main.c revision 1.546
1 /* $NetBSD: main.c,v 1.546 2021/12/15 12:24:13 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 * 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 1.546 2021/12/15 12:24:13 rillig Exp $"); 115 #if defined(MAKE_NATIVE) && !defined(lint) 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 line by itself */ 125 bool deleteOnError; /* .DELETE_ON_ERROR: set */ 126 127 static int maxJobTokens; /* -j argument */ 128 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 int 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 size_t len; 157 char *nf, *st; 158 const char *f; 159 160 if (flags == NULL) 161 return NULL; 162 163 for (f = flags; *f != '\0'; f++) 164 if (!ch_isalpha(*f)) 165 break; 166 167 if (*f != '\0') 168 return bmake_strdup(flags); 169 170 len = strlen(flags); 171 st = nf = bmake_malloc(len * 3 + 1); 172 while (*flags != '\0') { 173 *nf++ = '-'; 174 *nf++ = *flags++; 175 *nf++ = ' '; 176 } 177 *nf = '\0'; 178 return st; 179 } 180 181 /* 182 * usage -- 183 * exit with usage message 184 */ 185 MAKE_ATTR_DEAD static void 186 usage(void) 187 { 188 size_t prognameLen = strcspn(progname, "["); 189 190 (void)fprintf(stderr, 191 "usage: %.*s [-BeikNnqrSstWwX]\n" 192 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 193 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 194 " [-V variable] [-v variable] [variable=value] [target ...]\n", 195 (int)prognameLen, progname); 196 exit(2); 197 } 198 199 static void 200 MainParseArgDebugFile(const char *arg) 201 { 202 const char *mode; 203 size_t len; 204 char *fname; 205 206 if (opts.debug_file != stdout && opts.debug_file != stderr) 207 fclose(opts.debug_file); 208 209 if (*arg == '+') { 210 arg++; 211 mode = "a"; 212 } else 213 mode = "w"; 214 215 if (strcmp(arg, "stdout") == 0) { 216 opts.debug_file = stdout; 217 return; 218 } 219 if (strcmp(arg, "stderr") == 0) { 220 opts.debug_file = stderr; 221 return; 222 } 223 224 len = strlen(arg); 225 fname = bmake_malloc(len + 20); 226 memcpy(fname, arg, len + 1); 227 228 /* Let the filename be modified by the pid */ 229 if (strcmp(fname + len - 3, ".%d") == 0) 230 snprintf(fname + len - 2, 20, "%d", getpid()); 231 232 opts.debug_file = fopen(fname, mode); 233 if (opts.debug_file == NULL) { 234 fprintf(stderr, "Cannot open debug file %s\n", 235 fname); 236 usage(); 237 } 238 free(fname); 239 } 240 241 static void 242 MainParseArgDebug(const char *argvalue) 243 { 244 const char *modules; 245 DebugFlags debug = opts.debug; 246 247 for (modules = argvalue; *modules != '\0'; modules++) { 248 switch (*modules) { 249 case '0': /* undocumented, only intended for tests */ 250 memset(&debug, 0, sizeof(debug)); 251 break; 252 case 'A': 253 memset(&debug, ~0, sizeof(debug)); 254 break; 255 case 'a': 256 debug.DEBUG_ARCH = true; 257 break; 258 case 'C': 259 debug.DEBUG_CWD = true; 260 break; 261 case 'c': 262 debug.DEBUG_COND = true; 263 break; 264 case 'd': 265 debug.DEBUG_DIR = true; 266 break; 267 case 'e': 268 debug.DEBUG_ERROR = true; 269 break; 270 case 'f': 271 debug.DEBUG_FOR = true; 272 break; 273 case 'g': 274 if (modules[1] == '1') { 275 debug.DEBUG_GRAPH1 = true; 276 modules++; 277 } else if (modules[1] == '2') { 278 debug.DEBUG_GRAPH2 = true; 279 modules++; 280 } else if (modules[1] == '3') { 281 debug.DEBUG_GRAPH3 = true; 282 modules++; 283 } 284 break; 285 case 'h': 286 debug.DEBUG_HASH = true; 287 break; 288 case 'j': 289 debug.DEBUG_JOB = true; 290 break; 291 case 'L': 292 opts.strict = true; 293 break; 294 case 'l': 295 debug.DEBUG_LOUD = true; 296 break; 297 case 'M': 298 debug.DEBUG_META = true; 299 break; 300 case 'm': 301 debug.DEBUG_MAKE = true; 302 break; 303 case 'n': 304 debug.DEBUG_SCRIPT = true; 305 break; 306 case 'p': 307 debug.DEBUG_PARSE = true; 308 break; 309 case 's': 310 debug.DEBUG_SUFF = true; 311 break; 312 case 't': 313 debug.DEBUG_TARG = true; 314 break; 315 case 'V': 316 opts.debugVflag = true; 317 break; 318 case 'v': 319 debug.DEBUG_VAR = true; 320 break; 321 case 'x': 322 debug.DEBUG_SHELL = true; 323 break; 324 case 'F': 325 MainParseArgDebugFile(modules + 1); 326 goto debug_setbuf; 327 default: 328 (void)fprintf(stderr, 329 "%s: illegal argument to d option -- %c\n", 330 progname, *modules); 331 usage(); 332 } 333 } 334 335 debug_setbuf: 336 opts.debug = debug; 337 338 /* 339 * Make the debug_file unbuffered, and make 340 * stdout line buffered (unless debugfile == stdout). 341 */ 342 setvbuf(opts.debug_file, NULL, _IONBF, 0); 343 if (opts.debug_file != stdout) { 344 setvbuf(stdout, NULL, _IOLBF, 0); 345 } 346 } 347 348 /* Is path relative, or does it contain any relative component "." or ".."? */ 349 static bool 350 IsRelativePath(const char *path) 351 { 352 const char *p; 353 354 if (path[0] != '/') 355 return true; 356 p = path; 357 while ((p = strstr(p, "/.")) != NULL) { 358 p += 2; 359 if (*p == '.') 360 p++; 361 if (*p == '/' || *p == '\0') 362 return true; 363 } 364 return false; 365 } 366 367 static void 368 MainParseArgChdir(const char *argvalue) 369 { 370 struct stat sa, sb; 371 372 if (chdir(argvalue) == -1) { 373 (void)fprintf(stderr, "%s: chdir %s: %s\n", 374 progname, argvalue, strerror(errno)); 375 exit(2); /* Not 1 so -q can distinguish error */ 376 } 377 if (getcwd(curdir, MAXPATHLEN) == NULL) { 378 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 379 exit(2); 380 } 381 if (!IsRelativePath(argvalue) && 382 stat(argvalue, &sa) != -1 && 383 stat(curdir, &sb) != -1 && 384 sa.st_ino == sb.st_ino && 385 sa.st_dev == sb.st_dev) 386 strncpy(curdir, argvalue, MAXPATHLEN); 387 ignorePWD = true; 388 } 389 390 static void 391 MainParseArgJobsInternal(const char *argvalue) 392 { 393 char end; 394 if (sscanf(argvalue, "%d,%d%c", &jp_0, &jp_1, &end) != 2) { 395 (void)fprintf(stderr, 396 "%s: internal error -- J option malformed (%s)\n", 397 progname, argvalue); 398 usage(); 399 } 400 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 401 (fcntl(jp_1, F_GETFD, 0) < 0)) { 402 #if 0 403 (void)fprintf(stderr, 404 "%s: ###### warning -- J descriptors were closed!\n", 405 progname); 406 exit(2); 407 #endif 408 jp_0 = -1; 409 jp_1 = -1; 410 opts.compatMake = true; 411 } else { 412 Global_Append(MAKEFLAGS, "-J"); 413 Global_Append(MAKEFLAGS, argvalue); 414 } 415 } 416 417 static void 418 MainParseArgJobs(const char *argvalue) 419 { 420 char *p; 421 422 forceJobs = true; 423 opts.maxJobs = (int)strtol(argvalue, &p, 0); 424 if (*p != '\0' || opts.maxJobs < 1) { 425 (void)fprintf(stderr, 426 "%s: illegal argument to -j -- must be positive integer!\n", 427 progname); 428 exit(2); /* Not 1 so -q can distinguish error */ 429 } 430 Global_Append(MAKEFLAGS, "-j"); 431 Global_Append(MAKEFLAGS, argvalue); 432 Global_Set(".MAKE.JOBS", argvalue); 433 maxJobTokens = opts.maxJobs; 434 } 435 436 static void 437 MainParseArgSysInc(const char *argvalue) 438 { 439 /* look for magic parent directory search string */ 440 if (strncmp(".../", argvalue, 4) == 0) { 441 char *found_path = Dir_FindHereOrAbove(curdir, argvalue + 4); 442 if (found_path == NULL) 443 return; 444 (void)SearchPath_Add(sysIncPath, found_path); 445 free(found_path); 446 } else { 447 (void)SearchPath_Add(sysIncPath, argvalue); 448 } 449 Global_Append(MAKEFLAGS, "-m"); 450 Global_Append(MAKEFLAGS, argvalue); 451 } 452 453 static bool 454 MainParseArg(char c, const char *argvalue) 455 { 456 switch (c) { 457 case '\0': 458 break; 459 case 'B': 460 opts.compatMake = true; 461 Global_Append(MAKEFLAGS, "-B"); 462 Global_Set(MAKE_MODE, "compat"); 463 break; 464 case 'C': 465 MainParseArgChdir(argvalue); 466 break; 467 case 'D': 468 if (argvalue[0] == '\0') 469 return false; 470 Global_SetExpand(argvalue, "1"); 471 Global_Append(MAKEFLAGS, "-D"); 472 Global_Append(MAKEFLAGS, argvalue); 473 break; 474 case 'I': 475 Parse_AddIncludeDir(argvalue); 476 Global_Append(MAKEFLAGS, "-I"); 477 Global_Append(MAKEFLAGS, argvalue); 478 break; 479 case 'J': 480 MainParseArgJobsInternal(argvalue); 481 break; 482 case 'N': 483 opts.noExecute = true; 484 opts.noRecursiveExecute = true; 485 Global_Append(MAKEFLAGS, "-N"); 486 break; 487 case 'S': 488 opts.keepgoing = false; 489 Global_Append(MAKEFLAGS, "-S"); 490 break; 491 case 'T': 492 tracefile = bmake_strdup(argvalue); 493 Global_Append(MAKEFLAGS, "-T"); 494 Global_Append(MAKEFLAGS, argvalue); 495 break; 496 case 'V': 497 case 'v': 498 opts.printVars = c == 'v' ? PVM_EXPANDED : PVM_UNEXPANDED; 499 Lst_Append(&opts.variables, bmake_strdup(argvalue)); 500 /* XXX: Why always -V? */ 501 Global_Append(MAKEFLAGS, "-V"); 502 Global_Append(MAKEFLAGS, argvalue); 503 break; 504 case 'W': 505 opts.parseWarnFatal = true; 506 /* XXX: why no Var_Append? */ 507 break; 508 case 'X': 509 opts.varNoExportEnv = true; 510 Global_Append(MAKEFLAGS, "-X"); 511 break; 512 case 'd': 513 /* If '-d-opts' don't pass to children */ 514 if (argvalue[0] == '-') 515 argvalue++; 516 else { 517 Global_Append(MAKEFLAGS, "-d"); 518 Global_Append(MAKEFLAGS, argvalue); 519 } 520 MainParseArgDebug(argvalue); 521 break; 522 case 'e': 523 opts.checkEnvFirst = true; 524 Global_Append(MAKEFLAGS, "-e"); 525 break; 526 case 'f': 527 Lst_Append(&opts.makefiles, bmake_strdup(argvalue)); 528 break; 529 case 'i': 530 opts.ignoreErrors = true; 531 Global_Append(MAKEFLAGS, "-i"); 532 break; 533 case 'j': 534 MainParseArgJobs(argvalue); 535 break; 536 case 'k': 537 opts.keepgoing = true; 538 Global_Append(MAKEFLAGS, "-k"); 539 break; 540 case 'm': 541 MainParseArgSysInc(argvalue); 542 /* XXX: why no Var_Append? */ 543 break; 544 case 'n': 545 opts.noExecute = true; 546 Global_Append(MAKEFLAGS, "-n"); 547 break; 548 case 'q': 549 opts.queryFlag = true; 550 /* Kind of nonsensical, wot? */ 551 Global_Append(MAKEFLAGS, "-q"); 552 break; 553 case 'r': 554 opts.noBuiltins = true; 555 Global_Append(MAKEFLAGS, "-r"); 556 break; 557 case 's': 558 opts.beSilent = true; 559 Global_Append(MAKEFLAGS, "-s"); 560 break; 561 case 't': 562 opts.touchFlag = true; 563 Global_Append(MAKEFLAGS, "-t"); 564 break; 565 case 'w': 566 opts.enterFlag = true; 567 Global_Append(MAKEFLAGS, "-w"); 568 break; 569 default: 570 case '?': 571 usage(); 572 } 573 return true; 574 } 575 576 /* 577 * Parse the given arguments. Called from main() and from 578 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 579 * 580 * The arguments must be treated as read-only and will be freed after the 581 * call. 582 * 583 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 584 */ 585 static void 586 MainParseArgs(int argc, char **argv) 587 { 588 char c; 589 int arginc; 590 char *argvalue; 591 char *optscan; 592 bool inOption, dashDash = false; 593 594 const char *optspecs = "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w"; 595 /* Can't actually use getopt(3) because rescanning is not portable */ 596 597 rearg: 598 inOption = false; 599 optscan = NULL; 600 while (argc > 1) { 601 const char *optspec; 602 if (!inOption) 603 optscan = argv[1]; 604 c = *optscan++; 605 arginc = 0; 606 if (inOption) { 607 if (c == '\0') { 608 argv++; 609 argc--; 610 inOption = false; 611 continue; 612 } 613 } else { 614 if (c != '-' || dashDash) 615 break; 616 inOption = true; 617 c = *optscan++; 618 } 619 /* '-' found at some earlier point */ 620 optspec = strchr(optspecs, c); 621 if (c != '\0' && optspec != NULL && optspec[1] == ':') { 622 /* -<something> found, and <something> should have an arg */ 623 inOption = false; 624 arginc = 1; 625 argvalue = optscan; 626 if (*argvalue == '\0') { 627 if (argc < 3) 628 goto noarg; 629 argvalue = argv[2]; 630 arginc = 2; 631 } 632 } else { 633 argvalue = NULL; 634 } 635 switch (c) { 636 case '\0': 637 arginc = 1; 638 inOption = false; 639 break; 640 case '-': 641 dashDash = true; 642 break; 643 default: 644 if (!MainParseArg(c, argvalue)) 645 goto noarg; 646 } 647 argv += arginc; 648 argc -= arginc; 649 } 650 651 /* 652 * See if the rest of the arguments are variable assignments and 653 * perform them if so. Else take them to be targets and stuff them 654 * on the end of the "create" list. 655 */ 656 for (; argc > 1; argv++, argc--) { 657 VarAssign var; 658 if (Parse_IsVar(argv[1], &var)) { 659 Parse_Var(&var, SCOPE_CMDLINE); 660 } else { 661 if (argv[1][0] == '\0') 662 Punt("illegal (null) argument."); 663 if (argv[1][0] == '-' && !dashDash) 664 goto rearg; 665 Lst_Append(&opts.create, bmake_strdup(argv[1])); 666 } 667 } 668 669 return; 670 noarg: 671 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 672 progname, c); 673 usage(); 674 } 675 676 /* 677 * Break a line of arguments into words and parse them. 678 * 679 * Used when a .MFLAGS or .MAKEFLAGS target is encountered during parsing and 680 * by main() when reading the MAKEFLAGS environment variable. 681 */ 682 void 683 Main_ParseArgLine(const char *line) 684 { 685 Words words; 686 char *buf; 687 688 if (line == NULL) 689 return; 690 /* XXX: don't use line as an iterator variable */ 691 for (; *line == ' '; line++) 692 continue; 693 if (line[0] == '\0') 694 return; 695 696 { 697 FStr argv0 = Var_Value(SCOPE_GLOBAL, ".MAKE"); 698 buf = str_concat3(argv0.str, " ", line); 699 FStr_Done(&argv0); 700 } 701 702 words = Str_Words(buf, true); 703 if (words.words == NULL) { 704 Error("Unterminated quoted string [%s]", buf); 705 free(buf); 706 return; 707 } 708 free(buf); 709 MainParseArgs((int)words.len, words.words); 710 711 Words_Free(words); 712 } 713 714 bool 715 Main_SetObjdir(bool writable, const char *fmt, ...) 716 { 717 struct stat sb; 718 char *path; 719 char buf[MAXPATHLEN + 1]; 720 char buf2[MAXPATHLEN + 1]; 721 bool rc = false; 722 va_list ap; 723 724 va_start(ap, fmt); 725 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 726 va_end(ap); 727 728 if (path[0] != '/') { 729 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 730 path = buf2; 731 } 732 733 /* look for the directory and try to chdir there */ 734 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 735 if ((writable && access(path, W_OK) != 0) || 736 (chdir(path) != 0)) { 737 (void)fprintf(stderr, "%s warning: %s: %s.\n", 738 progname, path, strerror(errno)); 739 } else { 740 snprintf(objdir, sizeof objdir, "%s", path); 741 Global_Set(".OBJDIR", objdir); 742 setenv("PWD", objdir, 1); 743 Dir_InitDot(); 744 purge_relative_cached_realpaths(); 745 rc = true; 746 if (opts.enterFlag && strcmp(objdir, curdir) != 0) 747 enterFlagObj = true; 748 } 749 } 750 751 return rc; 752 } 753 754 static bool 755 SetVarObjdir(bool writable, const char *var, const char *suffix) 756 { 757 FStr path = Var_Value(SCOPE_CMDLINE, var); 758 FStr xpath; 759 760 if (path.str == NULL || path.str[0] == '\0') { 761 FStr_Done(&path); 762 return false; 763 } 764 765 /* expand variable substitutions */ 766 xpath = FStr_InitRefer(path.str); 767 if (strchr(path.str, '$') != 0) { 768 char *expanded; 769 (void)Var_Subst(path.str, SCOPE_GLOBAL, VARE_WANTRES, &expanded); 770 /* TODO: handle errors */ 771 xpath = FStr_InitOwn(expanded); 772 } 773 774 (void)Main_SetObjdir(writable, "%s%s", xpath.str, suffix); 775 776 FStr_Done(&xpath); 777 FStr_Done(&path); 778 return true; 779 } 780 781 /* 782 * Splits str into words, adding them to the list. 783 * The string must be kept alive as long as the list. 784 */ 785 int 786 str2Lst_Append(StringList *lp, char *str) 787 { 788 char *cp; 789 int n; 790 791 const char *sep = " \t"; 792 793 for (n = 0, cp = strtok(str, sep); cp != NULL; cp = strtok(NULL, sep)) { 794 Lst_Append(lp, cp); 795 n++; 796 } 797 return n; 798 } 799 800 #ifdef SIGINFO 801 /*ARGSUSED*/ 802 static void 803 siginfo(int signo MAKE_ATTR_UNUSED) 804 { 805 char dir[MAXPATHLEN]; 806 char str[2 * MAXPATHLEN]; 807 int len; 808 if (getcwd(dir, sizeof dir) == NULL) 809 return; 810 len = snprintf(str, sizeof str, "%s: Working in: %s\n", progname, dir); 811 if (len > 0) 812 (void)write(STDERR_FILENO, str, (size_t)len); 813 } 814 #endif 815 816 /* Allow makefiles some control over the mode we run in. */ 817 static void 818 MakeMode(void) 819 { 820 char *mode; 821 822 (void)Var_Subst("${" MAKE_MODE ":tl}", SCOPE_GLOBAL, VARE_WANTRES, &mode); 823 /* TODO: handle errors */ 824 825 if (mode[0] != '\0') { 826 if (strstr(mode, "compat") != NULL) { 827 opts.compatMake = true; 828 forceJobs = false; 829 } 830 #if USE_META 831 if (strstr(mode, "meta") != NULL) 832 meta_mode_init(mode); 833 #endif 834 } 835 836 free(mode); 837 } 838 839 static void 840 PrintVar(const char *varname, bool expandVars) 841 { 842 if (strchr(varname, '$') != NULL) { 843 char *evalue; 844 (void)Var_Subst(varname, SCOPE_GLOBAL, VARE_WANTRES, &evalue); 845 /* TODO: handle errors */ 846 printf("%s\n", evalue); 847 free(evalue); 848 849 } else if (expandVars) { 850 char *expr = str_concat3("${", varname, "}"); 851 char *evalue; 852 (void)Var_Subst(expr, SCOPE_GLOBAL, VARE_WANTRES, &evalue); 853 /* TODO: handle errors */ 854 free(expr); 855 printf("%s\n", evalue); 856 free(evalue); 857 858 } else { 859 FStr value = Var_Value(SCOPE_GLOBAL, varname); 860 printf("%s\n", value.str != NULL ? value.str : ""); 861 FStr_Done(&value); 862 } 863 } 864 865 /* 866 * Return a bool based on a variable. 867 * 868 * If the knob is not set, return the fallback. 869 * If set, anything that looks or smells like "No", "False", "Off", "0", etc. 870 * is false, otherwise true. 871 */ 872 static bool 873 GetBooleanExpr(const char *expr, bool fallback) 874 { 875 char *value; 876 bool res; 877 878 (void)Var_Subst(expr, SCOPE_GLOBAL, VARE_WANTRES, &value); 879 /* TODO: handle errors */ 880 res = ParseBoolean(value, fallback); 881 free(value); 882 return res; 883 } 884 885 static void 886 doPrintVars(void) 887 { 888 StringListNode *ln; 889 bool expandVars; 890 891 if (opts.printVars == PVM_EXPANDED) 892 expandVars = true; 893 else if (opts.debugVflag) 894 expandVars = false; 895 else 896 expandVars = GetBooleanExpr("${.MAKE.EXPAND_VARIABLES}", 897 false); 898 899 for (ln = opts.variables.first; ln != NULL; ln = ln->next) { 900 const char *varname = ln->datum; 901 PrintVar(varname, expandVars); 902 } 903 } 904 905 static bool 906 runTargets(void) 907 { 908 GNodeList targs = LST_INIT; /* target nodes to create */ 909 bool outOfDate; /* false if all targets up to date */ 910 911 /* 912 * Have now read the entire graph and need to make a list of 913 * targets to create. If none was given on the command line, 914 * we consult the parsing module to find the main target(s) 915 * to create. 916 */ 917 if (Lst_IsEmpty(&opts.create)) 918 Parse_MainName(&targs); 919 else 920 Targ_FindList(&targs, &opts.create); 921 922 if (!opts.compatMake) { 923 /* 924 * Initialize job module before traversing the graph 925 * now that any .BEGIN and .END targets have been read. 926 * This is done only if the -q flag wasn't given 927 * (to prevent the .BEGIN from being executed should 928 * it exist). 929 */ 930 if (!opts.queryFlag) { 931 Job_Init(); 932 jobsRunning = true; 933 } 934 935 /* Traverse the graph, checking on all the targets */ 936 outOfDate = Make_Run(&targs); 937 } else { 938 /* 939 * Compat_Init will take care of creating all the 940 * targets as well as initializing the module. 941 */ 942 Compat_Run(&targs); 943 outOfDate = false; 944 } 945 Lst_Done(&targs); /* Don't free the targets themselves. */ 946 return outOfDate; 947 } 948 949 /* 950 * Set up the .TARGETS variable to contain the list of targets to be 951 * created. If none specified, make the variable empty -- the parser 952 * will fill the thing in with the default or .MAIN target. 953 */ 954 static void 955 InitVarTargets(void) 956 { 957 StringListNode *ln; 958 959 if (Lst_IsEmpty(&opts.create)) { 960 Global_Set(".TARGETS", ""); 961 return; 962 } 963 964 for (ln = opts.create.first; ln != NULL; ln = ln->next) { 965 const char *name = ln->datum; 966 Global_Append(".TARGETS", name); 967 } 968 } 969 970 static void 971 InitRandom(void) 972 { 973 struct timeval tv; 974 975 gettimeofday(&tv, NULL); 976 srandom((unsigned int)(tv.tv_sec + tv.tv_usec)); 977 } 978 979 static const char * 980 InitVarMachine(const struct utsname *utsname MAKE_ATTR_UNUSED) 981 { 982 const char *machine = getenv("MACHINE"); 983 if (machine != NULL) 984 return machine; 985 986 #if defined(MAKE_NATIVE) 987 return utsname->machine; 988 #elif defined(MAKE_MACHINE) 989 return MAKE_MACHINE; 990 #else 991 return "unknown"; 992 #endif 993 } 994 995 static const char * 996 InitVarMachineArch(void) 997 { 998 const char *env = getenv("MACHINE_ARCH"); 999 if (env != NULL) 1000 return env; 1001 1002 #ifdef MAKE_NATIVE 1003 { 1004 struct utsname utsname; 1005 static char machine_arch_buf[sizeof utsname.machine]; 1006 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1007 size_t len = sizeof machine_arch_buf; 1008 1009 if (sysctl(mib, (unsigned int)__arraycount(mib), 1010 machine_arch_buf, &len, NULL, 0) < 0) { 1011 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", 1012 progname, strerror(errno)); 1013 exit(2); 1014 } 1015 1016 return machine_arch_buf; 1017 } 1018 #elif defined(MACHINE_ARCH) 1019 return MACHINE_ARCH; 1020 #elif defined(MAKE_MACHINE_ARCH) 1021 return MAKE_MACHINE_ARCH; 1022 #else 1023 return "unknown"; 1024 #endif 1025 } 1026 1027 #ifndef NO_PWD_OVERRIDE 1028 /* 1029 * All this code is so that we know where we are when we start up 1030 * on a different machine with pmake. 1031 * 1032 * XXX: Make no longer has "local" and "remote" mode. Is this code still 1033 * necessary? 1034 * 1035 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1036 * since the value of curdir can vary depending on how we got 1037 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1038 * or via subdir.mk in which case its likely a shell which does 1039 * not provide it. 1040 * 1041 * So, to stop it breaking this case only, we ignore PWD if 1042 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a variable expression. 1043 */ 1044 static void 1045 HandlePWD(const struct stat *curdir_st) 1046 { 1047 char *pwd; 1048 FStr prefix, makeobjdir; 1049 struct stat pwd_st; 1050 1051 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1052 return; 1053 1054 prefix = Var_Value(SCOPE_CMDLINE, "MAKEOBJDIRPREFIX"); 1055 if (prefix.str != NULL) { 1056 FStr_Done(&prefix); 1057 return; 1058 } 1059 1060 makeobjdir = Var_Value(SCOPE_CMDLINE, "MAKEOBJDIR"); 1061 if (makeobjdir.str != NULL && strchr(makeobjdir.str, '$') != NULL) 1062 goto ignore_pwd; 1063 1064 if (stat(pwd, &pwd_st) == 0 && 1065 curdir_st->st_ino == pwd_st.st_ino && 1066 curdir_st->st_dev == pwd_st.st_dev) 1067 (void)strncpy(curdir, pwd, MAXPATHLEN); 1068 1069 ignore_pwd: 1070 FStr_Done(&makeobjdir); 1071 } 1072 #endif 1073 1074 /* 1075 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1076 * MAKEOBJDIR is set in the environment, try only that value 1077 * and fall back to .CURDIR if it does not exist. 1078 * 1079 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1080 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1081 * of these paths exist, just use .CURDIR. 1082 */ 1083 static void 1084 InitObjdir(const char *machine, const char *machine_arch) 1085 { 1086 bool writable; 1087 1088 Dir_InitCur(curdir); 1089 writable = GetBooleanExpr("${MAKE_OBJDIR_CHECK_WRITABLE}", true); 1090 (void)Main_SetObjdir(false, "%s", curdir); 1091 1092 if (!SetVarObjdir(writable, "MAKEOBJDIRPREFIX", curdir) && 1093 !SetVarObjdir(writable, "MAKEOBJDIR", "") && 1094 !Main_SetObjdir(writable, "%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1095 !Main_SetObjdir(writable, "%s.%s", _PATH_OBJDIR, machine) && 1096 !Main_SetObjdir(writable, "%s", _PATH_OBJDIR)) 1097 (void)Main_SetObjdir(writable, "%s%s", _PATH_OBJDIRPREFIX, curdir); 1098 } 1099 1100 /* get rid of resource limit on file descriptors */ 1101 static void 1102 UnlimitFiles(void) 1103 { 1104 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1105 struct rlimit rl; 1106 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1107 rl.rlim_cur != rl.rlim_max) { 1108 rl.rlim_cur = rl.rlim_max; 1109 (void)setrlimit(RLIMIT_NOFILE, &rl); 1110 } 1111 #endif 1112 } 1113 1114 static void 1115 CmdOpts_Init(void) 1116 { 1117 opts.compatMake = false; 1118 memset(&opts.debug, 0, sizeof(opts.debug)); 1119 /* opts.debug_file has already been initialized earlier */ 1120 opts.strict = false; 1121 opts.debugVflag = false; 1122 opts.checkEnvFirst = false; 1123 Lst_Init(&opts.makefiles); 1124 opts.ignoreErrors = false; /* Pay attention to non-zero returns */ 1125 opts.maxJobs = 1; 1126 opts.keepgoing = false; /* Stop on error */ 1127 opts.noRecursiveExecute = false; /* Execute all .MAKE targets */ 1128 opts.noExecute = false; /* Execute all commands */ 1129 opts.queryFlag = false; 1130 opts.noBuiltins = false; /* Read the built-in rules */ 1131 opts.beSilent = false; /* Print commands as executed */ 1132 opts.touchFlag = false; 1133 opts.printVars = PVM_NONE; 1134 Lst_Init(&opts.variables); 1135 opts.parseWarnFatal = false; 1136 opts.enterFlag = false; 1137 opts.varNoExportEnv = false; 1138 Lst_Init(&opts.create); 1139 } 1140 1141 /* 1142 * Initialize MAKE and .MAKE to the path of the executable, so that it can be 1143 * found by execvp(3) and the shells, even after a chdir. 1144 * 1145 * If it's a relative path and contains a '/', resolve it to an absolute path. 1146 * Otherwise keep it as is, assuming it will be found in the PATH. 1147 */ 1148 static void 1149 InitVarMake(const char *argv0) 1150 { 1151 const char *make = argv0; 1152 1153 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) { 1154 char pathbuf[MAXPATHLEN]; 1155 const char *abspath = cached_realpath(argv0, pathbuf); 1156 struct stat st; 1157 if (abspath != NULL && abspath[0] == '/' && 1158 stat(make, &st) == 0) 1159 make = abspath; 1160 } 1161 1162 Global_Set("MAKE", make); 1163 Global_Set(".MAKE", make); 1164 } 1165 1166 /* 1167 * Add the directories from the colon-separated syspath to defSysIncPath. 1168 * After returning, the contents of syspath is unspecified. 1169 */ 1170 static void 1171 InitDefSysIncPath(char *syspath) 1172 { 1173 static char defsyspath[] = _PATH_DEFSYSPATH; 1174 char *start, *cp; 1175 1176 /* 1177 * If no user-supplied system path was given (through the -m option) 1178 * add the directories from the DEFSYSPATH (more than one may be given 1179 * as dir1:...:dirn) to the system include path. 1180 */ 1181 if (syspath == NULL || syspath[0] == '\0') 1182 syspath = defsyspath; 1183 else 1184 syspath = bmake_strdup(syspath); 1185 1186 for (start = syspath; *start != '\0'; start = cp) { 1187 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1188 continue; 1189 if (*cp == ':') 1190 *cp++ = '\0'; 1191 1192 /* look for magic parent directory search string */ 1193 if (strncmp(start, ".../", 4) == 0) { 1194 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1195 if (dir != NULL) { 1196 (void)SearchPath_Add(defSysIncPath, dir); 1197 free(dir); 1198 } 1199 } else { 1200 (void)SearchPath_Add(defSysIncPath, start); 1201 } 1202 } 1203 1204 if (syspath != defsyspath) 1205 free(syspath); 1206 } 1207 1208 static void 1209 ReadBuiltinRules(void) 1210 { 1211 StringListNode *ln; 1212 StringList sysMkFiles = LST_INIT; 1213 1214 SearchPath_Expand( 1215 Lst_IsEmpty(&sysIncPath->dirs) ? defSysIncPath : sysIncPath, 1216 _PATH_DEFSYSMK, 1217 &sysMkFiles); 1218 if (Lst_IsEmpty(&sysMkFiles)) 1219 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK); 1220 1221 for (ln = sysMkFiles.first; ln != NULL; ln = ln->next) 1222 if (ReadMakefile(ln->datum) == 0) 1223 break; 1224 1225 if (ln == NULL) 1226 Fatal("%s: cannot open %s.", 1227 progname, (const char *)sysMkFiles.first->datum); 1228 1229 /* Free the list nodes but not the actual filenames since these may 1230 * still be used in GNodes. */ 1231 Lst_Done(&sysMkFiles); 1232 } 1233 1234 static void 1235 InitMaxJobs(void) 1236 { 1237 char *value; 1238 int n; 1239 1240 if (forceJobs || opts.compatMake || 1241 !Var_Exists(SCOPE_GLOBAL, ".MAKE.JOBS")) 1242 return; 1243 1244 (void)Var_Subst("${.MAKE.JOBS}", SCOPE_GLOBAL, VARE_WANTRES, &value); 1245 /* TODO: handle errors */ 1246 n = (int)strtol(value, NULL, 0); 1247 if (n < 1) { 1248 (void)fprintf(stderr, 1249 "%s: illegal value for .MAKE.JOBS " 1250 "-- must be positive integer!\n", 1251 progname); 1252 exit(2); /* Not 1 so -q can distinguish error */ 1253 } 1254 1255 if (n != opts.maxJobs) { 1256 Global_Append(MAKEFLAGS, "-j"); 1257 Global_Append(MAKEFLAGS, value); 1258 } 1259 1260 opts.maxJobs = n; 1261 maxJobTokens = opts.maxJobs; 1262 forceJobs = true; 1263 free(value); 1264 } 1265 1266 /* 1267 * For compatibility, look at the directories in the VPATH variable 1268 * and add them to the search path, if the variable is defined. The 1269 * variable's value is in the same format as the PATH environment 1270 * variable, i.e. <directory>:<directory>:<directory>... 1271 */ 1272 static void 1273 InitVpath(void) 1274 { 1275 char *vpath, savec, *path; 1276 if (!Var_Exists(SCOPE_CMDLINE, "VPATH")) 1277 return; 1278 1279 (void)Var_Subst("${VPATH}", SCOPE_CMDLINE, VARE_WANTRES, &vpath); 1280 /* TODO: handle errors */ 1281 path = vpath; 1282 do { 1283 char *cp; 1284 /* skip to end of directory */ 1285 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1286 continue; 1287 /* Save terminator character so know when to stop */ 1288 savec = *cp; 1289 *cp = '\0'; 1290 /* Add directory to search path */ 1291 (void)SearchPath_Add(&dirSearchPath, path); 1292 *cp = savec; 1293 path = cp + 1; 1294 } while (savec == ':'); 1295 free(vpath); 1296 } 1297 1298 static void 1299 ReadAllMakefiles(StringList *makefiles) 1300 { 1301 StringListNode *ln; 1302 1303 for (ln = makefiles->first; ln != NULL; ln = ln->next) { 1304 const char *fname = ln->datum; 1305 if (ReadMakefile(fname) != 0) 1306 Fatal("%s: cannot open %s.", progname, fname); 1307 } 1308 } 1309 1310 static void 1311 ReadFirstDefaultMakefile(void) 1312 { 1313 StringListNode *ln; 1314 char *prefs; 1315 1316 (void)Var_Subst("${" MAKE_MAKEFILE_PREFERENCE "}", 1317 SCOPE_CMDLINE, VARE_WANTRES, &prefs); 1318 /* TODO: handle errors */ 1319 1320 /* XXX: This should use a local list instead of opts.makefiles 1321 * since these makefiles do not come from the command line. They 1322 * also have different semantics in that only the first file that 1323 * is found is processed. See ReadAllMakefiles. */ 1324 (void)str2Lst_Append(&opts.makefiles, prefs); 1325 1326 for (ln = opts.makefiles.first; ln != NULL; ln = ln->next) 1327 if (ReadMakefile(ln->datum) == 0) 1328 break; 1329 1330 free(prefs); 1331 } 1332 1333 /* 1334 * Initialize variables such as MAKE, MACHINE, .MAKEFLAGS. 1335 * Initialize a few modules. 1336 * Parse the arguments from MAKEFLAGS and the command line. 1337 */ 1338 static void 1339 main_Init(int argc, char **argv) 1340 { 1341 struct stat sa; 1342 const char *machine; 1343 const char *machine_arch; 1344 char *syspath = getenv("MAKESYSPATH"); 1345 struct utsname utsname; 1346 1347 /* default to writing debug to stderr */ 1348 opts.debug_file = stderr; 1349 1350 Str_Intern_Init(); 1351 HashTable_Init(&cached_realpaths); 1352 1353 #ifdef SIGINFO 1354 (void)bmake_signal(SIGINFO, siginfo); 1355 #endif 1356 1357 InitRandom(); 1358 1359 progname = str_basename(argv[0]); 1360 1361 UnlimitFiles(); 1362 1363 if (uname(&utsname) == -1) { 1364 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1365 strerror(errno)); 1366 exit(2); 1367 } 1368 1369 /* 1370 * Get the name of this type of MACHINE from utsname 1371 * so we can share an executable for similar machines. 1372 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1373 * 1374 * Note that both MACHINE and MACHINE_ARCH are decided at 1375 * run-time. 1376 */ 1377 machine = InitVarMachine(&utsname); 1378 machine_arch = InitVarMachineArch(); 1379 1380 myPid = getpid(); /* remember this for vFork() */ 1381 1382 /* 1383 * Just in case MAKEOBJDIR wants us to do something tricky. 1384 */ 1385 Targ_Init(); 1386 Var_Init(); 1387 Global_Set(".MAKE.OS", utsname.sysname); 1388 Global_Set("MACHINE", machine); 1389 Global_Set("MACHINE_ARCH", machine_arch); 1390 #ifdef MAKE_VERSION 1391 Global_Set("MAKE_VERSION", MAKE_VERSION); 1392 #endif 1393 Global_Set(".newline", "\n"); /* handy for :@ loops */ 1394 /* 1395 * This is the traditional preference for makefiles. 1396 */ 1397 #ifndef MAKEFILE_PREFERENCE_LIST 1398 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1399 #endif 1400 Global_Set(MAKE_MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST); 1401 Global_Set(MAKE_DEPENDFILE, ".depend"); 1402 1403 CmdOpts_Init(); 1404 allPrecious = false; /* Remove targets when interrupted */ 1405 deleteOnError = false; /* Historical default behavior */ 1406 jobsRunning = false; 1407 1408 maxJobTokens = opts.maxJobs; 1409 ignorePWD = false; 1410 1411 /* 1412 * Initialize the parsing, directory and variable modules to prepare 1413 * for the reading of inclusion paths and variable settings on the 1414 * command line 1415 */ 1416 1417 /* 1418 * Initialize various variables. 1419 * MAKE also gets this name, for compatibility 1420 * .MAKEFLAGS gets set to the empty string just in case. 1421 * MFLAGS also gets initialized empty, for compatibility. 1422 */ 1423 Parse_Init(); 1424 InitVarMake(argv[0]); 1425 Global_Set(MAKEFLAGS, ""); 1426 Global_Set(MAKEOVERRIDES, ""); 1427 Global_Set("MFLAGS", ""); 1428 Global_Set(".ALLTARGETS", ""); 1429 /* some makefiles need to know this */ 1430 Var_Set(SCOPE_CMDLINE, MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV); 1431 1432 /* Set some other useful variables. */ 1433 { 1434 char tmp[64], *ep = getenv(MAKE_LEVEL_ENV); 1435 1436 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0; 1437 if (makelevel < 0) 1438 makelevel = 0; 1439 snprintf(tmp, sizeof tmp, "%d", makelevel); 1440 Global_Set(MAKE_LEVEL, tmp); 1441 snprintf(tmp, sizeof tmp, "%u", myPid); 1442 Global_Set(".MAKE.PID", tmp); 1443 snprintf(tmp, sizeof tmp, "%u", getppid()); 1444 Global_Set(".MAKE.PPID", tmp); 1445 snprintf(tmp, sizeof tmp, "%u", getuid()); 1446 Global_Set(".MAKE.UID", tmp); 1447 snprintf(tmp, sizeof tmp, "%u", getgid()); 1448 Global_Set(".MAKE.GID", tmp); 1449 } 1450 if (makelevel > 0) { 1451 char pn[1024]; 1452 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel); 1453 progname = bmake_strdup(pn); 1454 } 1455 1456 #ifdef USE_META 1457 meta_init(); 1458 #endif 1459 Dir_Init(); 1460 1461 /* 1462 * First snag any flags out of the MAKE environment variable. 1463 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1464 * in a different format). 1465 */ 1466 #ifdef POSIX 1467 { 1468 char *p1 = explode(getenv("MAKEFLAGS")); 1469 Main_ParseArgLine(p1); 1470 free(p1); 1471 } 1472 #else 1473 Main_ParseArgLine(getenv("MAKE")); 1474 #endif 1475 1476 /* 1477 * Find where we are (now). 1478 * We take care of PWD for the automounter below... 1479 */ 1480 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1481 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1482 progname, strerror(errno)); 1483 exit(2); 1484 } 1485 1486 MainParseArgs(argc, argv); 1487 1488 if (opts.enterFlag) 1489 printf("%s: Entering directory `%s'\n", progname, curdir); 1490 1491 /* 1492 * Verify that cwd is sane. 1493 */ 1494 if (stat(curdir, &sa) == -1) { 1495 (void)fprintf(stderr, "%s: %s: %s.\n", 1496 progname, curdir, strerror(errno)); 1497 exit(2); 1498 } 1499 1500 #ifndef NO_PWD_OVERRIDE 1501 HandlePWD(&sa); 1502 #endif 1503 Global_Set(".CURDIR", curdir); 1504 1505 InitObjdir(machine, machine_arch); 1506 1507 /* 1508 * Initialize archive, target and suffix modules in preparation for 1509 * parsing the makefile(s) 1510 */ 1511 Arch_Init(); 1512 Suff_Init(); 1513 Trace_Init(tracefile); 1514 1515 defaultNode = NULL; 1516 (void)time(&now); 1517 1518 Trace_Log(MAKESTART, NULL); 1519 1520 InitVarTargets(); 1521 1522 InitDefSysIncPath(syspath); 1523 } 1524 1525 /* 1526 * Read the system makefile followed by either makefile, Makefile or the 1527 * files given by the -f option. Exit on parse errors. 1528 */ 1529 static void 1530 main_ReadFiles(void) 1531 { 1532 1533 if (!opts.noBuiltins) 1534 ReadBuiltinRules(); 1535 1536 if (!Lst_IsEmpty(&opts.makefiles)) 1537 ReadAllMakefiles(&opts.makefiles); 1538 else 1539 ReadFirstDefaultMakefile(); 1540 } 1541 1542 /* Compute the dependency graph. */ 1543 static void 1544 main_PrepareMaking(void) 1545 { 1546 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1547 if (!opts.noBuiltins || opts.printVars == PVM_NONE) { 1548 (void)Var_Subst("${.MAKE.DEPENDFILE}", 1549 SCOPE_CMDLINE, VARE_WANTRES, &makeDependfile); 1550 if (makeDependfile[0] != '\0') { 1551 /* TODO: handle errors */ 1552 doing_depend = true; 1553 (void)ReadMakefile(makeDependfile); 1554 doing_depend = false; 1555 } 1556 } 1557 1558 if (enterFlagObj) 1559 printf("%s: Entering directory `%s'\n", progname, objdir); 1560 1561 MakeMode(); 1562 1563 { 1564 FStr makeflags = Var_Value(SCOPE_GLOBAL, MAKEFLAGS); 1565 Global_Append("MFLAGS", makeflags.str); 1566 FStr_Done(&makeflags); 1567 } 1568 1569 InitMaxJobs(); 1570 1571 /* 1572 * Be compatible if the user did not specify -j and did not explicitly 1573 * turn compatibility on. 1574 */ 1575 if (!opts.compatMake && !forceJobs) 1576 opts.compatMake = true; 1577 1578 if (!opts.compatMake) 1579 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1580 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1581 jp_0, jp_1, opts.maxJobs, maxJobTokens, opts.compatMake ? 1 : 0); 1582 1583 if (opts.printVars == PVM_NONE) 1584 Main_ExportMAKEFLAGS(true); /* initial export */ 1585 1586 InitVpath(); 1587 1588 /* 1589 * Now that all search paths have been read for suffixes et al, it's 1590 * time to add the default search path to their lists... 1591 */ 1592 Suff_ExtendPaths(); 1593 1594 /* 1595 * Propagate attributes through :: dependency lists. 1596 */ 1597 Targ_Propagate(); 1598 1599 /* print the initial graph, if the user requested it */ 1600 if (DEBUG(GRAPH1)) 1601 Targ_PrintGraph(1); 1602 } 1603 1604 /* 1605 * Make the targets. 1606 * If the -v or -V options are given, print variables instead. 1607 * Return whether any of the targets is out-of-date. 1608 */ 1609 static bool 1610 main_Run(void) 1611 { 1612 if (opts.printVars != PVM_NONE) { 1613 /* print the values of any variables requested by the user */ 1614 doPrintVars(); 1615 return false; 1616 } else { 1617 return runTargets(); 1618 } 1619 } 1620 1621 /* Clean up after making the targets. */ 1622 static void 1623 main_CleanUp(void) 1624 { 1625 #ifdef CLEANUP 1626 Lst_DoneCall(&opts.variables, free); 1627 /* 1628 * Don't free the actual strings from opts.makefiles, they may be 1629 * used in GNodes. 1630 */ 1631 Lst_Done(&opts.makefiles); 1632 Lst_DoneCall(&opts.create, free); 1633 #endif 1634 1635 /* print the graph now it's been processed if the user requested it */ 1636 if (DEBUG(GRAPH2)) 1637 Targ_PrintGraph(2); 1638 1639 Trace_Log(MAKEEND, NULL); 1640 1641 if (enterFlagObj) 1642 printf("%s: Leaving directory `%s'\n", progname, objdir); 1643 if (opts.enterFlag) 1644 printf("%s: Leaving directory `%s'\n", progname, curdir); 1645 1646 #ifdef USE_META 1647 meta_finish(); 1648 #endif 1649 Suff_End(); 1650 Targ_End(); 1651 Arch_End(); 1652 Var_End(); 1653 Parse_End(); 1654 Dir_End(); 1655 Job_End(); 1656 Trace_End(); 1657 Str_Intern_End(); 1658 } 1659 1660 /* Determine the exit code. */ 1661 static int 1662 main_Exit(bool outOfDate) 1663 { 1664 if (opts.strict && (main_errors > 0 || Parse_NumErrors() > 0)) 1665 return 2; /* Not 1 so -q can distinguish error */ 1666 return outOfDate ? 1 : 0; 1667 } 1668 1669 int 1670 main(int argc, char **argv) 1671 { 1672 bool outOfDate; 1673 1674 main_Init(argc, argv); 1675 main_ReadFiles(); 1676 main_PrepareMaking(); 1677 outOfDate = main_Run(); 1678 main_CleanUp(); 1679 return main_Exit(outOfDate); 1680 } 1681 1682 /* 1683 * Open and parse the given makefile, with all its side effects. 1684 * 1685 * Results: 1686 * 0 if ok. -1 if couldn't open file. 1687 */ 1688 static int 1689 ReadMakefile(const char *fname) 1690 { 1691 int fd; 1692 char *name, *path = NULL; 1693 1694 if (strcmp(fname, "-") == 0) { 1695 Parse_File(NULL /*stdin*/, -1); 1696 Var_Set(SCOPE_INTERNAL, "MAKEFILE", ""); 1697 } else { 1698 /* if we've chdir'd, rebuild the path name */ 1699 if (strcmp(curdir, objdir) != 0 && *fname != '/') { 1700 path = str_concat3(curdir, "/", fname); 1701 fd = open(path, O_RDONLY); 1702 if (fd != -1) { 1703 fname = path; 1704 goto found; 1705 } 1706 free(path); 1707 1708 /* If curdir failed, try objdir (ala .depend) */ 1709 path = str_concat3(objdir, "/", fname); 1710 fd = open(path, O_RDONLY); 1711 if (fd != -1) { 1712 fname = path; 1713 goto found; 1714 } 1715 } else { 1716 fd = open(fname, O_RDONLY); 1717 if (fd != -1) 1718 goto found; 1719 } 1720 /* look in -I and system include directories. */ 1721 name = Dir_FindFile(fname, parseIncPath); 1722 if (name == NULL) { 1723 SearchPath *sysInc = Lst_IsEmpty(&sysIncPath->dirs) 1724 ? defSysIncPath : sysIncPath; 1725 name = Dir_FindFile(fname, sysInc); 1726 } 1727 if (name == NULL || (fd = open(name, O_RDONLY)) == -1) { 1728 free(name); 1729 free(path); 1730 return -1; 1731 } 1732 fname = name; 1733 /* 1734 * set the MAKEFILE variable desired by System V fans -- the 1735 * placement of the setting here means it gets set to the last 1736 * makefile specified, as it is set by SysV make. 1737 */ 1738 found: 1739 if (!doing_depend) 1740 Var_Set(SCOPE_INTERNAL, "MAKEFILE", fname); 1741 Parse_File(fname, fd); 1742 } 1743 free(path); 1744 return 0; 1745 } 1746 1747 /* 1748 * Cmd_Exec -- 1749 * Execute the command in cmd, and return the output of that command 1750 * in a string. In the output, newlines are replaced with spaces. 1751 * 1752 * Results: 1753 * A string containing the output of the command, or the empty string. 1754 * *errfmt returns a format string describing the command failure, 1755 * if any, using a single %s conversion specification. 1756 * 1757 * Side Effects: 1758 * The string must be freed by the caller. 1759 */ 1760 char * 1761 Cmd_Exec(const char *cmd, const char **errfmt) 1762 { 1763 const char *args[4]; /* Args for invoking the shell */ 1764 int pipefds[2]; 1765 int cpid; /* Child PID */ 1766 int pid; /* PID from wait() */ 1767 int status; /* command exit status */ 1768 Buffer buf; /* buffer to store the result */ 1769 ssize_t bytes_read; 1770 char *res; /* result */ 1771 size_t res_len; 1772 char *cp; 1773 int savederr; /* saved errno */ 1774 1775 *errfmt = NULL; 1776 1777 if (shellName == NULL) 1778 Shell_Init(); 1779 /* 1780 * Set up arguments for shell 1781 */ 1782 args[0] = shellName; 1783 args[1] = "-c"; 1784 args[2] = cmd; 1785 args[3] = NULL; 1786 1787 /* 1788 * Open a pipe for fetching its output 1789 */ 1790 if (pipe(pipefds) == -1) { 1791 *errfmt = "Couldn't create pipe for \"%s\""; 1792 goto bad; 1793 } 1794 1795 Var_ReexportVars(); 1796 1797 /* 1798 * Fork 1799 */ 1800 switch (cpid = vfork()) { 1801 case 0: 1802 (void)close(pipefds[0]); /* Close input side of pipe */ 1803 1804 /* 1805 * Duplicate the output stream to the shell's output, then 1806 * shut the extra thing down. Note we don't fetch the error 1807 * stream...why not? Why? 1808 */ 1809 (void)dup2(pipefds[1], 1); 1810 (void)close(pipefds[1]); 1811 1812 (void)execv(shellPath, UNCONST(args)); 1813 _exit(1); 1814 /*NOTREACHED*/ 1815 1816 case -1: 1817 *errfmt = "Couldn't exec \"%s\""; 1818 goto bad; 1819 1820 default: 1821 (void)close(pipefds[1]); /* No need for the writing half */ 1822 1823 savederr = 0; 1824 Buf_Init(&buf); 1825 1826 do { 1827 char result[BUFSIZ]; 1828 bytes_read = read(pipefds[0], result, sizeof result); 1829 if (bytes_read > 0) 1830 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1831 } while (bytes_read > 0 || 1832 (bytes_read == -1 && errno == EINTR)); 1833 if (bytes_read == -1) 1834 savederr = errno; 1835 1836 (void)close(pipefds[0]); /* Close the input side of the pipe. */ 1837 1838 /* Wait for the process to exit. */ 1839 while ((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0) 1840 JobReapChild(pid, status, false); 1841 1842 res_len = buf.len; 1843 res = Buf_DoneData(&buf); 1844 1845 if (savederr != 0) 1846 *errfmt = "Couldn't read shell's output for \"%s\""; 1847 1848 if (WIFSIGNALED(status)) 1849 *errfmt = "\"%s\" exited on a signal"; 1850 else if (WEXITSTATUS(status) != 0) 1851 *errfmt = "\"%s\" returned non-zero status"; 1852 1853 /* Convert newlines to spaces. A final newline is just stripped */ 1854 if (res_len > 0 && res[res_len - 1] == '\n') 1855 res[res_len - 1] = '\0'; 1856 for (cp = res; *cp != '\0'; cp++) 1857 if (*cp == '\n') 1858 *cp = ' '; 1859 break; 1860 } 1861 return res; 1862 bad: 1863 return bmake_strdup(""); 1864 } 1865 1866 /* 1867 * Print a printf-style error message. 1868 * 1869 * In default mode, this error message has no consequences, in particular it 1870 * does not affect the exit status. Only in lint mode (-dL) it does. 1871 */ 1872 void 1873 Error(const char *fmt, ...) 1874 { 1875 va_list ap; 1876 FILE *err_file; 1877 1878 err_file = opts.debug_file; 1879 if (err_file == stdout) 1880 err_file = stderr; 1881 (void)fflush(stdout); 1882 for (;;) { 1883 va_start(ap, fmt); 1884 fprintf(err_file, "%s: ", progname); 1885 (void)vfprintf(err_file, fmt, ap); 1886 va_end(ap); 1887 (void)fprintf(err_file, "\n"); 1888 (void)fflush(err_file); 1889 if (err_file == stderr) 1890 break; 1891 err_file = stderr; 1892 } 1893 main_errors++; 1894 } 1895 1896 /* 1897 * Wait for any running jobs to finish, then produce an error message, 1898 * finally exit immediately. 1899 * 1900 * Exiting immediately differs from Parse_Error, which exits only after the 1901 * current top-level makefile has been parsed completely. 1902 */ 1903 void 1904 Fatal(const char *fmt, ...) 1905 { 1906 va_list ap; 1907 1908 if (jobsRunning) 1909 Job_Wait(); 1910 1911 (void)fflush(stdout); 1912 va_start(ap, fmt); 1913 (void)vfprintf(stderr, fmt, ap); 1914 va_end(ap); 1915 (void)fprintf(stderr, "\n"); 1916 (void)fflush(stderr); 1917 1918 PrintOnError(NULL, NULL); 1919 1920 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1921 Targ_PrintGraph(2); 1922 Trace_Log(MAKEERROR, NULL); 1923 exit(2); /* Not 1 so -q can distinguish error */ 1924 } 1925 1926 /* 1927 * Major exception once jobs are being created. 1928 * Kills all jobs, prints a message and exits. 1929 */ 1930 void 1931 Punt(const char *fmt, ...) 1932 { 1933 va_list ap; 1934 1935 va_start(ap, fmt); 1936 (void)fflush(stdout); 1937 (void)fprintf(stderr, "%s: ", progname); 1938 (void)vfprintf(stderr, fmt, ap); 1939 va_end(ap); 1940 (void)fprintf(stderr, "\n"); 1941 (void)fflush(stderr); 1942 1943 PrintOnError(NULL, NULL); 1944 1945 DieHorribly(); 1946 } 1947 1948 /* Exit without giving a message. */ 1949 void 1950 DieHorribly(void) 1951 { 1952 if (jobsRunning) 1953 Job_AbortAll(); 1954 if (DEBUG(GRAPH2)) 1955 Targ_PrintGraph(2); 1956 Trace_Log(MAKEERROR, NULL); 1957 exit(2); /* Not 1 so -q can distinguish error */ 1958 } 1959 1960 /* 1961 * Called when aborting due to errors in child shell to signal abnormal exit. 1962 * The program exits. 1963 * Errors is the number of errors encountered in Make_Make. 1964 */ 1965 void 1966 Finish(int errs) 1967 { 1968 if (shouldDieQuietly(NULL, -1)) 1969 exit(2); 1970 Fatal("%d error%s", errs, errs == 1 ? "" : "s"); 1971 } 1972 1973 /* 1974 * eunlink -- 1975 * Remove a file carefully, avoiding directories. 1976 */ 1977 int 1978 eunlink(const char *file) 1979 { 1980 struct stat st; 1981 1982 if (lstat(file, &st) == -1) 1983 return -1; 1984 1985 if (S_ISDIR(st.st_mode)) { 1986 errno = EISDIR; 1987 return -1; 1988 } 1989 return unlink(file); 1990 } 1991 1992 static void 1993 write_all(int fd, const void *data, size_t n) 1994 { 1995 const char *mem = data; 1996 1997 while (n > 0) { 1998 ssize_t written = write(fd, mem, n); 1999 if (written == -1 && errno == EAGAIN) 2000 continue; 2001 if (written == -1) 2002 break; 2003 mem += written; 2004 n -= (size_t)written; 2005 } 2006 } 2007 2008 /* 2009 * execDie -- 2010 * Print why exec failed, avoiding stdio. 2011 */ 2012 void MAKE_ATTR_DEAD 2013 execDie(const char *af, const char *av) 2014 { 2015 Buffer buf; 2016 2017 Buf_Init(&buf); 2018 Buf_AddStr(&buf, progname); 2019 Buf_AddStr(&buf, ": "); 2020 Buf_AddStr(&buf, af); 2021 Buf_AddStr(&buf, "("); 2022 Buf_AddStr(&buf, av); 2023 Buf_AddStr(&buf, ") failed ("); 2024 Buf_AddStr(&buf, strerror(errno)); 2025 Buf_AddStr(&buf, ")\n"); 2026 2027 write_all(STDERR_FILENO, buf.data, buf.len); 2028 2029 Buf_Done(&buf); 2030 _exit(1); 2031 } 2032 2033 /* purge any relative paths */ 2034 static void 2035 purge_relative_cached_realpaths(void) 2036 { 2037 HashEntry *he, *nhe; 2038 HashIter hi; 2039 2040 HashIter_Init(&hi, &cached_realpaths); 2041 he = HashIter_Next(&hi); 2042 while (he != NULL) { 2043 nhe = HashIter_Next(&hi); 2044 if (he->key[0] != '/') { 2045 DEBUG1(DIR, "cached_realpath: purging %s\n", he->key); 2046 HashTable_DeleteEntry(&cached_realpaths, he); 2047 /* XXX: What about the allocated he->value? Either 2048 * free them or document why they cannot be freed. */ 2049 } 2050 he = nhe; 2051 } 2052 } 2053 2054 char * 2055 cached_realpath(const char *pathname, char *resolved) 2056 { 2057 const char *rp; 2058 2059 if (pathname == NULL || pathname[0] == '\0') 2060 return NULL; 2061 2062 rp = HashTable_FindValue(&cached_realpaths, pathname); 2063 if (rp != NULL) { 2064 /* a hit */ 2065 strncpy(resolved, rp, MAXPATHLEN); 2066 resolved[MAXPATHLEN - 1] = '\0'; 2067 return resolved; 2068 } 2069 2070 rp = realpath(pathname, resolved); 2071 if (rp != NULL) { 2072 HashTable_Set(&cached_realpaths, pathname, bmake_strdup(rp)); 2073 DEBUG2(DIR, "cached_realpath: %s -> %s\n", pathname, rp); 2074 return resolved; 2075 } 2076 2077 /* should we negative-cache? */ 2078 return NULL; 2079 } 2080 2081 /* 2082 * Return true if we should die without noise. 2083 * For example our failing child was a sub-make or failure happened elsewhere. 2084 */ 2085 bool 2086 shouldDieQuietly(GNode *gn, int bf) 2087 { 2088 static int quietly = -1; 2089 2090 if (quietly < 0) { 2091 if (DEBUG(JOB) || 2092 !GetBooleanExpr("${.MAKE.DIE_QUIETLY}", true)) 2093 quietly = 0; 2094 else if (bf >= 0) 2095 quietly = bf; 2096 else 2097 quietly = (gn != NULL && (gn->type & OP_MAKE)) ? 1 : 0; 2098 } 2099 return quietly != 0; 2100 } 2101 2102 static void 2103 SetErrorVars(GNode *gn) 2104 { 2105 StringListNode *ln; 2106 2107 /* 2108 * We can print this even if there is no .ERROR target. 2109 */ 2110 Global_Set(".ERROR_TARGET", gn->name); 2111 Global_Delete(".ERROR_CMD"); 2112 2113 for (ln = gn->commands.first; ln != NULL; ln = ln->next) { 2114 const char *cmd = ln->datum; 2115 2116 if (cmd == NULL) 2117 break; 2118 Global_Append(".ERROR_CMD", cmd); 2119 } 2120 } 2121 2122 /* 2123 * Print some helpful information in case of an error. 2124 * The caller should exit soon after calling this function. 2125 */ 2126 void 2127 PrintOnError(GNode *gn, const char *msg) 2128 { 2129 static GNode *errorNode = NULL; 2130 2131 if (DEBUG(HASH)) { 2132 Targ_Stats(); 2133 Var_Stats(); 2134 } 2135 2136 if (errorNode != NULL) 2137 return; /* we've been here! */ 2138 2139 if (msg != NULL) 2140 printf("%s", msg); 2141 printf("\n%s: stopped in %s\n", progname, curdir); 2142 2143 /* we generally want to keep quiet if a sub-make died */ 2144 if (shouldDieQuietly(gn, -1)) 2145 return; 2146 2147 if (gn != NULL) 2148 SetErrorVars(gn); 2149 2150 { 2151 char *errorVarsValues; 2152 (void)Var_Subst("${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2153 SCOPE_GLOBAL, VARE_WANTRES, &errorVarsValues); 2154 /* TODO: handle errors */ 2155 printf("%s", errorVarsValues); 2156 free(errorVarsValues); 2157 } 2158 2159 fflush(stdout); 2160 2161 /* 2162 * Finally, see if there is a .ERROR target, and run it if so. 2163 */ 2164 errorNode = Targ_FindNode(".ERROR"); 2165 if (errorNode != NULL) { 2166 errorNode->type |= OP_SPECIAL; 2167 Compat_Make(errorNode, errorNode); 2168 } 2169 } 2170 2171 void 2172 Main_ExportMAKEFLAGS(bool first) 2173 { 2174 static bool once = true; 2175 const char *expr; 2176 char *s; 2177 2178 if (once != first) 2179 return; 2180 once = false; 2181 2182 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2183 (void)Var_Subst(expr, SCOPE_CMDLINE, VARE_WANTRES, &s); 2184 /* TODO: handle errors */ 2185 if (s[0] != '\0') { 2186 #ifdef POSIX 2187 setenv("MAKEFLAGS", s, 1); 2188 #else 2189 setenv("MAKE", s, 1); 2190 #endif 2191 } 2192 } 2193 2194 char * 2195 getTmpdir(void) 2196 { 2197 static char *tmpdir = NULL; 2198 struct stat st; 2199 2200 if (tmpdir != NULL) 2201 return tmpdir; 2202 2203 /* Honor $TMPDIR but only if it is valid. Ensure it ends with '/'. */ 2204 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP ":S,/$,,W}/", 2205 SCOPE_GLOBAL, VARE_WANTRES, &tmpdir); 2206 /* TODO: handle errors */ 2207 2208 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2209 free(tmpdir); 2210 tmpdir = bmake_strdup(_PATH_TMP); 2211 } 2212 return tmpdir; 2213 } 2214 2215 /* 2216 * Create and open a temp file using "pattern". 2217 * If out_fname is provided, set it to a copy of the filename created. 2218 * Otherwise unlink the file once open. 2219 */ 2220 int 2221 mkTempFile(const char *pattern, char *tfile, size_t tfile_sz) 2222 { 2223 static char *tmpdir = NULL; 2224 char tbuf[MAXPATHLEN]; 2225 int fd; 2226 2227 if (pattern == NULL) 2228 pattern = TMPPAT; 2229 if (tmpdir == NULL) 2230 tmpdir = getTmpdir(); 2231 if (tfile == NULL) { 2232 tfile = tbuf; 2233 tfile_sz = sizeof tbuf; 2234 } 2235 if (pattern[0] == '/') { 2236 snprintf(tfile, tfile_sz, "%s", pattern); 2237 } else { 2238 snprintf(tfile, tfile_sz, "%s%s", tmpdir, pattern); 2239 } 2240 if ((fd = mkstemp(tfile)) < 0) 2241 Punt("Could not create temporary file %s: %s", tfile, 2242 strerror(errno)); 2243 if (tfile == tbuf) { 2244 unlink(tfile); /* we just want the descriptor */ 2245 } 2246 return fd; 2247 } 2248 2249 /* 2250 * Convert a string representation of a boolean into a boolean value. 2251 * Anything that looks like "No", "False", "Off", "0" etc. is false, 2252 * the empty string is the fallback, everything else is true. 2253 */ 2254 bool 2255 ParseBoolean(const char *s, bool fallback) 2256 { 2257 char ch = ch_tolower(s[0]); 2258 if (ch == '\0') 2259 return fallback; 2260 if (ch == '0' || ch == 'f' || ch == 'n') 2261 return false; 2262 if (ch == 'o') 2263 return ch_tolower(s[1]) != 'f'; 2264 return true; 2265 } 2266
Indexes created Fri Sep 26 20:09:58 GMT 2025