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lvm2/tools/reporter.c
Alasdair G Kergon dfe3eb12d0 include: Standardise around new tool.h.
2015-07-06 17:30:18 +01:00

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/*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "tools.h"
#include "report.h"
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 void _choose_lv_segment_for_status_report(const struct logical_volume *lv, const struct lv_segment **lv_seg)
{
/*
* By default, take the first LV segment to report status for.
* If there's any other specific segment that needs to be
* reported instead for the LV, choose it here and assign it
* to lvdm->seg_status->seg. This is the segment whose
* status line will be used for report exactly.
*/
*lv_seg = first_seg(lv);
}
static int _do_info_and_status(struct cmd_context *cmd,
const struct logical_volume *lv,
const struct lv_segment *lv_seg,
struct lv_with_info_and_seg_status *status,
int do_info, int do_status)
{
unsigned use_layer = lv_is_thin_pool(lv) ? 1 : 0;
status->lv = lv;
if (do_status) {
if (!(status->seg_status.mem = dm_pool_create("reporter_pool", 1024)))
return_0;
if (!lv_seg)
_choose_lv_segment_for_status_report(lv, &lv_seg);
if (do_info) {
/* both info and status */
status->info_ok = lv_info_with_seg_status(cmd, lv, lv_seg, use_layer, status, 1, 1);
/* for inactive thin-pools reset lv info struct */
if (use_layer && status->info_ok &&
!lv_info(cmd, lv, 0, NULL, 0, 0))
memset(&status->info, 0, sizeof(status->info));
} else
/* status only */
status->info_ok = lv_status(cmd, lv_seg, use_layer, &status->seg_status);
} else if (do_info)
/* info only */
status->info_ok = lv_info(cmd, lv, use_layer, &status->info, 1, 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;
if (!_do_info_and_status(cmd, lv, NULL, &status, do_info, do_status))
goto_out;
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;
if (!_do_info_and_status(cmd, seg->lv, seg, &status, do_info, do_status))
goto_out;
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_count(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_count(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_count(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_count(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 = {
.name = "free",
.flags = SEG_VIRTUAL | SEG_CANNOT_BE_ZEROED,
};
struct volume_group _free_vg = {
.cmd = cmd,
.name = "",
.pvs = DM_LIST_HEAD_INIT(_free_vg.pvs),
.lvs = DM_LIST_HEAD_INIT(_free_vg.lvs),
.tags = DM_LIST_HEAD_INIT(_free_vg.tags),
};
struct logical_volume _free_logical_volume = {
.vg = vg ?: &_free_vg,
.name = "",
.status = VISIBLE_LV,
.major = -1,
.minor = -1,
.tags = DM_LIST_HEAD_INIT(_free_logical_volume.tags),
.segments = DM_LIST_HEAD_INIT(_free_logical_volume.segments),
.segs_using_this_lv = DM_LIST_HEAD_INIT(_free_logical_volume.segs_using_this_lv),
.snapshot_segs = DM_LIST_HEAD_INIT(_free_logical_volume.snapshot_segs),
};
struct lv_segment _free_lv_segment = {
.lv = &_free_logical_volume,
.segtype = &_freeseg_type,
.len = pvseg->len,
.tags = DM_LIST_HEAD_INIT(_free_lv_segment.tags),
.origin_list = DM_LIST_HEAD_INIT(_free_lv_segment.origin_list),
};
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->lv, 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(int args_are_pvs,
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 & (SEGSSTATUS | LVSSTATUS | LVSINFOSTATUS)) ? 1 : 0;
/* Ensure options selected are compatible */
if (report_type & (SEGS | SEGSSTATUS))
report_type |= LVS;
if (report_type & PVSEGS)
report_type |= PVS;
if ((report_type & (LVS | LVSINFO | LVSSTATUS | LVSINFOSTATUS)) &&
(report_type & (PVS | LABEL)) && !args_are_pvs) {
log_error("Can't report LV and PV fields at the same time");
return 0;
}
/* Change report type if fields specified makes this necessary */
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 | SEGSSTATUS))
report_type = SEGS;
else if (report_type & (LVS | LVSINFO | LVSSTATUS | LVSINFOSTATUS))
report_type = LVS;
*final_report_type = report_type;
return 1;
}
int report_for_selection(struct cmd_context *cmd,
struct selection_handle *sh,
struct physical_volume *pv,
struct volume_group *vg,
struct logical_volume *lv)
{
static const char *incorrect_report_type_msg = "report_for_selection: incorrect report type";
int args_are_pvs = sh->orig_report_type == PVS;
int do_lv_info, do_lv_seg_status;
struct processing_handle *handle;
int r = 0;
if (!_get_final_report_type(args_are_pvs,
sh->orig_report_type | sh->report_type,
&do_lv_info,
&do_lv_seg_status,
&sh->report_type))
return_0;
if (!(handle = init_processing_handle(cmd)))
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:
switch (sh->report_type) {
case LVS:
r = _do_lvs_with_info_and_status_single(vg->cmd, lv, do_lv_info, do_lv_seg_status, handle);
break;
case SEGS:
r = process_each_segment_in_lv(vg->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 "%s for LVS", incorrect_report_type_msg);
break;
}
break;
case VGS:
switch (sh->report_type) {
case VGS:
r = _vgs_single(vg->cmd, vg->name, vg, handle);
break;
case LVS:
r = process_each_lv_in_vg(vg->cmd, vg, NULL, NULL, 0, handle,
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(vg->cmd, vg, NULL, NULL, 0, handle,
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(vg->cmd, vg, handle, &_pvs_single);
break;
case PVSEGS:
r = process_each_pv_in_vg(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 "%s for VGS", incorrect_report_type_msg);
break;
}
break;
case PVS:
switch (sh->report_type) {
case PVS:
r = _pvs_single(vg->cmd, vg, pv, handle);
break;
case PVSEGS:
r = process_each_segment_in_pv(vg->cmd, 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 "%s for PVS", incorrect_report_type_msg);
break;
}
break;
default:
log_error(INTERNAL_ERROR "%s", incorrect_report_type_msg);
break;
}
/*
* 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, int argc, char **argv,
report_type_t *report_type, unsigned *args_are_pvs)
{
unsigned i;
int rescan_done = 0;
*args_are_pvs = (*report_type == PVS ||
*report_type == LABEL ||
*report_type == PVSEGS) ? 1 : 0;
if (*args_are_pvs && argc) {
for (i = 0; i < argc; i++) {
if (!rescan_done && !dev_cache_get(argv[i], cmd->full_filter)) {
cmd->filter->wipe(cmd->filter);
/* FIXME scan only one device */
lvmcache_label_scan(cmd, 0);
rescan_done = 1;
}
if (*argv[i] == '@') {
/*
* Tags are metadata related, not label
* related, change report type accordingly!
*/
if (*report_type == LABEL)
*report_type = PVS;
/*
* If we changed the report_type and we did rescan,
* no need to iterate over dev list further - nothing
* else would change.
*/
if (rescan_done)
break;
}
}
}
}
static int _report(struct cmd_context *cmd, int argc, char **argv,
report_type_t report_type)
{
void *report_handle;
struct processing_handle handle = {0};
const char *opts;
char *str;
const char *keys = NULL, *options = NULL, *selection = NULL, *separator;
int r = ECMD_PROCESSED;
int aligned, buffered, headings, field_prefixes, quoted;
int columns_as_rows;
unsigned args_are_pvs;
int lv_info_needed, lv_segment_status_needed;
int lock_global = 0;
aligned = find_config_tree_bool(cmd, report_aligned_CFG, NULL);
buffered = find_config_tree_bool(cmd, report_buffered_CFG, NULL);
headings = find_config_tree_bool(cmd, report_headings_CFG, NULL);
separator = find_config_tree_str(cmd, report_separator_CFG, NULL);
field_prefixes = find_config_tree_bool(cmd, report_prefixes_CFG, NULL);
quoted = find_config_tree_bool(cmd, report_quoted_CFG, NULL);
columns_as_rows = find_config_tree_bool(cmd, report_colums_as_rows_CFG, NULL);
/*
* 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;
/* Check PV specifics and do extra changes/actions if needed. */
_check_pv_list(cmd, argc, argv, &report_type, &args_are_pvs);
switch (report_type) {
case DEVTYPES:
keys = find_config_tree_str(cmd, report_devtypes_sort_CFG, NULL);
if (!arg_count(cmd, verbose_ARG))
options = find_config_tree_str(cmd, report_devtypes_cols_CFG, NULL);
else
options = find_config_tree_str(cmd, report_devtypes_cols_verbose_CFG, NULL);
break;
case LVS:
keys = find_config_tree_str(cmd, report_lvs_sort_CFG, NULL);
if (!arg_count(cmd, verbose_ARG))
options = find_config_tree_str(cmd, report_lvs_cols_CFG, NULL);
else
options = find_config_tree_str(cmd, report_lvs_cols_verbose_CFG, NULL);
break;
case VGS:
keys = find_config_tree_str(cmd, report_vgs_sort_CFG, NULL);
if (!arg_count(cmd, verbose_ARG))
options = find_config_tree_str(cmd, report_vgs_cols_CFG, NULL);
else
options = find_config_tree_str(cmd, report_vgs_cols_verbose_CFG, NULL);
break;
case LABEL:
case PVS:
keys = find_config_tree_str(cmd, report_pvs_sort_CFG, NULL);
if (!arg_count(cmd, verbose_ARG))
options = find_config_tree_str(cmd, report_pvs_cols_CFG, NULL);
else
options = find_config_tree_str(cmd, report_pvs_cols_verbose_CFG, NULL);
break;
case SEGS:
keys = find_config_tree_str(cmd, report_segs_sort_CFG, NULL);
if (!arg_count(cmd, verbose_ARG))
options = find_config_tree_str(cmd, report_segs_cols_CFG, NULL);
else
options = find_config_tree_str(cmd, report_segs_cols_verbose_CFG, NULL);
break;
case PVSEGS:
keys = find_config_tree_str(cmd, report_pvsegs_sort_CFG, NULL);
if (!arg_count(cmd, verbose_ARG))
options = find_config_tree_str(cmd, report_pvsegs_cols_CFG, NULL);
else
options = find_config_tree_str(cmd, report_pvsegs_cols_verbose_CFG, NULL);
break;
default:
log_error(INTERNAL_ERROR "Unknown report type.");
return ECMD_FAILED;
}
/* If -o supplied use it, else use default for report_type */
if (arg_count(cmd, options_ARG)) {
opts = arg_str_value(cmd, options_ARG, "");
if (!opts || !*opts) {
log_error("Invalid options string: %s", opts);
return EINVALID_CMD_LINE;
}
if (*opts == '+') {
if (!(str = dm_pool_alloc(cmd->mem,
strlen(options) + strlen(opts) + 1))) {
log_error("options string allocation failed");
return ECMD_FAILED;
}
(void) sprintf(str, "%s,%s", options, opts + 1);
options = str;
} else
options = opts;
}
/* -O overrides default sort settings */
keys = arg_str_value(cmd, sort_ARG, keys);
separator = arg_str_value(cmd, separator_ARG, separator);
if (arg_count(cmd, separator_ARG))
aligned = 0;
if (arg_count(cmd, aligned_ARG))
aligned = 1;
if (arg_count(cmd, unbuffered_ARG) && !arg_count(cmd, sort_ARG))
buffered = 0;
if (arg_count(cmd, noheadings_ARG))
headings = 0;
if (arg_count(cmd, nameprefixes_ARG)) {
aligned = 0;
field_prefixes = 1;
}
if (arg_count(cmd, unquoted_ARG))
quoted = 0;
if (arg_count(cmd, rows_ARG))
columns_as_rows = 1;
if (arg_count(cmd, select_ARG))
selection = arg_str_value(cmd, select_ARG, NULL);
if (!(report_handle = report_init(cmd, options, keys, &report_type,
separator, aligned, buffered,
headings, field_prefixes, quoted,
columns_as_rows, selection)))
return_ECMD_FAILED;
if (!_get_final_report_type(args_are_pvs,
report_type, &lv_info_needed,
&lv_segment_status_needed,
&report_type)) {
dm_report_free(report_handle);
return ECMD_FAILED;
}
/*
* We lock VG_GLOBAL to enable use of metadata cache.
* This can pause alongide pvscan or vgscan process for a while.
*/
if (args_are_pvs && (report_type == PVS || report_type == PVSEGS) &&
!lvmetad_active()) {
lock_global = 1;
if (!lock_vol(cmd, VG_GLOBAL, LCK_VG_READ, NULL)) {
log_error("Unable to obtain global lock.");
dm_report_free(report_handle);
return ECMD_FAILED;
}
}
handle.internal_report_for_select = 0;
handle.custom_handle = report_handle;
switch (report_type) {
case DEVTYPES:
r = _process_each_devtype(cmd, argc, &handle);
break;
case LVSINFO:
/* fall through */
case LVSSTATUS:
/* fall through */
case LVSINFOSTATUS:
/* fall through */
case LVS:
r = process_each_lv(cmd, argc, argv, 0, &handle,
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:
r = process_each_vg(cmd, argc, argv, 0,
&handle, &_vgs_single);
break;
case LABEL:
r = process_each_label(cmd, argc, argv,
&handle, &_label_single);
break;
case PVS:
if (args_are_pvs)
r = process_each_pv(cmd, argc, argv, NULL, 0,
&handle, &_pvs_single);
else
r = process_each_vg(cmd, argc, argv, 0,
&handle, &_pvs_in_vg);
break;
case SEGSSTATUS:
/* fall through */
case SEGS:
r = process_each_lv(cmd, argc, argv, 0, &handle,
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_are_pvs)
r = process_each_pv(cmd, argc, argv, NULL, 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, argc, argv, 0,
&handle, &_pvsegs_in_vg);
break;
}
if (find_config_tree_bool(cmd, report_compact_output_CFG, NULL) &&
!dm_report_compact_fields(report_handle))
log_error("Failed to compact report output.");
dm_report_output(report_handle);
dm_report_free(report_handle);
if (lock_global)
unlock_vg(cmd, VG_GLOBAL);
return r;
}
int lvs(struct cmd_context *cmd, int argc, char **argv)
{
report_type_t type;
if (arg_count(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;
if (arg_count(cmd, segments_ARG))
type = PVSEGS;
else
type = LABEL;
return _report(cmd, argc, argv, type);
}
int devtypes(struct cmd_context *cmd, int argc, char **argv)
{
return _report(cmd, argc, argv, DEVTYPES);
}
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