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git://sourceware.org/git/lvm2.git
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c6f48b7c1a
Changes: - move device type registration out of "type filter" (filter.c) to a separate and new dev-type.[ch] for common use throughout the code - the structure for keeping the major numbers detected for available device types and available partitioning available is stored in "dev_types" structure now - move common partitioning detection code to dev-type.[ch] as well together with other device-related functions bound to dev_types (see dev-type.h for the interface) The dev-type interface contains all common functions used to detect subsystems/device types, signature/superblock recognition code, type-specific device properties and other common device properties (bound to dev_types), including partitioning support. - add dev_types instance to cmd context as cmd->dev_types for common use - use cmd->dev_types throughout as a central point for providing information about device types
45 lines
1011 B
C
45 lines
1011 B
C
/*
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* Copyright (C) 2010 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 "dev-type.h"
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#include "metadata.h"
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#define LUKS_SIGNATURE "LUKS\xba\xbe"
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#define LUKS_SIGNATURE_SIZE 6
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int dev_is_luks(struct device *dev, uint64_t *signature)
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{
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char buf[LUKS_SIGNATURE_SIZE];
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int ret = -1;
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if (!dev_open_readonly(dev)) {
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stack;
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return -1;
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}
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*signature = 0;
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if (!dev_read(dev, 0, LUKS_SIGNATURE_SIZE, buf))
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goto_out;
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ret = memcmp(buf, LUKS_SIGNATURE, LUKS_SIGNATURE_SIZE) ? 0 : 1;
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out:
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if (!dev_close(dev))
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stack;
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return ret;
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}
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