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 14#ifndef _BLKID_BLKID_H 15#define _BLKID_BLKID_H 16 17#include <sys/types.h> 18#include <linux/types.h> 19 20#ifdef __cplusplus 21extern "C" { 22#endif 23 24#define BLKID_VERSION "1.0.0" 25#define BLKID_DATE "12-Feb-2003" 26 27typedef struct blkid_struct_dev *blkid_dev; 28typedef struct blkid_struct_cache *blkid_cache; 29typedef __s64 blkid_loff_t; 30 31typedef struct blkid_struct_tag_iterate *blkid_tag_iterate; 32typedef struct blkid_struct_dev_iterate *blkid_dev_iterate; 33 34/* 35 * Flags for blkid_get_dev 36 * 37 * BLKID_DEV_CREATE Create an empty device structure if not found 38 * in the cache. 39 * BLKID_DEV_VERIFY Make sure the device structure corresponds 40 * with reality. 41 * BLKID_DEV_FIND Just look up a device entry, and return NULL 42 * if it is not found. 43 * BLKID_DEV_NORMAL Get a valid device structure, either from the 44 * cache or by probing the device. 45 */ 46#define BLKID_DEV_FIND 0x0000 47#define BLKID_DEV_CREATE 0x0001 48#define BLKID_DEV_VERIFY 0x0002 49#define BLKID_DEV_NORMAL (BLKID_DEV_CREATE | BLKID_DEV_VERIFY) 50 51/* cache.c */ 52extern void blkid_put_cache(blkid_cache cache); 53extern int blkid_get_cache(blkid_cache *cache, const char *filename); 54 55/* dev.c */ 56extern const char *blkid_dev_devname(blkid_dev dev); 57 58extern blkid_dev_iterate blkid_dev_iterate_begin(blkid_cache cache); 59extern int blkid_dev_set_search(blkid_dev_iterate iter, 60 char *search_type, char *search_value); 61extern int blkid_dev_next(blkid_dev_iterate iterate, blkid_dev *dev); 62extern void blkid_dev_iterate_end(blkid_dev_iterate iterate); 63 64/* devno.c */ 65extern char *blkid_devno_to_devname(dev_t devno); 66 67/* devname.c */ 68extern int blkid_probe_all(blkid_cache cache); 69extern int blkid_probe_all_new(blkid_cache cache); 70extern blkid_dev blkid_get_dev(blkid_cache cache, const char *devname, 71 int flags); 72 73/* getsize.c */ 74extern blkid_loff_t blkid_get_dev_size(int fd); 75 76/* probe.c */ 77int blkid_known_fstype(const char *fstype); 78extern blkid_dev blkid_verify(blkid_cache cache, blkid_dev dev); 79 80/* read.c */ 81 82/* resolve.c */ 83extern char *blkid_get_tag_value(blkid_cache cache, const char *tagname, 84 const char *devname); 85extern char *blkid_get_devname(blkid_cache cache, const char *token, 86 const char *value); 87 88/* tag.c */ 89extern blkid_tag_iterate blkid_tag_iterate_begin(blkid_dev dev); 90extern int blkid_tag_next(blkid_tag_iterate iterate, 91 const char **type, const char **value); 92extern void blkid_tag_iterate_end(blkid_tag_iterate iterate); 93extern int blkid_dev_has_tag(blkid_dev dev, const char *type, 94 const char *value); 95extern blkid_dev blkid_find_dev_with_tag(blkid_cache cache, 96 const char *type, 97 const char *value); 98extern int blkid_parse_tag_string(const char *token, char **ret_type, 99 char **ret_val); 100 101#ifdef __cplusplus 102} 103#endif 104 105#endif /* _BLKID_BLKID_H */ 106