1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * io_uring opcode handling table 4 */ 5 #include <linux/kernel.h> 6 #include <linux/errno.h> 7 #include <linux/fs.h> 8 #include <linux/file.h> 9 #include <linux/io_uring.h> 10 #include <linux/io_uring/cmd.h> 11 12 #include "io_uring.h" 13 #include "opdef.h" 14 #include "refs.h" 15 #include "tctx.h" 16 #include "sqpoll.h" 17 #include "fdinfo.h" 18 #include "kbuf.h" 19 #include "rsrc.h" 20 21 #include "xattr.h" 22 #include "nop.h" 23 #include "fs.h" 24 #include "splice.h" 25 #include "sync.h" 26 #include "advise.h" 27 #include "openclose.h" 28 #include "uring_cmd.h" 29 #include "epoll.h" 30 #include "statx.h" 31 #include "net.h" 32 #include "msg_ring.h" 33 #include "timeout.h" 34 #include "poll.h" 35 #include "cancel.h" 36 #include "rw.h" 37 #include "waitid.h" 38 #include "futex.h" 39 #include "truncate.h" 40 #include "zcrx.h" 41 42 static int io_no_issue(struct io_kiocb *req, unsigned int issue_flags) 43 { 44 WARN_ON_ONCE(1); 45 return -ECANCELED; 46 } 47 48 static __maybe_unused int io_eopnotsupp_prep(struct io_kiocb *kiocb, 49 const struct io_uring_sqe *sqe) 50 { 51 return -EOPNOTSUPP; 52 } 53 54 const struct io_issue_def io_issue_defs[] = { 55 [IORING_OP_NOP] = { 56 .audit_skip = 1, 57 .iopoll = 1, 58 .prep = io_nop_prep, 59 .issue = io_nop, 60 }, 61 [IORING_OP_READV] = { 62 .needs_file = 1, 63 .unbound_nonreg_file = 1, 64 .pollin = 1, 65 .buffer_select = 1, 66 .plug = 1, 67 .audit_skip = 1, 68 .ioprio = 1, 69 .iopoll = 1, 70 .iopoll_queue = 1, 71 .vectored = 1, 72 .async_size = sizeof(struct io_async_rw), 73 .prep = io_prep_readv, 74 .issue = io_read, 75 }, 76 [IORING_OP_WRITEV] = { 77 .needs_file = 1, 78 .hash_reg_file = 1, 79 .unbound_nonreg_file = 1, 80 .pollout = 1, 81 .plug = 1, 82 .audit_skip = 1, 83 .ioprio = 1, 84 .iopoll = 1, 85 .iopoll_queue = 1, 86 .vectored = 1, 87 .async_size = sizeof(struct io_async_rw), 88 .prep = io_prep_writev, 89 .issue = io_write, 90 }, 91 [IORING_OP_FSYNC] = { 92 .needs_file = 1, 93 .audit_skip = 1, 94 .prep = io_fsync_prep, 95 .issue = io_fsync, 96 }, 97 [IORING_OP_READ_FIXED] = { 98 .needs_file = 1, 99 .unbound_nonreg_file = 1, 100 .pollin = 1, 101 .plug = 1, 102 .audit_skip = 1, 103 .ioprio = 1, 104 .iopoll = 1, 105 .iopoll_queue = 1, 106 .async_size = sizeof(struct io_async_rw), 107 .prep = io_prep_read_fixed, 108 .issue = io_read_fixed, 109 }, 110 [IORING_OP_WRITE_FIXED] = { 111 .needs_file = 1, 112 .hash_reg_file = 1, 113 .unbound_nonreg_file = 1, 114 .pollout = 1, 115 .plug = 1, 116 .audit_skip = 1, 117 .ioprio = 1, 118 .iopoll = 1, 119 .iopoll_queue = 1, 120 .async_size = sizeof(struct io_async_rw), 121 .prep = io_prep_write_fixed, 122 .issue = io_write_fixed, 123 }, 124 [IORING_OP_POLL_ADD] = { 125 .needs_file = 1, 126 .unbound_nonreg_file = 1, 127 .audit_skip = 1, 128 .prep = io_poll_add_prep, 129 .issue = io_poll_add, 130 }, 131 [IORING_OP_POLL_REMOVE] = { 132 .audit_skip = 1, 133 .prep = io_poll_remove_prep, 134 .issue = io_poll_remove, 135 }, 136 [IORING_OP_SYNC_FILE_RANGE] = { 137 .needs_file = 1, 138 .audit_skip = 1, 139 .prep = io_sfr_prep, 140 .issue = io_sync_file_range, 141 }, 142 [IORING_OP_SENDMSG] = { 143 .needs_file = 1, 144 .unbound_nonreg_file = 1, 145 .pollout = 1, 146 .ioprio = 1, 147 #if defined(CONFIG_NET) 148 .async_size = sizeof(struct io_async_msghdr), 149 .prep = io_sendmsg_prep, 150 .issue = io_sendmsg, 151 #else 152 .prep = io_eopnotsupp_prep, 153 #endif 154 }, 155 [IORING_OP_RECVMSG] = { 156 .needs_file = 1, 157 .unbound_nonreg_file = 1, 158 .pollin = 1, 159 .buffer_select = 1, 160 .ioprio = 1, 161 #if defined(CONFIG_NET) 162 .async_size = sizeof(struct io_async_msghdr), 163 .prep = io_recvmsg_prep, 164 .issue = io_recvmsg, 165 #else 166 .prep = io_eopnotsupp_prep, 167 #endif 168 }, 169 [IORING_OP_TIMEOUT] = { 170 .audit_skip = 1, 171 .async_size = sizeof(struct io_timeout_data), 172 .prep = io_timeout_prep, 173 .issue = io_timeout, 174 }, 175 [IORING_OP_TIMEOUT_REMOVE] = { 176 /* used by timeout updates' prep() */ 177 .audit_skip = 1, 178 .prep = io_timeout_remove_prep, 179 .issue = io_timeout_remove, 180 }, 181 [IORING_OP_ACCEPT] = { 182 .needs_file = 1, 183 .unbound_nonreg_file = 1, 184 .pollin = 1, 185 .poll_exclusive = 1, 186 .ioprio = 1, /* used for flags */ 187 #if defined(CONFIG_NET) 188 .prep = io_accept_prep, 189 .issue = io_accept, 190 #else 191 .prep = io_eopnotsupp_prep, 192 #endif 193 }, 194 [IORING_OP_ASYNC_CANCEL] = { 195 .audit_skip = 1, 196 .prep = io_async_cancel_prep, 197 .issue = io_async_cancel, 198 }, 199 [IORING_OP_LINK_TIMEOUT] = { 200 .audit_skip = 1, 201 .async_size = sizeof(struct io_timeout_data), 202 .prep = io_link_timeout_prep, 203 .issue = io_no_issue, 204 }, 205 [IORING_OP_CONNECT] = { 206 .needs_file = 1, 207 .unbound_nonreg_file = 1, 208 .pollout = 1, 209 #if defined(CONFIG_NET) 210 .async_size = sizeof(struct io_async_msghdr), 211 .prep = io_connect_prep, 212 .issue = io_connect, 213 #else 214 .prep = io_eopnotsupp_prep, 215 #endif 216 }, 217 [IORING_OP_FALLOCATE] = { 218 .needs_file = 1, 219 .hash_reg_file = 1, 220 .prep = io_fallocate_prep, 221 .issue = io_fallocate, 222 }, 223 [IORING_OP_OPENAT] = { 224 .prep = io_openat_prep, 225 .issue = io_openat, 226 }, 227 [IORING_OP_CLOSE] = { 228 .prep = io_close_prep, 229 .issue = io_close, 230 }, 231 [IORING_OP_FILES_UPDATE] = { 232 .audit_skip = 1, 233 .iopoll = 1, 234 .prep = io_files_update_prep, 235 .issue = io_files_update, 236 }, 237 [IORING_OP_STATX] = { 238 .audit_skip = 1, 239 .prep = io_statx_prep, 240 .issue = io_statx, 241 }, 242 [IORING_OP_READ] = { 243 .needs_file = 1, 244 .unbound_nonreg_file = 1, 245 .pollin = 1, 246 .buffer_select = 1, 247 .plug = 1, 248 .audit_skip = 1, 249 .ioprio = 1, 250 .iopoll = 1, 251 .iopoll_queue = 1, 252 .async_size = sizeof(struct io_async_rw), 253 .prep = io_prep_read, 254 .issue = io_read, 255 }, 256 [IORING_OP_WRITE] = { 257 .needs_file = 1, 258 .hash_reg_file = 1, 259 .unbound_nonreg_file = 1, 260 .pollout = 1, 261 .plug = 1, 262 .audit_skip = 1, 263 .ioprio = 1, 264 .iopoll = 1, 265 .iopoll_queue = 1, 266 .async_size = sizeof(struct io_async_rw), 267 .prep = io_prep_write, 268 .issue = io_write, 269 }, 270 [IORING_OP_FADVISE] = { 271 .needs_file = 1, 272 .audit_skip = 1, 273 .prep = io_fadvise_prep, 274 .issue = io_fadvise, 275 }, 276 [IORING_OP_MADVISE] = { 277 .audit_skip = 1, 278 .prep = io_madvise_prep, 279 .issue = io_madvise, 280 }, 281 [IORING_OP_SEND] = { 282 .needs_file = 1, 283 .unbound_nonreg_file = 1, 284 .pollout = 1, 285 .audit_skip = 1, 286 .ioprio = 1, 287 .buffer_select = 1, 288 #if defined(CONFIG_NET) 289 .async_size = sizeof(struct io_async_msghdr), 290 .prep = io_sendmsg_prep, 291 .issue = io_send, 292 #else 293 .prep = io_eopnotsupp_prep, 294 #endif 295 }, 296 [IORING_OP_RECV] = { 297 .needs_file = 1, 298 .unbound_nonreg_file = 1, 299 .pollin = 1, 300 .buffer_select = 1, 301 .audit_skip = 1, 302 .ioprio = 1, 303 #if defined(CONFIG_NET) 304 .async_size = sizeof(struct io_async_msghdr), 305 .prep = io_recvmsg_prep, 306 .issue = io_recv, 307 #else 308 .prep = io_eopnotsupp_prep, 309 #endif 310 }, 311 [IORING_OP_OPENAT2] = { 312 .prep = io_openat2_prep, 313 .issue = io_openat2, 314 }, 315 [IORING_OP_EPOLL_CTL] = { 316 .unbound_nonreg_file = 1, 317 .audit_skip = 1, 318 #if defined(CONFIG_EPOLL) 319 .prep = io_epoll_ctl_prep, 320 .issue = io_epoll_ctl, 321 #else 322 .prep = io_eopnotsupp_prep, 323 #endif 324 }, 325 [IORING_OP_SPLICE] = { 326 .needs_file = 1, 327 .hash_reg_file = 1, 328 .unbound_nonreg_file = 1, 329 .audit_skip = 1, 330 .prep = io_splice_prep, 331 .issue = io_splice, 332 }, 333 [IORING_OP_PROVIDE_BUFFERS] = { 334 .audit_skip = 1, 335 .iopoll = 1, 336 .prep = io_provide_buffers_prep, 337 .issue = io_manage_buffers_legacy, 338 }, 339 [IORING_OP_REMOVE_BUFFERS] = { 340 .audit_skip = 1, 341 .iopoll = 1, 342 .prep = io_remove_buffers_prep, 343 .issue = io_manage_buffers_legacy, 344 }, 345 [IORING_OP_TEE] = { 346 .needs_file = 1, 347 .hash_reg_file = 1, 348 .unbound_nonreg_file = 1, 349 .audit_skip = 1, 350 .prep = io_tee_prep, 351 .issue = io_tee, 352 }, 353 [IORING_OP_SHUTDOWN] = { 354 .needs_file = 1, 355 #if defined(CONFIG_NET) 356 .prep = io_shutdown_prep, 357 .issue = io_shutdown, 358 #else 359 .prep = io_eopnotsupp_prep, 360 #endif 361 }, 362 [IORING_OP_RENAMEAT] = { 363 .prep = io_renameat_prep, 364 .issue = io_renameat, 365 }, 366 [IORING_OP_UNLINKAT] = { 367 .prep = io_unlinkat_prep, 368 .issue = io_unlinkat, 369 }, 370 [IORING_OP_MKDIRAT] = { 371 .prep = io_mkdirat_prep, 372 .issue = io_mkdirat, 373 }, 374 [IORING_OP_SYMLINKAT] = { 375 .prep = io_symlinkat_prep, 376 .issue = io_symlinkat, 377 }, 378 [IORING_OP_LINKAT] = { 379 .prep = io_linkat_prep, 380 .issue = io_linkat, 381 }, 382 [IORING_OP_MSG_RING] = { 383 .needs_file = 1, 384 .iopoll = 1, 385 .prep = io_msg_ring_prep, 386 .issue = io_msg_ring, 387 }, 388 [IORING_OP_FSETXATTR] = { 389 .needs_file = 1, 390 .prep = io_fsetxattr_prep, 391 .issue = io_fsetxattr, 392 }, 393 [IORING_OP_SETXATTR] = { 394 .prep = io_setxattr_prep, 395 .issue = io_setxattr, 396 }, 397 [IORING_OP_FGETXATTR] = { 398 .needs_file = 1, 399 .prep = io_fgetxattr_prep, 400 .issue = io_fgetxattr, 401 }, 402 [IORING_OP_GETXATTR] = { 403 .prep = io_getxattr_prep, 404 .issue = io_getxattr, 405 }, 406 [IORING_OP_SOCKET] = { 407 .audit_skip = 1, 408 #if defined(CONFIG_NET) 409 .prep = io_socket_prep, 410 .issue = io_socket, 411 #else 412 .prep = io_eopnotsupp_prep, 413 #endif 414 }, 415 [IORING_OP_URING_CMD] = { 416 .buffer_select = 1, 417 .needs_file = 1, 418 .plug = 1, 419 .iopoll = 1, 420 .iopoll_queue = 1, 421 .async_size = sizeof(struct io_async_cmd), 422 .prep = io_uring_cmd_prep, 423 .issue = io_uring_cmd, 424 }, 425 [IORING_OP_SEND_ZC] = { 426 .needs_file = 1, 427 .unbound_nonreg_file = 1, 428 .pollout = 1, 429 .audit_skip = 1, 430 .ioprio = 1, 431 #if defined(CONFIG_NET) 432 .async_size = sizeof(struct io_async_msghdr), 433 .prep = io_send_zc_prep, 434 .issue = io_send_zc, 435 #else 436 .prep = io_eopnotsupp_prep, 437 #endif 438 }, 439 [IORING_OP_SENDMSG_ZC] = { 440 .needs_file = 1, 441 .unbound_nonreg_file = 1, 442 .pollout = 1, 443 .ioprio = 1, 444 #if defined(CONFIG_NET) 445 .async_size = sizeof(struct io_async_msghdr), 446 .prep = io_send_zc_prep, 447 .issue = io_sendmsg_zc, 448 #else 449 .prep = io_eopnotsupp_prep, 450 #endif 451 }, 452 [IORING_OP_READ_MULTISHOT] = { 453 .needs_file = 1, 454 .unbound_nonreg_file = 1, 455 .pollin = 1, 456 .buffer_select = 1, 457 .audit_skip = 1, 458 .async_size = sizeof(struct io_async_rw), 459 .prep = io_read_mshot_prep, 460 .issue = io_read_mshot, 461 }, 462 [IORING_OP_WAITID] = { 463 .async_size = sizeof(struct io_waitid_async), 464 .prep = io_waitid_prep, 465 .issue = io_waitid, 466 }, 467 [IORING_OP_FUTEX_WAIT] = { 468 #if defined(CONFIG_FUTEX) 469 .prep = io_futex_prep, 470 .issue = io_futex_wait, 471 #else 472 .prep = io_eopnotsupp_prep, 473 #endif 474 }, 475 [IORING_OP_FUTEX_WAKE] = { 476 #if defined(CONFIG_FUTEX) 477 .prep = io_futex_prep, 478 .issue = io_futex_wake, 479 #else 480 .prep = io_eopnotsupp_prep, 481 #endif 482 }, 483 [IORING_OP_FUTEX_WAITV] = { 484 #if defined(CONFIG_FUTEX) 485 .prep = io_futexv_prep, 486 .issue = io_futexv_wait, 487 #else 488 .prep = io_eopnotsupp_prep, 489 #endif 490 }, 491 [IORING_OP_FIXED_FD_INSTALL] = { 492 .needs_file = 1, 493 .prep = io_install_fixed_fd_prep, 494 .issue = io_install_fixed_fd, 495 }, 496 [IORING_OP_FTRUNCATE] = { 497 .needs_file = 1, 498 .hash_reg_file = 1, 499 .prep = io_ftruncate_prep, 500 .issue = io_ftruncate, 501 }, 502 [IORING_OP_BIND] = { 503 #if defined(CONFIG_NET) 504 .needs_file = 1, 505 .prep = io_bind_prep, 506 .issue = io_bind, 507 .async_size = sizeof(struct io_async_msghdr), 508 #else 509 .prep = io_eopnotsupp_prep, 510 #endif 511 }, 512 [IORING_OP_LISTEN] = { 513 #if defined(CONFIG_NET) 514 .needs_file = 1, 515 .prep = io_listen_prep, 516 .issue = io_listen, 517 .async_size = sizeof(struct io_async_msghdr), 518 #else 519 .prep = io_eopnotsupp_prep, 520 #endif 521 }, 522 [IORING_OP_RECV_ZC] = { 523 .needs_file = 1, 524 .unbound_nonreg_file = 1, 525 .pollin = 1, 526 .ioprio = 1, 527 #if defined(CONFIG_NET) 528 .prep = io_recvzc_prep, 529 .issue = io_recvzc, 530 #else 531 .prep = io_eopnotsupp_prep, 532 #endif 533 }, 534 [IORING_OP_EPOLL_WAIT] = { 535 .needs_file = 1, 536 .audit_skip = 1, 537 .pollin = 1, 538 #if defined(CONFIG_EPOLL) 539 .prep = io_epoll_wait_prep, 540 .issue = io_epoll_wait, 541 #else 542 .prep = io_eopnotsupp_prep, 543 #endif 544 }, 545 [IORING_OP_READV_FIXED] = { 546 .needs_file = 1, 547 .unbound_nonreg_file = 1, 548 .pollin = 1, 549 .plug = 1, 550 .audit_skip = 1, 551 .ioprio = 1, 552 .iopoll = 1, 553 .iopoll_queue = 1, 554 .vectored = 1, 555 .async_size = sizeof(struct io_async_rw), 556 .prep = io_prep_readv_fixed, 557 .issue = io_read, 558 }, 559 [IORING_OP_WRITEV_FIXED] = { 560 .needs_file = 1, 561 .hash_reg_file = 1, 562 .unbound_nonreg_file = 1, 563 .pollout = 1, 564 .plug = 1, 565 .audit_skip = 1, 566 .ioprio = 1, 567 .iopoll = 1, 568 .iopoll_queue = 1, 569 .vectored = 1, 570 .async_size = sizeof(struct io_async_rw), 571 .prep = io_prep_writev_fixed, 572 .issue = io_write, 573 }, 574 [IORING_OP_PIPE] = { 575 .prep = io_pipe_prep, 576 .issue = io_pipe, 577 }, 578 }; 579 580 const struct io_cold_def io_cold_defs[] = { 581 [IORING_OP_NOP] = { 582 .name = "NOP", 583 }, 584 [IORING_OP_READV] = { 585 .name = "READV", 586 .cleanup = io_readv_writev_cleanup, 587 .fail = io_rw_fail, 588 }, 589 [IORING_OP_WRITEV] = { 590 .name = "WRITEV", 591 .cleanup = io_readv_writev_cleanup, 592 .fail = io_rw_fail, 593 }, 594 [IORING_OP_FSYNC] = { 595 .name = "FSYNC", 596 }, 597 [IORING_OP_READ_FIXED] = { 598 .name = "READ_FIXED", 599 .cleanup = io_readv_writev_cleanup, 600 .fail = io_rw_fail, 601 }, 602 [IORING_OP_WRITE_FIXED] = { 603 .name = "WRITE_FIXED", 604 .cleanup = io_readv_writev_cleanup, 605 .fail = io_rw_fail, 606 }, 607 [IORING_OP_POLL_ADD] = { 608 .name = "POLL_ADD", 609 }, 610 [IORING_OP_POLL_REMOVE] = { 611 .name = "POLL_REMOVE", 612 }, 613 [IORING_OP_SYNC_FILE_RANGE] = { 614 .name = "SYNC_FILE_RANGE", 615 }, 616 [IORING_OP_SENDMSG] = { 617 .name = "SENDMSG", 618 #if defined(CONFIG_NET) 619 .cleanup = io_sendmsg_recvmsg_cleanup, 620 .fail = io_sendrecv_fail, 621 #endif 622 }, 623 [IORING_OP_RECVMSG] = { 624 .name = "RECVMSG", 625 #if defined(CONFIG_NET) 626 .cleanup = io_sendmsg_recvmsg_cleanup, 627 .fail = io_sendrecv_fail, 628 #endif 629 }, 630 [IORING_OP_TIMEOUT] = { 631 .name = "TIMEOUT", 632 }, 633 [IORING_OP_TIMEOUT_REMOVE] = { 634 .name = "TIMEOUT_REMOVE", 635 }, 636 [IORING_OP_ACCEPT] = { 637 .name = "ACCEPT", 638 }, 639 [IORING_OP_ASYNC_CANCEL] = { 640 .name = "ASYNC_CANCEL", 641 }, 642 [IORING_OP_LINK_TIMEOUT] = { 643 .name = "LINK_TIMEOUT", 644 }, 645 [IORING_OP_CONNECT] = { 646 .name = "CONNECT", 647 }, 648 [IORING_OP_FALLOCATE] = { 649 .name = "FALLOCATE", 650 }, 651 [IORING_OP_OPENAT] = { 652 .name = "OPENAT", 653 .cleanup = io_open_cleanup, 654 }, 655 [IORING_OP_CLOSE] = { 656 .name = "CLOSE", 657 }, 658 [IORING_OP_FILES_UPDATE] = { 659 .name = "FILES_UPDATE", 660 }, 661 [IORING_OP_STATX] = { 662 .name = "STATX", 663 .cleanup = io_statx_cleanup, 664 }, 665 [IORING_OP_READ] = { 666 .name = "READ", 667 .cleanup = io_readv_writev_cleanup, 668 .fail = io_rw_fail, 669 }, 670 [IORING_OP_WRITE] = { 671 .name = "WRITE", 672 .cleanup = io_readv_writev_cleanup, 673 .fail = io_rw_fail, 674 }, 675 [IORING_OP_FADVISE] = { 676 .name = "FADVISE", 677 }, 678 [IORING_OP_MADVISE] = { 679 .name = "MADVISE", 680 }, 681 [IORING_OP_SEND] = { 682 .name = "SEND", 683 #if defined(CONFIG_NET) 684 .cleanup = io_sendmsg_recvmsg_cleanup, 685 .fail = io_sendrecv_fail, 686 #endif 687 }, 688 [IORING_OP_RECV] = { 689 .name = "RECV", 690 #if defined(CONFIG_NET) 691 .cleanup = io_sendmsg_recvmsg_cleanup, 692 .fail = io_sendrecv_fail, 693 #endif 694 }, 695 [IORING_OP_OPENAT2] = { 696 .name = "OPENAT2", 697 .cleanup = io_open_cleanup, 698 }, 699 [IORING_OP_EPOLL_CTL] = { 700 .name = "EPOLL", 701 }, 702 [IORING_OP_SPLICE] = { 703 .name = "SPLICE", 704 .cleanup = io_splice_cleanup, 705 }, 706 [IORING_OP_PROVIDE_BUFFERS] = { 707 .name = "PROVIDE_BUFFERS", 708 }, 709 [IORING_OP_REMOVE_BUFFERS] = { 710 .name = "REMOVE_BUFFERS", 711 }, 712 [IORING_OP_TEE] = { 713 .name = "TEE", 714 .cleanup = io_splice_cleanup, 715 }, 716 [IORING_OP_SHUTDOWN] = { 717 .name = "SHUTDOWN", 718 }, 719 [IORING_OP_RENAMEAT] = { 720 .name = "RENAMEAT", 721 .cleanup = io_renameat_cleanup, 722 }, 723 [IORING_OP_UNLINKAT] = { 724 .name = "UNLINKAT", 725 .cleanup = io_unlinkat_cleanup, 726 }, 727 [IORING_OP_MKDIRAT] = { 728 .name = "MKDIRAT", 729 .cleanup = io_mkdirat_cleanup, 730 }, 731 [IORING_OP_SYMLINKAT] = { 732 .name = "SYMLINKAT", 733 .cleanup = io_link_cleanup, 734 }, 735 [IORING_OP_LINKAT] = { 736 .name = "LINKAT", 737 .cleanup = io_link_cleanup, 738 }, 739 [IORING_OP_MSG_RING] = { 740 .name = "MSG_RING", 741 .cleanup = io_msg_ring_cleanup, 742 }, 743 [IORING_OP_FSETXATTR] = { 744 .name = "FSETXATTR", 745 .cleanup = io_xattr_cleanup, 746 }, 747 [IORING_OP_SETXATTR] = { 748 .name = "SETXATTR", 749 .cleanup = io_xattr_cleanup, 750 }, 751 [IORING_OP_FGETXATTR] = { 752 .name = "FGETXATTR", 753 .cleanup = io_xattr_cleanup, 754 }, 755 [IORING_OP_GETXATTR] = { 756 .name = "GETXATTR", 757 .cleanup = io_xattr_cleanup, 758 }, 759 [IORING_OP_SOCKET] = { 760 .name = "SOCKET", 761 }, 762 [IORING_OP_URING_CMD] = { 763 .name = "URING_CMD", 764 .sqe_copy = io_uring_cmd_sqe_copy, 765 .cleanup = io_uring_cmd_cleanup, 766 }, 767 [IORING_OP_SEND_ZC] = { 768 .name = "SEND_ZC", 769 #if defined(CONFIG_NET) 770 .cleanup = io_send_zc_cleanup, 771 .fail = io_sendrecv_fail, 772 #endif 773 }, 774 [IORING_OP_SENDMSG_ZC] = { 775 .name = "SENDMSG_ZC", 776 #if defined(CONFIG_NET) 777 .cleanup = io_send_zc_cleanup, 778 .fail = io_sendrecv_fail, 779 #endif 780 }, 781 [IORING_OP_READ_MULTISHOT] = { 782 .name = "READ_MULTISHOT", 783 .cleanup = io_readv_writev_cleanup, 784 }, 785 [IORING_OP_WAITID] = { 786 .name = "WAITID", 787 }, 788 [IORING_OP_FUTEX_WAIT] = { 789 .name = "FUTEX_WAIT", 790 }, 791 [IORING_OP_FUTEX_WAKE] = { 792 .name = "FUTEX_WAKE", 793 }, 794 [IORING_OP_FUTEX_WAITV] = { 795 .name = "FUTEX_WAITV", 796 }, 797 [IORING_OP_FIXED_FD_INSTALL] = { 798 .name = "FIXED_FD_INSTALL", 799 }, 800 [IORING_OP_FTRUNCATE] = { 801 .name = "FTRUNCATE", 802 }, 803 [IORING_OP_BIND] = { 804 .name = "BIND", 805 }, 806 [IORING_OP_LISTEN] = { 807 .name = "LISTEN", 808 }, 809 [IORING_OP_RECV_ZC] = { 810 .name = "RECV_ZC", 811 }, 812 [IORING_OP_EPOLL_WAIT] = { 813 .name = "EPOLL_WAIT", 814 }, 815 [IORING_OP_READV_FIXED] = { 816 .name = "READV_FIXED", 817 .cleanup = io_readv_writev_cleanup, 818 .fail = io_rw_fail, 819 }, 820 [IORING_OP_WRITEV_FIXED] = { 821 .name = "WRITEV_FIXED", 822 .cleanup = io_readv_writev_cleanup, 823 .fail = io_rw_fail, 824 }, 825 [IORING_OP_PIPE] = { 826 .name = "PIPE", 827 }, 828 }; 829 830 const char *io_uring_get_opcode(u8 opcode) 831 { 832 if (opcode < IORING_OP_LAST) 833 return io_cold_defs[opcode].name; 834 return "INVALID"; 835 } 836 837 bool io_uring_op_supported(u8 opcode) 838 { 839 if (opcode < IORING_OP_LAST && 840 io_issue_defs[opcode].prep != io_eopnotsupp_prep) 841 return true; 842 return false; 843 } 844 845 void __init io_uring_optable_init(void) 846 { 847 int i; 848 849 BUILD_BUG_ON(ARRAY_SIZE(io_cold_defs) != IORING_OP_LAST); 850 BUILD_BUG_ON(ARRAY_SIZE(io_issue_defs) != IORING_OP_LAST); 851 852 for (i = 0; i < ARRAY_SIZE(io_issue_defs); i++) { 853 BUG_ON(!io_issue_defs[i].prep); 854 if (io_issue_defs[i].prep != io_eopnotsupp_prep) 855 BUG_ON(!io_issue_defs[i].issue); 856 WARN_ON_ONCE(!io_cold_defs[i].name); 857 } 858 } 859