[deliverable/linux.git] / drivers / staging / lustre / lustre / obdclass / llog_swab.c

/*
 * GPL HEADER START
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 only,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License version 2 for more details (a copy is included
 * in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU General Public License
 * version 2 along with this program; If not, see
 * http://www.gnu.org/licenses/gpl-2.0.html
 *
 * GPL HEADER END
 */
/*
 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
 * Use is subject to license terms.
 *
 * Copyright (c) 2012, 2015, Intel Corporation.
 */
/*
 * This file is part of Lustre, http://www.lustre.org/
 * Lustre is a trademark of Sun Microsystems, Inc.
 *
 * lustre/obdclass/llog_swab.c
 *
 * Swabbing of llog datatypes (from disk or over the wire).
 *
 * Author: jacob berkman  <jacob@clusterfs.com>
 */

#define DEBUG_SUBSYSTEM S_LOG

#include "../include/lustre_log.h"

static void print_llogd_body(struct llogd_body *d)
{
	CDEBUG(D_OTHER, "llogd body: %p\n", d);
	CDEBUG(D_OTHER, "\tlgd_logid.lgl_oi: "DOSTID"\n",
	       POSTID(&d->lgd_logid.lgl_oi));
	CDEBUG(D_OTHER, "\tlgd_logid.lgl_ogen: %#x\n", d->lgd_logid.lgl_ogen);
	CDEBUG(D_OTHER, "\tlgd_ctxt_idx: %#x\n", d->lgd_ctxt_idx);
	CDEBUG(D_OTHER, "\tlgd_llh_flags: %#x\n", d->lgd_llh_flags);
	CDEBUG(D_OTHER, "\tlgd_index: %#x\n", d->lgd_index);
	CDEBUG(D_OTHER, "\tlgd_saved_index: %#x\n", d->lgd_saved_index);
	CDEBUG(D_OTHER, "\tlgd_len: %#x\n", d->lgd_len);
	CDEBUG(D_OTHER, "\tlgd_cur_offset: %#llx\n", d->lgd_cur_offset);
}

void lustre_swab_lu_fid(struct lu_fid *fid)
{
	__swab64s(&fid->f_seq);
	__swab32s(&fid->f_oid);
	__swab32s(&fid->f_ver);
}
EXPORT_SYMBOL(lustre_swab_lu_fid);

void lustre_swab_ost_id(struct ost_id *oid)
{
	if (fid_seq_is_mdt0(oid->oi.oi_seq)) {
		__swab64s(&oid->oi.oi_id);
		__swab64s(&oid->oi.oi_seq);
	} else {
		lustre_swab_lu_fid(&oid->oi_fid);
	}
}
EXPORT_SYMBOL(lustre_swab_ost_id);

static void lustre_swab_llog_id(struct llog_logid *log_id)
{
	__swab64s(&log_id->lgl_oi.oi.oi_id);
	__swab64s(&log_id->lgl_oi.oi.oi_seq);
	__swab32s(&log_id->lgl_ogen);
}

void lustre_swab_llogd_body(struct llogd_body *d)
{
	print_llogd_body(d);
	lustre_swab_llog_id(&d->lgd_logid);
	__swab32s(&d->lgd_ctxt_idx);
	__swab32s(&d->lgd_llh_flags);
	__swab32s(&d->lgd_index);
	__swab32s(&d->lgd_saved_index);
	__swab32s(&d->lgd_len);
	__swab64s(&d->lgd_cur_offset);
	print_llogd_body(d);
}
EXPORT_SYMBOL(lustre_swab_llogd_body);

void lustre_swab_llogd_conn_body(struct llogd_conn_body *d)
{
	__swab64s(&d->lgdc_gen.mnt_cnt);
	__swab64s(&d->lgdc_gen.conn_cnt);
	lustre_swab_llog_id(&d->lgdc_logid);
	__swab32s(&d->lgdc_ctxt_idx);
}
EXPORT_SYMBOL(lustre_swab_llogd_conn_body);

static void lustre_swab_ll_fid(struct ll_fid *fid)
{
	__swab64s(&fid->id);
	__swab32s(&fid->generation);
	__swab32s(&fid->f_type);
}

void lustre_swab_lu_seq_range(struct lu_seq_range *range)
{
	__swab64s(&range->lsr_start);
	__swab64s(&range->lsr_end);
	__swab32s(&range->lsr_index);
	__swab32s(&range->lsr_flags);
}
EXPORT_SYMBOL(lustre_swab_lu_seq_range);

void lustre_swab_llog_rec(struct llog_rec_hdr *rec)
{
	struct llog_rec_tail *tail = NULL;

	__swab32s(&rec->lrh_len);
	__swab32s(&rec->lrh_index);
	__swab32s(&rec->lrh_type);
	__swab32s(&rec->lrh_id);

	switch (rec->lrh_type) {
	case OST_SZ_REC:
	{
		struct llog_size_change_rec *lsc =
			(struct llog_size_change_rec *)rec;

		lustre_swab_ll_fid(&lsc->lsc_fid);
		__swab32s(&lsc->lsc_ioepoch);
		tail = &lsc->lsc_tail;
		break;
	}
	case MDS_UNLINK_REC:
	{
		struct llog_unlink_rec *lur = (struct llog_unlink_rec *)rec;

		__swab64s(&lur->lur_oid);
		__swab32s(&lur->lur_oseq);
		__swab32s(&lur->lur_count);
		tail = &lur->lur_tail;
		break;
	}
	case MDS_UNLINK64_REC:
	{
		struct llog_unlink64_rec *lur =
			(struct llog_unlink64_rec *)rec;

		lustre_swab_lu_fid(&lur->lur_fid);
		__swab32s(&lur->lur_count);
		tail = &lur->lur_tail;
		break;
	}
	case CHANGELOG_REC:
	{
		struct llog_changelog_rec *cr =
			(struct llog_changelog_rec *)rec;

		__swab16s(&cr->cr.cr_namelen);
		__swab16s(&cr->cr.cr_flags);
		__swab32s(&cr->cr.cr_type);
		__swab64s(&cr->cr.cr_index);
		__swab64s(&cr->cr.cr_prev);
		__swab64s(&cr->cr.cr_time);
		lustre_swab_lu_fid(&cr->cr.cr_tfid);
		lustre_swab_lu_fid(&cr->cr.cr_pfid);
		if (CHANGELOG_REC_EXTENDED(&cr->cr)) {
			struct llog_changelog_ext_rec *ext =
				(struct llog_changelog_ext_rec *)rec;

			lustre_swab_lu_fid(&ext->cr.cr_sfid);
			lustre_swab_lu_fid(&ext->cr.cr_spfid);
			tail = &ext->cr_tail;
		} else {
			tail = &cr->cr_tail;
		}
		tail = (struct llog_rec_tail *)((char *)tail +
						cr->cr.cr_namelen);
		break;
	}
	case CHANGELOG_USER_REC:
	{
		struct llog_changelog_user_rec *cur =
			(struct llog_changelog_user_rec *)rec;

		__swab32s(&cur->cur_id);
		__swab64s(&cur->cur_endrec);
		tail = &cur->cur_tail;
		break;
	}

	case HSM_AGENT_REC: {
		struct llog_agent_req_rec *arr =
			(struct llog_agent_req_rec *)rec;

		__swab32s(&arr->arr_hai.hai_len);
		__swab32s(&arr->arr_hai.hai_action);
		lustre_swab_lu_fid(&arr->arr_hai.hai_fid);
		lustre_swab_lu_fid(&arr->arr_hai.hai_dfid);
		__swab64s(&arr->arr_hai.hai_cookie);
		__swab64s(&arr->arr_hai.hai_extent.offset);
		__swab64s(&arr->arr_hai.hai_extent.length);
		__swab64s(&arr->arr_hai.hai_gid);
		/* no swabing for opaque data */
		/* hai_data[0]; */
		break;
	}

	case MDS_SETATTR64_REC:
	{
		struct llog_setattr64_rec *lsr =
			(struct llog_setattr64_rec *)rec;

		lustre_swab_ost_id(&lsr->lsr_oi);
		__swab32s(&lsr->lsr_uid);
		__swab32s(&lsr->lsr_uid_h);
		__swab32s(&lsr->lsr_gid);
		__swab32s(&lsr->lsr_gid_h);
		__swab64s(&lsr->lsr_valid);
		tail = &lsr->lsr_tail;
		break;
	}
	case OBD_CFG_REC:
		/* these are swabbed as they are consumed */
		break;
	case LLOG_HDR_MAGIC:
	{
		struct llog_log_hdr *llh = (struct llog_log_hdr *)rec;

		__swab64s(&llh->llh_timestamp);
		__swab32s(&llh->llh_count);
		__swab32s(&llh->llh_bitmap_offset);
		__swab32s(&llh->llh_flags);
		__swab32s(&llh->llh_size);
		__swab32s(&llh->llh_cat_idx);
		tail = &llh->llh_tail;
		break;
	}
	case LLOG_LOGID_MAGIC:
	{
		struct llog_logid_rec *lid = (struct llog_logid_rec *)rec;

		lustre_swab_llog_id(&lid->lid_id);
		tail = &lid->lid_tail;
		break;
	}
	case LLOG_GEN_REC:
	{
		struct llog_gen_rec *lgr = (struct llog_gen_rec *)rec;

		__swab64s(&lgr->lgr_gen.mnt_cnt);
		__swab64s(&lgr->lgr_gen.conn_cnt);
		tail = &lgr->lgr_tail;
		break;
	}
	case LLOG_PAD_MAGIC:
		break;
	default:
		CERROR("Unknown llog rec type %#x swabbing rec %p\n",
		       rec->lrh_type, rec);
	}

	if (tail) {
		__swab32s(&tail->lrt_len);
		__swab32s(&tail->lrt_index);
	}
}
EXPORT_SYMBOL(lustre_swab_llog_rec);

static void print_llog_hdr(struct llog_log_hdr *h)
{
	CDEBUG(D_OTHER, "llog header: %p\n", h);
	CDEBUG(D_OTHER, "\tllh_hdr.lrh_index: %#x\n", h->llh_hdr.lrh_index);
	CDEBUG(D_OTHER, "\tllh_hdr.lrh_len: %#x\n", h->llh_hdr.lrh_len);
	CDEBUG(D_OTHER, "\tllh_hdr.lrh_type: %#x\n", h->llh_hdr.lrh_type);
	CDEBUG(D_OTHER, "\tllh_timestamp: %#llx\n", h->llh_timestamp);
	CDEBUG(D_OTHER, "\tllh_count: %#x\n", h->llh_count);
	CDEBUG(D_OTHER, "\tllh_bitmap_offset: %#x\n", h->llh_bitmap_offset);
	CDEBUG(D_OTHER, "\tllh_flags: %#x\n", h->llh_flags);
	CDEBUG(D_OTHER, "\tllh_size: %#x\n", h->llh_size);
	CDEBUG(D_OTHER, "\tllh_cat_idx: %#x\n", h->llh_cat_idx);
	CDEBUG(D_OTHER, "\tllh_tail.lrt_index: %#x\n", h->llh_tail.lrt_index);
	CDEBUG(D_OTHER, "\tllh_tail.lrt_len: %#x\n", h->llh_tail.lrt_len);
}

void lustre_swab_llog_hdr(struct llog_log_hdr *h)
{
	print_llog_hdr(h);

	lustre_swab_llog_rec(&h->llh_hdr);

	print_llog_hdr(h);
}
EXPORT_SYMBOL(lustre_swab_llog_hdr);

static void print_lustre_cfg(struct lustre_cfg *lcfg)
{
	int i;

	if (!(libcfs_debug & D_OTHER)) /* don't loop on nothing */
		return;
	CDEBUG(D_OTHER, "lustre_cfg: %p\n", lcfg);
	CDEBUG(D_OTHER, "\tlcfg->lcfg_version: %#x\n", lcfg->lcfg_version);

	CDEBUG(D_OTHER, "\tlcfg->lcfg_command: %#x\n", lcfg->lcfg_command);
	CDEBUG(D_OTHER, "\tlcfg->lcfg_num: %#x\n", lcfg->lcfg_num);
	CDEBUG(D_OTHER, "\tlcfg->lcfg_flags: %#x\n", lcfg->lcfg_flags);
	CDEBUG(D_OTHER, "\tlcfg->lcfg_nid: %s\n", libcfs_nid2str(lcfg->lcfg_nid));

	CDEBUG(D_OTHER, "\tlcfg->lcfg_bufcount: %d\n", lcfg->lcfg_bufcount);
	if (lcfg->lcfg_bufcount < LUSTRE_CFG_MAX_BUFCOUNT)
		for (i = 0; i < lcfg->lcfg_bufcount; i++)
			CDEBUG(D_OTHER, "\tlcfg->lcfg_buflens[%d]: %d\n",
			       i, lcfg->lcfg_buflens[i]);
}

void lustre_swab_lustre_cfg(struct lustre_cfg *lcfg)
{
	int i;

	__swab32s(&lcfg->lcfg_version);

	if (lcfg->lcfg_version != LUSTRE_CFG_VERSION) {
		CERROR("not swabbing lustre_cfg version %#x (expecting %#x)\n",
		       lcfg->lcfg_version, LUSTRE_CFG_VERSION);
		return;
	}

	__swab32s(&lcfg->lcfg_command);
	__swab32s(&lcfg->lcfg_num);
	__swab32s(&lcfg->lcfg_flags);
	__swab64s(&lcfg->lcfg_nid);
	__swab32s(&lcfg->lcfg_bufcount);
	for (i = 0; i < lcfg->lcfg_bufcount && i < LUSTRE_CFG_MAX_BUFCOUNT; i++)
		__swab32s(&lcfg->lcfg_buflens[i]);

	print_lustre_cfg(lcfg);
}
EXPORT_SYMBOL(lustre_swab_lustre_cfg);

/* used only for compatibility with old on-disk cfg_marker data */
struct cfg_marker32 {
	__u32   cm_step;
	__u32   cm_flags;
	__u32   cm_vers;
	__u32   padding;
	__u32   cm_createtime;
	__u32   cm_canceltime;
	char    cm_tgtname[MTI_NAME_MAXLEN];
	char    cm_comment[MTI_NAME_MAXLEN];
};

#define MTI_NAMELEN32    (MTI_NAME_MAXLEN - \
	(sizeof(struct cfg_marker) - sizeof(struct cfg_marker32)))

void lustre_swab_cfg_marker(struct cfg_marker *marker, int swab, int size)
{
	struct cfg_marker32 *cm32 = (struct cfg_marker32 *)marker;

	if (swab) {
		__swab32s(&marker->cm_step);
		__swab32s(&marker->cm_flags);
		__swab32s(&marker->cm_vers);
	}
	if (size == sizeof(*cm32)) {
		__u32 createtime, canceltime;
		/* There was a problem with the original declaration of
		 * cfg_marker on 32-bit systems because it used time_t as
		 * a wire protocol structure, and didn't verify this in
		 * wirecheck.  We now have to convert the offsets of the
		 * later fields in order to work on 32- and 64-bit systems.
		 *
		 * Fortunately, the cm_comment field has no functional use
		 * so can be sacrificed when converting the timestamp size.
		 *
		 * Overwrite fields from the end first, so they are not
		 * clobbered, and use memmove() instead of memcpy() because
		 * the source and target buffers overlap.  bug 16771
		 */
		createtime = cm32->cm_createtime;
		canceltime = cm32->cm_canceltime;
		memmove(marker->cm_comment, cm32->cm_comment, MTI_NAMELEN32);
		marker->cm_comment[MTI_NAMELEN32 - 1] = '\0';
		memmove(marker->cm_tgtname, cm32->cm_tgtname,
			sizeof(marker->cm_tgtname));
		if (swab) {
			__swab32s(&createtime);
			__swab32s(&canceltime);
		}
		marker->cm_createtime = createtime;
		marker->cm_canceltime = canceltime;
		CDEBUG(D_CONFIG, "Find old cfg_marker(Srv32b,Clt64b) for target %s, converting\n",
		       marker->cm_tgtname);
	} else if (swab) {
		__swab64s(&marker->cm_createtime);
		__swab64s(&marker->cm_canceltime);
	}
}
EXPORT_SYMBOL(lustre_swab_cfg_marker);
Commit	Line	Data
d7e09d03 PT	1	/*
	2	* GPL HEADER START
	3	*
	4	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 only,
	8	* as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful, but
	11	* WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	* General Public License version 2 for more details (a copy is included
	14	* in the LICENSE file that accompanied this code).
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* version 2 along with this program; If not, see
6a5b99a4	18	* http://www.gnu.org/licenses/gpl-2.0.html
d7e09d03	19	*
d7e09d03 PT	20	* GPL HEADER END
	21	*/
	22	/*
	23	* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
	24	* Use is subject to license terms.
	25	*
1dc563a6	26	* Copyright (c) 2012, 2015, Intel Corporation.
d7e09d03 PT	27	*/
	28	/*
	29	* This file is part of Lustre, http://www.lustre.org/
	30	* Lustre is a trademark of Sun Microsystems, Inc.
	31	*
	32	* lustre/obdclass/llog_swab.c
	33	*
	34	* Swabbing of llog datatypes (from disk or over the wire).
	35	*
	36	* Author: jacob berkman <jacob@clusterfs.com>
	37	*/
	38
	39	#define DEBUG_SUBSYSTEM S_LOG
	40
610f7377	41	#include "../include/lustre_log.h"
d7e09d03 PT	42
	43	static void print_llogd_body(struct llogd_body *d)
	44	{
	45	CDEBUG(D_OTHER, "llogd body: %p\n", d);
	46	CDEBUG(D_OTHER, "\tlgd_logid.lgl_oi: "DOSTID"\n",
	47	POSTID(&d->lgd_logid.lgl_oi));
	48	CDEBUG(D_OTHER, "\tlgd_logid.lgl_ogen: %#x\n", d->lgd_logid.lgl_ogen);
	49	CDEBUG(D_OTHER, "\tlgd_ctxt_idx: %#x\n", d->lgd_ctxt_idx);
	50	CDEBUG(D_OTHER, "\tlgd_llh_flags: %#x\n", d->lgd_llh_flags);
	51	CDEBUG(D_OTHER, "\tlgd_index: %#x\n", d->lgd_index);
	52	CDEBUG(D_OTHER, "\tlgd_saved_index: %#x\n", d->lgd_saved_index);
	53	CDEBUG(D_OTHER, "\tlgd_len: %#x\n", d->lgd_len);
55f5a824	54	CDEBUG(D_OTHER, "\tlgd_cur_offset: %#llx\n", d->lgd_cur_offset);
d7e09d03 PT	55	}
	56
	57	void lustre_swab_lu_fid(struct lu_fid *fid)
	58	{
ca4e8296 TW	59	__swab64s(&fid->f_seq);
	60	__swab32s(&fid->f_oid);
	61	__swab32s(&fid->f_ver);
d7e09d03 PT	62	}
	63	EXPORT_SYMBOL(lustre_swab_lu_fid);
	64
	65	void lustre_swab_ost_id(struct ost_id *oid)
	66	{
	67	if (fid_seq_is_mdt0(oid->oi.oi_seq)) {
	68	__swab64s(&oid->oi.oi_id);
	69	__swab64s(&oid->oi.oi_seq);
	70	} else {
	71	lustre_swab_lu_fid(&oid->oi_fid);
	72	}
	73	}
	74	EXPORT_SYMBOL(lustre_swab_ost_id);
	75
38a70c9b	76	static void lustre_swab_llog_id(struct llog_logid *log_id)
ff8c39b2	77	{
	78	__swab64s(&log_id->lgl_oi.oi.oi_id);
	79	__swab64s(&log_id->lgl_oi.oi.oi_seq);
ca4e8296	80	__swab32s(&log_id->lgl_ogen);
ff8c39b2	81	}
ff8c39b2	82
ca4e8296	83	void lustre_swab_llogd_body(struct llogd_body *d)
d7e09d03	84	{
d7e09d03	85	print_llogd_body(d);
ff8c39b2	86	lustre_swab_llog_id(&d->lgd_logid);
ca4e8296 TW	87	__swab32s(&d->lgd_ctxt_idx);
	88	__swab32s(&d->lgd_llh_flags);
	89	__swab32s(&d->lgd_index);
	90	__swab32s(&d->lgd_saved_index);
	91	__swab32s(&d->lgd_len);
	92	__swab64s(&d->lgd_cur_offset);
d7e09d03	93	print_llogd_body(d);
d7e09d03 PT	94	}
	95	EXPORT_SYMBOL(lustre_swab_llogd_body);
	96
ca4e8296	97	void lustre_swab_llogd_conn_body(struct llogd_conn_body *d)
d7e09d03	98	{
ca4e8296 TW	99	__swab64s(&d->lgdc_gen.mnt_cnt);
ca4e8296 TW	100	__swab64s(&d->lgdc_gen.conn_cnt);
ff8c39b2	101	lustre_swab_llog_id(&d->lgdc_logid);
ca4e8296	102	__swab32s(&d->lgdc_ctxt_idx);
d7e09d03 PT	103	}
	104	EXPORT_SYMBOL(lustre_swab_llogd_conn_body);
	105
38a70c9b	106	static void lustre_swab_ll_fid(struct ll_fid *fid)
d7e09d03	107	{
ca4e8296 TW	108	__swab64s(&fid->id);
	109	__swab32s(&fid->generation);
	110	__swab32s(&fid->f_type);
d7e09d03	111	}
d7e09d03 PT	112
	113	void lustre_swab_lu_seq_range(struct lu_seq_range *range)
	114	{
ca4e8296 TW	115	__swab64s(&range->lsr_start);
	116	__swab64s(&range->lsr_end);
	117	__swab32s(&range->lsr_index);
	118	__swab32s(&range->lsr_flags);
d7e09d03 PT	119	}
	120	EXPORT_SYMBOL(lustre_swab_lu_seq_range);
	121
	122	void lustre_swab_llog_rec(struct llog_rec_hdr *rec)
	123	{
	124	struct llog_rec_tail *tail = NULL;
	125
	126	__swab32s(&rec->lrh_len);
	127	__swab32s(&rec->lrh_index);
	128	__swab32s(&rec->lrh_type);
	129	__swab32s(&rec->lrh_id);
	130
	131	switch (rec->lrh_type) {
	132	case OST_SZ_REC:
	133	{
	134	struct llog_size_change_rec *lsc =
	135	(struct llog_size_change_rec *)rec;
	136
	137	lustre_swab_ll_fid(&lsc->lsc_fid);
	138	__swab32s(&lsc->lsc_ioepoch);
	139	tail = &lsc->lsc_tail;
	140	break;
	141	}
	142	case MDS_UNLINK_REC:
	143	{
	144	struct llog_unlink_rec lur = (struct llog_unlink_rec )rec;
	145
	146	__swab64s(&lur->lur_oid);
	147	__swab32s(&lur->lur_oseq);
	148	__swab32s(&lur->lur_count);
	149	tail = &lur->lur_tail;
	150	break;
	151	}
	152	case MDS_UNLINK64_REC:
	153	{
	154	struct llog_unlink64_rec *lur =
	155	(struct llog_unlink64_rec *)rec;
	156
	157	lustre_swab_lu_fid(&lur->lur_fid);
	158	__swab32s(&lur->lur_count);
	159	tail = &lur->lur_tail;
	160	break;
	161	}
	162	case CHANGELOG_REC:
	163	{
dbab2d85 HD	164	struct llog_changelog_rec *cr =
dbab2d85 HD	165	(struct llog_changelog_rec *)rec;
d7e09d03 PT	166
	167	__swab16s(&cr->cr.cr_namelen);
	168	__swab16s(&cr->cr.cr_flags);
	169	__swab32s(&cr->cr.cr_type);
	170	__swab64s(&cr->cr.cr_index);
	171	__swab64s(&cr->cr.cr_prev);
	172	__swab64s(&cr->cr.cr_time);
	173	lustre_swab_lu_fid(&cr->cr.cr_tfid);
	174	lustre_swab_lu_fid(&cr->cr.cr_pfid);
	175	if (CHANGELOG_REC_EXTENDED(&cr->cr)) {
	176	struct llog_changelog_ext_rec *ext =
	177	(struct llog_changelog_ext_rec *)rec;
	178
	179	lustre_swab_lu_fid(&ext->cr.cr_sfid);
	180	lustre_swab_lu_fid(&ext->cr.cr_spfid);
	181	tail = &ext->cr_tail;
	182	} else {
	183	tail = &cr->cr_tail;
	184	}
dbab2d85 HD	185	tail = (struct llog_rec_tail )((char )tail +
dbab2d85 HD	186	cr->cr.cr_namelen);
d7e09d03 PT	187	break;
	188	}
	189	case CHANGELOG_USER_REC:
	190	{
	191	struct llog_changelog_user_rec *cur =
ca4e8296	192	(struct llog_changelog_user_rec *)rec;
d7e09d03 PT	193
	194	__swab32s(&cur->cur_id);
	195	__swab64s(&cur->cur_endrec);
	196	tail = &cur->cur_tail;
	197	break;
	198	}
	199
99a92265	200	case HSM_AGENT_REC: {
	201	struct llog_agent_req_rec *arr =
	202	(struct llog_agent_req_rec *)rec;
	203
	204	__swab32s(&arr->arr_hai.hai_len);
	205	__swab32s(&arr->arr_hai.hai_action);
	206	lustre_swab_lu_fid(&arr->arr_hai.hai_fid);
	207	lustre_swab_lu_fid(&arr->arr_hai.hai_dfid);
	208	__swab64s(&arr->arr_hai.hai_cookie);
	209	__swab64s(&arr->arr_hai.hai_extent.offset);
	210	__swab64s(&arr->arr_hai.hai_extent.length);
	211	__swab64s(&arr->arr_hai.hai_gid);
	212	/* no swabing for opaque data */
	213	/* hai_data[0]; */
	214	break;
	215	}
	216
d7e09d03 PT	217	case MDS_SETATTR64_REC:
	218	{
	219	struct llog_setattr64_rec *lsr =
	220	(struct llog_setattr64_rec *)rec;
	221
	222	lustre_swab_ost_id(&lsr->lsr_oi);
	223	__swab32s(&lsr->lsr_uid);
	224	__swab32s(&lsr->lsr_uid_h);
	225	__swab32s(&lsr->lsr_gid);
	226	__swab32s(&lsr->lsr_gid_h);
f7aafa7c	227	__swab64s(&lsr->lsr_valid);
d7e09d03 PT	228	tail = &lsr->lsr_tail;
	229	break;
	230	}
	231	case OBD_CFG_REC:
	232	/* these are swabbed as they are consumed */
	233	break;
	234	case LLOG_HDR_MAGIC:
	235	{
	236	struct llog_log_hdr llh = (struct llog_log_hdr )rec;
	237
	238	__swab64s(&llh->llh_timestamp);
	239	__swab32s(&llh->llh_count);
	240	__swab32s(&llh->llh_bitmap_offset);
	241	__swab32s(&llh->llh_flags);
	242	__swab32s(&llh->llh_size);
	243	__swab32s(&llh->llh_cat_idx);
	244	tail = &llh->llh_tail;
	245	break;
	246	}
	247	case LLOG_LOGID_MAGIC:
	248	{
	249	struct llog_logid_rec lid = (struct llog_logid_rec )rec;
	250
ff8c39b2	251	lustre_swab_llog_id(&lid->lid_id);
d7e09d03 PT	252	tail = &lid->lid_tail;
	253	break;
	254	}
	255	case LLOG_GEN_REC:
	256	{
	257	struct llog_gen_rec lgr = (struct llog_gen_rec )rec;
	258
	259	__swab64s(&lgr->lgr_gen.mnt_cnt);
	260	__swab64s(&lgr->lgr_gen.conn_cnt);
	261	tail = &lgr->lgr_tail;
	262	break;
	263	}
	264	case LLOG_PAD_MAGIC:
	265	break;
	266	default:
	267	CERROR("Unknown llog rec type %#x swabbing rec %p\n",
	268	rec->lrh_type, rec);
	269	}
	270
	271	if (tail) {
	272	__swab32s(&tail->lrt_len);
	273	__swab32s(&tail->lrt_index);
	274	}
	275	}
	276	EXPORT_SYMBOL(lustre_swab_llog_rec);
	277
	278	static void print_llog_hdr(struct llog_log_hdr *h)
	279	{
	280	CDEBUG(D_OTHER, "llog header: %p\n", h);
	281	CDEBUG(D_OTHER, "\tllh_hdr.lrh_index: %#x\n", h->llh_hdr.lrh_index);
	282	CDEBUG(D_OTHER, "\tllh_hdr.lrh_len: %#x\n", h->llh_hdr.lrh_len);
	283	CDEBUG(D_OTHER, "\tllh_hdr.lrh_type: %#x\n", h->llh_hdr.lrh_type);
55f5a824	284	CDEBUG(D_OTHER, "\tllh_timestamp: %#llx\n", h->llh_timestamp);
d7e09d03 PT	285	CDEBUG(D_OTHER, "\tllh_count: %#x\n", h->llh_count);
	286	CDEBUG(D_OTHER, "\tllh_bitmap_offset: %#x\n", h->llh_bitmap_offset);
	287	CDEBUG(D_OTHER, "\tllh_flags: %#x\n", h->llh_flags);
	288	CDEBUG(D_OTHER, "\tllh_size: %#x\n", h->llh_size);
	289	CDEBUG(D_OTHER, "\tllh_cat_idx: %#x\n", h->llh_cat_idx);
	290	CDEBUG(D_OTHER, "\tllh_tail.lrt_index: %#x\n", h->llh_tail.lrt_index);
	291	CDEBUG(D_OTHER, "\tllh_tail.lrt_len: %#x\n", h->llh_tail.lrt_len);
	292	}
	293
ca4e8296	294	void lustre_swab_llog_hdr(struct llog_log_hdr *h)
d7e09d03	295	{
d7e09d03 PT	296	print_llog_hdr(h);
	297
	298	lustre_swab_llog_rec(&h->llh_hdr);
	299
	300	print_llog_hdr(h);
d7e09d03 PT	301	}
	302	EXPORT_SYMBOL(lustre_swab_llog_hdr);
	303
	304	static void print_lustre_cfg(struct lustre_cfg *lcfg)
	305	{
	306	int i;
d7e09d03 PT	307
	308	if (!(libcfs_debug & D_OTHER)) /* don't loop on nothing */
	309	return;
	310	CDEBUG(D_OTHER, "lustre_cfg: %p\n", lcfg);
	311	CDEBUG(D_OTHER, "\tlcfg->lcfg_version: %#x\n", lcfg->lcfg_version);
	312
	313	CDEBUG(D_OTHER, "\tlcfg->lcfg_command: %#x\n", lcfg->lcfg_command);
	314	CDEBUG(D_OTHER, "\tlcfg->lcfg_num: %#x\n", lcfg->lcfg_num);
	315	CDEBUG(D_OTHER, "\tlcfg->lcfg_flags: %#x\n", lcfg->lcfg_flags);
	316	CDEBUG(D_OTHER, "\tlcfg->lcfg_nid: %s\n", libcfs_nid2str(lcfg->lcfg_nid));
	317
	318	CDEBUG(D_OTHER, "\tlcfg->lcfg_bufcount: %d\n", lcfg->lcfg_bufcount);
	319	if (lcfg->lcfg_bufcount < LUSTRE_CFG_MAX_BUFCOUNT)
	320	for (i = 0; i < lcfg->lcfg_bufcount; i++)
	321	CDEBUG(D_OTHER, "\tlcfg->lcfg_buflens[%d]: %d\n",
	322	i, lcfg->lcfg_buflens[i]);
d7e09d03 PT	323	}
	324
	325	void lustre_swab_lustre_cfg(struct lustre_cfg *lcfg)
	326	{
	327	int i;
d7e09d03 PT	328
	329	__swab32s(&lcfg->lcfg_version);
	330
	331	if (lcfg->lcfg_version != LUSTRE_CFG_VERSION) {
	332	CERROR("not swabbing lustre_cfg version %#x (expecting %#x)\n",
	333	lcfg->lcfg_version, LUSTRE_CFG_VERSION);
d7e09d03 PT	334	return;
	335	}
	336
	337	__swab32s(&lcfg->lcfg_command);
	338	__swab32s(&lcfg->lcfg_num);
	339	__swab32s(&lcfg->lcfg_flags);
	340	__swab64s(&lcfg->lcfg_nid);
	341	__swab32s(&lcfg->lcfg_bufcount);
	342	for (i = 0; i < lcfg->lcfg_bufcount && i < LUSTRE_CFG_MAX_BUFCOUNT; i++)
	343	__swab32s(&lcfg->lcfg_buflens[i]);
	344
	345	print_lustre_cfg(lcfg);
d7e09d03 PT	346	}
	347	EXPORT_SYMBOL(lustre_swab_lustre_cfg);
	348
	349	/* used only for compatibility with old on-disk cfg_marker data */
	350	struct cfg_marker32 {
	351	__u32 cm_step;
	352	__u32 cm_flags;
	353	__u32 cm_vers;
	354	__u32 padding;
	355	__u32 cm_createtime;
	356	__u32 cm_canceltime;
	357	char cm_tgtname[MTI_NAME_MAXLEN];
	358	char cm_comment[MTI_NAME_MAXLEN];
	359	};
	360
	361	#define MTI_NAMELEN32 (MTI_NAME_MAXLEN - \
	362	(sizeof(struct cfg_marker) - sizeof(struct cfg_marker32)))
	363
	364	void lustre_swab_cfg_marker(struct cfg_marker *marker, int swab, int size)
	365	{
ca4e8296	366	struct cfg_marker32 cm32 = (struct cfg_marker32 )marker;
d7e09d03 PT	367
	368	if (swab) {
	369	__swab32s(&marker->cm_step);
	370	__swab32s(&marker->cm_flags);
	371	__swab32s(&marker->cm_vers);
	372	}
	373	if (size == sizeof(*cm32)) {
	374	__u32 createtime, canceltime;
	375	/* There was a problem with the original declaration of
	376	* cfg_marker on 32-bit systems because it used time_t as
	377	* a wire protocol structure, and didn't verify this in
	378	* wirecheck. We now have to convert the offsets of the
	379	* later fields in order to work on 32- and 64-bit systems.
	380	*
	381	* Fortunately, the cm_comment field has no functional use
	382	* so can be sacrificed when converting the timestamp size.
	383	*
	384	* Overwrite fields from the end first, so they are not
	385	* clobbered, and use memmove() instead of memcpy() because
6ba59179 OD	386	* the source and target buffers overlap. bug 16771
6ba59179 OD	387	*/
d7e09d03 PT	388	createtime = cm32->cm_createtime;
	389	canceltime = cm32->cm_canceltime;
	390	memmove(marker->cm_comment, cm32->cm_comment, MTI_NAMELEN32);
	391	marker->cm_comment[MTI_NAMELEN32 - 1] = '\0';
	392	memmove(marker->cm_tgtname, cm32->cm_tgtname,
	393	sizeof(marker->cm_tgtname));
	394	if (swab) {
	395	__swab32s(&createtime);
	396	__swab32s(&canceltime);
	397	}
	398	marker->cm_createtime = createtime;
	399	marker->cm_canceltime = canceltime;
2d00bd17	400	CDEBUG(D_CONFIG, "Find old cfg_marker(Srv32b,Clt64b) for target %s, converting\n",
d7e09d03 PT	401	marker->cm_tgtname);
	402	} else if (swab) {
	403	__swab64s(&marker->cm_createtime);
	404	__swab64s(&marker->cm_canceltime);
	405	}
d7e09d03 PT	406	}
d7e09d03 PT	407	EXPORT_SYMBOL(lustre_swab_cfg_marker);