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 .needs_file = 1, 417 .plug = 1, 418 .iopoll = 1, 419 .iopoll_queue = 1, 420 .async_size = sizeof(struct io_async_cmd), 421 .prep = io_uring_cmd_prep, 422 .issue = io_uring_cmd, 423 }, 424 [IORING_OP_SEND_ZC] = { 425 .needs_file = 1, 426 .unbound_nonreg_file = 1, 427 .pollout = 1, 428 .audit_skip = 1, 429 .ioprio = 1, 430 #if defined(CONFIG_NET) 431 .async_size = sizeof(struct io_async_msghdr), 432 .prep = io_send_zc_prep, 433 .issue = io_send_zc, 434 #else 435 .prep = io_eopnotsupp_prep, 436 #endif 437 }, 438 [IORING_OP_SENDMSG_ZC] = { 439 .needs_file = 1, 440 .unbound_nonreg_file = 1, 441 .pollout = 1, 442 .ioprio = 1, 443 #if defined(CONFIG_NET) 444 .async_size = sizeof(struct io_async_msghdr), 445 .prep = io_send_zc_prep, 446 .issue = io_sendmsg_zc, 447 #else 448 .prep = io_eopnotsupp_prep, 449 #endif 450 }, 451 [IORING_OP_READ_MULTISHOT] = { 452 .needs_file = 1, 453 .unbound_nonreg_file = 1, 454 .pollin = 1, 455 .buffer_select = 1, 456 .audit_skip = 1, 457 .async_size = sizeof(struct io_async_rw), 458 .prep = io_read_mshot_prep, 459 .issue = io_read_mshot, 460 }, 461 [IORING_OP_WAITID] = { 462 .async_size = sizeof(struct io_waitid_async), 463 .prep = io_waitid_prep, 464 .issue = io_waitid, 465 }, 466 [IORING_OP_FUTEX_WAIT] = { 467 #if defined(CONFIG_FUTEX) 468 .prep = io_futex_prep, 469 .issue = io_futex_wait, 470 #else 471 .prep = io_eopnotsupp_prep, 472 #endif 473 }, 474 [IORING_OP_FUTEX_WAKE] = { 475 #if defined(CONFIG_FUTEX) 476 .prep = io_futex_prep, 477 .issue = io_futex_wake, 478 #else 479 .prep = io_eopnotsupp_prep, 480 #endif 481 }, 482 [IORING_OP_FUTEX_WAITV] = { 483 #if defined(CONFIG_FUTEX) 484 .prep = io_futexv_prep, 485 .issue = io_futexv_wait, 486 #else 487 .prep = io_eopnotsupp_prep, 488 #endif 489 }, 490 [IORING_OP_FIXED_FD_INSTALL] = { 491 .needs_file = 1, 492 .prep = io_install_fixed_fd_prep, 493 .issue = io_install_fixed_fd, 494 }, 495 [IORING_OP_FTRUNCATE] = { 496 .needs_file = 1, 497 .hash_reg_file = 1, 498 .prep = io_ftruncate_prep, 499 .issue = io_ftruncate, 500 }, 501 [IORING_OP_BIND] = { 502 #if defined(CONFIG_NET) 503 .needs_file = 1, 504 .prep = io_bind_prep, 505 .issue = io_bind, 506 .async_size = sizeof(struct io_async_msghdr), 507 #else 508 .prep = io_eopnotsupp_prep, 509 #endif 510 }, 511 [IORING_OP_LISTEN] = { 512 #if defined(CONFIG_NET) 513 .needs_file = 1, 514 .prep = io_listen_prep, 515 .issue = io_listen, 516 .async_size = sizeof(struct io_async_msghdr), 517 #else 518 .prep = io_eopnotsupp_prep, 519 #endif 520 }, 521 [IORING_OP_RECV_ZC] = { 522 .needs_file = 1, 523 .unbound_nonreg_file = 1, 524 .pollin = 1, 525 .ioprio = 1, 526 #if defined(CONFIG_NET) 527 .prep = io_recvzc_prep, 528 .issue = io_recvzc, 529 #else 530 .prep = io_eopnotsupp_prep, 531 #endif 532 }, 533 [IORING_OP_EPOLL_WAIT] = { 534 .needs_file = 1, 535 .audit_skip = 1, 536 .pollin = 1, 537 #if defined(CONFIG_EPOLL) 538 .prep = io_epoll_wait_prep, 539 .issue = io_epoll_wait, 540 #else 541 .prep = io_eopnotsupp_prep, 542 #endif 543 }, 544 [IORING_OP_READV_FIXED] = { 545 .needs_file = 1, 546 .unbound_nonreg_file = 1, 547 .pollin = 1, 548 .plug = 1, 549 .audit_skip = 1, 550 .ioprio = 1, 551 .iopoll = 1, 552 .iopoll_queue = 1, 553 .vectored = 1, 554 .async_size = sizeof(struct io_async_rw), 555 .prep = io_prep_readv_fixed, 556 .issue = io_read, 557 }, 558 [IORING_OP_WRITEV_FIXED] = { 559 .needs_file = 1, 560 .hash_reg_file = 1, 561 .unbound_nonreg_file = 1, 562 .pollout = 1, 563 .plug = 1, 564 .audit_skip = 1, 565 .ioprio = 1, 566 .iopoll = 1, 567 .iopoll_queue = 1, 568 .vectored = 1, 569 .async_size = sizeof(struct io_async_rw), 570 .prep = io_prep_writev_fixed, 571 .issue = io_write, 572 }, 573 [IORING_OP_PIPE] = { 574 .prep = io_pipe_prep, 575 .issue = io_pipe, 576 }, 577 }; 578 579 const struct io_cold_def io_cold_defs[] = { 580 [IORING_OP_NOP] = { 581 .name = "NOP", 582 }, 583 [IORING_OP_READV] = { 584 .name = "READV", 585 .cleanup = io_readv_writev_cleanup, 586 .fail = io_rw_fail, 587 }, 588 [IORING_OP_WRITEV] = { 589 .name = "WRITEV", 590 .cleanup = io_readv_writev_cleanup, 591 .fail = io_rw_fail, 592 }, 593 [IORING_OP_FSYNC] = { 594 .name = "FSYNC", 595 }, 596 [IORING_OP_READ_FIXED] = { 597 .name = "READ_FIXED", 598 .cleanup = io_readv_writev_cleanup, 599 .fail = io_rw_fail, 600 }, 601 [IORING_OP_WRITE_FIXED] = { 602 .name = "WRITE_FIXED", 603 .cleanup = io_readv_writev_cleanup, 604 .fail = io_rw_fail, 605 }, 606 [IORING_OP_POLL_ADD] = { 607 .name = "POLL_ADD", 608 }, 609 [IORING_OP_POLL_REMOVE] = { 610 .name = "POLL_REMOVE", 611 }, 612 [IORING_OP_SYNC_FILE_RANGE] = { 613 .name = "SYNC_FILE_RANGE", 614 }, 615 [IORING_OP_SENDMSG] = { 616 .name = "SENDMSG", 617 #if defined(CONFIG_NET) 618 .cleanup = io_sendmsg_recvmsg_cleanup, 619 .fail = io_sendrecv_fail, 620 #endif 621 }, 622 [IORING_OP_RECVMSG] = { 623 .name = "RECVMSG", 624 #if defined(CONFIG_NET) 625 .cleanup = io_sendmsg_recvmsg_cleanup, 626 .fail = io_sendrecv_fail, 627 #endif 628 }, 629 [IORING_OP_TIMEOUT] = { 630 .name = "TIMEOUT", 631 }, 632 [IORING_OP_TIMEOUT_REMOVE] = { 633 .name = "TIMEOUT_REMOVE", 634 }, 635 [IORING_OP_ACCEPT] = { 636 .name = "ACCEPT", 637 }, 638 [IORING_OP_ASYNC_CANCEL] = { 639 .name = "ASYNC_CANCEL", 640 }, 641 [IORING_OP_LINK_TIMEOUT] = { 642 .name = "LINK_TIMEOUT", 643 }, 644 [IORING_OP_CONNECT] = { 645 .name = "CONNECT", 646 }, 647 [IORING_OP_FALLOCATE] = { 648 .name = "FALLOCATE", 649 }, 650 [IORING_OP_OPENAT] = { 651 .name = "OPENAT", 652 .cleanup = io_open_cleanup, 653 }, 654 [IORING_OP_CLOSE] = { 655 .name = "CLOSE", 656 }, 657 [IORING_OP_FILES_UPDATE] = { 658 .name = "FILES_UPDATE", 659 }, 660 [IORING_OP_STATX] = { 661 .name = "STATX", 662 .cleanup = io_statx_cleanup, 663 }, 664 [IORING_OP_READ] = { 665 .name = "READ", 666 .cleanup = io_readv_writev_cleanup, 667 .fail = io_rw_fail, 668 }, 669 [IORING_OP_WRITE] = { 670 .name = "WRITE", 671 .cleanup = io_readv_writev_cleanup, 672 .fail = io_rw_fail, 673 }, 674 [IORING_OP_FADVISE] = { 675 .name = "FADVISE", 676 }, 677 [IORING_OP_MADVISE] = { 678 .name = "MADVISE", 679 }, 680 [IORING_OP_SEND] = { 681 .name = "SEND", 682 #if defined(CONFIG_NET) 683 .cleanup = io_sendmsg_recvmsg_cleanup, 684 .fail = io_sendrecv_fail, 685 #endif 686 }, 687 [IORING_OP_RECV] = { 688 .name = "RECV", 689 #if defined(CONFIG_NET) 690 .cleanup = io_sendmsg_recvmsg_cleanup, 691 .fail = io_sendrecv_fail, 692 #endif 693 }, 694 [IORING_OP_OPENAT2] = { 695 .name = "OPENAT2", 696 .cleanup = io_open_cleanup, 697 }, 698 [IORING_OP_EPOLL_CTL] = { 699 .name = "EPOLL", 700 }, 701 [IORING_OP_SPLICE] = { 702 .name = "SPLICE", 703 .cleanup = io_splice_cleanup, 704 }, 705 [IORING_OP_PROVIDE_BUFFERS] = { 706 .name = "PROVIDE_BUFFERS", 707 }, 708 [IORING_OP_REMOVE_BUFFERS] = { 709 .name = "REMOVE_BUFFERS", 710 }, 711 [IORING_OP_TEE] = { 712 .name = "TEE", 713 .cleanup = io_splice_cleanup, 714 }, 715 [IORING_OP_SHUTDOWN] = { 716 .name = "SHUTDOWN", 717 }, 718 [IORING_OP_RENAMEAT] = { 719 .name = "RENAMEAT", 720 .cleanup = io_renameat_cleanup, 721 }, 722 [IORING_OP_UNLINKAT] = { 723 .name = "UNLINKAT", 724 .cleanup = io_unlinkat_cleanup, 725 }, 726 [IORING_OP_MKDIRAT] = { 727 .name = "MKDIRAT", 728 .cleanup = io_mkdirat_cleanup, 729 }, 730 [IORING_OP_SYMLINKAT] = { 731 .name = "SYMLINKAT", 732 .cleanup = io_link_cleanup, 733 }, 734 [IORING_OP_LINKAT] = { 735 .name = "LINKAT", 736 .cleanup = io_link_cleanup, 737 }, 738 [IORING_OP_MSG_RING] = { 739 .name = "MSG_RING", 740 .cleanup = io_msg_ring_cleanup, 741 }, 742 [IORING_OP_FSETXATTR] = { 743 .name = "FSETXATTR", 744 .cleanup = io_xattr_cleanup, 745 }, 746 [IORING_OP_SETXATTR] = { 747 .name = "SETXATTR", 748 .cleanup = io_xattr_cleanup, 749 }, 750 [IORING_OP_FGETXATTR] = { 751 .name = "FGETXATTR", 752 .cleanup = io_xattr_cleanup, 753 }, 754 [IORING_OP_GETXATTR] = { 755 .name = "GETXATTR", 756 .cleanup = io_xattr_cleanup, 757 }, 758 [IORING_OP_SOCKET] = { 759 .name = "SOCKET", 760 }, 761 [IORING_OP_URING_CMD] = { 762 .name = "URING_CMD", 763 .sqe_copy = io_uring_cmd_sqe_copy, 764 .cleanup = io_uring_cmd_cleanup, 765 }, 766 [IORING_OP_SEND_ZC] = { 767 .name = "SEND_ZC", 768 #if defined(CONFIG_NET) 769 .cleanup = io_send_zc_cleanup, 770 .fail = io_sendrecv_fail, 771 #endif 772 }, 773 [IORING_OP_SENDMSG_ZC] = { 774 .name = "SENDMSG_ZC", 775 #if defined(CONFIG_NET) 776 .cleanup = io_send_zc_cleanup, 777 .fail = io_sendrecv_fail, 778 #endif 779 }, 780 [IORING_OP_READ_MULTISHOT] = { 781 .name = "READ_MULTISHOT", 782 .cleanup = io_readv_writev_cleanup, 783 }, 784 [IORING_OP_WAITID] = { 785 .name = "WAITID", 786 }, 787 [IORING_OP_FUTEX_WAIT] = { 788 .name = "FUTEX_WAIT", 789 }, 790 [IORING_OP_FUTEX_WAKE] = { 791 .name = "FUTEX_WAKE", 792 }, 793 [IORING_OP_FUTEX_WAITV] = { 794 .name = "FUTEX_WAITV", 795 }, 796 [IORING_OP_FIXED_FD_INSTALL] = { 797 .name = "FIXED_FD_INSTALL", 798 }, 799 [IORING_OP_FTRUNCATE] = { 800 .name = "FTRUNCATE", 801 }, 802 [IORING_OP_BIND] = { 803 .name = "BIND", 804 }, 805 [IORING_OP_LISTEN] = { 806 .name = "LISTEN", 807 }, 808 [IORING_OP_RECV_ZC] = { 809 .name = "RECV_ZC", 810 }, 811 [IORING_OP_EPOLL_WAIT] = { 812 .name = "EPOLL_WAIT", 813 }, 814 [IORING_OP_READV_FIXED] = { 815 .name = "READV_FIXED", 816 .cleanup = io_readv_writev_cleanup, 817 .fail = io_rw_fail, 818 }, 819 [IORING_OP_WRITEV_FIXED] = { 820 .name = "WRITEV_FIXED", 821 .cleanup = io_readv_writev_cleanup, 822 .fail = io_rw_fail, 823 }, 824 [IORING_OP_PIPE] = { 825 .name = "PIPE", 826 }, 827 }; 828 829 const char *io_uring_get_opcode(u8 opcode) 830 { 831 if (opcode < IORING_OP_LAST) 832 return io_cold_defs[opcode].name; 833 return "INVALID"; 834 } 835 836 bool io_uring_op_supported(u8 opcode) 837 { 838 if (opcode < IORING_OP_LAST && 839 io_issue_defs[opcode].prep != io_eopnotsupp_prep) 840 return true; 841 return false; 842 } 843 844 void __init io_uring_optable_init(void) 845 { 846 int i; 847 848 BUILD_BUG_ON(ARRAY_SIZE(io_cold_defs) != IORING_OP_LAST); 849 BUILD_BUG_ON(ARRAY_SIZE(io_issue_defs) != IORING_OP_LAST); 850 851 for (i = 0; i < ARRAY_SIZE(io_issue_defs); i++) { 852 BUG_ON(!io_issue_defs[i].prep); 853 if (io_issue_defs[i].prep != io_eopnotsupp_prep) 854 BUG_ON(!io_issue_defs[i].issue); 855 WARN_ON_ONCE(!io_cold_defs[i].name); 856 } 857 } 858