1 /* $NetBSD: function.c,v 1.43 2003/01/30 10:49:05 jhawk Exp $ */ 2 3 /*- 4 * Copyright (c) 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 * Cimarron D. Taylor of the University of California, Berkeley. 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "from: @(#)function.c 8.10 (Berkeley) 5/4/95"; 43 #else 44 __RCSID("$NetBSD: function.c,v 1.43 2003/01/30 10:49:05 jhawk Exp $"); 45 #endif 46 #endif /* not lint */ 47 48 #include <sys/param.h> 49 #include <sys/stat.h> 50 #include <sys/wait.h> 51 #include <sys/mount.h> 52 53 #include <dirent.h> 54 #include <err.h> 55 #include <errno.h> 56 #include <fnmatch.h> 57 #include <fts.h> 58 #include <grp.h> 59 #include <inttypes.h> 60 #include <pwd.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <string.h> 64 #include <tzfile.h> 65 #include <unistd.h> 66 67 #include "find.h" 68 #include "stat_flags.h" 69 70 #define COMPARE(a, b) { \ 71 switch (plan->flags) { \ 72 case F_EQUAL: \ 73 return (a == b); \ 74 case F_LESSTHAN: \ 75 return (a < b); \ 76 case F_GREATER: \ 77 return (a > b); \ 78 default: \ 79 abort(); \ 80 } \ 81 } 82 83 static int64_t find_parsenum __P((PLAN *, char *, char *, char *)); 84 int f_always_true __P((PLAN *, FTSENT *)); 85 int f_amin __P((PLAN *, FTSENT *)); 86 int f_anewer __P((PLAN *, FTSENT *)); 87 int f_atime __P((PLAN *, FTSENT *)); 88 int f_cmin __P((PLAN *, FTSENT *)); 89 int f_cnewer __P((PLAN *, FTSENT *)); 90 int f_ctime __P((PLAN *, FTSENT *)); 91 int f_empty __P((PLAN *, FTSENT *)); 92 int f_exec __P((PLAN *, FTSENT *)); 93 int f_execdir __P((PLAN *, FTSENT *)); 94 int f_flags __P((PLAN *, FTSENT *)); 95 int f_fstype __P((PLAN *, FTSENT *)); 96 int f_group __P((PLAN *, FTSENT *)); 97 int f_inum __P((PLAN *, FTSENT *)); 98 int f_links __P((PLAN *, FTSENT *)); 99 int f_ls __P((PLAN *, FTSENT *)); 100 int f_mindepth __P((PLAN *, FTSENT *)); 101 int f_maxdepth __P((PLAN *, FTSENT *)); 102 int f_mmin __P((PLAN *, FTSENT *)); 103 int f_mtime __P((PLAN *, FTSENT *)); 104 int f_name __P((PLAN *, FTSENT *)); 105 int f_newer __P((PLAN *, FTSENT *)); 106 int f_nogroup __P((PLAN *, FTSENT *)); 107 int f_nouser __P((PLAN *, FTSENT *)); 108 int f_path __P((PLAN *, FTSENT *)); 109 int f_perm __P((PLAN *, FTSENT *)); 110 int f_print __P((PLAN *, FTSENT *)); 111 int f_print0 __P((PLAN *, FTSENT *)); 112 int f_printx __P((PLAN *, FTSENT *)); 113 int f_prune __P((PLAN *, FTSENT *)); 114 int f_regex __P((PLAN *, FTSENT *)); 115 int f_size __P((PLAN *, FTSENT *)); 116 int f_type __P((PLAN *, FTSENT *)); 117 int f_user __P((PLAN *, FTSENT *)); 118 int f_not __P((PLAN *, FTSENT *)); 119 int f_or __P((PLAN *, FTSENT *)); 120 static PLAN *c_regex_common __P((char ***, int, enum ntype, int)); 121 static PLAN *palloc __P((enum ntype, int (*) __P((PLAN *, FTSENT *)))); 122 123 extern int dotfd; 124 extern FTS *tree; 125 extern time_t now; 126 127 /* 128 * find_parsenum -- 129 * Parse a string of the form [+-]# and return the value. 130 */ 131 static int64_t 132 find_parsenum(plan, option, vp, endch) 133 PLAN *plan; 134 char *option, *vp, *endch; 135 { 136 int64_t value; 137 char *endchar, *str; /* Pointer to character ending conversion. */ 138 139 /* Determine comparison from leading + or -. */ 140 str = vp; 141 switch (*str) { 142 case '+': 143 ++str; 144 plan->flags = F_GREATER; 145 break; 146 case '-': 147 ++str; 148 plan->flags = F_LESSTHAN; 149 break; 150 default: 151 plan->flags = F_EQUAL; 152 break; 153 } 154 155 /* 156 * Convert the string with strtol(). Note, if strtol() returns zero 157 * and endchar points to the beginning of the string we know we have 158 * a syntax error. 159 */ 160 value = strtoq(str, &endchar, 10); 161 if (value == 0 && endchar == str) 162 errx(1, "%s: %s: illegal numeric value", option, vp); 163 if (endchar[0] && (endch == NULL || endchar[0] != *endch)) 164 errx(1, "%s: %s: illegal trailing character", option, vp); 165 if (endch) 166 *endch = endchar[0]; 167 return (value); 168 } 169 170 /* 171 * The value of n for the inode times (atime, ctime, and mtime) is a range, 172 * i.e. n matches from (n - 1) to n 24 hour periods. This interacts with 173 * -n, such that "-mtime -1" would be less than 0 days, which isn't what the 174 * user wanted. Correct so that -1 is "less than 1". 175 */ 176 #define TIME_CORRECT(p, ttype) \ 177 if ((p)->type == ttype && (p)->flags == F_LESSTHAN) \ 178 ++((p)->t_data); 179 180 /* 181 * -amin n functions -- 182 * 183 * True if the difference between the file access time and the 184 * current time is n 1 minute periods. 185 */ 186 int 187 f_amin(plan, entry) 188 PLAN *plan; 189 FTSENT *entry; 190 { 191 COMPARE((now - entry->fts_statp->st_atime + 192 SECSPERMIN - 1) / SECSPERMIN, plan->t_data); 193 } 194 195 PLAN * 196 c_amin(argvp, isok) 197 char ***argvp; 198 int isok; 199 { 200 char *arg = **argvp; 201 PLAN *new; 202 203 (*argvp)++; 204 ftsoptions &= ~FTS_NOSTAT; 205 206 new = palloc(N_AMIN, f_amin); 207 new->t_data = find_parsenum(new, "-amin", arg, NULL); 208 TIME_CORRECT(new, N_AMIN); 209 return (new); 210 } 211 212 /* 213 * -anewer file functions -- 214 * 215 * True if the current file has been accessed more recently 216 * than the access time of the file named by the pathname 217 * file. 218 */ 219 int 220 f_anewer(plan, entry) 221 PLAN *plan; 222 FTSENT *entry; 223 { 224 225 return (entry->fts_statp->st_atime > plan->t_data); 226 } 227 228 PLAN * 229 c_anewer(argvp, isok) 230 char ***argvp; 231 int isok; 232 { 233 char *filename = **argvp; 234 PLAN *new; 235 struct stat sb; 236 237 (*argvp)++; 238 ftsoptions &= ~FTS_NOSTAT; 239 240 if (stat(filename, &sb)) 241 err(1, "%s", filename); 242 new = palloc(N_ANEWER, f_anewer); 243 new->t_data = sb.st_atime; 244 return (new); 245 } 246 247 /* 248 * -atime n functions -- 249 * 250 * True if the difference between the file access time and the 251 * current time is n 24 hour periods. 252 */ 253 int 254 f_atime(plan, entry) 255 PLAN *plan; 256 FTSENT *entry; 257 { 258 COMPARE((now - entry->fts_statp->st_atime + 259 SECSPERDAY - 1) / SECSPERDAY, plan->t_data); 260 } 261 262 PLAN * 263 c_atime(argvp, isok) 264 char ***argvp; 265 int isok; 266 { 267 char *arg = **argvp; 268 PLAN *new; 269 270 (*argvp)++; 271 ftsoptions &= ~FTS_NOSTAT; 272 273 new = palloc(N_ATIME, f_atime); 274 new->t_data = find_parsenum(new, "-atime", arg, NULL); 275 TIME_CORRECT(new, N_ATIME); 276 return (new); 277 } 278 /* 279 * -cmin n functions -- 280 * 281 * True if the difference between the last change of file 282 * status information and the current time is n 24 hour periods. 283 */ 284 int 285 f_cmin(plan, entry) 286 PLAN *plan; 287 FTSENT *entry; 288 { 289 COMPARE((now - entry->fts_statp->st_ctime + 290 SECSPERMIN - 1) / SECSPERMIN, plan->t_data); 291 } 292 293 PLAN * 294 c_cmin(argvp, isok) 295 char ***argvp; 296 int isok; 297 { 298 char *arg = **argvp; 299 PLAN *new; 300 301 (*argvp)++; 302 ftsoptions &= ~FTS_NOSTAT; 303 304 new = palloc(N_CMIN, f_cmin); 305 new->t_data = find_parsenum(new, "-cmin", arg, NULL); 306 TIME_CORRECT(new, N_CMIN); 307 return (new); 308 } 309 310 /* 311 * -cnewer file functions -- 312 * 313 * True if the current file has been changed more recently 314 * than the changed time of the file named by the pathname 315 * file. 316 */ 317 int 318 f_cnewer(plan, entry) 319 PLAN *plan; 320 FTSENT *entry; 321 { 322 323 return (entry->fts_statp->st_ctime > plan->t_data); 324 } 325 326 PLAN * 327 c_cnewer(argvp, isok) 328 char ***argvp; 329 int isok; 330 { 331 char *filename = **argvp; 332 PLAN *new; 333 struct stat sb; 334 335 (*argvp)++; 336 ftsoptions &= ~FTS_NOSTAT; 337 338 if (stat(filename, &sb)) 339 err(1, "%s", filename); 340 new = palloc(N_CNEWER, f_cnewer); 341 new->t_data = sb.st_ctime; 342 return (new); 343 } 344 345 /* 346 * -ctime n functions -- 347 * 348 * True if the difference between the last change of file 349 * status information and the current time is n 24 hour periods. 350 */ 351 int 352 f_ctime(plan, entry) 353 PLAN *plan; 354 FTSENT *entry; 355 { 356 COMPARE((now - entry->fts_statp->st_ctime + 357 SECSPERDAY - 1) / SECSPERDAY, plan->t_data); 358 } 359 360 PLAN * 361 c_ctime(argvp, isok) 362 char ***argvp; 363 int isok; 364 { 365 char *arg = **argvp; 366 PLAN *new; 367 368 (*argvp)++; 369 ftsoptions &= ~FTS_NOSTAT; 370 371 new = palloc(N_CTIME, f_ctime); 372 new->t_data = find_parsenum(new, "-ctime", arg, NULL); 373 TIME_CORRECT(new, N_CTIME); 374 return (new); 375 } 376 377 /* 378 * -depth functions -- 379 * 380 * Always true, causes descent of the directory hierarchy to be done 381 * so that all entries in a directory are acted on before the directory 382 * itself. 383 */ 384 int 385 f_always_true(plan, entry) 386 PLAN *plan; 387 FTSENT *entry; 388 { 389 390 return (1); 391 } 392 393 PLAN * 394 c_depth(argvp, isok) 395 char ***argvp; 396 int isok; 397 { 398 isdepth = 1; 399 400 return (palloc(N_DEPTH, f_always_true)); 401 } 402 403 /* 404 * -empty functions -- 405 * 406 * True if the file or directory is empty 407 */ 408 int 409 f_empty(plan, entry) 410 PLAN *plan; 411 FTSENT *entry; 412 { 413 if (S_ISREG(entry->fts_statp->st_mode) && 414 entry->fts_statp->st_size == 0) 415 return (1); 416 if (S_ISDIR(entry->fts_statp->st_mode)) { 417 struct dirent *dp; 418 int empty; 419 DIR *dir; 420 421 empty = 1; 422 dir = opendir(entry->fts_accpath); 423 if (dir == NULL) 424 err(1, "%s", entry->fts_accpath); 425 for (dp = readdir(dir); dp; dp = readdir(dir)) 426 if (dp->d_name[0] != '.' || 427 (dp->d_name[1] != '\0' && 428 (dp->d_name[1] != '.' || dp->d_name[2] != '\0'))) { 429 empty = 0; 430 break; 431 } 432 closedir(dir); 433 return (empty); 434 } 435 return (0); 436 } 437 438 PLAN * 439 c_empty(argvp, isok) 440 char ***argvp; 441 int isok; 442 { 443 ftsoptions &= ~FTS_NOSTAT; 444 445 return (palloc(N_EMPTY, f_empty)); 446 } 447 448 /* 449 * [-exec | -ok] utility [arg ... ] ; functions -- 450 * 451 * True if the executed utility returns a zero value as exit status. 452 * The end of the primary expression is delimited by a semicolon. If 453 * "{}" occurs anywhere, it gets replaced by the current pathname. 454 * The current directory for the execution of utility is the same as 455 * the current directory when the find utility was started. 456 * 457 * The primary -ok is different in that it requests affirmation of the 458 * user before executing the utility. 459 */ 460 int 461 f_exec(plan, entry) 462 PLAN *plan; 463 FTSENT *entry; 464 { 465 int cnt; 466 pid_t pid; 467 int status; 468 469 for (cnt = 0; plan->e_argv[cnt]; ++cnt) 470 if (plan->e_len[cnt]) 471 brace_subst(plan->e_orig[cnt], &plan->e_argv[cnt], 472 entry->fts_path, &plan->e_len[cnt]); 473 474 if (plan->flags == F_NEEDOK && !queryuser(plan->e_argv)) 475 return (0); 476 477 /* don't mix output of command with find output */ 478 fflush(stdout); 479 fflush(stderr); 480 481 switch (pid = vfork()) { 482 case -1: 483 err(1, "vfork"); 484 /* NOTREACHED */ 485 case 0: 486 if (fchdir(dotfd)) { 487 warn("chdir"); 488 _exit(1); 489 } 490 execvp(plan->e_argv[0], plan->e_argv); 491 warn("%s", plan->e_argv[0]); 492 _exit(1); 493 } 494 pid = waitpid(pid, &status, 0); 495 return (pid != -1 && WIFEXITED(status) && !WEXITSTATUS(status)); 496 } 497 498 /* 499 * c_exec -- 500 * build three parallel arrays, one with pointers to the strings passed 501 * on the command line, one with (possibly duplicated) pointers to the 502 * argv array, and one with integer values that are lengths of the 503 * strings, but also flags meaning that the string has to be massaged. 504 */ 505 PLAN * 506 c_exec(argvp, isok) 507 char ***argvp; 508 int isok; 509 { 510 PLAN *new; /* node returned */ 511 int cnt; 512 char **argv, **ap, *p; 513 514 isoutput = 1; 515 516 new = palloc(N_EXEC, f_exec); 517 if (isok) 518 new->flags = F_NEEDOK; 519 520 for (ap = argv = *argvp;; ++ap) { 521 if (!*ap) 522 errx(1, 523 "%s: no terminating \";\"", isok ? "-ok" : "-exec"); 524 if (**ap == ';') 525 break; 526 } 527 528 cnt = ap - *argvp + 1; 529 new->e_argv = (char **)emalloc((u_int)cnt * sizeof(char *)); 530 new->e_orig = (char **)emalloc((u_int)cnt * sizeof(char *)); 531 new->e_len = (int *)emalloc((u_int)cnt * sizeof(int)); 532 533 for (argv = *argvp, cnt = 0; argv < ap; ++argv, ++cnt) { 534 new->e_orig[cnt] = *argv; 535 for (p = *argv; *p; ++p) 536 if (p[0] == '{' && p[1] == '}') { 537 new->e_argv[cnt] = emalloc((u_int)MAXPATHLEN); 538 new->e_len[cnt] = MAXPATHLEN; 539 break; 540 } 541 if (!*p) { 542 new->e_argv[cnt] = *argv; 543 new->e_len[cnt] = 0; 544 } 545 } 546 new->e_argv[cnt] = new->e_orig[cnt] = NULL; 547 548 *argvp = argv + 1; 549 return (new); 550 } 551 552 /* 553 * -execdir utility [arg ... ] ; functions -- 554 * 555 * True if the executed utility returns a zero value as exit status. 556 * The end of the primary expression is delimited by a semicolon. If 557 * "{}" occurs anywhere, it gets replaced by the unqualified pathname. 558 * The current directory for the execution of utility is the same as 559 * the directory where the file lives. 560 */ 561 int 562 f_execdir(plan, entry) 563 PLAN *plan; 564 FTSENT *entry; 565 { 566 int cnt; 567 pid_t pid; 568 int status; 569 char *file; 570 571 /* XXX - if file/dir ends in '/' this will not work -- can it? */ 572 if ((file = strrchr(entry->fts_path, '/'))) 573 file++; 574 else 575 file = entry->fts_path; 576 577 for (cnt = 0; plan->e_argv[cnt]; ++cnt) 578 if (plan->e_len[cnt]) 579 brace_subst(plan->e_orig[cnt], &plan->e_argv[cnt], 580 file, &plan->e_len[cnt]); 581 582 /* don't mix output of command with find output */ 583 fflush(stdout); 584 fflush(stderr); 585 586 switch (pid = vfork()) { 587 case -1: 588 err(1, "fork"); 589 /* NOTREACHED */ 590 case 0: 591 execvp(plan->e_argv[0], plan->e_argv); 592 warn("%s", plan->e_argv[0]); 593 _exit(1); 594 } 595 pid = waitpid(pid, &status, 0); 596 return (pid != -1 && WIFEXITED(status) && !WEXITSTATUS(status)); 597 } 598 599 /* 600 * c_execdir -- 601 * build three parallel arrays, one with pointers to the strings passed 602 * on the command line, one with (possibly duplicated) pointers to the 603 * argv array, and one with integer values that are lengths of the 604 * strings, but also flags meaning that the string has to be massaged. 605 */ 606 PLAN * 607 c_execdir(argvp, isok) 608 char ***argvp; 609 int isok; 610 { 611 PLAN *new; /* node returned */ 612 int cnt; 613 char **argv, **ap, *p; 614 615 ftsoptions &= ~FTS_NOSTAT; 616 isoutput = 1; 617 618 new = palloc(N_EXECDIR, f_execdir); 619 620 for (ap = argv = *argvp;; ++ap) { 621 if (!*ap) 622 errx(1, 623 "-execdir: no terminating \";\""); 624 if (**ap == ';') 625 break; 626 } 627 628 cnt = ap - *argvp + 1; 629 new->e_argv = (char **)emalloc((u_int)cnt * sizeof(char *)); 630 new->e_orig = (char **)emalloc((u_int)cnt * sizeof(char *)); 631 new->e_len = (int *)emalloc((u_int)cnt * sizeof(int)); 632 633 for (argv = *argvp, cnt = 0; argv < ap; ++argv, ++cnt) { 634 new->e_orig[cnt] = *argv; 635 for (p = *argv; *p; ++p) 636 if (p[0] == '{' && p[1] == '}') { 637 new->e_argv[cnt] = emalloc((u_int)MAXPATHLEN); 638 new->e_len[cnt] = MAXPATHLEN; 639 break; 640 } 641 if (!*p) { 642 new->e_argv[cnt] = *argv; 643 new->e_len[cnt] = 0; 644 } 645 } 646 new->e_argv[cnt] = new->e_orig[cnt] = NULL; 647 648 *argvp = argv + 1; 649 return (new); 650 } 651 652 /* 653 * -flags [-]flags functions -- 654 */ 655 int 656 f_flags(plan, entry) 657 PLAN *plan; 658 FTSENT *entry; 659 { 660 u_int32_t flags; 661 662 flags = entry->fts_statp->st_flags; 663 if (plan->flags == F_ATLEAST) 664 return ((plan->f_data | flags) == flags); 665 else 666 return (flags == plan->f_data); 667 /* NOTREACHED */ 668 } 669 670 PLAN * 671 c_flags(argvp, isok) 672 char ***argvp; 673 int isok; 674 { 675 char *flags = **argvp; 676 PLAN *new; 677 u_long flagset; 678 679 (*argvp)++; 680 ftsoptions &= ~FTS_NOSTAT; 681 682 new = palloc(N_FLAGS, f_flags); 683 684 if (*flags == '-') { 685 new->flags = F_ATLEAST; 686 ++flags; 687 } 688 689 flagset = 0; 690 if ((strcmp(flags, "none") != 0) && 691 (string_to_flags(&flags, &flagset, NULL) != 0)) 692 errx(1, "-flags: %s: illegal flags string", flags); 693 new->f_data = flagset; 694 return (new); 695 } 696 697 /* 698 * -follow functions -- 699 * 700 * Always true, causes symbolic links to be followed on a global 701 * basis. 702 */ 703 PLAN * 704 c_follow(argvp, isok) 705 char ***argvp; 706 int isok; 707 { 708 ftsoptions &= ~FTS_PHYSICAL; 709 ftsoptions |= FTS_LOGICAL; 710 711 return (palloc(N_FOLLOW, f_always_true)); 712 } 713 714 /* 715 * -fstype functions -- 716 * 717 * True if the file is of a certain type. 718 */ 719 int 720 f_fstype(plan, entry) 721 PLAN *plan; 722 FTSENT *entry; 723 { 724 static dev_t curdev; /* need a guaranteed illegal dev value */ 725 static int first = 1; 726 struct statfs sb; 727 static short val; 728 static char fstype[MFSNAMELEN]; 729 char *p, save[2]; 730 731 /* Only check when we cross mount point. */ 732 if (first || curdev != entry->fts_statp->st_dev) { 733 curdev = entry->fts_statp->st_dev; 734 735 /* 736 * Statfs follows symlinks; find wants the link's file system, 737 * not where it points. 738 */ 739 if (entry->fts_info == FTS_SL || 740 entry->fts_info == FTS_SLNONE) { 741 if ((p = strrchr(entry->fts_accpath, '/')) != NULL) 742 ++p; 743 else 744 p = entry->fts_accpath; 745 save[0] = p[0]; 746 p[0] = '.'; 747 save[1] = p[1]; 748 p[1] = '\0'; 749 750 } else 751 p = NULL; 752 753 if (statfs(entry->fts_accpath, &sb)) 754 err(1, "%s", entry->fts_accpath); 755 756 if (p) { 757 p[0] = save[0]; 758 p[1] = save[1]; 759 } 760 761 first = 0; 762 763 /* 764 * Further tests may need both of these values, so 765 * always copy both of them. 766 */ 767 val = sb.f_flags; 768 strncpy(fstype, sb.f_fstypename, MFSNAMELEN); 769 } 770 switch (plan->flags) { 771 case F_MTFLAG: 772 return (val & plan->mt_data); 773 case F_MTTYPE: 774 return (strncmp(fstype, plan->c_data, MFSNAMELEN) == 0); 775 default: 776 abort(); 777 } 778 } 779 780 PLAN * 781 c_fstype(argvp, isok) 782 char ***argvp; 783 int isok; 784 { 785 char *arg = **argvp; 786 PLAN *new; 787 788 (*argvp)++; 789 ftsoptions &= ~FTS_NOSTAT; 790 791 new = palloc(N_FSTYPE, f_fstype); 792 793 switch (*arg) { 794 case 'l': 795 if (!strcmp(arg, "local")) { 796 new->flags = F_MTFLAG; 797 new->mt_data = MNT_LOCAL; 798 return (new); 799 } 800 break; 801 case 'r': 802 if (!strcmp(arg, "rdonly")) { 803 new->flags = F_MTFLAG; 804 new->mt_data = MNT_RDONLY; 805 return (new); 806 } 807 break; 808 } 809 810 new->flags = F_MTTYPE; 811 new->c_data = arg; 812 return (new); 813 } 814 815 /* 816 * -group gname functions -- 817 * 818 * True if the file belongs to the group gname. If gname is numeric and 819 * an equivalent of the getgrnam() function does not return a valid group 820 * name, gname is taken as a group ID. 821 */ 822 int 823 f_group(plan, entry) 824 PLAN *plan; 825 FTSENT *entry; 826 { 827 828 return (entry->fts_statp->st_gid == plan->g_data); 829 } 830 831 PLAN * 832 c_group(argvp, isok) 833 char ***argvp; 834 int isok; 835 { 836 char *gname = **argvp; 837 PLAN *new; 838 struct group *g; 839 gid_t gid; 840 841 (*argvp)++; 842 ftsoptions &= ~FTS_NOSTAT; 843 844 g = getgrnam(gname); 845 if (g == NULL) { 846 gid = atoi(gname); 847 if (gid == 0 && gname[0] != '0') 848 errx(1, "-group: %s: no such group", gname); 849 } else 850 gid = g->gr_gid; 851 852 new = palloc(N_GROUP, f_group); 853 new->g_data = gid; 854 return (new); 855 } 856 857 /* 858 * -inum n functions -- 859 * 860 * True if the file has inode # n. 861 */ 862 int 863 f_inum(plan, entry) 864 PLAN *plan; 865 FTSENT *entry; 866 { 867 868 COMPARE(entry->fts_statp->st_ino, plan->i_data); 869 } 870 871 PLAN * 872 c_inum(argvp, isok) 873 char ***argvp; 874 int isok; 875 { 876 char *arg = **argvp; 877 PLAN *new; 878 879 (*argvp)++; 880 ftsoptions &= ~FTS_NOSTAT; 881 882 new = palloc(N_INUM, f_inum); 883 new->i_data = find_parsenum(new, "-inum", arg, NULL); 884 return (new); 885 } 886 887 /* 888 * -links n functions -- 889 * 890 * True if the file has n links. 891 */ 892 int 893 f_links(plan, entry) 894 PLAN *plan; 895 FTSENT *entry; 896 { 897 898 COMPARE(entry->fts_statp->st_nlink, plan->l_data); 899 } 900 901 PLAN * 902 c_links(argvp, isok) 903 char ***argvp; 904 int isok; 905 { 906 char *arg = **argvp; 907 PLAN *new; 908 909 (*argvp)++; 910 ftsoptions &= ~FTS_NOSTAT; 911 912 new = palloc(N_LINKS, f_links); 913 new->l_data = (nlink_t)find_parsenum(new, "-links", arg, NULL); 914 return (new); 915 } 916 917 /* 918 * -ls functions -- 919 * 920 * Always true - prints the current entry to stdout in "ls" format. 921 */ 922 int 923 f_ls(plan, entry) 924 PLAN *plan; 925 FTSENT *entry; 926 { 927 928 printlong(entry->fts_path, entry->fts_accpath, entry->fts_statp); 929 return (1); 930 } 931 932 PLAN * 933 c_ls(argvp, isok) 934 char ***argvp; 935 int isok; 936 { 937 938 ftsoptions &= ~FTS_NOSTAT; 939 isoutput = 1; 940 941 return (palloc(N_LS, f_ls)); 942 } 943 944 /* 945 * - maxdepth n functions -- 946 * 947 * True if the current search depth is less than or equal to the 948 * maximum depth specified 949 */ 950 int 951 f_maxdepth(plan, entry) 952 PLAN *plan; 953 FTSENT *entry; 954 { 955 extern FTS *tree; 956 957 if (entry->fts_level >= plan->max_data) 958 fts_set(tree, entry, FTS_SKIP); 959 return (entry->fts_level <= plan->max_data); 960 } 961 962 PLAN * 963 c_maxdepth(argvp, isok) 964 char ***argvp; 965 int isok; 966 { 967 char *arg = **argvp; 968 PLAN *new; 969 970 (*argvp)++; 971 new = palloc(N_MAXDEPTH, f_maxdepth); 972 new->max_data = atoi(arg); 973 return (new); 974 } 975 976 /* 977 * - mindepth n functions -- 978 * 979 * True if the current search depth is greater than or equal to the 980 * minimum depth specified 981 */ 982 int 983 f_mindepth(plan, entry) 984 PLAN *plan; 985 FTSENT *entry; 986 { 987 return (entry->fts_level >= plan->min_data); 988 } 989 990 PLAN * 991 c_mindepth(argvp, isok) 992 char ***argvp; 993 int isok; 994 { 995 char *arg = **argvp; 996 PLAN *new; 997 998 (*argvp)++; 999 new = palloc(N_MINDEPTH, f_mindepth); 1000 new->min_data = atoi(arg); 1001 return (new); 1002 } 1003 /* 1004 * -mmin n functions -- 1005 * 1006 * True if the difference between the file modification time and the 1007 * current time is n 24 hour periods. 1008 */ 1009 int 1010 f_mmin(plan, entry) 1011 PLAN *plan; 1012 FTSENT *entry; 1013 { 1014 COMPARE((now - entry->fts_statp->st_mtime + SECSPERMIN - 1) / 1015 SECSPERMIN, plan->t_data); 1016 } 1017 1018 PLAN * 1019 c_mmin(argvp, isok) 1020 char ***argvp; 1021 int isok; 1022 { 1023 char *arg = **argvp; 1024 PLAN *new; 1025 1026 (*argvp)++; 1027 ftsoptions &= ~FTS_NOSTAT; 1028 1029 new = palloc(N_MMIN, f_mmin); 1030 new->t_data = find_parsenum(new, "-mmin", arg, NULL); 1031 TIME_CORRECT(new, N_MMIN); 1032 return (new); 1033 } 1034 /* 1035 * -mtime n functions -- 1036 * 1037 * True if the difference between the file modification time and the 1038 * current time is n 24 hour periods. 1039 */ 1040 int 1041 f_mtime(plan, entry) 1042 PLAN *plan; 1043 FTSENT *entry; 1044 { 1045 COMPARE((now - entry->fts_statp->st_mtime + SECSPERDAY - 1) / 1046 SECSPERDAY, plan->t_data); 1047 } 1048 1049 PLAN * 1050 c_mtime(argvp, isok) 1051 char ***argvp; 1052 int isok; 1053 { 1054 char *arg = **argvp; 1055 PLAN *new; 1056 1057 (*argvp)++; 1058 ftsoptions &= ~FTS_NOSTAT; 1059 1060 new = palloc(N_MTIME, f_mtime); 1061 new->t_data = find_parsenum(new, "-mtime", arg, NULL); 1062 TIME_CORRECT(new, N_MTIME); 1063 return (new); 1064 } 1065 1066 /* 1067 * -name functions -- 1068 * 1069 * True if the basename of the filename being examined 1070 * matches pattern using Pattern Matching Notation S3.14 1071 */ 1072 int 1073 f_name(plan, entry) 1074 PLAN *plan; 1075 FTSENT *entry; 1076 { 1077 1078 return (!fnmatch(plan->c_data, entry->fts_name, 0)); 1079 } 1080 1081 PLAN * 1082 c_name(argvp, isok) 1083 char ***argvp; 1084 int isok; 1085 { 1086 char *pattern = **argvp; 1087 PLAN *new; 1088 1089 (*argvp)++; 1090 new = palloc(N_NAME, f_name); 1091 new->c_data = pattern; 1092 return (new); 1093 } 1094 1095 /* 1096 * -newer file functions -- 1097 * 1098 * True if the current file has been modified more recently 1099 * than the modification time of the file named by the pathname 1100 * file. 1101 */ 1102 int 1103 f_newer(plan, entry) 1104 PLAN *plan; 1105 FTSENT *entry; 1106 { 1107 1108 return (entry->fts_statp->st_mtime > plan->t_data); 1109 } 1110 1111 PLAN * 1112 c_newer(argvp, isok) 1113 char ***argvp; 1114 int isok; 1115 { 1116 char *filename = **argvp; 1117 PLAN *new; 1118 struct stat sb; 1119 1120 (*argvp)++; 1121 ftsoptions &= ~FTS_NOSTAT; 1122 1123 if (stat(filename, &sb)) 1124 err(1, "%s", filename); 1125 new = palloc(N_NEWER, f_newer); 1126 new->t_data = sb.st_mtime; 1127 return (new); 1128 } 1129 1130 /* 1131 * -nogroup functions -- 1132 * 1133 * True if file belongs to a user ID for which the equivalent 1134 * of the getgrnam() 9.2.1 [POSIX.1] function returns NULL. 1135 */ 1136 int 1137 f_nogroup(plan, entry) 1138 PLAN *plan; 1139 FTSENT *entry; 1140 { 1141 1142 return (group_from_gid(entry->fts_statp->st_gid, 1) ? 0 : 1); 1143 } 1144 1145 PLAN * 1146 c_nogroup(argvp, isok) 1147 char ***argvp; 1148 int isok; 1149 { 1150 ftsoptions &= ~FTS_NOSTAT; 1151 1152 return (palloc(N_NOGROUP, f_nogroup)); 1153 } 1154 1155 /* 1156 * -nouser functions -- 1157 * 1158 * True if file belongs to a user ID for which the equivalent 1159 * of the getpwuid() 9.2.2 [POSIX.1] function returns NULL. 1160 */ 1161 int 1162 f_nouser(plan, entry) 1163 PLAN *plan; 1164 FTSENT *entry; 1165 { 1166 1167 return (user_from_uid(entry->fts_statp->st_uid, 1) ? 0 : 1); 1168 } 1169 1170 PLAN * 1171 c_nouser(argvp, isok) 1172 char ***argvp; 1173 int isok; 1174 { 1175 ftsoptions &= ~FTS_NOSTAT; 1176 1177 return (palloc(N_NOUSER, f_nouser)); 1178 } 1179 1180 /* 1181 * -path functions -- 1182 * 1183 * True if the path of the filename being examined 1184 * matches pattern using Pattern Matching Notation S3.14 1185 */ 1186 int 1187 f_path(plan, entry) 1188 PLAN *plan; 1189 FTSENT *entry; 1190 { 1191 1192 return (!fnmatch(plan->c_data, entry->fts_path, 0)); 1193 } 1194 1195 PLAN * 1196 c_path(argvp, isok) 1197 char ***argvp; 1198 int isok; 1199 { 1200 char *pattern = **argvp; 1201 PLAN *new; 1202 1203 (*argvp)++; 1204 new = palloc(N_NAME, f_path); 1205 new->c_data = pattern; 1206 return (new); 1207 } 1208 1209 /* 1210 * -perm functions -- 1211 * 1212 * The mode argument is used to represent file mode bits. If it starts 1213 * with a leading digit, it's treated as an octal mode, otherwise as a 1214 * symbolic mode. 1215 */ 1216 int 1217 f_perm(plan, entry) 1218 PLAN *plan; 1219 FTSENT *entry; 1220 { 1221 mode_t mode; 1222 1223 mode = entry->fts_statp->st_mode & 1224 (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO); 1225 if (plan->flags == F_ATLEAST) 1226 return ((plan->m_data | mode) == mode); 1227 else 1228 return (mode == plan->m_data); 1229 /* NOTREACHED */ 1230 } 1231 1232 PLAN * 1233 c_perm(argvp, isok) 1234 char ***argvp; 1235 int isok; 1236 { 1237 char *perm = **argvp; 1238 PLAN *new; 1239 mode_t *set; 1240 1241 (*argvp)++; 1242 ftsoptions &= ~FTS_NOSTAT; 1243 1244 new = palloc(N_PERM, f_perm); 1245 1246 if (*perm == '-') { 1247 new->flags = F_ATLEAST; 1248 ++perm; 1249 } 1250 1251 if ((set = setmode(perm)) == NULL) 1252 err(1, "-perm: %s: illegal mode string", perm); 1253 1254 new->m_data = getmode(set, 0); 1255 free(set); 1256 return (new); 1257 } 1258 1259 /* 1260 * -print functions -- 1261 * 1262 * Always true, causes the current pathame to be written to 1263 * standard output. 1264 */ 1265 int 1266 f_print(plan, entry) 1267 PLAN *plan; 1268 FTSENT *entry; 1269 { 1270 1271 (void)printf("%s\n", entry->fts_path); 1272 return (1); 1273 } 1274 1275 int 1276 f_print0(plan, entry) 1277 PLAN *plan; 1278 FTSENT *entry; 1279 { 1280 1281 (void)fputs(entry->fts_path, stdout); 1282 (void)fputc('\0', stdout); 1283 return (1); 1284 } 1285 1286 int 1287 f_printx(plan, entry) 1288 PLAN *plan; 1289 FTSENT *entry; 1290 { 1291 char *cp; 1292 1293 for (cp = entry->fts_path; *cp; cp++) { 1294 if (*cp == '\'' || *cp == '\"' || *cp == ' ' || 1295 *cp == '$' || *cp == '`' || 1296 *cp == '\t' || *cp == '\n' || *cp == '\\') 1297 fputc('\\', stdout); 1298 1299 fputc(*cp, stdout); 1300 } 1301 1302 fputc('\n', stdout); 1303 return (1); 1304 } 1305 1306 PLAN * 1307 c_print(argvp, isok) 1308 char ***argvp; 1309 int isok; 1310 { 1311 1312 isoutput = 1; 1313 1314 return (palloc(N_PRINT, f_print)); 1315 } 1316 1317 PLAN * 1318 c_print0(argvp, isok) 1319 char ***argvp; 1320 int isok; 1321 { 1322 1323 isoutput = 1; 1324 1325 return (palloc(N_PRINT0, f_print0)); 1326 } 1327 1328 PLAN * 1329 c_printx(argvp, isok) 1330 char ***argvp; 1331 int isok; 1332 { 1333 1334 isoutput = 1; 1335 1336 return (palloc(N_PRINTX, f_printx)); 1337 } 1338 1339 /* 1340 * -prune functions -- 1341 * 1342 * Prune a portion of the hierarchy. 1343 */ 1344 int 1345 f_prune(plan, entry) 1346 PLAN *plan; 1347 FTSENT *entry; 1348 { 1349 if (fts_set(tree, entry, FTS_SKIP)) 1350 err(1, "%s", entry->fts_path); 1351 return (1); 1352 } 1353 1354 PLAN * 1355 c_prune(argvp, isok) 1356 char ***argvp; 1357 int isok; 1358 { 1359 1360 return (palloc(N_PRUNE, f_prune)); 1361 } 1362 1363 /* 1364 * -regex regexp (and related) functions -- 1365 * 1366 * True if the complete file path matches the regular expression regexp. 1367 * For -regex, regexp is a case-sensitive (basic) regular expression. 1368 * For -iregex, regexp is a case-insensitive (basic) regular expression. 1369 */ 1370 int 1371 f_regex(plan, entry) 1372 PLAN *plan; 1373 FTSENT *entry; 1374 { 1375 1376 return (regexec(&plan->regexp_data, entry->fts_path, 0, NULL, 0) == 0); 1377 } 1378 1379 static PLAN * 1380 c_regex_common(argvp, isok, type, regcomp_flags) 1381 char ***argvp; 1382 int isok, regcomp_flags; 1383 enum ntype type; 1384 { 1385 char errbuf[LINE_MAX]; 1386 regex_t reg; 1387 char *regexp = **argvp; 1388 char *lineregexp; 1389 PLAN *new; 1390 int rv; 1391 1392 (*argvp)++; 1393 1394 lineregexp = alloca(strlen(regexp) + 1 + 6); /* max needed */ 1395 sprintf(lineregexp, "^%s(%s%s)$", 1396 (regcomp_flags & REG_EXTENDED) ? "" : "\\", regexp, 1397 (regcomp_flags & REG_EXTENDED) ? "" : "\\"); 1398 rv = regcomp(®, lineregexp, REG_NOSUB|regcomp_flags); 1399 if (rv != 0) { 1400 regerror(rv, ®, errbuf, sizeof errbuf); 1401 errx(1, "regexp %s: %s", regexp, errbuf); 1402 } 1403 1404 new = palloc(type, f_regex); 1405 new->regexp_data = reg; 1406 return (new); 1407 } 1408 1409 PLAN * 1410 c_regex(argvp, isok) 1411 char ***argvp; 1412 int isok; 1413 { 1414 1415 return (c_regex_common(argvp, isok, N_REGEX, REG_BASIC)); 1416 } 1417 1418 PLAN * 1419 c_iregex(argvp, isok) 1420 char ***argvp; 1421 int isok; 1422 { 1423 1424 return (c_regex_common(argvp, isok, N_IREGEX, REG_BASIC|REG_ICASE)); 1425 } 1426 1427 /* 1428 * -size n[c] functions -- 1429 * 1430 * True if the file size in bytes, divided by an implementation defined 1431 * value and rounded up to the next integer, is n. If n is followed by 1432 * a c, the size is in bytes. 1433 */ 1434 #define FIND_SIZE 512 1435 static int divsize = 1; 1436 1437 int 1438 f_size(plan, entry) 1439 PLAN *plan; 1440 FTSENT *entry; 1441 { 1442 off_t size; 1443 1444 size = divsize ? (entry->fts_statp->st_size + FIND_SIZE - 1) / 1445 FIND_SIZE : entry->fts_statp->st_size; 1446 COMPARE(size, plan->o_data); 1447 } 1448 1449 PLAN * 1450 c_size(argvp, isok) 1451 char ***argvp; 1452 int isok; 1453 { 1454 char *arg = **argvp; 1455 PLAN *new; 1456 char endch; 1457 1458 (*argvp)++; 1459 ftsoptions &= ~FTS_NOSTAT; 1460 1461 new = palloc(N_SIZE, f_size); 1462 endch = 'c'; 1463 new->o_data = find_parsenum(new, "-size", arg, &endch); 1464 if (endch == 'c') 1465 divsize = 0; 1466 return (new); 1467 } 1468 1469 /* 1470 * -type c functions -- 1471 * 1472 * True if the type of the file is c, where c is b, c, d, p, f or w 1473 * for block special file, character special file, directory, FIFO, 1474 * regular file or whiteout respectively. 1475 */ 1476 int 1477 f_type(plan, entry) 1478 PLAN *plan; 1479 FTSENT *entry; 1480 { 1481 1482 return ((entry->fts_statp->st_mode & S_IFMT) == plan->m_data); 1483 } 1484 1485 PLAN * 1486 c_type(argvp, isok) 1487 char ***argvp; 1488 int isok; 1489 { 1490 char *typestring = **argvp; 1491 PLAN *new; 1492 mode_t mask = (mode_t)0; 1493 1494 (*argvp)++; 1495 ftsoptions &= ~FTS_NOSTAT; 1496 1497 switch (typestring[0]) { 1498 #ifdef S_IFWHT 1499 case 'W': 1500 #ifdef FTS_WHITEOUT 1501 ftsoptions |= FTS_WHITEOUT; 1502 #endif 1503 mask = S_IFWHT; 1504 break; 1505 #endif 1506 case 'b': 1507 mask = S_IFBLK; 1508 break; 1509 case 'c': 1510 mask = S_IFCHR; 1511 break; 1512 case 'd': 1513 mask = S_IFDIR; 1514 break; 1515 case 'f': 1516 mask = S_IFREG; 1517 break; 1518 case 'l': 1519 mask = S_IFLNK; 1520 break; 1521 case 'p': 1522 mask = S_IFIFO; 1523 break; 1524 case 's': 1525 mask = S_IFSOCK; 1526 break; 1527 #ifdef FTS_WHITEOUT 1528 case 'w': 1529 mask = S_IFWHT; 1530 ftsoptions |= FTS_WHITEOUT; 1531 break; 1532 #endif /* FTS_WHITEOUT */ 1533 default: 1534 errx(1, "-type: %s: unknown type", typestring); 1535 } 1536 1537 new = palloc(N_TYPE, f_type); 1538 new->m_data = mask; 1539 return (new); 1540 } 1541 1542 /* 1543 * -user uname functions -- 1544 * 1545 * True if the file belongs to the user uname. If uname is numeric and 1546 * an equivalent of the getpwnam() S9.2.2 [POSIX.1] function does not 1547 * return a valid user name, uname is taken as a user ID. 1548 */ 1549 int 1550 f_user(plan, entry) 1551 PLAN *plan; 1552 FTSENT *entry; 1553 { 1554 1555 COMPARE(entry->fts_statp->st_uid, plan->u_data); 1556 } 1557 1558 PLAN * 1559 c_user(argvp, isok) 1560 char ***argvp; 1561 int isok; 1562 { 1563 char *username = **argvp; 1564 PLAN *new; 1565 struct passwd *p; 1566 uid_t uid; 1567 1568 (*argvp)++; 1569 ftsoptions &= ~FTS_NOSTAT; 1570 1571 new = palloc(N_USER, f_user); 1572 p = getpwnam(username); 1573 if (p == NULL) { 1574 if (atoi(username) == 0 && username[0] != '0' && 1575 strcmp(username, "+0") && strcmp(username, "-0")) 1576 errx(1, "-user: %s: no such user", username); 1577 uid = find_parsenum(new, "-user", username, NULL); 1578 1579 } else { 1580 new->flags = F_EQUAL; 1581 uid = p->pw_uid; 1582 } 1583 1584 new->u_data = uid; 1585 return (new); 1586 } 1587 1588 /* 1589 * -xdev functions -- 1590 * 1591 * Always true, causes find not to decend past directories that have a 1592 * different device ID (st_dev, see stat() S5.6.2 [POSIX.1]) 1593 */ 1594 PLAN * 1595 c_xdev(argvp, isok) 1596 char ***argvp; 1597 int isok; 1598 { 1599 ftsoptions |= FTS_XDEV; 1600 1601 return (palloc(N_XDEV, f_always_true)); 1602 } 1603 1604 /* 1605 * ( expression ) functions -- 1606 * 1607 * True if expression is true. 1608 */ 1609 int 1610 f_expr(plan, entry) 1611 PLAN *plan; 1612 FTSENT *entry; 1613 { 1614 PLAN *p; 1615 int state; 1616 1617 state = 0; 1618 for (p = plan->p_data[0]; 1619 p && (state = (p->eval)(p, entry)); p = p->next); 1620 return (state); 1621 } 1622 1623 /* 1624 * N_OPENPAREN and N_CLOSEPAREN nodes are temporary place markers. They are 1625 * eliminated during phase 2 of find_formplan() --- the '(' node is converted 1626 * to a N_EXPR node containing the expression and the ')' node is discarded. 1627 */ 1628 PLAN * 1629 c_openparen(argvp, isok) 1630 char ***argvp; 1631 int isok; 1632 { 1633 1634 return (palloc(N_OPENPAREN, (int (*) __P((PLAN *, FTSENT *)))-1)); 1635 } 1636 1637 PLAN * 1638 c_closeparen(argvp, isok) 1639 char ***argvp; 1640 int isok; 1641 { 1642 1643 return (palloc(N_CLOSEPAREN, (int (*) __P((PLAN *, FTSENT *)))-1)); 1644 } 1645 1646 /* 1647 * ! expression functions -- 1648 * 1649 * Negation of a primary; the unary NOT operator. 1650 */ 1651 int 1652 f_not(plan, entry) 1653 PLAN *plan; 1654 FTSENT *entry; 1655 { 1656 PLAN *p; 1657 int state; 1658 1659 state = 0; 1660 for (p = plan->p_data[0]; 1661 p && (state = (p->eval)(p, entry)); p = p->next); 1662 return (!state); 1663 } 1664 1665 PLAN * 1666 c_not(argvp, isok) 1667 char ***argvp; 1668 int isok; 1669 { 1670 1671 return (palloc(N_NOT, f_not)); 1672 } 1673 1674 /* 1675 * expression -o expression functions -- 1676 * 1677 * Alternation of primaries; the OR operator. The second expression is 1678 * not evaluated if the first expression is true. 1679 */ 1680 int 1681 f_or(plan, entry) 1682 PLAN *plan; 1683 FTSENT *entry; 1684 { 1685 PLAN *p; 1686 int state; 1687 1688 state = 0; 1689 for (p = plan->p_data[0]; 1690 p && (state = (p->eval)(p, entry)); p = p->next); 1691 1692 if (state) 1693 return (1); 1694 1695 for (p = plan->p_data[1]; 1696 p && (state = (p->eval)(p, entry)); p = p->next); 1697 return (state); 1698 } 1699 1700 PLAN * 1701 c_or(argvp, isok) 1702 char ***argvp; 1703 int isok; 1704 { 1705 1706 return (palloc(N_OR, f_or)); 1707 } 1708 1709 PLAN * 1710 c_null(argvp, isok) 1711 char ***argvp; 1712 int isok; 1713 { 1714 1715 return (NULL); 1716 } 1717 1718 static PLAN * 1719 palloc(t, f) 1720 enum ntype t; 1721 int (*f) __P((PLAN *, FTSENT *)); 1722 { 1723 PLAN *new; 1724 1725 if ((new = malloc(sizeof(PLAN))) == NULL) 1726 err(1, NULL); 1727 new->type = t; 1728 new->eval = f; 1729 new->flags = 0; 1730 new->next = NULL; 1731 return (new); 1732 } 1733