mirror of
git://sourceware.org/git/lvm2.git
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133 lines
3.4 KiB
C
133 lines
3.4 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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#include "lib.h"
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#include "metadata.h"
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#include "import-export.h"
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#include "display.h"
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#include "toolcontext.h"
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#include "lvmcache.h"
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/* FIXME Use tidier inclusion method */
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static struct text_vg_version_ops *(_text_vsn_list[2]);
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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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{
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struct config_tree *cft;
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struct text_vg_version_ops **vsn;
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const char *vgname = NULL;
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static int _text_import_initialised = 0;
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if (!_text_import_initialised) {
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_text_vsn_list[0] = text_vg_vsn1_init();
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_text_vsn_list[1] = NULL;
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_text_import_initialised = 1;
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}
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if (!(cft = create_config_tree(NULL, 0)))
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return_NULL;
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if ((!dev && !read_config_file(cft)) ||
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(dev && !read_config_fd(cft, dev, offset, size,
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offset2, size2, checksum_fn, checksum)))
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goto_out;
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/*
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* Find a set of version functions that can read this file
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*/
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for (vsn = &_text_vsn_list[0]; *vsn; vsn++) {
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if (!(*vsn)->check_version(cft))
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continue;
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if (!(vgname = (*vsn)->read_vgname(fmt, cft, vgid, vgstatus,
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creation_host)))
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goto_out;
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break;
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}
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out:
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destroy_config_tree(cft);
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return vgname;
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}
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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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{
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struct volume_group *vg = NULL;
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struct config_tree *cft;
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struct text_vg_version_ops **vsn;
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static int _text_vg_import_initialised = 0;
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if (!_text_vg_import_initialised) {
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_text_vsn_list[0] = text_vg_vsn1_init();
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_text_vsn_list[1] = NULL;
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_text_vg_import_initialised = 1;
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}
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*desc = NULL;
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*when = 0;
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if (!(cft = create_config_tree(file, 0)))
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return_NULL;
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if ((!dev && !read_config_file(cft)) ||
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(dev && !read_config_fd(cft, dev, offset, size,
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offset2, size2, checksum_fn, checksum))) {
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log_error("Couldn't read volume group metadata.");
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goto out;
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}
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/*
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* Find a set of version functions that can read this file
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*/
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for (vsn = &_text_vsn_list[0]; *vsn; vsn++) {
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if (!(*vsn)->check_version(cft))
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continue;
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if (!(vg = (*vsn)->read_vg(fid, cft)))
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goto_out;
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(*vsn)->read_desc(fid->fmt->cmd->mem, cft, when, desc);
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break;
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}
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out:
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destroy_config_tree(cft);
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return vg;
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}
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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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{
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return text_vg_import_fd(fid, file, NULL, (off_t)0, 0, (off_t)0, 0, NULL, 0,
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when, desc);
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}
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