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lvm2/tools/lvdisplay.c
David Teigland 9c6c55c314 process_each_lv: add check_single_lv function
The new check_single_lv() function is called prior to the
existing process_single_lv().  If the check function returns 0,
the LV will not be processed.

The check_single_lv function is meant to be a standard method
to validate the combination of specific command + specific LV,
and decide if the combination is allowed.  The check_single
function can be used by anything that calls process_each_lv.

As commands are migrated to take advantage of command
definitions, each command definition gets its own entry
point which calls process_each for itself, passing a
pair of check_single/process_single functions which can
be specific to the narrowly defined command def.
2017-02-13 08:20:10 -06:00

63 lines
1.9 KiB
C

/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2014 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"
static int _lvdisplay_single(struct cmd_context *cmd, struct logical_volume *lv,
struct processing_handle *handle __attribute__ ((unused)))
{
if (!arg_is_set(cmd, all_ARG) && !lv_is_visible(lv))
return ECMD_PROCESSED;
if (arg_is_set(cmd, colon_ARG))
lvdisplay_colons(lv);
else {
lvdisplay_full(cmd, lv, NULL);
if (arg_is_set(cmd, maps_ARG))
lvdisplay_segments(lv);
}
return ECMD_PROCESSED;
}
int lvdisplay(struct cmd_context *cmd, int argc, char **argv)
{
if (arg_is_set(cmd, columns_ARG)) {
if (arg_is_set(cmd, colon_ARG) || arg_is_set(cmd, maps_ARG)) {
log_error("Incompatible options selected");
return EINVALID_CMD_LINE;
}
return lvs(cmd, argc, argv);
}
if (arg_is_set(cmd, aligned_ARG) ||
arg_is_set(cmd, binary_ARG) ||
arg_is_set(cmd, noheadings_ARG) ||
arg_is_set(cmd, options_ARG) ||
arg_is_set(cmd, separator_ARG) ||
arg_is_set(cmd, sort_ARG) ||
arg_is_set(cmd, unbuffered_ARG)) {
log_error("Incompatible options selected.");
return EINVALID_CMD_LINE;
}
if (arg_is_set(cmd, colon_ARG) && arg_is_set(cmd, maps_ARG)) {
log_error("Options -c and -m are incompatible.");
return EINVALID_CMD_LINE;
}
return process_each_lv(cmd, argc, argv, NULL, NULL, 0, NULL, NULL, &_lvdisplay_single);
}