1 /*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Cimarron D. Taylor of the University of California, Berkeley. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef lint 34 #if 0 35 static const char sccsid[] = "@(#)function.c 8.10 (Berkeley) 5/4/95"; 36 #endif 37 #endif /* not lint */ 38 39 #include <sys/cdefs.h> 40 __FBSDID("$FreeBSD$"); 41 42 #include <sys/param.h> 43 #include <sys/ucred.h> 44 #include <sys/stat.h> 45 #include <sys/types.h> 46 #include <sys/acl.h> 47 #include <sys/wait.h> 48 #include <sys/mount.h> 49 50 #include <dirent.h> 51 #include <err.h> 52 #include <errno.h> 53 #include <fnmatch.h> 54 #include <fts.h> 55 #include <grp.h> 56 #include <limits.h> 57 #include <pwd.h> 58 #include <regex.h> 59 #include <stdio.h> 60 #include <stdlib.h> 61 #include <string.h> 62 #include <unistd.h> 63 #include <ctype.h> 64 65 #include "find.h" 66 67 static PLAN *palloc(OPTION *); 68 static long long find_parsenum(PLAN *, const char *, char *, char *); 69 static long long find_parsetime(PLAN *, const char *, char *); 70 static char *nextarg(OPTION *, char ***); 71 72 extern char **environ; 73 74 static PLAN *lastexecplus = NULL; 75 76 #define COMPARE(a, b) do { \ 77 switch (plan->flags & F_ELG_MASK) { \ 78 case F_EQUAL: \ 79 return (a == b); \ 80 case F_LESSTHAN: \ 81 return (a < b); \ 82 case F_GREATER: \ 83 return (a > b); \ 84 default: \ 85 abort(); \ 86 } \ 87 } while(0) 88 89 static PLAN * 90 palloc(OPTION *option) 91 { 92 PLAN *new; 93 94 if ((new = malloc(sizeof(PLAN))) == NULL) 95 err(1, NULL); 96 new->execute = option->execute; 97 new->flags = option->flags; 98 new->next = NULL; 99 return new; 100 } 101 102 /* 103 * find_parsenum -- 104 * Parse a string of the form [+-]# and return the value. 105 */ 106 static long long 107 find_parsenum(PLAN *plan, const char *option, char *vp, char *endch) 108 { 109 long long value; 110 char *endchar, *str; /* Pointer to character ending conversion. */ 111 112 /* Determine comparison from leading + or -. */ 113 str = vp; 114 switch (*str) { 115 case '+': 116 ++str; 117 plan->flags |= F_GREATER; 118 break; 119 case '-': 120 ++str; 121 plan->flags |= F_LESSTHAN; 122 break; 123 default: 124 plan->flags |= F_EQUAL; 125 break; 126 } 127 128 /* 129 * Convert the string with strtoq(). Note, if strtoq() returns zero 130 * and endchar points to the beginning of the string we know we have 131 * a syntax error. 132 */ 133 value = strtoq(str, &endchar, 10); 134 if (value == 0 && endchar == str) 135 errx(1, "%s: %s: illegal numeric value", option, vp); 136 if (endchar[0] && endch == NULL) 137 errx(1, "%s: %s: illegal trailing character", option, vp); 138 if (endch) 139 *endch = endchar[0]; 140 return value; 141 } 142 143 /* 144 * find_parsetime -- 145 * Parse a string of the form [+-]([0-9]+[smhdw]?)+ and return the value. 146 */ 147 static long long 148 find_parsetime(PLAN *plan, const char *option, char *vp) 149 { 150 long long secs, value; 151 char *str, *unit; /* Pointer to character ending conversion. */ 152 153 /* Determine comparison from leading + or -. */ 154 str = vp; 155 switch (*str) { 156 case '+': 157 ++str; 158 plan->flags |= F_GREATER; 159 break; 160 case '-': 161 ++str; 162 plan->flags |= F_LESSTHAN; 163 break; 164 default: 165 plan->flags |= F_EQUAL; 166 break; 167 } 168 169 value = strtoq(str, &unit, 10); 170 if (value == 0 && unit == str) { 171 errx(1, "%s: %s: illegal time value", option, vp); 172 /* NOTREACHED */ 173 } 174 if (*unit == '\0') 175 return value; 176 177 /* Units syntax. */ 178 secs = 0; 179 for (;;) { 180 switch(*unit) { 181 case 's': /* seconds */ 182 secs += value; 183 break; 184 case 'm': /* minutes */ 185 secs += value * 60; 186 break; 187 case 'h': /* hours */ 188 secs += value * 3600; 189 break; 190 case 'd': /* days */ 191 secs += value * 86400; 192 break; 193 case 'w': /* weeks */ 194 secs += value * 604800; 195 break; 196 default: 197 errx(1, "%s: %s: bad unit '%c'", option, vp, *unit); 198 /* NOTREACHED */ 199 } 200 str = unit + 1; 201 if (*str == '\0') /* EOS */ 202 break; 203 value = strtoq(str, &unit, 10); 204 if (value == 0 && unit == str) { 205 errx(1, "%s: %s: illegal time value", option, vp); 206 /* NOTREACHED */ 207 } 208 if (*unit == '\0') { 209 errx(1, "%s: %s: missing trailing unit", option, vp); 210 /* NOTREACHED */ 211 } 212 } 213 plan->flags |= F_EXACTTIME; 214 return secs; 215 } 216 217 /* 218 * nextarg -- 219 * Check that another argument still exists, return a pointer to it, 220 * and increment the argument vector pointer. 221 */ 222 static char * 223 nextarg(OPTION *option, char ***argvp) 224 { 225 char *arg; 226 227 if ((arg = **argvp) == 0) 228 errx(1, "%s: requires additional arguments", option->name); 229 (*argvp)++; 230 return arg; 231 } /* nextarg() */ 232 233 /* 234 * The value of n for the inode times (atime, birthtime, ctime, mtime) is a 235 * range, i.e. n matches from (n - 1) to n 24 hour periods. This interacts 236 * with -n, such that "-mtime -1" would be less than 0 days, which isn't what 237 * the user wanted. Correct so that -1 is "less than 1". 238 */ 239 #define TIME_CORRECT(p) \ 240 if (((p)->flags & F_ELG_MASK) == F_LESSTHAN) \ 241 ++((p)->t_data); 242 243 /* 244 * -[acm]min n functions -- 245 * 246 * True if the difference between the 247 * file access time (-amin) 248 * file birth time (-Bmin) 249 * last change of file status information (-cmin) 250 * file modification time (-mmin) 251 * and the current time is n min periods. 252 */ 253 int 254 f_Xmin(PLAN *plan, FTSENT *entry) 255 { 256 if (plan->flags & F_TIME_C) { 257 COMPARE((now - entry->fts_statp->st_ctime + 258 60 - 1) / 60, plan->t_data); 259 } else if (plan->flags & F_TIME_A) { 260 COMPARE((now - entry->fts_statp->st_atime + 261 60 - 1) / 60, plan->t_data); 262 } else if (plan->flags & F_TIME_B) { 263 COMPARE((now - entry->fts_statp->st_birthtime + 264 60 - 1) / 60, plan->t_data); 265 } else { 266 COMPARE((now - entry->fts_statp->st_mtime + 267 60 - 1) / 60, plan->t_data); 268 } 269 } 270 271 PLAN * 272 c_Xmin(OPTION *option, char ***argvp) 273 { 274 char *nmins; 275 PLAN *new; 276 277 nmins = nextarg(option, argvp); 278 ftsoptions &= ~FTS_NOSTAT; 279 280 new = palloc(option); 281 new->t_data = find_parsenum(new, option->name, nmins, NULL); 282 TIME_CORRECT(new); 283 return new; 284 } 285 286 /* 287 * -[acm]time n functions -- 288 * 289 * True if the difference between the 290 * file access time (-atime) 291 * file birth time (-Btime) 292 * last change of file status information (-ctime) 293 * file modification time (-mtime) 294 * and the current time is n 24 hour periods. 295 */ 296 297 int 298 f_Xtime(PLAN *plan, FTSENT *entry) 299 { 300 time_t xtime; 301 302 if (plan->flags & F_TIME_A) 303 xtime = entry->fts_statp->st_atime; 304 else if (plan->flags & F_TIME_B) 305 xtime = entry->fts_statp->st_birthtime; 306 else if (plan->flags & F_TIME_C) 307 xtime = entry->fts_statp->st_ctime; 308 else 309 xtime = entry->fts_statp->st_mtime; 310 311 if (plan->flags & F_EXACTTIME) 312 COMPARE(now - xtime, plan->t_data); 313 else 314 COMPARE((now - xtime + 86400 - 1) / 86400, plan->t_data); 315 } 316 317 PLAN * 318 c_Xtime(OPTION *option, char ***argvp) 319 { 320 char *value; 321 PLAN *new; 322 323 value = nextarg(option, argvp); 324 ftsoptions &= ~FTS_NOSTAT; 325 326 new = palloc(option); 327 new->t_data = find_parsetime(new, option->name, value); 328 if (!(new->flags & F_EXACTTIME)) 329 TIME_CORRECT(new); 330 return new; 331 } 332 333 /* 334 * -maxdepth/-mindepth n functions -- 335 * 336 * Does the same as -prune if the level of the current file is 337 * greater/less than the specified maximum/minimum depth. 338 * 339 * Note that -maxdepth and -mindepth are handled specially in 340 * find_execute() so their f_* functions are set to f_always_true(). 341 */ 342 PLAN * 343 c_mXXdepth(OPTION *option, char ***argvp) 344 { 345 char *dstr; 346 PLAN *new; 347 348 dstr = nextarg(option, argvp); 349 if (dstr[0] == '-') 350 /* all other errors handled by find_parsenum() */ 351 errx(1, "%s: %s: value must be positive", option->name, dstr); 352 353 new = palloc(option); 354 if (option->flags & F_MAXDEPTH) 355 maxdepth = find_parsenum(new, option->name, dstr, NULL); 356 else 357 mindepth = find_parsenum(new, option->name, dstr, NULL); 358 return new; 359 } 360 361 /* 362 * -acl function -- 363 * 364 * Show files with EXTENDED ACL attributes. 365 */ 366 int 367 f_acl(PLAN *plan __unused, FTSENT *entry) 368 { 369 acl_t facl; 370 acl_type_t acl_type; 371 int acl_supported = 0, ret, trivial; 372 373 if (S_ISLNK(entry->fts_statp->st_mode)) 374 return 0; 375 ret = pathconf(entry->fts_accpath, _PC_ACL_NFS4); 376 if (ret > 0) { 377 acl_supported = 1; 378 acl_type = ACL_TYPE_NFS4; 379 } else if (ret < 0 && errno != EINVAL) { 380 warn("%s", entry->fts_accpath); 381 return (0); 382 } 383 if (acl_supported == 0) { 384 ret = pathconf(entry->fts_accpath, _PC_ACL_EXTENDED); 385 if (ret > 0) { 386 acl_supported = 1; 387 acl_type = ACL_TYPE_ACCESS; 388 } else if (ret < 0 && errno != EINVAL) { 389 warn("%s", entry->fts_accpath); 390 return (0); 391 } 392 } 393 if (acl_supported == 0) 394 return (0); 395 396 facl = acl_get_file(entry->fts_accpath, acl_type); 397 if (facl == NULL) { 398 warn("%s", entry->fts_accpath); 399 return (0); 400 } 401 ret = acl_is_trivial_np(facl, &trivial); 402 acl_free(facl); 403 if (ret) { 404 warn("%s", entry->fts_accpath); 405 acl_free(facl); 406 return (0); 407 } 408 if (trivial) 409 return (0); 410 return (1); 411 } 412 413 PLAN * 414 c_acl(OPTION *option, char ***argvp __unused) 415 { 416 ftsoptions &= ~FTS_NOSTAT; 417 return (palloc(option)); 418 } 419 420 /* 421 * -delete functions -- 422 * 423 * True always. Makes its best shot and continues on regardless. 424 */ 425 int 426 f_delete(PLAN *plan __unused, FTSENT *entry) 427 { 428 /* ignore these from fts */ 429 if (strcmp(entry->fts_accpath, ".") == 0 || 430 strcmp(entry->fts_accpath, "..") == 0) 431 return 1; 432 433 /* sanity check */ 434 if (isdepth == 0 || /* depth off */ 435 (ftsoptions & FTS_NOSTAT)) /* not stat()ing */ 436 errx(1, "-delete: insecure options got turned on"); 437 438 if (!(ftsoptions & FTS_PHYSICAL) || /* physical off */ 439 (ftsoptions & FTS_LOGICAL)) /* or finally, logical on */ 440 errx(1, "-delete: forbidden when symlinks are followed"); 441 442 /* Potentially unsafe - do not accept relative paths whatsoever */ 443 if (strchr(entry->fts_accpath, '/') != NULL) 444 errx(1, "-delete: %s: relative path potentially not safe", 445 entry->fts_accpath); 446 447 /* Turn off user immutable bits if running as root */ 448 if ((entry->fts_statp->st_flags & (UF_APPEND|UF_IMMUTABLE)) && 449 !(entry->fts_statp->st_flags & (SF_APPEND|SF_IMMUTABLE)) && 450 geteuid() == 0) 451 lchflags(entry->fts_accpath, 452 entry->fts_statp->st_flags &= ~(UF_APPEND|UF_IMMUTABLE)); 453 454 /* rmdir directories, unlink everything else */ 455 if (S_ISDIR(entry->fts_statp->st_mode)) { 456 if (rmdir(entry->fts_accpath) < 0 && errno != ENOTEMPTY) 457 warn("-delete: rmdir(%s)", entry->fts_path); 458 } else { 459 if (unlink(entry->fts_accpath) < 0) 460 warn("-delete: unlink(%s)", entry->fts_path); 461 } 462 463 /* "succeed" */ 464 return 1; 465 } 466 467 PLAN * 468 c_delete(OPTION *option, char ***argvp __unused) 469 { 470 471 ftsoptions &= ~FTS_NOSTAT; /* no optimise */ 472 isoutput = 1; /* possible output */ 473 isdepth = 1; /* -depth implied */ 474 475 return palloc(option); 476 } 477 478 479 /* 480 * always_true -- 481 * 482 * Always true, used for -maxdepth, -mindepth, -xdev, -follow, and -true 483 */ 484 int 485 f_always_true(PLAN *plan __unused, FTSENT *entry __unused) 486 { 487 return 1; 488 } 489 490 /* 491 * -depth functions -- 492 * 493 * With argument: True if the file is at level n. 494 * Without argument: Always true, causes descent of the directory hierarchy 495 * to be done so that all entries in a directory are acted on before the 496 * directory itself. 497 */ 498 int 499 f_depth(PLAN *plan, FTSENT *entry) 500 { 501 if (plan->flags & F_DEPTH) 502 COMPARE(entry->fts_level, plan->d_data); 503 else 504 return 1; 505 } 506 507 PLAN * 508 c_depth(OPTION *option, char ***argvp) 509 { 510 PLAN *new; 511 char *str; 512 513 new = palloc(option); 514 515 str = **argvp; 516 if (str && !(new->flags & F_DEPTH)) { 517 /* skip leading + or - */ 518 if (*str == '+' || *str == '-') 519 str++; 520 /* skip sign */ 521 if (*str == '+' || *str == '-') 522 str++; 523 if (isdigit(*str)) 524 new->flags |= F_DEPTH; 525 } 526 527 if (new->flags & F_DEPTH) { /* -depth n */ 528 char *ndepth; 529 530 ndepth = nextarg(option, argvp); 531 new->d_data = find_parsenum(new, option->name, ndepth, NULL); 532 } else { /* -d */ 533 isdepth = 1; 534 } 535 536 return new; 537 } 538 539 /* 540 * -empty functions -- 541 * 542 * True if the file or directory is empty 543 */ 544 int 545 f_empty(PLAN *plan __unused, FTSENT *entry) 546 { 547 if (S_ISREG(entry->fts_statp->st_mode) && 548 entry->fts_statp->st_size == 0) 549 return 1; 550 if (S_ISDIR(entry->fts_statp->st_mode)) { 551 struct dirent *dp; 552 int empty; 553 DIR *dir; 554 555 empty = 1; 556 dir = opendir(entry->fts_accpath); 557 if (dir == NULL) 558 return 0; 559 for (dp = readdir(dir); dp; dp = readdir(dir)) 560 if (dp->d_name[0] != '.' || 561 (dp->d_name[1] != '\0' && 562 (dp->d_name[1] != '.' || dp->d_name[2] != '\0'))) { 563 empty = 0; 564 break; 565 } 566 closedir(dir); 567 return empty; 568 } 569 return 0; 570 } 571 572 PLAN * 573 c_empty(OPTION *option, char ***argvp __unused) 574 { 575 ftsoptions &= ~FTS_NOSTAT; 576 577 return palloc(option); 578 } 579 580 /* 581 * [-exec | -execdir | -ok] utility [arg ... ] ; functions -- 582 * 583 * True if the executed utility returns a zero value as exit status. 584 * The end of the primary expression is delimited by a semicolon. If 585 * "{}" occurs anywhere, it gets replaced by the current pathname, 586 * or, in the case of -execdir, the current basename (filename 587 * without leading directory prefix). For -exec and -ok, 588 * the current directory for the execution of utility is the same as 589 * the current directory when the find utility was started, whereas 590 * for -execdir, it is the directory the file resides in. 591 * 592 * The primary -ok differs from -exec in that it requests affirmation 593 * of the user before executing the utility. 594 */ 595 int 596 f_exec(PLAN *plan, FTSENT *entry) 597 { 598 int cnt; 599 pid_t pid; 600 int status; 601 char *file; 602 603 if (entry == NULL && plan->flags & F_EXECPLUS) { 604 if (plan->e_ppos == plan->e_pbnum) 605 return (1); 606 plan->e_argv[plan->e_ppos] = NULL; 607 goto doexec; 608 } 609 610 /* XXX - if file/dir ends in '/' this will not work -- can it? */ 611 if ((plan->flags & F_EXECDIR) && \ 612 (file = strrchr(entry->fts_path, '/'))) 613 file++; 614 else 615 file = entry->fts_path; 616 617 if (plan->flags & F_EXECPLUS) { 618 if ((plan->e_argv[plan->e_ppos] = strdup(file)) == NULL) 619 err(1, NULL); 620 plan->e_len[plan->e_ppos] = strlen(file); 621 plan->e_psize += plan->e_len[plan->e_ppos]; 622 if (++plan->e_ppos < plan->e_pnummax && 623 plan->e_psize < plan->e_psizemax) 624 return (1); 625 plan->e_argv[plan->e_ppos] = NULL; 626 } else { 627 for (cnt = 0; plan->e_argv[cnt]; ++cnt) 628 if (plan->e_len[cnt]) 629 brace_subst(plan->e_orig[cnt], 630 &plan->e_argv[cnt], file, 631 plan->e_len[cnt]); 632 } 633 634 doexec: if ((plan->flags & F_NEEDOK) && !queryuser(plan->e_argv)) 635 return 0; 636 637 /* make sure find output is interspersed correctly with subprocesses */ 638 fflush(stdout); 639 fflush(stderr); 640 641 switch (pid = fork()) { 642 case -1: 643 err(1, "fork"); 644 /* NOTREACHED */ 645 case 0: 646 /* change dir back from where we started */ 647 if (!(plan->flags & F_EXECDIR) && fchdir(dotfd)) { 648 warn("chdir"); 649 _exit(1); 650 } 651 execvp(plan->e_argv[0], plan->e_argv); 652 warn("%s", plan->e_argv[0]); 653 _exit(1); 654 } 655 if (plan->flags & F_EXECPLUS) { 656 while (--plan->e_ppos >= plan->e_pbnum) 657 free(plan->e_argv[plan->e_ppos]); 658 plan->e_ppos = plan->e_pbnum; 659 plan->e_psize = plan->e_pbsize; 660 } 661 pid = waitpid(pid, &status, 0); 662 return (pid != -1 && WIFEXITED(status) && !WEXITSTATUS(status)); 663 } 664 665 /* 666 * c_exec, c_execdir, c_ok -- 667 * build three parallel arrays, one with pointers to the strings passed 668 * on the command line, one with (possibly duplicated) pointers to the 669 * argv array, and one with integer values that are lengths of the 670 * strings, but also flags meaning that the string has to be massaged. 671 */ 672 PLAN * 673 c_exec(OPTION *option, char ***argvp) 674 { 675 PLAN *new; /* node returned */ 676 long argmax; 677 int cnt, i; 678 char **argv, **ap, **ep, *p; 679 680 /* XXX - was in c_execdir, but seems unnecessary!? 681 ftsoptions &= ~FTS_NOSTAT; 682 */ 683 isoutput = 1; 684 685 /* XXX - this is a change from the previous coding */ 686 new = palloc(option); 687 688 for (ap = argv = *argvp;; ++ap) { 689 if (!*ap) 690 errx(1, 691 "%s: no terminating \";\" or \"+\"", option->name); 692 if (**ap == ';') 693 break; 694 if (**ap == '+' && ap != argv && strcmp(*(ap - 1), "{}") == 0) { 695 new->flags |= F_EXECPLUS; 696 break; 697 } 698 } 699 700 if (ap == argv) 701 errx(1, "%s: no command specified", option->name); 702 703 cnt = ap - *argvp + 1; 704 if (new->flags & F_EXECPLUS) { 705 new->e_ppos = new->e_pbnum = cnt - 2; 706 if ((argmax = sysconf(_SC_ARG_MAX)) == -1) { 707 warn("sysconf(_SC_ARG_MAX)"); 708 argmax = _POSIX_ARG_MAX; 709 } 710 argmax -= 1024; 711 for (ep = environ; *ep != NULL; ep++) 712 argmax -= strlen(*ep) + 1 + sizeof(*ep); 713 argmax -= 1 + sizeof(*ep); 714 new->e_pnummax = argmax / 16; 715 argmax -= sizeof(char *) * new->e_pnummax; 716 if (argmax <= 0) 717 errx(1, "no space for arguments"); 718 new->e_psizemax = argmax; 719 new->e_pbsize = 0; 720 cnt += new->e_pnummax + 1; 721 new->e_next = lastexecplus; 722 lastexecplus = new; 723 } 724 if ((new->e_argv = malloc(cnt * sizeof(char *))) == NULL) 725 err(1, NULL); 726 if ((new->e_orig = malloc(cnt * sizeof(char *))) == NULL) 727 err(1, NULL); 728 if ((new->e_len = malloc(cnt * sizeof(int))) == NULL) 729 err(1, NULL); 730 731 for (argv = *argvp, cnt = 0; argv < ap; ++argv, ++cnt) { 732 new->e_orig[cnt] = *argv; 733 if (new->flags & F_EXECPLUS) 734 new->e_pbsize += strlen(*argv) + 1; 735 for (p = *argv; *p; ++p) 736 if (!(new->flags & F_EXECPLUS) && p[0] == '{' && 737 p[1] == '}') { 738 if ((new->e_argv[cnt] = 739 malloc(MAXPATHLEN)) == NULL) 740 err(1, NULL); 741 new->e_len[cnt] = MAXPATHLEN; 742 break; 743 } 744 if (!*p) { 745 new->e_argv[cnt] = *argv; 746 new->e_len[cnt] = 0; 747 } 748 } 749 if (new->flags & F_EXECPLUS) { 750 new->e_psize = new->e_pbsize; 751 cnt--; 752 for (i = 0; i < new->e_pnummax; i++) { 753 new->e_argv[cnt] = NULL; 754 new->e_len[cnt] = 0; 755 cnt++; 756 } 757 argv = ap; 758 goto done; 759 } 760 new->e_argv[cnt] = new->e_orig[cnt] = NULL; 761 762 done: *argvp = argv + 1; 763 return new; 764 } 765 766 /* Finish any pending -exec ... {} + functions. */ 767 void 768 finish_execplus(void) 769 { 770 PLAN *p; 771 772 p = lastexecplus; 773 while (p != NULL) { 774 (p->execute)(p, NULL); 775 p = p->e_next; 776 } 777 } 778 779 int 780 f_flags(PLAN *plan, FTSENT *entry) 781 { 782 u_long flags; 783 784 flags = entry->fts_statp->st_flags; 785 if (plan->flags & F_ATLEAST) 786 return (flags | plan->fl_flags) == flags && 787 !(flags & plan->fl_notflags); 788 else if (plan->flags & F_ANY) 789 return (flags & plan->fl_flags) || 790 (flags | plan->fl_notflags) != flags; 791 else 792 return flags == plan->fl_flags && 793 !(plan->fl_flags & plan->fl_notflags); 794 } 795 796 PLAN * 797 c_flags(OPTION *option, char ***argvp) 798 { 799 char *flags_str; 800 PLAN *new; 801 u_long flags, notflags; 802 803 flags_str = nextarg(option, argvp); 804 ftsoptions &= ~FTS_NOSTAT; 805 806 new = palloc(option); 807 808 if (*flags_str == '-') { 809 new->flags |= F_ATLEAST; 810 flags_str++; 811 } else if (*flags_str == '+') { 812 new->flags |= F_ANY; 813 flags_str++; 814 } 815 if (strtofflags(&flags_str, &flags, ¬flags) == 1) 816 errx(1, "%s: %s: illegal flags string", option->name, flags_str); 817 818 new->fl_flags = flags; 819 new->fl_notflags = notflags; 820 return new; 821 } 822 823 /* 824 * -follow functions -- 825 * 826 * Always true, causes symbolic links to be followed on a global 827 * basis. 828 */ 829 PLAN * 830 c_follow(OPTION *option, char ***argvp __unused) 831 { 832 ftsoptions &= ~FTS_PHYSICAL; 833 ftsoptions |= FTS_LOGICAL; 834 835 return palloc(option); 836 } 837 838 /* 839 * -fstype functions -- 840 * 841 * True if the file is of a certain type. 842 */ 843 int 844 f_fstype(PLAN *plan, FTSENT *entry) 845 { 846 static dev_t curdev; /* need a guaranteed illegal dev value */ 847 static int first = 1; 848 struct statfs sb; 849 static int val_flags; 850 static char fstype[sizeof(sb.f_fstypename)]; 851 char *p, save[2] = {0,0}; 852 853 if ((plan->flags & F_MTMASK) == F_MTUNKNOWN) 854 return 0; 855 856 /* Only check when we cross mount point. */ 857 if (first || curdev != entry->fts_statp->st_dev) { 858 curdev = entry->fts_statp->st_dev; 859 860 /* 861 * Statfs follows symlinks; find wants the link's filesystem, 862 * not where it points. 863 */ 864 if (entry->fts_info == FTS_SL || 865 entry->fts_info == FTS_SLNONE) { 866 if ((p = strrchr(entry->fts_accpath, '/')) != NULL) 867 ++p; 868 else 869 p = entry->fts_accpath; 870 save[0] = p[0]; 871 p[0] = '.'; 872 save[1] = p[1]; 873 p[1] = '\0'; 874 } else 875 p = NULL; 876 877 if (statfs(entry->fts_accpath, &sb)) 878 err(1, "%s", entry->fts_accpath); 879 880 if (p) { 881 p[0] = save[0]; 882 p[1] = save[1]; 883 } 884 885 first = 0; 886 887 /* 888 * Further tests may need both of these values, so 889 * always copy both of them. 890 */ 891 val_flags = sb.f_flags; 892 strlcpy(fstype, sb.f_fstypename, sizeof(fstype)); 893 } 894 switch (plan->flags & F_MTMASK) { 895 case F_MTFLAG: 896 return val_flags & plan->mt_data; 897 case F_MTTYPE: 898 return (strncmp(fstype, plan->c_data, sizeof(fstype)) == 0); 899 default: 900 abort(); 901 } 902 } 903 904 PLAN * 905 c_fstype(OPTION *option, char ***argvp) 906 { 907 char *fsname; 908 PLAN *new; 909 910 fsname = nextarg(option, argvp); 911 ftsoptions &= ~FTS_NOSTAT; 912 913 new = palloc(option); 914 switch (*fsname) { 915 case 'l': 916 if (!strcmp(fsname, "local")) { 917 new->flags |= F_MTFLAG; 918 new->mt_data = MNT_LOCAL; 919 return new; 920 } 921 break; 922 case 'r': 923 if (!strcmp(fsname, "rdonly")) { 924 new->flags |= F_MTFLAG; 925 new->mt_data = MNT_RDONLY; 926 return new; 927 } 928 break; 929 } 930 931 new->flags |= F_MTTYPE; 932 new->c_data = fsname; 933 return new; 934 } 935 936 /* 937 * -group gname functions -- 938 * 939 * True if the file belongs to the group gname. If gname is numeric and 940 * an equivalent of the getgrnam() function does not return a valid group 941 * name, gname is taken as a group ID. 942 */ 943 int 944 f_group(PLAN *plan, FTSENT *entry) 945 { 946 COMPARE(entry->fts_statp->st_gid, plan->g_data); 947 } 948 949 PLAN * 950 c_group(OPTION *option, char ***argvp) 951 { 952 char *gname; 953 PLAN *new; 954 struct group *g; 955 gid_t gid; 956 957 gname = nextarg(option, argvp); 958 ftsoptions &= ~FTS_NOSTAT; 959 960 new = palloc(option); 961 g = getgrnam(gname); 962 if (g == NULL) { 963 char* cp = gname; 964 if (gname[0] == '-' || gname[0] == '+') 965 gname++; 966 gid = atoi(gname); 967 if (gid == 0 && gname[0] != '0') 968 errx(1, "%s: %s: no such group", option->name, gname); 969 gid = find_parsenum(new, option->name, cp, NULL); 970 } else 971 gid = g->gr_gid; 972 973 new->g_data = gid; 974 return new; 975 } 976 977 /* 978 * -inum n functions -- 979 * 980 * True if the file has inode # n. 981 */ 982 int 983 f_inum(PLAN *plan, FTSENT *entry) 984 { 985 COMPARE(entry->fts_statp->st_ino, plan->i_data); 986 } 987 988 PLAN * 989 c_inum(OPTION *option, char ***argvp) 990 { 991 char *inum_str; 992 PLAN *new; 993 994 inum_str = nextarg(option, argvp); 995 ftsoptions &= ~FTS_NOSTAT; 996 997 new = palloc(option); 998 new->i_data = find_parsenum(new, option->name, inum_str, NULL); 999 return new; 1000 } 1001 1002 /* 1003 * -samefile FN 1004 * 1005 * True if the file has the same inode (eg hard link) FN 1006 */ 1007 1008 /* f_samefile is just f_inum */ 1009 PLAN * 1010 c_samefile(OPTION *option, char ***argvp) 1011 { 1012 char *fn; 1013 PLAN *new; 1014 struct stat sb; 1015 1016 fn = nextarg(option, argvp); 1017 ftsoptions &= ~FTS_NOSTAT; 1018 1019 new = palloc(option); 1020 if (stat(fn, &sb)) 1021 err(1, "%s", fn); 1022 new->i_data = sb.st_ino; 1023 return new; 1024 } 1025 1026 /* 1027 * -links n functions -- 1028 * 1029 * True if the file has n links. 1030 */ 1031 int 1032 f_links(PLAN *plan, FTSENT *entry) 1033 { 1034 COMPARE(entry->fts_statp->st_nlink, plan->l_data); 1035 } 1036 1037 PLAN * 1038 c_links(OPTION *option, char ***argvp) 1039 { 1040 char *nlinks; 1041 PLAN *new; 1042 1043 nlinks = nextarg(option, argvp); 1044 ftsoptions &= ~FTS_NOSTAT; 1045 1046 new = palloc(option); 1047 new->l_data = (nlink_t)find_parsenum(new, option->name, nlinks, NULL); 1048 return new; 1049 } 1050 1051 /* 1052 * -ls functions -- 1053 * 1054 * Always true - prints the current entry to stdout in "ls" format. 1055 */ 1056 int 1057 f_ls(PLAN *plan __unused, FTSENT *entry) 1058 { 1059 printlong(entry->fts_path, entry->fts_accpath, entry->fts_statp); 1060 return 1; 1061 } 1062 1063 PLAN * 1064 c_ls(OPTION *option, char ***argvp __unused) 1065 { 1066 ftsoptions &= ~FTS_NOSTAT; 1067 isoutput = 1; 1068 1069 return palloc(option); 1070 } 1071 1072 /* 1073 * -name functions -- 1074 * 1075 * True if the basename of the filename being examined 1076 * matches pattern using Pattern Matching Notation S3.14 1077 */ 1078 int 1079 f_name(PLAN *plan, FTSENT *entry) 1080 { 1081 char fn[PATH_MAX]; 1082 const char *name; 1083 1084 if (plan->flags & F_LINK) { 1085 name = fn; 1086 if (readlink(entry->fts_path, fn, sizeof(fn)) == -1) 1087 return 0; 1088 } else 1089 name = entry->fts_name; 1090 return !fnmatch(plan->c_data, name, 1091 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 1092 } 1093 1094 PLAN * 1095 c_name(OPTION *option, char ***argvp) 1096 { 1097 char *pattern; 1098 PLAN *new; 1099 1100 pattern = nextarg(option, argvp); 1101 new = palloc(option); 1102 new->c_data = pattern; 1103 return new; 1104 } 1105 1106 /* 1107 * -newer file functions -- 1108 * 1109 * True if the current file has been modified more recently 1110 * then the modification time of the file named by the pathname 1111 * file. 1112 */ 1113 int 1114 f_newer(PLAN *plan, FTSENT *entry) 1115 { 1116 if (plan->flags & F_TIME_C) 1117 return entry->fts_statp->st_ctime > plan->t_data; 1118 else if (plan->flags & F_TIME_A) 1119 return entry->fts_statp->st_atime > plan->t_data; 1120 else if (plan->flags & F_TIME_B) 1121 return entry->fts_statp->st_birthtime > plan->t_data; 1122 else 1123 return entry->fts_statp->st_mtime > plan->t_data; 1124 } 1125 1126 PLAN * 1127 c_newer(OPTION *option, char ***argvp) 1128 { 1129 char *fn_or_tspec; 1130 PLAN *new; 1131 struct stat sb; 1132 1133 fn_or_tspec = nextarg(option, argvp); 1134 ftsoptions &= ~FTS_NOSTAT; 1135 1136 new = palloc(option); 1137 /* compare against what */ 1138 if (option->flags & F_TIME2_T) { 1139 new->t_data = get_date(fn_or_tspec); 1140 if (new->t_data == (time_t) -1) 1141 errx(1, "Can't parse date/time: %s", fn_or_tspec); 1142 } else { 1143 if (stat(fn_or_tspec, &sb)) 1144 err(1, "%s", fn_or_tspec); 1145 if (option->flags & F_TIME2_C) 1146 new->t_data = sb.st_ctime; 1147 else if (option->flags & F_TIME2_A) 1148 new->t_data = sb.st_atime; 1149 else if (option->flags & F_TIME2_B) 1150 new->t_data = sb.st_birthtime; 1151 else 1152 new->t_data = sb.st_mtime; 1153 } 1154 return new; 1155 } 1156 1157 /* 1158 * -nogroup functions -- 1159 * 1160 * True if file belongs to a user ID for which the equivalent 1161 * of the getgrnam() 9.2.1 [POSIX.1] function returns NULL. 1162 */ 1163 int 1164 f_nogroup(PLAN *plan __unused, FTSENT *entry) 1165 { 1166 return group_from_gid(entry->fts_statp->st_gid, 1) == NULL; 1167 } 1168 1169 PLAN * 1170 c_nogroup(OPTION *option, char ***argvp __unused) 1171 { 1172 ftsoptions &= ~FTS_NOSTAT; 1173 1174 return palloc(option); 1175 } 1176 1177 /* 1178 * -nouser functions -- 1179 * 1180 * True if file belongs to a user ID for which the equivalent 1181 * of the getpwuid() 9.2.2 [POSIX.1] function returns NULL. 1182 */ 1183 int 1184 f_nouser(PLAN *plan __unused, FTSENT *entry) 1185 { 1186 return user_from_uid(entry->fts_statp->st_uid, 1) == NULL; 1187 } 1188 1189 PLAN * 1190 c_nouser(OPTION *option, char ***argvp __unused) 1191 { 1192 ftsoptions &= ~FTS_NOSTAT; 1193 1194 return palloc(option); 1195 } 1196 1197 /* 1198 * -path functions -- 1199 * 1200 * True if the path of the filename being examined 1201 * matches pattern using Pattern Matching Notation S3.14 1202 */ 1203 int 1204 f_path(PLAN *plan, FTSENT *entry) 1205 { 1206 return !fnmatch(plan->c_data, entry->fts_path, 1207 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 1208 } 1209 1210 /* c_path is the same as c_name */ 1211 1212 /* 1213 * -perm functions -- 1214 * 1215 * The mode argument is used to represent file mode bits. If it starts 1216 * with a leading digit, it's treated as an octal mode, otherwise as a 1217 * symbolic mode. 1218 */ 1219 int 1220 f_perm(PLAN *plan, FTSENT *entry) 1221 { 1222 mode_t mode; 1223 1224 mode = entry->fts_statp->st_mode & 1225 (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO); 1226 if (plan->flags & F_ATLEAST) 1227 return (plan->m_data | mode) == mode; 1228 else if (plan->flags & F_ANY) 1229 return (mode & plan->m_data); 1230 else 1231 return mode == plan->m_data; 1232 /* NOTREACHED */ 1233 } 1234 1235 PLAN * 1236 c_perm(OPTION *option, char ***argvp) 1237 { 1238 char *perm; 1239 PLAN *new; 1240 mode_t *set; 1241 1242 perm = nextarg(option, argvp); 1243 ftsoptions &= ~FTS_NOSTAT; 1244 1245 new = palloc(option); 1246 1247 if (*perm == '-') { 1248 new->flags |= F_ATLEAST; 1249 ++perm; 1250 } else if (*perm == '+') { 1251 new->flags |= F_ANY; 1252 ++perm; 1253 } 1254 1255 if ((set = setmode(perm)) == NULL) 1256 errx(1, "%s: %s: illegal mode string", option->name, perm); 1257 1258 new->m_data = getmode(set, 0); 1259 free(set); 1260 return new; 1261 } 1262 1263 /* 1264 * -print functions -- 1265 * 1266 * Always true, causes the current pathname to be written to 1267 * standard output. 1268 */ 1269 int 1270 f_print(PLAN *plan __unused, FTSENT *entry) 1271 { 1272 (void)puts(entry->fts_path); 1273 return 1; 1274 } 1275 1276 PLAN * 1277 c_print(OPTION *option, char ***argvp __unused) 1278 { 1279 isoutput = 1; 1280 1281 return palloc(option); 1282 } 1283 1284 /* 1285 * -print0 functions -- 1286 * 1287 * Always true, causes the current pathname to be written to 1288 * standard output followed by a NUL character 1289 */ 1290 int 1291 f_print0(PLAN *plan __unused, FTSENT *entry) 1292 { 1293 fputs(entry->fts_path, stdout); 1294 fputc('\0', stdout); 1295 return 1; 1296 } 1297 1298 /* c_print0 is the same as c_print */ 1299 1300 /* 1301 * -prune functions -- 1302 * 1303 * Prune a portion of the hierarchy. 1304 */ 1305 int 1306 f_prune(PLAN *plan __unused, FTSENT *entry) 1307 { 1308 if (fts_set(tree, entry, FTS_SKIP)) 1309 err(1, "%s", entry->fts_path); 1310 return 1; 1311 } 1312 1313 /* c_prune == c_simple */ 1314 1315 /* 1316 * -regex functions -- 1317 * 1318 * True if the whole path of the file matches pattern using 1319 * regular expression. 1320 */ 1321 int 1322 f_regex(PLAN *plan, FTSENT *entry) 1323 { 1324 char *str; 1325 int len; 1326 regex_t *pre; 1327 regmatch_t pmatch; 1328 int errcode; 1329 char errbuf[LINE_MAX]; 1330 int matched; 1331 1332 pre = plan->re_data; 1333 str = entry->fts_path; 1334 len = strlen(str); 1335 matched = 0; 1336 1337 pmatch.rm_so = 0; 1338 pmatch.rm_eo = len; 1339 1340 errcode = regexec(pre, str, 1, &pmatch, REG_STARTEND); 1341 1342 if (errcode != 0 && errcode != REG_NOMATCH) { 1343 regerror(errcode, pre, errbuf, sizeof errbuf); 1344 errx(1, "%s: %s", 1345 plan->flags & F_IGNCASE ? "-iregex" : "-regex", errbuf); 1346 } 1347 1348 if (errcode == 0 && pmatch.rm_so == 0 && pmatch.rm_eo == len) 1349 matched = 1; 1350 1351 return matched; 1352 } 1353 1354 PLAN * 1355 c_regex(OPTION *option, char ***argvp) 1356 { 1357 PLAN *new; 1358 char *pattern; 1359 regex_t *pre; 1360 int errcode; 1361 char errbuf[LINE_MAX]; 1362 1363 if ((pre = malloc(sizeof(regex_t))) == NULL) 1364 err(1, NULL); 1365 1366 pattern = nextarg(option, argvp); 1367 1368 if ((errcode = regcomp(pre, pattern, 1369 regexp_flags | (option->flags & F_IGNCASE ? REG_ICASE : 0))) != 0) { 1370 regerror(errcode, pre, errbuf, sizeof errbuf); 1371 errx(1, "%s: %s: %s", 1372 option->flags & F_IGNCASE ? "-iregex" : "-regex", 1373 pattern, errbuf); 1374 } 1375 1376 new = palloc(option); 1377 new->re_data = pre; 1378 1379 return new; 1380 } 1381 1382 /* c_simple covers c_prune, c_openparen, c_closeparen, c_not, c_or, c_true, c_false */ 1383 1384 PLAN * 1385 c_simple(OPTION *option, char ***argvp __unused) 1386 { 1387 return palloc(option); 1388 } 1389 1390 /* 1391 * -size n[c] functions -- 1392 * 1393 * True if the file size in bytes, divided by an implementation defined 1394 * value and rounded up to the next integer, is n. If n is followed by 1395 * one of c k M G T P, the size is in bytes, kilobytes, 1396 * megabytes, gigabytes, terabytes or petabytes respectively. 1397 */ 1398 #define FIND_SIZE 512 1399 static int divsize = 1; 1400 1401 int 1402 f_size(PLAN *plan, FTSENT *entry) 1403 { 1404 off_t size; 1405 1406 size = divsize ? (entry->fts_statp->st_size + FIND_SIZE - 1) / 1407 FIND_SIZE : entry->fts_statp->st_size; 1408 COMPARE(size, plan->o_data); 1409 } 1410 1411 PLAN * 1412 c_size(OPTION *option, char ***argvp) 1413 { 1414 char *size_str; 1415 PLAN *new; 1416 char endch; 1417 off_t scale; 1418 1419 size_str = nextarg(option, argvp); 1420 ftsoptions &= ~FTS_NOSTAT; 1421 1422 new = palloc(option); 1423 endch = 'c'; 1424 new->o_data = find_parsenum(new, option->name, size_str, &endch); 1425 if (endch != '\0') { 1426 divsize = 0; 1427 1428 switch (endch) { 1429 case 'c': /* characters */ 1430 scale = 0x1LL; 1431 break; 1432 case 'k': /* kilobytes 1<<10 */ 1433 scale = 0x400LL; 1434 break; 1435 case 'M': /* megabytes 1<<20 */ 1436 scale = 0x100000LL; 1437 break; 1438 case 'G': /* gigabytes 1<<30 */ 1439 scale = 0x40000000LL; 1440 break; 1441 case 'T': /* terabytes 1<<40 */ 1442 scale = 0x1000000000LL; 1443 break; 1444 case 'P': /* petabytes 1<<50 */ 1445 scale = 0x4000000000000LL; 1446 break; 1447 default: 1448 errx(1, "%s: %s: illegal trailing character", 1449 option->name, size_str); 1450 break; 1451 } 1452 if (new->o_data > QUAD_MAX / scale) 1453 errx(1, "%s: %s: value too large", 1454 option->name, size_str); 1455 new->o_data *= scale; 1456 } 1457 return new; 1458 } 1459 1460 /* 1461 * -type c functions -- 1462 * 1463 * True if the type of the file is c, where c is b, c, d, p, f or w 1464 * for block special file, character special file, directory, FIFO, 1465 * regular file or whiteout respectively. 1466 */ 1467 int 1468 f_type(PLAN *plan, FTSENT *entry) 1469 { 1470 return (entry->fts_statp->st_mode & S_IFMT) == plan->m_data; 1471 } 1472 1473 PLAN * 1474 c_type(OPTION *option, char ***argvp) 1475 { 1476 char *typestring; 1477 PLAN *new; 1478 mode_t mask; 1479 1480 typestring = nextarg(option, argvp); 1481 ftsoptions &= ~FTS_NOSTAT; 1482 1483 switch (typestring[0]) { 1484 case 'b': 1485 mask = S_IFBLK; 1486 break; 1487 case 'c': 1488 mask = S_IFCHR; 1489 break; 1490 case 'd': 1491 mask = S_IFDIR; 1492 break; 1493 case 'f': 1494 mask = S_IFREG; 1495 break; 1496 case 'l': 1497 mask = S_IFLNK; 1498 break; 1499 case 'p': 1500 mask = S_IFIFO; 1501 break; 1502 case 's': 1503 mask = S_IFSOCK; 1504 break; 1505 #ifdef FTS_WHITEOUT 1506 case 'w': 1507 mask = S_IFWHT; 1508 ftsoptions |= FTS_WHITEOUT; 1509 break; 1510 #endif /* FTS_WHITEOUT */ 1511 default: 1512 errx(1, "%s: %s: unknown type", option->name, typestring); 1513 } 1514 1515 new = palloc(option); 1516 new->m_data = mask; 1517 return new; 1518 } 1519 1520 /* 1521 * -user uname functions -- 1522 * 1523 * True if the file belongs to the user uname. If uname is numeric and 1524 * an equivalent of the getpwnam() S9.2.2 [POSIX.1] function does not 1525 * return a valid user name, uname is taken as a user ID. 1526 */ 1527 int 1528 f_user(PLAN *plan, FTSENT *entry) 1529 { 1530 COMPARE(entry->fts_statp->st_uid, plan->u_data); 1531 } 1532 1533 PLAN * 1534 c_user(OPTION *option, char ***argvp) 1535 { 1536 char *username; 1537 PLAN *new; 1538 struct passwd *p; 1539 uid_t uid; 1540 1541 username = nextarg(option, argvp); 1542 ftsoptions &= ~FTS_NOSTAT; 1543 1544 new = palloc(option); 1545 p = getpwnam(username); 1546 if (p == NULL) { 1547 char* cp = username; 1548 if( username[0] == '-' || username[0] == '+' ) 1549 username++; 1550 uid = atoi(username); 1551 if (uid == 0 && username[0] != '0') 1552 errx(1, "%s: %s: no such user", option->name, username); 1553 uid = find_parsenum(new, option->name, cp, NULL); 1554 } else 1555 uid = p->pw_uid; 1556 1557 new->u_data = uid; 1558 return new; 1559 } 1560 1561 /* 1562 * -xdev functions -- 1563 * 1564 * Always true, causes find not to descend past directories that have a 1565 * different device ID (st_dev, see stat() S5.6.2 [POSIX.1]) 1566 */ 1567 PLAN * 1568 c_xdev(OPTION *option, char ***argvp __unused) 1569 { 1570 ftsoptions |= FTS_XDEV; 1571 1572 return palloc(option); 1573 } 1574 1575 /* 1576 * ( expression ) functions -- 1577 * 1578 * True if expression is true. 1579 */ 1580 int 1581 f_expr(PLAN *plan, FTSENT *entry) 1582 { 1583 PLAN *p; 1584 int state = 0; 1585 1586 for (p = plan->p_data[0]; 1587 p && (state = (p->execute)(p, entry)); p = p->next); 1588 return state; 1589 } 1590 1591 /* 1592 * f_openparen and f_closeparen nodes are temporary place markers. They are 1593 * eliminated during phase 2 of find_formplan() --- the '(' node is converted 1594 * to a f_expr node containing the expression and the ')' node is discarded. 1595 * The functions themselves are only used as constants. 1596 */ 1597 1598 int 1599 f_openparen(PLAN *plan __unused, FTSENT *entry __unused) 1600 { 1601 abort(); 1602 } 1603 1604 int 1605 f_closeparen(PLAN *plan __unused, FTSENT *entry __unused) 1606 { 1607 abort(); 1608 } 1609 1610 /* c_openparen == c_simple */ 1611 /* c_closeparen == c_simple */ 1612 1613 /* 1614 * AND operator. Since AND is implicit, no node is allocated. 1615 */ 1616 PLAN * 1617 c_and(OPTION *option __unused, char ***argvp __unused) 1618 { 1619 return NULL; 1620 } 1621 1622 /* 1623 * ! expression functions -- 1624 * 1625 * Negation of a primary; the unary NOT operator. 1626 */ 1627 int 1628 f_not(PLAN *plan, FTSENT *entry) 1629 { 1630 PLAN *p; 1631 int state = 0; 1632 1633 for (p = plan->p_data[0]; 1634 p && (state = (p->execute)(p, entry)); p = p->next); 1635 return !state; 1636 } 1637 1638 /* c_not == c_simple */ 1639 1640 /* 1641 * expression -o expression functions -- 1642 * 1643 * Alternation of primaries; the OR operator. The second expression is 1644 * not evaluated if the first expression is true. 1645 */ 1646 int 1647 f_or(PLAN *plan, FTSENT *entry) 1648 { 1649 PLAN *p; 1650 int state = 0; 1651 1652 for (p = plan->p_data[0]; 1653 p && (state = (p->execute)(p, entry)); p = p->next); 1654 1655 if (state) 1656 return 1; 1657 1658 for (p = plan->p_data[1]; 1659 p && (state = (p->execute)(p, entry)); p = p->next); 1660 return state; 1661 } 1662 1663 /* c_or == c_simple */ 1664 1665 /* 1666 * -false 1667 * 1668 * Always false. 1669 */ 1670 int 1671 f_false(PLAN *plan __unused, FTSENT *entry __unused) 1672 { 1673 return 0; 1674 } 1675 1676 /* c_false == c_simple */ 1677 1678 /* 1679 * -quit 1680 * 1681 * Exits the program 1682 */ 1683 int 1684 f_quit(PLAN *plan __unused, FTSENT *entry __unused) 1685 { 1686 exit(0); 1687 } 1688 1689 /* c_quit == c_simple */ 1690