdt_close_client, mdt_body_only);
1135 EXPORT_SYMBOL(RQF_MDS_DONE_WRITING);
1137 const struct req_format RQF_MDS_READPAGE =
1138 DEFINE_REQ_FMT0("MDS_READPAGE",
1139 mdt_body_capa, mdt_body_only);
1140 EXPORT_SYMBOL(RQF_MDS_READPAGE);
1142 /* This is for split */
1143 const struct req_format RQF_MDS_WRITEPAGE =
1144 DEFINE_REQ_FMT0("MDS_WRITEPAGE",
1145 mdt_body_capa, mdt_body_only);
1146 EXPORT_SYMBOL(RQF_MDS_WRITEPAGE);
1148 const struct req_format RQF_MDS_IS_SUBDIR =
1149 DEFINE_REQ_FMT0("MDS_IS_SUBDIR",
1150 mdt_body_only, mdt_body_only);
1151 EXPORT_SYMBOL(RQF_MDS_IS_SUBDIR);
1153 const struct req_format RQF_LLOG_CATINFO =
1154 DEFINE_REQ_FMT0("LLOG_CATINFO",
1155 llog_catinfo_client, llog_catinfo_server);
1156 EXPORT_SYMBOL(RQF_LLOG_CATINFO);
1158 const struct req_format RQF_LLOG_ORIGIN_HANDLE_CREATE =
1159 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_CREATE",
1160 llog_origin_handle_create_client, llogd_body_only);
1161 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_CREATE);
1163 const struct req_format RQF_LLOG_ORIGIN_HANDLE_DESTROY =
1164 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_DESTROY",
1165 llogd_body_only, llogd_body_only);
1166 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_DESTROY);
1168 const struct req_format RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK =
1169 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_NEXT_BLOCK",
1170 llogd_body_only, llog_origin_handle_next_block_server);
1171 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
1173 const struct req_format RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK =
1174 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_PREV_BLOCK",
1175 llogd_body_only, llog_origin_handle_next_block_server);
1176 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK);
1178 const struct req_format RQF_LLOG_ORIGIN_HANDLE_READ_HEADER =
1179 DEFINE_REQ_FMT0("LLOG_ORIGIN_HANDLE_READ_HEADER",
1180 llogd_body_only, llog_log_hdr_only);
1181 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_HANDLE_READ_HEADER);
1183 const struct req_format RQF_LLOG_ORIGIN_CONNECT =
1184 DEFINE_REQ_FMT0("LLOG_ORIGIN_CONNECT", llogd_conn_body_only, empty);
1185 EXPORT_SYMBOL(RQF_LLOG_ORIGIN_CONNECT);
1187 const struct req_format RQF_OST_CONNECT =
1188 DEFINE_REQ_FMT0("OST_CONNECT",
1189 obd_connect_client, obd_connect_server);
1190 EXPORT_SYMBOL(RQF_OST_CONNECT);
1192 const struct req_format RQF_OST_DISCONNECT =
1193 DEFINE_REQ_FMT0("OST_DISCONNECT", empty, empty);
1194 EXPORT_SYMBOL(RQF_OST_DISCONNECT);
1196 const struct req_format RQF_OST_GETATTR =
1197 DEFINE_REQ_FMT0("OST_GETATTR", ost_body_capa, ost_body_only);
1198 EXPORT_SYMBOL(RQF_OST_GETATTR);
1200 const struct req_format RQF_OST_SETATTR =
1201 DEFINE_REQ_FMT0("OST_SETATTR", ost_body_capa, ost_body_only);
1202 EXPORT_SYMBOL(RQF_OST_SETATTR);
1204 const struct req_format RQF_OST_CREATE =
1205 DEFINE_REQ_FMT0("OST_CREATE", ost_body_only, ost_body_only);
1206 EXPORT_SYMBOL(RQF_OST_CREATE);
1208 const struct req_format RQF_OST_PUNCH =
1209 DEFINE_REQ_FMT0("OST_PUNCH", ost_body_capa, ost_body_only);
1210 EXPORT_SYMBOL(RQF_OST_PUNCH);
1212 const struct req_format RQF_OST_SYNC =
1213 DEFINE_REQ_FMT0("OST_SYNC", ost_body_capa, ost_body_only);
1214 EXPORT_SYMBOL(RQF_OST_SYNC);
1216 const struct req_format RQF_OST_DESTROY =
1217 DEFINE_REQ_FMT0("OST_DESTROY", ost_destroy_client, ost_body_only);
1218 EXPORT_SYMBOL(RQF_OST_DESTROY);
1220 const struct req_format RQF_OST_BRW =
1221 DEFINE_REQ_FMT0("OST_BRW", ost_brw_client, ost_brw_server);
1222 EXPORT_SYMBOL(RQF_OST_BRW);
1224 const struct req_format RQF_OST_STATFS =
1225 DEFINE_REQ_FMT0("OST_STATFS", empty, obd_statfs_server);
1226 EXPORT_SYMBOL(RQF_OST_STATFS);
1228 const struct req_format RQF_OST_SET_GRANT_INFO =
1229 DEFINE_REQ_FMT0("OST_SET_GRANT_INFO", obd_set_info_client,
1231 EXPORT_SYMBOL(RQF_OST_SET_GRANT_INFO);
1233 const struct req_format RQF_OST_GET_INFO_GENERIC =
1234 DEFINE_REQ_FMT0("OST_GET_INFO", ost_get_info_generic_client,
1235 ost_get_info_generic_server);
1236 EXPORT_SYMBOL(RQF_OST_GET_INFO_GENERIC);
1238 const struct req_format RQF_OST_GET_INFO_LAST_ID =
1239 DEFINE_REQ_FMT0("OST_GET_INFO_LAST_ID", ost_get_info_generic_client,
1240 ost_get_last_id_server);
1241 EXPORT_SYMBOL(RQF_OST_GET_INFO_LAST_ID);
1243 const struct req_format RQF_OST_GET_INFO_FIEMAP =
1244 DEFINE_REQ_FMT0("OST_GET_INFO_FIEMAP", ost_get_fiemap_client,
1245 ost_get_fiemap_server);
1246 EXPORT_SYMBOL(RQF_OST_GET_INFO_FIEMAP);
1249 #if !defined(__REQ_LAYOUT_USER__)
1251 int req_layout_init(void)
1257 for (i = 0; i < ARRAY_SIZE(req_formats); ++i) {
1258 struct req_format *rf;
1260 rf = (struct req_format *)req_formats[i];
1262 for (j = 0; j < RCL_NR; ++j) {
1263 LASSERT(rf->rf_fields[j].nr <= REQ_MAX_FIELD_NR);
1264 for (k = 0; k < rf->rf_fields[j].nr; ++k) {
1265 struct req_msg_field *field;
1267 field = (typeof(field))rf->rf_fields[j].d[k];
1268 LASSERT(field->rmf_offset[i][j] == 0);
1270 * k + 1 to detect unused format/field
1273 field->rmf_offset[i][j] = k + 1;
1279 EXPORT_SYMBOL(req_layout_init);
1281 void req_layout_fini(void)
1284 EXPORT_SYMBOL(req_layout_fini);
1286 void req_capsule_init_area(struct req_capsule *pill)
1290 for (i = 0; i < ARRAY_SIZE(pill->rc_area[RCL_CLIENT]); i++) {
1291 pill->rc_area[RCL_CLIENT][i] = -1;
1292 pill->rc_area[RCL_SERVER][i] = -1;
1295 EXPORT_SYMBOL(req_capsule_init_area);
1298 * Initialize capsule.
1300 * @area is an array of REQ_MAX_FIELD_NR elements, used to store sizes of
1301 * variable-sized fields.
1303 void req_capsule_init(struct req_capsule *pill,
1304 struct ptlrpc_request *req,
1305 enum req_location location)
1307 LASSERT(location == RCL_SERVER || location == RCL_CLIENT);
1309 memset(pill, 0, sizeof *pill);
1311 pill->rc_loc = location;
1312 req_capsule_init_area(pill);
1314 EXPORT_SYMBOL(req_capsule_init);
1316 void req_capsule_fini(struct req_capsule *pill)
1319 EXPORT_SYMBOL(req_capsule_fini);
1321 static int __req_format_is_sane(const struct req_format *fmt)
1324 0 <= fmt->rf_idx && fmt->rf_idx < ARRAY_SIZE(req_formats) &&
1325 req_formats[fmt->rf_idx] == fmt;
1328 static struct lustre_msg *__req_msg(const struct req_capsule *pill,
1329 enum req_location loc)
1331 struct ptlrpc_request *req;
1334 return loc == RCL_CLIENT ? req->rq_reqmsg : req->rq_repmsg;
1337 void req_capsule_set(struct req_capsule *pill, const struct req_format *fmt)
1339 LASSERT(pill->rc_fmt == NULL);
1340 LASSERT(__req_format_is_sane(fmt));
1344 EXPORT_SYMBOL(req_capsule_set);
1346 int req_capsule_filled_sizes(struct req_capsule *pill,
1347 enum req_location loc)
1349 const struct req_format *fmt = pill->rc_fmt;
1352 LASSERT(fmt != NULL);
1354 for (i = 0; i < fmt->rf_fields[loc].nr; ++i) {
1355 if (pill->rc_area[loc][i] == -1) {
1356 pill->rc_area[loc][i] =
1357 fmt->rf_fields[loc].d[i]->rmf_size;
1358 if (pill->rc_area[loc][i] == -1) {
1359 /* skip the following fields */
1360 LASSERT(loc != RCL_SERVER);
1367 EXPORT_SYMBOL(req_capsule_filled_sizes);
1369 int req_capsule_server_pack(struct req_capsule *pill)
1371 const struct req_format *fmt;
1375 LASSERT(pill->rc_loc == RCL_SERVER);
1377 LASSERT(fmt != NULL);
1379 count = req_capsule_filled_sizes(pill, RCL_SERVER);
1380 rc = lustre_pack_reply(pill->rc_req, count,
1381 pill->rc_area[RCL_SERVER], NULL);
1383 DEBUG_REQ(D_ERROR, pill->rc_req,
1384 "Cannot pack %d fields in format `%s': ",
1385 count, fmt->rf_name);
1389 EXPORT_SYMBOL(req_capsule_server_pack);
1391 static int __req_capsule_offset(const struct req_capsule *pill,
1392 const struct req_msg_field *field,
1393 enum req_location loc)
1397 offset = field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1398 LASSERTF(offset > 0, "%s:%s, off=%d, loc=%d\n",
1399 pill->rc_fmt->rf_name,
1400 field->rmf_name, offset, loc);
1402 LASSERT(0 <= offset && offset < (sizeof(pill->rc_swabbed) << 3));
1406 static void *__req_capsule_get(struct req_capsule *pill,
1407 const struct req_msg_field *field,
1408 enum req_location loc,
1409 void (*swabber)( void *))
1411 const struct req_format *fmt;
1412 struct lustre_msg *msg;
1417 void *(*getter)(struct lustre_msg *m, int n, int minlen);
1419 static const char *rcl_names[RCL_NR] = {
1420 [RCL_CLIENT] = "client",
1421 [RCL_SERVER] = "server"
1424 LASSERT(pill != NULL);
1425 LASSERT(pill != LP_POISON);
1427 LASSERT(fmt != NULL);
1428 LASSERT(fmt != LP_POISON);
1429 LASSERT(__req_format_is_sane(fmt));
1431 offset = __req_capsule_offset(pill, field, loc);
1433 msg = __req_msg(pill, loc);
1434 LASSERT(msg != NULL);
1436 getter = (field->rmf_flags & RMF_F_STRING) ?
1437 (typeof(getter))lustre_msg_string : lustre_msg_buf;
1439 if (pill->rc_area[loc][offset] != -1)
1440 len = pill->rc_area[loc][offset];
1442 len = max(field->rmf_size, 0);
1443 value = getter(msg, offset, len);
1445 swabber = swabber ?: field->rmf_swabber;
1446 if (!(pill->rc_swabbed & (1 << offset)) && loc != pill->rc_loc &&
1447 swabber != NULL && value != NULL &&
1448 lustre_msg_swabbed(msg)) {
1450 pill->rc_swabbed |= (1 << offset);
1452 if (value == NULL) {
1453 DEBUG_REQ(D_ERROR, pill->rc_req,
1454 "Wrong buffer for field `%s' (%d of %d) "
1455 "in format `%s': %d vs. %d (%s)\n",
1456 field->rmf_name, offset, lustre_msg_bufcount(msg), fmt->rf_name,
1457 lustre_msg_buflen(msg, offset), len,
1464 void *req_capsule_client_get(struct req_capsule *pill,
1465 const struct req_msg_field *field)
1467 return __req_capsule_get(pill, field, RCL_CLIENT, NULL);
1469 EXPORT_SYMBOL(req_capsule_client_get);
1471 void *req_capsule_client_swab_get(struct req_capsule *pill,
1472 const struct req_msg_field *field,
1473 void (*swabber)(void* ))
1475 return __req_capsule_get(pill, field, RCL_CLIENT, swabber);
1477 EXPORT_SYMBOL(req_capsule_client_swab_get);
1479 void *req_capsule_client_sized_get(struct req_capsule *pill,
1480 const struct req_msg_field *field,
1483 req_capsule_set_size(pill, field, RCL_CLIENT, len);
1484 return __req_capsule_get(pill, field, RCL_CLIENT, NULL);
1486 EXPORT_SYMBOL(req_capsule_client_sized_get);
1488 void *req_capsule_server_get(struct req_capsule *pill,
1489 const struct req_msg_field *field)
1491 return __req_capsule_get(pill, field, RCL_SERVER, NULL);
1493 EXPORT_SYMBOL(req_capsule_server_get);
1495 void *req_capsule_server_swab_get(struct req_capsule *pill,
1496 const struct req_msg_field *field,
1499 return __req_capsule_get(pill, field, RCL_SERVER, swabber);
1501 EXPORT_SYMBOL(req_capsule_server_swab_get);
1504 void *req_capsule_server_sized_get(struct req_capsule *pill,
1505 const struct req_msg_field *field,
1508 req_capsule_set_size(pill, field, RCL_SERVER, len);
1509 return __req_capsule_get(pill, field, RCL_SERVER, NULL);
1511 EXPORT_SYMBOL(req_capsule_server_sized_get);
1513 const void *req_capsule_other_get(struct req_capsule *pill,
1514 const struct req_msg_field *field)
1516 return __req_capsule_get(pill, field, pill->rc_loc ^ 1, NULL);
1518 EXPORT_SYMBOL(req_capsule_other_get);
1520 void req_capsule_set_size(struct req_capsule *pill,
1521 const struct req_msg_field *field,
1522 enum req_location loc, int size)
1524 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1526 if ((size != field->rmf_size) &&
1527 (field->rmf_size != -1) &&
1528 !(field->rmf_flags & RMF_F_NO_SIZE_CHECK) &&
1530 CERROR("%s: field size mismatch %d != %d (%d)\n",
1531 field->rmf_name, size, field->rmf_size, loc);
1535 pill->rc_area[loc][__req_capsule_offset(pill, field, loc)] = size;
1537 EXPORT_SYMBOL(req_capsule_set_size);
1539 /* NB: this function doesn't correspond with req_capsule_set_size(), which
1540 * actually sets the size in pill.rc_area[loc][offset], but this function
1541 * returns the message buflen[offset], maybe we should use another name.
1543 int req_capsule_get_size(const struct req_capsule *pill,
1544 const struct req_msg_field *field,
1545 enum req_location loc)
1547 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1549 return lustre_msg_buflen(__req_msg(pill, loc),
1550 __req_capsule_offset(pill, field, loc));
1552 EXPORT_SYMBOL(req_capsule_get_size);
1554 int req_capsule_msg_size(struct req_capsule *pill, enum req_location loc)
1556 return lustre_msg_size(pill->rc_req->rq_import->imp_msg_magic,
1557 pill->rc_fmt->rf_fields[loc].nr,
1558 pill->rc_area[loc]);
1561 int req_capsule_fmt_size(__u32 magic, const struct req_format *fmt,
1562 enum req_location loc)
1566 size = lustre_msg_hdr_size(magic, fmt->rf_fields[loc].nr);
1570 for (; i < fmt->rf_fields[loc].nr; ++i)
1571 if (fmt->rf_fields[loc].d[i]->rmf_size != -1)
1572 size += size_round(fmt->rf_fields[loc].d[i]->rmf_size);
1576 #define FMT_FIELD(fmt, i, j) (fmt)->rf_fields[(i)].d[(j)]
1578 void req_capsule_extend(struct req_capsule *pill, const struct req_format *fmt)
1583 const struct req_format *old;
1585 LASSERT(pill->rc_fmt != NULL);
1586 LASSERT(__req_format_is_sane(fmt));
1590 * Sanity checking...
1592 for (i = 0; i < RCL_NR; ++i) {
1593 LASSERT(fmt->rf_fields[i].nr >= old->rf_fields[i].nr);
1594 for (j = 0; j < old->rf_fields[i].nr - 1; ++j) {
1595 LASSERT(FMT_FIELD(fmt, i, j) == FMT_FIELD(old, i, j));
1598 * Last field in old format can be shorter than in new.
1600 LASSERT(FMT_FIELD(fmt, i, j)->rmf_size >=
1601 FMT_FIELD(old, i, j)->rmf_size);
1603 /* last field should be returned to the unswabbed state */
1604 pill->rc_swabbed &= ~(__u32)(1 << j);
1607 EXPORT_SYMBOL(req_capsule_extend);
1609 int req_capsule_has_field(const struct req_capsule *pill,
1610 const struct req_msg_field *field,
1611 enum req_location loc)
1613 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1615 return field->rmf_offset[pill->rc_fmt->rf_idx][loc];
1617 EXPORT_SYMBOL(req_capsule_has_field);
1619 int req_capsule_field_present(const struct req_capsule *pill,
1620 const struct req_msg_field *field,
1621 enum req_location loc)
1625 LASSERT(loc == RCL_SERVER || loc == RCL_CLIENT);
1626 LASSERT(req_capsule_has_field(pill, field, loc));
1628 offset = __req_capsule_offset(pill, field, loc);
1629 return lustre_msg_bufcount(__req_msg(pill, loc)) > offset;
1631 EXPORT_SYMBOL(req_capsule_field_present);
1633 void req_capsule_shrink(struct req_capsule *pill,
1634 const struct req_msg_field *field,
1635 unsigned int newlen,
1636 enum req_location loc)
1638 const struct req_format *fmt;
1639 struct lustre_msg *msg;
1644 LASSERT(fmt != NULL);
1645 LASSERT(__req_format_is_sane(fmt));
1646 LASSERT(req_capsule_has_field(pill, field, loc));
1647 LASSERT(req_capsule_field_present(pill, field, loc));
1649 offset = __req_capsule_offset(pill, field, loc);
1651 msg = __req_msg(pill, loc);
1652 len = lustre_msg_buflen(msg, offset);
1653 LASSERTF(newlen <= len, "%s:%s, oldlen=%d, newlen=%d\n",
1654 fmt->rf_name, field->rmf_name, len, newlen);
1656 if (loc == RCL_CLIENT)
1657 pill->rc_req->rq_reqlen = lustre_shrink_msg(msg, offset, newlen,
1660 pill->rc_req->rq_replen = lustre_shrink_msg(msg, offset, newlen,
1663 EXPORT_SYMBOL(req_capsule_shrink);
1665 /* __REQ_LAYOUT_USER__ */