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66b10d6d12
It's cleaner this way - do not mix static and dynamic (init_processing_handle) initializers. Use the dynamic one everywhere. This makes it easier to manage the code - there are no "exceptions" then and we don't need to take care about two ways of initializing the same thing - just use one common initializer throughout and it's clear. Also, add more comments, mainly in the report_for_selection fn explaining what is being done and why with respect to the processing_handle and selection_handle.
89 lines
2.8 KiB
C
89 lines
2.8 KiB
C
/*
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* Copyright (C) 2002-2004 Sistina Software, Inc. All rights reserved.
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* Copyright (C) 2004-2009 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _LVM_REPORT_H
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#define _LVM_REPORT_H
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#include "metadata-exported.h"
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#include "label.h"
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#include "activate.h"
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typedef enum {
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LVS = 1,
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LVSINFO = 2,
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LVSSTATUS = 4,
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LVSINFOSTATUS = 8,
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PVS = 16,
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VGS = 32,
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SEGS = 64,
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SEGSSTATUS = 128,
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PVSEGS = 256,
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LABEL = 512,
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DEVTYPES = 1024
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} report_type_t;
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/*
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* The "struct selection_handle" is used only for selection
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* of items that should be processed further (not for display!).
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*
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* It consists of selection reporting handle "selection_rh"
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* used for the selection itself (not for display on output!).
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* The items are reported directly in memory to a buffer and
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* then compared against selection criteria. Once we know the
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* result of the selection, the buffer is dropped!
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*
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* The "orig_report_type" is the original requested report type.
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* The "report_type" is the reporting type actually used which
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* also counts with report types of the fields used in selection
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* criteria.
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*
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* The "selected" variable is used for propagating the result
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* of the selection.
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*/
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struct selection_handle {
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struct dm_report *selection_rh;
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report_type_t orig_report_type;
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report_type_t report_type;
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int selected;
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};
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struct field;
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struct report_handle;
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typedef int (*field_report_fn) (struct report_handle * dh, struct field * field,
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const void *data);
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void *report_init(struct cmd_context *cmd, const char *format, const char *keys,
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report_type_t *report_type, const char *separator,
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int aligned, int buffered, int headings, int field_prefixes,
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int quoted, int columns_as_rows, const char *selection);
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void *report_init_for_selection(struct cmd_context *cmd, report_type_t *report_type,
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const char *selection);
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int report_for_selection(struct cmd_context *cmd,
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struct selection_handle *sh,
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struct physical_volume *pv,
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struct volume_group *vg,
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struct logical_volume *lv);
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void report_free(void *handle);
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int report_object(void *handle, int selection_only, const struct volume_group *vg,
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const struct logical_volume *lv, const struct physical_volume *pv,
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const struct lv_segment *seg, const struct pv_segment *pvseg,
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const struct lv_with_info_and_seg_status *lvdm,
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const struct label *label);
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int report_devtypes(void *handle);
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int report_output(void *handle);
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#endif
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