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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.
38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
/*
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* Copyright (C) 2003-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2006 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 _vgmknodes_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, refresh_ARG) && lv_is_visible(lv))
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if (!lv_refresh(cmd, lv))
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return_ECMD_FAILED;
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if (!lv_mknodes(cmd, lv))
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return_ECMD_FAILED;
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return ECMD_PROCESSED;
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}
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int vgmknodes(struct cmd_context *cmd, int argc, char **argv)
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{
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if (!lv_mknodes(cmd, NULL))
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return_ECMD_FAILED;
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return process_each_lv(cmd, argc, argv, NULL, NULL, LCK_VG_READ, NULL, NULL, &_vgmknodes_single);
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}
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