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bc437feded
The "status" field is treated as it ever has been, unknown flags there are treated as fatal metadata errors. However, in the "flags" field, any unknown flags will be ignored and silently dropped. This improves backward-compatibility possibilities. (Any versions without support for this new "flag" field will drop the field altogether, which is same as ignoring all the flags there.)
88 lines
2.9 KiB
C
88 lines
2.9 KiB
C
/*
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* Copyright (C) 2001-2004 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef _LVM_TEXT_IMPORT_EXPORT_H
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#define _LVM_TEXT_IMPORT_EXPORT_H
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#include "config.h"
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#include "lvm-types.h"
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#include "metadata.h"
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#include <stdio.h>
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/*
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* Constants to identify files this code can parse.
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*/
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#define CONTENTS_FIELD "contents"
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#define CONTENTS_VALUE "Text Format Volume Group"
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#define FORMAT_VERSION_FIELD "version"
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#define FORMAT_VERSION_VALUE 1
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/*
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* VGs, PVs and LVs all have status bitsets, we gather together
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* common code for reading and writing them.
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*/
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enum {
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COMPATIBLE_FLAG = 0x0,
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VG_FLAGS,
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PV_FLAGS,
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LV_FLAGS,
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STATUS_FLAG = 0x8,
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};
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struct text_vg_version_ops {
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int (*check_version) (struct config_tree * cf);
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struct volume_group *(*read_vg) (struct format_instance * fid,
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struct config_tree * cf);
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void (*read_desc) (struct dm_pool * mem, struct config_tree * cf,
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time_t *when, char **desc);
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const char *(*read_vgname) (const struct format_type *fmt,
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struct config_tree *cft,
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struct id *vgid, uint32_t *vgstatus,
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char **creation_host);
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};
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struct text_vg_version_ops *text_vg_vsn1_init(void);
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int print_flags(uint32_t status, int type, char *buffer, size_t size);
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int read_flags(uint32_t *status, int type, struct config_value *cv);
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int print_tags(struct list *tags, char *buffer, size_t size);
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int read_tags(struct dm_pool *mem, struct list *tags, struct config_value *cv);
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int text_vg_export_file(struct volume_group *vg, const char *desc, FILE *fp);
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int text_vg_export_raw(struct volume_group *vg, const char *desc, char **buf);
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struct volume_group *text_vg_import_file(struct format_instance *fid,
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const char *file,
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time_t *when, char **desc);
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struct volume_group *text_vg_import_fd(struct format_instance *fid,
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const char *file,
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struct device *dev,
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off_t offset, uint32_t size,
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off_t offset2, uint32_t size2,
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checksum_fn_t checksum_fn,
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uint32_t checksum,
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time_t *when, char **desc);
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const char *text_vgname_import(const struct format_type *fmt,
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struct device *dev,
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off_t offset, uint32_t size,
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off_t offset2, uint32_t size2,
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checksum_fn_t checksum_fn, uint32_t checksum,
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struct id *vgid, uint32_t *vgstatus,
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char **creation_host);
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#endif
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