probe.h revision 9c460caae3dab7803c0e7d9399b47e790cf90661
1/* 2 * probe.h - constants and on-disk structures for extracting device data 3 * 4 * Copyright (C) 1999 by Andries Brouwer 5 * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o 6 * Copyright (C) 2001 by Andreas Dilger 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_PROBE_H 15#define _BLKID_PROBE_H 16 17#include <blkid/blkid_types.h> 18 19struct blkid_magic; 20 21#define SB_BUFFER_SIZE 0x11000 22 23struct blkid_probe { 24 int fd; 25 blkid_cache cache; 26 blkid_dev dev; 27 unsigned char *sbbuf; 28 size_t sb_valid; 29 unsigned char *buf; 30 size_t buf_max; 31}; 32 33typedef int (*blkid_probe_t)(struct blkid_probe *probe, 34 struct blkid_magic *id, unsigned char *buf); 35 36struct blkid_magic { 37 const char *bim_type; /* type name for this magic */ 38 long bim_kboff; /* kilobyte offset of superblock */ 39 unsigned bim_sboff; /* byte offset within superblock */ 40 unsigned bim_len; /* length of magic */ 41 const char *bim_magic; /* magic string */ 42 blkid_probe_t bim_probe; /* probe function */ 43}; 44 45/* 46 * Structures for each of the content types we want to extract information 47 * from. We do not necessarily need the magic field here, because we have 48 * already identified the content type before we get this far. It may still 49 * be useful if there are probe functions which handle multiple content types. 50 */ 51struct ext2_super_block { 52 __u32 s_inodes_count; 53 __u32 s_blocks_count; 54 __u32 s_r_blocks_count; 55 __u32 s_free_blocks_count; 56 __u32 s_free_inodes_count; 57 __u32 s_first_data_block; 58 __u32 s_log_block_size; 59 __u32 s_dummy3[7]; 60 unsigned char s_magic[2]; 61 __u16 s_state; 62 __u32 s_dummy5[8]; 63 __u32 s_feature_compat; 64 __u32 s_feature_incompat; 65 __u32 s_feature_ro_compat; 66 unsigned char s_uuid[16]; 67 char s_volume_name[16]; 68 char s_last_mounted[64]; 69 __u32 s_algorithm_usage_bitmap; 70 __u8 s_prealloc_blocks; 71 __u8 s_prealloc_dir_blocks; 72 __u16 s_reserved_gdt_blocks; 73 __u8 s_journal_uuid[16]; 74 __u32 s_journal_inum; 75 __u32 s_journal_dev; 76 __u32 s_last_orphan; 77 __u32 s_hash_seed[4]; 78 __u8 s_def_hash_version; 79 __u8 s_jnl_backup_type; 80 __u16 s_reserved_word_pad; 81 __u32 s_default_mount_opts; 82 __u32 s_first_meta_bg; 83 __u32 s_mkfs_time; 84 __u32 s_jnl_blocks[17]; 85 __u32 s_blocks_count_hi; 86 __u32 s_r_blocks_count_hi; 87 __u32 s_free_blocks_hi; 88 __u16 s_min_extra_isize; 89 __u16 s_want_extra_isize; 90 __u32 s_flags; 91 __u16 s_raid_stride; 92 __u16 s_mmp_interval; 93 __u64 s_mmp_block; 94 __u32 s_raid_stripe_width; 95 __u32 s_reserved[163]; 96}; 97 98/* for s_flags */ 99#define EXT2_FLAGS_TEST_FILESYS 0x0004 100 101/* for s_feature_compat */ 102#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 103 104/* for s_feature_ro_compat */ 105#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 106#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 107#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 108#define EXT4_FEATURE_RO_COMPAT_HUGE_FILE 0x0008 109#define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010 110#define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020 111#define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040 112 113/* for s_feature_incompat */ 114#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002 115#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 116#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 117#define EXT2_FEATURE_INCOMPAT_META_BG 0x0010 118#define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040 /* extents support */ 119#define EXT4_FEATURE_INCOMPAT_64BIT 0x0080 120#define EXT4_FEATURE_INCOMPAT_MMP 0x0100 121#define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200 122 123#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \ 124 EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ 125 EXT2_FEATURE_RO_COMPAT_BTREE_DIR) 126#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \ 127 EXT2_FEATURE_INCOMPAT_META_BG) 128#define EXT2_FEATURE_INCOMPAT_UNSUPPORTED ~EXT2_FEATURE_INCOMPAT_SUPP 129#define EXT2_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT2_FEATURE_RO_COMPAT_SUPP 130 131#define EXT3_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \ 132 EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ 133 EXT2_FEATURE_RO_COMPAT_BTREE_DIR) 134#define EXT3_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \ 135 EXT3_FEATURE_INCOMPAT_RECOVER| \ 136 EXT2_FEATURE_INCOMPAT_META_BG) 137#define EXT3_FEATURE_INCOMPAT_UNSUPPORTED ~EXT3_FEATURE_INCOMPAT_SUPP 138#define EXT3_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT3_FEATURE_RO_COMPAT_SUPP 139 140 141struct xfs_super_block { 142 unsigned char xs_magic[4]; 143 __u32 xs_blocksize; 144 __u64 xs_dblocks; 145 __u64 xs_rblocks; 146 __u32 xs_dummy1[2]; 147 unsigned char xs_uuid[16]; 148 __u32 xs_dummy2[15]; 149 char xs_fname[12]; 150 __u32 xs_dummy3[2]; 151 __u64 xs_icount; 152 __u64 xs_ifree; 153 __u64 xs_fdblocks; 154}; 155 156struct reiserfs_super_block { 157 __u32 rs_blocks_count; 158 __u32 rs_free_blocks; 159 __u32 rs_root_block; 160 __u32 rs_journal_block; 161 __u32 rs_journal_dev; 162 __u32 rs_orig_journal_size; 163 __u32 rs_dummy2[5]; 164 __u16 rs_blocksize; 165 __u16 rs_dummy3[3]; 166 unsigned char rs_magic[12]; 167 __u32 rs_dummy4[5]; 168 unsigned char rs_uuid[16]; 169 char rs_label[16]; 170}; 171 172struct reiser4_super_block { 173 unsigned char rs4_magic[16]; 174 __u16 rs4_dummy[2]; 175 unsigned char rs4_uuid[16]; 176 unsigned char rs4_label[16]; 177 __u64 rs4_dummy2; 178}; 179 180struct jfs_super_block { 181 unsigned char js_magic[4]; 182 __u32 js_version; 183 __u64 js_size; 184 __u32 js_bsize; 185 __u32 js_dummy1; 186 __u32 js_pbsize; 187 __u32 js_dummy2[27]; 188 unsigned char js_uuid[16]; 189 unsigned char js_label[16]; 190 unsigned char js_loguuid[16]; 191}; 192 193struct romfs_super_block { 194 unsigned char ros_magic[8]; 195 __u32 ros_dummy1[2]; 196 unsigned char ros_volume[16]; 197}; 198 199struct cramfs_super_block { 200 __u8 magic[4]; 201 __u32 size; 202 __u32 flags; 203 __u32 future; 204 __u8 signature[16]; 205 struct cramfs_info { 206 __u32 crc; 207 __u32 edition; 208 __u32 blocks; 209 __u32 files; 210 } info; 211 __u8 name[16]; 212}; 213 214struct swap_id_block { 215/* unsigned char sws_boot[1024]; */ 216 __u32 sws_version; 217 __u32 sws_lastpage; 218 __u32 sws_nrbad; 219 unsigned char sws_uuid[16]; 220 char sws_volume[16]; 221 unsigned char sws_pad[117]; 222 __u32 sws_badpg; 223}; 224 225/* Yucky misaligned values */ 226struct vfat_super_block { 227/* 00*/ unsigned char vs_ignored[3]; 228/* 03*/ unsigned char vs_sysid[8]; 229/* 0b*/ unsigned char vs_sector_size[2]; 230/* 0d*/ __u8 vs_cluster_size; 231/* 0e*/ __u16 vs_reserved; 232/* 10*/ __u8 vs_fats; 233/* 11*/ unsigned char vs_dir_entries[2]; 234/* 13*/ unsigned char vs_sectors[2]; 235/* 15*/ unsigned char vs_media; 236/* 16*/ __u16 vs_fat_length; 237/* 18*/ __u16 vs_secs_track; 238/* 1a*/ __u16 vs_heads; 239/* 1c*/ __u32 vs_hidden; 240/* 20*/ __u32 vs_total_sect; 241/* 24*/ __u32 vs_fat32_length; 242/* 28*/ __u16 vs_flags; 243/* 2a*/ __u8 vs_version[2]; 244/* 2c*/ __u32 vs_root_cluster; 245/* 30*/ __u16 vs_insfo_sector; 246/* 32*/ __u16 vs_backup_boot; 247/* 34*/ __u16 vs_reserved2[6]; 248/* 40*/ unsigned char vs_unknown[3]; 249/* 43*/ unsigned char vs_serno[4]; 250/* 47*/ unsigned char vs_label[11]; 251/* 52*/ unsigned char vs_magic[8]; 252/* 5a*/ unsigned char vs_dummy2[164]; 253/*1fe*/ unsigned char vs_pmagic[2]; 254}; 255 256/* Yucky misaligned values */ 257struct msdos_super_block { 258/* 00*/ unsigned char ms_ignored[3]; 259/* 03*/ unsigned char ms_sysid[8]; 260/* 0b*/ unsigned char ms_sector_size[2]; 261/* 0d*/ __u8 ms_cluster_size; 262/* 0e*/ __u16 ms_reserved; 263/* 10*/ __u8 ms_fats; 264/* 11*/ unsigned char ms_dir_entries[2]; 265/* 13*/ unsigned char ms_sectors[2]; 266/* 15*/ unsigned char ms_media; 267/* 16*/ __u16 ms_fat_length; 268/* 18*/ __u16 ms_secs_track; 269/* 1a*/ __u16 ms_heads; 270/* 1c*/ __u32 ms_hidden; 271/* 20*/ __u32 ms_total_sect; 272/* 24*/ unsigned char ms_unknown[3]; 273/* 27*/ unsigned char ms_serno[4]; 274/* 2b*/ unsigned char ms_label[11]; 275/* 36*/ unsigned char ms_magic[8]; 276/* 3d*/ unsigned char ms_dummy2[192]; 277/*1fe*/ unsigned char ms_pmagic[2]; 278}; 279 280struct vfat_dir_entry { 281 __u8 name[11]; 282 __u8 attr; 283 __u16 time_creat; 284 __u16 date_creat; 285 __u16 time_acc; 286 __u16 date_acc; 287 __u16 cluster_high; 288 __u16 time_write; 289 __u16 date_write; 290 __u16 cluster_low; 291 __u32 size; 292}; 293 294/* maximum number of clusters */ 295#define FAT12_MAX 0xFF4 296#define FAT16_MAX 0xFFF4 297#define FAT32_MAX 0x0FFFFFF6 298 299struct minix_super_block { 300 __u16 ms_ninodes; 301 __u16 ms_nzones; 302 __u16 ms_imap_blocks; 303 __u16 ms_zmap_blocks; 304 __u16 ms_firstdatazone; 305 __u16 ms_log_zone_size; 306 __u32 ms_max_size; 307 unsigned char ms_magic[2]; 308 __u16 ms_state; 309 __u32 ms_zones; 310}; 311 312struct mdp_superblock_s { 313 __u32 md_magic; 314 __u32 major_version; 315 __u32 minor_version; 316 __u32 patch_version; 317 __u32 gvalid_words; 318 __u32 set_uuid0; 319 __u32 ctime; 320 __u32 level; 321 __u32 size; 322 __u32 nr_disks; 323 __u32 raid_disks; 324 __u32 md_minor; 325 __u32 not_persistent; 326 __u32 set_uuid1; 327 __u32 set_uuid2; 328 __u32 set_uuid3; 329}; 330 331struct hfs_super_block { 332 char h_magic[2]; 333 char h_dummy[18]; 334 __u32 h_blksize; 335}; 336 337struct ocfs_volume_header { 338 unsigned char minor_version[4]; 339 unsigned char major_version[4]; 340 unsigned char signature[128]; 341 char mount[128]; 342 unsigned char mount_len[2]; 343}; 344 345struct ocfs_volume_label { 346 unsigned char disk_lock[48]; 347 char label[64]; 348 unsigned char label_len[2]; 349 unsigned char vol_id[16]; 350 unsigned char vol_id_len[2]; 351}; 352 353#define ocfsmajor(o) ((__u32)o.major_version[0] \ 354 + (((__u32) o.major_version[1]) << 8) \ 355 + (((__u32) o.major_version[2]) << 16) \ 356 + (((__u32) o.major_version[3]) << 24)) 357#define ocfslabellen(o) ((__u32)o.label_len[0] + (((__u32) o.label_len[1]) << 8)) 358#define ocfsmountlen(o) ((__u32)o.mount_len[0] + (((__u32) o.mount_len[1])<<8)) 359 360#define OCFS_MAGIC "OracleCFS" 361 362struct ocfs2_super_block { 363 unsigned char signature[8]; 364 unsigned char s_dummy1[184]; 365 unsigned char s_dummy2[80]; 366 char s_label[64]; 367 unsigned char s_uuid[16]; 368}; 369 370#define OCFS2_MIN_BLOCKSIZE 512 371#define OCFS2_MAX_BLOCKSIZE 4096 372 373#define OCFS2_SUPER_BLOCK_BLKNO 2 374 375#define OCFS2_SUPER_BLOCK_SIGNATURE "OCFSV2" 376 377struct oracle_asm_disk_label { 378 char dummy[32]; 379 char dl_tag[8]; 380 char dl_id[24]; 381}; 382 383#define ORACLE_ASM_DISK_LABEL_MARKED "ORCLDISK" 384#define ORACLE_ASM_DISK_LABEL_OFFSET 32 385 386struct iso_volume_descriptor { 387 unsigned char vd_type; 388 unsigned char vd_id[5]; 389 unsigned char vd_version; 390 unsigned char flags; 391 unsigned char system_id[32]; 392 unsigned char volume_id[32]; 393 unsigned char unused[8]; 394 unsigned char space_size[8]; 395 unsigned char escape_sequences[8]; 396}; 397 398/* Common gfs/gfs2 constants: */ 399#define GFS_MAGIC 0x01161970 400#define GFS_DEFAULT_BSIZE 4096 401#define GFS_SUPERBLOCK_OFFSET (0x10 * GFS_DEFAULT_BSIZE) 402#define GFS_METATYPE_SB 1 403#define GFS_FORMAT_SB 100 404#define GFS_LOCKNAME_LEN 64 405 406/* gfs1 constants: */ 407#define GFS_FORMAT_FS 1309 408#define GFS_FORMAT_MULTI 1401 409/* gfs2 constants: */ 410#define GFS2_FORMAT_FS 1801 411#define GFS2_FORMAT_MULTI 1900 412 413struct gfs2_meta_header { 414 __u32 mh_magic; 415 __u32 mh_type; 416 __u64 __pad0; /* Was generation number in gfs1 */ 417 __u32 mh_format; 418 __u32 __pad1; /* Was incarnation number in gfs1 */ 419}; 420 421struct gfs2_inum { 422 __u64 no_formal_ino; 423 __u64 no_addr; 424}; 425 426struct gfs2_sb { 427 struct gfs2_meta_header sb_header; 428 429 __u32 sb_fs_format; 430 __u32 sb_multihost_format; 431 __u32 __pad0; /* Was superblock flags in gfs1 */ 432 433 __u32 sb_bsize; 434 __u32 sb_bsize_shift; 435 __u32 __pad1; /* Was journal segment size in gfs1 */ 436 437 struct gfs2_inum sb_master_dir; /* Was jindex dinode in gfs1 */ 438 struct gfs2_inum __pad2; /* Was rindex dinode in gfs1 */ 439 struct gfs2_inum sb_root_dir; 440 441 char sb_lockproto[GFS_LOCKNAME_LEN]; 442 char sb_locktable[GFS_LOCKNAME_LEN]; 443 /* In gfs1, quota and license dinodes followed */ 444}; 445 446struct ntfs_super_block { 447 __u8 jump[3]; 448 __u8 oem_id[8]; 449 __u8 bios_parameter_block[25]; 450 __u16 unused[2]; 451 __u64 number_of_sectors; 452 __u64 mft_cluster_location; 453 __u64 mft_mirror_cluster_location; 454 __s8 cluster_per_mft_record; 455 __u8 reserved1[3]; 456 __s8 cluster_per_index_record; 457 __u8 reserved2[3]; 458 __u64 volume_serial; 459 __u16 checksum; 460}; 461 462struct master_file_table_record { 463 __u32 magic; 464 __u16 usa_ofs; 465 __u16 usa_count; 466 __u64 lsn; 467 __u16 sequence_number; 468 __u16 link_count; 469 __u16 attrs_offset; 470 __u16 flags; 471 __u32 bytes_in_use; 472 __u32 bytes_allocated; 473} __attribute__((__packed__)); 474 475struct file_attribute { 476 __u32 type; 477 __u32 len; 478 __u8 non_resident; 479 __u8 name_len; 480 __u16 name_offset; 481 __u16 flags; 482 __u16 instance; 483 __u32 value_len; 484 __u16 value_offset; 485} __attribute__((__packed__)); 486 487#define MFT_RECORD_VOLUME 3 488#define MFT_RECORD_ATTR_VOLUME_NAME 0x60 489#define MFT_RECORD_ATTR_VOLUME_INFO 0x70 490#define MFT_RECORD_ATTR_OBJECT_ID 0x40 491#define MFT_RECORD_ATTR_END 0xffffffffu 492 493/* HFS / HFS+ */ 494struct hfs_finder_info { 495 __u32 boot_folder; 496 __u32 start_app; 497 __u32 open_folder; 498 __u32 os9_folder; 499 __u32 reserved; 500 __u32 osx_folder; 501 __u8 id[8]; 502} __attribute__((packed)); 503 504struct hfs_mdb { 505 __u8 signature[2]; 506 __u32 cr_date; 507 __u32 ls_Mod; 508 __u16 atrb; 509 __u16 nm_fls; 510 __u16 vbm_st; 511 __u16 alloc_ptr; 512 __u16 nm_al_blks; 513 __u32 al_blk_size; 514 __u32 clp_size; 515 __u16 al_bl_st; 516 __u32 nxt_cnid; 517 __u16 free_bks; 518 __u8 label_len; 519 __u8 label[27]; 520 __u32 vol_bkup; 521 __u16 vol_seq_num; 522 __u32 wr_cnt; 523 __u32 xt_clump_size; 524 __u32 ct_clump_size; 525 __u16 num_root_dirs; 526 __u32 file_count; 527 __u32 dir_count; 528 struct hfs_finder_info finder_info; 529 __u8 embed_sig[2]; 530 __u16 embed_startblock; 531 __u16 embed_blockcount; 532} __attribute__((packed)); 533 534 535#define HFS_NODE_LEAF 0xff 536#define HFSPLUS_POR_CNID 1 537 538struct hfsplus_bnode_descriptor { 539 __u32 next; 540 __u32 prev; 541 __u8 type; 542 __u8 height; 543 __u16 num_recs; 544 __u16 reserved; 545} __attribute__((packed)); 546 547struct hfsplus_bheader_record { 548 __u16 depth; 549 __u32 root; 550 __u32 leaf_count; 551 __u32 leaf_head; 552 __u32 leaf_tail; 553 __u16 node_size; 554} __attribute__((packed)); 555 556struct hfsplus_catalog_key { 557 __u16 key_len; 558 __u32 parent_id; 559 __u16 unicode_len; 560 __u8 unicode[255 * 2]; 561} __attribute__((packed)); 562 563struct hfsplus_extent { 564 __u32 start_block; 565 __u32 block_count; 566} __attribute__((packed)); 567 568#define HFSPLUS_EXTENT_COUNT 8 569struct hfsplus_fork { 570 __u64 total_size; 571 __u32 clump_size; 572 __u32 total_blocks; 573 struct hfsplus_extent extents[HFSPLUS_EXTENT_COUNT]; 574} __attribute__((packed)); 575 576struct hfsplus_vol_header { 577 __u8 signature[2]; 578 __u16 version; 579 __u32 attributes; 580 __u32 last_mount_vers; 581 __u32 reserved; 582 __u32 create_date; 583 __u32 modify_date; 584 __u32 backup_date; 585 __u32 checked_date; 586 __u32 file_count; 587 __u32 folder_count; 588 __u32 blocksize; 589 __u32 total_blocks; 590 __u32 free_blocks; 591 __u32 next_alloc; 592 __u32 rsrc_clump_sz; 593 __u32 data_clump_sz; 594 __u32 next_cnid; 595 __u32 write_count; 596 __u64 encodings_bmp; 597 struct hfs_finder_info finder_info; 598 struct hfsplus_fork alloc_file; 599 struct hfsplus_fork ext_file; 600 struct hfsplus_fork cat_file; 601 struct hfsplus_fork attr_file; 602 struct hfsplus_fork start_file; 603} __attribute__((packed)); 604 605 606/* this is lvm's label_header & pv_header combined. */ 607 608#define LVM2_ID_LEN 32 609 610struct lvm2_pv_label_header { 611 /* label_header */ 612 __u8 id[8]; /* LABELONE */ 613 __u64 sector_xl; /* Sector number of this label */ 614 __u32 crc_xl; /* From next field to end of sector */ 615 __u32 offset_xl; /* Offset from start of struct to contents */ 616 __u8 type[8]; /* LVM2 001 */ 617 /* pv_header */ 618 __u8 pv_uuid[LVM2_ID_LEN]; 619} __attribute__ ((packed)); 620 621/* 622 * Byte swap functions 623 */ 624#ifdef __GNUC__ 625#define _INLINE_ static __inline__ 626#else /* For Watcom C */ 627#define _INLINE_ static inline 628#endif 629 630static __u16 blkid_swab16(__u16 val); 631static __u32 blkid_swab32(__u32 val); 632static __u64 blkid_swab64(__u64 val); 633 634#if ((defined __GNUC__) && \ 635 (defined(__i386__) || defined(__i486__) || defined(__i586__))) 636 637#define _BLKID_HAVE_ASM_BITOPS_ 638 639_INLINE_ __u32 blkid_swab32(__u32 val) 640{ 641#ifdef EXT2FS_REQUIRE_486 642 __asm__("bswap %0" : "=r" (val) : "0" (val)); 643#else 644 __asm__("xchgb %b0,%h0\n\t" /* swap lower bytes */ 645 "rorl $16,%0\n\t" /* swap words */ 646 "xchgb %b0,%h0" /* swap higher bytes */ 647 :"=q" (val) 648 : "0" (val)); 649#endif 650 return val; 651} 652 653_INLINE_ __u16 blkid_swab16(__u16 val) 654{ 655 __asm__("xchgb %b0,%h0" /* swap bytes */ \ 656 : "=q" (val) \ 657 : "0" (val)); \ 658 return val; 659} 660 661_INLINE_ __u64 blkid_swab64(__u64 val) 662{ 663 return (blkid_swab32(val >> 32) | 664 (((__u64) blkid_swab32(val & 0xFFFFFFFFUL)) << 32)); 665} 666#endif 667 668#if !defined(_BLKID_HAVE_ASM_BITOPS_) 669 670_INLINE_ __u16 blkid_swab16(__u16 val) 671{ 672 return (val >> 8) | (val << 8); 673} 674 675_INLINE_ __u32 blkid_swab32(__u32 val) 676{ 677 return ((val>>24) | ((val>>8)&0xFF00) | 678 ((val<<8)&0xFF0000) | (val<<24)); 679} 680 681_INLINE_ __u64 blkid_swab64(__u64 val) 682{ 683 return (blkid_swab32(val >> 32) | 684 (((__u64) blkid_swab32(val & 0xFFFFFFFFUL)) << 32)); 685} 686#endif 687 688 689 690#ifdef WORDS_BIGENDIAN 691#define blkid_le16(x) blkid_swab16(x) 692#define blkid_le32(x) blkid_swab32(x) 693#define blkid_le64(x) blkid_swab64(x) 694#define blkid_be16(x) (x) 695#define blkid_be32(x) (x) 696#define blkid_be64(x) (x) 697#else 698#define blkid_le16(x) (x) 699#define blkid_le32(x) (x) 700#define blkid_le64(x) (x) 701#define blkid_be16(x) blkid_swab16(x) 702#define blkid_be32(x) blkid_swab32(x) 703#define blkid_be64(x) blkid_swab64(x) 704#endif 705 706#undef _INLINE_ 707 708#endif /* _BLKID_PROBE_H */ 709