1 /* $NetBSD: main.c,v 1.612 2024/03/10 02:53:37 sjg 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 /* 72 * The main file for this entire program. Exit routines etc. reside here. 73 * 74 * Utility functions defined in this file: 75 * 76 * Main_ParseArgLine 77 * Parse and process command line arguments from a 78 * single string. Used to implement the special targets 79 * .MFLAGS and .MAKEFLAGS. 80 * 81 * Error Print a tagged error message. 82 * 83 * Fatal Print an error message and exit. 84 * 85 * Punt Abort all jobs and exit with a message. 86 * 87 * Finish Finish things up by printing the number of errors 88 * that occurred, and exit. 89 */ 90 91 #include <sys/types.h> 92 #include <sys/time.h> 93 #include <sys/param.h> 94 #include <sys/resource.h> 95 #include <sys/stat.h> 96 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) 97 #include <sys/sysctl.h> 98 #endif 99 #include <sys/utsname.h> 100 #include "wait.h" 101 102 #include <errno.h> 103 #include <signal.h> 104 #include <stdarg.h> 105 #include <time.h> 106 107 #include "make.h" 108 #include "dir.h" 109 #include "job.h" 110 #include "pathnames.h" 111 #include "trace.h" 112 113 /* "@(#)main.c 8.3 (Berkeley) 3/19/94" */ 114 MAKE_RCSID("$NetBSD: main.c,v 1.612 2024/03/10 02:53:37 sjg Exp $"); 115 #if defined(MAKE_NATIVE) 116 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993 " 117 "The Regents of the University of California. " 118 "All rights reserved."); 119 #endif 120 121 #ifndef __arraycount 122 # define __arraycount(__x) (sizeof(__x) / sizeof(__x[0])) 123 #endif 124 125 CmdOpts opts; 126 time_t now; /* Time at start of make */ 127 GNode *defaultNode; /* .DEFAULT node */ 128 bool allPrecious; /* .PRECIOUS given on a line by itself */ 129 bool deleteOnError; /* .DELETE_ON_ERROR: set */ 130 131 static int maxJobTokens; /* -j argument */ 132 static bool enterFlagObj; /* -w and objdir != srcdir */ 133 134 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */ 135 bool doing_depend; /* Set while reading .depend */ 136 static bool jobsRunning; /* true if the jobs might be running */ 137 static const char *tracefile; 138 static bool ReadMakefile(const char *); 139 static void purge_relative_cached_realpaths(void); 140 141 static bool ignorePWD; /* if we use -C, PWD is meaningless */ 142 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */ 143 char curdir[MAXPATHLEN + 1]; /* Startup directory */ 144 const char *progname; 145 char *makeDependfile; 146 pid_t myPid; 147 int makelevel; 148 149 bool forceJobs = false; 150 static int main_errors = 0; 151 static HashTable cached_realpaths; 152 153 /* 154 * For compatibility with the POSIX version of MAKEFLAGS that includes 155 * all the options without '-', convert 'flags' to '-f -l -a -g -s '. 156 */ 157 static char * 158 explode(const char *flags) 159 { 160 char *exploded, *ep; 161 const char *p; 162 163 if (flags == NULL) 164 return NULL; 165 166 for (p = flags; *p != '\0'; p++) 167 if (!ch_isalpha(*p)) 168 return bmake_strdup(flags); 169 170 exploded = bmake_malloc((size_t)(p - flags) * 3 + 1); 171 for (p = flags, ep = exploded; *p != '\0'; p++) { 172 *ep++ = '-'; 173 *ep++ = *p; 174 *ep++ = ' '; 175 } 176 *ep = '\0'; 177 return exploded; 178 } 179 180 MAKE_ATTR_DEAD static void 181 usage(void) 182 { 183 size_t prognameLen = strcspn(progname, "["); 184 185 (void)fprintf(stderr, 186 "usage: %.*s [-BeikNnqrSstWwX]\n" 187 " [-C directory] [-D variable] [-d flags] [-f makefile]\n" 188 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n" 189 " [-V variable] [-v variable] [variable=value] [target ...]\n", 190 (int)prognameLen, progname); 191 exit(2); 192 } 193 194 static void 195 MainParseArgDebugFile(const char *arg) 196 { 197 const char *mode; 198 size_t len; 199 char *fname; 200 201 if (opts.debug_file != stdout && opts.debug_file != stderr) 202 fclose(opts.debug_file); 203 204 if (*arg == '+') { 205 arg++; 206 mode = "a"; 207 } else 208 mode = "w"; 209 210 if (strcmp(arg, "stdout") == 0) { 211 opts.debug_file = stdout; 212 return; 213 } 214 if (strcmp(arg, "stderr") == 0) { 215 opts.debug_file = stderr; 216 return; 217 } 218 219 len = strlen(arg); 220 fname = bmake_malloc(len + 20); 221 memcpy(fname, arg, len + 1); 222 223 /* Replace the trailing '%d' after '.%d' with the pid. */ 224 if (len >= 3 && memcmp(fname + len - 3, ".%d", 3) == 0) 225 snprintf(fname + len - 2, 20, "%d", getpid()); 226 227 opts.debug_file = fopen(fname, mode); 228 if (opts.debug_file == NULL) { 229 fprintf(stderr, "Cannot open debug file \"%s\"\n", fname); 230 exit(2); 231 } 232 free(fname); 233 } 234 235 static void 236 MainParseArgDebug(const char *argvalue) 237 { 238 const char *modules; 239 DebugFlags debug = opts.debug; 240 241 for (modules = argvalue; *modules != '\0'; modules++) { 242 switch (*modules) { 243 case '0': /* undocumented, only intended for tests */ 244 memset(&debug, 0, sizeof(debug)); 245 break; 246 case 'A': 247 memset(&debug, ~0, sizeof(debug)); 248 break; 249 case 'a': 250 debug.DEBUG_ARCH = true; 251 break; 252 case 'C': 253 debug.DEBUG_CWD = true; 254 break; 255 case 'c': 256 debug.DEBUG_COND = true; 257 break; 258 case 'd': 259 debug.DEBUG_DIR = true; 260 break; 261 case 'e': 262 debug.DEBUG_ERROR = true; 263 break; 264 case 'f': 265 debug.DEBUG_FOR = true; 266 break; 267 case 'g': 268 if (modules[1] == '1') { 269 debug.DEBUG_GRAPH1 = true; 270 modules++; 271 } else if (modules[1] == '2') { 272 debug.DEBUG_GRAPH2 = true; 273 modules++; 274 } else if (modules[1] == '3') { 275 debug.DEBUG_GRAPH3 = true; 276 modules++; 277 } 278 break; 279 case 'h': 280 debug.DEBUG_HASH = true; 281 break; 282 case 'j': 283 debug.DEBUG_JOB = true; 284 break; 285 case 'L': 286 opts.strict = true; 287 break; 288 case 'l': 289 debug.DEBUG_LOUD = true; 290 break; 291 case 'M': 292 debug.DEBUG_META = true; 293 break; 294 case 'm': 295 debug.DEBUG_MAKE = true; 296 break; 297 case 'n': 298 debug.DEBUG_SCRIPT = true; 299 break; 300 case 'p': 301 debug.DEBUG_PARSE = true; 302 break; 303 case 's': 304 debug.DEBUG_SUFF = true; 305 break; 306 case 't': 307 debug.DEBUG_TARG = true; 308 break; 309 case 'V': 310 opts.debugVflag = true; 311 break; 312 case 'v': 313 debug.DEBUG_VAR = true; 314 break; 315 case 'x': 316 debug.DEBUG_SHELL = true; 317 break; 318 case 'F': 319 MainParseArgDebugFile(modules + 1); 320 goto finish; 321 default: 322 (void)fprintf(stderr, 323 "%s: illegal argument to d option -- %c\n", 324 progname, *modules); 325 usage(); 326 } 327 } 328 329 finish: 330 opts.debug = debug; 331 332 setvbuf(opts.debug_file, NULL, _IONBF, 0); 333 if (opts.debug_file != stdout) 334 setvbuf(stdout, NULL, _IOLBF, 0); 335 } 336 337 /* Is path relative or does it contain any relative component "." or ".."? */ 338 static bool 339 IsRelativePath(const char *path) 340 { 341 const char *p; 342 343 if (path[0] != '/') 344 return true; 345 p = path; 346 while ((p = strstr(p, "/.")) != NULL) { 347 p += 2; 348 if (*p == '.') 349 p++; 350 if (*p == '/' || *p == '\0') 351 return true; 352 } 353 return false; 354 } 355 356 static void 357 MainParseArgChdir(const char *argvalue) 358 { 359 struct stat sa, sb; 360 361 if (chdir(argvalue) == -1) { 362 (void)fprintf(stderr, "%s: chdir %s: %s\n", 363 progname, argvalue, strerror(errno)); 364 exit(2); /* Not 1 so -q can distinguish error */ 365 } 366 if (getcwd(curdir, MAXPATHLEN) == NULL) { 367 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno)); 368 exit(2); 369 } 370 if (!IsRelativePath(argvalue) && 371 stat(argvalue, &sa) != -1 && 372 stat(curdir, &sb) != -1 && 373 sa.st_ino == sb.st_ino && 374 sa.st_dev == sb.st_dev) 375 strncpy(curdir, argvalue, MAXPATHLEN); 376 ignorePWD = true; 377 } 378 379 static void 380 MainParseArgJobsInternal(const char *argvalue) 381 { 382 char end; 383 if (sscanf(argvalue, "%d,%d%c", &jp_0, &jp_1, &end) != 2) { 384 (void)fprintf(stderr, 385 "%s: internal error -- J option malformed (%s)\n", 386 progname, argvalue); 387 usage(); 388 } 389 if ((fcntl(jp_0, F_GETFD, 0) < 0) || 390 (fcntl(jp_1, F_GETFD, 0) < 0)) { 391 jp_0 = -1; 392 jp_1 = -1; 393 opts.compatMake = true; 394 } else { 395 Global_Append(MAKEFLAGS, "-J"); 396 Global_Append(MAKEFLAGS, argvalue); 397 } 398 } 399 400 static void 401 MainParseArgJobs(const char *arg) 402 { 403 const char *p; 404 char *end; 405 char v[12]; 406 407 forceJobs = true; 408 opts.maxJobs = (int)strtol(arg, &end, 0); 409 p = end; 410 #ifdef _SC_NPROCESSORS_ONLN 411 if (*p != '\0') { 412 double d; 413 414 if (*p == 'C') 415 d = (opts.maxJobs > 0) ? opts.maxJobs : 1; 416 else if (*p == '.') { 417 d = strtod(arg, &end); 418 p = end; 419 } else 420 d = 0.0; 421 if (d > 0.0) { 422 p = ""; 423 opts.maxJobs = (int)sysconf(_SC_NPROCESSORS_ONLN); 424 opts.maxJobs = (int)(d * (double)opts.maxJobs); 425 } 426 } 427 #endif 428 if (*p != '\0' || opts.maxJobs < 1) { 429 (void)fprintf(stderr, 430 "%s: argument '%s' to option '-j' " 431 "must be a positive number\n", 432 progname, arg); 433 exit(2); /* Not 1 so -q can distinguish error */ 434 } 435 snprintf(v, sizeof(v), "%d", opts.maxJobs); 436 Global_Append(MAKEFLAGS, "-j"); 437 Global_Append(MAKEFLAGS, v); 438 Global_Set(".MAKE.JOBS", v); 439 maxJobTokens = opts.maxJobs; 440 } 441 442 static void 443 MainParseArgSysInc(const char *argvalue) 444 { 445 if (strncmp(argvalue, ".../", 4) == 0) { 446 char *found_path = Dir_FindHereOrAbove(curdir, argvalue + 4); 447 if (found_path == NULL) 448 return; 449 (void)SearchPath_Add(sysIncPath, found_path); 450 free(found_path); 451 } else { 452 (void)SearchPath_Add(sysIncPath, argvalue); 453 } 454 Global_Append(MAKEFLAGS, "-m"); 455 Global_Append(MAKEFLAGS, argvalue); 456 Dir_SetSYSPATH(); 457 } 458 459 static bool 460 MainParseOption(char c, const char *argvalue) 461 { 462 switch (c) { 463 case '\0': 464 break; 465 case 'B': 466 opts.compatMake = true; 467 Global_Append(MAKEFLAGS, "-B"); 468 Global_Set(".MAKE.MODE", "compat"); 469 break; 470 case 'C': 471 MainParseArgChdir(argvalue); 472 break; 473 case 'D': 474 if (argvalue[0] == '\0') 475 return false; 476 Var_SetExpand(SCOPE_GLOBAL, argvalue, "1"); 477 Global_Append(MAKEFLAGS, "-D"); 478 Global_Append(MAKEFLAGS, argvalue); 479 break; 480 case 'I': 481 SearchPath_Add(parseIncPath, argvalue); 482 Global_Append(MAKEFLAGS, "-I"); 483 Global_Append(MAKEFLAGS, argvalue); 484 break; 485 case 'J': 486 MainParseArgJobsInternal(argvalue); 487 break; 488 case 'N': 489 opts.noExecute = true; 490 opts.noRecursiveExecute = true; 491 Global_Append(MAKEFLAGS, "-N"); 492 break; 493 case 'S': 494 opts.keepgoing = false; 495 Global_Append(MAKEFLAGS, "-S"); 496 break; 497 case 'T': 498 tracefile = bmake_strdup(argvalue); 499 Global_Append(MAKEFLAGS, "-T"); 500 Global_Append(MAKEFLAGS, argvalue); 501 break; 502 case 'V': 503 case 'v': 504 opts.printVars = c == 'v' ? PVM_EXPANDED : PVM_UNEXPANDED; 505 Lst_Append(&opts.variables, bmake_strdup(argvalue)); 506 /* XXX: Why always -V? */ 507 Global_Append(MAKEFLAGS, "-V"); 508 Global_Append(MAKEFLAGS, argvalue); 509 break; 510 case 'W': 511 opts.parseWarnFatal = true; 512 /* XXX: why no Global_Append? */ 513 break; 514 case 'X': 515 opts.varNoExportEnv = true; 516 Global_Append(MAKEFLAGS, "-X"); 517 break; 518 case 'd': 519 /* If '-d-opts' don't pass to children */ 520 if (argvalue[0] == '-') 521 argvalue++; 522 else { 523 Global_Append(MAKEFLAGS, "-d"); 524 Global_Append(MAKEFLAGS, argvalue); 525 } 526 MainParseArgDebug(argvalue); 527 break; 528 case 'e': 529 opts.checkEnvFirst = true; 530 Global_Append(MAKEFLAGS, "-e"); 531 break; 532 case 'f': 533 Lst_Append(&opts.makefiles, bmake_strdup(argvalue)); 534 break; 535 case 'i': 536 opts.ignoreErrors = true; 537 Global_Append(MAKEFLAGS, "-i"); 538 break; 539 case 'j': 540 MainParseArgJobs(argvalue); 541 break; 542 case 'k': 543 opts.keepgoing = true; 544 Global_Append(MAKEFLAGS, "-k"); 545 break; 546 case 'm': 547 MainParseArgSysInc(argvalue); 548 /* XXX: why no Var_Append? */ 549 break; 550 case 'n': 551 opts.noExecute = true; 552 Global_Append(MAKEFLAGS, "-n"); 553 break; 554 case 'q': 555 opts.query = true; 556 /* Kind of nonsensical, wot? */ 557 Global_Append(MAKEFLAGS, "-q"); 558 break; 559 case 'r': 560 opts.noBuiltins = true; 561 Global_Append(MAKEFLAGS, "-r"); 562 break; 563 case 's': 564 opts.silent = true; 565 Global_Append(MAKEFLAGS, "-s"); 566 break; 567 case 't': 568 opts.touch = true; 569 Global_Append(MAKEFLAGS, "-t"); 570 break; 571 case 'w': 572 opts.enterFlag = true; 573 Global_Append(MAKEFLAGS, "-w"); 574 break; 575 default: 576 usage(); 577 } 578 return true; 579 } 580 581 /* 582 * Parse the given arguments. Called from main() and from 583 * Main_ParseArgLine() when the .MAKEFLAGS target is used. 584 * 585 * The arguments must be treated as read-only and will be freed after the 586 * call. 587 * 588 * XXX: Deal with command line overriding .MAKEFLAGS in makefile 589 */ 590 static void 591 MainParseArgs(int argc, char **argv) 592 { 593 char c; 594 int arginc; 595 char *argvalue; 596 char *optscan; 597 bool inOption, dashDash = false; 598 599 const char *optspecs = "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w"; 600 /* Can't actually use getopt(3) because rescanning is not portable */ 601 602 rearg: 603 inOption = false; 604 optscan = NULL; 605 while (argc > 1) { 606 const char *optspec; 607 if (!inOption) 608 optscan = argv[1]; 609 c = *optscan++; 610 arginc = 0; 611 if (inOption) { 612 if (c == '\0') { 613 argv++; 614 argc--; 615 inOption = false; 616 continue; 617 } 618 } else { 619 if (c != '-' || dashDash) 620 break; 621 inOption = true; 622 c = *optscan++; 623 } 624 /* '-' found at some earlier point */ 625 optspec = strchr(optspecs, c); 626 if (c != '\0' && optspec != NULL && optspec[1] == ':') { 627 /* 628 * -<something> found, and <something> should have an 629 * argument 630 */ 631 inOption = false; 632 arginc = 1; 633 argvalue = optscan; 634 if (*argvalue == '\0') { 635 if (argc < 3) 636 goto noarg; 637 argvalue = argv[2]; 638 arginc = 2; 639 } 640 } else { 641 argvalue = NULL; 642 } 643 switch (c) { 644 case '\0': 645 arginc = 1; 646 inOption = false; 647 break; 648 case '-': 649 dashDash = true; 650 break; 651 default: 652 if (!MainParseOption(c, argvalue)) 653 goto noarg; 654 } 655 argv += arginc; 656 argc -= arginc; 657 } 658 659 /* 660 * See if the rest of the arguments are variable assignments and 661 * perform them if so. Else take them to be targets and stuff them 662 * on the end of the "create" list. 663 */ 664 for (; argc > 1; argv++, argc--) { 665 if (!Parse_VarAssign(argv[1], false, SCOPE_CMDLINE)) { 666 if (argv[1][0] == '\0') 667 Punt("illegal (null) argument."); 668 if (argv[1][0] == '-' && !dashDash) 669 goto rearg; 670 Lst_Append(&opts.create, bmake_strdup(argv[1])); 671 } 672 } 673 674 return; 675 noarg: 676 (void)fprintf(stderr, "%s: option requires an argument -- %c\n", 677 progname, c); 678 usage(); 679 } 680 681 /* 682 * Break a line of arguments into words and parse them. 683 * 684 * Used when a .MFLAGS or .MAKEFLAGS target is encountered during parsing and 685 * by main() when reading the MAKEFLAGS environment variable. 686 */ 687 void 688 Main_ParseArgLine(const char *line) 689 { 690 Words words; 691 char *buf; 692 const char *p; 693 694 if (line == NULL) 695 return; 696 for (p = line; *p == ' '; p++) 697 continue; 698 if (p[0] == '\0') 699 return; 700 701 { 702 FStr argv0 = Var_Value(SCOPE_GLOBAL, ".MAKE"); 703 buf = str_concat3(argv0.str, " ", p); 704 FStr_Done(&argv0); 705 } 706 707 words = Str_Words(buf, true); 708 if (words.words == NULL) { 709 Error("Unterminated quoted string [%s]", buf); 710 free(buf); 711 return; 712 } 713 free(buf); 714 MainParseArgs((int)words.len, words.words); 715 716 Words_Free(words); 717 } 718 719 bool 720 Main_SetObjdir(bool writable, const char *fmt, ...) 721 { 722 struct stat sb; 723 char *path; 724 char buf[MAXPATHLEN + 1]; 725 char buf2[MAXPATHLEN + 1]; 726 va_list ap; 727 728 va_start(ap, fmt); 729 vsnprintf(path = buf, MAXPATHLEN, fmt, ap); 730 va_end(ap); 731 732 if (path[0] != '/') { 733 if (snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path) <= MAXPATHLEN) 734 path = buf2; 735 else 736 return false; 737 } 738 739 /* look for the directory and try to chdir there */ 740 if (stat(path, &sb) != 0 || !S_ISDIR(sb.st_mode)) 741 return false; 742 743 if ((writable && access(path, W_OK) != 0) || chdir(path) != 0) { 744 (void)fprintf(stderr, "%s: warning: %s: %s.\n", 745 progname, path, strerror(errno)); 746 return false; 747 } 748 749 snprintf(objdir, sizeof objdir, "%s", path); 750 Global_Set(".OBJDIR", objdir); 751 setenv("PWD", objdir, 1); 752 Dir_InitDot(); 753 purge_relative_cached_realpaths(); 754 if (opts.enterFlag && strcmp(objdir, curdir) != 0) 755 enterFlagObj = true; 756 return true; 757 } 758 759 static bool 760 SetVarObjdir(bool writable, const char *var, const char *suffix) 761 { 762 FStr path = Var_Value(SCOPE_CMDLINE, var); 763 764 if (path.str == NULL || path.str[0] == '\0') { 765 FStr_Done(&path); 766 return false; 767 } 768 769 Var_Expand(&path, SCOPE_GLOBAL, VARE_WANTRES); 770 771 (void)Main_SetObjdir(writable, "%s%s", path.str, suffix); 772 773 FStr_Done(&path); 774 return true; 775 } 776 777 /* 778 * Splits str into words (in-place, modifying it), adding them to the list. 779 * The string must be kept alive as long as the list. 780 */ 781 void 782 AppendWords(StringList *lp, char *str) 783 { 784 char *p; 785 const char *sep = " \t"; 786 787 for (p = strtok(str, sep); p != NULL; p = strtok(NULL, sep)) 788 Lst_Append(lp, p); 789 } 790 791 #ifdef SIGINFO 792 /*ARGSUSED*/ 793 static void 794 siginfo(int signo MAKE_ATTR_UNUSED) 795 { 796 char dir[MAXPATHLEN]; 797 char str[2 * MAXPATHLEN]; 798 int len; 799 if (getcwd(dir, sizeof dir) == NULL) 800 return; 801 len = snprintf(str, sizeof str, "%s: Working in: %s\n", progname, dir); 802 if (len > 0) 803 (void)write(STDERR_FILENO, str, (size_t)len); 804 } 805 #endif 806 807 /* Allow makefiles some control over the mode we run in. */ 808 static void 809 MakeMode(void) 810 { 811 char *mode = Var_Subst("${.MAKE.MODE:tl}", 812 SCOPE_GLOBAL, VARE_WANTRES); 813 /* TODO: handle errors */ 814 815 if (mode[0] != '\0') { 816 if (strstr(mode, "compat") != NULL) { 817 opts.compatMake = true; 818 forceJobs = false; 819 } 820 #if USE_META 821 if (strstr(mode, "meta") != NULL) 822 meta_mode_init(mode); 823 #endif 824 if (strstr(mode, "randomize-targets") != NULL) 825 opts.randomizeTargets = true; 826 } 827 828 free(mode); 829 } 830 831 static void 832 PrintVar(const char *varname, bool expandVars) 833 { 834 if (strchr(varname, '$') != NULL) { 835 char *evalue = Var_Subst(varname, SCOPE_GLOBAL, VARE_WANTRES); 836 /* TODO: handle errors */ 837 printf("%s\n", evalue); 838 free(evalue); 839 840 } else if (expandVars) { 841 char *expr = str_concat3("${", varname, "}"); 842 char *evalue = Var_Subst(expr, SCOPE_GLOBAL, VARE_WANTRES); 843 /* TODO: handle errors */ 844 free(expr); 845 printf("%s\n", evalue); 846 free(evalue); 847 848 } else { 849 FStr value = Var_Value(SCOPE_GLOBAL, varname); 850 printf("%s\n", value.str != NULL ? value.str : ""); 851 FStr_Done(&value); 852 } 853 } 854 855 /* 856 * Return a bool based on a variable. 857 * 858 * If the knob is not set, return the fallback. 859 * If set, anything that looks or smells like "No", "False", "Off", "0", etc. 860 * is false, otherwise true. 861 */ 862 bool 863 GetBooleanExpr(const char *expr, bool fallback) 864 { 865 char *value; 866 bool res; 867 868 value = Var_Subst(expr, SCOPE_GLOBAL, VARE_WANTRES); 869 /* TODO: handle errors */ 870 res = ParseBoolean(value, fallback); 871 free(value); 872 return res; 873 } 874 875 static void 876 doPrintVars(void) 877 { 878 StringListNode *ln; 879 bool expandVars; 880 881 if (opts.printVars == PVM_EXPANDED) 882 expandVars = true; 883 else if (opts.debugVflag) 884 expandVars = false; 885 else 886 expandVars = GetBooleanExpr("${.MAKE.EXPAND_VARIABLES}", 887 false); 888 889 for (ln = opts.variables.first; ln != NULL; ln = ln->next) { 890 const char *varname = ln->datum; 891 PrintVar(varname, expandVars); 892 } 893 } 894 895 static bool 896 runTargets(void) 897 { 898 GNodeList targs = LST_INIT; /* target nodes to create */ 899 bool outOfDate; /* false if all targets up to date */ 900 901 /* 902 * Have now read the entire graph and need to make a list of 903 * targets to create. If none was given on the command line, 904 * we consult the parsing module to find the main target(s) 905 * to create. 906 */ 907 if (Lst_IsEmpty(&opts.create)) 908 Parse_MainName(&targs); 909 else 910 Targ_FindList(&targs, &opts.create); 911 912 if (!opts.compatMake) { 913 /* 914 * Initialize job module before traversing the graph 915 * now that any .BEGIN and .END targets have been read. 916 * This is done only if the -q flag wasn't given 917 * (to prevent the .BEGIN from being executed should 918 * it exist). 919 */ 920 if (!opts.query) { 921 Job_Init(); 922 jobsRunning = true; 923 } 924 925 /* Traverse the graph, checking on all the targets */ 926 outOfDate = Make_Run(&targs); 927 } else { 928 Compat_MakeAll(&targs); 929 outOfDate = false; 930 } 931 Lst_Done(&targs); /* Don't free the targets themselves. */ 932 return outOfDate; 933 } 934 935 /* 936 * Set up the .TARGETS variable to contain the list of targets to be created. 937 * If none specified, make the variable empty for now, the parser will fill 938 * in the default or .MAIN target later. 939 */ 940 static void 941 InitVarTargets(void) 942 { 943 StringListNode *ln; 944 945 if (Lst_IsEmpty(&opts.create)) { 946 Global_Set(".TARGETS", ""); 947 return; 948 } 949 950 for (ln = opts.create.first; ln != NULL; ln = ln->next) { 951 const char *name = ln->datum; 952 Global_Append(".TARGETS", name); 953 } 954 } 955 956 static void 957 InitRandom(void) 958 { 959 struct timeval tv; 960 961 gettimeofday(&tv, NULL); 962 srandom((unsigned int)(tv.tv_sec + tv.tv_usec)); 963 } 964 965 static const char * 966 InitVarMachine(const struct utsname *utsname MAKE_ATTR_UNUSED) 967 { 968 #ifdef FORCE_MACHINE 969 return FORCE_MACHINE; 970 #else 971 const char *machine = getenv("MACHINE"); 972 973 if (machine != NULL) 974 return machine; 975 976 #if defined(MAKE_NATIVE) 977 return utsname->machine; 978 #elif defined(MAKE_MACHINE) 979 return MAKE_MACHINE; 980 #else 981 return "unknown"; 982 #endif 983 #endif 984 } 985 986 static const char * 987 InitVarMachineArch(void) 988 { 989 #ifdef FORCE_MACHINE_ARCH 990 return FORCE_MACHINE_ARCH; 991 #else 992 const char *env = getenv("MACHINE_ARCH"); 993 if (env != NULL) 994 return env; 995 996 #if defined(MAKE_NATIVE) && defined(CTL_HW) 997 { 998 struct utsname utsname; 999 static char machine_arch_buf[sizeof utsname.machine]; 1000 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH }; 1001 size_t len = sizeof machine_arch_buf; 1002 1003 if (sysctl(mib, (unsigned int)__arraycount(mib), 1004 machine_arch_buf, &len, NULL, 0) < 0) { 1005 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", 1006 progname, strerror(errno)); 1007 exit(2); 1008 } 1009 1010 return machine_arch_buf; 1011 } 1012 #elif defined(MACHINE_ARCH) 1013 return MACHINE_ARCH; 1014 #elif defined(MAKE_MACHINE_ARCH) 1015 return MAKE_MACHINE_ARCH; 1016 #else 1017 return "unknown"; 1018 #endif 1019 #endif 1020 } 1021 1022 #ifndef NO_PWD_OVERRIDE 1023 /* 1024 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX 1025 * since the value of curdir can vary depending on how we got 1026 * here. That is, sitting at a shell prompt (shell that provides $PWD) 1027 * or via subdir.mk, in which case it's likely a shell which does 1028 * not provide it. 1029 * 1030 * So, to stop it breaking this case only, we ignore PWD if 1031 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains an expression. 1032 */ 1033 static void 1034 HandlePWD(const struct stat *curdir_st) 1035 { 1036 char *pwd; 1037 FStr makeobjdir; 1038 struct stat pwd_st; 1039 1040 if (ignorePWD || (pwd = getenv("PWD")) == NULL) 1041 return; 1042 1043 if (Var_Exists(SCOPE_CMDLINE, "MAKEOBJDIRPREFIX")) 1044 return; 1045 1046 makeobjdir = Var_Value(SCOPE_CMDLINE, "MAKEOBJDIR"); 1047 if (makeobjdir.str != NULL && strchr(makeobjdir.str, '$') != NULL) 1048 goto ignore_pwd; 1049 1050 if (stat(pwd, &pwd_st) == 0 && 1051 curdir_st->st_ino == pwd_st.st_ino && 1052 curdir_st->st_dev == pwd_st.st_dev) 1053 (void)strncpy(curdir, pwd, MAXPATHLEN); 1054 1055 ignore_pwd: 1056 FStr_Done(&makeobjdir); 1057 } 1058 #endif 1059 1060 /* 1061 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, MAKEOBJDIR is set 1062 * in the environment, try only that value and fall back to .CURDIR if it 1063 * does not exist. 1064 * 1065 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE, 1066 * and finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none of these 1067 * paths exist, just use .CURDIR. 1068 */ 1069 static void 1070 InitObjdir(const char *machine, const char *machine_arch) 1071 { 1072 bool writable; 1073 1074 Dir_InitCur(curdir); 1075 writable = GetBooleanExpr("${MAKE_OBJDIR_CHECK_WRITABLE}", true); 1076 (void)Main_SetObjdir(false, "%s", curdir); 1077 1078 if (!SetVarObjdir(writable, "MAKEOBJDIRPREFIX", curdir) && 1079 !SetVarObjdir(writable, "MAKEOBJDIR", "") && 1080 !Main_SetObjdir(writable, "%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) && 1081 !Main_SetObjdir(writable, "%s.%s", _PATH_OBJDIR, machine) && 1082 !Main_SetObjdir(writable, "%s", _PATH_OBJDIR)) 1083 (void)Main_SetObjdir(writable, "%s%s", _PATH_OBJDIRPREFIX, curdir); 1084 } 1085 1086 /* get rid of resource limit on file descriptors */ 1087 static void 1088 UnlimitFiles(void) 1089 { 1090 #if defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE) 1091 struct rlimit rl; 1092 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 && 1093 rl.rlim_cur != rl.rlim_max) { 1094 #ifdef BMAKE_NOFILE_MAX 1095 if (BMAKE_NOFILE_MAX < rl.rlim_max) 1096 rl.rlim_cur = BMAKE_NOFILE_MAX; 1097 else 1098 #endif 1099 rl.rlim_cur = rl.rlim_max; 1100 (void)setrlimit(RLIMIT_NOFILE, &rl); 1101 } 1102 #endif 1103 } 1104 1105 static void 1106 CmdOpts_Init(void) 1107 { 1108 opts.compatMake = false; 1109 memset(&opts.debug, 0, sizeof(opts.debug)); 1110 /* opts.debug_file has already been initialized earlier */ 1111 opts.strict = false; 1112 opts.debugVflag = false; 1113 opts.checkEnvFirst = false; 1114 Lst_Init(&opts.makefiles); 1115 opts.ignoreErrors = false; /* Pay attention to non-zero returns */ 1116 opts.maxJobs = 1; 1117 opts.keepgoing = false; /* Stop on error */ 1118 opts.noRecursiveExecute = false; /* Execute all .MAKE targets */ 1119 opts.noExecute = false; /* Execute all commands */ 1120 opts.query = false; 1121 opts.noBuiltins = false; /* Read the built-in rules */ 1122 opts.silent = false; /* Print commands as executed */ 1123 opts.touch = false; 1124 opts.printVars = PVM_NONE; 1125 Lst_Init(&opts.variables); 1126 opts.parseWarnFatal = false; 1127 opts.enterFlag = false; 1128 opts.varNoExportEnv = false; 1129 Lst_Init(&opts.create); 1130 } 1131 1132 /* 1133 * Initialize MAKE and .MAKE to the path of the executable, so that it can be 1134 * found by execvp(3) and the shells, even after a chdir. 1135 * 1136 * If it's a relative path and contains a '/', resolve it to an absolute path. 1137 * Otherwise keep it as is, assuming it will be found in the PATH. 1138 */ 1139 static void 1140 InitVarMake(const char *argv0) 1141 { 1142 const char *make = argv0; 1143 1144 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) { 1145 char pathbuf[MAXPATHLEN]; 1146 const char *abspath = cached_realpath(argv0, pathbuf); 1147 struct stat st; 1148 if (abspath != NULL && abspath[0] == '/' && 1149 stat(make, &st) == 0) 1150 make = abspath; 1151 } 1152 1153 Global_Set("MAKE", make); 1154 Global_Set(".MAKE", make); 1155 } 1156 1157 /* 1158 * Add the directories from the colon-separated syspath to defSysIncPath. 1159 * After returning, the contents of syspath is unspecified. 1160 */ 1161 static void 1162 InitDefSysIncPath(char *syspath) 1163 { 1164 static char defsyspath[] = _PATH_DEFSYSPATH; 1165 char *start, *p; 1166 1167 /* 1168 * If no user-supplied system path was given (through the -m option) 1169 * add the directories from the DEFSYSPATH (more than one may be given 1170 * as dir1:...:dirn) to the system include path. 1171 */ 1172 if (syspath == NULL || syspath[0] == '\0') 1173 syspath = defsyspath; 1174 else 1175 syspath = bmake_strdup(syspath); 1176 1177 for (start = syspath; *start != '\0'; start = p) { 1178 for (p = start; *p != '\0' && *p != ':'; p++) 1179 continue; 1180 if (*p == ':') 1181 *p++ = '\0'; 1182 1183 /* look for magic parent directory search string */ 1184 if (strncmp(start, ".../", 4) == 0) { 1185 char *dir = Dir_FindHereOrAbove(curdir, start + 4); 1186 if (dir != NULL) { 1187 (void)SearchPath_Add(defSysIncPath, dir); 1188 free(dir); 1189 } 1190 } else { 1191 (void)SearchPath_Add(defSysIncPath, start); 1192 } 1193 } 1194 1195 if (syspath != defsyspath) 1196 free(syspath); 1197 } 1198 1199 static void 1200 ReadBuiltinRules(void) 1201 { 1202 StringListNode *ln; 1203 StringList sysMkFiles = LST_INIT; 1204 1205 SearchPath_Expand( 1206 Lst_IsEmpty(&sysIncPath->dirs) ? defSysIncPath : sysIncPath, 1207 _PATH_DEFSYSMK, 1208 &sysMkFiles); 1209 if (Lst_IsEmpty(&sysMkFiles)) 1210 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK); 1211 1212 for (ln = sysMkFiles.first; ln != NULL; ln = ln->next) 1213 if (ReadMakefile(ln->datum)) 1214 break; 1215 1216 if (ln == NULL) 1217 Fatal("%s: cannot open %s.", 1218 progname, (const char *)sysMkFiles.first->datum); 1219 1220 Lst_DoneCall(&sysMkFiles, free); 1221 } 1222 1223 static void 1224 InitMaxJobs(void) 1225 { 1226 char *value; 1227 int n; 1228 1229 if (forceJobs || opts.compatMake || 1230 !Var_Exists(SCOPE_GLOBAL, ".MAKE.JOBS")) 1231 return; 1232 1233 value = Var_Subst("${.MAKE.JOBS}", SCOPE_GLOBAL, VARE_WANTRES); 1234 /* TODO: handle errors */ 1235 n = (int)strtol(value, NULL, 0); 1236 if (n < 1) { 1237 (void)fprintf(stderr, 1238 "%s: illegal value for .MAKE.JOBS " 1239 "-- must be positive integer!\n", 1240 progname); 1241 exit(2); /* Not 1 so -q can distinguish error */ 1242 } 1243 1244 if (n != opts.maxJobs) { 1245 Global_Append(MAKEFLAGS, "-j"); 1246 Global_Append(MAKEFLAGS, value); 1247 } 1248 1249 opts.maxJobs = n; 1250 maxJobTokens = opts.maxJobs; 1251 forceJobs = true; 1252 free(value); 1253 } 1254 1255 /* 1256 * For compatibility, look at the directories in the VPATH variable 1257 * and add them to the search path, if the variable is defined. The 1258 * variable's value is in the same format as the PATH environment 1259 * variable, i.e. <directory>:<directory>:<directory>... 1260 */ 1261 static void 1262 InitVpath(void) 1263 { 1264 char *vpath, savec, *path; 1265 if (!Var_Exists(SCOPE_CMDLINE, "VPATH")) 1266 return; 1267 1268 vpath = Var_Subst("${VPATH}", SCOPE_CMDLINE, VARE_WANTRES); 1269 /* TODO: handle errors */ 1270 path = vpath; 1271 do { 1272 char *p; 1273 /* skip to end of directory */ 1274 for (p = path; *p != ':' && *p != '\0'; p++) 1275 continue; 1276 /* Save terminator character so know when to stop */ 1277 savec = *p; 1278 *p = '\0'; 1279 /* Add directory to search path */ 1280 (void)SearchPath_Add(&dirSearchPath, path); 1281 *p = savec; 1282 path = p + 1; 1283 } while (savec == ':'); 1284 free(vpath); 1285 } 1286 1287 static void 1288 ReadAllMakefiles(const StringList *makefiles) 1289 { 1290 StringListNode *ln; 1291 1292 for (ln = makefiles->first; ln != NULL; ln = ln->next) { 1293 const char *fname = ln->datum; 1294 if (!ReadMakefile(fname)) 1295 Fatal("%s: cannot open %s.", progname, fname); 1296 } 1297 } 1298 1299 static void 1300 ReadFirstDefaultMakefile(void) 1301 { 1302 StringList makefiles = LST_INIT; 1303 StringListNode *ln; 1304 char *prefs = Var_Subst("${.MAKE.MAKEFILE_PREFERENCE}", 1305 SCOPE_CMDLINE, VARE_WANTRES); 1306 /* TODO: handle errors */ 1307 1308 AppendWords(&makefiles, prefs); 1309 1310 for (ln = makefiles.first; ln != NULL; ln = ln->next) 1311 if (ReadMakefile(ln->datum)) 1312 break; 1313 1314 Lst_Done(&makefiles); 1315 free(prefs); 1316 } 1317 1318 /* 1319 * Initialize variables such as MAKE, MACHINE, .MAKEFLAGS. 1320 * Initialize a few modules. 1321 * Parse the arguments from MAKEFLAGS and the command line. 1322 */ 1323 static void 1324 main_Init(int argc, char **argv) 1325 { 1326 struct stat sa; 1327 const char *machine; 1328 const char *machine_arch; 1329 char *syspath = getenv("MAKESYSPATH"); 1330 struct utsname utsname; 1331 1332 /* default to writing debug to stderr */ 1333 opts.debug_file = stderr; 1334 1335 Str_Intern_Init(); 1336 HashTable_Init(&cached_realpaths); 1337 1338 #ifdef SIGINFO 1339 (void)bmake_signal(SIGINFO, siginfo); 1340 #endif 1341 1342 InitRandom(); 1343 1344 progname = str_basename(argv[0]); 1345 1346 UnlimitFiles(); 1347 1348 if (uname(&utsname) == -1) { 1349 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname, 1350 strerror(errno)); 1351 exit(2); 1352 } 1353 1354 machine = InitVarMachine(&utsname); 1355 machine_arch = InitVarMachineArch(); 1356 1357 myPid = getpid(); /* remember this for vFork() */ 1358 1359 /* Just in case MAKEOBJDIR wants us to do something tricky. */ 1360 Targ_Init(); 1361 Var_Init(); 1362 Global_Set_ReadOnly(".MAKE.OS", utsname.sysname); 1363 Global_Set("MACHINE", machine); 1364 Global_Set("MACHINE_ARCH", machine_arch); 1365 #ifdef MAKE_VERSION 1366 Global_Set("MAKE_VERSION", MAKE_VERSION); 1367 #endif 1368 Global_Set_ReadOnly(".newline", "\n"); 1369 #ifndef MAKEFILE_PREFERENCE_LIST 1370 /* This is the traditional preference for makefiles. */ 1371 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile" 1372 #endif 1373 Global_Set(".MAKE.MAKEFILE_PREFERENCE", MAKEFILE_PREFERENCE_LIST); 1374 Global_Set(".MAKE.DEPENDFILE", ".depend"); 1375 /* Tell makefiles like jobs.mk whether we support -jC */ 1376 #ifdef _SC_NPROCESSORS_ONLN 1377 Global_Set_ReadOnly(".MAKE.JOBS.C", "yes"); 1378 #else 1379 Global_Set_ReadOnly(".MAKE.JOBS.C", "no"); 1380 #endif 1381 1382 CmdOpts_Init(); 1383 allPrecious = false; /* Remove targets when interrupted */ 1384 deleteOnError = false; /* Historical default behavior */ 1385 jobsRunning = false; 1386 1387 maxJobTokens = opts.maxJobs; 1388 ignorePWD = false; 1389 1390 /* 1391 * Initialize the parsing, directory and variable modules to prepare 1392 * for the reading of inclusion paths and variable settings on the 1393 * command line 1394 */ 1395 1396 /* 1397 * Initialize various variables. 1398 * MAKE also gets this name, for compatibility 1399 * .MAKEFLAGS gets set to the empty string just in case. 1400 * MFLAGS also gets initialized empty, for compatibility. 1401 */ 1402 Parse_Init(); 1403 InitVarMake(argv[0]); 1404 Global_Set(MAKEFLAGS, ""); 1405 Global_Set(".MAKEOVERRIDES", ""); 1406 Global_Set("MFLAGS", ""); 1407 Global_Set(".ALLTARGETS", ""); 1408 Var_Set(SCOPE_CMDLINE, ".MAKE.LEVEL.ENV", MAKE_LEVEL_ENV); 1409 1410 /* Set some other useful variables. */ 1411 { 1412 char buf[64], *ep = getenv(MAKE_LEVEL_ENV); 1413 1414 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0; 1415 if (makelevel < 0) 1416 makelevel = 0; 1417 snprintf(buf, sizeof buf, "%d", makelevel); 1418 Global_Set(".MAKE.LEVEL", buf); 1419 snprintf(buf, sizeof buf, "%u", myPid); 1420 Global_Set_ReadOnly(".MAKE.PID", buf); 1421 snprintf(buf, sizeof buf, "%u", getppid()); 1422 Global_Set_ReadOnly(".MAKE.PPID", buf); 1423 snprintf(buf, sizeof buf, "%u", getuid()); 1424 Global_Set_ReadOnly(".MAKE.UID", buf); 1425 snprintf(buf, sizeof buf, "%u", getgid()); 1426 Global_Set_ReadOnly(".MAKE.GID", buf); 1427 } 1428 if (makelevel > 0) { 1429 char pn[1024]; 1430 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel); 1431 progname = bmake_strdup(pn); 1432 } 1433 1434 #ifdef USE_META 1435 meta_init(); 1436 #endif 1437 Dir_Init(); 1438 1439 { 1440 char *makeflags = explode(getenv("MAKEFLAGS")); 1441 Main_ParseArgLine(makeflags); 1442 free(makeflags); 1443 } 1444 1445 if (getcwd(curdir, MAXPATHLEN) == NULL) { 1446 (void)fprintf(stderr, "%s: getcwd: %s.\n", 1447 progname, strerror(errno)); 1448 exit(2); 1449 } 1450 1451 MainParseArgs(argc, argv); 1452 1453 if (opts.enterFlag) 1454 printf("%s: Entering directory `%s'\n", progname, curdir); 1455 1456 if (stat(curdir, &sa) == -1) { 1457 (void)fprintf(stderr, "%s: %s: %s.\n", 1458 progname, curdir, strerror(errno)); 1459 exit(2); 1460 } 1461 1462 #ifndef NO_PWD_OVERRIDE 1463 HandlePWD(&sa); 1464 #endif 1465 Global_Set(".CURDIR", curdir); 1466 1467 InitObjdir(machine, machine_arch); 1468 1469 Arch_Init(); 1470 Suff_Init(); 1471 Trace_Init(tracefile); 1472 1473 defaultNode = NULL; 1474 (void)time(&now); 1475 1476 Trace_Log(MAKESTART, NULL); 1477 1478 InitVarTargets(); 1479 1480 InitDefSysIncPath(syspath); 1481 } 1482 1483 /* 1484 * Read the system makefile followed by either makefile, Makefile or the 1485 * files given by the -f option. Exit on parse errors. 1486 */ 1487 static void 1488 main_ReadFiles(void) 1489 { 1490 1491 if (Lst_IsEmpty(&sysIncPath->dirs)) 1492 SearchPath_AddAll(sysIncPath, defSysIncPath); 1493 1494 Dir_SetSYSPATH(); 1495 if (!opts.noBuiltins) 1496 ReadBuiltinRules(); 1497 1498 posix_state = PS_MAYBE_NEXT_LINE; 1499 if (!Lst_IsEmpty(&opts.makefiles)) 1500 ReadAllMakefiles(&opts.makefiles); 1501 else 1502 ReadFirstDefaultMakefile(); 1503 } 1504 1505 /* Compute the dependency graph. */ 1506 static void 1507 main_PrepareMaking(void) 1508 { 1509 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */ 1510 if (!opts.noBuiltins || opts.printVars == PVM_NONE) { 1511 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE}", 1512 SCOPE_CMDLINE, VARE_WANTRES); 1513 if (makeDependfile[0] != '\0') { 1514 /* TODO: handle errors */ 1515 doing_depend = true; 1516 (void)ReadMakefile(makeDependfile); 1517 doing_depend = false; 1518 } 1519 } 1520 1521 if (enterFlagObj) 1522 printf("%s: Entering directory `%s'\n", progname, objdir); 1523 1524 MakeMode(); 1525 1526 { 1527 FStr makeflags = Var_Value(SCOPE_GLOBAL, MAKEFLAGS); 1528 Global_Append("MFLAGS", makeflags.str); 1529 FStr_Done(&makeflags); 1530 } 1531 1532 InitMaxJobs(); 1533 1534 if (!opts.compatMake && !forceJobs) 1535 opts.compatMake = true; 1536 1537 if (!opts.compatMake) 1538 Job_ServerStart(maxJobTokens, jp_0, jp_1); 1539 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n", 1540 jp_0, jp_1, opts.maxJobs, maxJobTokens, opts.compatMake ? 1 : 0); 1541 1542 if (opts.printVars == PVM_NONE) 1543 Main_ExportMAKEFLAGS(true); /* initial export */ 1544 1545 InitVpath(); 1546 1547 /* 1548 * Now that all search paths have been read for suffixes et al, it's 1549 * time to add the default search path to their lists... 1550 */ 1551 Suff_ExtendPaths(); 1552 1553 /* 1554 * Propagate attributes through :: dependency lists. 1555 */ 1556 Targ_Propagate(); 1557 1558 /* print the initial graph, if the user requested it */ 1559 if (DEBUG(GRAPH1)) 1560 Targ_PrintGraph(1); 1561 } 1562 1563 /* 1564 * Make the targets. 1565 * If the -v or -V options are given, print variables instead. 1566 * Return whether any of the targets is out-of-date. 1567 */ 1568 static bool 1569 main_Run(void) 1570 { 1571 if (opts.printVars != PVM_NONE) { 1572 /* print the values of any variables requested by the user */ 1573 doPrintVars(); 1574 return false; 1575 } else { 1576 return runTargets(); 1577 } 1578 } 1579 1580 /* Clean up after making the targets. */ 1581 static void 1582 main_CleanUp(void) 1583 { 1584 #ifdef CLEANUP 1585 Lst_DoneCall(&opts.variables, free); 1586 Lst_DoneCall(&opts.makefiles, free); 1587 Lst_DoneCall(&opts.create, free); 1588 #endif 1589 1590 if (DEBUG(GRAPH2)) 1591 Targ_PrintGraph(2); 1592 1593 Trace_Log(MAKEEND, NULL); 1594 1595 if (enterFlagObj) 1596 printf("%s: Leaving directory `%s'\n", progname, objdir); 1597 if (opts.enterFlag) 1598 printf("%s: Leaving directory `%s'\n", progname, curdir); 1599 1600 #ifdef USE_META 1601 meta_finish(); 1602 #endif 1603 Suff_End(); 1604 Targ_End(); 1605 Arch_End(); 1606 Var_End(); 1607 Parse_End(); 1608 Dir_End(); 1609 Job_End(); 1610 Trace_End(); 1611 Str_Intern_End(); 1612 } 1613 1614 /* Determine the exit code. */ 1615 static int 1616 main_Exit(bool outOfDate) 1617 { 1618 if (opts.strict && (main_errors > 0 || Parse_NumErrors() > 0)) 1619 return 2; /* Not 1 so -q can distinguish error */ 1620 return outOfDate ? 1 : 0; 1621 } 1622 1623 int 1624 main(int argc, char **argv) 1625 { 1626 bool outOfDate; 1627 1628 main_Init(argc, argv); 1629 main_ReadFiles(); 1630 main_PrepareMaking(); 1631 outOfDate = main_Run(); 1632 main_CleanUp(); 1633 return main_Exit(outOfDate); 1634 } 1635 1636 /* 1637 * Open and parse the given makefile, with all its side effects. 1638 * Return false if the file could not be opened. 1639 */ 1640 static bool 1641 ReadMakefile(const char *fname) 1642 { 1643 int fd; 1644 char *name, *path = NULL; 1645 1646 if (strcmp(fname, "-") == 0) { 1647 Parse_File("(stdin)", -1); 1648 Var_Set(SCOPE_INTERNAL, "MAKEFILE", ""); 1649 } else { 1650 /* if we've chdir'd, rebuild the path name */ 1651 if (strcmp(curdir, objdir) != 0 && *fname != '/') { 1652 path = str_concat3(curdir, "/", fname); 1653 fd = open(path, O_RDONLY); 1654 if (fd != -1) { 1655 fname = path; 1656 goto found; 1657 } 1658 free(path); 1659 1660 /* If curdir failed, try objdir (ala .depend) */ 1661 path = str_concat3(objdir, "/", fname); 1662 fd = open(path, O_RDONLY); 1663 if (fd != -1) { 1664 fname = path; 1665 goto found; 1666 } 1667 } else { 1668 fd = open(fname, O_RDONLY); 1669 if (fd != -1) 1670 goto found; 1671 } 1672 /* look in -I and system include directories. */ 1673 name = Dir_FindFile(fname, parseIncPath); 1674 if (name == NULL) { 1675 SearchPath *sysInc = Lst_IsEmpty(&sysIncPath->dirs) 1676 ? defSysIncPath : sysIncPath; 1677 name = Dir_FindFile(fname, sysInc); 1678 } 1679 if (name == NULL || (fd = open(name, O_RDONLY)) == -1) { 1680 free(name); 1681 free(path); 1682 return false; 1683 } 1684 fname = name; 1685 /* 1686 * set the MAKEFILE variable desired by System V fans -- the 1687 * placement of the setting here means it gets set to the last 1688 * makefile specified, as it is set by SysV make. 1689 */ 1690 found: 1691 if (!doing_depend) 1692 Var_Set(SCOPE_INTERNAL, "MAKEFILE", fname); 1693 Parse_File(fname, fd); 1694 } 1695 free(path); 1696 return true; 1697 } 1698 1699 /* 1700 * Execute the command in cmd, and return its output (only stdout, not 1701 * stderr, possibly empty). In the output, replace newlines with spaces. 1702 */ 1703 char * 1704 Cmd_Exec(const char *cmd, char **error) 1705 { 1706 const char *args[4]; /* Arguments for invoking the shell */ 1707 int pipefds[2]; 1708 int cpid; /* Child PID */ 1709 int pid; /* PID from wait() */ 1710 int status; /* command exit status */ 1711 Buffer buf; /* buffer to store the result */ 1712 ssize_t bytes_read; 1713 char *output; 1714 char *p; 1715 int saved_errno; 1716 char cmd_file[MAXPATHLEN]; 1717 size_t cmd_len; 1718 int cmd_fd = -1; 1719 1720 if (shellPath == NULL) 1721 Shell_Init(); 1722 1723 cmd_len = strlen(cmd); 1724 if (cmd_len > 1000) { 1725 cmd_fd = mkTempFile(NULL, cmd_file, sizeof(cmd_file)); 1726 if (cmd_fd >= 0) { 1727 ssize_t n; 1728 1729 n = write(cmd_fd, cmd, cmd_len); 1730 close(cmd_fd); 1731 if (n < (ssize_t)cmd_len) { 1732 unlink(cmd_file); 1733 cmd_fd = -1; 1734 } 1735 } 1736 } 1737 1738 args[0] = shellName; 1739 if (cmd_fd >= 0) { 1740 args[1] = cmd_file; 1741 args[2] = NULL; 1742 } else { 1743 cmd_file[0] = '\0'; 1744 args[1] = "-c"; 1745 args[2] = cmd; 1746 args[3] = NULL; 1747 } 1748 DEBUG1(VAR, "Capturing the output of command \"%s\"\n", cmd); 1749 1750 if (pipe(pipefds) == -1) { 1751 *error = str_concat3( 1752 "Couldn't create pipe for \"", cmd, "\""); 1753 return bmake_strdup(""); 1754 } 1755 1756 Var_ReexportVars(SCOPE_GLOBAL); 1757 1758 switch (cpid = vfork()) { 1759 case 0: 1760 (void)close(pipefds[0]); 1761 (void)dup2(pipefds[1], STDOUT_FILENO); 1762 (void)close(pipefds[1]); 1763 1764 (void)execv(shellPath, UNCONST(args)); 1765 _exit(1); 1766 /* NOTREACHED */ 1767 1768 case -1: 1769 *error = str_concat3("Couldn't exec \"", cmd, "\""); 1770 return bmake_strdup(""); 1771 } 1772 1773 (void)close(pipefds[1]); /* No need for the writing half */ 1774 1775 saved_errno = 0; 1776 Buf_Init(&buf); 1777 1778 do { 1779 char result[BUFSIZ]; 1780 bytes_read = read(pipefds[0], result, sizeof result); 1781 if (bytes_read > 0) 1782 Buf_AddBytes(&buf, result, (size_t)bytes_read); 1783 } while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR)); 1784 if (bytes_read == -1) 1785 saved_errno = errno; 1786 1787 (void)close(pipefds[0]); /* Close the input side of the pipe. */ 1788 1789 while ((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0) 1790 JobReapChild(pid, status, false); 1791 1792 if (Buf_EndsWith(&buf, '\n')) 1793 buf.data[buf.len - 1] = '\0'; 1794 1795 output = Buf_DoneData(&buf); 1796 for (p = output; *p != '\0'; p++) 1797 if (*p == '\n') 1798 *p = ' '; 1799 1800 if (WIFSIGNALED(status)) 1801 *error = str_concat3("\"", cmd, "\" exited on a signal"); 1802 else if (WEXITSTATUS(status) != 0) 1803 *error = str_concat3( 1804 "\"", cmd, "\" returned non-zero status"); 1805 else if (saved_errno != 0) 1806 *error = str_concat3( 1807 "Couldn't read shell's output for \"", cmd, "\""); 1808 else 1809 *error = NULL; 1810 if (cmd_file[0] != '\0') 1811 unlink(cmd_file); 1812 return output; 1813 } 1814 1815 /* 1816 * Print a printf-style error message. 1817 * 1818 * In default mode, this error message has no consequences, for compatibility 1819 * reasons, in particular it does not affect the exit status. Only in lint 1820 * mode (-dL) it does. 1821 */ 1822 void 1823 Error(const char *fmt, ...) 1824 { 1825 va_list ap; 1826 FILE *f; 1827 1828 f = opts.debug_file; 1829 if (f == stdout) 1830 f = stderr; 1831 (void)fflush(stdout); 1832 1833 for (;;) { 1834 fprintf(f, "%s: ", progname); 1835 va_start(ap, fmt); 1836 (void)vfprintf(f, fmt, ap); 1837 va_end(ap); 1838 (void)fprintf(f, "\n"); 1839 (void)fflush(f); 1840 if (f == stderr) 1841 break; 1842 f = stderr; 1843 } 1844 main_errors++; 1845 } 1846 1847 /* 1848 * Wait for any running jobs to finish, then produce an error message, 1849 * finally exit immediately. 1850 * 1851 * Exiting immediately differs from Parse_Error, which exits only after the 1852 * current top-level makefile has been parsed completely. 1853 */ 1854 void 1855 Fatal(const char *fmt, ...) 1856 { 1857 va_list ap; 1858 1859 if (jobsRunning) 1860 Job_Wait(); 1861 1862 (void)fflush(stdout); 1863 fprintf(stderr, "%s: ", progname); 1864 va_start(ap, fmt); 1865 (void)vfprintf(stderr, fmt, ap); 1866 va_end(ap); 1867 (void)fprintf(stderr, "\n"); 1868 (void)fflush(stderr); 1869 PrintStackTrace(true); 1870 1871 PrintOnError(NULL, "\n"); 1872 1873 if (DEBUG(GRAPH2) || DEBUG(GRAPH3)) 1874 Targ_PrintGraph(2); 1875 Trace_Log(MAKEERROR, NULL); 1876 exit(2); /* Not 1 so -q can distinguish error */ 1877 } 1878 1879 /* 1880 * Major exception once jobs are being created. 1881 * Kills all jobs, prints a message and exits. 1882 */ 1883 void 1884 Punt(const char *fmt, ...) 1885 { 1886 va_list ap; 1887 1888 (void)fflush(stdout); 1889 (void)fprintf(stderr, "%s: ", progname); 1890 va_start(ap, fmt); 1891 (void)vfprintf(stderr, fmt, ap); 1892 va_end(ap); 1893 (void)fprintf(stderr, "\n"); 1894 (void)fflush(stderr); 1895 1896 PrintOnError(NULL, "\n"); 1897 1898 DieHorribly(); 1899 } 1900 1901 /* Exit without giving a message. */ 1902 void 1903 DieHorribly(void) 1904 { 1905 if (jobsRunning) 1906 Job_AbortAll(); 1907 if (DEBUG(GRAPH2)) 1908 Targ_PrintGraph(2); 1909 Trace_Log(MAKEERROR, NULL); 1910 exit(2); /* Not 1 so -q can distinguish error */ 1911 } 1912 1913 /* 1914 * Called when aborting due to errors in child shell to signal abnormal exit. 1915 * The program exits. 1916 * Errors is the number of errors encountered in Make_Make. 1917 */ 1918 void 1919 Finish(int errs) 1920 { 1921 if (shouldDieQuietly(NULL, -1)) 1922 exit(2); 1923 Fatal("%d error%s", errs, errs == 1 ? "" : "s"); 1924 } 1925 1926 int 1927 unlink_file(const char *file) 1928 { 1929 struct stat st; 1930 1931 if (lstat(file, &st) == -1) 1932 return -1; 1933 1934 if (S_ISDIR(st.st_mode)) { 1935 /* 1936 * POSIX says for unlink: "The path argument shall not name 1937 * a directory unless [...]". 1938 */ 1939 errno = EISDIR; 1940 return -1; 1941 } 1942 return unlink(file); 1943 } 1944 1945 static void 1946 write_all(int fd, const void *data, size_t n) 1947 { 1948 const char *mem = data; 1949 1950 while (n > 0) { 1951 ssize_t written = write(fd, mem, n); 1952 /* XXX: Should this EAGAIN be EINTR? */ 1953 if (written == -1 && errno == EAGAIN) 1954 continue; 1955 if (written == -1) 1956 break; 1957 mem += written; 1958 n -= (size_t)written; 1959 } 1960 } 1961 1962 /* Print why exec failed, avoiding stdio. */ 1963 void MAKE_ATTR_DEAD 1964 execDie(const char *af, const char *av) 1965 { 1966 Buffer buf; 1967 1968 Buf_Init(&buf); 1969 Buf_AddStr(&buf, progname); 1970 Buf_AddStr(&buf, ": "); 1971 Buf_AddStr(&buf, af); 1972 Buf_AddStr(&buf, "("); 1973 Buf_AddStr(&buf, av); 1974 Buf_AddStr(&buf, ") failed ("); 1975 Buf_AddStr(&buf, strerror(errno)); 1976 Buf_AddStr(&buf, ")\n"); 1977 1978 write_all(STDERR_FILENO, buf.data, buf.len); 1979 1980 Buf_Done(&buf); 1981 _exit(1); 1982 } 1983 1984 static void 1985 purge_relative_cached_realpaths(void) 1986 { 1987 HashEntry *he, *next; 1988 HashIter hi; 1989 1990 HashIter_Init(&hi, &cached_realpaths); 1991 he = HashIter_Next(&hi); 1992 while (he != NULL) { 1993 next = HashIter_Next(&hi); 1994 if (he->key[0] != '/') { 1995 DEBUG1(DIR, "cached_realpath: purging %s\n", he->key); 1996 HashTable_DeleteEntry(&cached_realpaths, he); 1997 /* 1998 * XXX: What about the allocated he->value? Either 1999 * free them or document why they cannot be freed. 2000 */ 2001 } 2002 he = next; 2003 } 2004 } 2005 2006 const char * 2007 cached_realpath(const char *pathname, char *resolved) 2008 { 2009 const char *rp; 2010 2011 if (pathname == NULL || pathname[0] == '\0') 2012 return NULL; 2013 2014 rp = HashTable_FindValue(&cached_realpaths, pathname); 2015 if (rp != NULL) { 2016 /* a hit */ 2017 strncpy(resolved, rp, MAXPATHLEN); 2018 resolved[MAXPATHLEN - 1] = '\0'; 2019 return resolved; 2020 } 2021 2022 rp = realpath(pathname, resolved); 2023 if (rp != NULL) { 2024 HashTable_Set(&cached_realpaths, pathname, bmake_strdup(rp)); 2025 DEBUG2(DIR, "cached_realpath: %s -> %s\n", pathname, rp); 2026 return resolved; 2027 } 2028 2029 /* should we negative-cache? */ 2030 return NULL; 2031 } 2032 2033 /* 2034 * Return true if we should die without noise. 2035 * For example our failing child was a sub-make or failure happened elsewhere. 2036 */ 2037 bool 2038 shouldDieQuietly(GNode *gn, int bf) 2039 { 2040 static int quietly = -1; 2041 2042 if (quietly < 0) { 2043 if (DEBUG(JOB) || 2044 !GetBooleanExpr("${.MAKE.DIE_QUIETLY}", true)) 2045 quietly = 0; 2046 else if (bf >= 0) 2047 quietly = bf; 2048 else 2049 quietly = (gn != NULL && (gn->type & OP_MAKE)) ? 1 : 0; 2050 } 2051 return quietly != 0; 2052 } 2053 2054 static void 2055 SetErrorVars(GNode *gn) 2056 { 2057 StringListNode *ln; 2058 char sts[16]; 2059 2060 /* 2061 * We can print this even if there is no .ERROR target. 2062 */ 2063 snprintf(sts, sizeof(sts), "%d", gn->exit_status); 2064 Global_Set(".ERROR_EXIT", sts); 2065 Global_Set(".ERROR_TARGET", gn->name); 2066 Global_Delete(".ERROR_CMD"); 2067 2068 for (ln = gn->commands.first; ln != NULL; ln = ln->next) { 2069 const char *cmd = ln->datum; 2070 2071 if (cmd == NULL) 2072 break; 2073 Global_Append(".ERROR_CMD", cmd); 2074 } 2075 } 2076 2077 /* 2078 * Print some helpful information in case of an error. 2079 * The caller should exit soon after calling this function. 2080 */ 2081 void 2082 PrintOnError(GNode *gn, const char *msg) 2083 { 2084 static GNode *errorNode = NULL; 2085 2086 if (DEBUG(HASH)) { 2087 Targ_Stats(); 2088 Var_Stats(); 2089 } 2090 2091 if (errorNode != NULL) 2092 return; /* we've been here! */ 2093 2094 printf("%s%s: stopped in %s\n", msg, progname, curdir); 2095 2096 /* we generally want to keep quiet if a sub-make died */ 2097 if (shouldDieQuietly(gn, -1)) 2098 return; 2099 2100 if (gn != NULL) 2101 SetErrorVars(gn); 2102 2103 { 2104 char *errorVarsValues = Var_Subst( 2105 "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}", 2106 SCOPE_GLOBAL, VARE_WANTRES); 2107 /* TODO: handle errors */ 2108 printf("%s", errorVarsValues); 2109 free(errorVarsValues); 2110 } 2111 2112 fflush(stdout); 2113 2114 /* 2115 * Finally, see if there is a .ERROR target, and run it if so. 2116 */ 2117 errorNode = Targ_FindNode(".ERROR"); 2118 if (errorNode != NULL) { 2119 errorNode->type |= OP_SPECIAL; 2120 Compat_Make(errorNode, errorNode); 2121 } 2122 } 2123 2124 void 2125 Main_ExportMAKEFLAGS(bool first) 2126 { 2127 static bool once = true; 2128 char *flags; 2129 2130 if (once != first) 2131 return; 2132 once = false; 2133 2134 flags = Var_Subst( 2135 "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}", 2136 SCOPE_CMDLINE, VARE_WANTRES); 2137 /* TODO: handle errors */ 2138 if (flags[0] != '\0') 2139 setenv("MAKEFLAGS", flags, 1); 2140 } 2141 2142 char * 2143 getTmpdir(void) 2144 { 2145 static char *tmpdir = NULL; 2146 struct stat st; 2147 2148 if (tmpdir != NULL) 2149 return tmpdir; 2150 2151 /* Honor $TMPDIR if it is valid, strip a trailing '/'. */ 2152 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP ":S,/$,,W}/", 2153 SCOPE_GLOBAL, VARE_WANTRES); 2154 /* TODO: handle errors */ 2155 2156 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) { 2157 free(tmpdir); 2158 tmpdir = bmake_strdup(_PATH_TMP); 2159 } 2160 return tmpdir; 2161 } 2162 2163 /* 2164 * Create and open a temp file using "pattern". 2165 * If tfile is provided, set it to a copy of the filename created. 2166 * Otherwise unlink the file once open. 2167 */ 2168 int 2169 mkTempFile(const char *pattern, char *tfile, size_t tfile_sz) 2170 { 2171 static char *tmpdir = NULL; 2172 char tbuf[MAXPATHLEN]; 2173 int fd; 2174 2175 if (pattern == NULL) 2176 pattern = TMPPAT; 2177 if (tmpdir == NULL) 2178 tmpdir = getTmpdir(); 2179 if (tfile == NULL) { 2180 tfile = tbuf; 2181 tfile_sz = sizeof tbuf; 2182 } 2183 2184 if (pattern[0] == '/') 2185 snprintf(tfile, tfile_sz, "%s", pattern); 2186 else 2187 snprintf(tfile, tfile_sz, "%s%s", tmpdir, pattern); 2188 2189 if ((fd = mkstemp(tfile)) < 0) 2190 Punt("Could not create temporary file %s: %s", tfile, 2191 strerror(errno)); 2192 if (tfile == tbuf) 2193 unlink(tfile); /* we just want the descriptor */ 2194 2195 return fd; 2196 } 2197 2198 /* 2199 * Convert a string representation of a boolean into a boolean value. 2200 * Anything that looks like "No", "False", "Off", "0" etc. is false, 2201 * the empty string is the fallback, everything else is true. 2202 */ 2203 bool 2204 ParseBoolean(const char *s, bool fallback) 2205 { 2206 char ch = ch_tolower(s[0]); 2207 if (ch == '\0') 2208 return fallback; 2209 if (ch == '0' || ch == 'f' || ch == 'n') 2210 return false; 2211 if (ch == 'o') 2212 return ch_tolower(s[1]) != 'f'; 2213 return true; 2214 } 2215