function.c revision 82972
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 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37#ifndef lint 38#if 0 39static const char sccsid[] = "@(#)function.c 8.10 (Berkeley) 5/4/95"; 40#else 41static const char rcsid[] = 42 "$FreeBSD: head/usr.bin/find/function.c 82972 2001-09-04 16:09:01Z ru $"; 43#endif 44#endif /* not lint */ 45 46#include <sys/param.h> 47#include <sys/ucred.h> 48#include <sys/stat.h> 49#include <sys/wait.h> 50#include <sys/mount.h> 51#include <sys/timeb.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 <pwd.h> 60#include <regex.h> 61#include <stdio.h> 62#include <stdlib.h> 63#include <string.h> 64#include <unistd.h> 65 66#include "find.h" 67 68time_t get_date __P((char *date, struct timeb *now)); 69 70#define COMPARE(a, b) { \ 71 switch (plan->flags & F_ELG_MASK) { \ 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 83static PLAN * 84palloc(option) 85 OPTION *option; 86{ 87 PLAN *new; 88 89 if ((new = malloc(sizeof(PLAN))) == NULL) 90 err(1, NULL); 91 new->execute = option->execute; 92 new->flags = option->flags; 93 new->next = NULL; 94 return new; 95} 96 97/* 98 * find_parsenum -- 99 * Parse a string of the form [+-]# and return the value. 100 */ 101static long long 102find_parsenum(plan, option, vp, endch) 103 PLAN *plan; 104 char *option, *vp, *endch; 105{ 106 long long value; 107 char *endchar, *str; /* Pointer to character ending conversion. */ 108 109 /* Determine comparison from leading + or -. */ 110 str = vp; 111 switch (*str) { 112 case '+': 113 ++str; 114 plan->flags |= F_GREATER; 115 break; 116 case '-': 117 ++str; 118 plan->flags |= F_LESSTHAN; 119 break; 120 default: 121 plan->flags |= F_EQUAL; 122 break; 123 } 124 125 /* 126 * Convert the string with strtoq(). Note, if strtoq() returns zero 127 * and endchar points to the beginning of the string we know we have 128 * a syntax error. 129 */ 130 value = strtoq(str, &endchar, 10); 131 if (value == 0 && endchar == str) 132 errx(1, "%s: %s: illegal numeric value", option, vp); 133 if (endchar[0] && (endch == NULL || endchar[0] != *endch)) 134 errx(1, "%s: %s: illegal trailing character", option, vp); 135 if (endch) 136 *endch = endchar[0]; 137 return value; 138} 139 140/* 141 * nextarg -- 142 * Check that another argument still exists, return a pointer to it, 143 * and increment the argument vector pointer. 144 */ 145static char * 146nextarg(option, argvp) 147 OPTION *option; 148 char ***argvp; 149{ 150 char *arg; 151 152 if ((arg = **argvp) == 0) 153 errx(1, "%s: requires additional arguments", option->name); 154 (*argvp)++; 155 return arg; 156} /* nextarg() */ 157 158/* 159 * The value of n for the inode times (atime, ctime, and mtime) is a range, 160 * i.e. n matches from (n - 1) to n 24 hour periods. This interacts with 161 * -n, such that "-mtime -1" would be less than 0 days, which isn't what the 162 * user wanted. Correct so that -1 is "less than 1". 163 */ 164#define TIME_CORRECT(p) \ 165 if (((p)->flags & F_ELG_MASK) == F_LESSTHAN) \ 166 ++((p)->t_data); 167 168/* 169 * -[acm]min n functions -- 170 * 171 * True if the difference between the 172 * file access time (-amin) 173 * last change of file status information (-cmin) 174 * file modification time (-mmin) 175 * and the current time is n min periods. 176 */ 177int 178f_Xmin(plan, entry) 179 PLAN *plan; 180 FTSENT *entry; 181{ 182 extern time_t now; 183 184 if (plan->flags & F_TIME_C) { 185 COMPARE((now - entry->fts_statp->st_ctime + 186 60 - 1) / 60, plan->t_data); 187 } else if (plan->flags & F_TIME_A) { 188 COMPARE((now - entry->fts_statp->st_atime + 189 60 - 1) / 60, plan->t_data); 190 } else { 191 COMPARE((now - entry->fts_statp->st_mtime + 192 60 - 1) / 60, plan->t_data); 193 } 194} 195 196PLAN * 197c_Xmin(option, argvp) 198 OPTION *option; 199 char ***argvp; 200{ 201 char *nmins; 202 PLAN *new; 203 204 nmins = nextarg(option, argvp); 205 ftsoptions &= ~FTS_NOSTAT; 206 207 new = palloc(option); 208 new->t_data = find_parsenum(new, option->name, nmins, NULL); 209 TIME_CORRECT(new); 210 return new; 211} 212 213/* 214 * -[acm]time n functions -- 215 * 216 * True if the difference between the 217 * file access time (-atime) 218 * last change of file status information (-ctime) 219 * file modification time (-mtime) 220 * and the current time is n 24 hour periods. 221 */ 222 223int 224f_Xtime(plan, entry) 225 PLAN *plan; 226 FTSENT *entry; 227{ 228 extern time_t now; 229 230 if (plan->flags & F_TIME_C) { 231 COMPARE((now - entry->fts_statp->st_ctime + 232 86400 - 1) / 86400, plan->t_data); 233 } else if (plan->flags & F_TIME_A) { 234 COMPARE((now - entry->fts_statp->st_atime + 235 86400 - 1) / 86400, plan->t_data); 236 } else { 237 COMPARE((now - entry->fts_statp->st_mtime + 238 86400 - 1) / 86400, plan->t_data); 239 } 240} 241 242PLAN * 243c_Xtime(option, argvp) 244 OPTION *option; 245 char ***argvp; 246{ 247 char *ndays; 248 PLAN *new; 249 250 ndays = nextarg(option, argvp); 251 ftsoptions &= ~FTS_NOSTAT; 252 253 new = palloc(option); 254 new->t_data = find_parsenum(new, option->name, ndays, NULL); 255 TIME_CORRECT(new); 256 return new; 257} 258 259/* 260 * -maxdepth/-mindepth n functions -- 261 * 262 * Does the same as -prune if the level of the current file is 263 * greater/less than the specified maximum/minimum depth. 264 * 265 * Note that -maxdepth and -mindepth are handled specially in 266 * find_execute() so their f_* functions are set to f_always_true(). 267 */ 268PLAN * 269c_mXXdepth(option, argvp) 270 OPTION *option; 271 char ***argvp; 272{ 273 char *dstr; 274 PLAN *new; 275 276 dstr = nextarg(option, argvp); 277 if (dstr[0] == '-') 278 /* all other errors handled by find_parsenum() */ 279 errx(1, "%s: %s: value must be positive", option->name, dstr); 280 281 new = palloc(option); 282 if (option->flags & F_MAXDEPTH) 283 maxdepth = find_parsenum(new, option->name, dstr, NULL); 284 else 285 mindepth = find_parsenum(new, option->name, dstr, NULL); 286 return new; 287} 288 289/* 290 * -delete functions -- 291 * 292 * True always. Makes its best shot and continues on regardless. 293 */ 294int 295f_delete(plan, entry) 296 PLAN *plan; 297 FTSENT *entry; 298{ 299 /* ignore these from fts */ 300 if (strcmp(entry->fts_accpath, ".") == 0 || 301 strcmp(entry->fts_accpath, "..") == 0) 302 return 1; 303 304 /* sanity check */ 305 if (isdepth == 0 || /* depth off */ 306 (ftsoptions & FTS_NOSTAT) || /* not stat()ing */ 307 !(ftsoptions & FTS_PHYSICAL) || /* physical off */ 308 (ftsoptions & FTS_LOGICAL)) /* or finally, logical on */ 309 errx(1, "-delete: insecure options got turned on"); 310 311 /* Potentially unsafe - do not accept relative paths whatsoever */ 312 if (strchr(entry->fts_accpath, '/') != NULL) 313 errx(1, "-delete: %s: relative path potentially not safe", 314 entry->fts_accpath); 315 316 /* Turn off user immutable bits if running as root */ 317 if ((entry->fts_statp->st_flags & (UF_APPEND|UF_IMMUTABLE)) && 318 !(entry->fts_statp->st_flags & (SF_APPEND|SF_IMMUTABLE)) && 319 geteuid() == 0) 320 chflags(entry->fts_accpath, 321 entry->fts_statp->st_flags &= ~(UF_APPEND|UF_IMMUTABLE)); 322 323 /* rmdir directories, unlink everything else */ 324 if (S_ISDIR(entry->fts_statp->st_mode)) { 325 if (rmdir(entry->fts_accpath) < 0 && errno != ENOTEMPTY) 326 warn("-delete: rmdir(%s)", entry->fts_path); 327 } else { 328 if (unlink(entry->fts_accpath) < 0) 329 warn("-delete: unlink(%s)", entry->fts_path); 330 } 331 332 /* "succeed" */ 333 return 1; 334} 335 336PLAN * 337c_delete(option, argvp) 338 OPTION *option; 339 char ***argvp; 340{ 341 342 ftsoptions &= ~FTS_NOSTAT; /* no optimise */ 343 ftsoptions |= FTS_PHYSICAL; /* disable -follow */ 344 ftsoptions &= ~FTS_LOGICAL; /* disable -follow */ 345 isoutput = 1; /* possible output */ 346 isdepth = 1; /* -depth implied */ 347 348 return palloc(option); 349} 350 351 352/* 353 * -depth functions -- 354 * 355 * Always true, causes descent of the directory hierarchy to be done 356 * so that all entries in a directory are acted on before the directory 357 * itself. 358 */ 359int 360f_always_true(plan, entry) 361 PLAN *plan; 362 FTSENT *entry; 363{ 364 return 1; 365} 366 367PLAN * 368c_depth(option, argvp) 369 OPTION *option; 370 char ***argvp; 371{ 372 isdepth = 1; 373 374 return palloc(option); 375} 376 377/* 378 * -empty functions -- 379 * 380 * True if the file or directory is empty 381 */ 382int 383f_empty(plan, entry) 384 PLAN *plan; 385 FTSENT *entry; 386{ 387 if (S_ISREG(entry->fts_statp->st_mode) && 388 entry->fts_statp->st_size == 0) 389 return 1; 390 if (S_ISDIR(entry->fts_statp->st_mode)) { 391 struct dirent *dp; 392 int empty; 393 DIR *dir; 394 395 empty = 1; 396 dir = opendir(entry->fts_accpath); 397 if (dir == NULL) 398 err(1, "%s", entry->fts_accpath); 399 for (dp = readdir(dir); dp; dp = readdir(dir)) 400 if (dp->d_name[0] != '.' || 401 (dp->d_name[1] != '\0' && 402 (dp->d_name[1] != '.' || dp->d_name[2] != '\0'))) { 403 empty = 0; 404 break; 405 } 406 closedir(dir); 407 return empty; 408 } 409 return 0; 410} 411 412PLAN * 413c_empty(option, argvp) 414 OPTION *option; 415 char ***argvp; 416{ 417 ftsoptions &= ~FTS_NOSTAT; 418 419 return palloc(option); 420} 421 422/* 423 * [-exec | -execdir | -ok] utility [arg ... ] ; functions -- 424 * 425 * True if the executed utility returns a zero value as exit status. 426 * The end of the primary expression is delimited by a semicolon. If 427 * "{}" occurs anywhere, it gets replaced by the current pathname, 428 * or, in the case of -execdir, the current basename (filename 429 * without leading directory prefix). For -exec and -ok, 430 * the current directory for the execution of utility is the same as 431 * the current directory when the find utility was started, whereas 432 * for -execdir, it is the directory the file resides in. 433 * 434 * The primary -ok differs from -exec in that it requests affirmation 435 * of the user before executing the utility. 436 */ 437int 438f_exec(plan, entry) 439 register PLAN *plan; 440 FTSENT *entry; 441{ 442 extern int dotfd; 443 register int cnt; 444 pid_t pid; 445 int status; 446 char *file; 447 448 /* XXX - if file/dir ends in '/' this will not work -- can it? */ 449 if ((plan->flags & F_EXECDIR) && \ 450 (file = strrchr(entry->fts_path, '/'))) 451 file++; 452 else 453 file = entry->fts_path; 454 455 for (cnt = 0; plan->e_argv[cnt]; ++cnt) 456 if (plan->e_len[cnt]) 457 brace_subst(plan->e_orig[cnt], &plan->e_argv[cnt], 458 file, plan->e_len[cnt]); 459 460 if ((plan->flags & F_NEEDOK) && !queryuser(plan->e_argv)) 461 return 0; 462 463 /* make sure find output is interspersed correctly with subprocesses */ 464 fflush(stdout); 465 fflush(stderr); 466 467 switch (pid = fork()) { 468 case -1: 469 err(1, "fork"); 470 /* NOTREACHED */ 471 case 0: 472 /* change dir back from where we started */ 473 if (!(plan->flags & F_EXECDIR) && fchdir(dotfd)) { 474 warn("chdir"); 475 _exit(1); 476 } 477 execvp(plan->e_argv[0], plan->e_argv); 478 warn("%s", plan->e_argv[0]); 479 _exit(1); 480 } 481 pid = waitpid(pid, &status, 0); 482 return (pid != -1 && WIFEXITED(status) && !WEXITSTATUS(status)); 483} 484 485/* 486 * c_exec, c_execdir, c_ok -- 487 * build three parallel arrays, one with pointers to the strings passed 488 * on the command line, one with (possibly duplicated) pointers to the 489 * argv array, and one with integer values that are lengths of the 490 * strings, but also flags meaning that the string has to be massaged. 491 */ 492PLAN * 493c_exec(option, argvp) 494 OPTION *option; 495 char ***argvp; 496{ 497 PLAN *new; /* node returned */ 498 register int cnt; 499 register char **argv, **ap, *p; 500 501 /* XXX - was in c_execdir, but seems unnecessary!? 502 ftsoptions &= ~FTS_NOSTAT; 503 */ 504 isoutput = 1; 505 506 /* XXX - this is a change from the previous coding */ 507 new = palloc(option); 508 509 for (ap = argv = *argvp;; ++ap) { 510 if (!*ap) 511 errx(1, 512 "%s: no terminating \";\"", option->name); 513 if (**ap == ';') 514 break; 515 } 516 517 cnt = ap - *argvp + 1; 518 if ((new->e_argv = malloc((u_int)cnt * sizeof(char *))) == NULL) 519 err(1, (char *)NULL); 520 if ((new->e_orig = malloc((u_int)cnt * sizeof(char *))) == NULL) 521 err(1, (char *)NULL); 522 if ((new->e_len = malloc((u_int)cnt * sizeof(int))) == NULL) 523 err(1, (char *)NULL); 524 525 for (argv = *argvp, cnt = 0; argv < ap; ++argv, ++cnt) { 526 new->e_orig[cnt] = *argv; 527 for (p = *argv; *p; ++p) 528 if (p[0] == '{' && p[1] == '}') { 529 if ((new->e_argv[cnt] = 530 malloc((u_int)MAXPATHLEN)) == NULL) 531 err(1, (char *)NULL); 532 new->e_len[cnt] = MAXPATHLEN; 533 break; 534 } 535 if (!*p) { 536 new->e_argv[cnt] = *argv; 537 new->e_len[cnt] = 0; 538 } 539 } 540 new->e_argv[cnt] = new->e_orig[cnt] = NULL; 541 542 *argvp = argv + 1; 543 return new; 544} 545 546int 547f_flags(plan, entry) 548 PLAN *plan; 549 FTSENT *entry; 550{ 551 u_long flags; 552 553 flags = entry->fts_statp->st_flags; 554 if (plan->flags & F_ATLEAST) 555 return (flags | plan->fl_flags) == flags && 556 !(flags & plan->fl_notflags); 557 else if (plan->flags & F_ANY) 558 return (flags & plan->fl_flags) || 559 (flags | plan->fl_notflags) != flags; 560 else 561 return flags == plan->fl_flags && 562 !(plan->fl_flags & plan->fl_notflags); 563} 564 565PLAN * 566c_flags(option, argvp) 567 OPTION *option; 568 char ***argvp; 569{ 570 char *flags_str; 571 PLAN *new; 572 u_long flags, notflags; 573 574 flags_str = nextarg(option, argvp); 575 ftsoptions &= ~FTS_NOSTAT; 576 577 new = palloc(option); 578 579 if (*flags_str == '-') { 580 new->flags |= F_ATLEAST; 581 flags_str++; 582 } else if (*flags_str == '+') { 583 new->flags |= F_ANY; 584 flags_str++; 585 } 586 if (strtofflags(&flags_str, &flags, ¬flags) == 1) 587 errx(1, "%s: %s: illegal flags string", option->name, flags_str); 588 589 new->fl_flags = flags; 590 new->fl_notflags = notflags; 591 return new; 592} 593 594/* 595 * -follow functions -- 596 * 597 * Always true, causes symbolic links to be followed on a global 598 * basis. 599 */ 600PLAN * 601c_follow(option, argvp) 602 OPTION *option; 603 char ***argvp; 604{ 605 ftsoptions &= ~FTS_PHYSICAL; 606 ftsoptions |= FTS_LOGICAL; 607 608 return palloc(option); 609} 610 611/* 612 * -fstype functions -- 613 * 614 * True if the file is of a certain type. 615 */ 616int 617f_fstype(plan, entry) 618 PLAN *plan; 619 FTSENT *entry; 620{ 621 static dev_t curdev; /* need a guaranteed illegal dev value */ 622 static int first = 1; 623 struct statfs sb; 624 static int val_type, val_flags; 625 char *p, save[2]; 626 627 if ((plan->flags & F_MTMASK) == F_MTUNKNOWN) 628 return 0; 629 630 /* Only check when we cross mount point. */ 631 if (first || curdev != entry->fts_statp->st_dev) { 632 curdev = entry->fts_statp->st_dev; 633 634 /* 635 * Statfs follows symlinks; find wants the link's file system, 636 * not where it points. 637 */ 638 if (entry->fts_info == FTS_SL || 639 entry->fts_info == FTS_SLNONE) { 640 if ((p = strrchr(entry->fts_accpath, '/')) != NULL) 641 ++p; 642 else 643 p = entry->fts_accpath; 644 save[0] = p[0]; 645 p[0] = '.'; 646 save[1] = p[1]; 647 p[1] = '\0'; 648 } else 649 p = NULL; 650 651 if (statfs(entry->fts_accpath, &sb)) 652 err(1, "%s", entry->fts_accpath); 653 654 if (p) { 655 p[0] = save[0]; 656 p[1] = save[1]; 657 } 658 659 first = 0; 660 661 /* 662 * Further tests may need both of these values, so 663 * always copy both of them. 664 */ 665 val_flags = sb.f_flags; 666 val_type = sb.f_type; 667 } 668 switch (plan->flags & F_MTMASK) { 669 case F_MTFLAG: 670 return val_flags & plan->mt_data; 671 case F_MTTYPE: 672 return val_type == plan->mt_data; 673 default: 674 abort(); 675 } 676} 677 678#if !defined(__NetBSD__) 679PLAN * 680c_fstype(option, argvp) 681 OPTION *option; 682 char ***argvp; 683{ 684 char *fsname; 685 register PLAN *new; 686 struct vfsconf vfc; 687 688 fsname = nextarg(option, argvp); 689 ftsoptions &= ~FTS_NOSTAT; 690 691 new = palloc(option); 692 693 /* 694 * Check first for a filesystem name. 695 */ 696 if (getvfsbyname(fsname, &vfc) == 0) { 697 new->flags |= F_MTTYPE; 698 new->mt_data = vfc.vfc_typenum; 699 return new; 700 } 701 702 switch (*fsname) { 703 case 'l': 704 if (!strcmp(fsname, "local")) { 705 new->flags |= F_MTFLAG; 706 new->mt_data = MNT_LOCAL; 707 return new; 708 } 709 break; 710 case 'r': 711 if (!strcmp(fsname, "rdonly")) { 712 new->flags |= F_MTFLAG; 713 new->mt_data = MNT_RDONLY; 714 return new; 715 } 716 break; 717 } 718 719 /* 720 * We need to make filesystem checks for filesystems 721 * that exists but aren't in the kernel work. 722 */ 723 fprintf(stderr, "Warning: Unknown filesystem type %s\n", fsname); 724 new->flags |= F_MTUNKNOWN; 725 return new; 726} 727#endif /* __NetBSD__ */ 728 729/* 730 * -group gname functions -- 731 * 732 * True if the file belongs to the group gname. If gname is numeric and 733 * an equivalent of the getgrnam() function does not return a valid group 734 * name, gname is taken as a group ID. 735 */ 736int 737f_group(plan, entry) 738 PLAN *plan; 739 FTSENT *entry; 740{ 741 return entry->fts_statp->st_gid == plan->g_data; 742} 743 744PLAN * 745c_group(option, argvp) 746 OPTION *option; 747 char ***argvp; 748{ 749 char *gname; 750 PLAN *new; 751 struct group *g; 752 gid_t gid; 753 754 gname = nextarg(option, argvp); 755 ftsoptions &= ~FTS_NOSTAT; 756 757 g = getgrnam(gname); 758 if (g == NULL) { 759 gid = atoi(gname); 760 if (gid == 0 && gname[0] != '0') 761 errx(1, "%s: %s: no such group", option->name, gname); 762 } else 763 gid = g->gr_gid; 764 765 new = palloc(option); 766 new->g_data = gid; 767 return new; 768} 769 770/* 771 * -inum n functions -- 772 * 773 * True if the file has inode # n. 774 */ 775int 776f_inum(plan, entry) 777 PLAN *plan; 778 FTSENT *entry; 779{ 780 COMPARE(entry->fts_statp->st_ino, plan->i_data); 781} 782 783PLAN * 784c_inum(option, argvp) 785 OPTION *option; 786 char ***argvp; 787{ 788 char *inum_str; 789 PLAN *new; 790 791 inum_str = nextarg(option, argvp); 792 ftsoptions &= ~FTS_NOSTAT; 793 794 new = palloc(option); 795 new->i_data = find_parsenum(new, option->name, inum_str, NULL); 796 return new; 797} 798 799/* 800 * -links n functions -- 801 * 802 * True if the file has n links. 803 */ 804int 805f_links(plan, entry) 806 PLAN *plan; 807 FTSENT *entry; 808{ 809 COMPARE(entry->fts_statp->st_nlink, plan->l_data); 810} 811 812PLAN * 813c_links(option, argvp) 814 OPTION *option; 815 char ***argvp; 816{ 817 char *nlinks; 818 PLAN *new; 819 820 nlinks = nextarg(option, argvp); 821 ftsoptions &= ~FTS_NOSTAT; 822 823 new = palloc(option); 824 new->l_data = (nlink_t)find_parsenum(new, option->name, nlinks, NULL); 825 return new; 826} 827 828/* 829 * -ls functions -- 830 * 831 * Always true - prints the current entry to stdout in "ls" format. 832 */ 833int 834f_ls(plan, entry) 835 PLAN *plan; 836 FTSENT *entry; 837{ 838 printlong(entry->fts_path, entry->fts_accpath, entry->fts_statp); 839 return 1; 840} 841 842PLAN * 843c_ls(option, argvp) 844 OPTION *option; 845 char ***argvp; 846{ 847 ftsoptions &= ~FTS_NOSTAT; 848 isoutput = 1; 849 850 return palloc(option); 851} 852 853/* 854 * -name functions -- 855 * 856 * True if the basename of the filename being examined 857 * matches pattern using Pattern Matching Notation S3.14 858 */ 859int 860f_name(plan, entry) 861 PLAN *plan; 862 FTSENT *entry; 863{ 864 return !fnmatch(plan->c_data, entry->fts_name, 865 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 866} 867 868PLAN * 869c_name(option, argvp) 870 OPTION *option; 871 char ***argvp; 872{ 873 char *pattern; 874 PLAN *new; 875 876 pattern = nextarg(option, argvp); 877 new = palloc(option); 878 new->c_data = pattern; 879 return new; 880} 881 882/* 883 * -newer file functions -- 884 * 885 * True if the current file has been modified more recently 886 * then the modification time of the file named by the pathname 887 * file. 888 */ 889int 890f_newer(plan, entry) 891 PLAN *plan; 892 FTSENT *entry; 893{ 894 if (plan->flags & F_TIME_C) 895 return entry->fts_statp->st_ctime > plan->t_data; 896 else if (plan->flags & F_TIME_A) 897 return entry->fts_statp->st_atime > plan->t_data; 898 else 899 return entry->fts_statp->st_mtime > plan->t_data; 900} 901 902PLAN * 903c_newer(option, argvp) 904 OPTION *option; 905 char ***argvp; 906{ 907 char *fn_or_tspec; 908 PLAN *new; 909 struct stat sb; 910 911 fn_or_tspec = nextarg(option, argvp); 912 ftsoptions &= ~FTS_NOSTAT; 913 914 new = palloc(option); 915 /* compare against what */ 916 if (option->flags & F_TIME2_T) { 917 new->t_data = get_date(fn_or_tspec, (struct timeb *) 0); 918 if (new->t_data == (time_t) -1) 919 errx(1, "Can't parse date/time: %s", fn_or_tspec); 920 } else { 921 if (stat(fn_or_tspec, &sb)) 922 err(1, "%s", fn_or_tspec); 923 if (option->flags & F_TIME2_C) 924 new->t_data = sb.st_ctime; 925 else if (option->flags & F_TIME2_A) 926 new->t_data = sb.st_atime; 927 else 928 new->t_data = sb.st_mtime; 929 } 930 return new; 931} 932 933/* 934 * -nogroup functions -- 935 * 936 * True if file belongs to a user ID for which the equivalent 937 * of the getgrnam() 9.2.1 [POSIX.1] function returns NULL. 938 */ 939int 940f_nogroup(plan, entry) 941 PLAN *plan; 942 FTSENT *entry; 943{ 944 return group_from_gid(entry->fts_statp->st_gid, 1) == NULL; 945} 946 947PLAN * 948c_nogroup(option, argvp) 949 OPTION *option; 950 char ***argvp; 951{ 952 ftsoptions &= ~FTS_NOSTAT; 953 954 return palloc(option); 955} 956 957/* 958 * -nouser functions -- 959 * 960 * True if file belongs to a user ID for which the equivalent 961 * of the getpwuid() 9.2.2 [POSIX.1] function returns NULL. 962 */ 963int 964f_nouser(plan, entry) 965 PLAN *plan; 966 FTSENT *entry; 967{ 968 return user_from_uid(entry->fts_statp->st_uid, 1) == NULL; 969} 970 971PLAN * 972c_nouser(option, argvp) 973 OPTION *option; 974 char ***argvp; 975{ 976 ftsoptions &= ~FTS_NOSTAT; 977 978 return palloc(option); 979} 980 981/* 982 * -path functions -- 983 * 984 * True if the path of the filename being examined 985 * matches pattern using Pattern Matching Notation S3.14 986 */ 987int 988f_path(plan, entry) 989 PLAN *plan; 990 FTSENT *entry; 991{ 992 return !fnmatch(plan->c_data, entry->fts_path, 993 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 994} 995 996/* c_path is the same as c_name */ 997 998/* 999 * -perm functions -- 1000 * 1001 * The mode argument is used to represent file mode bits. If it starts 1002 * with a leading digit, it's treated as an octal mode, otherwise as a 1003 * symbolic mode. 1004 */ 1005int 1006f_perm(plan, entry) 1007 PLAN *plan; 1008 FTSENT *entry; 1009{ 1010 mode_t mode; 1011 1012 mode = entry->fts_statp->st_mode & 1013 (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO); 1014 if (plan->flags & F_ATLEAST) 1015 return (plan->m_data | mode) == mode; 1016 else if (plan->flags & F_ANY) 1017 return (mode & plan->m_data); 1018 else 1019 return mode == plan->m_data; 1020 /* NOTREACHED */ 1021} 1022 1023PLAN * 1024c_perm(option, argvp) 1025 OPTION *option; 1026 char ***argvp; 1027{ 1028 char *perm; 1029 PLAN *new; 1030 mode_t *set; 1031 1032 perm = nextarg(option, argvp); 1033 ftsoptions &= ~FTS_NOSTAT; 1034 1035 new = palloc(option); 1036 1037 if (*perm == '-') { 1038 new->flags |= F_ATLEAST; 1039 ++perm; 1040 } else if (*perm == '+') { 1041 new->flags |= F_ANY; 1042 ++perm; 1043 } 1044 1045 if ((set = setmode(perm)) == NULL) 1046 errx(1, "%s: %s: illegal mode string", option->name, perm); 1047 1048 new->m_data = getmode(set, 0); 1049 free(set); 1050 return new; 1051} 1052 1053/* 1054 * -print functions -- 1055 * 1056 * Always true, causes the current pathame to be written to 1057 * standard output. 1058 */ 1059int 1060f_print(plan, entry) 1061 PLAN *plan; 1062 FTSENT *entry; 1063{ 1064 (void)puts(entry->fts_path); 1065 return 1; 1066} 1067 1068PLAN * 1069c_print(option, argvp) 1070 OPTION *option; 1071 char ***argvp; 1072{ 1073 isoutput = 1; 1074 1075 return palloc(option); 1076} 1077 1078/* 1079 * -print0 functions -- 1080 * 1081 * Always true, causes the current pathame to be written to 1082 * standard output followed by a NUL character 1083 */ 1084int 1085f_print0(plan, entry) 1086 PLAN *plan; 1087 FTSENT *entry; 1088{ 1089 fputs(entry->fts_path, stdout); 1090 fputc('\0', stdout); 1091 return 1; 1092} 1093 1094/* c_print0 is the same as c_print */ 1095 1096/* 1097 * -prune functions -- 1098 * 1099 * Prune a portion of the hierarchy. 1100 */ 1101int 1102f_prune(plan, entry) 1103 PLAN *plan; 1104 FTSENT *entry; 1105{ 1106 extern FTS *tree; 1107 1108 if (fts_set(tree, entry, FTS_SKIP)) 1109 err(1, "%s", entry->fts_path); 1110 return 1; 1111} 1112 1113/* c_prune == c_simple */ 1114 1115/* 1116 * -regex functions -- 1117 * 1118 * True if the whole path of the file matches pattern using 1119 * regular expression. 1120 */ 1121int 1122f_regex(plan, entry) 1123 PLAN *plan; 1124 FTSENT *entry; 1125{ 1126 char *str; 1127 size_t len; 1128 regex_t *pre; 1129 regmatch_t pmatch; 1130 int errcode; 1131 char errbuf[LINE_MAX]; 1132 int matched; 1133 1134 pre = plan->re_data; 1135 str = entry->fts_path; 1136 len = strlen(str); 1137 matched = 0; 1138 1139 pmatch.rm_so = 0; 1140 pmatch.rm_eo = len; 1141 1142 errcode = regexec(pre, str, 1, &pmatch, REG_STARTEND); 1143 1144 if (errcode != 0 && errcode != REG_NOMATCH) { 1145 regerror(errcode, pre, errbuf, sizeof errbuf); 1146 errx(1, "%s: %s", 1147 plan->flags & F_IGNCASE ? "-iregex" : "-regex", errbuf); 1148 } 1149 1150 if (errcode == 0 && pmatch.rm_so == 0 && pmatch.rm_eo == len) 1151 matched = 1; 1152 1153 return matched; 1154} 1155 1156PLAN * 1157c_regex(option, argvp) 1158 OPTION *option; 1159 char ***argvp; 1160{ 1161 PLAN *new; 1162 char *pattern; 1163 regex_t *pre; 1164 int errcode; 1165 char errbuf[LINE_MAX]; 1166 1167 if ((pre = malloc(sizeof(regex_t))) == NULL) 1168 err(1, NULL); 1169 1170 pattern = nextarg(option, argvp); 1171 1172 if ((errcode = regcomp(pre, pattern, 1173 regexp_flags | (option->flags & F_IGNCASE ? REG_ICASE : 0))) != 0) { 1174 regerror(errcode, pre, errbuf, sizeof errbuf); 1175 errx(1, "%s: %s: %s", 1176 option->flags & F_IGNCASE ? "-iregex" : "-regex", 1177 pattern, errbuf); 1178 } 1179 1180 new = palloc(option); 1181 new->re_data = pre; 1182 1183 return new; 1184} 1185 1186/* c_simple covers c_prune, c_openparen, c_closeparen, c_not, c_or */ 1187 1188PLAN * 1189c_simple(option, argvp) 1190 OPTION *option; 1191 char ***argvp; 1192{ 1193 return palloc(option); 1194} 1195 1196/* 1197 * -size n[c] functions -- 1198 * 1199 * True if the file size in bytes, divided by an implementation defined 1200 * value and rounded up to the next integer, is n. If n is followed by 1201 * a c, the size is in bytes. 1202 */ 1203#define FIND_SIZE 512 1204static int divsize = 1; 1205 1206int 1207f_size(plan, entry) 1208 PLAN *plan; 1209 FTSENT *entry; 1210{ 1211 off_t size; 1212 1213 size = divsize ? (entry->fts_statp->st_size + FIND_SIZE - 1) / 1214 FIND_SIZE : entry->fts_statp->st_size; 1215 COMPARE(size, plan->o_data); 1216} 1217 1218PLAN * 1219c_size(option, argvp) 1220 OPTION *option; 1221 char ***argvp; 1222{ 1223 char *size_str; 1224 PLAN *new; 1225 char endch; 1226 1227 size_str = nextarg(option, argvp); 1228 ftsoptions &= ~FTS_NOSTAT; 1229 1230 new = palloc(option); 1231 endch = 'c'; 1232 new->o_data = find_parsenum(new, option->name, size_str, &endch); 1233 if (endch == 'c') 1234 divsize = 0; 1235 return new; 1236} 1237 1238/* 1239 * -type c functions -- 1240 * 1241 * True if the type of the file is c, where c is b, c, d, p, f or w 1242 * for block special file, character special file, directory, FIFO, 1243 * regular file or whiteout respectively. 1244 */ 1245int 1246f_type(plan, entry) 1247 PLAN *plan; 1248 FTSENT *entry; 1249{ 1250 return (entry->fts_statp->st_mode & S_IFMT) == plan->m_data; 1251} 1252 1253PLAN * 1254c_type(option, argvp) 1255 OPTION *option; 1256 char ***argvp; 1257{ 1258 char *typestring; 1259 PLAN *new; 1260 mode_t mask; 1261 1262 typestring = nextarg(option, argvp); 1263 ftsoptions &= ~FTS_NOSTAT; 1264 1265 switch (typestring[0]) { 1266 case 'b': 1267 mask = S_IFBLK; 1268 break; 1269 case 'c': 1270 mask = S_IFCHR; 1271 break; 1272 case 'd': 1273 mask = S_IFDIR; 1274 break; 1275 case 'f': 1276 mask = S_IFREG; 1277 break; 1278 case 'l': 1279 mask = S_IFLNK; 1280 break; 1281 case 'p': 1282 mask = S_IFIFO; 1283 break; 1284 case 's': 1285 mask = S_IFSOCK; 1286 break; 1287#ifdef FTS_WHITEOUT 1288 case 'w': 1289 mask = S_IFWHT; 1290 ftsoptions |= FTS_WHITEOUT; 1291 break; 1292#endif /* FTS_WHITEOUT */ 1293 default: 1294 errx(1, "%s: %s: unknown type", option->name, typestring); 1295 } 1296 1297 new = palloc(option); 1298 new->m_data = mask; 1299 return new; 1300} 1301 1302/* 1303 * -user uname functions -- 1304 * 1305 * True if the file belongs to the user uname. If uname is numeric and 1306 * an equivalent of the getpwnam() S9.2.2 [POSIX.1] function does not 1307 * return a valid user name, uname is taken as a user ID. 1308 */ 1309int 1310f_user(plan, entry) 1311 PLAN *plan; 1312 FTSENT *entry; 1313{ 1314 return entry->fts_statp->st_uid == plan->u_data; 1315} 1316 1317PLAN * 1318c_user(option, argvp) 1319 OPTION *option; 1320 char ***argvp; 1321{ 1322 char *username; 1323 PLAN *new; 1324 struct passwd *p; 1325 uid_t uid; 1326 1327 username = nextarg(option, argvp); 1328 ftsoptions &= ~FTS_NOSTAT; 1329 1330 p = getpwnam(username); 1331 if (p == NULL) { 1332 uid = atoi(username); 1333 if (uid == 0 && username[0] != '0') 1334 errx(1, "%s: %s: no such user", option->name, username); 1335 } else 1336 uid = p->pw_uid; 1337 1338 new = palloc(option); 1339 new->u_data = uid; 1340 return new; 1341} 1342 1343/* 1344 * -xdev functions -- 1345 * 1346 * Always true, causes find not to decend past directories that have a 1347 * different device ID (st_dev, see stat() S5.6.2 [POSIX.1]) 1348 */ 1349PLAN * 1350c_xdev(option, argvp) 1351 OPTION *option; 1352 char ***argvp; 1353{ 1354 ftsoptions |= FTS_XDEV; 1355 1356 return palloc(option); 1357} 1358 1359/* 1360 * ( expression ) functions -- 1361 * 1362 * True if expression is true. 1363 */ 1364int 1365f_expr(plan, entry) 1366 PLAN *plan; 1367 FTSENT *entry; 1368{ 1369 register PLAN *p; 1370 register int state = 0; 1371 1372 for (p = plan->p_data[0]; 1373 p && (state = (p->execute)(p, entry)); p = p->next); 1374 return state; 1375} 1376 1377/* 1378 * f_openparen and f_closeparen nodes are temporary place markers. They are 1379 * eliminated during phase 2 of find_formplan() --- the '(' node is converted 1380 * to a f_expr node containing the expression and the ')' node is discarded. 1381 * The functions themselves are only used as constants. 1382 */ 1383 1384int 1385f_openparen(plan, entry) 1386 PLAN *plan; 1387 FTSENT *entry; 1388{ 1389 abort(); 1390} 1391 1392int 1393f_closeparen(plan, entry) 1394 PLAN *plan; 1395 FTSENT *entry; 1396{ 1397 abort(); 1398} 1399 1400/* c_openparen == c_simple */ 1401/* c_closeparen == c_simple */ 1402 1403/* 1404 * AND operator. Since AND is implicit, no node is allocated. 1405 */ 1406PLAN * 1407c_and(option, argvp) 1408 OPTION *option; 1409 char ***argvp; 1410{ 1411 return NULL; 1412} 1413 1414/* 1415 * ! expression functions -- 1416 * 1417 * Negation of a primary; the unary NOT operator. 1418 */ 1419int 1420f_not(plan, entry) 1421 PLAN *plan; 1422 FTSENT *entry; 1423{ 1424 register PLAN *p; 1425 register int state = 0; 1426 1427 for (p = plan->p_data[0]; 1428 p && (state = (p->execute)(p, entry)); p = p->next); 1429 return !state; 1430} 1431 1432/* c_not == c_simple */ 1433 1434/* 1435 * expression -o expression functions -- 1436 * 1437 * Alternation of primaries; the OR operator. The second expression is 1438 * not evaluated if the first expression is true. 1439 */ 1440int 1441f_or(plan, entry) 1442 PLAN *plan; 1443 FTSENT *entry; 1444{ 1445 register PLAN *p; 1446 register int state = 0; 1447 1448 for (p = plan->p_data[0]; 1449 p && (state = (p->execute)(p, entry)); p = p->next); 1450 1451 if (state) 1452 return 1; 1453 1454 for (p = plan->p_data[1]; 1455 p && (state = (p->execute)(p, entry)); p = p->next); 1456 return state; 1457} 1458 1459/* c_or == c_simple */ 1460