mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-22 17:35:59 +03:00
104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
/*
|
|
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
|
|
* Copyright (C) 2004 Red Hat, Inc. All rights reserved.
|
|
*
|
|
* This file is part of LVM2.
|
|
*
|
|
* This copyrighted material is made available to anyone wishing to use,
|
|
* modify, copy, or redistribute it subject to the terms and conditions
|
|
* of the GNU General Public License v.2.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef _LVM_DEVICE_H
|
|
#define _LVM_DEVICE_H
|
|
|
|
#include "uuid.h"
|
|
#include <fcntl.h>
|
|
|
|
#define DEV_ACCESSED_W 0x00000001 /* Device written to? */
|
|
#define DEV_REGULAR 0x00000002 /* Regular file? */
|
|
#define DEV_ALLOCED 0x00000004 /* dbg_malloc used */
|
|
|
|
/*
|
|
* All devices in LVM will be represented by one of these.
|
|
* pointer comparisons are valid.
|
|
*/
|
|
struct device {
|
|
struct list aliases; /* struct str_list from lvm-types.h */
|
|
dev_t dev;
|
|
|
|
/* private */
|
|
int fd;
|
|
int open_count;
|
|
uint32_t flags;
|
|
uint64_t end;
|
|
struct list open_list;
|
|
|
|
char pvid[ID_LEN + 1];
|
|
};
|
|
|
|
struct device_list {
|
|
struct list list;
|
|
struct device *dev;
|
|
};
|
|
|
|
struct device_area {
|
|
struct device *dev;
|
|
uint64_t start; /* Bytes */
|
|
uint64_t size; /* Bytes */
|
|
};
|
|
|
|
/*
|
|
* All io should use these routines.
|
|
*/
|
|
int dev_get_size(const struct device *dev, uint64_t *size);
|
|
int dev_get_sectsize(struct device *dev, uint32_t *size);
|
|
|
|
/* Use quiet version if device number could change e.g. when opening LV */
|
|
int dev_open(struct device *dev);
|
|
int dev_open_quiet(struct device *dev);
|
|
int dev_open_flags(struct device *dev, int flags, int append, int quiet);
|
|
int dev_close(struct device *dev);
|
|
int dev_close_immediate(struct device *dev);
|
|
void dev_close_all(void);
|
|
|
|
static inline int dev_fd(struct device *dev)
|
|
{
|
|
return dev->fd;
|
|
}
|
|
|
|
int dev_read(struct device *dev, uint64_t offset, size_t len, void *buffer);
|
|
int dev_write(struct device *dev, uint64_t offset, size_t len, void *buffer);
|
|
int dev_append(struct device *dev, size_t len, void *buffer);
|
|
int dev_zero(struct device *dev, uint64_t offset, size_t len);
|
|
void dev_flush(struct device *dev);
|
|
|
|
struct device *dev_create_file(const char *filename, struct device *dev,
|
|
struct str_list *alias);
|
|
|
|
static inline const char *dev_name(const struct device *dev)
|
|
{
|
|
return (dev) ? list_item(dev->aliases.n, struct str_list)->str :
|
|
"unknown device";
|
|
}
|
|
|
|
/* Return a valid device name from the alias list; NULL otherwise */
|
|
const char *dev_name_confirmed(struct device *dev, int quiet);
|
|
|
|
/* FIXME Check partition type if appropriate */
|
|
|
|
#define is_lvm_partition(a) 1
|
|
|
|
/*
|
|
static inline int is_lvm_partition(const char *name)
|
|
{
|
|
return 1;
|
|
}
|
|
*/
|
|
|
|
#endif
|