main.c revision 1.373
1 /* $NetBSD: main.c,v 1.373 2020/10/18 08:01:23 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 * main.c -- 73 * The main file for this entire program. Exit routines etc 74 * reside here. 75 * 76 * Utility functions defined in this file: 77 * Main_ParseArgLine Takes a line of arguments, breaks them and 78 * treats them as if they were given when first 79 * invoked. Used by the parse module to implement 80 * the .MFLAGS target. 81 * 82 * Error Print a tagged error message. The global 83 * MAKE variable must have been defined. This 84 * takes a format string and optional arguments 85 * for it. 86 * 87 * Fatal Print an error message and exit. Also takes 88 * a format string and arguments for it. 89 * 90 * Punt Aborts all jobs and exits with a message. Also 91 * takes a format string and arguments for it. 92 * 93 * Finish Finish things up by printing the number of 94 * errors which occurred, as passed to it, and 95 * exiting. 96 */ 97 98 #include <sys/types.h> 99 #include <sys/time.h> 100 #include <sys/param.h> 101 #include <sys/resource.h> 102 #include <sys/stat.h> 103 #ifdef MAKE_NATIVE 104 #include <sys/sysctl.h> 105 #endif 106 #include <sys/utsname.h> 107 #include <sys/wait.h> 108 109 #include <errno.h> 110 #include <signal.h> 111 #include <stdarg.h> 112 #include <time.h> 113 114 #include "make.h" 115 #include "dir.h" 116 #include "job.h" 117 #include "pathnames.h" 118 #include "trace.h" 119 120 /* "@(#)main.c 8.3 (Berkeley) 3/19/94" */ 121 MAKE_RCSID("$NetBSD: main.c,v 1.373 2020/10/18 08:01:23 rillig Exp $"); 122 #if defined(MAKE_NATIVE) && !defined(lint) 123 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993 " 124 "The Regents of the University of California. " 125 "All rights reserved."); 126 #endif 127 128 #ifndef DEFMAXLOCAL 129 #define DEFMAXLOCAL DEFMAXJOBS 130 #endif 131 132 StringList * create; /* Targets to be made */ 133 time_t now; /* Time at start of make */ 134 GNode *DEFAULT; /* .DEFAULT node */ 135 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 136 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 137 138 static Boolean noBuiltins; /* -r flag */ 139 static StringList * makefiles; /* ordered list of makefiles to read */ 140 static int printVars; /* -[vV] argument */ 141 #define COMPAT_VARS 1 142 #define EXPAND_VARS 2 143 static StringList * variables; /* list of variables to print 144 * (for -v and -V) */ 145 int maxJobs; /* -j argument */ 146 static int maxJobTokens; /* -j argument */ 147 Boolean compatMake; /* -B argument */ 148 int debug; /* -d argument */ 149 Boolean debugVflag; /* -dV */ 150 Boolean noExecute; /* -n flag */ 151 Boolean noRecursiveExecute; /* -N flag */ 152 Boolean keepgoing; /* -k flag */ 153 Boolean queryFlag; /* -q flag */ 154 Boolean touchFlag; /* -t flag */ 155 Boolean enterFlag; /* -w flag */ 156 Boolean enterFlagObj; /* -w and objdir != srcdir */ 157 Boolean ignoreErrors; /* -i flag */ 158 Boolean beSilent; /* -s flag */ 159 Boolean oldVars; /* variable substitution style */ 160 Boolean checkEnvFirst; /* -e flag */ 161 Boolean parseWarnFatal; /* -W flag */ 162 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 163 Boolean varNoExportEnv; /* -X flag */ 164 Boolean doing_depend; /* Set while reading .depend */ 165 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 166 static const char * tracefile; 167 static int ReadMakefile(const char *); 168 static void usage(void) MAKE_ATTR_DEAD; 169 static void purge_cached_realpaths(void); 170 171 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 172 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 173 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 174 char *progname; /* the program name */ 175 char *makeDependfile; 176 pid_t myPid; 177 int makelevel; 178 179 FILE *debug_file; 180 181 Boolean forceJobs = FALSE; 182 183 extern SearchPath *parseIncPath; 184 185 /* 186 * For compatibility with the POSIX version of MAKEFLAGS that includes 187 * all the options with out -, convert flags to -f -l -a -g -s. 188 */ 189 static char * 190 explode(const char *flags) 191 { 192 size_t len; 193 char *nf, *st; 194 const char *f; 195 196 if (flags == NULL) 197 return NULL; 198 199 for (f = flags; *f; f++) 200 if (!ch_isalpha(*f)) 201 break; 202 203 if (*f) 204 return bmake_strdup(flags); 205 206 len = strlen(flags); 207 st = nf = bmake_malloc(len * 3 + 1); 208 while (*flags) { 209 *nf++ = '-'; 210 *nf++ = *flags++; 211 *nf++ = ' '; 212 } 213 *nf = '\0'; 214 return st; 215 } 216 217 static void 218 parse_debug_option_F(const char *modules) 219 { 220 const char *mode; 221 size_t len; 222 char *fname; 223 224 if (debug_file != stdout && debug_file != stderr) 225 fclose(debug_file); 226 227 if (*modules == '+') { 228 modules++; 229 mode = "a"; 230 } else 231 mode = "w"; 232 233 if (strcmp(modules, "stdout") == 0) { 234 debug_file = stdout; 235 return; 236 } 237 if (strcmp(modules, "stderr") == 0) { 238 debug_file = stderr; 239 return; 240 } 241 242 len = strlen(modules); 243 fname = bmake_malloc(len + 20); 244 memcpy(fname, modules, len + 1); 245 246 /* Let the filename be modified by the pid */ 247 if (strcmp(fname + len - 3, ".%d") == 0) 248 snprintf(fname + len - 2, 20, "%d", getpid()); 249 250 debug_file = fopen(fname, mode); 251 if (!debug_file) { 252 fprintf(stderr, "Cannot open debug file %s\n", 253 fname); 254 usage(); 255 } 256 free(fname); 257 } 258 259 static void 260 parse_debug_options(const char *argvalue) 261 { 262 const char *modules; 263 264 for (modules = argvalue; *modules; ++modules) { 265 switch (*modules) { 266 case '0': /* undocumented, only intended for tests */ 267 debug &= DEBUG_LINT; 268 break; 269 case 'A': 270 debug = ~(0|DEBUG_LINT); 271 break; 272 case 'a': 273 debug |= DEBUG_ARCH; 274 break; 275 case 'C': 276 debug |= DEBUG_CWD; 277 break; 278 case 'c': 279 debug |= DEBUG_COND; 280 break; 281 case 'd': 282 debug |= DEBUG_DIR; 283 break; 284 case 'e': 285 debug |= DEBUG_ERROR; 286 break; 287 case 'f': 288 debug |= DEBUG_FOR; 289 break; 290 case 'g': 291 if (modules[1] == '1') { 292 debug |= DEBUG_GRAPH1; 293 ++modules; 294 } 295 else if (modules[1] == '2') { 296 debug |= DEBUG_GRAPH2; 297 ++modules; 298 } 299 else if (modules[1] == '3') { 300 debug |= DEBUG_GRAPH3; 301 ++modules; 302 } 303 break; 304 case 'h': 305 debug |= DEBUG_HASH; 306 break; 307 case 'j': 308 debug |= DEBUG_JOB; 309 break; 310 case 'L': 311 debug |= DEBUG_LINT; 312 break; 313 case 'l': 314 debug |= DEBUG_LOUD; 315 break; 316 case 'M': 317 debug |= DEBUG_META; 318 break; 319 case 'm': 320 debug |= DEBUG_MAKE; 321 break; 322 case 'n': 323 debug |= DEBUG_SCRIPT; 324 break; 325 case 'p': 326 debug |= DEBUG_PARSE; 327 break; 328 case 's': 329 debug |= DEBUG_SUFF; 330 break; 331 case 't': 332 debug |= DEBUG_TARG; 333 break; 334 case 'V': 335 debugVflag = TRUE; 336 break; 337 case 'v': 338 debug |= DEBUG_VAR; 339 break; 340 case 'x': 341 debug |= DEBUG_SHELL; 342 break; 343 case 'F': 344 parse_debug_option_F(modules + 1); 345 goto debug_setbuf; 346 default: 347 (void)fprintf(stderr, 348 "%s: illegal argument to d option -- %c\n", 349 progname, *modules); 350 usage(); 351 } 352 } 353 debug_setbuf: 354 /* 355 * Make the debug_file unbuffered, and make 356 * stdout line buffered (unless debugfile == stdout). 357 */ 358 setvbuf(debug_file, NULL, _IONBF, 0); 359 if (debug_file != stdout) { 360 setvbuf(stdout, NULL, _IOLBF, 0); 361 } 362 } 363 364 /* 365 * does path contain any relative components 366 */ 367 static Boolean 368 is_relpath(const char *path) 369 { 370 const char *cp; 371 372 if (path[0] != '/') 373 return TRUE; 374 cp = path; 375 while ((cp = strstr(cp, "/.")) != NULL) { 376 cp += 2; 377 if (cp[0] == '/' || cp[0] == '\0') 378 return TRUE; 379 else if (cp[0] == '.') { 380 if (cp[1] == '/' || cp[1] == '\0') 381 return TRUE; 382 } 383 } 384 return FALSE; 385 } 386 387 static void 388 MainParseArgChdir(const char *argvalue) 389 { 390 struct stat sa, sb; 391 392 if (chdir(argvalue) == -1) { 393 (void)fprintf(stderr, "%s: chdir %s: %s\n", 394 progname, argvalue, strerror(errno)); 395 exit(1); 396 } 397 if (getcwd(curdir, MAXPATHLEN) == NULL) { 398 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 399 exit(2); 400 } 401 if (!is_relpath(argvalue) && 402 stat(argvalue, &sa) != -1 && 403 stat(curdir, &sb) != -1 && 404 sa.st_ino == sb.st_ino && 405 sa.st_dev == sb.st_dev) 406 strncpy(curdir, argvalue, MAXPATHLEN); 407 ignorePWD = TRUE; 408 } 409 410 static void 411 MainParseArgJobsInternal(const char *argvalue) 412 { 413 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 414 (void)fprintf(stderr, 415 "%s: internal error -- J option malformed (%s)\n", 416 progname, argvalue); 417 usage(); 418 } 419 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 420 (fcntl(jp_1, F_GETFD, 0) < 0)) { 421 #if 0 422 (void)fprintf(stderr, 423 "%s: ###### warning -- J descriptors were closed!\n", 424 progname); 425 exit(2); 426 #endif 427 jp_0 = -1; 428 jp_1 = -1; 429 compatMake = TRUE; 430 } else { 431 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 432 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 433 } 434 } 435 436 static void 437 MainParseArgJobs(const char *argvalue) 438 { 439 char *p; 440 441 forceJobs = TRUE; 442 maxJobs = (int)strtol(argvalue, &p, 0); 443 if (*p != '\0' || maxJobs < 1) { 444 (void)fprintf(stderr, 445 "%s: illegal argument to -j -- must be positive integer!\n", 446 progname); 447 exit(1); /* XXX: why not 2? */ 448 } 449 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 450 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 451 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL); 452 maxJobTokens = maxJobs; 453 } 454 455 static void 456 MainParseArgSysInc(const char *argvalue) 457 { 458 /* look for magic parent directory search string */ 459 if (strncmp(".../", argvalue, 4) == 0) { 460 char *found_path = Dir_FindHereOrAbove(curdir, argvalue + 4); 461 if (found_path == NULL) 462 return; 463 (void)Dir_AddDir(sysIncPath, found_path); 464 free(found_path); 465 } else { 466 (void)Dir_AddDir(sysIncPath, argvalue); 467 } 468 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 469 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 470 } 471 472 static Boolean 473 MainParseArg(char c, const char *argvalue) 474 { 475 switch (c) { 476 case '\0': 477 break; 478 case 'B': 479 compatMake = TRUE; 480 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 481 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL); 482 break; 483 case 'C': 484 MainParseArgChdir(argvalue); 485 break; 486 case 'D': 487 if (argvalue[0] == '\0') return FALSE; 488 Var_Set(argvalue, "1", VAR_GLOBAL); 489 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 490 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 491 break; 492 case 'I': 493 Parse_AddIncludeDir(argvalue); 494 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 495 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 496 break; 497 case 'J': 498 MainParseArgJobsInternal(argvalue); 499 break; 500 case 'N': 501 noExecute = TRUE; 502 noRecursiveExecute = TRUE; 503 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 504 break; 505 case 'S': 506 keepgoing = FALSE; 507 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 508 break; 509 case 'T': 510 tracefile = bmake_strdup(argvalue); 511 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 512 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 513 break; 514 case 'V': 515 case 'v': 516 printVars = c == 'v' ? EXPAND_VARS : COMPAT_VARS; 517 Lst_Append(variables, bmake_strdup(argvalue)); 518 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 519 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 520 break; 521 case 'W': 522 parseWarnFatal = TRUE; 523 break; 524 case 'X': 525 varNoExportEnv = TRUE; 526 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 527 break; 528 case 'd': 529 /* If '-d-opts' don't pass to children */ 530 if (argvalue[0] == '-') 531 argvalue++; 532 else { 533 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 534 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 535 } 536 parse_debug_options(argvalue); 537 break; 538 case 'e': 539 checkEnvFirst = TRUE; 540 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 541 break; 542 case 'f': 543 Lst_Append(makefiles, bmake_strdup(argvalue)); 544 break; 545 case 'i': 546 ignoreErrors = TRUE; 547 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 548 break; 549 case 'j': 550 MainParseArgJobs(argvalue); 551 break; 552 case 'k': 553 keepgoing = TRUE; 554 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 555 break; 556 case 'm': 557 MainParseArgSysInc(argvalue); 558 break; 559 case 'n': 560 noExecute = TRUE; 561 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 562 break; 563 case 'q': 564 queryFlag = TRUE; 565 /* Kind of nonsensical, wot? */ 566 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 567 break; 568 case 'r': 569 noBuiltins = TRUE; 570 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 571 break; 572 case 's': 573 beSilent = TRUE; 574 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 575 break; 576 case 't': 577 touchFlag = TRUE; 578 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 579 break; 580 case 'w': 581 enterFlag = TRUE; 582 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 583 break; 584 default: 585 case '?': 586 usage(); 587 } 588 return TRUE; 589 } 590 591 /* Parse the given arguments. Called from main() and from 592 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 593 * 594 * The arguments must be treated as read-only and will be freed after the 595 * call. 596 * 597 * XXX: Deal with command line overriding .MAKEFLAGS in makefile */ 598 static void 599 MainParseArgs(int argc, char **argv) 600 { 601 char c; 602 int arginc; 603 char *argvalue; 604 char *optscan; 605 Boolean inOption, dashDash = FALSE; 606 607 const char *optspecs = "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w"; 608 /* Can't actually use getopt(3) because rescanning is not portable */ 609 610 rearg: 611 inOption = FALSE; 612 optscan = NULL; 613 while (argc > 1) { 614 const char *optspec; 615 if (!inOption) 616 optscan = argv[1]; 617 c = *optscan++; 618 arginc = 0; 619 if (inOption) { 620 if (c == '\0') { 621 ++argv; 622 --argc; 623 inOption = FALSE; 624 continue; 625 } 626 } else { 627 if (c != '-' || dashDash) 628 break; 629 inOption = TRUE; 630 c = *optscan++; 631 } 632 /* '-' found at some earlier point */ 633 optspec = strchr(optspecs, c); 634 if (c != '\0' && optspec != NULL && optspec[1] == ':') { 635 /* -<something> found, and <something> should have an arg */ 636 inOption = FALSE; 637 arginc = 1; 638 argvalue = optscan; 639 if (*argvalue == '\0') { 640 if (argc < 3) 641 goto noarg; 642 argvalue = argv[2]; 643 arginc = 2; 644 } 645 } else { 646 argvalue = NULL; 647 } 648 switch (c) { 649 case '\0': 650 arginc = 1; 651 inOption = FALSE; 652 break; 653 case '-': 654 dashDash = TRUE; 655 break; 656 default: 657 if (!MainParseArg(c, argvalue)) 658 goto noarg; 659 } 660 argv += arginc; 661 argc -= arginc; 662 } 663 664 oldVars = TRUE; 665 666 /* 667 * See if the rest of the arguments are variable assignments and 668 * perform them if so. Else take them to be targets and stuff them 669 * on the end of the "create" list. 670 */ 671 for (; argc > 1; ++argv, --argc) { 672 VarAssign var; 673 if (Parse_IsVar(argv[1], &var)) { 674 Parse_DoVar(&var, VAR_CMD); 675 } else { 676 if (!*argv[1]) 677 Punt("illegal (null) argument."); 678 if (*argv[1] == '-' && !dashDash) 679 goto rearg; 680 Lst_Append(create, bmake_strdup(argv[1])); 681 } 682 } 683 684 return; 685 noarg: 686 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 687 progname, c); 688 usage(); 689 } 690 691 /* Break a line of arguments into words and parse them. 692 * 693 * Used when a .MFLAGS or .MAKEFLAGS target is encountered during parsing and 694 * by main() when reading the MAKEFLAGS environment variable. */ 695 void 696 Main_ParseArgLine(const char *line) 697 { 698 Words words; 699 char *p1; 700 const char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 701 char *buf; 702 703 if (line == NULL) 704 return; 705 for (; *line == ' '; ++line) 706 continue; 707 if (!*line) 708 return; 709 710 buf = str_concat3(argv0, " ", line); 711 free(p1); 712 713 words = Str_Words(buf, TRUE); 714 if (words.words == NULL) { 715 Error("Unterminated quoted string [%s]", buf); 716 free(buf); 717 return; 718 } 719 free(buf); 720 MainParseArgs((int)words.len, words.words); 721 722 Words_Free(words); 723 } 724 725 Boolean 726 Main_SetObjdir(const char *fmt, ...) 727 { 728 struct stat sb; 729 char *path; 730 char buf[MAXPATHLEN + 1]; 731 char buf2[MAXPATHLEN + 1]; 732 Boolean rc = FALSE; 733 va_list ap; 734 735 va_start(ap, fmt); 736 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 737 va_end(ap); 738 739 if (path[0] != '/') { 740 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 741 path = buf2; 742 } 743 744 /* look for the directory and try to chdir there */ 745 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 746 if (chdir(path)) { 747 (void)fprintf(stderr, "make warning: %s: %s.\n", 748 path, strerror(errno)); 749 } else { 750 snprintf(objdir, sizeof objdir, "%s", path); 751 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 752 setenv("PWD", objdir, 1); 753 Dir_InitDot(); 754 purge_cached_realpaths(); 755 rc = TRUE; 756 if (enterFlag && strcmp(objdir, curdir) != 0) 757 enterFlagObj = TRUE; 758 } 759 } 760 761 return rc; 762 } 763 764 static Boolean 765 Main_SetVarObjdir(const char *var, const char *suffix) 766 { 767 char *path_freeIt; 768 const char *path = Var_Value(var, VAR_CMD, &path_freeIt); 769 const char *xpath; 770 char *xpath_freeIt; 771 772 if (path == NULL || path[0] == '\0') { 773 bmake_free(path_freeIt); 774 return FALSE; 775 } 776 777 /* expand variable substitutions */ 778 xpath = path; 779 xpath_freeIt = NULL; 780 if (strchr(path, '$') != 0) { 781 (void)Var_Subst(path, VAR_GLOBAL, VARE_WANTRES, &xpath_freeIt); 782 /* TODO: handle errors */ 783 xpath = xpath_freeIt; 784 } 785 786 (void)Main_SetObjdir("%s%s", xpath, suffix); 787 788 bmake_free(xpath_freeIt); 789 bmake_free(path_freeIt); 790 return TRUE; 791 } 792 793 /* Read and parse the makefile. 794 * Return TRUE if reading the makefile succeeded, for Lst_Find. */ 795 static Boolean 796 ReadMakefileSucceeded(const void *fname, const void *unused) 797 { 798 return ReadMakefile(fname) == 0; 799 } 800 801 /* Read and parse the makefile. 802 * Return TRUE if reading the makefile failed, for Lst_Find. */ 803 static Boolean 804 ReadMakefileFailed(const void *fname, const void *unused) 805 { 806 return ReadMakefile(fname) != 0; 807 } 808 809 int 810 str2Lst_Append(StringList *lp, char *str, const char *sep) 811 { 812 char *cp; 813 int n; 814 815 if (!sep) 816 sep = " \t"; 817 818 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 819 Lst_Append(lp, cp); 820 n++; 821 } 822 return n; 823 } 824 825 #ifdef SIGINFO 826 /*ARGSUSED*/ 827 static void 828 siginfo(int signo MAKE_ATTR_UNUSED) 829 { 830 char dir[MAXPATHLEN]; 831 char str[2 * MAXPATHLEN]; 832 int len; 833 if (getcwd(dir, sizeof(dir)) == NULL) 834 return; 835 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 836 if (len > 0) 837 (void)write(STDERR_FILENO, str, (size_t)len); 838 } 839 #endif 840 841 /* 842 * Allow makefiles some control over the mode we run in. 843 */ 844 void 845 MakeMode(const char *mode) 846 { 847 char *mode_freeIt = NULL; 848 849 if (mode == NULL) { 850 (void)Var_Subst("${" MAKE_MODE ":tl}", 851 VAR_GLOBAL, VARE_WANTRES, &mode_freeIt); 852 /* TODO: handle errors */ 853 mode = mode_freeIt; 854 } 855 856 if (mode[0] != '\0') { 857 if (strstr(mode, "compat")) { 858 compatMake = TRUE; 859 forceJobs = FALSE; 860 } 861 #if USE_META 862 if (strstr(mode, "meta")) 863 meta_mode_init(mode); 864 #endif 865 } 866 867 free(mode_freeIt); 868 } 869 870 static void 871 doPrintVars(void) 872 { 873 StringListNode *ln; 874 Boolean expandVars; 875 876 if (printVars == EXPAND_VARS) 877 expandVars = TRUE; 878 else if (debugVflag) 879 expandVars = FALSE; 880 else 881 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 882 883 for (ln = variables->first; ln != NULL; ln = ln->next) { 884 const char *var = ln->datum; 885 const char *value; 886 char *p1; 887 888 if (strchr(var, '$')) { 889 (void)Var_Subst(var, VAR_GLOBAL, VARE_WANTRES, &p1); 890 /* TODO: handle errors */ 891 value = p1; 892 } else if (expandVars) { 893 char *expr = str_concat3("${", var, "}"); 894 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &p1); 895 /* TODO: handle errors */ 896 value = p1; 897 free(expr); 898 } else { 899 value = Var_Value(var, VAR_GLOBAL, &p1); 900 } 901 printf("%s\n", value ? value : ""); 902 bmake_free(p1); 903 } 904 } 905 906 static Boolean 907 runTargets(void) 908 { 909 GNodeList *targs; /* target nodes to create -- passed to Make_Init */ 910 Boolean outOfDate; /* FALSE if all targets up to date */ 911 912 /* 913 * Have now read the entire graph and need to make a list of 914 * targets to create. If none was given on the command line, 915 * we consult the parsing module to find the main target(s) 916 * to create. 917 */ 918 if (Lst_IsEmpty(create)) 919 targs = Parse_MainName(); 920 else 921 targs = Targ_FindList(create); 922 923 if (!compatMake) { 924 /* 925 * Initialize job module before traversing the graph 926 * now that any .BEGIN and .END targets have been read. 927 * This is done only if the -q flag wasn't given 928 * (to prevent the .BEGIN from being executed should 929 * it exist). 930 */ 931 if (!queryFlag) { 932 Job_Init(); 933 jobsRunning = TRUE; 934 } 935 936 /* Traverse the graph, checking on all the targets */ 937 outOfDate = Make_Run(targs); 938 } else { 939 /* 940 * Compat_Init will take care of creating all the 941 * targets as well as initializing the module. 942 */ 943 Compat_Run(targs); 944 outOfDate = FALSE; 945 } 946 Lst_Free(targs); 947 return outOfDate; 948 } 949 950 /* 951 * Set up the .TARGETS variable to contain the list of targets to be 952 * created. If none specified, make the variable empty -- the parser 953 * will fill the thing in with the default or .MAIN target. 954 */ 955 static void 956 InitVarTargets(void) 957 { 958 StringListNode *ln; 959 960 if (Lst_IsEmpty(create)) { 961 Var_Set(".TARGETS", "", VAR_GLOBAL); 962 return; 963 } 964 965 for (ln = create->first; ln != NULL; ln = ln->next) { 966 char *name = ln->datum; 967 Var_Append(".TARGETS", name, VAR_GLOBAL); 968 } 969 } 970 971 static const char * 972 init_machine(const struct utsname *utsname) 973 { 974 const char *machine = getenv("MACHINE"); 975 if (machine != NULL) 976 return machine; 977 978 #ifdef MAKE_NATIVE 979 return utsname->machine; 980 #else 981 #ifdef MAKE_MACHINE 982 return MAKE_MACHINE; 983 #else 984 return "unknown"; 985 #endif 986 #endif 987 } 988 989 static const char * 990 init_machine_arch(void) 991 { 992 const char *env = getenv("MACHINE_ARCH"); 993 if (env != NULL) 994 return env; 995 996 #ifdef MAKE_NATIVE 997 { 998 struct utsname utsname; 999 static char machine_arch_buf[sizeof(utsname.machine)]; 1000 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1001 size_t len = sizeof(machine_arch_buf); 1002 1003 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1004 &len, NULL, 0) < 0) { 1005 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1006 strerror(errno)); 1007 exit(2); 1008 } 1009 1010 return machine_arch_buf; 1011 } 1012 #else 1013 #ifndef MACHINE_ARCH 1014 #ifdef MAKE_MACHINE_ARCH 1015 return MAKE_MACHINE_ARCH; 1016 #else 1017 return "unknown"; 1018 #endif 1019 #else 1020 return MACHINE_ARCH; 1021 #endif 1022 #endif 1023 } 1024 1025 /*- 1026 * main -- 1027 * The main function, for obvious reasons. Initializes variables 1028 * and a few modules, then parses the arguments give it in the 1029 * environment and on the command line. Reads the system makefile 1030 * followed by either Makefile, makefile or the file given by the 1031 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 1032 * flags it has received by then uses either the Make or the Compat 1033 * module to create the initial list of targets. 1034 * 1035 * Results: 1036 * If -q was given, exits -1 if anything was out-of-date. Else it exits 1037 * 0. 1038 * 1039 * Side Effects: 1040 * The program exits when done. Targets are created. etc. etc. etc. 1041 */ 1042 int 1043 main(int argc, char **argv) 1044 { 1045 Boolean outOfDate; /* FALSE if all targets up to date */ 1046 struct stat sb, sa; 1047 char *p1, *path; 1048 char mdpath[MAXPATHLEN]; 1049 const char *machine; 1050 const char *machine_arch; 1051 char *syspath = getenv("MAKESYSPATH"); 1052 StringList *sysMkPath; /* Path of sys.mk */ 1053 char *cp = NULL, *start; 1054 /* avoid faults on read-only strings */ 1055 static char defsyspath[] = _PATH_DEFSYSPATH; 1056 struct timeval rightnow; /* to initialize random seed */ 1057 struct utsname utsname; 1058 1059 /* default to writing debug to stderr */ 1060 debug_file = stderr; 1061 1062 #ifdef SIGINFO 1063 (void)bmake_signal(SIGINFO, siginfo); 1064 #endif 1065 /* 1066 * Set the seed to produce a different random sequence 1067 * on each program execution. 1068 */ 1069 gettimeofday(&rightnow, NULL); 1070 srandom((unsigned int)(rightnow.tv_sec + rightnow.tv_usec)); 1071 1072 if ((progname = strrchr(argv[0], '/')) != NULL) 1073 progname++; 1074 else 1075 progname = argv[0]; 1076 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 1077 /* 1078 * get rid of resource limit on file descriptors 1079 */ 1080 { 1081 struct rlimit rl; 1082 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1083 rl.rlim_cur != rl.rlim_max) { 1084 rl.rlim_cur = rl.rlim_max; 1085 (void)setrlimit(RLIMIT_NOFILE, &rl); 1086 } 1087 } 1088 #endif 1089 1090 if (uname(&utsname) == -1) { 1091 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1092 strerror(errno)); 1093 exit(2); 1094 } 1095 1096 /* 1097 * Get the name of this type of MACHINE from utsname 1098 * so we can share an executable for similar machines. 1099 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1100 * 1101 * Note that both MACHINE and MACHINE_ARCH are decided at 1102 * run-time. 1103 */ 1104 machine = init_machine(&utsname); 1105 machine_arch = init_machine_arch(); 1106 1107 myPid = getpid(); /* remember this for vFork() */ 1108 1109 /* 1110 * Just in case MAKEOBJDIR wants us to do something tricky. 1111 */ 1112 Var_Init(); /* Initialize the lists of variables for 1113 * parsing arguments */ 1114 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL); 1115 Var_Set("MACHINE", machine, VAR_GLOBAL); 1116 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1117 #ifdef MAKE_VERSION 1118 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1119 #endif 1120 Var_Set(".newline", "\n", VAR_GLOBAL); /* handy for :@ loops */ 1121 /* 1122 * This is the traditional preference for makefiles. 1123 */ 1124 #ifndef MAKEFILE_PREFERENCE_LIST 1125 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1126 #endif 1127 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1128 VAR_GLOBAL); 1129 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1130 1131 create = Lst_Init(); 1132 makefiles = Lst_Init(); 1133 printVars = 0; 1134 debugVflag = FALSE; 1135 variables = Lst_Init(); 1136 beSilent = FALSE; /* Print commands as executed */ 1137 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1138 noExecute = FALSE; /* Execute all commands */ 1139 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1140 keepgoing = FALSE; /* Stop on error */ 1141 allPrecious = FALSE; /* Remove targets when interrupted */ 1142 deleteOnError = FALSE; /* Historical default behavior */ 1143 queryFlag = FALSE; /* This is not just a check-run */ 1144 noBuiltins = FALSE; /* Read the built-in rules */ 1145 touchFlag = FALSE; /* Actually update targets */ 1146 debug = 0; /* No debug verbosity, please. */ 1147 jobsRunning = FALSE; 1148 1149 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1150 maxJobTokens = maxJobs; 1151 compatMake = FALSE; /* No compat mode */ 1152 ignorePWD = FALSE; 1153 1154 /* 1155 * Initialize the parsing, directory and variable modules to prepare 1156 * for the reading of inclusion paths and variable settings on the 1157 * command line 1158 */ 1159 1160 /* 1161 * Initialize various variables. 1162 * MAKE also gets this name, for compatibility 1163 * .MAKEFLAGS gets set to the empty string just in case. 1164 * MFLAGS also gets initialized empty, for compatibility. 1165 */ 1166 Parse_Init(); 1167 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1168 /* 1169 * Leave alone if it is an absolute path, or if it does 1170 * not contain a '/' in which case we need to find it in 1171 * the path, like execvp(3) and the shells do. 1172 */ 1173 p1 = argv[0]; 1174 } else { 1175 /* 1176 * A relative path, canonicalize it. 1177 */ 1178 p1 = cached_realpath(argv[0], mdpath); 1179 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1180 p1 = argv[0]; /* realpath failed */ 1181 } 1182 } 1183 Var_Set("MAKE", p1, VAR_GLOBAL); 1184 Var_Set(".MAKE", p1, VAR_GLOBAL); 1185 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1186 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1187 Var_Set("MFLAGS", "", VAR_GLOBAL); 1188 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1189 /* some makefiles need to know this */ 1190 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 1191 1192 /* 1193 * Set some other useful macros 1194 */ 1195 { 1196 char tmp[64], *ep; 1197 1198 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1199 if (makelevel < 0) 1200 makelevel = 0; 1201 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1202 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL); 1203 snprintf(tmp, sizeof(tmp), "%u", myPid); 1204 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1205 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1206 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 1207 } 1208 if (makelevel > 0) { 1209 char pn[1024]; 1210 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1211 progname = bmake_strdup(pn); 1212 } 1213 1214 #ifdef USE_META 1215 meta_init(); 1216 #endif 1217 Dir_Init(); 1218 1219 /* 1220 * First snag any flags out of the MAKE environment variable. 1221 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1222 * in a different format). 1223 */ 1224 #ifdef POSIX 1225 p1 = explode(getenv("MAKEFLAGS")); 1226 Main_ParseArgLine(p1); 1227 free(p1); 1228 #else 1229 Main_ParseArgLine(getenv("MAKE")); 1230 #endif 1231 1232 /* 1233 * Find where we are (now). 1234 * We take care of PWD for the automounter below... 1235 */ 1236 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1237 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1238 progname, strerror(errno)); 1239 exit(2); 1240 } 1241 1242 MainParseArgs(argc, argv); 1243 1244 if (enterFlag) 1245 printf("%s: Entering directory `%s'\n", progname, curdir); 1246 1247 /* 1248 * Verify that cwd is sane. 1249 */ 1250 if (stat(curdir, &sa) == -1) { 1251 (void)fprintf(stderr, "%s: %s: %s.\n", 1252 progname, curdir, strerror(errno)); 1253 exit(2); 1254 } 1255 1256 /* 1257 * All this code is so that we know where we are when we start up 1258 * on a different machine with pmake. 1259 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1260 * since the value of curdir can vary depending on how we got 1261 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1262 * or via subdir.mk in which case its likely a shell which does 1263 * not provide it. 1264 * So, to stop it breaking this case only, we ignore PWD if 1265 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1266 */ 1267 #ifndef NO_PWD_OVERRIDE 1268 if (!ignorePWD) { 1269 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1270 1271 if ((pwd = getenv("PWD")) != NULL && 1272 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1273 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1274 VAR_CMD, &ptmp2); 1275 1276 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1277 if (stat(pwd, &sb) == 0 && 1278 sa.st_ino == sb.st_ino && 1279 sa.st_dev == sb.st_dev) 1280 (void)strncpy(curdir, pwd, MAXPATHLEN); 1281 } 1282 } 1283 bmake_free(ptmp1); 1284 bmake_free(ptmp2); 1285 } 1286 #endif 1287 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 1288 1289 /* 1290 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1291 * MAKEOBJDIR is set in the environment, try only that value 1292 * and fall back to .CURDIR if it does not exist. 1293 * 1294 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1295 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1296 * of these paths exist, just use .CURDIR. 1297 */ 1298 Dir_InitDir(curdir); 1299 (void)Main_SetObjdir("%s", curdir); 1300 1301 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1302 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1303 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1304 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1305 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1306 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1307 1308 /* 1309 * Initialize archive, target and suffix modules in preparation for 1310 * parsing the makefile(s) 1311 */ 1312 Arch_Init(); 1313 Targ_Init(); 1314 Suff_Init(); 1315 Trace_Init(tracefile); 1316 1317 DEFAULT = NULL; 1318 (void)time(&now); 1319 1320 Trace_Log(MAKESTART, NULL); 1321 1322 InitVarTargets(); 1323 1324 /* 1325 * If no user-supplied system path was given (through the -m option) 1326 * add the directories from the DEFSYSPATH (more than one may be given 1327 * as dir1:...:dirn) to the system include path. 1328 */ 1329 /* XXX: mismatch: the -m option sets sysIncPath, not syspath */ 1330 if (syspath == NULL || syspath[0] == '\0') 1331 syspath = defsyspath; 1332 else 1333 syspath = bmake_strdup(syspath); 1334 1335 for (start = syspath; *start != '\0'; start = cp) { 1336 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1337 continue; 1338 if (*cp == ':') { 1339 *cp++ = '\0'; 1340 } 1341 /* look for magic parent directory search string */ 1342 if (strncmp(".../", start, 4) != 0) { 1343 (void)Dir_AddDir(defIncPath, start); 1344 } else { 1345 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1346 if (dir != NULL) { 1347 (void)Dir_AddDir(defIncPath, dir); 1348 free(dir); 1349 } 1350 } 1351 } 1352 if (syspath != defsyspath) 1353 free(syspath); 1354 1355 /* 1356 * Read in the built-in rules first, followed by the specified 1357 * makefiles, or the default makefile and Makefile, in that order, 1358 * if no makefiles were given on the command line. 1359 */ 1360 if (!noBuiltins) { 1361 StringListNode *ln; 1362 1363 sysMkPath = Lst_Init(); 1364 Dir_Expand(_PATH_DEFSYSMK, 1365 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1366 sysMkPath); 1367 if (Lst_IsEmpty(sysMkPath)) 1368 Fatal("%s: no system rules (%s).", progname, 1369 _PATH_DEFSYSMK); 1370 ln = Lst_Find(sysMkPath, ReadMakefileSucceeded, NULL); 1371 if (ln == NULL) 1372 Fatal("%s: cannot open %s.", progname, 1373 (char *)LstNode_Datum(Lst_First(sysMkPath))); 1374 } 1375 1376 if (!Lst_IsEmpty(makefiles)) { 1377 StringListNode *ln; 1378 1379 ln = Lst_Find(makefiles, ReadMakefileFailed, NULL); 1380 if (ln != NULL) 1381 Fatal("%s: cannot open %s.", progname, 1382 (char *)LstNode_Datum(ln)); 1383 } else { 1384 (void)Var_Subst("${" MAKEFILE_PREFERENCE "}", 1385 VAR_CMD, VARE_WANTRES, &p1); 1386 /* TODO: handle errors */ 1387 (void)str2Lst_Append(makefiles, p1, NULL); 1388 (void)Lst_Find(makefiles, ReadMakefileSucceeded, NULL); 1389 free(p1); 1390 } 1391 1392 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1393 if (!noBuiltins || !printVars) { 1394 (void)Var_Subst("${.MAKE.DEPENDFILE:T}", 1395 VAR_CMD, VARE_WANTRES, &makeDependfile); 1396 /* TODO: handle errors */ 1397 doing_depend = TRUE; 1398 (void)ReadMakefile(makeDependfile); 1399 doing_depend = FALSE; 1400 } 1401 1402 if (enterFlagObj) 1403 printf("%s: Entering directory `%s'\n", progname, objdir); 1404 1405 MakeMode(NULL); 1406 1407 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1408 bmake_free(p1); 1409 1410 if (!forceJobs && !compatMake && 1411 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1412 char *value; 1413 int n; 1414 1415 (void)Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES, &value); 1416 /* TODO: handle errors */ 1417 n = (int)strtol(value, NULL, 0); 1418 if (n < 1) { 1419 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1420 progname); 1421 exit(1); 1422 } 1423 if (n != maxJobs) { 1424 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1425 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1426 } 1427 maxJobs = n; 1428 maxJobTokens = maxJobs; 1429 forceJobs = TRUE; 1430 free(value); 1431 } 1432 1433 /* 1434 * Be compatible if user did not specify -j and did not explicitly 1435 * turned compatibility on 1436 */ 1437 if (!compatMake && !forceJobs) { 1438 compatMake = TRUE; 1439 } 1440 1441 if (!compatMake) 1442 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1443 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1444 jp_0, jp_1, maxJobs, maxJobTokens, compatMake ? 1 : 0); 1445 1446 if (!printVars) 1447 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1448 1449 1450 /* 1451 * For compatibility, look at the directories in the VPATH variable 1452 * and add them to the search path, if the variable is defined. The 1453 * variable's value is in the same format as the PATH envariable, i.e. 1454 * <directory>:<directory>:<directory>... 1455 */ 1456 if (Var_Exists("VPATH", VAR_CMD)) { 1457 char *vpath, savec; 1458 /* 1459 * GCC stores string constants in read-only memory, but 1460 * Var_Subst will want to write this thing, so store it 1461 * in an array 1462 */ 1463 static char VPATH[] = "${VPATH}"; 1464 1465 (void)Var_Subst(VPATH, VAR_CMD, VARE_WANTRES, &vpath); 1466 /* TODO: handle errors */ 1467 path = vpath; 1468 do { 1469 /* skip to end of directory */ 1470 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1471 continue; 1472 /* Save terminator character so know when to stop */ 1473 savec = *cp; 1474 *cp = '\0'; 1475 /* Add directory to search path */ 1476 (void)Dir_AddDir(dirSearchPath, path); 1477 *cp = savec; 1478 path = cp + 1; 1479 } while (savec == ':'); 1480 free(vpath); 1481 } 1482 1483 /* 1484 * Now that all search paths have been read for suffixes et al, it's 1485 * time to add the default search path to their lists... 1486 */ 1487 Suff_DoPaths(); 1488 1489 /* 1490 * Propagate attributes through :: dependency lists. 1491 */ 1492 Targ_Propagate(); 1493 1494 /* print the initial graph, if the user requested it */ 1495 if (DEBUG(GRAPH1)) 1496 Targ_PrintGraph(1); 1497 1498 /* print the values of any variables requested by the user */ 1499 if (printVars) { 1500 doPrintVars(); 1501 outOfDate = FALSE; 1502 } else { 1503 outOfDate = runTargets(); 1504 } 1505 1506 #ifdef CLEANUP 1507 Lst_Free(variables); 1508 Lst_Free(makefiles); 1509 Lst_Destroy(create, free); 1510 #endif 1511 1512 /* print the graph now it's been processed if the user requested it */ 1513 if (DEBUG(GRAPH2)) 1514 Targ_PrintGraph(2); 1515 1516 Trace_Log(MAKEEND, 0); 1517 1518 if (enterFlagObj) 1519 printf("%s: Leaving directory `%s'\n", progname, objdir); 1520 if (enterFlag) 1521 printf("%s: Leaving directory `%s'\n", progname, curdir); 1522 1523 #ifdef USE_META 1524 meta_finish(); 1525 #endif 1526 Suff_End(); 1527 Targ_End(); 1528 Arch_End(); 1529 Var_End(); 1530 Parse_End(); 1531 Dir_End(); 1532 Job_End(); 1533 Trace_End(); 1534 1535 return outOfDate ? 1 : 0; 1536 } 1537 1538 /* Open and parse the given makefile, with all its side effects. 1539 * 1540 * Results: 1541 * 0 if ok. -1 if couldn't open file. 1542 */ 1543 static int 1544 ReadMakefile(const char *fname) 1545 { 1546 int fd; 1547 char *name, *path = NULL; 1548 1549 if (!strcmp(fname, "-")) { 1550 Parse_File(NULL /*stdin*/, -1); 1551 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1552 } else { 1553 /* if we've chdir'd, rebuild the path name */ 1554 if (strcmp(curdir, objdir) && *fname != '/') { 1555 path = str_concat3(curdir, "/", fname); 1556 fd = open(path, O_RDONLY); 1557 if (fd != -1) { 1558 fname = path; 1559 goto found; 1560 } 1561 free(path); 1562 1563 /* If curdir failed, try objdir (ala .depend) */ 1564 path = str_concat3(objdir, "/", fname); 1565 fd = open(path, O_RDONLY); 1566 if (fd != -1) { 1567 fname = path; 1568 goto found; 1569 } 1570 } else { 1571 fd = open(fname, O_RDONLY); 1572 if (fd != -1) 1573 goto found; 1574 } 1575 /* look in -I and system include directories. */ 1576 name = Dir_FindFile(fname, parseIncPath); 1577 if (!name) 1578 name = Dir_FindFile(fname, 1579 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1580 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1581 free(name); 1582 free(path); 1583 return -1; 1584 } 1585 fname = name; 1586 /* 1587 * set the MAKEFILE variable desired by System V fans -- the 1588 * placement of the setting here means it gets set to the last 1589 * makefile specified, as it is set by SysV make. 1590 */ 1591 found: 1592 if (!doing_depend) 1593 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1594 Parse_File(fname, fd); 1595 } 1596 free(path); 1597 return 0; 1598 } 1599 1600 1601 1602 /*- 1603 * Cmd_Exec -- 1604 * Execute the command in cmd, and return the output of that command 1605 * in a string. In the output, newlines are replaced with spaces. 1606 * 1607 * Results: 1608 * A string containing the output of the command, or the empty string. 1609 * *errfmt returns a format string describing the command failure, 1610 * if any, using a single %s conversion specification. 1611 * 1612 * Side Effects: 1613 * The string must be freed by the caller. 1614 */ 1615 char * 1616 Cmd_Exec(const char *cmd, const char **errfmt) 1617 { 1618 const char *args[4]; /* Args for invoking the shell */ 1619 int fds[2]; /* Pipe streams */ 1620 int cpid; /* Child PID */ 1621 int pid; /* PID from wait() */ 1622 int status; /* command exit status */ 1623 Buffer buf; /* buffer to store the result */ 1624 ssize_t bytes_read; 1625 char *res; /* result */ 1626 size_t res_len; 1627 char *cp; 1628 int savederr; /* saved errno */ 1629 1630 *errfmt = NULL; 1631 1632 if (!shellName) 1633 Shell_Init(); 1634 /* 1635 * Set up arguments for shell 1636 */ 1637 args[0] = shellName; 1638 args[1] = "-c"; 1639 args[2] = cmd; 1640 args[3] = NULL; 1641 1642 /* 1643 * Open a pipe for fetching its output 1644 */ 1645 if (pipe(fds) == -1) { 1646 *errfmt = "Couldn't create pipe for \"%s\""; 1647 goto bad; 1648 } 1649 1650 /* 1651 * Fork 1652 */ 1653 switch (cpid = vFork()) { 1654 case 0: 1655 /* 1656 * Close input side of pipe 1657 */ 1658 (void)close(fds[0]); 1659 1660 /* 1661 * Duplicate the output stream to the shell's output, then 1662 * shut the extra thing down. Note we don't fetch the error 1663 * stream...why not? Why? 1664 */ 1665 (void)dup2(fds[1], 1); 1666 (void)close(fds[1]); 1667 1668 Var_ExportVars(); 1669 1670 (void)execv(shellPath, UNCONST(args)); 1671 _exit(1); 1672 /*NOTREACHED*/ 1673 1674 case -1: 1675 *errfmt = "Couldn't exec \"%s\""; 1676 goto bad; 1677 1678 default: 1679 /* 1680 * No need for the writing half 1681 */ 1682 (void)close(fds[1]); 1683 1684 savederr = 0; 1685 Buf_Init(&buf, 0); 1686 1687 do { 1688 char result[BUFSIZ]; 1689 bytes_read = read(fds[0], result, sizeof(result)); 1690 if (bytes_read > 0) 1691 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1692 } 1693 while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1694 if (bytes_read == -1) 1695 savederr = errno; 1696 1697 /* 1698 * Close the input side of the pipe. 1699 */ 1700 (void)close(fds[0]); 1701 1702 /* 1703 * Wait for the process to exit. 1704 */ 1705 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1706 JobReapChild(pid, status, FALSE); 1707 continue; 1708 } 1709 res_len = Buf_Len(&buf); 1710 res = Buf_Destroy(&buf, FALSE); 1711 1712 if (savederr != 0) 1713 *errfmt = "Couldn't read shell's output for \"%s\""; 1714 1715 if (WIFSIGNALED(status)) 1716 *errfmt = "\"%s\" exited on a signal"; 1717 else if (WEXITSTATUS(status) != 0) 1718 *errfmt = "\"%s\" returned non-zero status"; 1719 1720 /* Convert newlines to spaces. A final newline is just stripped */ 1721 if (res_len > 0 && res[res_len - 1] == '\n') 1722 res[res_len - 1] = '\0'; 1723 for (cp = res; *cp != '\0'; cp++) 1724 if (*cp == '\n') 1725 *cp = ' '; 1726 break; 1727 } 1728 return res; 1729 bad: 1730 return bmake_strdup(""); 1731 } 1732 1733 /* Print a printf-style error message. 1734 * 1735 * This error message has no consequences, in particular it does not affect 1736 * the exit status. */ 1737 void 1738 Error(const char *fmt, ...) 1739 { 1740 va_list ap; 1741 FILE *err_file; 1742 1743 err_file = debug_file; 1744 if (err_file == stdout) 1745 err_file = stderr; 1746 (void)fflush(stdout); 1747 for (;;) { 1748 va_start(ap, fmt); 1749 fprintf(err_file, "%s: ", progname); 1750 (void)vfprintf(err_file, fmt, ap); 1751 va_end(ap); 1752 (void)fprintf(err_file, "\n"); 1753 (void)fflush(err_file); 1754 if (err_file == stderr) 1755 break; 1756 err_file = stderr; 1757 } 1758 } 1759 1760 /* Produce a Fatal error message, then exit immediately. 1761 * 1762 * If jobs are running, waits for them to finish. */ 1763 void 1764 Fatal(const char *fmt, ...) 1765 { 1766 va_list ap; 1767 1768 va_start(ap, fmt); 1769 if (jobsRunning) 1770 Job_Wait(); 1771 1772 (void)fflush(stdout); 1773 (void)vfprintf(stderr, fmt, ap); 1774 va_end(ap); 1775 (void)fprintf(stderr, "\n"); 1776 (void)fflush(stderr); 1777 1778 PrintOnError(NULL, NULL); 1779 1780 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1781 Targ_PrintGraph(2); 1782 Trace_Log(MAKEERROR, 0); 1783 exit(2); /* Not 1 so -q can distinguish error */ 1784 } 1785 1786 /* 1787 * Punt -- 1788 * Major exception once jobs are being created. Kills all jobs, prints 1789 * a message and exits. 1790 * 1791 * Results: 1792 * None 1793 * 1794 * Side Effects: 1795 * All children are killed indiscriminately and the program Lib_Exits 1796 */ 1797 void 1798 Punt(const char *fmt, ...) 1799 { 1800 va_list ap; 1801 1802 va_start(ap, fmt); 1803 (void)fflush(stdout); 1804 (void)fprintf(stderr, "%s: ", progname); 1805 (void)vfprintf(stderr, fmt, ap); 1806 va_end(ap); 1807 (void)fprintf(stderr, "\n"); 1808 (void)fflush(stderr); 1809 1810 PrintOnError(NULL, NULL); 1811 1812 DieHorribly(); 1813 } 1814 1815 /*- 1816 * DieHorribly -- 1817 * Exit without giving a message. 1818 * 1819 * Results: 1820 * None 1821 * 1822 * Side Effects: 1823 * A big one... 1824 */ 1825 void 1826 DieHorribly(void) 1827 { 1828 if (jobsRunning) 1829 Job_AbortAll(); 1830 if (DEBUG(GRAPH2)) 1831 Targ_PrintGraph(2); 1832 Trace_Log(MAKEERROR, 0); 1833 exit(2); /* Not 1, so -q can distinguish error */ 1834 } 1835 1836 /* 1837 * Finish -- 1838 * Called when aborting due to errors in child shell to signal 1839 * abnormal exit. 1840 * 1841 * Results: 1842 * None 1843 * 1844 * Side Effects: 1845 * The program exits 1846 */ 1847 void 1848 Finish(int errors) 1849 /* number of errors encountered in Make_Make */ 1850 { 1851 if (dieQuietly(NULL, -1)) 1852 exit(2); 1853 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1854 } 1855 1856 /* 1857 * eunlink -- 1858 * Remove a file carefully, avoiding directories. 1859 */ 1860 int 1861 eunlink(const char *file) 1862 { 1863 struct stat st; 1864 1865 if (lstat(file, &st) == -1) 1866 return -1; 1867 1868 if (S_ISDIR(st.st_mode)) { 1869 errno = EISDIR; 1870 return -1; 1871 } 1872 return unlink(file); 1873 } 1874 1875 static void 1876 write_all(int fd, const void *data, size_t n) 1877 { 1878 const char *mem = data; 1879 1880 while (n > 0) { 1881 ssize_t written = write(fd, mem, n); 1882 if (written == -1 && errno == EAGAIN) 1883 continue; 1884 if (written == -1) 1885 break; 1886 mem += written; 1887 n -= written; 1888 } 1889 } 1890 1891 /* 1892 * execDie -- 1893 * Print why exec failed, avoiding stdio. 1894 */ 1895 void MAKE_ATTR_DEAD 1896 execDie(const char *af, const char *av) 1897 { 1898 Buffer buf; 1899 1900 Buf_Init(&buf, 0); 1901 Buf_AddStr(&buf, progname); 1902 Buf_AddStr(&buf, ": "); 1903 Buf_AddStr(&buf, af); 1904 Buf_AddStr(&buf, "("); 1905 Buf_AddStr(&buf, av); 1906 Buf_AddStr(&buf, ") failed ("); 1907 Buf_AddStr(&buf, strerror(errno)); 1908 Buf_AddStr(&buf, ")\n"); 1909 1910 write_all(STDERR_FILENO, Buf_GetAll(&buf, NULL), Buf_Len(&buf)); 1911 1912 Buf_Destroy(&buf, TRUE); 1913 _exit(1); 1914 } 1915 1916 /* 1917 * usage -- 1918 * exit with usage message 1919 */ 1920 static void 1921 usage(void) 1922 { 1923 char *p; 1924 if ((p = strchr(progname, '[')) != NULL) 1925 *p = '\0'; 1926 1927 (void)fprintf(stderr, 1928 "usage: %s [-BeikNnqrstWwX] \n" 1929 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1930 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1931 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1932 progname); 1933 exit(2); 1934 } 1935 1936 /* 1937 * realpath(3) can get expensive, cache results... 1938 */ 1939 static GNode *cached_realpaths = NULL; 1940 1941 static GNode * 1942 get_cached_realpaths(void) 1943 { 1944 1945 if (!cached_realpaths) { 1946 cached_realpaths = Targ_NewGN("Realpath"); 1947 #ifndef DEBUG_REALPATH_CACHE 1948 cached_realpaths->flags = INTERNAL; 1949 #endif 1950 } 1951 1952 return cached_realpaths; 1953 } 1954 1955 /* purge any relative paths */ 1956 static void 1957 purge_cached_realpaths(void) 1958 { 1959 GNode *cache = get_cached_realpaths(); 1960 Hash_Entry *he, *nhe; 1961 Hash_Search hs; 1962 1963 he = Hash_EnumFirst(&cache->context, &hs); 1964 while (he) { 1965 nhe = Hash_EnumNext(&hs); 1966 if (he->name[0] != '/') { 1967 if (DEBUG(DIR)) 1968 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1969 Hash_DeleteEntry(&cache->context, he); 1970 } 1971 he = nhe; 1972 } 1973 } 1974 1975 char * 1976 cached_realpath(const char *pathname, char *resolved) 1977 { 1978 GNode *cache; 1979 const char *rp; 1980 char *cp; 1981 1982 if (!pathname || !pathname[0]) 1983 return NULL; 1984 1985 cache = get_cached_realpaths(); 1986 1987 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1988 /* a hit */ 1989 strncpy(resolved, rp, MAXPATHLEN); 1990 resolved[MAXPATHLEN - 1] = '\0'; 1991 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1992 Var_Set(pathname, rp, cache); 1993 } /* else should we negative-cache? */ 1994 1995 bmake_free(cp); 1996 return rp ? resolved : NULL; 1997 } 1998 1999 2000 static int 2001 addErrorCMD(void *cmdp, void *gnp) 2002 { 2003 if (cmdp == NULL) 2004 return 1; /* stop */ 2005 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 2006 return 0; 2007 } 2008 2009 /* 2010 * Return true if we should die without noise. 2011 * For example our failing child was a sub-make 2012 * or failure happend elsewhere. 2013 */ 2014 int 2015 dieQuietly(GNode *gn, int bf) 2016 { 2017 static int quietly = -1; 2018 2019 if (quietly < 0) { 2020 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 2021 quietly = 0; 2022 else if (bf >= 0) 2023 quietly = bf; 2024 else 2025 quietly = (gn) ? ((gn->type & (OP_MAKE)) != 0) : 0; 2026 } 2027 return quietly; 2028 } 2029 2030 void 2031 PrintOnError(GNode *gn, const char *s) 2032 { 2033 static GNode *en = NULL; 2034 const char *expr; 2035 char *cp; 2036 2037 if (DEBUG(HASH)) { 2038 Targ_Stats(); 2039 Var_Stats(); 2040 } 2041 2042 /* we generally want to keep quiet if a sub-make died */ 2043 if (dieQuietly(gn, -1)) 2044 return; 2045 2046 if (s) 2047 printf("%s", s); 2048 2049 printf("\n%s: stopped in %s\n", progname, curdir); 2050 2051 if (en) 2052 return; /* we've been here! */ 2053 if (gn) { 2054 /* 2055 * We can print this even if there is no .ERROR target. 2056 */ 2057 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2058 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2059 Lst_ForEachUntil(gn->commands, addErrorCMD, gn); 2060 } 2061 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2062 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &cp); 2063 /* TODO: handle errors */ 2064 printf("%s", cp); 2065 free(cp); 2066 fflush(stdout); 2067 2068 /* 2069 * Finally, see if there is a .ERROR target, and run it if so. 2070 */ 2071 en = Targ_FindNode(".ERROR"); 2072 if (en) { 2073 en->type |= OP_SPECIAL; 2074 Compat_Make(en, en); 2075 } 2076 } 2077 2078 void 2079 Main_ExportMAKEFLAGS(Boolean first) 2080 { 2081 static Boolean once = TRUE; 2082 const char *expr; 2083 char *s; 2084 2085 if (once != first) 2086 return; 2087 once = FALSE; 2088 2089 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2090 (void)Var_Subst(expr, VAR_CMD, VARE_WANTRES, &s); 2091 /* TODO: handle errors */ 2092 if (s[0] != '\0') { 2093 #ifdef POSIX 2094 setenv("MAKEFLAGS", s, 1); 2095 #else 2096 setenv("MAKE", s, 1); 2097 #endif 2098 } 2099 } 2100 2101 char * 2102 getTmpdir(void) 2103 { 2104 static char *tmpdir = NULL; 2105 2106 if (!tmpdir) { 2107 struct stat st; 2108 2109 /* 2110 * Honor $TMPDIR but only if it is valid. 2111 * Ensure it ends with /. 2112 */ 2113 (void)Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2114 VARE_WANTRES, &tmpdir); 2115 /* TODO: handle errors */ 2116 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2117 free(tmpdir); 2118 tmpdir = bmake_strdup(_PATH_TMP); 2119 } 2120 } 2121 return tmpdir; 2122 } 2123 2124 /* 2125 * Create and open a temp file using "pattern". 2126 * If "fnamep" is provided set it to a copy of the filename created. 2127 * Otherwise unlink the file once open. 2128 */ 2129 int 2130 mkTempFile(const char *pattern, char **fnamep) 2131 { 2132 static char *tmpdir = NULL; 2133 char tfile[MAXPATHLEN]; 2134 int fd; 2135 2136 if (!pattern) 2137 pattern = TMPPAT; 2138 if (!tmpdir) 2139 tmpdir = getTmpdir(); 2140 if (pattern[0] == '/') { 2141 snprintf(tfile, sizeof(tfile), "%s", pattern); 2142 } else { 2143 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2144 } 2145 if ((fd = mkstemp(tfile)) < 0) 2146 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2147 if (fnamep) { 2148 *fnamep = bmake_strdup(tfile); 2149 } else { 2150 unlink(tfile); /* we just want the descriptor */ 2151 } 2152 return fd; 2153 } 2154 2155 /* 2156 * Convert a string representation of a boolean. 2157 * Anything that looks like "No", "False", "Off", "0" etc, 2158 * is FALSE, otherwise TRUE. 2159 */ 2160 Boolean 2161 s2Boolean(const char *s, Boolean bf) 2162 { 2163 if (s) { 2164 switch(*s) { 2165 case '\0': /* not set - the default wins */ 2166 break; 2167 case '0': 2168 case 'F': 2169 case 'f': 2170 case 'N': 2171 case 'n': 2172 bf = FALSE; 2173 break; 2174 case 'O': 2175 case 'o': 2176 switch (s[1]) { 2177 case 'F': 2178 case 'f': 2179 bf = FALSE; 2180 break; 2181 default: 2182 bf = TRUE; 2183 break; 2184 } 2185 break; 2186 default: 2187 bf = TRUE; 2188 break; 2189 } 2190 } 2191 return bf; 2192 } 2193 2194 /* 2195 * Return a Boolean based on setting of a knob. 2196 * 2197 * If the knob is not set, the supplied default is the return value. 2198 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2199 * is FALSE, otherwise TRUE. 2200 */ 2201 Boolean 2202 getBoolean(const char *name, Boolean fallback) 2203 { 2204 char *expr = str_concat3("${", name, ":U:tl}"); 2205 char *value; 2206 Boolean res; 2207 2208 (void)Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES, &value); 2209 /* TODO: handle errors */ 2210 res = s2Boolean(value, fallback); 2211 free(value); 2212 free(expr); 2213 return res; 2214 } 2215
Indexes created Mon Sep 22 13:09:51 GMT 2025