/*
 * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
 * Copyright (C) 2004-2009 Red Hat, Inc. All rights reserved.
 *
 * This file is part of LVM2.
 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU Lesser General Public License v.2.1.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "tools.h"

#include "lib/report/report.h"

typedef enum {
	REPORT_IDX_NULL = -1,
	REPORT_IDX_SINGLE,
	REPORT_IDX_LOG,
	REPORT_IDX_FULL_VGS,
	REPORT_IDX_FULL_LVS,
	REPORT_IDX_FULL_PVS,
	REPORT_IDX_FULL_PVSEGS,
	REPORT_IDX_FULL_SEGS,
	REPORT_IDX_COUNT
} report_idx_t;

#define REPORT_IDX_FULL_START REPORT_IDX_FULL_VGS

struct single_report_args {
	report_type_t report_type;
	char report_prefix[32];
	const char *report_name;
	int args_are_pvs;
	const char *keys;
	const char *options;
	const char *fields_to_compact;
	const char *selection;
};

/* TODO: configure these common report args only once per cmd */
struct report_args {
	int argc;
	char **argv;
	dm_report_group_type_t report_group_type;
	report_type_t report_type;
	int aligned;
	int buffered;
	int headings;
	int field_prefixes;
	int quoted;
	int columns_as_rows;
	const char *separator;
	struct volume_group *full_report_vg;
	int log_only;
	struct single_report_args single_args[REPORT_IDX_COUNT];
};

static int _process_each_devtype(struct cmd_context *cmd, int argc,
				 struct processing_handle *handle)
{
	if (argc)
		log_warn("WARNING: devtypes currently ignores command line arguments.");

	if (!report_devtypes(handle->custom_handle))
		return_ECMD_FAILED;

	return ECMD_PROCESSED;
}

static int _vgs_single(struct cmd_context *cmd __attribute__((unused)),
		       const char *vg_name, struct volume_group *vg,
		       struct processing_handle *handle)
{
	struct selection_handle *sh = handle->selection_handle;

	if (!report_object(sh ? : handle->custom_handle, sh != NULL,
			   vg, NULL, NULL, NULL, NULL, NULL, NULL))
		return_ECMD_FAILED;

	check_current_backup(vg);

	return ECMD_PROCESSED;
}

static int _do_info_and_status(struct cmd_context *cmd,
				const struct lv_segment *lv_seg,
				struct lv_with_info_and_seg_status *status,
				int do_info, int do_status)
{
	status->lv = lv_seg->lv;

	if (lv_is_historical(lv_seg->lv))
		return 1;

	if (do_status) {
		if (!(status->seg_status.mem = dm_pool_create("reporter_pool", 1024)))
			return_0;

		if (do_info)
			/* both info and status */
			status->info_ok = lv_info_with_seg_status(cmd, lv_seg, status, 1, 1);
		else
			status->info_ok = lv_info_with_seg_status(cmd, lv_seg, status, 0, 0);
	} else if (do_info)
		/* info only */
		status->info_ok = lv_info(cmd, status->lv, 0, &status->info, 1, 1);

	return 1;
}

/* Check if this is really merging origin.
 * In such case, origin is gone, and user should see
 * only data from merged snapshot. Important for thin. */
static int _check_merging_origin(const struct logical_volume *lv,
				 struct lv_with_info_and_seg_status *status,
				 int *merged)
{
	uint32_t device_id;

	*merged = 0;

	switch (status->seg_status.type) {
	case SEG_STATUS_THIN:
		/* Get 'device_id' from active dm-table */
		if (!lv_thin_device_id(lv, &device_id))
			return_0;

		if (lv->snapshot->device_id != device_id)
			return 1;
		break;
	case SEG_STATUS_SNAPSHOT:
		break;
	default:
		/* When inactive, it's technically merging */
		if (status->info_ok && !status->info.exists)
			break;
		return 1;
	}

	/* Origin is gone */
	log_debug_activation("Merge is in progress, reporting merged LV %s.",
			     display_lvname(lv->snapshot->lv));
	*merged = 1;

	return 1;
}

static int _do_lvs_with_info_and_status_single(struct cmd_context *cmd,
					       const struct logical_volume *lv,
					       int do_info, int do_status,
					       struct processing_handle *handle)
{
	struct selection_handle *sh = handle->selection_handle;
	struct lv_with_info_and_seg_status status = {
		.seg_status.type = SEG_STATUS_NONE
	};
	int r = ECMD_FAILED;
	int merged;

	if (lv_is_merging_origin(lv))
		/* Status is need to know which LV should be shown */
		do_status = 1;

	if (!_do_info_and_status(cmd, first_seg(lv), &status, do_info, do_status))
		goto_out;

	if (lv_is_merging_origin(lv)) {
		if (!_check_merging_origin(lv, &status, &merged))
		      goto_out;
		if (merged && lv_is_thin_volume(lv->snapshot->lv))
			lv = lv->snapshot->lv;
	}

	if (!report_object(sh ? : handle->custom_handle, sh != NULL,
			   lv->vg, lv, NULL, NULL, NULL, &status, NULL))
		goto out;

	r = ECMD_PROCESSED;
out:
	if (status.seg_status.mem)
		dm_pool_destroy(status.seg_status.mem);

	return r;
}

static int _lvs_single(struct cmd_context *cmd, struct logical_volume *lv,
		       struct processing_handle *handle)
{
	return _do_lvs_with_info_and_status_single(cmd, lv, 0, 0, handle);
}

static int _lvs_with_info_single(struct cmd_context *cmd, struct logical_volume *lv,
				 struct processing_handle *handle)
{
	return _do_lvs_with_info_and_status_single(cmd, lv, 1, 0, handle);
}

static int _lvs_with_status_single(struct cmd_context *cmd, struct logical_volume *lv,
				   struct processing_handle *handle)
{
	return _do_lvs_with_info_and_status_single(cmd, lv, 0, 1, handle);
}

static int _lvs_with_info_and_status_single(struct cmd_context *cmd, struct logical_volume *lv,
					    struct processing_handle *handle)
{
	return _do_lvs_with_info_and_status_single(cmd, lv, 1, 1, handle);
}

static int _do_segs_with_info_and_status_single(struct cmd_context *cmd,
						const struct lv_segment *seg,
						int do_info, int do_status,
						struct processing_handle *handle)
{
	struct selection_handle *sh = handle->selection_handle;
	struct lv_with_info_and_seg_status status = {
		.seg_status.type = SEG_STATUS_NONE
	};
	int r = ECMD_FAILED;
	int merged;

	if (lv_is_merging_origin(seg->lv))
		/* Status is need to know which LV should be shown */
		do_status = 1;

	if (!_do_info_and_status(cmd, seg, &status, do_info, do_status))
		goto_out;

	if (lv_is_merging_origin(seg->lv)) {
		if (!_check_merging_origin(seg->lv, &status, &merged))
			goto_out;
		if (merged && lv_is_thin_volume(seg->lv->snapshot->lv))
			seg = seg->lv->snapshot;
	}

	if (!report_object(sh ? : handle->custom_handle, sh != NULL,
			   seg->lv->vg, seg->lv, NULL, seg, NULL, &status, NULL))
		goto_out;

	r = ECMD_PROCESSED;
out:
	if (status.seg_status.mem)
		dm_pool_destroy(status.seg_status.mem);

	return r;
}

static int _segs_single(struct cmd_context *cmd, struct lv_segment *seg,
			struct processing_handle *handle)
{
	return _do_segs_with_info_and_status_single(cmd, seg, 0, 0, handle);
}

static int _segs_with_info_single(struct cmd_context *cmd, struct lv_segment *seg,
				  struct processing_handle *handle)
{
	return _do_segs_with_info_and_status_single(cmd, seg, 1, 0, handle);
}

static int _segs_with_status_single(struct cmd_context *cmd, struct lv_segment *seg,
				    struct processing_handle *handle)
{
	return _do_segs_with_info_and_status_single(cmd, seg, 0, 1, handle);
}

static int _segs_with_info_and_status_single(struct cmd_context *cmd, struct lv_segment *seg,
					     struct processing_handle *handle)
{
	return _do_segs_with_info_and_status_single(cmd, seg, 1, 1, handle);
}

static int _lvsegs_single(struct cmd_context *cmd, struct logical_volume *lv,
			  struct processing_handle *handle)
{
	if (!arg_is_set(cmd, all_ARG) && !lv_is_visible(lv))
		return ECMD_PROCESSED;

	return process_each_segment_in_lv(cmd, lv, handle, _segs_single);
}

static int _lvsegs_with_info_single(struct cmd_context *cmd, struct logical_volume *lv,
				    struct processing_handle *handle)
{
	if (!arg_is_set(cmd, all_ARG) && !lv_is_visible(lv))
		return ECMD_PROCESSED;

	return process_each_segment_in_lv(cmd, lv, handle, _segs_with_info_single);
}

static int _lvsegs_with_status_single(struct cmd_context *cmd, struct logical_volume *lv,
				      struct processing_handle *handle)
{
	if (!arg_is_set(cmd, all_ARG) && !lv_is_visible(lv))
		return ECMD_PROCESSED;

	return process_each_segment_in_lv(cmd, lv, handle, _segs_with_status_single);
}

static int _lvsegs_with_info_and_status_single(struct cmd_context *cmd, struct logical_volume *lv,
					       struct processing_handle *handle)
{
	if (!arg_is_set(cmd, all_ARG) && !lv_is_visible(lv))
		return ECMD_PROCESSED;

	return process_each_segment_in_lv(cmd, lv, handle, _segs_with_info_and_status_single);
}

static int _do_pvsegs_sub_single(struct cmd_context *cmd,
				 struct volume_group *vg,
				 struct pv_segment *pvseg,
				 int do_info,
				 int do_status,
				 struct processing_handle *handle)
{
	struct selection_handle *sh = handle->selection_handle;
	int ret = ECMD_PROCESSED;
	struct lv_segment *seg = pvseg->lvseg;

	struct segment_type _freeseg_type = {
		.flags = SEG_VIRTUAL | SEG_CANNOT_BE_ZEROED,
		.name = "free",
	};

	struct volume_group _free_vg = {
		.cmd = cmd,
		.name = "",
		.pvs = DM_LIST_HEAD_INIT(_free_vg.pvs),
		.lvs = DM_LIST_HEAD_INIT(_free_vg.lvs),
		.historical_lvs = DM_LIST_HEAD_INIT(_free_vg.historical_lvs),
		.tags = DM_LIST_HEAD_INIT(_free_vg.tags),
	};

	struct logical_volume _free_logical_volume = {
		.name = "",
		.vg = vg ?: &_free_vg,
		.status = VISIBLE_LV,
		.major = -1,
		.minor = -1,
		.snapshot_segs = DM_LIST_HEAD_INIT(_free_logical_volume.snapshot_segs),
		.segments = DM_LIST_HEAD_INIT(_free_logical_volume.segments),
		.tags = DM_LIST_HEAD_INIT(_free_logical_volume.tags),
		.segs_using_this_lv = DM_LIST_HEAD_INIT(_free_logical_volume.segs_using_this_lv),
		.indirect_glvs = DM_LIST_HEAD_INIT(_free_logical_volume.indirect_glvs),
	};

	struct lv_segment _free_lv_segment = {
		.lv = &_free_logical_volume,
		.segtype = &_freeseg_type,
		.len = pvseg->len,
		.origin_list = DM_LIST_HEAD_INIT(_free_lv_segment.origin_list),
		.tags = DM_LIST_HEAD_INIT(_free_lv_segment.tags),
	};

	struct lv_with_info_and_seg_status status = {
		.seg_status.type = SEG_STATUS_NONE,
		.lv = &_free_logical_volume
	};

	if (seg && !_do_info_and_status(cmd, seg, &status, do_info, do_status))
		goto_out;

	if (!report_object(sh ? : handle->custom_handle, sh != NULL,
			   vg, seg ? seg->lv : &_free_logical_volume,
			   pvseg->pv, seg ? : &_free_lv_segment, pvseg,
			   &status, pv_label(pvseg->pv))) {
		ret = ECMD_FAILED;
		goto_out;
	}

 out:
	if (status.seg_status.mem)
		dm_pool_destroy(status.seg_status.mem);

	return ret;
}

static int _pvsegs_sub_single(struct cmd_context *cmd,
			      struct volume_group *vg,
			      struct pv_segment *pvseg,
			      struct processing_handle *handle)
{
	return _do_pvsegs_sub_single(cmd, vg, pvseg, 0, 0, handle);
}

static int _pvsegs_with_lv_info_sub_single(struct cmd_context *cmd,
					   struct volume_group *vg,
					   struct pv_segment *pvseg,
					   struct processing_handle *handle)
{
	return _do_pvsegs_sub_single(cmd, vg, pvseg, 1, 0, handle);
}

static int _pvsegs_with_lv_status_sub_single(struct cmd_context *cmd,
					     struct volume_group *vg,
					     struct pv_segment *pvseg,
					     struct processing_handle *handle)
{
	return _do_pvsegs_sub_single(cmd, vg, pvseg, 0, 1, handle);
}

static int _pvsegs_with_lv_info_and_status_sub_single(struct cmd_context *cmd,
						      struct volume_group *vg,
						      struct pv_segment *pvseg,
						      struct processing_handle *handle)
{
	return _do_pvsegs_sub_single(cmd, vg, pvseg, 1, 1, handle);
}

static int _pvsegs_single(struct cmd_context *cmd,
			  struct volume_group *vg,
			  struct physical_volume *pv,
			  struct processing_handle *handle)
{
	return process_each_segment_in_pv(cmd, vg, pv, handle, _pvsegs_sub_single);
}

static int _pvsegs_with_lv_info_single(struct cmd_context *cmd,
				       struct volume_group *vg,
				       struct physical_volume *pv,
				       struct processing_handle *handle)
{
	return process_each_segment_in_pv(cmd, vg, pv, handle, _pvsegs_with_lv_info_sub_single);
}

static int _pvsegs_with_lv_status_single(struct cmd_context *cmd,
					 struct volume_group *vg,
					 struct physical_volume *pv,
					 struct processing_handle *handle)
{
	return process_each_segment_in_pv(cmd, vg, pv, handle, _pvsegs_with_lv_status_sub_single);
}

static int _pvsegs_with_lv_info_and_status_single(struct cmd_context *cmd,
						  struct volume_group *vg,
						  struct physical_volume *pv,
						  struct processing_handle *handle)
{
	return process_each_segment_in_pv(cmd, vg, pv, handle, _pvsegs_with_lv_info_and_status_sub_single);
}

static int _pvs_single(struct cmd_context *cmd, struct volume_group *vg,
		       struct physical_volume *pv,
		       struct processing_handle *handle)
{
	struct selection_handle *sh = handle->selection_handle;

	if (!report_object(sh ? : handle->custom_handle, sh != NULL,
			   vg, NULL, pv, NULL, NULL, NULL, NULL))
		return_ECMD_FAILED;

	return ECMD_PROCESSED;
}

static int _label_single(struct cmd_context *cmd, struct label *label,
		         struct processing_handle *handle)
{
	struct selection_handle *sh = handle->selection_handle;

	if (!report_object(sh ? : handle->custom_handle, sh != NULL,
			   NULL, NULL, NULL, NULL, NULL, NULL, label))
		return_ECMD_FAILED;

	return ECMD_PROCESSED;
}

static int _pvs_in_vg(struct cmd_context *cmd, const char *vg_name,
		      struct volume_group *vg,
		      struct processing_handle *handle)
{
	return process_each_pv_in_vg(cmd, vg, handle, &_pvs_single);
}

static int _pvsegs_in_vg(struct cmd_context *cmd, const char *vg_name,
			 struct volume_group *vg,
			 struct processing_handle *handle)
{
	return process_each_pv_in_vg(cmd, vg, handle, &_pvsegs_single);
}

static int _get_final_report_type(struct report_args *args,
				  struct single_report_args *single_args,
				  report_type_t report_type,
				  int *lv_info_needed,
				  int *lv_segment_status_needed,
				  report_type_t *final_report_type)
{
	/* Do we need to acquire LV device info in addition? */
	*lv_info_needed = (report_type & (LVSINFO | LVSINFOSTATUS)) ? 1 : 0;

	/* Do we need to acquire LV device status in addition? */
	*lv_segment_status_needed = (report_type & (LVSSTATUS | LVSINFOSTATUS)) ? 1 : 0;

	/* Ensure options selected are compatible */
	if (report_type & SEGS)
		report_type |= LVS;
	if (report_type & PVSEGS)
		report_type |= PVS;
	if ((report_type & (LVS | LVSINFO | LVSSTATUS | LVSINFOSTATUS)) &&
	    (report_type & (PVS | LABEL)) && !(single_args->args_are_pvs || (args->full_report_vg && single_args->report_type == PVSEGS))) {
		log_error("Can't report LV and PV fields at the same time in %sreport type \"%s\"%s%s.",
			  args->full_report_vg ? "sub" : "" , single_args->report_prefix,
			  args->full_report_vg ? " in VG " : "",
			  args->full_report_vg ? args->full_report_vg->name: "");
		return 0;
	}

	/* Change report type if fields specified makes this necessary */
	if (report_type & FULL)
		report_type = FULL;
	else if ((report_type & PVSEGS) ||
		 ((report_type & (PVS | LABEL)) && (report_type & (LVS | LVSINFO | LVSSTATUS | LVSINFOSTATUS))))
		report_type = PVSEGS;
	else if ((report_type & PVS) ||
		 ((report_type & LABEL) && (report_type & VGS)))
		report_type = PVS;
	else if (report_type & SEGS)
		report_type = SEGS;
	else if (report_type & (LVS | LVSINFO | LVSSTATUS | LVSINFOSTATUS))
		report_type = LVS;

	if (args->full_report_vg && (report_type != single_args->report_type)) {
		/* FIXME: Tell user about which columns exactly are incorrectly used for that report type... */
		log_error("Subreport of type \"%s\" for VG %s contains columns which lead to change of report type. "
			  "Add these columns to proper subreport type.", single_args->report_prefix, args->full_report_vg->name);
		return 0;
	}

	*final_report_type = report_type;
	return 1;
}

static int _report_all_in_vg(struct cmd_context *cmd, struct processing_handle *handle,
			     struct volume_group *vg, report_type_t type,
			     int do_lv_info, int do_lv_seg_status)
{
	int r = 0;

	switch (type) {
		case VGS:
			r = _vgs_single(cmd, vg->name, vg, handle);
			break;
		case LVS:
			r = process_each_lv_in_vg(cmd, vg, NULL, NULL, 0, handle, NULL,
						  do_lv_info && !do_lv_seg_status ? &_lvs_with_info_single :
						  !do_lv_info && do_lv_seg_status ? &_lvs_with_status_single :
						  do_lv_info && do_lv_seg_status ? &_lvs_with_info_and_status_single :
										   &_lvs_single);
			break;
		case SEGS:
			r = process_each_lv_in_vg(cmd, vg, NULL, NULL, 0, handle, NULL,
						  do_lv_info && !do_lv_seg_status ? &_lvsegs_with_info_single :
						  !do_lv_info && do_lv_seg_status ? &_lvsegs_with_status_single :
						  do_lv_info && do_lv_seg_status ? &_lvsegs_with_info_and_status_single :
										   &_lvsegs_single);
			break;
		case PVS:
			r = process_each_pv_in_vg(cmd, vg, handle, &_pvs_single);
			break;
		case PVSEGS:
			r = process_each_pv_in_vg(cmd, vg, handle,
						  do_lv_info && !do_lv_seg_status ? &_pvsegs_with_lv_info_single :
						  !do_lv_info && do_lv_seg_status ? &_pvsegs_with_lv_status_single :
						  do_lv_info && do_lv_seg_status ? &_pvsegs_with_lv_info_and_status_single :
										   &_pvsegs_single);
			break;
		default:
			log_error(INTERNAL_ERROR "_report_all_in_vg: incorrect report type");
			break;
	}

	return r;
}

static int _report_all_in_lv(struct cmd_context *cmd, struct processing_handle *handle,
			     struct logical_volume *lv, report_type_t type,
			     int do_lv_info, int do_lv_seg_status)
{
	int r = 0;

	switch (type) {
		case LVS:
			r = _do_lvs_with_info_and_status_single(cmd, lv, do_lv_info, do_lv_seg_status, handle);
			break;
		case SEGS:
			r = process_each_segment_in_lv(cmd, lv, handle,
						       do_lv_info && !do_lv_seg_status ? &_segs_with_info_single :
							       !do_lv_info && do_lv_seg_status ? &_segs_with_status_single :
							       do_lv_info && do_lv_seg_status ? &_segs_with_info_and_status_single :
												&_segs_single);
			break;
		default:
			log_error(INTERNAL_ERROR "_report_all_in_lv: incorrect report type");
			break;
	}

	return r;
}

static int _report_all_in_pv(struct cmd_context *cmd, struct processing_handle *handle,
			     struct physical_volume *pv, report_type_t type,
			     int do_lv_info, int do_lv_seg_status)
{
	int r = 0;

	switch (type) {
		case PVS:
			r = _pvs_single(cmd, pv->vg, pv, handle);
			break;
		case PVSEGS:
			r = process_each_segment_in_pv(cmd, pv->vg, pv, handle,
						       do_lv_info && !do_lv_seg_status ? &_pvsegs_with_lv_info_sub_single :
						       !do_lv_info && do_lv_seg_status ? &_pvsegs_with_lv_status_sub_single :
						       do_lv_info && do_lv_seg_status ? &_pvsegs_with_lv_info_and_status_sub_single :
											&_pvsegs_sub_single);
			break;
		default:
			log_error(INTERNAL_ERROR "_report_all_in_pv: incorrect report type");
			break;
	}

	return r;
}

int report_for_selection(struct cmd_context *cmd,
			 struct processing_handle *parent_handle,
			 struct physical_volume *pv,
			 struct volume_group *vg,
			 struct logical_volume *lv)
{
	struct selection_handle *sh = parent_handle->selection_handle;
	report_type_t initial_report_type = sh->report_type;
	struct report_args args = {0};
	struct single_report_args *single_args = &args.single_args[REPORT_IDX_SINGLE];
	int do_lv_info, do_lv_seg_status;
	struct processing_handle *handle;
	int r = 0;

	single_args->report_type = sh->orig_report_type | sh->report_type;
	single_args->args_are_pvs = sh->orig_report_type == PVS;

	if (!_get_final_report_type(&args, single_args,
				    single_args->report_type,
				    &do_lv_info, &do_lv_seg_status,
				    &sh->report_type))
		return_0;

	if (!(handle = init_processing_handle(cmd, parent_handle))) {
		sh->report_type = initial_report_type;
		return_0;
	}

	/*
	 * We're already reporting for select so override
	 * internal_report_for_select to 0 as we can call
	 * process_each_* functions again and we could
	 * end up in an infinite loop if we didn't stop
	 * internal reporting for select right here.
	 *
	 * So the overall call trace from top to bottom looks like this:
	 *
	 * process_each_* (top-level one, using processing_handle with internal reporting enabled and selection_handle) ->
	 *   select_match_*(processing_handle with selection_handle) ->
	 *     report for selection ->
	 *     	 (creating new processing_handle here with internal reporting disabled!!!)
	 *       reporting_fn OR process_each_* (using *new* processing_handle with original selection_handle) 
	 *
	 * The selection_handle is still reused so we can track
	 * whether any of the items the top-level one is composed
	 * of are still selected or not unerneath. Do not destroy
	 * this selection handle - it needs to be passed to upper
	 * layers to check the overall selection status.
	 */
	handle->internal_report_for_select = 0;
	handle->selection_handle = sh;

	/*
	 * Remember:
	 *   sh->orig_report_type is the original report type requested (what are we selecting? PV/VG/LV?)
	 *   sh->report_type is the report type actually used (it counts with all types of fields used in selection criteria)
	 */
	switch (sh->orig_report_type) {
		case LVS:
			r = _report_all_in_lv(cmd, handle, lv, sh->report_type, do_lv_info, do_lv_seg_status);
			break;
		case VGS:
			r = _report_all_in_vg(cmd, handle, vg, sh->report_type, do_lv_info, do_lv_seg_status);
			break;
		case PVS:
			r = _report_all_in_pv(cmd, handle, pv, sh->report_type, do_lv_info, do_lv_seg_status);
			break;
		default:
			log_error(INTERNAL_ERROR "report_for_selection: incorrect report type");
			break;
	}

	sh->report_type = initial_report_type;

	/*
	 * Keep the selection handle provided from the caller -
	 * do not destroy it - the caller will still use it to
	 * pass the result through it to layers above.
	 */
	handle->selection_handle = NULL;
	destroy_processing_handle(cmd, handle);
	return r;
}

static void _check_pv_list(struct cmd_context *cmd, struct report_args *args, struct single_report_args *single_args)
{
	int i;

	if (!args->argv)
		return;

	single_args->args_are_pvs = (single_args->report_type == PVS ||
				     single_args->report_type == LABEL ||
				     single_args->report_type == PVSEGS) ? 1 : 0;

	if (single_args->args_are_pvs && args->argc) {
		for (i = 0; i < args->argc; i++) {
			if (*args->argv[i] == '@') {
				/*
				 * Tags are metadata related, not label
				 * related, change report type accordingly!
				 */
				if (single_args->report_type == LABEL)
					single_args->report_type = PVS;
				break;
			}
		}
	}
}

static void _del_option_from_list(struct dm_list *sll, const char *prefix,
				  size_t prefix_len, const char *str)
{
	struct dm_list *slh;
	struct dm_str_list *sl;
	const char *a = str, *b;

	dm_list_uniterate(slh, sll, sll) {
		sl = dm_list_item(slh, struct dm_str_list);

		/* exact match */
		if (!strcmp(str, sl->str)) {
			dm_list_del(slh);
			return;
		}

		/* also try to match with known prefix */
		b = sl->str;
		if (!strncmp(prefix, a, prefix_len)) {
			a += prefix_len;
			if (*a == '_')
				a++;
		}
		if (!strncmp(prefix, b, prefix_len)) {
			b += prefix_len;
			if (*b == '_')
				b++;
		}
		if (!strcmp(a, b)) {
			dm_list_del(slh);
			return;
		}
	}
}

#define _get_report_idx(report_type,single_report_type) \
	((((report_type) != FULL) && ((report_type) == single_report_type)) ? REPORT_IDX_SINGLE : REPORT_IDX_FULL_ ## single_report_type)

static report_idx_t _get_report_idx_from_name(report_type_t report_type, const char *name)
{
	report_idx_t idx;

	if (!name || !*name)
		return REPORT_IDX_NULL;

	/* Change to basic report type for comparison. */
	if ((report_type == LABEL) || (report_type == PVSEGS))
		report_type = PVS;
	else if (report_type == SEGS)
		report_type = LVS;

	if (!strcasecmp(name, "log"))
		idx = REPORT_IDX_LOG;
	else if (!strcasecmp(name, "vg"))
		idx = _get_report_idx(report_type, VGS);
	else if (!strcasecmp(name, "pv"))
		idx = _get_report_idx(report_type, PVS);
	else if (!strcasecmp(name, "lv"))
		idx = _get_report_idx(report_type, LVS);
	else if (!strcasecmp(name, "pvseg")) {
		idx = (report_type == FULL) ? _get_report_idx(report_type, PVSEGS)
					    : _get_report_idx(report_type, PVS);
	} else if (!strcasecmp(name, "seg"))
		idx = (report_type == FULL) ? _get_report_idx(report_type, SEGS)
					    : _get_report_idx(report_type, LVS);
	else {
		idx = REPORT_IDX_NULL;
		log_error("Unknonwn report specifier in "
			  "report option list: %s.", name);
	}

	return idx;
}

static int _should_process_report_idx(report_type_t report_type, int allow_single, report_idx_t idx)
{
	if (((idx == REPORT_IDX_LOG) && (report_type != CMDLOG)) ||
	    ((idx == REPORT_IDX_SINGLE) && !allow_single) ||
	    ((idx >= REPORT_IDX_FULL_START) && report_type != FULL))
		return 0;

	return 1;
}

enum opts_list_type {
	OPTS_REPLACE,
	OPTS_ADD,
	OPTS_REMOVE,
	OPTS_COMPACT
};

static int _get_report_options(struct cmd_context *cmd,
			       struct report_args *args,
			       struct single_report_args *single_args)
{
	int action;
	struct arg_value_group_list *current_group;
	struct dm_list *final_opts_list[REPORT_IDX_COUNT] = { NULL };
	struct dm_list *opts_list = NULL;
	struct dm_str_list *sl;
	struct dm_pool *mem;
	const char *report_name = NULL;
	const char *opts;
	report_idx_t idx = REPORT_IDX_SINGLE;
	int r = ECMD_FAILED;

	if (!arg_is_set(cmd, options_ARG))
		return ECMD_PROCESSED;

	if (!(mem = dm_pool_create("report_options", 128))) {
		log_error("Failed to create temporary mempool to process report options.");
		return ECMD_FAILED;
	}

	if (single_args->report_type == CMDLOG) {
		if (!(final_opts_list[REPORT_IDX_LOG] = str_to_str_list(mem, single_args->options, ",", 1)))
			goto_out;
	} else if (single_args->report_type == FULL) {
		if (!(final_opts_list[REPORT_IDX_FULL_VGS] = str_to_str_list(mem, args->single_args[REPORT_IDX_FULL_VGS].options, ",", 1)) ||
		    !(final_opts_list[REPORT_IDX_FULL_PVS] = str_to_str_list(mem, args->single_args[REPORT_IDX_FULL_PVS].options, ",", 1)) ||
		    !(final_opts_list[REPORT_IDX_FULL_LVS] = str_to_str_list(mem, args->single_args[REPORT_IDX_FULL_LVS].options, ",", 1)) ||
		    !(final_opts_list[REPORT_IDX_FULL_PVSEGS] = str_to_str_list(mem, args->single_args[REPORT_IDX_FULL_PVSEGS].options, ",", 1)) ||
		    !(final_opts_list[REPORT_IDX_FULL_SEGS] = str_to_str_list(mem, args->single_args[REPORT_IDX_FULL_SEGS].options, ",", 1)))
			goto_out;
	} else {
		if (!(final_opts_list[REPORT_IDX_SINGLE] = str_to_str_list(mem, single_args->options, ",", 1)))
			goto_out;
	}

	dm_list_iterate_items(current_group, &cmd->arg_value_groups) {
		if (!grouped_arg_is_set(current_group->arg_values, options_ARG))
			continue;

		if (grouped_arg_is_set(current_group->arg_values, configreport_ARG)) {
			report_name = grouped_arg_str_value(current_group->arg_values, configreport_ARG, NULL);
			if ((idx = _get_report_idx_from_name(single_args->report_type, report_name)) == REPORT_IDX_NULL)
				goto_out;
		}

		opts = grouped_arg_str_value(current_group->arg_values, options_ARG, NULL);
		if (!opts || !*opts) {
			log_error("Invalid options string: %s", opts);
			r = EINVALID_CMD_LINE;
			goto out;
		}

		switch (*opts) {
			case '+':
				action = OPTS_ADD;
				opts++;
				break;
			case '-':
				action = OPTS_REMOVE;
				opts++;
				break;
			case '#':
				action = OPTS_COMPACT;
				opts++;
				break;
			default:
				action = OPTS_REPLACE;
		}

		if (!_should_process_report_idx(single_args->report_type, !(single_args->report_type & (CMDLOG | FULL)), idx))
			continue;

		if ((action != OPTS_COMPACT) &&
		    !(opts_list = str_to_str_list(mem, opts, ",", 1)))
			goto_out;

		switch (action) {
			case OPTS_ADD:
				dm_list_splice(final_opts_list[idx], opts_list);
				break;
			case OPTS_REMOVE:
				dm_list_iterate_items(sl, opts_list)
					_del_option_from_list(final_opts_list[idx], args->single_args[idx].report_prefix,
							      strlen(args->single_args[idx].report_prefix), sl->str);
				break;
			case OPTS_COMPACT:
				args->single_args[idx].fields_to_compact = opts;
				break;
			case OPTS_REPLACE:
				final_opts_list[idx] = opts_list;
				break;
		}
	}

	if (single_args->report_type == CMDLOG) {
		if (!(single_args->options = str_list_to_str(cmd->mem, final_opts_list[REPORT_IDX_LOG], ",")))
			goto_out;
	} else if (single_args->report_type == FULL) {
		if (!(args->single_args[REPORT_IDX_FULL_VGS].options = str_list_to_str(cmd->mem, final_opts_list[REPORT_IDX_FULL_VGS], ",")) ||
		    !(args->single_args[REPORT_IDX_FULL_PVS].options = str_list_to_str(cmd->mem, final_opts_list[REPORT_IDX_FULL_PVS], ",")) ||
		    !(args->single_args[REPORT_IDX_FULL_LVS].options = str_list_to_str(cmd->mem, final_opts_list[REPORT_IDX_FULL_LVS], ",")) ||
		    !(args->single_args[REPORT_IDX_FULL_PVSEGS].options = str_list_to_str(cmd->mem, final_opts_list[REPORT_IDX_FULL_PVSEGS], ",")) ||
		    !(args->single_args[REPORT_IDX_FULL_SEGS].options = str_list_to_str(cmd->mem, final_opts_list[REPORT_IDX_FULL_SEGS], ",")))
			goto_out;
	} else {
		if (!(single_args->options = str_list_to_str(cmd->mem, final_opts_list[REPORT_IDX_SINGLE], ",")))
			goto_out;
	}

	r = ECMD_PROCESSED;
out:
	dm_pool_destroy(mem);
	return r;
}

static int _get_report_keys(struct cmd_context *cmd,
			    struct report_args *args,
			    struct single_report_args *single_args)
{
	struct arg_value_group_list *current_group;
	const char *report_name = NULL;
	report_idx_t idx = REPORT_IDX_SINGLE;
	int r = ECMD_FAILED;

	dm_list_iterate_items(current_group, &cmd->arg_value_groups) {
		if (!grouped_arg_is_set(current_group->arg_values, sort_ARG))
			continue;

		if (grouped_arg_is_set(current_group->arg_values, configreport_ARG)) {
			report_name = grouped_arg_str_value(current_group->arg_values, configreport_ARG, NULL);
			if ((idx = _get_report_idx_from_name(single_args->report_type, report_name)) == REPORT_IDX_NULL)
				goto_out;
		}

		if (!_should_process_report_idx(single_args->report_type, !(single_args->report_type & (CMDLOG | FULL)), idx))
			continue;

		args->single_args[idx].keys = grouped_arg_str_value(current_group->arg_values, sort_ARG, NULL);
	}

	r = ECMD_PROCESSED;
out:
	return r;
}

static int _do_report_get_selection(struct cmd_context *cmd,
				    report_type_t report_type,
				    int allow_single,
				    struct report_args *args,
				    const char **last_selection)
{
	struct arg_value_group_list *current_group;
	const char *final_selection = NULL, *selection = NULL;
	const char *report_name = NULL;
	report_idx_t idx = REPORT_IDX_SINGLE;

	dm_list_iterate_items(current_group, &cmd->arg_value_groups) {
		if (!grouped_arg_is_set(current_group->arg_values, select_ARG))
			continue;

		if (grouped_arg_is_set(current_group->arg_values, configreport_ARG)) {
			report_name = grouped_arg_str_value(current_group->arg_values, configreport_ARG, NULL);
			if ((idx = _get_report_idx_from_name(report_type, report_name)) == REPORT_IDX_NULL)
				return_0;
		}

		selection = grouped_arg_str_value(current_group->arg_values, select_ARG, NULL);

		if (!_should_process_report_idx(report_type, allow_single, idx))
			continue;
		if (args)
			args->single_args[idx].selection = selection;
		final_selection = selection;
	}

	if (last_selection)
		*last_selection = final_selection;

	return 1;
}

static int _get_report_selection(struct cmd_context *cmd,
				 struct report_args *args,
				 struct single_report_args *single_args)
{
	return _do_report_get_selection(cmd, single_args->report_type, !(single_args->report_type & (CMDLOG | FULL)),
					args, NULL) ? ECMD_PROCESSED : ECMD_FAILED;
}

int report_get_single_selection(struct cmd_context *cmd, report_type_t report_type, const char **selection)
{
	return _do_report_get_selection(cmd, report_type, 1, NULL, selection);
}

static int _set_report_prefix_and_name(struct report_args *args,
				       struct single_report_args *single_args)
{
	const char *report_prefix, *report_desc;
	size_t len;

	if (single_args->report_type == FULL) {
		single_args->report_prefix[0] = '\0';
		single_args->report_name = single_args->report_prefix;
		return 1;
	}

	(void) report_get_prefix_and_desc(single_args->report_type,
					  &report_prefix, &report_desc);
	len = strlen(report_prefix);
	if (report_prefix[len - 1] == '_')
		len--;

	if (!len) {
		log_error(INTERNAL_ERROR "_set_report_prefix_and_name: no prefix "
			  "found for report type 0x%x", single_args->report_type);
		return 0;
	}

	if (!dm_strncpy(single_args->report_prefix, report_prefix, sizeof(single_args->report_prefix))) {
		log_error("_set_report_prefix_and_name: dm_strncpy failed");
		return 0;
	}
	single_args->report_prefix[len] = '\0';

	if (args->report_group_type != DM_REPORT_GROUP_BASIC)
		single_args->report_name = single_args->report_prefix;
	else
		single_args->report_name = report_desc;

	return 1;
}

static int _do_report(struct cmd_context *cmd, struct processing_handle *handle,
		      struct report_args *args, struct single_report_args *single_args)
{
	void *orig_custom_handle = handle->custom_handle;
	report_type_t report_type = single_args->report_type;
	void *report_handle = NULL;
	int lv_info_needed;
	int lv_segment_status_needed;
	int report_in_group = 0;
	int r = ECMD_FAILED;

	if (!(report_handle = report_init(cmd, single_args->options, single_args->keys, &report_type,
					  args->separator, args->aligned, args->buffered,
					  args->headings, args->field_prefixes, args->quoted,
					  args->columns_as_rows, single_args->selection, 0)))
		goto_out;

	handle->custom_handle = report_handle;

	if (!_get_final_report_type(args, single_args, report_type, &lv_info_needed,
				    &lv_segment_status_needed, &report_type))
		goto_out;

	if (!(args->log_only && (single_args->report_type != CMDLOG))) {
		if (!dm_report_group_push(cmd->cmd_report.report_group, report_handle, (void *) single_args->report_name))
			goto_out;
		report_in_group = 1;
	}

	switch (report_type) {
		case DEVTYPES:
			r = _process_each_devtype(cmd, args->argc, handle);
			break;
		case LVSINFO:
			/* fall through */
		case LVSSTATUS:
			/* fall through */
		case LVSINFOSTATUS:
			/* fall through */
		case LVS:
			if (args->full_report_vg)
				r = _report_all_in_vg(cmd, handle, args->full_report_vg, LVS, lv_info_needed, lv_segment_status_needed);
			else
				r = process_each_lv(cmd, args->argc, args->argv, NULL, NULL, 0, handle, NULL,
						    lv_info_needed && !lv_segment_status_needed ? &_lvs_with_info_single :
						    !lv_info_needed && lv_segment_status_needed ? &_lvs_with_status_single :
						    lv_info_needed && lv_segment_status_needed ? &_lvs_with_info_and_status_single :
												 &_lvs_single);
			break;
		case VGS:
			if (args->full_report_vg)
				r = _report_all_in_vg(cmd, handle, args->full_report_vg, VGS, lv_info_needed, lv_segment_status_needed);
			else
				r = process_each_vg(cmd, args->argc, args->argv, NULL, NULL,
						    0, 0, handle, &_vgs_single);
			break;
		case LABEL:
			r = process_each_label(cmd, args->argc, args->argv,
					       handle, &_label_single);
			break;
		case PVS:
			if (args->full_report_vg)
				r = _report_all_in_vg(cmd, handle, args->full_report_vg, PVS, lv_info_needed, lv_segment_status_needed);
			else {
				if (single_args->args_are_pvs)
					r = process_each_pv(cmd, args->argc, args->argv, NULL,
							    arg_is_set(cmd, all_ARG), 0,
							    handle, &_pvs_single);
				else
					r = process_each_vg(cmd, args->argc, args->argv, NULL, NULL,
							    0, 0, handle, &_pvs_in_vg);
			}
			break;
		case SEGS:
			if (args->full_report_vg)
				r = _report_all_in_vg(cmd, handle, args->full_report_vg, SEGS, lv_info_needed, lv_segment_status_needed);
			else
				r = process_each_lv(cmd, args->argc, args->argv, NULL, NULL, 0, handle, NULL,
						    lv_info_needed && !lv_segment_status_needed ? &_lvsegs_with_info_single :
						    !lv_info_needed && lv_segment_status_needed ? &_lvsegs_with_status_single :
						    lv_info_needed && lv_segment_status_needed ? &_lvsegs_with_info_and_status_single :
												 &_lvsegs_single);
			break;
		case PVSEGS:
			if (args->full_report_vg)
				r = _report_all_in_vg(cmd, handle, args->full_report_vg, PVSEGS, lv_info_needed, lv_segment_status_needed);
			else {
				if (single_args->args_are_pvs)
					r = process_each_pv(cmd, args->argc, args->argv, NULL,
							    arg_is_set(cmd, all_ARG), 0,
							    handle,
							    lv_info_needed && !lv_segment_status_needed ? &_pvsegs_with_lv_info_single :
							    !lv_info_needed && lv_segment_status_needed ? &_pvsegs_with_lv_status_single :
							    lv_info_needed && lv_segment_status_needed ? &_pvsegs_with_lv_info_and_status_single :
												 &_pvsegs_single);
				else
					r = process_each_vg(cmd, args->argc, args->argv, NULL, NULL,
							    0, 0, handle, &_pvsegs_in_vg);
			}
			break;
		case FULL:
			/*
			 * Full report's subreports already covered by combinations above with args->full_report_vg.
			 * We shouldn't see report_type == FULL in this function.
			 */
			log_error(INTERNAL_ERROR "_do_report: full report requested at incorrect level");
			break;
		case CMDLOG:
			/* Log is reported throughout the code via report_cmdlog calls. */
			break;
		default:
			log_error(INTERNAL_ERROR "_do_report: unknown report type.");
			return 0;
	}

	if (find_config_tree_bool(cmd, report_compact_output_CFG, NULL)) {
		if (!dm_report_compact_fields(report_handle))
			log_error("Failed to compact report output.");
	} else if (single_args->fields_to_compact) {
		if (!dm_report_compact_given_fields(report_handle, single_args->fields_to_compact))
			log_error("Failed to compact given columns in report output.");
	}

	if (!(args->log_only && (single_args->report_type != CMDLOG)))
		dm_report_output(report_handle);

out:
	if (report_handle) {
		if (report_in_group && !dm_report_group_pop(cmd->cmd_report.report_group))
			stack;
		dm_report_free(report_handle);
	}

	handle->custom_handle = orig_custom_handle;
	return r;
}

static int _full_report_single(struct cmd_context *cmd,
			       const char *vg_name,
			       struct volume_group *vg,
			       struct processing_handle *handle)
{
	struct report_args *args = (struct report_args *) handle->custom_handle;
	int orphan = is_orphan_vg(vg->name);
	int r = ECMD_FAILED;

	if (orphan && dm_list_empty(&vg->pvs))
		return ECMD_PROCESSED;

	args->full_report_vg = vg;

	if (!args->log_only && !dm_report_group_push(cmd->cmd_report.report_group, NULL, NULL))
		goto out;

	if (orphan) {
		if (((r = _do_report(cmd, handle, args, &args->single_args[REPORT_IDX_FULL_PVS])) != ECMD_PROCESSED) ||
		    ((r = _do_report(cmd, handle, args, &args->single_args[REPORT_IDX_FULL_PVSEGS])) != ECMD_PROCESSED))
			stack;
	} else {
		if (((r = _do_report(cmd, handle, args, &args->single_args[REPORT_IDX_FULL_VGS])) != ECMD_PROCESSED) ||
		    ((r = _do_report(cmd, handle, args, &args->single_args[REPORT_IDX_FULL_PVS])) != ECMD_PROCESSED) ||
		    ((r = _do_report(cmd, handle, args, &args->single_args[REPORT_IDX_FULL_LVS])) != ECMD_PROCESSED) ||
		    ((r = _do_report(cmd, handle, args, &args->single_args[REPORT_IDX_FULL_PVSEGS])) != ECMD_PROCESSED) ||
		    ((r = _do_report(cmd, handle, args, &args->single_args[REPORT_IDX_FULL_SEGS])) != ECMD_PROCESSED))
			stack;
	}

	if (!args->log_only && !dm_report_group_pop(cmd->cmd_report.report_group))
		goto_out;
out:
	args->full_report_vg = NULL;
	return r;
}

#define _set_full_report_single(cmd,args,type,name) \
	do { \
		(args)->single_args[REPORT_IDX_FULL_ ## type].report_type = type; \
		(args)->single_args[REPORT_IDX_FULL_ ## type].keys = find_config_tree_str(cmd, report_ ## name ## _sort_full_CFG, NULL); \
		(args)->single_args[REPORT_IDX_FULL_ ## type].options = find_config_tree_str(cmd, report_ ## name ## _cols_full_CFG, NULL); \
		if (!_set_report_prefix_and_name((args), &(args)->single_args[REPORT_IDX_FULL_ ## type])) \
			return_0; \
	} while (0)

static int _config_report(struct cmd_context *cmd, struct report_args *args, struct single_report_args *single_args)
{
	args->aligned = find_config_tree_bool(cmd, report_aligned_CFG, NULL);
	args->buffered = find_config_tree_bool(cmd, report_buffered_CFG, NULL);
	args->headings = find_config_tree_bool(cmd, report_headings_CFG, NULL);
	args->separator = find_config_tree_str(cmd, report_separator_CFG, NULL);
	args->field_prefixes = find_config_tree_bool(cmd, report_prefixes_CFG, NULL);
	args->quoted = find_config_tree_bool(cmd, report_quoted_CFG, NULL);
	args->columns_as_rows = find_config_tree_bool(cmd, report_columns_as_rows_CFG, NULL);

	/* Check PV specifics and do extra changes/actions if needed. */
	_check_pv_list(cmd, args, single_args);

	if (!_set_report_prefix_and_name(args, single_args))
		return_0;

	switch (single_args->report_type) {
		case DEVTYPES:
			single_args->keys = find_config_tree_str(cmd, report_devtypes_sort_CFG, NULL);
			if (!arg_is_set(cmd, verbose_ARG))
				single_args->options = find_config_tree_str(cmd, report_devtypes_cols_CFG, NULL);
			else
				single_args->options = find_config_tree_str(cmd, report_devtypes_cols_verbose_CFG, NULL);
			break;
		case LVS:
			single_args->keys = find_config_tree_str(cmd, report_lvs_sort_CFG, NULL);
			if (!arg_is_set(cmd, verbose_ARG))
				single_args->options = find_config_tree_str(cmd, report_lvs_cols_CFG, NULL);
			else
				single_args->options = find_config_tree_str(cmd, report_lvs_cols_verbose_CFG, NULL);
			break;
		case VGS:
			single_args->keys = find_config_tree_str(cmd, report_vgs_sort_CFG, NULL);
			if (!arg_is_set(cmd, verbose_ARG))
				single_args->options = find_config_tree_str(cmd, report_vgs_cols_CFG, NULL);
			else
				single_args->options = find_config_tree_str(cmd, report_vgs_cols_verbose_CFG, NULL);
			break;
		case LABEL:
		case PVS:
			single_args->keys = find_config_tree_str(cmd, report_pvs_sort_CFG, NULL);
			if (!arg_is_set(cmd, verbose_ARG))
				single_args->options = find_config_tree_str(cmd, report_pvs_cols_CFG, NULL);
			else
				single_args->options = find_config_tree_str(cmd, report_pvs_cols_verbose_CFG, NULL);
			break;
		case SEGS:
			single_args->keys = find_config_tree_str(cmd, report_segs_sort_CFG, NULL);
			if (!arg_is_set(cmd, verbose_ARG))
				single_args->options = find_config_tree_str(cmd, report_segs_cols_CFG, NULL);
			else
				single_args->options = find_config_tree_str(cmd, report_segs_cols_verbose_CFG, NULL);
			break;
		case PVSEGS:
			single_args->keys = find_config_tree_str(cmd, report_pvsegs_sort_CFG, NULL);
			if (!arg_is_set(cmd, verbose_ARG))
				single_args->options = find_config_tree_str(cmd, report_pvsegs_cols_CFG, NULL);
			else
				single_args->options = find_config_tree_str(cmd, report_pvsegs_cols_verbose_CFG, NULL);
			break;
		case FULL:
			_set_full_report_single(cmd, args, VGS, vgs);
			_set_full_report_single(cmd, args, LVS, lvs);
			_set_full_report_single(cmd, args, PVS, pvs);
			_set_full_report_single(cmd, args, PVSEGS, pvsegs);
			_set_full_report_single(cmd, args, SEGS, segs);
			break;
		case CMDLOG:
			single_args->keys = find_config_tree_str(cmd, log_command_log_sort_CFG, NULL);
			single_args->options = find_config_tree_str(cmd, log_command_log_cols_CFG, NULL);
			single_args->selection = find_config_tree_str(cmd, log_command_log_selection_CFG, NULL);
			break;
		default:
			log_error(INTERNAL_ERROR "_report: unknown report type.");
			return 0;
	}

	if (single_args->report_type != FULL)
		single_args->fields_to_compact = find_config_tree_str_allow_empty(cmd, report_compact_output_cols_CFG, NULL);

	/* If -o supplied use it, else use default for report_type */
	if ((_get_report_options(cmd, args, single_args) != ECMD_PROCESSED))
		return_0;

	/* -O overrides default sort settings */
	if ((_get_report_keys(cmd, args, single_args) != ECMD_PROCESSED))
		return_0;

	if ((_get_report_selection(cmd, args, single_args) != ECMD_PROCESSED))
		return_0;

	args->separator = arg_str_value(cmd, separator_ARG, args->separator);
	if (arg_is_set(cmd, separator_ARG))
		args->aligned = 0;
	if (arg_is_set(cmd, aligned_ARG))
		args->aligned = 1;
	if (arg_is_set(cmd, unbuffered_ARG) && !arg_is_set(cmd, sort_ARG))
		args->buffered = 0;
	if (arg_is_set(cmd, noheadings_ARG))
		args->headings = 0;
	if (arg_is_set(cmd, nameprefixes_ARG)) {
		args->aligned = 0;
		args->field_prefixes = 1;
	}
	if (arg_is_set(cmd, unquoted_ARG))
		args->quoted = 0;
	if (arg_is_set(cmd, rows_ARG))
		args->columns_as_rows = 1;

	return 1;
}

static int _report(struct cmd_context *cmd, int argc, char **argv, report_type_t report_type)
{
	struct report_args args = {0};
	struct single_report_args *single_args = &args.single_args[REPORT_IDX_SINGLE];
	static char report_name[] = "report";
	struct processing_handle *handle;
	int r;

	/*
	 * Include foreign VGs that contain active LVs.
	 * That shouldn't happen in general, but if it does by some
	 * mistake, then we want to display those VGs and allow the
	 * LVs to be deactivated.
	 */
	cmd->include_active_foreign_vgs = 1;

	args.argc = argc;
	args.argv = argv;
	single_args->report_type = report_type;

	if (!(handle = init_processing_handle(cmd, NULL)))
		return_ECMD_FAILED;

	handle->internal_report_for_select = 0;
	handle->include_historical_lvs = cmd->include_historical_lvs;

	args.report_group_type = cmd->cmd_report.report_group_type;
	args.log_only = cmd->cmd_report.log_only;

	if (!_config_report(cmd, &args, single_args)) {
		destroy_processing_handle(cmd, handle);
		return_ECMD_FAILED;
	}

	if (!args.log_only && !dm_report_group_push(cmd->cmd_report.report_group, NULL, report_name)) {
		log_error("Failed to add main report section to report group.");
		destroy_processing_handle(cmd, handle);
		return ECMD_FAILED;
	}

	if (single_args->report_type == FULL) {
		handle->custom_handle = &args;
		r = process_each_vg(cmd, argc, argv, NULL, NULL, 0, 1, handle, &_full_report_single);
	} else
		r = _do_report(cmd, handle, &args, single_args);

	if (!args.log_only && !dm_report_group_pop(cmd->cmd_report.report_group)) {
		log_error("Failed to finalize main report section in report group.");
		r = ECMD_FAILED;
	}

	destroy_processing_handle(cmd, handle);
	return r;
}

int lvs(struct cmd_context *cmd, int argc, char **argv)
{
	report_type_t type;

	if (arg_is_set(cmd, segments_ARG))
		type = SEGS;
	else
		type = LVS;

	return _report(cmd, argc, argv, type);
}

int vgs(struct cmd_context *cmd, int argc, char **argv)
{
	return _report(cmd, argc, argv, VGS);
}

int pvs(struct cmd_context *cmd, int argc, char **argv)
{
	report_type_t type;

	/*
	 * Without -a, command only looks at PVs and can use hints,
	 * with -a, the command looks at all (non-hinted) devices.
	 */
	if (arg_is_set(cmd, all_ARG))
		cmd->use_hints = 0;

	if (arg_is_set(cmd, segments_ARG))
		type = PVSEGS;
	else
		type = LABEL;

	return _report(cmd, argc, argv, type);
}

int fullreport(struct cmd_context *cmd, int argc, char **argv)
{
	return _report(cmd, argc, argv, FULL);
}

int devtypes(struct cmd_context *cmd, int argc, char **argv)
{
	return _report(cmd, argc, argv, DEVTYPES);
}

#define REPORT_FORMAT_NAME_BASIC "basic"
#define REPORT_FORMAT_NAME_JSON "json"
#define REPORT_FORMAT_NAME_JSON_STD "json_std"

int report_format_init(struct cmd_context *cmd)
{
	int config_set = find_config_tree_node(cmd, report_output_format_CFG, NULL) != NULL;
	const char *config_format_str = find_config_tree_str(cmd, report_output_format_CFG, NULL);
	const char *format_str = arg_str_value(cmd, reportformat_ARG, config_set ? config_format_str : NULL);
	int report_command_log;
	struct report_args args = {0};
	struct single_report_args *single_args;
	struct dm_report_group *new_report_group;
	struct dm_report *tmp_log_rh = NULL;

	args.log_only = arg_is_set(cmd, logonly_ARG);
	report_command_log = args.log_only || find_config_tree_bool(cmd, log_report_command_log_CFG, NULL);

	if (!format_str || !strcmp(format_str, REPORT_FORMAT_NAME_BASIC)) {
		args.report_group_type = (report_command_log && !args.log_only) ? DM_REPORT_GROUP_BASIC
										: DM_REPORT_GROUP_SINGLE;
	} else if (!strcmp(format_str, REPORT_FORMAT_NAME_JSON)) {
		args.report_group_type = DM_REPORT_GROUP_JSON;
	} else if (!strcmp(format_str, REPORT_FORMAT_NAME_JSON_STD)) {
		args.report_group_type = DM_REPORT_GROUP_JSON_STD;
	} else {
		log_error("%s: unknown report format.", format_str);
		log_error("Supported report formats: %s, %s, %s.",
			  REPORT_FORMAT_NAME_BASIC,
			  REPORT_FORMAT_NAME_JSON,
			  REPORT_FORMAT_NAME_JSON_STD);
		return 0;
	}

	cmd->cmd_report.report_group_type = args.report_group_type;
	cmd->cmd_report.log_only = args.log_only;

	if (!(new_report_group = dm_report_group_create(args.report_group_type, NULL))) {
		log_error("Failed to create report group.");
		return 0;
	}

	/*
	 * JSON_STD requires strict type mode. That means all NUM and BIN
	 * fields are always reported as numeric values and not strings which
	 * are synonyms to these numeric values.
	 */
	if (args.report_group_type == DM_REPORT_GROUP_JSON_STD)
		cmd->report_strict_type_mode = 1;
	else
		cmd->report_strict_type_mode = 0;

	if (report_command_log) {
		single_args = &args.single_args[REPORT_IDX_LOG];
		single_args->report_type = CMDLOG;

		if (!_config_report(cmd, &args, single_args))
			goto_bad;

		if (!(tmp_log_rh = report_init(NULL, single_args->options, single_args->keys, &single_args->report_type,
						  args.separator, args.aligned, args.buffered, args.headings,
						  args.field_prefixes, args.quoted, args.columns_as_rows,
						  single_args->selection, 1))) {
			log_error("Failed to create log report.");
			goto bad;
		}

		if (!(dm_report_group_push(new_report_group, tmp_log_rh, (void *) single_args->report_name))) {
			log_error("Failed to add log report to report group.");
			goto bad;
		}

		cmd->cmd_report.log_rh = tmp_log_rh;
		if (!(cmd->cmd_report.log_name = dm_pool_strdup(cmd->libmem, single_args->report_name))) {
			log_error("Failed to set log report name for command context.");
			goto bad;
		}
	}

	cmd->cmd_report.report_group = new_report_group;
	cmd->cmd_report.saved_log_report_state = log_get_report_state();
	log_set_report(cmd->cmd_report.log_rh);

	return 1;
bad:
	if (!dm_report_group_destroy(new_report_group))
		stack;
	if (tmp_log_rh)
		dm_report_free(tmp_log_rh);
	return 0;
}

int lastlog(struct cmd_context *cmd, int argc __attribute((unused)), char **argv __attribute__((unused)))
{
	const char *selection;

	if (!cmd->cmd_report.log_rh) {
		log_error("No log report stored.");
		return ECMD_FAILED;
	}

	if (!_do_report_get_selection(cmd, CMDLOG, 1, NULL, &selection))
		return_ECMD_FAILED;

	if (!dm_report_set_selection(cmd->cmd_report.log_rh, selection)) {
		log_error("Failed to set selection for log report.");
		return ECMD_FAILED;
	}

	return ECMD_PROCESSED;
}
