/* * volume_id - reads filesystem label and uuid * * Copyright (C) 2005 Kay Sievers * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "libbb.h" #include "volume_id.h" PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN #define dbg(...) ((void)0) /* #define dbg(...) bb_error_msg(__VA_ARGS__) */ /* volume_id.h */ #define VOLUME_ID_VERSION 48 #define VOLUME_ID_LABEL_SIZE 64 #define VOLUME_ID_UUID_SIZE 36 #define VOLUME_ID_FORMAT_SIZE 32 #define VOLUME_ID_PARTITIONS_MAX 256 enum volume_id_usage { VOLUME_ID_UNUSED, VOLUME_ID_UNPROBED, VOLUME_ID_OTHER, VOLUME_ID_FILESYSTEM, VOLUME_ID_PARTITIONTABLE, VOLUME_ID_RAID, VOLUME_ID_DISKLABEL, VOLUME_ID_CRYPTO, }; #ifdef UNUSED_PARTITION_CODE struct volume_id_partition { // const char *type; // const char *usage; // smallint usage_id; // uint8_t pt_type_raw; // uint64_t pt_off; // uint64_t pt_len; }; #endif struct volume_id { int fd; // int fd_close:1; int error; size_t sbbuf_len; size_t seekbuf_len; uint8_t *sbbuf; uint8_t *seekbuf; uint64_t seekbuf_off; #ifdef UNUSED_PARTITION_CODE struct volume_id_partition *partitions; size_t partition_count; #endif // uint8_t label_raw[VOLUME_ID_LABEL_SIZE]; // size_t label_raw_len; char label[VOLUME_ID_LABEL_SIZE+1]; // uint8_t uuid_raw[VOLUME_ID_UUID_SIZE]; // size_t uuid_raw_len; /* uuid is stored in ASCII (not binary) form here: */ char uuid[VOLUME_ID_UUID_SIZE+1]; // char type_version[VOLUME_ID_FORMAT_SIZE]; // smallint usage_id; // const char *usage; #if ENABLE_FEATURE_BLKID_TYPE const char *type; #endif }; struct volume_id* FAST_FUNC volume_id_open_node(int fd); int FAST_FUNC volume_id_probe_all(struct volume_id *id, /*uint64_t off,*/ uint64_t size); void FAST_FUNC free_volume_id(struct volume_id *id); /* util.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 #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)) #if BB_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) #else #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 /* volume_id_set_uuid(id,buf,fmt) assumes size of uuid buf * by shifting: 4 << fmt, except for fmt == UUID_DCE_STRING. * The constants below should match sizes. */ enum uuid_format { UUID_DOS = 0, /* 4 bytes */ UUID_NTFS = 1, /* 8 bytes */ UUID_DCE = 2, /* 16 bytes */ UUID_DCE_STRING = 3, /* 36 bytes (VOLUME_ID_UUID_SIZE) */ }; enum endian { LE = 0, BE = 1 }; void volume_id_set_unicode16(char *str, size_t len, const uint8_t *buf, enum endian endianess, size_t count); //void volume_id_set_usage(struct volume_id *id, enum volume_id_usage usage_id); //void volume_id_set_usage_part(struct volume_id_partition *part, enum volume_id_usage usage_id); //void volume_id_set_label_raw(struct volume_id *id, const uint8_t *buf, size_t count); void volume_id_set_label_string(struct volume_id *id, const uint8_t *buf, size_t count); void volume_id_set_label_unicode16(struct volume_id *id, const uint8_t *buf, enum endian endianess, size_t count); void volume_id_set_uuid(struct volume_id *id, const uint8_t *buf, enum uuid_format format); void *volume_id_get_buffer(struct volume_id *id, uint64_t off, size_t len); void volume_id_free_buffer(struct volume_id *id); /* Probe routines */ /* RAID */ //int FAST_FUNC volume_id_probe_highpoint_37x_raid(struct volume_id *id /*,uint64_t off*/); //int FAST_FUNC volume_id_probe_highpoint_45x_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size); //int FAST_FUNC volume_id_probe_intel_software_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size); int FAST_FUNC volume_id_probe_linux_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size); //int FAST_FUNC volume_id_probe_lsi_mega_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size); //int FAST_FUNC volume_id_probe_nvidia_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size); //int FAST_FUNC volume_id_probe_promise_fasttrack_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size); //int FAST_FUNC volume_id_probe_silicon_medley_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size); //int FAST_FUNC volume_id_probe_via_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size); //int FAST_FUNC volume_id_probe_lvm1(struct volume_id *id /*,uint64_t off*/); //int FAST_FUNC volume_id_probe_lvm2(struct volume_id *id /*,uint64_t off*/); /* FS */ int FAST_FUNC volume_id_probe_btrfs(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_cramfs(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_ext(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_vfat(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_hfs_hfsplus(struct volume_id *id /*,uint64_t off*/); //int FAST_FUNC volume_id_probe_hpfs(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_iso9660(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_jfs(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_linux_swap(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_luks(struct volume_id *id /*,uint64_t off*/); //int FAST_FUNC volume_id_probe_mac_partition_map(struct volume_id *id /*,uint64_t off*/); //int FAST_FUNC volume_id_probe_minix(struct volume_id *id /*,uint64_t off*/); //int FAST_FUNC volume_id_probe_msdos_part_table(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_nilfs(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_ntfs(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_exfat(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_ocfs2(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_reiserfs(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_romfs(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_squashfs(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_sysv(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_udf(struct volume_id *id /*,uint64_t off*/); //int FAST_FUNC volume_id_probe_ufs(struct volume_id *id /*,uint64_t off*/); int FAST_FUNC volume_id_probe_xfs(struct volume_id *id /*,uint64_t off*/); POP_SAVED_FUNCTION_VISIBILITY