1/* vi: set sw=4 ts=4: */ 2/* 3 * blkid.h - Interface for libblkid, a library to identify block devices 4 * 5 * Copyright (C) 2001 Andreas Dilger 6 * Copyright (C) 2003 Theodore Ts'o 7 * 8 * %Begin-Header% 9 * This file may be redistributed under the terms of the 10 * GNU Lesser General Public License. 11 * %End-Header% 12 */ 13#ifndef BLKID_BLKID_H 14#define BLKID_BLKID_H 1 15 16#include <sys/types.h> 17#include <linux/types.h> 18 19#ifdef __cplusplus 20extern "C" { 21#endif 22 23#define BLKID_VERSION "1.0.0" 24#define BLKID_DATE "12-Feb-2003" 25 26typedef struct blkid_struct_dev *blkid_dev; 27typedef struct blkid_struct_cache *blkid_cache; 28typedef __s64 blkid_loff_t; 29 30typedef struct blkid_struct_tag_iterate *blkid_tag_iterate; 31typedef struct blkid_struct_dev_iterate *blkid_dev_iterate; 32 33/* 34 * Flags for blkid_get_dev 35 * 36 * BLKID_DEV_CREATE Create an empty device structure if not found 37 * in the cache. 38 * BLKID_DEV_VERIFY Make sure the device structure corresponds 39 * with reality. 40 * BLKID_DEV_FIND Just look up a device entry, and return NULL 41 * if it is not found. 42 * BLKID_DEV_NORMAL Get a valid device structure, either from the 43 * cache or by probing the device. 44 */ 45#define BLKID_DEV_FIND 0x0000 46#define BLKID_DEV_CREATE 0x0001 47#define BLKID_DEV_VERIFY 0x0002 48#define BLKID_DEV_NORMAL (BLKID_DEV_CREATE | BLKID_DEV_VERIFY) 49 50/* cache.c */ 51extern void blkid_put_cache(blkid_cache cache); 52extern int blkid_get_cache(blkid_cache *cache, const char *filename); 53 54/* dev.c */ 55extern const char *blkid_dev_devname(blkid_dev dev); 56 57extern blkid_dev_iterate blkid_dev_iterate_begin(blkid_cache cache); 58extern int blkid_dev_set_search(blkid_dev_iterate iter, 59 char *search_type, char *search_value); 60extern int blkid_dev_next(blkid_dev_iterate iterate, blkid_dev *dev); 61extern void blkid_dev_iterate_end(blkid_dev_iterate iterate); 62 63/* devno.c */ 64extern char *blkid_devno_to_devname(dev_t devno); 65 66/* devname.c */ 67extern int blkid_probe_all(blkid_cache cache); 68extern int blkid_probe_all_new(blkid_cache cache); 69extern blkid_dev blkid_get_dev(blkid_cache cache, const char *devname, 70 int flags); 71 72/* getsize.c */ 73extern blkid_loff_t blkid_get_dev_size(int fd); 74 75/* probe.c */ 76int blkid_known_fstype(const char *fstype); 77extern blkid_dev blkid_verify(blkid_cache cache, blkid_dev dev); 78 79/* read.c */ 80 81/* resolve.c */ 82extern char *blkid_get_tag_value(blkid_cache cache, const char *tagname, 83 const char *devname); 84extern char *blkid_get_devname(blkid_cache cache, const char *token, 85 const char *value); 86 87/* tag.c */ 88extern blkid_tag_iterate blkid_tag_iterate_begin(blkid_dev dev); 89extern int blkid_tag_next(blkid_tag_iterate iterate, 90 const char **type, const char **value); 91extern void blkid_tag_iterate_end(blkid_tag_iterate iterate); 92extern int blkid_dev_has_tag(blkid_dev dev, const char *type, 93 const char *value); 94extern blkid_dev blkid_find_dev_with_tag(blkid_cache cache, 95 const char *type, 96 const char *value); 97extern int blkid_parse_tag_string(const char *token, char **ret_type, 98 char **ret_val); 99 100#ifdef __cplusplus 101} 102#endif 103 104#endif 105