mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-22 17:35:59 +03:00
106 lines
2.3 KiB
C
106 lines
2.3 KiB
C
/*
|
|
* Copyright (C) 2001 Sistina Software (UK) Limited.
|
|
*
|
|
* This file is released under the LGPL.
|
|
*/
|
|
|
|
#ifndef LIB_DEVICE_MAPPER_H
|
|
#define LIB_DEVICE_MAPPER_H
|
|
|
|
#include <inttypes.h>
|
|
#include <sys/types.h>
|
|
#include <linux/types.h>
|
|
|
|
/*
|
|
* Since it is quite laborious to build the ioctl
|
|
* arguments for the device-mapper people are
|
|
* encouraged to use this library.
|
|
*
|
|
* You will need to build a struct dm_task for
|
|
* each ioctl command you want to execute.
|
|
*/
|
|
|
|
typedef void (*dm_log_fn) (int level, const char *file, int line,
|
|
const char *f, ...);
|
|
|
|
/*
|
|
* The library user may wish to register their own
|
|
* logging function, by default errors go to
|
|
* stderr.
|
|
*/
|
|
void dm_log_init(dm_log_fn fn);
|
|
|
|
enum {
|
|
DM_DEVICE_CREATE,
|
|
DM_DEVICE_RELOAD,
|
|
DM_DEVICE_REMOVE,
|
|
DM_DEVICE_REMOVE_ALL,
|
|
|
|
DM_DEVICE_SUSPEND,
|
|
DM_DEVICE_RESUME,
|
|
|
|
DM_DEVICE_INFO,
|
|
DM_DEVICE_DEPS,
|
|
DM_DEVICE_RENAME,
|
|
|
|
DM_DEVICE_VERSION,
|
|
};
|
|
|
|
struct dm_task;
|
|
|
|
struct dm_task *dm_task_create(int type);
|
|
void dm_task_destroy(struct dm_task *dmt);
|
|
|
|
int dm_task_set_name(struct dm_task *dmt, const char *name);
|
|
int dm_task_set_uuid(struct dm_task *dmt, const char *uuid);
|
|
|
|
/*
|
|
* Retrieve attributes after an info.
|
|
*/
|
|
struct dm_info {
|
|
int exists;
|
|
int suspended;
|
|
unsigned int open_count;
|
|
int major;
|
|
int minor; /* minor device number */
|
|
int read_only; /* 0:read-write; 1:read-only */
|
|
|
|
unsigned int target_count;
|
|
};
|
|
|
|
struct dm_deps {
|
|
unsigned int count;
|
|
__kernel_dev_t device[0];
|
|
};
|
|
|
|
int dm_get_library_version(char *version, size_t size);
|
|
int dm_task_get_driver_version(struct dm_task *dmt, char *version, size_t size);
|
|
int dm_task_get_info(struct dm_task *dmt, struct dm_info *dmi);
|
|
const char *dm_task_get_uuid(struct dm_task *dmt);
|
|
|
|
struct dm_deps *dm_task_get_deps(struct dm_task *dmt);
|
|
|
|
int dm_task_set_ro(struct dm_task *dmt);
|
|
int dm_task_set_newname(struct dm_task *dmt, const char *newname);
|
|
int dm_task_set_minor(struct dm_task *dmt, int minor);
|
|
|
|
/*
|
|
* Use these to prepare for a create or reload.
|
|
*/
|
|
int dm_task_add_target(struct dm_task *dmt,
|
|
uint64_t start,
|
|
uint64_t size, const char *ttype, const char *params);
|
|
|
|
/*
|
|
* Call this to actually run the ioctl.
|
|
*/
|
|
int dm_task_run(struct dm_task *dmt);
|
|
|
|
/*
|
|
* Configure the device-mapper directory
|
|
*/
|
|
int dm_set_dev_dir(const char *dir);
|
|
const char *dm_dir(void);
|
|
|
|
#endif /* LIB_DEVICE_MAPPER_H */
|