main.c revision 1.648
1 /* $NetBSD: main.c,v 1.648 2025/05/18 05:44:57 rillig Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 /* 72 * The main file for this entire program. Exit routines etc. reside here. 73 * 74 * Utility functions defined in this file: 75 * 76 * Main_ParseArgLine 77 * Parse and process command line arguments from a 78 * single string. Used to implement the special targets 79 * .MFLAGS and .MAKEFLAGS. 80 * 81 * Error Print a tagged error message. 82 * 83 * Fatal Print an error message and exit. 84 * 85 * Punt Abort all jobs and exit with a message. 86 */ 87 88 #include <sys/types.h> 89 #include <sys/time.h> 90 #include <sys/param.h> 91 #include <sys/resource.h> 92 #include <sys/stat.h> 93 #ifdef MAKE_NATIVE 94 #include <sys/sysctl.h> 95 #endif 96 #include <sys/utsname.h> 97 #include <sys/wait.h> 98 99 #include <errno.h> 100 #include <signal.h> 101 #include <stdarg.h> 102 #include <time.h> 103 104 #include "make.h" 105 #include "dir.h" 106 #include "job.h" 107 #ifdef USE_META 108 # include "meta.h" 109 #endif 110 #include "pathnames.h" 111 #include "trace.h" 112 113 /* "@(#)main.c 8.3 (Berkeley) 3/19/94" */ 114 MAKE_RCSID("$NetBSD: main.c,v 1.648 2025/05/18 05:44:57 rillig Exp $"); 115 #if defined(MAKE_NATIVE) 116 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993 " 117 "The Regents of the University of California. " 118 "All rights reserved."); 119 #endif 120 121 CmdOpts opts; 122 time_t now; /* Time at start of make */ 123 GNode *defaultNode; /* .DEFAULT node */ 124 bool allPrecious; /* .PRECIOUS given on a line by itself */ 125 bool deleteOnError; /* .DELETE_ON_ERROR: set */ 126 127 static int maxJobTokens; /* -j argument */ 128 static bool enterFlagObj; /* -w and objdir != srcdir */ 129 130 static int tokenPoolReader = -1, tokenPoolWriter = -1; 131 bool doing_depend; /* Set while reading .depend */ 132 static bool jobsRunning; /* true if the jobs might be running */ 133 static const char *tracefile; 134 static bool ReadMakefile(const char *); 135 static void purge_relative_cached_realpaths(void); 136 137 static bool ignorePWD; /* if we use -C, PWD is meaningless */ 138 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 139 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 140 const char *progname; 141 char *makeDependfile; 142 pid_t myPid; 143 int makelevel; 144 145 bool forceJobs = false; 146 static int main_errors = 0; 147 static HashTable cached_realpaths; 148 149 /* 150 * For compatibility with the POSIX version of MAKEFLAGS that includes 151 * all the options without '-', convert 'flags' to '-f -l -a -g -s '. 152 */ 153 static char * 154 explode(const char *flags) 155 { 156 char *exploded, *ep; 157 const char *p; 158 159 if (flags == NULL) 160 return NULL; 161 162 for (p = flags; *p != '\0'; p++) 163 if (!ch_isalpha(*p)) 164 return bmake_strdup(flags); 165 166 exploded = bmake_malloc((size_t)(p - flags) * 3 + 1); 167 for (p = flags, ep = exploded; *p != '\0'; p++) { 168 *ep++ = '-'; 169 *ep++ = *p; 170 *ep++ = ' '; 171 } 172 *ep = '\0'; 173 return exploded; 174 } 175 176 MAKE_ATTR_DEAD static void 177 usage(void) 178 { 179 size_t prognameLen = strcspn(progname, "["); 180 181 (void)fprintf(stderr, 182 "usage: %.*s [-BeikNnqrSstWwX]\n" 183 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 184 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 185 " [-V variable] [-v variable] [variable=value] [target ...]\n", 186 (int)prognameLen, progname); 187 exit(2); 188 } 189 190 static void 191 MainParseArgDebugFile(const char *arg) 192 { 193 const char *mode; 194 size_t len; 195 char *fname; 196 197 if (opts.debug_file != stdout && opts.debug_file != stderr) 198 fclose(opts.debug_file); 199 200 if (*arg == '+') { 201 arg++; 202 mode = "a"; 203 } else 204 mode = "w"; 205 206 if (strcmp(arg, "stdout") == 0) { 207 opts.debug_file = stdout; 208 return; 209 } 210 if (strcmp(arg, "stderr") == 0) { 211 opts.debug_file = stderr; 212 return; 213 } 214 215 len = strlen(arg); 216 fname = bmake_malloc(len + 20); 217 memcpy(fname, arg, len + 1); 218 219 /* Replace the trailing '%d' after '.%d' with the pid. */ 220 if (len >= 3 && memcmp(fname + len - 3, ".%d", 3) == 0) 221 snprintf(fname + len - 2, 20, "%d", getpid()); 222 223 opts.debug_file = fopen(fname, mode); 224 if (opts.debug_file == NULL) { 225 fprintf(stderr, "Cannot open debug file \"%s\"\n", fname); 226 exit(2); 227 } 228 free(fname); 229 } 230 231 static void 232 MainParseArgDebug(const char *argvalue) 233 { 234 const char *modules; 235 DebugFlags debug = opts.debug; 236 237 for (modules = argvalue; *modules != '\0'; modules++) { 238 switch (*modules) { 239 case '0': /* undocumented, only intended for tests */ 240 memset(&debug, 0, sizeof(debug)); 241 break; 242 case 'A': 243 memset(&debug, ~0, sizeof(debug)); 244 break; 245 case 'a': 246 debug.DEBUG_ARCH = true; 247 break; 248 case 'C': 249 debug.DEBUG_CWD = true; 250 break; 251 case 'c': 252 debug.DEBUG_COND = true; 253 break; 254 case 'd': 255 debug.DEBUG_DIR = true; 256 break; 257 case 'e': 258 debug.DEBUG_ERROR = true; 259 break; 260 case 'f': 261 debug.DEBUG_FOR = true; 262 break; 263 case 'g': 264 if (modules[1] == '1') { 265 debug.DEBUG_GRAPH1 = true; 266 modules++; 267 } else if (modules[1] == '2') { 268 debug.DEBUG_GRAPH2 = true; 269 modules++; 270 } else if (modules[1] == '3') { 271 debug.DEBUG_GRAPH3 = true; 272 modules++; 273 } 274 break; 275 case 'h': 276 debug.DEBUG_HASH = true; 277 break; 278 case 'j': 279 debug.DEBUG_JOB = true; 280 break; 281 case 'L': 282 opts.strict = true; 283 break; 284 case 'l': 285 debug.DEBUG_LOUD = true; 286 break; 287 case 'M': 288 debug.DEBUG_META = true; 289 break; 290 case 'm': 291 debug.DEBUG_MAKE = true; 292 break; 293 case 'n': 294 debug.DEBUG_SCRIPT = true; 295 break; 296 case 'p': 297 debug.DEBUG_PARSE = true; 298 break; 299 case 's': 300 debug.DEBUG_SUFF = true; 301 break; 302 case 't': 303 debug.DEBUG_TARG = true; 304 break; 305 case 'V': 306 opts.debugVflag = true; 307 break; 308 case 'v': 309 debug.DEBUG_VAR = true; 310 break; 311 case 'x': 312 debug.DEBUG_SHELL = true; 313 break; 314 case 'F': 315 MainParseArgDebugFile(modules + 1); 316 goto finish; 317 default: 318 (void)fprintf(stderr, 319 "%s: illegal argument to d option -- %c\n", 320 progname, *modules); 321 usage(); 322 } 323 } 324 325 finish: 326 opts.debug = debug; 327 328 setvbuf(opts.debug_file, NULL, _IONBF, 0); 329 if (opts.debug_file != stdout) 330 setvbuf(stdout, NULL, _IOLBF, 0); 331 } 332 333 /* Is path relative or does it contain any relative component "." or ".."? */ 334 static bool 335 IsRelativePath(const char *path) 336 { 337 const char *p; 338 339 if (path[0] != '/') 340 return true; 341 p = path; 342 while ((p = strstr(p, "/.")) != NULL) { 343 p += 2; 344 if (*p == '.') 345 p++; 346 if (*p == '/' || *p == '\0') 347 return true; 348 } 349 return false; 350 } 351 352 static void 353 MainParseArgChdir(const char *argvalue) 354 { 355 struct stat sa, sb; 356 357 if (chdir(argvalue) == -1) { 358 (void)fprintf(stderr, "%s: chdir %s: %s\n", 359 progname, argvalue, strerror(errno)); 360 exit(2); /* Not 1 so -q can distinguish error */ 361 } 362 if (getcwd(curdir, MAXPATHLEN) == NULL) { 363 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 364 exit(2); 365 } 366 if (!IsRelativePath(argvalue) && 367 stat(argvalue, &sa) != -1 && 368 stat(curdir, &sb) != -1 && 369 sa.st_ino == sb.st_ino && 370 sa.st_dev == sb.st_dev) 371 snprintf(curdir, MAXPATHLEN, "%s", argvalue); 372 ignorePWD = true; 373 } 374 375 static void 376 MainParseArgJobsInternal(const char *argvalue) 377 { 378 char end; 379 if (sscanf(argvalue, "%d,%d%c", 380 &tokenPoolReader, &tokenPoolWriter, &end) != 2) { 381 (void)fprintf(stderr, 382 "%s: error: invalid internal option \"-J %s\"\n", 383 progname, argvalue); 384 exit(2); 385 } 386 if ((fcntl(tokenPoolReader, F_GETFD, 0) < 0) || 387 (fcntl(tokenPoolWriter, F_GETFD, 0) < 0)) { 388 tokenPoolReader = -1; 389 tokenPoolWriter = -1; 390 opts.compatMake = true; 391 } else { 392 Global_Append(MAKEFLAGS, "-J"); 393 Global_Append(MAKEFLAGS, argvalue); 394 } 395 } 396 397 static void 398 MainParseArgJobs(const char *arg) 399 { 400 const char *p; 401 char *end; 402 char v[12]; 403 404 forceJobs = true; 405 opts.maxJobs = (int)strtol(arg, &end, 0); 406 p = end; 407 #ifdef _SC_NPROCESSORS_ONLN 408 if (*p != '\0') { 409 double d; 410 411 if (*p == 'C') 412 d = (opts.maxJobs > 0) ? opts.maxJobs : 1; 413 else if (*p == '.') { 414 d = strtod(arg, &end); 415 p = end; 416 } else 417 d = 0.0; 418 if (d > 0.0) { 419 p = ""; 420 opts.maxJobs = (int)sysconf(_SC_NPROCESSORS_ONLN); 421 opts.maxJobs = (int)(d * (double)opts.maxJobs); 422 } 423 } 424 #endif 425 if (*p != '\0' || opts.maxJobs < 1) { 426 (void)fprintf(stderr, 427 "%s: argument '%s' to option '-j' " 428 "must be a positive number\n", 429 progname, arg); 430 exit(2); /* Not 1 so -q can distinguish error */ 431 } 432 snprintf(v, sizeof(v), "%d", opts.maxJobs); 433 Global_Append(MAKEFLAGS, "-j"); 434 Global_Append(MAKEFLAGS, v); 435 Global_Set(".MAKE.JOBS", v); 436 maxJobTokens = opts.maxJobs; 437 } 438 439 static void 440 MainParseArgSysInc(const char *argvalue) 441 { 442 if (strncmp(argvalue, ".../", 4) == 0) { 443 char *found_path = Dir_FindHereOrAbove(curdir, argvalue + 4); 444 if (found_path == NULL) 445 return; 446 (void)SearchPath_Add(sysIncPath, found_path); 447 free(found_path); 448 } else { 449 (void)SearchPath_Add(sysIncPath, argvalue); 450 } 451 Global_Append(MAKEFLAGS, "-m"); 452 Global_Append(MAKEFLAGS, argvalue); 453 Dir_SetSYSPATH(); 454 } 455 456 static bool 457 MainParseOption(char c, const char *argvalue) 458 { 459 switch (c) { 460 case '\0': 461 break; 462 case 'B': 463 opts.compatMake = true; 464 Global_Append(MAKEFLAGS, "-B"); 465 Global_Set(".MAKE.MODE", "compat"); 466 break; 467 case 'C': 468 MainParseArgChdir(argvalue); 469 break; 470 case 'D': 471 if (argvalue[0] == '\0') 472 return false; 473 Var_SetExpand(SCOPE_GLOBAL, argvalue, "1"); 474 Global_Append(MAKEFLAGS, "-D"); 475 Global_Append(MAKEFLAGS, argvalue); 476 break; 477 case 'I': 478 SearchPath_Add(parseIncPath, argvalue); 479 Global_Append(MAKEFLAGS, "-I"); 480 Global_Append(MAKEFLAGS, argvalue); 481 break; 482 case 'J': 483 MainParseArgJobsInternal(argvalue); 484 break; 485 case 'N': 486 opts.noExecute = true; 487 opts.noRecursiveExecute = true; 488 Global_Append(MAKEFLAGS, "-N"); 489 break; 490 case 'S': 491 opts.keepgoing = false; 492 Global_Append(MAKEFLAGS, "-S"); 493 break; 494 case 'T': 495 tracefile = bmake_strdup(argvalue); 496 Global_Append(MAKEFLAGS, "-T"); 497 Global_Append(MAKEFLAGS, argvalue); 498 break; 499 case 'V': 500 case 'v': 501 opts.printVars = c == 'v' ? PVM_EXPANDED : PVM_UNEXPANDED; 502 Lst_Append(&opts.variables, bmake_strdup(argvalue)); 503 /* XXX: Why always -V? */ 504 Global_Append(MAKEFLAGS, "-V"); 505 Global_Append(MAKEFLAGS, argvalue); 506 break; 507 case 'W': 508 opts.parseWarnFatal = true; 509 /* XXX: why no Global_Append? */ 510 break; 511 case 'X': 512 opts.varNoExportEnv = true; 513 Global_Append(MAKEFLAGS, "-X"); 514 break; 515 case 'd': 516 /* If '-d-opts' don't pass to children */ 517 if (argvalue[0] == '-') 518 argvalue++; 519 else { 520 Global_Append(MAKEFLAGS, "-d"); 521 Global_Append(MAKEFLAGS, argvalue); 522 } 523 MainParseArgDebug(argvalue); 524 break; 525 case 'e': 526 opts.checkEnvFirst = true; 527 Global_Append(MAKEFLAGS, "-e"); 528 break; 529 case 'f': 530 Lst_Append(&opts.makefiles, bmake_strdup(argvalue)); 531 break; 532 case 'i': 533 opts.ignoreErrors = true; 534 Global_Append(MAKEFLAGS, "-i"); 535 break; 536 case 'j': 537 MainParseArgJobs(argvalue); 538 break; 539 case 'k': 540 opts.keepgoing = true; 541 Global_Append(MAKEFLAGS, "-k"); 542 break; 543 case 'm': 544 MainParseArgSysInc(argvalue); 545 /* XXX: why no Var_Append? */ 546 break; 547 case 'n': 548 opts.noExecute = true; 549 Global_Append(MAKEFLAGS, "-n"); 550 break; 551 case 'q': 552 opts.query = true; 553 /* Kind of nonsensical, wot? */ 554 Global_Append(MAKEFLAGS, "-q"); 555 break; 556 case 'r': 557 opts.noBuiltins = true; 558 Global_Append(MAKEFLAGS, "-r"); 559 break; 560 case 's': 561 opts.silent = true; 562 Global_Append(MAKEFLAGS, "-s"); 563 break; 564 case 't': 565 opts.touch = true; 566 Global_Append(MAKEFLAGS, "-t"); 567 break; 568 case 'w': 569 opts.enterFlag = true; 570 Global_Append(MAKEFLAGS, "-w"); 571 break; 572 default: 573 usage(); 574 } 575 return true; 576 } 577 578 /* 579 * Parse the given arguments. Called from main() and from 580 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 581 * 582 * The arguments must be treated as read-only and will be freed after the 583 * call. 584 * 585 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 586 */ 587 static void 588 MainParseArgs(int argc, char **argv) 589 { 590 char c; 591 int arginc; 592 char *argvalue; 593 char *optscan; 594 bool inOption, dashDash = false; 595 596 const char *optspecs = "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w"; 597 /* Can't actually use getopt(3) because rescanning is not portable */ 598 599 rearg: 600 inOption = false; 601 optscan = NULL; 602 while (argc > 1) { 603 const char *optspec; 604 if (!inOption) 605 optscan = argv[1]; 606 c = *optscan++; 607 arginc = 0; 608 if (inOption) { 609 if (c == '\0') { 610 argv++; 611 argc--; 612 inOption = false; 613 continue; 614 } 615 } else { 616 if (c != '-' || dashDash) 617 break; 618 inOption = true; 619 c = *optscan++; 620 } 621 /* '-' found at some earlier point */ 622 optspec = strchr(optspecs, c); 623 if (c != '\0' && optspec != NULL && optspec[1] == ':') { 624 /* 625 * -<something> found, and <something> should have an 626 * argument 627 */ 628 inOption = false; 629 arginc = 1; 630 argvalue = optscan; 631 if (*argvalue == '\0') { 632 if (argc < 3) 633 goto noarg; 634 argvalue = argv[2]; 635 arginc = 2; 636 } 637 } else { 638 argvalue = NULL; 639 } 640 switch (c) { 641 case '\0': 642 arginc = 1; 643 inOption = false; 644 break; 645 case '-': 646 dashDash = true; 647 break; 648 default: 649 if (!MainParseOption(c, argvalue)) 650 goto noarg; 651 } 652 argv += arginc; 653 argc -= arginc; 654 } 655 656 /* 657 * See if the rest of the arguments are variable assignments and 658 * perform them if so. Else take them to be targets and stuff them 659 * on the end of the "create" list. 660 */ 661 for (; argc > 1; argv++, argc--) { 662 if (!Parse_VarAssign(argv[1], false, SCOPE_CMDLINE)) { 663 if (argv[1][0] == '\0') 664 Punt("illegal (null) argument."); 665 if (argv[1][0] == '-' && !dashDash) 666 goto rearg; 667 Lst_Append(&opts.create, bmake_strdup(argv[1])); 668 } 669 } 670 671 return; 672 noarg: 673 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 674 progname, c); 675 usage(); 676 } 677 678 /* 679 * Break a line of arguments into words and parse them. 680 * 681 * Used when a .MFLAGS or .MAKEFLAGS target is encountered during parsing and 682 * by main() when reading the MAKEFLAGS environment variable. 683 */ 684 void 685 Main_ParseArgLine(const char *line) 686 { 687 Words words; 688 char *buf; 689 const char *p; 690 691 if (line == NULL) 692 return; 693 for (p = line; *p == ' '; p++) 694 continue; 695 if (p[0] == '\0') 696 return; 697 698 { 699 FStr argv0 = Var_Value(SCOPE_GLOBAL, ".MAKE"); 700 buf = str_concat3(argv0.str, " ", p); 701 FStr_Done(&argv0); 702 } 703 704 words = Str_Words(buf, true); 705 if (words.words == NULL) { 706 Error("Unterminated quoted string [%s]", buf); 707 free(buf); 708 return; 709 } 710 free(buf); 711 MainParseArgs((int)words.len, words.words); 712 713 Words_Free(words); 714 } 715 716 bool 717 Main_SetObjdir(bool writable, const char *fmt, ...) 718 { 719 struct stat sb; 720 char *path; 721 char buf[MAXPATHLEN + 1]; 722 char buf2[MAXPATHLEN + 1]; 723 va_list ap; 724 725 va_start(ap, fmt); 726 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 727 va_end(ap); 728 729 if (path[0] != '/') { 730 if (snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path) <= MAXPATHLEN) 731 path = buf2; 732 else 733 return false; 734 } 735 736 /* look for the directory and try to chdir there */ 737 if (stat(path, &sb) != 0 || !S_ISDIR(sb.st_mode)) 738 return false; 739 740 if ((writable && access(path, W_OK) != 0) || chdir(path) != 0) { 741 (void)fprintf(stderr, "%s: warning: %s: %s.\n", 742 progname, path, strerror(errno)); 743 /* Allow debugging how we got here - not always obvious */ 744 if (GetBooleanExpr("${MAKE_DEBUG_OBJDIR_CHECK_WRITABLE}", 745 false)) 746 PrintOnError(NULL, ""); 747 return false; 748 } 749 750 snprintf(objdir, sizeof objdir, "%s", path); 751 Global_Set(".OBJDIR", objdir); 752 setenv("PWD", objdir, 1); 753 Dir_InitDot(); 754 purge_relative_cached_realpaths(); 755 if (opts.enterFlag && strcmp(objdir, curdir) != 0) 756 enterFlagObj = true; 757 return true; 758 } 759 760 static bool 761 SetVarObjdir(bool writable, const char *var, const char *suffix) 762 { 763 FStr path = Var_Value(SCOPE_CMDLINE, var); 764 765 if (path.str == NULL || path.str[0] == '\0') { 766 FStr_Done(&path); 767 return false; 768 } 769 770 Var_Expand(&path, SCOPE_GLOBAL, VARE_EVAL); 771 772 (void)Main_SetObjdir(writable, "%s%s", path.str, suffix); 773 774 FStr_Done(&path); 775 return true; 776 } 777 778 /* 779 * Splits str into words (in-place, modifying it), adding them to the list. 780 * The string must be kept alive as long as the list. 781 */ 782 void 783 AppendWords(StringList *lp, char *str) 784 { 785 char *p; 786 const char *sep = " \t"; 787 788 for (p = strtok(str, sep); p != NULL; p = strtok(NULL, sep)) 789 Lst_Append(lp, p); 790 } 791 792 #ifdef SIGINFO 793 static void 794 siginfo(int signo MAKE_ATTR_UNUSED) 795 { 796 char dir[MAXPATHLEN]; 797 char str[2 * MAXPATHLEN]; 798 int len; 799 if (getcwd(dir, sizeof dir) == NULL) 800 return; 801 len = snprintf(str, sizeof str, "%s: Working in: %s\n", progname, dir); 802 if (len > 0) 803 (void)write(STDERR_FILENO, str, (size_t)len); 804 } 805 #endif 806 807 /* Allow makefiles some control over the mode we run in. */ 808 static void 809 MakeMode(void) 810 { 811 char *mode = Var_Subst("${.MAKE.MODE:tl}", SCOPE_GLOBAL, VARE_EVAL); 812 /* TODO: handle errors */ 813 814 if (mode[0] != '\0') { 815 if (strstr(mode, "compat") != NULL) { 816 opts.compatMake = true; 817 forceJobs = false; 818 } 819 #if USE_META 820 if (strstr(mode, "meta") != NULL) 821 meta_mode_init(mode); 822 #endif 823 if (strstr(mode, "randomize-targets") != NULL) 824 opts.randomizeTargets = true; 825 } 826 827 free(mode); 828 } 829 830 static void 831 PrintVar(const char *varname, bool expandVars) 832 { 833 if (strchr(varname, '$') != NULL) { 834 char *evalue = Var_Subst(varname, SCOPE_GLOBAL, VARE_EVAL); 835 /* TODO: handle errors */ 836 printf("%s\n", evalue); 837 free(evalue); 838 839 } else if (expandVars) { 840 char *expr = str_concat3("${", varname, "}"); 841 char *evalue = Var_Subst(expr, SCOPE_GLOBAL, VARE_EVAL); 842 /* TODO: handle errors */ 843 free(expr); 844 printf("%s\n", evalue); 845 free(evalue); 846 847 } else { 848 FStr value = Var_Value(SCOPE_GLOBAL, varname); 849 printf("%s\n", value.str != NULL ? value.str : ""); 850 FStr_Done(&value); 851 } 852 } 853 854 /* 855 * Return a bool based on a variable. 856 * 857 * If the knob is not set, return the fallback. 858 * If set, anything that looks or smells like "No", "False", "Off", "0", etc. 859 * is false, otherwise true. 860 */ 861 bool 862 GetBooleanExpr(const char *expr, bool fallback) 863 { 864 char *value; 865 bool res; 866 867 value = Var_Subst(expr, SCOPE_GLOBAL, VARE_EVAL); 868 /* TODO: handle errors */ 869 res = ParseBoolean(value, fallback); 870 free(value); 871 return res; 872 } 873 874 static void 875 doPrintVars(void) 876 { 877 StringListNode *ln; 878 bool expandVars; 879 880 if (opts.printVars == PVM_EXPANDED) 881 expandVars = true; 882 else if (opts.debugVflag) 883 expandVars = false; 884 else 885 expandVars = GetBooleanExpr("${.MAKE.EXPAND_VARIABLES}", 886 false); 887 888 for (ln = opts.variables.first; ln != NULL; ln = ln->next) { 889 const char *varname = ln->datum; 890 PrintVar(varname, expandVars); 891 } 892 } 893 894 static bool 895 runTargets(void) 896 { 897 GNodeList targs = LST_INIT; 898 bool outOfDate; /* false if all targets up to date */ 899 900 if (Lst_IsEmpty(&opts.create)) 901 Parse_MainName(&targs); 902 else 903 Targ_FindList(&targs, &opts.create); 904 905 if (!opts.compatMake) { 906 if (!opts.query) { 907 Job_Init(); 908 jobsRunning = true; 909 } 910 911 outOfDate = Make_Run(&targs); 912 } else { 913 Compat_MakeAll(&targs); 914 outOfDate = false; 915 } 916 Lst_Done(&targs); /* Don't free the targets themselves. */ 917 return outOfDate; 918 } 919 920 /* 921 * Set up the .TARGETS variable to contain the list of targets to be created. 922 * If none specified, make the variable empty for now, the parser will fill 923 * in the default or .MAIN target later. 924 */ 925 static void 926 InitVarTargets(void) 927 { 928 StringListNode *ln; 929 930 if (Lst_IsEmpty(&opts.create)) { 931 Global_Set(".TARGETS", ""); 932 return; 933 } 934 935 for (ln = opts.create.first; ln != NULL; ln = ln->next) { 936 const char *name = ln->datum; 937 Global_Append(".TARGETS", name); 938 } 939 } 940 941 static void 942 InitRandom(void) 943 { 944 struct timeval tv; 945 946 gettimeofday(&tv, NULL); 947 srandom((unsigned)(tv.tv_sec + tv.tv_usec)); 948 } 949 950 static const char * 951 InitVarMachine(const struct utsname *utsname MAKE_ATTR_UNUSED) 952 { 953 const char *machine = getenv("MACHINE"); 954 if (machine != NULL) 955 return machine; 956 957 #if defined(MAKE_NATIVE) 958 return utsname->machine; 959 #elif defined(MAKE_MACHINE) 960 return MAKE_MACHINE; 961 #else 962 return "unknown"; 963 #endif 964 } 965 966 static const char * 967 InitVarMachineArch(void) 968 { 969 const char *env = getenv("MACHINE_ARCH"); 970 if (env != NULL) 971 return env; 972 973 #ifdef MAKE_NATIVE 974 { 975 struct utsname utsname; 976 static char machine_arch_buf[sizeof utsname.machine]; 977 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 978 size_t len = sizeof machine_arch_buf; 979 980 if (sysctl(mib, (unsigned)__arraycount(mib), 981 machine_arch_buf, &len, NULL, 0) < 0) { 982 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", 983 progname, strerror(errno)); 984 exit(2); 985 } 986 987 return machine_arch_buf; 988 } 989 #elif defined(MACHINE_ARCH) 990 return MACHINE_ARCH; 991 #elif defined(MAKE_MACHINE_ARCH) 992 return MAKE_MACHINE_ARCH; 993 #else 994 return "unknown"; 995 #endif 996 } 997 998 #ifndef NO_PWD_OVERRIDE 999 /* 1000 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1001 * since the value of curdir can vary depending on how we got 1002 * here. That is, sitting at a shell prompt (shell that provides $PWD) 1003 * or via subdir.mk, in which case it's likely a shell which does 1004 * not provide it. 1005 * 1006 * So, to stop it breaking this case only, we ignore PWD if 1007 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains an expression. 1008 */ 1009 static void 1010 HandlePWD(const struct stat *curdir_st) 1011 { 1012 char *pwd; 1013 FStr makeobjdir; 1014 struct stat pwd_st; 1015 1016 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1017 return; 1018 1019 if (Var_Exists(SCOPE_CMDLINE, "MAKEOBJDIRPREFIX")) 1020 return; 1021 1022 makeobjdir = Var_Value(SCOPE_CMDLINE, "MAKEOBJDIR"); 1023 if (makeobjdir.str != NULL && strchr(makeobjdir.str, '$') != NULL) 1024 goto ignore_pwd; 1025 1026 if (stat(pwd, &pwd_st) == 0 && 1027 curdir_st->st_ino == pwd_st.st_ino && 1028 curdir_st->st_dev == pwd_st.st_dev) 1029 snprintf(curdir, MAXPATHLEN, "%s", pwd); 1030 1031 ignore_pwd: 1032 FStr_Done(&makeobjdir); 1033 } 1034 #endif 1035 1036 /* 1037 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, MAKEOBJDIR is set 1038 * in the environment, try only that value and fall back to .CURDIR if it 1039 * does not exist. 1040 * 1041 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1042 * and finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none of these 1043 * paths exist, just use .CURDIR. 1044 */ 1045 static void 1046 InitObjdir(const char *machine, const char *machine_arch) 1047 { 1048 bool writable; 1049 1050 Dir_InitCur(curdir); 1051 writable = GetBooleanExpr("${MAKE_OBJDIR_CHECK_WRITABLE}", true); 1052 (void)Main_SetObjdir(false, "%s", curdir); 1053 1054 if (!SetVarObjdir(writable, "MAKEOBJDIRPREFIX", curdir) && 1055 !SetVarObjdir(writable, "MAKEOBJDIR", "") && 1056 !Main_SetObjdir(writable, "%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1057 !Main_SetObjdir(writable, "%s.%s", _PATH_OBJDIR, machine) && 1058 !Main_SetObjdir(writable, "%s", _PATH_OBJDIR)) 1059 (void)Main_SetObjdir(writable, "%s%s", _PATH_OBJDIRPREFIX, curdir); 1060 } 1061 1062 /* get rid of resource limit on file descriptors */ 1063 static void 1064 UnlimitFiles(void) 1065 { 1066 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1067 struct rlimit rl; 1068 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1069 rl.rlim_cur != rl.rlim_max) { 1070 rl.rlim_cur = rl.rlim_max; 1071 (void)setrlimit(RLIMIT_NOFILE, &rl); 1072 } 1073 #endif 1074 } 1075 1076 static void 1077 CmdOpts_Init(void) 1078 { 1079 opts.compatMake = false; 1080 memset(&opts.debug, 0, sizeof(opts.debug)); 1081 /* opts.debug_file has already been initialized earlier */ 1082 opts.strict = false; 1083 opts.debugVflag = false; 1084 opts.checkEnvFirst = false; 1085 Lst_Init(&opts.makefiles); 1086 opts.ignoreErrors = false; /* Pay attention to non-zero returns */ 1087 opts.maxJobs = 1; 1088 opts.keepgoing = false; /* Stop on error */ 1089 opts.noRecursiveExecute = false; /* Execute all .MAKE targets */ 1090 opts.noExecute = false; /* Execute all commands */ 1091 opts.query = false; 1092 opts.noBuiltins = false; /* Read the built-in rules */ 1093 opts.silent = false; /* Print commands as executed */ 1094 opts.touch = false; 1095 opts.printVars = PVM_NONE; 1096 Lst_Init(&opts.variables); 1097 opts.parseWarnFatal = false; 1098 opts.enterFlag = false; 1099 opts.varNoExportEnv = false; 1100 Lst_Init(&opts.create); 1101 } 1102 1103 /* 1104 * Initialize MAKE and .MAKE to the path of the executable, so that it can be 1105 * found by execvp(3) and the shells, even after a chdir. 1106 * 1107 * If it's a relative path and contains a '/', resolve it to an absolute path. 1108 * Otherwise keep it as is, assuming it will be found in the PATH. 1109 */ 1110 static void 1111 InitVarMake(const char *argv0) 1112 { 1113 const char *make = argv0; 1114 char pathbuf[MAXPATHLEN]; 1115 1116 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) { 1117 const char *abspath = cached_realpath(argv0, pathbuf); 1118 struct stat st; 1119 if (abspath != NULL && abspath[0] == '/' && 1120 stat(make, &st) == 0) 1121 make = abspath; 1122 } 1123 1124 Global_Set("MAKE", make); 1125 Global_Set(".MAKE", make); 1126 } 1127 1128 /* 1129 * Add the directories from the colon-separated syspath to defSysIncPath. 1130 * After returning, the contents of syspath is unspecified. 1131 */ 1132 static void 1133 InitDefSysIncPath(char *syspath) 1134 { 1135 static char defsyspath[] = _PATH_DEFSYSPATH; 1136 char *start, *p; 1137 1138 /* 1139 * If no user-supplied system path was given (through the -m option) 1140 * add the directories from the DEFSYSPATH (more than one may be given 1141 * as dir1:...:dirn) to the system include path. 1142 */ 1143 if (syspath == NULL || syspath[0] == '\0') 1144 syspath = defsyspath; 1145 else 1146 syspath = bmake_strdup(syspath); 1147 1148 for (start = syspath; *start != '\0'; start = p) { 1149 for (p = start; *p != '\0' && *p != ':'; p++) 1150 continue; 1151 if (*p == ':') 1152 *p++ = '\0'; 1153 1154 /* look for magic parent directory search string */ 1155 if (strncmp(start, ".../", 4) == 0) { 1156 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1157 if (dir != NULL) { 1158 (void)SearchPath_Add(defSysIncPath, dir); 1159 free(dir); 1160 } 1161 } else { 1162 (void)SearchPath_Add(defSysIncPath, start); 1163 } 1164 } 1165 1166 if (syspath != defsyspath) 1167 free(syspath); 1168 } 1169 1170 static void 1171 ReadBuiltinRules(void) 1172 { 1173 StringListNode *ln; 1174 StringList sysMkFiles = LST_INIT; 1175 1176 SearchPath_Expand( 1177 Lst_IsEmpty(&sysIncPath->dirs) ? defSysIncPath : sysIncPath, 1178 _PATH_DEFSYSMK, 1179 &sysMkFiles); 1180 if (Lst_IsEmpty(&sysMkFiles)) 1181 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK); 1182 1183 for (ln = sysMkFiles.first; ln != NULL; ln = ln->next) 1184 if (ReadMakefile(ln->datum)) 1185 break; 1186 1187 if (ln == NULL) 1188 Fatal("%s: cannot open %s.", 1189 progname, (const char *)sysMkFiles.first->datum); 1190 1191 Lst_DoneFree(&sysMkFiles); 1192 } 1193 1194 static void 1195 InitMaxJobs(void) 1196 { 1197 char *value; 1198 int n; 1199 1200 if (forceJobs || opts.compatMake || 1201 !Var_Exists(SCOPE_GLOBAL, ".MAKE.JOBS")) 1202 return; 1203 1204 value = Var_Subst("${.MAKE.JOBS}", SCOPE_GLOBAL, VARE_EVAL); 1205 /* TODO: handle errors */ 1206 n = (int)strtol(value, NULL, 0); 1207 if (n < 1) { 1208 (void)fprintf(stderr, 1209 "%s: illegal value for .MAKE.JOBS " 1210 "-- must be positive integer!\n", 1211 progname); 1212 exit(2); /* Not 1 so -q can distinguish error */ 1213 } 1214 1215 if (n != opts.maxJobs) { 1216 Global_Append(MAKEFLAGS, "-j"); 1217 Global_Append(MAKEFLAGS, value); 1218 } 1219 1220 opts.maxJobs = n; 1221 maxJobTokens = opts.maxJobs; 1222 forceJobs = true; 1223 free(value); 1224 } 1225 1226 /* 1227 * For compatibility, look at the directories in the VPATH variable 1228 * and add them to the search path, if the variable is defined. The 1229 * variable's value is in the same format as the PATH environment 1230 * variable, i.e. <directory>:<directory>:<directory>... 1231 */ 1232 static void 1233 InitVpath(void) 1234 { 1235 char *vpath, savec, *path; 1236 if (!Var_Exists(SCOPE_CMDLINE, "VPATH")) 1237 return; 1238 1239 vpath = Var_Subst("${VPATH}", SCOPE_CMDLINE, VARE_EVAL); 1240 /* TODO: handle errors */ 1241 path = vpath; 1242 do { 1243 char *p; 1244 /* skip to end of directory */ 1245 for (p = path; *p != ':' && *p != '\0'; p++) 1246 continue; 1247 /* Save terminator character so know when to stop */ 1248 savec = *p; 1249 *p = '\0'; 1250 /* Add directory to search path */ 1251 (void)SearchPath_Add(&dirSearchPath, path); 1252 *p = savec; 1253 path = p + 1; 1254 } while (savec == ':'); 1255 free(vpath); 1256 } 1257 1258 static void 1259 ReadAllMakefiles(const StringList *makefiles) 1260 { 1261 StringListNode *ln; 1262 1263 for (ln = makefiles->first; ln != NULL; ln = ln->next) { 1264 const char *fname = ln->datum; 1265 if (!ReadMakefile(fname)) 1266 Fatal("%s: cannot open %s.", progname, fname); 1267 } 1268 } 1269 1270 static void 1271 ReadFirstDefaultMakefile(void) 1272 { 1273 StringList makefiles = LST_INIT; 1274 StringListNode *ln; 1275 char *prefs = Var_Subst("${.MAKE.MAKEFILE_PREFERENCE}", 1276 SCOPE_CMDLINE, VARE_EVAL); 1277 /* TODO: handle errors */ 1278 1279 AppendWords(&makefiles, prefs); 1280 1281 for (ln = makefiles.first; ln != NULL; ln = ln->next) 1282 if (ReadMakefile(ln->datum)) 1283 break; 1284 1285 Lst_Done(&makefiles); 1286 free(prefs); 1287 } 1288 1289 /* 1290 * Initialize variables such as MAKE, MACHINE, .MAKEFLAGS. 1291 * Initialize a few modules. 1292 * Parse the arguments from MAKEFLAGS and the command line. 1293 */ 1294 static void 1295 main_Init(int argc, char **argv) 1296 { 1297 struct stat sa; 1298 const char *machine; 1299 const char *machine_arch; 1300 char *syspath = getenv("MAKESYSPATH"); 1301 struct utsname utsname; 1302 1303 /* default to writing debug to stderr */ 1304 opts.debug_file = stderr; 1305 1306 Str_Intern_Init(); 1307 HashTable_Init(&cached_realpaths); 1308 1309 #ifdef SIGINFO 1310 (void)bmake_signal(SIGINFO, siginfo); 1311 #endif 1312 1313 InitRandom(); 1314 1315 progname = str_basename(argv[0]); 1316 1317 UnlimitFiles(); 1318 1319 if (uname(&utsname) == -1) { 1320 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1321 strerror(errno)); 1322 exit(2); 1323 } 1324 1325 machine = InitVarMachine(&utsname); 1326 machine_arch = InitVarMachineArch(); 1327 1328 myPid = getpid(); 1329 1330 /* Just in case MAKEOBJDIR wants us to do something tricky. */ 1331 Targ_Init(); 1332 Global_Set_ReadOnly(".MAKE.OS", utsname.sysname); 1333 Global_Set("MACHINE", machine); 1334 Global_Set("MACHINE_ARCH", machine_arch); 1335 #ifdef MAKE_VERSION 1336 Global_Set("MAKE_VERSION", MAKE_VERSION); 1337 #endif 1338 Global_Set_ReadOnly(".newline", "\n"); 1339 #ifndef MAKEFILE_PREFERENCE_LIST 1340 /* This is the traditional preference for makefiles. */ 1341 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1342 #endif 1343 Global_Set(".MAKE.MAKEFILE_PREFERENCE", MAKEFILE_PREFERENCE_LIST); 1344 Global_Set(".MAKE.DEPENDFILE", ".depend"); 1345 /* Tell makefiles like jobs.mk whether we support -jC */ 1346 #ifdef _SC_NPROCESSORS_ONLN 1347 Global_Set_ReadOnly(".MAKE.JOBS.C", "yes"); 1348 #else 1349 Global_Set_ReadOnly(".MAKE.JOBS.C", "no"); 1350 #endif 1351 1352 CmdOpts_Init(); 1353 allPrecious = false; /* Remove targets when interrupted */ 1354 deleteOnError = false; /* Historical default behavior */ 1355 jobsRunning = false; 1356 1357 maxJobTokens = opts.maxJobs; 1358 ignorePWD = false; 1359 1360 /* 1361 * Initialize the parsing, directory and variable modules to prepare 1362 * for the reading of inclusion paths and variable settings on the 1363 * command line 1364 */ 1365 1366 /* 1367 * Initialize various variables. 1368 * MAKE also gets this name, for compatibility 1369 * .MAKEFLAGS gets set to the empty string just in case. 1370 * MFLAGS also gets initialized empty, for compatibility. 1371 */ 1372 Parse_Init(); 1373 InitVarMake(argv[0]); 1374 Global_Set(MAKEFLAGS, ""); 1375 Global_Set(".MAKEOVERRIDES", ""); 1376 Global_Set("MFLAGS", ""); 1377 Global_Set(".ALLTARGETS", ""); 1378 Global_Set_ReadOnly(".MAKE.LEVEL.ENV", MAKE_LEVEL_ENV); 1379 1380 /* Set some other useful variables. */ 1381 { 1382 char buf[64]; 1383 const char *ep = getenv(MAKE_LEVEL_ENV); 1384 1385 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0; 1386 if (makelevel < 0) 1387 makelevel = 0; 1388 snprintf(buf, sizeof buf, "%d", makelevel); 1389 Global_Set(".MAKE.LEVEL", buf); 1390 snprintf(buf, sizeof buf, "%u", myPid); 1391 Global_Set_ReadOnly(".MAKE.PID", buf); 1392 snprintf(buf, sizeof buf, "%u", getppid()); 1393 Global_Set_ReadOnly(".MAKE.PPID", buf); 1394 snprintf(buf, sizeof buf, "%u", getuid()); 1395 Global_Set_ReadOnly(".MAKE.UID", buf); 1396 snprintf(buf, sizeof buf, "%u", getgid()); 1397 Global_Set_ReadOnly(".MAKE.GID", buf); 1398 } 1399 if (makelevel > 0) { 1400 char pn[1024]; 1401 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel); 1402 progname = bmake_strdup(pn); 1403 } 1404 1405 #ifdef USE_META 1406 meta_init(); 1407 #endif 1408 Dir_Init(); 1409 1410 { 1411 char *makeflags = explode(getenv("MAKEFLAGS")); 1412 Main_ParseArgLine(makeflags); 1413 free(makeflags); 1414 } 1415 1416 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1417 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1418 progname, strerror(errno)); 1419 exit(2); 1420 } 1421 1422 MainParseArgs(argc, argv); 1423 1424 if (opts.enterFlag) 1425 printf("%s: Entering directory `%s'\n", progname, curdir); 1426 1427 if (stat(curdir, &sa) == -1) { 1428 (void)fprintf(stderr, "%s: %s: %s.\n", 1429 progname, curdir, strerror(errno)); 1430 exit(2); 1431 } 1432 1433 #ifndef NO_PWD_OVERRIDE 1434 HandlePWD(&sa); 1435 #endif 1436 Global_Set(".CURDIR", curdir); 1437 1438 InitObjdir(machine, machine_arch); 1439 1440 Arch_Init(); 1441 Suff_Init(); 1442 Trace_Init(tracefile); 1443 1444 defaultNode = NULL; 1445 (void)time(&now); 1446 1447 Trace_Log(MAKESTART, NULL); 1448 1449 InitVarTargets(); 1450 1451 InitDefSysIncPath(syspath); 1452 } 1453 1454 /* 1455 * Read the system makefile followed by either makefile, Makefile or the 1456 * files given by the -f option. Exit on parse errors. 1457 */ 1458 static void 1459 main_ReadFiles(void) 1460 { 1461 1462 if (Lst_IsEmpty(&sysIncPath->dirs)) 1463 SearchPath_AddAll(sysIncPath, defSysIncPath); 1464 1465 Dir_SetSYSPATH(); 1466 if (!opts.noBuiltins) 1467 ReadBuiltinRules(); 1468 1469 posix_state = PS_MAYBE_NEXT_LINE; 1470 if (!Lst_IsEmpty(&opts.makefiles)) 1471 ReadAllMakefiles(&opts.makefiles); 1472 else 1473 ReadFirstDefaultMakefile(); 1474 } 1475 1476 /* Compute the dependency graph. */ 1477 static void 1478 main_PrepareMaking(void) 1479 { 1480 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1481 if (!opts.noBuiltins || opts.printVars == PVM_NONE) { 1482 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE}", 1483 SCOPE_CMDLINE, VARE_EVAL); 1484 if (makeDependfile[0] != '\0') { 1485 /* TODO: handle errors */ 1486 doing_depend = true; 1487 (void)ReadMakefile(makeDependfile); 1488 doing_depend = false; 1489 } 1490 } 1491 1492 if (enterFlagObj) 1493 printf("%s: Entering directory `%s'\n", progname, objdir); 1494 1495 MakeMode(); 1496 1497 { 1498 FStr makeflags = Var_Value(SCOPE_GLOBAL, MAKEFLAGS); 1499 Global_Append("MFLAGS", makeflags.str); 1500 FStr_Done(&makeflags); 1501 } 1502 1503 InitMaxJobs(); 1504 1505 if (!opts.compatMake && !forceJobs) 1506 opts.compatMake = true; 1507 1508 if (!opts.compatMake) 1509 TokenPool_Init(maxJobTokens, tokenPoolReader, tokenPoolWriter); 1510 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1511 tokenPoolReader, tokenPoolWriter, opts.maxJobs, maxJobTokens, 1512 opts.compatMake ? 1 : 0); 1513 1514 if (opts.printVars == PVM_NONE) 1515 Main_ExportMAKEFLAGS(true); /* initial export */ 1516 1517 InitVpath(); 1518 1519 /* 1520 * Now that all search paths have been read for suffixes et al, it's 1521 * time to add the default search path to their lists... 1522 */ 1523 Suff_ExtendPaths(); 1524 1525 /* 1526 * Propagate attributes through :: dependency lists. 1527 */ 1528 Targ_Propagate(); 1529 1530 /* print the initial graph, if the user requested it */ 1531 if (DEBUG(GRAPH1)) 1532 Targ_PrintGraph(1); 1533 } 1534 1535 /* 1536 * Make the targets, or print variables. 1537 * Return whether any of the targets is out-of-date. 1538 */ 1539 static bool 1540 main_Run(void) 1541 { 1542 if (opts.printVars != PVM_NONE) { 1543 doPrintVars(); 1544 return false; 1545 } else { 1546 return runTargets(); 1547 } 1548 } 1549 1550 /* Clean up after making the targets. */ 1551 static void 1552 main_CleanUp(void) 1553 { 1554 #ifdef CLEANUP 1555 Lst_DoneFree(&opts.variables); 1556 Lst_DoneFree(&opts.makefiles); 1557 Lst_DoneFree(&opts.create); 1558 #endif 1559 1560 if (DEBUG(GRAPH2)) 1561 Targ_PrintGraph(2); 1562 1563 Trace_Log(MAKEEND, NULL); 1564 1565 if (enterFlagObj) 1566 printf("%s: Leaving directory `%s'\n", progname, objdir); 1567 if (opts.enterFlag) 1568 printf("%s: Leaving directory `%s'\n", progname, curdir); 1569 1570 Var_Stats(); 1571 Targ_Stats(); 1572 1573 #ifdef USE_META 1574 meta_finish(); 1575 #endif 1576 #ifdef CLEANUP 1577 Suff_End(); 1578 Targ_End(); 1579 Arch_End(); 1580 Parse_End(); 1581 Dir_End(); 1582 Job_End(); 1583 #endif 1584 Trace_End(); 1585 #ifdef CLEANUP 1586 Str_Intern_End(); 1587 #endif 1588 } 1589 1590 /* Determine the exit code. */ 1591 static int 1592 main_Exit(bool outOfDate) 1593 { 1594 if ((opts.strict && main_errors > 0) || parseErrors > 0) 1595 return 2; /* Not 1 so -q can distinguish error */ 1596 return outOfDate ? 1 : 0; 1597 } 1598 1599 int 1600 main(int argc, char **argv) 1601 { 1602 bool outOfDate; 1603 1604 main_Init(argc, argv); 1605 main_ReadFiles(); 1606 main_PrepareMaking(); 1607 outOfDate = main_Run(); 1608 main_CleanUp(); 1609 return main_Exit(outOfDate); 1610 } 1611 1612 /* 1613 * Open and parse the given makefile, with all its side effects. 1614 * Return false if the file could not be opened. 1615 */ 1616 static bool 1617 ReadMakefile(const char *fname) 1618 { 1619 int fd; 1620 char *name, *path = NULL; 1621 1622 if (strcmp(fname, "-") == 0) { 1623 Parse_File("(stdin)", -1); 1624 Var_Set(SCOPE_INTERNAL, "MAKEFILE", ""); 1625 } else { 1626 if (strncmp(fname, ".../", 4) == 0) { 1627 name = Dir_FindHereOrAbove(curdir, fname + 4); 1628 if (name != NULL) { 1629 /* Dir_FindHereOrAbove returns dirname */ 1630 path = str_concat3(name, "/", 1631 str_basename(fname)); 1632 free(name); 1633 fd = open(path, O_RDONLY); 1634 if (fd != -1) { 1635 fname = path; 1636 goto found; 1637 } 1638 } 1639 } 1640 /* if we've chdir'd, rebuild the path name */ 1641 if (strcmp(curdir, objdir) != 0 && *fname != '/') { 1642 path = str_concat3(curdir, "/", fname); 1643 fd = open(path, O_RDONLY); 1644 if (fd != -1) { 1645 fname = path; 1646 goto found; 1647 } 1648 free(path); 1649 1650 /* If curdir failed, try objdir (ala .depend) */ 1651 path = str_concat3(objdir, "/", fname); 1652 fd = open(path, O_RDONLY); 1653 if (fd != -1) { 1654 fname = path; 1655 goto found; 1656 } 1657 } else { 1658 fd = open(fname, O_RDONLY); 1659 if (fd != -1) 1660 goto found; 1661 } 1662 /* look in -I and system include directories. */ 1663 name = Dir_FindFile(fname, parseIncPath); 1664 if (name == NULL) { 1665 SearchPath *sysInc = Lst_IsEmpty(&sysIncPath->dirs) 1666 ? defSysIncPath : sysIncPath; 1667 name = Dir_FindFile(fname, sysInc); 1668 } 1669 if (name == NULL || (fd = open(name, O_RDONLY)) == -1) { 1670 free(name); 1671 free(path); 1672 return false; 1673 } 1674 fname = name; 1675 /* 1676 * set the MAKEFILE variable desired by System V fans -- the 1677 * placement of the setting here means it gets set to the last 1678 * makefile specified, as it is set by SysV make. 1679 */ 1680 found: 1681 if (!doing_depend) 1682 Var_Set(SCOPE_INTERNAL, "MAKEFILE", fname); 1683 Parse_File(fname, fd); 1684 } 1685 free(path); 1686 return true; 1687 } 1688 1689 /* populate av for Cmd_Exec and Compat_RunCommand */ 1690 int 1691 Cmd_Argv(const char *cmd, size_t cmd_len, const char **av, size_t avsz, 1692 char *cmd_file, size_t cmd_filesz, bool eflag, bool xflag) 1693 { 1694 int ac = 0; 1695 int cmd_fd = -1; 1696 1697 if (shellPath == NULL) 1698 Shell_Init(); 1699 1700 if (cmd_file != NULL) { 1701 if (cmd_len == 0) 1702 cmd_len = strlen(cmd); 1703 1704 if (cmd_len > MAKE_CMDLEN_LIMIT) { 1705 cmd_fd = mkTempFile(NULL, cmd_file, cmd_filesz); 1706 if (cmd_fd >= 0) { 1707 ssize_t n; 1708 1709 n = write(cmd_fd, cmd, cmd_len); 1710 close(cmd_fd); 1711 if (n < (ssize_t)cmd_len) { 1712 unlink(cmd_file); 1713 cmd_fd = -1; 1714 } 1715 } 1716 } else 1717 cmd_file[0] = '\0'; 1718 } 1719 1720 if (avsz < 4 || (eflag && avsz < 5)) 1721 return -1; 1722 1723 /* The following works for any of the builtin shell specs. */ 1724 av[ac++] = shellPath; 1725 if (eflag) 1726 av[ac++] = shellErrFlag; 1727 if (cmd_fd >= 0) { 1728 if (xflag) 1729 av[ac++] = "-x"; 1730 av[ac++] = cmd_file; 1731 } else { 1732 av[ac++] = xflag ? "-xc" : "-c"; 1733 av[ac++] = cmd; 1734 } 1735 av[ac] = NULL; 1736 return ac; 1737 } 1738 1739 /* 1740 * Execute the command in cmd, and return its output (only stdout, not 1741 * stderr, possibly empty). In the output, replace newlines with spaces. 1742 */ 1743 char * 1744 Cmd_Exec(const char *cmd, char **error) 1745 { 1746 const char *args[4]; /* Arguments for invoking the shell */ 1747 int pipefds[2]; 1748 int cpid; /* Child PID */ 1749 int pid; /* PID from wait() */ 1750 int status; /* command exit status */ 1751 Buffer buf; /* buffer to store the result */ 1752 ssize_t bytes_read; 1753 char *output; 1754 char *p; 1755 int saved_errno; 1756 char cmd_file[MAXPATHLEN]; 1757 1758 DEBUG1(VAR, "Capturing the output of command \"%s\"\n", cmd); 1759 1760 if (Cmd_Argv(cmd, 0, args, 4, cmd_file, sizeof(cmd_file), false, false) < 0 1761 || pipe(pipefds) == -1) { 1762 *error = str_concat3( 1763 "Couldn't create pipe for \"", cmd, "\""); 1764 return bmake_strdup(""); 1765 } 1766 1767 Var_ReexportVars(SCOPE_GLOBAL); 1768 1769 switch (cpid = FORK_FUNCTION()) { 1770 case 0: 1771 (void)close(pipefds[0]); 1772 (void)dup2(pipefds[1], STDOUT_FILENO); 1773 (void)close(pipefds[1]); 1774 1775 (void)execv(shellPath, UNCONST(args)); 1776 _exit(1); 1777 /* NOTREACHED */ 1778 1779 case -1: 1780 *error = str_concat3("Couldn't exec \"", cmd, "\""); 1781 return bmake_strdup(""); 1782 } 1783 1784 (void)close(pipefds[1]); /* No need for the writing half */ 1785 1786 saved_errno = 0; 1787 Buf_Init(&buf); 1788 1789 do { 1790 char result[BUFSIZ]; 1791 bytes_read = read(pipefds[0], result, sizeof result); 1792 if (bytes_read > 0) 1793 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1794 } while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1795 if (bytes_read == -1) 1796 saved_errno = errno; 1797 1798 (void)close(pipefds[0]); /* Close the input side of the pipe. */ 1799 1800 while ((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0) 1801 JobReapChild(pid, status, false); 1802 1803 if (Buf_EndsWith(&buf, '\n')) 1804 buf.data[buf.len - 1] = '\0'; 1805 1806 output = Buf_DoneData(&buf); 1807 for (p = output; *p != '\0'; p++) 1808 if (*p == '\n') 1809 *p = ' '; 1810 1811 if (WIFSIGNALED(status)) 1812 *error = str_concat3("\"", cmd, "\" exited on a signal"); 1813 else if (WEXITSTATUS(status) != 0) { 1814 Buffer errBuf; 1815 Buf_Init(&errBuf); 1816 Buf_AddStr(&errBuf, "Command \""); 1817 Buf_AddStr(&errBuf, cmd); 1818 Buf_AddStr(&errBuf, "\" exited with status "); 1819 Buf_AddInt(&errBuf, WEXITSTATUS(status)); 1820 *error = Buf_DoneData(&errBuf); 1821 } else if (saved_errno != 0) 1822 *error = str_concat3( 1823 "Couldn't read shell's output for \"", cmd, "\""); 1824 else 1825 *error = NULL; 1826 if (cmd_file[0] != '\0') 1827 unlink(cmd_file); 1828 return output; 1829 } 1830 1831 /* 1832 * Print a printf-style error message. 1833 * 1834 * In default mode, this error message has no consequences, for compatibility 1835 * reasons, in particular it does not affect the exit status. Only in lint 1836 * mode (-dL) it does. 1837 */ 1838 void 1839 Error(const char *fmt, ...) 1840 { 1841 va_list ap; 1842 FILE *f; 1843 1844 f = opts.debug_file; 1845 if (f == stdout) 1846 f = stderr; 1847 (void)fflush(stdout); 1848 1849 for (;;) { 1850 fprintf(f, "%s: ", progname); 1851 va_start(ap, fmt); 1852 (void)vfprintf(f, fmt, ap); 1853 va_end(ap); 1854 (void)fprintf(f, "\n"); 1855 (void)fflush(f); 1856 if (f == stderr) 1857 break; 1858 f = stderr; 1859 } 1860 main_errors++; 1861 } 1862 1863 /* 1864 * Wait for any running jobs to finish, then produce an error message, 1865 * finally exit immediately. 1866 * 1867 * Exiting immediately differs from Parse_Error, which exits only after the 1868 * current top-level makefile has been parsed completely. 1869 */ 1870 void 1871 Fatal(const char *fmt, ...) 1872 { 1873 va_list ap; 1874 1875 if (jobsRunning) 1876 Job_Wait(); 1877 1878 (void)fflush(stdout); 1879 fprintf(stderr, "%s: ", progname); 1880 va_start(ap, fmt); 1881 (void)vfprintf(stderr, fmt, ap); 1882 va_end(ap); 1883 (void)fprintf(stderr, "\n"); 1884 (void)fflush(stderr); 1885 PrintStackTrace(true); 1886 1887 PrintOnError(NULL, "\n"); 1888 1889 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1890 Targ_PrintGraph(2); 1891 Trace_Log(MAKEERROR, NULL); 1892 exit(2); /* Not 1 so -q can distinguish error */ 1893 } 1894 1895 /* 1896 * Major exception once jobs are being created. 1897 * Kills all jobs, prints a message and exits. 1898 */ 1899 void 1900 Punt(const char *fmt, ...) 1901 { 1902 va_list ap; 1903 1904 (void)fflush(stdout); 1905 (void)fprintf(stderr, "%s: ", progname); 1906 va_start(ap, fmt); 1907 (void)vfprintf(stderr, fmt, ap); 1908 va_end(ap); 1909 (void)fprintf(stderr, "\n"); 1910 (void)fflush(stderr); 1911 1912 PrintOnError(NULL, "\n"); 1913 1914 DieHorribly(); 1915 } 1916 1917 /* Exit without giving a message. */ 1918 void 1919 DieHorribly(void) 1920 { 1921 if (jobsRunning) 1922 Job_AbortAll(); 1923 if (DEBUG(GRAPH2)) 1924 Targ_PrintGraph(2); 1925 Trace_Log(MAKEERROR, NULL); 1926 exit(2); /* Not 1 so -q can distinguish error */ 1927 } 1928 1929 int 1930 unlink_file(const char *file) 1931 { 1932 struct stat st; 1933 1934 if (lstat(file, &st) == -1) 1935 return -1; 1936 1937 if (S_ISDIR(st.st_mode)) { 1938 /* 1939 * POSIX says for unlink: "The path argument shall not name 1940 * a directory unless [...]". 1941 */ 1942 errno = EISDIR; 1943 return -1; 1944 } 1945 return unlink(file); 1946 } 1947 1948 static void 1949 write_all(int fd, const void *data, size_t n) 1950 { 1951 const char *mem = data; 1952 1953 while (n > 0) { 1954 ssize_t written = write(fd, mem, n); 1955 /* XXX: Should this EAGAIN be EINTR? */ 1956 if (written == -1 && errno == EAGAIN) 1957 continue; 1958 if (written == -1) 1959 break; 1960 mem += written; 1961 n -= (size_t)written; 1962 } 1963 } 1964 1965 /* Print why exec failed, avoiding stdio. */ 1966 void MAKE_ATTR_DEAD 1967 execDie(const char *func, const char *arg) 1968 { 1969 char msg[1024]; 1970 int len; 1971 1972 len = snprintf(msg, sizeof(msg), "%s: %s(%s) failed (%s)\n", 1973 progname, func, arg, strerror(errno)); 1974 write_all(STDERR_FILENO, msg, (size_t)len); 1975 _exit(1); 1976 } 1977 1978 static void 1979 purge_relative_cached_realpaths(void) 1980 { 1981 HashIter hi; 1982 bool more; 1983 1984 HashIter_Init(&hi, &cached_realpaths); 1985 more = HashIter_Next(&hi); 1986 while (more) { 1987 HashEntry *he = hi.entry; 1988 more = HashIter_Next(&hi); 1989 if (he->key[0] != '/') { 1990 DEBUG1(DIR, "cached_realpath: purging %s\n", he->key); 1991 free(he->value); 1992 HashTable_DeleteEntry(&cached_realpaths, he); 1993 } 1994 } 1995 } 1996 1997 const char * 1998 cached_realpath(const char *pathname, char *resolved) 1999 { 2000 const char *rp; 2001 2002 if (pathname == NULL || pathname[0] == '\0') 2003 return NULL; 2004 2005 rp = HashTable_FindValue(&cached_realpaths, pathname); 2006 if (rp != NULL) { 2007 snprintf(resolved, MAXPATHLEN, "%s", rp); 2008 return resolved; 2009 } 2010 2011 rp = realpath(pathname, resolved); 2012 if (rp != NULL) { 2013 HashTable_Set(&cached_realpaths, pathname, bmake_strdup(rp)); 2014 DEBUG2(DIR, "cached_realpath: %s -> %s\n", pathname, rp); 2015 return resolved; 2016 } 2017 2018 /* should we negative-cache? */ 2019 return NULL; 2020 } 2021 2022 /* 2023 * Return true if we should die without noise. 2024 * For example our failing child was a sub-make or failure happened elsewhere. 2025 */ 2026 bool 2027 shouldDieQuietly(GNode *gn, int bf) 2028 { 2029 static int quietly = -1; 2030 2031 if (quietly < 0) { 2032 if (DEBUG(JOB) || 2033 !GetBooleanExpr("${.MAKE.DIE_QUIETLY}", true)) 2034 quietly = 0; 2035 else if (bf >= 0) 2036 quietly = bf; 2037 else 2038 quietly = (gn != NULL && (gn->type & OP_MAKE)) ? 1 : 0; 2039 } 2040 return quietly != 0; 2041 } 2042 2043 static void 2044 SetErrorVars(GNode *gn) 2045 { 2046 StringListNode *ln; 2047 char sts[16]; 2048 2049 /* 2050 * We can print this even if there is no .ERROR target. 2051 */ 2052 snprintf(sts, sizeof(sts), "%d", gn->exit_status); 2053 Global_Set(".ERROR_EXIT", sts); 2054 Global_Set(".ERROR_TARGET", gn->name); 2055 Global_Delete(".ERROR_CMD"); 2056 2057 for (ln = gn->commands.first; ln != NULL; ln = ln->next) { 2058 const char *cmd = ln->datum; 2059 2060 if (cmd == NULL) 2061 break; 2062 Global_Append(".ERROR_CMD", cmd); 2063 } 2064 } 2065 2066 /* 2067 * Print some helpful information in case of an error. 2068 * The caller should exit soon after calling this function. 2069 */ 2070 void 2071 PrintOnError(GNode *gn, const char *msg) 2072 { 2073 static GNode *errorNode = NULL; 2074 StringListNode *ln; 2075 2076 if (DEBUG(HASH)) { 2077 Targ_Stats(); 2078 Var_Stats(); 2079 } 2080 2081 if (errorNode != NULL) 2082 return; /* we've been here! */ 2083 2084 printf("%s%s: stopped", msg, progname); 2085 ln = opts.create.first; 2086 if (ln != NULL || mainNode != NULL) { 2087 printf(" making \""); 2088 if (ln != NULL) { 2089 printf("%s", (const char *)ln->datum); 2090 for (ln = ln->next; ln != NULL; ln = ln->next) 2091 printf(" %s", (const char *)ln->datum); 2092 } else 2093 printf("%s", mainNode->name); 2094 printf("\""); 2095 } 2096 printf(" in %s\n", curdir); 2097 2098 /* we generally want to keep quiet if a sub-make died */ 2099 if (shouldDieQuietly(gn, -1)) 2100 return; 2101 2102 if (gn != NULL) 2103 SetErrorVars(gn); 2104 2105 { 2106 char *errorVarsValues; 2107 enum PosixState p_s = posix_state; 2108 2109 posix_state = PS_TOO_LATE; 2110 errorVarsValues = Var_Subst( 2111 "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2112 SCOPE_GLOBAL, VARE_EVAL); 2113 /* TODO: handle errors */ 2114 printf("%s", errorVarsValues); 2115 free(errorVarsValues); 2116 posix_state = p_s; 2117 } 2118 2119 fflush(stdout); 2120 2121 /* 2122 * Finally, see if there is a .ERROR target, and run it if so. 2123 */ 2124 errorNode = Targ_FindNode(".ERROR"); 2125 if (errorNode != NULL) { 2126 errorNode->type |= OP_SPECIAL; 2127 Compat_Make(errorNode, errorNode); 2128 } 2129 } 2130 2131 void 2132 Main_ExportMAKEFLAGS(bool first) 2133 { 2134 static bool once = true; 2135 enum PosixState p_s; 2136 char *flags; 2137 2138 if (once != first) 2139 return; 2140 once = false; 2141 2142 p_s = posix_state; 2143 posix_state = PS_TOO_LATE; 2144 flags = Var_Subst( 2145 "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 2146 SCOPE_CMDLINE, VARE_EVAL); 2147 /* TODO: handle errors */ 2148 if (flags[0] != '\0') 2149 setenv("MAKEFLAGS", flags, 1); 2150 free(flags); 2151 posix_state = p_s; 2152 } 2153 2154 char * 2155 getTmpdir(void) 2156 { 2157 static char *tmpdir = NULL; 2158 struct stat st; 2159 2160 if (tmpdir != NULL) 2161 return tmpdir; 2162 2163 /* Honor $TMPDIR if it is valid, strip a trailing '/'. */ 2164 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP ":S,/$,,W}/", 2165 SCOPE_GLOBAL, VARE_EVAL); 2166 /* TODO: handle errors */ 2167 2168 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2169 free(tmpdir); 2170 tmpdir = bmake_strdup(_PATH_TMP); 2171 } 2172 return tmpdir; 2173 } 2174 2175 /* 2176 * Create and open a temp file using "pattern". 2177 * If tfile is provided, set it to a copy of the filename created. 2178 * Otherwise unlink the file once open. 2179 */ 2180 int 2181 mkTempFile(const char *pattern, char *tfile, size_t tfile_sz) 2182 { 2183 static char *tmpdir = NULL; 2184 char tbuf[MAXPATHLEN]; 2185 int fd; 2186 2187 if (pattern == NULL) 2188 pattern = "makeXXXXXX"; 2189 if (tmpdir == NULL) 2190 tmpdir = getTmpdir(); 2191 if (tfile == NULL) { 2192 tfile = tbuf; 2193 tfile_sz = sizeof tbuf; 2194 } 2195 2196 if (pattern[0] == '/') 2197 snprintf(tfile, tfile_sz, "%s", pattern); 2198 else 2199 snprintf(tfile, tfile_sz, "%s%s", tmpdir, pattern); 2200 2201 if ((fd = mkstemp(tfile)) < 0) 2202 Punt("Could not create temporary file %s: %s", tfile, 2203 strerror(errno)); 2204 if (tfile == tbuf) 2205 unlink(tfile); /* we just want the descriptor */ 2206 2207 return fd; 2208 } 2209 2210 /* 2211 * Convert a string representation of a boolean into a boolean value. 2212 * Anything that looks like "No", "False", "Off", "0" etc. is false, 2213 * the empty string is the fallback, everything else is true. 2214 */ 2215 bool 2216 ParseBoolean(const char *s, bool fallback) 2217 { 2218 char ch = ch_tolower(s[0]); 2219 if (ch == '\0') 2220 return fallback; 2221 if (ch == '0' || ch == 'f' || ch == 'n') 2222 return false; 2223 if (ch == 'o') 2224 return ch_tolower(s[1]) != 'f'; 2225 return true; 2226 } 2227
Indexes created Wed Sep 24 05:09:52 GMT 2025