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/*
* blkid.h - Interface for libblkid, a library to identify block devices
*
* Copyright (C) 2001 Andreas Dilger
* Copyright (C) 2003 Theodore Ts'o
*
* %Begin-Header%
* This file may be redistributed under the terms of the
* GNU Lesser General Public License.
* %End-Header%
*/
#ifndef _BLKID_BLKID_H
#define _BLKID_BLKID_H
#include <sys/types.h>
#include <blkid/blkid_types.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef struct blkid_struct_dev *blkid_dev;
typedef struct blkid_struct_cache *blkid_cache;
typedef struct blkid_struct_probe *blkid_probe;
typedef __s64 blkid_loff_t;
typedef struct blkid_struct_tag_iterate *blkid_tag_iterate;
typedef struct blkid_struct_dev_iterate *blkid_dev_iterate;
/*
* Flags for blkid_get_dev
*
* BLKID_DEV_CREATE Create an empty device structure if not found
* in the cache.
* BLKID_DEV_VERIFY Make sure the device structure corresponds
* with reality.
* BLKID_DEV_FIND Just look up a device entry, and return NULL
* if it is not found.
* BLKID_DEV_NORMAL Get a valid device structure, either from the
* cache or by probing the device.
*/
#define BLKID_DEV_FIND 0x0000
#define BLKID_DEV_CREATE 0x0001
#define BLKID_DEV_VERIFY 0x0002
#define BLKID_DEV_NORMAL (BLKID_DEV_CREATE | BLKID_DEV_VERIFY)
/* cache.c */
extern void blkid_put_cache(blkid_cache cache);
extern int blkid_get_cache(blkid_cache *cache, const char *filename);
extern void blkid_gc_cache(blkid_cache cache);
/* dev.c */
extern const char *blkid_dev_devname(blkid_dev dev);
extern blkid_dev_iterate blkid_dev_iterate_begin(blkid_cache cache);
extern int blkid_dev_set_search(blkid_dev_iterate iter,
char *search_type, char *search_value);
extern int blkid_dev_next(blkid_dev_iterate iterate, blkid_dev *dev);
extern void blkid_dev_iterate_end(blkid_dev_iterate iterate);
/* devno.c */
extern char *blkid_devno_to_devname(dev_t devno);
/* devname.c */
extern int blkid_probe_all(blkid_cache cache);
extern int blkid_probe_all_new(blkid_cache cache);
extern blkid_dev blkid_get_dev(blkid_cache cache, const char *devname,
int flags);
/* getsize.c */
extern blkid_loff_t blkid_get_dev_size(int fd);
/* verify.c */
extern blkid_dev blkid_verify(blkid_cache cache, blkid_dev dev);
/* read.c */
/* resolve.c */
extern char *blkid_get_tag_value(blkid_cache cache, const char *tagname,
const char *devname);
extern char *blkid_get_devname(blkid_cache cache, const char *token,
const char *value);
/* tag.c */
extern blkid_tag_iterate blkid_tag_iterate_begin(blkid_dev dev);
extern int blkid_tag_next(blkid_tag_iterate iterate,
const char **type, const char **value);
extern void blkid_tag_iterate_end(blkid_tag_iterate iterate);
extern int blkid_dev_has_tag(blkid_dev dev, const char *type,
const char *value);
extern blkid_dev blkid_find_dev_with_tag(blkid_cache cache,
const char *type,
const char *value);
extern int blkid_parse_tag_string(const char *token, char **ret_type,
char **ret_val);
/* version.c */
extern int blkid_parse_version_string(const char *ver_string);
extern int blkid_get_library_version(const char **ver_string,
const char **date_string);
/* probe.c */
extern int blkid_known_fstype(const char *fstype);
extern blkid_probe blkid_new_probe(void);
extern void blkid_free_probe(blkid_probe pr);
extern void blkid_reset_probe(blkid_probe pr);
extern int blkid_probe_set_device(blkid_probe pr, int fd,
blkid_loff_t off, blkid_loff_t size);
#define BLKID_PROBREQ_LABEL (1 << 1)
#define BLKID_PROBREQ_LABELRAW (1 << 2)
#define BLKID_PROBREQ_UUID (1 << 3)
#define BLKID_PROBREQ_UUIDRAW (1 << 4)
#define BLKID_PROBREQ_TYPE (1 << 5)
#define BLKID_PROBREQ_SECTYPE (1 << 6)
#define BLKID_PROBREQ_USAGE (1 << 7)
#define BLKID_PROBREQ_VERSION (1 << 8)
extern int blkid_probe_set_request(blkid_probe pr, int flags);
#define BLKID_USAGE_FILESYSTEM (1 << 1)
#define BLKID_USAGE_RAID (1 << 2)
#define BLKID_USAGE_CRYPTO (1 << 3)
#define BLKID_USAGE_OTHER (1 << 4)
extern int blkid_probe_filter_usage(blkid_probe pr, int flag, int usage);
#define BLKID_FLTR_NOTIN 1
#define BLKID_FLTR_ONLYIN 2
extern int blkid_probe_filter_types(blkid_probe pr,
int flag, char *names[]);
extern int blkid_probe_invert_filter(blkid_probe pr);
extern int blkid_probe_reset_filter(blkid_probe pr);
extern int blkid_do_probe(blkid_probe pr);
extern int blkid_probe_numof_values(blkid_probe pr);
extern int blkid_probe_get_value(blkid_probe pr, int num, const char **name,
unsigned char **data, size_t *len);
extern int blkid_probe_lookup_value(blkid_probe pr, const char *name,
unsigned char **data, size_t *len);
extern int blkid_probe_has_value(blkid_probe pr, const char *name);
#ifdef __cplusplus
}
#endif
#endif /* _BLKID_BLKID_H */
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