main.c revision 1.266
1 /* $NetBSD: main.c,v 1.266 2017/06/17 15:26:50 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 1.266 2017/06/17 15:26:50 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 1.266 2017/06/17 15:26:50 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 #ifdef MAKE_NATIVE 122 #include <sys/sysctl.h> 123 #endif 124 #include <sys/utsname.h> 125 #include <sys/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 Lst create; /* Targets to be made */ 151 time_t now; /* Time at start of make */ 152 GNode *DEFAULT; /* .DEFAULT node */ 153 Boolean allPrecious; /* .PRECIOUS given on line by itself */ 154 Boolean deleteOnError; /* .DELETE_ON_ERROR: set */ 155 156 static Boolean noBuiltins; /* -r flag */ 157 static Lst makefiles; /* ordered list of makefiles to read */ 158 static Boolean printVars; /* print value of one or more vars */ 159 static Lst variables; /* list of variables to print */ 160 int maxJobs; /* -j argument */ 161 static int maxJobTokens; /* -j argument */ 162 Boolean compatMake; /* -B argument */ 163 int debug; /* -d argument */ 164 Boolean debugVflag; /* -dV */ 165 Boolean noExecute; /* -n flag */ 166 Boolean noRecursiveExecute; /* -N flag */ 167 Boolean keepgoing; /* -k flag */ 168 Boolean queryFlag; /* -q flag */ 169 Boolean touchFlag; /* -t flag */ 170 Boolean enterFlag; /* -w flag */ 171 Boolean enterFlagObj; /* -w and objdir != srcdir */ 172 Boolean ignoreErrors; /* -i flag */ 173 Boolean beSilent; /* -s flag */ 174 Boolean oldVars; /* variable substitution style */ 175 Boolean checkEnvFirst; /* -e flag */ 176 Boolean parseWarnFatal; /* -W flag */ 177 Boolean jobServer; /* -J flag */ 178 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 179 Boolean varNoExportEnv; /* -X flag */ 180 Boolean doing_depend; /* Set while reading .depend */ 181 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 182 static const char * tracefile; 183 static void MainParseArgs(int, char **); 184 static int ReadMakefile(const void *, const void *); 185 static void usage(void) MAKE_ATTR_DEAD; 186 static void purge_cached_realpaths(void); 187 188 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 189 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 190 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 191 char *progname; /* the program name */ 192 char *makeDependfile; 193 pid_t myPid; 194 int makelevel; 195 196 Boolean forceJobs = FALSE; 197 198 extern Lst parseIncPath; 199 200 /* 201 * For compatibility with the POSIX version of MAKEFLAGS that includes 202 * all the options with out -, convert flags to -f -l -a -g -s. 203 */ 204 static char * 205 explode(const char *flags) 206 { 207 size_t len; 208 char *nf, *st; 209 const char *f; 210 211 if (flags == NULL) 212 return NULL; 213 214 for (f = flags; *f; f++) 215 if (!isalpha((unsigned char)*f)) 216 break; 217 218 if (*f) 219 return bmake_strdup(flags); 220 221 len = strlen(flags); 222 st = nf = bmake_malloc(len * 3 + 1); 223 while (*flags) { 224 *nf++ = '-'; 225 *nf++ = *flags++; 226 *nf++ = ' '; 227 } 228 *nf = '\0'; 229 return st; 230 } 231 232 static void 233 parse_debug_options(const char *argvalue) 234 { 235 const char *modules; 236 const char *mode; 237 char *fname; 238 int len; 239 240 for (modules = argvalue; *modules; ++modules) { 241 switch (*modules) { 242 case 'A': 243 debug = ~0; 244 break; 245 case 'a': 246 debug |= DEBUG_ARCH; 247 break; 248 case 'C': 249 debug |= DEBUG_CWD; 250 break; 251 case 'c': 252 debug |= DEBUG_COND; 253 break; 254 case 'd': 255 debug |= DEBUG_DIR; 256 break; 257 case 'e': 258 debug |= DEBUG_ERROR; 259 break; 260 case 'f': 261 debug |= DEBUG_FOR; 262 break; 263 case 'g': 264 if (modules[1] == '1') { 265 debug |= DEBUG_GRAPH1; 266 ++modules; 267 } 268 else if (modules[1] == '2') { 269 debug |= DEBUG_GRAPH2; 270 ++modules; 271 } 272 else if (modules[1] == '3') { 273 debug |= DEBUG_GRAPH3; 274 ++modules; 275 } 276 break; 277 case 'j': 278 debug |= DEBUG_JOB; 279 break; 280 case 'l': 281 debug |= DEBUG_LOUD; 282 break; 283 case 'M': 284 debug |= DEBUG_META; 285 break; 286 case 'm': 287 debug |= DEBUG_MAKE; 288 break; 289 case 'n': 290 debug |= DEBUG_SCRIPT; 291 break; 292 case 'p': 293 debug |= DEBUG_PARSE; 294 break; 295 case 's': 296 debug |= DEBUG_SUFF; 297 break; 298 case 't': 299 debug |= DEBUG_TARG; 300 break; 301 case 'V': 302 debugVflag = TRUE; 303 break; 304 case 'v': 305 debug |= DEBUG_VAR; 306 break; 307 case 'x': 308 debug |= DEBUG_SHELL; 309 break; 310 case 'F': 311 if (debug_file != stdout && debug_file != stderr) 312 fclose(debug_file); 313 if (*++modules == '+') { 314 modules++; 315 mode = "a"; 316 } else 317 mode = "w"; 318 if (strcmp(modules, "stdout") == 0) { 319 debug_file = stdout; 320 goto debug_setbuf; 321 } 322 if (strcmp(modules, "stderr") == 0) { 323 debug_file = stderr; 324 goto debug_setbuf; 325 } 326 len = strlen(modules); 327 fname = bmake_malloc(len + 20); 328 memcpy(fname, modules, len + 1); 329 /* Let the filename be modified by the pid */ 330 if (strcmp(fname + len - 3, ".%d") == 0) 331 snprintf(fname + len - 2, 20, "%d", getpid()); 332 debug_file = fopen(fname, mode); 333 if (!debug_file) { 334 fprintf(stderr, "Cannot open debug file %s\n", 335 fname); 336 usage(); 337 } 338 free(fname); 339 goto debug_setbuf; 340 default: 341 (void)fprintf(stderr, 342 "%s: illegal argument to d option -- %c\n", 343 progname, *modules); 344 usage(); 345 } 346 } 347 debug_setbuf: 348 /* 349 * Make the debug_file unbuffered, and make 350 * stdout line buffered (unless debugfile == stdout). 351 */ 352 setvbuf(debug_file, NULL, _IONBF, 0); 353 if (debug_file != stdout) { 354 setvbuf(stdout, NULL, _IOLBF, 0); 355 } 356 } 357 358 /* 359 * does path contain any relative components 360 */ 361 static int 362 is_relpath(const char *path) 363 { 364 const char *cp; 365 366 if (path[0] != '/') 367 return TRUE; 368 cp = path; 369 do { 370 cp = strstr(cp, "/."); 371 if (!cp) 372 break; 373 cp += 2; 374 if (cp[0] == '/' || cp[0] == '\0') 375 return TRUE; 376 else if (cp[0] == '.') { 377 if (cp[1] == '/' || cp[1] == '\0') 378 return TRUE; 379 } 380 } while (cp); 381 return FALSE; 382 } 383 384 /*- 385 * MainParseArgs -- 386 * Parse a given argument vector. Called from main() and from 387 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 388 * 389 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 390 * 391 * Results: 392 * None 393 * 394 * Side Effects: 395 * Various global and local flags will be set depending on the flags 396 * given 397 */ 398 static void 399 MainParseArgs(int argc, char **argv) 400 { 401 char *p; 402 int c = '?'; 403 int arginc; 404 char *argvalue; 405 const char *getopt_def; 406 struct stat sa, sb; 407 char *optscan; 408 Boolean inOption, dashDash = FALSE; 409 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 410 411 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw" 412 /* Can't actually use getopt(3) because rescanning is not portable */ 413 414 getopt_def = OPTFLAGS; 415 rearg: 416 inOption = FALSE; 417 optscan = NULL; 418 while(argc > 1) { 419 char *getopt_spec; 420 if(!inOption) 421 optscan = argv[1]; 422 c = *optscan++; 423 arginc = 0; 424 if(inOption) { 425 if(c == '\0') { 426 ++argv; 427 --argc; 428 inOption = FALSE; 429 continue; 430 } 431 } else { 432 if (c != '-' || dashDash) 433 break; 434 inOption = TRUE; 435 c = *optscan++; 436 } 437 /* '-' found at some earlier point */ 438 getopt_spec = strchr(getopt_def, c); 439 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 440 /* -<something> found, and <something> should have an arg */ 441 inOption = FALSE; 442 arginc = 1; 443 argvalue = optscan; 444 if(*argvalue == '\0') { 445 if (argc < 3) 446 goto noarg; 447 argvalue = argv[2]; 448 arginc = 2; 449 } 450 } else { 451 argvalue = NULL; 452 } 453 switch(c) { 454 case '\0': 455 arginc = 1; 456 inOption = FALSE; 457 break; 458 case 'B': 459 compatMake = TRUE; 460 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 461 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0); 462 break; 463 case 'C': 464 if (chdir(argvalue) == -1) { 465 (void)fprintf(stderr, 466 "%s: chdir %s: %s\n", 467 progname, argvalue, 468 strerror(errno)); 469 exit(1); 470 } 471 if (getcwd(curdir, MAXPATHLEN) == NULL) { 472 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 473 exit(2); 474 } 475 if (!is_relpath(argvalue) && 476 stat(argvalue, &sa) != -1 && 477 stat(curdir, &sb) != -1 && 478 sa.st_ino == sb.st_ino && 479 sa.st_dev == sb.st_dev) 480 strncpy(curdir, argvalue, MAXPATHLEN); 481 ignorePWD = TRUE; 482 break; 483 case 'D': 484 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 485 Var_Set(argvalue, "1", VAR_GLOBAL, 0); 486 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 487 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 488 break; 489 case 'I': 490 if (argvalue == NULL) goto noarg; 491 Parse_AddIncludeDir(argvalue); 492 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 493 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 494 break; 495 case 'J': 496 if (argvalue == NULL) goto noarg; 497 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 498 (void)fprintf(stderr, 499 "%s: internal error -- J option malformed (%s)\n", 500 progname, argvalue); 501 usage(); 502 } 503 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 504 (fcntl(jp_1, F_GETFD, 0) < 0)) { 505 #if 0 506 (void)fprintf(stderr, 507 "%s: ###### warning -- J descriptors were closed!\n", 508 progname); 509 exit(2); 510 #endif 511 jp_0 = -1; 512 jp_1 = -1; 513 compatMake = TRUE; 514 } else { 515 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 516 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 517 jobServer = TRUE; 518 } 519 break; 520 case 'N': 521 noExecute = TRUE; 522 noRecursiveExecute = TRUE; 523 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 524 break; 525 case 'S': 526 keepgoing = FALSE; 527 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 528 break; 529 case 'T': 530 if (argvalue == NULL) goto noarg; 531 tracefile = bmake_strdup(argvalue); 532 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 533 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 534 break; 535 case 'V': 536 if (argvalue == NULL) goto noarg; 537 printVars = TRUE; 538 (void)Lst_AtEnd(variables, argvalue); 539 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 540 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 541 break; 542 case 'W': 543 parseWarnFatal = TRUE; 544 break; 545 case 'X': 546 varNoExportEnv = TRUE; 547 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 548 break; 549 case 'd': 550 if (argvalue == NULL) goto noarg; 551 /* If '-d-opts' don't pass to children */ 552 if (argvalue[0] == '-') 553 argvalue++; 554 else { 555 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 556 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 557 } 558 parse_debug_options(argvalue); 559 break; 560 case 'e': 561 checkEnvFirst = TRUE; 562 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 563 break; 564 case 'f': 565 if (argvalue == NULL) goto noarg; 566 (void)Lst_AtEnd(makefiles, argvalue); 567 break; 568 case 'i': 569 ignoreErrors = TRUE; 570 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 571 break; 572 case 'j': 573 if (argvalue == NULL) goto noarg; 574 forceJobs = TRUE; 575 maxJobs = strtol(argvalue, &p, 0); 576 if (*p != '\0' || maxJobs < 1) { 577 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 578 progname); 579 exit(1); 580 } 581 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 582 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 583 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0); 584 maxJobTokens = maxJobs; 585 break; 586 case 'k': 587 keepgoing = TRUE; 588 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 589 break; 590 case 'm': 591 if (argvalue == NULL) goto noarg; 592 /* look for magic parent directory search string */ 593 if (strncmp(".../", argvalue, 4) == 0) { 594 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 595 found_path, sizeof(found_path))) 596 break; /* nothing doing */ 597 (void)Dir_AddDir(sysIncPath, found_path); 598 } else { 599 (void)Dir_AddDir(sysIncPath, argvalue); 600 } 601 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 602 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 603 break; 604 case 'n': 605 noExecute = TRUE; 606 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 607 break; 608 case 'q': 609 queryFlag = TRUE; 610 /* Kind of nonsensical, wot? */ 611 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 612 break; 613 case 'r': 614 noBuiltins = TRUE; 615 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 616 break; 617 case 's': 618 beSilent = TRUE; 619 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 620 break; 621 case 't': 622 touchFlag = TRUE; 623 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 624 break; 625 case 'w': 626 enterFlag = TRUE; 627 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 628 break; 629 case '-': 630 dashDash = TRUE; 631 break; 632 default: 633 case '?': 634 usage(); 635 } 636 argv += arginc; 637 argc -= arginc; 638 } 639 640 oldVars = TRUE; 641 642 /* 643 * See if the rest of the arguments are variable assignments and 644 * perform them if so. Else take them to be targets and stuff them 645 * on the end of the "create" list. 646 */ 647 for (; argc > 1; ++argv, --argc) 648 if (Parse_IsVar(argv[1])) { 649 Parse_DoVar(argv[1], VAR_CMD); 650 } else { 651 if (!*argv[1]) 652 Punt("illegal (null) argument."); 653 if (*argv[1] == '-' && !dashDash) 654 goto rearg; 655 (void)Lst_AtEnd(create, bmake_strdup(argv[1])); 656 } 657 658 return; 659 noarg: 660 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 661 progname, c); 662 usage(); 663 } 664 665 /*- 666 * Main_ParseArgLine -- 667 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 668 * is encountered and by main() when reading the .MAKEFLAGS envariable. 669 * Takes a line of arguments and breaks it into its 670 * component words and passes those words and the number of them to the 671 * MainParseArgs function. 672 * The line should have all its leading whitespace removed. 673 * 674 * Input: 675 * line Line to fracture 676 * 677 * Results: 678 * None 679 * 680 * Side Effects: 681 * Only those that come from the various arguments. 682 */ 683 void 684 Main_ParseArgLine(const char *line) 685 { 686 char **argv; /* Manufactured argument vector */ 687 int argc; /* Number of arguments in argv */ 688 char *args; /* Space used by the args */ 689 char *buf, *p1; 690 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 691 size_t len; 692 693 if (line == NULL) 694 return; 695 for (; *line == ' '; ++line) 696 continue; 697 if (!*line) 698 return; 699 700 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2); 701 (void)snprintf(buf, len, "%s %s", argv0, line); 702 free(p1); 703 704 argv = brk_string(buf, &argc, TRUE, &args); 705 if (argv == NULL) { 706 Error("Unterminated quoted string [%s]", buf); 707 free(buf); 708 return; 709 } 710 free(buf); 711 MainParseArgs(argc, argv); 712 713 free(args); 714 free(argv); 715 } 716 717 Boolean 718 Main_SetObjdir(const char *fmt, ...) 719 { 720 struct stat sb; 721 char *path; 722 char buf[MAXPATHLEN + 1]; 723 char buf2[MAXPATHLEN + 1]; 724 Boolean rc = FALSE; 725 va_list ap; 726 727 va_start(ap, fmt); 728 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 729 va_end(ap); 730 731 if (path[0] != '/') { 732 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 733 path = buf2; 734 } 735 736 /* look for the directory and try to chdir there */ 737 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 738 if (chdir(path)) { 739 (void)fprintf(stderr, "make warning: %s: %s.\n", 740 path, strerror(errno)); 741 } else { 742 strncpy(objdir, path, MAXPATHLEN); 743 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0); 744 setenv("PWD", objdir, 1); 745 Dir_InitDot(); 746 purge_cached_realpaths(); 747 rc = TRUE; 748 if (enterFlag && strcmp(objdir, curdir) != 0) 749 enterFlagObj = TRUE; 750 } 751 } 752 753 return rc; 754 } 755 756 static Boolean 757 Main_SetVarObjdir(const char *var, const char *suffix) 758 { 759 char *p, *path, *xpath; 760 761 if ((path = Var_Value(var, VAR_CMD, &p)) == NULL) 762 return FALSE; 763 764 /* expand variable substitutions */ 765 if (strchr(path, '$') != 0) 766 xpath = Var_Subst(NULL, path, VAR_GLOBAL, VARF_WANTRES); 767 else 768 xpath = path; 769 770 (void)Main_SetObjdir("%s%s", xpath, suffix); 771 772 if (xpath != path) 773 free(xpath); 774 free(p); 775 return TRUE; 776 } 777 778 /*- 779 * ReadAllMakefiles -- 780 * wrapper around ReadMakefile() to read all. 781 * 782 * Results: 783 * TRUE if ok, FALSE on error 784 */ 785 static int 786 ReadAllMakefiles(const void *p, const void *q) 787 { 788 return (ReadMakefile(p, q) == 0); 789 } 790 791 int 792 str2Lst_Append(Lst lp, char *str, const char *sep) 793 { 794 char *cp; 795 int n; 796 797 if (!sep) 798 sep = " \t"; 799 800 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 801 (void)Lst_AtEnd(lp, cp); 802 n++; 803 } 804 return (n); 805 } 806 807 #ifdef SIGINFO 808 /*ARGSUSED*/ 809 static void 810 siginfo(int signo MAKE_ATTR_UNUSED) 811 { 812 char dir[MAXPATHLEN]; 813 char str[2 * MAXPATHLEN]; 814 int len; 815 if (getcwd(dir, sizeof(dir)) == NULL) 816 return; 817 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 818 if (len > 0) 819 (void)write(STDERR_FILENO, str, (size_t)len); 820 } 821 #endif 822 823 /* 824 * Allow makefiles some control over the mode we run in. 825 */ 826 void 827 MakeMode(const char *mode) 828 { 829 char *mp = NULL; 830 831 if (!mode) 832 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", 833 VAR_GLOBAL, VARF_WANTRES); 834 835 if (mode && *mode) { 836 if (strstr(mode, "compat")) { 837 compatMake = TRUE; 838 forceJobs = FALSE; 839 } 840 #if USE_META 841 if (strstr(mode, "meta")) 842 meta_mode_init(mode); 843 #endif 844 } 845 846 free(mp); 847 } 848 849 static void 850 doPrintVars(void) 851 { 852 LstNode ln; 853 Boolean expandVars; 854 855 if (debugVflag) 856 expandVars = FALSE; 857 else 858 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 859 860 for (ln = Lst_First(variables); ln != NULL; 861 ln = Lst_Succ(ln)) { 862 char *var = (char *)Lst_Datum(ln); 863 char *value; 864 char *p1; 865 866 if (strchr(var, '$')) { 867 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, VARF_WANTRES); 868 } else if (expandVars) { 869 char tmp[128]; 870 int len = snprintf(tmp, sizeof(tmp), "${%s}", var); 871 872 if (len >= (int)sizeof(tmp)) 873 Fatal("%s: variable name too big: %s", 874 progname, var); 875 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 876 VARF_WANTRES); 877 } else { 878 value = Var_Value(var, VAR_GLOBAL, &p1); 879 } 880 printf("%s\n", value ? value : ""); 881 free(p1); 882 } 883 } 884 885 static Boolean 886 runTargets(void) 887 { 888 Lst targs; /* target nodes to create -- passed to Make_Init */ 889 Boolean outOfDate; /* FALSE if all targets up to date */ 890 891 /* 892 * Have now read the entire graph and need to make a list of 893 * targets to create. If none was given on the command line, 894 * we consult the parsing module to find the main target(s) 895 * to create. 896 */ 897 if (Lst_IsEmpty(create)) 898 targs = Parse_MainName(); 899 else 900 targs = Targ_FindList(create, TARG_CREATE); 901 902 if (!compatMake) { 903 /* 904 * Initialize job module before traversing the graph 905 * now that any .BEGIN and .END targets have been read. 906 * This is done only if the -q flag wasn't given 907 * (to prevent the .BEGIN from being executed should 908 * it exist). 909 */ 910 if (!queryFlag) { 911 Job_Init(); 912 jobsRunning = TRUE; 913 } 914 915 /* Traverse the graph, checking on all the targets */ 916 outOfDate = Make_Run(targs); 917 } else { 918 /* 919 * Compat_Init will take care of creating all the 920 * targets as well as initializing the module. 921 */ 922 Compat_Run(targs); 923 outOfDate = FALSE; 924 } 925 Lst_Destroy(targs, NULL); 926 return outOfDate; 927 } 928 929 /*- 930 * main -- 931 * The main function, for obvious reasons. Initializes variables 932 * and a few modules, then parses the arguments give it in the 933 * environment and on the command line. Reads the system makefile 934 * followed by either Makefile, makefile or the file given by the 935 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 936 * flags it has received by then uses either the Make or the Compat 937 * module to create the initial list of targets. 938 * 939 * Results: 940 * If -q was given, exits -1 if anything was out-of-date. Else it exits 941 * 0. 942 * 943 * Side Effects: 944 * The program exits when done. Targets are created. etc. etc. etc. 945 */ 946 int 947 main(int argc, char **argv) 948 { 949 Boolean outOfDate; /* FALSE if all targets up to date */ 950 struct stat sb, sa; 951 char *p1, *path; 952 char mdpath[MAXPATHLEN]; 953 const char *machine = getenv("MACHINE"); 954 const char *machine_arch = getenv("MACHINE_ARCH"); 955 char *syspath = getenv("MAKESYSPATH"); 956 Lst sysMkPath; /* Path of sys.mk */ 957 char *cp = NULL, *start; 958 /* avoid faults on read-only strings */ 959 static char defsyspath[] = _PATH_DEFSYSPATH; 960 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 961 struct timeval rightnow; /* to initialize random seed */ 962 struct utsname utsname; 963 964 /* default to writing debug to stderr */ 965 debug_file = stderr; 966 967 #ifdef SIGINFO 968 (void)bmake_signal(SIGINFO, siginfo); 969 #endif 970 /* 971 * Set the seed to produce a different random sequence 972 * on each program execution. 973 */ 974 gettimeofday(&rightnow, NULL); 975 srandom(rightnow.tv_sec + rightnow.tv_usec); 976 977 if ((progname = strrchr(argv[0], '/')) != NULL) 978 progname++; 979 else 980 progname = argv[0]; 981 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 982 /* 983 * get rid of resource limit on file descriptors 984 */ 985 { 986 struct rlimit rl; 987 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 988 rl.rlim_cur != rl.rlim_max) { 989 rl.rlim_cur = rl.rlim_max; 990 (void)setrlimit(RLIMIT_NOFILE, &rl); 991 } 992 } 993 #endif 994 995 if (uname(&utsname) == -1) { 996 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 997 strerror(errno)); 998 exit(2); 999 } 1000 1001 /* 1002 * Get the name of this type of MACHINE from utsname 1003 * so we can share an executable for similar machines. 1004 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1005 * 1006 * Note that both MACHINE and MACHINE_ARCH are decided at 1007 * run-time. 1008 */ 1009 if (!machine) { 1010 #ifdef MAKE_NATIVE 1011 machine = utsname.machine; 1012 #else 1013 #ifdef MAKE_MACHINE 1014 machine = MAKE_MACHINE; 1015 #else 1016 machine = "unknown"; 1017 #endif 1018 #endif 1019 } 1020 1021 if (!machine_arch) { 1022 #ifdef MAKE_NATIVE 1023 static char machine_arch_buf[sizeof(utsname.machine)]; 1024 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1025 size_t len = sizeof(machine_arch_buf); 1026 1027 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1028 &len, NULL, 0) < 0) { 1029 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1030 strerror(errno)); 1031 exit(2); 1032 } 1033 1034 machine_arch = machine_arch_buf; 1035 #else 1036 #ifndef MACHINE_ARCH 1037 #ifdef MAKE_MACHINE_ARCH 1038 machine_arch = MAKE_MACHINE_ARCH; 1039 #else 1040 machine_arch = "unknown"; 1041 #endif 1042 #else 1043 machine_arch = MACHINE_ARCH; 1044 #endif 1045 #endif 1046 } 1047 1048 myPid = getpid(); /* remember this for vFork() */ 1049 1050 /* 1051 * Just in case MAKEOBJDIR wants us to do something tricky. 1052 */ 1053 Var_Init(); /* Initialize the lists of variables for 1054 * parsing arguments */ 1055 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 1056 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 1057 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 1058 #ifdef MAKE_VERSION 1059 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 1060 #endif 1061 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 1062 /* 1063 * This is the traditional preference for makefiles. 1064 */ 1065 #ifndef MAKEFILE_PREFERENCE_LIST 1066 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1067 #endif 1068 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1069 VAR_GLOBAL, 0); 1070 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 1071 1072 create = Lst_Init(FALSE); 1073 makefiles = Lst_Init(FALSE); 1074 printVars = FALSE; 1075 debugVflag = FALSE; 1076 variables = Lst_Init(FALSE); 1077 beSilent = FALSE; /* Print commands as executed */ 1078 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1079 noExecute = FALSE; /* Execute all commands */ 1080 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1081 keepgoing = FALSE; /* Stop on error */ 1082 allPrecious = FALSE; /* Remove targets when interrupted */ 1083 deleteOnError = FALSE; /* Historical default behavior */ 1084 queryFlag = FALSE; /* This is not just a check-run */ 1085 noBuiltins = FALSE; /* Read the built-in rules */ 1086 touchFlag = FALSE; /* Actually update targets */ 1087 debug = 0; /* No debug verbosity, please. */ 1088 jobsRunning = FALSE; 1089 1090 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1091 maxJobTokens = maxJobs; 1092 compatMake = FALSE; /* No compat mode */ 1093 ignorePWD = FALSE; 1094 1095 /* 1096 * Initialize the parsing, directory and variable modules to prepare 1097 * for the reading of inclusion paths and variable settings on the 1098 * command line 1099 */ 1100 1101 /* 1102 * Initialize various variables. 1103 * MAKE also gets this name, for compatibility 1104 * .MAKEFLAGS gets set to the empty string just in case. 1105 * MFLAGS also gets initialized empty, for compatibility. 1106 */ 1107 Parse_Init(); 1108 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1109 /* 1110 * Leave alone if it is an absolute path, or if it does 1111 * not contain a '/' in which case we need to find it in 1112 * the path, like execvp(3) and the shells do. 1113 */ 1114 p1 = argv[0]; 1115 } else { 1116 /* 1117 * A relative path, canonicalize it. 1118 */ 1119 p1 = cached_realpath(argv[0], mdpath); 1120 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1121 p1 = argv[0]; /* realpath failed */ 1122 } 1123 } 1124 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 1125 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 1126 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 1127 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 1128 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 1129 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 1130 /* some makefiles need to know this */ 1131 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 1132 1133 /* 1134 * Set some other useful macros 1135 */ 1136 { 1137 char tmp[64], *ep; 1138 1139 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1140 if (makelevel < 0) 1141 makelevel = 0; 1142 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1143 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1144 snprintf(tmp, sizeof(tmp), "%u", myPid); 1145 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1146 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1147 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1148 } 1149 if (makelevel > 0) { 1150 char pn[1024]; 1151 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1152 progname = bmake_strdup(pn); 1153 } 1154 1155 #ifdef USE_META 1156 meta_init(); 1157 #endif 1158 Dir_Init(NULL); /* Dir_* safe to call from MainParseArgs */ 1159 1160 /* 1161 * First snag any flags out of the MAKE environment variable. 1162 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1163 * in a different format). 1164 */ 1165 #ifdef POSIX 1166 p1 = explode(getenv("MAKEFLAGS")); 1167 Main_ParseArgLine(p1); 1168 free(p1); 1169 #else 1170 Main_ParseArgLine(getenv("MAKE")); 1171 #endif 1172 1173 /* 1174 * Find where we are (now). 1175 * We take care of PWD for the automounter below... 1176 */ 1177 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1178 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1179 progname, strerror(errno)); 1180 exit(2); 1181 } 1182 1183 MainParseArgs(argc, argv); 1184 1185 if (enterFlag) 1186 printf("%s: Entering directory `%s'\n", progname, curdir); 1187 1188 /* 1189 * Verify that cwd is sane. 1190 */ 1191 if (stat(curdir, &sa) == -1) { 1192 (void)fprintf(stderr, "%s: %s: %s.\n", 1193 progname, curdir, strerror(errno)); 1194 exit(2); 1195 } 1196 1197 /* 1198 * All this code is so that we know where we are when we start up 1199 * on a different machine with pmake. 1200 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1201 * since the value of curdir can vary depending on how we got 1202 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1203 * or via subdir.mk in which case its likely a shell which does 1204 * not provide it. 1205 * So, to stop it breaking this case only, we ignore PWD if 1206 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1207 */ 1208 #ifndef NO_PWD_OVERRIDE 1209 if (!ignorePWD) { 1210 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1211 1212 if ((pwd = getenv("PWD")) != NULL && 1213 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1214 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1215 VAR_CMD, &ptmp2); 1216 1217 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1218 if (stat(pwd, &sb) == 0 && 1219 sa.st_ino == sb.st_ino && 1220 sa.st_dev == sb.st_dev) 1221 (void)strncpy(curdir, pwd, MAXPATHLEN); 1222 } 1223 } 1224 free(ptmp1); 1225 free(ptmp2); 1226 } 1227 #endif 1228 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1229 1230 /* 1231 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1232 * MAKEOBJDIR is set in the environment, try only that value 1233 * and fall back to .CURDIR if it does not exist. 1234 * 1235 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1236 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1237 * of these paths exist, just use .CURDIR. 1238 */ 1239 Dir_Init(curdir); 1240 (void)Main_SetObjdir("%s", curdir); 1241 1242 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1243 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1244 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1245 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1246 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1247 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1248 1249 /* 1250 * Initialize archive, target and suffix modules in preparation for 1251 * parsing the makefile(s) 1252 */ 1253 Arch_Init(); 1254 Targ_Init(); 1255 Suff_Init(); 1256 Trace_Init(tracefile); 1257 1258 DEFAULT = NULL; 1259 (void)time(&now); 1260 1261 Trace_Log(MAKESTART, NULL); 1262 1263 /* 1264 * Set up the .TARGETS variable to contain the list of targets to be 1265 * created. If none specified, make the variable empty -- the parser 1266 * will fill the thing in with the default or .MAIN target. 1267 */ 1268 if (!Lst_IsEmpty(create)) { 1269 LstNode ln; 1270 1271 for (ln = Lst_First(create); ln != NULL; 1272 ln = Lst_Succ(ln)) { 1273 char *name = (char *)Lst_Datum(ln); 1274 1275 Var_Append(".TARGETS", name, VAR_GLOBAL); 1276 } 1277 } else 1278 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1279 1280 1281 /* 1282 * If no user-supplied system path was given (through the -m option) 1283 * add the directories from the DEFSYSPATH (more than one may be given 1284 * as dir1:...:dirn) to the system include path. 1285 */ 1286 if (syspath == NULL || *syspath == '\0') 1287 syspath = defsyspath; 1288 else 1289 syspath = bmake_strdup(syspath); 1290 1291 for (start = syspath; *start != '\0'; start = cp) { 1292 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1293 continue; 1294 if (*cp == ':') { 1295 *cp++ = '\0'; 1296 } 1297 /* look for magic parent directory search string */ 1298 if (strncmp(".../", start, 4) != 0) { 1299 (void)Dir_AddDir(defIncPath, start); 1300 } else { 1301 if (Dir_FindHereOrAbove(curdir, start+4, 1302 found_path, sizeof(found_path))) { 1303 (void)Dir_AddDir(defIncPath, found_path); 1304 } 1305 } 1306 } 1307 if (syspath != defsyspath) 1308 free(syspath); 1309 1310 /* 1311 * Read in the built-in rules first, followed by the specified 1312 * makefile, if it was (makefile != NULL), or the default 1313 * makefile and Makefile, in that order, if it wasn't. 1314 */ 1315 if (!noBuiltins) { 1316 LstNode ln; 1317 1318 sysMkPath = Lst_Init(FALSE); 1319 Dir_Expand(_PATH_DEFSYSMK, 1320 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1321 sysMkPath); 1322 if (Lst_IsEmpty(sysMkPath)) 1323 Fatal("%s: no system rules (%s).", progname, 1324 _PATH_DEFSYSMK); 1325 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1326 if (ln == NULL) 1327 Fatal("%s: cannot open %s.", progname, 1328 (char *)Lst_Datum(ln)); 1329 } 1330 1331 if (!Lst_IsEmpty(makefiles)) { 1332 LstNode ln; 1333 1334 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1335 if (ln != NULL) 1336 Fatal("%s: cannot open %s.", progname, 1337 (char *)Lst_Datum(ln)); 1338 } else { 1339 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1340 VAR_CMD, VARF_WANTRES); 1341 if (p1) { 1342 (void)str2Lst_Append(makefiles, p1, NULL); 1343 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1344 free(p1); 1345 } 1346 } 1347 1348 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1349 if (!noBuiltins || !printVars) { 1350 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1351 VAR_CMD, VARF_WANTRES); 1352 doing_depend = TRUE; 1353 (void)ReadMakefile(makeDependfile, NULL); 1354 doing_depend = FALSE; 1355 } 1356 1357 if (enterFlagObj) 1358 printf("%s: Entering directory `%s'\n", progname, objdir); 1359 1360 MakeMode(NULL); 1361 1362 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1363 free(p1); 1364 1365 if (!forceJobs && !compatMake && 1366 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1367 char *value; 1368 int n; 1369 1370 value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES); 1371 n = strtol(value, NULL, 0); 1372 if (n < 1) { 1373 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1374 progname); 1375 exit(1); 1376 } 1377 if (n != maxJobs) { 1378 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1379 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1380 } 1381 maxJobs = n; 1382 maxJobTokens = maxJobs; 1383 forceJobs = TRUE; 1384 free(value); 1385 } 1386 1387 /* 1388 * Be compatible if user did not specify -j and did not explicitly 1389 * turned compatibility on 1390 */ 1391 if (!compatMake && !forceJobs) { 1392 compatMake = TRUE; 1393 } 1394 1395 if (!compatMake) 1396 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1397 if (DEBUG(JOB)) 1398 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1399 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1400 1401 if (!printVars) 1402 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1403 1404 1405 /* 1406 * For compatibility, look at the directories in the VPATH variable 1407 * and add them to the search path, if the variable is defined. The 1408 * variable's value is in the same format as the PATH envariable, i.e. 1409 * <directory>:<directory>:<directory>... 1410 */ 1411 if (Var_Exists("VPATH", VAR_CMD)) { 1412 char *vpath, savec; 1413 /* 1414 * GCC stores string constants in read-only memory, but 1415 * Var_Subst will want to write this thing, so store it 1416 * in an array 1417 */ 1418 static char VPATH[] = "${VPATH}"; 1419 1420 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1421 path = vpath; 1422 do { 1423 /* skip to end of directory */ 1424 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1425 continue; 1426 /* Save terminator character so know when to stop */ 1427 savec = *cp; 1428 *cp = '\0'; 1429 /* Add directory to search path */ 1430 (void)Dir_AddDir(dirSearchPath, path); 1431 *cp = savec; 1432 path = cp + 1; 1433 } while (savec == ':'); 1434 free(vpath); 1435 } 1436 1437 /* 1438 * Now that all search paths have been read for suffixes et al, it's 1439 * time to add the default search path to their lists... 1440 */ 1441 Suff_DoPaths(); 1442 1443 /* 1444 * Propagate attributes through :: dependency lists. 1445 */ 1446 Targ_Propagate(); 1447 1448 /* print the initial graph, if the user requested it */ 1449 if (DEBUG(GRAPH1)) 1450 Targ_PrintGraph(1); 1451 1452 /* print the values of any variables requested by the user */ 1453 if (printVars) { 1454 doPrintVars(); 1455 outOfDate = FALSE; 1456 } else { 1457 outOfDate = runTargets(); 1458 } 1459 1460 #ifdef CLEANUP 1461 Lst_Destroy(variables, NULL); 1462 Lst_Destroy(makefiles, NULL); 1463 Lst_Destroy(create, (FreeProc *)free); 1464 #endif 1465 1466 /* print the graph now it's been processed if the user requested it */ 1467 if (DEBUG(GRAPH2)) 1468 Targ_PrintGraph(2); 1469 1470 Trace_Log(MAKEEND, 0); 1471 1472 if (enterFlagObj) 1473 printf("%s: Leaving directory `%s'\n", progname, objdir); 1474 if (enterFlag) 1475 printf("%s: Leaving directory `%s'\n", progname, curdir); 1476 1477 #ifdef USE_META 1478 meta_finish(); 1479 #endif 1480 Suff_End(); 1481 Targ_End(); 1482 Arch_End(); 1483 Var_End(); 1484 Parse_End(); 1485 Dir_End(); 1486 Job_End(); 1487 Trace_End(); 1488 1489 return outOfDate ? 1 : 0; 1490 } 1491 1492 /*- 1493 * ReadMakefile -- 1494 * Open and parse the given makefile. 1495 * 1496 * Results: 1497 * 0 if ok. -1 if couldn't open file. 1498 * 1499 * Side Effects: 1500 * lots 1501 */ 1502 static int 1503 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1504 { 1505 const char *fname = p; /* makefile to read */ 1506 int fd; 1507 size_t len = MAXPATHLEN; 1508 char *name, *path = bmake_malloc(len); 1509 1510 if (!strcmp(fname, "-")) { 1511 Parse_File(NULL /*stdin*/, -1); 1512 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1513 } else { 1514 /* if we've chdir'd, rebuild the path name */ 1515 if (strcmp(curdir, objdir) && *fname != '/') { 1516 size_t plen = strlen(curdir) + strlen(fname) + 2; 1517 if (len < plen) 1518 path = bmake_realloc(path, len = 2 * plen); 1519 1520 (void)snprintf(path, len, "%s/%s", curdir, fname); 1521 fd = open(path, O_RDONLY); 1522 if (fd != -1) { 1523 fname = path; 1524 goto found; 1525 } 1526 1527 /* If curdir failed, try objdir (ala .depend) */ 1528 plen = strlen(objdir) + strlen(fname) + 2; 1529 if (len < plen) 1530 path = bmake_realloc(path, len = 2 * plen); 1531 (void)snprintf(path, len, "%s/%s", objdir, fname); 1532 fd = open(path, O_RDONLY); 1533 if (fd != -1) { 1534 fname = path; 1535 goto found; 1536 } 1537 } else { 1538 fd = open(fname, O_RDONLY); 1539 if (fd != -1) 1540 goto found; 1541 } 1542 /* look in -I and system include directories. */ 1543 name = Dir_FindFile(fname, parseIncPath); 1544 if (!name) 1545 name = Dir_FindFile(fname, 1546 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1547 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1548 free(name); 1549 free(path); 1550 return(-1); 1551 } 1552 fname = name; 1553 /* 1554 * set the MAKEFILE variable desired by System V fans -- the 1555 * placement of the setting here means it gets set to the last 1556 * makefile specified, as it is set by SysV make. 1557 */ 1558 found: 1559 if (!doing_depend) 1560 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1561 Parse_File(fname, fd); 1562 } 1563 free(path); 1564 return(0); 1565 } 1566 1567 1568 1569 /*- 1570 * Cmd_Exec -- 1571 * Execute the command in cmd, and return the output of that command 1572 * in a string. 1573 * 1574 * Results: 1575 * A string containing the output of the command, or the empty string 1576 * If errnum is not NULL, it contains the reason for the command failure 1577 * 1578 * Side Effects: 1579 * The string must be freed by the caller. 1580 */ 1581 char * 1582 Cmd_Exec(const char *cmd, const char **errnum) 1583 { 1584 const char *args[4]; /* Args for invoking the shell */ 1585 int fds[2]; /* Pipe streams */ 1586 int cpid; /* Child PID */ 1587 int pid; /* PID from wait() */ 1588 char *res; /* result */ 1589 int status; /* command exit status */ 1590 Buffer buf; /* buffer to store the result */ 1591 char *cp; 1592 int cc; /* bytes read, or -1 */ 1593 int savederr; /* saved errno */ 1594 1595 1596 *errnum = NULL; 1597 1598 if (!shellName) 1599 Shell_Init(); 1600 /* 1601 * Set up arguments for shell 1602 */ 1603 args[0] = shellName; 1604 args[1] = "-c"; 1605 args[2] = cmd; 1606 args[3] = NULL; 1607 1608 /* 1609 * Open a pipe for fetching its output 1610 */ 1611 if (pipe(fds) == -1) { 1612 *errnum = "Couldn't create pipe for \"%s\""; 1613 goto bad; 1614 } 1615 1616 /* 1617 * Fork 1618 */ 1619 switch (cpid = vFork()) { 1620 case 0: 1621 /* 1622 * Close input side of pipe 1623 */ 1624 (void)close(fds[0]); 1625 1626 /* 1627 * Duplicate the output stream to the shell's output, then 1628 * shut the extra thing down. Note we don't fetch the error 1629 * stream...why not? Why? 1630 */ 1631 (void)dup2(fds[1], 1); 1632 (void)close(fds[1]); 1633 1634 Var_ExportVars(); 1635 1636 (void)execv(shellPath, UNCONST(args)); 1637 _exit(1); 1638 /*NOTREACHED*/ 1639 1640 case -1: 1641 *errnum = "Couldn't exec \"%s\""; 1642 goto bad; 1643 1644 default: 1645 /* 1646 * No need for the writing half 1647 */ 1648 (void)close(fds[1]); 1649 1650 savederr = 0; 1651 Buf_Init(&buf, 0); 1652 1653 do { 1654 char result[BUFSIZ]; 1655 cc = read(fds[0], result, sizeof(result)); 1656 if (cc > 0) 1657 Buf_AddBytes(&buf, cc, result); 1658 } 1659 while (cc > 0 || (cc == -1 && errno == EINTR)); 1660 if (cc == -1) 1661 savederr = errno; 1662 1663 /* 1664 * Close the input side of the pipe. 1665 */ 1666 (void)close(fds[0]); 1667 1668 /* 1669 * Wait for the process to exit. 1670 */ 1671 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1672 JobReapChild(pid, status, FALSE); 1673 continue; 1674 } 1675 cc = Buf_Size(&buf); 1676 res = Buf_Destroy(&buf, FALSE); 1677 1678 if (savederr != 0) 1679 *errnum = "Couldn't read shell's output for \"%s\""; 1680 1681 if (WIFSIGNALED(status)) 1682 *errnum = "\"%s\" exited on a signal"; 1683 else if (WEXITSTATUS(status) != 0) 1684 *errnum = "\"%s\" returned non-zero status"; 1685 1686 /* 1687 * Null-terminate the result, convert newlines to spaces and 1688 * install it in the variable. 1689 */ 1690 res[cc] = '\0'; 1691 cp = &res[cc]; 1692 1693 if (cc > 0 && *--cp == '\n') { 1694 /* 1695 * A final newline is just stripped 1696 */ 1697 *cp-- = '\0'; 1698 } 1699 while (cp >= res) { 1700 if (*cp == '\n') { 1701 *cp = ' '; 1702 } 1703 cp--; 1704 } 1705 break; 1706 } 1707 return res; 1708 bad: 1709 res = bmake_malloc(1); 1710 *res = '\0'; 1711 return res; 1712 } 1713 1714 /*- 1715 * Error -- 1716 * Print an error message given its format. 1717 * 1718 * Results: 1719 * None. 1720 * 1721 * Side Effects: 1722 * The message is printed. 1723 */ 1724 /* VARARGS */ 1725 void 1726 Error(const char *fmt, ...) 1727 { 1728 va_list ap; 1729 FILE *err_file; 1730 1731 err_file = debug_file; 1732 if (err_file == stdout) 1733 err_file = stderr; 1734 (void)fflush(stdout); 1735 for (;;) { 1736 va_start(ap, fmt); 1737 fprintf(err_file, "%s: ", progname); 1738 (void)vfprintf(err_file, fmt, ap); 1739 va_end(ap); 1740 (void)fprintf(err_file, "\n"); 1741 (void)fflush(err_file); 1742 if (err_file == stderr) 1743 break; 1744 err_file = stderr; 1745 } 1746 } 1747 1748 /*- 1749 * Fatal -- 1750 * Produce a Fatal error message. If jobs are running, waits for them 1751 * to finish. 1752 * 1753 * Results: 1754 * None 1755 * 1756 * Side Effects: 1757 * The program exits 1758 */ 1759 /* VARARGS */ 1760 void 1761 Fatal(const char *fmt, ...) 1762 { 1763 va_list ap; 1764 1765 va_start(ap, fmt); 1766 if (jobsRunning) 1767 Job_Wait(); 1768 1769 (void)fflush(stdout); 1770 (void)vfprintf(stderr, fmt, ap); 1771 va_end(ap); 1772 (void)fprintf(stderr, "\n"); 1773 (void)fflush(stderr); 1774 1775 PrintOnError(NULL, NULL); 1776 1777 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1778 Targ_PrintGraph(2); 1779 Trace_Log(MAKEERROR, 0); 1780 exit(2); /* Not 1 so -q can distinguish error */ 1781 } 1782 1783 /* 1784 * Punt -- 1785 * Major exception once jobs are being created. Kills all jobs, prints 1786 * a message and exits. 1787 * 1788 * Results: 1789 * None 1790 * 1791 * Side Effects: 1792 * All children are killed indiscriminately and the program Lib_Exits 1793 */ 1794 /* VARARGS */ 1795 void 1796 Punt(const char *fmt, ...) 1797 { 1798 va_list ap; 1799 1800 va_start(ap, fmt); 1801 (void)fflush(stdout); 1802 (void)fprintf(stderr, "%s: ", progname); 1803 (void)vfprintf(stderr, fmt, ap); 1804 va_end(ap); 1805 (void)fprintf(stderr, "\n"); 1806 (void)fflush(stderr); 1807 1808 PrintOnError(NULL, NULL); 1809 1810 DieHorribly(); 1811 } 1812 1813 /*- 1814 * DieHorribly -- 1815 * Exit without giving a message. 1816 * 1817 * Results: 1818 * None 1819 * 1820 * Side Effects: 1821 * A big one... 1822 */ 1823 void 1824 DieHorribly(void) 1825 { 1826 if (jobsRunning) 1827 Job_AbortAll(); 1828 if (DEBUG(GRAPH2)) 1829 Targ_PrintGraph(2); 1830 Trace_Log(MAKEERROR, 0); 1831 exit(2); /* Not 1, so -q can distinguish error */ 1832 } 1833 1834 /* 1835 * Finish -- 1836 * Called when aborting due to errors in child shell to signal 1837 * abnormal exit. 1838 * 1839 * Results: 1840 * None 1841 * 1842 * Side Effects: 1843 * The program exits 1844 */ 1845 void 1846 Finish(int errors) 1847 /* number of errors encountered in Make_Make */ 1848 { 1849 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1850 } 1851 1852 /* 1853 * eunlink -- 1854 * Remove a file carefully, avoiding directories. 1855 */ 1856 int 1857 eunlink(const char *file) 1858 { 1859 struct stat st; 1860 1861 if (lstat(file, &st) == -1) 1862 return -1; 1863 1864 if (S_ISDIR(st.st_mode)) { 1865 errno = EISDIR; 1866 return -1; 1867 } 1868 return unlink(file); 1869 } 1870 1871 /* 1872 * execError -- 1873 * Print why exec failed, avoiding stdio. 1874 */ 1875 void 1876 execError(const char *af, const char *av) 1877 { 1878 #ifdef USE_IOVEC 1879 int i = 0; 1880 struct iovec iov[8]; 1881 #define IOADD(s) \ 1882 (void)(iov[i].iov_base = UNCONST(s), \ 1883 iov[i].iov_len = strlen(iov[i].iov_base), \ 1884 i++) 1885 #else 1886 #define IOADD(void)write(2, s, strlen(s)) 1887 #endif 1888 1889 IOADD(progname); 1890 IOADD(": "); 1891 IOADD(af); 1892 IOADD("("); 1893 IOADD(av); 1894 IOADD(") failed ("); 1895 IOADD(strerror(errno)); 1896 IOADD(")\n"); 1897 1898 #ifdef USE_IOVEC 1899 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1900 continue; 1901 #endif 1902 } 1903 1904 /* 1905 * usage -- 1906 * exit with usage message 1907 */ 1908 static void 1909 usage(void) 1910 { 1911 char *p; 1912 if ((p = strchr(progname, '[')) != NULL) 1913 *p = '\0'; 1914 1915 (void)fprintf(stderr, 1916 "usage: %s [-BeikNnqrstWwX] \n\ 1917 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1918 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1919 [-V variable] [variable=value] [target ...]\n", progname); 1920 exit(2); 1921 } 1922 1923 /* 1924 * realpath(3) can get expensive, cache results... 1925 */ 1926 static GNode *cached_realpaths = NULL; 1927 1928 static GNode * 1929 get_cached_realpaths(void) 1930 { 1931 1932 if (!cached_realpaths) { 1933 cached_realpaths = Targ_NewGN("Realpath"); 1934 #ifndef DEBUG_REALPATH_CACHE 1935 cached_realpaths->flags = INTERNAL; 1936 #endif 1937 } 1938 1939 return cached_realpaths; 1940 } 1941 1942 /* purge any relative paths */ 1943 static void 1944 purge_cached_realpaths(void) 1945 { 1946 GNode *cache = get_cached_realpaths(); 1947 Hash_Entry *he, *nhe; 1948 Hash_Search hs; 1949 1950 he = Hash_EnumFirst(&cache->context, &hs); 1951 while (he) { 1952 nhe = Hash_EnumNext(&hs); 1953 if (he->name[0] != '/') { 1954 if (DEBUG(DIR)) 1955 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1956 Hash_DeleteEntry(&cache->context, he); 1957 } 1958 he = nhe; 1959 } 1960 } 1961 1962 char * 1963 cached_realpath(const char *pathname, char *resolved) 1964 { 1965 GNode *cache; 1966 char *rp, *cp; 1967 1968 if (!pathname || !pathname[0]) 1969 return NULL; 1970 1971 cache = get_cached_realpaths(); 1972 1973 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1974 /* a hit */ 1975 strncpy(resolved, rp, MAXPATHLEN); 1976 resolved[MAXPATHLEN - 1] = '\0'; 1977 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1978 Var_Set(pathname, rp, cache, 0); 1979 } /* else should we negative-cache? */ 1980 1981 free(cp); 1982 return rp ? resolved : NULL; 1983 } 1984 1985 int 1986 PrintAddr(void *a, void *b) 1987 { 1988 printf("%lx ", (unsigned long) a); 1989 return b ? 0 : 0; 1990 } 1991 1992 1993 static int 1994 addErrorCMD(void *cmdp, void *gnp) 1995 { 1996 if (cmdp == NULL) 1997 return 1; /* stop */ 1998 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 1999 return 0; 2000 } 2001 2002 void 2003 PrintOnError(GNode *gn, const char *s) 2004 { 2005 static GNode *en = NULL; 2006 char tmp[64]; 2007 char *cp; 2008 2009 if (s) 2010 printf("%s", s); 2011 2012 printf("\n%s: stopped in %s\n", progname, curdir); 2013 2014 if (en) 2015 return; /* we've been here! */ 2016 if (gn) { 2017 /* 2018 * We can print this even if there is no .ERROR target. 2019 */ 2020 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 2021 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2022 Lst_ForEach(gn->commands, addErrorCMD, gn); 2023 } 2024 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2025 sizeof(tmp) - 1); 2026 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2027 if (cp) { 2028 if (*cp) 2029 printf("%s", cp); 2030 free(cp); 2031 } 2032 fflush(stdout); 2033 2034 /* 2035 * Finally, see if there is a .ERROR target, and run it if so. 2036 */ 2037 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2038 if (en) { 2039 en->type |= OP_SPECIAL; 2040 Compat_Make(en, en); 2041 } 2042 } 2043 2044 void 2045 Main_ExportMAKEFLAGS(Boolean first) 2046 { 2047 static int once = 1; 2048 char tmp[64]; 2049 char *s; 2050 2051 if (once != first) 2052 return; 2053 once = 0; 2054 2055 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 2056 sizeof(tmp)); 2057 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES); 2058 if (s && *s) { 2059 #ifdef POSIX 2060 setenv("MAKEFLAGS", s, 1); 2061 #else 2062 setenv("MAKE", s, 1); 2063 #endif 2064 } 2065 } 2066 2067 char * 2068 getTmpdir(void) 2069 { 2070 static char *tmpdir = NULL; 2071 2072 if (!tmpdir) { 2073 struct stat st; 2074 2075 /* 2076 * Honor $TMPDIR but only if it is valid. 2077 * Ensure it ends with /. 2078 */ 2079 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2080 VARF_WANTRES); 2081 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2082 free(tmpdir); 2083 tmpdir = bmake_strdup(_PATH_TMP); 2084 } 2085 } 2086 return tmpdir; 2087 } 2088 2089 /* 2090 * Create and open a temp file using "pattern". 2091 * If "fnamep" is provided set it to a copy of the filename created. 2092 * Otherwise unlink the file once open. 2093 */ 2094 int 2095 mkTempFile(const char *pattern, char **fnamep) 2096 { 2097 static char *tmpdir = NULL; 2098 char tfile[MAXPATHLEN]; 2099 int fd; 2100 2101 if (!pattern) 2102 pattern = TMPPAT; 2103 if (!tmpdir) 2104 tmpdir = getTmpdir(); 2105 if (pattern[0] == '/') { 2106 snprintf(tfile, sizeof(tfile), "%s", pattern); 2107 } else { 2108 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2109 } 2110 if ((fd = mkstemp(tfile)) < 0) 2111 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2112 if (fnamep) { 2113 *fnamep = bmake_strdup(tfile); 2114 } else { 2115 unlink(tfile); /* we just want the descriptor */ 2116 } 2117 return fd; 2118 } 2119 2120 /* 2121 * Convert a string representation of a boolean. 2122 * Anything that looks like "No", "False", "Off", "0" etc, 2123 * is FALSE, otherwise TRUE. 2124 */ 2125 Boolean 2126 s2Boolean(const char *s, Boolean bf) 2127 { 2128 if (s) { 2129 switch(*s) { 2130 case '\0': /* not set - the default wins */ 2131 break; 2132 case '0': 2133 case 'F': 2134 case 'f': 2135 case 'N': 2136 case 'n': 2137 bf = FALSE; 2138 break; 2139 case 'O': 2140 case 'o': 2141 switch (s[1]) { 2142 case 'F': 2143 case 'f': 2144 bf = FALSE; 2145 break; 2146 default: 2147 bf = TRUE; 2148 break; 2149 } 2150 break; 2151 default: 2152 bf = TRUE; 2153 break; 2154 } 2155 } 2156 return (bf); 2157 } 2158 2159 /* 2160 * Return a Boolean based on setting of a knob. 2161 * 2162 * If the knob is not set, the supplied default is the return value. 2163 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2164 * is FALSE, otherwise TRUE. 2165 */ 2166 Boolean 2167 getBoolean(const char *name, Boolean bf) 2168 { 2169 char tmp[64]; 2170 char *cp; 2171 2172 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2173 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2174 2175 if (cp) { 2176 bf = s2Boolean(cp, bf); 2177 free(cp); 2178 } 2179 } 2180 return (bf); 2181 } 2182
Indexes created Wed Sep 24 15:09:51 GMT 2025