main.c revision 1.620
1 /* $NetBSD: main.c,v 1.620 2024/06/01 07:37:19 sjg 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 * Finish Finish things up by printing the number of errors 88 * that occurred, and exit. 89 */ 90 91 #include <sys/types.h> 92 #include <sys/time.h> 93 #include <sys/param.h> 94 #include <sys/resource.h> 95 #include <sys/stat.h> 96 #ifdef MAKE_NATIVE 97 #include <sys/sysctl.h> 98 #endif 99 #include <sys/utsname.h> 100 #include <sys/wait.h> 101 102 #include <errno.h> 103 #include <signal.h> 104 #include <stdarg.h> 105 #include <time.h> 106 107 #include "make.h" 108 #include "dir.h" 109 #include "job.h" 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 1.620 2024/06/01 07:37:19 sjg 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 jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 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 strncpy(curdir, argvalue, MAXPATHLEN); 372 ignorePWD = true; 373 } 374 375 static void 376 MainParseArgJobsInternal(const char *argvalue) 377 { 378 char end; 379 if (sscanf(argvalue, "%d,%d%c", &jp_0, &jp_1, &end) != 2) { 380 (void)fprintf(stderr, 381 "%s: internal error -- J option malformed (%s)\n", 382 progname, argvalue); 383 usage(); 384 } 385 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 386 (fcntl(jp_1, F_GETFD, 0) < 0)) { 387 jp_0 = -1; 388 jp_1 = -1; 389 opts.compatMake = true; 390 } else { 391 Global_Append(MAKEFLAGS, "-J"); 392 Global_Append(MAKEFLAGS, argvalue); 393 } 394 } 395 396 static void 397 MainParseArgJobs(const char *arg) 398 { 399 const char *p; 400 char *end; 401 char v[12]; 402 403 forceJobs = true; 404 opts.maxJobs = (int)strtol(arg, &end, 0); 405 p = end; 406 #ifdef _SC_NPROCESSORS_ONLN 407 if (*p != '\0') { 408 double d; 409 410 if (*p == 'C') 411 d = (opts.maxJobs > 0) ? opts.maxJobs : 1; 412 else if (*p == '.') { 413 d = strtod(arg, &end); 414 p = end; 415 } else 416 d = 0.0; 417 if (d > 0.0) { 418 p = ""; 419 opts.maxJobs = (int)sysconf(_SC_NPROCESSORS_ONLN); 420 opts.maxJobs = (int)(d * (double)opts.maxJobs); 421 } 422 } 423 #endif 424 if (*p != '\0' || opts.maxJobs < 1) { 425 (void)fprintf(stderr, 426 "%s: argument '%s' to option '-j' " 427 "must be a positive number\n", 428 progname, arg); 429 exit(2); /* Not 1 so -q can distinguish error */ 430 } 431 snprintf(v, sizeof(v), "%d", opts.maxJobs); 432 Global_Append(MAKEFLAGS, "-j"); 433 Global_Append(MAKEFLAGS, v); 434 Global_Set(".MAKE.JOBS", v); 435 maxJobTokens = opts.maxJobs; 436 } 437 438 static void 439 MainParseArgSysInc(const char *argvalue) 440 { 441 if (strncmp(argvalue, ".../", 4) == 0) { 442 char *found_path = Dir_FindHereOrAbove(curdir, argvalue + 4); 443 if (found_path == NULL) 444 return; 445 (void)SearchPath_Add(sysIncPath, found_path); 446 free(found_path); 447 } else { 448 (void)SearchPath_Add(sysIncPath, argvalue); 449 } 450 Global_Append(MAKEFLAGS, "-m"); 451 Global_Append(MAKEFLAGS, argvalue); 452 Dir_SetSYSPATH(); 453 } 454 455 static bool 456 MainParseOption(char c, const char *argvalue) 457 { 458 switch (c) { 459 case '\0': 460 break; 461 case 'B': 462 opts.compatMake = true; 463 Global_Append(MAKEFLAGS, "-B"); 464 Global_Set(".MAKE.MODE", "compat"); 465 break; 466 case 'C': 467 MainParseArgChdir(argvalue); 468 break; 469 case 'D': 470 if (argvalue[0] == '\0') 471 return false; 472 Var_SetExpand(SCOPE_GLOBAL, argvalue, "1"); 473 Global_Append(MAKEFLAGS, "-D"); 474 Global_Append(MAKEFLAGS, argvalue); 475 break; 476 case 'I': 477 SearchPath_Add(parseIncPath, argvalue); 478 Global_Append(MAKEFLAGS, "-I"); 479 Global_Append(MAKEFLAGS, argvalue); 480 break; 481 case 'J': 482 MainParseArgJobsInternal(argvalue); 483 break; 484 case 'N': 485 opts.noExecute = true; 486 opts.noRecursiveExecute = true; 487 Global_Append(MAKEFLAGS, "-N"); 488 break; 489 case 'S': 490 opts.keepgoing = false; 491 Global_Append(MAKEFLAGS, "-S"); 492 break; 493 case 'T': 494 tracefile = bmake_strdup(argvalue); 495 Global_Append(MAKEFLAGS, "-T"); 496 Global_Append(MAKEFLAGS, argvalue); 497 break; 498 case 'V': 499 case 'v': 500 opts.printVars = c == 'v' ? PVM_EXPANDED : PVM_UNEXPANDED; 501 Lst_Append(&opts.variables, bmake_strdup(argvalue)); 502 /* XXX: Why always -V? */ 503 Global_Append(MAKEFLAGS, "-V"); 504 Global_Append(MAKEFLAGS, argvalue); 505 break; 506 case 'W': 507 opts.parseWarnFatal = true; 508 /* XXX: why no Global_Append? */ 509 break; 510 case 'X': 511 opts.varNoExportEnv = true; 512 Global_Append(MAKEFLAGS, "-X"); 513 break; 514 case 'd': 515 /* If '-d-opts' don't pass to children */ 516 if (argvalue[0] == '-') 517 argvalue++; 518 else { 519 Global_Append(MAKEFLAGS, "-d"); 520 Global_Append(MAKEFLAGS, argvalue); 521 } 522 MainParseArgDebug(argvalue); 523 break; 524 case 'e': 525 opts.checkEnvFirst = true; 526 Global_Append(MAKEFLAGS, "-e"); 527 break; 528 case 'f': 529 Lst_Append(&opts.makefiles, bmake_strdup(argvalue)); 530 break; 531 case 'i': 532 opts.ignoreErrors = true; 533 Global_Append(MAKEFLAGS, "-i"); 534 break; 535 case 'j': 536 MainParseArgJobs(argvalue); 537 break; 538 case 'k': 539 opts.keepgoing = true; 540 Global_Append(MAKEFLAGS, "-k"); 541 break; 542 case 'm': 543 MainParseArgSysInc(argvalue); 544 /* XXX: why no Var_Append? */ 545 break; 546 case 'n': 547 opts.noExecute = true; 548 Global_Append(MAKEFLAGS, "-n"); 549 break; 550 case 'q': 551 opts.query = true; 552 /* Kind of nonsensical, wot? */ 553 Global_Append(MAKEFLAGS, "-q"); 554 break; 555 case 'r': 556 opts.noBuiltins = true; 557 Global_Append(MAKEFLAGS, "-r"); 558 break; 559 case 's': 560 opts.silent = true; 561 Global_Append(MAKEFLAGS, "-s"); 562 break; 563 case 't': 564 opts.touch = true; 565 Global_Append(MAKEFLAGS, "-t"); 566 break; 567 case 'w': 568 opts.enterFlag = true; 569 Global_Append(MAKEFLAGS, "-w"); 570 break; 571 default: 572 usage(); 573 } 574 return true; 575 } 576 577 /* 578 * Parse the given arguments. Called from main() and from 579 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 580 * 581 * The arguments must be treated as read-only and will be freed after the 582 * call. 583 * 584 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 585 */ 586 static void 587 MainParseArgs(int argc, char **argv) 588 { 589 char c; 590 int arginc; 591 char *argvalue; 592 char *optscan; 593 bool inOption, dashDash = false; 594 595 const char *optspecs = "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w"; 596 /* Can't actually use getopt(3) because rescanning is not portable */ 597 598 rearg: 599 inOption = false; 600 optscan = NULL; 601 while (argc > 1) { 602 const char *optspec; 603 if (!inOption) 604 optscan = argv[1]; 605 c = *optscan++; 606 arginc = 0; 607 if (inOption) { 608 if (c == '\0') { 609 argv++; 610 argc--; 611 inOption = false; 612 continue; 613 } 614 } else { 615 if (c != '-' || dashDash) 616 break; 617 inOption = true; 618 c = *optscan++; 619 } 620 /* '-' found at some earlier point */ 621 optspec = strchr(optspecs, c); 622 if (c != '\0' && optspec != NULL && optspec[1] == ':') { 623 /* 624 * -<something> found, and <something> should have an 625 * argument 626 */ 627 inOption = false; 628 arginc = 1; 629 argvalue = optscan; 630 if (*argvalue == '\0') { 631 if (argc < 3) 632 goto noarg; 633 argvalue = argv[2]; 634 arginc = 2; 635 } 636 } else { 637 argvalue = NULL; 638 } 639 switch (c) { 640 case '\0': 641 arginc = 1; 642 inOption = false; 643 break; 644 case '-': 645 dashDash = true; 646 break; 647 default: 648 if (!MainParseOption(c, argvalue)) 649 goto noarg; 650 } 651 argv += arginc; 652 argc -= arginc; 653 } 654 655 /* 656 * See if the rest of the arguments are variable assignments and 657 * perform them if so. Else take them to be targets and stuff them 658 * on the end of the "create" list. 659 */ 660 for (; argc > 1; argv++, argc--) { 661 if (!Parse_VarAssign(argv[1], false, SCOPE_CMDLINE)) { 662 if (argv[1][0] == '\0') 663 Punt("illegal (null) argument."); 664 if (argv[1][0] == '-' && !dashDash) 665 goto rearg; 666 Lst_Append(&opts.create, bmake_strdup(argv[1])); 667 } 668 } 669 670 return; 671 noarg: 672 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 673 progname, c); 674 usage(); 675 } 676 677 /* 678 * Break a line of arguments into words and parse them. 679 * 680 * Used when a .MFLAGS or .MAKEFLAGS target is encountered during parsing and 681 * by main() when reading the MAKEFLAGS environment variable. 682 */ 683 void 684 Main_ParseArgLine(const char *line) 685 { 686 Words words; 687 char *buf; 688 const char *p; 689 690 if (line == NULL) 691 return; 692 for (p = line; *p == ' '; p++) 693 continue; 694 if (p[0] == '\0') 695 return; 696 697 { 698 FStr argv0 = Var_Value(SCOPE_GLOBAL, ".MAKE"); 699 buf = str_concat3(argv0.str, " ", p); 700 FStr_Done(&argv0); 701 } 702 703 words = Str_Words(buf, true); 704 if (words.words == NULL) { 705 Error("Unterminated quoted string [%s]", buf); 706 free(buf); 707 return; 708 } 709 free(buf); 710 MainParseArgs((int)words.len, words.words); 711 712 Words_Free(words); 713 } 714 715 bool 716 Main_SetObjdir(bool writable, const char *fmt, ...) 717 { 718 struct stat sb; 719 char *path; 720 char buf[MAXPATHLEN + 1]; 721 char buf2[MAXPATHLEN + 1]; 722 va_list ap; 723 724 va_start(ap, fmt); 725 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 726 va_end(ap); 727 728 if (path[0] != '/') { 729 if (snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path) <= MAXPATHLEN) 730 path = buf2; 731 else 732 return false; 733 } 734 735 /* look for the directory and try to chdir there */ 736 if (stat(path, &sb) != 0 || !S_ISDIR(sb.st_mode)) 737 return false; 738 739 if ((writable && access(path, W_OK) != 0) || chdir(path) != 0) { 740 (void)fprintf(stderr, "%s: warning: %s: %s.\n", 741 progname, path, strerror(errno)); 742 /* Allow debugging how we got here - not always obvious */ 743 if (GetBooleanExpr("${MAKE_DEBUG_OBJDIR_CHECK_WRITABLE}", 744 false)) 745 PrintOnError(NULL, ""); 746 return false; 747 } 748 749 snprintf(objdir, sizeof objdir, "%s", path); 750 Global_Set(".OBJDIR", objdir); 751 setenv("PWD", objdir, 1); 752 Dir_InitDot(); 753 purge_relative_cached_realpaths(); 754 if (opts.enterFlag && strcmp(objdir, curdir) != 0) 755 enterFlagObj = true; 756 return true; 757 } 758 759 static bool 760 SetVarObjdir(bool writable, const char *var, const char *suffix) 761 { 762 FStr path = Var_Value(SCOPE_CMDLINE, var); 763 764 if (path.str == NULL || path.str[0] == '\0') { 765 FStr_Done(&path); 766 return false; 767 } 768 769 Var_Expand(&path, SCOPE_GLOBAL, VARE_WANTRES); 770 771 (void)Main_SetObjdir(writable, "%s%s", path.str, suffix); 772 773 FStr_Done(&path); 774 return true; 775 } 776 777 /* 778 * Splits str into words (in-place, modifying it), adding them to the list. 779 * The string must be kept alive as long as the list. 780 */ 781 void 782 AppendWords(StringList *lp, char *str) 783 { 784 char *p; 785 const char *sep = " \t"; 786 787 for (p = strtok(str, sep); p != NULL; p = strtok(NULL, sep)) 788 Lst_Append(lp, p); 789 } 790 791 #ifdef SIGINFO 792 /*ARGSUSED*/ 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("${.MAKE.MODE:tl}", 812 SCOPE_GLOBAL, VARE_WANTRES); 813 /* TODO: handle errors */ 814 815 if (mode[0] != '\0') { 816 if (strstr(mode, "compat") != NULL) { 817 opts.compatMake = true; 818 forceJobs = false; 819 } 820 #if USE_META 821 if (strstr(mode, "meta") != NULL) 822 meta_mode_init(mode); 823 #endif 824 if (strstr(mode, "randomize-targets") != NULL) 825 opts.randomizeTargets = true; 826 } 827 828 free(mode); 829 } 830 831 static void 832 PrintVar(const char *varname, bool expandVars) 833 { 834 if (strchr(varname, '$') != NULL) { 835 char *evalue = Var_Subst(varname, SCOPE_GLOBAL, VARE_WANTRES); 836 /* TODO: handle errors */ 837 printf("%s\n", evalue); 838 free(evalue); 839 840 } else if (expandVars) { 841 char *expr = str_concat3("${", varname, "}"); 842 char *evalue = Var_Subst(expr, SCOPE_GLOBAL, VARE_WANTRES); 843 /* TODO: handle errors */ 844 free(expr); 845 printf("%s\n", evalue); 846 free(evalue); 847 848 } else { 849 FStr value = Var_Value(SCOPE_GLOBAL, varname); 850 printf("%s\n", value.str != NULL ? value.str : ""); 851 FStr_Done(&value); 852 } 853 } 854 855 /* 856 * Return a bool based on a variable. 857 * 858 * If the knob is not set, return the fallback. 859 * If set, anything that looks or smells like "No", "False", "Off", "0", etc. 860 * is false, otherwise true. 861 */ 862 bool 863 GetBooleanExpr(const char *expr, bool fallback) 864 { 865 char *value; 866 bool res; 867 868 value = Var_Subst(expr, SCOPE_GLOBAL, VARE_WANTRES); 869 /* TODO: handle errors */ 870 res = ParseBoolean(value, fallback); 871 free(value); 872 return res; 873 } 874 875 static void 876 doPrintVars(void) 877 { 878 StringListNode *ln; 879 bool expandVars; 880 881 if (opts.printVars == PVM_EXPANDED) 882 expandVars = true; 883 else if (opts.debugVflag) 884 expandVars = false; 885 else 886 expandVars = GetBooleanExpr("${.MAKE.EXPAND_VARIABLES}", 887 false); 888 889 for (ln = opts.variables.first; ln != NULL; ln = ln->next) { 890 const char *varname = ln->datum; 891 PrintVar(varname, expandVars); 892 } 893 } 894 895 static bool 896 runTargets(void) 897 { 898 GNodeList targs = LST_INIT; /* target nodes to create */ 899 bool outOfDate; /* false if all targets up to date */ 900 901 /* 902 * Have now read the entire graph and need to make a list of 903 * targets to create. If none was given on the command line, 904 * we consult the parsing module to find the main target(s) 905 * to create. 906 */ 907 if (Lst_IsEmpty(&opts.create)) 908 Parse_MainName(&targs); 909 else 910 Targ_FindList(&targs, &opts.create); 911 912 if (!opts.compatMake) { 913 /* 914 * Initialize job module before traversing the graph 915 * now that any .BEGIN and .END targets have been read. 916 * This is done only if the -q flag wasn't given 917 * (to prevent the .BEGIN from being executed should 918 * it exist). 919 */ 920 if (!opts.query) { 921 Job_Init(); 922 jobsRunning = true; 923 } 924 925 /* Traverse the graph, checking on all the targets */ 926 outOfDate = Make_Run(&targs); 927 } else { 928 Compat_MakeAll(&targs); 929 outOfDate = false; 930 } 931 Lst_Done(&targs); /* Don't free the targets themselves. */ 932 return outOfDate; 933 } 934 935 /* 936 * Set up the .TARGETS variable to contain the list of targets to be created. 937 * If none specified, make the variable empty for now, the parser will fill 938 * in the default or .MAIN target later. 939 */ 940 static void 941 InitVarTargets(void) 942 { 943 StringListNode *ln; 944 945 if (Lst_IsEmpty(&opts.create)) { 946 Global_Set(".TARGETS", ""); 947 return; 948 } 949 950 for (ln = opts.create.first; ln != NULL; ln = ln->next) { 951 const char *name = ln->datum; 952 Global_Append(".TARGETS", name); 953 } 954 } 955 956 static void 957 InitRandom(void) 958 { 959 struct timeval tv; 960 961 gettimeofday(&tv, NULL); 962 srandom((unsigned int)(tv.tv_sec + tv.tv_usec)); 963 } 964 965 static const char * 966 InitVarMachine(const struct utsname *utsname MAKE_ATTR_UNUSED) 967 { 968 const char *machine = getenv("MACHINE"); 969 if (machine != NULL) 970 return machine; 971 972 #if defined(MAKE_NATIVE) 973 return utsname->machine; 974 #elif defined(MAKE_MACHINE) 975 return MAKE_MACHINE; 976 #else 977 return "unknown"; 978 #endif 979 } 980 981 static const char * 982 InitVarMachineArch(void) 983 { 984 const char *env = getenv("MACHINE_ARCH"); 985 if (env != NULL) 986 return env; 987 988 #ifdef MAKE_NATIVE 989 { 990 struct utsname utsname; 991 static char machine_arch_buf[sizeof utsname.machine]; 992 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 993 size_t len = sizeof machine_arch_buf; 994 995 if (sysctl(mib, (unsigned int)__arraycount(mib), 996 machine_arch_buf, &len, NULL, 0) < 0) { 997 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", 998 progname, strerror(errno)); 999 exit(2); 1000 } 1001 1002 return machine_arch_buf; 1003 } 1004 #elif defined(MACHINE_ARCH) 1005 return MACHINE_ARCH; 1006 #elif defined(MAKE_MACHINE_ARCH) 1007 return MAKE_MACHINE_ARCH; 1008 #else 1009 return "unknown"; 1010 #endif 1011 } 1012 1013 #ifndef NO_PWD_OVERRIDE 1014 /* 1015 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1016 * since the value of curdir can vary depending on how we got 1017 * here. That is, sitting at a shell prompt (shell that provides $PWD) 1018 * or via subdir.mk, in which case it's likely a shell which does 1019 * not provide it. 1020 * 1021 * So, to stop it breaking this case only, we ignore PWD if 1022 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains an expression. 1023 */ 1024 static void 1025 HandlePWD(const struct stat *curdir_st) 1026 { 1027 char *pwd; 1028 FStr makeobjdir; 1029 struct stat pwd_st; 1030 1031 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1032 return; 1033 1034 if (Var_Exists(SCOPE_CMDLINE, "MAKEOBJDIRPREFIX")) 1035 return; 1036 1037 makeobjdir = Var_Value(SCOPE_CMDLINE, "MAKEOBJDIR"); 1038 if (makeobjdir.str != NULL && strchr(makeobjdir.str, '$') != NULL) 1039 goto ignore_pwd; 1040 1041 if (stat(pwd, &pwd_st) == 0 && 1042 curdir_st->st_ino == pwd_st.st_ino && 1043 curdir_st->st_dev == pwd_st.st_dev) 1044 (void)strncpy(curdir, pwd, MAXPATHLEN); 1045 1046 ignore_pwd: 1047 FStr_Done(&makeobjdir); 1048 } 1049 #endif 1050 1051 /* 1052 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, MAKEOBJDIR is set 1053 * in the environment, try only that value and fall back to .CURDIR if it 1054 * does not exist. 1055 * 1056 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1057 * and finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none of these 1058 * paths exist, just use .CURDIR. 1059 */ 1060 static void 1061 InitObjdir(const char *machine, const char *machine_arch) 1062 { 1063 bool writable; 1064 1065 Dir_InitCur(curdir); 1066 writable = GetBooleanExpr("${MAKE_OBJDIR_CHECK_WRITABLE}", true); 1067 (void)Main_SetObjdir(false, "%s", curdir); 1068 1069 if (!SetVarObjdir(writable, "MAKEOBJDIRPREFIX", curdir) && 1070 !SetVarObjdir(writable, "MAKEOBJDIR", "") && 1071 !Main_SetObjdir(writable, "%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1072 !Main_SetObjdir(writable, "%s.%s", _PATH_OBJDIR, machine) && 1073 !Main_SetObjdir(writable, "%s", _PATH_OBJDIR)) 1074 (void)Main_SetObjdir(writable, "%s%s", _PATH_OBJDIRPREFIX, curdir); 1075 } 1076 1077 /* get rid of resource limit on file descriptors */ 1078 static void 1079 UnlimitFiles(void) 1080 { 1081 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1082 struct rlimit rl; 1083 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1084 rl.rlim_cur != rl.rlim_max) { 1085 rl.rlim_cur = rl.rlim_max; 1086 (void)setrlimit(RLIMIT_NOFILE, &rl); 1087 } 1088 #endif 1089 } 1090 1091 static void 1092 CmdOpts_Init(void) 1093 { 1094 opts.compatMake = false; 1095 memset(&opts.debug, 0, sizeof(opts.debug)); 1096 /* opts.debug_file has already been initialized earlier */ 1097 opts.strict = false; 1098 opts.debugVflag = false; 1099 opts.checkEnvFirst = false; 1100 Lst_Init(&opts.makefiles); 1101 opts.ignoreErrors = false; /* Pay attention to non-zero returns */ 1102 opts.maxJobs = 1; 1103 opts.keepgoing = false; /* Stop on error */ 1104 opts.noRecursiveExecute = false; /* Execute all .MAKE targets */ 1105 opts.noExecute = false; /* Execute all commands */ 1106 opts.query = false; 1107 opts.noBuiltins = false; /* Read the built-in rules */ 1108 opts.silent = false; /* Print commands as executed */ 1109 opts.touch = false; 1110 opts.printVars = PVM_NONE; 1111 Lst_Init(&opts.variables); 1112 opts.parseWarnFatal = false; 1113 opts.enterFlag = false; 1114 opts.varNoExportEnv = false; 1115 Lst_Init(&opts.create); 1116 } 1117 1118 /* 1119 * Initialize MAKE and .MAKE to the path of the executable, so that it can be 1120 * found by execvp(3) and the shells, even after a chdir. 1121 * 1122 * If it's a relative path and contains a '/', resolve it to an absolute path. 1123 * Otherwise keep it as is, assuming it will be found in the PATH. 1124 */ 1125 static void 1126 InitVarMake(const char *argv0) 1127 { 1128 const char *make = argv0; 1129 1130 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) { 1131 char pathbuf[MAXPATHLEN]; 1132 const char *abspath = cached_realpath(argv0, pathbuf); 1133 struct stat st; 1134 if (abspath != NULL && abspath[0] == '/' && 1135 stat(make, &st) == 0) 1136 make = abspath; 1137 } 1138 1139 Global_Set("MAKE", make); 1140 Global_Set(".MAKE", make); 1141 } 1142 1143 /* 1144 * Add the directories from the colon-separated syspath to defSysIncPath. 1145 * After returning, the contents of syspath is unspecified. 1146 */ 1147 static void 1148 InitDefSysIncPath(char *syspath) 1149 { 1150 static char defsyspath[] = _PATH_DEFSYSPATH; 1151 char *start, *p; 1152 1153 /* 1154 * If no user-supplied system path was given (through the -m option) 1155 * add the directories from the DEFSYSPATH (more than one may be given 1156 * as dir1:...:dirn) to the system include path. 1157 */ 1158 if (syspath == NULL || syspath[0] == '\0') 1159 syspath = defsyspath; 1160 else 1161 syspath = bmake_strdup(syspath); 1162 1163 for (start = syspath; *start != '\0'; start = p) { 1164 for (p = start; *p != '\0' && *p != ':'; p++) 1165 continue; 1166 if (*p == ':') 1167 *p++ = '\0'; 1168 1169 /* look for magic parent directory search string */ 1170 if (strncmp(start, ".../", 4) == 0) { 1171 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1172 if (dir != NULL) { 1173 (void)SearchPath_Add(defSysIncPath, dir); 1174 free(dir); 1175 } 1176 } else { 1177 (void)SearchPath_Add(defSysIncPath, start); 1178 } 1179 } 1180 1181 if (syspath != defsyspath) 1182 free(syspath); 1183 } 1184 1185 static void 1186 ReadBuiltinRules(void) 1187 { 1188 StringListNode *ln; 1189 StringList sysMkFiles = LST_INIT; 1190 1191 SearchPath_Expand( 1192 Lst_IsEmpty(&sysIncPath->dirs) ? defSysIncPath : sysIncPath, 1193 _PATH_DEFSYSMK, 1194 &sysMkFiles); 1195 if (Lst_IsEmpty(&sysMkFiles)) 1196 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK); 1197 1198 for (ln = sysMkFiles.first; ln != NULL; ln = ln->next) 1199 if (ReadMakefile(ln->datum)) 1200 break; 1201 1202 if (ln == NULL) 1203 Fatal("%s: cannot open %s.", 1204 progname, (const char *)sysMkFiles.first->datum); 1205 1206 Lst_DoneFree(&sysMkFiles); 1207 } 1208 1209 static void 1210 InitMaxJobs(void) 1211 { 1212 char *value; 1213 int n; 1214 1215 if (forceJobs || opts.compatMake || 1216 !Var_Exists(SCOPE_GLOBAL, ".MAKE.JOBS")) 1217 return; 1218 1219 value = Var_Subst("${.MAKE.JOBS}", SCOPE_GLOBAL, VARE_WANTRES); 1220 /* TODO: handle errors */ 1221 n = (int)strtol(value, NULL, 0); 1222 if (n < 1) { 1223 (void)fprintf(stderr, 1224 "%s: illegal value for .MAKE.JOBS " 1225 "-- must be positive integer!\n", 1226 progname); 1227 exit(2); /* Not 1 so -q can distinguish error */ 1228 } 1229 1230 if (n != opts.maxJobs) { 1231 Global_Append(MAKEFLAGS, "-j"); 1232 Global_Append(MAKEFLAGS, value); 1233 } 1234 1235 opts.maxJobs = n; 1236 maxJobTokens = opts.maxJobs; 1237 forceJobs = true; 1238 free(value); 1239 } 1240 1241 /* 1242 * For compatibility, look at the directories in the VPATH variable 1243 * and add them to the search path, if the variable is defined. The 1244 * variable's value is in the same format as the PATH environment 1245 * variable, i.e. <directory>:<directory>:<directory>... 1246 */ 1247 static void 1248 InitVpath(void) 1249 { 1250 char *vpath, savec, *path; 1251 if (!Var_Exists(SCOPE_CMDLINE, "VPATH")) 1252 return; 1253 1254 vpath = Var_Subst("${VPATH}", SCOPE_CMDLINE, VARE_WANTRES); 1255 /* TODO: handle errors */ 1256 path = vpath; 1257 do { 1258 char *p; 1259 /* skip to end of directory */ 1260 for (p = path; *p != ':' && *p != '\0'; p++) 1261 continue; 1262 /* Save terminator character so know when to stop */ 1263 savec = *p; 1264 *p = '\0'; 1265 /* Add directory to search path */ 1266 (void)SearchPath_Add(&dirSearchPath, path); 1267 *p = savec; 1268 path = p + 1; 1269 } while (savec == ':'); 1270 free(vpath); 1271 } 1272 1273 static void 1274 ReadAllMakefiles(const StringList *makefiles) 1275 { 1276 StringListNode *ln; 1277 1278 for (ln = makefiles->first; ln != NULL; ln = ln->next) { 1279 const char *fname = ln->datum; 1280 if (!ReadMakefile(fname)) 1281 Fatal("%s: cannot open %s.", progname, fname); 1282 } 1283 } 1284 1285 static void 1286 ReadFirstDefaultMakefile(void) 1287 { 1288 StringList makefiles = LST_INIT; 1289 StringListNode *ln; 1290 char *prefs = Var_Subst("${.MAKE.MAKEFILE_PREFERENCE}", 1291 SCOPE_CMDLINE, VARE_WANTRES); 1292 /* TODO: handle errors */ 1293 1294 AppendWords(&makefiles, prefs); 1295 1296 for (ln = makefiles.first; ln != NULL; ln = ln->next) 1297 if (ReadMakefile(ln->datum)) 1298 break; 1299 1300 Lst_Done(&makefiles); 1301 free(prefs); 1302 } 1303 1304 /* 1305 * Initialize variables such as MAKE, MACHINE, .MAKEFLAGS. 1306 * Initialize a few modules. 1307 * Parse the arguments from MAKEFLAGS and the command line. 1308 */ 1309 static void 1310 main_Init(int argc, char **argv) 1311 { 1312 struct stat sa; 1313 const char *machine; 1314 const char *machine_arch; 1315 char *syspath = getenv("MAKESYSPATH"); 1316 struct utsname utsname; 1317 1318 /* default to writing debug to stderr */ 1319 opts.debug_file = stderr; 1320 1321 Str_Intern_Init(); 1322 HashTable_Init(&cached_realpaths); 1323 1324 #ifdef SIGINFO 1325 (void)bmake_signal(SIGINFO, siginfo); 1326 #endif 1327 1328 InitRandom(); 1329 1330 progname = str_basename(argv[0]); 1331 1332 UnlimitFiles(); 1333 1334 if (uname(&utsname) == -1) { 1335 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1336 strerror(errno)); 1337 exit(2); 1338 } 1339 1340 machine = InitVarMachine(&utsname); 1341 machine_arch = InitVarMachineArch(); 1342 1343 myPid = getpid(); /* remember this for vFork() */ 1344 1345 /* Just in case MAKEOBJDIR wants us to do something tricky. */ 1346 Targ_Init(); 1347 Var_Init(); 1348 Global_Set_ReadOnly(".MAKE.OS", utsname.sysname); 1349 Global_Set("MACHINE", machine); 1350 Global_Set("MACHINE_ARCH", machine_arch); 1351 #ifdef MAKE_VERSION 1352 Global_Set("MAKE_VERSION", MAKE_VERSION); 1353 #endif 1354 Global_Set_ReadOnly(".newline", "\n"); 1355 #ifndef MAKEFILE_PREFERENCE_LIST 1356 /* This is the traditional preference for makefiles. */ 1357 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1358 #endif 1359 Global_Set(".MAKE.MAKEFILE_PREFERENCE", MAKEFILE_PREFERENCE_LIST); 1360 Global_Set(".MAKE.DEPENDFILE", ".depend"); 1361 /* Tell makefiles like jobs.mk whether we support -jC */ 1362 #ifdef _SC_NPROCESSORS_ONLN 1363 Global_Set_ReadOnly(".MAKE.JOBS.C", "yes"); 1364 #else 1365 Global_Set_ReadOnly(".MAKE.JOBS.C", "no"); 1366 #endif 1367 1368 CmdOpts_Init(); 1369 allPrecious = false; /* Remove targets when interrupted */ 1370 deleteOnError = false; /* Historical default behavior */ 1371 jobsRunning = false; 1372 1373 maxJobTokens = opts.maxJobs; 1374 ignorePWD = false; 1375 1376 /* 1377 * Initialize the parsing, directory and variable modules to prepare 1378 * for the reading of inclusion paths and variable settings on the 1379 * command line 1380 */ 1381 1382 /* 1383 * Initialize various variables. 1384 * MAKE also gets this name, for compatibility 1385 * .MAKEFLAGS gets set to the empty string just in case. 1386 * MFLAGS also gets initialized empty, for compatibility. 1387 */ 1388 Parse_Init(); 1389 InitVarMake(argv[0]); 1390 Global_Set(MAKEFLAGS, ""); 1391 Global_Set(".MAKEOVERRIDES", ""); 1392 Global_Set("MFLAGS", ""); 1393 Global_Set(".ALLTARGETS", ""); 1394 Global_Set_ReadOnly(".MAKE.LEVEL.ENV", MAKE_LEVEL_ENV); 1395 1396 /* Set some other useful variables. */ 1397 { 1398 char buf[64], *ep = getenv(MAKE_LEVEL_ENV); 1399 1400 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0; 1401 if (makelevel < 0) 1402 makelevel = 0; 1403 snprintf(buf, sizeof buf, "%d", makelevel); 1404 Global_Set(".MAKE.LEVEL", buf); 1405 snprintf(buf, sizeof buf, "%u", myPid); 1406 Global_Set_ReadOnly(".MAKE.PID", buf); 1407 snprintf(buf, sizeof buf, "%u", getppid()); 1408 Global_Set_ReadOnly(".MAKE.PPID", buf); 1409 snprintf(buf, sizeof buf, "%u", getuid()); 1410 Global_Set_ReadOnly(".MAKE.UID", buf); 1411 snprintf(buf, sizeof buf, "%u", getgid()); 1412 Global_Set_ReadOnly(".MAKE.GID", buf); 1413 } 1414 if (makelevel > 0) { 1415 char pn[1024]; 1416 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel); 1417 progname = bmake_strdup(pn); 1418 } 1419 1420 #ifdef USE_META 1421 meta_init(); 1422 #endif 1423 Dir_Init(); 1424 1425 { 1426 char *makeflags = explode(getenv("MAKEFLAGS")); 1427 Main_ParseArgLine(makeflags); 1428 free(makeflags); 1429 } 1430 1431 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1432 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1433 progname, strerror(errno)); 1434 exit(2); 1435 } 1436 1437 MainParseArgs(argc, argv); 1438 1439 if (opts.enterFlag) 1440 printf("%s: Entering directory `%s'\n", progname, curdir); 1441 1442 if (stat(curdir, &sa) == -1) { 1443 (void)fprintf(stderr, "%s: %s: %s.\n", 1444 progname, curdir, strerror(errno)); 1445 exit(2); 1446 } 1447 1448 #ifndef NO_PWD_OVERRIDE 1449 HandlePWD(&sa); 1450 #endif 1451 Global_Set(".CURDIR", curdir); 1452 1453 InitObjdir(machine, machine_arch); 1454 1455 Arch_Init(); 1456 Suff_Init(); 1457 Trace_Init(tracefile); 1458 1459 defaultNode = NULL; 1460 (void)time(&now); 1461 1462 Trace_Log(MAKESTART, NULL); 1463 1464 InitVarTargets(); 1465 1466 InitDefSysIncPath(syspath); 1467 } 1468 1469 /* 1470 * Read the system makefile followed by either makefile, Makefile or the 1471 * files given by the -f option. Exit on parse errors. 1472 */ 1473 static void 1474 main_ReadFiles(void) 1475 { 1476 1477 if (Lst_IsEmpty(&sysIncPath->dirs)) 1478 SearchPath_AddAll(sysIncPath, defSysIncPath); 1479 1480 Dir_SetSYSPATH(); 1481 if (!opts.noBuiltins) 1482 ReadBuiltinRules(); 1483 1484 posix_state = PS_MAYBE_NEXT_LINE; 1485 if (!Lst_IsEmpty(&opts.makefiles)) 1486 ReadAllMakefiles(&opts.makefiles); 1487 else 1488 ReadFirstDefaultMakefile(); 1489 } 1490 1491 /* Compute the dependency graph. */ 1492 static void 1493 main_PrepareMaking(void) 1494 { 1495 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1496 if (!opts.noBuiltins || opts.printVars == PVM_NONE) { 1497 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE}", 1498 SCOPE_CMDLINE, VARE_WANTRES); 1499 if (makeDependfile[0] != '\0') { 1500 /* TODO: handle errors */ 1501 doing_depend = true; 1502 (void)ReadMakefile(makeDependfile); 1503 doing_depend = false; 1504 } 1505 } 1506 1507 if (enterFlagObj) 1508 printf("%s: Entering directory `%s'\n", progname, objdir); 1509 1510 MakeMode(); 1511 1512 { 1513 FStr makeflags = Var_Value(SCOPE_GLOBAL, MAKEFLAGS); 1514 Global_Append("MFLAGS", makeflags.str); 1515 FStr_Done(&makeflags); 1516 } 1517 1518 InitMaxJobs(); 1519 1520 if (!opts.compatMake && !forceJobs) 1521 opts.compatMake = true; 1522 1523 if (!opts.compatMake) 1524 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1525 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1526 jp_0, jp_1, opts.maxJobs, maxJobTokens, opts.compatMake ? 1 : 0); 1527 1528 if (opts.printVars == PVM_NONE) 1529 Main_ExportMAKEFLAGS(true); /* initial export */ 1530 1531 InitVpath(); 1532 1533 /* 1534 * Now that all search paths have been read for suffixes et al, it's 1535 * time to add the default search path to their lists... 1536 */ 1537 Suff_ExtendPaths(); 1538 1539 /* 1540 * Propagate attributes through :: dependency lists. 1541 */ 1542 Targ_Propagate(); 1543 1544 /* print the initial graph, if the user requested it */ 1545 if (DEBUG(GRAPH1)) 1546 Targ_PrintGraph(1); 1547 } 1548 1549 /* 1550 * Make the targets. 1551 * If the -v or -V options are given, print variables instead. 1552 * Return whether any of the targets is out-of-date. 1553 */ 1554 static bool 1555 main_Run(void) 1556 { 1557 if (opts.printVars != PVM_NONE) { 1558 /* print the values of any variables requested by the user */ 1559 doPrintVars(); 1560 return false; 1561 } else { 1562 return runTargets(); 1563 } 1564 } 1565 1566 /* Clean up after making the targets. */ 1567 static void 1568 main_CleanUp(void) 1569 { 1570 #ifdef CLEANUP 1571 Lst_DoneFree(&opts.variables); 1572 Lst_DoneFree(&opts.makefiles); 1573 Lst_DoneFree(&opts.create); 1574 #endif 1575 1576 if (DEBUG(GRAPH2)) 1577 Targ_PrintGraph(2); 1578 1579 Trace_Log(MAKEEND, NULL); 1580 1581 if (enterFlagObj) 1582 printf("%s: Leaving directory `%s'\n", progname, objdir); 1583 if (opts.enterFlag) 1584 printf("%s: Leaving directory `%s'\n", progname, curdir); 1585 1586 #ifdef USE_META 1587 meta_finish(); 1588 #endif 1589 Suff_End(); 1590 Var_End(); 1591 Targ_End(); 1592 Arch_End(); 1593 Parse_End(); 1594 Dir_End(); 1595 Job_End(); 1596 Trace_End(); 1597 Str_Intern_End(); 1598 } 1599 1600 /* Determine the exit code. */ 1601 static int 1602 main_Exit(bool outOfDate) 1603 { 1604 if (opts.strict && (main_errors > 0 || Parse_NumErrors() > 0)) 1605 return 2; /* Not 1 so -q can distinguish error */ 1606 return outOfDate ? 1 : 0; 1607 } 1608 1609 int 1610 main(int argc, char **argv) 1611 { 1612 bool outOfDate; 1613 1614 main_Init(argc, argv); 1615 main_ReadFiles(); 1616 main_PrepareMaking(); 1617 outOfDate = main_Run(); 1618 main_CleanUp(); 1619 return main_Exit(outOfDate); 1620 } 1621 1622 /* 1623 * Open and parse the given makefile, with all its side effects. 1624 * Return false if the file could not be opened. 1625 */ 1626 static bool 1627 ReadMakefile(const char *fname) 1628 { 1629 int fd; 1630 char *name, *path = NULL; 1631 1632 if (strcmp(fname, "-") == 0) { 1633 Parse_File("(stdin)", -1); 1634 Var_Set(SCOPE_INTERNAL, "MAKEFILE", ""); 1635 } else { 1636 /* if we've chdir'd, rebuild the path name */ 1637 if (strcmp(curdir, objdir) != 0 && *fname != '/') { 1638 path = str_concat3(curdir, "/", fname); 1639 fd = open(path, O_RDONLY); 1640 if (fd != -1) { 1641 fname = path; 1642 goto found; 1643 } 1644 free(path); 1645 1646 /* If curdir failed, try objdir (ala .depend) */ 1647 path = str_concat3(objdir, "/", fname); 1648 fd = open(path, O_RDONLY); 1649 if (fd != -1) { 1650 fname = path; 1651 goto found; 1652 } 1653 } else { 1654 fd = open(fname, O_RDONLY); 1655 if (fd != -1) 1656 goto found; 1657 } 1658 /* look in -I and system include directories. */ 1659 name = Dir_FindFile(fname, parseIncPath); 1660 if (name == NULL) { 1661 SearchPath *sysInc = Lst_IsEmpty(&sysIncPath->dirs) 1662 ? defSysIncPath : sysIncPath; 1663 name = Dir_FindFile(fname, sysInc); 1664 } 1665 if (name == NULL || (fd = open(name, O_RDONLY)) == -1) { 1666 free(name); 1667 free(path); 1668 return false; 1669 } 1670 fname = name; 1671 /* 1672 * set the MAKEFILE variable desired by System V fans -- the 1673 * placement of the setting here means it gets set to the last 1674 * makefile specified, as it is set by SysV make. 1675 */ 1676 found: 1677 if (!doing_depend) 1678 Var_Set(SCOPE_INTERNAL, "MAKEFILE", fname); 1679 Parse_File(fname, fd); 1680 } 1681 free(path); 1682 return true; 1683 } 1684 1685 /* 1686 * Execute the command in cmd, and return its output (only stdout, not 1687 * stderr, possibly empty). In the output, replace newlines with spaces. 1688 */ 1689 char * 1690 Cmd_Exec(const char *cmd, char **error) 1691 { 1692 const char *args[4]; /* Arguments for invoking the shell */ 1693 int pipefds[2]; 1694 int cpid; /* Child PID */ 1695 int pid; /* PID from wait() */ 1696 int status; /* command exit status */ 1697 Buffer buf; /* buffer to store the result */ 1698 ssize_t bytes_read; 1699 char *output; 1700 char *p; 1701 int saved_errno; 1702 char cmd_file[MAXPATHLEN]; 1703 size_t cmd_len; 1704 int cmd_fd = -1; 1705 1706 if (shellPath == NULL) 1707 Shell_Init(); 1708 1709 cmd_len = strlen(cmd); 1710 if (cmd_len > 1000) { 1711 cmd_fd = mkTempFile(NULL, cmd_file, sizeof(cmd_file)); 1712 if (cmd_fd >= 0) { 1713 ssize_t n; 1714 1715 n = write(cmd_fd, cmd, cmd_len); 1716 close(cmd_fd); 1717 if (n < (ssize_t)cmd_len) { 1718 unlink(cmd_file); 1719 cmd_fd = -1; 1720 } 1721 } 1722 } 1723 1724 args[0] = shellName; 1725 if (cmd_fd >= 0) { 1726 args[1] = cmd_file; 1727 args[2] = NULL; 1728 } else { 1729 cmd_file[0] = '\0'; 1730 args[1] = "-c"; 1731 args[2] = cmd; 1732 args[3] = NULL; 1733 } 1734 DEBUG1(VAR, "Capturing the output of command \"%s\"\n", cmd); 1735 1736 if (pipe(pipefds) == -1) { 1737 *error = str_concat3( 1738 "Couldn't create pipe for \"", cmd, "\""); 1739 return bmake_strdup(""); 1740 } 1741 1742 Var_ReexportVars(SCOPE_GLOBAL); 1743 1744 switch (cpid = vfork()) { 1745 case 0: 1746 (void)close(pipefds[0]); 1747 (void)dup2(pipefds[1], STDOUT_FILENO); 1748 (void)close(pipefds[1]); 1749 1750 (void)execv(shellPath, UNCONST(args)); 1751 _exit(1); 1752 /* NOTREACHED */ 1753 1754 case -1: 1755 *error = str_concat3("Couldn't exec \"", cmd, "\""); 1756 return bmake_strdup(""); 1757 } 1758 1759 (void)close(pipefds[1]); /* No need for the writing half */ 1760 1761 saved_errno = 0; 1762 Buf_Init(&buf); 1763 1764 do { 1765 char result[BUFSIZ]; 1766 bytes_read = read(pipefds[0], result, sizeof result); 1767 if (bytes_read > 0) 1768 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1769 } while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1770 if (bytes_read == -1) 1771 saved_errno = errno; 1772 1773 (void)close(pipefds[0]); /* Close the input side of the pipe. */ 1774 1775 while ((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0) 1776 JobReapChild(pid, status, false); 1777 1778 if (Buf_EndsWith(&buf, '\n')) 1779 buf.data[buf.len - 1] = '\0'; 1780 1781 output = Buf_DoneData(&buf); 1782 for (p = output; *p != '\0'; p++) 1783 if (*p == '\n') 1784 *p = ' '; 1785 1786 if (WIFSIGNALED(status)) 1787 *error = str_concat3("\"", cmd, "\" exited on a signal"); 1788 else if (WEXITSTATUS(status) != 0) 1789 *error = str_concat3( 1790 "\"", cmd, "\" returned non-zero status"); 1791 else if (saved_errno != 0) 1792 *error = str_concat3( 1793 "Couldn't read shell's output for \"", cmd, "\""); 1794 else 1795 *error = NULL; 1796 if (cmd_file[0] != '\0') 1797 unlink(cmd_file); 1798 return output; 1799 } 1800 1801 /* 1802 * Print a printf-style error message. 1803 * 1804 * In default mode, this error message has no consequences, for compatibility 1805 * reasons, in particular it does not affect the exit status. Only in lint 1806 * mode (-dL) it does. 1807 */ 1808 void 1809 Error(const char *fmt, ...) 1810 { 1811 va_list ap; 1812 FILE *f; 1813 1814 f = opts.debug_file; 1815 if (f == stdout) 1816 f = stderr; 1817 (void)fflush(stdout); 1818 1819 for (;;) { 1820 fprintf(f, "%s: ", progname); 1821 va_start(ap, fmt); 1822 (void)vfprintf(f, fmt, ap); 1823 va_end(ap); 1824 (void)fprintf(f, "\n"); 1825 (void)fflush(f); 1826 if (f == stderr) 1827 break; 1828 f = stderr; 1829 } 1830 main_errors++; 1831 } 1832 1833 /* 1834 * Wait for any running jobs to finish, then produce an error message, 1835 * finally exit immediately. 1836 * 1837 * Exiting immediately differs from Parse_Error, which exits only after the 1838 * current top-level makefile has been parsed completely. 1839 */ 1840 void 1841 Fatal(const char *fmt, ...) 1842 { 1843 va_list ap; 1844 1845 if (jobsRunning) 1846 Job_Wait(); 1847 1848 (void)fflush(stdout); 1849 fprintf(stderr, "%s: ", progname); 1850 va_start(ap, fmt); 1851 (void)vfprintf(stderr, fmt, ap); 1852 va_end(ap); 1853 (void)fprintf(stderr, "\n"); 1854 (void)fflush(stderr); 1855 PrintStackTrace(true); 1856 1857 PrintOnError(NULL, "\n"); 1858 1859 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1860 Targ_PrintGraph(2); 1861 Trace_Log(MAKEERROR, NULL); 1862 exit(2); /* Not 1 so -q can distinguish error */ 1863 } 1864 1865 /* 1866 * Major exception once jobs are being created. 1867 * Kills all jobs, prints a message and exits. 1868 */ 1869 void 1870 Punt(const char *fmt, ...) 1871 { 1872 va_list ap; 1873 1874 (void)fflush(stdout); 1875 (void)fprintf(stderr, "%s: ", progname); 1876 va_start(ap, fmt); 1877 (void)vfprintf(stderr, fmt, ap); 1878 va_end(ap); 1879 (void)fprintf(stderr, "\n"); 1880 (void)fflush(stderr); 1881 1882 PrintOnError(NULL, "\n"); 1883 1884 DieHorribly(); 1885 } 1886 1887 /* Exit without giving a message. */ 1888 void 1889 DieHorribly(void) 1890 { 1891 if (jobsRunning) 1892 Job_AbortAll(); 1893 if (DEBUG(GRAPH2)) 1894 Targ_PrintGraph(2); 1895 Trace_Log(MAKEERROR, NULL); 1896 exit(2); /* Not 1 so -q can distinguish error */ 1897 } 1898 1899 /* 1900 * Called when aborting due to errors in child shell to signal abnormal exit. 1901 * The program exits. 1902 * Errors is the number of errors encountered in Make_Make. 1903 */ 1904 void 1905 Finish(int errs) 1906 { 1907 if (shouldDieQuietly(NULL, -1)) 1908 exit(2); 1909 Fatal("%d error%s", errs, errs == 1 ? "" : "s"); 1910 } 1911 1912 int 1913 unlink_file(const char *file) 1914 { 1915 struct stat st; 1916 1917 if (lstat(file, &st) == -1) 1918 return -1; 1919 1920 if (S_ISDIR(st.st_mode)) { 1921 /* 1922 * POSIX says for unlink: "The path argument shall not name 1923 * a directory unless [...]". 1924 */ 1925 errno = EISDIR; 1926 return -1; 1927 } 1928 return unlink(file); 1929 } 1930 1931 static void 1932 write_all(int fd, const void *data, size_t n) 1933 { 1934 const char *mem = data; 1935 1936 while (n > 0) { 1937 ssize_t written = write(fd, mem, n); 1938 /* XXX: Should this EAGAIN be EINTR? */ 1939 if (written == -1 && errno == EAGAIN) 1940 continue; 1941 if (written == -1) 1942 break; 1943 mem += written; 1944 n -= (size_t)written; 1945 } 1946 } 1947 1948 /* Print why exec failed, avoiding stdio. */ 1949 void MAKE_ATTR_DEAD 1950 execDie(const char *af, const char *av) 1951 { 1952 Buffer buf; 1953 1954 Buf_Init(&buf); 1955 Buf_AddStr(&buf, progname); 1956 Buf_AddStr(&buf, ": "); 1957 Buf_AddStr(&buf, af); 1958 Buf_AddStr(&buf, "("); 1959 Buf_AddStr(&buf, av); 1960 Buf_AddStr(&buf, ") failed ("); 1961 Buf_AddStr(&buf, strerror(errno)); 1962 Buf_AddStr(&buf, ")\n"); 1963 1964 write_all(STDERR_FILENO, buf.data, buf.len); 1965 1966 Buf_Done(&buf); 1967 _exit(1); 1968 } 1969 1970 static void 1971 purge_relative_cached_realpaths(void) 1972 { 1973 HashIter hi; 1974 bool more; 1975 1976 HashIter_Init(&hi, &cached_realpaths); 1977 more = HashIter_Next(&hi); 1978 while (more) { 1979 HashEntry *he = hi.entry; 1980 more = HashIter_Next(&hi); 1981 if (he->key[0] != '/') { 1982 DEBUG1(DIR, "cached_realpath: purging %s\n", he->key); 1983 HashTable_DeleteEntry(&cached_realpaths, he); 1984 /* 1985 * XXX: What about the allocated he->value? Either 1986 * free them or document why they cannot be freed. 1987 */ 1988 } 1989 } 1990 } 1991 1992 const char * 1993 cached_realpath(const char *pathname, char *resolved) 1994 { 1995 const char *rp; 1996 1997 if (pathname == NULL || pathname[0] == '\0') 1998 return NULL; 1999 2000 rp = HashTable_FindValue(&cached_realpaths, pathname); 2001 if (rp != NULL) { 2002 /* a hit */ 2003 strncpy(resolved, rp, MAXPATHLEN); 2004 resolved[MAXPATHLEN - 1] = '\0'; 2005 return resolved; 2006 } 2007 2008 rp = realpath(pathname, resolved); 2009 if (rp != NULL) { 2010 HashTable_Set(&cached_realpaths, pathname, bmake_strdup(rp)); 2011 DEBUG2(DIR, "cached_realpath: %s -> %s\n", pathname, rp); 2012 return resolved; 2013 } 2014 2015 /* should we negative-cache? */ 2016 return NULL; 2017 } 2018 2019 /* 2020 * Return true if we should die without noise. 2021 * For example our failing child was a sub-make or failure happened elsewhere. 2022 */ 2023 bool 2024 shouldDieQuietly(GNode *gn, int bf) 2025 { 2026 static int quietly = -1; 2027 2028 if (quietly < 0) { 2029 if (DEBUG(JOB) || 2030 !GetBooleanExpr("${.MAKE.DIE_QUIETLY}", true)) 2031 quietly = 0; 2032 else if (bf >= 0) 2033 quietly = bf; 2034 else 2035 quietly = (gn != NULL && (gn->type & OP_MAKE)) ? 1 : 0; 2036 } 2037 return quietly != 0; 2038 } 2039 2040 static void 2041 SetErrorVars(GNode *gn) 2042 { 2043 StringListNode *ln; 2044 char sts[16]; 2045 2046 /* 2047 * We can print this even if there is no .ERROR target. 2048 */ 2049 snprintf(sts, sizeof(sts), "%d", gn->exit_status); 2050 Global_Set(".ERROR_EXIT", sts); 2051 Global_Set(".ERROR_TARGET", gn->name); 2052 Global_Delete(".ERROR_CMD"); 2053 2054 for (ln = gn->commands.first; ln != NULL; ln = ln->next) { 2055 const char *cmd = ln->datum; 2056 2057 if (cmd == NULL) 2058 break; 2059 Global_Append(".ERROR_CMD", cmd); 2060 } 2061 } 2062 2063 /* 2064 * Print some helpful information in case of an error. 2065 * The caller should exit soon after calling this function. 2066 */ 2067 void 2068 PrintOnError(GNode *gn, const char *msg) 2069 { 2070 static GNode *errorNode = NULL; 2071 2072 if (DEBUG(HASH)) { 2073 Targ_Stats(); 2074 Var_Stats(); 2075 } 2076 2077 if (errorNode != NULL) 2078 return; /* we've been here! */ 2079 2080 printf("%s%s: stopped in %s\n", msg, progname, curdir); 2081 2082 /* we generally want to keep quiet if a sub-make died */ 2083 if (shouldDieQuietly(gn, -1)) 2084 return; 2085 2086 if (gn != NULL) 2087 SetErrorVars(gn); 2088 2089 { 2090 char *errorVarsValues = Var_Subst( 2091 "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2092 SCOPE_GLOBAL, VARE_WANTRES); 2093 /* TODO: handle errors */ 2094 printf("%s", errorVarsValues); 2095 free(errorVarsValues); 2096 } 2097 2098 fflush(stdout); 2099 2100 /* 2101 * Finally, see if there is a .ERROR target, and run it if so. 2102 */ 2103 errorNode = Targ_FindNode(".ERROR"); 2104 if (errorNode != NULL) { 2105 errorNode->type |= OP_SPECIAL; 2106 Compat_Make(errorNode, errorNode); 2107 } 2108 } 2109 2110 void 2111 Main_ExportMAKEFLAGS(bool first) 2112 { 2113 static bool once = true; 2114 char *flags; 2115 2116 if (once != first) 2117 return; 2118 once = false; 2119 2120 flags = Var_Subst( 2121 "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 2122 SCOPE_CMDLINE, VARE_WANTRES); 2123 /* TODO: handle errors */ 2124 if (flags[0] != '\0') 2125 setenv("MAKEFLAGS", flags, 1); 2126 free(flags); 2127 } 2128 2129 char * 2130 getTmpdir(void) 2131 { 2132 static char *tmpdir = NULL; 2133 struct stat st; 2134 2135 if (tmpdir != NULL) 2136 return tmpdir; 2137 2138 /* Honor $TMPDIR if it is valid, strip a trailing '/'. */ 2139 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP ":S,/$,,W}/", 2140 SCOPE_GLOBAL, VARE_WANTRES); 2141 /* TODO: handle errors */ 2142 2143 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2144 free(tmpdir); 2145 tmpdir = bmake_strdup(_PATH_TMP); 2146 } 2147 return tmpdir; 2148 } 2149 2150 /* 2151 * Create and open a temp file using "pattern". 2152 * If tfile is provided, set it to a copy of the filename created. 2153 * Otherwise unlink the file once open. 2154 */ 2155 int 2156 mkTempFile(const char *pattern, char *tfile, size_t tfile_sz) 2157 { 2158 static char *tmpdir = NULL; 2159 char tbuf[MAXPATHLEN]; 2160 int fd; 2161 2162 if (pattern == NULL) 2163 pattern = TMPPAT; 2164 if (tmpdir == NULL) 2165 tmpdir = getTmpdir(); 2166 if (tfile == NULL) { 2167 tfile = tbuf; 2168 tfile_sz = sizeof tbuf; 2169 } 2170 2171 if (pattern[0] == '/') 2172 snprintf(tfile, tfile_sz, "%s", pattern); 2173 else 2174 snprintf(tfile, tfile_sz, "%s%s", tmpdir, pattern); 2175 2176 if ((fd = mkstemp(tfile)) < 0) 2177 Punt("Could not create temporary file %s: %s", tfile, 2178 strerror(errno)); 2179 if (tfile == tbuf) 2180 unlink(tfile); /* we just want the descriptor */ 2181 2182 return fd; 2183 } 2184 2185 /* 2186 * Convert a string representation of a boolean into a boolean value. 2187 * Anything that looks like "No", "False", "Off", "0" etc. is false, 2188 * the empty string is the fallback, everything else is true. 2189 */ 2190 bool 2191 ParseBoolean(const char *s, bool fallback) 2192 { 2193 char ch = ch_tolower(s[0]); 2194 if (ch == '\0') 2195 return fallback; 2196 if (ch == '0' || ch == 'f' || ch == 'n') 2197 return false; 2198 if (ch == 'o') 2199 return ch_tolower(s[1]) != 'f'; 2200 return true; 2201 } 2202
Indexes created Mon Sep 22 13:09:51 GMT 2025