[linux-2.6-block.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, 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 <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: "LPX64"\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);

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);
}
EXPORT_SYMBOL(lustre_swab_llog_id);

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);
	EXIT;
}
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);

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

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;
		}
		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: "LPX64"\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);
	EXIT;
}
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]);
	EXIT;
}

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);
		EXIT;
		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);
	EXIT;
	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);
	}

	EXIT;
	return;
}
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	*
	30	* Copyright (c) 2012, Intel Corporation.
	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
	45
	46	#include <lustre_log.h>
	47
	48	static void print_llogd_body(struct llogd_body *d)
	49	{
	50	CDEBUG(D_OTHER, "llogd body: %p\n", d);
	51	CDEBUG(D_OTHER, "\tlgd_logid.lgl_oi: "DOSTID"\n",
	52	POSTID(&d->lgd_logid.lgl_oi));
	53	CDEBUG(D_OTHER, "\tlgd_logid.lgl_ogen: %#x\n", d->lgd_logid.lgl_ogen);
	54	CDEBUG(D_OTHER, "\tlgd_ctxt_idx: %#x\n", d->lgd_ctxt_idx);
	55	CDEBUG(D_OTHER, "\tlgd_llh_flags: %#x\n", d->lgd_llh_flags);
	56	CDEBUG(D_OTHER, "\tlgd_index: %#x\n", d->lgd_index);
	57	CDEBUG(D_OTHER, "\tlgd_saved_index: %#x\n", d->lgd_saved_index);
	58	CDEBUG(D_OTHER, "\tlgd_len: %#x\n", d->lgd_len);
	59	CDEBUG(D_OTHER, "\tlgd_cur_offset: "LPX64"\n", d->lgd_cur_offset);
	60	}
	61
	62	void lustre_swab_lu_fid(struct lu_fid *fid)
	63	{
	64	__swab64s (&fid->f_seq);
65	__swab32s (&fid->f_oid);
66	__swab32s (&fid->f_ver);
67	}
68	EXPORT_SYMBOL(lustre_swab_lu_fid);
69
70	void lustre_swab_ost_id(struct ost_id *oid)
71	{
72	if (fid_seq_is_mdt0(oid->oi.oi_seq)) {
73	__swab64s(&oid->oi.oi_id);
74	__swab64s(&oid->oi.oi_seq);
75	} else {
76	lustre_swab_lu_fid(&oid->oi_fid);
77	}
78	}
79	EXPORT_SYMBOL(lustre_swab_ost_id);
80
ff8c39b2	81	void lustre_swab_llog_id(struct llog_logid *log_id)
	82	{
	83	__swab64s(&log_id->lgl_oi.oi.oi_id);
	84	__swab64s(&log_id->lgl_oi.oi.oi_seq);
	85	__swab32s(&log_id->lgl_ogen);
	86	}
	87	EXPORT_SYMBOL(lustre_swab_llog_id);
	88
d7e09d03 PT	89	void lustre_swab_llogd_body (struct llogd_body *d)
d7e09d03 PT	90	{
d7e09d03	91	print_llogd_body(d);
ff8c39b2	92	lustre_swab_llog_id(&d->lgd_logid);
d7e09d03 PT	93	__swab32s (&d->lgd_ctxt_idx);
	94	__swab32s (&d->lgd_llh_flags);
	95	__swab32s (&d->lgd_index);
	96	__swab32s (&d->lgd_saved_index);
	97	__swab32s (&d->lgd_len);
	98	__swab64s (&d->lgd_cur_offset);
	99	print_llogd_body(d);
	100	EXIT;
	101	}
	102	EXPORT_SYMBOL(lustre_swab_llogd_body);
	103
	104	void lustre_swab_llogd_conn_body (struct llogd_conn_body *d)
	105	{
	106	__swab64s (&d->lgdc_gen.mnt_cnt);
	107	__swab64s (&d->lgdc_gen.conn_cnt);
ff8c39b2	108	lustre_swab_llog_id(&d->lgdc_logid);
d7e09d03 PT	109	__swab32s (&d->lgdc_ctxt_idx);
	110	}
	111	EXPORT_SYMBOL(lustre_swab_llogd_conn_body);
	112
	113	void lustre_swab_ll_fid(struct ll_fid *fid)
	114	{
	115	__swab64s (&fid->id);
	116	__swab32s (&fid->generation);
	117	__swab32s (&fid->f_type);
	118	}
	119	EXPORT_SYMBOL(lustre_swab_ll_fid);
	120
	121	void lustre_swab_lu_seq_range(struct lu_seq_range *range)
	122	{
	123	__swab64s (&range->lsr_start);
	124	__swab64s (&range->lsr_end);
	125	__swab32s (&range->lsr_index);
	126	__swab32s (&range->lsr_flags);
	127	}
	128	EXPORT_SYMBOL(lustre_swab_lu_seq_range);
	129
	130	void lustre_swab_llog_rec(struct llog_rec_hdr *rec)
	131	{
	132	struct llog_rec_tail *tail = NULL;
	133
	134	__swab32s(&rec->lrh_len);
	135	__swab32s(&rec->lrh_index);
	136	__swab32s(&rec->lrh_type);
	137	__swab32s(&rec->lrh_id);
	138
	139	switch (rec->lrh_type) {
	140	case OST_SZ_REC:
	141	{
	142	struct llog_size_change_rec *lsc =
	143	(struct llog_size_change_rec *)rec;
	144
	145	lustre_swab_ll_fid(&lsc->lsc_fid);
	146	__swab32s(&lsc->lsc_ioepoch);
	147	tail = &lsc->lsc_tail;
	148	break;
	149	}
	150	case MDS_UNLINK_REC:
	151	{
	152	struct llog_unlink_rec lur = (struct llog_unlink_rec )rec;
	153
	154	__swab64s(&lur->lur_oid);
	155	__swab32s(&lur->lur_oseq);
	156	__swab32s(&lur->lur_count);
	157	tail = &lur->lur_tail;
	158	break;
	159	}
	160	case MDS_UNLINK64_REC:
	161	{
	162	struct llog_unlink64_rec *lur =
	163	(struct llog_unlink64_rec *)rec;
	164
	165	lustre_swab_lu_fid(&lur->lur_fid);
	166	__swab32s(&lur->lur_count);
	167	tail = &lur->lur_tail;
	168	break;
	169	}
	170	case CHANGELOG_REC:
	171	{
	172	struct llog_changelog_rec cr = (struct llog_changelog_rec)rec;
173
174	__swab16s(&cr->cr.cr_namelen);
175	__swab16s(&cr->cr.cr_flags);
176	__swab32s(&cr->cr.cr_type);
177	__swab64s(&cr->cr.cr_index);
178	__swab64s(&cr->cr.cr_prev);
179	__swab64s(&cr->cr.cr_time);
180	lustre_swab_lu_fid(&cr->cr.cr_tfid);
181	lustre_swab_lu_fid(&cr->cr.cr_pfid);
182	if (CHANGELOG_REC_EXTENDED(&cr->cr)) {
183	struct llog_changelog_ext_rec *ext =
184	(struct llog_changelog_ext_rec *)rec;
185
186	lustre_swab_lu_fid(&ext->cr.cr_sfid);
187	lustre_swab_lu_fid(&ext->cr.cr_spfid);
188	tail = &ext->cr_tail;
189	} else {
190	tail = &cr->cr_tail;
191	}
192	break;
193	}
194	case CHANGELOG_USER_REC:
195	{
196	struct llog_changelog_user_rec *cur =
197	(struct llog_changelog_user_rec*)rec;
198
199	__swab32s(&cur->cur_id);
200	__swab64s(&cur->cur_endrec);
201	tail = &cur->cur_tail;
202	break;
203	}
204
99a92265	205	case HSM_AGENT_REC: {
	206	struct llog_agent_req_rec *arr =
	207	(struct llog_agent_req_rec *)rec;
	208
	209	__swab32s(&arr->arr_hai.hai_len);
	210	__swab32s(&arr->arr_hai.hai_action);
	211	lustre_swab_lu_fid(&arr->arr_hai.hai_fid);
	212	lustre_swab_lu_fid(&arr->arr_hai.hai_dfid);
	213	__swab64s(&arr->arr_hai.hai_cookie);
	214	__swab64s(&arr->arr_hai.hai_extent.offset);
	215	__swab64s(&arr->arr_hai.hai_extent.length);
	216	__swab64s(&arr->arr_hai.hai_gid);
	217	/* no swabing for opaque data */
	218	/* hai_data[0]; */
	219	break;
	220	}
	221
d7e09d03 PT	222	case MDS_SETATTR64_REC:
	223	{
	224	struct llog_setattr64_rec *lsr =
	225	(struct llog_setattr64_rec *)rec;
	226
	227	lustre_swab_ost_id(&lsr->lsr_oi);
	228	__swab32s(&lsr->lsr_uid);
	229	__swab32s(&lsr->lsr_uid_h);
	230	__swab32s(&lsr->lsr_gid);
	231	__swab32s(&lsr->lsr_gid_h);
	232	tail = &lsr->lsr_tail;
	233	break;
	234	}
	235	case OBD_CFG_REC:
	236	/* these are swabbed as they are consumed */
	237	break;
	238	case LLOG_HDR_MAGIC:
	239	{
	240	struct llog_log_hdr llh = (struct llog_log_hdr )rec;
	241
	242	__swab64s(&llh->llh_timestamp);
	243	__swab32s(&llh->llh_count);
	244	__swab32s(&llh->llh_bitmap_offset);
	245	__swab32s(&llh->llh_flags);
	246	__swab32s(&llh->llh_size);
	247	__swab32s(&llh->llh_cat_idx);
	248	tail = &llh->llh_tail;
	249	break;
	250	}
	251	case LLOG_LOGID_MAGIC:
	252	{
	253	struct llog_logid_rec lid = (struct llog_logid_rec )rec;
	254
ff8c39b2	255	lustre_swab_llog_id(&lid->lid_id);
d7e09d03 PT	256	tail = &lid->lid_tail;
	257	break;
	258	}
	259	case LLOG_GEN_REC:
	260	{
	261	struct llog_gen_rec lgr = (struct llog_gen_rec )rec;
	262
	263	__swab64s(&lgr->lgr_gen.mnt_cnt);
	264	__swab64s(&lgr->lgr_gen.conn_cnt);
	265	tail = &lgr->lgr_tail;
	266	break;
	267	}
	268	case LLOG_PAD_MAGIC:
	269	break;
	270	default:
	271	CERROR("Unknown llog rec type %#x swabbing rec %p\n",
	272	rec->lrh_type, rec);
	273	}
	274
	275	if (tail) {
	276	__swab32s(&tail->lrt_len);
	277	__swab32s(&tail->lrt_index);
	278	}
	279	}
	280	EXPORT_SYMBOL(lustre_swab_llog_rec);
	281
	282	static void print_llog_hdr(struct llog_log_hdr *h)
	283	{
	284	CDEBUG(D_OTHER, "llog header: %p\n", h);
	285	CDEBUG(D_OTHER, "\tllh_hdr.lrh_index: %#x\n", h->llh_hdr.lrh_index);
	286	CDEBUG(D_OTHER, "\tllh_hdr.lrh_len: %#x\n", h->llh_hdr.lrh_len);
	287	CDEBUG(D_OTHER, "\tllh_hdr.lrh_type: %#x\n", h->llh_hdr.lrh_type);
	288	CDEBUG(D_OTHER, "\tllh_timestamp: "LPX64"\n", h->llh_timestamp);
	289	CDEBUG(D_OTHER, "\tllh_count: %#x\n", h->llh_count);
	290	CDEBUG(D_OTHER, "\tllh_bitmap_offset: %#x\n", h->llh_bitmap_offset);
	291	CDEBUG(D_OTHER, "\tllh_flags: %#x\n", h->llh_flags);
	292	CDEBUG(D_OTHER, "\tllh_size: %#x\n", h->llh_size);
	293	CDEBUG(D_OTHER, "\tllh_cat_idx: %#x\n", h->llh_cat_idx);
	294	CDEBUG(D_OTHER, "\tllh_tail.lrt_index: %#x\n", h->llh_tail.lrt_index);
	295	CDEBUG(D_OTHER, "\tllh_tail.lrt_len: %#x\n", h->llh_tail.lrt_len);
	296	}
	297
	298	void lustre_swab_llog_hdr (struct llog_log_hdr *h)
	299	{
d7e09d03 PT	300	print_llog_hdr(h);
	301
	302	lustre_swab_llog_rec(&h->llh_hdr);
	303
	304	print_llog_hdr(h);
	305	EXIT;
	306	}
	307	EXPORT_SYMBOL(lustre_swab_llog_hdr);
	308
	309	static void print_lustre_cfg(struct lustre_cfg *lcfg)
	310	{
	311	int i;
d7e09d03 PT	312
	313	if (!(libcfs_debug & D_OTHER)) /* don't loop on nothing */
	314	return;
	315	CDEBUG(D_OTHER, "lustre_cfg: %p\n", lcfg);
	316	CDEBUG(D_OTHER, "\tlcfg->lcfg_version: %#x\n", lcfg->lcfg_version);
	317
	318	CDEBUG(D_OTHER, "\tlcfg->lcfg_command: %#x\n", lcfg->lcfg_command);
	319	CDEBUG(D_OTHER, "\tlcfg->lcfg_num: %#x\n", lcfg->lcfg_num);
	320	CDEBUG(D_OTHER, "\tlcfg->lcfg_flags: %#x\n", lcfg->lcfg_flags);
	321	CDEBUG(D_OTHER, "\tlcfg->lcfg_nid: %s\n", libcfs_nid2str(lcfg->lcfg_nid));
	322
	323	CDEBUG(D_OTHER, "\tlcfg->lcfg_bufcount: %d\n", lcfg->lcfg_bufcount);
	324	if (lcfg->lcfg_bufcount < LUSTRE_CFG_MAX_BUFCOUNT)
	325	for (i = 0; i < lcfg->lcfg_bufcount; i++)
	326	CDEBUG(D_OTHER, "\tlcfg->lcfg_buflens[%d]: %d\n",
	327	i, lcfg->lcfg_buflens[i]);
	328	EXIT;
	329	}
	330
	331	void lustre_swab_lustre_cfg(struct lustre_cfg *lcfg)
	332	{
	333	int i;
d7e09d03 PT	334
	335	__swab32s(&lcfg->lcfg_version);
	336
	337	if (lcfg->lcfg_version != LUSTRE_CFG_VERSION) {
	338	CERROR("not swabbing lustre_cfg version %#x (expecting %#x)\n",
	339	lcfg->lcfg_version, LUSTRE_CFG_VERSION);
	340	EXIT;
	341	return;
	342	}
	343
	344	__swab32s(&lcfg->lcfg_command);
	345	__swab32s(&lcfg->lcfg_num);
	346	__swab32s(&lcfg->lcfg_flags);
	347	__swab64s(&lcfg->lcfg_nid);
	348	__swab32s(&lcfg->lcfg_bufcount);
	349	for (i = 0; i < lcfg->lcfg_bufcount && i < LUSTRE_CFG_MAX_BUFCOUNT; i++)
	350	__swab32s(&lcfg->lcfg_buflens[i]);
	351
	352	print_lustre_cfg(lcfg);
	353	EXIT;
	354	return;
	355	}
	356	EXPORT_SYMBOL(lustre_swab_lustre_cfg);
	357
	358	/* used only for compatibility with old on-disk cfg_marker data */
	359	struct cfg_marker32 {
	360	__u32 cm_step;
	361	__u32 cm_flags;
	362	__u32 cm_vers;
	363	__u32 padding;
	364	__u32 cm_createtime;
	365	__u32 cm_canceltime;
	366	char cm_tgtname[MTI_NAME_MAXLEN];
	367	char cm_comment[MTI_NAME_MAXLEN];
	368	};
	369
	370	#define MTI_NAMELEN32 (MTI_NAME_MAXLEN - \
	371	(sizeof(struct cfg_marker) - sizeof(struct cfg_marker32)))
	372
	373	void lustre_swab_cfg_marker(struct cfg_marker *marker, int swab, int size)
	374	{
	375	struct cfg_marker32 cm32 = (struct cfg_marker32)marker;
d7e09d03 PT	376
	377	if (swab) {
	378	__swab32s(&marker->cm_step);
	379	__swab32s(&marker->cm_flags);
	380	__swab32s(&marker->cm_vers);
	381	}
	382	if (size == sizeof(*cm32)) {
	383	__u32 createtime, canceltime;
	384	/* There was a problem with the original declaration of
	385	* cfg_marker on 32-bit systems because it used time_t as
	386	* a wire protocol structure, and didn't verify this in
	387	* wirecheck. We now have to convert the offsets of the
	388	* later fields in order to work on 32- and 64-bit systems.
	389	*
	390	* Fortunately, the cm_comment field has no functional use
	391	* so can be sacrificed when converting the timestamp size.
	392	*
	393	* Overwrite fields from the end first, so they are not
	394	* clobbered, and use memmove() instead of memcpy() because
	395	* the source and target buffers overlap. bug 16771 */
	396	createtime = cm32->cm_createtime;
	397	canceltime = cm32->cm_canceltime;
	398	memmove(marker->cm_comment, cm32->cm_comment, MTI_NAMELEN32);
	399	marker->cm_comment[MTI_NAMELEN32 - 1] = '\0';
	400	memmove(marker->cm_tgtname, cm32->cm_tgtname,
	401	sizeof(marker->cm_tgtname));
	402	if (swab) {
	403	__swab32s(&createtime);
	404	__swab32s(&canceltime);
	405	}
	406	marker->cm_createtime = createtime;
	407	marker->cm_canceltime = canceltime;
	408	CDEBUG(D_CONFIG, "Find old cfg_marker(Srv32b,Clt64b) "
	409	"for target %s, converting\n",
	410	marker->cm_tgtname);
	411	} else if (swab) {
	412	__swab64s(&marker->cm_createtime);
	413	__swab64s(&marker->cm_canceltime);
	414	}
	415
	416	EXIT;
	417	return;
	418	}
	419	EXPORT_SYMBOL(lustre_swab_cfg_marker);