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77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
/*
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* volume_id - reads filesystem label and uuid
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*
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* Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation version 2 of the License.
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*/
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#ifndef _VOLUME_ID_UTIL_
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#define _VOLUME_ID_UTIL_
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE 1
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#endif
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <endian.h>
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#include <byteswap.h>
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/* size of superblock buffer, reiserfs block is at 64k */
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#define SB_BUFFER_SIZE 0x11000
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/* size of seek buffer, FAT cluster is 32k max */
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#define SEEK_BUFFER_SIZE 0x10000
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#ifdef __BYTE_ORDER
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#if (__BYTE_ORDER == __LITTLE_ENDIAN)
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#define le16_to_cpu(x) (x)
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#define le32_to_cpu(x) (x)
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#define le64_to_cpu(x) (x)
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#define be16_to_cpu(x) bswap_16(x)
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#define be32_to_cpu(x) bswap_32(x)
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#define cpu_to_le16(x) (x)
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#define cpu_to_le32(x) (x)
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#define cpu_to_be32(x) bswap_32(x)
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#elif (__BYTE_ORDER == __BIG_ENDIAN)
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#define le16_to_cpu(x) bswap_16(x)
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#define le32_to_cpu(x) bswap_32(x)
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#define le64_to_cpu(x) bswap_64(x)
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#define be16_to_cpu(x) (x)
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#define be32_to_cpu(x) (x)
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#define cpu_to_le16(x) bswap_16(x)
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#define cpu_to_le32(x) bswap_32(x)
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#define cpu_to_be32(x) (x)
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#endif
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#endif /* __BYTE_ORDER */
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enum uuid_format {
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UUID_DCE_STRING,
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UUID_DCE,
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UUID_DOS,
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UUID_NTFS,
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UUID_HFS,
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};
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enum endian {
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LE = 0,
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BE = 1
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};
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extern void volume_id_set_unicode16(char *str, size_t len, const uint8_t *buf, enum endian endianess, size_t count);
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extern void volume_id_set_usage(struct volume_id *id, enum volume_id_usage usage_id);
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extern void volume_id_set_usage_part(struct volume_id_partition *part, enum volume_id_usage usage_id);
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extern void volume_id_set_label_raw(struct volume_id *id, const uint8_t *buf, size_t count);
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extern void volume_id_set_label_string(struct volume_id *id, const uint8_t *buf, size_t count);
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extern void volume_id_set_label_unicode16(struct volume_id *id, const uint8_t *buf, enum endian endianess, size_t count);
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extern void volume_id_set_uuid(struct volume_id *id, const uint8_t *buf, enum uuid_format format);
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extern uint8_t *volume_id_get_buffer(struct volume_id *id, uint64_t off, size_t len);
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extern void volume_id_free_buffer(struct volume_id *id);
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#endif /* _VOLUME_ID_UTIL_ */
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