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41 lines
1017 B
C
41 lines
1017 B
C
/*
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* Copyright (C) 2001 Sistina Software (UK) Limited.
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*
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* This file is released under the GPL.
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*/
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#ifndef _LVM_DEVICE_H
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#define _LVM_DEVICE_H
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#include "lvm-types.h"
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/*
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* All devices in LVM will be represented by one of these.
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* pointer comparisons are valid.
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*/
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struct device {
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char *name;
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dev_t dev;
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};
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/*
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* All io should use these routines, rather than opening the devices
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* by hand. You do not have to call an open routine. ATM all io is
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* immediately flushed.
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*/
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int dev_get_size(struct device *dev, uint64_t *size);
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int64_t dev_read(struct device *dev,
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uint64_t offset, int64_t len, void *buffer);
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int64_t dev_write(struct device *dev,
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uint64_t offset, int64_t len, void *buffer);
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/* FIXME: Alasdair lets add more query functions here for accessing
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the partition information, this can then be used by your filter. */
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#define LVM_DEFAULT_DIR_PREFIX "/dev/"
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/* FIXME Allow config file override */
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static inline char *lvm_dir_prefix(void) { return LVM_DEFAULT_DIR_PREFIX; }
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#endif
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