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Diffstat (limited to 'extras/volume_id/libvolume_id/util.h')
| -rw-r--r-- | extras/volume_id/libvolume_id/util.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/extras/volume_id/libvolume_id/util.h b/extras/volume_id/libvolume_id/util.h new file mode 100644 index 0000000000..6e16491c80 --- /dev/null +++ b/extras/volume_id/libvolume_id/util.h @@ -0,0 +1,93 @@ +/* + * volume_id - reads filesystem label and uuid + * + * Copyright (C) 2005 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> + +/* 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 + +/* probe volume for all known filesystems in specific order */ +#define bswap16(x) (uint16_t) ((((uint16_t)(x) & 0x00ffu) << 8) | \ + (((uint16_t)(x) & 0xff00u) >> 8)) + +#define bswap32(x) (uint32_t) ((((uint32_t)(x) & 0xff000000u) >> 24) | \ + (((uint32_t)(x) & 0x00ff0000u) >> 8) | \ + (((uint32_t)(x) & 0x0000ff00u) << 8) | \ + (((uint32_t)(x) & 0x000000ffu) << 24)) + +#define bswap64(x) (uint64_t) ((((uint64_t)(x) & 0xff00000000000000ull) >> 56) | \ + (((uint64_t)(x) & 0x00ff000000000000ull) >> 40) | \ + (((uint64_t)(x) & 0x0000ff0000000000ull) >> 24) | \ + (((uint64_t)(x) & 0x000000ff00000000ull) >> 8) | \ + (((uint64_t)(x) & 0x00000000ff000000ull) << 8) | \ + (((uint64_t)(x) & 0x0000000000ff0000ull) << 24) | \ + (((uint64_t)(x) & 0x000000000000ff00ull) << 40) | \ + (((uint64_t)(x) & 0x00000000000000ffull) << 56)) + +#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) bswap16(x) +#define be32_to_cpu(x) bswap32(x) +#define cpu_to_le16(x) (x) +#define cpu_to_le32(x) (x) +#define cpu_to_be32(x) bswap32(x) +#elif (__BYTE_ORDER == __BIG_ENDIAN) +#define le16_to_cpu(x) bswap16(x) +#define le32_to_cpu(x) bswap32(x) +#define le64_to_cpu(x) bswap64(x) +#define be16_to_cpu(x) (x) +#define be32_to_cpu(x) (x) +#define cpu_to_le16(x) bswap16(x) +#define cpu_to_le32(x) bswap32(x) +#define cpu_to_be32(x) (x) +#endif +#endif /* __BYTE_ORDER */ + +enum uuid_format { + UUID_DCE_STRING, + UUID_DCE, + UUID_DOS, + UUID_NTFS, + UUID_HFS, +}; + +enum endian { + LE = 0, + BE = 1 +}; + +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_usage_part(struct volume_id_partition *part, 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, 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_ */ + |