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9c6c55c314
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.
63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
/*
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* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2014 Red Hat, Inc. All rights reserved.
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*
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* This file is part of LVM2.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU Lesser General Public License v.2.1.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "tools.h"
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static int _lvdisplay_single(struct cmd_context *cmd, struct logical_volume *lv,
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struct processing_handle *handle __attribute__ ((unused)))
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{
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if (!arg_is_set(cmd, all_ARG) && !lv_is_visible(lv))
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return ECMD_PROCESSED;
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if (arg_is_set(cmd, colon_ARG))
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lvdisplay_colons(lv);
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else {
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lvdisplay_full(cmd, lv, NULL);
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if (arg_is_set(cmd, maps_ARG))
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lvdisplay_segments(lv);
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}
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return ECMD_PROCESSED;
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}
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int lvdisplay(struct cmd_context *cmd, int argc, char **argv)
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{
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if (arg_is_set(cmd, columns_ARG)) {
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if (arg_is_set(cmd, colon_ARG) || arg_is_set(cmd, maps_ARG)) {
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log_error("Incompatible options selected");
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return EINVALID_CMD_LINE;
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}
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return lvs(cmd, argc, argv);
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}
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if (arg_is_set(cmd, aligned_ARG) ||
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arg_is_set(cmd, binary_ARG) ||
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arg_is_set(cmd, noheadings_ARG) ||
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arg_is_set(cmd, options_ARG) ||
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arg_is_set(cmd, separator_ARG) ||
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arg_is_set(cmd, sort_ARG) ||
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arg_is_set(cmd, unbuffered_ARG)) {
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log_error("Incompatible options selected.");
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return EINVALID_CMD_LINE;
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}
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if (arg_is_set(cmd, colon_ARG) && arg_is_set(cmd, maps_ARG)) {
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log_error("Options -c and -m are incompatible.");
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return EINVALID_CMD_LINE;
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}
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return process_each_lv(cmd, argc, argv, NULL, NULL, 0, NULL, NULL, &_lvdisplay_single);
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}
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