1 /*- 2 * Copyright (c) 2010-2012 Semihalf 3 * Copyright (c) 2008, 2009 Reinoud Zandijk 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * Original definitions written by Koji Sato <koji@osrg.net> 27 * and Ryusuke Konishi <ryusuke@osrg.net> 28 * From: NetBSD: nandfs_fs.h,v 1.1 2009/07/18 16:31:42 reinoud 29 * 30 * $FreeBSD: stable/10/sys/fs/nandfs/nandfs_fs.h 235537 2012-05-17 10:11:18Z gber $ 31 */ 32 33 #ifndef _NANDFS_FS_H 34 #define _NANDFS_FS_H 35 36 #include <sys/uuid.h> 37 38 #define MNINDIR(fsdev) ((fsdev)->nd_blocksize / sizeof(nandfs_daddr_t)) 39 40 /* 41 * Inode structure. There are a few dedicated inode numbers that are 42 * defined here first. 43 */ 44 #define NANDFS_WHT_INO 1 /* Whiteout ino */ 45 #define NANDFS_ROOT_INO 2 /* Root file inode */ 46 #define NANDFS_DAT_INO 3 /* DAT file */ 47 #define NANDFS_CPFILE_INO 4 /* checkpoint file */ 48 #define NANDFS_SUFILE_INO 5 /* segment usage file */ 49 #define NANDFS_IFILE_INO 6 /* ifile */ 50 #define NANDFS_GC_INO 7 /* Cleanerd node */ 51 #define NANDFS_ATIME_INO 8 /* Atime file (reserved) */ 52 #define NANDFS_XATTR_INO 9 /* Xattribute file (reserved) */ 53 #define NANDFS_SKETCH_INO 10 /* Sketch file (obsolete) */ 54 #define NANDFS_USER_INO 11 /* First user's file inode number */ 55 56 #define NANDFS_SYS_NODE(ino) \ 57 (((ino) >= NANDFS_DAT_INO) && ((ino) <= NANDFS_GC_INO)) 58 59 #define NDADDR 12 /* Direct addresses in inode. */ 60 #define NIADDR 3 /* Indirect addresses in inode. */ 61 62 typedef int64_t nandfs_daddr_t; 63 typedef int64_t nandfs_lbn_t; 64 65 struct nandfs_inode { 66 uint64_t i_blocks; /* 0: size in device blocks */ 67 uint64_t i_size; /* 8: size in bytes */ 68 uint64_t i_ctime; /* 16: creation time in seconds */ 69 uint64_t i_mtime; /* 24: modification time in seconds part*/ 70 uint32_t i_ctime_nsec; /* 32: creation time nanoseconds part */ 71 uint32_t i_mtime_nsec; /* 36: modification time in nanoseconds */ 72 uint32_t i_uid; /* 40: user id */ 73 uint32_t i_gid; /* 44: group id */ 74 uint16_t i_mode; /* 48: file mode */ 75 uint16_t i_links_count; /* 50: number of references to the inode*/ 76 uint32_t i_flags; /* 52: NANDFS_*_FL flags */ 77 nandfs_daddr_t i_special; /* 56: special */ 78 nandfs_daddr_t i_db[NDADDR]; /* 64: Direct disk blocks. */ 79 nandfs_daddr_t i_ib[NIADDR]; /* 160: Indirect disk blocks. */ 80 uint64_t i_xattr; /* 184: reserved for extended attributes*/ 81 uint32_t i_generation; /* 192: file generation for NFS */ 82 uint32_t i_pad[15]; /* 196: make it 64 bits aligned */ 83 }; 84 85 #ifdef _KERNEL 86 CTASSERT(sizeof(struct nandfs_inode) == 256); 87 #endif 88 89 /* 90 * Each checkpoint/snapshot has a super root. 91 * 92 * The super root holds the inodes of the three system files: `dat', `cp' and 93 * 'su' files. All other FS state is defined by those. 94 * 95 * It is CRC checksum'ed and time stamped. 96 */ 97 98 struct nandfs_super_root { 99 uint32_t sr_sum; /* check-sum */ 100 uint16_t sr_bytes; /* byte count of this structure */ 101 uint16_t sr_flags; /* reserved for flags */ 102 uint64_t sr_nongc_ctime; /* timestamp, not for cleaner(?) */ 103 struct nandfs_inode sr_dat; /* DAT, virt->phys translation inode */ 104 struct nandfs_inode sr_cpfile; /* CP, checkpoints inode */ 105 struct nandfs_inode sr_sufile; /* SU, segment usage inode */ 106 }; 107 108 #define NANDFS_SR_MDT_OFFSET(inode_size, i) \ 109 ((uint32_t)&((struct nandfs_super_root *)0)->sr_dat + \ 110 (inode_size) * (i)) 111 112 #define NANDFS_SR_DAT_OFFSET(inode_size) NANDFS_SR_MDT_OFFSET(inode_size, 0) 113 #define NANDFS_SR_CPFILE_OFFSET(inode_size) NANDFS_SR_MDT_OFFSET(inode_size, 1) 114 #define NANDFS_SR_SUFILE_OFFSET(inode_size) NANDFS_SR_MDT_OFFSET(inode_size, 2) 115 #define NANDFS_SR_BYTES (sizeof(struct nandfs_super_root)) 116 117 /* 118 * The superblock describes the basic structure and mount history. It also 119 * records some sizes of structures found on the disc for sanity checks. 120 * 121 * The superblock is stored at two places: NANDFS_SB_OFFSET_BYTES and 122 * NANDFS_SB2_OFFSET_BYTES. 123 */ 124 125 /* File system states stored on media in superblock's sbp->s_state */ 126 #define NANDFS_VALID_FS 0x0001 /* cleanly unmounted and all is ok */ 127 #define NANDFS_ERROR_FS 0x0002 /* there were errors detected, fsck */ 128 #define NANDFS_RESIZE_FS 0x0004 /* resize required, XXX unknown flag*/ 129 #define NANDFS_MOUNT_STATE_BITS "\20\1VALID_FS\2ERROR_FS\3RESIZE_FS" 130 131 /* 132 * Brief description of control structures: 133 * 134 * NANDFS_NFSAREAS first blocks contain fsdata and some amount of super blocks. 135 * Simple round-robin policy is used in order to choose which block will 136 * contain new super block. 137 * 138 * Simple case with 2 blocks: 139 * 1: fsdata sblock1 [sblock3 [sblock5 ..]] 140 * 2: fsdata sblock2 [sblock4 [sblock6 ..]] 141 */ 142 struct nandfs_fsdata { 143 uint16_t f_magic; 144 uint16_t f_bytes; 145 146 uint32_t f_sum; /* checksum of fsdata */ 147 uint32_t f_rev_level; /* major disk format revision */ 148 149 uint64_t f_ctime; /* creation time (execution time 150 of newfs) */ 151 /* Block size represented as: blocksize = 1 << (f_log_block_size + 10) */ 152 uint32_t f_log_block_size; 153 154 uint16_t f_inode_size; /* size of an inode */ 155 uint16_t f_dat_entry_size; /* size of a dat entry */ 156 uint16_t f_checkpoint_size; /* size of a checkpoint */ 157 uint16_t f_segment_usage_size; /* size of a segment usage */ 158 159 uint16_t f_sbbytes; /* byte count of CRC calculation 160 for super blocks. s_reserved 161 is excluded! */ 162 163 uint16_t f_errors; /* behaviour on detecting errors */ 164 165 uint32_t f_erasesize; 166 uint64_t f_nsegments; /* number of segm. in filesystem */ 167 nandfs_daddr_t f_first_data_block; /* 1st seg disk block number */ 168 uint32_t f_blocks_per_segment; /* number of blocks per segment */ 169 uint32_t f_r_segments_percentage; /* reserved segments percentage */ 170 171 struct uuid f_uuid; /* 128-bit uuid for volume */ 172 char f_volume_name[16]; /* volume name */ 173 uint32_t f_pad[104]; 174 } __packed; 175 176 #ifdef _KERNEL 177 CTASSERT(sizeof(struct nandfs_fsdata) == 512); 178 #endif 179 180 struct nandfs_super_block { 181 uint16_t s_magic; /* magic value for identification */ 182 183 uint32_t s_sum; /* check sum of super block */ 184 185 uint64_t s_last_cno; /* last checkpoint number */ 186 uint64_t s_last_pseg; /* addr part. segm. written last */ 187 uint64_t s_last_seq; /* seq.number of seg written last */ 188 uint64_t s_free_blocks_count; /* free blocks count */ 189 190 uint64_t s_mtime; /* mount time */ 191 uint64_t s_wtime; /* write time */ 192 uint16_t s_state; /* file system state */ 193 194 char s_last_mounted[64]; /* directory where last mounted */ 195 196 uint32_t s_c_interval; /* commit interval of segment */ 197 uint32_t s_c_block_max; /* threshold of data amount for 198 the segment construction */ 199 uint32_t s_reserved[32]; /* padding to end of the block */ 200 } __packed; 201 202 #ifdef _KERNEL 203 CTASSERT(sizeof(struct nandfs_super_block) == 256); 204 #endif 205 206 #define NANDFS_FSDATA_MAGIC 0xf8da 207 #define NANDFS_SUPER_MAGIC 0x8008 208 209 #define NANDFS_NFSAREAS 4 210 #define NANDFS_DATA_OFFSET_BYTES(esize) (NANDFS_NFSAREAS * (esize)) 211 212 #define NANDFS_SBLOCK_OFFSET_BYTES (sizeof(struct nandfs_fsdata)) 213 214 #define NANDFS_DEF_BLOCKSIZE 4096 215 #define NANDFS_MIN_BLOCKSIZE 512 216 217 #define NANDFS_DEF_ERASESIZE (2 << 16) 218 219 #define NANDFS_MIN_SEGSIZE NANDFS_DEF_ERASESIZE 220 221 #define NANDFS_CURRENT_REV 9 /* current major revision */ 222 223 #define NANDFS_FSDATA_CRC_BYTES offsetof(struct nandfs_fsdata, f_pad) 224 /* Bytes count of super_block for CRC-calculation */ 225 #define NANDFS_SB_BYTES offsetof(struct nandfs_super_block, s_reserved) 226 227 /* Maximal count of links to a file */ 228 #define NANDFS_LINK_MAX 32000 229 230 /* 231 * Structure of a directory entry. 232 * 233 * Note that they can't span blocks; the rec_len fills out. 234 */ 235 236 #define NANDFS_NAME_LEN 255 237 struct nandfs_dir_entry { 238 uint64_t inode; /* inode number */ 239 uint16_t rec_len; /* directory entry length */ 240 uint8_t name_len; /* name length */ 241 uint8_t file_type; 242 char name[NANDFS_NAME_LEN]; /* file name */ 243 char pad; 244 }; 245 246 /* 247 * NANDFS_DIR_PAD defines the directory entries boundaries 248 * 249 * NOTE: It must be a multiple of 8 250 */ 251 #define NANDFS_DIR_PAD 8 252 #define NANDFS_DIR_ROUND (NANDFS_DIR_PAD - 1) 253 #define NANDFS_DIR_NAME_OFFSET (offsetof(struct nandfs_dir_entry, name)) 254 #define NANDFS_DIR_REC_LEN(name_len) \ 255 (((name_len) + NANDFS_DIR_NAME_OFFSET + NANDFS_DIR_ROUND) \ 256 & ~NANDFS_DIR_ROUND) 257 #define NANDFS_DIR_NAME_LEN(name_len) \ 258 (NANDFS_DIR_REC_LEN(name_len) - NANDFS_DIR_NAME_OFFSET) 259 260 /* 261 * NiLFS/NANDFS devides the disc into fixed length segments. Each segment is 262 * filled with one or more partial segments of variable lengths. 263 * 264 * Each partial segment has a segment summary header followed by updates of 265 * files and optionally a super root. 266 */ 267 268 /* 269 * Virtual to physical block translation information. For data blocks it maps 270 * logical block number bi_blkoff to virtual block nr bi_vblocknr. For non 271 * datablocks it is the virtual block number assigned to an indirect block 272 * and has no bi_blkoff. The physical block number is the next 273 * available data block in the partial segment after all the binfo's. 274 */ 275 struct nandfs_binfo_v { 276 uint64_t bi_ino; /* file's inode */ 277 uint64_t bi_vblocknr; /* assigned virtual block number */ 278 uint64_t bi_blkoff; /* for file's logical block number */ 279 }; 280 281 /* 282 * DAT allocation. For data blocks just the logical block number that maps on 283 * the next available data block in the partial segment after the binfo's. 284 */ 285 struct nandfs_binfo_dat { 286 uint64_t bi_ino; 287 uint64_t bi_blkoff; /* DAT file's logical block number */ 288 uint8_t bi_level; /* whether this is meta block */ 289 uint8_t bi_pad[7]; 290 }; 291 292 #ifdef _KERNEL 293 CTASSERT(sizeof(struct nandfs_binfo_v) == sizeof(struct nandfs_binfo_dat)); 294 #endif 295 296 /* Convenience union for both types of binfo's */ 297 union nandfs_binfo { 298 struct nandfs_binfo_v bi_v; 299 struct nandfs_binfo_dat bi_dat; 300 }; 301 302 /* Indirect buffers path */ 303 struct nandfs_indir { 304 nandfs_daddr_t in_lbn; 305 int in_off; 306 }; 307 308 /* The (partial) segment summary */ 309 struct nandfs_segment_summary { 310 uint32_t ss_datasum; /* CRC of complete data block */ 311 uint32_t ss_sumsum; /* CRC of segment summary only */ 312 uint32_t ss_magic; /* magic to identify segment summary */ 313 uint16_t ss_bytes; /* size of segment summary structure */ 314 uint16_t ss_flags; /* NANDFS_SS_* flags */ 315 uint64_t ss_seq; /* sequence number of this segm. sum */ 316 uint64_t ss_create; /* creation timestamp in seconds */ 317 uint64_t ss_next; /* blocknumber of next segment */ 318 uint32_t ss_nblocks; /* number of blocks used by summary */ 319 uint32_t ss_nbinfos; /* number of binfo structures */ 320 uint32_t ss_sumbytes; /* total size of segment summary */ 321 uint32_t ss_pad; 322 /* stream of binfo structures */ 323 }; 324 325 #define NANDFS_SEGSUM_MAGIC 0x8e680011 /* segment summary magic number */ 326 327 /* Segment summary flags */ 328 #define NANDFS_SS_LOGBGN 0x0001 /* begins a logical segment */ 329 #define NANDFS_SS_LOGEND 0x0002 /* ends a logical segment */ 330 #define NANDFS_SS_SR 0x0004 /* has super root */ 331 #define NANDFS_SS_SYNDT 0x0008 /* includes data only updates */ 332 #define NANDFS_SS_GC 0x0010 /* segment written for cleaner operation */ 333 #define NANDFS_SS_FLAG_BITS "\20\1LOGBGN\2LOGEND\3SR\4SYNDT\5GC" 334 335 /* Segment summary constrains */ 336 #define NANDFS_SEG_MIN_BLOCKS 16 /* minimum number of blocks in a 337 full segment */ 338 #define NANDFS_PSEG_MIN_BLOCKS 2 /* minimum number of blocks in a 339 partial segment */ 340 #define NANDFS_MIN_NRSVSEGS 8 /* minimum number of reserved 341 segments */ 342 343 /* 344 * Structure of DAT/inode file. 345 * 346 * A DAT file is devided into groups. The maximum number of groups is the 347 * number of block group descriptors that fit into one block; this descriptor 348 * only gives the number of free entries in the associated group. 349 * 350 * Each group has a block sized bitmap indicating if an entry is taken or 351 * empty. Each bit stands for a DAT entry. 352 * 353 * The inode file has exactly the same format only the entries are inode 354 * entries. 355 */ 356 357 struct nandfs_block_group_desc { 358 uint32_t bg_nfrees; /* num. free entries in block group */ 359 }; 360 361 /* DAT entry in a super root's DAT file */ 362 struct nandfs_dat_entry { 363 uint64_t de_blocknr; /* block number */ 364 uint64_t de_start; /* valid from checkpoint */ 365 uint64_t de_end; /* valid till checkpoint */ 366 uint64_t de_rsv; /* reserved for future use */ 367 }; 368 369 /* 370 * Structure of CP file. 371 * 372 * A snapshot is just a checkpoint only it's protected against removal by the 373 * cleaner. The snapshots are kept on a double linked list of checkpoints. 374 */ 375 struct nandfs_snapshot_list { 376 uint64_t ssl_next; /* checkpoint nr. forward */ 377 uint64_t ssl_prev; /* checkpoint nr. back */ 378 }; 379 380 /* Checkpoint entry structure */ 381 struct nandfs_checkpoint { 382 uint32_t cp_flags; /* NANDFS_CHECKPOINT_* flags */ 383 uint32_t cp_checkpoints_count; /* ZERO, not used anymore? */ 384 struct nandfs_snapshot_list cp_snapshot_list; /* list of snapshots */ 385 uint64_t cp_cno; /* checkpoint number */ 386 uint64_t cp_create; /* creation timestamp */ 387 uint64_t cp_nblk_inc; /* number of blocks incremented */ 388 uint64_t cp_blocks_count; /* reserved (might be deleted) */ 389 struct nandfs_inode cp_ifile_inode; /* inode file inode */ 390 }; 391 392 /* Checkpoint flags */ 393 #define NANDFS_CHECKPOINT_SNAPSHOT 1 394 #define NANDFS_CHECKPOINT_INVALID 2 395 #define NANDFS_CHECKPOINT_SKETCH 4 396 #define NANDFS_CHECKPOINT_MINOR 8 397 #define NANDFS_CHECKPOINT_BITS "\20\1SNAPSHOT\2INVALID\3SKETCH\4MINOR" 398 399 /* Header of the checkpoint file */ 400 struct nandfs_cpfile_header { 401 uint64_t ch_ncheckpoints; /* number of checkpoints */ 402 uint64_t ch_nsnapshots; /* number of snapshots */ 403 struct nandfs_snapshot_list ch_snapshot_list; /* snapshot list */ 404 }; 405 406 #define NANDFS_CPFILE_FIRST_CHECKPOINT_OFFSET \ 407 ((sizeof(struct nandfs_cpfile_header) + \ 408 sizeof(struct nandfs_checkpoint) - 1) / \ 409 sizeof(struct nandfs_checkpoint)) 410 411 412 #define NANDFS_NOSEGMENT 0xffffffff 413 414 /* 415 * Structure of SU file. 416 * 417 * The segment usage file sums up how each of the segments are used. They are 418 * indexed by their segment number. 419 */ 420 421 /* Segment usage entry */ 422 struct nandfs_segment_usage { 423 uint64_t su_lastmod; /* last modified timestamp */ 424 uint32_t su_nblocks; /* number of blocks in segment */ 425 uint32_t su_flags; /* NANDFS_SEGMENT_USAGE_* flags */ 426 }; 427 428 /* Segment usage flag */ 429 #define NANDFS_SEGMENT_USAGE_ACTIVE 1 430 #define NANDFS_SEGMENT_USAGE_DIRTY 2 431 #define NANDFS_SEGMENT_USAGE_ERROR 4 432 #define NANDFS_SEGMENT_USAGE_GC 8 433 #define NANDFS_SEGMENT_USAGE_BITS "\20\1ACTIVE\2DIRTY\3ERROR" 434 435 /* Header of the segment usage file */ 436 struct nandfs_sufile_header { 437 uint64_t sh_ncleansegs; /* number of segments marked clean */ 438 uint64_t sh_ndirtysegs; /* number of segments marked dirty */ 439 uint64_t sh_last_alloc; /* last allocated segment number */ 440 }; 441 442 #define NANDFS_SUFILE_FIRST_SEGMENT_USAGE_OFFSET \ 443 ((sizeof(struct nandfs_sufile_header) + \ 444 sizeof(struct nandfs_segment_usage) - 1) / \ 445 sizeof(struct nandfs_segment_usage)) 446 447 struct nandfs_seg_stat { 448 uint64_t nss_nsegs; 449 uint64_t nss_ncleansegs; 450 uint64_t nss_ndirtysegs; 451 uint64_t nss_ctime; 452 uint64_t nss_nongc_ctime; 453 uint64_t nss_prot_seq; 454 }; 455 456 enum { 457 NANDFS_CHECKPOINT, 458 NANDFS_SNAPSHOT 459 }; 460 461 #define NANDFS_CPINFO_MAX 512 462 463 struct nandfs_cpinfo { 464 uint32_t nci_flags; 465 uint32_t nci_pad; 466 uint64_t nci_cno; 467 uint64_t nci_create; 468 uint64_t nci_nblk_inc; 469 uint64_t nci_blocks_count; 470 uint64_t nci_next; 471 }; 472 473 #define NANDFS_SEGMENTS_MAX 512 474 475 struct nandfs_suinfo { 476 uint64_t nsi_num; 477 uint64_t nsi_lastmod; 478 uint32_t nsi_blocks; 479 uint32_t nsi_flags; 480 }; 481 482 #define NANDFS_VINFO_MAX 512 483 484 struct nandfs_vinfo { 485 uint64_t nvi_ino; 486 uint64_t nvi_vblocknr; 487 uint64_t nvi_start; 488 uint64_t nvi_end; 489 uint64_t nvi_blocknr; 490 int nvi_alive; 491 }; 492 493 struct nandfs_cpmode { 494 uint64_t ncpm_cno; 495 uint32_t ncpm_mode; 496 uint32_t ncpm_pad; 497 }; 498 499 struct nandfs_argv { 500 uint64_t nv_base; 501 uint32_t nv_nmembs; 502 uint16_t nv_size; 503 uint16_t nv_flags; 504 uint64_t nv_index; 505 }; 506 507 struct nandfs_cpstat { 508 uint64_t ncp_cno; 509 uint64_t ncp_ncps; 510 uint64_t ncp_nss; 511 }; 512 513 struct nandfs_period { 514 uint64_t p_start; 515 uint64_t p_end; 516 }; 517 518 struct nandfs_vdesc { 519 uint64_t vd_ino; 520 uint64_t vd_cno; 521 uint64_t vd_vblocknr; 522 struct nandfs_period vd_period; 523 uint64_t vd_blocknr; 524 uint64_t vd_offset; 525 uint32_t vd_flags; 526 uint32_t vd_pad; 527 }; 528 529 struct nandfs_bdesc { 530 uint64_t bd_ino; 531 uint64_t bd_oblocknr; 532 uint64_t bd_blocknr; 533 uint64_t bd_offset; 534 uint32_t bd_level; 535 uint32_t bd_alive; 536 }; 537 538 #ifndef _KERNEL 539 #ifndef MNAMELEN 540 #define MNAMELEN 88 541 #endif 542 #endif 543 544 struct nandfs_fsinfo { 545 struct nandfs_fsdata fs_fsdata; 546 struct nandfs_super_block fs_super; 547 char fs_dev[MNAMELEN]; 548 }; 549 550 #define NANDFS_MAX_MOUNTS 65535 551 552 #define NANDFS_IOCTL_GET_SUSTAT _IOR('N', 100, struct nandfs_seg_stat) 553 #define NANDFS_IOCTL_CHANGE_CPMODE _IOWR('N', 101, struct nandfs_cpmode) 554 #define NANDFS_IOCTL_GET_CPINFO _IOWR('N', 102, struct nandfs_argv) 555 #define NANDFS_IOCTL_DELETE_CP _IOWR('N', 103, uint64_t[2]) 556 #define NANDFS_IOCTL_GET_CPSTAT _IOR('N', 104, struct nandfs_cpstat) 557 #define NANDFS_IOCTL_GET_SUINFO _IOWR('N', 105, struct nandfs_argv) 558 #define NANDFS_IOCTL_GET_VINFO _IOWR('N', 106, struct nandfs_argv) 559 #define NANDFS_IOCTL_GET_BDESCS _IOWR('N', 107, struct nandfs_argv) 560 #define NANDFS_IOCTL_GET_FSINFO _IOR('N', 108, struct nandfs_fsinfo) 561 #define NANDFS_IOCTL_MAKE_SNAP _IOWR('N', 109, uint64_t) 562 #define NANDFS_IOCTL_DELETE_SNAP _IOWR('N', 110, uint64_t) 563 #define NANDFS_IOCTL_SYNC _IOWR('N', 111, uint64_t) 564 565 #endif /* _NANDFS_FS_H */ 566