1 /* 2 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * BSD 3 Clause License 8 * 9 * Copyright (c) 2007, The Storage Networking Industry Association. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * - Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 17 * - Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in 19 * the documentation and/or other materials provided with the 20 * distribution. 21 * 22 * - Neither the name of The Storage Networking Industry Association (SNIA) 23 * nor the names of its contributors may be used to endorse or promote 24 * products derived from this software without specific prior written 25 * permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 28 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 31 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 /* Copyright (c) 2007, The Storage Networking Industry Association. */ 40 /* Copyright (c) 1996, 1997 PDC, Network Appliance. All Rights Reserved */ 41 42 #include <sys/types.h> 43 #include <sys/socket.h> 44 #include <assert.h> 45 #include <ctype.h> 46 #include <errno.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <unistd.h> 50 #include <strings.h> 51 #include <time.h> 52 #include "ndmpd.h" 53 #include <bitmap.h> 54 #include <sys/queue.h> 55 #include <sys/socket.h> 56 #include <netinet/in.h> 57 #include <netinet/tcp.h> 58 #include <arpa/inet.h> 59 #include <sys/socketvar.h> 60 #include <net/if.h> 61 #include <netdb.h> 62 #include <sys/filio.h> 63 #include <sys/mtio.h> 64 #include <sys/scsi/impl/uscsi.h> 65 #include <sys/scsi/scsi.h> 66 #include "tlm.h" 67 68 /* 69 * Mutex to protect Nlp 70 */ 71 mutex_t nlp_mtx; 72 73 /* 74 * Patchable socket buffer sizes in kilobytes. 75 * ssb: send buffer size. 76 * rsb: receive buffer size. 77 */ 78 int ndmp_sbs = 60; 79 int ndmp_rbs = 60; 80 81 82 /* 83 * Force to backup all the intermediate directories leading to an object 84 * to be backed up in 'dump' format backup. 85 */ 86 boolean_t ndmp_dump_path_node = FALSE; 87 88 89 /* 90 * Force to backup all the intermediate directories leading to an object 91 * to be backed up in 'tar' format backup. 92 */ 93 boolean_t ndmp_tar_path_node = FALSE; 94 95 96 /* 97 * Should the 'st_ctime' be ignored during incremental level backup? 98 */ 99 boolean_t ndmp_ignore_ctime = FALSE; 100 101 /* 102 * Should the 'st_lmtime' be included during incremental level backup? 103 */ 104 boolean_t ndmp_include_lmtime = FALSE; 105 106 /* 107 * Force to send the file history node entries along with the file history 108 * dir entries for all directories containing the changed files to the client 109 * for incremental backup. 110 * 111 * Note: This variable is added to support Bakbone Software's Netvault DMA 112 * which expects to get the FH ADD NODES for all upper directories which 113 * contain the changed files in incremental backup along with the FH ADD DIRS. 114 */ 115 boolean_t ndmp_fhinode = FALSE; 116 117 /* 118 * Maximum permitted sequence number in the token-based backup. The 119 * value of this variable can be changed by the administrator and is 120 * saved in the NDMP configuration file. 121 */ 122 static int ndmp_max_tok_seq = NDMP_MAX_TOKSEQ; 123 124 /* 125 * Force backup directories in incremental backups. If the 126 * directory is not modified itself, it's not backed up by 127 * default. 128 */ 129 int ndmp_force_bk_dirs = 0; 130 131 /* 132 * Keeps track of the open SCSI (including tape and robot) devices. 133 * When a SCSI device is opened its name must be added to this list and 134 * when it's closed its name must be removed from this list. The main 135 * purpose of this list is the robot device. If the robot devices are not 136 * attached in SASD layer, Local Backup won't see them. If they are 137 * attached and we open the robot devices, then wrong commands are sent 138 * to robot by SASD since it assumes that the robot is a tape (sequential 139 * access) device. 140 */ 141 struct open_list { 142 LIST_ENTRY(open_list) ol_q; 143 int ol_nref; 144 char *ol_devnm; 145 int ol_sid; 146 int ol_lun; 147 int ol_fd; 148 ndmp_connection_t *cl_conn; 149 }; 150 LIST_HEAD(ol_head, open_list); 151 152 153 /* 154 * Head of the opened SCSI devices list. 155 */ 156 static struct ol_head ol_head; 157 158 mutex_t ol_mutex = DEFAULTMUTEX; 159 160 161 /* 162 * List of things to be exluded from backup. 163 */ 164 static char *exls[] = { 165 EXCL_PROC, 166 EXCL_TMP, 167 NULL, /* reserved for a copy of the "backup.directory" */ 168 NULL 169 }; 170 171 172 /* 173 * The counter for creating unique names with "ndmp.%d" format. 174 */ 175 #define NDMP_RCF_BASENAME "ndmp." 176 static int ndmp_job_cnt = 0; 177 178 static int scsi_test_unit_ready(int dev_id); 179 180 /* 181 * ndmpd_add_file_handler 182 * 183 * Adds a file handler to the file handler list. 184 * The file handler list is used by ndmpd_api_dispatch. 185 * 186 * Parameters: 187 * session (input) - session pointer. 188 * cookie (input) - opaque data to be passed to file hander when called. 189 * fd (input) - file descriptor. 190 * mode (input) - bitmask of the following: 191 * 1 = watch file for ready for reading 192 * 2 = watch file for ready for writing 193 * 4 = watch file for exception 194 * class (input) - handler class. (HC_CLIENT, HC_MOVER, HC_MODULE) 195 * func (input) - function to call when the file meets one of the 196 * conditions specified by mode. 197 * 198 * Returns: 199 * 0 - success. 200 * -1 - error. 201 */ 202 int 203 ndmpd_add_file_handler(ndmpd_session_t *session, void *cookie, int fd, 204 ulong_t mode, ulong_t class, ndmpd_file_handler_func_t *func) 205 { 206 ndmpd_file_handler_t *new; 207 208 new = ndmp_malloc(sizeof (ndmpd_file_handler_t)); 209 if (new == 0) 210 return (-1); 211 212 new->fh_cookie = cookie; 213 new->fh_fd = fd; 214 new->fh_mode = mode; 215 new->fh_class = class; 216 new->fh_func = func; 217 new->fh_next = session->ns_file_handler_list; 218 session->ns_file_handler_list = new; 219 return (0); 220 } 221 222 223 /* 224 * ndmpd_remove_file_handler 225 * 226 * Removes a file handler from the file handler list. 227 * 228 * Parameters: 229 * session (input) - session pointer. 230 * fd (input) - file descriptor. 231 * 232 * Returns: 233 * 0 - success. 234 * -1 - error. 235 */ 236 int 237 ndmpd_remove_file_handler(ndmpd_session_t *session, int fd) 238 { 239 ndmpd_file_handler_t **last; 240 ndmpd_file_handler_t *handler; 241 242 last = &session->ns_file_handler_list; 243 while (*last != 0) { 244 handler = *last; 245 246 if (handler->fh_fd == fd) { 247 *last = handler->fh_next; 248 (void) free(handler); 249 return (1); 250 } 251 last = &handler->fh_next; 252 } 253 254 return (0); 255 } 256 257 258 /* 259 * ndmp_connection_closed 260 * 261 * If the connection closed or not. 262 * 263 * Parameters: 264 * fd (input) : file descriptor 265 * 266 * Returns: 267 * 0 - connection is still valid 268 * 1 - connection is not valid anymore 269 * -1 - Internal kernel error 270 */ 271 int 272 ndmp_connection_closed(int fd) 273 { 274 fd_set fds; 275 int closed, ret; 276 struct timeval timeout; 277 278 if (fd < 0) /* We are not using the mover */ 279 return (-1); 280 281 timeout.tv_sec = 0; 282 timeout.tv_usec = 1000; 283 284 FD_ZERO(&fds); 285 FD_SET(fd, &fds); 286 ret = select(FD_SETSIZE, &fds, NULL, NULL, &timeout); 287 288 closed = (ret == -1 && errno == EBADF); 289 290 return (closed); 291 } 292 293 /* 294 * ndmp_check_mover_state 295 * 296 * Checks the mover connection status and sends an appropriate 297 * NDMP message to client based on that. 298 * 299 * Parameters: 300 * ndmpd_session_t *session (input) : session pointer 301 * 302 * Returns: 303 * void. 304 */ 305 void 306 ndmp_check_mover_state(ndmpd_session_t *session) 307 { 308 int moverfd; 309 /* 310 * NDMPV3 Spec (Three-way restore): 311 * Once all of the files have been recovered, NDMP DATA Server closes 312 * the connection to the mover on the NDMP TAPE Server. THEN 313 * The NDMP client should receive an NDMP_NOTIFY_MOVER_HALTED message 314 * with an NDMP_MOVER_CONNECT_CLOSED reason from the NDMP TAPE Server 315 */ 316 moverfd = session->ns_mover.md_sock; 317 /* If connection is closed by the peer */ 318 if (moverfd >= 0 && 319 session->ns_mover.md_mode == NDMP_MOVER_MODE_WRITE) { 320 int closed, reason; 321 322 closed = ndmp_connection_closed(moverfd); 323 if (closed) { 324 /* Connection closed or internal error */ 325 if (closed > 0) { 326 NDMP_LOG(LOG_DEBUG, 327 "ndmp mover: connection closed by peer"); 328 reason = NDMP_MOVER_HALT_CONNECT_CLOSED; 329 } else { 330 NDMP_LOG(LOG_DEBUG, 331 "ndmp mover: Internal error"); 332 reason = NDMP_MOVER_HALT_INTERNAL_ERROR; 333 } 334 ndmpd_mover_error(session, reason); 335 336 } 337 } 338 } 339 340 341 /* 342 * ndmpd_select 343 * 344 * Calls select on the the set of file descriptors from the 345 * file handler list masked by the fd_class argument. 346 * Calls the file handler function for each 347 * file descriptor that is ready for I/O. 348 * 349 * Parameters: 350 * session (input) - session pointer. 351 * block (input) - if TRUE, ndmpd_select waits until at least one 352 * file descriptor is ready for I/O. Otherwise, 353 * it returns immediately if no file descriptors are 354 * ready for I/O. 355 * class_mask (input) - bit mask of handler classes to be examined. 356 * Provides for excluding some of the handlers from 357 * being called. 358 * 359 * Returns: 360 * -1 - error. 361 * 0 - no handlers were called. 362 * 1 - at least one handler was called. 363 */ 364 int 365 ndmpd_select(ndmpd_session_t *session, boolean_t block, ulong_t class_mask) 366 { 367 fd_set rfds; 368 fd_set wfds; 369 fd_set efds; 370 int n; 371 ndmpd_file_handler_t *handler; 372 struct timeval timeout; 373 374 nlp_event_rv_set(session, 0); 375 376 if (session->ns_file_handler_list == 0) 377 return (0); 378 379 380 /* 381 * If select should be blocked, then we poll every ten seconds. 382 * The reason is in case of three-way restore we should be able 383 * to detect if the other end closed the connection or not. 384 * NDMP client(DMA) does not send any information about the connection 385 * that was closed in the other end. 386 */ 387 388 if (block == TRUE) 389 timeout.tv_sec = 10; 390 else 391 timeout.tv_sec = 0; 392 timeout.tv_usec = 0; 393 394 do { 395 /* Create the fd_sets for select. */ 396 FD_ZERO(&rfds); 397 FD_ZERO(&wfds); 398 FD_ZERO(&efds); 399 400 for (handler = session->ns_file_handler_list; handler != 0; 401 handler = handler->fh_next) { 402 if ((handler->fh_class & class_mask) == 0) 403 continue; 404 405 if (handler->fh_mode & NDMPD_SELECT_MODE_READ) 406 FD_SET(handler->fh_fd, &rfds); 407 if (handler->fh_mode & NDMPD_SELECT_MODE_WRITE) 408 FD_SET(handler->fh_fd, &wfds); 409 if (handler->fh_mode & NDMPD_SELECT_MODE_EXCEPTION) 410 FD_SET(handler->fh_fd, &efds); 411 } 412 ndmp_check_mover_state(session); 413 n = select(FD_SETSIZE, &rfds, &wfds, &efds, &timeout); 414 } while (n == 0 && block == TRUE); 415 416 if (n < 0) { 417 int connection_fd = ndmp_get_fd(session->ns_connection); 418 419 if (errno == EINTR) 420 return (0); 421 422 NDMP_LOG(LOG_DEBUG, "Select error: %m"); 423 424 for (handler = session->ns_file_handler_list; handler != 0; 425 handler = handler->fh_next) { 426 if ((handler->fh_class & class_mask) == 0) 427 continue; 428 429 if (handler->fh_mode & NDMPD_SELECT_MODE_READ) { 430 if (FD_ISSET(handler->fh_fd, &rfds) && 431 connection_fd == handler->fh_fd) 432 session->ns_eof = TRUE; 433 } 434 if (handler->fh_mode & NDMPD_SELECT_MODE_WRITE) { 435 if (FD_ISSET(handler->fh_fd, &wfds) && 436 connection_fd == handler->fh_fd) 437 session->ns_eof = TRUE; 438 } 439 if (handler->fh_mode & NDMPD_SELECT_MODE_EXCEPTION) { 440 if (FD_ISSET(handler->fh_fd, &efds) && 441 connection_fd == handler->fh_fd) 442 session->ns_eof = TRUE; 443 } 444 } 445 446 nlp_event_rv_set(session, -1); 447 return (-1); 448 } 449 if (n == 0) 450 return (0); 451 452 handler = session->ns_file_handler_list; 453 while (handler != 0) { 454 ulong_t mode = 0; 455 456 if ((handler->fh_class & class_mask) == 0) { 457 handler = handler->fh_next; 458 continue; 459 } 460 if (handler->fh_mode & NDMPD_SELECT_MODE_READ) { 461 if (FD_ISSET(handler->fh_fd, &rfds)) { 462 mode |= NDMPD_SELECT_MODE_READ; 463 FD_CLR(handler->fh_fd, &rfds); 464 } 465 } 466 if (handler->fh_mode & NDMPD_SELECT_MODE_WRITE) { 467 if (FD_ISSET(handler->fh_fd, &wfds)) { 468 mode |= NDMPD_SELECT_MODE_WRITE; 469 FD_CLR(handler->fh_fd, &wfds); 470 } 471 } 472 if (handler->fh_mode & NDMPD_SELECT_MODE_EXCEPTION) { 473 if (FD_ISSET(handler->fh_fd, &efds)) { 474 mode |= NDMPD_SELECT_MODE_EXCEPTION; 475 FD_CLR(handler->fh_fd, &efds); 476 } 477 } 478 if (mode) { 479 (*handler->fh_func) (handler->fh_cookie, 480 handler->fh_fd, mode); 481 482 /* 483 * K.L. The list can be modified during the execution 484 * of handler->fh_func. Therefore, handler will start 485 * from the beginning of the handler list after 486 * each execution. 487 */ 488 handler = session->ns_file_handler_list; 489 490 /* 491 * Release the thread which is waiting for a request 492 * to be proccessed. 493 */ 494 nlp_event_nw(session); 495 } else 496 handler = handler->fh_next; 497 498 } 499 500 nlp_event_rv_set(session, 1); 501 return (1); 502 } 503 504 505 /* 506 * ndmpd_save_env 507 * 508 * Saves a copy of the environment variable list from the data_start_backup 509 * request or data_start_recover request. 510 * 511 * Parameters: 512 * session (input) - session pointer. 513 * env (input) - environment variable list to be saved. 514 * envlen (input) - length of variable array. 515 * 516 * Returns: 517 * error code. 518 */ 519 ndmp_error 520 ndmpd_save_env(ndmpd_session_t *session, ndmp_pval *env, ulong_t envlen) 521 { 522 ulong_t i; 523 char *namebuf; 524 char *valbuf; 525 526 session->ns_data.dd_env_len = 0; 527 528 if (envlen == 0) 529 return (NDMP_NO_ERR); 530 531 session->ns_data.dd_env = ndmp_malloc(sizeof (ndmp_pval) * envlen); 532 if (session->ns_data.dd_env == 0) 533 return (NDMP_NO_MEM_ERR); 534 535 for (i = 0; i < envlen; i++) { 536 namebuf = strdup(env[i].name); 537 if (namebuf == 0) 538 return (NDMP_NO_MEM_ERR); 539 540 valbuf = strdup(env[i].value); 541 if (valbuf == 0) { 542 free(namebuf); 543 return (NDMP_NO_MEM_ERR); 544 } 545 546 NDMP_LOG(LOG_DEBUG, "env(%s): \"%s\"", 547 namebuf, valbuf); 548 549 (void) mutex_lock(&session->ns_lock); 550 session->ns_data.dd_env[i].name = namebuf; 551 session->ns_data.dd_env[i].value = valbuf; 552 session->ns_data.dd_env_len++; 553 (void) mutex_unlock(&session->ns_lock); 554 } 555 556 return (NDMP_NO_ERR); 557 } 558 559 560 /* 561 * ndmpd_free_env 562 * 563 * Free the previously saved environment variable array. 564 * 565 * Parameters: 566 * session - NDMP session pointer. 567 * 568 * Returns: 569 * void. 570 */ 571 void 572 ndmpd_free_env(ndmpd_session_t *session) 573 { 574 ulong_t i; 575 int count = session->ns_data.dd_env_len; 576 577 (void) mutex_lock(&session->ns_lock); 578 session->ns_data.dd_env_len = 0; 579 for (i = 0; i < count; i++) { 580 free(session->ns_data.dd_env[i].name); 581 free(session->ns_data.dd_env[i].value); 582 } 583 584 free((char *)session->ns_data.dd_env); 585 session->ns_data.dd_env = 0; 586 (void) mutex_unlock(&session->ns_lock); 587 } 588 589 590 /* 591 * ndmpd_save_nlist_v2 592 * 593 * Save a copy of list of file names to be restored. 594 * 595 * Parameters: 596 * nlist (input) - name list from data_start_recover request. 597 * nlistlen (input) - length of name list. 598 * 599 * Returns: 600 * array of file name pointers. 601 * 602 * Notes: 603 * free_nlist should be called to free the returned list. 604 * A null pointer indicates the end of the list. 605 */ 606 ndmp_error 607 ndmpd_save_nlist_v2(ndmpd_session_t *session, ndmp_name *nlist, 608 ulong_t nlistlen) 609 { 610 ulong_t i; 611 char *namebuf; 612 char *destbuf; 613 614 if (nlistlen == 0) 615 return (NDMP_NO_ERR); 616 617 session->ns_data.dd_nlist_len = 0; 618 session->ns_data.dd_nlist = ndmp_malloc(sizeof (ndmp_name)*nlistlen); 619 if (session->ns_data.dd_nlist == 0) 620 return (NDMP_NO_MEM_ERR); 621 622 for (i = 0; i < nlistlen; i++) { 623 namebuf = ndmp_malloc(strlen(nlist[i].name) + 1); 624 if (namebuf == 0) 625 return (NDMP_NO_MEM_ERR); 626 627 destbuf = ndmp_malloc(strlen(nlist[i].dest) + 1); 628 if (destbuf == 0) { 629 free(namebuf); 630 return (NDMP_NO_MEM_ERR); 631 } 632 (void) strlcpy(namebuf, nlist[i].name, 633 strlen(nlist[i].name) + 1); 634 (void) strlcpy(destbuf, nlist[i].dest, 635 strlen(nlist[i].dest) + 1); 636 637 session->ns_data.dd_nlist[i].name = namebuf; 638 session->ns_data.dd_nlist[i].dest = destbuf; 639 session->ns_data.dd_nlist[i].ssid = nlist[i].ssid; 640 session->ns_data.dd_nlist[i].fh_info = nlist[i].fh_info; 641 session->ns_data.dd_nlist_len++; 642 } 643 644 return (NDMP_NO_ERR); 645 } 646 647 648 /* 649 * ndmpd_free_nlist_v2 650 * 651 * Free a list created by ndmpd_save_nlist_v2. 652 * 653 * Parameters: 654 * session (input) - session pointer. 655 * 656 * Returns: 657 * void 658 */ 659 void 660 ndmpd_free_nlist_v2(ndmpd_session_t *session) 661 { 662 ulong_t i; 663 664 for (i = 0; i < session->ns_data.dd_nlist_len; i++) { 665 free(session->ns_data.dd_nlist[i].name); 666 free(session->ns_data.dd_nlist[i].dest); 667 } 668 669 if (session->ns_data.dd_nlist != NULL) 670 free((char *)session->ns_data.dd_nlist); 671 session->ns_data.dd_nlist = 0; 672 session->ns_data.dd_nlist_len = 0; 673 } 674 675 676 /* 677 * ndmpd_free_nlist_v3 678 * 679 * Free a list created by ndmpd_save_nlist_v3. 680 * 681 * Parameters: 682 * session (input) - session pointer. 683 * 684 * Returns: 685 * void 686 */ 687 void 688 ndmpd_free_nlist_v3(ndmpd_session_t *session) 689 { 690 ulong_t i; 691 mem_ndmp_name_v3_t *tp; /* destination entry */ 692 693 tp = session->ns_data.dd_nlist_v3; 694 for (i = 0; i < session->ns_data.dd_nlist_len; tp++, i++) { 695 NDMP_FREE(tp->nm3_opath); 696 NDMP_FREE(tp->nm3_dpath); 697 NDMP_FREE(tp->nm3_newnm); 698 } 699 700 NDMP_FREE(session->ns_data.dd_nlist_v3); 701 session->ns_data.dd_nlist_len = 0; 702 } 703 704 705 /* 706 * ndmpd_save_nlist_v3 707 * 708 * Save a copy of list of file names to be restored. 709 * 710 * Parameters: 711 * nlist (input) - name list from data_start_recover request. 712 * nlistlen (input) - length of name list. 713 * 714 * Returns: 715 * array of file name pointers. 716 * 717 * Notes: 718 * free_nlist should be called to free the returned list. 719 * A null pointer indicates the end of the list. 720 */ 721 ndmp_error 722 ndmpd_save_nlist_v3(ndmpd_session_t *session, ndmp_name_v3 *nlist, 723 ulong_t nlistlen) 724 { 725 ulong_t i; 726 ndmp_error rv; 727 ndmp_name_v3 *sp; /* source entry */ 728 mem_ndmp_name_v3_t *tp; /* destination entry */ 729 730 if (nlistlen == 0) 731 return (NDMP_ILLEGAL_ARGS_ERR); 732 733 session->ns_data.dd_nlist_len = 0; 734 tp = session->ns_data.dd_nlist_v3 = 735 ndmp_malloc(sizeof (mem_ndmp_name_v3_t) * nlistlen); 736 if (session->ns_data.dd_nlist_v3 == 0) 737 return (NDMP_NO_MEM_ERR); 738 739 rv = NDMP_NO_ERR; 740 sp = nlist; 741 for (i = 0; i < nlistlen; tp++, sp++, i++) { 742 tp->nm3_opath = strdup(sp->original_path); 743 if (!tp->nm3_opath) { 744 rv = NDMP_NO_MEM_ERR; 745 break; 746 } 747 if (!*sp->destination_dir) { 748 tp->nm3_dpath = NULL; 749 /* In V4 destination dir cannot be NULL */ 750 if (session->ns_protocol_version == NDMPV4) { 751 rv = NDMP_ILLEGAL_ARGS_ERR; 752 break; 753 } 754 } else if (!(tp->nm3_dpath = strdup(sp->destination_dir))) { 755 rv = NDMP_NO_MEM_ERR; 756 break; 757 } 758 if (!*sp->new_name) 759 tp->nm3_newnm = NULL; 760 else if (!(tp->nm3_newnm = strdup(sp->new_name))) { 761 rv = NDMP_NO_MEM_ERR; 762 break; 763 } 764 765 tp->nm3_node = quad_to_long_long(sp->node); 766 tp->nm3_fh_info = quad_to_long_long(sp->fh_info); 767 tp->nm3_err = NDMP_NO_ERR; 768 session->ns_data.dd_nlist_len++; 769 770 NDMP_LOG(LOG_DEBUG, "orig \"%s\"", tp->nm3_opath); 771 NDMP_LOG(LOG_DEBUG, "dest \"%s\"", NDMP_SVAL(tp->nm3_dpath)); 772 NDMP_LOG(LOG_DEBUG, "name \"%s\"", NDMP_SVAL(tp->nm3_newnm)); 773 NDMP_LOG(LOG_DEBUG, "node %lld", tp->nm3_node); 774 NDMP_LOG(LOG_DEBUG, "fh_info %lld", tp->nm3_fh_info); 775 } 776 777 if (rv != NDMP_NO_ERR) 778 ndmpd_free_nlist_v3(session); 779 780 return (rv); 781 } 782 783 784 /* 785 * ndmpd_free_nlist 786 * 787 * Free the recovery list based on the version 788 * 789 * Parameters: 790 * session (input) - session pointer. 791 * 792 * Returns: 793 * void 794 */ 795 void 796 ndmpd_free_nlist(ndmpd_session_t *session) 797 { 798 switch (session->ns_protocol_version) { 799 case 1: 800 case 2: 801 ndmpd_free_nlist_v2(session); 802 break; 803 case 3: 804 case 4: 805 ndmpd_free_nlist_v3(session); 806 break; 807 808 default: 809 NDMP_LOG(LOG_DEBUG, "Unknown version %d", 810 session->ns_protocol_version); 811 } 812 } 813 814 815 /* 816 * fh_cmpv3 817 * 818 * Comparison function used in sorting the Nlist based on their 819 * file history info (offset of the entry on the tape) 820 * 821 * Parameters: 822 * p (input) - pointer to P 823 * q (input) - pointer to Q 824 * 825 * Returns: 826 * -1: P < Q 827 * 0: P = Q 828 * 1: P > Q 829 */ 830 static int 831 fh_cmpv3(const void *p, 832 const void *q) 833 { 834 #define FH_INFOV3(p) (((mem_ndmp_name_v3_t *)p)->nm3_fh_info) 835 836 if (FH_INFOV3(p) < FH_INFOV3(q)) 837 return (-1); 838 else if (FH_INFOV3(p) == FH_INFOV3(q)) 839 return (0); 840 else 841 return (1); 842 843 #undef FH_INFOV3 844 } 845 846 847 /* 848 * ndmp_sort_nlist_v3 849 * 850 * Sort the recovery list based on their offset on the tape 851 * 852 * Parameters: 853 * session (input) - session pointer. 854 * 855 * Returns: 856 * void 857 */ 858 void 859 ndmp_sort_nlist_v3(ndmpd_session_t *session) 860 { 861 if (!session || session->ns_data.dd_nlist_len == 0 || 862 !session->ns_data.dd_nlist_v3) 863 return; 864 865 (void) qsort(session->ns_data.dd_nlist_v3, 866 session->ns_data.dd_nlist_len, 867 sizeof (mem_ndmp_name_v3_t), fh_cmpv3); 868 } 869 870 871 /* 872 * ndmp_send_reply 873 * 874 * Send the reply, check for error and print the msg if any error 875 * occured when sending the reply. 876 * 877 * Parameters: 878 * connection (input) - connection pointer. 879 * 880 * Return: 881 * void 882 */ 883 void 884 ndmp_send_reply(ndmp_connection_t *connection, void *reply, char *msg) 885 { 886 if (ndmp_send_response(connection, NDMP_NO_ERR, reply) < 0) 887 NDMP_LOG(LOG_DEBUG, "%s", msg); 888 } 889 890 891 /* 892 * ndmp_mtioctl 893 * 894 * Performs numerous filemark operations. 895 * 896 * Parameters: 897 * fd - file descriptor of the device 898 * cmd - filemark or record command 899 * count - the number of operations to be performed 900 */ 901 int 902 ndmp_mtioctl(int fd, int cmd, int count) 903 { 904 struct mtop mp; 905 906 mp.mt_op = cmd; 907 mp.mt_count = count; 908 if (ioctl(fd, MTIOCTOP, &mp) < 0) { 909 NDMP_LOG(LOG_ERR, "Failed to send command to tape: %m."); 910 return (-1); 911 } 912 913 return (0); 914 } 915 916 917 /* 918 * quad_to_long_long 919 * 920 * Convert type quad to longlong_t 921 */ 922 u_longlong_t 923 quad_to_long_long(ndmp_u_quad q) 924 { 925 u_longlong_t ull; 926 927 ull = ((u_longlong_t)q.high << 32) + q.low; 928 return (ull); 929 } 930 931 932 /* 933 * long_long_to_quad 934 * 935 * Convert long long to quad type 936 */ 937 ndmp_u_quad 938 long_long_to_quad(u_longlong_t ull) 939 { 940 ndmp_u_quad q; 941 942 q.high = (ulong_t)(ull >> 32); 943 q.low = (ulong_t)ull; 944 return (q); 945 } 946 947 948 /* 949 * ndmp_set_socket_nodelay 950 * 951 * Set the TCP socket option to nodelay mode 952 */ 953 void 954 ndmp_set_socket_nodelay(int sock) 955 { 956 int flag = 1; 957 958 (void) setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, &flag, sizeof (flag)); 959 } 960 961 962 /* 963 * ndmp_set_socket_snd_buf 964 * 965 * Set the socket send buffer size 966 */ 967 void 968 ndmp_set_socket_snd_buf(int sock, int size) 969 { 970 if (setsockopt(sock, SOL_SOCKET, SO_SNDBUF, &size, sizeof (size)) < 0) 971 NDMP_LOG(LOG_DEBUG, "SO_SNDBUF failed errno=%d", errno); 972 } 973 974 975 /* 976 * ndmp_set_socket_rcv_buf 977 * 978 * Set the socket receive buffer size 979 */ 980 void 981 ndmp_set_socket_rcv_buf(int sock, int size) 982 { 983 if (setsockopt(sock, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size)) < 0) 984 NDMP_LOG(LOG_DEBUG, "SO_RCVBUF failed errno=%d", errno); 985 } 986 987 /* 988 * ndmp_get_max_tok_seq 989 * 990 * Get the maximum permitted token sequence for token-based 991 * backups. 992 * 993 * Parameters: 994 * void 995 * 996 * Returns: 997 * ndmp_max_tok_seq 998 */ 999 int 1000 ndmp_get_max_tok_seq(void) 1001 { 1002 return (ndmp_max_tok_seq); 1003 } 1004 1005 /* 1006 * ndmp_buffer_get_size 1007 * 1008 * Return the NDMP transfer buffer size 1009 * 1010 * Parameters: 1011 * session (input) - session pointer. 1012 * 1013 * Returns: 1014 * buffer size 1015 */ 1016 long 1017 ndmp_buffer_get_size(ndmpd_session_t *session) 1018 { 1019 long xfer_size; 1020 1021 if (session == NULL) 1022 return (0); 1023 1024 if (session->ns_data.dd_mover.addr_type == NDMP_ADDR_TCP) { 1025 xfer_size = atoi(ndmpd_get_prop_default(NDMP_MOVER_RECSIZE, 1026 "60")); 1027 if (xfer_size > 0) 1028 xfer_size *= KILOBYTE; 1029 else 1030 xfer_size = REMOTE_RECORD_SIZE; 1031 NDMP_LOG(LOG_DEBUG, "Remote operation: %d", xfer_size); 1032 } else { 1033 NDMP_LOG(LOG_DEBUG, 1034 "Local operation: %lu", session->ns_mover.md_record_size); 1035 if ((xfer_size = session->ns_mover.md_record_size) == 0) 1036 xfer_size = MAX_RECORD_SIZE; 1037 } 1038 1039 NDMP_LOG(LOG_DEBUG, "xfer_size: %d", xfer_size); 1040 return (xfer_size); 1041 } 1042 1043 1044 /* 1045 * ndmp_lbr_init 1046 * 1047 * Initialize the LBR/NDMP backup parameters 1048 * 1049 * Parameters: 1050 * session (input) - session pointer. 1051 * 1052 * Returns: 1053 * 0: on success 1054 * -1: otherwise 1055 */ 1056 int 1057 ndmp_lbr_init(ndmpd_session_t *session) 1058 { 1059 if (session->ns_ndmp_lbr_params != NULL) { 1060 NDMP_LOG(LOG_DEBUG, "ndmp_lbr_params already allocated."); 1061 return (0); 1062 } 1063 1064 session->ns_ndmp_lbr_params = ndmp_malloc(sizeof (ndmp_lbr_params_t)); 1065 if (session->ns_ndmp_lbr_params == NULL) 1066 return (-1); 1067 1068 session->ns_ndmp_lbr_params->nlp_bkmap = -1; 1069 session->ns_ndmp_lbr_params->nlp_session = session; 1070 (void) cond_init(&session->ns_ndmp_lbr_params->nlp_cv, 0, NULL); 1071 (void) mutex_init(&session->ns_lock, 0, NULL); 1072 session->ns_nref = 0; 1073 return (0); 1074 } 1075 1076 1077 /* 1078 * ndmp_lbr_cleanup 1079 * 1080 * Deallocate and cleanup all NDMP/LBR parameters 1081 * 1082 * Parameters: 1083 * session (input) - session pointer. 1084 * 1085 * Returns: 1086 * 0: on success 1087 * -1: otherwise 1088 */ 1089 void 1090 ndmp_lbr_cleanup(ndmpd_session_t *session) 1091 { 1092 /* 1093 * If in 3-way restore, the connection close is detected after 1094 * check in tape_read(), the reader thread of mover may wait forever 1095 * for the tape to be changed. Force the reader thread to exit. 1096 */ 1097 nlp_event_rv_set(session, -2); 1098 nlp_event_nw(session); 1099 1100 ndmpd_abort_marking_v2(session); 1101 ndmp_stop_buffer_worker(session); 1102 ndmp_waitfor_op(session); 1103 ndmp_free_reader_writer_ipc(session); 1104 if (session->ns_ndmp_lbr_params) { 1105 if (session->ns_ndmp_lbr_params->nlp_bkmap != -1) 1106 (void) dbm_free(session->ns_ndmp_lbr_params->nlp_bkmap); 1107 tlm_release_list(session->ns_ndmp_lbr_params->nlp_exl); 1108 tlm_release_list(session->ns_ndmp_lbr_params->nlp_inc); 1109 (void) cond_destroy(&session->ns_ndmp_lbr_params->nlp_cv); 1110 } 1111 1112 NDMP_FREE(session->ns_ndmp_lbr_params); 1113 } 1114 1115 1116 /* 1117 * nlp_ref_nw 1118 * 1119 * Increase the references to the NDMP/LBR parameter to prevent 1120 * unwanted release 1121 * 1122 * Parameters: 1123 * session (input) - session pointer. 1124 * 1125 * Returns: 1126 * void 1127 */ 1128 void 1129 nlp_ref_nw(ndmpd_session_t *session) 1130 { 1131 ndmp_lbr_params_t *nlp; 1132 1133 (void) mutex_lock(&nlp_mtx); 1134 if ((nlp = ndmp_get_nlp(session)) != NULL) { 1135 nlp->nlp_nw++; 1136 NDMP_LOG(LOG_DEBUG, "nw: %d", nlp->nlp_nw); 1137 } else 1138 NDMP_LOG(LOG_DEBUG, "nlp == NULL"); 1139 (void) mutex_unlock(&nlp_mtx); 1140 } 1141 1142 1143 /* 1144 * nlp_unref_nw 1145 * 1146 * Decrease the references to the NDMP/LBR parameter before 1147 * release 1148 * 1149 * Parameters: 1150 * session (input) - session pointer. 1151 * 1152 * Returns: 1153 * void 1154 */ 1155 void 1156 nlp_unref_nw(ndmpd_session_t *session) 1157 { 1158 ndmp_lbr_params_t *nlp; 1159 1160 (void) mutex_lock(&nlp_mtx); 1161 if ((nlp = ndmp_get_nlp(session)) != NULL) { 1162 NDMP_LOG(LOG_DEBUG, "nw: %d", nlp->nlp_nw); 1163 if (nlp->nlp_nw > 0) 1164 nlp->nlp_nw--; 1165 } else 1166 NDMP_LOG(LOG_DEBUG, "nlp == NULL"); 1167 (void) mutex_unlock(&nlp_mtx); 1168 } 1169 1170 1171 /* 1172 * nlp_wait_nw 1173 * 1174 * Wait for a NDMP/LBR parameter to get available 1175 * 1176 * Parameters: 1177 * session (input) - session pointer. 1178 * 1179 * Returns: 1180 * void 1181 */ 1182 void 1183 nlp_wait_nw(ndmpd_session_t *session) 1184 { 1185 ndmp_lbr_params_t *nlp; 1186 1187 (void) mutex_lock(&nlp_mtx); 1188 if ((nlp = ndmp_get_nlp(session)) != NULL) { 1189 NDMP_LOG(LOG_DEBUG, "nw: %d", nlp->nlp_nw); 1190 if (nlp->nlp_nw > 0) { 1191 NDMP_LOG(LOG_DEBUG, "Waiting"); 1192 while ((nlp->nlp_flag & NLP_READY) == 0) 1193 (void) cond_wait(&nlp->nlp_cv, &nlp_mtx); 1194 } 1195 } else 1196 NDMP_LOG(LOG_DEBUG, "nlp == NULL"); 1197 (void) mutex_unlock(&nlp_mtx); 1198 } 1199 1200 1201 /* 1202 * nlp_event_nw 1203 * 1204 * Signal that a NDMP/LBR parameter is available to wake up the 1205 * threads waiting on that 1206 * 1207 * Parameters: 1208 * session (input) - session pointer. 1209 * 1210 * Returns: 1211 * void 1212 */ 1213 void 1214 nlp_event_nw(ndmpd_session_t *session) 1215 { 1216 ndmp_lbr_params_t *nlp; 1217 1218 (void) mutex_lock(&nlp_mtx); 1219 if ((nlp = ndmp_get_nlp(session)) != NULL) { 1220 if (nlp->nlp_nw > 0) { 1221 NDMP_LOG(LOG_DEBUG, "nw: %d", nlp->nlp_nw); 1222 nlp->nlp_flag |= NLP_READY; 1223 (void) cond_signal(&nlp->nlp_cv); 1224 } 1225 } else 1226 NDMP_LOG(LOG_DEBUG, "nlp == NULL"); 1227 (void) mutex_unlock(&nlp_mtx); 1228 } 1229 1230 1231 /* 1232 * nlp_event_rv_get 1233 * 1234 * Get the return value for each NLP 1235 * 1236 * Parameters: 1237 * session (input) - session pointer. 1238 * 1239 * Returns: 1240 * return value 1241 */ 1242 int 1243 nlp_event_rv_get(ndmpd_session_t *session) 1244 { 1245 ndmp_lbr_params_t *nlp; 1246 1247 if ((nlp = ndmp_get_nlp(session)) == NULL) { 1248 NDMP_LOG(LOG_DEBUG, "nlp == NULL"); 1249 return (0); 1250 } 1251 1252 return (nlp->nlp_rv); 1253 } 1254 1255 1256 /* 1257 * nlp_event_rv_set 1258 * 1259 * Set the return value for an NLP 1260 * 1261 * Parameters: 1262 * session (input) - session pointer. 1263 * rv (input) - return value 1264 * 1265 * Returns: 1266 * void 1267 */ 1268 void 1269 nlp_event_rv_set(ndmpd_session_t *session, 1270 int rv) 1271 { 1272 ndmp_lbr_params_t *nlp; 1273 1274 (void) mutex_lock(&nlp_mtx); 1275 if (rv != 0) 1276 NDMP_LOG(LOG_DEBUG, "rv: %d", rv); 1277 1278 if ((nlp = ndmp_get_nlp(session)) != NULL) 1279 nlp->nlp_rv = rv; 1280 else 1281 NDMP_LOG(LOG_DEBUG, "nlp == NULL"); 1282 (void) mutex_unlock(&nlp_mtx); 1283 } 1284 1285 /* 1286 * is_buffer_erroneous 1287 * 1288 * Run a sanity check on the buffer 1289 * 1290 * returns: 1291 * TRUE: if the buffer seems to have error 1292 * FALSE: if the buffer is full and has valid data. 1293 */ 1294 boolean_t 1295 is_buffer_erroneous(tlm_buffer_t *buf) 1296 { 1297 boolean_t rv; 1298 1299 rv = (buf == NULL || buf->tb_eot || buf->tb_eof || 1300 buf->tb_errno != 0); 1301 if (rv) { 1302 if (buf == NULL) { 1303 NDMP_LOG(LOG_DEBUG, "buf == NULL"); 1304 } else { 1305 NDMP_LOG(LOG_DEBUG, "eot: %u, eof: %u, errno: %d", 1306 buf->tb_eot, buf->tb_eof, buf->tb_errno); 1307 } 1308 } 1309 1310 return (rv); 1311 } 1312 1313 /* 1314 * ndmp_execute_cdb 1315 * 1316 * Main SCSI CDB execution program, this is used by message handler 1317 * for the NDMP tape/SCSI execute CDB requests. This function uses 1318 * USCSI interface to run the CDB command and sets all the CDB parameters 1319 * in the SCSI query before calling the USCSI ioctl. The result of the 1320 * CDB is returned in two places: 1321 * cmd.uscsi_status The status of CDB execution 1322 * cmd.uscsi_rqstatus The status of sense requests 1323 * reply.error The general errno (ioctl) 1324 * 1325 * Parameters: 1326 * session (input) - session pointer 1327 * adapter_name (input) - name of SCSI adapter 1328 * sid (input) - SCSI target ID 1329 * lun (input) - LUN number 1330 * request (input) - NDMP client CDB request 1331 * 1332 * Returns: 1333 * void 1334 */ 1335 /*ARGSUSED*/ 1336 void 1337 ndmp_execute_cdb(ndmpd_session_t *session, char *adapter_name, int sid, int lun, 1338 ndmp_execute_cdb_request *request) 1339 { 1340 ndmp_execute_cdb_reply reply; 1341 struct uscsi_cmd cmd; 1342 int fd; 1343 struct open_list *olp; 1344 char rq_buf[255]; 1345 1346 (void) memset((void *)&cmd, 0, sizeof (cmd)); 1347 (void) memset((void *)&reply, 0, sizeof (reply)); 1348 (void) memset((void *)rq_buf, 0, sizeof (rq_buf)); 1349 1350 if (request->flags == NDMP_SCSI_DATA_IN) { 1351 cmd.uscsi_flags = USCSI_READ | USCSI_RQENABLE; 1352 if ((cmd.uscsi_bufaddr = 1353 ndmp_malloc(request->datain_len)) == 0) { 1354 reply.error = NDMP_NO_MEM_ERR; 1355 if (ndmp_send_response(session->ns_connection, 1356 NDMP_NO_ERR, (void *)&reply) < 0) 1357 NDMP_LOG(LOG_DEBUG, "error sending" 1358 " scsi_execute_cdb reply."); 1359 return; 1360 } 1361 1362 cmd.uscsi_buflen = request->datain_len; 1363 cmd.uscsi_rqlen = sizeof (rq_buf); 1364 cmd.uscsi_rqbuf = rq_buf; 1365 } else if (request->flags == NDMP_SCSI_DATA_OUT) { 1366 cmd.uscsi_flags = USCSI_WRITE; 1367 cmd.uscsi_bufaddr = request->dataout.dataout_val; 1368 cmd.uscsi_buflen = request->dataout.dataout_len; 1369 } else { 1370 cmd.uscsi_flags = USCSI_RQENABLE; 1371 cmd.uscsi_bufaddr = 0; 1372 cmd.uscsi_buflen = 0; 1373 cmd.uscsi_rqlen = sizeof (rq_buf); 1374 cmd.uscsi_rqbuf = rq_buf; 1375 } 1376 1377 cmd.uscsi_timeout = (request->timeout < 1000) ? 1378 1 : (request->timeout / 1000); 1379 1380 cmd.uscsi_cdb = (caddr_t)request->cdb.cdb_val; 1381 cmd.uscsi_cdblen = request->cdb.cdb_len; 1382 1383 NDMP_LOG(LOG_DEBUG, "cmd: 0x%x, len: %d, flags: %d, datain_len: %d", 1384 request->cdb.cdb_val[0] & 0xff, request->cdb.cdb_len, 1385 request->flags, request->datain_len); 1386 NDMP_LOG(LOG_DEBUG, "dataout_len: %d, timeout: %d", 1387 request->dataout.dataout_len, request->timeout); 1388 1389 if (request->cdb.cdb_len > 12) { 1390 reply.error = NDMP_ILLEGAL_ARGS_ERR; 1391 ndmp_send_reply(session->ns_connection, (void *) &reply, 1392 "sending execute_cdb reply"); 1393 if (request->flags == NDMP_SCSI_DATA_IN) 1394 free(cmd.uscsi_bufaddr); 1395 return; 1396 } 1397 1398 reply.error = NDMP_NO_ERR; 1399 1400 if ((olp = ndmp_open_list_find(adapter_name, sid, lun)) != NULL) { 1401 fd = olp->ol_fd; 1402 } else { 1403 reply.error = NDMP_DEV_NOT_OPEN_ERR; 1404 ndmp_send_reply(session->ns_connection, (void *) &reply, 1405 "sending execute_cdb reply"); 1406 if (request->flags == NDMP_SCSI_DATA_IN) 1407 free(cmd.uscsi_bufaddr); 1408 return; 1409 } 1410 1411 if (ioctl(fd, USCSICMD, &cmd) < 0) { 1412 NDMP_LOG(LOG_ERR, "Failed to send command to device: %m"); 1413 NDMP_LOG(LOG_DEBUG, "ioctl(USCSICMD) error: %m"); 1414 if (cmd.uscsi_status == 0) 1415 reply.error = NDMP_IO_ERR; 1416 } 1417 1418 reply.status = cmd.uscsi_status; 1419 1420 if (request->flags == NDMP_SCSI_DATA_IN) { 1421 reply.datain.datain_len = cmd.uscsi_buflen; 1422 reply.datain.datain_val = cmd.uscsi_bufaddr; 1423 } else { 1424 reply.dataout_len = request->dataout.dataout_len; 1425 } 1426 1427 reply.ext_sense.ext_sense_len = cmd.uscsi_rqlen - cmd.uscsi_rqresid; 1428 reply.ext_sense.ext_sense_val = rq_buf; 1429 1430 if (ndmp_send_response(session->ns_connection, NDMP_NO_ERR, 1431 (void *)&reply) < 0) 1432 NDMP_LOG(LOG_DEBUG, "Error sending scsi_execute_cdb reply."); 1433 1434 if (request->flags == NDMP_SCSI_DATA_IN) 1435 free(cmd.uscsi_bufaddr); 1436 } 1437 1438 1439 /* 1440 * ndmp_stop_local_reader 1441 * 1442 * Stops a mover reader thread (for local backup only) 1443 * 1444 * Parameters: 1445 * session (input) - session pointer 1446 * cmds (input) - reader/writer command struct 1447 * 1448 * Returns: 1449 * void 1450 */ 1451 void 1452 ndmp_stop_local_reader(ndmpd_session_t *session, tlm_commands_t *cmds) 1453 { 1454 if (session != NULL) { 1455 if (session->ns_data.dd_sock == -1) { 1456 /* 1457 * 2-way restore. 1458 */ 1459 NDMP_LOG(LOG_DEBUG, "2-way restore"); 1460 if (cmds != NULL && cmds->tcs_reader_count > 0) { 1461 nlp_event_rv_set(session, -2); 1462 nlp_event_nw(session); 1463 } 1464 } 1465 } 1466 } 1467 1468 1469 /* 1470 * Stops a mover reader thread (for remote backup only) 1471 * 1472 * Parameters: 1473 * session (input) - session pointer 1474 * cmds (input) - reader/writer command struct 1475 * 1476 * Returns: 1477 * void 1478 */ 1479 void 1480 ndmp_stop_remote_reader(ndmpd_session_t *session) 1481 { 1482 if (session != NULL) { 1483 if (session->ns_data.dd_sock >= 0) { 1484 /* 1485 * 3-way restore. 1486 */ 1487 NDMP_LOG(LOG_DEBUG, 1488 "data.sock: %d", session->ns_data.dd_sock); 1489 (void) close(session->ns_data.dd_sock); 1490 session->ns_data.dd_sock = -1; 1491 } 1492 } 1493 } 1494 1495 1496 /* 1497 * ndmp_wait_for_reader 1498 * 1499 * Wait for a reader until get done (busy wait) 1500 */ 1501 void 1502 ndmp_wait_for_reader(tlm_commands_t *cmds) 1503 { 1504 if (cmds == NULL) { 1505 NDMP_LOG(LOG_DEBUG, "cmds == NULL"); 1506 } else { 1507 NDMP_LOG(LOG_DEBUG, 1508 "reader_count: %d", cmds->tcs_reader_count); 1509 1510 while (cmds->tcs_reader_count > 0) 1511 (void) sleep(1); 1512 } 1513 } 1514 1515 1516 /* 1517 * ndmp_open_list_find 1518 * 1519 * Find a specific device in the open list 1520 * 1521 * Parameters: 1522 * dev (input) - device name 1523 * sid (input) - SCSI target ID 1524 * lun (input) - LUN number 1525 * 1526 * Returns: 1527 * pointer to the open list entry 1528 */ 1529 struct open_list * 1530 ndmp_open_list_find(char *dev, int sid, int lun) 1531 { 1532 struct ol_head *olhp; 1533 struct open_list *olp; 1534 1535 if (dev == NULL || *dev == '\0') { 1536 NDMP_LOG(LOG_DEBUG, "Invalid argument"); 1537 return (NULL); 1538 } 1539 1540 (void) mutex_lock(&ol_mutex); 1541 olhp = &ol_head; 1542 for (olp = LIST_FIRST(olhp); olp != NULL; olp = LIST_NEXT(olp, ol_q)) 1543 if (strcmp(olp->ol_devnm, dev) == 0 && olp->ol_sid == sid && 1544 olp->ol_lun == lun) { 1545 (void) mutex_unlock(&ol_mutex); 1546 return (olp); 1547 } 1548 1549 (void) mutex_unlock(&ol_mutex); 1550 return (NULL); 1551 } 1552 1553 1554 /* 1555 * ndmp_open_list_add 1556 * 1557 * Add a specific device to the open list 1558 * 1559 * Parameters: 1560 * conn (input) - connection pointer 1561 * dev (input) - device name 1562 * sid (input) - SCSI target ID 1563 * lun (input) - LUN number 1564 * fd (input) - the device file descriptor 1565 * 1566 * Returns: 1567 * errno 1568 */ 1569 int 1570 ndmp_open_list_add(ndmp_connection_t *conn, char *dev, int sid, int lun, int fd) 1571 { 1572 int err; 1573 struct ol_head *olhp; 1574 struct open_list *olp; 1575 1576 if (dev == NULL || *dev == '\0') { 1577 NDMP_LOG(LOG_DEBUG, "Invalid argument"); 1578 return (EINVAL); 1579 } 1580 NDMP_LOG(LOG_DEBUG, 1581 "conn: 0x%08x, dev: %s, sid: %d, lun: %d", conn, dev, sid, lun); 1582 1583 err = 0; 1584 olhp = &ol_head; 1585 1586 if ((olp = ndmp_open_list_find(dev, sid, lun)) != NULL) { 1587 NDMP_LOG(LOG_DEBUG, "already in list"); 1588 /* 1589 * The adapter handle can be opened many times by the clients. 1590 * Only when the target is set, we must check and reject the 1591 * open request if the device is already being used by another 1592 * session. 1593 */ 1594 if (sid == -1) 1595 olp->ol_nref++; 1596 else 1597 err = EBUSY; 1598 } else if ((olp = ndmp_malloc(sizeof (struct open_list))) == NULL) { 1599 err = ENOMEM; 1600 } else if ((olp->ol_devnm = strdup(dev)) == NULL) { 1601 NDMP_LOG(LOG_ERR, "Out of memory."); 1602 free(olp); 1603 err = ENOMEM; 1604 } else { 1605 olp->cl_conn = conn; 1606 olp->ol_nref = 1; 1607 olp->ol_sid = sid; 1608 olp->ol_lun = lun; 1609 if (fd > 0) 1610 olp->ol_fd = fd; 1611 else 1612 olp->ol_fd = -1; 1613 (void) mutex_lock(&ol_mutex); 1614 LIST_INSERT_HEAD(olhp, olp, ol_q); 1615 (void) mutex_unlock(&ol_mutex); 1616 } 1617 1618 return (err); 1619 } 1620 1621 1622 /* 1623 * ndmp_open_list_del 1624 * 1625 * Delete a specific device from the open list 1626 * 1627 * Parameters: 1628 * dev (input) - device name 1629 * sid (input) - SCSI target ID 1630 * lun (input) - LUN number 1631 * 1632 * Returns: 1633 * errno 1634 */ 1635 int 1636 ndmp_open_list_del(char *dev, int sid, int lun) 1637 { 1638 struct open_list *olp; 1639 1640 if (dev == NULL || *dev == '\0') { 1641 NDMP_LOG(LOG_DEBUG, "Invalid argument"); 1642 return (EINVAL); 1643 } 1644 if ((olp = ndmp_open_list_find(dev, sid, lun)) == NULL) { 1645 NDMP_LOG(LOG_DEBUG, "%s not found", dev); 1646 return (ENOENT); 1647 } 1648 1649 (void) mutex_lock(&ol_mutex); 1650 if (--olp->ol_nref <= 0) { 1651 NDMP_LOG(LOG_DEBUG, 1652 "Removed dev: %s, sid: %d, lun: %d", dev, sid, lun); 1653 LIST_REMOVE(olp, ol_q); 1654 free(olp->ol_devnm); 1655 free(olp); 1656 } 1657 (void) mutex_unlock(&ol_mutex); 1658 1659 return (0); 1660 } 1661 1662 1663 /* 1664 * ndmp_open_list_release 1665 * 1666 * Close all the resources belonging to this connection. 1667 * 1668 * Parameters: 1669 * ndmp_connection_t *conn : connection identifier 1670 * 1671 * Returns: 1672 * void 1673 */ 1674 void 1675 ndmp_open_list_release(ndmp_connection_t *conn) 1676 { 1677 struct ol_head *olhp = &ol_head; 1678 struct open_list *olp; 1679 struct open_list *next; 1680 1681 (void) mutex_lock(&ol_mutex); 1682 olp = LIST_FIRST(olhp); 1683 while (olp != NULL) { 1684 next = LIST_NEXT(olp, ol_q); 1685 NDMP_LOG(LOG_DEBUG, "olp->conn 0x%08x", olp->cl_conn); 1686 if (olp->cl_conn == conn) { 1687 NDMP_LOG(LOG_DEBUG, 1688 "Removed dev: %s, sid: %d, lun: %d", 1689 olp->ol_devnm, olp->ol_sid, olp->ol_lun); 1690 LIST_REMOVE(olp, ol_q); 1691 if (olp->ol_fd > 0) 1692 (void) close(olp->ol_fd); 1693 free(olp->ol_devnm); 1694 free(olp); 1695 } 1696 olp = next; 1697 } 1698 (void) mutex_unlock(&ol_mutex); 1699 } 1700 1701 1702 /* 1703 * ndmp_stop_buffer_worker 1704 * 1705 * Stop all reader and writer threads for a specific buffer. 1706 * 1707 * Parameters: 1708 * session (input) - session pointer 1709 * 1710 * Returns: 1711 * void 1712 */ 1713 void 1714 ndmp_stop_buffer_worker(ndmpd_session_t *session) 1715 { 1716 ndmp_lbr_params_t *nlp; 1717 tlm_commands_t *cmds; 1718 1719 session->ns_tape.td_pos = 0; 1720 if ((nlp = ndmp_get_nlp(session)) == NULL) { 1721 NDMP_LOG(LOG_DEBUG, "nlp == NULL"); 1722 } else { 1723 cmds = &nlp->nlp_cmds; 1724 if (cmds->tcs_command == NULL) { 1725 NDMP_LOG(LOG_DEBUG, "cmds->tcs_command == NULL"); 1726 } else { 1727 cmds->tcs_reader = cmds->tcs_writer = TLM_ABORT; 1728 cmds->tcs_command->tc_reader = TLM_ABORT; 1729 cmds->tcs_command->tc_writer = TLM_ABORT; 1730 while (cmds->tcs_reader_count > 0 || 1731 cmds->tcs_writer_count > 0) { 1732 NDMP_LOG(LOG_DEBUG, 1733 "trying to stop buffer worker"); 1734 (void) sleep(1); 1735 } 1736 } 1737 } 1738 } 1739 1740 1741 /* 1742 * ndmp_stop_reader_thread 1743 * 1744 * Stop only the reader threads of a specific buffer 1745 * 1746 * Parameters: 1747 * session (input) - session pointer 1748 * 1749 * Returns: 1750 * void 1751 */ 1752 void 1753 ndmp_stop_reader_thread(ndmpd_session_t *session) 1754 { 1755 ndmp_lbr_params_t *nlp; 1756 tlm_commands_t *cmds; 1757 1758 if ((nlp = ndmp_get_nlp(session)) == NULL) { 1759 NDMP_LOG(LOG_DEBUG, "nlp == NULL"); 1760 } else { 1761 cmds = &nlp->nlp_cmds; 1762 if (cmds->tcs_command == NULL) { 1763 NDMP_LOG(LOG_DEBUG, "cmds->tcs_command == NULL"); 1764 } else { 1765 cmds->tcs_reader = TLM_ABORT; 1766 cmds->tcs_command->tc_reader = TLM_ABORT; 1767 while (cmds->tcs_reader_count > 0) { 1768 NDMP_LOG(LOG_DEBUG, 1769 "trying to stop reader thread"); 1770 (void) sleep(1); 1771 } 1772 } 1773 } 1774 } 1775 1776 1777 /* 1778 * ndmp_stop_reader_thread 1779 * 1780 * Stop only the writer threads of a specific buffer 1781 * 1782 * Parameters: 1783 * session (input) - session pointer 1784 * 1785 * Returns: 1786 * void 1787 */ 1788 void 1789 ndmp_stop_writer_thread(ndmpd_session_t *session) 1790 { 1791 ndmp_lbr_params_t *nlp; 1792 tlm_commands_t *cmds; 1793 1794 if ((nlp = ndmp_get_nlp(session)) == NULL) { 1795 NDMP_LOG(LOG_DEBUG, "nlp == NULL"); 1796 } else { 1797 cmds = &nlp->nlp_cmds; 1798 if (cmds->tcs_command == NULL) { 1799 NDMP_LOG(LOG_DEBUG, "cmds->tcs_command == NULL"); 1800 } else { 1801 cmds->tcs_writer = TLM_ABORT; 1802 cmds->tcs_command->tc_writer = TLM_ABORT; 1803 while (cmds->tcs_writer_count > 0) { 1804 NDMP_LOG(LOG_DEBUG, 1805 "trying to stop writer thread"); 1806 (void) sleep(1); 1807 } 1808 } 1809 } 1810 } 1811 1812 1813 /* 1814 * ndmp_free_reader_writer_ipc 1815 * 1816 * Free and release the reader/writer buffers and the IPC structure 1817 * for reader and writer threads. 1818 * 1819 * Parameters: 1820 * session (input) - session pointer 1821 * 1822 * Returns: 1823 * void 1824 */ 1825 void 1826 ndmp_free_reader_writer_ipc(ndmpd_session_t *session) 1827 { 1828 ndmp_lbr_params_t *nlp; 1829 tlm_commands_t *cmds; 1830 1831 if ((nlp = ndmp_get_nlp(session)) != NULL) { 1832 cmds = &nlp->nlp_cmds; 1833 if (cmds->tcs_command != NULL) { 1834 NDMP_LOG(LOG_DEBUG, "cmds->tcs_command->tc_ref: %d", 1835 cmds->tcs_command->tc_ref); 1836 tlm_release_reader_writer_ipc(cmds->tcs_command); 1837 } 1838 } 1839 } 1840 1841 1842 /* 1843 * ndmp_waitfor_op 1844 * 1845 * Wait for a session reference count to drop to zero 1846 * 1847 * Parameters: 1848 * session (input) - session pointer 1849 * 1850 * Returns: 1851 * void 1852 */ 1853 void 1854 ndmp_waitfor_op(ndmpd_session_t *session) 1855 { 1856 if (session != NULL) { 1857 while (session->ns_nref > 0) { 1858 (void) sleep(1); 1859 NDMP_LOG(LOG_DEBUG, 1860 "waiting for session nref: %d", session->ns_nref); 1861 } 1862 } 1863 } 1864 1865 1866 /* 1867 * ndmp_session_ref 1868 * 1869 * Increment the reference count of the session 1870 * 1871 * Parameters: 1872 * session (input) - session pointer 1873 * 1874 * Returns: 1875 * void 1876 */ 1877 void 1878 ndmp_session_ref(ndmpd_session_t *session) 1879 { 1880 (void) mutex_lock(&session->ns_lock); 1881 session->ns_nref++; 1882 (void) mutex_unlock(&session->ns_lock); 1883 } 1884 1885 1886 /* 1887 * ndmp_session_unref 1888 * 1889 * Decrement the reference count of the session 1890 * 1891 * Parameters: 1892 * session (input) - session pointer 1893 * 1894 * Returns: 1895 * void 1896 */ 1897 void 1898 ndmp_session_unref(ndmpd_session_t *session) 1899 { 1900 (void) mutex_lock(&session->ns_lock); 1901 session->ns_nref--; 1902 (void) mutex_unlock(&session->ns_lock); 1903 } 1904 1905 1906 /* 1907 * ndmp_addr2str_v3 1908 * 1909 * Convert the address type to a string 1910 * 1911 * Parameters: 1912 * type (input) - address type 1913 * 1914 * Returns: 1915 * type in string 1916 */ 1917 char * 1918 ndmp_addr2str_v3(ndmp_addr_type type) 1919 { 1920 char *rv; 1921 1922 switch (type) { 1923 case NDMP_ADDR_LOCAL: 1924 rv = "Local"; 1925 break; 1926 case NDMP_ADDR_TCP: 1927 rv = "TCP"; 1928 break; 1929 case NDMP_ADDR_FC: 1930 rv = "FC"; 1931 break; 1932 case NDMP_ADDR_IPC: 1933 rv = "IPC"; 1934 break; 1935 default: 1936 rv = "Unknown"; 1937 } 1938 1939 return (rv); 1940 } 1941 1942 1943 /* 1944 * ndmp_valid_v3addr_type 1945 * 1946 * Make sure that the NDMP address is from any of the 1947 * valid types 1948 * 1949 * Parameters: 1950 * type (input) - address type 1951 * 1952 * Returns: 1953 * 1: valid 1954 * 0: invalid 1955 */ 1956 boolean_t 1957 ndmp_valid_v3addr_type(ndmp_addr_type type) 1958 { 1959 boolean_t rv; 1960 1961 switch (type) { 1962 case NDMP_ADDR_LOCAL: 1963 case NDMP_ADDR_TCP: 1964 case NDMP_ADDR_FC: 1965 case NDMP_ADDR_IPC: 1966 rv = TRUE; 1967 break; 1968 default: 1969 rv = FALSE; 1970 } 1971 1972 return (rv); 1973 } 1974 1975 1976 /* 1977 * ndmp_copy_addr_v3 1978 * 1979 * Copy NDMP address from source to destination (V2 and V3 only) 1980 * 1981 * Parameters: 1982 * dst (ouput) - destination address 1983 * src (input) - source address 1984 * 1985 * Returns: 1986 * void 1987 */ 1988 void 1989 ndmp_copy_addr_v3(ndmp_addr_v3 *dst, ndmp_addr_v3 *src) 1990 { 1991 dst->addr_type = src->addr_type; 1992 switch (src->addr_type) { 1993 case NDMP_ADDR_LOCAL: 1994 /* nothing */ 1995 break; 1996 case NDMP_ADDR_TCP: 1997 dst->tcp_ip_v3 = htonl(src->tcp_ip_v3); 1998 dst->tcp_port_v3 = src->tcp_port_v3; 1999 break; 2000 case NDMP_ADDR_FC: 2001 case NDMP_ADDR_IPC: 2002 default: 2003 break; 2004 } 2005 } 2006 2007 2008 /* 2009 * ndmp_copy_addr_v4 2010 * 2011 * Copy NDMP address from source to destination. V4 has a extra 2012 * environment list inside the address too which needs to be copied. 2013 * 2014 * Parameters: 2015 * dst (ouput) - destination address 2016 * src (input) - source address 2017 * 2018 * Returns: 2019 * void 2020 */ 2021 void 2022 ndmp_copy_addr_v4(ndmp_addr_v4 *dst, ndmp_addr_v4 *src) 2023 { 2024 int i; 2025 2026 dst->addr_type = src->addr_type; 2027 dst->tcp_len_v4 = src->tcp_len_v4; 2028 switch (src->addr_type) { 2029 case NDMP_ADDR_LOCAL: 2030 /* nothing */ 2031 break; 2032 case NDMP_ADDR_TCP: 2033 dst->tcp_addr_v4 = ndmp_malloc(sizeof (ndmp_tcp_addr_v4) * 2034 src->tcp_len_v4); 2035 if (dst->tcp_addr_v4 == 0) 2036 return; 2037 2038 for (i = 0; i < src->tcp_len_v4; i++) { 2039 dst->tcp_ip_v4(i) = htonl(src->tcp_ip_v4(i)); 2040 dst->tcp_port_v4(i) = src->tcp_port_v4(i); 2041 dst->tcp_env_v4(i).addr_env_len = 0; /* Solaris */ 2042 dst->tcp_env_v4(i).addr_env_val = 0; /* Solaris */ 2043 } 2044 break; 2045 case NDMP_ADDR_FC: 2046 case NDMP_ADDR_IPC: 2047 default: 2048 break; 2049 } 2050 } 2051 2052 2053 /* 2054 * ndmp_connect_sock_v3 2055 * 2056 * Creates a socket and connects to the specified address/port 2057 * 2058 * Parameters: 2059 * addr (input) - IP address 2060 * port (input) - port number 2061 * 2062 * Returns: 2063 * 0: on success 2064 * -1: otherwise 2065 */ 2066 int 2067 ndmp_connect_sock_v3(ulong_t addr, ushort_t port) 2068 { 2069 int sock; 2070 struct sockaddr_in sin; 2071 int flag = 1; 2072 2073 NDMP_LOG(LOG_DEBUG, "addr %s:%d", inet_ntoa(IN_ADDR(addr)), port); 2074 2075 sock = socket(AF_INET, SOCK_STREAM, 0); 2076 if (sock < 0) { 2077 NDMP_LOG(LOG_DEBUG, "Socket error: %m"); 2078 return (-1); 2079 } 2080 2081 (void) memset((void *) &sin, 0, sizeof (sin)); 2082 sin.sin_family = AF_INET; 2083 sin.sin_addr.s_addr = htonl(addr); 2084 sin.sin_port = htons(port); 2085 if (connect(sock, (struct sockaddr *)&sin, sizeof (sin)) < 0) { 2086 NDMP_LOG(LOG_DEBUG, "Connect error: %m"); 2087 (void) close(sock); 2088 sock = -1; 2089 } else { 2090 if (ndmp_sbs > 0) 2091 ndmp_set_socket_snd_buf(sock, ndmp_sbs*KILOBYTE); 2092 if (ndmp_rbs > 0) 2093 ndmp_set_socket_rcv_buf(sock, ndmp_rbs*KILOBYTE); 2094 2095 ndmp_set_socket_nodelay(sock); 2096 (void) setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, &flag, 2097 sizeof (flag)); 2098 2099 NDMP_LOG(LOG_DEBUG, "sock %d", sock); 2100 } 2101 2102 return (sock); 2103 } 2104 2105 /* 2106 * ndmp_create_socket 2107 * 2108 * Creates a socket for listening for accepting data connections. 2109 * 2110 * Parameters: 2111 * session (input) - session pointer. 2112 * addr (output) - location to store address of socket. 2113 * port (output) - location to store port of socket. 2114 * 2115 * Returns: 2116 * 0 - success. 2117 * -1 - error. 2118 */ 2119 int 2120 ndmp_create_socket(ulong_t *addr, ushort_t *port) 2121 { 2122 char *p; 2123 int length; 2124 int sd; 2125 struct sockaddr_in sin; 2126 2127 p = ndmpd_get_prop(NDMP_MOVER_NIC); 2128 2129 if (!p || *p == 0) 2130 p = gethostaddr(); 2131 2132 if (!p) { 2133 NDMP_LOG(LOG_ERR, "Undetermined network port."); 2134 return (-1); 2135 } 2136 2137 *addr = inet_addr(p); 2138 2139 sd = socket(AF_INET, SOCK_STREAM, 0); 2140 if (sd < 0) { 2141 NDMP_LOG(LOG_DEBUG, "Socket error: %m"); 2142 return (-1); 2143 } 2144 sin.sin_family = AF_INET; 2145 sin.sin_addr.s_addr = INADDR_ANY; 2146 sin.sin_port = 0; 2147 length = sizeof (sin); 2148 2149 if (bind(sd, (struct sockaddr *)&sin, sizeof (sin)) < 0) { 2150 NDMP_LOG(LOG_DEBUG, "Bind error: %m"); 2151 (void) close(sd); 2152 sd = -1; 2153 } else if (getsockname(sd, (struct sockaddr *)&sin, &length) < 0) { 2154 NDMP_LOG(LOG_DEBUG, "getsockname error: %m"); 2155 (void) close(sd); 2156 sd = -1; 2157 } else if (listen(sd, 5) < 0) { 2158 NDMP_LOG(LOG_DEBUG, "Listen error: %m"); 2159 (void) close(sd); 2160 sd = -1; 2161 } else 2162 *port = sin.sin_port; 2163 2164 return (sd); 2165 } 2166 2167 2168 /* 2169 * cctime 2170 * 2171 * Convert the specified time into a string. It's like 2172 * ctime(), but: 2173 * - chops the trailing '\n' of ctime. 2174 * - and returns "the epoch" if time is 0. 2175 * 2176 * Returns: 2177 * "": invalid argument. 2178 * "the epoch": if time is 0. 2179 * string format of the time. 2180 */ 2181 char * 2182 cctime(time_t *t) 2183 { 2184 char *bp, *cp; 2185 static char tbuf[BUFSIZ]; 2186 2187 if (!t) 2188 return (""); 2189 2190 if (*t == (time_t)0) 2191 return ("the epoch"); 2192 2193 if ((bp = ctime_r(t, tbuf, BUFSIZ)) == NULL) 2194 return (""); 2195 2196 cp = strchr(bp, '\n'); 2197 if (cp) 2198 *cp = '\0'; 2199 2200 return (bp); 2201 } 2202 2203 2204 /* 2205 * ndmp_new_job_name 2206 * 2207 * Create a job name for each backup/restore to keep track 2208 * 2209 * Parameters: 2210 * jname (output) - job name 2211 * 2212 * Returns: 2213 * jname 2214 */ 2215 char * 2216 ndmp_new_job_name(char *jname) 2217 { 2218 if (jname != NULL) { 2219 (void) snprintf(jname, TLM_MAX_BACKUP_JOB_NAME, "%s%d", 2220 NDMP_RCF_BASENAME, ndmp_job_cnt++); 2221 NDMP_LOG(LOG_DEBUG, "jname: \"%s\"", jname); 2222 } 2223 2224 return (jname); 2225 } 2226 2227 2228 /* 2229 * fs_is_valid_logvol 2230 * 2231 * Check if the log path exists 2232 * 2233 * Parameters: 2234 * path (input) - log path 2235 * 2236 * Returns: 2237 * FALSE: invalid 2238 * TRUE: valid 2239 */ 2240 boolean_t 2241 fs_is_valid_logvol(char *path) 2242 { 2243 struct stat64 st; 2244 2245 if (stat64(path, &st) < 0) 2246 return (FALSE); 2247 2248 return (TRUE); 2249 } 2250 2251 2252 /* 2253 * ndmpd_mk_temp 2254 * 2255 * Make a temporary file using the working directory path and the 2256 * jobname 2257 * 2258 * Parameters: 2259 * buf (output) - the temporary file name path 2260 * 2261 * Returns: 2262 * buf 2263 */ 2264 char * 2265 ndmpd_mk_temp(char *buf) 2266 { 2267 char fname[TLM_MAX_BACKUP_JOB_NAME]; 2268 const char *dir; 2269 char *rv; 2270 2271 if (!buf) 2272 return (NULL); 2273 2274 dir = ndmpd_get_prop(NDMP_DEBUG_PATH); 2275 if (dir == 0 || *dir == '\0') { 2276 NDMP_LOG(LOG_DEBUG, "NDMP work path not specified"); 2277 return (0); 2278 } 2279 2280 if (!fs_is_valid_logvol((char *)dir)) { 2281 NDMP_LOG(LOG_ERR, 2282 "Log file path cannot be on system volumes."); 2283 return (0); 2284 } 2285 2286 dir += strspn(dir, " \t"); 2287 if (!*dir) { 2288 NDMP_LOG(LOG_DEBUG, "NDMP work path not specified"); 2289 return (0); 2290 } 2291 2292 rv = buf; 2293 (void) ndmp_new_job_name(fname); 2294 (void) tlm_cat_path(buf, (char *)dir, fname); 2295 2296 return (rv); 2297 } 2298 2299 2300 /* 2301 * ndmpd_make_bk_dir_path 2302 * 2303 * Make a directory path for temporary files under the NDMP 2304 * working directory. 2305 * 2306 * Parameters: 2307 * buf (output) - result path 2308 * fname (input) - the file name 2309 * 2310 * Returns: 2311 * buf 2312 */ 2313 char * 2314 ndmpd_make_bk_dir_path(char *buf, char *fname) 2315 { 2316 const char *p; 2317 char *name; 2318 char path[PATH_MAX]; 2319 2320 if (!buf || !fname || !*fname) 2321 return (NULL); 2322 2323 p = ndmpd_get_prop(NDMP_DEBUG_PATH); 2324 if (p == NULL || *p == '\0' || !fs_is_valid_logvol((char *)p)) { 2325 return (NULL); 2326 } 2327 2328 (void) strlcpy(path, (char *)p, PATH_MAX); 2329 (void) trim_whitespace(path); 2330 2331 if ((name = strrchr(fname, '/')) == 0) 2332 name = fname; 2333 2334 (void) tlm_cat_path(buf, path, name); 2335 return (buf); 2336 } 2337 2338 2339 /* 2340 * ndmp_is_chkpnt_root 2341 * 2342 * Is this a root checkpoint (snapshot) directory. 2343 * Note: a temporary function 2344 */ 2345 boolean_t 2346 ndmp_is_chkpnt_root(char *path) 2347 { 2348 struct stat64 st; 2349 2350 if (stat64(path, &st) != 0) { 2351 NDMP_LOG(LOG_DEBUG, "Couldn't stat path \"%s\"", path); 2352 return (TRUE); 2353 } 2354 return (FALSE); 2355 } 2356 2357 2358 /* 2359 * ndmpd_make_exc_list 2360 * 2361 * Make a list of files that should not be backed up. 2362 * 2363 * Parameters: 2364 * void 2365 * 2366 * Returns: 2367 * list - array of character strings 2368 */ 2369 char ** 2370 ndmpd_make_exc_list(void) 2371 { 2372 char *val, **cpp; 2373 int i, n; 2374 2375 n = sizeof (exls); 2376 if ((cpp = ndmp_malloc(n)) != NULL) { 2377 for (i = 0; exls[i] != NULL; i++) 2378 cpp[i] = exls[i]; 2379 2380 /* 2381 * If ndmpd_get_prop returns NULL, the array will be 2382 * null-terminated. 2383 */ 2384 val = ndmpd_get_prop(NDMP_DEBUG_PATH); 2385 cpp[i] = val; 2386 } 2387 2388 return (cpp); 2389 } 2390 2391 2392 /* 2393 * ndmp_get_bk_dir_ino 2394 * 2395 * Get the inode number of the backup directory 2396 */ 2397 int 2398 ndmp_get_bk_dir_ino(ndmp_lbr_params_t *nlp) 2399 { 2400 int rv; 2401 struct stat64 st; 2402 2403 if (stat64(nlp->nlp_backup_path, &st) != 0) { 2404 rv = -1; 2405 NDMP_LOG(LOG_DEBUG, "Getting inode # of \"%s\"", 2406 nlp->nlp_backup_path); 2407 } else { 2408 rv = 0; 2409 nlp->nlp_bkdirino = st.st_ino; 2410 NDMP_LOG(LOG_DEBUG, "nlp_bkdirino: %lu", 2411 (uint_t)nlp->nlp_bkdirino); 2412 } 2413 2414 return (rv); 2415 } 2416 2417 2418 /* 2419 * ndmp_check_utf8magic 2420 * 2421 * Check if the magic string for exists in the tar header. This 2422 * magic string (which also indicates that the file names are in 2423 * UTF8 format) is used as a crest to indetify our own tapes. 2424 * This checking is always done before all restores except DAR 2425 * restores. 2426 */ 2427 boolean_t 2428 ndmp_check_utf8magic(tlm_cmd_t *cmd) 2429 { 2430 char *cp; 2431 int err, len, actual_size; 2432 2433 if (cmd == NULL) { 2434 NDMP_LOG(LOG_DEBUG, "cmd == NULL"); 2435 return (FALSE); 2436 } 2437 if (cmd->tc_buffers == NULL) { 2438 NDMP_LOG(LOG_DEBUG, "cmd->tc_buffers == NULL"); 2439 return (FALSE); 2440 } 2441 2442 /* wait until the first buffer gets full. */ 2443 tlm_buffer_in_buf_wait(cmd->tc_buffers); 2444 2445 err = actual_size = 0; 2446 cp = tlm_get_read_buffer(RECORDSIZE, &err, cmd->tc_buffers, 2447 &actual_size); 2448 if (cp == NULL) { 2449 NDMP_LOG(LOG_DEBUG, "Can't read from buffers, err: %d", err); 2450 return (FALSE); 2451 } 2452 len = strlen(NDMPUTF8MAGIC); 2453 if (actual_size < len) { 2454 NDMP_LOG(LOG_DEBUG, "Not enough data in the buffers"); 2455 return (FALSE); 2456 } 2457 2458 return ((strncmp(cp, NDMPUTF8MAGIC, len) == 0) ? TRUE : FALSE); 2459 } 2460 2461 2462 /* 2463 * ndmp_get_cur_bk_time 2464 * 2465 * Get the backup checkpoint time. 2466 */ 2467 int 2468 ndmp_get_cur_bk_time(ndmp_lbr_params_t *nlp, time_t *tp, char *jname) 2469 { 2470 int err; 2471 2472 if (!nlp || !nlp->nlp_backup_path || !tp) { 2473 NDMP_LOG(LOG_DEBUG, "Invalid argument"); 2474 return (-1); 2475 } 2476 2477 if (!fs_is_chkpnt_enabled(nlp->nlp_backup_path)) { 2478 NDMP_LOG(LOG_DEBUG, "Not a chkpnt volume %s", 2479 nlp->nlp_backup_path); 2480 *tp = time(NULL); 2481 return (0); 2482 } 2483 2484 err = tlm_get_chkpnt_time(nlp->nlp_backup_path, !NLP_ISCHKPNTED(nlp), 2485 tp, jname); 2486 if (err != 0) { 2487 NDMP_LOG(LOG_DEBUG, "Can't checkpoint time"); 2488 } else { 2489 NDMP_LOG(LOG_DEBUG, "%s", cctime(tp)); 2490 } 2491 2492 return (err); 2493 } 2494 2495 2496 /* 2497 * get_relative_path 2498 */ 2499 char * 2500 ndmp_get_relative_path(char *base, char *fullpath) 2501 { 2502 char *p = fullpath; 2503 2504 if (!base || !*base) 2505 return (fullpath); 2506 2507 while (*base) { 2508 if (*base != *p) 2509 break; 2510 p++; base++; 2511 } 2512 2513 if (*p == '/') 2514 p++; 2515 2516 return ((*base) ? fullpath : p); 2517 } 2518 2519 2520 /* 2521 * ndmp_get_nlp 2522 * 2523 * Get NDMP local backup parameters 2524 * 2525 * Parameter: 2526 * session cooke 2527 * 2528 * Returns: 2529 * LBR structure 2530 */ 2531 ndmp_lbr_params_t * 2532 ndmp_get_nlp(void *cookie) 2533 { 2534 if (cookie == NULL) 2535 return (NULL); 2536 2537 return (((ndmpd_session_t *)cookie)->ns_ndmp_lbr_params); 2538 } 2539 2540 2541 /* 2542 * is_tape_unit_ready 2543 * 2544 * Check if the tape device is ready or not 2545 */ 2546 boolean_t 2547 is_tape_unit_ready(char *adptnm, int dev_id) 2548 { 2549 int try; 2550 int fd = 0; 2551 2552 try = TUR_MAX_TRY; 2553 if (dev_id <= 0) { 2554 if ((fd = open(adptnm, O_RDONLY | O_NDELAY)) < 0) 2555 return (FALSE); 2556 } else { 2557 fd = dev_id; 2558 } 2559 do { 2560 if (scsi_test_unit_ready(fd) >= 0) { 2561 NDMP_LOG(LOG_DEBUG, "Unit is ready"); 2562 2563 if (dev_id <= 0) 2564 (void) close(fd); 2565 2566 return (TRUE); 2567 } 2568 2569 NDMP_LOG(LOG_DEBUG, "Unit not ready"); 2570 (void) usleep(TUR_WAIT); 2571 2572 } while (--try > 0); 2573 2574 if (dev_id <= 0) 2575 (void) close(fd); 2576 2577 NDMP_LOG(LOG_DEBUG, "Unit didn't get ready"); 2578 return (FALSE); 2579 } 2580 2581 2582 /* 2583 * scsi_test_unit_ready 2584 * 2585 * This is for Test Unit Read, without this function, the only 2586 * impact is getting EBUSY's before each operation which we have 2587 * busy waiting loops checking EBUSY error code. 2588 */ 2589 static int 2590 scsi_test_unit_ready(int dev_id) 2591 { 2592 struct uscsi_cmd ucmd; 2593 union scsi_cdb cdb; 2594 int retval; 2595 2596 (void) memset(&ucmd, 0, sizeof (struct uscsi_cmd)); 2597 (void) memset(&cdb, 0, sizeof (union scsi_cdb)); 2598 cdb.scc_cmd = SCMD_TEST_UNIT_READY; 2599 ucmd.uscsi_cdb = (caddr_t)&cdb; 2600 ucmd.uscsi_cdblen = CDB_GROUP0; 2601 ucmd.uscsi_flags |= USCSI_SILENT; 2602 ucmd.uscsi_timeout = 60; /* Allow maximum 1 min */ 2603 2604 retval = ioctl(dev_id, USCSICMD, &ucmd); 2605 2606 if (retval != 0 && errno != EIO) { 2607 NDMP_LOG(LOG_ERR, 2608 "Failed to send inquiry request to device: %m."); 2609 NDMP_LOG(LOG_DEBUG, "Inquiry request failed for" 2610 " dev_id:%d err=%d -%m", dev_id, errno); 2611 retval = -errno; 2612 } else 2613 retval = -(ucmd.uscsi_status); 2614 2615 return (retval); 2616 } 2617 2618 2619 /* 2620 * ndmp_load_params 2621 * 2622 * Load the parameters. 2623 * 2624 * Parameter: 2625 * void 2626 * 2627 * Returns: 2628 * void 2629 */ 2630 void 2631 ndmp_load_params(void) 2632 { 2633 ndmp_dump_path_node = ndmpd_get_prop_yorn(NDMP_DUMP_PATHNODE_ENV) ? 2634 TRUE : FALSE; 2635 ndmp_tar_path_node = ndmpd_get_prop_yorn(NDMP_TAR_PATHNODE_ENV) ? 2636 TRUE : FALSE; 2637 ndmp_ignore_ctime = 2638 ndmpd_get_prop_yorn(NDMP_IGNCTIME_ENV) ? TRUE : FALSE; 2639 ndmp_include_lmtime = ndmpd_get_prop_yorn(NDMP_INCLMTIME_ENV) ? 2640 TRUE : FALSE; 2641 ndmp_max_tok_seq = atoi(ndmpd_get_prop_default(NDMP_MAXSEQ_ENV, "9")); 2642 2643 ndmp_full_restore_path = ndmpd_get_prop_yorn(NDMP_FULL_RESTORE_PATH) ? 2644 TRUE : FALSE; 2645 2646 ndmp_fhinode = ndmpd_get_prop_yorn(NDMP_FHIST_INCR_ENV) ? TRUE : FALSE; 2647 2648 /* Get the value from ndmp SMF property. */ 2649 ndmp_dar_support = ndmpd_get_prop_yorn(NDMP_DAR_SUPPORT); 2650 2651 if ((ndmp_ver = atoi(ndmpd_get_prop(NDMP_VERSION_ENV))) == 0) 2652 ndmp_ver = NDMPVER; 2653 } 2654 2655 /* 2656 * randomize 2657 * 2658 * Randomize the contents of a buffer 2659 * 2660 * Parameter: 2661 * buffer (output) - destination buffer 2662 * size (input) - buffer size 2663 * 2664 * Returns: 2665 * void 2666 */ 2667 void 2668 randomize(unsigned char *buffer, int size) 2669 { 2670 /* LINTED improper alignment */ 2671 unsigned int *p = (unsigned int *)buffer; 2672 unsigned int dwlen = size / sizeof (unsigned int); 2673 unsigned int remlen = size % sizeof (unsigned int); 2674 unsigned int tmp; 2675 unsigned int i; 2676 2677 for (i = 0; i < dwlen; i++) 2678 *p++ = random(); 2679 2680 if (remlen) { 2681 tmp = random(); 2682 (void) memcpy(p, &tmp, remlen); 2683 } 2684 } 2685 2686 /* 2687 * ndmpd_get_file_entry_type 2688 * 2689 * Converts the mode to the NDMP file type 2690 * 2691 * Parameter: 2692 * mode (input) - file mode 2693 * ftype (output) - file type 2694 * 2695 * Returns: 2696 * void 2697 */ 2698 void 2699 ndmpd_get_file_entry_type(int mode, ndmp_file_type *ftype) 2700 { 2701 switch (mode & S_IFMT) { 2702 case S_IFIFO: 2703 *ftype = NDMP_FILE_FIFO; 2704 break; 2705 case S_IFCHR: 2706 *ftype = NDMP_FILE_CSPEC; 2707 break; 2708 case S_IFDIR: 2709 *ftype = NDMP_FILE_DIR; 2710 break; 2711 case S_IFBLK: 2712 *ftype = NDMP_FILE_BSPEC; 2713 break; 2714 case S_IFREG: 2715 *ftype = NDMP_FILE_REG; 2716 break; 2717 case S_IFLNK: 2718 *ftype = NDMP_FILE_SLINK; 2719 break; 2720 default: 2721 *ftype = NDMP_FILE_SOCK; 2722 break; 2723 } 2724 } 2725 2726 /* 2727 * Set a private data in the plugin context 2728 */ 2729 void 2730 ndmp_context_set_specific(ndmp_context_t *nctx, void *ptr) 2731 { 2732 nctx->nc_pldata = ptr; 2733 } 2734 2735 /* 2736 * Get a private data in the plugin context 2737 */ 2738 void * 2739 ndmp_context_get_specific(ndmp_context_t *nctx) 2740 { 2741 return (nctx->nc_pldata); 2742 } 2743