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/*
* volume_id - reads filesystem label and uuid
*
* Copyright (C) 2005-2006 Kay Sievers <kay.sievers@vrfy.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation version 2 of the License.
*/
#ifndef _VOLUME_ID_UTIL_
#define _VOLUME_ID_UTIL_
#ifndef _GNU_SOURCE
#define _GNU_SOURCE 1
#endif
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <endian.h>
#include <byteswap.h>
#include <syslog.h>
#define ALLOWED_CHARS "#+-.:=@_"
#ifndef PACKED
#define PACKED __attribute__((packed))
#endif
#define err(format, arg...) volume_id_log_fn(LOG_ERR, __FILE__, __LINE__, format, ##arg)
#define info(format, arg...) volume_id_log_fn(LOG_INFO, __FILE__, __LINE__, format, ##arg)
#ifdef DEBUG
#define dbg(format, arg...) volume_id_log_fn(LOG_DEBUG, __FILE__, __LINE__, format, ##arg)
#else
#define dbg(format, arg...) do { } while (0)
#endif
/* size of superblock buffer, reiserfs block is at 64k */
#define SB_BUFFER_SIZE 0x11000
/* size of seek buffer, FAT cluster is 32k max */
#define SEEK_BUFFER_SIZE 0x10000
#ifdef __BYTE_ORDER
#if (__BYTE_ORDER == __LITTLE_ENDIAN)
#define le16_to_cpu(x) (x)
#define le32_to_cpu(x) (x)
#define le64_to_cpu(x) (x)
#define be16_to_cpu(x) bswap_16(x)
#define be32_to_cpu(x) bswap_32(x)
#define cpu_to_le16(x) (x)
#define cpu_to_le32(x) (x)
#define cpu_to_be32(x) bswap_32(x)
#elif (__BYTE_ORDER == __BIG_ENDIAN)
#define le16_to_cpu(x) bswap_16(x)
#define le32_to_cpu(x) bswap_32(x)
#define le64_to_cpu(x) bswap_64(x)
#define be16_to_cpu(x) (x)
#define be32_to_cpu(x) (x)
#define cpu_to_le16(x) bswap_16(x)
#define cpu_to_le32(x) bswap_32(x)
#define cpu_to_be32(x) (x)
#endif
#endif /* __BYTE_ORDER */
enum uuid_format {
UUID_STRING,
UUID_HEX_STRING,
UUID_DCE,
UUID_DOS,
UUID_64BIT_LE,
UUID_64BIT_BE,
UUID_FOURINT,
};
enum endian {
LE = 0,
BE = 1
};
extern int volume_id_utf8_encoded_valid_unichar(const char *str);
extern void volume_id_set_unicode16(char *str, size_t len, const uint8_t *buf, enum endian endianess, size_t count);
extern void volume_id_set_usage(struct volume_id *id, enum volume_id_usage usage_id);
extern void volume_id_set_label_raw(struct volume_id *id, const uint8_t *buf, size_t count);
extern void volume_id_set_label_string(struct volume_id *id, const uint8_t *buf, size_t count);
extern void volume_id_set_label_unicode16(struct volume_id *id, const uint8_t *buf, enum endian endianess, size_t count);
extern void volume_id_set_uuid(struct volume_id *id, const uint8_t *buf, size_t len, enum uuid_format format);
extern uint8_t *volume_id_get_buffer(struct volume_id *id, uint64_t off, size_t len);
extern void volume_id_free_buffer(struct volume_id *id);
#endif /* _VOLUME_ID_UTIL_ */
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