main.c revision 1.312
1 /* $NetBSD: main.c,v 1.312 2020/08/23 18:26:35 rillig Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1989, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Adam de Boor. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1989 by Berkeley Softworks 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Adam de Boor. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #ifndef MAKE_NATIVE 72 static char rcsid[] = "$NetBSD: main.c,v 1.312 2020/08/23 18:26:35 rillig 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 1.312 2020/08/23 18:26:35 rillig 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 <ctype.h> 128 #include <errno.h> 129 #include <signal.h> 130 #include <stdarg.h> 131 #include <stdio.h> 132 #include <stdlib.h> 133 #include <time.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 int printVars; /* -[vV] argument */ 159 #define COMPAT_VARS 1 160 #define EXPAND_VARS 2 161 static Lst variables; /* list of variables to print */ 162 int maxJobs; /* -j argument */ 163 static int maxJobTokens; /* -j argument */ 164 Boolean compatMake; /* -B argument */ 165 int debug; /* -d argument */ 166 Boolean debugVflag; /* -dV */ 167 Boolean noExecute; /* -n flag */ 168 Boolean noRecursiveExecute; /* -N flag */ 169 Boolean keepgoing; /* -k flag */ 170 Boolean queryFlag; /* -q flag */ 171 Boolean touchFlag; /* -t flag */ 172 Boolean enterFlag; /* -w flag */ 173 Boolean enterFlagObj; /* -w and objdir != srcdir */ 174 Boolean ignoreErrors; /* -i flag */ 175 Boolean beSilent; /* -s flag */ 176 Boolean oldVars; /* variable substitution style */ 177 Boolean checkEnvFirst; /* -e flag */ 178 Boolean parseWarnFatal; /* -W flag */ 179 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 180 Boolean varNoExportEnv; /* -X flag */ 181 Boolean doing_depend; /* Set while reading .depend */ 182 static Boolean jobsRunning; /* TRUE if the jobs might be running */ 183 static const char * tracefile; 184 static void MainParseArgs(int, char **); 185 static int ReadMakefile(const void *, const void *); 186 static void usage(void) MAKE_ATTR_DEAD; 187 static void purge_cached_realpaths(void); 188 189 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */ 190 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 191 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 192 char *progname; /* the program name */ 193 char *makeDependfile; 194 pid_t myPid; 195 int makelevel; 196 197 FILE *debug_file; 198 199 Boolean forceJobs = FALSE; 200 201 extern Lst parseIncPath; 202 203 /* 204 * For compatibility with the POSIX version of MAKEFLAGS that includes 205 * all the options with out -, convert flags to -f -l -a -g -s. 206 */ 207 static char * 208 explode(const char *flags) 209 { 210 size_t len; 211 char *nf, *st; 212 const char *f; 213 214 if (flags == NULL) 215 return NULL; 216 217 for (f = flags; *f; f++) 218 if (!isalpha((unsigned char)*f)) 219 break; 220 221 if (*f) 222 return bmake_strdup(flags); 223 224 len = strlen(flags); 225 st = nf = bmake_malloc(len * 3 + 1); 226 while (*flags) { 227 *nf++ = '-'; 228 *nf++ = *flags++; 229 *nf++ = ' '; 230 } 231 *nf = '\0'; 232 return st; 233 } 234 235 static void 236 parse_debug_options(const char *argvalue) 237 { 238 const char *modules; 239 const char *mode; 240 char *fname; 241 int len; 242 243 for (modules = argvalue; *modules; ++modules) { 244 switch (*modules) { 245 case 'A': 246 debug = ~(0|DEBUG_LINT); 247 break; 248 case 'a': 249 debug |= DEBUG_ARCH; 250 break; 251 case 'C': 252 debug |= DEBUG_CWD; 253 break; 254 case 'c': 255 debug |= DEBUG_COND; 256 break; 257 case 'd': 258 debug |= DEBUG_DIR; 259 break; 260 case 'e': 261 debug |= DEBUG_ERROR; 262 break; 263 case 'f': 264 debug |= DEBUG_FOR; 265 break; 266 case 'g': 267 if (modules[1] == '1') { 268 debug |= DEBUG_GRAPH1; 269 ++modules; 270 } 271 else if (modules[1] == '2') { 272 debug |= DEBUG_GRAPH2; 273 ++modules; 274 } 275 else if (modules[1] == '3') { 276 debug |= DEBUG_GRAPH3; 277 ++modules; 278 } 279 break; 280 case 'h': 281 debug |= DEBUG_HASH; 282 break; 283 case 'j': 284 debug |= DEBUG_JOB; 285 break; 286 case 'L': 287 debug |= DEBUG_LINT; 288 break; 289 case 'l': 290 debug |= DEBUG_LOUD; 291 break; 292 case 'M': 293 debug |= DEBUG_META; 294 break; 295 case 'm': 296 debug |= DEBUG_MAKE; 297 break; 298 case 'n': 299 debug |= DEBUG_SCRIPT; 300 break; 301 case 'p': 302 debug |= DEBUG_PARSE; 303 break; 304 case 's': 305 debug |= DEBUG_SUFF; 306 break; 307 case 't': 308 debug |= DEBUG_TARG; 309 break; 310 case 'V': 311 debugVflag = TRUE; 312 break; 313 case 'v': 314 debug |= DEBUG_VAR; 315 break; 316 case 'x': 317 debug |= DEBUG_SHELL; 318 break; 319 case 'F': 320 if (debug_file != stdout && debug_file != stderr) 321 fclose(debug_file); 322 if (*++modules == '+') { 323 modules++; 324 mode = "a"; 325 } else 326 mode = "w"; 327 if (strcmp(modules, "stdout") == 0) { 328 debug_file = stdout; 329 goto debug_setbuf; 330 } 331 if (strcmp(modules, "stderr") == 0) { 332 debug_file = stderr; 333 goto debug_setbuf; 334 } 335 len = strlen(modules); 336 fname = bmake_malloc(len + 20); 337 memcpy(fname, modules, len + 1); 338 /* Let the filename be modified by the pid */ 339 if (strcmp(fname + len - 3, ".%d") == 0) 340 snprintf(fname + len - 2, 20, "%d", getpid()); 341 debug_file = fopen(fname, mode); 342 if (!debug_file) { 343 fprintf(stderr, "Cannot open debug file %s\n", 344 fname); 345 usage(); 346 } 347 free(fname); 348 goto debug_setbuf; 349 default: 350 (void)fprintf(stderr, 351 "%s: illegal argument to d option -- %c\n", 352 progname, *modules); 353 usage(); 354 } 355 } 356 debug_setbuf: 357 /* 358 * Make the debug_file unbuffered, and make 359 * stdout line buffered (unless debugfile == stdout). 360 */ 361 setvbuf(debug_file, NULL, _IONBF, 0); 362 if (debug_file != stdout) { 363 setvbuf(stdout, NULL, _IOLBF, 0); 364 } 365 } 366 367 /* 368 * does path contain any relative components 369 */ 370 static Boolean 371 is_relpath(const char *path) 372 { 373 const char *cp; 374 375 if (path[0] != '/') 376 return TRUE; 377 cp = path; 378 while ((cp = strstr(cp, "/.")) != NULL) { 379 cp += 2; 380 if (cp[0] == '/' || cp[0] == '\0') 381 return TRUE; 382 else if (cp[0] == '.') { 383 if (cp[1] == '/' || cp[1] == '\0') 384 return TRUE; 385 } 386 } 387 return FALSE; 388 } 389 390 /*- 391 * MainParseArgs -- 392 * Parse a given argument vector. Called from main() and from 393 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 394 * 395 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 396 * 397 * Results: 398 * None 399 * 400 * Side Effects: 401 * Various global and local flags will be set depending on the flags 402 * given 403 */ 404 static void 405 MainParseArgs(int argc, char **argv) 406 { 407 char *p; 408 int c = '?'; 409 int arginc; 410 char *argvalue; 411 const char *getopt_def; 412 struct stat sa, sb; 413 char *optscan; 414 Boolean inOption, dashDash = FALSE; 415 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */ 416 417 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w" 418 /* Can't actually use getopt(3) because rescanning is not portable */ 419 420 getopt_def = OPTFLAGS; 421 rearg: 422 inOption = FALSE; 423 optscan = NULL; 424 while(argc > 1) { 425 char *getopt_spec; 426 if(!inOption) 427 optscan = argv[1]; 428 c = *optscan++; 429 arginc = 0; 430 if(inOption) { 431 if(c == '\0') { 432 ++argv; 433 --argc; 434 inOption = FALSE; 435 continue; 436 } 437 } else { 438 if (c != '-' || dashDash) 439 break; 440 inOption = TRUE; 441 c = *optscan++; 442 } 443 /* '-' found at some earlier point */ 444 getopt_spec = strchr(getopt_def, c); 445 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') { 446 /* -<something> found, and <something> should have an arg */ 447 inOption = FALSE; 448 arginc = 1; 449 argvalue = optscan; 450 if(*argvalue == '\0') { 451 if (argc < 3) 452 goto noarg; 453 argvalue = argv[2]; 454 arginc = 2; 455 } 456 } else { 457 argvalue = NULL; 458 } 459 switch(c) { 460 case '\0': 461 arginc = 1; 462 inOption = FALSE; 463 break; 464 case 'B': 465 compatMake = TRUE; 466 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL); 467 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL); 468 break; 469 case 'C': 470 if (chdir(argvalue) == -1) { 471 (void)fprintf(stderr, 472 "%s: chdir %s: %s\n", 473 progname, argvalue, 474 strerror(errno)); 475 exit(1); 476 } 477 if (getcwd(curdir, MAXPATHLEN) == NULL) { 478 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 479 exit(2); 480 } 481 if (!is_relpath(argvalue) && 482 stat(argvalue, &sa) != -1 && 483 stat(curdir, &sb) != -1 && 484 sa.st_ino == sb.st_ino && 485 sa.st_dev == sb.st_dev) 486 strncpy(curdir, argvalue, MAXPATHLEN); 487 ignorePWD = TRUE; 488 break; 489 case 'D': 490 if (argvalue == NULL || argvalue[0] == 0) goto noarg; 491 Var_Set(argvalue, "1", VAR_GLOBAL); 492 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL); 493 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 494 break; 495 case 'I': 496 if (argvalue == NULL) goto noarg; 497 Parse_AddIncludeDir(argvalue); 498 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL); 499 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 500 break; 501 case 'J': 502 if (argvalue == NULL) goto noarg; 503 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) { 504 (void)fprintf(stderr, 505 "%s: internal error -- J option malformed (%s)\n", 506 progname, argvalue); 507 usage(); 508 } 509 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 510 (fcntl(jp_1, F_GETFD, 0) < 0)) { 511 #if 0 512 (void)fprintf(stderr, 513 "%s: ###### warning -- J descriptors were closed!\n", 514 progname); 515 exit(2); 516 #endif 517 jp_0 = -1; 518 jp_1 = -1; 519 compatMake = TRUE; 520 } else { 521 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL); 522 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 523 } 524 break; 525 case 'N': 526 noExecute = TRUE; 527 noRecursiveExecute = TRUE; 528 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL); 529 break; 530 case 'S': 531 keepgoing = FALSE; 532 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL); 533 break; 534 case 'T': 535 if (argvalue == NULL) goto noarg; 536 tracefile = bmake_strdup(argvalue); 537 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL); 538 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 539 break; 540 case 'V': 541 case 'v': 542 if (argvalue == NULL) goto noarg; 543 printVars = c == 'v' ? EXPAND_VARS : COMPAT_VARS; 544 Lst_AppendS(variables, argvalue); 545 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL); 546 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 547 break; 548 case 'W': 549 parseWarnFatal = TRUE; 550 break; 551 case 'X': 552 varNoExportEnv = TRUE; 553 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL); 554 break; 555 case 'd': 556 if (argvalue == NULL) goto noarg; 557 /* If '-d-opts' don't pass to children */ 558 if (argvalue[0] == '-') 559 argvalue++; 560 else { 561 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL); 562 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 563 } 564 parse_debug_options(argvalue); 565 break; 566 case 'e': 567 checkEnvFirst = TRUE; 568 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL); 569 break; 570 case 'f': 571 if (argvalue == NULL) goto noarg; 572 Lst_AppendS(makefiles, argvalue); 573 break; 574 case 'i': 575 ignoreErrors = TRUE; 576 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL); 577 break; 578 case 'j': 579 if (argvalue == NULL) goto noarg; 580 forceJobs = TRUE; 581 maxJobs = strtol(argvalue, &p, 0); 582 if (*p != '\0' || maxJobs < 1) { 583 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n", 584 progname); 585 exit(1); 586 } 587 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 588 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 589 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL); 590 maxJobTokens = maxJobs; 591 break; 592 case 'k': 593 keepgoing = TRUE; 594 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL); 595 break; 596 case 'm': 597 if (argvalue == NULL) goto noarg; 598 /* look for magic parent directory search string */ 599 if (strncmp(".../", argvalue, 4) == 0) { 600 if (!Dir_FindHereOrAbove(curdir, argvalue+4, 601 found_path, sizeof(found_path))) 602 break; /* nothing doing */ 603 (void)Dir_AddDir(sysIncPath, found_path); 604 } else { 605 (void)Dir_AddDir(sysIncPath, argvalue); 606 } 607 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL); 608 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL); 609 break; 610 case 'n': 611 noExecute = TRUE; 612 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL); 613 break; 614 case 'q': 615 queryFlag = TRUE; 616 /* Kind of nonsensical, wot? */ 617 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL); 618 break; 619 case 'r': 620 noBuiltins = TRUE; 621 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL); 622 break; 623 case 's': 624 beSilent = TRUE; 625 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL); 626 break; 627 case 't': 628 touchFlag = TRUE; 629 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL); 630 break; 631 case 'w': 632 enterFlag = TRUE; 633 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL); 634 break; 635 case '-': 636 dashDash = TRUE; 637 break; 638 default: 639 case '?': 640 usage(); 641 } 642 argv += arginc; 643 argc -= arginc; 644 } 645 646 oldVars = TRUE; 647 648 /* 649 * See if the rest of the arguments are variable assignments and 650 * perform them if so. Else take them to be targets and stuff them 651 * on the end of the "create" list. 652 */ 653 for (; argc > 1; ++argv, --argc) 654 if (Parse_IsVar(argv[1])) { 655 Parse_DoVar(argv[1], VAR_CMD); 656 } else { 657 if (!*argv[1]) 658 Punt("illegal (null) argument."); 659 if (*argv[1] == '-' && !dashDash) 660 goto rearg; 661 Lst_AppendS(create, bmake_strdup(argv[1])); 662 } 663 664 return; 665 noarg: 666 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 667 progname, c); 668 usage(); 669 } 670 671 /*- 672 * Main_ParseArgLine -- 673 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target 674 * is encountered and by main() when reading the .MAKEFLAGS envariable. 675 * Takes a line of arguments and breaks it into its 676 * component words and passes those words and the number of them to the 677 * MainParseArgs function. 678 * The line should have all its leading whitespace removed. 679 * 680 * Input: 681 * line Line to fracture 682 * 683 * Results: 684 * None 685 * 686 * Side Effects: 687 * Only those that come from the various arguments. 688 */ 689 void 690 Main_ParseArgLine(const char *line) 691 { 692 char **argv; /* Manufactured argument vector */ 693 size_t argc; /* Number of arguments in argv */ 694 char *args; /* Space used by the args */ 695 char *p1; 696 const char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1); 697 char *buf; 698 699 if (line == NULL) 700 return; 701 for (; *line == ' '; ++line) 702 continue; 703 if (!*line) 704 return; 705 706 buf = str_concat3(argv0, " ", line); 707 free(p1); 708 709 argv = brk_string(buf, TRUE, &argc, &args); 710 if (argv == NULL) { 711 Error("Unterminated quoted string [%s]", buf); 712 free(buf); 713 return; 714 } 715 free(buf); 716 MainParseArgs((int)argc, argv); 717 718 free(args); 719 free(argv); 720 } 721 722 Boolean 723 Main_SetObjdir(const char *fmt, ...) 724 { 725 struct stat sb; 726 char *path; 727 char buf[MAXPATHLEN + 1]; 728 char buf2[MAXPATHLEN + 1]; 729 Boolean rc = FALSE; 730 va_list ap; 731 732 va_start(ap, fmt); 733 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 734 va_end(ap); 735 736 if (path[0] != '/') { 737 snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path); 738 path = buf2; 739 } 740 741 /* look for the directory and try to chdir there */ 742 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) { 743 if (chdir(path)) { 744 (void)fprintf(stderr, "make warning: %s: %s.\n", 745 path, strerror(errno)); 746 } else { 747 snprintf(objdir, sizeof objdir, "%s", path); 748 Var_Set(".OBJDIR", objdir, VAR_GLOBAL); 749 setenv("PWD", objdir, 1); 750 Dir_InitDot(); 751 purge_cached_realpaths(); 752 rc = TRUE; 753 if (enterFlag && strcmp(objdir, curdir) != 0) 754 enterFlagObj = TRUE; 755 } 756 } 757 758 return rc; 759 } 760 761 static Boolean 762 Main_SetVarObjdir(const char *var, const char *suffix) 763 { 764 char *path_freeIt; 765 const char *path = Var_Value(var, VAR_CMD, &path_freeIt); 766 const char *xpath; 767 char *xpath_freeIt; 768 769 if (path == NULL || path[0] == '\0') { 770 bmake_free(path_freeIt); 771 return FALSE; 772 } 773 774 /* expand variable substitutions */ 775 xpath = path; 776 xpath_freeIt = NULL; 777 if (strchr(path, '$') != 0) 778 xpath = xpath_freeIt = Var_Subst(path, VAR_GLOBAL, 779 VARE_WANTRES); 780 781 (void)Main_SetObjdir("%s%s", xpath, suffix); 782 783 bmake_free(xpath_freeIt); 784 bmake_free(path_freeIt); 785 return TRUE; 786 } 787 788 /*- 789 * ReadAllMakefiles -- 790 * wrapper around ReadMakefile() to read all. 791 * 792 * Results: 793 * TRUE if ok, FALSE on error 794 */ 795 static int 796 ReadAllMakefiles(const void *p, const void *q) 797 { 798 return ReadMakefile(p, q) == 0; 799 } 800 801 int 802 str2Lst_Append(Lst lp, char *str, const char *sep) 803 { 804 char *cp; 805 int n; 806 807 if (!sep) 808 sep = " \t"; 809 810 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) { 811 Lst_AppendS(lp, cp); 812 n++; 813 } 814 return n; 815 } 816 817 #ifdef SIGINFO 818 /*ARGSUSED*/ 819 static void 820 siginfo(int signo MAKE_ATTR_UNUSED) 821 { 822 char dir[MAXPATHLEN]; 823 char str[2 * MAXPATHLEN]; 824 int len; 825 if (getcwd(dir, sizeof(dir)) == NULL) 826 return; 827 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir); 828 if (len > 0) 829 (void)write(STDERR_FILENO, str, (size_t)len); 830 } 831 #endif 832 833 /* 834 * Allow makefiles some control over the mode we run in. 835 */ 836 void 837 MakeMode(const char *mode) 838 { 839 char *mp = NULL; 840 841 if (!mode) 842 mode = mp = Var_Subst("${" MAKE_MODE ":tl}", 843 VAR_GLOBAL, VARE_WANTRES); 844 845 if (mode && *mode) { 846 if (strstr(mode, "compat")) { 847 compatMake = TRUE; 848 forceJobs = FALSE; 849 } 850 #if USE_META 851 if (strstr(mode, "meta")) 852 meta_mode_init(mode); 853 #endif 854 } 855 856 free(mp); 857 } 858 859 static void 860 doPrintVars(void) 861 { 862 LstNode ln; 863 Boolean expandVars; 864 865 if (printVars == EXPAND_VARS) 866 expandVars = TRUE; 867 else if (debugVflag) 868 expandVars = FALSE; 869 else 870 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE); 871 872 for (ln = Lst_First(variables); ln != NULL; 873 ln = Lst_Succ(ln)) { 874 char *var = Lst_DatumS(ln); 875 const char *value; 876 char *p1; 877 878 if (strchr(var, '$')) { 879 value = p1 = Var_Subst(var, VAR_GLOBAL, VARE_WANTRES); 880 } else if (expandVars) { 881 char tmp[128]; 882 int len = snprintf(tmp, sizeof(tmp), "${%s}", var); 883 884 if (len >= (int)sizeof(tmp)) 885 Fatal("%s: variable name too big: %s", 886 progname, var); 887 value = p1 = Var_Subst(tmp, VAR_GLOBAL, VARE_WANTRES); 888 } else { 889 value = Var_Value(var, VAR_GLOBAL, &p1); 890 } 891 printf("%s\n", value ? value : ""); 892 bmake_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); 1067 Var_Set("MACHINE", machine, VAR_GLOBAL); 1068 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL); 1069 #ifdef MAKE_VERSION 1070 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL); 1071 #endif 1072 Var_Set(".newline", "\n", VAR_GLOBAL); /* 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); 1081 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL); 1082 1083 create = Lst_Init(); 1084 makefiles = Lst_Init(); 1085 printVars = 0; 1086 debugVflag = FALSE; 1087 variables = Lst_Init(); 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); 1136 Var_Set(".MAKE", p1, VAR_GLOBAL); 1137 Var_Set(MAKEFLAGS, "", VAR_GLOBAL); 1138 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL); 1139 Var_Set("MFLAGS", "", VAR_GLOBAL); 1140 Var_Set(".ALLTARGETS", "", VAR_GLOBAL); 1141 /* some makefiles need to know this */ 1142 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD); 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); 1155 snprintf(tmp, sizeof(tmp), "%u", myPid); 1156 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL); 1157 snprintf(tmp, sizeof(tmp), "%u", getppid()); 1158 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL); 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(); 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 bmake_free(ptmp1); 1236 bmake_free(ptmp2); 1237 } 1238 #endif 1239 Var_Set(".CURDIR", curdir, VAR_GLOBAL); 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_InitDir(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; ln = Lst_Succ(ln)) { 1283 char *name = Lst_DatumS(ln); 1284 Var_Append(".TARGETS", name, VAR_GLOBAL); 1285 } 1286 } else 1287 Var_Set(".TARGETS", "", VAR_GLOBAL); 1288 1289 1290 /* 1291 * If no user-supplied system path was given (through the -m option) 1292 * add the directories from the DEFSYSPATH (more than one may be given 1293 * as dir1:...:dirn) to the system include path. 1294 */ 1295 if (syspath == NULL || *syspath == '\0') 1296 syspath = defsyspath; 1297 else 1298 syspath = bmake_strdup(syspath); 1299 1300 for (start = syspath; *start != '\0'; start = cp) { 1301 for (cp = start; *cp != '\0' && *cp != ':'; cp++) 1302 continue; 1303 if (*cp == ':') { 1304 *cp++ = '\0'; 1305 } 1306 /* look for magic parent directory search string */ 1307 if (strncmp(".../", start, 4) != 0) { 1308 (void)Dir_AddDir(defIncPath, start); 1309 } else { 1310 if (Dir_FindHereOrAbove(curdir, start+4, 1311 found_path, sizeof(found_path))) { 1312 (void)Dir_AddDir(defIncPath, found_path); 1313 } 1314 } 1315 } 1316 if (syspath != defsyspath) 1317 free(syspath); 1318 1319 /* 1320 * Read in the built-in rules first, followed by the specified 1321 * makefile, if it was (makefile != NULL), or the default 1322 * makefile and Makefile, in that order, if it wasn't. 1323 */ 1324 if (!noBuiltins) { 1325 LstNode ln; 1326 1327 sysMkPath = Lst_Init(); 1328 Dir_Expand(_PATH_DEFSYSMK, 1329 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath, 1330 sysMkPath); 1331 if (Lst_IsEmpty(sysMkPath)) 1332 Fatal("%s: no system rules (%s).", progname, 1333 _PATH_DEFSYSMK); 1334 ln = Lst_Find(sysMkPath, ReadMakefile, NULL); 1335 if (ln == NULL) 1336 Fatal("%s: cannot open %s.", progname, 1337 (char *)Lst_DatumS(ln)); 1338 } 1339 1340 if (!Lst_IsEmpty(makefiles)) { 1341 LstNode ln; 1342 1343 ln = Lst_Find(makefiles, ReadAllMakefiles, NULL); 1344 if (ln != NULL) 1345 Fatal("%s: cannot open %s.", progname, 1346 (char *)Lst_DatumS(ln)); 1347 } else { 1348 p1 = Var_Subst("${" MAKEFILE_PREFERENCE "}", 1349 VAR_CMD, VARE_WANTRES); 1350 if (p1) { 1351 (void)str2Lst_Append(makefiles, p1, NULL); 1352 (void)Lst_Find(makefiles, ReadMakefile, NULL); 1353 free(p1); 1354 } 1355 } 1356 1357 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1358 if (!noBuiltins || !printVars) { 1359 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE:T}", 1360 VAR_CMD, VARE_WANTRES); 1361 doing_depend = TRUE; 1362 (void)ReadMakefile(makeDependfile, NULL); 1363 doing_depend = FALSE; 1364 } 1365 1366 if (enterFlagObj) 1367 printf("%s: Entering directory `%s'\n", progname, objdir); 1368 1369 MakeMode(NULL); 1370 1371 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL); 1372 bmake_free(p1); 1373 1374 if (!forceJobs && !compatMake && 1375 Var_Exists(".MAKE.JOBS", VAR_GLOBAL)) { 1376 char *value; 1377 int n; 1378 1379 value = Var_Subst("${.MAKE.JOBS}", VAR_GLOBAL, VARE_WANTRES); 1380 n = strtol(value, NULL, 0); 1381 if (n < 1) { 1382 (void)fprintf(stderr, "%s: illegal value for .MAKE.JOBS -- must be positive integer!\n", 1383 progname); 1384 exit(1); 1385 } 1386 if (n != maxJobs) { 1387 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL); 1388 Var_Append(MAKEFLAGS, value, VAR_GLOBAL); 1389 } 1390 maxJobs = n; 1391 maxJobTokens = maxJobs; 1392 forceJobs = TRUE; 1393 free(value); 1394 } 1395 1396 /* 1397 * Be compatible if user did not specify -j and did not explicitly 1398 * turned compatibility on 1399 */ 1400 if (!compatMake && !forceJobs) { 1401 compatMake = TRUE; 1402 } 1403 1404 if (!compatMake) 1405 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1406 if (DEBUG(JOB)) 1407 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1408 jp_0, jp_1, maxJobs, maxJobTokens, compatMake); 1409 1410 if (!printVars) 1411 Main_ExportMAKEFLAGS(TRUE); /* initial export */ 1412 1413 1414 /* 1415 * For compatibility, look at the directories in the VPATH variable 1416 * and add them to the search path, if the variable is defined. The 1417 * variable's value is in the same format as the PATH envariable, i.e. 1418 * <directory>:<directory>:<directory>... 1419 */ 1420 if (Var_Exists("VPATH", VAR_CMD)) { 1421 char *vpath, savec; 1422 /* 1423 * GCC stores string constants in read-only memory, but 1424 * Var_Subst will want to write this thing, so store it 1425 * in an array 1426 */ 1427 static char VPATH[] = "${VPATH}"; 1428 1429 vpath = Var_Subst(VPATH, VAR_CMD, VARE_WANTRES); 1430 path = vpath; 1431 do { 1432 /* skip to end of directory */ 1433 for (cp = path; *cp != ':' && *cp != '\0'; cp++) 1434 continue; 1435 /* Save terminator character so know when to stop */ 1436 savec = *cp; 1437 *cp = '\0'; 1438 /* Add directory to search path */ 1439 (void)Dir_AddDir(dirSearchPath, path); 1440 *cp = savec; 1441 path = cp + 1; 1442 } while (savec == ':'); 1443 free(vpath); 1444 } 1445 1446 /* 1447 * Now that all search paths have been read for suffixes et al, it's 1448 * time to add the default search path to their lists... 1449 */ 1450 Suff_DoPaths(); 1451 1452 /* 1453 * Propagate attributes through :: dependency lists. 1454 */ 1455 Targ_Propagate(); 1456 1457 /* print the initial graph, if the user requested it */ 1458 if (DEBUG(GRAPH1)) 1459 Targ_PrintGraph(1); 1460 1461 /* print the values of any variables requested by the user */ 1462 if (printVars) { 1463 doPrintVars(); 1464 outOfDate = FALSE; 1465 } else { 1466 outOfDate = runTargets(); 1467 } 1468 1469 #ifdef CLEANUP 1470 Lst_Destroy(variables, NULL); 1471 Lst_Destroy(makefiles, NULL); 1472 Lst_Destroy(create, (FreeProc *)free); 1473 #endif 1474 1475 /* print the graph now it's been processed if the user requested it */ 1476 if (DEBUG(GRAPH2)) 1477 Targ_PrintGraph(2); 1478 1479 Trace_Log(MAKEEND, 0); 1480 1481 if (enterFlagObj) 1482 printf("%s: Leaving directory `%s'\n", progname, objdir); 1483 if (enterFlag) 1484 printf("%s: Leaving directory `%s'\n", progname, curdir); 1485 1486 #ifdef USE_META 1487 meta_finish(); 1488 #endif 1489 Suff_End(); 1490 Targ_End(); 1491 Arch_End(); 1492 Var_End(); 1493 Parse_End(); 1494 Dir_End(); 1495 Job_End(); 1496 Trace_End(); 1497 1498 return outOfDate ? 1 : 0; 1499 } 1500 1501 /*- 1502 * ReadMakefile -- 1503 * Open and parse the given makefile. 1504 * 1505 * Results: 1506 * 0 if ok. -1 if couldn't open file. 1507 * 1508 * Side Effects: 1509 * lots 1510 */ 1511 static int 1512 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED) 1513 { 1514 const char *fname = p; /* makefile to read */ 1515 int fd; 1516 char *name, *path = NULL; 1517 1518 if (!strcmp(fname, "-")) { 1519 Parse_File(NULL /*stdin*/, -1); 1520 Var_Set("MAKEFILE", "", VAR_INTERNAL); 1521 } else { 1522 /* if we've chdir'd, rebuild the path name */ 1523 if (strcmp(curdir, objdir) && *fname != '/') { 1524 path = str_concat3(curdir, "/", fname); 1525 fd = open(path, O_RDONLY); 1526 if (fd != -1) { 1527 fname = path; 1528 goto found; 1529 } 1530 free(path); 1531 1532 /* If curdir failed, try objdir (ala .depend) */ 1533 path = str_concat3(objdir, "/", fname); 1534 fd = open(path, O_RDONLY); 1535 if (fd != -1) { 1536 fname = path; 1537 goto found; 1538 } 1539 } else { 1540 fd = open(fname, O_RDONLY); 1541 if (fd != -1) 1542 goto found; 1543 } 1544 /* look in -I and system include directories. */ 1545 name = Dir_FindFile(fname, parseIncPath); 1546 if (!name) 1547 name = Dir_FindFile(fname, 1548 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath); 1549 if (!name || (fd = open(name, O_RDONLY)) == -1) { 1550 free(name); 1551 free(path); 1552 return -1; 1553 } 1554 fname = name; 1555 /* 1556 * set the MAKEFILE variable desired by System V fans -- the 1557 * placement of the setting here means it gets set to the last 1558 * makefile specified, as it is set by SysV make. 1559 */ 1560 found: 1561 if (!doing_depend) 1562 Var_Set("MAKEFILE", fname, VAR_INTERNAL); 1563 Parse_File(fname, fd); 1564 } 1565 free(path); 1566 return 0; 1567 } 1568 1569 1570 1571 /*- 1572 * Cmd_Exec -- 1573 * Execute the command in cmd, and return the output of that command 1574 * in a string. In the output, newlines are replaced with spaces. 1575 * 1576 * Results: 1577 * A string containing the output of the command, or the empty string. 1578 * *errfmt returns a format string describing the command failure, 1579 * if any, using a single %s conversion specification. 1580 * 1581 * Side Effects: 1582 * The string must be freed by the caller. 1583 */ 1584 char * 1585 Cmd_Exec(const char *cmd, const char **errfmt) 1586 { 1587 const char *args[4]; /* Args for invoking the shell */ 1588 int fds[2]; /* Pipe streams */ 1589 int cpid; /* Child PID */ 1590 int pid; /* PID from wait() */ 1591 int status; /* command exit status */ 1592 Buffer buf; /* buffer to store the result */ 1593 ssize_t bytes_read; 1594 char *res; /* result */ 1595 size_t res_len; 1596 char *cp; 1597 int savederr; /* saved errno */ 1598 1599 *errfmt = NULL; 1600 1601 if (!shellName) 1602 Shell_Init(); 1603 /* 1604 * Set up arguments for shell 1605 */ 1606 args[0] = shellName; 1607 args[1] = "-c"; 1608 args[2] = cmd; 1609 args[3] = NULL; 1610 1611 /* 1612 * Open a pipe for fetching its output 1613 */ 1614 if (pipe(fds) == -1) { 1615 *errfmt = "Couldn't create pipe for \"%s\""; 1616 goto bad; 1617 } 1618 1619 /* 1620 * Fork 1621 */ 1622 switch (cpid = vFork()) { 1623 case 0: 1624 /* 1625 * Close input side of pipe 1626 */ 1627 (void)close(fds[0]); 1628 1629 /* 1630 * Duplicate the output stream to the shell's output, then 1631 * shut the extra thing down. Note we don't fetch the error 1632 * stream...why not? Why? 1633 */ 1634 (void)dup2(fds[1], 1); 1635 (void)close(fds[1]); 1636 1637 Var_ExportVars(); 1638 1639 (void)execv(shellPath, UNCONST(args)); 1640 _exit(1); 1641 /*NOTREACHED*/ 1642 1643 case -1: 1644 *errfmt = "Couldn't exec \"%s\""; 1645 goto bad; 1646 1647 default: 1648 /* 1649 * No need for the writing half 1650 */ 1651 (void)close(fds[1]); 1652 1653 savederr = 0; 1654 Buf_Init(&buf, 0); 1655 1656 do { 1657 char result[BUFSIZ]; 1658 bytes_read = read(fds[0], result, sizeof(result)); 1659 if (bytes_read > 0) 1660 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1661 } 1662 while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1663 if (bytes_read == -1) 1664 savederr = errno; 1665 1666 /* 1667 * Close the input side of the pipe. 1668 */ 1669 (void)close(fds[0]); 1670 1671 /* 1672 * Wait for the process to exit. 1673 */ 1674 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) { 1675 JobReapChild(pid, status, FALSE); 1676 continue; 1677 } 1678 res_len = Buf_Size(&buf); 1679 res = Buf_Destroy(&buf, FALSE); 1680 1681 if (savederr != 0) 1682 *errfmt = "Couldn't read shell's output for \"%s\""; 1683 1684 if (WIFSIGNALED(status)) 1685 *errfmt = "\"%s\" exited on a signal"; 1686 else if (WEXITSTATUS(status) != 0) 1687 *errfmt = "\"%s\" returned non-zero status"; 1688 1689 /* Convert newlines to spaces. A final newline is just stripped */ 1690 if (res_len > 0 && res[res_len - 1] == '\n') 1691 res[res_len - 1] = '\0'; 1692 for (cp = res; *cp != '\0'; cp++) 1693 if (*cp == '\n') 1694 *cp = ' '; 1695 break; 1696 } 1697 return res; 1698 bad: 1699 return bmake_strdup(""); 1700 } 1701 1702 /*- 1703 * Error -- 1704 * Print an error message given its format. 1705 * 1706 * Results: 1707 * None. 1708 * 1709 * Side Effects: 1710 * The message is printed. 1711 */ 1712 /* VARARGS */ 1713 void 1714 Error(const char *fmt, ...) 1715 { 1716 va_list ap; 1717 FILE *err_file; 1718 1719 err_file = debug_file; 1720 if (err_file == stdout) 1721 err_file = stderr; 1722 (void)fflush(stdout); 1723 for (;;) { 1724 va_start(ap, fmt); 1725 fprintf(err_file, "%s: ", progname); 1726 (void)vfprintf(err_file, fmt, ap); 1727 va_end(ap); 1728 (void)fprintf(err_file, "\n"); 1729 (void)fflush(err_file); 1730 if (err_file == stderr) 1731 break; 1732 err_file = stderr; 1733 } 1734 } 1735 1736 /*- 1737 * Fatal -- 1738 * Produce a Fatal error message. If jobs are running, waits for them 1739 * to finish. 1740 * 1741 * Results: 1742 * None 1743 * 1744 * Side Effects: 1745 * The program exits 1746 */ 1747 /* VARARGS */ 1748 void 1749 Fatal(const char *fmt, ...) 1750 { 1751 va_list ap; 1752 1753 va_start(ap, fmt); 1754 if (jobsRunning) 1755 Job_Wait(); 1756 1757 (void)fflush(stdout); 1758 (void)vfprintf(stderr, fmt, ap); 1759 va_end(ap); 1760 (void)fprintf(stderr, "\n"); 1761 (void)fflush(stderr); 1762 1763 PrintOnError(NULL, NULL); 1764 1765 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1766 Targ_PrintGraph(2); 1767 Trace_Log(MAKEERROR, 0); 1768 exit(2); /* Not 1 so -q can distinguish error */ 1769 } 1770 1771 /* 1772 * Punt -- 1773 * Major exception once jobs are being created. Kills all jobs, prints 1774 * a message and exits. 1775 * 1776 * Results: 1777 * None 1778 * 1779 * Side Effects: 1780 * All children are killed indiscriminately and the program Lib_Exits 1781 */ 1782 /* VARARGS */ 1783 void 1784 Punt(const char *fmt, ...) 1785 { 1786 va_list ap; 1787 1788 va_start(ap, fmt); 1789 (void)fflush(stdout); 1790 (void)fprintf(stderr, "%s: ", progname); 1791 (void)vfprintf(stderr, fmt, ap); 1792 va_end(ap); 1793 (void)fprintf(stderr, "\n"); 1794 (void)fflush(stderr); 1795 1796 PrintOnError(NULL, NULL); 1797 1798 DieHorribly(); 1799 } 1800 1801 /*- 1802 * DieHorribly -- 1803 * Exit without giving a message. 1804 * 1805 * Results: 1806 * None 1807 * 1808 * Side Effects: 1809 * A big one... 1810 */ 1811 void 1812 DieHorribly(void) 1813 { 1814 if (jobsRunning) 1815 Job_AbortAll(); 1816 if (DEBUG(GRAPH2)) 1817 Targ_PrintGraph(2); 1818 Trace_Log(MAKEERROR, 0); 1819 exit(2); /* Not 1, so -q can distinguish error */ 1820 } 1821 1822 /* 1823 * Finish -- 1824 * Called when aborting due to errors in child shell to signal 1825 * abnormal exit. 1826 * 1827 * Results: 1828 * None 1829 * 1830 * Side Effects: 1831 * The program exits 1832 */ 1833 void 1834 Finish(int errors) 1835 /* number of errors encountered in Make_Make */ 1836 { 1837 if (dieQuietly(NULL, -1)) 1838 exit(2); 1839 Fatal("%d error%s", errors, errors == 1 ? "" : "s"); 1840 } 1841 1842 /* 1843 * eunlink -- 1844 * Remove a file carefully, avoiding directories. 1845 */ 1846 int 1847 eunlink(const char *file) 1848 { 1849 struct stat st; 1850 1851 if (lstat(file, &st) == -1) 1852 return -1; 1853 1854 if (S_ISDIR(st.st_mode)) { 1855 errno = EISDIR; 1856 return -1; 1857 } 1858 return unlink(file); 1859 } 1860 1861 /* 1862 * execError -- 1863 * Print why exec failed, avoiding stdio. 1864 */ 1865 void 1866 execError(const char *af, const char *av) 1867 { 1868 #ifdef USE_IOVEC 1869 int i = 0; 1870 struct iovec iov[8]; 1871 #define IOADD(s) \ 1872 (void)(iov[i].iov_base = UNCONST(s), \ 1873 iov[i].iov_len = strlen(iov[i].iov_base), \ 1874 i++) 1875 #else 1876 #define IOADD(void)write(2, s, strlen(s)) 1877 #endif 1878 1879 IOADD(progname); 1880 IOADD(": "); 1881 IOADD(af); 1882 IOADD("("); 1883 IOADD(av); 1884 IOADD(") failed ("); 1885 IOADD(strerror(errno)); 1886 IOADD(")\n"); 1887 1888 #ifdef USE_IOVEC 1889 while (writev(2, iov, 8) == -1 && errno == EAGAIN) 1890 continue; 1891 #endif 1892 } 1893 1894 /* 1895 * usage -- 1896 * exit with usage message 1897 */ 1898 static void 1899 usage(void) 1900 { 1901 char *p; 1902 if ((p = strchr(progname, '[')) != NULL) 1903 *p = '\0'; 1904 1905 (void)fprintf(stderr, 1906 "usage: %s [-BeikNnqrstWwX] \n" 1907 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 1908 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 1909 " [-V variable] [-v variable] [variable=value] [target ...]\n", 1910 progname); 1911 exit(2); 1912 } 1913 1914 /* 1915 * realpath(3) can get expensive, cache results... 1916 */ 1917 static GNode *cached_realpaths = NULL; 1918 1919 static GNode * 1920 get_cached_realpaths(void) 1921 { 1922 1923 if (!cached_realpaths) { 1924 cached_realpaths = Targ_NewGN("Realpath"); 1925 #ifndef DEBUG_REALPATH_CACHE 1926 cached_realpaths->flags = INTERNAL; 1927 #endif 1928 } 1929 1930 return cached_realpaths; 1931 } 1932 1933 /* purge any relative paths */ 1934 static void 1935 purge_cached_realpaths(void) 1936 { 1937 GNode *cache = get_cached_realpaths(); 1938 Hash_Entry *he, *nhe; 1939 Hash_Search hs; 1940 1941 he = Hash_EnumFirst(&cache->context, &hs); 1942 while (he) { 1943 nhe = Hash_EnumNext(&hs); 1944 if (he->name[0] != '/') { 1945 if (DEBUG(DIR)) 1946 fprintf(stderr, "cached_realpath: purging %s\n", he->name); 1947 Hash_DeleteEntry(&cache->context, he); 1948 } 1949 he = nhe; 1950 } 1951 } 1952 1953 char * 1954 cached_realpath(const char *pathname, char *resolved) 1955 { 1956 GNode *cache; 1957 const char *rp; 1958 char *cp; 1959 1960 if (!pathname || !pathname[0]) 1961 return NULL; 1962 1963 cache = get_cached_realpaths(); 1964 1965 if ((rp = Var_Value(pathname, cache, &cp)) != NULL) { 1966 /* a hit */ 1967 strncpy(resolved, rp, MAXPATHLEN); 1968 resolved[MAXPATHLEN - 1] = '\0'; 1969 } else if ((rp = realpath(pathname, resolved)) != NULL) { 1970 Var_Set(pathname, rp, cache); 1971 } /* else should we negative-cache? */ 1972 1973 bmake_free(cp); 1974 return rp ? resolved : NULL; 1975 } 1976 1977 int 1978 PrintAddr(void *a, void *b) 1979 { 1980 printf("%lx ", (unsigned long) a); 1981 return b ? 0 : 0; 1982 } 1983 1984 1985 static int 1986 addErrorCMD(void *cmdp, void *gnp) 1987 { 1988 if (cmdp == NULL) 1989 return 1; /* stop */ 1990 Var_Append(".ERROR_CMD", cmdp, VAR_GLOBAL); 1991 return 0; 1992 } 1993 1994 /* 1995 * Return true if we should die without noise. 1996 * For example our failing child was a sub-make 1997 * or failure happend elsewhere. 1998 */ 1999 int 2000 dieQuietly(GNode *gn, int bf) 2001 { 2002 static int quietly = -1; 2003 2004 if (quietly < 0) { 2005 if (DEBUG(JOB) || getBoolean(".MAKE.DIE_QUIETLY", 1) == 0) 2006 quietly = 0; 2007 else if (bf >= 0) 2008 quietly = bf; 2009 else 2010 quietly = (gn) ? ((gn->type & (OP_MAKE)) != 0) : 0; 2011 } 2012 return quietly; 2013 } 2014 2015 void 2016 PrintOnError(GNode *gn, const char *s) 2017 { 2018 static GNode *en = NULL; 2019 const char *expr; 2020 char *cp; 2021 2022 if (DEBUG(HASH)) { 2023 Targ_Stats(); 2024 Var_Stats(); 2025 } 2026 2027 /* we generally want to keep quiet if a sub-make died */ 2028 if (dieQuietly(gn, -1)) 2029 return; 2030 2031 if (s) 2032 printf("%s", s); 2033 2034 printf("\n%s: stopped in %s\n", progname, curdir); 2035 2036 if (en) 2037 return; /* we've been here! */ 2038 if (gn) { 2039 /* 2040 * We can print this even if there is no .ERROR target. 2041 */ 2042 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL); 2043 Var_Delete(".ERROR_CMD", VAR_GLOBAL); 2044 Lst_ForEach(gn->commands, addErrorCMD, gn); 2045 } 2046 expr = "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}"; 2047 cp = Var_Subst(expr, VAR_GLOBAL, VARE_WANTRES); 2048 if (cp) { 2049 if (*cp) 2050 printf("%s", cp); 2051 free(cp); 2052 } 2053 fflush(stdout); 2054 2055 /* 2056 * Finally, see if there is a .ERROR target, and run it if so. 2057 */ 2058 en = Targ_FindNode(".ERROR", TARG_NOCREATE); 2059 if (en) { 2060 en->type |= OP_SPECIAL; 2061 Compat_Make(en, en); 2062 } 2063 } 2064 2065 void 2066 Main_ExportMAKEFLAGS(Boolean first) 2067 { 2068 static int once = 1; 2069 const char *expr; 2070 char *s; 2071 2072 if (once != first) 2073 return; 2074 once = 0; 2075 2076 expr = "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}"; 2077 s = Var_Subst(expr, VAR_CMD, VARE_WANTRES); 2078 if (s != NULL && s[0] != '\0') { 2079 #ifdef POSIX 2080 setenv("MAKEFLAGS", s, 1); 2081 #else 2082 setenv("MAKE", s, 1); 2083 #endif 2084 } 2085 } 2086 2087 char * 2088 getTmpdir(void) 2089 { 2090 static char *tmpdir = NULL; 2091 2092 if (!tmpdir) { 2093 struct stat st; 2094 2095 /* 2096 * Honor $TMPDIR but only if it is valid. 2097 * Ensure it ends with /. 2098 */ 2099 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 2100 VARE_WANTRES); 2101 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2102 free(tmpdir); 2103 tmpdir = bmake_strdup(_PATH_TMP); 2104 } 2105 } 2106 return tmpdir; 2107 } 2108 2109 /* 2110 * Create and open a temp file using "pattern". 2111 * If "fnamep" is provided set it to a copy of the filename created. 2112 * Otherwise unlink the file once open. 2113 */ 2114 int 2115 mkTempFile(const char *pattern, char **fnamep) 2116 { 2117 static char *tmpdir = NULL; 2118 char tfile[MAXPATHLEN]; 2119 int fd; 2120 2121 if (!pattern) 2122 pattern = TMPPAT; 2123 if (!tmpdir) 2124 tmpdir = getTmpdir(); 2125 if (pattern[0] == '/') { 2126 snprintf(tfile, sizeof(tfile), "%s", pattern); 2127 } else { 2128 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern); 2129 } 2130 if ((fd = mkstemp(tfile)) < 0) 2131 Punt("Could not create temporary file %s: %s", tfile, strerror(errno)); 2132 if (fnamep) { 2133 *fnamep = bmake_strdup(tfile); 2134 } else { 2135 unlink(tfile); /* we just want the descriptor */ 2136 } 2137 return fd; 2138 } 2139 2140 /* 2141 * Convert a string representation of a boolean. 2142 * Anything that looks like "No", "False", "Off", "0" etc, 2143 * is FALSE, otherwise TRUE. 2144 */ 2145 Boolean 2146 s2Boolean(const char *s, Boolean bf) 2147 { 2148 if (s) { 2149 switch(*s) { 2150 case '\0': /* not set - the default wins */ 2151 break; 2152 case '0': 2153 case 'F': 2154 case 'f': 2155 case 'N': 2156 case 'n': 2157 bf = FALSE; 2158 break; 2159 case 'O': 2160 case 'o': 2161 switch (s[1]) { 2162 case 'F': 2163 case 'f': 2164 bf = FALSE; 2165 break; 2166 default: 2167 bf = TRUE; 2168 break; 2169 } 2170 break; 2171 default: 2172 bf = TRUE; 2173 break; 2174 } 2175 } 2176 return bf; 2177 } 2178 2179 /* 2180 * Return a Boolean based on setting of a knob. 2181 * 2182 * If the knob is not set, the supplied default is the return value. 2183 * If set, anything that looks or smells like "No", "False", "Off", "0" etc, 2184 * is FALSE, otherwise TRUE. 2185 */ 2186 Boolean 2187 getBoolean(const char *name, Boolean bf) 2188 { 2189 char tmp[64]; 2190 char *cp; 2191 2192 if (snprintf(tmp, sizeof(tmp), "${%s:U:tl}", name) < (int)(sizeof(tmp))) { 2193 cp = Var_Subst(tmp, VAR_GLOBAL, VARE_WANTRES); 2194 2195 if (cp) { 2196 bf = s2Boolean(cp, bf); 2197 free(cp); 2198 } 2199 } 2200 return bf; 2201 } 2202
Indexes created Wed Sep 24 05:09:52 GMT 2025