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blkid.h
/* * blkid.h - Interface for libblkid, a library to identify block devices * * Copyright (C) 2001 Andreas Dilger * Copyright (C) 2003 Theodore Ts'o * Copyright (C) 2008 Karel Zak <kzak@redhat.com> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef _BLKID_BLKID_H #define _BLKID_BLKID_H #include <stdint.h> #include <sys/types.h> #ifdef __cplusplus extern "C" { #endif #define BLKID_VERSION "2.32.1" #define BLKID_DATE "16-Jul-2018" /** * blkid_dev: * * The device object keeps information about one device */ typedef struct blkid_struct_dev *blkid_dev; /** * blkid_cache: * * information about all system devices */ typedef struct blkid_struct_cache *blkid_cache; /** * blkid_probe: * * low-level probing setting */ typedef struct blkid_struct_probe *blkid_probe; /** * blkid_topology: * * device topology information */ typedef struct blkid_struct_topology *blkid_topology; /** * blkid_partlist * * list of all detected partitions and partitions tables */ typedef struct blkid_struct_partlist *blkid_partlist; /** * blkid_partition: * * information about a partition */ typedef struct blkid_struct_partition *blkid_partition; /** * blkid_parttable: * * information about a partition table */ typedef struct blkid_struct_parttable *blkid_parttable; /** * blkid_loff_t: * * 64-bit signed number for offsets and sizes */ typedef int64_t blkid_loff_t; /** * blkid_tag_iterate: * * tags iterator for high-level (blkid_cache) API */ typedef struct blkid_struct_tag_iterate *blkid_tag_iterate; /** * blkid_dev_iterate: * * devices iterator for high-level (blkid_cache) API */ 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) #ifndef __GNUC_PREREQ # if defined __GNUC__ && defined __GNUC_MINOR__ # define __GNUC_PREREQ(maj, min) ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) # else # define __GNUC_PREREQ(maj, min) 0 # endif #endif #ifndef __ul_attribute__ # if __GNUC_PREREQ (3, 4) # define __ul_attribute__(_a_) __attribute__(_a_) # else # define __ul_attribute__(_a_) # endif #endif /* cache.c */ extern void blkid_init_debug(int mask); 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) __ul_attribute__((warn_unused_result)); extern blkid_dev_iterate blkid_dev_iterate_begin(blkid_cache cache); extern int blkid_dev_set_search(blkid_dev_iterate iter, const char *search_type, const 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) __ul_attribute__((warn_unused_result)); extern int blkid_devno_to_wholedisk(dev_t dev, char *diskname, size_t len, dev_t *diskdevno) __ul_attribute__((warn_unused_result)); /* devname.c */ extern int blkid_probe_all(blkid_cache cache); extern int blkid_probe_all_new(blkid_cache cache); extern int blkid_probe_all_removable(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) __ul_attribute__((warn_unused_result)); extern char *blkid_get_devname(blkid_cache cache, const char *token, const char *value) __ul_attribute__((warn_unused_result)); /* 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) __ul_attribute__((nonnull)); extern int blkid_get_library_version(const char **ver_string, const char **date_string); /* encode.c */ extern int blkid_encode_string(const char *str, char *str_enc, size_t len); extern int blkid_safe_string(const char *str, char *str_safe, size_t len); /* evaluate.c */ extern int blkid_send_uevent(const char *devname, const char *action); extern char *blkid_evaluate_tag(const char *token, const char *value, blkid_cache *cache) __ul_attribute__((warn_unused_result)); extern char *blkid_evaluate_spec(const char *spec, blkid_cache *cache) __ul_attribute__((warn_unused_result)); /* probe.c */ extern blkid_probe blkid_new_probe(void) __ul_attribute__((warn_unused_result)); extern blkid_probe blkid_new_probe_from_filename(const char *filename) __ul_attribute__((warn_unused_result)) __ul_attribute__((nonnull)); extern void blkid_free_probe(blkid_probe pr); extern void blkid_reset_probe(blkid_probe pr); extern int blkid_probe_reset_buffers(blkid_probe pr); extern int blkid_probe_hide_range(blkid_probe pr, uint64_t off, uint64_t len); extern int blkid_probe_set_device(blkid_probe pr, int fd, blkid_loff_t off, blkid_loff_t size) __ul_attribute__((nonnull)); extern dev_t blkid_probe_get_devno(blkid_probe pr) __ul_attribute__((nonnull)); extern dev_t blkid_probe_get_wholedisk_devno(blkid_probe pr) __ul_attribute__((nonnull)); extern int blkid_probe_is_wholedisk(blkid_probe pr) __ul_attribute__((nonnull)); extern blkid_loff_t blkid_probe_get_size(blkid_probe pr) __ul_attribute__((nonnull)); extern blkid_loff_t blkid_probe_get_offset(blkid_probe pr) __ul_attribute__((nonnull)); extern unsigned int blkid_probe_get_sectorsize(blkid_probe pr) __ul_attribute__((nonnull)); extern int blkid_probe_set_sectorsize(blkid_probe pr, unsigned int sz) __ul_attribute__((nonnull)); extern blkid_loff_t blkid_probe_get_sectors(blkid_probe pr) __ul_attribute__((nonnull)); extern int blkid_probe_get_fd(blkid_probe pr) __ul_attribute__((nonnull)); /* * superblocks probing */ extern int blkid_known_fstype(const char *fstype) __ul_attribute__((nonnull)); extern int blkid_superblocks_get_name(size_t idx, const char **name, int *usage); extern int blkid_probe_enable_superblocks(blkid_probe pr, int enable) __ul_attribute__((nonnull)); #define BLKID_SUBLKS_LABEL (1 << 1) /* read LABEL from superblock */ #define BLKID_SUBLKS_LABELRAW (1 << 2) /* read and define LABEL_RAW result value*/ #define BLKID_SUBLKS_UUID (1 << 3) /* read UUID from superblock */ #define BLKID_SUBLKS_UUIDRAW (1 << 4) /* read and define UUID_RAW result value */ #define BLKID_SUBLKS_TYPE (1 << 5) /* define TYPE result value */ #define BLKID_SUBLKS_SECTYPE (1 << 6) /* define compatible fs type (second type) */ #define BLKID_SUBLKS_USAGE (1 << 7) /* define USAGE result value */ #define BLKID_SUBLKS_VERSION (1 << 8) /* read FS type from superblock */ #define BLKID_SUBLKS_MAGIC (1 << 9) /* define SBMAGIC and SBMAGIC_OFFSET */ #define BLKID_SUBLKS_BADCSUM (1 << 10) /* allow a bad checksum */ #define BLKID_SUBLKS_DEFAULT (BLKID_SUBLKS_LABEL | BLKID_SUBLKS_UUID | \ BLKID_SUBLKS_TYPE | BLKID_SUBLKS_SECTYPE) extern int blkid_probe_set_superblocks_flags(blkid_probe pr, int flags) __ul_attribute__((nonnull)); extern int blkid_probe_reset_superblocks_filter(blkid_probe pr) __ul_attribute__((nonnull)); extern int blkid_probe_invert_superblocks_filter(blkid_probe pr) __ul_attribute__((nonnull)); /** * BLKID_FLTR_NOTIN */ #define BLKID_FLTR_NOTIN 1 /** * BLKID_FLTR_ONLYIN */ #define BLKID_FLTR_ONLYIN 2 extern int blkid_probe_filter_superblocks_type(blkid_probe pr, int flag, char *names[]) __ul_attribute__((nonnull)); #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_superblocks_usage(blkid_probe pr, int flag, int usage) __ul_attribute__((nonnull)); /* * topology probing */ extern int blkid_probe_enable_topology(blkid_probe pr, int enable) __ul_attribute__((nonnull)); /* binary interface */ extern blkid_topology blkid_probe_get_topology(blkid_probe pr) __ul_attribute__((nonnull)); extern unsigned long blkid_topology_get_alignment_offset(blkid_topology tp) __ul_attribute__((nonnull)); extern unsigned long blkid_topology_get_minimum_io_size(blkid_topology tp) __ul_attribute__((nonnull)); extern unsigned long blkid_topology_get_optimal_io_size(blkid_topology tp) __ul_attribute__((nonnull)); extern unsigned long blkid_topology_get_logical_sector_size(blkid_topology tp) __ul_attribute__((nonnull)); extern unsigned long blkid_topology_get_physical_sector_size(blkid_topology tp) __ul_attribute__((nonnull)); /* * partitions probing */ extern int blkid_known_pttype(const char *pttype); extern int blkid_partitions_get_name(const size_t idx, const char **name); extern int blkid_probe_enable_partitions(blkid_probe pr, int enable) __ul_attribute__((nonnull)); extern int blkid_probe_reset_partitions_filter(blkid_probe pr) __ul_attribute__((nonnull)); extern int blkid_probe_invert_partitions_filter(blkid_probe pr) __ul_attribute__((nonnull)); extern int blkid_probe_filter_partitions_type(blkid_probe pr, int flag, char *names[]) __ul_attribute__((nonnull)); /* partitions probing flags */ #define BLKID_PARTS_FORCE_GPT (1 << 1) #define BLKID_PARTS_ENTRY_DETAILS (1 << 2) #define BLKID_PARTS_MAGIC (1 << 3) extern int blkid_probe_set_partitions_flags(blkid_probe pr, int flags) __ul_attribute__((nonnull)); /* binary interface */ extern blkid_partlist blkid_probe_get_partitions(blkid_probe pr) __ul_attribute__((nonnull)); extern int blkid_partlist_numof_partitions(blkid_partlist ls) __ul_attribute__((nonnull)); extern blkid_parttable blkid_partlist_get_table(blkid_partlist ls) __ul_attribute__((nonnull)); extern blkid_partition blkid_partlist_get_partition(blkid_partlist ls, int n) __ul_attribute__((nonnull)); extern blkid_partition blkid_partlist_get_partition_by_partno(blkid_partlist ls, int n) __ul_attribute__((nonnull)); extern blkid_partition blkid_partlist_devno_to_partition(blkid_partlist ls, dev_t devno) __ul_attribute__((nonnull)); extern blkid_parttable blkid_partition_get_table(blkid_partition par) __ul_attribute__((nonnull)); extern const char *blkid_partition_get_name(blkid_partition par) __ul_attribute__((nonnull)); extern const char *blkid_partition_get_uuid(blkid_partition par) __ul_attribute__((nonnull)); extern int blkid_partition_get_partno(blkid_partition par) __ul_attribute__((nonnull)); extern blkid_loff_t blkid_partition_get_start(blkid_partition par) __ul_attribute__((nonnull)); extern blkid_loff_t blkid_partition_get_size(blkid_partition par) __ul_attribute__((nonnull)); extern int blkid_partition_get_type(blkid_partition par) __ul_attribute__((nonnull)); extern const char *blkid_partition_get_type_string(blkid_partition par) __ul_attribute__((nonnull)); extern unsigned long long blkid_partition_get_flags(blkid_partition par) __ul_attribute__((nonnull)); extern int blkid_partition_is_logical(blkid_partition par) __ul_attribute__((nonnull)); extern int blkid_partition_is_extended(blkid_partition par) __ul_attribute__((nonnull)); extern int blkid_partition_is_primary(blkid_partition par) __ul_attribute__((nonnull)); extern const char *blkid_parttable_get_type(blkid_parttable tab) __ul_attribute__((nonnull)); extern const char *blkid_parttable_get_id(blkid_parttable tab) __ul_attribute__((nonnull)); extern blkid_loff_t blkid_parttable_get_offset(blkid_parttable tab) __ul_attribute__((nonnull)); extern blkid_partition blkid_parttable_get_parent(blkid_parttable tab) __ul_attribute__((nonnull)); /* * NAME=value low-level interface */ extern int blkid_do_probe(blkid_probe pr) __ul_attribute__((nonnull)); extern int blkid_do_safeprobe(blkid_probe pr) __ul_attribute__((nonnull)); extern int blkid_do_fullprobe(blkid_probe pr) __ul_attribute__((nonnull)); extern int blkid_probe_numof_values(blkid_probe pr) __ul_attribute__((nonnull)); extern int blkid_probe_get_value(blkid_probe pr, int num, const char **name, const char **data, size_t *len) __ul_attribute__((nonnull(1))); extern int blkid_probe_lookup_value(blkid_probe pr, const char *name, const char **data, size_t *len) __ul_attribute__((nonnull(1, 2))); extern int blkid_probe_has_value(blkid_probe pr, const char *name) __ul_attribute__((nonnull)); extern int blkid_do_wipe(blkid_probe pr, int dryrun) __ul_attribute__((nonnull)); extern int blkid_probe_step_back(blkid_probe pr) __ul_attribute__((nonnull)); /* * Deprecated functions/macros */ #ifndef BLKID_DISABLE_DEPRECATED #define BLKID_PROBREQ_LABEL BLKID_SUBLKS_LABEL #define BLKID_PROBREQ_LABELRAW BLKID_SUBLKS_LABELRAW #define BLKID_PROBREQ_UUID BLKID_SUBLKS_UUID #define BLKID_PROBREQ_UUIDRAW BLKID_SUBLKS_UUIDRAW #define BLKID_PROBREQ_TYPE BLKID_SUBLKS_TYPE #define BLKID_PROBREQ_SECTYPE BLKID_SUBLKS_SECTYPE #define BLKID_PROBREQ_USAGE BLKID_SUBLKS_USAGE #define BLKID_PROBREQ_VERSION BLKID_SUBLKS_VERSION extern int blkid_probe_set_request(blkid_probe pr, int flags) __ul_attribute__((deprecated)); extern int blkid_probe_filter_usage(blkid_probe pr, int flag, int usage) __ul_attribute__((deprecated)); extern int blkid_probe_filter_types(blkid_probe pr, int flag, char *names[]) __ul_attribute__((deprecated)); extern int blkid_probe_invert_filter(blkid_probe pr) __ul_attribute__((deprecated)); extern int blkid_probe_reset_filter(blkid_probe pr) __ul_attribute__((deprecated)); #endif /* BLKID_DISABLE_DEPRECATED */ #ifdef __cplusplus } #endif #endif /* _BLKID_BLKID_H */
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