1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 25 #include <unistd.h> 26 #include <errno.h> 27 #include <ctype.h> 28 #include <fcntl.h> 29 #include <strings.h> 30 #include <dirent.h> 31 #include <stdlib.h> 32 #include <netinet/in.h> 33 #include <arpa/inet.h> 34 #include <sys/param.h> 35 #include <sys/stat.h> 36 #include <sys/dld.h> 37 #include <sys/dld_ioc.h> 38 #include <libdladm_impl.h> 39 #include <libintl.h> 40 #include <libdlpi.h> 41 42 static char dladm_rootdir[MAXPATHLEN] = "/"; 43 44 typedef struct media_type_desc { 45 uint32_t media_type; 46 #define MAX_MEDIA_TYPE_STRING 32 47 const char media_type_str[MAX_MEDIA_TYPE_STRING]; 48 } media_type_t; 49 50 static media_type_t media_type_table[] = { 51 { DL_ETHER, "Ethernet" }, 52 { DL_WIFI, "WiFi" }, 53 { DL_IB, "Infiniband" }, 54 { DL_IPV4, "IPv4Tunnel" }, 55 { DL_IPV6, "IPv6Tunnel" }, 56 { DL_6TO4, "6to4Tunnel" }, 57 { DL_CSMACD, "CSMA/CD" }, 58 { DL_TPB, "TokenBus" }, 59 { DL_TPR, "TokenRing" }, 60 { DL_METRO, "MetroNet" }, 61 { DL_HDLC, "HDLC" }, 62 { DL_CHAR, "SyncCharacter" }, 63 { DL_CTCA, "CTCA" }, 64 { DL_FDDI, "FDDI" }, 65 { DL_FC, "FiberChannel" }, 66 { DL_ATM, "ATM" }, 67 { DL_IPATM, "ATM(ClassicIP)" }, 68 { DL_X25, "X.25" }, 69 { DL_IPX25, "X.25(ClassicIP)" }, 70 { DL_ISDN, "ISDN" }, 71 { DL_HIPPI, "HIPPI" }, 72 { DL_100VG, "100BaseVGEthernet" }, 73 { DL_100VGTPR, "100BaseVGTokenRing" }, 74 { DL_ETH_CSMA, "IEEE802.3" }, 75 { DL_100BT, "100BaseT" }, 76 { DL_FRAME, "FrameRelay" }, 77 { DL_MPFRAME, "MPFrameRelay" }, 78 { DL_ASYNC, "AsyncCharacter" }, 79 { DL_IPNET, "IPNET" }, 80 { DL_OTHER, "Other" } 81 }; 82 #define MEDIATYPECOUNT (sizeof (media_type_table) / sizeof (media_type_t)) 83 84 typedef struct { 85 uint32_t lp_type; 86 char *lp_name; 87 } link_protect_t; 88 89 static link_protect_t link_protect_types[] = { 90 { MPT_MACNOSPOOF, "mac-nospoof" }, 91 { MPT_RESTRICTED, "restricted" }, 92 { MPT_IPNOSPOOF, "ip-nospoof" }, 93 { MPT_DHCPNOSPOOF, "dhcp-nospoof" } 94 }; 95 #define LPTYPES (sizeof (link_protect_types) / sizeof (link_protect_t)) 96 97 dladm_status_t 98 dladm_open(dladm_handle_t *handle) 99 { 100 int dld_fd; 101 102 if (handle == NULL) 103 return (DLADM_STATUS_BADARG); 104 105 if ((dld_fd = open(DLD_CONTROL_DEV, O_RDWR)) < 0) 106 return (dladm_errno2status(errno)); 107 108 /* 109 * Don't open DLMGMT_DOOR now. dlmgmtd(1M) is not able to 110 * open the door when the dladm handle is opened because the 111 * door hasn't been created yet at that time. Thus, we must 112 * open it on-demand in dladm_door_fd(). Move the open() 113 * to dladm_door_fd() for all cases. 114 */ 115 116 if ((*handle = malloc(sizeof (struct dladm_handle))) == NULL) { 117 (void) close(dld_fd); 118 return (DLADM_STATUS_NOMEM); 119 } 120 121 (*handle)->dld_fd = dld_fd; 122 (*handle)->door_fd = -1; 123 124 return (DLADM_STATUS_OK); 125 } 126 127 void 128 dladm_close(dladm_handle_t handle) 129 { 130 if (handle != NULL) { 131 (void) close(handle->dld_fd); 132 if (handle->door_fd != -1) 133 (void) close(handle->door_fd); 134 free(handle); 135 } 136 } 137 138 int 139 dladm_dld_fd(dladm_handle_t handle) 140 { 141 return (handle->dld_fd); 142 } 143 144 /* 145 * If DLMGMT_DOOR hasn't been opened in the handle yet, open it. 146 */ 147 dladm_status_t 148 dladm_door_fd(dladm_handle_t handle, int *door_fd) 149 { 150 int fd; 151 152 if (handle->door_fd == -1) { 153 if ((fd = open(DLMGMT_DOOR, O_RDONLY)) < 0) 154 return (dladm_errno2status(errno)); 155 handle->door_fd = fd; 156 } 157 *door_fd = handle->door_fd; 158 159 return (DLADM_STATUS_OK); 160 } 161 162 const char * 163 dladm_status2str(dladm_status_t status, char *buf) 164 { 165 const char *s; 166 167 switch (status) { 168 case DLADM_STATUS_OK: 169 s = "ok"; 170 break; 171 case DLADM_STATUS_BADARG: 172 s = "invalid argument"; 173 break; 174 case DLADM_STATUS_FAILED: 175 s = "operation failed"; 176 break; 177 case DLADM_STATUS_TOOSMALL: 178 s = "buffer size too small"; 179 break; 180 case DLADM_STATUS_NOTSUP: 181 s = "operation not supported"; 182 break; 183 case DLADM_STATUS_NOTFOUND: 184 s = "object not found"; 185 break; 186 case DLADM_STATUS_BADVAL: 187 s = "invalid value"; 188 break; 189 case DLADM_STATUS_NOMEM: 190 s = "insufficient memory"; 191 break; 192 case DLADM_STATUS_EXIST: 193 s = "object already exists"; 194 break; 195 case DLADM_STATUS_LINKINVAL: 196 s = "invalid link"; 197 break; 198 case DLADM_STATUS_PROPRDONLY: 199 s = "read-only property"; 200 break; 201 case DLADM_STATUS_BADVALCNT: 202 s = "invalid number of values"; 203 break; 204 case DLADM_STATUS_DBNOTFOUND: 205 s = "database not found"; 206 break; 207 case DLADM_STATUS_DENIED: 208 s = "permission denied"; 209 break; 210 case DLADM_STATUS_IOERR: 211 s = "I/O error"; 212 break; 213 case DLADM_STATUS_TEMPONLY: 214 s = "change cannot be persistent"; 215 break; 216 case DLADM_STATUS_TIMEDOUT: 217 s = "operation timed out"; 218 break; 219 case DLADM_STATUS_ISCONN: 220 s = "already connected"; 221 break; 222 case DLADM_STATUS_NOTCONN: 223 s = "not connected"; 224 break; 225 case DLADM_STATUS_REPOSITORYINVAL: 226 s = "invalid configuration repository"; 227 break; 228 case DLADM_STATUS_MACADDRINVAL: 229 s = "invalid MAC address"; 230 break; 231 case DLADM_STATUS_KEYINVAL: 232 s = "invalid key"; 233 break; 234 case DLADM_STATUS_INVALIDMACADDRLEN: 235 s = "invalid MAC address length"; 236 break; 237 case DLADM_STATUS_INVALIDMACADDRTYPE: 238 s = "invalid MAC address type"; 239 break; 240 case DLADM_STATUS_LINKBUSY: 241 s = "link busy"; 242 break; 243 case DLADM_STATUS_VIDINVAL: 244 s = "invalid VLAN identifier"; 245 break; 246 case DLADM_STATUS_TRYAGAIN: 247 s = "try again later"; 248 break; 249 case DLADM_STATUS_NONOTIF: 250 s = "link notification is not supported"; 251 break; 252 case DLADM_STATUS_BADTIMEVAL: 253 s = "invalid time range"; 254 break; 255 case DLADM_STATUS_INVALIDMACADDR: 256 s = "invalid MAC address value"; 257 break; 258 case DLADM_STATUS_INVALIDMACADDRNIC: 259 s = "MAC address reserved for use by underlying data-link"; 260 break; 261 case DLADM_STATUS_INVALIDMACADDRINUSE: 262 s = "MAC address is already in use"; 263 break; 264 case DLADM_STATUS_MACFACTORYSLOTINVALID: 265 s = "invalid factory MAC address slot"; 266 break; 267 case DLADM_STATUS_MACFACTORYSLOTUSED: 268 s = "factory MAC address slot already used"; 269 break; 270 case DLADM_STATUS_MACFACTORYSLOTALLUSED: 271 s = "all factory MAC address slots are in use"; 272 break; 273 case DLADM_STATUS_MACFACTORYNOTSUP: 274 s = "factory MAC address slots not supported"; 275 break; 276 case DLADM_STATUS_INVALIDMACPREFIX: 277 s = "Invalid MAC address prefix value"; 278 break; 279 case DLADM_STATUS_INVALIDMACPREFIXLEN: 280 s = "Invalid MAC address prefix length"; 281 break; 282 case DLADM_STATUS_CPUMAX: 283 s = "non-existent processor ID"; 284 break; 285 case DLADM_STATUS_CPUERR: 286 s = "could not determine processor status"; 287 break; 288 case DLADM_STATUS_CPUNOTONLINE: 289 s = "processor not online"; 290 break; 291 case DLADM_STATUS_DB_NOTFOUND: 292 s = "database not found"; 293 break; 294 case DLADM_STATUS_DB_PARSE_ERR: 295 s = "database parse error"; 296 break; 297 case DLADM_STATUS_PROP_PARSE_ERR: 298 s = "property parse error"; 299 break; 300 case DLADM_STATUS_ATTR_PARSE_ERR: 301 s = "attribute parse error"; 302 break; 303 case DLADM_STATUS_FLOW_DB_ERR: 304 s = "flow database error"; 305 break; 306 case DLADM_STATUS_FLOW_DB_OPEN_ERR: 307 s = "flow database open error"; 308 break; 309 case DLADM_STATUS_FLOW_DB_PARSE_ERR: 310 s = "flow database parse error"; 311 break; 312 case DLADM_STATUS_FLOWPROP_DB_PARSE_ERR: 313 s = "flow property database parse error"; 314 break; 315 case DLADM_STATUS_FLOW_ADD_ERR: 316 s = "flow add error"; 317 break; 318 case DLADM_STATUS_FLOW_WALK_ERR: 319 s = "flow walk error"; 320 break; 321 case DLADM_STATUS_FLOW_IDENTICAL: 322 s = "a flow with identical attributes exists"; 323 break; 324 case DLADM_STATUS_FLOW_INCOMPATIBLE: 325 s = "flow(s) with incompatible attributes exists"; 326 break; 327 case DLADM_STATUS_FLOW_EXISTS: 328 s = "link still has flows"; 329 break; 330 case DLADM_STATUS_PERSIST_FLOW_EXISTS: 331 s = "persistent flow with the same name exists"; 332 break; 333 case DLADM_STATUS_INVALID_IP: 334 s = "invalid IP address"; 335 break; 336 case DLADM_STATUS_INVALID_PREFIXLEN: 337 s = "invalid IP prefix length"; 338 break; 339 case DLADM_STATUS_INVALID_PROTOCOL: 340 s = "invalid IP protocol"; 341 break; 342 case DLADM_STATUS_INVALID_PORT: 343 s = "invalid port number"; 344 break; 345 case DLADM_STATUS_INVALID_DSF: 346 s = "invalid dsfield"; 347 break; 348 case DLADM_STATUS_INVALID_DSFMASK: 349 s = "invalid dsfield mask"; 350 break; 351 case DLADM_STATUS_INVALID_MACMARGIN: 352 s = "MTU check failed, use lower MTU or -f option"; 353 break; 354 case DLADM_STATUS_BADPROP: 355 s = "invalid property"; 356 break; 357 case DLADM_STATUS_MINMAXBW: 358 s = "minimum value for maxbw is 1.2M"; 359 break; 360 case DLADM_STATUS_NO_HWRINGS: 361 s = "request hw rings failed"; 362 break; 363 case DLADM_STATUS_PERMONLY: 364 s = "change must be persistent"; 365 break; 366 case DLADM_STATUS_OPTMISSING: 367 s = "optional software not installed"; 368 break; 369 case DLADM_STATUS_IPTUNTYPE: 370 s = "invalid IP tunnel type"; 371 break; 372 case DLADM_STATUS_IPTUNTYPEREQD: 373 s = "IP tunnel type required"; 374 break; 375 case DLADM_STATUS_BADIPTUNLADDR: 376 s = "invalid local IP tunnel address"; 377 break; 378 case DLADM_STATUS_BADIPTUNRADDR: 379 s = "invalid remote IP tunnel address"; 380 break; 381 case DLADM_STATUS_ADDRINUSE: 382 s = "address already in use"; 383 break; 384 case DLADM_STATUS_POOLCPU: 385 s = "pool and cpus property are mutually exclusive"; 386 break; 387 case DLADM_STATUS_INVALID_PORT_INSTANCE: 388 s = "invalid IB phys link"; 389 break; 390 case DLADM_STATUS_PORT_IS_DOWN: 391 s = "port is down"; 392 break; 393 case DLADM_STATUS_PARTITION_EXISTS: 394 s = "partition already exists"; 395 break; 396 case DLADM_STATUS_PKEY_NOT_PRESENT: 397 s = "PKEY is not present on the port"; 398 break; 399 case DLADM_STATUS_INVALID_PKEY: 400 s = "invalid PKEY"; 401 break; 402 case DLADM_STATUS_NO_IB_HW_RESOURCE: 403 s = "IB internal resource not available"; 404 break; 405 case DLADM_STATUS_INVALID_PKEY_TBL_SIZE: 406 s = "invalid PKEY table size"; 407 break; 408 default: 409 s = "<unknown error>"; 410 break; 411 } 412 (void) snprintf(buf, DLADM_STRSIZE, "%s", dgettext(TEXT_DOMAIN, s)); 413 return (buf); 414 } 415 416 /* 417 * Convert a unix errno to a dladm_status_t. 418 * We only convert errnos that are likely to be encountered. All others 419 * are mapped to DLADM_STATUS_FAILED. 420 */ 421 dladm_status_t 422 dladm_errno2status(int err) 423 { 424 switch (err) { 425 case 0: 426 return (DLADM_STATUS_OK); 427 case EINVAL: 428 return (DLADM_STATUS_BADARG); 429 case EEXIST: 430 return (DLADM_STATUS_EXIST); 431 case ENOENT: 432 return (DLADM_STATUS_NOTFOUND); 433 case ENOSPC: 434 return (DLADM_STATUS_TOOSMALL); 435 case ENOMEM: 436 return (DLADM_STATUS_NOMEM); 437 case ENOTSUP: 438 return (DLADM_STATUS_NOTSUP); 439 case ENETDOWN: 440 return (DLADM_STATUS_NONOTIF); 441 case EACCES: 442 case EPERM: 443 return (DLADM_STATUS_DENIED); 444 case EIO: 445 return (DLADM_STATUS_IOERR); 446 case EBUSY: 447 return (DLADM_STATUS_LINKBUSY); 448 case EAGAIN: 449 return (DLADM_STATUS_TRYAGAIN); 450 case ENOTEMPTY: 451 return (DLADM_STATUS_FLOW_EXISTS); 452 case EOPNOTSUPP: 453 return (DLADM_STATUS_FLOW_INCOMPATIBLE); 454 case EALREADY: 455 return (DLADM_STATUS_FLOW_IDENTICAL); 456 case EADDRINUSE: 457 return (DLADM_STATUS_ADDRINUSE); 458 default: 459 return (DLADM_STATUS_FAILED); 460 } 461 } 462 463 boolean_t 464 dladm_str2interval(char *oarg, uint32_t *interval) 465 { 466 int val; 467 char *endp = NULL; 468 469 errno = 0; 470 val = strtol(oarg, &endp, 10); 471 if (errno != 0 || val <= 0 || *endp != '\0') 472 return (B_FALSE); 473 474 *interval = val; 475 476 return (B_TRUE); 477 } 478 479 dladm_status_t 480 dladm_str2bw(char *oarg, uint64_t *bw) 481 { 482 char *endp = NULL; 483 int64_t n; 484 int mult = 1; 485 486 n = strtoull(oarg, &endp, 10); 487 488 if ((errno != 0) || (strlen(endp) > 1)) 489 return (DLADM_STATUS_BADARG); 490 491 if (n < 0) 492 return (DLADM_STATUS_BADVAL); 493 494 switch (*endp) { 495 case 'k': 496 case 'K': 497 mult = 1000; 498 break; 499 case 'm': 500 case 'M': 501 case '\0': 502 mult = 1000000; 503 break; 504 case 'g': 505 case 'G': 506 mult = 1000000000; 507 break; 508 case '%': 509 /* 510 * percentages not supported for now, 511 * see RFE 6540675 512 */ 513 return (DLADM_STATUS_NOTSUP); 514 default: 515 return (DLADM_STATUS_BADVAL); 516 } 517 518 *bw = n * mult; 519 520 /* check for overflow */ 521 if (*bw / mult != n) 522 return (DLADM_STATUS_BADARG); 523 524 return (DLADM_STATUS_OK); 525 } 526 527 /* 528 * Convert bandwidth in bps to a string in mpbs. For values greater 529 * than 1mbps or 1000000, print a whole mbps value. For values that 530 * have fractional Mbps in whole Kbps , print the bandwidth in a manner 531 * simlilar to a floating point format. 532 * 533 * bps string 534 * 0 0 535 * 100 0 536 * 2000 0.002 537 * 431000 0.431 538 * 1000000 1 539 * 1030000 1.030 540 * 100000000 100 541 */ 542 const char * 543 dladm_bw2str(int64_t bw, char *buf) 544 { 545 int kbps, mbps; 546 547 kbps = (bw%1000000)/1000; 548 mbps = bw/1000000; 549 if (kbps != 0) { 550 if (mbps == 0) 551 (void) snprintf(buf, DLADM_STRSIZE, "0.%03u", kbps); 552 else 553 (void) snprintf(buf, DLADM_STRSIZE, "%5u.%03u", mbps, 554 kbps); 555 } else { 556 (void) snprintf(buf, DLADM_STRSIZE, "%5u", mbps); 557 } 558 559 return (buf); 560 } 561 562 #define LOCK_DB_PERMS S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH 563 564 static int 565 i_dladm_lock_db(const char *lock_file, short type) 566 { 567 int lock_fd; 568 struct flock lock; 569 570 if ((lock_fd = open(lock_file, O_RDWR | O_CREAT | O_TRUNC, 571 LOCK_DB_PERMS)) < 0) 572 return (-1); 573 574 lock.l_type = type; 575 lock.l_whence = SEEK_SET; 576 lock.l_start = 0; 577 lock.l_len = 0; 578 579 if (fcntl(lock_fd, F_SETLKW, &lock) < 0) { 580 int err = errno; 581 582 (void) close(lock_fd); 583 (void) unlink(lock_file); 584 errno = err; 585 return (-1); 586 } 587 return (lock_fd); 588 } 589 590 static void 591 i_dladm_unlock_db(const char *lock_file, int fd) 592 { 593 struct flock lock; 594 595 if (fd < 0) 596 return; 597 598 lock.l_type = F_UNLCK; 599 lock.l_whence = SEEK_SET; 600 lock.l_start = 0; 601 lock.l_len = 0; 602 603 (void) fcntl(fd, F_SETLKW, &lock); 604 (void) close(fd); 605 (void) unlink(lock_file); 606 } 607 608 /* 609 * Given a link class, returns its class string. 610 */ 611 const char * 612 dladm_class2str(datalink_class_t class, char *buf) 613 { 614 const char *s; 615 616 switch (class) { 617 case DATALINK_CLASS_PHYS: 618 s = "phys"; 619 break; 620 case DATALINK_CLASS_VLAN: 621 s = "vlan"; 622 break; 623 case DATALINK_CLASS_AGGR: 624 s = "aggr"; 625 break; 626 case DATALINK_CLASS_VNIC: 627 s = "vnic"; 628 break; 629 case DATALINK_CLASS_ETHERSTUB: 630 s = "etherstub"; 631 break; 632 case DATALINK_CLASS_IPTUN: 633 s = "iptun"; 634 break; 635 case DATALINK_CLASS_SIMNET: 636 s = "simnet"; 637 break; 638 case DATALINK_CLASS_BRIDGE: 639 s = "bridge"; 640 break; 641 case DATALINK_CLASS_PART: 642 s = "part"; 643 break; 644 default: 645 s = "unknown"; 646 break; 647 } 648 649 (void) snprintf(buf, DLADM_STRSIZE, "%s", s); 650 return (buf); 651 } 652 653 /* 654 * Given a physical link media type, returns its media type string. 655 */ 656 const char * 657 dladm_media2str(uint32_t media, char *buf) 658 { 659 const char *s = "--"; 660 media_type_t *mt; 661 int idx; 662 663 for (idx = 0; idx < MEDIATYPECOUNT; idx++) { 664 mt = media_type_table + idx; 665 if (mt->media_type == media) { 666 s = mt->media_type_str; 667 break; 668 } 669 } 670 671 (void) snprintf(buf, DLADM_STRSIZE, "%s", s); 672 return (buf); 673 } 674 675 /* 676 * Given a physical link media type string, returns its media type constant. 677 */ 678 uint32_t 679 dladm_str2media(const char *buf) 680 { 681 media_type_t *mt; 682 int idx; 683 684 for (idx = 0; idx < MEDIATYPECOUNT; idx++) { 685 mt = media_type_table + idx; 686 if (strcasecmp(buf, mt->media_type_str) == 0) 687 return (mt->media_type); 688 } 689 690 return (DL_OTHER); 691 } 692 693 dladm_status_t 694 i_dladm_rw_db(dladm_handle_t handle, const char *db_file, mode_t db_perms, 695 dladm_status_t (*process_db)(dladm_handle_t, void *, FILE *, FILE *), 696 void *arg, boolean_t writeop) 697 { 698 dladm_status_t status = DLADM_STATUS_OK; 699 FILE *fp, *nfp = NULL; 700 char lock[MAXPATHLEN]; 701 char file[MAXPATHLEN]; 702 char newfile[MAXPATHLEN]; 703 char *db_basename; 704 int nfd, lock_fd; 705 706 /* 707 * If we are called from a boot script such as net-physical, 708 * it's quite likely that the root fs is still not writable. 709 * For this case, it's ok for the lock creation to fail since 710 * no one else could be accessing our configuration file. 711 */ 712 db_basename = strrchr(db_file, '/'); 713 if (db_basename == NULL || db_basename[1] == '\0') 714 return (dladm_errno2status(EINVAL)); 715 db_basename++; 716 (void) snprintf(lock, MAXPATHLEN, "/tmp/%s.lock", db_basename); 717 if ((lock_fd = i_dladm_lock_db 718 (lock, (writeop ? F_WRLCK : F_RDLCK))) < 0 && errno != EROFS) 719 return (dladm_errno2status(errno)); 720 721 (void) snprintf(file, MAXPATHLEN, "%s/%s", dladm_rootdir, db_file); 722 if ((fp = fopen(file, (writeop ? "r+" : "r"))) == NULL) { 723 int err = errno; 724 725 i_dladm_unlock_db(lock, lock_fd); 726 if (err == ENOENT) 727 return (DLADM_STATUS_DBNOTFOUND); 728 729 return (dladm_errno2status(err)); 730 } 731 732 if (writeop) { 733 (void) snprintf(newfile, MAXPATHLEN, "%s/%s.new", 734 dladm_rootdir, db_file); 735 if ((nfd = open(newfile, O_WRONLY | O_CREAT | O_TRUNC, 736 db_perms)) < 0) { 737 (void) fclose(fp); 738 i_dladm_unlock_db(lock, lock_fd); 739 return (dladm_errno2status(errno)); 740 } 741 742 if ((nfp = fdopen(nfd, "w")) == NULL) { 743 (void) close(nfd); 744 (void) fclose(fp); 745 (void) unlink(newfile); 746 i_dladm_unlock_db(lock, lock_fd); 747 return (dladm_errno2status(errno)); 748 } 749 } 750 status = (*process_db)(handle, arg, fp, nfp); 751 if (!writeop || status != DLADM_STATUS_OK) 752 goto done; 753 754 /* Set permissions on file to db_perms */ 755 if (fchmod(nfd, db_perms) < 0) { 756 status = dladm_errno2status(errno); 757 goto done; 758 } 759 760 /* 761 * Configuration files need to be owned by the 'dladm' user and 762 * 'netadm' group. 763 */ 764 if (fchown(nfd, UID_DLADM, GID_NETADM) < 0) { 765 status = dladm_errno2status(errno); 766 goto done; 767 } 768 769 if (fflush(nfp) == EOF) { 770 status = dladm_errno2status(errno); 771 goto done; 772 } 773 (void) fclose(fp); 774 (void) fclose(nfp); 775 776 if (rename(newfile, file) < 0) { 777 (void) unlink(newfile); 778 i_dladm_unlock_db(lock, lock_fd); 779 return (dladm_errno2status(errno)); 780 } 781 782 i_dladm_unlock_db(lock, lock_fd); 783 return (DLADM_STATUS_OK); 784 785 done: 786 if (nfp != NULL) { 787 (void) fclose(nfp); 788 if (status != DLADM_STATUS_OK) 789 (void) unlink(newfile); 790 } 791 (void) fclose(fp); 792 i_dladm_unlock_db(lock, lock_fd); 793 return (status); 794 } 795 796 dladm_status_t 797 dladm_set_rootdir(const char *rootdir) 798 { 799 DIR *dp; 800 801 if (rootdir == NULL || *rootdir != '/' || 802 (dp = opendir(rootdir)) == NULL) 803 return (DLADM_STATUS_BADARG); 804 805 (void) strncpy(dladm_rootdir, rootdir, MAXPATHLEN); 806 (void) closedir(dp); 807 return (DLADM_STATUS_OK); 808 } 809 810 boolean_t 811 dladm_valid_linkname(const char *link) 812 { 813 size_t len = strlen(link); 814 const char *cp; 815 816 if (len >= MAXLINKNAMELEN) 817 return (B_FALSE); 818 819 /* 820 * The link name cannot start with a digit and must end with a digit. 821 */ 822 if ((isdigit(link[0]) != 0) || (isdigit(link[len - 1]) == 0)) 823 return (B_FALSE); 824 825 /* 826 * The legal characters in a link name are: 827 * alphanumeric (a-z, A-Z, 0-9), underscore ('_'), and '.'. 828 */ 829 for (cp = link; *cp != '\0'; cp++) { 830 if ((isalnum(*cp) == 0) && (*cp != '_') && (*cp != '.')) 831 return (B_FALSE); 832 } 833 834 return (B_TRUE); 835 } 836 837 /* 838 * Convert priority string to a value. 839 */ 840 dladm_status_t 841 dladm_str2pri(char *token, mac_priority_level_t *pri) 842 { 843 if (strlen(token) == strlen("low") && 844 strncasecmp(token, "low", strlen("low")) == 0) { 845 *pri = MPL_LOW; 846 } else if (strlen(token) == strlen("medium") && 847 strncasecmp(token, "medium", strlen("medium")) == 0) { 848 *pri = MPL_MEDIUM; 849 } else if (strlen(token) == strlen("high") && 850 strncasecmp(token, "high", strlen("high")) == 0) { 851 *pri = MPL_HIGH; 852 } else { 853 return (DLADM_STATUS_BADVAL); 854 } 855 return (DLADM_STATUS_OK); 856 } 857 858 /* 859 * Convert priority value to a string. 860 */ 861 const char * 862 dladm_pri2str(mac_priority_level_t pri, char *buf) 863 { 864 const char *s; 865 866 switch (pri) { 867 case MPL_LOW: 868 s = "low"; 869 break; 870 case MPL_MEDIUM: 871 s = "medium"; 872 break; 873 case MPL_HIGH: 874 s = "high"; 875 break; 876 default: 877 s = "--"; 878 break; 879 } 880 (void) snprintf(buf, DLADM_STRSIZE, "%s", dgettext(TEXT_DOMAIN, s)); 881 return (buf); 882 } 883 884 /* 885 * Convert protect string to a value. 886 */ 887 dladm_status_t 888 dladm_str2protect(char *token, uint32_t *ptype) 889 { 890 link_protect_t *lp; 891 int i; 892 893 for (i = 0; i < LPTYPES; i++) { 894 lp = &link_protect_types[i]; 895 if (strcmp(token, lp->lp_name) == 0) { 896 *ptype = lp->lp_type; 897 return (DLADM_STATUS_OK); 898 } 899 } 900 return (DLADM_STATUS_BADVAL); 901 } 902 903 /* 904 * Convert protect value to a string. 905 */ 906 const char * 907 dladm_protect2str(uint32_t ptype, char *buf) 908 { 909 const char *s = "--"; 910 link_protect_t *lp; 911 int i; 912 913 for (i = 0; i < LPTYPES; i++) { 914 lp = &link_protect_types[i]; 915 if (lp->lp_type == ptype) { 916 s = lp->lp_name; 917 break; 918 } 919 } 920 (void) snprintf(buf, DLADM_STRSIZE, "%s", dgettext(TEXT_DOMAIN, s)); 921 return (buf); 922 } 923 924 /* 925 * Convert an IPv4 address to/from a string. 926 */ 927 const char * 928 dladm_ipv4addr2str(void *addr, char *buf) 929 { 930 if (inet_ntop(AF_INET, addr, buf, INET_ADDRSTRLEN) == NULL) 931 buf[0] = '\0'; 932 933 return (buf); 934 } 935 936 dladm_status_t 937 dladm_str2ipv4addr(char *token, void *addr) 938 { 939 return (inet_pton(AF_INET, token, addr) == 1 ? 940 DLADM_STATUS_OK : DLADM_STATUS_INVALID_IP); 941 } 942 943 const char * 944 dladm_ipv6addr2str(void *addr, char *buf) 945 { 946 if (inet_ntop(AF_INET6, addr, buf, INET6_ADDRSTRLEN) == NULL) 947 buf[0] = '\0'; 948 949 return (buf); 950 } 951 952 dladm_status_t 953 dladm_str2ipv6addr(char *token, void *addr) 954 { 955 return (inet_pton(AF_INET6, token, addr) == 1 ? 956 DLADM_STATUS_OK : DLADM_STATUS_INVALID_IP); 957 } 958 959 /* 960 * Find the set bits in a mask. 961 * This is used for expanding a bitmask into individual sub-masks 962 * which can be used for further processing. 963 */ 964 void 965 dladm_find_setbits32(uint32_t mask, uint32_t *list, uint32_t *cnt) 966 { 967 int i, c = 0; 968 969 for (i = 0; i < 32; i++) { 970 if (((1 << i) & mask) != 0) 971 list[c++] = 1 << i; 972 } 973 *cnt = c; 974 } 975 976 void 977 dladm_free_args(dladm_arg_list_t *list) 978 { 979 if (list != NULL) { 980 free(list->al_buf); 981 free(list); 982 } 983 } 984 985 dladm_status_t 986 dladm_parse_args(char *str, dladm_arg_list_t **listp, boolean_t novalues) 987 { 988 dladm_arg_list_t *list; 989 dladm_arg_info_t *aip; 990 char *buf, *curr; 991 int len, i; 992 993 if (str == NULL) 994 return (DLADM_STATUS_BADVAL); 995 996 if (str[0] == '\0') 997 return (DLADM_STATUS_OK); 998 999 list = malloc(sizeof (dladm_arg_list_t)); 1000 if (list == NULL) 1001 return (dladm_errno2status(errno)); 1002 1003 list->al_count = 0; 1004 list->al_buf = buf = strdup(str); 1005 if (buf == NULL) 1006 return (dladm_errno2status(errno)); 1007 1008 curr = buf; 1009 len = strlen(buf); 1010 aip = NULL; 1011 for (i = 0; i < len; i++) { 1012 char c = buf[i]; 1013 boolean_t match = (c == '=' || c == ','); 1014 1015 if (!match && i != len - 1) 1016 continue; 1017 1018 if (match) { 1019 buf[i] = '\0'; 1020 if (*curr == '\0') 1021 goto fail; 1022 } 1023 1024 if (aip != NULL && c != '=') { 1025 if (aip->ai_count > DLADM_MAX_ARG_VALS) 1026 goto fail; 1027 1028 if (novalues) 1029 goto fail; 1030 1031 aip->ai_val[aip->ai_count] = curr; 1032 aip->ai_count++; 1033 } else { 1034 if (list->al_count > DLADM_MAX_ARG_VALS) 1035 goto fail; 1036 1037 aip = &list->al_info[list->al_count]; 1038 aip->ai_name = curr; 1039 aip->ai_count = 0; 1040 list->al_count++; 1041 if (c == ',') 1042 aip = NULL; 1043 } 1044 curr = buf + i + 1; 1045 } 1046 1047 *listp = list; 1048 return (DLADM_STATUS_OK); 1049 1050 fail: 1051 dladm_free_args(list); 1052 return (DLADM_STATUS_FAILED); 1053 } 1054