main.c revision 1.270
1 /* $NetBSD: main.c,v 1.270 2017/06/19 14:59:06 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 1.270 2017/06/19 14:59:06 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 1.270 2017/06/19 14:59:06 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, "${" MAKE_MODE ":tl}", 833 VAR_GLOBAL, VARF_WANTRES); 834 835 if (mode && *mode) { 836 if (strstr(mode, "compat")) { 837 compatMake = TRUE; 838 forceJobs = FALSE; 839 } 840 #if USE_META 841 if (strstr(mode, "meta")) 842 meta_mode_init(mode); 843 #endif 844 } 845 846 free(mp); 847 } 848 849 static void 850 doPrintVars(void) 851 { 852 LstNode ln; 853 Boolean expandVars; 854 855 if (debugVflag) 856 expandVars = FALSE; 857 else 858 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", TRUE); 859 860 for (ln = Lst_First(variables); ln != NULL; 861 ln = Lst_Succ(ln)) { 862 char *var = (char *)Lst_Datum(ln); 863 char *value; 864 char *p1; 865 Boolean noExpand; 866 867 if ((noExpand = (*var == '\\'))) 868 var++; 869 870 if (strchr(var, '$')) { 871 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 872 VARF_WANTRES); 873 } else if (expandVars) { 874 char tmp[128]; 875 int len = snprintf(tmp, sizeof(tmp), "${%s}", var); 876 877 if (len >= (int)sizeof(tmp)) 878 Fatal("%s: variable name too big: %s", 879 progname, var); 880 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 881 VARF_WANTRES); 882 } else { 883 value = p1 = Var_Value(var, VAR_GLOBAL, &p1); 884 } 885 printf("%s\n", value ? value : ""); 886 free(p1); 887 } 888 } 889 890 static Boolean 891 runTargets(void) 892 { 893 Lst targs; /* target nodes to create -- passed to Make_Init */ 894 Boolean outOfDate; /* FALSE if all targets up to date */ 895 896 /* 897 * Have now read the entire graph and need to make a list of 898 * targets to create. If none was given on the command line, 899 * we consult the parsing module to find the main target(s) 900 * to create. 901 */ 902 if (Lst_IsEmpty(create)) 903 targs = Parse_MainName(); 904 else 905 targs = Targ_FindList(create, TARG_CREATE); 906 907 if (!compatMake) { 908 /* 909 * Initialize job module before traversing the graph 910 * now that any .BEGIN and .END targets have been read. 911 * This is done only if the -q flag wasn't given 912 * (to prevent the .BEGIN from being executed should 913 * it exist). 914 */ 915 if (!queryFlag) { 916 Job_Init(); 917 jobsRunning = TRUE; 918 } 919 920 /* Traverse the graph, checking on all the targets */ 921 outOfDate = Make_Run(targs); 922 } else { 923 /* 924 * Compat_Init will take care of creating all the 925 * targets as well as initializing the module. 926 */ 927 Compat_Run(targs); 928 outOfDate = FALSE; 929 } 930 Lst_Destroy(targs, NULL); 931 return outOfDate; 932 } 933 934 /*- 935 * main -- 936 * The main function, for obvious reasons. Initializes variables 937 * and a few modules, then parses the arguments give it in the 938 * environment and on the command line. Reads the system makefile 939 * followed by either Makefile, makefile or the file given by the 940 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 941 * flags it has received by then uses either the Make or the Compat 942 * module to create the initial list of targets. 943 * 944 * Results: 945 * If -q was given, exits -1 if anything was out-of-date. Else it exits 946 * 0. 947 * 948 * Side Effects: 949 * The program exits when done. Targets are created. etc. etc. etc. 950 */ 951 int 952 main(int argc, char **argv) 953 { 954 Boolean outOfDate; /* FALSE if all targets up to date */ 955 struct stat sb, sa; 956 char *p1, *path; 957 char mdpath[MAXPATHLEN]; 958 const char *machine = getenv("MACHINE"); 959 const char *machine_arch = getenv("MACHINE_ARCH"); 960 char *syspath = getenv("MAKESYSPATH"); 961 Lst sysMkPath; /* Path of sys.mk */ 962 char *cp = NULL, *start; 963 /* avoid faults on read-only strings */ 964 static char defsyspath[] = _PATH_DEFSYSPATH; 965 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 966 struct timeval rightnow; /* to initialize random seed */ 967 struct utsname utsname; 968 969 /* default to writing debug to stderr */ 970 debug_file = stderr; 971 972 #ifdef SIGINFO 973 (void)bmake_signal(SIGINFO, siginfo); 974 #endif 975 /* 976 * Set the seed to produce a different random sequence 977 * on each program execution. 978 */ 979 gettimeofday(&rightnow, NULL); 980 srandom(rightnow.tv_sec + rightnow.tv_usec); 981 982 if ((progname = strrchr(argv[0], '/')) != NULL) 983 progname++; 984 else 985 progname = argv[0]; 986 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 987 /* 988 * get rid of resource limit on file descriptors 989 */ 990 { 991 struct rlimit rl; 992 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 993 rl.rlim_cur != rl.rlim_max) { 994 rl.rlim_cur = rl.rlim_max; 995 (void)setrlimit(RLIMIT_NOFILE, &rl); 996 } 997 } 998 #endif 999 1000 if (uname(&utsname) == -1) { 1001 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1002 strerror(errno)); 1003 exit(2); 1004 } 1005 1006 /* 1007 * Get the name of this type of MACHINE from utsname 1008 * so we can share an executable for similar machines. 1009 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1010 * 1011 * Note that both MACHINE and MACHINE_ARCH are decided at 1012 * run-time. 1013 */ 1014 if (!machine) { 1015 #ifdef MAKE_NATIVE 1016 machine = utsname.machine; 1017 #else 1018 #ifdef MAKE_MACHINE 1019 machine = MAKE_MACHINE; 1020 #else 1021 machine = "unknown"; 1022 #endif 1023 #endif 1024 } 1025 1026 if (!machine_arch) { 1027 #ifdef MAKE_NATIVE 1028 static char machine_arch_buf[sizeof(utsname.machine)]; 1029 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1030 size_t len = sizeof(machine_arch_buf); 1031 1032 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1033 &len, NULL, 0) < 0) { 1034 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1035 strerror(errno)); 1036 exit(2); 1037 } 1038 1039 machine_arch = machine_arch_buf; 1040 #else 1041 #ifndef MACHINE_ARCH 1042 #ifdef MAKE_MACHINE_ARCH 1043 machine_arch = MAKE_MACHINE_ARCH; 1044 #else 1045 machine_arch = "unknown"; 1046 #endif 1047 #else 1048 machine_arch = MACHINE_ARCH; 1049 #endif 1050 #endif 1051 } 1052 1053 myPid = getpid(); /* remember this for vFork() */ 1054 1055 /* 1056 * Just in case MAKEOBJDIR wants us to do something tricky. 1057 */ 1058 Var_Init(); /* Initialize the lists of variables for 1059 * parsing arguments */ 1060 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 1061 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 1062 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 1063 #ifdef MAKE_VERSION 1064 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 1065 #endif 1066 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 1067 /* 1068 * This is the traditional preference for makefiles. 1069 */ 1070 #ifndef MAKEFILE_PREFERENCE_LIST 1071 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1072 #endif 1073 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1074 VAR_GLOBAL, 0); 1075 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 1076 1077 create = Lst_Init(FALSE); 1078 makefiles = Lst_Init(FALSE); 1079 printVars = FALSE; 1080 debugVflag = FALSE; 1081 variables = Lst_Init(FALSE); 1082 beSilent = FALSE; /* Print commands as executed */ 1083 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1084 noExecute = FALSE; /* Execute all commands */ 1085 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1086 keepgoing = FALSE; /* Stop on error */ 1087 allPrecious = FALSE; /* Remove targets when interrupted */ 1088 deleteOnError = FALSE; /* Historical default behavior */ 1089 queryFlag = FALSE; /* This is not just a check-run */ 1090 noBuiltins = FALSE; /* Read the built-in rules */ 1091 touchFlag = FALSE; /* Actually update targets */ 1092 debug = 0; /* No debug verbosity, please. */ 1093 jobsRunning = FALSE; 1094 1095 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1096 maxJobTokens = maxJobs; 1097 compatMake = FALSE; /* No compat mode */ 1098 ignorePWD = FALSE; 1099 1100 /* 1101 * Initialize the parsing, directory and variable modules to prepare 1102 * for the reading of inclusion paths and variable settings on the 1103 * command line 1104 */ 1105 1106 /* 1107 * Initialize various variables. 1108 * MAKE also gets this name, for compatibility 1109 * .MAKEFLAGS gets set to the empty string just in case. 1110 * MFLAGS also gets initialized empty, for compatibility. 1111 */ 1112 Parse_Init(); 1113 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1114 /* 1115 * Leave alone if it is an absolute path, or if it does 1116 * not contain a '/' in which case we need to find it in 1117 * the path, like execvp(3) and the shells do. 1118 */ 1119 p1 = argv[0]; 1120 } else { 1121 /* 1122 * A relative path, canonicalize it. 1123 */ 1124 p1 = cached_realpath(argv[0], mdpath); 1125 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1126 p1 = argv[0]; /* realpath failed */ 1127 } 1128 } 1129 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 1130 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 1131 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 1132 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 1133 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 1134 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 1135 /* some makefiles need to know this */ 1136 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 1137 1138 /* 1139 * Set some other useful macros 1140 */ 1141 { 1142 char tmp[64], *ep; 1143 1144 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1145 if (makelevel < 0) 1146 makelevel = 0; 1147 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1148 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1149 snprintf(tmp, sizeof(tmp), "%u", myPid); 1150 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1151 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1152 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1153 } 1154 if (makelevel > 0) { 1155 char pn[1024]; 1156 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1157 progname = bmake_strdup(pn); 1158 } 1159 1160 #ifdef USE_META 1161 meta_init(); 1162 #endif 1163 Dir_Init(NULL); /* Dir_* safe to call from MainParseArgs */ 1164 1165 /* 1166 * First snag any flags out of the MAKE environment variable. 1167 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1168 * in a different format). 1169 */ 1170 #ifdef POSIX 1171 p1 = explode(getenv("MAKEFLAGS")); 1172 Main_ParseArgLine(p1); 1173 free(p1); 1174 #else 1175 Main_ParseArgLine(getenv("MAKE")); 1176 #endif 1177 1178 /* 1179 * Find where we are (now). 1180 * We take care of PWD for the automounter below... 1181 */ 1182 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1183 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1184 progname, strerror(errno)); 1185 exit(2); 1186 } 1187 1188 MainParseArgs(argc, argv); 1189 1190 if (enterFlag) 1191 printf("%s: Entering directory `%s'\n", progname, curdir); 1192 1193 /* 1194 * Verify that cwd is sane. 1195 */ 1196 if (stat(curdir, &sa) == -1) { 1197 (void)fprintf(stderr, "%s: %s: %s.\n", 1198 progname, curdir, strerror(errno)); 1199 exit(2); 1200 } 1201 1202 /* 1203 * All this code is so that we know where we are when we start up 1204 * on a different machine with pmake. 1205 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1206 * since the value of curdir can vary depending on how we got 1207 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1208 * or via subdir.mk in which case its likely a shell which does 1209 * not provide it. 1210 * So, to stop it breaking this case only, we ignore PWD if 1211 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1212 */ 1213 #ifndef NO_PWD_OVERRIDE 1214 if (!ignorePWD) { 1215 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1216 1217 if ((pwd = getenv("PWD")) != NULL && 1218 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1219 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1220 VAR_CMD, &ptmp2); 1221 1222 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1223 if (stat(pwd, &sb) == 0 && 1224 sa.st_ino == sb.st_ino && 1225 sa.st_dev == sb.st_dev) 1226 (void)strncpy(curdir, pwd, MAXPATHLEN); 1227 } 1228 } 1229 free(ptmp1); 1230 free(ptmp2); 1231 } 1232 #endif 1233 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1234 1235 /* 1236 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1237 * MAKEOBJDIR is set in the environment, try only that value 1238 * and fall back to .CURDIR if it does not exist. 1239 * 1240 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1241 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1242 * of these paths exist, just use .CURDIR. 1243 */ 1244 Dir_Init(curdir); 1245 (void)Main_SetObjdir("%s", curdir); 1246 1247 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1248 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1249 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1250 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1251 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1252 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1253 1254 /* 1255 * Initialize archive, target and suffix modules in preparation for 1256 * parsing the makefile(s) 1257 */ 1258 Arch_Init(); 1259 Targ_Init(); 1260 Suff_Init(); 1261 Trace_Init(tracefile); 1262 1263 DEFAULT = NULL; 1264 (void)time(&now); 1265 1266 Trace_Log(MAKESTART, NULL); 1267 1268 /* 1269 * Set up the .TARGETS variable to contain the list of targets to be 1270 * created. If none specified, make the variable empty -- the parser 1271 * will fill the thing in with the default or .MAIN target. 1272 */ 1273 if (!Lst_IsEmpty(create)) { 1274 LstNode ln; 1275 1276 for (ln = Lst_First(create); ln != NULL; 1277 ln = Lst_Succ(ln)) { 1278 char *name = (char *)Lst_Datum(ln); 1279 1280 Var_Append(".TARGETS", name, VAR_GLOBAL); 1281 } 1282 } else 1283 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1284 1285 1286 /* 1287 * If no user-supplied system path was given (through the -m option) 1288 * add the directories from the DEFSYSPATH (more than one may be given 1289 * as dir1:...:dirn) to the system include path. 1290 */ 1291 if (syspath == NULL || *syspath == '\0') 1292 syspath = defsyspath; 1293 else 1294 syspath = bmake_strdup(syspath); 1295 1296 for (start = syspath; *start != '\0'; start = cp) { 1297 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1298 continue; 1299 if (*cp == ':') { 1300 *cp++ = '\0'; 1301 } 1302 /* look for magic parent directory search string */ 1303 if (strncmp(".../", start, 4) != 0) { 1304 (void)Dir_AddDir(defIncPath, start); 1305 } else { 1306 if (Dir_FindHereOrAbove(curdir, start+4, 1307 found_path, sizeof(found_path))) { 1308 (void)Dir_AddDir(defIncPath, found_path); 1309 } 1310 } 1311 } 1312 if (syspath != defsyspath) 1313 free(syspath); 1314 1315 /* 1316 * Read in the built-in rules first, followed by the specified 1317 * makefile, if it was (makefile != NULL), or the default 1318 * makefile and Makefile, in that order, if it wasn't. 1319 */ 1320 if (!noBuiltins) { 1321 LstNode ln; 1322 1323 sysMkPath = Lst_Init(FALSE); 1324 Dir_Expand(_PATH_DEFSYSMK, 1325 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1326 sysMkPath); 1327 if (Lst_IsEmpty(sysMkPath)) 1328 Fatal("%s: no system rules (%s).", progname, 1329 _PATH_DEFSYSMK); 1330 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1331 if (ln == NULL) 1332 Fatal("%s: cannot open %s.", progname, 1333 (char *)Lst_Datum(ln)); 1334 } 1335 1336 if (!Lst_IsEmpty(makefiles)) { 1337 LstNode ln; 1338 1339 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1340 if (ln != NULL) 1341 Fatal("%s: cannot open %s.", progname, 1342 (char *)Lst_Datum(ln)); 1343 } else { 1344 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1345 VAR_CMD, VARF_WANTRES); 1346 if (p1) { 1347 (void)str2Lst_Append(makefiles, p1, NULL); 1348 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1349 free(p1); 1350 } 1351 } 1352 1353 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1354 if (!noBuiltins || !printVars) { 1355 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1356 VAR_CMD, VARF_WANTRES); 1357 doing_depend = TRUE; 1358 (void)ReadMakefile(makeDependfile, NULL); 1359 doing_depend = FALSE; 1360 } 1361 1362 if (enterFlagObj) 1363 printf("%s: Entering directory `%s'\n", progname, objdir); 1364 1365 MakeMode(NULL); 1366 1367 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1368 free(p1); 1369 1370 if (!forceJobs && !compatMake && 1371 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1372 char *value; 1373 int n; 1374 1375 value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES); 1376 n = strtol(value, NULL, 0); 1377 if (n < 1) { 1378 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1379 progname); 1380 exit(1); 1381 } 1382 if (n != maxJobs) { 1383 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1384 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1385 } 1386 maxJobs = n; 1387 maxJobTokens = maxJobs; 1388 forceJobs = TRUE; 1389 free(value); 1390 } 1391 1392 /* 1393 * Be compatible if user did not specify -j and did not explicitly 1394 * turned compatibility on 1395 */ 1396 if (!compatMake && !forceJobs) { 1397 compatMake = TRUE; 1398 } 1399 1400 if (!compatMake) 1401 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1402 if (DEBUG(JOB)) 1403 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1404 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1405 1406 if (!printVars) 1407 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1408 1409 1410 /* 1411 * For compatibility, look at the directories in the VPATH variable 1412 * and add them to the search path, if the variable is defined. The 1413 * variable's value is in the same format as the PATH envariable, i.e. 1414 * <directory>:<directory>:<directory>... 1415 */ 1416 if (Var_Exists("VPATH", VAR_CMD)) { 1417 char *vpath, savec; 1418 /* 1419 * GCC stores string constants in read-only memory, but 1420 * Var_Subst will want to write this thing, so store it 1421 * in an array 1422 */ 1423 static char VPATH[] = "${VPATH}"; 1424 1425 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1426 path = vpath; 1427 do { 1428 /* skip to end of directory */ 1429 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1430 continue; 1431 /* Save terminator character so know when to stop */ 1432 savec = *cp; 1433 *cp = '\0'; 1434 /* Add directory to search path */ 1435 (void)Dir_AddDir(dirSearchPath, path); 1436 *cp = savec; 1437 path = cp + 1; 1438 } while (savec == ':'); 1439 free(vpath); 1440 } 1441 1442 /* 1443 * Now that all search paths have been read for suffixes et al, it's 1444 * time to add the default search path to their lists... 1445 */ 1446 Suff_DoPaths(); 1447 1448 /* 1449 * Propagate attributes through :: dependency lists. 1450 */ 1451 Targ_Propagate(); 1452 1453 /* print the initial graph, if the user requested it */ 1454 if (DEBUG(GRAPH1)) 1455 Targ_PrintGraph(1); 1456 1457 /* print the values of any variables requested by the user */ 1458 if (printVars) { 1459 doPrintVars(); 1460 outOfDate = FALSE; 1461 } else { 1462 outOfDate = runTargets(); 1463 } 1464 1465 #ifdef CLEANUP 1466 Lst_Destroy(variables, NULL); 1467 Lst_Destroy(makefiles, NULL); 1468 Lst_Destroy(create, (FreeProc *)free); 1469 #endif 1470 1471 /* print the graph now it's been processed if the user requested it */ 1472 if (DEBUG(GRAPH2)) 1473 Targ_PrintGraph(2); 1474 1475 Trace_Log(MAKEEND, 0); 1476 1477 if (enterFlagObj) 1478 printf("%s: Leaving directory `%s'\n", progname, objdir); 1479 if (enterFlag) 1480 printf("%s: Leaving directory `%s'\n", progname, curdir); 1481 1482 #ifdef USE_META 1483 meta_finish(); 1484 #endif 1485 Suff_End(); 1486 Targ_End(); 1487 Arch_End(); 1488 Var_End(); 1489 Parse_End(); 1490 Dir_End(); 1491 Job_End(); 1492 Trace_End(); 1493 1494 return outOfDate ? 1 : 0; 1495 } 1496 1497 /*- 1498 * ReadMakefile -- 1499 * Open and parse the given makefile. 1500 * 1501 * Results: 1502 * 0 if ok. -1 if couldn't open file. 1503 * 1504 * Side Effects: 1505 * lots 1506 */ 1507 static int 1508 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1509 { 1510 const char *fname = p; /* makefile to read */ 1511 int fd; 1512 size_t len = MAXPATHLEN; 1513 char *name, *path = bmake_malloc(len); 1514 1515 if (!strcmp(fname, "-")) { 1516 Parse_File(NULL /*stdin*/, -1); 1517 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1518 } else { 1519 /* if we've chdir'd, rebuild the path name */ 1520 if (strcmp(curdir, objdir) && *fname != '/') { 1521 size_t plen = strlen(curdir) + strlen(fname) + 2; 1522 if (len < plen) 1523 path = bmake_realloc(path, len = 2 * plen); 1524 1525 (void)snprintf(path, len, "%s/%s", curdir, fname); 1526 fd = open(path, O_RDONLY); 1527 if (fd != -1) { 1528 fname = path; 1529 goto found; 1530 } 1531 1532 /* If curdir failed, try objdir (ala .depend) */ 1533 plen = strlen(objdir) + strlen(fname) + 2; 1534 if (len < plen) 1535 path = bmake_realloc(path, len = 2 * plen); 1536 (void)snprintf(path, len, "%s/%s", objdir, fname); 1537 fd = open(path, O_RDONLY); 1538 if (fd != -1) { 1539 fname = path; 1540 goto found; 1541 } 1542 } else { 1543 fd = open(fname, O_RDONLY); 1544 if (fd != -1) 1545 goto found; 1546 } 1547 /* look in -I and system include directories. */ 1548 name = Dir_FindFile(fname, parseIncPath); 1549 if (!name) 1550 name = Dir_FindFile(fname, 1551 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1552 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1553 free(name); 1554 free(path); 1555 return(-1); 1556 } 1557 fname = name; 1558 /* 1559 * set the MAKEFILE variable desired by System V fans -- the 1560 * placement of the setting here means it gets set to the last 1561 * makefile specified, as it is set by SysV make. 1562 */ 1563 found: 1564 if (!doing_depend) 1565 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1566 Parse_File(fname, fd); 1567 } 1568 free(path); 1569 return(0); 1570 } 1571 1572 1573 1574 /*- 1575 * Cmd_Exec -- 1576 * Execute the command in cmd, and return the output of that command 1577 * in a string. 1578 * 1579 * Results: 1580 * A string containing the output of the command, or the empty string 1581 * If errnum is not NULL, it contains the reason for the command failure 1582 * 1583 * Side Effects: 1584 * The string must be freed by the caller. 1585 */ 1586 char * 1587 Cmd_Exec(const char *cmd, const char **errnum) 1588 { 1589 const char *args[4]; /* Args for invoking the shell */ 1590 int fds[2]; /* Pipe streams */ 1591 int cpid; /* Child PID */ 1592 int pid; /* PID from wait() */ 1593 char *res; /* result */ 1594 int status; /* command exit status */ 1595 Buffer buf; /* buffer to store the result */ 1596 char *cp; 1597 int cc; /* bytes read, or -1 */ 1598 int savederr; /* saved errno */ 1599 1600 1601 *errnum = NULL; 1602 1603 if (!shellName) 1604 Shell_Init(); 1605 /* 1606 * Set up arguments for shell 1607 */ 1608 args[0] = shellName; 1609 args[1] = "-c"; 1610 args[2] = cmd; 1611 args[3] = NULL; 1612 1613 /* 1614 * Open a pipe for fetching its output 1615 */ 1616 if (pipe(fds) == -1) { 1617 *errnum = "Couldn't create pipe for \"%s\""; 1618 goto bad; 1619 } 1620 1621 /* 1622 * Fork 1623 */ 1624 switch (cpid = vFork()) { 1625 case 0: 1626 /* 1627 * Close input side of pipe 1628 */ 1629 (void)close(fds[0]); 1630 1631 /* 1632 * Duplicate the output stream to the shell's output, then 1633 * shut the extra thing down. Note we don't fetch the error 1634 * stream...why not? Why? 1635 */ 1636 (void)dup2(fds[1], 1); 1637 (void)close(fds[1]); 1638 1639 Var_ExportVars(); 1640 1641 (void)execv(shellPath, UNCONST(args)); 1642 _exit(1); 1643 /*NOTREACHED*/ 1644 1645 case -1: 1646 *errnum = "Couldn't exec \"%s\""; 1647 goto bad; 1648 1649 default: 1650 /* 1651 * No need for the writing half 1652 */ 1653 (void)close(fds[1]); 1654 1655 savederr = 0; 1656 Buf_Init(&buf, 0); 1657 1658 do { 1659 char result[BUFSIZ]; 1660 cc = read(fds[0], result, sizeof(result)); 1661 if (cc > 0) 1662 Buf_AddBytes(&buf, cc, result); 1663 } 1664 while (cc > 0 || (cc == -1 && errno == EINTR)); 1665 if (cc == -1) 1666 savederr = errno; 1667 1668 /* 1669 * Close the input side of the pipe. 1670 */ 1671 (void)close(fds[0]); 1672 1673 /* 1674 * Wait for the process to exit. 1675 */ 1676 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1677 JobReapChild(pid, status, FALSE); 1678 continue; 1679 } 1680 cc = Buf_Size(&buf); 1681 res = Buf_Destroy(&buf, FALSE); 1682 1683 if (savederr != 0) 1684 *errnum = "Couldn't read shell's output for \"%s\""; 1685 1686 if (WIFSIGNALED(status)) 1687 *errnum = "\"%s\" exited on a signal"; 1688 else if (WEXITSTATUS(status) != 0) 1689 *errnum = "\"%s\" returned non-zero status"; 1690 1691 /* 1692 * Null-terminate the result, convert newlines to spaces and 1693 * install it in the variable. 1694 */ 1695 res[cc] = '\0'; 1696 cp = &res[cc]; 1697 1698 if (cc > 0 && *--cp == '\n') { 1699 /* 1700 * A final newline is just stripped 1701 */ 1702 *cp-- = '\0'; 1703 } 1704 while (cp >= res) { 1705 if (*cp == '\n') { 1706 *cp = ' '; 1707 } 1708 cp--; 1709 } 1710 break; 1711 } 1712 return res; 1713 bad: 1714 res = bmake_malloc(1); 1715 *res = '\0'; 1716 return res; 1717 } 1718 1719 /*- 1720 * Error -- 1721 * Print an error message given its format. 1722 * 1723 * Results: 1724 * None. 1725 * 1726 * Side Effects: 1727 * The message is printed. 1728 */ 1729 /* VARARGS */ 1730 void 1731 Error(const char *fmt, ...) 1732 { 1733 va_list ap; 1734 FILE *err_file; 1735 1736 err_file = debug_file; 1737 if (err_file == stdout) 1738 err_file = stderr; 1739 (void)fflush(stdout); 1740 for (;;) { 1741 va_start(ap, fmt); 1742 fprintf(err_file, "%s: ", progname); 1743 (void)vfprintf(err_file, fmt, ap); 1744 va_end(ap); 1745 (void)fprintf(err_file, "\n"); 1746 (void)fflush(err_file); 1747 if (err_file == stderr) 1748 break; 1749 err_file = stderr; 1750 } 1751 } 1752 1753 /*- 1754 * Fatal -- 1755 * Produce a Fatal error message. If jobs are running, waits for them 1756 * to finish. 1757 * 1758 * Results: 1759 * None 1760 * 1761 * Side Effects: 1762 * The program exits 1763 */ 1764 /* VARARGS */ 1765 void 1766 Fatal(const char *fmt, ...) 1767 { 1768 va_list ap; 1769 1770 va_start(ap, fmt); 1771 if (jobsRunning) 1772 Job_Wait(); 1773 1774 (void)fflush(stdout); 1775 (void)vfprintf(stderr, fmt, ap); 1776 va_end(ap); 1777 (void)fprintf(stderr, "\n"); 1778 (void)fflush(stderr); 1779 1780 PrintOnError(NULL, NULL); 1781 1782 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1783 Targ_PrintGraph(2); 1784 Trace_Log(MAKEERROR, 0); 1785 exit(2); /* Not 1 so -q can distinguish error */ 1786 } 1787 1788 /* 1789 * Punt -- 1790 * Major exception once jobs are being created. Kills all jobs, prints 1791 * a message and exits. 1792 * 1793 * Results: 1794 * None 1795 * 1796 * Side Effects: 1797 * All children are killed indiscriminately and the program Lib_Exits 1798 */ 1799 /* VARARGS */ 1800 void 1801 Punt(const char *fmt, ...) 1802 { 1803 va_list ap; 1804 1805 va_start(ap, fmt); 1806 (void)fflush(stdout); 1807 (void)fprintf(stderr, "%s: ", progname); 1808 (void)vfprintf(stderr, fmt, ap); 1809 va_end(ap); 1810 (void)fprintf(stderr, "\n"); 1811 (void)fflush(stderr); 1812 1813 PrintOnError(NULL, NULL); 1814 1815 DieHorribly(); 1816 } 1817 1818 /*- 1819 * DieHorribly -- 1820 * Exit without giving a message. 1821 * 1822 * Results: 1823 * None 1824 * 1825 * Side Effects: 1826 * A big one... 1827 */ 1828 void 1829 DieHorribly(void) 1830 { 1831 if (jobsRunning) 1832 Job_AbortAll(); 1833 if (DEBUG(GRAPH2)) 1834 Targ_PrintGraph(2); 1835 Trace_Log(MAKEERROR, 0); 1836 exit(2); /* Not 1, so -q can distinguish error */ 1837 } 1838 1839 /* 1840 * Finish -- 1841 * Called when aborting due to errors in child shell to signal 1842 * abnormal exit. 1843 * 1844 * Results: 1845 * None 1846 * 1847 * Side Effects: 1848 * The program exits 1849 */ 1850 void 1851 Finish(int errors) 1852 /* number of errors encountered in Make_Make */ 1853 { 1854 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1855 } 1856 1857 /* 1858 * eunlink -- 1859 * Remove a file carefully, avoiding directories. 1860 */ 1861 int 1862 eunlink(const char *file) 1863 { 1864 struct stat st; 1865 1866 if (lstat(file, &st) == -1) 1867 return -1; 1868 1869 if (S_ISDIR(st.st_mode)) { 1870 errno = EISDIR; 1871 return -1; 1872 } 1873 return unlink(file); 1874 } 1875 1876 /* 1877 * execError -- 1878 * Print why exec failed, avoiding stdio. 1879 */ 1880 void 1881 execError(const char *af, const char *av) 1882 { 1883 #ifdef USE_IOVEC 1884 int i = 0; 1885 struct iovec iov[8]; 1886 #define IOADD(s) \ 1887 (void)(iov[i].iov_base = UNCONST(s), \ 1888 iov[i].iov_len = strlen(iov[i].iov_base), \ 1889 i++) 1890 #else 1891 #define IOADD(void)write(2, s, strlen(s)) 1892 #endif 1893 1894 IOADD(progname); 1895 IOADD(": "); 1896 IOADD(af); 1897 IOADD("("); 1898 IOADD(av); 1899 IOADD(") failed ("); 1900 IOADD(strerror(errno)); 1901 IOADD(")\n"); 1902 1903 #ifdef USE_IOVEC 1904 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1905 continue; 1906 #endif 1907 } 1908 1909 /* 1910 * usage -- 1911 * exit with usage message 1912 */ 1913 static void 1914 usage(void) 1915 { 1916 char *p; 1917 if ((p = strchr(progname, '[')) != NULL) 1918 *p = '\0'; 1919 1920 (void)fprintf(stderr, 1921 "usage: %s [-BeikNnqrstWwX] \n\ 1922 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1923 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1924 [-V variable] [variable=value] [target ...]\n", progname); 1925 exit(2); 1926 } 1927 1928 /* 1929 * realpath(3) can get expensive, cache results... 1930 */ 1931 static GNode *cached_realpaths = NULL; 1932 1933 static GNode * 1934 get_cached_realpaths(void) 1935 { 1936 1937 if (!cached_realpaths) { 1938 cached_realpaths = Targ_NewGN("Realpath"); 1939 #ifndef DEBUG_REALPATH_CACHE 1940 cached_realpaths->flags = INTERNAL; 1941 #endif 1942 } 1943 1944 return cached_realpaths; 1945 } 1946 1947 /* purge any relative paths */ 1948 static void 1949 purge_cached_realpaths(void) 1950 { 1951 GNode *cache = get_cached_realpaths(); 1952 Hash_Entry *he, *nhe; 1953 Hash_Search hs; 1954 1955 he = Hash_EnumFirst(&cache->context, &hs); 1956 while (he) { 1957 nhe = Hash_EnumNext(&hs); 1958 if (he->name[0] != '/') { 1959 if (DEBUG(DIR)) 1960 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1961 Hash_DeleteEntry(&cache->context, he); 1962 } 1963 he = nhe; 1964 } 1965 } 1966 1967 char * 1968 cached_realpath(const char *pathname, char *resolved) 1969 { 1970 GNode *cache; 1971 char *rp, *cp; 1972 1973 if (!pathname || !pathname[0]) 1974 return NULL; 1975 1976 cache = get_cached_realpaths(); 1977 1978 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1979 /* a hit */ 1980 strncpy(resolved, rp, MAXPATHLEN); 1981 resolved[MAXPATHLEN - 1] = '\0'; 1982 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1983 Var_Set(pathname, rp, cache, 0); 1984 } /* else should we negative-cache? */ 1985 1986 free(cp); 1987 return rp ? resolved : NULL; 1988 } 1989 1990 int 1991 PrintAddr(void *a, void *b) 1992 { 1993 printf("%lx ", (unsigned long) a); 1994 return b ? 0 : 0; 1995 } 1996 1997 1998 static int 1999 addErrorCMD(void *cmdp, void *gnp) 2000 { 2001 if (cmdp == NULL) 2002 return 1; /* stop */ 2003 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 2004 return 0; 2005 } 2006 2007 void 2008 PrintOnError(GNode *gn, const char *s) 2009 { 2010 static GNode *en = NULL; 2011 char tmp[64]; 2012 char *cp; 2013 2014 if (s) 2015 printf("%s", s); 2016 2017 printf("\n%s: stopped in %s\n", progname, curdir); 2018 2019 if (en) 2020 return; /* we've been here! */ 2021 if (gn) { 2022 /* 2023 * We can print this even if there is no .ERROR target. 2024 */ 2025 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 2026 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2027 Lst_ForEach(gn->commands, addErrorCMD, gn); 2028 } 2029 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2030 sizeof(tmp) - 1); 2031 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2032 if (cp) { 2033 if (*cp) 2034 printf("%s", cp); 2035 free(cp); 2036 } 2037 fflush(stdout); 2038 2039 /* 2040 * Finally, see if there is a .ERROR target, and run it if so. 2041 */ 2042 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2043 if (en) { 2044 en->type |= OP_SPECIAL; 2045 Compat_Make(en, en); 2046 } 2047 } 2048 2049 void 2050 Main_ExportMAKEFLAGS(Boolean first) 2051 { 2052 static int once = 1; 2053 char tmp[64]; 2054 char *s; 2055 2056 if (once != first) 2057 return; 2058 once = 0; 2059 2060 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 2061 sizeof(tmp)); 2062 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES); 2063 if (s && *s) { 2064 #ifdef POSIX 2065 setenv("MAKEFLAGS", s, 1); 2066 #else 2067 setenv("MAKE", s, 1); 2068 #endif 2069 } 2070 } 2071 2072 char * 2073 getTmpdir(void) 2074 { 2075 static char *tmpdir = NULL; 2076 2077 if (!tmpdir) { 2078 struct stat st; 2079 2080 /* 2081 * Honor $TMPDIR but only if it is valid. 2082 * Ensure it ends with /. 2083 */ 2084 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2085 VARF_WANTRES); 2086 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2087 free(tmpdir); 2088 tmpdir = bmake_strdup(_PATH_TMP); 2089 } 2090 } 2091 return tmpdir; 2092 } 2093 2094 /* 2095 * Create and open a temp file using "pattern". 2096 * If "fnamep" is provided set it to a copy of the filename created. 2097 * Otherwise unlink the file once open. 2098 */ 2099 int 2100 mkTempFile(const char *pattern, char **fnamep) 2101 { 2102 static char *tmpdir = NULL; 2103 char tfile[MAXPATHLEN]; 2104 int fd; 2105 2106 if (!pattern) 2107 pattern = TMPPAT; 2108 if (!tmpdir) 2109 tmpdir = getTmpdir(); 2110 if (pattern[0] == '/') { 2111 snprintf(tfile, sizeof(tfile), "%s", pattern); 2112 } else { 2113 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2114 } 2115 if ((fd = mkstemp(tfile)) < 0) 2116 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2117 if (fnamep) { 2118 *fnamep = bmake_strdup(tfile); 2119 } else { 2120 unlink(tfile); /* we just want the descriptor */ 2121 } 2122 return fd; 2123 } 2124 2125 /* 2126 * Convert a string representation of a boolean. 2127 * Anything that looks like "No", "False", "Off", "0" etc, 2128 * is FALSE, otherwise TRUE. 2129 */ 2130 Boolean 2131 s2Boolean(const char *s, Boolean bf) 2132 { 2133 if (s) { 2134 switch(*s) { 2135 case '\0': /* not set - the default wins */ 2136 break; 2137 case '0': 2138 case 'F': 2139 case 'f': 2140 case 'N': 2141 case 'n': 2142 bf = FALSE; 2143 break; 2144 case 'O': 2145 case 'o': 2146 switch (s[1]) { 2147 case 'F': 2148 case 'f': 2149 bf = FALSE; 2150 break; 2151 default: 2152 bf = TRUE; 2153 break; 2154 } 2155 break; 2156 default: 2157 bf = TRUE; 2158 break; 2159 } 2160 } 2161 return (bf); 2162 } 2163 2164 /* 2165 * Return a Boolean based on setting of a knob. 2166 * 2167 * If the knob is not set, the supplied default is the return value. 2168 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2169 * is FALSE, otherwise TRUE. 2170 */ 2171 Boolean 2172 getBoolean(const char *name, Boolean bf) 2173 { 2174 char tmp[64]; 2175 char *cp; 2176 2177 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2178 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2179 2180 if (cp) { 2181 bf = s2Boolean(cp, bf); 2182 free(cp); 2183 } 2184 } 2185 return (bf); 2186 } 2187
Indexes created Tue Sep 23 23:09:58 GMT 2025