btrfs.c revision 2060d973824354a3ed2f4dadf8b5326885db9445
1/* 2 * Copyright (c) 2016 Jeff Mahoney <jeffm@suse.com> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28#include "defs.h" 29 30#ifdef HAVE_LINUX_BTRFS_H 31 32#include DEF_MPERS_TYPE(struct_btrfs_ioctl_dev_replace_args) 33#include DEF_MPERS_TYPE(struct_btrfs_ioctl_send_args) 34#include DEF_MPERS_TYPE(struct_btrfs_ioctl_received_subvol_args) 35 36# include <linux/btrfs.h> 37 38typedef struct btrfs_ioctl_dev_replace_args 39 struct_btrfs_ioctl_dev_replace_args; 40typedef struct btrfs_ioctl_send_args 41 struct_btrfs_ioctl_send_args; 42typedef struct btrfs_ioctl_received_subvol_args 43 struct_btrfs_ioctl_received_subvol_args; 44 45#endif /* HAVE_LINUX_BTRFS_H */ 46 47#include MPERS_DEFS 48 49#ifdef HAVE_LINUX_BTRFS_H 50 51#include <linux/fs.h> 52 53/* 54 * Prior to Linux 3.12, the BTRFS_IOC_DEFAULT_SUBVOL used u64 in 55 * its definition, which isn't exported by the kernel. 56 */ 57typedef __u64 u64; 58 59#ifndef HAVE_STRUCT_BTRFS_IOCTL_FEATURE_FLAGS_COMPAT_FLAGS 60struct btrfs_ioctl_feature_flags { 61 uint64_t compat_flags; 62 uint64_t compat_ro_flags; 63 uint64_t incompat_flags; 64}; 65#endif 66 67#ifndef HAVE_STRUCT_BTRFS_IOCTL_DEFRAG_RANGE_ARGS_START 68struct btrfs_ioctl_defrag_range_args { 69 uint64_t start; 70 uint64_t len; 71 uint64_t flags; 72 uint32_t extent_thresh; 73 uint32_t compress_type; 74 uint32_t unused[4]; 75}; 76#endif 77 78#ifndef BTRFS_LABEL_SIZE 79# define BTRFS_LABEL_SIZE 256 80#endif 81 82#ifndef BTRFS_FIRST_FREE_OBJECTID 83# define BTRFS_FIRST_FREE_OBJECTID 256ULL 84#endif 85 86#ifndef BTRFS_IOC_GET_FEATURES 87# define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ 88 struct btrfs_ioctl_feature_flags) 89# define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \ 90 struct btrfs_ioctl_feature_flags[2]) 91# define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ 92 struct btrfs_ioctl_feature_flags[3]) 93#endif 94 95#ifndef BTRFS_IOC_TREE_SEARCH_V2 96# define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \ 97 struct btrfs_ioctl_search_args_v2) 98struct btrfs_ioctl_search_args_v2 { 99 struct btrfs_ioctl_search_key key; /* in/out - search parameters */ 100 uint64_t buf_size; /* in - size of buffer 101 * out - on EOVERFLOW: needed size 102 * to store item */ 103 uint64_t buf[0]; /* out - found items */ 104}; 105#endif 106 107#include "xlat/btrfs_balance_args.h" 108#include "xlat/btrfs_balance_ctl_cmds.h" 109#include "xlat/btrfs_balance_flags.h" 110#include "xlat/btrfs_balance_state.h" 111#include "xlat/btrfs_compress_types.h" 112#include "xlat/btrfs_defrag_flags.h" 113#include "xlat/btrfs_dev_replace_cmds.h" 114#include "xlat/btrfs_dev_replace_results.h" 115#include "xlat/btrfs_dev_replace_state.h" 116#include "xlat/btrfs_dev_stats_flags.h" 117#include "xlat/btrfs_dev_stats_values.h" 118#include "xlat/btrfs_features_compat.h" 119#include "xlat/btrfs_features_compat_ro.h" 120#include "xlat/btrfs_features_incompat.h" 121#include "xlat/btrfs_key_types.h" 122#include "xlat/btrfs_qgroup_ctl_cmds.h" 123#include "xlat/btrfs_qgroup_inherit_flags.h" 124#include "xlat/btrfs_qgroup_limit_flags.h" 125#include "xlat/btrfs_qgroup_status_flags.h" 126#include "xlat/btrfs_scrub_flags.h" 127#include "xlat/btrfs_send_flags.h" 128#include "xlat/btrfs_snap_flags_v2.h" 129#include "xlat/btrfs_space_info_flags.h" 130#include "xlat/btrfs_tree_objectids.h" 131 132static inline char 133prnibble(char v) 134{ 135 if (v >= 10) 136 return 'a' + (v - 10); 137 return '0' + v; 138} 139 140/* 8-4-4-4-12 = 36 characters */ 141#define UUID_STRING_SIZE 36 142 143/* Formats uuid, returns 0 if it's all zeroes */ 144static int 145btrfs_unparse_uuid(unsigned char *uuid, char *out) 146{ 147 int i; 148 int ret = 0; 149 for (i = 0; i < BTRFS_UUID_SIZE; i++) { 150 if (i == 4 || i == 6 || i == 8 || i == 10) 151 *out++ = '-'; 152 *out++ = prnibble(uuid[i] >> 4); 153 *out++ = prnibble(uuid[i] & 0xf); 154 if (uuid[i]) 155 ret = 1; 156 } 157 *out = '\0'; 158 return ret; 159} 160 161static void 162print_u64(const char *name, uint64_t value) 163{ 164 tprintf(", %s=%" PRIu64, name, value); 165 if (value == UINT64_MAX) 166 tprints(" /* UINT64_MAX */"); 167} 168 169#define print_member_u64(obj, name) print_u64(#name, obj->name) 170 171static void 172btrfs_print_balance_args(const char *name, const struct btrfs_balance_args *bba) 173{ 174 tprintf(", %s={profiles=", name); 175 printflags64(btrfs_space_info_flags, bba->profiles, 176 "BTRFS_BLOCK_GROUP_???"); 177 print_member_u64(bba, usage); 178 print_member_u64(bba, devid); 179 print_member_u64(bba, pstart); 180 print_member_u64(bba, pend); 181 print_member_u64(bba, vstart); 182 print_member_u64(bba, vend); 183 print_member_u64(bba, target); 184 tprints(", flags="); 185 printflags64(btrfs_balance_args, bba->flags, "BTRFS_BALANCE_ARGS_???"); 186 tprints("}"); 187} 188 189static void 190btrfs_print_balance(struct tcb *tcp, const long arg, bool out) 191{ 192 struct btrfs_ioctl_balance_args balance_args; 193 194 if (umove_or_printaddr(tcp, arg, &balance_args)) 195 return; 196 197 tprints("{flags="); 198 printflags64(btrfs_balance_flags, balance_args.flags, 199 "BTRFS_BALANCE_???"); 200 if (out) { 201 tprints(", state="); 202 printflags64(btrfs_balance_state, balance_args.state, 203 "BTRFS_BALANCE_STATE_???"); 204 } 205 206 if (balance_args.flags & BTRFS_BALANCE_DATA) 207 btrfs_print_balance_args("data", &balance_args.data); 208 if (balance_args.flags & BTRFS_BALANCE_METADATA) 209 btrfs_print_balance_args("meta", &balance_args.meta); 210 if (balance_args.flags & BTRFS_BALANCE_SYSTEM) 211 btrfs_print_balance_args("sys", &balance_args.sys); 212 tprints("}"); 213} 214 215static void 216btrfs_print_features(const struct btrfs_ioctl_feature_flags *flags) 217{ 218 tprints("{compat_flags="); 219 printflags64(btrfs_features_compat, flags->compat_flags, 220 "BTRFS_FEATURE_COMPAT_???"); 221 222 tprints(", compat_ro_flags="); 223 printflags64(btrfs_features_compat_ro, flags->compat_ro_flags, 224 "BTRFS_FEATURE_COMPAT_RO_???"); 225 226 tprints(", incompat_flags="); 227 printflags64(btrfs_features_incompat, flags->incompat_flags, 228 "BTRFS_FEATURE_INCOMPAT_???"); 229 tprints("}"); 230} 231 232static void 233btrfs_print_qgroup_limit(const struct btrfs_qgroup_limit *lim) 234{ 235 tprints("{flags="); 236 printflags64(btrfs_qgroup_limit_flags, lim->flags, 237 "BTRFS_QGROUP_LIMIT_???"); 238 tprintf(", max_rfer=%" PRI__u64 ", max_excl=%" PRI__u64 239 ", rsv_rfer=%" PRI__u64 ", rsv_excl=%" PRI__u64 "}", 240 lim->max_rfer, lim->max_excl, 241 lim->rsv_rfer, lim->rsv_excl); 242} 243 244static void 245btrfs_print_key_type(uint32_t type) 246{ 247 const char *str = xlookup(btrfs_key_types, type); 248 tprintf("%u", type); 249 if (str) 250 tprintf(" /* %s */", str); 251} 252 253static void 254btrfs_print_objectid(uint64_t objectid) 255{ 256 const char *str = xlookup(btrfs_tree_objectids, objectid); 257 tprintf("%" PRIu64, objectid); 258 if (str) 259 tprintf(" /* %s */", str); 260} 261 262static void 263btrfs_print_data_container_header(const struct btrfs_data_container *container) 264{ 265 tprintf("{bytes_left=%u, bytes_missing=%u" 266 ", elem_cnt=%u, elem_missed=%u, val=", 267 container->bytes_left, container->bytes_missing, 268 container->elem_cnt, container->elem_missed); 269} 270 271static void 272btrfs_print_data_container_footer(void) 273{ 274 tprints("}"); 275} 276 277static bool 278print_btrfs_data_container_logical_ino(struct tcb *tcp, void *elem_buf, 279 size_t elem_size, void *data) 280{ 281 const uint64_t *const record = elem_buf; 282 283 tprintf("{inum=%" PRIu64 ", offset=%" PRIu64 ", root=%" PRIu64 "}", 284 record[0], record[1], record[2]); 285 286 return true; 287} 288 289static void 290btrfs_print_logical_ino_container(struct tcb *tcp, 291 const uint64_t inodes_addr) 292{ 293 struct btrfs_data_container container; 294 295 if (umove_or_printaddr(tcp, inodes_addr, &container)) 296 return; 297 298 btrfs_print_data_container_header(&container); 299 300 if (abbrev(tcp)) { 301 tprints("..."); 302 } else { 303 const uint64_t val_addr = 304 inodes_addr + offsetof(typeof(container), val); 305 uint64_t record[3]; 306 print_array(tcp, val_addr, container.elem_cnt / 3, 307 record, sizeof(record), 308 umoven_or_printaddr, 309 print_btrfs_data_container_logical_ino, 0); 310 } 311 312 btrfs_print_data_container_footer(); 313} 314 315static bool 316print_btrfs_data_container_ino_path(struct tcb *tcp, void *elem_buf, 317 size_t elem_size, void *data) 318{ 319 const uint64_t *const offset = elem_buf; 320 const uint64_t *const val_addr = data; 321 322 printpath(tcp, *val_addr + *offset); 323 324 return true; 325} 326 327static void 328btrfs_print_ino_path_container(struct tcb *tcp, 329 const uint64_t fspath_addr) 330{ 331 struct btrfs_data_container container; 332 333 if (umove_or_printaddr(tcp, fspath_addr, &container)) 334 return; 335 336 btrfs_print_data_container_header(&container); 337 338 if (abbrev(tcp)) { 339 tprints("..."); 340 } else { 341 uint64_t val_addr = 342 fspath_addr + offsetof(typeof(container), val); 343 uint64_t offset; 344 print_array(tcp, val_addr, container.elem_cnt, 345 &offset, sizeof(offset), 346 umoven_or_printaddr, 347 print_btrfs_data_container_ino_path, &val_addr); 348 } 349 350 btrfs_print_data_container_footer(); 351} 352 353static bool 354print_uint64(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data) 355{ 356 tprintf("%" PRIu64, * (uint64_t *) elem_buf); 357 358 return true; 359} 360 361static void 362btrfs_print_qgroup_inherit(struct tcb *tcp, const uint64_t qgi_addr) 363{ 364 struct btrfs_qgroup_inherit inherit; 365 366 if (umove_or_printaddr(tcp, qgi_addr, &inherit)) 367 return; 368 369 tprintf("{flags="); 370 printflags64(btrfs_qgroup_inherit_flags, inherit.flags, 371 "BTRFS_QGROUP_INHERIT_???"); 372 tprintf(", num_qgroups=%" PRI__u64 ", num_ref_copies=%" PRI__u64 373 ", num_excl_copies=%" PRI__u64 ", lim=", 374 inherit.num_qgroups, inherit.num_ref_copies, 375 inherit.num_excl_copies); 376 377 btrfs_print_qgroup_limit(&inherit.lim); 378 379 tprints(", qgroups="); 380 381 if (abbrev(tcp)) { 382 tprints("..."); 383 } else { 384 uint64_t record; 385 print_array(tcp, qgi_addr + offsetof(typeof(inherit), qgroups), 386 inherit.num_qgroups, &record, sizeof(record), 387 umoven_or_printaddr, print_uint64, 0); 388 } 389 tprints("}"); 390} 391 392static void 393print_key_value_internal(struct tcb *tcp, const char *name, uint64_t value) 394{ 395 if (value) { 396 tprintf(", %s=%" PRIu64, name, value); 397 if (value == UINT64_MAX) 398 tprints(" /* UINT64_MAX */"); 399 } 400} 401#define print_key_value(tcp, key, name) \ 402 print_key_value_internal((tcp), #name, (key)->name) 403 404static bool 405print_btrfs_ioctl_search_header(struct tcb *tcp, void *elem_buf, 406 size_t elem_size, void *data) 407{ 408 const struct btrfs_ioctl_search_header *sh = elem_buf; 409 410 tprintf("{transid=%" PRI__u64 ", objectid=", sh->transid); 411 btrfs_print_objectid(sh->objectid); 412 tprintf(", offset=%" PRI__u64 ", type=", sh->offset); 413 btrfs_print_key_type(sh->type); 414 tprintf(", len=%u}", sh->len); 415 416 return true; 417} 418 419static void 420btrfs_print_tree_search(struct tcb *tcp, struct btrfs_ioctl_search_key *key, 421 uint64_t buf_addr, uint64_t buf_size, bool print_size) 422{ 423 if (entering(tcp)) { 424 tprintf("{key={tree_id="); 425 btrfs_print_objectid(key->tree_id); 426 427 if (key->min_objectid != BTRFS_FIRST_FREE_OBJECTID || 428 !abbrev(tcp)) { 429 tprints(", min_objectid="); 430 btrfs_print_objectid(key->min_objectid); 431 } 432 433 if (key->max_objectid != BTRFS_LAST_FREE_OBJECTID || 434 !abbrev(tcp)) { 435 tprints(", max_objectid="); 436 btrfs_print_objectid(key->max_objectid); 437 } 438 439 print_key_value(tcp, key, min_offset); 440 print_key_value(tcp, key, max_offset); 441 print_key_value(tcp, key, min_transid); 442 print_key_value(tcp, key, max_transid); 443 444 tprints(", min_type="); 445 btrfs_print_key_type(key->min_type); 446 tprints(", max_type="); 447 btrfs_print_key_type(key->max_type); 448 tprintf(", nr_items=%u}", key->nr_items); 449 if (print_size) 450 tprintf(", buf_size=%" PRIu64, buf_size); 451 tprints("}"); 452 } else { 453 tprintf("{key={nr_items=%u}", key->nr_items); 454 if (print_size) 455 tprintf(", buf_size=%" PRIu64, buf_size); 456 tprints(", buf="); 457 if (abbrev(tcp)) 458 tprints("..."); 459 else { 460 struct btrfs_ioctl_search_header sh; 461 462 print_array(tcp, buf_addr, key->nr_items, 463 &sh, sizeof(sh), 464 umoven_or_printaddr, 465 print_btrfs_ioctl_search_header, 0); 466 } 467 tprints("}"); 468 } 469} 470 471static bool 472print_objectid_callback(struct tcb *tcp, void *elem_buf, 473 size_t elem_size, void *data) 474{ 475 btrfs_print_objectid(* (uint64_t *) elem_buf); 476 477 return true; 478} 479 480static bool 481print_btrfs_ioctl_space_info(struct tcb *tcp, void *elem_buf, 482 size_t elem_size, void *data) 483{ 484 const struct btrfs_ioctl_space_info *info = elem_buf; 485 486 tprints("{flags="); 487 printflags64(btrfs_space_info_flags, info->flags, 488 "BTRFS_SPACE_INFO_???"); 489 tprintf(", total_bytes=%" PRI__u64 ", used_bytes=%" PRI__u64 "}", 490 info->total_bytes, info->used_bytes); 491 492 return true; 493} 494 495MPERS_PRINTER_DECL(int, btrfs_ioctl, 496 struct tcb *tcp, const unsigned int code, const long arg) 497{ 498 switch (code) { 499 /* Take no arguments; command only. */ 500 case BTRFS_IOC_TRANS_START: 501 case BTRFS_IOC_TRANS_END: 502 case BTRFS_IOC_SYNC: 503 case BTRFS_IOC_SCRUB_CANCEL: 504 case BTRFS_IOC_QUOTA_RESCAN_WAIT: 505 /* 506 * The codes for these ioctls are based on each accepting a 507 * vol_args but none of them actually consume an argument. 508 */ 509 case BTRFS_IOC_DEFRAG: 510 case BTRFS_IOC_BALANCE: 511 break; 512 513 /* takes a signed int */ 514 case BTRFS_IOC_BALANCE_CTL: 515 tprints(", "); 516 printxval(btrfs_balance_ctl_cmds, arg, "BTRFS_BALANCE_CTL_???"); 517 break; 518 519 /* returns a 64 */ 520 case BTRFS_IOC_START_SYNC: /* R */ 521 if (entering(tcp)) 522 return 0; 523 /* fall through */ 524 /* takes a u64 */ 525 case BTRFS_IOC_DEFAULT_SUBVOL: /* W */ 526 case BTRFS_IOC_WAIT_SYNC: /* W */ 527 tprints(", "); 528 printnum_int64(tcp, arg, "%" PRIu64); 529 break; 530 531 /* u64 but describe a flags bitfield; we can make that symbolic */ 532 case BTRFS_IOC_SUBVOL_GETFLAGS: { /* R */ 533 uint64_t flags; 534 535 if (entering(tcp)) 536 return 0; 537 538 tprints(", "); 539 540 if (umove_or_printaddr(tcp, arg, &flags)) 541 break; 542 543 printflags64(btrfs_snap_flags_v2, flags, "BTRFS_SUBVOL_???"); 544 break; 545 } 546 547 case BTRFS_IOC_SUBVOL_SETFLAGS: { /* W */ 548 uint64_t flags; 549 550 tprints(", "); 551 552 if (umove_or_printaddr(tcp, arg, &flags)) 553 break; 554 555 printflags64(btrfs_snap_flags_v2, flags, "BTRFS_SUBVOL_???"); 556 break; 557 } 558 559 /* More complex types */ 560 case BTRFS_IOC_BALANCE_V2: /* RW */ 561 if (entering(tcp)) { 562 tprints(", "); 563 btrfs_print_balance(tcp, arg, false); 564 return 0; 565 } 566 567 if (syserror(tcp)) 568 break; 569 570 tprints(" => "); 571 btrfs_print_balance(tcp, arg, true); 572 break; 573 case BTRFS_IOC_BALANCE_PROGRESS: /* R */ 574 if (entering(tcp)) 575 return 0; 576 577 tprints(", "); 578 btrfs_print_balance(tcp, arg, true); 579 break; 580 581 case BTRFS_IOC_DEFRAG_RANGE: { /* W */ 582 struct btrfs_ioctl_defrag_range_args args; 583 584 tprints(", "); 585 586 if (umove_or_printaddr(tcp, arg, &args)) 587 break; 588 589 tprintf("{start=%" PRIu64 ", len=", (uint64_t)args.start); 590 591 tprintf("%" PRIu64, args.len); 592 if (args.len == UINT64_MAX) 593 tprints(" /* UINT64_MAX */"); 594 595 tprints(", flags="); 596 printflags64(btrfs_defrag_flags, args.flags, 597 "BTRFS_DEFRAG_RANGE_???"); 598 tprintf(", extent_thresh=%u, compress_type=", 599 args.extent_thresh); 600 printxval(btrfs_compress_types, args.compress_type, 601 "BTRFS_COMPRESS_???"); 602 tprints("}"); 603 break; 604 } 605 606 case BTRFS_IOC_DEV_INFO: { /* RW */ 607 struct btrfs_ioctl_dev_info_args args; 608 char uuid[UUID_STRING_SIZE+1]; 609 int valid; 610 611 if (entering(tcp)) 612 tprints(", "); 613 else if (syserror(tcp)) 614 break; 615 else 616 tprints(" => "); 617 if (umove_or_printaddr(tcp, arg, &args)) 618 break; 619 tprints("{"); 620 621 valid = btrfs_unparse_uuid(args.uuid, uuid); 622 if (entering(tcp)) { 623 tprintf("devid=%" PRI__u64, args.devid); 624 if (valid) 625 tprintf(", uuid=%s", uuid); 626 tprints("}"); 627 return 0; 628 } 629 if (valid) 630 tprintf("uuid=%s, ", uuid); 631 tprintf("bytes_used=%" PRI__u64 632 ", total_bytes=%" PRI__u64 ", path=", 633 args.bytes_used, args.total_bytes); 634 print_quoted_string((const char *)args.path, sizeof(args.path), 635 QUOTE_0_TERMINATED); 636 tprints("}"); 637 break; 638 } 639 640 case BTRFS_IOC_DEV_REPLACE: { /* RW */ 641 struct_btrfs_ioctl_dev_replace_args args; 642 643 if (entering(tcp)) 644 tprints(", "); 645 else if (syserror(tcp)) 646 break; 647 else 648 tprints(" => "); 649 650 if (umove_or_printaddr(tcp, arg, &args)) 651 break; 652 653 if (entering(tcp)) { 654 tprints("{cmd="); 655 printxval64(btrfs_dev_replace_cmds, args.cmd, 656 "BTRFS_IOCTL_DEV_REPLACE_CMD_???"); 657 if (args.cmd == BTRFS_IOCTL_DEV_REPLACE_CMD_START) { 658 const char *str; 659 tprintf(", start={srcdevid=%" PRIu64 660 ", cont_reading_from_srcdev_mode=%" PRIu64 661 ", srcdev_name=", 662 (uint64_t) args.start.srcdevid, 663 (uint64_t) args.start.cont_reading_from_srcdev_mode); 664 665 str = (const char*) args.start.srcdev_name; 666 print_quoted_string(str, 667 sizeof(args.start.srcdev_name), 668 QUOTE_0_TERMINATED); 669 tprints(", tgtdev_name="); 670 str = (const char*) args.start.tgtdev_name; 671 print_quoted_string(str, 672 sizeof(args.start.tgtdev_name), 673 QUOTE_0_TERMINATED); 674 tprints("}"); 675 676 } 677 tprints("}"); 678 return 0; 679 } 680 681 tprints("{result="); 682 printxval64(btrfs_dev_replace_results, args.result, 683 "BTRFS_IOCTL_DEV_REPLACE_RESULT_???"); 684 if (args.cmd == BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS) { 685 char buf[sizeof("HH:MM:SS") + 1]; 686 time_t time; 687 tprints(", "); 688 printxval64(btrfs_dev_replace_state, 689 args.status.replace_state, 690 "BTRFS_IOCTL_DEV_REPLACE_STATE_???"); 691 tprintf(", progress_1000=%" PRIu64 " /* ", 692 (uint64_t) args.status.progress_1000); 693 if (args.status.progress_1000 <= 1000) 694 tprintf("%" PRIu64 ".%.2" PRIu64 "%%", 695 (uint64_t) args.status.progress_1000 / 10, 696 (uint64_t) args.status.progress_1000 % 10); 697 else 698 tprints("???"); 699 tprints(" */ ,"); 700 701 time = args.status.time_started; 702 strftime(buf, sizeof(buf), "%T", 703 localtime(&time)); 704 tprintf("time_started=%" PRIu64" /* %s */, ", 705 (uint64_t) args.status.time_started, buf); 706 707 time = args.status.time_stopped; 708 strftime(buf, sizeof(buf), "%T", 709 localtime(&time)); 710 tprintf("time_stopped=%" PRIu64" /* %s */, ", 711 (uint64_t) args.status.time_stopped, buf); 712 713 tprintf("num_write_errors=%" PRIu64 714 ", num_uncorrectable_read_errors=%" PRIu64, 715 (uint64_t) args.status.num_write_errors, 716 (uint64_t) args.status.num_uncorrectable_read_errors); 717 } 718 tprints("}"); 719 break; 720 } 721 722 case BTRFS_IOC_GET_FEATURES: { /* R */ 723 struct btrfs_ioctl_feature_flags flags; 724 725 if (entering(tcp)) 726 return 0; 727 728 tprints(", "); 729 if (umove_or_printaddr(tcp, arg, &flags)) 730 break; 731 732 btrfs_print_features(&flags); 733 break; 734 } 735 736 case BTRFS_IOC_SET_FEATURES: { /* W */ 737 struct btrfs_ioctl_feature_flags flarg[2]; 738 739 tprints(", "); 740 741 if (umove_or_printaddr(tcp, arg, &flarg)) 742 break; 743 744 tprints("["); 745 btrfs_print_features(&flarg[0]); 746 tprints(", "); 747 btrfs_print_features(&flarg[1]); 748 tprints("]"); 749 break; 750 } 751 752 case BTRFS_IOC_GET_SUPPORTED_FEATURES: { /* R */ 753 struct btrfs_ioctl_feature_flags flarg[3]; 754 755 if (entering(tcp)) 756 return 0; 757 758 tprints(", "); 759 if (umove_or_printaddr(tcp, arg, &flarg)) 760 break; 761 762 tprints("[ /* supported */ "); 763 btrfs_print_features(&flarg[0]); 764 765 tprints(", /* safe to set */ "); 766 btrfs_print_features(&flarg[1]); 767 768 tprints(", /* safe to clear */ "); 769 btrfs_print_features(&flarg[2]); 770 tprints("]"); 771 772 break; 773 } 774 775 case BTRFS_IOC_FS_INFO: { /* R */ 776 struct btrfs_ioctl_fs_info_args args; 777 char uuid[UUID_STRING_SIZE+1]; 778 uint32_t nodesize, sectorsize, clone_alignment; 779#ifndef HAVE_STRUCT_BTRFS_IOCTL_FS_INFO_ARGS_NODESIZE 780 __u32 *reserved32; 781#endif 782 783 if (entering(tcp)) 784 return 0; 785 786 tprints(", "); 787 if (umove_or_printaddr(tcp, arg, &args)) 788 break; 789 790#ifdef HAVE_STRUCT_BTRFS_IOCTL_FS_INFO_ARGS_NODESIZE 791 nodesize = args.nodesize, 792 sectorsize = args.sectorsize, 793 clone_alignment = args.clone_alignment; 794#else 795 reserved32 = (__u32 *)args.reserved; 796 nodesize = reserved32[0]; 797 sectorsize = reserved32[1]; 798 clone_alignment = reserved32[2]; 799#endif 800 btrfs_unparse_uuid(args.fsid, uuid); 801 802 tprints("{"); 803 tprintf("max_id=%" PRI__u64 ", num_devices=%" PRI__u64 804 ", fsid=%s, nodesize=%u, sectorsize=%u" 805 ", clone_alignment=%u", 806 args.max_id, args.num_devices, uuid, 807 nodesize, sectorsize, clone_alignment); 808 tprints("}"); 809 break; 810 } 811 812 case BTRFS_IOC_GET_DEV_STATS: { /* RW */ 813 struct btrfs_ioctl_get_dev_stats args; 814 uint64_t i; 815 816 if (entering(tcp)) 817 tprints(", "); 818 else if (syserror(tcp)) 819 break; 820 else 821 tprints(" => "); 822 if (umove_or_printaddr(tcp, arg, &args)) 823 break; 824 825 tprints("{"); 826 827 if (entering(tcp)) 828 tprintf("devid=%" PRI__u64 ", ", args.devid); 829 830 tprintf("nr_items=%" PRI__u64 ", flags=", args.nr_items); 831 printflags64(btrfs_dev_stats_flags, args.flags, 832 "BTRFS_DEV_STATS_???"); 833 834 if (entering(tcp)) { 835 tprints("}"); 836 return 0; 837 } 838 839 /* 840 * The structure has a 1k limit; Let's make sure we don't 841 * go off into the middle of nowhere with a bad nr_items 842 * value. 843 */ 844 tprints(", ["); 845 for (i = 0; i < args.nr_items; i++) { 846 if (i) 847 tprints(", "); 848 if (i >= ARRAY_SIZE(args.values)) { 849 tprints("..."); 850 break; 851 } 852 const char *name = xlookup(btrfs_dev_stats_values, i); 853 if (name) 854 tprintf("/* %s */ ", name); 855 tprintf("%" PRI__u64, args.values[i]); 856 } 857 tprints("]}"); 858 break; 859 } 860 861 case BTRFS_IOC_INO_LOOKUP: { /* RW */ 862 struct btrfs_ioctl_ino_lookup_args args; 863 864 if (entering(tcp)) 865 tprints(", "); 866 else if (syserror(tcp)) 867 break; 868 else 869 tprints(" => "); 870 871 if (umove_or_printaddr(tcp, arg, &args)) 872 break; 873 874 if (entering(tcp)) { 875 /* Use subvolume id of the containing root */ 876 if (args.treeid == 0) 877 /* abuse of auxstr to retain state */ 878 tcp->auxstr = (void *)1; 879 else 880 tcp->auxstr = NULL; 881 882 tprints("{treeid="); 883 btrfs_print_objectid(args.treeid); 884 tprints(", objectid="); 885 btrfs_print_objectid(args.objectid); 886 tprints("}"); 887 return 0; 888 } 889 890 tprints("{"); 891 if (tcp->auxstr) { 892 tcp->auxstr = NULL; 893 tprints("treeid="); 894 btrfs_print_objectid(args.treeid); 895 tprints(", "); 896 } 897 898 tprints("name="); 899 print_quoted_string(args.name, sizeof(args.name), 900 QUOTE_0_TERMINATED); 901 tprints("}"); 902 break; 903 } 904 905 case BTRFS_IOC_INO_PATHS: { /* RW */ 906 struct btrfs_ioctl_ino_path_args args; 907 908 if (entering(tcp)) 909 tprints(", "); 910 else if (syserror(tcp)) 911 break; 912 else 913 tprints(" => "); 914 915 if (umove_or_printaddr(tcp, arg, &args)) 916 break; 917 918 tprints("{"); 919 920 if (entering(tcp)) { 921 tprintf("inum=%" PRI__u64 ", size=%" PRI__u64, 922 args.inum, args.size); 923 tprintf(", fspath=0x%" PRI__x64 "}", args.fspath); 924 return 0; 925 } 926 927 tprints("fspath="); 928 btrfs_print_ino_path_container(tcp, args.fspath); 929 930 tprints("}"); 931 break; 932 } 933 934 case BTRFS_IOC_LOGICAL_INO: { /* RW */ 935 struct btrfs_ioctl_logical_ino_args args; 936 937 if (entering(tcp)) 938 tprints(", "); 939 else if (syserror(tcp)) 940 break; 941 else 942 tprints(" => "); 943 944 if (umove_or_printaddr(tcp, arg, &args)) 945 break; 946 947 tprints("{"); 948 949 if (entering(tcp)) { 950 tprintf("logical=%" PRI__u64 ", size=%" PRI__u64, 951 args.logical, args.size); 952 tprintf(", inodes=0x%" PRI__x64 "}", args.inodes); 953 return 0; 954 } 955 956 tprints("inodes="); 957 btrfs_print_logical_ino_container(tcp, args.inodes); 958 959 tprints("}"); 960 break; 961 } 962 963 case BTRFS_IOC_QGROUP_ASSIGN: { /* W */ 964 struct btrfs_ioctl_qgroup_assign_args args; 965 966 tprints(", "); 967 if (umove_or_printaddr(tcp, arg, &args)) 968 break; 969 970 tprintf("{assign=%" PRI__u64 ", src=%" PRI__u64 971 ", dst=%" PRI__u64 "}", 972 args.assign, args.src, args.dst); 973 break; 974 } 975 976 case BTRFS_IOC_QGROUP_CREATE: { /* W */ 977 struct btrfs_ioctl_qgroup_create_args args; 978 979 tprints(", "); 980 if (umove_or_printaddr(tcp, arg, &args)) 981 break; 982 983 tprintf("{create=%" PRI__u64 ", qgroupid=%" PRI__u64 "}", 984 args.create, args.qgroupid); 985 break; 986 } 987 988 case BTRFS_IOC_QGROUP_LIMIT: { /* R */ 989 struct btrfs_ioctl_qgroup_limit_args args; 990 991 if (entering(tcp)) 992 return 0; 993 994 tprints(", "); 995 if (umove_or_printaddr(tcp, arg, &args)) 996 break; 997 998 tprintf("{qgroupid=%" PRI__u64 ", lim=", args.qgroupid); 999 btrfs_print_qgroup_limit(&args.lim); 1000 tprints("}"); 1001 break; 1002 } 1003 1004 case BTRFS_IOC_QUOTA_CTL: { /* W */ 1005 struct btrfs_ioctl_quota_ctl_args args; 1006 1007 tprints(", "); 1008 if (umove_or_printaddr(tcp, arg, &args)) 1009 break; 1010 1011 printxval64(btrfs_qgroup_ctl_cmds, args.cmd, 1012 "BTRFS_QUOTA_CTL_???"); 1013 tprints("}"); 1014 1015 break; 1016 } 1017 1018 case BTRFS_IOC_QUOTA_RESCAN: { /* W */ 1019 struct btrfs_ioctl_quota_rescan_args args; 1020 1021 tprints(", "); 1022 if (umove_or_printaddr(tcp, arg, &args)) 1023 break; 1024 1025 tprintf("{flags=%" PRI__u64 "}", args.flags); 1026 break; 1027 } 1028 1029 case BTRFS_IOC_QUOTA_RESCAN_STATUS: { /* R */ 1030 struct btrfs_ioctl_quota_rescan_args args; 1031 1032 if (entering(tcp)) 1033 return 0; 1034 1035 tprints(", "); 1036 if (umove_or_printaddr(tcp, arg, &args)) 1037 break; 1038 1039 tprintf("{flags=%" PRI__u64 ", progress=", args.flags); 1040 btrfs_print_objectid(args.progress); 1041 tprints("}"); 1042 break; 1043 } 1044 1045 case BTRFS_IOC_SET_RECEIVED_SUBVOL: { /* RW */ 1046 struct_btrfs_ioctl_received_subvol_args args; 1047 char uuid[UUID_STRING_SIZE+1]; 1048 1049 if (entering(tcp)) 1050 tprints(", "); 1051 else if (syserror(tcp)) 1052 break; 1053 else 1054 tprints(" => "); 1055 1056 if (umove_or_printaddr(tcp, arg, &args)) 1057 break; 1058 1059 if (entering(tcp)) { 1060 btrfs_unparse_uuid((unsigned char *)args.uuid, uuid); 1061 tprintf("{uuid=%s, stransid=%" PRIu64 1062 ", stime=%" PRIu64 ".%u, flags=%" PRIu64 1063 "}", uuid, (uint64_t) args.stransid, 1064 (uint64_t) args.stime.sec, args.stime.nsec, 1065 (uint64_t) args.flags); 1066 return 0; 1067 } 1068 tprintf("{rtransid=%" PRIu64 ", rtime=%" PRIu64 ".%u}", 1069 (uint64_t) args.rtransid, (uint64_t) args.rtime.sec, 1070 args.rtime.nsec); 1071 break; 1072 } 1073 1074 case BTRFS_IOC_SCRUB: /* RW */ 1075 case BTRFS_IOC_SCRUB_PROGRESS: { /* RW */ 1076 struct btrfs_ioctl_scrub_args args; 1077 1078 if (entering(tcp)) 1079 tprints(", "); 1080 else if (syserror(tcp)) 1081 break; 1082 else 1083 tprints(" => "); 1084 1085 if (umove_or_printaddr(tcp, arg, &args)) 1086 break; 1087 1088 if (entering(tcp)) { 1089 tprintf("{devid=%" PRI__u64, args.devid); 1090 if (code == BTRFS_IOC_SCRUB) { 1091 tprintf(", start=%" PRI__u64 ", end=", 1092 args.start); 1093 tprintf("%" PRI__u64, args.end); 1094 if (args.end == UINT64_MAX) 1095 tprints(" /* UINT64_MAX */"); 1096 tprints(", flags="); 1097 printflags64(btrfs_scrub_flags, args.flags, 1098 "BTRFS_SCRUB_???"); 1099 } 1100 tprints("}"); 1101 return 0; 1102 } 1103 tprintf("{data_extents_scrubbed=%" PRI__u64 1104 ", tree_extents_scrubbed=%" PRI__u64 1105 ", data_bytes_scrubbed=%" PRI__u64 1106 ", tree_bytes_scrubbed=%" PRI__u64 1107 ", read_errors=%" PRI__u64 1108 ", csum_errors=%" PRI__u64 1109 ", verify_errors=%" PRI__u64 1110 ", no_csum=%" PRI__u64 1111 ", csum_discards=%" PRI__u64 1112 ", super_errors=%" PRI__u64 1113 ", malloc_errors=%" PRI__u64 1114 ", uncorrectable_errors=%" PRI__u64 1115 ", corrected_errors=%" PRI__u64 1116 ", last_physical=%" PRI__u64 1117 ", unverified_errors=%" PRI__u64 "}", 1118 args.progress.data_extents_scrubbed, 1119 args.progress.tree_extents_scrubbed, 1120 args.progress.data_bytes_scrubbed, 1121 args.progress.tree_bytes_scrubbed, 1122 args.progress.read_errors, 1123 args.progress.csum_errors, 1124 args.progress.verify_errors, 1125 args.progress.no_csum, 1126 args.progress.csum_discards, 1127 args.progress.super_errors, 1128 args.progress.malloc_errors, 1129 args.progress.uncorrectable_errors, 1130 args.progress.corrected_errors, 1131 args.progress.last_physical, 1132 args.progress.unverified_errors); 1133 break; 1134 } 1135 1136 case BTRFS_IOC_TREE_SEARCH: { /* RW */ 1137 struct btrfs_ioctl_search_args args; 1138 uint64_t buf_offset; 1139 1140 if (entering(tcp)) 1141 tprints(", "); 1142 else if (syserror(tcp)) 1143 break; 1144 else 1145 tprints(" => "); 1146 1147 if (umove_or_printaddr(tcp, arg, &args)) 1148 break; 1149 1150 buf_offset = offsetof(struct btrfs_ioctl_search_args, buf); 1151 btrfs_print_tree_search(tcp, &args.key, arg + buf_offset, 1152 sizeof(args.buf), false); 1153 if (entering(tcp)) 1154 return 0; 1155 break; 1156 } 1157 1158 case BTRFS_IOC_TREE_SEARCH_V2: { /* RW */ 1159 struct btrfs_ioctl_search_args_v2 args; 1160 uint64_t buf_offset; 1161 1162 if (entering(tcp)) 1163 tprints(", "); 1164 else if (syserror(tcp)) { 1165 if (tcp->u_error == EOVERFLOW) { 1166 tprints(" => "); 1167 tcp->u_error = 0; 1168 if (!umove_or_printaddr(tcp, arg, &args)) 1169 tprintf("{buf_size=%" PRIu64 "}", 1170 (uint64_t)args.buf_size); 1171 tcp->u_error = EOVERFLOW; 1172 } 1173 break; 1174 } else 1175 tprints(" => "); 1176 1177 if (umove_or_printaddr(tcp, arg, &args)) 1178 break; 1179 1180 buf_offset = offsetof(struct btrfs_ioctl_search_args_v2, buf); 1181 btrfs_print_tree_search(tcp, &args.key, arg + buf_offset, 1182 args.buf_size, true); 1183 if (entering(tcp)) 1184 return 0; 1185 break; 1186 } 1187 1188 case BTRFS_IOC_SEND: { /* W */ 1189 struct_btrfs_ioctl_send_args args; 1190 1191 tprints(", "); 1192 if (umove_or_printaddr(tcp, arg, &args)) 1193 break; 1194 1195 tprints("{send_fd="); 1196 printfd(tcp, args.send_fd); 1197 tprintf(", clone_sources_count=%" PRIu64 ", clone_sources=", 1198 (uint64_t) args.clone_sources_count); 1199 1200 if (abbrev(tcp)) 1201 tprints("..."); 1202 else { 1203 uint64_t record; 1204 print_array(tcp, (unsigned long) args.clone_sources, 1205 args.clone_sources_count, 1206 &record, sizeof(record), 1207 umoven_or_printaddr, 1208 print_objectid_callback, 0); 1209 } 1210 tprints(", parent_root="); 1211 btrfs_print_objectid(args.parent_root); 1212 tprints(", flags="); 1213 printflags64(btrfs_send_flags, args.flags, 1214 "BTRFS_SEND_FLAGS_???"); 1215 tprints("}"); 1216 break; 1217 } 1218 1219 case BTRFS_IOC_SPACE_INFO: { /* RW */ 1220 struct btrfs_ioctl_space_args args; 1221 1222 if (entering(tcp)) 1223 tprints(", "); 1224 else if (syserror(tcp)) 1225 break; 1226 else 1227 tprints(" => "); 1228 1229 if (umove_or_printaddr(tcp, arg, &args)) 1230 break; 1231 1232 tprints("{"); 1233 if (entering(tcp)) { 1234 tprintf("space_slots=%" PRI__u64 "}", args.space_slots); 1235 return 0; 1236 } 1237 1238 tprintf("total_spaces=%" PRI__u64, args.total_spaces); 1239 1240 if (args.space_slots == 0 && args.total_spaces) { 1241 tprints("}"); 1242 break; 1243 } 1244 1245 tprints(", spaces="); 1246 1247 if (abbrev(tcp)) 1248 tprints("..."); 1249 else { 1250 struct btrfs_ioctl_space_info info; 1251 print_array(tcp, arg + offsetof(typeof(args), spaces), 1252 args.total_spaces, 1253 &info, sizeof(info), umoven_or_printaddr, 1254 print_btrfs_ioctl_space_info, 0); 1255 } 1256 tprints("}"); 1257 break; 1258 } 1259 1260 case BTRFS_IOC_SNAP_CREATE: 1261 case BTRFS_IOC_RESIZE: 1262 case BTRFS_IOC_SCAN_DEV: 1263 case BTRFS_IOC_ADD_DEV: 1264 case BTRFS_IOC_RM_DEV: 1265 case BTRFS_IOC_SUBVOL_CREATE: 1266 case BTRFS_IOC_SNAP_DESTROY: 1267 case BTRFS_IOC_DEVICES_READY: { /* W */ 1268 struct btrfs_ioctl_vol_args args; 1269 1270 tprints(", "); 1271 if (umove_or_printaddr(tcp, arg, &args)) 1272 break; 1273 1274 tprints("{fd="); 1275 printfd(tcp, args.fd); 1276 tprints(", name="); 1277 print_quoted_string(args.name, sizeof(args.name), 1278 QUOTE_0_TERMINATED); 1279 tprints("}"); 1280 break; 1281 } 1282 1283 case BTRFS_IOC_SNAP_CREATE_V2: 1284 case BTRFS_IOC_SUBVOL_CREATE_V2: { /* code is W, but is actually RW */ 1285 struct btrfs_ioctl_vol_args_v2 args; 1286 1287 if (entering(tcp)) 1288 tprints(", "); 1289 else if (syserror(tcp)) 1290 break; 1291 else 1292 tprints(" => "); 1293 1294 if (umove_or_printaddr(tcp, arg, &args)) 1295 break; 1296 1297 if (entering(tcp)) { 1298 tprints("{fd="); 1299 printfd(tcp, args.fd); 1300 tprints(", flags="); 1301 printflags64(btrfs_snap_flags_v2, args.flags, 1302 "BTRFS_SUBVOL_???"); 1303 if (args.flags & BTRFS_SUBVOL_QGROUP_INHERIT) { 1304 tprintf(", size=%" PRI__u64 ", qgroup_inherit=", 1305 args.size); 1306 1307 btrfs_print_qgroup_inherit(tcp, 1308 (unsigned long)args.qgroup_inherit); 1309 } 1310 tprintf(", name="); 1311 print_quoted_string(args.name, sizeof(args.name), 1312 QUOTE_0_TERMINATED); 1313 tprints("}"); 1314 return 0; 1315 } 1316 tprintf("{transid=%" PRI__u64 "}", args.transid); 1317 break; 1318 } 1319 1320 case BTRFS_IOC_GET_FSLABEL: /* R */ 1321 if (entering(tcp)) 1322 return 0; 1323 /* fall through */ 1324 case BTRFS_IOC_SET_FSLABEL: { /* W */ 1325 char label[BTRFS_LABEL_SIZE]; 1326 1327 tprints(", "); 1328 if (umove_or_printaddr(tcp, arg, &label)) 1329 break; 1330 print_quoted_string(label, sizeof(label), QUOTE_0_TERMINATED); 1331 break; 1332 } 1333 1334 case BTRFS_IOC_CLONE: /* FICLONE */ 1335 case BTRFS_IOC_CLONE_RANGE: /* FICLONERANGE */ 1336#ifdef BTRFS_IOC_FILE_EXTENT_SAME 1337 case BTRFS_IOC_FILE_EXTENT_SAME: /* FIDEDUPERANGE */ 1338#endif 1339 /* 1340 * FICLONE, FICLONERANGE, and FIDEDUPERANGE started out as 1341 * btrfs ioctls and the code was kept for the generic 1342 * implementations. We use the BTRFS_* names here because 1343 * they will be available on older systems. 1344 */ 1345 return file_ioctl(tcp, code, arg); 1346 1347 default: 1348 return RVAL_DECODED; 1349 }; 1350 return RVAL_DECODED | 1; 1351} 1352#endif /* HAVE_LINUX_BTRFS_H */ 1353