+++ /dev/null
-/*
- * blkidP.h - Internal interfaces for libblkid
- *
- * 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_BLKIDP_H
-#define _BLKID_BLKIDP_H
-
-
-#define CONFIG_BLKID_DEBUG 1
-
-#include <sys/types.h>
-#include <dirent.h>
-#include <sys/stat.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <stdint.h>
-
-#include "c.h"
-#include "bitops.h" /* $(top_srcdir)/include/ */
-#include "blkdev.h"
-
-#include "blkid.h"
-#include <libubox/list.h>
-
-/*
- * This describes the attributes of a specific device.
- * We can traverse all of the tags by bid_tags (linking to the tag bit_names).
- * The bid_label and bid_uuid fields are shortcuts to the LABEL and UUID tag
- * values, if they exist.
- */
-struct blkid_struct_dev
-{
- struct list_head bid_devs; /* All devices in the cache */
- struct list_head bid_tags; /* All tags for this device */
- blkid_cache bid_cache; /* Dev belongs to this cache */
- char *bid_name; /* Device inode pathname */
- char *bid_type; /* Preferred device TYPE */
- int bid_pri; /* Device priority */
- dev_t bid_devno; /* Device major/minor number */
- time_t bid_time; /* Last update time of device */
- suseconds_t bid_utime; /* Last update time (microseconds) */
- unsigned int bid_flags; /* Device status bitflags */
- char *bid_label; /* Shortcut to device LABEL */
- char *bid_uuid; /* Shortcut to binary UUID */
-};
-
-#define BLKID_BID_FL_VERIFIED 0x0001 /* Device data validated from disk */
-#define BLKID_BID_FL_INVALID 0x0004 /* Device is invalid */
-#define BLKID_BID_FL_REMOVABLE 0x0008 /* Device added by blkid_probe_all_removable() */
-
-/*
- * Each tag defines a NAME=value pair for a particular device. The tags
- * are linked via bit_names for a single device, so that traversing the
- * names list will get you a list of all tags associated with a device.
- * They are also linked via bit_values for all devices, so one can easily
- * search all tags with a given NAME for a specific value.
- */
-struct blkid_struct_tag
-{
- struct list_head bit_tags; /* All tags for this device */
- struct list_head bit_names; /* All tags with given NAME */
- char *bit_name; /* NAME of tag (shared) */
- char *bit_val; /* value of tag */
- blkid_dev bit_dev; /* pointer to device */
-};
-typedef struct blkid_struct_tag *blkid_tag;
-
-/*
- * Chain IDs
- */
-enum {
- BLKID_CHAIN_SUBLKS, /* FS/RAID superblocks (enabled by default) */
- BLKID_CHAIN_TOPLGY, /* Block device topology */
- BLKID_CHAIN_PARTS, /* Partition tables */
-
- BLKID_NCHAINS /* number of chains */
-};
-
-struct blkid_chain {
- const struct blkid_chaindrv *driver; /* chain driver */
-
- int enabled; /* boolean */
- int flags; /* BLKID_<chain>_* */
- int binary; /* boolean */
- int idx; /* index of the current prober (or -1) */
- unsigned long *fltr; /* filter or NULL */
- void *data; /* private chain data or NULL */
-};
-
-/*
- * Chain driver
- */
-struct blkid_chaindrv {
- const size_t id; /* BLKID_CHAIN_* */
- const char *name; /* name of chain (for debug purpose) */
- const int dflt_flags; /* default chain flags */
- const int dflt_enabled; /* default enabled boolean */
- int has_fltr; /* boolean */
-
- const struct blkid_idinfo **idinfos; /* description of probing functions */
- const size_t nidinfos; /* number of idinfos */
-
- /* driver operations */
- int (*probe)(blkid_probe, struct blkid_chain *);
- int (*safeprobe)(blkid_probe, struct blkid_chain *);
- void (*free_data)(blkid_probe, void *);
-};
-
-/*
- * Low-level probe result
- */
-#define BLKID_PROBVAL_BUFSIZ 64
-
-#define BLKID_NVALS_SUBLKS 14
-#define BLKID_NVALS_TOPLGY 5
-#define BLKID_NVALS_PARTS 13
-
-/* Max number of all values in probing result */
-#define BLKID_NVALS (BLKID_NVALS_SUBLKS + \
- BLKID_NVALS_TOPLGY + \
- BLKID_NVALS_PARTS)
-
-struct blkid_prval
-{
- const char *name; /* value name */
- unsigned char data[BLKID_PROBVAL_BUFSIZ]; /* value data */
- size_t len; /* length of value data */
-
- struct blkid_chain *chain; /* owner */
-};
-
-/*
- * Filesystem / Raid magic strings
- */
-/*
- * Filesystem / Raid description
- */
-#define BLKID_NONE_MAGIC {{ NULL }}
-
-/*
- * tolerant FS - can share the same device with more filesystems (e.g. typical
- * on CD-ROMs). We need this flag to detect ambivalent results (e.g. valid fat
- * and valid linux swap on the same device).
- */
-#define BLKID_IDINFO_TOLERANT (1 << 1)
-
-struct blkid_bufinfo {
- unsigned char *data;
- blkid_loff_t off;
- blkid_loff_t len;
- struct list_head bufs; /* list of buffers */
-};
-
-/* private flags library flags */
-#define BLKID_FL_PRIVATE_FD (1 << 1) /* see blkid_new_probe_from_filename() */
-#define BLKID_FL_TINY_DEV (1 << 2) /* <= 1.47MiB (floppy or so) */
-#define BLKID_FL_CDROM_DEV (1 << 3) /* is a CD/DVD drive */
-
-/* private per-probing flags */
-#define BLKID_PROBE_FL_IGNORE_PT (1 << 1) /* ignore partition table */
-
-extern blkid_probe blkid_clone_probe(blkid_probe parent);
-extern blkid_probe blkid_probe_get_wholedisk_probe(blkid_probe pr);
-
-/*
- * Evaluation methods (for blkid_eval_* API)
- */
-enum {
- BLKID_EVAL_UDEV = 0,
- BLKID_EVAL_SCAN,
-
- __BLKID_EVAL_LAST
-};
-
-/*
- * Library config options
- */
-struct blkid_config {
- int eval[__BLKID_EVAL_LAST]; /* array with EVALUATION=<udev,cache> options */
- int nevals; /* number of elems in eval array */
- int uevent; /* SEND_UEVENT=<yes|not> option */
- char *cachefile; /* CACHE_FILE=<path> option */
-};
-
-extern struct blkid_config *blkid_read_config(const char *filename);
-extern void blkid_free_config(struct blkid_config *conf);
-
-/*
- * Minimum number of seconds between device probes, even when reading
- * from the cache. This is to avoid re-probing all devices which were
- * just probed by another program that does not share the cache.
- */
-#define BLKID_PROBE_MIN 2
-
-/*
- * Time in seconds an entry remains verified in the in-memory cache
- * before being reverified (in case of long-running processes that
- * keep a cache in memory and continue to use it for a long time).
- */
-#define BLKID_PROBE_INTERVAL 200
-
-/* This describes an entire blkid cache file and probed devices.
- * We can traverse all of the found devices via bic_list.
- * We can traverse all of the tag types by bic_tags, which hold empty tags
- * for each tag type. Those tags can be used as list_heads for iterating
- * through all devices with a specific tag type (e.g. LABEL).
- */
-struct blkid_struct_cache
-{
- struct list_head bic_devs; /* List head of all devices */
- struct list_head bic_tags; /* List head of all tag types */
- time_t bic_time; /* Last probe time */
- time_t bic_ftime; /* Mod time of the cachefile */
- unsigned int bic_flags; /* Status flags of the cache */
- char *bic_filename; /* filename of cache */
- blkid_probe probe; /* low-level probing stuff */
-};
-
-#define BLKID_BIC_FL_PROBED 0x0002 /* We probed /proc/partition devices */
-#define BLKID_BIC_FL_CHANGED 0x0004 /* Cache has changed from disk */
-
-extern char *blkid_strdup(const char *s);
-extern char *blkid_strndup(const char *s, const int length);
-extern char *blkid_strconcat(const char *a, const char *b, const char *c);
-
-/* config file */
-#define BLKID_CONFIG_FILE "/etc/blkid.conf"
-
-/* cache file on systemds with /run */
-#define BLKID_RUNTIME_TOPDIR "/run"
-#define BLKID_RUNTIME_DIR BLKID_RUNTIME_TOPDIR "/blkid"
-#define BLKID_CACHE_FILE BLKID_RUNTIME_DIR "/blkid.tab"
-
-/* old systems */
-#define BLKID_CACHE_FILE_OLD "/etc/blkid.tab"
-
-#define BLKID_ERR_IO 5
-#define BLKID_ERR_PROC 9
-#define BLKID_ERR_MEM 12
-#define BLKID_ERR_CACHE 14
-#define BLKID_ERR_DEV 19
-#define BLKID_ERR_PARAM 22
-#define BLKID_ERR_BIG 27
-
-/*
- * Priority settings for different types of devices
- */
-#define BLKID_PRI_UBI 50
-#define BLKID_PRI_DM 40
-#define BLKID_PRI_EVMS 30
-#define BLKID_PRI_LVM 20
-#define BLKID_PRI_MD 10
-
-#if defined(TEST_PROGRAM) && !defined(CONFIG_BLKID_DEBUG)
-#define CONFIG_BLKID_DEBUG
-#endif
-
-#define DEBUG_CACHE 0x0001
-#define DEBUG_DUMP 0x0002
-#define DEBUG_DEV 0x0004
-#define DEBUG_DEVNAME 0x0008
-#define DEBUG_DEVNO 0x0010
-#define DEBUG_PROBE 0x0020
-#define DEBUG_READ 0x0040
-#define DEBUG_RESOLVE 0x0080
-#define DEBUG_SAVE 0x0100
-#define DEBUG_TAG 0x0200
-#define DEBUG_LOWPROBE 0x0400
-#define DEBUG_CONFIG 0x0800
-#define DEBUG_EVALUATE 0x1000
-#define DEBUG_INIT 0x8000
-#define DEBUG_ALL 0xFFFF
-
-#ifdef CONFIG_BLKID_DEBUG
-extern int blkid_debug_mask;
-extern void blkid_init_debug(int mask);
-extern void blkid_debug_dump_dev(blkid_dev dev);
-extern void blkid_debug_dump_tag(blkid_tag tag);
-
-#define DBG(m,x) if ((m) & blkid_debug_mask) x;
-
-#else /* !CONFIG_BLKID_DEBUG */
-#define DBG(m,x)
-#define blkid_init_debug(x)
-#endif /* CONFIG_BLKID_DEBUG */
-
-/* devno.c */
-struct dir_list {
- char *name;
- struct dir_list *next;
-};
-extern void blkid__scan_dir(char *, dev_t, struct dir_list **, char **);
-extern int blkid_driver_has_major(const char *drvname, int major);
-
-/* lseek.c */
-extern blkid_loff_t blkid_llseek(int fd, blkid_loff_t offset, int whence);
-
-/* read.c */
-extern void blkid_read_cache(blkid_cache cache);
-
-/* save.c */
-extern int blkid_flush_cache(blkid_cache cache);
-
-/* cache */
-extern char *blkid_safe_getenv(const char *arg);
-extern char *blkid_get_cache_filename(struct blkid_config *conf);
-
-/*
- * Functions to create and find a specific tag type: tag.c
- */
-extern void blkid_free_tag(blkid_tag tag);
-extern blkid_tag blkid_find_tag_dev(blkid_dev dev, const char *type);
-extern int blkid_set_tag(blkid_dev dev, const char *name,
- const char *value, const int vlength);
-
-/*
- * Functions to create and find a specific tag type: dev.c
- */
-extern blkid_dev blkid_new_dev(void);
-extern void blkid_free_dev(blkid_dev dev);
-
-/* probe.c */
-extern int blkid_probe_is_tiny(blkid_probe pr);
-extern int blkid_probe_is_cdrom(blkid_probe pr);
-extern unsigned char *blkid_probe_get_buffer(blkid_probe pr,
- blkid_loff_t off, blkid_loff_t len);
-
-extern unsigned char *blkid_probe_get_sector(blkid_probe pr, unsigned int sector);
-
-extern int blkid_probe_get_dimension(blkid_probe pr,
- blkid_loff_t *off, blkid_loff_t *size);
-
-extern int blkid_probe_set_dimension(blkid_probe pr,
- blkid_loff_t off, blkid_loff_t size);
-
-extern int blkid_probe_get_idmag(blkid_probe pr, const struct blkid_idinfo *id,
- blkid_loff_t *offset, const struct blkid_idmag **res);
-
-/* returns superblok according to 'struct blkid_idmag' */
-#define blkid_probe_get_sb(_pr, _mag, type) \
- ((type *) blkid_probe_get_buffer((_pr),\
- (_mag)->kboff << 10, sizeof(type)))
-
-extern blkid_partlist blkid_probe_get_partlist(blkid_probe pr);
-
-extern int blkid_probe_is_covered_by_pt(blkid_probe pr,
- blkid_loff_t offset, blkid_loff_t size);
-
-extern void blkid_probe_chain_reset_vals(blkid_probe pr, struct blkid_chain *chn);
-extern int blkid_probe_chain_copy_vals(blkid_probe pr, struct blkid_chain *chn,
- struct blkid_prval *vals, int nvals);
-extern struct blkid_prval *blkid_probe_assign_value(blkid_probe pr, const char *name);
-extern int blkid_probe_reset_last_value(blkid_probe pr);
-extern void blkid_probe_append_vals(blkid_probe pr, struct blkid_prval *vals, int nvals);
-
-extern struct blkid_chain *blkid_probe_get_chain(blkid_probe pr);
-
-extern struct blkid_prval *__blkid_probe_get_value(blkid_probe pr, int num);
-extern struct blkid_prval *__blkid_probe_lookup_value(blkid_probe pr, const char *name);
-
-extern unsigned long *blkid_probe_get_filter(blkid_probe pr, int chain, int create);
-extern int __blkid_probe_invert_filter(blkid_probe pr, int chain);
-extern int __blkid_probe_reset_filter(blkid_probe pr, int chain);
-extern int __blkid_probe_filter_types(blkid_probe pr, int chain, int flag, char *names[]);
-
-extern void *blkid_probe_get_binary_data(blkid_probe pr, struct blkid_chain *chn);
-
-extern int blkid_probe_set_value(blkid_probe pr, const char *name,
- unsigned char *data, size_t len);
-extern int blkid_probe_vsprintf_value(blkid_probe pr, const char *name,
- const char *fmt, va_list ap);
-extern int blkid_probe_sprintf_value(blkid_probe pr, const char *name,
- const char *fmt, ...);
-extern int blkid_probe_set_magic(blkid_probe pr, blkid_loff_t offset,
- size_t len, unsigned char *magic);
-
-extern void blkid_unparse_uuid(const unsigned char *uuid, char *str, size_t len);
-extern size_t blkid_rtrim_whitespace(unsigned char *str);
-
-extern void blkid_probe_set_wiper(blkid_probe pr, blkid_loff_t off,
- blkid_loff_t size);
-extern int blkid_probe_is_wiped(blkid_probe pr, struct blkid_chain **chn,
- blkid_loff_t off, blkid_loff_t size);
-extern void blkid_probe_use_wiper(blkid_probe pr, blkid_loff_t off, blkid_loff_t size);
-
-/* filter bitmap macros */
-#define blkid_bmp_wordsize (8 * sizeof(unsigned long))
-#define blkid_bmp_idx_bit(item) (1UL << ((item) % blkid_bmp_wordsize))
-#define blkid_bmp_idx_byte(item) ((item) / blkid_bmp_wordsize)
-
-#define blkid_bmp_set_item(bmp, item) \
- ((bmp)[ blkid_bmp_idx_byte(item) ] |= blkid_bmp_idx_bit(item))
-
-#define blkid_bmp_unset_item(bmp, item) \
- ((bmp)[ blkid_bmp_idx_byte(item) ] &= ~blkid_bmp_idx_bit(item))
-
-#define blkid_bmp_get_item(bmp, item) \
- ((bmp)[ blkid_bmp_idx_byte(item) ] & blkid_bmp_idx_bit(item))
-
-#define blkid_bmp_nwords(max_items) \
- (((max_items) + blkid_bmp_wordsize) / blkid_bmp_wordsize)
-
-#define blkid_bmp_nbytes(max_items) \
- (blkid_bmp_nwords(max_items) * sizeof(unsigned long))
-
-/* encode.c */
-extern size_t blkid_encode_to_utf8(int enc, unsigned char *dest, size_t len,
- const unsigned char *src, size_t count);
-
-#define BLKID_ENC_UTF16BE 0
-#define BLKID_ENC_UTF16LE 1
-
-#endif /* _BLKID_BLKIDP_H */
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