main.c revision 1.269
1 /* $NetBSD: main.c,v 1.269 2017/06/17 19:59:28 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 1.269 2017/06/17 19:59:28 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 1.269 2017/06/17 19:59:28 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, "${" MAKE_MODE ":tl}", 833 VAR_GLOBAL, VARF_WANTRES); 834 835 if (mode && *mode) { 836 if (strstr(mode, "compat")) { 837 compatMake = TRUE; 838 forceJobs = FALSE; 839 } 840 #if USE_META 841 if (strstr(mode, "meta")) 842 meta_mode_init(mode); 843 #endif 844 } 845 846 free(mp); 847 } 848 849 static void 850 doPrintVars(void) 851 { 852 LstNode ln; 853 Boolean expandVars; 854 855 if (debugVflag) 856 expandVars = FALSE; 857 else 858 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 859 860 for (ln = Lst_First(variables); ln != NULL; 861 ln = Lst_Succ(ln)) { 862 char *var = (char *)Lst_Datum(ln); 863 char *value; 864 char *p1; 865 Boolean noExpand; 866 867 if ((noExpand = (*var == '\\'))) 868 var++; 869 870 if (strchr(var, '$')) { 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), "${%s}", var); 876 877 if (len >= (int)sizeof(tmp)) 878 Fatal("%s: variable name too big: %s", 879 progname, var); 880 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 881 VARF_WANTRES); 882 } else { 883 value = Var_Value(var, VAR_GLOBAL, &p1); 884 if (!noExpand && value && *value == '$') { 885 value = Var_Subst(NULL, value, 886 VAR_GLOBAL, VARF_WANTRES); 887 free(p1); 888 p1 = value; 889 } 890 } 891 printf("%s\n", value ? value : ""); 892 free(p1); 893 } 894 } 895 896 static Boolean 897 runTargets(void) 898 { 899 Lst targs; /* target nodes to create -- passed to Make_Init */ 900 Boolean outOfDate; /* FALSE if all targets up to date */ 901 902 /* 903 * Have now read the entire graph and need to make a list of 904 * targets to create. If none was given on the command line, 905 * we consult the parsing module to find the main target(s) 906 * to create. 907 */ 908 if (Lst_IsEmpty(create)) 909 targs = Parse_MainName(); 910 else 911 targs = Targ_FindList(create, TARG_CREATE); 912 913 if (!compatMake) { 914 /* 915 * Initialize job module before traversing the graph 916 * now that any .BEGIN and .END targets have been read. 917 * This is done only if the -q flag wasn't given 918 * (to prevent the .BEGIN from being executed should 919 * it exist). 920 */ 921 if (!queryFlag) { 922 Job_Init(); 923 jobsRunning = TRUE; 924 } 925 926 /* Traverse the graph, checking on all the targets */ 927 outOfDate = Make_Run(targs); 928 } else { 929 /* 930 * Compat_Init will take care of creating all the 931 * targets as well as initializing the module. 932 */ 933 Compat_Run(targs); 934 outOfDate = FALSE; 935 } 936 Lst_Destroy(targs, NULL); 937 return outOfDate; 938 } 939 940 /*- 941 * main -- 942 * The main function, for obvious reasons. Initializes variables 943 * and a few modules, then parses the arguments give it in the 944 * environment and on the command line. Reads the system makefile 945 * followed by either Makefile, makefile or the file given by the 946 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the 947 * flags it has received by then uses either the Make or the Compat 948 * module to create the initial list of targets. 949 * 950 * Results: 951 * If -q was given, exits -1 if anything was out-of-date. Else it exits 952 * 0. 953 * 954 * Side Effects: 955 * The program exits when done. Targets are created. etc. etc. etc. 956 */ 957 int 958 main(int argc, char **argv) 959 { 960 Boolean outOfDate; /* FALSE if all targets up to date */ 961 struct stat sb, sa; 962 char *p1, *path; 963 char mdpath[MAXPATHLEN]; 964 const char *machine = getenv("MACHINE"); 965 const char *machine_arch = getenv("MACHINE_ARCH"); 966 char *syspath = getenv("MAKESYSPATH"); 967 Lst sysMkPath; /* Path of sys.mk */ 968 char *cp = NULL, *start; 969 /* avoid faults on read-only strings */ 970 static char defsyspath[] = _PATH_DEFSYSPATH; 971 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 972 struct timeval rightnow; /* to initialize random seed */ 973 struct utsname utsname; 974 975 /* default to writing debug to stderr */ 976 debug_file = stderr; 977 978 #ifdef SIGINFO 979 (void)bmake_signal(SIGINFO, siginfo); 980 #endif 981 /* 982 * Set the seed to produce a different random sequence 983 * on each program execution. 984 */ 985 gettimeofday(&rightnow, NULL); 986 srandom(rightnow.tv_sec + rightnow.tv_usec); 987 988 if ((progname = strrchr(argv[0], '/')) != NULL) 989 progname++; 990 else 991 progname = argv[0]; 992 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)) 993 /* 994 * get rid of resource limit on file descriptors 995 */ 996 { 997 struct rlimit rl; 998 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 999 rl.rlim_cur != rl.rlim_max) { 1000 rl.rlim_cur = rl.rlim_max; 1001 (void)setrlimit(RLIMIT_NOFILE, &rl); 1002 } 1003 } 1004 #endif 1005 1006 if (uname(&utsname) == -1) { 1007 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1008 strerror(errno)); 1009 exit(2); 1010 } 1011 1012 /* 1013 * Get the name of this type of MACHINE from utsname 1014 * so we can share an executable for similar machines. 1015 * (i.e. m68k: amiga hp300, mac68k, sun3, ...) 1016 * 1017 * Note that both MACHINE and MACHINE_ARCH are decided at 1018 * run-time. 1019 */ 1020 if (!machine) { 1021 #ifdef MAKE_NATIVE 1022 machine = utsname.machine; 1023 #else 1024 #ifdef MAKE_MACHINE 1025 machine = MAKE_MACHINE; 1026 #else 1027 machine = "unknown"; 1028 #endif 1029 #endif 1030 } 1031 1032 if (!machine_arch) { 1033 #ifdef MAKE_NATIVE 1034 static char machine_arch_buf[sizeof(utsname.machine)]; 1035 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1036 size_t len = sizeof(machine_arch_buf); 1037 1038 if (sysctl(mib, __arraycount(mib), machine_arch_buf, 1039 &len, NULL, 0) < 0) { 1040 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname, 1041 strerror(errno)); 1042 exit(2); 1043 } 1044 1045 machine_arch = machine_arch_buf; 1046 #else 1047 #ifndef MACHINE_ARCH 1048 #ifdef MAKE_MACHINE_ARCH 1049 machine_arch = MAKE_MACHINE_ARCH; 1050 #else 1051 machine_arch = "unknown"; 1052 #endif 1053 #else 1054 machine_arch = MACHINE_ARCH; 1055 #endif 1056 #endif 1057 } 1058 1059 myPid = getpid(); /* remember this for vFork() */ 1060 1061 /* 1062 * Just in case MAKEOBJDIR wants us to do something tricky. 1063 */ 1064 Var_Init(); /* Initialize the lists of variables for 1065 * parsing arguments */ 1066 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0); 1067 Var_Set("MACHINE", machine, VAR_GLOBAL, 0); 1068 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0); 1069 #ifdef MAKE_VERSION 1070 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0); 1071 #endif 1072 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */ 1073 /* 1074 * This is the traditional preference for makefiles. 1075 */ 1076 #ifndef MAKEFILE_PREFERENCE_LIST 1077 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1078 #endif 1079 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST, 1080 VAR_GLOBAL, 0); 1081 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0); 1082 1083 create = Lst_Init(FALSE); 1084 makefiles = Lst_Init(FALSE); 1085 printVars = FALSE; 1086 debugVflag = FALSE; 1087 variables = Lst_Init(FALSE); 1088 beSilent = FALSE; /* Print commands as executed */ 1089 ignoreErrors = FALSE; /* Pay attention to non-zero returns */ 1090 noExecute = FALSE; /* Execute all commands */ 1091 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */ 1092 keepgoing = FALSE; /* Stop on error */ 1093 allPrecious = FALSE; /* Remove targets when interrupted */ 1094 deleteOnError = FALSE; /* Historical default behavior */ 1095 queryFlag = FALSE; /* This is not just a check-run */ 1096 noBuiltins = FALSE; /* Read the built-in rules */ 1097 touchFlag = FALSE; /* Actually update targets */ 1098 debug = 0; /* No debug verbosity, please. */ 1099 jobsRunning = FALSE; 1100 1101 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */ 1102 maxJobTokens = maxJobs; 1103 compatMake = FALSE; /* No compat mode */ 1104 ignorePWD = FALSE; 1105 1106 /* 1107 * Initialize the parsing, directory and variable modules to prepare 1108 * for the reading of inclusion paths and variable settings on the 1109 * command line 1110 */ 1111 1112 /* 1113 * Initialize various variables. 1114 * MAKE also gets this name, for compatibility 1115 * .MAKEFLAGS gets set to the empty string just in case. 1116 * MFLAGS also gets initialized empty, for compatibility. 1117 */ 1118 Parse_Init(); 1119 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) { 1120 /* 1121 * Leave alone if it is an absolute path, or if it does 1122 * not contain a '/' in which case we need to find it in 1123 * the path, like execvp(3) and the shells do. 1124 */ 1125 p1 = argv[0]; 1126 } else { 1127 /* 1128 * A relative path, canonicalize it. 1129 */ 1130 p1 = cached_realpath(argv[0], mdpath); 1131 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) { 1132 p1 = argv[0]; /* realpath failed */ 1133 } 1134 } 1135 Var_Set("MAKE", p1, VAR_GLOBAL, 0); 1136 Var_Set(".MAKE", p1, VAR_GLOBAL, 0); 1137 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0); 1138 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0); 1139 Var_Set("MFLAGS", "", VAR_GLOBAL, 0); 1140 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0); 1141 /* some makefiles need to know this */ 1142 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0); 1143 1144 /* 1145 * Set some other useful macros 1146 */ 1147 { 1148 char tmp[64], *ep; 1149 1150 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0; 1151 if (makelevel < 0) 1152 makelevel = 0; 1153 snprintf(tmp, sizeof(tmp), "%d", makelevel); 1154 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0); 1155 snprintf(tmp, sizeof(tmp), "%u", myPid); 1156 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0); 1157 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1158 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0); 1159 } 1160 if (makelevel > 0) { 1161 char pn[1024]; 1162 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel); 1163 progname = bmake_strdup(pn); 1164 } 1165 1166 #ifdef USE_META 1167 meta_init(); 1168 #endif 1169 Dir_Init(NULL); /* Dir_* safe to call from MainParseArgs */ 1170 1171 /* 1172 * First snag any flags out of the MAKE environment variable. 1173 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's 1174 * in a different format). 1175 */ 1176 #ifdef POSIX 1177 p1 = explode(getenv("MAKEFLAGS")); 1178 Main_ParseArgLine(p1); 1179 free(p1); 1180 #else 1181 Main_ParseArgLine(getenv("MAKE")); 1182 #endif 1183 1184 /* 1185 * Find where we are (now). 1186 * We take care of PWD for the automounter below... 1187 */ 1188 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1189 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1190 progname, strerror(errno)); 1191 exit(2); 1192 } 1193 1194 MainParseArgs(argc, argv); 1195 1196 if (enterFlag) 1197 printf("%s: Entering directory `%s'\n", progname, curdir); 1198 1199 /* 1200 * Verify that cwd is sane. 1201 */ 1202 if (stat(curdir, &sa) == -1) { 1203 (void)fprintf(stderr, "%s: %s: %s.\n", 1204 progname, curdir, strerror(errno)); 1205 exit(2); 1206 } 1207 1208 /* 1209 * All this code is so that we know where we are when we start up 1210 * on a different machine with pmake. 1211 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1212 * since the value of curdir can vary depending on how we got 1213 * here. Ie sitting at a shell prompt (shell that provides $PWD) 1214 * or via subdir.mk in which case its likely a shell which does 1215 * not provide it. 1216 * So, to stop it breaking this case only, we ignore PWD if 1217 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform. 1218 */ 1219 #ifndef NO_PWD_OVERRIDE 1220 if (!ignorePWD) { 1221 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL; 1222 1223 if ((pwd = getenv("PWD")) != NULL && 1224 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) { 1225 const char *makeobjdir = Var_Value("MAKEOBJDIR", 1226 VAR_CMD, &ptmp2); 1227 1228 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) { 1229 if (stat(pwd, &sb) == 0 && 1230 sa.st_ino == sb.st_ino && 1231 sa.st_dev == sb.st_dev) 1232 (void)strncpy(curdir, pwd, MAXPATHLEN); 1233 } 1234 } 1235 free(ptmp1); 1236 free(ptmp2); 1237 } 1238 #endif 1239 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0); 1240 1241 /* 1242 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, 1243 * MAKEOBJDIR is set in the environment, try only that value 1244 * and fall back to .CURDIR if it does not exist. 1245 * 1246 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1247 * and * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none 1248 * of these paths exist, just use .CURDIR. 1249 */ 1250 Dir_Init(curdir); 1251 (void)Main_SetObjdir("%s", curdir); 1252 1253 if (!Main_SetVarObjdir("MAKEOBJDIRPREFIX", curdir) && 1254 !Main_SetVarObjdir("MAKEOBJDIR", "") && 1255 !Main_SetObjdir("%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1256 !Main_SetObjdir("%s.%s", _PATH_OBJDIR, machine) && 1257 !Main_SetObjdir("%s", _PATH_OBJDIR)) 1258 (void)Main_SetObjdir("%s%s", _PATH_OBJDIRPREFIX, curdir); 1259 1260 /* 1261 * Initialize archive, target and suffix modules in preparation for 1262 * parsing the makefile(s) 1263 */ 1264 Arch_Init(); 1265 Targ_Init(); 1266 Suff_Init(); 1267 Trace_Init(tracefile); 1268 1269 DEFAULT = NULL; 1270 (void)time(&now); 1271 1272 Trace_Log(MAKESTART, NULL); 1273 1274 /* 1275 * Set up the .TARGETS variable to contain the list of targets to be 1276 * created. If none specified, make the variable empty -- the parser 1277 * will fill the thing in with the default or .MAIN target. 1278 */ 1279 if (!Lst_IsEmpty(create)) { 1280 LstNode ln; 1281 1282 for (ln = Lst_First(create); ln != NULL; 1283 ln = Lst_Succ(ln)) { 1284 char *name = (char *)Lst_Datum(ln); 1285 1286 Var_Append(".TARGETS", name, VAR_GLOBAL); 1287 } 1288 } else 1289 Var_Set(".TARGETS", "", VAR_GLOBAL, 0); 1290 1291 1292 /* 1293 * If no user-supplied system path was given (through the -m option) 1294 * add the directories from the DEFSYSPATH (more than one may be given 1295 * as dir1:...:dirn) to the system include path. 1296 */ 1297 if (syspath == NULL || *syspath == '\0') 1298 syspath = defsyspath; 1299 else 1300 syspath = bmake_strdup(syspath); 1301 1302 for (start = syspath; *start != '\0'; start = cp) { 1303 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1304 continue; 1305 if (*cp == ':') { 1306 *cp++ = '\0'; 1307 } 1308 /* look for magic parent directory search string */ 1309 if (strncmp(".../", start, 4) != 0) { 1310 (void)Dir_AddDir(defIncPath, start); 1311 } else { 1312 if (Dir_FindHereOrAbove(curdir, start+4, 1313 found_path, sizeof(found_path))) { 1314 (void)Dir_AddDir(defIncPath, found_path); 1315 } 1316 } 1317 } 1318 if (syspath != defsyspath) 1319 free(syspath); 1320 1321 /* 1322 * Read in the built-in rules first, followed by the specified 1323 * makefile, if it was (makefile != NULL), or the default 1324 * makefile and Makefile, in that order, if it wasn't. 1325 */ 1326 if (!noBuiltins) { 1327 LstNode ln; 1328 1329 sysMkPath = Lst_Init(FALSE); 1330 Dir_Expand(_PATH_DEFSYSMK, 1331 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1332 sysMkPath); 1333 if (Lst_IsEmpty(sysMkPath)) 1334 Fatal("%s: no system rules (%s).", progname, 1335 _PATH_DEFSYSMK); 1336 ln = Lst_Find(sysMkPath, NULL, ReadMakefile); 1337 if (ln == NULL) 1338 Fatal("%s: cannot open %s.", progname, 1339 (char *)Lst_Datum(ln)); 1340 } 1341 1342 if (!Lst_IsEmpty(makefiles)) { 1343 LstNode ln; 1344 1345 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles); 1346 if (ln != NULL) 1347 Fatal("%s: cannot open %s.", progname, 1348 (char *)Lst_Datum(ln)); 1349 } else { 1350 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}", 1351 VAR_CMD, VARF_WANTRES); 1352 if (p1) { 1353 (void)str2Lst_Append(makefiles, p1, NULL); 1354 (void)Lst_Find(makefiles, NULL, ReadMakefile); 1355 free(p1); 1356 } 1357 } 1358 1359 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1360 if (!noBuiltins || !printVars) { 1361 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}", 1362 VAR_CMD, VARF_WANTRES); 1363 doing_depend = TRUE; 1364 (void)ReadMakefile(makeDependfile, NULL); 1365 doing_depend = FALSE; 1366 } 1367 1368 if (enterFlagObj) 1369 printf("%s: Entering directory `%s'\n", progname, objdir); 1370 1371 MakeMode(NULL); 1372 1373 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1374 free(p1); 1375 1376 if (!forceJobs && !compatMake && 1377 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1378 char *value; 1379 int n; 1380 1381 value = Var_Subst(NULL, "${.MAKE.JOBS}", VAR_GLOBAL, VARF_WANTRES); 1382 n = strtol(value, NULL, 0); 1383 if (n < 1) { 1384 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1385 progname); 1386 exit(1); 1387 } 1388 if (n != maxJobs) { 1389 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1390 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1391 } 1392 maxJobs = n; 1393 maxJobTokens = maxJobs; 1394 forceJobs = TRUE; 1395 free(value); 1396 } 1397 1398 /* 1399 * Be compatible if user did not specify -j and did not explicitly 1400 * turned compatibility on 1401 */ 1402 if (!compatMake && !forceJobs) { 1403 compatMake = TRUE; 1404 } 1405 1406 if (!compatMake) 1407 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1408 if (DEBUG(JOB)) 1409 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1410 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1411 1412 if (!printVars) 1413 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1414 1415 1416 /* 1417 * For compatibility, look at the directories in the VPATH variable 1418 * and add them to the search path, if the variable is defined. The 1419 * variable's value is in the same format as the PATH envariable, i.e. 1420 * <directory>:<directory>:<directory>... 1421 */ 1422 if (Var_Exists("VPATH", VAR_CMD)) { 1423 char *vpath, savec; 1424 /* 1425 * GCC stores string constants in read-only memory, but 1426 * Var_Subst will want to write this thing, so store it 1427 * in an array 1428 */ 1429 static char VPATH[] = "${VPATH}"; 1430 1431 vpath = Var_Subst(NULL, VPATH, VAR_CMD, VARF_WANTRES); 1432 path = vpath; 1433 do { 1434 /* skip to end of directory */ 1435 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1436 continue; 1437 /* Save terminator character so know when to stop */ 1438 savec = *cp; 1439 *cp = '\0'; 1440 /* Add directory to search path */ 1441 (void)Dir_AddDir(dirSearchPath, path); 1442 *cp = savec; 1443 path = cp + 1; 1444 } while (savec == ':'); 1445 free(vpath); 1446 } 1447 1448 /* 1449 * Now that all search paths have been read for suffixes et al, it's 1450 * time to add the default search path to their lists... 1451 */ 1452 Suff_DoPaths(); 1453 1454 /* 1455 * Propagate attributes through :: dependency lists. 1456 */ 1457 Targ_Propagate(); 1458 1459 /* print the initial graph, if the user requested it */ 1460 if (DEBUG(GRAPH1)) 1461 Targ_PrintGraph(1); 1462 1463 /* print the values of any variables requested by the user */ 1464 if (printVars) { 1465 doPrintVars(); 1466 outOfDate = FALSE; 1467 } else { 1468 outOfDate = runTargets(); 1469 } 1470 1471 #ifdef CLEANUP 1472 Lst_Destroy(variables, NULL); 1473 Lst_Destroy(makefiles, NULL); 1474 Lst_Destroy(create, (FreeProc *)free); 1475 #endif 1476 1477 /* print the graph now it's been processed if the user requested it */ 1478 if (DEBUG(GRAPH2)) 1479 Targ_PrintGraph(2); 1480 1481 Trace_Log(MAKEEND, 0); 1482 1483 if (enterFlagObj) 1484 printf("%s: Leaving directory `%s'\n", progname, objdir); 1485 if (enterFlag) 1486 printf("%s: Leaving directory `%s'\n", progname, curdir); 1487 1488 #ifdef USE_META 1489 meta_finish(); 1490 #endif 1491 Suff_End(); 1492 Targ_End(); 1493 Arch_End(); 1494 Var_End(); 1495 Parse_End(); 1496 Dir_End(); 1497 Job_End(); 1498 Trace_End(); 1499 1500 return outOfDate ? 1 : 0; 1501 } 1502 1503 /*- 1504 * ReadMakefile -- 1505 * Open and parse the given makefile. 1506 * 1507 * Results: 1508 * 0 if ok. -1 if couldn't open file. 1509 * 1510 * Side Effects: 1511 * lots 1512 */ 1513 static int 1514 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1515 { 1516 const char *fname = p; /* makefile to read */ 1517 int fd; 1518 size_t len = MAXPATHLEN; 1519 char *name, *path = bmake_malloc(len); 1520 1521 if (!strcmp(fname, "-")) { 1522 Parse_File(NULL /*stdin*/, -1); 1523 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0); 1524 } else { 1525 /* if we've chdir'd, rebuild the path name */ 1526 if (strcmp(curdir, objdir) && *fname != '/') { 1527 size_t plen = strlen(curdir) + strlen(fname) + 2; 1528 if (len < plen) 1529 path = bmake_realloc(path, len = 2 * plen); 1530 1531 (void)snprintf(path, len, "%s/%s", curdir, fname); 1532 fd = open(path, O_RDONLY); 1533 if (fd != -1) { 1534 fname = path; 1535 goto found; 1536 } 1537 1538 /* If curdir failed, try objdir (ala .depend) */ 1539 plen = strlen(objdir) + strlen(fname) + 2; 1540 if (len < plen) 1541 path = bmake_realloc(path, len = 2 * plen); 1542 (void)snprintf(path, len, "%s/%s", objdir, fname); 1543 fd = open(path, O_RDONLY); 1544 if (fd != -1) { 1545 fname = path; 1546 goto found; 1547 } 1548 } else { 1549 fd = open(fname, O_RDONLY); 1550 if (fd != -1) 1551 goto found; 1552 } 1553 /* look in -I and system include directories. */ 1554 name = Dir_FindFile(fname, parseIncPath); 1555 if (!name) 1556 name = Dir_FindFile(fname, 1557 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1558 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1559 free(name); 1560 free(path); 1561 return(-1); 1562 } 1563 fname = name; 1564 /* 1565 * set the MAKEFILE variable desired by System V fans -- the 1566 * placement of the setting here means it gets set to the last 1567 * makefile specified, as it is set by SysV make. 1568 */ 1569 found: 1570 if (!doing_depend) 1571 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0); 1572 Parse_File(fname, fd); 1573 } 1574 free(path); 1575 return(0); 1576 } 1577 1578 1579 1580 /*- 1581 * Cmd_Exec -- 1582 * Execute the command in cmd, and return the output of that command 1583 * in a string. 1584 * 1585 * Results: 1586 * A string containing the output of the command, or the empty string 1587 * If errnum is not NULL, it contains the reason for the command failure 1588 * 1589 * Side Effects: 1590 * The string must be freed by the caller. 1591 */ 1592 char * 1593 Cmd_Exec(const char *cmd, const char **errnum) 1594 { 1595 const char *args[4]; /* Args for invoking the shell */ 1596 int fds[2]; /* Pipe streams */ 1597 int cpid; /* Child PID */ 1598 int pid; /* PID from wait() */ 1599 char *res; /* result */ 1600 int status; /* command exit status */ 1601 Buffer buf; /* buffer to store the result */ 1602 char *cp; 1603 int cc; /* bytes read, or -1 */ 1604 int savederr; /* saved errno */ 1605 1606 1607 *errnum = NULL; 1608 1609 if (!shellName) 1610 Shell_Init(); 1611 /* 1612 * Set up arguments for shell 1613 */ 1614 args[0] = shellName; 1615 args[1] = "-c"; 1616 args[2] = cmd; 1617 args[3] = NULL; 1618 1619 /* 1620 * Open a pipe for fetching its output 1621 */ 1622 if (pipe(fds) == -1) { 1623 *errnum = "Couldn't create pipe for \"%s\""; 1624 goto bad; 1625 } 1626 1627 /* 1628 * Fork 1629 */ 1630 switch (cpid = vFork()) { 1631 case 0: 1632 /* 1633 * Close input side of pipe 1634 */ 1635 (void)close(fds[0]); 1636 1637 /* 1638 * Duplicate the output stream to the shell's output, then 1639 * shut the extra thing down. Note we don't fetch the error 1640 * stream...why not? Why? 1641 */ 1642 (void)dup2(fds[1], 1); 1643 (void)close(fds[1]); 1644 1645 Var_ExportVars(); 1646 1647 (void)execv(shellPath, UNCONST(args)); 1648 _exit(1); 1649 /*NOTREACHED*/ 1650 1651 case -1: 1652 *errnum = "Couldn't exec \"%s\""; 1653 goto bad; 1654 1655 default: 1656 /* 1657 * No need for the writing half 1658 */ 1659 (void)close(fds[1]); 1660 1661 savederr = 0; 1662 Buf_Init(&buf, 0); 1663 1664 do { 1665 char result[BUFSIZ]; 1666 cc = read(fds[0], result, sizeof(result)); 1667 if (cc > 0) 1668 Buf_AddBytes(&buf, cc, result); 1669 } 1670 while (cc > 0 || (cc == -1 && errno == EINTR)); 1671 if (cc == -1) 1672 savederr = errno; 1673 1674 /* 1675 * Close the input side of the pipe. 1676 */ 1677 (void)close(fds[0]); 1678 1679 /* 1680 * Wait for the process to exit. 1681 */ 1682 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1683 JobReapChild(pid, status, FALSE); 1684 continue; 1685 } 1686 cc = Buf_Size(&buf); 1687 res = Buf_Destroy(&buf, FALSE); 1688 1689 if (savederr != 0) 1690 *errnum = "Couldn't read shell's output for \"%s\""; 1691 1692 if (WIFSIGNALED(status)) 1693 *errnum = "\"%s\" exited on a signal"; 1694 else if (WEXITSTATUS(status) != 0) 1695 *errnum = "\"%s\" returned non-zero status"; 1696 1697 /* 1698 * Null-terminate the result, convert newlines to spaces and 1699 * install it in the variable. 1700 */ 1701 res[cc] = '\0'; 1702 cp = &res[cc]; 1703 1704 if (cc > 0 && *--cp == '\n') { 1705 /* 1706 * A final newline is just stripped 1707 */ 1708 *cp-- = '\0'; 1709 } 1710 while (cp >= res) { 1711 if (*cp == '\n') { 1712 *cp = ' '; 1713 } 1714 cp--; 1715 } 1716 break; 1717 } 1718 return res; 1719 bad: 1720 res = bmake_malloc(1); 1721 *res = '\0'; 1722 return res; 1723 } 1724 1725 /*- 1726 * Error -- 1727 * Print an error message given its format. 1728 * 1729 * Results: 1730 * None. 1731 * 1732 * Side Effects: 1733 * The message is printed. 1734 */ 1735 /* VARARGS */ 1736 void 1737 Error(const char *fmt, ...) 1738 { 1739 va_list ap; 1740 FILE *err_file; 1741 1742 err_file = debug_file; 1743 if (err_file == stdout) 1744 err_file = stderr; 1745 (void)fflush(stdout); 1746 for (;;) { 1747 va_start(ap, fmt); 1748 fprintf(err_file, "%s: ", progname); 1749 (void)vfprintf(err_file, fmt, ap); 1750 va_end(ap); 1751 (void)fprintf(err_file, "\n"); 1752 (void)fflush(err_file); 1753 if (err_file == stderr) 1754 break; 1755 err_file = stderr; 1756 } 1757 } 1758 1759 /*- 1760 * Fatal -- 1761 * Produce a Fatal error message. If jobs are running, waits for them 1762 * to finish. 1763 * 1764 * Results: 1765 * None 1766 * 1767 * Side Effects: 1768 * The program exits 1769 */ 1770 /* VARARGS */ 1771 void 1772 Fatal(const char *fmt, ...) 1773 { 1774 va_list ap; 1775 1776 va_start(ap, fmt); 1777 if (jobsRunning) 1778 Job_Wait(); 1779 1780 (void)fflush(stdout); 1781 (void)vfprintf(stderr, fmt, ap); 1782 va_end(ap); 1783 (void)fprintf(stderr, "\n"); 1784 (void)fflush(stderr); 1785 1786 PrintOnError(NULL, NULL); 1787 1788 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1789 Targ_PrintGraph(2); 1790 Trace_Log(MAKEERROR, 0); 1791 exit(2); /* Not 1 so -q can distinguish error */ 1792 } 1793 1794 /* 1795 * Punt -- 1796 * Major exception once jobs are being created. Kills all jobs, prints 1797 * a message and exits. 1798 * 1799 * Results: 1800 * None 1801 * 1802 * Side Effects: 1803 * All children are killed indiscriminately and the program Lib_Exits 1804 */ 1805 /* VARARGS */ 1806 void 1807 Punt(const char *fmt, ...) 1808 { 1809 va_list ap; 1810 1811 va_start(ap, fmt); 1812 (void)fflush(stdout); 1813 (void)fprintf(stderr, "%s: ", progname); 1814 (void)vfprintf(stderr, fmt, ap); 1815 va_end(ap); 1816 (void)fprintf(stderr, "\n"); 1817 (void)fflush(stderr); 1818 1819 PrintOnError(NULL, NULL); 1820 1821 DieHorribly(); 1822 } 1823 1824 /*- 1825 * DieHorribly -- 1826 * Exit without giving a message. 1827 * 1828 * Results: 1829 * None 1830 * 1831 * Side Effects: 1832 * A big one... 1833 */ 1834 void 1835 DieHorribly(void) 1836 { 1837 if (jobsRunning) 1838 Job_AbortAll(); 1839 if (DEBUG(GRAPH2)) 1840 Targ_PrintGraph(2); 1841 Trace_Log(MAKEERROR, 0); 1842 exit(2); /* Not 1, so -q can distinguish error */ 1843 } 1844 1845 /* 1846 * Finish -- 1847 * Called when aborting due to errors in child shell to signal 1848 * abnormal exit. 1849 * 1850 * Results: 1851 * None 1852 * 1853 * Side Effects: 1854 * The program exits 1855 */ 1856 void 1857 Finish(int errors) 1858 /* number of errors encountered in Make_Make */ 1859 { 1860 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1861 } 1862 1863 /* 1864 * eunlink -- 1865 * Remove a file carefully, avoiding directories. 1866 */ 1867 int 1868 eunlink(const char *file) 1869 { 1870 struct stat st; 1871 1872 if (lstat(file, &st) == -1) 1873 return -1; 1874 1875 if (S_ISDIR(st.st_mode)) { 1876 errno = EISDIR; 1877 return -1; 1878 } 1879 return unlink(file); 1880 } 1881 1882 /* 1883 * execError -- 1884 * Print why exec failed, avoiding stdio. 1885 */ 1886 void 1887 execError(const char *af, const char *av) 1888 { 1889 #ifdef USE_IOVEC 1890 int i = 0; 1891 struct iovec iov[8]; 1892 #define IOADD(s) \ 1893 (void)(iov[i].iov_base = UNCONST(s), \ 1894 iov[i].iov_len = strlen(iov[i].iov_base), \ 1895 i++) 1896 #else 1897 #define IOADD(void)write(2, s, strlen(s)) 1898 #endif 1899 1900 IOADD(progname); 1901 IOADD(": "); 1902 IOADD(af); 1903 IOADD("("); 1904 IOADD(av); 1905 IOADD(") failed ("); 1906 IOADD(strerror(errno)); 1907 IOADD(")\n"); 1908 1909 #ifdef USE_IOVEC 1910 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1911 continue; 1912 #endif 1913 } 1914 1915 /* 1916 * usage -- 1917 * exit with usage message 1918 */ 1919 static void 1920 usage(void) 1921 { 1922 char *p; 1923 if ((p = strchr(progname, '[')) != NULL) 1924 *p = '\0'; 1925 1926 (void)fprintf(stderr, 1927 "usage: %s [-BeikNnqrstWwX] \n\ 1928 [-C directory] [-D variable] [-d flags] [-f makefile]\n\ 1929 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\ 1930 [-V variable] [variable=value] [target ...]\n", progname); 1931 exit(2); 1932 } 1933 1934 /* 1935 * realpath(3) can get expensive, cache results... 1936 */ 1937 static GNode *cached_realpaths = NULL; 1938 1939 static GNode * 1940 get_cached_realpaths(void) 1941 { 1942 1943 if (!cached_realpaths) { 1944 cached_realpaths = Targ_NewGN("Realpath"); 1945 #ifndef DEBUG_REALPATH_CACHE 1946 cached_realpaths->flags = INTERNAL; 1947 #endif 1948 } 1949 1950 return cached_realpaths; 1951 } 1952 1953 /* purge any relative paths */ 1954 static void 1955 purge_cached_realpaths(void) 1956 { 1957 GNode *cache = get_cached_realpaths(); 1958 Hash_Entry *he, *nhe; 1959 Hash_Search hs; 1960 1961 he = Hash_EnumFirst(&cache->context, &hs); 1962 while (he) { 1963 nhe = Hash_EnumNext(&hs); 1964 if (he->name[0] != '/') { 1965 if (DEBUG(DIR)) 1966 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1967 Hash_DeleteEntry(&cache->context, he); 1968 } 1969 he = nhe; 1970 } 1971 } 1972 1973 char * 1974 cached_realpath(const char *pathname, char *resolved) 1975 { 1976 GNode *cache; 1977 char *rp, *cp; 1978 1979 if (!pathname || !pathname[0]) 1980 return NULL; 1981 1982 cache = get_cached_realpaths(); 1983 1984 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1985 /* a hit */ 1986 strncpy(resolved, rp, MAXPATHLEN); 1987 resolved[MAXPATHLEN - 1] = '\0'; 1988 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1989 Var_Set(pathname, rp, cache, 0); 1990 } /* else should we negative-cache? */ 1991 1992 free(cp); 1993 return rp ? resolved : NULL; 1994 } 1995 1996 int 1997 PrintAddr(void *a, void *b) 1998 { 1999 printf("%lx ", (unsigned long) a); 2000 return b ? 0 : 0; 2001 } 2002 2003 2004 static int 2005 addErrorCMD(void *cmdp, void *gnp) 2006 { 2007 if (cmdp == NULL) 2008 return 1; /* stop */ 2009 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 2010 return 0; 2011 } 2012 2013 void 2014 PrintOnError(GNode *gn, const char *s) 2015 { 2016 static GNode *en = NULL; 2017 char tmp[64]; 2018 char *cp; 2019 2020 if (s) 2021 printf("%s", s); 2022 2023 printf("\n%s: stopped in %s\n", progname, curdir); 2024 2025 if (en) 2026 return; /* we've been here! */ 2027 if (gn) { 2028 /* 2029 * We can print this even if there is no .ERROR target. 2030 */ 2031 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0); 2032 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2033 Lst_ForEach(gn->commands, addErrorCMD, gn); 2034 } 2035 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2036 sizeof(tmp) - 1); 2037 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2038 if (cp) { 2039 if (*cp) 2040 printf("%s", cp); 2041 free(cp); 2042 } 2043 fflush(stdout); 2044 2045 /* 2046 * Finally, see if there is a .ERROR target, and run it if so. 2047 */ 2048 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2049 if (en) { 2050 en->type |= OP_SPECIAL; 2051 Compat_Make(en, en); 2052 } 2053 } 2054 2055 void 2056 Main_ExportMAKEFLAGS(Boolean first) 2057 { 2058 static int once = 1; 2059 char tmp[64]; 2060 char *s; 2061 2062 if (once != first) 2063 return; 2064 once = 0; 2065 2066 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 2067 sizeof(tmp)); 2068 s = Var_Subst(NULL, tmp, VAR_CMD, VARF_WANTRES); 2069 if (s && *s) { 2070 #ifdef POSIX 2071 setenv("MAKEFLAGS", s, 1); 2072 #else 2073 setenv("MAKE", s, 1); 2074 #endif 2075 } 2076 } 2077 2078 char * 2079 getTmpdir(void) 2080 { 2081 static char *tmpdir = NULL; 2082 2083 if (!tmpdir) { 2084 struct stat st; 2085 2086 /* 2087 * Honor $TMPDIR but only if it is valid. 2088 * Ensure it ends with /. 2089 */ 2090 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2091 VARF_WANTRES); 2092 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2093 free(tmpdir); 2094 tmpdir = bmake_strdup(_PATH_TMP); 2095 } 2096 } 2097 return tmpdir; 2098 } 2099 2100 /* 2101 * Create and open a temp file using "pattern". 2102 * If "fnamep" is provided set it to a copy of the filename created. 2103 * Otherwise unlink the file once open. 2104 */ 2105 int 2106 mkTempFile(const char *pattern, char **fnamep) 2107 { 2108 static char *tmpdir = NULL; 2109 char tfile[MAXPATHLEN]; 2110 int fd; 2111 2112 if (!pattern) 2113 pattern = TMPPAT; 2114 if (!tmpdir) 2115 tmpdir = getTmpdir(); 2116 if (pattern[0] == '/') { 2117 snprintf(tfile, sizeof(tfile), "%s", pattern); 2118 } else { 2119 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2120 } 2121 if ((fd = mkstemp(tfile)) < 0) 2122 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2123 if (fnamep) { 2124 *fnamep = bmake_strdup(tfile); 2125 } else { 2126 unlink(tfile); /* we just want the descriptor */ 2127 } 2128 return fd; 2129 } 2130 2131 /* 2132 * Convert a string representation of a boolean. 2133 * Anything that looks like "No", "False", "Off", "0" etc, 2134 * is FALSE, otherwise TRUE. 2135 */ 2136 Boolean 2137 s2Boolean(const char *s, Boolean bf) 2138 { 2139 if (s) { 2140 switch(*s) { 2141 case '\0': /* not set - the default wins */ 2142 break; 2143 case '0': 2144 case 'F': 2145 case 'f': 2146 case 'N': 2147 case 'n': 2148 bf = FALSE; 2149 break; 2150 case 'O': 2151 case 'o': 2152 switch (s[1]) { 2153 case 'F': 2154 case 'f': 2155 bf = FALSE; 2156 break; 2157 default: 2158 bf = TRUE; 2159 break; 2160 } 2161 break; 2162 default: 2163 bf = TRUE; 2164 break; 2165 } 2166 } 2167 return (bf); 2168 } 2169 2170 /* 2171 * Return a Boolean based on setting of a knob. 2172 * 2173 * If the knob is not set, the supplied default is the return value. 2174 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2175 * is FALSE, otherwise TRUE. 2176 */ 2177 Boolean 2178 getBoolean(const char *name, Boolean bf) 2179 { 2180 char tmp[64]; 2181 char *cp; 2182 2183 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2184 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, VARF_WANTRES); 2185 2186 if (cp) { 2187 bf = s2Boolean(cp, bf); 2188 free(cp); 2189 } 2190 } 2191 return (bf); 2192 } 2193
Indexes created Tue Sep 23 23:09:58 GMT 2025