[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.sun.com/software/products/lustre/docs/GPLv2.pdf
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 * 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);
		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);
	return;
}
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
	18	* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
	19	*
	20	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
	21	* CA 95054 USA or visit www.sun.com if you need additional information or
	22	* have any questions.
	23	*
	24	* GPL HEADER END
	25	*/
	26	/*
	27	* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
	28	* Use is subject to license terms.
	29	*
1dc563a6	30	* Copyright (c) 2012, 2015, Intel Corporation.
d7e09d03 PT	31	*/
	32	/*
	33	* This file is part of Lustre, http://www.lustre.org/
	34	* Lustre is a trademark of Sun Microsystems, Inc.
	35	*
	36	* lustre/obdclass/llog_swab.c
	37	*
	38	* Swabbing of llog datatypes (from disk or over the wire).
	39	*
	40	* Author: jacob berkman <jacob@clusterfs.com>
	41	*/
	42
	43	#define DEBUG_SUBSYSTEM S_LOG
	44
610f7377	45	#include "../include/lustre_log.h"
d7e09d03 PT	46
	47	static void print_llogd_body(struct llogd_body *d)
	48	{
	49	CDEBUG(D_OTHER, "llogd body: %p\n", d);
	50	CDEBUG(D_OTHER, "\tlgd_logid.lgl_oi: "DOSTID"\n",
	51	POSTID(&d->lgd_logid.lgl_oi));
	52	CDEBUG(D_OTHER, "\tlgd_logid.lgl_ogen: %#x\n", d->lgd_logid.lgl_ogen);
	53	CDEBUG(D_OTHER, "\tlgd_ctxt_idx: %#x\n", d->lgd_ctxt_idx);
	54	CDEBUG(D_OTHER, "\tlgd_llh_flags: %#x\n", d->lgd_llh_flags);
	55	CDEBUG(D_OTHER, "\tlgd_index: %#x\n", d->lgd_index);
	56	CDEBUG(D_OTHER, "\tlgd_saved_index: %#x\n", d->lgd_saved_index);
	57	CDEBUG(D_OTHER, "\tlgd_len: %#x\n", d->lgd_len);
55f5a824	58	CDEBUG(D_OTHER, "\tlgd_cur_offset: %#llx\n", d->lgd_cur_offset);
d7e09d03 PT	59	}
	60
	61	void lustre_swab_lu_fid(struct lu_fid *fid)
	62	{
ca4e8296 TW	63	__swab64s(&fid->f_seq);
	64	__swab32s(&fid->f_oid);
	65	__swab32s(&fid->f_ver);
d7e09d03 PT	66	}
	67	EXPORT_SYMBOL(lustre_swab_lu_fid);
	68
	69	void lustre_swab_ost_id(struct ost_id *oid)
	70	{
	71	if (fid_seq_is_mdt0(oid->oi.oi_seq)) {
	72	__swab64s(&oid->oi.oi_id);
	73	__swab64s(&oid->oi.oi_seq);
	74	} else {
	75	lustre_swab_lu_fid(&oid->oi_fid);
	76	}
	77	}
	78	EXPORT_SYMBOL(lustre_swab_ost_id);
	79
38a70c9b	80	static void lustre_swab_llog_id(struct llog_logid *log_id)
ff8c39b2	81	{
	82	__swab64s(&log_id->lgl_oi.oi.oi_id);
	83	__swab64s(&log_id->lgl_oi.oi.oi_seq);
ca4e8296	84	__swab32s(&log_id->lgl_ogen);
ff8c39b2	85	}
ff8c39b2	86
ca4e8296	87	void lustre_swab_llogd_body(struct llogd_body *d)
d7e09d03	88	{
d7e09d03	89	print_llogd_body(d);
ff8c39b2	90	lustre_swab_llog_id(&d->lgd_logid);
ca4e8296 TW	91	__swab32s(&d->lgd_ctxt_idx);
	92	__swab32s(&d->lgd_llh_flags);
	93	__swab32s(&d->lgd_index);
	94	__swab32s(&d->lgd_saved_index);
	95	__swab32s(&d->lgd_len);
	96	__swab64s(&d->lgd_cur_offset);
d7e09d03	97	print_llogd_body(d);
d7e09d03 PT	98	}
	99	EXPORT_SYMBOL(lustre_swab_llogd_body);
	100
ca4e8296	101	void lustre_swab_llogd_conn_body(struct llogd_conn_body *d)
d7e09d03	102	{
ca4e8296 TW	103	__swab64s(&d->lgdc_gen.mnt_cnt);
ca4e8296 TW	104	__swab64s(&d->lgdc_gen.conn_cnt);
ff8c39b2	105	lustre_swab_llog_id(&d->lgdc_logid);
ca4e8296	106	__swab32s(&d->lgdc_ctxt_idx);
d7e09d03 PT	107	}
	108	EXPORT_SYMBOL(lustre_swab_llogd_conn_body);
	109
38a70c9b	110	static void lustre_swab_ll_fid(struct ll_fid *fid)
d7e09d03	111	{
ca4e8296 TW	112	__swab64s(&fid->id);
	113	__swab32s(&fid->generation);
	114	__swab32s(&fid->f_type);
d7e09d03	115	}
d7e09d03 PT	116
	117	void lustre_swab_lu_seq_range(struct lu_seq_range *range)
	118	{
ca4e8296 TW	119	__swab64s(&range->lsr_start);
	120	__swab64s(&range->lsr_end);
	121	__swab32s(&range->lsr_index);
	122	__swab32s(&range->lsr_flags);
d7e09d03 PT	123	}
	124	EXPORT_SYMBOL(lustre_swab_lu_seq_range);
	125
	126	void lustre_swab_llog_rec(struct llog_rec_hdr *rec)
	127	{
	128	struct llog_rec_tail *tail = NULL;
	129
	130	__swab32s(&rec->lrh_len);
	131	__swab32s(&rec->lrh_index);
	132	__swab32s(&rec->lrh_type);
	133	__swab32s(&rec->lrh_id);
	134
	135	switch (rec->lrh_type) {
	136	case OST_SZ_REC:
	137	{
	138	struct llog_size_change_rec *lsc =
	139	(struct llog_size_change_rec *)rec;
	140
	141	lustre_swab_ll_fid(&lsc->lsc_fid);
	142	__swab32s(&lsc->lsc_ioepoch);
	143	tail = &lsc->lsc_tail;
	144	break;
	145	}
	146	case MDS_UNLINK_REC:
	147	{
	148	struct llog_unlink_rec lur = (struct llog_unlink_rec )rec;
	149
	150	__swab64s(&lur->lur_oid);
	151	__swab32s(&lur->lur_oseq);
	152	__swab32s(&lur->lur_count);
	153	tail = &lur->lur_tail;
	154	break;
	155	}
	156	case MDS_UNLINK64_REC:
	157	{
	158	struct llog_unlink64_rec *lur =
	159	(struct llog_unlink64_rec *)rec;
	160
	161	lustre_swab_lu_fid(&lur->lur_fid);
	162	__swab32s(&lur->lur_count);
	163	tail = &lur->lur_tail;
	164	break;
	165	}
	166	case CHANGELOG_REC:
	167	{
dbab2d85 HD	168	struct llog_changelog_rec *cr =
dbab2d85 HD	169	(struct llog_changelog_rec *)rec;
d7e09d03 PT	170
	171	__swab16s(&cr->cr.cr_namelen);
	172	__swab16s(&cr->cr.cr_flags);
	173	__swab32s(&cr->cr.cr_type);
	174	__swab64s(&cr->cr.cr_index);
	175	__swab64s(&cr->cr.cr_prev);
	176	__swab64s(&cr->cr.cr_time);
	177	lustre_swab_lu_fid(&cr->cr.cr_tfid);
	178	lustre_swab_lu_fid(&cr->cr.cr_pfid);
	179	if (CHANGELOG_REC_EXTENDED(&cr->cr)) {
	180	struct llog_changelog_ext_rec *ext =
	181	(struct llog_changelog_ext_rec *)rec;
	182
	183	lustre_swab_lu_fid(&ext->cr.cr_sfid);
	184	lustre_swab_lu_fid(&ext->cr.cr_spfid);
	185	tail = &ext->cr_tail;
	186	} else {
	187	tail = &cr->cr_tail;
	188	}
dbab2d85 HD	189	tail = (struct llog_rec_tail )((char )tail +
dbab2d85 HD	190	cr->cr.cr_namelen);
d7e09d03 PT	191	break;
	192	}
	193	case CHANGELOG_USER_REC:
	194	{
	195	struct llog_changelog_user_rec *cur =
ca4e8296	196	(struct llog_changelog_user_rec *)rec;
d7e09d03 PT	197
	198	__swab32s(&cur->cur_id);
	199	__swab64s(&cur->cur_endrec);
	200	tail = &cur->cur_tail;
	201	break;
	202	}
	203
99a92265	204	case HSM_AGENT_REC: {
	205	struct llog_agent_req_rec *arr =
	206	(struct llog_agent_req_rec *)rec;
	207
	208	__swab32s(&arr->arr_hai.hai_len);
	209	__swab32s(&arr->arr_hai.hai_action);
	210	lustre_swab_lu_fid(&arr->arr_hai.hai_fid);
	211	lustre_swab_lu_fid(&arr->arr_hai.hai_dfid);
	212	__swab64s(&arr->arr_hai.hai_cookie);
	213	__swab64s(&arr->arr_hai.hai_extent.offset);
	214	__swab64s(&arr->arr_hai.hai_extent.length);
	215	__swab64s(&arr->arr_hai.hai_gid);
	216	/* no swabing for opaque data */
	217	/* hai_data[0]; */
	218	break;
	219	}
	220
d7e09d03 PT	221	case MDS_SETATTR64_REC:
	222	{
	223	struct llog_setattr64_rec *lsr =
	224	(struct llog_setattr64_rec *)rec;
	225
	226	lustre_swab_ost_id(&lsr->lsr_oi);
	227	__swab32s(&lsr->lsr_uid);
	228	__swab32s(&lsr->lsr_uid_h);
	229	__swab32s(&lsr->lsr_gid);
	230	__swab32s(&lsr->lsr_gid_h);
	231	tail = &lsr->lsr_tail;
	232	break;
	233	}
	234	case OBD_CFG_REC:
	235	/* these are swabbed as they are consumed */
	236	break;
	237	case LLOG_HDR_MAGIC:
	238	{
	239	struct llog_log_hdr llh = (struct llog_log_hdr )rec;
	240
	241	__swab64s(&llh->llh_timestamp);
	242	__swab32s(&llh->llh_count);
	243	__swab32s(&llh->llh_bitmap_offset);
	244	__swab32s(&llh->llh_flags);
	245	__swab32s(&llh->llh_size);
	246	__swab32s(&llh->llh_cat_idx);
	247	tail = &llh->llh_tail;
	248	break;
	249	}
	250	case LLOG_LOGID_MAGIC:
	251	{
	252	struct llog_logid_rec lid = (struct llog_logid_rec )rec;
	253
ff8c39b2	254	lustre_swab_llog_id(&lid->lid_id);
d7e09d03 PT	255	tail = &lid->lid_tail;
	256	break;
	257	}
	258	case LLOG_GEN_REC:
	259	{
	260	struct llog_gen_rec lgr = (struct llog_gen_rec )rec;
	261
	262	__swab64s(&lgr->lgr_gen.mnt_cnt);
	263	__swab64s(&lgr->lgr_gen.conn_cnt);
	264	tail = &lgr->lgr_tail;
	265	break;
	266	}
	267	case LLOG_PAD_MAGIC:
	268	break;
	269	default:
	270	CERROR("Unknown llog rec type %#x swabbing rec %p\n",
	271	rec->lrh_type, rec);
	272	}
	273
	274	if (tail) {
	275	__swab32s(&tail->lrt_len);
	276	__swab32s(&tail->lrt_index);
	277	}
	278	}
	279	EXPORT_SYMBOL(lustre_swab_llog_rec);
	280
	281	static void print_llog_hdr(struct llog_log_hdr *h)
	282	{
	283	CDEBUG(D_OTHER, "llog header: %p\n", h);
	284	CDEBUG(D_OTHER, "\tllh_hdr.lrh_index: %#x\n", h->llh_hdr.lrh_index);
	285	CDEBUG(D_OTHER, "\tllh_hdr.lrh_len: %#x\n", h->llh_hdr.lrh_len);
	286	CDEBUG(D_OTHER, "\tllh_hdr.lrh_type: %#x\n", h->llh_hdr.lrh_type);
55f5a824	287	CDEBUG(D_OTHER, "\tllh_timestamp: %#llx\n", h->llh_timestamp);
d7e09d03 PT	288	CDEBUG(D_OTHER, "\tllh_count: %#x\n", h->llh_count);
	289	CDEBUG(D_OTHER, "\tllh_bitmap_offset: %#x\n", h->llh_bitmap_offset);
	290	CDEBUG(D_OTHER, "\tllh_flags: %#x\n", h->llh_flags);
	291	CDEBUG(D_OTHER, "\tllh_size: %#x\n", h->llh_size);
	292	CDEBUG(D_OTHER, "\tllh_cat_idx: %#x\n", h->llh_cat_idx);
	293	CDEBUG(D_OTHER, "\tllh_tail.lrt_index: %#x\n", h->llh_tail.lrt_index);
	294	CDEBUG(D_OTHER, "\tllh_tail.lrt_len: %#x\n", h->llh_tail.lrt_len);
	295	}
	296
ca4e8296	297	void lustre_swab_llog_hdr(struct llog_log_hdr *h)
d7e09d03	298	{
d7e09d03 PT	299	print_llog_hdr(h);
	300
	301	lustre_swab_llog_rec(&h->llh_hdr);
	302
	303	print_llog_hdr(h);
d7e09d03 PT	304	}
	305	EXPORT_SYMBOL(lustre_swab_llog_hdr);
	306
	307	static void print_lustre_cfg(struct lustre_cfg *lcfg)
	308	{
	309	int i;
d7e09d03 PT	310
	311	if (!(libcfs_debug & D_OTHER)) /* don't loop on nothing */
	312	return;
	313	CDEBUG(D_OTHER, "lustre_cfg: %p\n", lcfg);
	314	CDEBUG(D_OTHER, "\tlcfg->lcfg_version: %#x\n", lcfg->lcfg_version);
	315
	316	CDEBUG(D_OTHER, "\tlcfg->lcfg_command: %#x\n", lcfg->lcfg_command);
	317	CDEBUG(D_OTHER, "\tlcfg->lcfg_num: %#x\n", lcfg->lcfg_num);
	318	CDEBUG(D_OTHER, "\tlcfg->lcfg_flags: %#x\n", lcfg->lcfg_flags);
	319	CDEBUG(D_OTHER, "\tlcfg->lcfg_nid: %s\n", libcfs_nid2str(lcfg->lcfg_nid));
	320
	321	CDEBUG(D_OTHER, "\tlcfg->lcfg_bufcount: %d\n", lcfg->lcfg_bufcount);
	322	if (lcfg->lcfg_bufcount < LUSTRE_CFG_MAX_BUFCOUNT)
	323	for (i = 0; i < lcfg->lcfg_bufcount; i++)
	324	CDEBUG(D_OTHER, "\tlcfg->lcfg_buflens[%d]: %d\n",
	325	i, lcfg->lcfg_buflens[i]);
d7e09d03 PT	326	}
	327
	328	void lustre_swab_lustre_cfg(struct lustre_cfg *lcfg)
	329	{
	330	int i;
d7e09d03 PT	331
	332	__swab32s(&lcfg->lcfg_version);
	333
	334	if (lcfg->lcfg_version != LUSTRE_CFG_VERSION) {
	335	CERROR("not swabbing lustre_cfg version %#x (expecting %#x)\n",
	336	lcfg->lcfg_version, LUSTRE_CFG_VERSION);
d7e09d03 PT	337	return;
	338	}
	339
	340	__swab32s(&lcfg->lcfg_command);
	341	__swab32s(&lcfg->lcfg_num);
	342	__swab32s(&lcfg->lcfg_flags);
	343	__swab64s(&lcfg->lcfg_nid);
	344	__swab32s(&lcfg->lcfg_bufcount);
	345	for (i = 0; i < lcfg->lcfg_bufcount && i < LUSTRE_CFG_MAX_BUFCOUNT; i++)
	346	__swab32s(&lcfg->lcfg_buflens[i]);
	347
	348	print_lustre_cfg(lcfg);
d7e09d03 PT	349	return;
	350	}
	351	EXPORT_SYMBOL(lustre_swab_lustre_cfg);
	352
	353	/* used only for compatibility with old on-disk cfg_marker data */
	354	struct cfg_marker32 {
	355	__u32 cm_step;
	356	__u32 cm_flags;
	357	__u32 cm_vers;
	358	__u32 padding;
	359	__u32 cm_createtime;
	360	__u32 cm_canceltime;
	361	char cm_tgtname[MTI_NAME_MAXLEN];
	362	char cm_comment[MTI_NAME_MAXLEN];
	363	};
	364
	365	#define MTI_NAMELEN32 (MTI_NAME_MAXLEN - \
	366	(sizeof(struct cfg_marker) - sizeof(struct cfg_marker32)))
	367
	368	void lustre_swab_cfg_marker(struct cfg_marker *marker, int swab, int size)
	369	{
ca4e8296	370	struct cfg_marker32 cm32 = (struct cfg_marker32 )marker;
d7e09d03 PT	371
	372	if (swab) {
	373	__swab32s(&marker->cm_step);
	374	__swab32s(&marker->cm_flags);
	375	__swab32s(&marker->cm_vers);
	376	}
	377	if (size == sizeof(*cm32)) {
	378	__u32 createtime, canceltime;
	379	/* There was a problem with the original declaration of
	380	* cfg_marker on 32-bit systems because it used time_t as
	381	* a wire protocol structure, and didn't verify this in
	382	* wirecheck. We now have to convert the offsets of the
	383	* later fields in order to work on 32- and 64-bit systems.
	384	*
	385	* Fortunately, the cm_comment field has no functional use
	386	* so can be sacrificed when converting the timestamp size.
	387	*
	388	* Overwrite fields from the end first, so they are not
	389	* clobbered, and use memmove() instead of memcpy() because
	390	* the source and target buffers overlap. bug 16771 */
	391	createtime = cm32->cm_createtime;
	392	canceltime = cm32->cm_canceltime;
	393	memmove(marker->cm_comment, cm32->cm_comment, MTI_NAMELEN32);
	394	marker->cm_comment[MTI_NAMELEN32 - 1] = '\0';
	395	memmove(marker->cm_tgtname, cm32->cm_tgtname,
	396	sizeof(marker->cm_tgtname));
	397	if (swab) {
	398	__swab32s(&createtime);
	399	__swab32s(&canceltime);
	400	}
	401	marker->cm_createtime = createtime;
	402	marker->cm_canceltime = canceltime;
2d00bd17	403	CDEBUG(D_CONFIG, "Find old cfg_marker(Srv32b,Clt64b) for target %s, converting\n",
d7e09d03 PT	404	marker->cm_tgtname);
	405	} else if (swab) {
	406	__swab64s(&marker->cm_createtime);
	407	__swab64s(&marker->cm_canceltime);
	408	}
d7e09d03 PT	409	}
d7e09d03 PT	410	EXPORT_SYMBOL(lustre_swab_cfg_marker);