main.c revision 1.649
1 /* $NetBSD: main.c,v 1.649 2025/05/18 06:24:27 rillig Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 /* 72 * The main file for this entire program. Exit routines etc. reside here. 73 * 74 * Utility functions defined in this file: 75 * 76 * Main_ParseArgLine 77 * Parse and process command line arguments from a 78 * single string. Used to implement the special targets 79 * .MFLAGS and .MAKEFLAGS. 80 * 81 * Error Print a tagged error message. 82 * 83 * Fatal Print an error message and exit. 84 * 85 * Punt Abort all jobs and exit with a message. 86 */ 87 88 #include <sys/types.h> 89 #include <sys/time.h> 90 #include <sys/param.h> 91 #include <sys/resource.h> 92 #include <sys/stat.h> 93 #ifdef MAKE_NATIVE 94 #include <sys/sysctl.h> 95 #endif 96 #include <sys/utsname.h> 97 #include <sys/wait.h> 98 99 #include <errno.h> 100 #include <signal.h> 101 #include <stdarg.h> 102 #include <time.h> 103 104 #include "make.h" 105 #include "dir.h" 106 #include "job.h" 107 #ifdef USE_META 108 # include "meta.h" 109 #endif 110 #include "pathnames.h" 111 #include "trace.h" 112 113 /* "@(#)main.c 8.3 (Berkeley) 3/19/94" */ 114 MAKE_RCSID("$NetBSD: main.c,v 1.649 2025/05/18 06:24:27 rillig Exp $"); 115 #if defined(MAKE_NATIVE) 116 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993 " 117 "The Regents of the University of California. " 118 "All rights reserved."); 119 #endif 120 121 CmdOpts opts; 122 time_t now; /* Time at start of make */ 123 GNode *defaultNode; /* .DEFAULT node */ 124 bool allPrecious; /* .PRECIOUS given on a line by itself */ 125 bool deleteOnError; /* .DELETE_ON_ERROR: set */ 126 127 static int maxJobTokens; /* -j argument */ 128 static bool enterFlagObj; /* -w and objdir != srcdir */ 129 130 static int tokenPoolReader = -1, tokenPoolWriter = -1; 131 bool doing_depend; /* Set while reading .depend */ 132 static bool jobsRunning; /* true if the jobs might be running */ 133 static const char *tracefile; 134 static bool ReadMakefile(const char *); 135 static void purge_relative_cached_realpaths(void); 136 137 static bool ignorePWD; /* if we use -C, PWD is meaningless */ 138 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 139 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 140 const char *progname; 141 char *makeDependfile; 142 pid_t myPid; 143 int makelevel; 144 145 bool forceJobs = false; 146 static int main_errors = 0; 147 static HashTable cached_realpaths; 148 149 /* 150 * For compatibility with the POSIX version of MAKEFLAGS that includes 151 * all the options without '-', convert 'flags' to '-f -l -a -g -s '. 152 */ 153 static char * 154 explode(const char *flags) 155 { 156 char *exploded, *ep; 157 const char *p; 158 159 if (flags == NULL) 160 return NULL; 161 162 for (p = flags; *p != '\0'; p++) 163 if (!ch_isalpha(*p)) 164 return bmake_strdup(flags); 165 166 exploded = bmake_malloc((size_t)(p - flags) * 3 + 1); 167 for (p = flags, ep = exploded; *p != '\0'; p++) { 168 *ep++ = '-'; 169 *ep++ = *p; 170 *ep++ = ' '; 171 } 172 *ep = '\0'; 173 return exploded; 174 } 175 176 MAKE_ATTR_DEAD static void 177 usage(void) 178 { 179 size_t prognameLen = strcspn(progname, "["); 180 181 (void)fprintf(stderr, 182 "usage: %.*s [-BeikNnqrSstWwX]\n" 183 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 184 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 185 " [-V variable] [-v variable] [variable=value] [target ...]\n", 186 (int)prognameLen, progname); 187 exit(2); 188 } 189 190 static void 191 MainParseArgDebugFile(const char *arg) 192 { 193 const char *mode; 194 size_t len; 195 char *fname; 196 197 if (opts.debug_file != stdout && opts.debug_file != stderr) 198 fclose(opts.debug_file); 199 200 if (*arg == '+') { 201 arg++; 202 mode = "a"; 203 } else 204 mode = "w"; 205 206 if (strcmp(arg, "stdout") == 0) { 207 opts.debug_file = stdout; 208 return; 209 } 210 if (strcmp(arg, "stderr") == 0) { 211 opts.debug_file = stderr; 212 return; 213 } 214 215 len = strlen(arg); 216 fname = bmake_malloc(len + 20); 217 memcpy(fname, arg, len + 1); 218 219 /* Replace the trailing '%d' after '.%d' with the pid. */ 220 if (len >= 3 && memcmp(fname + len - 3, ".%d", 3) == 0) 221 snprintf(fname + len - 2, 20, "%d", getpid()); 222 223 opts.debug_file = fopen(fname, mode); 224 if (opts.debug_file == NULL) { 225 fprintf(stderr, "Cannot open debug file \"%s\"\n", fname); 226 exit(2); 227 } 228 free(fname); 229 } 230 231 static void 232 MainParseArgDebug(const char *argvalue) 233 { 234 const char *modules; 235 DebugFlags debug = opts.debug; 236 237 for (modules = argvalue; *modules != '\0'; modules++) { 238 switch (*modules) { 239 case '0': /* undocumented, only intended for tests */ 240 memset(&debug, 0, sizeof(debug)); 241 break; 242 case 'A': 243 memset(&debug, ~0, sizeof(debug)); 244 break; 245 case 'a': 246 debug.DEBUG_ARCH = true; 247 break; 248 case 'C': 249 debug.DEBUG_CWD = true; 250 break; 251 case 'c': 252 debug.DEBUG_COND = true; 253 break; 254 case 'd': 255 debug.DEBUG_DIR = true; 256 break; 257 case 'e': 258 debug.DEBUG_ERROR = true; 259 break; 260 case 'f': 261 debug.DEBUG_FOR = true; 262 break; 263 case 'g': 264 if (modules[1] == '1') { 265 debug.DEBUG_GRAPH1 = true; 266 modules++; 267 } else if (modules[1] == '2') { 268 debug.DEBUG_GRAPH2 = true; 269 modules++; 270 } else if (modules[1] == '3') { 271 debug.DEBUG_GRAPH3 = true; 272 modules++; 273 } 274 break; 275 case 'h': 276 debug.DEBUG_HASH = true; 277 break; 278 case 'j': 279 debug.DEBUG_JOB = true; 280 break; 281 case 'L': 282 opts.strict = true; 283 break; 284 case 'l': 285 debug.DEBUG_LOUD = true; 286 break; 287 case 'M': 288 debug.DEBUG_META = true; 289 break; 290 case 'm': 291 debug.DEBUG_MAKE = true; 292 break; 293 case 'n': 294 debug.DEBUG_SCRIPT = true; 295 break; 296 case 'p': 297 debug.DEBUG_PARSE = true; 298 break; 299 case 's': 300 debug.DEBUG_SUFF = true; 301 break; 302 case 't': 303 debug.DEBUG_TARG = true; 304 break; 305 case 'V': 306 opts.debugVflag = true; 307 break; 308 case 'v': 309 debug.DEBUG_VAR = true; 310 break; 311 case 'x': 312 debug.DEBUG_SHELL = true; 313 break; 314 case 'F': 315 MainParseArgDebugFile(modules + 1); 316 goto finish; 317 default: 318 (void)fprintf(stderr, 319 "%s: illegal argument to d option -- %c\n", 320 progname, *modules); 321 usage(); 322 } 323 } 324 325 finish: 326 opts.debug = debug; 327 328 setvbuf(opts.debug_file, NULL, _IONBF, 0); 329 if (opts.debug_file != stdout) 330 setvbuf(stdout, NULL, _IOLBF, 0); 331 } 332 333 /* Is path relative or does it contain any relative component "." or ".."? */ 334 static bool 335 IsRelativePath(const char *path) 336 { 337 const char *p; 338 339 if (path[0] != '/') 340 return true; 341 p = path; 342 while ((p = strstr(p, "/.")) != NULL) { 343 p += 2; 344 if (*p == '.') 345 p++; 346 if (*p == '/' || *p == '\0') 347 return true; 348 } 349 return false; 350 } 351 352 static void 353 MainParseArgChdir(const char *argvalue) 354 { 355 struct stat sa, sb; 356 357 if (chdir(argvalue) == -1) { 358 (void)fprintf(stderr, "%s: chdir %s: %s\n", 359 progname, argvalue, strerror(errno)); 360 exit(2); /* Not 1 so -q can distinguish error */ 361 } 362 if (getcwd(curdir, MAXPATHLEN) == NULL) { 363 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 364 exit(2); 365 } 366 if (!IsRelativePath(argvalue) && 367 stat(argvalue, &sa) != -1 && 368 stat(curdir, &sb) != -1 && 369 sa.st_ino == sb.st_ino && 370 sa.st_dev == sb.st_dev) 371 snprintf(curdir, MAXPATHLEN, "%s", argvalue); 372 ignorePWD = true; 373 } 374 375 static void 376 MainParseArgJobsInternal(const char *argvalue) 377 { 378 char end; 379 if (sscanf(argvalue, "%d,%d%c", 380 &tokenPoolReader, &tokenPoolWriter, &end) != 2) { 381 (void)fprintf(stderr, 382 "%s: error: invalid internal option \"-J %s\"\n", 383 progname, argvalue); 384 exit(2); 385 } 386 if ((fcntl(tokenPoolReader, F_GETFD, 0) < 0) || 387 (fcntl(tokenPoolWriter, F_GETFD, 0) < 0)) { 388 tokenPoolReader = -1; 389 tokenPoolWriter = -1; 390 opts.compatMake = true; 391 } else { 392 Global_Append(MAKEFLAGS, "-J"); 393 Global_Append(MAKEFLAGS, argvalue); 394 } 395 } 396 397 static void 398 MainParseArgJobs(const char *arg) 399 { 400 const char *p; 401 char *end; 402 char v[12]; 403 404 forceJobs = true; 405 opts.maxJobs = (int)strtol(arg, &end, 0); 406 p = end; 407 #ifdef _SC_NPROCESSORS_ONLN 408 if (*p != '\0') { 409 double d; 410 411 if (*p == 'C') 412 d = (opts.maxJobs > 0) ? opts.maxJobs : 1; 413 else if (*p == '.') { 414 d = strtod(arg, &end); 415 p = end; 416 } else 417 d = 0.0; 418 if (d > 0.0) { 419 p = ""; 420 opts.maxJobs = (int)sysconf(_SC_NPROCESSORS_ONLN); 421 opts.maxJobs = (int)(d * (double)opts.maxJobs); 422 } 423 } 424 #endif 425 if (*p != '\0' || opts.maxJobs < 1) { 426 (void)fprintf(stderr, 427 "%s: argument '%s' to option '-j' " 428 "must be a positive number\n", 429 progname, arg); 430 exit(2); /* Not 1 so -q can distinguish error */ 431 } 432 snprintf(v, sizeof(v), "%d", opts.maxJobs); 433 Global_Append(MAKEFLAGS, "-j"); 434 Global_Append(MAKEFLAGS, v); 435 Global_Set(".MAKE.JOBS", v); 436 maxJobTokens = opts.maxJobs; 437 } 438 439 static void 440 MainParseArgSysInc(const char *argvalue) 441 { 442 if (strncmp(argvalue, ".../", 4) == 0) { 443 char *found_path = Dir_FindHereOrAbove(curdir, argvalue + 4); 444 if (found_path == NULL) 445 return; 446 (void)SearchPath_Add(sysIncPath, found_path); 447 free(found_path); 448 } else { 449 (void)SearchPath_Add(sysIncPath, argvalue); 450 } 451 Global_Append(MAKEFLAGS, "-m"); 452 Global_Append(MAKEFLAGS, argvalue); 453 Dir_SetSYSPATH(); 454 } 455 456 static bool 457 MainParseOption(char c, const char *argvalue) 458 { 459 switch (c) { 460 case '\0': 461 break; 462 case 'B': 463 opts.compatMake = true; 464 Global_Append(MAKEFLAGS, "-B"); 465 Global_Set(".MAKE.MODE", "compat"); 466 break; 467 case 'C': 468 MainParseArgChdir(argvalue); 469 break; 470 case 'D': 471 if (argvalue[0] == '\0') 472 return false; 473 Var_SetExpand(SCOPE_GLOBAL, argvalue, "1"); 474 Global_Append(MAKEFLAGS, "-D"); 475 Global_Append(MAKEFLAGS, argvalue); 476 break; 477 case 'I': 478 SearchPath_Add(parseIncPath, argvalue); 479 Global_Append(MAKEFLAGS, "-I"); 480 Global_Append(MAKEFLAGS, argvalue); 481 break; 482 case 'J': 483 MainParseArgJobsInternal(argvalue); 484 break; 485 case 'N': 486 opts.noExecute = true; 487 opts.noRecursiveExecute = true; 488 Global_Append(MAKEFLAGS, "-N"); 489 break; 490 case 'S': 491 opts.keepgoing = false; 492 Global_Append(MAKEFLAGS, "-S"); 493 break; 494 case 'T': 495 tracefile = bmake_strdup(argvalue); 496 Global_Append(MAKEFLAGS, "-T"); 497 Global_Append(MAKEFLAGS, argvalue); 498 break; 499 case 'V': 500 case 'v': 501 opts.printVars = c == 'v' ? PVM_EXPANDED : PVM_UNEXPANDED; 502 Lst_Append(&opts.variables, bmake_strdup(argvalue)); 503 /* XXX: Why always -V? */ 504 Global_Append(MAKEFLAGS, "-V"); 505 Global_Append(MAKEFLAGS, argvalue); 506 break; 507 case 'W': 508 opts.parseWarnFatal = true; 509 /* XXX: why no Global_Append? */ 510 break; 511 case 'X': 512 opts.varNoExportEnv = true; 513 Global_Append(MAKEFLAGS, "-X"); 514 break; 515 case 'd': 516 /* If '-d-opts' don't pass to children */ 517 if (argvalue[0] == '-') 518 argvalue++; 519 else { 520 Global_Append(MAKEFLAGS, "-d"); 521 Global_Append(MAKEFLAGS, argvalue); 522 } 523 MainParseArgDebug(argvalue); 524 break; 525 case 'e': 526 opts.checkEnvFirst = true; 527 Global_Append(MAKEFLAGS, "-e"); 528 break; 529 case 'f': 530 Lst_Append(&opts.makefiles, bmake_strdup(argvalue)); 531 break; 532 case 'i': 533 opts.ignoreErrors = true; 534 Global_Append(MAKEFLAGS, "-i"); 535 break; 536 case 'j': 537 MainParseArgJobs(argvalue); 538 break; 539 case 'k': 540 opts.keepgoing = true; 541 Global_Append(MAKEFLAGS, "-k"); 542 break; 543 case 'm': 544 MainParseArgSysInc(argvalue); 545 /* XXX: why no Var_Append? */ 546 break; 547 case 'n': 548 opts.noExecute = true; 549 Global_Append(MAKEFLAGS, "-n"); 550 break; 551 case 'q': 552 opts.query = true; 553 /* Kind of nonsensical, wot? */ 554 Global_Append(MAKEFLAGS, "-q"); 555 break; 556 case 'r': 557 opts.noBuiltins = true; 558 Global_Append(MAKEFLAGS, "-r"); 559 break; 560 case 's': 561 opts.silent = true; 562 Global_Append(MAKEFLAGS, "-s"); 563 break; 564 case 't': 565 opts.touch = true; 566 Global_Append(MAKEFLAGS, "-t"); 567 break; 568 case 'w': 569 opts.enterFlag = true; 570 Global_Append(MAKEFLAGS, "-w"); 571 break; 572 default: 573 usage(); 574 } 575 return true; 576 } 577 578 /* 579 * Parse the given arguments. Called from main() and from 580 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 581 * 582 * The arguments must be treated as read-only and will be freed after the 583 * call. 584 * 585 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 586 */ 587 static void 588 MainParseArgs(int argc, char **argv) 589 { 590 char c; 591 int arginc; 592 char *argvalue; 593 char *optscan; 594 bool inOption, dashDash = false; 595 596 const char *optspecs = "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w"; 597 /* Can't actually use getopt(3) because rescanning is not portable */ 598 599 rearg: 600 inOption = false; 601 optscan = NULL; 602 while (argc > 1) { 603 const char *optspec; 604 if (!inOption) 605 optscan = argv[1]; 606 c = *optscan++; 607 arginc = 0; 608 if (inOption) { 609 if (c == '\0') { 610 argv++; 611 argc--; 612 inOption = false; 613 continue; 614 } 615 } else { 616 if (c != '-' || dashDash) 617 break; 618 inOption = true; 619 c = *optscan++; 620 } 621 /* '-' found at some earlier point */ 622 optspec = strchr(optspecs, c); 623 if (c != '\0' && optspec != NULL && optspec[1] == ':') { 624 /* 625 * -<something> found, and <something> should have an 626 * argument 627 */ 628 inOption = false; 629 arginc = 1; 630 argvalue = optscan; 631 if (*argvalue == '\0') { 632 if (argc < 3) 633 goto noarg; 634 argvalue = argv[2]; 635 arginc = 2; 636 } 637 } else { 638 argvalue = NULL; 639 } 640 switch (c) { 641 case '\0': 642 arginc = 1; 643 inOption = false; 644 break; 645 case '-': 646 dashDash = true; 647 break; 648 default: 649 if (!MainParseOption(c, argvalue)) 650 goto noarg; 651 } 652 argv += arginc; 653 argc -= arginc; 654 } 655 656 /* 657 * See if the rest of the arguments are variable assignments and 658 * perform them if so. Else take them to be targets and stuff them 659 * on the end of the "create" list. 660 */ 661 for (; argc > 1; argv++, argc--) { 662 if (!Parse_VarAssign(argv[1], false, SCOPE_CMDLINE)) { 663 if (argv[1][0] == '\0') 664 Punt("illegal (null) argument."); 665 if (argv[1][0] == '-' && !dashDash) 666 goto rearg; 667 Lst_Append(&opts.create, bmake_strdup(argv[1])); 668 } 669 } 670 671 return; 672 noarg: 673 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 674 progname, c); 675 usage(); 676 } 677 678 /* 679 * Break a line of arguments into words and parse them. 680 * 681 * Used when a .MFLAGS or .MAKEFLAGS target is encountered during parsing and 682 * by main() when reading the MAKEFLAGS environment variable. 683 */ 684 void 685 Main_ParseArgLine(const char *line) 686 { 687 Words words; 688 char *buf; 689 const char *p; 690 691 if (line == NULL) 692 return; 693 for (p = line; *p == ' '; p++) 694 continue; 695 if (p[0] == '\0') 696 return; 697 698 { 699 FStr argv0 = Var_Value(SCOPE_GLOBAL, ".MAKE"); 700 buf = str_concat3(argv0.str, " ", p); 701 FStr_Done(&argv0); 702 } 703 704 words = Str_Words(buf, true); 705 if (words.words == NULL) { 706 Error("Unterminated quoted string [%s]", buf); 707 free(buf); 708 return; 709 } 710 free(buf); 711 MainParseArgs((int)words.len, words.words); 712 713 Words_Free(words); 714 } 715 716 bool 717 Main_SetObjdir(bool writable, const char *fmt, ...) 718 { 719 struct stat sb; 720 char *path; 721 char buf[MAXPATHLEN + 1]; 722 char buf2[MAXPATHLEN + 1]; 723 va_list ap; 724 725 va_start(ap, fmt); 726 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 727 va_end(ap); 728 729 if (path[0] != '/') { 730 if (snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path) <= MAXPATHLEN) 731 path = buf2; 732 else 733 return false; 734 } 735 736 /* look for the directory and try to chdir there */ 737 if (stat(path, &sb) != 0 || !S_ISDIR(sb.st_mode)) 738 return false; 739 740 if ((writable && access(path, W_OK) != 0) || chdir(path) != 0) { 741 (void)fprintf(stderr, "%s: warning: %s: %s.\n", 742 progname, path, strerror(errno)); 743 /* Allow debugging how we got here - not always obvious */ 744 if (GetBooleanExpr("${MAKE_DEBUG_OBJDIR_CHECK_WRITABLE}", 745 false)) 746 PrintOnError(NULL, ""); 747 return false; 748 } 749 750 snprintf(objdir, sizeof objdir, "%s", path); 751 Global_Set(".OBJDIR", objdir); 752 setenv("PWD", objdir, 1); 753 Dir_InitDot(); 754 purge_relative_cached_realpaths(); 755 if (opts.enterFlag && strcmp(objdir, curdir) != 0) 756 enterFlagObj = true; 757 return true; 758 } 759 760 static bool 761 SetVarObjdir(bool writable, const char *var, const char *suffix) 762 { 763 FStr path = Var_Value(SCOPE_CMDLINE, var); 764 765 if (path.str == NULL || path.str[0] == '\0') { 766 FStr_Done(&path); 767 return false; 768 } 769 770 Var_Expand(&path, SCOPE_GLOBAL, VARE_EVAL); 771 772 (void)Main_SetObjdir(writable, "%s%s", path.str, suffix); 773 774 FStr_Done(&path); 775 return true; 776 } 777 778 /* 779 * Splits str into words (in-place, modifying it), adding them to the list. 780 * The string must be kept alive as long as the list. 781 */ 782 void 783 AppendWords(StringList *lp, char *str) 784 { 785 char *p; 786 const char *sep = " \t"; 787 788 for (p = strtok(str, sep); p != NULL; p = strtok(NULL, sep)) 789 Lst_Append(lp, p); 790 } 791 792 #ifdef SIGINFO 793 static void 794 siginfo(int signo MAKE_ATTR_UNUSED) 795 { 796 char dir[MAXPATHLEN]; 797 char str[2 * MAXPATHLEN]; 798 int len; 799 if (getcwd(dir, sizeof dir) == NULL) 800 return; 801 len = snprintf(str, sizeof str, "%s: Working in: %s\n", progname, dir); 802 if (len > 0) 803 (void)write(STDERR_FILENO, str, (size_t)len); 804 } 805 #endif 806 807 /* Allow makefiles some control over the mode we run in. */ 808 static void 809 MakeMode(void) 810 { 811 char *mode = Var_Subst("${.MAKE.MODE:tl}", SCOPE_GLOBAL, VARE_EVAL); 812 /* TODO: handle errors */ 813 814 if (mode[0] != '\0') { 815 if (strstr(mode, "compat") != NULL) { 816 opts.compatMake = true; 817 forceJobs = false; 818 } 819 #if USE_META 820 if (strstr(mode, "meta") != NULL) 821 meta_mode_init(mode); 822 #endif 823 if (strstr(mode, "randomize-targets") != NULL) 824 opts.randomizeTargets = true; 825 } 826 827 free(mode); 828 } 829 830 static void 831 PrintVariable(const char *varname, bool expandVars) 832 { 833 if (strchr(varname, '$') != NULL) { 834 char *evalue = Var_Subst(varname, SCOPE_GLOBAL, VARE_EVAL); 835 /* TODO: handle errors */ 836 printf("%s\n", evalue); 837 free(evalue); 838 839 } else if (expandVars) { 840 char *expr = str_concat3("${", varname, "}"); 841 char *evalue = Var_Subst(expr, SCOPE_GLOBAL, VARE_EVAL); 842 /* TODO: handle errors */ 843 free(expr); 844 printf("%s\n", evalue); 845 free(evalue); 846 847 } else { 848 FStr value = Var_Value(SCOPE_GLOBAL, varname); 849 printf("%s\n", value.str != NULL ? value.str : ""); 850 FStr_Done(&value); 851 } 852 } 853 854 /* 855 * Return a bool based on a variable. 856 * 857 * If the knob is not set, return the fallback. 858 * If set, anything that looks or smells like "No", "False", "Off", "0", etc. 859 * is false, otherwise true. 860 */ 861 bool 862 GetBooleanExpr(const char *expr, bool fallback) 863 { 864 char *value; 865 bool res; 866 867 value = Var_Subst(expr, SCOPE_GLOBAL, VARE_EVAL); 868 /* TODO: handle errors */ 869 res = ParseBoolean(value, fallback); 870 free(value); 871 return res; 872 } 873 874 static void 875 PrintVariables(void) 876 { 877 StringListNode *ln; 878 bool expandVars; 879 880 if (opts.printVars == PVM_EXPANDED) 881 expandVars = true; 882 else if (opts.debugVflag) 883 expandVars = false; 884 else 885 expandVars = GetBooleanExpr("${.MAKE.EXPAND_VARIABLES}", 886 false); 887 888 for (ln = opts.variables.first; ln != NULL; ln = ln->next) 889 PrintVariable(ln->datum, expandVars); 890 } 891 892 static bool 893 MakeTargets(void) 894 { 895 GNodeList targets = LST_INIT; 896 bool outOfDate; /* false if all targets up to date */ 897 898 if (Lst_IsEmpty(&opts.create)) 899 Parse_MainName(&targets); 900 else 901 Targ_FindList(&targets, &opts.create); 902 903 if (!opts.compatMake) { 904 if (!opts.query) { 905 Job_Init(); 906 jobsRunning = true; 907 } 908 909 outOfDate = Make_MakeParallel(&targets); 910 } else { 911 Compat_MakeAll(&targets); 912 outOfDate = false; 913 } 914 Lst_Done(&targets); /* Don't free the targets themselves. */ 915 return outOfDate; 916 } 917 918 /* 919 * Set up the .TARGETS variable to contain the list of targets to be created. 920 * If none specified, make the variable empty for now, the parser will fill 921 * in the default or .MAIN target later. 922 */ 923 static void 924 InitVarTargets(void) 925 { 926 StringListNode *ln; 927 928 if (Lst_IsEmpty(&opts.create)) { 929 Global_Set(".TARGETS", ""); 930 return; 931 } 932 933 for (ln = opts.create.first; ln != NULL; ln = ln->next) { 934 const char *name = ln->datum; 935 Global_Append(".TARGETS", name); 936 } 937 } 938 939 static void 940 InitRandom(void) 941 { 942 struct timeval tv; 943 944 gettimeofday(&tv, NULL); 945 srandom((unsigned)(tv.tv_sec + tv.tv_usec)); 946 } 947 948 static const char * 949 InitVarMachine(const struct utsname *utsname MAKE_ATTR_UNUSED) 950 { 951 const char *machine = getenv("MACHINE"); 952 if (machine != NULL) 953 return machine; 954 955 #if defined(MAKE_NATIVE) 956 return utsname->machine; 957 #elif defined(MAKE_MACHINE) 958 return MAKE_MACHINE; 959 #else 960 return "unknown"; 961 #endif 962 } 963 964 static const char * 965 InitVarMachineArch(void) 966 { 967 const char *env = getenv("MACHINE_ARCH"); 968 if (env != NULL) 969 return env; 970 971 #ifdef MAKE_NATIVE 972 { 973 struct utsname utsname; 974 static char machine_arch_buf[sizeof utsname.machine]; 975 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 976 size_t len = sizeof machine_arch_buf; 977 978 if (sysctl(mib, (unsigned)__arraycount(mib), 979 machine_arch_buf, &len, NULL, 0) < 0) { 980 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", 981 progname, strerror(errno)); 982 exit(2); 983 } 984 985 return machine_arch_buf; 986 } 987 #elif defined(MACHINE_ARCH) 988 return MACHINE_ARCH; 989 #elif defined(MAKE_MACHINE_ARCH) 990 return MAKE_MACHINE_ARCH; 991 #else 992 return "unknown"; 993 #endif 994 } 995 996 #ifndef NO_PWD_OVERRIDE 997 /* 998 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 999 * since the value of curdir can vary depending on how we got 1000 * here. That is, sitting at a shell prompt (shell that provides $PWD) 1001 * or via subdir.mk, in which case it's likely a shell which does 1002 * not provide it. 1003 * 1004 * So, to stop it breaking this case only, we ignore PWD if 1005 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains an expression. 1006 */ 1007 static void 1008 HandlePWD(const struct stat *curdir_st) 1009 { 1010 char *pwd; 1011 FStr makeobjdir; 1012 struct stat pwd_st; 1013 1014 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1015 return; 1016 1017 if (Var_Exists(SCOPE_CMDLINE, "MAKEOBJDIRPREFIX")) 1018 return; 1019 1020 makeobjdir = Var_Value(SCOPE_CMDLINE, "MAKEOBJDIR"); 1021 if (makeobjdir.str != NULL && strchr(makeobjdir.str, '$') != NULL) 1022 goto ignore_pwd; 1023 1024 if (stat(pwd, &pwd_st) == 0 && 1025 curdir_st->st_ino == pwd_st.st_ino && 1026 curdir_st->st_dev == pwd_st.st_dev) 1027 snprintf(curdir, MAXPATHLEN, "%s", pwd); 1028 1029 ignore_pwd: 1030 FStr_Done(&makeobjdir); 1031 } 1032 #endif 1033 1034 /* 1035 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, MAKEOBJDIR is set 1036 * in the environment, try only that value and fall back to .CURDIR if it 1037 * does not exist. 1038 * 1039 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1040 * and finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none of these 1041 * paths exist, just use .CURDIR. 1042 */ 1043 static void 1044 InitObjdir(const char *machine, const char *machine_arch) 1045 { 1046 bool writable; 1047 1048 Dir_InitCur(curdir); 1049 writable = GetBooleanExpr("${MAKE_OBJDIR_CHECK_WRITABLE}", true); 1050 (void)Main_SetObjdir(false, "%s", curdir); 1051 1052 if (!SetVarObjdir(writable, "MAKEOBJDIRPREFIX", curdir) && 1053 !SetVarObjdir(writable, "MAKEOBJDIR", "") && 1054 !Main_SetObjdir(writable, "%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1055 !Main_SetObjdir(writable, "%s.%s", _PATH_OBJDIR, machine) && 1056 !Main_SetObjdir(writable, "%s", _PATH_OBJDIR)) 1057 (void)Main_SetObjdir(writable, "%s%s", _PATH_OBJDIRPREFIX, curdir); 1058 } 1059 1060 /* get rid of resource limit on file descriptors */ 1061 static void 1062 UnlimitFiles(void) 1063 { 1064 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1065 struct rlimit rl; 1066 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1067 rl.rlim_cur != rl.rlim_max) { 1068 rl.rlim_cur = rl.rlim_max; 1069 (void)setrlimit(RLIMIT_NOFILE, &rl); 1070 } 1071 #endif 1072 } 1073 1074 static void 1075 CmdOpts_Init(void) 1076 { 1077 opts.compatMake = false; 1078 memset(&opts.debug, 0, sizeof(opts.debug)); 1079 /* opts.debug_file has already been initialized earlier */ 1080 opts.strict = false; 1081 opts.debugVflag = false; 1082 opts.checkEnvFirst = false; 1083 Lst_Init(&opts.makefiles); 1084 opts.ignoreErrors = false; /* Pay attention to non-zero returns */ 1085 opts.maxJobs = 1; 1086 opts.keepgoing = false; /* Stop on error */ 1087 opts.noRecursiveExecute = false; /* Execute all .MAKE targets */ 1088 opts.noExecute = false; /* Execute all commands */ 1089 opts.query = false; 1090 opts.noBuiltins = false; /* Read the built-in rules */ 1091 opts.silent = false; /* Print commands as executed */ 1092 opts.touch = false; 1093 opts.printVars = PVM_NONE; 1094 Lst_Init(&opts.variables); 1095 opts.parseWarnFatal = false; 1096 opts.enterFlag = false; 1097 opts.varNoExportEnv = false; 1098 Lst_Init(&opts.create); 1099 } 1100 1101 /* 1102 * Initialize MAKE and .MAKE to the path of the executable, so that it can be 1103 * found by execvp(3) and the shells, even after a chdir. 1104 * 1105 * If it's a relative path and contains a '/', resolve it to an absolute path. 1106 * Otherwise keep it as is, assuming it will be found in the PATH. 1107 */ 1108 static void 1109 InitVarMake(const char *argv0) 1110 { 1111 const char *make = argv0; 1112 char pathbuf[MAXPATHLEN]; 1113 1114 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) { 1115 const char *abspath = cached_realpath(argv0, pathbuf); 1116 struct stat st; 1117 if (abspath != NULL && abspath[0] == '/' && 1118 stat(make, &st) == 0) 1119 make = abspath; 1120 } 1121 1122 Global_Set("MAKE", make); 1123 Global_Set(".MAKE", make); 1124 } 1125 1126 /* 1127 * Add the directories from the colon-separated syspath to defSysIncPath. 1128 * After returning, the contents of syspath is unspecified. 1129 */ 1130 static void 1131 InitDefSysIncPath(char *syspath) 1132 { 1133 static char defsyspath[] = _PATH_DEFSYSPATH; 1134 char *start, *p; 1135 1136 /* 1137 * If no user-supplied system path was given (through the -m option) 1138 * add the directories from the DEFSYSPATH (more than one may be given 1139 * as dir1:...:dirn) to the system include path. 1140 */ 1141 if (syspath == NULL || syspath[0] == '\0') 1142 syspath = defsyspath; 1143 else 1144 syspath = bmake_strdup(syspath); 1145 1146 for (start = syspath; *start != '\0'; start = p) { 1147 for (p = start; *p != '\0' && *p != ':'; p++) 1148 continue; 1149 if (*p == ':') 1150 *p++ = '\0'; 1151 1152 /* look for magic parent directory search string */ 1153 if (strncmp(start, ".../", 4) == 0) { 1154 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1155 if (dir != NULL) { 1156 (void)SearchPath_Add(defSysIncPath, dir); 1157 free(dir); 1158 } 1159 } else { 1160 (void)SearchPath_Add(defSysIncPath, start); 1161 } 1162 } 1163 1164 if (syspath != defsyspath) 1165 free(syspath); 1166 } 1167 1168 static void 1169 ReadBuiltinRules(void) 1170 { 1171 StringListNode *ln; 1172 StringList sysMkFiles = LST_INIT; 1173 1174 SearchPath_Expand( 1175 Lst_IsEmpty(&sysIncPath->dirs) ? defSysIncPath : sysIncPath, 1176 _PATH_DEFSYSMK, 1177 &sysMkFiles); 1178 if (Lst_IsEmpty(&sysMkFiles)) 1179 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK); 1180 1181 for (ln = sysMkFiles.first; ln != NULL; ln = ln->next) 1182 if (ReadMakefile(ln->datum)) 1183 break; 1184 1185 if (ln == NULL) 1186 Fatal("%s: cannot open %s.", 1187 progname, (const char *)sysMkFiles.first->datum); 1188 1189 Lst_DoneFree(&sysMkFiles); 1190 } 1191 1192 static void 1193 InitMaxJobs(void) 1194 { 1195 char *value; 1196 int n; 1197 1198 if (forceJobs || opts.compatMake || 1199 !Var_Exists(SCOPE_GLOBAL, ".MAKE.JOBS")) 1200 return; 1201 1202 value = Var_Subst("${.MAKE.JOBS}", SCOPE_GLOBAL, VARE_EVAL); 1203 /* TODO: handle errors */ 1204 n = (int)strtol(value, NULL, 0); 1205 if (n < 1) { 1206 (void)fprintf(stderr, 1207 "%s: illegal value for .MAKE.JOBS " 1208 "-- must be positive integer!\n", 1209 progname); 1210 exit(2); /* Not 1 so -q can distinguish error */ 1211 } 1212 1213 if (n != opts.maxJobs) { 1214 Global_Append(MAKEFLAGS, "-j"); 1215 Global_Append(MAKEFLAGS, value); 1216 } 1217 1218 opts.maxJobs = n; 1219 maxJobTokens = opts.maxJobs; 1220 forceJobs = true; 1221 free(value); 1222 } 1223 1224 /* 1225 * For compatibility, look at the directories in the VPATH variable 1226 * and add them to the search path, if the variable is defined. The 1227 * variable's value is in the same format as the PATH environment 1228 * variable, i.e. <directory>:<directory>:<directory>... 1229 */ 1230 static void 1231 InitVpath(void) 1232 { 1233 char *vpath, savec, *path; 1234 if (!Var_Exists(SCOPE_CMDLINE, "VPATH")) 1235 return; 1236 1237 vpath = Var_Subst("${VPATH}", SCOPE_CMDLINE, VARE_EVAL); 1238 /* TODO: handle errors */ 1239 path = vpath; 1240 do { 1241 char *p; 1242 /* skip to end of directory */ 1243 for (p = path; *p != ':' && *p != '\0'; p++) 1244 continue; 1245 /* Save terminator character so know when to stop */ 1246 savec = *p; 1247 *p = '\0'; 1248 /* Add directory to search path */ 1249 (void)SearchPath_Add(&dirSearchPath, path); 1250 *p = savec; 1251 path = p + 1; 1252 } while (savec == ':'); 1253 free(vpath); 1254 } 1255 1256 static void 1257 ReadAllMakefiles(const StringList *makefiles) 1258 { 1259 StringListNode *ln; 1260 1261 for (ln = makefiles->first; ln != NULL; ln = ln->next) { 1262 const char *fname = ln->datum; 1263 if (!ReadMakefile(fname)) 1264 Fatal("%s: cannot open %s.", progname, fname); 1265 } 1266 } 1267 1268 static void 1269 ReadFirstDefaultMakefile(void) 1270 { 1271 StringList makefiles = LST_INIT; 1272 StringListNode *ln; 1273 char *prefs = Var_Subst("${.MAKE.MAKEFILE_PREFERENCE}", 1274 SCOPE_CMDLINE, VARE_EVAL); 1275 /* TODO: handle errors */ 1276 1277 AppendWords(&makefiles, prefs); 1278 1279 for (ln = makefiles.first; ln != NULL; ln = ln->next) 1280 if (ReadMakefile(ln->datum)) 1281 break; 1282 1283 Lst_Done(&makefiles); 1284 free(prefs); 1285 } 1286 1287 /* 1288 * Initialize variables such as MAKE, MACHINE, .MAKEFLAGS. 1289 * Initialize a few modules. 1290 * Parse the arguments from MAKEFLAGS and the command line. 1291 */ 1292 static void 1293 main_Init(int argc, char **argv) 1294 { 1295 struct stat sa; 1296 const char *machine; 1297 const char *machine_arch; 1298 char *syspath = getenv("MAKESYSPATH"); 1299 struct utsname utsname; 1300 1301 /* default to writing debug to stderr */ 1302 opts.debug_file = stderr; 1303 1304 Str_Intern_Init(); 1305 HashTable_Init(&cached_realpaths); 1306 1307 #ifdef SIGINFO 1308 (void)bmake_signal(SIGINFO, siginfo); 1309 #endif 1310 1311 InitRandom(); 1312 1313 progname = str_basename(argv[0]); 1314 1315 UnlimitFiles(); 1316 1317 if (uname(&utsname) == -1) { 1318 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1319 strerror(errno)); 1320 exit(2); 1321 } 1322 1323 machine = InitVarMachine(&utsname); 1324 machine_arch = InitVarMachineArch(); 1325 1326 myPid = getpid(); 1327 1328 /* Just in case MAKEOBJDIR wants us to do something tricky. */ 1329 Targ_Init(); 1330 Global_Set_ReadOnly(".MAKE.OS", utsname.sysname); 1331 Global_Set("MACHINE", machine); 1332 Global_Set("MACHINE_ARCH", machine_arch); 1333 #ifdef MAKE_VERSION 1334 Global_Set("MAKE_VERSION", MAKE_VERSION); 1335 #endif 1336 Global_Set_ReadOnly(".newline", "\n"); 1337 #ifndef MAKEFILE_PREFERENCE_LIST 1338 /* This is the traditional preference for makefiles. */ 1339 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1340 #endif 1341 Global_Set(".MAKE.MAKEFILE_PREFERENCE", MAKEFILE_PREFERENCE_LIST); 1342 Global_Set(".MAKE.DEPENDFILE", ".depend"); 1343 /* Tell makefiles like jobs.mk whether we support -jC */ 1344 #ifdef _SC_NPROCESSORS_ONLN 1345 Global_Set_ReadOnly(".MAKE.JOBS.C", "yes"); 1346 #else 1347 Global_Set_ReadOnly(".MAKE.JOBS.C", "no"); 1348 #endif 1349 1350 CmdOpts_Init(); 1351 allPrecious = false; /* Remove targets when interrupted */ 1352 deleteOnError = false; /* Historical default behavior */ 1353 jobsRunning = false; 1354 1355 maxJobTokens = opts.maxJobs; 1356 ignorePWD = false; 1357 1358 /* 1359 * Initialize the parsing, directory and variable modules to prepare 1360 * for the reading of inclusion paths and variable settings on the 1361 * command line 1362 */ 1363 1364 /* 1365 * Initialize various variables. 1366 * MAKE also gets this name, for compatibility 1367 * .MAKEFLAGS gets set to the empty string just in case. 1368 * MFLAGS also gets initialized empty, for compatibility. 1369 */ 1370 Parse_Init(); 1371 InitVarMake(argv[0]); 1372 Global_Set(MAKEFLAGS, ""); 1373 Global_Set(".MAKEOVERRIDES", ""); 1374 Global_Set("MFLAGS", ""); 1375 Global_Set(".ALLTARGETS", ""); 1376 Global_Set_ReadOnly(".MAKE.LEVEL.ENV", MAKE_LEVEL_ENV); 1377 1378 /* Set some other useful variables. */ 1379 { 1380 char buf[64]; 1381 const char *ep = getenv(MAKE_LEVEL_ENV); 1382 1383 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0; 1384 if (makelevel < 0) 1385 makelevel = 0; 1386 snprintf(buf, sizeof buf, "%d", makelevel); 1387 Global_Set(".MAKE.LEVEL", buf); 1388 snprintf(buf, sizeof buf, "%u", myPid); 1389 Global_Set_ReadOnly(".MAKE.PID", buf); 1390 snprintf(buf, sizeof buf, "%u", getppid()); 1391 Global_Set_ReadOnly(".MAKE.PPID", buf); 1392 snprintf(buf, sizeof buf, "%u", getuid()); 1393 Global_Set_ReadOnly(".MAKE.UID", buf); 1394 snprintf(buf, sizeof buf, "%u", getgid()); 1395 Global_Set_ReadOnly(".MAKE.GID", buf); 1396 } 1397 if (makelevel > 0) { 1398 char pn[1024]; 1399 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel); 1400 progname = bmake_strdup(pn); 1401 } 1402 1403 #ifdef USE_META 1404 meta_init(); 1405 #endif 1406 Dir_Init(); 1407 1408 { 1409 char *makeflags = explode(getenv("MAKEFLAGS")); 1410 Main_ParseArgLine(makeflags); 1411 free(makeflags); 1412 } 1413 1414 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1415 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1416 progname, strerror(errno)); 1417 exit(2); 1418 } 1419 1420 MainParseArgs(argc, argv); 1421 1422 if (opts.enterFlag) 1423 printf("%s: Entering directory `%s'\n", progname, curdir); 1424 1425 if (stat(curdir, &sa) == -1) { 1426 (void)fprintf(stderr, "%s: %s: %s.\n", 1427 progname, curdir, strerror(errno)); 1428 exit(2); 1429 } 1430 1431 #ifndef NO_PWD_OVERRIDE 1432 HandlePWD(&sa); 1433 #endif 1434 Global_Set(".CURDIR", curdir); 1435 1436 InitObjdir(machine, machine_arch); 1437 1438 Arch_Init(); 1439 Suff_Init(); 1440 Trace_Init(tracefile); 1441 1442 defaultNode = NULL; 1443 (void)time(&now); 1444 1445 Trace_Log(MAKESTART, NULL); 1446 1447 InitVarTargets(); 1448 1449 InitDefSysIncPath(syspath); 1450 } 1451 1452 /* 1453 * Read the system makefile followed by either makefile, Makefile or the 1454 * files given by the -f option. Exit on parse errors. 1455 */ 1456 static void 1457 main_ReadFiles(void) 1458 { 1459 1460 if (Lst_IsEmpty(&sysIncPath->dirs)) 1461 SearchPath_AddAll(sysIncPath, defSysIncPath); 1462 1463 Dir_SetSYSPATH(); 1464 if (!opts.noBuiltins) 1465 ReadBuiltinRules(); 1466 1467 posix_state = PS_MAYBE_NEXT_LINE; 1468 if (!Lst_IsEmpty(&opts.makefiles)) 1469 ReadAllMakefiles(&opts.makefiles); 1470 else 1471 ReadFirstDefaultMakefile(); 1472 } 1473 1474 /* Compute the dependency graph. */ 1475 static void 1476 main_PrepareMaking(void) 1477 { 1478 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1479 if (!opts.noBuiltins || opts.printVars == PVM_NONE) { 1480 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE}", 1481 SCOPE_CMDLINE, VARE_EVAL); 1482 if (makeDependfile[0] != '\0') { 1483 /* TODO: handle errors */ 1484 doing_depend = true; 1485 (void)ReadMakefile(makeDependfile); 1486 doing_depend = false; 1487 } 1488 } 1489 1490 if (enterFlagObj) 1491 printf("%s: Entering directory `%s'\n", progname, objdir); 1492 1493 MakeMode(); 1494 1495 { 1496 FStr makeflags = Var_Value(SCOPE_GLOBAL, MAKEFLAGS); 1497 Global_Append("MFLAGS", makeflags.str); 1498 FStr_Done(&makeflags); 1499 } 1500 1501 InitMaxJobs(); 1502 1503 if (!opts.compatMake && !forceJobs) 1504 opts.compatMake = true; 1505 1506 if (!opts.compatMake) 1507 TokenPool_Init(maxJobTokens, tokenPoolReader, tokenPoolWriter); 1508 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1509 tokenPoolReader, tokenPoolWriter, opts.maxJobs, maxJobTokens, 1510 opts.compatMake ? 1 : 0); 1511 1512 if (opts.printVars == PVM_NONE) 1513 Main_ExportMAKEFLAGS(true); /* initial export */ 1514 1515 InitVpath(); 1516 1517 /* 1518 * Now that all search paths have been read for suffixes et al, it's 1519 * time to add the default search path to their lists... 1520 */ 1521 Suff_ExtendPaths(); 1522 1523 /* 1524 * Propagate attributes through :: dependency lists. 1525 */ 1526 Targ_Propagate(); 1527 1528 /* print the initial graph, if the user requested it */ 1529 if (DEBUG(GRAPH1)) 1530 Targ_PrintGraph(1); 1531 } 1532 1533 /* 1534 * Make the targets, or print variables. 1535 * Return whether any of the targets is out-of-date. 1536 */ 1537 static bool 1538 main_Run(void) 1539 { 1540 if (opts.printVars != PVM_NONE) { 1541 PrintVariables(); 1542 return false; 1543 } else 1544 return MakeTargets(); 1545 } 1546 1547 /* Clean up after making the targets. */ 1548 static void 1549 main_CleanUp(void) 1550 { 1551 #ifdef CLEANUP 1552 Lst_DoneFree(&opts.variables); 1553 Lst_DoneFree(&opts.makefiles); 1554 Lst_DoneFree(&opts.create); 1555 #endif 1556 1557 if (DEBUG(GRAPH2)) 1558 Targ_PrintGraph(2); 1559 1560 Trace_Log(MAKEEND, NULL); 1561 1562 if (enterFlagObj) 1563 printf("%s: Leaving directory `%s'\n", progname, objdir); 1564 if (opts.enterFlag) 1565 printf("%s: Leaving directory `%s'\n", progname, curdir); 1566 1567 Var_Stats(); 1568 Targ_Stats(); 1569 1570 #ifdef USE_META 1571 meta_finish(); 1572 #endif 1573 #ifdef CLEANUP 1574 Suff_End(); 1575 Targ_End(); 1576 Arch_End(); 1577 Parse_End(); 1578 Dir_End(); 1579 Job_End(); 1580 #endif 1581 Trace_End(); 1582 #ifdef CLEANUP 1583 Str_Intern_End(); 1584 #endif 1585 } 1586 1587 static int 1588 main_ExitCode(bool outOfDate) 1589 { 1590 if ((opts.strict && main_errors > 0) || parseErrors > 0) 1591 return 2; /* Not 1 so -q can distinguish error */ 1592 return outOfDate ? 1 : 0; 1593 } 1594 1595 int 1596 main(int argc, char **argv) 1597 { 1598 bool outOfDate; 1599 1600 main_Init(argc, argv); 1601 main_ReadFiles(); 1602 main_PrepareMaking(); 1603 outOfDate = main_Run(); 1604 main_CleanUp(); 1605 return main_ExitCode(outOfDate); 1606 } 1607 1608 /* 1609 * Open and parse the given makefile, with all its side effects. 1610 * Return false if the file could not be opened. 1611 */ 1612 static bool 1613 ReadMakefile(const char *fname) 1614 { 1615 int fd; 1616 char *name, *path = NULL; 1617 1618 if (strcmp(fname, "-") == 0) { 1619 Parse_File("(stdin)", -1); 1620 Var_Set(SCOPE_INTERNAL, "MAKEFILE", ""); 1621 } else { 1622 if (strncmp(fname, ".../", 4) == 0) { 1623 name = Dir_FindHereOrAbove(curdir, fname + 4); 1624 if (name != NULL) { 1625 /* Dir_FindHereOrAbove returns dirname */ 1626 path = str_concat3(name, "/", 1627 str_basename(fname)); 1628 free(name); 1629 fd = open(path, O_RDONLY); 1630 if (fd != -1) { 1631 fname = path; 1632 goto found; 1633 } 1634 } 1635 } 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 /* populate av for Cmd_Exec and Compat_RunCommand */ 1686 int 1687 Cmd_Argv(const char *cmd, size_t cmd_len, const char **av, size_t avsz, 1688 char *cmd_file, size_t cmd_filesz, bool eflag, bool xflag) 1689 { 1690 int ac = 0; 1691 int cmd_fd = -1; 1692 1693 if (shellPath == NULL) 1694 Shell_Init(); 1695 1696 if (cmd_file != NULL) { 1697 if (cmd_len == 0) 1698 cmd_len = strlen(cmd); 1699 1700 if (cmd_len > MAKE_CMDLEN_LIMIT) { 1701 cmd_fd = mkTempFile(NULL, cmd_file, cmd_filesz); 1702 if (cmd_fd >= 0) { 1703 ssize_t n; 1704 1705 n = write(cmd_fd, cmd, cmd_len); 1706 close(cmd_fd); 1707 if (n < (ssize_t)cmd_len) { 1708 unlink(cmd_file); 1709 cmd_fd = -1; 1710 } 1711 } 1712 } else 1713 cmd_file[0] = '\0'; 1714 } 1715 1716 if (avsz < 4 || (eflag && avsz < 5)) 1717 return -1; 1718 1719 /* The following works for any of the builtin shell specs. */ 1720 av[ac++] = shellPath; 1721 if (eflag) 1722 av[ac++] = shellErrFlag; 1723 if (cmd_fd >= 0) { 1724 if (xflag) 1725 av[ac++] = "-x"; 1726 av[ac++] = cmd_file; 1727 } else { 1728 av[ac++] = xflag ? "-xc" : "-c"; 1729 av[ac++] = cmd; 1730 } 1731 av[ac] = NULL; 1732 return ac; 1733 } 1734 1735 /* 1736 * Execute the command in cmd, and return its output (only stdout, not 1737 * stderr, possibly empty). In the output, replace newlines with spaces. 1738 */ 1739 char * 1740 Cmd_Exec(const char *cmd, char **error) 1741 { 1742 const char *args[4]; /* Arguments for invoking the shell */ 1743 int pipefds[2]; 1744 int cpid; /* Child PID */ 1745 int pid; /* PID from wait() */ 1746 int status; /* command exit status */ 1747 Buffer buf; /* buffer to store the result */ 1748 ssize_t bytes_read; 1749 char *output; 1750 char *p; 1751 int saved_errno; 1752 char cmd_file[MAXPATHLEN]; 1753 1754 DEBUG1(VAR, "Capturing the output of command \"%s\"\n", cmd); 1755 1756 if (Cmd_Argv(cmd, 0, args, 4, cmd_file, sizeof(cmd_file), false, false) < 0 1757 || pipe(pipefds) == -1) { 1758 *error = str_concat3( 1759 "Couldn't create pipe for \"", cmd, "\""); 1760 return bmake_strdup(""); 1761 } 1762 1763 Var_ReexportVars(SCOPE_GLOBAL); 1764 1765 switch (cpid = FORK_FUNCTION()) { 1766 case 0: 1767 (void)close(pipefds[0]); 1768 (void)dup2(pipefds[1], STDOUT_FILENO); 1769 (void)close(pipefds[1]); 1770 1771 (void)execv(shellPath, UNCONST(args)); 1772 _exit(1); 1773 /* NOTREACHED */ 1774 1775 case -1: 1776 *error = str_concat3("Couldn't exec \"", cmd, "\""); 1777 return bmake_strdup(""); 1778 } 1779 1780 (void)close(pipefds[1]); /* No need for the writing half */ 1781 1782 saved_errno = 0; 1783 Buf_Init(&buf); 1784 1785 do { 1786 char result[BUFSIZ]; 1787 bytes_read = read(pipefds[0], result, sizeof result); 1788 if (bytes_read > 0) 1789 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1790 } while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1791 if (bytes_read == -1) 1792 saved_errno = errno; 1793 1794 (void)close(pipefds[0]); /* Close the input side of the pipe. */ 1795 1796 while ((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0) 1797 JobReapChild(pid, status, false); 1798 1799 if (Buf_EndsWith(&buf, '\n')) 1800 buf.data[buf.len - 1] = '\0'; 1801 1802 output = Buf_DoneData(&buf); 1803 for (p = output; *p != '\0'; p++) 1804 if (*p == '\n') 1805 *p = ' '; 1806 1807 if (WIFSIGNALED(status)) 1808 *error = str_concat3("\"", cmd, "\" exited on a signal"); 1809 else if (WEXITSTATUS(status) != 0) { 1810 Buffer errBuf; 1811 Buf_Init(&errBuf); 1812 Buf_AddStr(&errBuf, "Command \""); 1813 Buf_AddStr(&errBuf, cmd); 1814 Buf_AddStr(&errBuf, "\" exited with status "); 1815 Buf_AddInt(&errBuf, WEXITSTATUS(status)); 1816 *error = Buf_DoneData(&errBuf); 1817 } else if (saved_errno != 0) 1818 *error = str_concat3( 1819 "Couldn't read shell's output for \"", cmd, "\""); 1820 else 1821 *error = NULL; 1822 if (cmd_file[0] != '\0') 1823 unlink(cmd_file); 1824 return output; 1825 } 1826 1827 /* 1828 * Print a printf-style error message. 1829 * 1830 * In default mode, this error message has no consequences, for compatibility 1831 * reasons, in particular it does not affect the exit status. Only in lint 1832 * mode (-dL) it does. 1833 */ 1834 void 1835 Error(const char *fmt, ...) 1836 { 1837 va_list ap; 1838 FILE *f; 1839 1840 f = opts.debug_file; 1841 if (f == stdout) 1842 f = stderr; 1843 (void)fflush(stdout); 1844 1845 for (;;) { 1846 fprintf(f, "%s: ", progname); 1847 va_start(ap, fmt); 1848 (void)vfprintf(f, fmt, ap); 1849 va_end(ap); 1850 (void)fprintf(f, "\n"); 1851 (void)fflush(f); 1852 if (f == stderr) 1853 break; 1854 f = stderr; 1855 } 1856 main_errors++; 1857 } 1858 1859 /* 1860 * Wait for any running jobs to finish, then produce an error message, 1861 * finally exit immediately. 1862 * 1863 * Exiting immediately differs from Parse_Error, which exits only after the 1864 * current top-level makefile has been parsed completely. 1865 */ 1866 void 1867 Fatal(const char *fmt, ...) 1868 { 1869 va_list ap; 1870 1871 if (jobsRunning) 1872 Job_Wait(); 1873 1874 (void)fflush(stdout); 1875 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 PrintStackTrace(true); 1882 1883 PrintOnError(NULL, "\n"); 1884 1885 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1886 Targ_PrintGraph(2); 1887 Trace_Log(MAKEERROR, NULL); 1888 exit(2); /* Not 1 so -q can distinguish error */ 1889 } 1890 1891 /* 1892 * Major exception once jobs are being created. 1893 * Kills all jobs, prints a message and exits. 1894 */ 1895 void 1896 Punt(const char *fmt, ...) 1897 { 1898 va_list ap; 1899 1900 (void)fflush(stdout); 1901 (void)fprintf(stderr, "%s: ", progname); 1902 va_start(ap, fmt); 1903 (void)vfprintf(stderr, fmt, ap); 1904 va_end(ap); 1905 (void)fprintf(stderr, "\n"); 1906 (void)fflush(stderr); 1907 1908 PrintOnError(NULL, "\n"); 1909 1910 DieHorribly(); 1911 } 1912 1913 /* Exit without giving a message. */ 1914 void 1915 DieHorribly(void) 1916 { 1917 if (jobsRunning) 1918 Job_AbortAll(); 1919 if (DEBUG(GRAPH2)) 1920 Targ_PrintGraph(2); 1921 Trace_Log(MAKEERROR, NULL); 1922 exit(2); /* Not 1 so -q can distinguish error */ 1923 } 1924 1925 int 1926 unlink_file(const char *file) 1927 { 1928 struct stat st; 1929 1930 if (lstat(file, &st) == -1) 1931 return -1; 1932 1933 if (S_ISDIR(st.st_mode)) { 1934 /* 1935 * POSIX says for unlink: "The path argument shall not name 1936 * a directory unless [...]". 1937 */ 1938 errno = EISDIR; 1939 return -1; 1940 } 1941 return unlink(file); 1942 } 1943 1944 static void 1945 write_all(int fd, const void *data, size_t n) 1946 { 1947 const char *mem = data; 1948 1949 while (n > 0) { 1950 ssize_t written = write(fd, mem, n); 1951 /* XXX: Should this EAGAIN be EINTR? */ 1952 if (written == -1 && errno == EAGAIN) 1953 continue; 1954 if (written == -1) 1955 break; 1956 mem += written; 1957 n -= (size_t)written; 1958 } 1959 } 1960 1961 /* Print why exec failed, avoiding stdio. */ 1962 void MAKE_ATTR_DEAD 1963 execDie(const char *func, const char *arg) 1964 { 1965 char msg[1024]; 1966 int len; 1967 1968 len = snprintf(msg, sizeof(msg), "%s: %s(%s) failed (%s)\n", 1969 progname, func, arg, strerror(errno)); 1970 write_all(STDERR_FILENO, msg, (size_t)len); 1971 _exit(1); 1972 } 1973 1974 static void 1975 purge_relative_cached_realpaths(void) 1976 { 1977 HashIter hi; 1978 bool more; 1979 1980 HashIter_Init(&hi, &cached_realpaths); 1981 more = HashIter_Next(&hi); 1982 while (more) { 1983 HashEntry *he = hi.entry; 1984 more = HashIter_Next(&hi); 1985 if (he->key[0] != '/') { 1986 DEBUG1(DIR, "cached_realpath: purging %s\n", he->key); 1987 free(he->value); 1988 HashTable_DeleteEntry(&cached_realpaths, he); 1989 } 1990 } 1991 } 1992 1993 const char * 1994 cached_realpath(const char *pathname, char *resolved) 1995 { 1996 const char *rp; 1997 1998 if (pathname == NULL || pathname[0] == '\0') 1999 return NULL; 2000 2001 rp = HashTable_FindValue(&cached_realpaths, pathname); 2002 if (rp != NULL) { 2003 snprintf(resolved, MAXPATHLEN, "%s", rp); 2004 return resolved; 2005 } 2006 2007 rp = realpath(pathname, resolved); 2008 if (rp != NULL) { 2009 HashTable_Set(&cached_realpaths, pathname, bmake_strdup(rp)); 2010 DEBUG2(DIR, "cached_realpath: %s -> %s\n", pathname, rp); 2011 return resolved; 2012 } 2013 2014 /* should we negative-cache? */ 2015 return NULL; 2016 } 2017 2018 /* 2019 * Return true if we should die without noise. 2020 * For example our failing child was a sub-make or failure happened elsewhere. 2021 */ 2022 bool 2023 shouldDieQuietly(GNode *gn, int bf) 2024 { 2025 static int quietly = -1; 2026 2027 if (quietly < 0) { 2028 if (DEBUG(JOB) || 2029 !GetBooleanExpr("${.MAKE.DIE_QUIETLY}", true)) 2030 quietly = 0; 2031 else if (bf >= 0) 2032 quietly = bf; 2033 else 2034 quietly = (gn != NULL && (gn->type & OP_MAKE)) ? 1 : 0; 2035 } 2036 return quietly != 0; 2037 } 2038 2039 static void 2040 SetErrorVars(GNode *gn) 2041 { 2042 StringListNode *ln; 2043 char sts[16]; 2044 2045 /* 2046 * We can print this even if there is no .ERROR target. 2047 */ 2048 snprintf(sts, sizeof(sts), "%d", gn->exit_status); 2049 Global_Set(".ERROR_EXIT", sts); 2050 Global_Set(".ERROR_TARGET", gn->name); 2051 Global_Delete(".ERROR_CMD"); 2052 2053 for (ln = gn->commands.first; ln != NULL; ln = ln->next) { 2054 const char *cmd = ln->datum; 2055 2056 if (cmd == NULL) 2057 break; 2058 Global_Append(".ERROR_CMD", cmd); 2059 } 2060 } 2061 2062 /* 2063 * Print some helpful information in case of an error. 2064 * The caller should exit soon after calling this function. 2065 */ 2066 void 2067 PrintOnError(GNode *gn, const char *msg) 2068 { 2069 static GNode *errorNode = NULL; 2070 StringListNode *ln; 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", msg, progname); 2081 ln = opts.create.first; 2082 if (ln != NULL || mainNode != NULL) { 2083 printf(" making \""); 2084 if (ln != NULL) { 2085 printf("%s", (const char *)ln->datum); 2086 for (ln = ln->next; ln != NULL; ln = ln->next) 2087 printf(" %s", (const char *)ln->datum); 2088 } else 2089 printf("%s", mainNode->name); 2090 printf("\""); 2091 } 2092 printf(" in %s\n", curdir); 2093 2094 /* we generally want to keep quiet if a sub-make died */ 2095 if (shouldDieQuietly(gn, -1)) 2096 return; 2097 2098 if (gn != NULL) 2099 SetErrorVars(gn); 2100 2101 { 2102 char *errorVarsValues; 2103 enum PosixState p_s = posix_state; 2104 2105 posix_state = PS_TOO_LATE; 2106 errorVarsValues = Var_Subst( 2107 "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2108 SCOPE_GLOBAL, VARE_EVAL); 2109 /* TODO: handle errors */ 2110 printf("%s", errorVarsValues); 2111 free(errorVarsValues); 2112 posix_state = p_s; 2113 } 2114 2115 fflush(stdout); 2116 2117 /* 2118 * Finally, see if there is a .ERROR target, and run it if so. 2119 */ 2120 errorNode = Targ_FindNode(".ERROR"); 2121 if (errorNode != NULL) { 2122 errorNode->type |= OP_SPECIAL; 2123 Compat_Make(errorNode, errorNode); 2124 } 2125 } 2126 2127 void 2128 Main_ExportMAKEFLAGS(bool first) 2129 { 2130 static bool once = true; 2131 enum PosixState p_s; 2132 char *flags; 2133 2134 if (once != first) 2135 return; 2136 once = false; 2137 2138 p_s = posix_state; 2139 posix_state = PS_TOO_LATE; 2140 flags = Var_Subst( 2141 "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 2142 SCOPE_CMDLINE, VARE_EVAL); 2143 /* TODO: handle errors */ 2144 if (flags[0] != '\0') 2145 setenv("MAKEFLAGS", flags, 1); 2146 free(flags); 2147 posix_state = p_s; 2148 } 2149 2150 char * 2151 getTmpdir(void) 2152 { 2153 static char *tmpdir = NULL; 2154 struct stat st; 2155 2156 if (tmpdir != NULL) 2157 return tmpdir; 2158 2159 /* Honor $TMPDIR if it is valid, strip a trailing '/'. */ 2160 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP ":S,/$,,W}/", 2161 SCOPE_GLOBAL, VARE_EVAL); 2162 /* TODO: handle errors */ 2163 2164 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2165 free(tmpdir); 2166 tmpdir = bmake_strdup(_PATH_TMP); 2167 } 2168 return tmpdir; 2169 } 2170 2171 /* 2172 * Create and open a temp file using "pattern". 2173 * If tfile is provided, set it to a copy of the filename created. 2174 * Otherwise unlink the file once open. 2175 */ 2176 int 2177 mkTempFile(const char *pattern, char *tfile, size_t tfile_sz) 2178 { 2179 static char *tmpdir = NULL; 2180 char tbuf[MAXPATHLEN]; 2181 int fd; 2182 2183 if (pattern == NULL) 2184 pattern = "makeXXXXXX"; 2185 if (tmpdir == NULL) 2186 tmpdir = getTmpdir(); 2187 if (tfile == NULL) { 2188 tfile = tbuf; 2189 tfile_sz = sizeof tbuf; 2190 } 2191 2192 if (pattern[0] == '/') 2193 snprintf(tfile, tfile_sz, "%s", pattern); 2194 else 2195 snprintf(tfile, tfile_sz, "%s%s", tmpdir, pattern); 2196 2197 if ((fd = mkstemp(tfile)) < 0) 2198 Punt("Could not create temporary file %s: %s", tfile, 2199 strerror(errno)); 2200 if (tfile == tbuf) 2201 unlink(tfile); /* we just want the descriptor */ 2202 2203 return fd; 2204 } 2205 2206 /* 2207 * Convert a string representation of a boolean into a boolean value. 2208 * Anything that looks like "No", "False", "Off", "0" etc. is false, 2209 * the empty string is the fallback, everything else is true. 2210 */ 2211 bool 2212 ParseBoolean(const char *s, bool fallback) 2213 { 2214 char ch = ch_tolower(s[0]); 2215 if (ch == '\0') 2216 return fallback; 2217 if (ch == '0' || ch == 'f' || ch == 'n') 2218 return false; 2219 if (ch == 'o') 2220 return ch_tolower(s[1]) != 'f'; 2221 return true; 2222 } 2223
Indexes created Tue Sep 23 07:09:52 GMT 2025