1 /* $NetBSD: meta.c,v 1.41 2015/11/30 23:37:56 sjg Exp $ */ 2 3 /* 4 * Implement 'meta' mode. 5 * Adapted from John Birrell's patches to FreeBSD make. 6 * --sjg 7 */ 8 /* 9 * Copyright (c) 2009-2010, Juniper Networks, Inc. 10 * Portions Copyright (c) 2009, John Birrell. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 #if defined(USE_META) 34 35 #ifdef HAVE_CONFIG_H 36 # include "config.h" 37 #endif 38 #include <sys/stat.h> 39 #include <sys/ioctl.h> 40 #include <fcntl.h> 41 #ifdef HAVE_LIBGEN_H 42 #include <libgen.h> 43 #elif !defined(HAVE_DIRNAME) 44 char * dirname(char *); 45 #endif 46 #include <errno.h> 47 #if !defined(HAVE_CONFIG_H) || defined(HAVE_ERR_H) 48 #include <err.h> 49 #endif 50 51 #include "make.h" 52 #include "job.h" 53 54 #ifdef HAVE_FILEMON_H 55 # include <filemon.h> 56 #endif 57 #if !defined(USE_FILEMON) && defined(FILEMON_SET_FD) 58 # define USE_FILEMON 59 #endif 60 61 static BuildMon Mybm; /* for compat */ 62 static Lst metaBailiwick; /* our scope of control */ 63 static Lst metaIgnorePaths; /* paths we deliberately ignore */ 64 65 #ifndef MAKE_META_IGNORE_PATHS 66 #define MAKE_META_IGNORE_PATHS ".MAKE.META.IGNORE_PATHS" 67 #endif 68 69 Boolean useMeta = FALSE; 70 static Boolean useFilemon = FALSE; 71 static Boolean writeMeta = FALSE; 72 static Boolean metaEnv = FALSE; /* don't save env unless asked */ 73 static Boolean metaVerbose = FALSE; 74 static Boolean metaIgnoreCMDs = FALSE; /* ignore CMDs in .meta files */ 75 static Boolean metaCurdirOk = FALSE; /* write .meta in .CURDIR Ok? */ 76 static Boolean metaSilent = FALSE; /* if we have a .meta be SILENT */ 77 78 extern Boolean forceJobs; 79 extern Boolean comatMake; 80 extern char **environ; 81 82 #define MAKE_META_PREFIX ".MAKE.META.PREFIX" 83 84 #ifndef N2U 85 # define N2U(n, u) (((n) + ((u) - 1)) / (u)) 86 #endif 87 #ifndef ROUNDUP 88 # define ROUNDUP(n, u) (N2U((n), (u)) * (u)) 89 #endif 90 91 #if !defined(HAVE_STRSEP) 92 # define strsep(s, d) stresep((s), (d), 0) 93 #endif 94 95 /* 96 * Filemon is a kernel module which snoops certain syscalls. 97 * 98 * C chdir 99 * E exec 100 * F [v]fork 101 * L [sym]link 102 * M rename 103 * R read 104 * W write 105 * S stat 106 * 107 * See meta_oodate below - we mainly care about 'E' and 'R'. 108 * 109 * We can still use meta mode without filemon, but 110 * the benefits are more limited. 111 */ 112 #ifdef USE_FILEMON 113 # ifndef _PATH_FILEMON 114 # define _PATH_FILEMON "/dev/filemon" 115 # endif 116 117 /* 118 * Open the filemon device. 119 */ 120 static void 121 filemon_open(BuildMon *pbm) 122 { 123 int retry; 124 125 pbm->mon_fd = pbm->filemon_fd = -1; 126 if (!useFilemon) 127 return; 128 129 for (retry = 5; retry >= 0; retry--) { 130 if ((pbm->filemon_fd = open(_PATH_FILEMON, O_RDWR)) >= 0) 131 break; 132 } 133 134 if (pbm->filemon_fd < 0) { 135 useFilemon = FALSE; 136 warn("Could not open %s", _PATH_FILEMON); 137 return; 138 } 139 140 /* 141 * We use a file outside of '.' 142 * to avoid a FreeBSD kernel bug where unlink invalidates 143 * cwd causing getcwd to do a lot more work. 144 * We only care about the descriptor. 145 */ 146 pbm->mon_fd = mkTempFile("filemon.XXXXXX", NULL); 147 if (ioctl(pbm->filemon_fd, FILEMON_SET_FD, &pbm->mon_fd) < 0) { 148 err(1, "Could not set filemon file descriptor!"); 149 } 150 /* we don't need these once we exec */ 151 (void)fcntl(pbm->mon_fd, F_SETFD, 1); 152 (void)fcntl(pbm->filemon_fd, F_SETFD, 1); 153 } 154 155 /* 156 * Read the build monitor output file and write records to the target's 157 * metadata file. 158 */ 159 static void 160 filemon_read(FILE *mfp, int fd) 161 { 162 char buf[BUFSIZ]; 163 int n; 164 165 /* Check if we're not writing to a meta data file.*/ 166 if (mfp == NULL) { 167 if (fd >= 0) 168 close(fd); /* not interested */ 169 return; 170 } 171 /* rewind */ 172 (void)lseek(fd, (off_t)0, SEEK_SET); 173 174 fprintf(mfp, "\n-- filemon acquired metadata --\n"); 175 176 while ((n = read(fd, buf, sizeof(buf))) > 0) { 177 fwrite(buf, 1, n, mfp); 178 } 179 fflush(mfp); 180 close(fd); 181 } 182 #endif 183 184 /* 185 * when realpath() fails, 186 * we use this, to clean up ./ and ../ 187 */ 188 static void 189 eat_dots(char *buf, size_t bufsz, int dots) 190 { 191 char *cp; 192 char *cp2; 193 const char *eat; 194 size_t eatlen; 195 196 switch (dots) { 197 case 1: 198 eat = "/./"; 199 eatlen = 2; 200 break; 201 case 2: 202 eat = "/../"; 203 eatlen = 3; 204 break; 205 default: 206 return; 207 } 208 209 do { 210 cp = strstr(buf, eat); 211 if (cp) { 212 cp2 = cp + eatlen; 213 if (dots == 2 && cp > buf) { 214 do { 215 cp--; 216 } while (cp > buf && *cp != '/'); 217 } 218 if (*cp == '/') { 219 strlcpy(cp, cp2, bufsz - (cp - buf)); 220 } else { 221 return; /* can't happen? */ 222 } 223 } 224 } while (cp); 225 } 226 227 static char * 228 meta_name(struct GNode *gn, char *mname, size_t mnamelen, 229 const char *dname, 230 const char *tname) 231 { 232 char buf[MAXPATHLEN]; 233 char cwd[MAXPATHLEN]; 234 char *rp; 235 char *cp; 236 char *tp; 237 char *p[4]; /* >= number of possible uses */ 238 int i; 239 240 i = 0; 241 if (!dname) 242 dname = Var_Value(".OBJDIR", gn, &p[i++]); 243 if (!tname) 244 tname = Var_Value(TARGET, gn, &p[i++]); 245 246 if (realpath(dname, cwd)) 247 dname = cwd; 248 249 /* 250 * Weed out relative paths from the target file name. 251 * We have to be careful though since if target is a 252 * symlink, the result will be unstable. 253 * So we use realpath() just to get the dirname, and leave the 254 * basename as given to us. 255 */ 256 if ((cp = strrchr(tname, '/'))) { 257 if (realpath(tname, buf)) { 258 if ((rp = strrchr(buf, '/'))) { 259 rp++; 260 cp++; 261 if (strcmp(cp, rp) != 0) 262 strlcpy(rp, cp, sizeof(buf) - (rp - buf)); 263 } 264 tname = buf; 265 } else { 266 /* 267 * We likely have a directory which is about to be made. 268 * We pretend realpath() succeeded, to have a chance 269 * of generating the same meta file name that we will 270 * next time through. 271 */ 272 if (tname[0] == '/') { 273 strlcpy(buf, tname, sizeof(buf)); 274 } else { 275 snprintf(buf, sizeof(buf), "%s/%s", cwd, tname); 276 } 277 eat_dots(buf, sizeof(buf), 1); /* ./ */ 278 eat_dots(buf, sizeof(buf), 2); /* ../ */ 279 tname = buf; 280 } 281 } 282 /* on some systems dirname may modify its arg */ 283 tp = bmake_strdup(tname); 284 if (strcmp(dname, dirname(tp)) == 0) 285 snprintf(mname, mnamelen, "%s.meta", tname); 286 else { 287 snprintf(mname, mnamelen, "%s/%s.meta", dname, tname); 288 289 /* 290 * Replace path separators in the file name after the 291 * current object directory path. 292 */ 293 cp = mname + strlen(dname) + 1; 294 295 while (*cp != '\0') { 296 if (*cp == '/') 297 *cp = '_'; 298 cp++; 299 } 300 } 301 free(tp); 302 for (i--; i >= 0; i--) { 303 if (p[i]) 304 free(p[i]); 305 } 306 return (mname); 307 } 308 309 /* 310 * Return true if running ${.MAKE} 311 * Bypassed if target is flagged .MAKE 312 */ 313 static int 314 is_submake(void *cmdp, void *gnp) 315 { 316 static char *p_make = NULL; 317 static int p_len; 318 char *cmd = cmdp; 319 GNode *gn = gnp; 320 char *mp = NULL; 321 char *cp; 322 char *cp2; 323 int rc = 0; /* keep looking */ 324 325 if (!p_make) { 326 p_make = Var_Value(".MAKE", gn, &cp); 327 p_len = strlen(p_make); 328 } 329 cp = strchr(cmd, '$'); 330 if ((cp)) { 331 mp = Var_Subst(NULL, cmd, gn, FALSE, TRUE); 332 cmd = mp; 333 } 334 cp2 = strstr(cmd, p_make); 335 if ((cp2)) { 336 switch (cp2[p_len]) { 337 case '\0': 338 case ' ': 339 case '\t': 340 case '\n': 341 rc = 1; 342 break; 343 } 344 if (cp2 > cmd && rc > 0) { 345 switch (cp2[-1]) { 346 case ' ': 347 case '\t': 348 case '\n': 349 break; 350 default: 351 rc = 0; /* no match */ 352 break; 353 } 354 } 355 } 356 if (mp) 357 free(mp); 358 return (rc); 359 } 360 361 typedef struct meta_file_s { 362 FILE *fp; 363 GNode *gn; 364 } meta_file_t; 365 366 static int 367 printCMD(void *cmdp, void *mfpp) 368 { 369 meta_file_t *mfp = mfpp; 370 char *cmd = cmdp; 371 char *cp = NULL; 372 373 if (strchr(cmd, '$')) { 374 cmd = cp = Var_Subst(NULL, cmd, mfp->gn, FALSE, TRUE); 375 } 376 fprintf(mfp->fp, "CMD %s\n", cmd); 377 if (cp) 378 free(cp); 379 return 0; 380 } 381 382 /* 383 * Certain node types never get a .meta file 384 */ 385 #define SKIP_META_TYPE(_type) do { \ 386 if ((gn->type & __CONCAT(OP_, _type))) { \ 387 if (DEBUG(META)) { \ 388 fprintf(debug_file, "Skipping meta for %s: .%s\n", \ 389 gn->name, __STRING(_type)); \ 390 } \ 391 return (NULL); \ 392 } \ 393 } while (0) 394 395 static FILE * 396 meta_create(BuildMon *pbm, GNode *gn) 397 { 398 meta_file_t mf; 399 char buf[MAXPATHLEN]; 400 char objdir[MAXPATHLEN]; 401 char **ptr; 402 const char *dname; 403 const char *tname; 404 char *fname; 405 const char *cp; 406 char *p[4]; /* >= possible uses */ 407 int i; 408 struct stat fs; 409 410 411 /* This may be a phony node which we don't want meta data for... */ 412 /* Skip .meta for .BEGIN, .END, .ERROR etc as well. */ 413 /* Or it may be explicitly flagged as .NOMETA */ 414 SKIP_META_TYPE(NOMETA); 415 /* Unless it is explicitly flagged as .META */ 416 if (!(gn->type & OP_META)) { 417 SKIP_META_TYPE(PHONY); 418 SKIP_META_TYPE(SPECIAL); 419 SKIP_META_TYPE(MAKE); 420 } 421 422 mf.fp = NULL; 423 424 i = 0; 425 426 dname = Var_Value(".OBJDIR", gn, &p[i++]); 427 tname = Var_Value(TARGET, gn, &p[i++]); 428 429 /* The object directory may not exist. Check it.. */ 430 if (stat(dname, &fs) != 0) { 431 if (DEBUG(META)) 432 fprintf(debug_file, "Skipping meta for %s: no .OBJDIR\n", 433 gn->name); 434 goto out; 435 } 436 /* Check if there are no commands to execute. */ 437 if (Lst_IsEmpty(gn->commands)) { 438 if (DEBUG(META)) 439 fprintf(debug_file, "Skipping meta for %s: no commands\n", 440 gn->name); 441 goto out; 442 } 443 444 /* make sure these are canonical */ 445 if (realpath(dname, objdir)) 446 dname = objdir; 447 448 /* If we aren't in the object directory, don't create a meta file. */ 449 if (!metaCurdirOk && strcmp(curdir, dname) == 0) { 450 if (DEBUG(META)) 451 fprintf(debug_file, "Skipping meta for %s: .OBJDIR == .CURDIR\n", 452 gn->name); 453 goto out; 454 } 455 if (!(gn->type & OP_META)) { 456 /* We do not generate .meta files for sub-makes */ 457 if (Lst_ForEach(gn->commands, is_submake, gn)) { 458 if (DEBUG(META)) 459 fprintf(debug_file, "Skipping meta for %s: .MAKE\n", 460 gn->name); 461 goto out; 462 } 463 } 464 465 if (metaVerbose) { 466 char *mp; 467 468 /* Describe the target we are building */ 469 mp = Var_Subst(NULL, "${" MAKE_META_PREFIX "}", gn, FALSE, TRUE); 470 if (*mp) 471 fprintf(stdout, "%s\n", mp); 472 free(mp); 473 } 474 /* Get the basename of the target */ 475 if ((cp = strrchr(tname, '/')) == NULL) { 476 cp = tname; 477 } else { 478 cp++; 479 } 480 481 fflush(stdout); 482 483 if (strcmp(cp, makeDependfile) == 0) 484 goto out; 485 486 if (!writeMeta) 487 /* Don't create meta data. */ 488 goto out; 489 490 fname = meta_name(gn, pbm->meta_fname, sizeof(pbm->meta_fname), 491 dname, tname); 492 493 #ifdef DEBUG_META_MODE 494 if (DEBUG(META)) 495 fprintf(debug_file, "meta_create: %s\n", fname); 496 #endif 497 498 if ((mf.fp = fopen(fname, "w")) == NULL) 499 err(1, "Could not open meta file '%s'", fname); 500 501 fprintf(mf.fp, "# Meta data file %s\n", fname); 502 503 mf.gn = gn; 504 505 Lst_ForEach(gn->commands, printCMD, &mf); 506 507 fprintf(mf.fp, "CWD %s\n", getcwd(buf, sizeof(buf))); 508 fprintf(mf.fp, "TARGET %s\n", tname); 509 510 if (metaEnv) { 511 for (ptr = environ; *ptr != NULL; ptr++) 512 fprintf(mf.fp, "ENV %s\n", *ptr); 513 } 514 515 fprintf(mf.fp, "-- command output --\n"); 516 fflush(mf.fp); 517 518 Var_Append(".MAKE.META.FILES", fname, VAR_GLOBAL); 519 Var_Append(".MAKE.META.CREATED", fname, VAR_GLOBAL); 520 521 gn->type |= OP_META; /* in case anyone wants to know */ 522 if (metaSilent) { 523 gn->type |= OP_SILENT; 524 } 525 out: 526 for (i--; i >= 0; i--) { 527 if (p[i]) 528 free(p[i]); 529 } 530 531 return (mf.fp); 532 } 533 534 static Boolean 535 boolValue(char *s) 536 { 537 switch(*s) { 538 case '0': 539 case 'N': 540 case 'n': 541 case 'F': 542 case 'f': 543 return FALSE; 544 } 545 return TRUE; 546 } 547 548 /* 549 * Initialization we need before reading makefiles. 550 */ 551 void 552 meta_init(void) 553 { 554 #ifdef USE_FILEMON 555 /* this allows makefiles to test if we have filemon support */ 556 Var_Set(".MAKE.PATH_FILEMON", _PATH_FILEMON, VAR_GLOBAL, 0); 557 #endif 558 } 559 560 561 /* 562 * Initialization we need after reading makefiles. 563 */ 564 void 565 meta_mode_init(const char *make_mode) 566 { 567 static int once = 0; 568 char *cp; 569 570 useMeta = TRUE; 571 useFilemon = TRUE; 572 writeMeta = TRUE; 573 574 if (make_mode) { 575 if (strstr(make_mode, "env")) 576 metaEnv = TRUE; 577 if (strstr(make_mode, "verb")) 578 metaVerbose = TRUE; 579 if (strstr(make_mode, "read")) 580 writeMeta = FALSE; 581 if (strstr(make_mode, "nofilemon")) 582 useFilemon = FALSE; 583 if ((cp = strstr(make_mode, "curdirok="))) { 584 metaCurdirOk = boolValue(&cp[9]); 585 } 586 if ((cp = strstr(make_mode, "silent="))) { 587 metaSilent = boolValue(&cp[7]); 588 } 589 if (strstr(make_mode, "ignore-cmd")) 590 metaIgnoreCMDs = TRUE; 591 /* for backwards compatability */ 592 Var_Set(".MAKE.META_CREATED", "${.MAKE.META.CREATED}", VAR_GLOBAL, 0); 593 Var_Set(".MAKE.META_FILES", "${.MAKE.META.FILES}", VAR_GLOBAL, 0); 594 } 595 if (metaVerbose && !Var_Exists(MAKE_META_PREFIX, VAR_GLOBAL)) { 596 /* 597 * The default value for MAKE_META_PREFIX 598 * prints the absolute path of the target. 599 * This works be cause :H will generate '.' if there is no / 600 * and :tA will resolve that to cwd. 601 */ 602 Var_Set(MAKE_META_PREFIX, "Building ${.TARGET:H:tA}/${.TARGET:T}", VAR_GLOBAL, 0); 603 } 604 if (once) 605 return; 606 once = 1; 607 memset(&Mybm, 0, sizeof(Mybm)); 608 /* 609 * We consider ourselves master of all within ${.MAKE.META.BAILIWICK} 610 */ 611 metaBailiwick = Lst_Init(FALSE); 612 cp = Var_Subst(NULL, "${.MAKE.META.BAILIWICK:O:u:tA}", VAR_GLOBAL, 613 FALSE, TRUE); 614 if (cp) { 615 str2Lst_Append(metaBailiwick, cp, NULL); 616 } 617 /* 618 * We ignore any paths that start with ${.MAKE.META.IGNORE_PATHS} 619 */ 620 metaIgnorePaths = Lst_Init(FALSE); 621 Var_Append(MAKE_META_IGNORE_PATHS, 622 "/dev /etc /proc /tmp /var/run /var/tmp ${TMPDIR}", VAR_GLOBAL); 623 cp = Var_Subst(NULL, 624 "${" MAKE_META_IGNORE_PATHS ":O:u:tA}", VAR_GLOBAL, 625 FALSE, TRUE); 626 if (cp) { 627 str2Lst_Append(metaIgnorePaths, cp, NULL); 628 } 629 } 630 631 /* 632 * In each case below we allow for job==NULL 633 */ 634 void 635 meta_job_start(Job *job, GNode *gn) 636 { 637 BuildMon *pbm; 638 639 if (job != NULL) { 640 pbm = &job->bm; 641 } else { 642 pbm = &Mybm; 643 } 644 pbm->mfp = meta_create(pbm, gn); 645 #ifdef USE_FILEMON_ONCE 646 /* compat mode we open the filemon dev once per command */ 647 if (job == NULL) 648 return; 649 #endif 650 #ifdef USE_FILEMON 651 if (pbm->mfp != NULL && useFilemon) { 652 filemon_open(pbm); 653 } else { 654 pbm->mon_fd = pbm->filemon_fd = -1; 655 } 656 #endif 657 } 658 659 /* 660 * The child calls this before doing anything. 661 * It does not disturb our state. 662 */ 663 void 664 meta_job_child(Job *job) 665 { 666 #ifdef USE_FILEMON 667 BuildMon *pbm; 668 669 if (job != NULL) { 670 pbm = &job->bm; 671 } else { 672 pbm = &Mybm; 673 } 674 if (pbm->mfp != NULL) { 675 close(fileno(pbm->mfp)); 676 if (useFilemon) { 677 pid_t pid; 678 679 pid = getpid(); 680 if (ioctl(pbm->filemon_fd, FILEMON_SET_PID, &pid) < 0) { 681 err(1, "Could not set filemon pid!"); 682 } 683 } 684 } 685 #endif 686 } 687 688 void 689 meta_job_error(Job *job, GNode *gn, int flags, int status) 690 { 691 char cwd[MAXPATHLEN]; 692 BuildMon *pbm; 693 694 if (job != NULL) { 695 pbm = &job->bm; 696 } else { 697 if (!gn) 698 gn = job->node; 699 pbm = &Mybm; 700 } 701 if (pbm->mfp != NULL) { 702 fprintf(pbm->mfp, "*** Error code %d%s\n", 703 status, 704 (flags & JOB_IGNERR) ? 705 "(ignored)" : ""); 706 } 707 if (gn) { 708 Var_Set(".ERROR_TARGET", gn->path ? gn->path : gn->name, VAR_GLOBAL, 0); 709 } 710 getcwd(cwd, sizeof(cwd)); 711 Var_Set(".ERROR_CWD", cwd, VAR_GLOBAL, 0); 712 if (pbm && pbm->meta_fname[0]) { 713 Var_Set(".ERROR_META_FILE", pbm->meta_fname, VAR_GLOBAL, 0); 714 } 715 meta_job_finish(job); 716 } 717 718 void 719 meta_job_output(Job *job, char *cp, const char *nl) 720 { 721 BuildMon *pbm; 722 723 if (job != NULL) { 724 pbm = &job->bm; 725 } else { 726 pbm = &Mybm; 727 } 728 if (pbm->mfp != NULL) { 729 if (metaVerbose) { 730 static char *meta_prefix = NULL; 731 static int meta_prefix_len; 732 733 if (!meta_prefix) { 734 char *cp2; 735 736 meta_prefix = Var_Subst(NULL, "${" MAKE_META_PREFIX "}", 737 VAR_GLOBAL, FALSE, TRUE); 738 if ((cp2 = strchr(meta_prefix, '$'))) 739 meta_prefix_len = cp2 - meta_prefix; 740 else 741 meta_prefix_len = strlen(meta_prefix); 742 } 743 if (strncmp(cp, meta_prefix, meta_prefix_len) == 0) { 744 cp = strchr(cp+1, '\n'); 745 if (!cp++) 746 return; 747 } 748 } 749 fprintf(pbm->mfp, "%s%s", cp, nl); 750 } 751 } 752 753 void 754 meta_cmd_finish(void *pbmp) 755 { 756 #ifdef USE_FILEMON 757 BuildMon *pbm = pbmp; 758 759 if (!pbm) 760 pbm = &Mybm; 761 762 if (pbm->filemon_fd >= 0) { 763 close(pbm->filemon_fd); 764 filemon_read(pbm->mfp, pbm->mon_fd); 765 pbm->filemon_fd = pbm->mon_fd = -1; 766 } 767 #endif 768 } 769 770 void 771 meta_job_finish(Job *job) 772 { 773 BuildMon *pbm; 774 775 if (job != NULL) { 776 pbm = &job->bm; 777 } else { 778 pbm = &Mybm; 779 } 780 if (pbm->mfp != NULL) { 781 meta_cmd_finish(pbm); 782 fclose(pbm->mfp); 783 pbm->mfp = NULL; 784 pbm->meta_fname[0] = '\0'; 785 } 786 } 787 788 /* 789 * Fetch a full line from fp - growing bufp if needed 790 * Return length in bufp. 791 */ 792 static int 793 fgetLine(char **bufp, size_t *szp, int o, FILE *fp) 794 { 795 char *buf = *bufp; 796 size_t bufsz = *szp; 797 struct stat fs; 798 int x; 799 800 if (fgets(&buf[o], bufsz - o, fp) != NULL) { 801 check_newline: 802 x = o + strlen(&buf[o]); 803 if (buf[x - 1] == '\n') 804 return x; 805 /* 806 * We need to grow the buffer. 807 * The meta file can give us a clue. 808 */ 809 if (fstat(fileno(fp), &fs) == 0) { 810 size_t newsz; 811 char *p; 812 813 newsz = ROUNDUP((fs.st_size / 2), BUFSIZ); 814 if (newsz <= bufsz) 815 newsz = ROUNDUP(fs.st_size, BUFSIZ); 816 if (DEBUG(META)) 817 fprintf(debug_file, "growing buffer %u -> %u\n", 818 (unsigned)bufsz, (unsigned)newsz); 819 p = bmake_realloc(buf, newsz); 820 if (p) { 821 *bufp = buf = p; 822 *szp = bufsz = newsz; 823 /* fetch the rest */ 824 if (!fgets(&buf[x], bufsz - x, fp)) 825 return x; /* truncated! */ 826 goto check_newline; 827 } 828 } 829 } 830 return 0; 831 } 832 833 static int 834 prefix_match(void *p, void *q) 835 { 836 const char *prefix = p; 837 const char *path = q; 838 size_t n = strlen(prefix); 839 840 return (0 == strncmp(path, prefix, n)); 841 } 842 843 static int 844 string_match(const void *p, const void *q) 845 { 846 const char *p1 = p; 847 const char *p2 = q; 848 849 return strcmp(p1, p2); 850 } 851 852 853 /* 854 * When running with 'meta' functionality, a target can be out-of-date 855 * if any of the references in its meta data file is more recent. 856 * We have to track the latestdir on a per-process basis. 857 */ 858 #define LCWD_VNAME_FMT ".meta.%d.lcwd" 859 #define LDIR_VNAME_FMT ".meta.%d.ldir" 860 861 /* 862 * It is possible that a .meta file is corrupted, 863 * if we detect this we want to reproduce it. 864 * Setting oodate TRUE will have that effect. 865 */ 866 #define CHECK_VALID_META(p) if (!(p && *p)) { \ 867 warnx("%s: %d: malformed", fname, lineno); \ 868 oodate = TRUE; \ 869 continue; \ 870 } 871 872 #define DEQUOTE(p) if (*p == '\'') { \ 873 char *ep; \ 874 p++; \ 875 if ((ep = strchr(p, '\''))) \ 876 *ep = '\0'; \ 877 } 878 879 Boolean 880 meta_oodate(GNode *gn, Boolean oodate) 881 { 882 static char *tmpdir = NULL; 883 static char cwd[MAXPATHLEN]; 884 char lcwd_vname[64]; 885 char ldir_vname[64]; 886 char lcwd[MAXPATHLEN]; 887 char latestdir[MAXPATHLEN]; 888 char fname[MAXPATHLEN]; 889 char fname1[MAXPATHLEN]; 890 char fname2[MAXPATHLEN]; 891 char fname3[MAXPATHLEN]; 892 char *p; 893 char *cp; 894 char *link_src; 895 char *move_target; 896 static size_t cwdlen = 0; 897 static size_t tmplen = 0; 898 FILE *fp; 899 Boolean needOODATE = FALSE; 900 Lst missingFiles; 901 902 if (oodate) 903 return oodate; /* we're done */ 904 905 missingFiles = Lst_Init(FALSE); 906 907 /* 908 * We need to check if the target is out-of-date. This includes 909 * checking if the expanded command has changed. This in turn 910 * requires that all variables are set in the same way that they 911 * would be if the target needs to be re-built. 912 */ 913 Make_DoAllVar(gn); 914 915 meta_name(gn, fname, sizeof(fname), NULL, NULL); 916 917 #ifdef DEBUG_META_MODE 918 if (DEBUG(META)) 919 fprintf(debug_file, "meta_oodate: %s\n", fname); 920 #endif 921 922 if ((fp = fopen(fname, "r")) != NULL) { 923 static char *buf = NULL; 924 static size_t bufsz; 925 int lineno = 0; 926 int lastpid = 0; 927 int pid; 928 int f = 0; 929 int x; 930 LstNode ln; 931 struct stat fs; 932 933 if (!buf) { 934 bufsz = 8 * BUFSIZ; 935 buf = bmake_malloc(bufsz); 936 } 937 938 if (!cwdlen) { 939 if (getcwd(cwd, sizeof(cwd)) == NULL) 940 err(1, "Could not get current working directory"); 941 cwdlen = strlen(cwd); 942 } 943 strlcpy(lcwd, cwd, sizeof(lcwd)); 944 strlcpy(latestdir, cwd, sizeof(latestdir)); 945 946 if (!tmpdir) { 947 tmpdir = getTmpdir(); 948 tmplen = strlen(tmpdir); 949 } 950 951 /* we want to track all the .meta we read */ 952 Var_Append(".MAKE.META.FILES", fname, VAR_GLOBAL); 953 954 ln = Lst_First(gn->commands); 955 while (!oodate && (x = fgetLine(&buf, &bufsz, 0, fp)) > 0) { 956 lineno++; 957 if (buf[x - 1] == '\n') 958 buf[x - 1] = '\0'; 959 else { 960 warnx("%s: %d: line truncated at %u", fname, lineno, x); 961 oodate = TRUE; 962 break; 963 } 964 link_src = NULL; 965 move_target = NULL; 966 /* Find the start of the build monitor section. */ 967 if (!f) { 968 if (strncmp(buf, "-- filemon", 10) == 0) { 969 f = 1; 970 continue; 971 } 972 if (strncmp(buf, "# buildmon", 10) == 0) { 973 f = 1; 974 continue; 975 } 976 } 977 978 /* Delimit the record type. */ 979 p = buf; 980 #ifdef DEBUG_META_MODE 981 if (DEBUG(META)) 982 fprintf(debug_file, "%s: %d: %s\n", fname, lineno, buf); 983 #endif 984 strsep(&p, " "); 985 if (f) { 986 /* 987 * We are in the 'filemon' output section. 988 * Each record from filemon follows the general form: 989 * 990 * <key> <pid> <data> 991 * 992 * Where: 993 * <key> is a single letter, denoting the syscall. 994 * <pid> is the process that made the syscall. 995 * <data> is the arguments (of interest). 996 */ 997 switch(buf[0]) { 998 case '#': /* comment */ 999 case 'V': /* version */ 1000 break; 1001 default: 1002 /* 1003 * We need to track pathnames per-process. 1004 * 1005 * Each process run by make, starts off in the 'CWD' 1006 * recorded in the .meta file, if it chdirs ('C') 1007 * elsewhere we need to track that - but only for 1008 * that process. If it forks ('F'), we initialize 1009 * the child to have the same cwd as its parent. 1010 * 1011 * We also need to track the 'latestdir' of 1012 * interest. This is usually the same as cwd, but 1013 * not if a process is reading directories. 1014 * 1015 * Each time we spot a different process ('pid') 1016 * we save the current value of 'latestdir' in a 1017 * variable qualified by 'lastpid', and 1018 * re-initialize 'latestdir' to any pre-saved 1019 * value for the current 'pid' and 'CWD' if none. 1020 */ 1021 CHECK_VALID_META(p); 1022 pid = atoi(p); 1023 if (pid > 0 && pid != lastpid) { 1024 char *ldir; 1025 char *tp; 1026 1027 if (lastpid > 0) { 1028 /* We need to remember these. */ 1029 Var_Set(lcwd_vname, lcwd, VAR_GLOBAL, 0); 1030 Var_Set(ldir_vname, latestdir, VAR_GLOBAL, 0); 1031 } 1032 snprintf(lcwd_vname, sizeof(lcwd_vname), LCWD_VNAME_FMT, pid); 1033 snprintf(ldir_vname, sizeof(ldir_vname), LDIR_VNAME_FMT, pid); 1034 lastpid = pid; 1035 ldir = Var_Value(ldir_vname, VAR_GLOBAL, &tp); 1036 if (ldir) { 1037 strlcpy(latestdir, ldir, sizeof(latestdir)); 1038 if (tp) 1039 free(tp); 1040 } 1041 ldir = Var_Value(lcwd_vname, VAR_GLOBAL, &tp); 1042 if (ldir) { 1043 strlcpy(lcwd, ldir, sizeof(lcwd)); 1044 if (tp) 1045 free(tp); 1046 } 1047 } 1048 /* Skip past the pid. */ 1049 if (strsep(&p, " ") == NULL) 1050 continue; 1051 #ifdef DEBUG_META_MODE 1052 if (DEBUG(META)) 1053 fprintf(debug_file, "%s: %d: %d: %c: cwd=%s lcwd=%s ldir=%s\n", 1054 fname, lineno, 1055 pid, buf[0], cwd, lcwd, latestdir); 1056 #endif 1057 break; 1058 } 1059 1060 CHECK_VALID_META(p); 1061 1062 /* Process according to record type. */ 1063 switch (buf[0]) { 1064 case 'X': /* eXit */ 1065 Var_Delete(lcwd_vname, VAR_GLOBAL); 1066 Var_Delete(ldir_vname, VAR_GLOBAL); 1067 lastpid = 0; /* no need to save ldir_vname */ 1068 break; 1069 1070 case 'F': /* [v]Fork */ 1071 { 1072 char cldir[64]; 1073 int child; 1074 1075 child = atoi(p); 1076 if (child > 0) { 1077 snprintf(cldir, sizeof(cldir), LCWD_VNAME_FMT, child); 1078 Var_Set(cldir, lcwd, VAR_GLOBAL, 0); 1079 snprintf(cldir, sizeof(cldir), LDIR_VNAME_FMT, child); 1080 Var_Set(cldir, latestdir, VAR_GLOBAL, 0); 1081 #ifdef DEBUG_META_MODE 1082 if (DEBUG(META)) 1083 fprintf(debug_file, "%s: %d: %d: cwd=%s lcwd=%s ldir=%s\n", 1084 fname, lineno, 1085 child, cwd, lcwd, latestdir); 1086 #endif 1087 } 1088 } 1089 break; 1090 1091 case 'C': /* Chdir */ 1092 /* Update lcwd and latest directory. */ 1093 strlcpy(latestdir, p, sizeof(latestdir)); 1094 strlcpy(lcwd, p, sizeof(lcwd)); 1095 Var_Set(lcwd_vname, lcwd, VAR_GLOBAL, 0); 1096 Var_Set(ldir_vname, lcwd, VAR_GLOBAL, 0); 1097 #ifdef DEBUG_META_MODE 1098 if (DEBUG(META)) 1099 fprintf(debug_file, "%s: %d: cwd=%s ldir=%s\n", fname, lineno, cwd, lcwd); 1100 #endif 1101 break; 1102 1103 case 'M': /* renaMe */ 1104 /* 1105 * For 'M'oves we want to check 1106 * the src as for 'R'ead 1107 * and the target as for 'W'rite. 1108 */ 1109 cp = p; /* save this for a second */ 1110 /* now get target */ 1111 if (strsep(&p, " ") == NULL) 1112 continue; 1113 CHECK_VALID_META(p); 1114 move_target = p; 1115 p = cp; 1116 /* 'L' and 'M' put single quotes around the args */ 1117 DEQUOTE(p); 1118 DEQUOTE(move_target); 1119 /* FALLTHROUGH */ 1120 case 'D': /* unlink */ 1121 if (*p == '/' && !Lst_IsEmpty(missingFiles)) { 1122 /* remove p from the missingFiles list if present */ 1123 if ((ln = Lst_Find(missingFiles, p, string_match)) != NULL) { 1124 char *tp = Lst_Datum(ln); 1125 Lst_Remove(missingFiles, ln); 1126 free(tp); 1127 ln = NULL; /* we're done with it */ 1128 } 1129 } 1130 if (buf[0] == 'M') { 1131 /* the target of the mv is a file 'W'ritten */ 1132 #ifdef DEBUG_META_MODE 1133 if (DEBUG(META)) 1134 fprintf(debug_file, "meta_oodate: M %s -> %s\n", 1135 p, move_target); 1136 #endif 1137 p = move_target; 1138 goto check_write; 1139 } 1140 break; 1141 case 'L': /* Link */ 1142 /* 1143 * For 'L'inks check 1144 * the src as for 'R'ead 1145 * and the target as for 'W'rite. 1146 */ 1147 link_src = p; 1148 /* now get target */ 1149 if (strsep(&p, " ") == NULL) 1150 continue; 1151 CHECK_VALID_META(p); 1152 /* 'L' and 'M' put single quotes around the args */ 1153 DEQUOTE(p); 1154 DEQUOTE(link_src); 1155 #ifdef DEBUG_META_MODE 1156 if (DEBUG(META)) 1157 fprintf(debug_file, "meta_oodate: L %s -> %s\n", 1158 link_src, p); 1159 #endif 1160 /* FALLTHROUGH */ 1161 case 'W': /* Write */ 1162 check_write: 1163 /* 1164 * If a file we generated within our bailiwick 1165 * but outside of .OBJDIR is missing, 1166 * we need to do it again. 1167 */ 1168 /* ignore non-absolute paths */ 1169 if (*p != '/') 1170 break; 1171 1172 if (Lst_IsEmpty(metaBailiwick)) 1173 break; 1174 1175 /* ignore cwd - normal dependencies handle those */ 1176 if (strncmp(p, cwd, cwdlen) == 0) 1177 break; 1178 1179 if (!Lst_ForEach(metaBailiwick, prefix_match, p)) 1180 break; 1181 1182 /* tmpdir might be within */ 1183 if (tmplen > 0 && strncmp(p, tmpdir, tmplen) == 0) 1184 break; 1185 1186 /* ignore anything containing the string "tmp" */ 1187 if ((strstr("tmp", p))) 1188 break; 1189 1190 if ((link_src != NULL && lstat(p, &fs) < 0) || 1191 (link_src == NULL && stat(p, &fs) < 0)) { 1192 Lst_AtEnd(missingFiles, bmake_strdup(p)); 1193 } 1194 break; 1195 check_link_src: 1196 p = link_src; 1197 link_src = NULL; 1198 #ifdef DEBUG_META_MODE 1199 if (DEBUG(META)) 1200 fprintf(debug_file, "meta_oodate: L src %s\n", p); 1201 #endif 1202 /* FALLTHROUGH */ 1203 case 'R': /* Read */ 1204 case 'E': /* Exec */ 1205 /* 1206 * Check for runtime files that can't 1207 * be part of the dependencies because 1208 * they are _expected_ to change. 1209 */ 1210 if (*p == '/' && 1211 Lst_ForEach(metaIgnorePaths, prefix_match, p)) { 1212 #ifdef DEBUG_META_MODE 1213 if (DEBUG(META)) 1214 fprintf(debug_file, "meta_oodate: ignoring: %s\n", 1215 p); 1216 #endif 1217 break; 1218 } 1219 1220 /* 1221 * The rest of the record is the file name. 1222 * Check if it's not an absolute path. 1223 */ 1224 { 1225 char *sdirs[4]; 1226 char **sdp; 1227 int sdx = 0; 1228 int found = 0; 1229 1230 if (*p == '/') { 1231 sdirs[sdx++] = p; /* done */ 1232 } else { 1233 if (strcmp(".", p) == 0) 1234 continue; /* no point */ 1235 1236 /* Check vs latestdir */ 1237 snprintf(fname1, sizeof(fname1), "%s/%s", latestdir, p); 1238 sdirs[sdx++] = fname1; 1239 1240 if (strcmp(latestdir, lcwd) != 0) { 1241 /* Check vs lcwd */ 1242 snprintf(fname2, sizeof(fname2), "%s/%s", lcwd, p); 1243 sdirs[sdx++] = fname2; 1244 } 1245 if (strcmp(lcwd, cwd) != 0) { 1246 /* Check vs cwd */ 1247 snprintf(fname3, sizeof(fname3), "%s/%s", cwd, p); 1248 sdirs[sdx++] = fname3; 1249 } 1250 } 1251 sdirs[sdx++] = NULL; 1252 1253 for (sdp = sdirs; *sdp && !found; sdp++) { 1254 #ifdef DEBUG_META_MODE 1255 if (DEBUG(META)) 1256 fprintf(debug_file, "%s: %d: looking for: %s\n", fname, lineno, *sdp); 1257 #endif 1258 if (stat(*sdp, &fs) == 0) { 1259 found = 1; 1260 p = *sdp; 1261 } 1262 } 1263 if (found) { 1264 #ifdef DEBUG_META_MODE 1265 if (DEBUG(META)) 1266 fprintf(debug_file, "%s: %d: found: %s\n", fname, lineno, p); 1267 #endif 1268 if (!S_ISDIR(fs.st_mode) && 1269 fs.st_mtime > gn->mtime) { 1270 if (DEBUG(META)) 1271 fprintf(debug_file, "%s: %d: file '%s' is newer than the target...\n", fname, lineno, p); 1272 oodate = TRUE; 1273 } else if (S_ISDIR(fs.st_mode)) { 1274 /* Update the latest directory. */ 1275 realpath(p, latestdir); 1276 } 1277 } else if (errno == ENOENT && *p == '/' && 1278 strncmp(p, cwd, cwdlen) != 0) { 1279 /* 1280 * A referenced file outside of CWD is missing. 1281 * We cannot catch every eventuality here... 1282 */ 1283 if (DEBUG(META)) 1284 fprintf(debug_file, "%s: %d: file '%s' may have moved?...\n", fname, lineno, p); 1285 oodate = TRUE; 1286 } 1287 } 1288 if (buf[0] == 'E') { 1289 /* previous latestdir is no longer relevant */ 1290 strlcpy(latestdir, lcwd, sizeof(latestdir)); 1291 } 1292 break; 1293 default: 1294 break; 1295 } 1296 if (!oodate && buf[0] == 'L' && link_src != NULL) 1297 goto check_link_src; 1298 } else if (strcmp(buf, "CMD") == 0) { 1299 /* 1300 * Compare the current command with the one in the 1301 * meta data file. 1302 */ 1303 if (ln == NULL) { 1304 if (DEBUG(META)) 1305 fprintf(debug_file, "%s: %d: there were more build commands in the meta data file than there are now...\n", fname, lineno); 1306 oodate = TRUE; 1307 } else { 1308 char *cmd = (char *)Lst_Datum(ln); 1309 Boolean hasOODATE = FALSE; 1310 1311 if (strstr(cmd, "$?")) 1312 hasOODATE = TRUE; 1313 else if ((cp = strstr(cmd, ".OODATE"))) { 1314 /* check for $[{(].OODATE[:)}] */ 1315 if (cp > cmd + 2 && cp[-2] == '$') 1316 hasOODATE = TRUE; 1317 } 1318 if (hasOODATE) { 1319 needOODATE = TRUE; 1320 if (DEBUG(META)) 1321 fprintf(debug_file, "%s: %d: cannot compare command using .OODATE\n", fname, lineno); 1322 } 1323 cmd = Var_Subst(NULL, cmd, gn, TRUE, TRUE); 1324 1325 if ((cp = strchr(cmd, '\n'))) { 1326 int n; 1327 1328 /* 1329 * This command contains newlines, we need to 1330 * fetch more from the .meta file before we 1331 * attempt a comparison. 1332 */ 1333 /* first put the newline back at buf[x - 1] */ 1334 buf[x - 1] = '\n'; 1335 do { 1336 /* now fetch the next line */ 1337 if ((n = fgetLine(&buf, &bufsz, x, fp)) <= 0) 1338 break; 1339 x = n; 1340 lineno++; 1341 if (buf[x - 1] != '\n') { 1342 warnx("%s: %d: line truncated at %u", fname, lineno, x); 1343 break; 1344 } 1345 cp = strchr(++cp, '\n'); 1346 } while (cp); 1347 if (buf[x - 1] == '\n') 1348 buf[x - 1] = '\0'; 1349 } 1350 if (!hasOODATE && 1351 !(gn->type & OP_NOMETA_CMP) && 1352 strcmp(p, cmd) != 0) { 1353 if (DEBUG(META)) 1354 fprintf(debug_file, "%s: %d: a build command has changed\n%s\nvs\n%s\n", fname, lineno, p, cmd); 1355 if (!metaIgnoreCMDs) 1356 oodate = TRUE; 1357 } 1358 free(cmd); 1359 ln = Lst_Succ(ln); 1360 } 1361 } else if (strcmp(buf, "CWD") == 0) { 1362 /* 1363 * Check if there are extra commands now 1364 * that weren't in the meta data file. 1365 */ 1366 if (!oodate && ln != NULL) { 1367 if (DEBUG(META)) 1368 fprintf(debug_file, "%s: %d: there are extra build commands now that weren't in the meta data file\n", fname, lineno); 1369 oodate = TRUE; 1370 } 1371 if (strcmp(p, cwd) != 0) { 1372 if (DEBUG(META)) 1373 fprintf(debug_file, "%s: %d: the current working directory has changed from '%s' to '%s'\n", fname, lineno, p, curdir); 1374 oodate = TRUE; 1375 } 1376 } 1377 } 1378 1379 fclose(fp); 1380 if (!Lst_IsEmpty(missingFiles)) { 1381 if (DEBUG(META)) 1382 fprintf(debug_file, "%s: missing files: %s...\n", 1383 fname, (char *)Lst_Datum(Lst_First(missingFiles))); 1384 oodate = TRUE; 1385 Lst_Destroy(missingFiles, (FreeProc *)free); 1386 } 1387 } else { 1388 if ((gn->type & OP_META)) { 1389 if (DEBUG(META)) 1390 fprintf(debug_file, "%s: required but missing\n", fname); 1391 oodate = TRUE; 1392 } 1393 } 1394 if (oodate && needOODATE) { 1395 /* 1396 * Target uses .OODATE which is empty; or we wouldn't be here. 1397 * We have decided it is oodate, so .OODATE needs to be set. 1398 * All we can sanely do is set it to .ALLSRC. 1399 */ 1400 Var_Delete(OODATE, gn); 1401 Var_Set(OODATE, Var_Value(ALLSRC, gn, &cp), gn, 0); 1402 if (cp) 1403 free(cp); 1404 } 1405 return oodate; 1406 } 1407 1408 /* support for compat mode */ 1409 1410 static int childPipe[2]; 1411 1412 void 1413 meta_compat_start(void) 1414 { 1415 #ifdef USE_FILEMON_ONCE 1416 /* 1417 * We need to re-open filemon for each cmd. 1418 */ 1419 BuildMon *pbm = &Mybm; 1420 1421 if (pbm->mfp != NULL && useFilemon) { 1422 filemon_open(pbm); 1423 } else { 1424 pbm->mon_fd = pbm->filemon_fd = -1; 1425 } 1426 #endif 1427 if (pipe(childPipe) < 0) 1428 Punt("Cannot create pipe: %s", strerror(errno)); 1429 /* Set close-on-exec flag for both */ 1430 (void)fcntl(childPipe[0], F_SETFD, 1); 1431 (void)fcntl(childPipe[1], F_SETFD, 1); 1432 } 1433 1434 void 1435 meta_compat_child(void) 1436 { 1437 meta_job_child(NULL); 1438 if (dup2(childPipe[1], 1) < 0 || 1439 dup2(1, 2) < 0) { 1440 execError("dup2", "pipe"); 1441 _exit(1); 1442 } 1443 } 1444 1445 void 1446 meta_compat_parent(void) 1447 { 1448 FILE *fp; 1449 char buf[BUFSIZ]; 1450 1451 close(childPipe[1]); /* child side */ 1452 fp = fdopen(childPipe[0], "r"); 1453 while (fgets(buf, sizeof(buf), fp)) { 1454 meta_job_output(NULL, buf, ""); 1455 printf("%s", buf); 1456 } 1457 fclose(fp); 1458 } 1459 1460 #endif /* USE_META */ 1461