1 /* $NetBSD: main.c,v 1.260 2017/04/13 13:55:23 christos 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 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: main.c,v 1.260 2017/04/13 13:55:23 christos Exp $"; 73 #else 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\ 77 The Regents of the University of California. All rights reserved."); 78 #endif /* not lint */ 79 80 #ifndef lint 81 #if 0 82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94"; 83 #else 84 __RCSID("$NetBSD: main.c,v 1.260 2017/04/13 13:55:23 christos Exp $"); 85 #endif 86 #endif /* not lint */ 87 #endif 88 89 /*- 90 * main.c -- 91 * The main file for this entire program. Exit routines etc 92 * reside here. 93 * 94 * Utility functions defined in this file: 95 * Main_ParseArgLine Takes a line of arguments, breaks them and 96 * treats them as if they were given when first 97 * invoked. Used by the parse module to implement 98 * the .MFLAGS target. 99 * 100 * Error Print a tagged error message. The global 101 * MAKE variable must have been defined. This 102 * takes a format string and optional arguments 103 * for it. 104 * 105 * Fatal Print an error message and exit. Also takes 106 * a format string and arguments for it. 107 * 108 * Punt Aborts all jobs and exits with a message. Also 109 * takes a format string and arguments for it. 110 * 111 * Finish Finish things up by printing the number of 112 * errors which occurred, as passed to it, and 113 * exiting. 114 */ 115 116 #include <sys/types.h> 117 #include <sys/time.h> 118 #include <sys/param.h> 119 #include <sys/resource.h> 120 #include <sys/stat.h> 121 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) 122 #include <sys/sysctl.h> 123 #endif 124 #include <sys/utsname.h> 125 #include "wait.h" 126 127 #include <errno.h> 128 #include <signal.h> 129 #include <stdarg.h> 130 #include <stdio.h> 131 #include <stdlib.h> 132 #include <time.h> 133 #include <ctype.h> 134 135 #include "make.h" 136 #include "hash.h" 137 #include "dir.h" 138 #include "job.h" 139 #include "pathnames.h" 140 #include "trace.h" 141 142 #ifdef USE_IOVEC 143 #include <sys/uio.h> 144 #endif 145 146 #ifndef DEFMAXLOCAL 147 #define DEFMAXLOCAL DEFMAXJOBS 148 #endif /* DEFMAXLOCAL */ 149 150 #ifndef __arraycount 151 # define __arraycount(__x) (sizeof(__x) / sizeof(__x[0])) 152 #endif 153 154 Lst create; /* Targets to be made */ 155 time_t now; /* Time at start of make */ 156 GNode *DEFAULT; /* .DEFAULT node */ 157 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 158 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 159 160 static Boolean noBuiltins; /* -r flag */ 161 static Lst makefiles; /* ordered list of makefiles to read */ 162 static Boolean printVars; /* print value of one or more vars */ 163 static Lst variables; /* list of variables to print */ 164 int maxJobs; /* -j argument */ 165 static int maxJobTokens; /* -j argument */ 166 Boolean compatMake; /* -B argument */ 167 int debug; /* -d argument */ 168 Boolean debugVflag; /* -dV */ 169 Boolean noExecute; /* -n flag */ 170 Boolean noRecursiveExecute; /* -N flag */ 171 Boolean keepgoing; /* -k flag */ 172 Boolean queryFlag; /* -q flag */ 173 Boolean touchFlag; /* -t flag */ 174 Boolean enterFlag; /* -w flag */ 175 Boolean enterFlagObj; /* -w and objdir != srcdir */ 176 Boolean ignoreErrors; /* -i flag */ 177 Boolean beSilent; /* -s flag */ 178 Boolean oldVars; /* variable substitution style */ 179 Boolean checkEnvFirst; /* -e flag */ 180 Boolean parseWarnFatal; /* -W flag */ 181 Boolean jobServer; /* -J flag */ 182 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 183 Boolean varNoExportEnv; /* -X flag */ 184 Boolean doing_depend; /* Set while reading .depend */ 185 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 186 static const char * tracefile; 187 static void MainParseArgs(int, char **); 188 static int ReadMakefile(const void *, const void *); 189 static void usage(void) MAKE_ATTR_DEAD; 190 191 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 192 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 193 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 194 char *progname; /* the program name */ 195 char *makeDependfile; 196 pid_t myPid; 197 int makelevel; 198 199 Boolean forceJobs = FALSE; 200 201 /* 202 * On some systems MACHINE is defined as something other than 203 * what we want. 204 */ 205 #ifdef FORCE_MACHINE 206 # undef MACHINE 207 # define MACHINE FORCE_MACHINE 208 #endif 209 210 extern Lst parseIncPath; 211 212 /* 213 * For compatibility with the POSIX version of MAKEFLAGS that includes 214 * all the options with out -, convert flags to -f -l -a -g -s. 215 */ 216 static char * 217 explode(const char *flags) 218 { 219 size_t len; 220 char *nf, *st; 221 const char *f; 222 223 if (flags == NULL) 224 return NULL; 225 226 for (f = flags; *f; f++) 227 if (!isalpha((unsigned char)*f)) 228 break; 229 230 if (*f) 231 return bmake_strdup(flags); 232 233 len = strlen(flags); 234 st = nf = bmake_malloc(len * 3 + 1); 235 while (*flags) { 236 *nf++ = '-'; 237 *nf++ = *flags++; 238 *nf++ = ' '; 239 } 240 *nf = '\0'; 241 return st; 242 } 243 244 static void 245 parse_debug_options(const char *argvalue) 246 { 247 const char *modules; 248 const char *mode; 249 char *fname; 250 int len; 251 252 for (modules = argvalue; *modules; ++modules) { 253 switch (*modules) { 254 case 'A': 255 debug = ~0; 256 break; 257 case 'a': 258 debug |= DEBUG_ARCH; 259 break; 260 case 'C': 261 debug |= DEBUG_CWD; 262 break; 263 case 'c': 264 debug |= DEBUG_COND; 265 break; 266 case 'd': 267 debug |= DEBUG_DIR; 268 break; 269 case 'e': 270 debug |= DEBUG_ERROR; 271 break; 272 case 'f': 273 debug |= DEBUG_FOR; 274 break; 275 case 'g': 276 if (modules[1] == '1') { 277 debug |= DEBUG_GRAPH1; 278 ++modules; 279 } 280 else if (modules[1] == '2') { 281 debug |= DEBUG_GRAPH2; 282 ++modules; 283 } 284 else if (modules[1] == '3') { 285 debug |= DEBUG_GRAPH3; 286 ++modules; 287 } 288 break; 289 case 'j': 290 debug |= DEBUG_JOB; 291 break; 292 case 'l': 293 debug |= DEBUG_LOUD; 294 break; 295 case 'M': 296 debug |= DEBUG_META; 297 break; 298 case 'm': 299 debug |= DEBUG_MAKE; 300 break; 301 case 'n': 302 debug |= DEBUG_SCRIPT; 303 break; 304 case 'p': 305 debug |= DEBUG_PARSE; 306 break; 307 case 's': 308 debug |= DEBUG_SUFF; 309 break; 310 case 't': 311 debug |= DEBUG_TARG; 312 break; 313 case 'V': 314 debugVflag = TRUE; 315 break; 316 case 'v': 317 debug |= DEBUG_VAR; 318 break; 319 case 'x': 320 debug |= DEBUG_SHELL; 321 break; 322 case 'F': 323 if (debug_file != stdout && debug_file != stderr) 324 fclose(debug_file); 325 if (*++modules == '+') { 326 modules++; 327 mode = "a"; 328 } else 329 mode = "w"; 330 if (strcmp(modules, "stdout") == 0) { 331 debug_file = stdout; 332 goto debug_setbuf; 333 } 334 if (strcmp(modules, "stderr") == 0) { 335 debug_file = stderr; 336 goto debug_setbuf; 337 } 338 len = strlen(modules); 339 fname = malloc(len + 20); 340 memcpy(fname, modules, len + 1); 341 /* Let the filename be modified by the pid */ 342 if (strcmp(fname + len - 3, ".%d") == 0) 343 snprintf(fname + len - 2, 20, "%d", getpid()); 344 debug_file = fopen(fname, mode); 345 if (!debug_file) { 346 fprintf(stderr, "Cannot open debug file %s\n", 347 fname); 348 usage(); 349 } 350 free(fname); 351 goto debug_setbuf; 352 default: 353 (void)fprintf(stderr, 354 "%s: illegal argument to d option -- %c\n", 355 progname, *modules); 356 usage(); 357 } 358 } 359 debug_setbuf: 360 /* 361 * Make the debug_file unbuffered, and make 362 * stdout line buffered (unless debugfile == stdout). 363 */ 364 setvbuf(debug_file, NULL, _IONBF, 0); 365 if (debug_file != stdout) { 366 setvbuf(stdout, NULL, _IOLBF, 0); 367 } 368 } 369 370 /*- 371 * MainParseArgs -- 372 * Parse a given argument vector. Called from main() and from 373 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 374 * 375 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 376 * 377 * Results: 378 * None 379 * 380 * Side Effects: 381 * Various global and local flags will be set depending on the flags 382 * given 383 */ 384 static void 385 MainParseArgs(int argc, char **argv) 386 { 387 char *p; 388 int c = '?'; 389 int arginc; 390 char *argvalue; 391 const char *getopt_def; 392 struct stat sa, sb; 393 char *optscan; 394 Boolean inOption, dashDash = FALSE; 395 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 396 397 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw" 398 /* Can't actually use getopt(3) because rescanning is not portable */ 399 400 getopt_def = OPTFLAGS; 401 rearg: 402 inOption = FALSE; 403 optscan = NULL; 404 while(argc > 1) { 405 char *getopt_spec; 406 if(!inOption) 407 optscan = argv[1]; 408 c = *optscan++; 409 arginc = 0; 410 if(inOption) { 411 if(c == '\0') { 412 ++argv; 413 --argc; 414 inOption = FALSE; 415 continue; 416 } 417 } else { 418 if (c != '-' || dashDash) 419 break; 420 inOption = TRUE; 421 c = *optscan++; 422 } 423 /* '-' found at some earlier point */ 424 getopt_spec = strchr(getopt_def, c); 425 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 426 /* -<something> found, and <something> should have an arg */ 427 inOption = FALSE; 428 arginc = 1; 429 argvalue = optscan; 430 if(*argvalue == '\0') { 431 if (argc < 3) 432 goto noarg; 433 argvalue = argv[2]; 434 arginc = 2; 435 } 436 } else { 437 argvalue = NULL; 438 } 439 switch(c) { 440 case '\0': 441 arginc = 1; 442 inOption = FALSE; 443 break; 444 case 'B': 445 compatMake = TRUE; 446 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 447 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 448 break; 449 case 'C': 450 if (chdir(argvalue) == -1) { 451 (void)fprintf(stderr, 452 "%s: chdir %s: %s\n", 453 progname, argvalue, 454 strerror(errno)); 455 exit(1); 456 } 457 if (getcwd(curdir, MAXPATHLEN) == NULL) { 458 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 459 exit(2); 460 } 461 if (argvalue[0] == '/' && 462 stat(argvalue, &sa) != -1 && 463 stat(curdir, &sb) != -1 && 464 sa.st_ino == sb.st_ino && 465 sa.st_dev == sb.st_dev) 466 strncpy(curdir, argvalue, MAXPATHLEN); 467 ignorePWD = TRUE; 468 break; 469 case 'D': 470 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 471 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 472 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 473 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 474 break; 475 case 'I': 476 if (argvalue == NULL) goto noarg; 477 Parse_AddIncludeDir(argvalue); 478 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 479 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 480 break; 481 case 'J': 482 if (argvalue == NULL) goto noarg; 483 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 484 (void)fprintf(stderr, 485 "%s: internal error -- J option malformed (%s)\n", 486 progname, argvalue); 487 usage(); 488 } 489 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 490 (fcntl(jp_1, F_GETFD, 0) < 0)) { 491 #if 0 492 (void)fprintf(stderr, 493 "%s: ###### warning -- J descriptors were closed!\n", 494 progname); 495 exit(2); 496 #endif 497 jp_0 = -1; 498 jp_1 = -1; 499 compatMake = TRUE; 500 } else { 501 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 502 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 503 jobServer = TRUE; 504 } 505 break; 506 case 'N': 507 noExecute = TRUE; 508 noRecursiveExecute = TRUE; 509 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 510 break; 511 case 'S': 512 keepgoing = FALSE; 513 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 514 break; 515 case 'T': 516 if (argvalue == NULL) goto noarg; 517 tracefile = bmake_strdup(argvalue); 518 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 519 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 520 break; 521 case 'V': 522 if (argvalue == NULL) goto noarg; 523 printVars = TRUE; 524 (void)Lst_AtEnd(variables, argvalue); 525 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 526 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 527 break; 528 case 'W': 529 parseWarnFatal = TRUE; 530 break; 531 case 'X': 532 varNoExportEnv = TRUE; 533 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 534 break; 535 case 'd': 536 if (argvalue == NULL) goto noarg; 537 /* If '-d-opts' don't pass to children */ 538 if (argvalue[0] == '-') 539 argvalue++; 540 else { 541 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 542 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 543 } 544 parse_debug_options(argvalue); 545 break; 546 case 'e': 547 checkEnvFirst = TRUE; 548 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 549 break; 550 case 'f': 551 if (argvalue == NULL) goto noarg; 552 (void)Lst_AtEnd(makefiles, argvalue); 553 break; 554 case 'i': 555 ignoreErrors = TRUE; 556 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 557 break; 558 case 'j': 559 if (argvalue == NULL) goto noarg; 560 forceJobs = TRUE; 561 maxJobs = strtol(argvalue, &p, 0); 562 if (*p != '\0' || maxJobs < 1) { 563 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 564 progname); 565 exit(1); 566 } 567 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 568 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 569 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 570 maxJobTokens = maxJobs; 571 break; 572 case 'k': 573 keepgoing = TRUE; 574 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 575 break; 576 case 'm': 577 if (argvalue == NULL) goto noarg; 578 /* look for magic parent directory search string */ 579 if (strncmp(".../", argvalue, 4) == 0) { 580 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 581 found_path, sizeof(found_path))) 582 break; /* nothing doing */ 583 (void)Dir_AddDir(sysIncPath, found_path); 584 } else { 585 (void)Dir_AddDir(sysIncPath, argvalue); 586 } 587 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 588 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 589 break; 590 case 'n': 591 noExecute = TRUE; 592 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 593 break; 594 case 'q': 595 queryFlag = TRUE; 596 /* Kind of nonsensical, wot? */ 597 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 598 break; 599 case 'r': 600 noBuiltins = TRUE; 601 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 602 break; 603 case 's': 604 beSilent = TRUE; 605 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 606 break; 607 case 't': 608 touchFlag = TRUE; 609 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 610 break; 611 case 'w': 612 enterFlag = TRUE; 613 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 614 break; 615 case '-': 616 dashDash = TRUE; 617 break; 618 default: 619 case '?': 620 #ifndef MAKE_NATIVE 621 fprintf(stderr, "getopt(%s) -> %d (%c)\n", 622 OPTFLAGS, c, c); 623 #endif 624 usage(); 625 } 626 argv += arginc; 627 argc -= arginc; 628 } 629 630 oldVars = TRUE; 631 632 /* 633 * See if the rest of the arguments are variable assignments and 634 * perform them if so. Else take them to be targets and stuff them 635 * on the end of the "create" list. 636 */ 637 for (; argc > 1; ++argv, --argc) 638 if (Parse_IsVar(argv[1])) { 639 Parse_DoVar(argv[1], VAR_CMD); 640 } else { 641 if (!*argv[1]) 642 Punt("illegal (null) argument."); 643 if (*argv[1] == '-' && !dashDash) 644 goto rearg; 645 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 646 } 647 648 return; 649 noarg: 650 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 651 progname, c); 652 usage(); 653 } 654 655 /*- 656 * Main_ParseArgLine -- 657 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 658 * is encountered and by main() when reading the .MAKEFLAGS envariable. 659 * Takes a line of arguments and breaks it into its 660 * component words and passes those words and the number of them to the 661 * MainParseArgs function. 662 * The line should have all its leading whitespace removed. 663 * 664 * Input: 665 * line Line to fracture 666 * 667 * Results: 668 * None 669 * 670 * Side Effects: 671 * Only those that come from the various arguments. 672 */ 673 void 674 Main_ParseArgLine(const char *line) 675 { 676 char **argv; /* Manufactured argument vector */ 677 int argc; /* Number of arguments in argv */ 678 char *args; /* Space used by the args */ 679 char *buf, *p1; 680 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 681 size_t len; 682 683 if (line == NULL) 684 return; 685 for (; *line == ' '; ++line) 686 continue; 687 if (!*line) 688 return; 689 690 #ifndef POSIX 691 { 692 /* 693 * $MAKE may simply be naming the make(1) binary 694 */ 695 char *cp; 696 697 if (!(cp = strrchr(line, '/'))) 698 cp = line; 699 if ((cp = strstr(cp, "make")) && 700 strcmp(cp, "make") == 0) 701 return; 702 } 703 #endif 704 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 705 (void)snprintf(buf, len, "%s %s", argv0, line); 706 free(p1); 707 708 argv = brk_string(buf, &argc, TRUE, &args); 709 if (argv == NULL) { 710 Error("Unterminated quoted string [%s]", buf); 711 free(buf); 712 return; 713 } 714 free(buf); 715 MainParseArgs(argc, argv); 716 717 free(args); 718 free(argv); 719 } 720 721 Boolean 722 Main_SetObjdir(const char *fmt, ...) 723 { 724 struct stat sb; 725 char *path; 726 char buf[MAXPATHLEN + 1]; 727 Boolean rc = FALSE; 728 va_list ap; 729 730 va_start(ap, fmt); 731 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 732 va_end(ap); 733 734 if (path[0] != '/') { 735 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path); 736 path = buf; 737 } 738 739 /* look for the directory and try to chdir there */ 740 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 741 if (chdir(path)) { 742 (void)fprintf(stderr, "make warning: %s: %s.\n", 743 path, strerror(errno)); 744 } else { 745 strncpy(objdir, path, MAXPATHLEN); 746 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 747 setenv("PWD", objdir, 1); 748 Dir_InitDot(); 749 cached_realpath(".OBJDIR", NULL); /* purge */ 750 rc = TRUE; 751 if (enterFlag && strcmp(objdir, curdir) != 0) 752 enterFlagObj = TRUE; 753 } 754 } 755 756 return rc; 757 } 758 759 static Boolean 760 Main_SetVarObjdir(const char *var, const char *suffix) 761 { 762 char *p, *path, *xpath; 763 764 if ((path = Var_Value(var, VAR_CMD, &p)) == NULL) 765 return FALSE; 766 767 /* expand variable substitutions */ 768 if (strchr(path, '$') != 0) 769 xpath = Var_Subst(NULL, path, VAR_GLOBAL, VARF_WANTRES); 770 else 771 xpath = path; 772 773 (void)Main_SetObjdir("%s%s", xpath, suffix); 774 775 if (xpath != path) 776 free(xpath); 777 free(p); 778 return TRUE; 779 } 780 781 /*- 782 * ReadAllMakefiles -- 783 * wrapper around ReadMakefile() to read all. 784 * 785 * Results: 786 * TRUE if ok, FALSE on error 787 */ 788 static int 789 ReadAllMakefiles(const void *p, const void *q) 790 { 791 return (ReadMakefile(p, q) == 0); 792 } 793 794 int 795 str2Lst_Append(Lst lp, char *str, const char *sep) 796 { 797 char *cp; 798 int n; 799 800 if (!sep) 801 sep = " \t"; 802 803 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 804 (void)Lst_AtEnd(lp, cp); 805 n++; 806 } 807 return (n); 808 } 809 810 #ifdef SIGINFO 811 /*ARGSUSED*/ 812 static void 813 siginfo(int signo MAKE_ATTR_UNUSED) 814 { 815 char dir[MAXPATHLEN]; 816 char str[2 * MAXPATHLEN]; 817 int len; 818 if (getcwd(dir, sizeof(dir)) == NULL) 819 return; 820 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 821 if (len > 0) 822 (void)write(STDERR_FILENO, str, (size_t)len); 823 } 824 #endif 825 826 /* 827 * Allow makefiles some control over the mode we run in. 828 */ 829 void 830 MakeMode(const char *mode) 831 { 832 char *mp = NULL; 833 834 if (!mode) 835 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", 836 VAR_GLOBAL, VARF_WANTRES); 837 838 if (mode && *mode) { 839 if (strstr(mode, "compat")) { 840 compatMake = TRUE; 841 forceJobs = FALSE; 842 } 843 #if USE_META 844 if (strstr(mode, "meta")) 845 meta_mode_init(mode); 846 #endif 847 } 848 849 free(mp); 850 } 851 852 /*- 853 * main -- 854 * The main function, for obvious reasons. Initializes variables 855 * and a few modules, then parses the arguments give it in the 856 * environment and on the command line. Reads the system makefile 857 * followed by either Makefile, makefile or the file given by the 858 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 859 * flags it has received by then uses either the Make or the Compat 860 * module to create the initial list of targets. 861 * 862 * Results: 863 * If -q was given, exits -1 if anything was out-of-date. Else it exits 864 * 0. 865 * 866 * Side Effects: 867 * The program exits when done. Targets are created. etc. etc. etc. 868 */ 869 int 870 main(int argc, char **argv) 871 { 872 Lst targs; /* target nodes to create -- passed to Make_Init */ 873 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */ 874 struct stat sb, sa; 875 char *p1, *path; 876 char mdpath[MAXPATHLEN]; 877 #ifdef FORCE_MACHINE 878 const char *machine = FORCE_MACHINE; 879 #else 880 const char *machine = getenv("MACHINE"); 881 #endif 882 const char *machine_arch = getenv("MACHINE_ARCH"); 883 char *syspath = getenv("MAKESYSPATH"); 884 Lst sysMkPath; /* Path of sys.mk */ 885 char *cp = NULL, *start; 886 /* avoid faults on read-only strings */ 887 static char defsyspath[] = _PATH_DEFSYSPATH; 888 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 889 struct timeval rightnow; /* to initialize random seed */ 890 struct utsname utsname; 891 892 /* default to writing debug to stderr */ 893 debug_file = stderr; 894 895 #ifdef SIGINFO 896 (void)bmake_signal(SIGINFO, siginfo); 897 #endif 898 /* 899 * Set the seed to produce a different random sequence 900 * on each program execution. 901 */ 902 gettimeofday(&rightnow, NULL); 903 srandom(rightnow.tv_sec + rightnow.tv_usec); 904 905 if ((progname = strrchr(argv[0], '/')) != NULL) 906 progname++; 907 else 908 progname = argv[0]; 909 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 910 /* 911 * get rid of resource limit on file descriptors 912 */ 913 { 914 struct rlimit rl; 915 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 916 rl.rlim_cur != rl.rlim_max) { 917 rl.rlim_cur = rl.rlim_max; 918 (void)setrlimit(RLIMIT_NOFILE, &rl); 919 } 920 } 921 #endif 922 923 if (uname(&utsname) == -1) { 924 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 925 strerror(errno)); 926 exit(2); 927 } 928 929 /* 930 * Get the name of this type of MACHINE from utsname 931 * so we can share an executable for similar machines. 932 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 933 * 934 * Note that both MACHINE and MACHINE_ARCH are decided at 935 * run-time. 936 */ 937 if (!machine) { 938 #ifdef MAKE_NATIVE 939 machine = utsname.machine; 940 #else 941 #ifdef MAKE_MACHINE 942 machine = MAKE_MACHINE; 943 #else 944 machine = "unknown"; 945 #endif 946 #endif 947 } 948 949 if (!machine_arch) { 950 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) && defined(CTL_HW) && defined(HW_MACHINE_ARCH) 951 static char machine_arch_buf[sizeof(utsname.machine)]; 952 int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 953 size_t len = sizeof(machine_arch_buf); 954 955 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 956 &len, NULL, 0) < 0) { 957 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 958 strerror(errno)); 959 exit(2); 960 } 961 962 machine_arch = machine_arch_buf; 963 #else 964 #ifndef MACHINE_ARCH 965 #ifdef MAKE_MACHINE_ARCH 966 machine_arch = MAKE_MACHINE_ARCH; 967 #else 968 machine_arch = "unknown"; 969 #endif 970 #else 971 machine_arch = MACHINE_ARCH; 972 #endif 973 #endif 974 } 975 976 myPid = getpid(); /* remember this for vFork() */ 977 978 /* 979 * Just in case MAKEOBJDIR wants us to do something tricky. 980 */ 981 Var_Init(); /* Initialize the lists of variables for 982 * parsing arguments */ 983 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 984 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 985 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 986 #ifdef MAKE_VERSION 987 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 988 #endif 989 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 990 /* 991 * This is the traditional preference for makefiles. 992 */ 993 #ifndef MAKEFILE_PREFERENCE_LIST 994 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 995 #endif 996 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 997 VAR_GLOBAL, 0); 998 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 999 1000 create = Lst_Init(FALSE); 1001 makefiles = Lst_Init(FALSE); 1002 printVars = FALSE; 1003 debugVflag = FALSE; 1004 variables = Lst_Init(FALSE); 1005 beSilent = FALSE; /* Print commands as executed */ 1006 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1007 noExecute = FALSE; /* Execute all commands */ 1008 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1009 keepgoing = FALSE; /* Stop on error */ 1010 allPrecious = FALSE; /* Remove targets when interrupted */ 1011 deleteOnError = FALSE; /* Historical default behavior */ 1012 queryFlag = FALSE; /* This is not just a check-run */ 1013 noBuiltins = FALSE; /* Read the built-in rules */ 1014 touchFlag = FALSE; /* Actually update targets */ 1015 debug = 0; /* No debug verbosity, please. */ 1016 jobsRunning = FALSE; 1017 1018 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1019 maxJobTokens = maxJobs; 1020 compatMake = FALSE; /* No compat mode */ 1021 ignorePWD = FALSE; 1022 1023 /* 1024 * Initialize the parsing, directory and variable modules to prepare 1025 * for the reading of inclusion paths and variable settings on the 1026 * command line 1027 */ 1028 1029 /* 1030 * Initialize various variables. 1031 * MAKE also gets this name, for compatibility 1032 * .MAKEFLAGS gets set to the empty string just in case. 1033 * MFLAGS also gets initialized empty, for compatibility. 1034 */ 1035 Parse_Init(); 1036 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1037 /* 1038 * Leave alone if it is an absolute path, or if it does 1039 * not contain a '/' in which case we need to find it in 1040 * the path, like execvp(3) and the shells do. 1041 */ 1042 p1 = argv[0]; 1043 } else { 1044 /* 1045 * A relative path, canonicalize it. 1046 */ 1047 p1 = cached_realpath(argv[0], mdpath); 1048 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1049 p1 = argv[0]; /* realpath failed */ 1050 } 1051 } 1052 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 1053 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 1054 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 1055 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 1056 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 1057 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 1058 /* some makefiles need to know this */ 1059 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 1060 1061 /* 1062 * Set some other useful macros 1063 */ 1064 { 1065 char tmp[64], *ep; 1066 1067 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1068 if (makelevel < 0) 1069 makelevel = 0; 1070 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1071 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1072 snprintf(tmp, sizeof(tmp), "%u", myPid); 1073 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1074 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1075 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1076 } 1077 if (makelevel > 0) { 1078 char pn[1024]; 1079 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1080 progname = bmake_strdup(pn); 1081 } 1082 1083 #ifdef USE_META 1084 meta_init(); 1085 #endif 1086 Dir_Init(NULL); /* Dir_* safe to call from MainParseArgs */ 1087 1088 /* 1089 * First snag any flags out of the MAKE environment variable. 1090 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1091 * in a different format). 1092 */ 1093 #ifdef POSIX 1094 p1 = explode(getenv("MAKEFLAGS")); 1095 Main_ParseArgLine(p1); 1096 free(p1); 1097 #else 1098 Main_ParseArgLine(getenv("MAKE")); 1099 #endif 1100 1101 /* 1102 * Find where we are (now). 1103 * We take care of PWD for the automounter below... 1104 */ 1105 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1106 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1107 progname, strerror(errno)); 1108 exit(2); 1109 } 1110 1111 MainParseArgs(argc, argv); 1112 1113 if (enterFlag) 1114 printf("%s: Entering directory `%s'\n", progname, curdir); 1115 1116 /* 1117 * Verify that cwd is sane. 1118 */ 1119 if (stat(curdir, &sa) == -1) { 1120 (void)fprintf(stderr, "%s: %s: %s.\n", 1121 progname, curdir, strerror(errno)); 1122 exit(2); 1123 } 1124 1125 /* 1126 * All this code is so that we know where we are when we start up 1127 * on a different machine with pmake. 1128 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1129 * since the value of curdir can vary depending on how we got 1130 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1131 * or via subdir.mk in which case its likely a shell which does 1132 * not provide it. 1133 * So, to stop it breaking this case only, we ignore PWD if 1134 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1135 */ 1136 #ifndef NO_PWD_OVERRIDE 1137 if (!ignorePWD) { 1138 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1139 1140 if ((pwd = getenv("PWD")) != NULL && 1141 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1142 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1143 VAR_CMD, &ptmp2); 1144 1145 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1146 if (stat(pwd, &sb) == 0 && 1147 sa.st_ino == sb.st_ino && 1148 sa.st_dev == sb.st_dev) 1149 (void)strncpy(curdir, pwd, MAXPATHLEN); 1150 } 1151 } 1152 free(ptmp1); 1153 free(ptmp2); 1154 } 1155 #endif 1156 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1157 1158 /* 1159 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1160 * MAKEOBJDIR is set in the environment, try only that value 1161 * and fall back to .CURDIR if it does not exist. 1162 * 1163 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1164 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1165 * of these paths exist, just use .CURDIR. 1166 */ 1167 Dir_Init(curdir); 1168 (void)Main_SetObjdir("%s", curdir); 1169 1170 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1171 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1172 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1173 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1174 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1175 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1176 1177 /* 1178 * Initialize archive, target and suffix modules in preparation for 1179 * parsing the makefile(s) 1180 */ 1181 Arch_Init(); 1182 Targ_Init(); 1183 Suff_Init(); 1184 Trace_Init(tracefile); 1185 1186 DEFAULT = NULL; 1187 (void)time(&now); 1188 1189 Trace_Log(MAKESTART, NULL); 1190 1191 /* 1192 * Set up the .TARGETS variable to contain the list of targets to be 1193 * created. If none specified, make the variable empty -- the parser 1194 * will fill the thing in with the default or .MAIN target. 1195 */ 1196 if (!Lst_IsEmpty(create)) { 1197 LstNode ln; 1198 1199 for (ln = Lst_First(create); ln != NULL; 1200 ln = Lst_Succ(ln)) { 1201 char *name = (char *)Lst_Datum(ln); 1202 1203 Var_Append(".TARGETS", name, VAR_GLOBAL); 1204 } 1205 } else 1206 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1207 1208 1209 /* 1210 * If no user-supplied system path was given (through the -m option) 1211 * add the directories from the DEFSYSPATH (more than one may be given 1212 * as dir1:...:dirn) to the system include path. 1213 */ 1214 if (syspath == NULL || *syspath == '\0') 1215 syspath = defsyspath; 1216 else 1217 syspath = bmake_strdup(syspath); 1218 1219 for (start = syspath; *start != '\0'; start = cp) { 1220 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1221 continue; 1222 if (*cp == ':') { 1223 *cp++ = '\0'; 1224 } 1225 /* look for magic parent directory search string */ 1226 if (strncmp(".../", start, 4) != 0) { 1227 (void)Dir_AddDir(defIncPath, start); 1228 } else { 1229 if (Dir_FindHereOrAbove(curdir, start+4, 1230 found_path, sizeof(found_path))) { 1231 (void)Dir_AddDir(defIncPath, found_path); 1232 } 1233 } 1234 } 1235 if (syspath != defsyspath) 1236 free(syspath); 1237 1238 /* 1239 * Read in the built-in rules first, followed by the specified 1240 * makefile, if it was (makefile != NULL), or the default 1241 * makefile and Makefile, in that order, if it wasn't. 1242 */ 1243 if (!noBuiltins) { 1244 LstNode ln; 1245 1246 sysMkPath = Lst_Init(FALSE); 1247 Dir_Expand(_PATH_DEFSYSMK, 1248 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1249 sysMkPath); 1250 if (Lst_IsEmpty(sysMkPath)) 1251 Fatal("%s: no system rules (%s).", progname, 1252 _PATH_DEFSYSMK); 1253 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1254 if (ln == NULL) 1255 Fatal("%s: cannot open %s.", progname, 1256 (char *)Lst_Datum(ln)); 1257 } 1258 1259 if (!Lst_IsEmpty(makefiles)) { 1260 LstNode ln; 1261 1262 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1263 if (ln != NULL) 1264 Fatal("%s: cannot open %s.", progname, 1265 (char *)Lst_Datum(ln)); 1266 } else { 1267 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1268 VAR_CMD, VARF_WANTRES); 1269 if (p1) { 1270 (void)str2Lst_Append(makefiles, p1, NULL); 1271 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1272 free(p1); 1273 } 1274 } 1275 1276 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1277 if (!noBuiltins || !printVars) { 1278 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1279 VAR_CMD, VARF_WANTRES); 1280 doing_depend = TRUE; 1281 (void)ReadMakefile(makeDependfile, NULL); 1282 doing_depend = FALSE; 1283 } 1284 1285 if (enterFlagObj) 1286 printf("%s: Entering directory `%s'\n", progname, objdir); 1287 1288 MakeMode(NULL); 1289 1290 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1291 free(p1); 1292 1293 if (!forceJobs && !compatMake && 1294 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1295 char *value; 1296 int n; 1297 1298 value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES); 1299 n = strtol(value, NULL, 0); 1300 if (n < 1) { 1301 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1302 progname); 1303 exit(1); 1304 } 1305 if (n != maxJobs) { 1306 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1307 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1308 } 1309 maxJobs = n; 1310 maxJobTokens = maxJobs; 1311 forceJobs = TRUE; 1312 free(value); 1313 } 1314 1315 /* 1316 * Be compatible if user did not specify -j and did not explicitly 1317 * turned compatibility on 1318 */ 1319 if (!compatMake && !forceJobs) { 1320 compatMake = TRUE; 1321 } 1322 1323 if (!compatMake) 1324 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1325 if (DEBUG(JOB)) 1326 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1327 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1328 1329 if (!printVars) 1330 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1331 1332 /* 1333 * For compatibility, look at the directories in the VPATH variable 1334 * and add them to the search path, if the variable is defined. The 1335 * variable's value is in the same format as the PATH envariable, i.e. 1336 * <directory>:<directory>:<directory>... 1337 */ 1338 if (Var_Exists("VPATH", VAR_CMD)) { 1339 char *vpath, savec; 1340 /* 1341 * GCC stores string constants in read-only memory, but 1342 * Var_Subst will want to write this thing, so store it 1343 * in an array 1344 */ 1345 static char VPATH[] = "${VPATH}"; 1346 1347 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1348 path = vpath; 1349 do { 1350 /* skip to end of directory */ 1351 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1352 continue; 1353 /* Save terminator character so know when to stop */ 1354 savec = *cp; 1355 *cp = '\0'; 1356 /* Add directory to search path */ 1357 (void)Dir_AddDir(dirSearchPath, path); 1358 *cp = savec; 1359 path = cp + 1; 1360 } while (savec == ':'); 1361 free(vpath); 1362 } 1363 1364 /* 1365 * Now that all search paths have been read for suffixes et al, it's 1366 * time to add the default search path to their lists... 1367 */ 1368 Suff_DoPaths(); 1369 1370 /* 1371 * Propagate attributes through :: dependency lists. 1372 */ 1373 Targ_Propagate(); 1374 1375 /* print the initial graph, if the user requested it */ 1376 if (DEBUG(GRAPH1)) 1377 Targ_PrintGraph(1); 1378 1379 /* print the values of any variables requested by the user */ 1380 if (printVars) { 1381 LstNode ln; 1382 Boolean expandVars; 1383 1384 if (debugVflag) 1385 expandVars = FALSE; 1386 else 1387 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 1388 for (ln = Lst_First(variables); ln != NULL; 1389 ln = Lst_Succ(ln)) { 1390 char *var = (char *)Lst_Datum(ln); 1391 char *value; 1392 1393 if (strchr(var, '$')) { 1394 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 1395 VARF_WANTRES); 1396 } else if (expandVars) { 1397 char tmp[128]; 1398 1399 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp))) 1400 Fatal("%s: variable name too big: %s", 1401 progname, var); 1402 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 1403 VARF_WANTRES); 1404 } else { 1405 value = Var_Value(var, VAR_GLOBAL, &p1); 1406 } 1407 printf("%s\n", value ? value : ""); 1408 free(p1); 1409 } 1410 } else { 1411 /* 1412 * Have now read the entire graph and need to make a list of 1413 * targets to create. If none was given on the command line, 1414 * we consult the parsing module to find the main target(s) 1415 * to create. 1416 */ 1417 if (Lst_IsEmpty(create)) 1418 targs = Parse_MainName(); 1419 else 1420 targs = Targ_FindList(create, TARG_CREATE); 1421 1422 if (!compatMake) { 1423 /* 1424 * Initialize job module before traversing the graph 1425 * now that any .BEGIN and .END targets have been read. 1426 * This is done only if the -q flag wasn't given 1427 * (to prevent the .BEGIN from being executed should 1428 * it exist). 1429 */ 1430 if (!queryFlag) { 1431 Job_Init(); 1432 jobsRunning = TRUE; 1433 } 1434 1435 /* Traverse the graph, checking on all the targets */ 1436 outOfDate = Make_Run(targs); 1437 } else { 1438 /* 1439 * Compat_Init will take care of creating all the 1440 * targets as well as initializing the module. 1441 */ 1442 Compat_Run(targs); 1443 } 1444 } 1445 1446 #ifdef CLEANUP 1447 Lst_Destroy(targs, NULL); 1448 Lst_Destroy(variables, NULL); 1449 Lst_Destroy(makefiles, NULL); 1450 Lst_Destroy(create, (FreeProc *)free); 1451 #endif 1452 1453 /* print the graph now it's been processed if the user requested it */ 1454 if (DEBUG(GRAPH2)) 1455 Targ_PrintGraph(2); 1456 1457 Trace_Log(MAKEEND, 0); 1458 1459 if (enterFlagObj) 1460 printf("%s: Leaving directory `%s'\n", progname, objdir); 1461 if (enterFlag) 1462 printf("%s: Leaving directory `%s'\n", progname, curdir); 1463 1464 #ifdef USE_META 1465 meta_finish(); 1466 #endif 1467 Suff_End(); 1468 Targ_End(); 1469 Arch_End(); 1470 Var_End(); 1471 Parse_End(); 1472 Dir_End(); 1473 Job_End(); 1474 Trace_End(); 1475 1476 return outOfDate ? 1 : 0; 1477 } 1478 1479 /*- 1480 * ReadMakefile -- 1481 * Open and parse the given makefile. 1482 * 1483 * Results: 1484 * 0 if ok. -1 if couldn't open file. 1485 * 1486 * Side Effects: 1487 * lots 1488 */ 1489 static int 1490 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1491 { 1492 const char *fname = p; /* makefile to read */ 1493 int fd; 1494 size_t len = MAXPATHLEN; 1495 char *name, *path = bmake_malloc(len); 1496 1497 if (!strcmp(fname, "-")) { 1498 Parse_File(NULL /*stdin*/, -1); 1499 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1500 } else { 1501 /* if we've chdir'd, rebuild the path name */ 1502 if (strcmp(curdir, objdir) && *fname != '/') { 1503 size_t plen = strlen(curdir) + strlen(fname) + 2; 1504 if (len < plen) 1505 path = bmake_realloc(path, len = 2 * plen); 1506 1507 (void)snprintf(path, len, "%s/%s", curdir, fname); 1508 fd = open(path, O_RDONLY); 1509 if (fd != -1) { 1510 fname = path; 1511 goto found; 1512 } 1513 1514 /* If curdir failed, try objdir (ala .depend) */ 1515 plen = strlen(objdir) + strlen(fname) + 2; 1516 if (len < plen) 1517 path = bmake_realloc(path, len = 2 * plen); 1518 (void)snprintf(path, len, "%s/%s", objdir, fname); 1519 fd = open(path, O_RDONLY); 1520 if (fd != -1) { 1521 fname = path; 1522 goto found; 1523 } 1524 } else { 1525 fd = open(fname, O_RDONLY); 1526 if (fd != -1) 1527 goto found; 1528 } 1529 /* look in -I and system include directories. */ 1530 name = Dir_FindFile(fname, parseIncPath); 1531 if (!name) 1532 name = Dir_FindFile(fname, 1533 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1534 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1535 free(name); 1536 free(path); 1537 return(-1); 1538 } 1539 fname = name; 1540 /* 1541 * set the MAKEFILE variable desired by System V fans -- the 1542 * placement of the setting here means it gets set to the last 1543 * makefile specified, as it is set by SysV make. 1544 */ 1545 found: 1546 if (!doing_depend) 1547 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1548 Parse_File(fname, fd); 1549 } 1550 free(path); 1551 return(0); 1552 } 1553 1554 1555 1556 /*- 1557 * Cmd_Exec -- 1558 * Execute the command in cmd, and return the output of that command 1559 * in a string. 1560 * 1561 * Results: 1562 * A string containing the output of the command, or the empty string 1563 * If errnum is not NULL, it contains the reason for the command failure 1564 * 1565 * Side Effects: 1566 * The string must be freed by the caller. 1567 */ 1568 char * 1569 Cmd_Exec(const char *cmd, const char **errnum) 1570 { 1571 const char *args[4]; /* Args for invoking the shell */ 1572 int fds[2]; /* Pipe streams */ 1573 int cpid; /* Child PID */ 1574 int pid; /* PID from wait() */ 1575 char *res; /* result */ 1576 WAIT_T status; /* command exit status */ 1577 Buffer buf; /* buffer to store the result */ 1578 char *cp; 1579 int cc; /* bytes read, or -1 */ 1580 int savederr; /* saved errno */ 1581 1582 1583 *errnum = NULL; 1584 1585 if (!shellName) 1586 Shell_Init(); 1587 /* 1588 * Set up arguments for shell 1589 */ 1590 args[0] = shellName; 1591 args[1] = "-c"; 1592 args[2] = cmd; 1593 args[3] = NULL; 1594 1595 /* 1596 * Open a pipe for fetching its output 1597 */ 1598 if (pipe(fds) == -1) { 1599 *errnum = "Couldn't create pipe for \"%s\""; 1600 goto bad; 1601 } 1602 1603 /* 1604 * Fork 1605 */ 1606 switch (cpid = vFork()) { 1607 case 0: 1608 /* 1609 * Close input side of pipe 1610 */ 1611 (void)close(fds[0]); 1612 1613 /* 1614 * Duplicate the output stream to the shell's output, then 1615 * shut the extra thing down. Note we don't fetch the error 1616 * stream...why not? Why? 1617 */ 1618 (void)dup2(fds[1], 1); 1619 (void)close(fds[1]); 1620 1621 Var_ExportVars(); 1622 1623 (void)execv(shellPath, UNCONST(args)); 1624 _exit(1); 1625 /*NOTREACHED*/ 1626 1627 case -1: 1628 *errnum = "Couldn't exec \"%s\""; 1629 goto bad; 1630 1631 default: 1632 /* 1633 * No need for the writing half 1634 */ 1635 (void)close(fds[1]); 1636 1637 savederr = 0; 1638 Buf_Init(&buf, 0); 1639 1640 do { 1641 char result[BUFSIZ]; 1642 cc = read(fds[0], result, sizeof(result)); 1643 if (cc > 0) 1644 Buf_AddBytes(&buf, cc, result); 1645 } 1646 while (cc > 0 || (cc == -1 && errno == EINTR)); 1647 if (cc == -1) 1648 savederr = errno; 1649 1650 /* 1651 * Close the input side of the pipe. 1652 */ 1653 (void)close(fds[0]); 1654 1655 /* 1656 * Wait for the process to exit. 1657 */ 1658 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1659 JobReapChild(pid, status, FALSE); 1660 continue; 1661 } 1662 cc = Buf_Size(&buf); 1663 res = Buf_Destroy(&buf, FALSE); 1664 1665 if (savederr != 0) 1666 *errnum = "Couldn't read shell's output for \"%s\""; 1667 1668 if (WIFSIGNALED(status)) 1669 *errnum = "\"%s\" exited on a signal"; 1670 else if (WEXITSTATUS(status) != 0) 1671 *errnum = "\"%s\" returned non-zero status"; 1672 1673 /* 1674 * Null-terminate the result, convert newlines to spaces and 1675 * install it in the variable. 1676 */ 1677 res[cc] = '\0'; 1678 cp = &res[cc]; 1679 1680 if (cc > 0 && *--cp == '\n') { 1681 /* 1682 * A final newline is just stripped 1683 */ 1684 *cp-- = '\0'; 1685 } 1686 while (cp >= res) { 1687 if (*cp == '\n') { 1688 *cp = ' '; 1689 } 1690 cp--; 1691 } 1692 break; 1693 } 1694 return res; 1695 bad: 1696 res = bmake_malloc(1); 1697 *res = '\0'; 1698 return res; 1699 } 1700 1701 /*- 1702 * Error -- 1703 * Print an error message given its format. 1704 * 1705 * Results: 1706 * None. 1707 * 1708 * Side Effects: 1709 * The message is printed. 1710 */ 1711 /* VARARGS */ 1712 void 1713 Error(const char *fmt, ...) 1714 { 1715 va_list ap; 1716 FILE *err_file; 1717 1718 err_file = debug_file; 1719 if (err_file == stdout) 1720 err_file = stderr; 1721 (void)fflush(stdout); 1722 for (;;) { 1723 va_start(ap, fmt); 1724 fprintf(err_file, "%s: ", progname); 1725 (void)vfprintf(err_file, fmt, ap); 1726 va_end(ap); 1727 (void)fprintf(err_file, "\n"); 1728 (void)fflush(err_file); 1729 if (err_file == stderr) 1730 break; 1731 err_file = stderr; 1732 } 1733 } 1734 1735 /*- 1736 * Fatal -- 1737 * Produce a Fatal error message. If jobs are running, waits for them 1738 * to finish. 1739 * 1740 * Results: 1741 * None 1742 * 1743 * Side Effects: 1744 * The program exits 1745 */ 1746 /* VARARGS */ 1747 void 1748 Fatal(const char *fmt, ...) 1749 { 1750 va_list ap; 1751 1752 va_start(ap, fmt); 1753 if (jobsRunning) 1754 Job_Wait(); 1755 1756 (void)fflush(stdout); 1757 (void)vfprintf(stderr, fmt, ap); 1758 va_end(ap); 1759 (void)fprintf(stderr, "\n"); 1760 (void)fflush(stderr); 1761 1762 PrintOnError(NULL, NULL); 1763 1764 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1765 Targ_PrintGraph(2); 1766 Trace_Log(MAKEERROR, 0); 1767 exit(2); /* Not 1 so -q can distinguish error */ 1768 } 1769 1770 /* 1771 * Punt -- 1772 * Major exception once jobs are being created. Kills all jobs, prints 1773 * a message and exits. 1774 * 1775 * Results: 1776 * None 1777 * 1778 * Side Effects: 1779 * All children are killed indiscriminately and the program Lib_Exits 1780 */ 1781 /* VARARGS */ 1782 void 1783 Punt(const char *fmt, ...) 1784 { 1785 va_list ap; 1786 1787 va_start(ap, fmt); 1788 (void)fflush(stdout); 1789 (void)fprintf(stderr, "%s: ", progname); 1790 (void)vfprintf(stderr, fmt, ap); 1791 va_end(ap); 1792 (void)fprintf(stderr, "\n"); 1793 (void)fflush(stderr); 1794 1795 PrintOnError(NULL, NULL); 1796 1797 DieHorribly(); 1798 } 1799 1800 /*- 1801 * DieHorribly -- 1802 * Exit without giving a message. 1803 * 1804 * Results: 1805 * None 1806 * 1807 * Side Effects: 1808 * A big one... 1809 */ 1810 void 1811 DieHorribly(void) 1812 { 1813 if (jobsRunning) 1814 Job_AbortAll(); 1815 if (DEBUG(GRAPH2)) 1816 Targ_PrintGraph(2); 1817 Trace_Log(MAKEERROR, 0); 1818 exit(2); /* Not 1, so -q can distinguish error */ 1819 } 1820 1821 /* 1822 * Finish -- 1823 * Called when aborting due to errors in child shell to signal 1824 * abnormal exit. 1825 * 1826 * Results: 1827 * None 1828 * 1829 * Side Effects: 1830 * The program exits 1831 */ 1832 void 1833 Finish(int errors) 1834 /* number of errors encountered in Make_Make */ 1835 { 1836 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1837 } 1838 1839 /* 1840 * eunlink -- 1841 * Remove a file carefully, avoiding directories. 1842 */ 1843 int 1844 eunlink(const char *file) 1845 { 1846 struct stat st; 1847 1848 if (lstat(file, &st) == -1) 1849 return -1; 1850 1851 if (S_ISDIR(st.st_mode)) { 1852 errno = EISDIR; 1853 return -1; 1854 } 1855 return unlink(file); 1856 } 1857 1858 /* 1859 * execError -- 1860 * Print why exec failed, avoiding stdio. 1861 */ 1862 void 1863 execError(const char *af, const char *av) 1864 { 1865 #ifdef USE_IOVEC 1866 int i = 0; 1867 struct iovec iov[8]; 1868 #define IOADD(s) \ 1869 (void)(iov[i].iov_base = UNCONST(s), \ 1870 iov[i].iov_len = strlen(iov[i].iov_base), \ 1871 i++) 1872 #else 1873 #define IOADD(s) (void)write(2, s, strlen(s)) 1874 #endif 1875 1876 IOADD(progname); 1877 IOADD(": "); 1878 IOADD(af); 1879 IOADD("("); 1880 IOADD(av); 1881 IOADD(") failed ("); 1882 IOADD(strerror(errno)); 1883 IOADD(")\n"); 1884 1885 #ifdef USE_IOVEC 1886 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1887 continue; 1888 #endif 1889 } 1890 1891 /* 1892 * usage -- 1893 * exit with usage message 1894 */ 1895 static void 1896 usage(void) 1897 { 1898 char *p; 1899 if ((p = strchr(progname, '[')) != NULL) 1900 *p = '\0'; 1901 1902 (void)fprintf(stderr, 1903 "usage: %s [-BeikNnqrstWwX] \n\ 1904 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1905 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1906 [-V variable] [variable=value] [target ...]\n", progname); 1907 exit(2); 1908 } 1909 1910 1911 /* 1912 * realpath(3) can get expensive, cache results... 1913 */ 1914 char * 1915 cached_realpath(const char *pathname, char *resolved) 1916 { 1917 static GNode *cache; 1918 char *rp, *cp; 1919 1920 if (!pathname || !pathname[0]) 1921 return NULL; 1922 1923 if (!cache) { 1924 cache = Targ_NewGN("Realpath"); 1925 #ifndef DEBUG_REALPATH_CACHE 1926 cache->flags = INTERNAL; 1927 #endif 1928 } 1929 if (resolved == NULL && strcmp(pathname, ".OBJDIR") == 0) { 1930 /* purge any relative paths */ 1931 Hash_Entry *he, *nhe; 1932 Hash_Search hs; 1933 1934 he = Hash_EnumFirst(&cache->context, &hs); 1935 while (he) { 1936 nhe = Hash_EnumNext(&hs); 1937 if (he->name[0] != '/') { 1938 if (DEBUG(DIR)) 1939 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1940 Hash_DeleteEntry(&cache->context, he); 1941 } 1942 he = nhe; 1943 } 1944 return NULL; 1945 } 1946 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1947 /* a hit */ 1948 strlcpy(resolved, rp, MAXPATHLEN); 1949 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1950 Var_Set(pathname, rp, cache, 0); 1951 } 1952 free(cp); 1953 return rp ? resolved : NULL; 1954 } 1955 1956 int 1957 PrintAddr(void *a, void *b) 1958 { 1959 printf("%lx ", (unsigned long) a); 1960 return b ? 0 : 0; 1961 } 1962 1963 1964 static int 1965 addErrorCMD(void *cmdp, void *gnp MAKE_ATTR_UNUSED) 1966 { 1967 if (cmdp == NULL) 1968 return 1; /* stop */ 1969 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 1970 return 0; 1971 } 1972 1973 void 1974 PrintOnError(GNode *gn, const char *s) 1975 { 1976 static GNode *en = NULL; 1977 char tmp[64]; 1978 char *cp; 1979 1980 if (s) 1981 printf("%s", s); 1982 1983 printf("\n%s: stopped in %s\n", progname, curdir); 1984 1985 if (en) 1986 return; /* we've been here! */ 1987 if (gn) { 1988 /* 1989 * We can print this even if there is no .ERROR target. 1990 */ 1991 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 1992 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 1993 Lst_ForEach(gn->commands, addErrorCMD, gn); 1994 } 1995 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 1996 sizeof(tmp) - 1); 1997 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 1998 if (cp) { 1999 if (*cp) 2000 printf("%s", cp); 2001 free(cp); 2002 } 2003 fflush(stdout); 2004 2005 /* 2006 * Finally, see if there is a .ERROR target, and run it if so. 2007 */ 2008 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2009 if (en) { 2010 en->type |= OP_SPECIAL; 2011 Compat_Make(en, en); 2012 } 2013 } 2014 2015 void 2016 Main_ExportMAKEFLAGS(Boolean first) 2017 { 2018 static int once = 1; 2019 char tmp[64]; 2020 char *s; 2021 2022 if (once != first) 2023 return; 2024 once = 0; 2025 2026 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 2027 sizeof(tmp)); 2028 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES); 2029 if (s && *s) { 2030 #ifdef POSIX 2031 setenv("MAKEFLAGS", s, 1); 2032 #else 2033 setenv("MAKE", s, 1); 2034 #endif 2035 } 2036 } 2037 2038 char * 2039 getTmpdir(void) 2040 { 2041 static char *tmpdir = NULL; 2042 2043 if (!tmpdir) { 2044 struct stat st; 2045 2046 /* 2047 * Honor $TMPDIR but only if it is valid. 2048 * Ensure it ends with /. 2049 */ 2050 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2051 VARF_WANTRES); 2052 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2053 free(tmpdir); 2054 tmpdir = bmake_strdup(_PATH_TMP); 2055 } 2056 } 2057 return tmpdir; 2058 } 2059 2060 /* 2061 * Create and open a temp file using "pattern". 2062 * If "fnamep" is provided set it to a copy of the filename created. 2063 * Otherwise unlink the file once open. 2064 */ 2065 int 2066 mkTempFile(const char *pattern, char **fnamep) 2067 { 2068 static char *tmpdir = NULL; 2069 char tfile[MAXPATHLEN]; 2070 int fd; 2071 2072 if (!pattern) 2073 pattern = TMPPAT; 2074 if (!tmpdir) 2075 tmpdir = getTmpdir(); 2076 if (pattern[0] == '/') { 2077 snprintf(tfile, sizeof(tfile), "%s", pattern); 2078 } else { 2079 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2080 } 2081 if ((fd = mkstemp(tfile)) < 0) 2082 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2083 if (fnamep) { 2084 *fnamep = bmake_strdup(tfile); 2085 } else { 2086 unlink(tfile); /* we just want the descriptor */ 2087 } 2088 return fd; 2089 } 2090 2091 /* 2092 * Convert a string representation of a boolean. 2093 * Anything that looks like "No", "False", "Off", "0" etc, 2094 * is FALSE, otherwise TRUE. 2095 */ 2096 Boolean 2097 s2Boolean(const char *s, Boolean bf) 2098 { 2099 if (s) { 2100 switch(*s) { 2101 case '\0': /* not set - the default wins */ 2102 break; 2103 case '0': 2104 case 'F': 2105 case 'f': 2106 case 'N': 2107 case 'n': 2108 bf = FALSE; 2109 break; 2110 case 'O': 2111 case 'o': 2112 switch (s[1]) { 2113 case 'F': 2114 case 'f': 2115 bf = FALSE; 2116 break; 2117 default: 2118 bf = TRUE; 2119 break; 2120 } 2121 break; 2122 default: 2123 bf = TRUE; 2124 break; 2125 } 2126 } 2127 return (bf); 2128 } 2129 2130 /* 2131 * Return a Boolean based on setting of a knob. 2132 * 2133 * If the knob is not set, the supplied default is the return value. 2134 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2135 * is FALSE, otherwise TRUE. 2136 */ 2137 Boolean 2138 getBoolean(const char *name, Boolean bf) 2139 { 2140 char tmp[64]; 2141 char *cp; 2142 2143 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2144 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2145 2146 if (cp) { 2147 bf = s2Boolean(cp, bf); 2148 free(cp); 2149 } 2150 } 2151 return (bf); 2152 } 2153