main.c revision 1.607
1 /* $NetBSD: main.c,v 1.607 2024/01/05 22:20:07 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 1.607 2024/01/05 22:20:07 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", 226 fname); 227 exit(2); 228 } 229 free(fname); 230 } 231 232 static void 233 MainParseArgDebug(const char *argvalue) 234 { 235 const char *modules; 236 DebugFlags debug = opts.debug; 237 238 for (modules = argvalue; *modules != '\0'; modules++) { 239 switch (*modules) { 240 case '0': /* undocumented, only intended for tests */ 241 memset(&debug, 0, sizeof(debug)); 242 break; 243 case 'A': 244 memset(&debug, ~0, sizeof(debug)); 245 break; 246 case 'a': 247 debug.DEBUG_ARCH = true; 248 break; 249 case 'C': 250 debug.DEBUG_CWD = true; 251 break; 252 case 'c': 253 debug.DEBUG_COND = true; 254 break; 255 case 'd': 256 debug.DEBUG_DIR = true; 257 break; 258 case 'e': 259 debug.DEBUG_ERROR = true; 260 break; 261 case 'f': 262 debug.DEBUG_FOR = true; 263 break; 264 case 'g': 265 if (modules[1] == '1') { 266 debug.DEBUG_GRAPH1 = true; 267 modules++; 268 } else if (modules[1] == '2') { 269 debug.DEBUG_GRAPH2 = true; 270 modules++; 271 } else if (modules[1] == '3') { 272 debug.DEBUG_GRAPH3 = true; 273 modules++; 274 } 275 break; 276 case 'h': 277 debug.DEBUG_HASH = true; 278 break; 279 case 'j': 280 debug.DEBUG_JOB = true; 281 break; 282 case 'L': 283 opts.strict = true; 284 break; 285 case 'l': 286 debug.DEBUG_LOUD = true; 287 break; 288 case 'M': 289 debug.DEBUG_META = true; 290 break; 291 case 'm': 292 debug.DEBUG_MAKE = true; 293 break; 294 case 'n': 295 debug.DEBUG_SCRIPT = true; 296 break; 297 case 'p': 298 debug.DEBUG_PARSE = true; 299 break; 300 case 's': 301 debug.DEBUG_SUFF = true; 302 break; 303 case 't': 304 debug.DEBUG_TARG = true; 305 break; 306 case 'V': 307 opts.debugVflag = true; 308 break; 309 case 'v': 310 debug.DEBUG_VAR = true; 311 break; 312 case 'x': 313 debug.DEBUG_SHELL = true; 314 break; 315 case 'F': 316 MainParseArgDebugFile(modules + 1); 317 goto finish; 318 default: 319 (void)fprintf(stderr, 320 "%s: illegal argument to d option -- %c\n", 321 progname, *modules); 322 usage(); 323 } 324 } 325 326 finish: 327 opts.debug = debug; 328 329 setvbuf(opts.debug_file, NULL, _IONBF, 0); 330 if (opts.debug_file != stdout) 331 setvbuf(stdout, NULL, _IOLBF, 0); 332 } 333 334 /* Is path relative or does it contain any relative component "." or ".."? */ 335 static bool 336 IsRelativePath(const char *path) 337 { 338 const char *p; 339 340 if (path[0] != '/') 341 return true; 342 p = path; 343 while ((p = strstr(p, "/.")) != NULL) { 344 p += 2; 345 if (*p == '.') 346 p++; 347 if (*p == '/' || *p == '\0') 348 return true; 349 } 350 return false; 351 } 352 353 static void 354 MainParseArgChdir(const char *argvalue) 355 { 356 struct stat sa, sb; 357 358 if (chdir(argvalue) == -1) { 359 (void)fprintf(stderr, "%s: chdir %s: %s\n", 360 progname, argvalue, strerror(errno)); 361 exit(2); /* Not 1 so -q can distinguish error */ 362 } 363 if (getcwd(curdir, MAXPATHLEN) == NULL) { 364 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 365 exit(2); 366 } 367 if (!IsRelativePath(argvalue) && 368 stat(argvalue, &sa) != -1 && 369 stat(curdir, &sb) != -1 && 370 sa.st_ino == sb.st_ino && 371 sa.st_dev == sb.st_dev) 372 strncpy(curdir, argvalue, MAXPATHLEN); 373 ignorePWD = true; 374 } 375 376 static void 377 MainParseArgJobsInternal(const char *argvalue) 378 { 379 char end; 380 if (sscanf(argvalue, "%d,%d%c", &jp_0, &jp_1, &end) != 2) { 381 (void)fprintf(stderr, 382 "%s: internal error -- J option malformed (%s)\n", 383 progname, argvalue); 384 usage(); 385 } 386 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 387 (fcntl(jp_1, F_GETFD, 0) < 0)) { 388 jp_0 = -1; 389 jp_1 = -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 return false; 744 } 745 746 snprintf(objdir, sizeof objdir, "%s", path); 747 Global_Set(".OBJDIR", objdir); 748 setenv("PWD", objdir, 1); 749 Dir_InitDot(); 750 purge_relative_cached_realpaths(); 751 if (opts.enterFlag && strcmp(objdir, curdir) != 0) 752 enterFlagObj = true; 753 return true; 754 } 755 756 static bool 757 SetVarObjdir(bool writable, const char *var, const char *suffix) 758 { 759 FStr path = Var_Value(SCOPE_CMDLINE, var); 760 761 if (path.str == NULL || path.str[0] == '\0') { 762 FStr_Done(&path); 763 return false; 764 } 765 766 Var_Expand(&path, SCOPE_GLOBAL, VARE_WANTRES); 767 768 (void)Main_SetObjdir(writable, "%s%s", path.str, suffix); 769 770 FStr_Done(&path); 771 return true; 772 } 773 774 /* 775 * Splits str into words (in-place, modifying it), adding them to the list. 776 * The string must be kept alive as long as the list. 777 */ 778 void 779 AppendWords(StringList *lp, char *str) 780 { 781 char *p; 782 const char *sep = " \t"; 783 784 for (p = strtok(str, sep); p != NULL; p = strtok(NULL, sep)) 785 Lst_Append(lp, p); 786 } 787 788 #ifdef SIGINFO 789 /*ARGSUSED*/ 790 static void 791 siginfo(int signo MAKE_ATTR_UNUSED) 792 { 793 char dir[MAXPATHLEN]; 794 char str[2 * MAXPATHLEN]; 795 int len; 796 if (getcwd(dir, sizeof dir) == NULL) 797 return; 798 len = snprintf(str, sizeof str, "%s: Working in: %s\n", progname, dir); 799 if (len > 0) 800 (void)write(STDERR_FILENO, str, (size_t)len); 801 } 802 #endif 803 804 /* Allow makefiles some control over the mode we run in. */ 805 static void 806 MakeMode(void) 807 { 808 char *mode = Var_Subst("${.MAKE.MODE:tl}", 809 SCOPE_GLOBAL, VARE_WANTRES); 810 /* TODO: handle errors */ 811 812 if (mode[0] != '\0') { 813 if (strstr(mode, "compat") != NULL) { 814 opts.compatMake = true; 815 forceJobs = false; 816 } 817 #if USE_META 818 if (strstr(mode, "meta") != NULL) 819 meta_mode_init(mode); 820 #endif 821 if (strstr(mode, "randomize-targets") != NULL) 822 opts.randomizeTargets = true; 823 } 824 825 free(mode); 826 } 827 828 static void 829 PrintVar(const char *varname, bool expandVars) 830 { 831 if (strchr(varname, '$') != NULL) { 832 char *evalue = Var_Subst(varname, SCOPE_GLOBAL, VARE_WANTRES); 833 /* TODO: handle errors */ 834 printf("%s\n", evalue); 835 free(evalue); 836 837 } else if (expandVars) { 838 char *expr = str_concat3("${", varname, "}"); 839 char *evalue = Var_Subst(expr, SCOPE_GLOBAL, VARE_WANTRES); 840 /* TODO: handle errors */ 841 free(expr); 842 printf("%s\n", evalue); 843 free(evalue); 844 845 } else { 846 FStr value = Var_Value(SCOPE_GLOBAL, varname); 847 printf("%s\n", value.str != NULL ? value.str : ""); 848 FStr_Done(&value); 849 } 850 } 851 852 /* 853 * Return a bool based on a variable. 854 * 855 * If the knob is not set, return the fallback. 856 * If set, anything that looks or smells like "No", "False", "Off", "0", etc. 857 * is false, otherwise true. 858 */ 859 bool 860 GetBooleanExpr(const char *expr, bool fallback) 861 { 862 char *value; 863 bool res; 864 865 value = Var_Subst(expr, SCOPE_GLOBAL, VARE_WANTRES); 866 /* TODO: handle errors */ 867 res = ParseBoolean(value, fallback); 868 free(value); 869 return res; 870 } 871 872 static void 873 doPrintVars(void) 874 { 875 StringListNode *ln; 876 bool expandVars; 877 878 if (opts.printVars == PVM_EXPANDED) 879 expandVars = true; 880 else if (opts.debugVflag) 881 expandVars = false; 882 else 883 expandVars = GetBooleanExpr("${.MAKE.EXPAND_VARIABLES}", 884 false); 885 886 for (ln = opts.variables.first; ln != NULL; ln = ln->next) { 887 const char *varname = ln->datum; 888 PrintVar(varname, expandVars); 889 } 890 } 891 892 static bool 893 runTargets(void) 894 { 895 GNodeList targs = LST_INIT; /* target nodes to create */ 896 bool outOfDate; /* false if all targets up to date */ 897 898 /* 899 * Have now read the entire graph and need to make a list of 900 * targets to create. If none was given on the command line, 901 * we consult the parsing module to find the main target(s) 902 * to create. 903 */ 904 if (Lst_IsEmpty(&opts.create)) 905 Parse_MainName(&targs); 906 else 907 Targ_FindList(&targs, &opts.create); 908 909 if (!opts.compatMake) { 910 /* 911 * Initialize job module before traversing the graph 912 * now that any .BEGIN and .END targets have been read. 913 * This is done only if the -q flag wasn't given 914 * (to prevent the .BEGIN from being executed should 915 * it exist). 916 */ 917 if (!opts.query) { 918 Job_Init(); 919 jobsRunning = true; 920 } 921 922 /* Traverse the graph, checking on all the targets */ 923 outOfDate = Make_Run(&targs); 924 } else { 925 Compat_MakeAll(&targs); 926 outOfDate = false; 927 } 928 Lst_Done(&targs); /* Don't free the targets themselves. */ 929 return outOfDate; 930 } 931 932 /* 933 * Set up the .TARGETS variable to contain the list of targets to be created. 934 * If none specified, make the variable empty for now, the parser will fill 935 * in the default or .MAIN target later. 936 */ 937 static void 938 InitVarTargets(void) 939 { 940 StringListNode *ln; 941 942 if (Lst_IsEmpty(&opts.create)) { 943 Global_Set(".TARGETS", ""); 944 return; 945 } 946 947 for (ln = opts.create.first; ln != NULL; ln = ln->next) { 948 const char *name = ln->datum; 949 Global_Append(".TARGETS", name); 950 } 951 } 952 953 static void 954 InitRandom(void) 955 { 956 struct timeval tv; 957 958 gettimeofday(&tv, NULL); 959 srandom((unsigned int)(tv.tv_sec + tv.tv_usec)); 960 } 961 962 static const char * 963 InitVarMachine(const struct utsname *utsname MAKE_ATTR_UNUSED) 964 { 965 const char *machine = getenv("MACHINE"); 966 if (machine != NULL) 967 return machine; 968 969 #if defined(MAKE_NATIVE) 970 return utsname->machine; 971 #elif defined(MAKE_MACHINE) 972 return MAKE_MACHINE; 973 #else 974 return "unknown"; 975 #endif 976 } 977 978 static const char * 979 InitVarMachineArch(void) 980 { 981 const char *env = getenv("MACHINE_ARCH"); 982 if (env != NULL) 983 return env; 984 985 #ifdef MAKE_NATIVE 986 { 987 struct utsname utsname; 988 static char machine_arch_buf[sizeof utsname.machine]; 989 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 990 size_t len = sizeof machine_arch_buf; 991 992 if (sysctl(mib, (unsigned int)__arraycount(mib), 993 machine_arch_buf, &len, NULL, 0) < 0) { 994 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", 995 progname, strerror(errno)); 996 exit(2); 997 } 998 999 return machine_arch_buf; 1000 } 1001 #elif defined(MACHINE_ARCH) 1002 return MACHINE_ARCH; 1003 #elif defined(MAKE_MACHINE_ARCH) 1004 return MAKE_MACHINE_ARCH; 1005 #else 1006 return "unknown"; 1007 #endif 1008 } 1009 1010 #ifndef NO_PWD_OVERRIDE 1011 /* 1012 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1013 * since the value of curdir can vary depending on how we got 1014 * here. That is, sitting at a shell prompt (shell that provides $PWD) 1015 * or via subdir.mk, in which case it's likely a shell which does 1016 * not provide it. 1017 * 1018 * So, to stop it breaking this case only, we ignore PWD if 1019 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains an expression. 1020 */ 1021 static void 1022 HandlePWD(const struct stat *curdir_st) 1023 { 1024 char *pwd; 1025 FStr makeobjdir; 1026 struct stat pwd_st; 1027 1028 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1029 return; 1030 1031 if (Var_Exists(SCOPE_CMDLINE, "MAKEOBJDIRPREFIX")) 1032 return; 1033 1034 makeobjdir = Var_Value(SCOPE_CMDLINE, "MAKEOBJDIR"); 1035 if (makeobjdir.str != NULL && strchr(makeobjdir.str, '$') != NULL) 1036 goto ignore_pwd; 1037 1038 if (stat(pwd, &pwd_st) == 0 && 1039 curdir_st->st_ino == pwd_st.st_ino && 1040 curdir_st->st_dev == pwd_st.st_dev) 1041 (void)strncpy(curdir, pwd, MAXPATHLEN); 1042 1043 ignore_pwd: 1044 FStr_Done(&makeobjdir); 1045 } 1046 #endif 1047 1048 /* 1049 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, MAKEOBJDIR is set 1050 * in the environment, try only that value and fall back to .CURDIR if it 1051 * does not exist. 1052 * 1053 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1054 * and finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none of these 1055 * paths exist, just use .CURDIR. 1056 */ 1057 static void 1058 InitObjdir(const char *machine, const char *machine_arch) 1059 { 1060 bool writable; 1061 1062 Dir_InitCur(curdir); 1063 writable = GetBooleanExpr("${MAKE_OBJDIR_CHECK_WRITABLE}", true); 1064 (void)Main_SetObjdir(false, "%s", curdir); 1065 1066 if (!SetVarObjdir(writable, "MAKEOBJDIRPREFIX", curdir) && 1067 !SetVarObjdir(writable, "MAKEOBJDIR", "") && 1068 !Main_SetObjdir(writable, "%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1069 !Main_SetObjdir(writable, "%s.%s", _PATH_OBJDIR, machine) && 1070 !Main_SetObjdir(writable, "%s", _PATH_OBJDIR)) 1071 (void)Main_SetObjdir(writable, "%s%s", _PATH_OBJDIRPREFIX, curdir); 1072 } 1073 1074 /* get rid of resource limit on file descriptors */ 1075 static void 1076 UnlimitFiles(void) 1077 { 1078 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1079 struct rlimit rl; 1080 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1081 rl.rlim_cur != rl.rlim_max) { 1082 rl.rlim_cur = rl.rlim_max; 1083 (void)setrlimit(RLIMIT_NOFILE, &rl); 1084 } 1085 #endif 1086 } 1087 1088 static void 1089 CmdOpts_Init(void) 1090 { 1091 opts.compatMake = false; 1092 memset(&opts.debug, 0, sizeof(opts.debug)); 1093 /* opts.debug_file has already been initialized earlier */ 1094 opts.strict = false; 1095 opts.debugVflag = false; 1096 opts.checkEnvFirst = false; 1097 Lst_Init(&opts.makefiles); 1098 opts.ignoreErrors = false; /* Pay attention to non-zero returns */ 1099 opts.maxJobs = 1; 1100 opts.keepgoing = false; /* Stop on error */ 1101 opts.noRecursiveExecute = false; /* Execute all .MAKE targets */ 1102 opts.noExecute = false; /* Execute all commands */ 1103 opts.query = false; 1104 opts.noBuiltins = false; /* Read the built-in rules */ 1105 opts.silent = false; /* Print commands as executed */ 1106 opts.touch = false; 1107 opts.printVars = PVM_NONE; 1108 Lst_Init(&opts.variables); 1109 opts.parseWarnFatal = false; 1110 opts.enterFlag = false; 1111 opts.varNoExportEnv = false; 1112 Lst_Init(&opts.create); 1113 } 1114 1115 /* 1116 * Initialize MAKE and .MAKE to the path of the executable, so that it can be 1117 * found by execvp(3) and the shells, even after a chdir. 1118 * 1119 * If it's a relative path and contains a '/', resolve it to an absolute path. 1120 * Otherwise keep it as is, assuming it will be found in the PATH. 1121 */ 1122 static void 1123 InitVarMake(const char *argv0) 1124 { 1125 const char *make = argv0; 1126 1127 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) { 1128 char pathbuf[MAXPATHLEN]; 1129 const char *abspath = cached_realpath(argv0, pathbuf); 1130 struct stat st; 1131 if (abspath != NULL && abspath[0] == '/' && 1132 stat(make, &st) == 0) 1133 make = abspath; 1134 } 1135 1136 Global_Set("MAKE", make); 1137 Global_Set(".MAKE", make); 1138 } 1139 1140 /* 1141 * Add the directories from the colon-separated syspath to defSysIncPath. 1142 * After returning, the contents of syspath is unspecified. 1143 */ 1144 static void 1145 InitDefSysIncPath(char *syspath) 1146 { 1147 static char defsyspath[] = _PATH_DEFSYSPATH; 1148 char *start, *p; 1149 1150 /* 1151 * If no user-supplied system path was given (through the -m option) 1152 * add the directories from the DEFSYSPATH (more than one may be given 1153 * as dir1:...:dirn) to the system include path. 1154 */ 1155 if (syspath == NULL || syspath[0] == '\0') 1156 syspath = defsyspath; 1157 else 1158 syspath = bmake_strdup(syspath); 1159 1160 for (start = syspath; *start != '\0'; start = p) { 1161 for (p = start; *p != '\0' && *p != ':'; p++) 1162 continue; 1163 if (*p == ':') 1164 *p++ = '\0'; 1165 1166 /* look for magic parent directory search string */ 1167 if (strncmp(start, ".../", 4) == 0) { 1168 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1169 if (dir != NULL) { 1170 (void)SearchPath_Add(defSysIncPath, dir); 1171 free(dir); 1172 } 1173 } else { 1174 (void)SearchPath_Add(defSysIncPath, start); 1175 } 1176 } 1177 1178 if (syspath != defsyspath) 1179 free(syspath); 1180 } 1181 1182 static void 1183 ReadBuiltinRules(void) 1184 { 1185 StringListNode *ln; 1186 StringList sysMkFiles = LST_INIT; 1187 1188 SearchPath_Expand( 1189 Lst_IsEmpty(&sysIncPath->dirs) ? defSysIncPath : sysIncPath, 1190 _PATH_DEFSYSMK, 1191 &sysMkFiles); 1192 if (Lst_IsEmpty(&sysMkFiles)) 1193 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK); 1194 1195 for (ln = sysMkFiles.first; ln != NULL; ln = ln->next) 1196 if (ReadMakefile(ln->datum)) 1197 break; 1198 1199 if (ln == NULL) 1200 Fatal("%s: cannot open %s.", 1201 progname, (const char *)sysMkFiles.first->datum); 1202 1203 Lst_DoneCall(&sysMkFiles, free); 1204 } 1205 1206 static void 1207 InitMaxJobs(void) 1208 { 1209 char *value; 1210 int n; 1211 1212 if (forceJobs || opts.compatMake || 1213 !Var_Exists(SCOPE_GLOBAL, ".MAKE.JOBS")) 1214 return; 1215 1216 value = Var_Subst("${.MAKE.JOBS}", SCOPE_GLOBAL, VARE_WANTRES); 1217 /* TODO: handle errors */ 1218 n = (int)strtol(value, NULL, 0); 1219 if (n < 1) { 1220 (void)fprintf(stderr, 1221 "%s: illegal value for .MAKE.JOBS " 1222 "-- must be positive integer!\n", 1223 progname); 1224 exit(2); /* Not 1 so -q can distinguish error */ 1225 } 1226 1227 if (n != opts.maxJobs) { 1228 Global_Append(MAKEFLAGS, "-j"); 1229 Global_Append(MAKEFLAGS, value); 1230 } 1231 1232 opts.maxJobs = n; 1233 maxJobTokens = opts.maxJobs; 1234 forceJobs = true; 1235 free(value); 1236 } 1237 1238 /* 1239 * For compatibility, look at the directories in the VPATH variable 1240 * and add them to the search path, if the variable is defined. The 1241 * variable's value is in the same format as the PATH environment 1242 * variable, i.e. <directory>:<directory>:<directory>... 1243 */ 1244 static void 1245 InitVpath(void) 1246 { 1247 char *vpath, savec, *path; 1248 if (!Var_Exists(SCOPE_CMDLINE, "VPATH")) 1249 return; 1250 1251 vpath = Var_Subst("${VPATH}", SCOPE_CMDLINE, VARE_WANTRES); 1252 /* TODO: handle errors */ 1253 path = vpath; 1254 do { 1255 char *p; 1256 /* skip to end of directory */ 1257 for (p = path; *p != ':' && *p != '\0'; p++) 1258 continue; 1259 /* Save terminator character so know when to stop */ 1260 savec = *p; 1261 *p = '\0'; 1262 /* Add directory to search path */ 1263 (void)SearchPath_Add(&dirSearchPath, path); 1264 *p = savec; 1265 path = p + 1; 1266 } while (savec == ':'); 1267 free(vpath); 1268 } 1269 1270 static void 1271 ReadAllMakefiles(const StringList *makefiles) 1272 { 1273 StringListNode *ln; 1274 1275 for (ln = makefiles->first; ln != NULL; ln = ln->next) { 1276 const char *fname = ln->datum; 1277 if (!ReadMakefile(fname)) 1278 Fatal("%s: cannot open %s.", progname, fname); 1279 } 1280 } 1281 1282 static void 1283 ReadFirstDefaultMakefile(void) 1284 { 1285 StringList makefiles = LST_INIT; 1286 StringListNode *ln; 1287 char *prefs = Var_Subst("${.MAKE.MAKEFILE_PREFERENCE}", 1288 SCOPE_CMDLINE, VARE_WANTRES); 1289 /* TODO: handle errors */ 1290 1291 AppendWords(&makefiles, prefs); 1292 1293 for (ln = makefiles.first; ln != NULL; ln = ln->next) 1294 if (ReadMakefile(ln->datum)) 1295 break; 1296 1297 Lst_Done(&makefiles); 1298 free(prefs); 1299 } 1300 1301 /* 1302 * Initialize variables such as MAKE, MACHINE, .MAKEFLAGS. 1303 * Initialize a few modules. 1304 * Parse the arguments from MAKEFLAGS and the command line. 1305 */ 1306 static void 1307 main_Init(int argc, char **argv) 1308 { 1309 struct stat sa; 1310 const char *machine; 1311 const char *machine_arch; 1312 char *syspath = getenv("MAKESYSPATH"); 1313 struct utsname utsname; 1314 1315 /* default to writing debug to stderr */ 1316 opts.debug_file = stderr; 1317 1318 Str_Intern_Init(); 1319 HashTable_Init(&cached_realpaths); 1320 1321 #ifdef SIGINFO 1322 (void)bmake_signal(SIGINFO, siginfo); 1323 #endif 1324 1325 InitRandom(); 1326 1327 progname = str_basename(argv[0]); 1328 1329 UnlimitFiles(); 1330 1331 if (uname(&utsname) == -1) { 1332 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1333 strerror(errno)); 1334 exit(2); 1335 } 1336 1337 machine = InitVarMachine(&utsname); 1338 machine_arch = InitVarMachineArch(); 1339 1340 myPid = getpid(); /* remember this for vFork() */ 1341 1342 /* Just in case MAKEOBJDIR wants us to do something tricky. */ 1343 Targ_Init(); 1344 Var_Init(); 1345 Global_Set_ReadOnly(".MAKE.OS", utsname.sysname); 1346 Global_Set("MACHINE", machine); 1347 Global_Set("MACHINE_ARCH", machine_arch); 1348 #ifdef MAKE_VERSION 1349 Global_Set("MAKE_VERSION", MAKE_VERSION); 1350 #endif 1351 Global_Set_ReadOnly(".newline", "\n"); 1352 #ifndef MAKEFILE_PREFERENCE_LIST 1353 /* This is the traditional preference for makefiles. */ 1354 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1355 #endif 1356 Global_Set(".MAKE.MAKEFILE_PREFERENCE", MAKEFILE_PREFERENCE_LIST); 1357 Global_Set(".MAKE.DEPENDFILE", ".depend"); 1358 /* Tell makefiles like jobs.mk whether we support -jC */ 1359 #ifdef _SC_NPROCESSORS_ONLN 1360 Global_Set_ReadOnly(".MAKE.JOBS.C", "yes"); 1361 #else 1362 Global_Set_ReadOnly(".MAKE.JOBS.C", "no"); 1363 #endif 1364 1365 CmdOpts_Init(); 1366 allPrecious = false; /* Remove targets when interrupted */ 1367 deleteOnError = false; /* Historical default behavior */ 1368 jobsRunning = false; 1369 1370 maxJobTokens = opts.maxJobs; 1371 ignorePWD = false; 1372 1373 /* 1374 * Initialize the parsing, directory and variable modules to prepare 1375 * for the reading of inclusion paths and variable settings on the 1376 * command line 1377 */ 1378 1379 /* 1380 * Initialize various variables. 1381 * MAKE also gets this name, for compatibility 1382 * .MAKEFLAGS gets set to the empty string just in case. 1383 * MFLAGS also gets initialized empty, for compatibility. 1384 */ 1385 Parse_Init(); 1386 InitVarMake(argv[0]); 1387 Global_Set(MAKEFLAGS, ""); 1388 Global_Set(".MAKEOVERRIDES", ""); 1389 Global_Set("MFLAGS", ""); 1390 Global_Set(".ALLTARGETS", ""); 1391 Var_Set(SCOPE_CMDLINE, ".MAKE.LEVEL.ENV", MAKE_LEVEL_ENV); 1392 1393 /* Set some other useful variables. */ 1394 { 1395 char buf[64], *ep = getenv(MAKE_LEVEL_ENV); 1396 1397 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0; 1398 if (makelevel < 0) 1399 makelevel = 0; 1400 snprintf(buf, sizeof buf, "%d", makelevel); 1401 Global_Set(".MAKE.LEVEL", buf); 1402 snprintf(buf, sizeof buf, "%u", myPid); 1403 Global_Set_ReadOnly(".MAKE.PID", buf); 1404 snprintf(buf, sizeof buf, "%u", getppid()); 1405 Global_Set_ReadOnly(".MAKE.PPID", buf); 1406 snprintf(buf, sizeof buf, "%u", getuid()); 1407 Global_Set_ReadOnly(".MAKE.UID", buf); 1408 snprintf(buf, sizeof buf, "%u", getgid()); 1409 Global_Set_ReadOnly(".MAKE.GID", buf); 1410 } 1411 if (makelevel > 0) { 1412 char pn[1024]; 1413 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel); 1414 progname = bmake_strdup(pn); 1415 } 1416 1417 #ifdef USE_META 1418 meta_init(); 1419 #endif 1420 Dir_Init(); 1421 1422 #ifdef POSIX 1423 { 1424 char *makeflags = explode(getenv("MAKEFLAGS")); 1425 Main_ParseArgLine(makeflags); 1426 free(makeflags); 1427 } 1428 #else 1429 /* 1430 * First snag any flags out of the MAKE environment variable. 1431 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1432 * in a different format). 1433 */ 1434 Main_ParseArgLine(getenv("MAKE")); 1435 #endif 1436 1437 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1438 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1439 progname, strerror(errno)); 1440 exit(2); 1441 } 1442 1443 MainParseArgs(argc, argv); 1444 1445 if (opts.enterFlag) 1446 printf("%s: Entering directory `%s'\n", progname, curdir); 1447 1448 if (stat(curdir, &sa) == -1) { 1449 (void)fprintf(stderr, "%s: %s: %s.\n", 1450 progname, curdir, strerror(errno)); 1451 exit(2); 1452 } 1453 1454 #ifndef NO_PWD_OVERRIDE 1455 HandlePWD(&sa); 1456 #endif 1457 Global_Set(".CURDIR", curdir); 1458 1459 InitObjdir(machine, machine_arch); 1460 1461 Arch_Init(); 1462 Suff_Init(); 1463 Trace_Init(tracefile); 1464 1465 defaultNode = NULL; 1466 (void)time(&now); 1467 1468 Trace_Log(MAKESTART, NULL); 1469 1470 InitVarTargets(); 1471 1472 InitDefSysIncPath(syspath); 1473 } 1474 1475 /* 1476 * Read the system makefile followed by either makefile, Makefile or the 1477 * files given by the -f option. Exit on parse errors. 1478 */ 1479 static void 1480 main_ReadFiles(void) 1481 { 1482 1483 if (Lst_IsEmpty(&sysIncPath->dirs)) 1484 SearchPath_AddAll(sysIncPath, defSysIncPath); 1485 1486 Dir_SetSYSPATH(); 1487 if (!opts.noBuiltins) 1488 ReadBuiltinRules(); 1489 1490 posix_state = PS_MAYBE_NEXT_LINE; 1491 if (!Lst_IsEmpty(&opts.makefiles)) 1492 ReadAllMakefiles(&opts.makefiles); 1493 else 1494 ReadFirstDefaultMakefile(); 1495 } 1496 1497 /* Compute the dependency graph. */ 1498 static void 1499 main_PrepareMaking(void) 1500 { 1501 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1502 if (!opts.noBuiltins || opts.printVars == PVM_NONE) { 1503 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE}", 1504 SCOPE_CMDLINE, VARE_WANTRES); 1505 if (makeDependfile[0] != '\0') { 1506 /* TODO: handle errors */ 1507 doing_depend = true; 1508 (void)ReadMakefile(makeDependfile); 1509 doing_depend = false; 1510 } 1511 } 1512 1513 if (enterFlagObj) 1514 printf("%s: Entering directory `%s'\n", progname, objdir); 1515 1516 MakeMode(); 1517 1518 { 1519 FStr makeflags = Var_Value(SCOPE_GLOBAL, MAKEFLAGS); 1520 Global_Append("MFLAGS", makeflags.str); 1521 FStr_Done(&makeflags); 1522 } 1523 1524 InitMaxJobs(); 1525 1526 if (!opts.compatMake && !forceJobs) 1527 opts.compatMake = true; 1528 1529 if (!opts.compatMake) 1530 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1531 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1532 jp_0, jp_1, opts.maxJobs, maxJobTokens, opts.compatMake ? 1 : 0); 1533 1534 if (opts.printVars == PVM_NONE) 1535 Main_ExportMAKEFLAGS(true); /* initial export */ 1536 1537 InitVpath(); 1538 1539 /* 1540 * Now that all search paths have been read for suffixes et al, it's 1541 * time to add the default search path to their lists... 1542 */ 1543 Suff_ExtendPaths(); 1544 1545 /* 1546 * Propagate attributes through :: dependency lists. 1547 */ 1548 Targ_Propagate(); 1549 1550 /* print the initial graph, if the user requested it */ 1551 if (DEBUG(GRAPH1)) 1552 Targ_PrintGraph(1); 1553 } 1554 1555 /* 1556 * Make the targets. 1557 * If the -v or -V options are given, print variables instead. 1558 * Return whether any of the targets is out-of-date. 1559 */ 1560 static bool 1561 main_Run(void) 1562 { 1563 if (opts.printVars != PVM_NONE) { 1564 /* print the values of any variables requested by the user */ 1565 doPrintVars(); 1566 return false; 1567 } else { 1568 return runTargets(); 1569 } 1570 } 1571 1572 /* Clean up after making the targets. */ 1573 static void 1574 main_CleanUp(void) 1575 { 1576 #ifdef CLEANUP 1577 Lst_DoneCall(&opts.variables, free); 1578 Lst_DoneCall(&opts.makefiles, free); 1579 Lst_DoneCall(&opts.create, free); 1580 #endif 1581 1582 if (DEBUG(GRAPH2)) 1583 Targ_PrintGraph(2); 1584 1585 Trace_Log(MAKEEND, NULL); 1586 1587 if (enterFlagObj) 1588 printf("%s: Leaving directory `%s'\n", progname, objdir); 1589 if (opts.enterFlag) 1590 printf("%s: Leaving directory `%s'\n", progname, curdir); 1591 1592 #ifdef USE_META 1593 meta_finish(); 1594 #endif 1595 Suff_End(); 1596 Targ_End(); 1597 Arch_End(); 1598 Var_End(); 1599 Parse_End(); 1600 Dir_End(); 1601 Job_End(); 1602 Trace_End(); 1603 Str_Intern_End(); 1604 } 1605 1606 /* Determine the exit code. */ 1607 static int 1608 main_Exit(bool outOfDate) 1609 { 1610 if (opts.strict && (main_errors > 0 || Parse_NumErrors() > 0)) 1611 return 2; /* Not 1 so -q can distinguish error */ 1612 return outOfDate ? 1 : 0; 1613 } 1614 1615 int 1616 main(int argc, char **argv) 1617 { 1618 bool outOfDate; 1619 1620 main_Init(argc, argv); 1621 main_ReadFiles(); 1622 main_PrepareMaking(); 1623 outOfDate = main_Run(); 1624 main_CleanUp(); 1625 return main_Exit(outOfDate); 1626 } 1627 1628 /* 1629 * Open and parse the given makefile, with all its side effects. 1630 * Return false if the file could not be opened. 1631 */ 1632 static bool 1633 ReadMakefile(const char *fname) 1634 { 1635 int fd; 1636 char *name, *path = NULL; 1637 1638 if (strcmp(fname, "-") == 0) { 1639 Parse_File("(stdin)", -1); 1640 Var_Set(SCOPE_INTERNAL, "MAKEFILE", ""); 1641 } else { 1642 /* if we've chdir'd, rebuild the path name */ 1643 if (strcmp(curdir, objdir) != 0 && *fname != '/') { 1644 path = str_concat3(curdir, "/", fname); 1645 fd = open(path, O_RDONLY); 1646 if (fd != -1) { 1647 fname = path; 1648 goto found; 1649 } 1650 free(path); 1651 1652 /* If curdir failed, try objdir (ala .depend) */ 1653 path = str_concat3(objdir, "/", fname); 1654 fd = open(path, O_RDONLY); 1655 if (fd != -1) { 1656 fname = path; 1657 goto found; 1658 } 1659 } else { 1660 fd = open(fname, O_RDONLY); 1661 if (fd != -1) 1662 goto found; 1663 } 1664 /* look in -I and system include directories. */ 1665 name = Dir_FindFile(fname, parseIncPath); 1666 if (name == NULL) { 1667 SearchPath *sysInc = Lst_IsEmpty(&sysIncPath->dirs) 1668 ? defSysIncPath : sysIncPath; 1669 name = Dir_FindFile(fname, sysInc); 1670 } 1671 if (name == NULL || (fd = open(name, O_RDONLY)) == -1) { 1672 free(name); 1673 free(path); 1674 return false; 1675 } 1676 fname = name; 1677 /* 1678 * set the MAKEFILE variable desired by System V fans -- the 1679 * placement of the setting here means it gets set to the last 1680 * makefile specified, as it is set by SysV make. 1681 */ 1682 found: 1683 if (!doing_depend) 1684 Var_Set(SCOPE_INTERNAL, "MAKEFILE", fname); 1685 Parse_File(fname, fd); 1686 } 1687 free(path); 1688 return true; 1689 } 1690 1691 /* 1692 * Execute the command in cmd, and return its output (only stdout, not 1693 * stderr, possibly empty). In the output, replace newlines with spaces. 1694 */ 1695 char * 1696 Cmd_Exec(const char *cmd, char **error) 1697 { 1698 const char *args[4]; /* Arguments for invoking the shell */ 1699 int pipefds[2]; 1700 int cpid; /* Child PID */ 1701 int pid; /* PID from wait() */ 1702 int status; /* command exit status */ 1703 Buffer buf; /* buffer to store the result */ 1704 ssize_t bytes_read; 1705 char *output; 1706 char *p; 1707 int saved_errno; 1708 char cmd_file[MAXPATHLEN]; 1709 size_t cmd_len; 1710 int cmd_fd = -1; 1711 1712 if (shellPath == NULL) 1713 Shell_Init(); 1714 1715 cmd_len = strlen(cmd); 1716 if (cmd_len > 1000) { 1717 cmd_fd = mkTempFile(NULL, cmd_file, sizeof(cmd_file)); 1718 if (cmd_fd >= 0) { 1719 ssize_t n; 1720 1721 n = write(cmd_fd, cmd, cmd_len); 1722 close(cmd_fd); 1723 if (n < (ssize_t)cmd_len) { 1724 unlink(cmd_file); 1725 cmd_fd = -1; 1726 } 1727 } 1728 } 1729 1730 args[0] = shellName; 1731 if (cmd_fd >= 0) { 1732 args[1] = cmd_file; 1733 args[2] = NULL; 1734 } else { 1735 cmd_file[0] = '\0'; 1736 args[1] = "-c"; 1737 args[2] = cmd; 1738 args[3] = NULL; 1739 } 1740 DEBUG1(VAR, "Capturing the output of command \"%s\"\n", cmd); 1741 1742 if (pipe(pipefds) == -1) { 1743 *error = str_concat3( 1744 "Couldn't create pipe for \"", cmd, "\""); 1745 return bmake_strdup(""); 1746 } 1747 1748 Var_ReexportVars(); 1749 1750 switch (cpid = vfork()) { 1751 case 0: 1752 (void)close(pipefds[0]); 1753 (void)dup2(pipefds[1], STDOUT_FILENO); 1754 (void)close(pipefds[1]); 1755 1756 (void)execv(shellPath, UNCONST(args)); 1757 _exit(1); 1758 /* NOTREACHED */ 1759 1760 case -1: 1761 *error = str_concat3("Couldn't exec \"", cmd, "\""); 1762 return bmake_strdup(""); 1763 } 1764 1765 (void)close(pipefds[1]); /* No need for the writing half */ 1766 1767 saved_errno = 0; 1768 Buf_Init(&buf); 1769 1770 do { 1771 char result[BUFSIZ]; 1772 bytes_read = read(pipefds[0], result, sizeof result); 1773 if (bytes_read > 0) 1774 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1775 } while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1776 if (bytes_read == -1) 1777 saved_errno = errno; 1778 1779 (void)close(pipefds[0]); /* Close the input side of the pipe. */ 1780 1781 while ((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0) 1782 JobReapChild(pid, status, false); 1783 1784 if (Buf_EndsWith(&buf, '\n')) 1785 buf.data[buf.len - 1] = '\0'; 1786 1787 output = Buf_DoneData(&buf); 1788 for (p = output; *p != '\0'; p++) 1789 if (*p == '\n') 1790 *p = ' '; 1791 1792 if (WIFSIGNALED(status)) 1793 *error = str_concat3("\"", cmd, "\" exited on a signal"); 1794 else if (WEXITSTATUS(status) != 0) 1795 *error = str_concat3( 1796 "\"", cmd, "\" returned non-zero status"); 1797 else if (saved_errno != 0) 1798 *error = str_concat3( 1799 "Couldn't read shell's output for \"", cmd, "\""); 1800 else 1801 *error = NULL; 1802 if (cmd_file[0] != '\0') 1803 unlink(cmd_file); 1804 return output; 1805 } 1806 1807 /* 1808 * Print a printf-style error message. 1809 * 1810 * In default mode, this error message has no consequences, for compatibility 1811 * reasons, in particular it does not affect the exit status. Only in lint 1812 * mode (-dL) it does. 1813 */ 1814 void 1815 Error(const char *fmt, ...) 1816 { 1817 va_list ap; 1818 FILE *f; 1819 1820 f = opts.debug_file; 1821 if (f == stdout) 1822 f = stderr; 1823 (void)fflush(stdout); 1824 1825 for (;;) { 1826 fprintf(f, "%s: ", progname); 1827 va_start(ap, fmt); 1828 (void)vfprintf(f, fmt, ap); 1829 va_end(ap); 1830 (void)fprintf(f, "\n"); 1831 (void)fflush(f); 1832 if (f == stderr) 1833 break; 1834 f = stderr; 1835 } 1836 main_errors++; 1837 } 1838 1839 /* 1840 * Wait for any running jobs to finish, then produce an error message, 1841 * finally exit immediately. 1842 * 1843 * Exiting immediately differs from Parse_Error, which exits only after the 1844 * current top-level makefile has been parsed completely. 1845 */ 1846 void 1847 Fatal(const char *fmt, ...) 1848 { 1849 va_list ap; 1850 1851 if (jobsRunning) 1852 Job_Wait(); 1853 1854 (void)fflush(stdout); 1855 va_start(ap, fmt); 1856 (void)vfprintf(stderr, fmt, ap); 1857 va_end(ap); 1858 (void)fprintf(stderr, "\n"); 1859 (void)fflush(stderr); 1860 PrintStackTrace(true); 1861 1862 PrintOnError(NULL, "\n"); 1863 1864 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1865 Targ_PrintGraph(2); 1866 Trace_Log(MAKEERROR, NULL); 1867 exit(2); /* Not 1 so -q can distinguish error */ 1868 } 1869 1870 /* 1871 * Major exception once jobs are being created. 1872 * Kills all jobs, prints a message and exits. 1873 */ 1874 void 1875 Punt(const char *fmt, ...) 1876 { 1877 va_list ap; 1878 1879 (void)fflush(stdout); 1880 (void)fprintf(stderr, "%s: ", progname); 1881 va_start(ap, fmt); 1882 (void)vfprintf(stderr, fmt, ap); 1883 va_end(ap); 1884 (void)fprintf(stderr, "\n"); 1885 (void)fflush(stderr); 1886 1887 PrintOnError(NULL, "\n"); 1888 1889 DieHorribly(); 1890 } 1891 1892 /* Exit without giving a message. */ 1893 void 1894 DieHorribly(void) 1895 { 1896 if (jobsRunning) 1897 Job_AbortAll(); 1898 if (DEBUG(GRAPH2)) 1899 Targ_PrintGraph(2); 1900 Trace_Log(MAKEERROR, NULL); 1901 exit(2); /* Not 1 so -q can distinguish error */ 1902 } 1903 1904 /* 1905 * Called when aborting due to errors in child shell to signal abnormal exit. 1906 * The program exits. 1907 * Errors is the number of errors encountered in Make_Make. 1908 */ 1909 void 1910 Finish(int errs) 1911 { 1912 if (shouldDieQuietly(NULL, -1)) 1913 exit(2); 1914 Fatal("%d error%s", errs, errs == 1 ? "" : "s"); 1915 } 1916 1917 int 1918 unlink_file(const char *file) 1919 { 1920 struct stat st; 1921 1922 if (lstat(file, &st) == -1) 1923 return -1; 1924 1925 if (S_ISDIR(st.st_mode)) { 1926 /* 1927 * POSIX says for unlink: "The path argument shall not name 1928 * a directory unless [...]". 1929 */ 1930 errno = EISDIR; 1931 return -1; 1932 } 1933 return unlink(file); 1934 } 1935 1936 static void 1937 write_all(int fd, const void *data, size_t n) 1938 { 1939 const char *mem = data; 1940 1941 while (n > 0) { 1942 ssize_t written = write(fd, mem, n); 1943 /* XXX: Should this EAGAIN be EINTR? */ 1944 if (written == -1 && errno == EAGAIN) 1945 continue; 1946 if (written == -1) 1947 break; 1948 mem += written; 1949 n -= (size_t)written; 1950 } 1951 } 1952 1953 /* Print why exec failed, avoiding stdio. */ 1954 void MAKE_ATTR_DEAD 1955 execDie(const char *af, const char *av) 1956 { 1957 Buffer buf; 1958 1959 Buf_Init(&buf); 1960 Buf_AddStr(&buf, progname); 1961 Buf_AddStr(&buf, ": "); 1962 Buf_AddStr(&buf, af); 1963 Buf_AddStr(&buf, "("); 1964 Buf_AddStr(&buf, av); 1965 Buf_AddStr(&buf, ") failed ("); 1966 Buf_AddStr(&buf, strerror(errno)); 1967 Buf_AddStr(&buf, ")\n"); 1968 1969 write_all(STDERR_FILENO, buf.data, buf.len); 1970 1971 Buf_Done(&buf); 1972 _exit(1); 1973 } 1974 1975 static void 1976 purge_relative_cached_realpaths(void) 1977 { 1978 HashEntry *he, *next; 1979 HashIter hi; 1980 1981 HashIter_Init(&hi, &cached_realpaths); 1982 he = HashIter_Next(&hi); 1983 while (he != NULL) { 1984 next = HashIter_Next(&hi); 1985 if (he->key[0] != '/') { 1986 DEBUG1(DIR, "cached_realpath: purging %s\n", he->key); 1987 HashTable_DeleteEntry(&cached_realpaths, he); 1988 /* 1989 * XXX: What about the allocated he->value? Either 1990 * free them or document why they cannot be freed. 1991 */ 1992 } 1993 he = next; 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 /* a hit */ 2008 strncpy(resolved, rp, MAXPATHLEN); 2009 resolved[MAXPATHLEN - 1] = '\0'; 2010 return resolved; 2011 } 2012 2013 rp = realpath(pathname, resolved); 2014 if (rp != NULL) { 2015 HashTable_Set(&cached_realpaths, pathname, bmake_strdup(rp)); 2016 DEBUG2(DIR, "cached_realpath: %s -> %s\n", pathname, rp); 2017 return resolved; 2018 } 2019 2020 /* should we negative-cache? */ 2021 return NULL; 2022 } 2023 2024 /* 2025 * Return true if we should die without noise. 2026 * For example our failing child was a sub-make or failure happened elsewhere. 2027 */ 2028 bool 2029 shouldDieQuietly(GNode *gn, int bf) 2030 { 2031 static int quietly = -1; 2032 2033 if (quietly < 0) { 2034 if (DEBUG(JOB) || 2035 !GetBooleanExpr("${.MAKE.DIE_QUIETLY}", true)) 2036 quietly = 0; 2037 else if (bf >= 0) 2038 quietly = bf; 2039 else 2040 quietly = (gn != NULL && (gn->type & OP_MAKE)) ? 1 : 0; 2041 } 2042 return quietly != 0; 2043 } 2044 2045 static void 2046 SetErrorVars(GNode *gn) 2047 { 2048 StringListNode *ln; 2049 2050 /* 2051 * We can print this even if there is no .ERROR target. 2052 */ 2053 Global_Set(".ERROR_TARGET", gn->name); 2054 Global_Delete(".ERROR_CMD"); 2055 2056 for (ln = gn->commands.first; ln != NULL; ln = ln->next) { 2057 const char *cmd = ln->datum; 2058 2059 if (cmd == NULL) 2060 break; 2061 Global_Append(".ERROR_CMD", cmd); 2062 } 2063 } 2064 2065 /* 2066 * Print some helpful information in case of an error. 2067 * The caller should exit soon after calling this function. 2068 */ 2069 void 2070 PrintOnError(GNode *gn, const char *msg) 2071 { 2072 static GNode *errorNode = NULL; 2073 2074 if (DEBUG(HASH)) { 2075 Targ_Stats(); 2076 Var_Stats(); 2077 } 2078 2079 if (errorNode != NULL) 2080 return; /* we've been here! */ 2081 2082 printf("%s%s: stopped in %s\n", msg, progname, curdir); 2083 2084 /* we generally want to keep quiet if a sub-make died */ 2085 if (shouldDieQuietly(gn, -1)) 2086 return; 2087 2088 if (gn != NULL) 2089 SetErrorVars(gn); 2090 2091 { 2092 char *errorVarsValues = Var_Subst( 2093 "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2094 SCOPE_GLOBAL, VARE_WANTRES); 2095 /* TODO: handle errors */ 2096 printf("%s", errorVarsValues); 2097 free(errorVarsValues); 2098 } 2099 2100 fflush(stdout); 2101 2102 /* 2103 * Finally, see if there is a .ERROR target, and run it if so. 2104 */ 2105 errorNode = Targ_FindNode(".ERROR"); 2106 if (errorNode != NULL) { 2107 errorNode->type |= OP_SPECIAL; 2108 Compat_Make(errorNode, errorNode); 2109 } 2110 } 2111 2112 void 2113 Main_ExportMAKEFLAGS(bool first) 2114 { 2115 static bool once = true; 2116 char *flags; 2117 2118 if (once != first) 2119 return; 2120 once = false; 2121 2122 flags = Var_Subst( 2123 "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 2124 SCOPE_CMDLINE, VARE_WANTRES); 2125 /* TODO: handle errors */ 2126 if (flags[0] != '\0') { 2127 #ifdef POSIX 2128 setenv("MAKEFLAGS", flags, 1); 2129 #else 2130 setenv("MAKE", flags, 1); 2131 #endif 2132 } 2133 } 2134 2135 char * 2136 getTmpdir(void) 2137 { 2138 static char *tmpdir = NULL; 2139 struct stat st; 2140 2141 if (tmpdir != NULL) 2142 return tmpdir; 2143 2144 /* Honor $TMPDIR if it is valid, strip a trailing '/'. */ 2145 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP ":S,/$,,W}/", 2146 SCOPE_GLOBAL, VARE_WANTRES); 2147 /* TODO: handle errors */ 2148 2149 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2150 free(tmpdir); 2151 tmpdir = bmake_strdup(_PATH_TMP); 2152 } 2153 return tmpdir; 2154 } 2155 2156 /* 2157 * Create and open a temp file using "pattern". 2158 * If tfile is provided, set it to a copy of the filename created. 2159 * Otherwise unlink the file once open. 2160 */ 2161 int 2162 mkTempFile(const char *pattern, char *tfile, size_t tfile_sz) 2163 { 2164 static char *tmpdir = NULL; 2165 char tbuf[MAXPATHLEN]; 2166 int fd; 2167 2168 if (pattern == NULL) 2169 pattern = TMPPAT; 2170 if (tmpdir == NULL) 2171 tmpdir = getTmpdir(); 2172 if (tfile == NULL) { 2173 tfile = tbuf; 2174 tfile_sz = sizeof tbuf; 2175 } 2176 2177 if (pattern[0] == '/') 2178 snprintf(tfile, tfile_sz, "%s", pattern); 2179 else 2180 snprintf(tfile, tfile_sz, "%s%s", tmpdir, pattern); 2181 2182 if ((fd = mkstemp(tfile)) < 0) 2183 Punt("Could not create temporary file %s: %s", tfile, 2184 strerror(errno)); 2185 if (tfile == tbuf) 2186 unlink(tfile); /* we just want the descriptor */ 2187 2188 return fd; 2189 } 2190 2191 /* 2192 * Convert a string representation of a boolean into a boolean value. 2193 * Anything that looks like "No", "False", "Off", "0" etc. is false, 2194 * the empty string is the fallback, everything else is true. 2195 */ 2196 bool 2197 ParseBoolean(const char *s, bool fallback) 2198 { 2199 char ch = ch_tolower(s[0]); 2200 if (ch == '\0') 2201 return fallback; 2202 if (ch == '0' || ch == 'f' || ch == 'n') 2203 return false; 2204 if (ch == 'o') 2205 return ch_tolower(s[1]) != 'f'; 2206 return true; 2207 } 2208
Indexes created Mon Sep 22 13:09:51 GMT 2025