mirror of
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462 lines
15 KiB
C
462 lines
15 KiB
C
/*
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* blkid.h - Interface for libblkid, a library to identify block devices
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*
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* Copyright (C) 2001 Andreas Dilger
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* Copyright (C) 2003 Theodore Ts'o
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* Copyright (C) 2008 Karel Zak <kzak@redhat.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _BLKID_BLKID_H
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#define _BLKID_BLKID_H
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#include <stdint.h>
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define BLKID_VERSION "2.31.1"
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#define BLKID_DATE "19-Dec-2017"
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/**
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* blkid_dev:
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*
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* The device object keeps information about one device
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*/
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typedef struct blkid_struct_dev *blkid_dev;
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/**
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* blkid_cache:
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*
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* information about all system devices
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*/
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typedef struct blkid_struct_cache *blkid_cache;
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/**
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* blkid_probe:
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*
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* low-level probing setting
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*/
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typedef struct blkid_struct_probe *blkid_probe;
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/**
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* blkid_topology:
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*
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* device topology information
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*/
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typedef struct blkid_struct_topology *blkid_topology;
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/**
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* blkid_partlist
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*
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* list of all detected partitions and partitions tables
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*/
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typedef struct blkid_struct_partlist *blkid_partlist;
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/**
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* blkid_partition:
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*
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* information about a partition
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*/
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typedef struct blkid_struct_partition *blkid_partition;
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/**
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* blkid_parttable:
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*
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* information about a partition table
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*/
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typedef struct blkid_struct_parttable *blkid_parttable;
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/**
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* blkid_loff_t:
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*
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* 64-bit signed number for offsets and sizes
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*/
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typedef int64_t blkid_loff_t;
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/**
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* blkid_tag_iterate:
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*
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* tags iterator for high-level (blkid_cache) API
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*/
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typedef struct blkid_struct_tag_iterate *blkid_tag_iterate;
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/**
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* blkid_dev_iterate:
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*
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* devices iterator for high-level (blkid_cache) API
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*/
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typedef struct blkid_struct_dev_iterate *blkid_dev_iterate;
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/*
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* Flags for blkid_get_dev
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*
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* BLKID_DEV_CREATE Create an empty device structure if not found
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* in the cache.
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* BLKID_DEV_VERIFY Make sure the device structure corresponds
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* with reality.
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* BLKID_DEV_FIND Just look up a device entry, and return NULL
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* if it is not found.
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* BLKID_DEV_NORMAL Get a valid device structure, either from the
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* cache or by probing the device.
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*/
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#define BLKID_DEV_FIND 0x0000
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#define BLKID_DEV_CREATE 0x0001
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#define BLKID_DEV_VERIFY 0x0002
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#define BLKID_DEV_NORMAL (BLKID_DEV_CREATE | BLKID_DEV_VERIFY)
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#ifndef __GNUC_PREREQ
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# if defined __GNUC__ && defined __GNUC_MINOR__
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# define __GNUC_PREREQ(maj, min) ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
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# else
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# define __GNUC_PREREQ(maj, min) 0
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# endif
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#endif
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#ifndef __ul_attribute__
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# if __GNUC_PREREQ (3, 4)
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# define __ul_attribute__(_a_) __attribute__(_a_)
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# else
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# define __ul_attribute__(_a_)
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# endif
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#endif
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/* cache.c */
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extern void blkid_init_debug(int mask);
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extern void blkid_put_cache(blkid_cache cache);
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extern int blkid_get_cache(blkid_cache *cache, const char *filename);
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extern void blkid_gc_cache(blkid_cache cache);
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/* dev.c */
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extern const char *blkid_dev_devname(blkid_dev dev)
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__ul_attribute__((warn_unused_result));
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extern blkid_dev_iterate blkid_dev_iterate_begin(blkid_cache cache);
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extern int blkid_dev_set_search(blkid_dev_iterate iter,
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char *search_type, char *search_value);
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extern int blkid_dev_next(blkid_dev_iterate iterate, blkid_dev *dev);
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extern void blkid_dev_iterate_end(blkid_dev_iterate iterate);
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/* devno.c */
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extern char *blkid_devno_to_devname(dev_t devno)
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__ul_attribute__((warn_unused_result));
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extern int blkid_devno_to_wholedisk(dev_t dev, char *diskname,
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size_t len, dev_t *diskdevno)
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__ul_attribute__((warn_unused_result));
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/* devname.c */
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extern int blkid_probe_all(blkid_cache cache);
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extern int blkid_probe_all_new(blkid_cache cache);
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extern int blkid_probe_all_removable(blkid_cache cache);
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extern blkid_dev blkid_get_dev(blkid_cache cache, const char *devname, int flags);
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/* getsize.c */
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extern blkid_loff_t blkid_get_dev_size(int fd);
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/* verify.c */
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extern blkid_dev blkid_verify(blkid_cache cache, blkid_dev dev);
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/* read.c */
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/* resolve.c */
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extern char *blkid_get_tag_value(blkid_cache cache, const char *tagname,
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const char *devname)
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__ul_attribute__((warn_unused_result));
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extern char *blkid_get_devname(blkid_cache cache, const char *token,
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const char *value)
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__ul_attribute__((warn_unused_result));
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/* tag.c */
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extern blkid_tag_iterate blkid_tag_iterate_begin(blkid_dev dev);
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extern int blkid_tag_next(blkid_tag_iterate iterate,
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const char **type, const char **value);
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extern void blkid_tag_iterate_end(blkid_tag_iterate iterate);
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extern int blkid_dev_has_tag(blkid_dev dev, const char *type, const char *value);
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extern blkid_dev blkid_find_dev_with_tag(blkid_cache cache,
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const char *type,
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const char *value);
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extern int blkid_parse_tag_string(const char *token, char **ret_type, char **ret_val);
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/* version.c */
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extern int blkid_parse_version_string(const char *ver_string)
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__ul_attribute__((nonnull));
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extern int blkid_get_library_version(const char **ver_string,
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const char **date_string);
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/* encode.c */
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extern int blkid_encode_string(const char *str, char *str_enc, size_t len);
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extern int blkid_safe_string(const char *str, char *str_safe, size_t len);
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/* evaluate.c */
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extern int blkid_send_uevent(const char *devname, const char *action);
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extern char *blkid_evaluate_tag(const char *token, const char *value,
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blkid_cache *cache)
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__ul_attribute__((warn_unused_result));
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extern char *blkid_evaluate_spec(const char *spec, blkid_cache *cache)
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__ul_attribute__((warn_unused_result));
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/* probe.c */
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extern blkid_probe blkid_new_probe(void)
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__ul_attribute__((warn_unused_result));
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extern blkid_probe blkid_new_probe_from_filename(const char *filename)
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__ul_attribute__((warn_unused_result))
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__ul_attribute__((nonnull));
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extern void blkid_free_probe(blkid_probe pr);
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extern void blkid_reset_probe(blkid_probe pr);
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extern int blkid_probe_reset_buffers(blkid_probe pr);
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extern int blkid_probe_hide_range(blkid_probe pr, uint64_t off, uint64_t len);
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extern int blkid_probe_set_device(blkid_probe pr, int fd,
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blkid_loff_t off, blkid_loff_t size)
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__ul_attribute__((nonnull));
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extern dev_t blkid_probe_get_devno(blkid_probe pr)
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__ul_attribute__((nonnull));
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extern dev_t blkid_probe_get_wholedisk_devno(blkid_probe pr)
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__ul_attribute__((nonnull));
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extern int blkid_probe_is_wholedisk(blkid_probe pr)
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__ul_attribute__((nonnull));
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extern blkid_loff_t blkid_probe_get_size(blkid_probe pr)
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__ul_attribute__((nonnull));
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extern blkid_loff_t blkid_probe_get_offset(blkid_probe pr)
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__ul_attribute__((nonnull));
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extern unsigned int blkid_probe_get_sectorsize(blkid_probe pr)
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__ul_attribute__((nonnull));
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extern int blkid_probe_set_sectorsize(blkid_probe pr, unsigned int sz)
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__ul_attribute__((nonnull));
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extern blkid_loff_t blkid_probe_get_sectors(blkid_probe pr)
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__ul_attribute__((nonnull));
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extern int blkid_probe_get_fd(blkid_probe pr)
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__ul_attribute__((nonnull));
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/*
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* superblocks probing
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*/
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extern int blkid_known_fstype(const char *fstype)
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__ul_attribute__((nonnull));
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extern int blkid_superblocks_get_name(size_t idx, const char **name, int *usage);
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extern int blkid_probe_enable_superblocks(blkid_probe pr, int enable)
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__ul_attribute__((nonnull));
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#define BLKID_SUBLKS_LABEL (1 << 1) /* read LABEL from superblock */
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#define BLKID_SUBLKS_LABELRAW (1 << 2) /* read and define LABEL_RAW result value*/
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#define BLKID_SUBLKS_UUID (1 << 3) /* read UUID from superblock */
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#define BLKID_SUBLKS_UUIDRAW (1 << 4) /* read and define UUID_RAW result value */
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#define BLKID_SUBLKS_TYPE (1 << 5) /* define TYPE result value */
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#define BLKID_SUBLKS_SECTYPE (1 << 6) /* define compatible fs type (second type) */
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#define BLKID_SUBLKS_USAGE (1 << 7) /* define USAGE result value */
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#define BLKID_SUBLKS_VERSION (1 << 8) /* read FS type from superblock */
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#define BLKID_SUBLKS_MAGIC (1 << 9) /* define SBMAGIC and SBMAGIC_OFFSET */
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#define BLKID_SUBLKS_BADCSUM (1 << 10) /* allow a bad checksum */
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#define BLKID_SUBLKS_DEFAULT (BLKID_SUBLKS_LABEL | BLKID_SUBLKS_UUID | \
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BLKID_SUBLKS_TYPE | BLKID_SUBLKS_SECTYPE)
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extern int blkid_probe_set_superblocks_flags(blkid_probe pr, int flags)
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__ul_attribute__((nonnull));
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extern int blkid_probe_reset_superblocks_filter(blkid_probe pr)
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__ul_attribute__((nonnull));
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extern int blkid_probe_invert_superblocks_filter(blkid_probe pr)
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__ul_attribute__((nonnull));
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/**
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* BLKID_FLTR_NOTIN
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*/
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#define BLKID_FLTR_NOTIN 1
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/**
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* BLKID_FLTR_ONLYIN
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*/
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#define BLKID_FLTR_ONLYIN 2
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extern int blkid_probe_filter_superblocks_type(blkid_probe pr, int flag, char *names[])
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__ul_attribute__((nonnull));
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#define BLKID_USAGE_FILESYSTEM (1 << 1)
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#define BLKID_USAGE_RAID (1 << 2)
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#define BLKID_USAGE_CRYPTO (1 << 3)
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#define BLKID_USAGE_OTHER (1 << 4)
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extern int blkid_probe_filter_superblocks_usage(blkid_probe pr, int flag, int usage)
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__ul_attribute__((nonnull));
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/*
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* topology probing
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*/
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extern int blkid_probe_enable_topology(blkid_probe pr, int enable)
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__ul_attribute__((nonnull));
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/* binary interface */
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extern blkid_topology blkid_probe_get_topology(blkid_probe pr)
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__ul_attribute__((nonnull));
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extern unsigned long blkid_topology_get_alignment_offset(blkid_topology tp)
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__ul_attribute__((nonnull));
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extern unsigned long blkid_topology_get_minimum_io_size(blkid_topology tp)
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__ul_attribute__((nonnull));
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extern unsigned long blkid_topology_get_optimal_io_size(blkid_topology tp)
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__ul_attribute__((nonnull));
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extern unsigned long blkid_topology_get_logical_sector_size(blkid_topology tp)
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__ul_attribute__((nonnull));
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extern unsigned long blkid_topology_get_physical_sector_size(blkid_topology tp)
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__ul_attribute__((nonnull));
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/*
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* partitions probing
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*/
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extern int blkid_known_pttype(const char *pttype);
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extern int blkid_partitions_get_name(const size_t idx, const char **name);
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extern int blkid_probe_enable_partitions(blkid_probe pr, int enable)
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__ul_attribute__((nonnull));
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extern int blkid_probe_reset_partitions_filter(blkid_probe pr)
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__ul_attribute__((nonnull));
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extern int blkid_probe_invert_partitions_filter(blkid_probe pr)
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__ul_attribute__((nonnull));
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extern int blkid_probe_filter_partitions_type(blkid_probe pr, int flag, char *names[])
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__ul_attribute__((nonnull));
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/* partitions probing flags */
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#define BLKID_PARTS_FORCE_GPT (1 << 1)
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#define BLKID_PARTS_ENTRY_DETAILS (1 << 2)
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#define BLKID_PARTS_MAGIC (1 << 3)
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extern int blkid_probe_set_partitions_flags(blkid_probe pr, int flags)
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__ul_attribute__((nonnull));
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/* binary interface */
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extern blkid_partlist blkid_probe_get_partitions(blkid_probe pr)
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__ul_attribute__((nonnull));
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extern int blkid_partlist_numof_partitions(blkid_partlist ls)
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__ul_attribute__((nonnull));
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extern blkid_parttable blkid_partlist_get_table(blkid_partlist ls)
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__ul_attribute__((nonnull));
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extern blkid_partition blkid_partlist_get_partition(blkid_partlist ls, int n)
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__ul_attribute__((nonnull));
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extern blkid_partition blkid_partlist_get_partition_by_partno(blkid_partlist ls, int n)
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__ul_attribute__((nonnull));
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extern blkid_partition blkid_partlist_devno_to_partition(blkid_partlist ls, dev_t devno)
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__ul_attribute__((nonnull));
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extern blkid_parttable blkid_partition_get_table(blkid_partition par)
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__ul_attribute__((nonnull));
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extern const char *blkid_partition_get_name(blkid_partition par)
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__ul_attribute__((nonnull));
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extern const char *blkid_partition_get_uuid(blkid_partition par)
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__ul_attribute__((nonnull));
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extern int blkid_partition_get_partno(blkid_partition par)
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__ul_attribute__((nonnull));
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extern blkid_loff_t blkid_partition_get_start(blkid_partition par)
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__ul_attribute__((nonnull));
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extern blkid_loff_t blkid_partition_get_size(blkid_partition par)
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__ul_attribute__((nonnull));
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extern int blkid_partition_get_type(blkid_partition par)
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__ul_attribute__((nonnull));
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extern const char *blkid_partition_get_type_string(blkid_partition par)
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__ul_attribute__((nonnull));
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extern unsigned long long blkid_partition_get_flags(blkid_partition par)
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__ul_attribute__((nonnull));
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extern int blkid_partition_is_logical(blkid_partition par)
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__ul_attribute__((nonnull));
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extern int blkid_partition_is_extended(blkid_partition par)
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__ul_attribute__((nonnull));
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extern int blkid_partition_is_primary(blkid_partition par)
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__ul_attribute__((nonnull));
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extern const char *blkid_parttable_get_type(blkid_parttable tab)
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__ul_attribute__((nonnull));
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extern const char *blkid_parttable_get_id(blkid_parttable tab)
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__ul_attribute__((nonnull));
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extern blkid_loff_t blkid_parttable_get_offset(blkid_parttable tab)
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__ul_attribute__((nonnull));
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extern blkid_partition blkid_parttable_get_parent(blkid_parttable tab)
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__ul_attribute__((nonnull));
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/*
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* NAME=value low-level interface
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*/
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extern int blkid_do_probe(blkid_probe pr)
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__ul_attribute__((nonnull));
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extern int blkid_do_safeprobe(blkid_probe pr)
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__ul_attribute__((nonnull));
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extern int blkid_do_fullprobe(blkid_probe pr)
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__ul_attribute__((nonnull));
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extern int blkid_probe_numof_values(blkid_probe pr)
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__ul_attribute__((nonnull));
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extern int blkid_probe_get_value(blkid_probe pr, int num, const char **name,
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const char **data, size_t *len)
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__ul_attribute__((nonnull(1)));
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extern int blkid_probe_lookup_value(blkid_probe pr, const char *name,
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const char **data, size_t *len)
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__ul_attribute__((nonnull(1, 2)));
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extern int blkid_probe_has_value(blkid_probe pr, const char *name)
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__ul_attribute__((nonnull));
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extern int blkid_do_wipe(blkid_probe pr, int dryrun)
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__ul_attribute__((nonnull));
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extern int blkid_probe_step_back(blkid_probe pr)
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__ul_attribute__((nonnull));
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/*
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* Deprecated functions/macros
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*/
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#ifndef BLKID_DISABLE_DEPRECATED
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#define BLKID_PROBREQ_LABEL BLKID_SUBLKS_LABEL
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#define BLKID_PROBREQ_LABELRAW BLKID_SUBLKS_LABELRAW
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#define BLKID_PROBREQ_UUID BLKID_SUBLKS_UUID
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#define BLKID_PROBREQ_UUIDRAW BLKID_SUBLKS_UUIDRAW
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#define BLKID_PROBREQ_TYPE BLKID_SUBLKS_TYPE
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#define BLKID_PROBREQ_SECTYPE BLKID_SUBLKS_SECTYPE
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#define BLKID_PROBREQ_USAGE BLKID_SUBLKS_USAGE
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#define BLKID_PROBREQ_VERSION BLKID_SUBLKS_VERSION
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extern int blkid_probe_set_request(blkid_probe pr, int flags)
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__ul_attribute__((deprecated));
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extern int blkid_probe_filter_usage(blkid_probe pr, int flag, int usage)
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__ul_attribute__((deprecated));
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extern int blkid_probe_filter_types(blkid_probe pr, int flag, char *names[])
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__ul_attribute__((deprecated));
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extern int blkid_probe_invert_filter(blkid_probe pr)
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__ul_attribute__((deprecated));
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extern int blkid_probe_reset_filter(blkid_probe pr)
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__ul_attribute__((deprecated));
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#endif /* BLKID_DISABLE_DEPRECATED */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _BLKID_BLKID_H */
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