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) == NULL) 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.tv_sec); 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.tv_sec); 259 } else if (plan->flags & F_TIME_A) { 260 COMPARE((now - entry->fts_statp->st_atime + 261 60 - 1) / 60, plan->t_data.tv_sec); 262 } else if (plan->flags & F_TIME_B) { 263 COMPARE((now - entry->fts_statp->st_birthtime + 264 60 - 1) / 60, plan->t_data.tv_sec); 265 } else { 266 COMPARE((now - entry->fts_statp->st_mtime + 267 60 - 1) / 60, plan->t_data.tv_sec); 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.tv_sec = find_parsenum(new, option->name, nmins, NULL); 282 new->t_data.tv_nsec = 0; 283 TIME_CORRECT(new); 284 return new; 285 } 286 287 /* 288 * -[acm]time n functions -- 289 * 290 * True if the difference between the 291 * file access time (-atime) 292 * file birth time (-Btime) 293 * last change of file status information (-ctime) 294 * file modification time (-mtime) 295 * and the current time is n 24 hour periods. 296 */ 297 298 int 299 f_Xtime(PLAN *plan, FTSENT *entry) 300 { 301 time_t xtime; 302 303 if (plan->flags & F_TIME_A) 304 xtime = entry->fts_statp->st_atime; 305 else if (plan->flags & F_TIME_B) 306 xtime = entry->fts_statp->st_birthtime; 307 else if (plan->flags & F_TIME_C) 308 xtime = entry->fts_statp->st_ctime; 309 else 310 xtime = entry->fts_statp->st_mtime; 311 312 if (plan->flags & F_EXACTTIME) 313 COMPARE(now - xtime, plan->t_data.tv_sec); 314 else 315 COMPARE((now - xtime + 86400 - 1) / 86400, plan->t_data.tv_sec); 316 } 317 318 PLAN * 319 c_Xtime(OPTION *option, char ***argvp) 320 { 321 char *value; 322 PLAN *new; 323 324 value = nextarg(option, argvp); 325 ftsoptions &= ~FTS_NOSTAT; 326 327 new = palloc(option); 328 new->t_data.tv_sec = find_parsetime(new, option->name, value); 329 new->t_data.tv_nsec = 0; 330 if (!(new->flags & F_EXACTTIME)) 331 TIME_CORRECT(new); 332 return new; 333 } 334 335 /* 336 * -maxdepth/-mindepth n functions -- 337 * 338 * Does the same as -prune if the level of the current file is 339 * greater/less than the specified maximum/minimum depth. 340 * 341 * Note that -maxdepth and -mindepth are handled specially in 342 * find_execute() so their f_* functions are set to f_always_true(). 343 */ 344 PLAN * 345 c_mXXdepth(OPTION *option, char ***argvp) 346 { 347 char *dstr; 348 PLAN *new; 349 350 dstr = nextarg(option, argvp); 351 if (dstr[0] == '-') 352 /* all other errors handled by find_parsenum() */ 353 errx(1, "%s: %s: value must be positive", option->name, dstr); 354 355 new = palloc(option); 356 if (option->flags & F_MAXDEPTH) 357 maxdepth = find_parsenum(new, option->name, dstr, NULL); 358 else 359 mindepth = find_parsenum(new, option->name, dstr, NULL); 360 return new; 361 } 362 363 /* 364 * -acl function -- 365 * 366 * Show files with EXTENDED ACL attributes. 367 */ 368 int 369 f_acl(PLAN *plan __unused, FTSENT *entry) 370 { 371 acl_t facl; 372 acl_type_t acl_type; 373 int acl_supported = 0, ret, trivial; 374 375 if (S_ISLNK(entry->fts_statp->st_mode)) 376 return 0; 377 ret = pathconf(entry->fts_accpath, _PC_ACL_NFS4); 378 if (ret > 0) { 379 acl_supported = 1; 380 acl_type = ACL_TYPE_NFS4; 381 } else if (ret < 0 && errno != EINVAL) { 382 warn("%s", entry->fts_accpath); 383 return (0); 384 } 385 if (acl_supported == 0) { 386 ret = pathconf(entry->fts_accpath, _PC_ACL_EXTENDED); 387 if (ret > 0) { 388 acl_supported = 1; 389 acl_type = ACL_TYPE_ACCESS; 390 } else if (ret < 0 && errno != EINVAL) { 391 warn("%s", entry->fts_accpath); 392 return (0); 393 } 394 } 395 if (acl_supported == 0) 396 return (0); 397 398 facl = acl_get_file(entry->fts_accpath, acl_type); 399 if (facl == NULL) { 400 warn("%s", entry->fts_accpath); 401 return (0); 402 } 403 ret = acl_is_trivial_np(facl, &trivial); 404 acl_free(facl); 405 if (ret) { 406 warn("%s", entry->fts_accpath); 407 return (0); 408 } 409 if (trivial) 410 return (0); 411 return (1); 412 } 413 414 PLAN * 415 c_acl(OPTION *option, char ***argvp __unused) 416 { 417 ftsoptions &= ~FTS_NOSTAT; 418 return (palloc(option)); 419 } 420 421 /* 422 * -delete functions -- 423 * 424 * True always. Makes its best shot and continues on regardless. 425 */ 426 int 427 f_delete(PLAN *plan __unused, FTSENT *entry) 428 { 429 /* ignore these from fts */ 430 if (strcmp(entry->fts_accpath, ".") == 0 || 431 strcmp(entry->fts_accpath, "..") == 0) 432 return 1; 433 434 /* sanity check */ 435 if (isdepth == 0 || /* depth off */ 436 (ftsoptions & FTS_NOSTAT)) /* not stat()ing */ 437 errx(1, "-delete: insecure options got turned on"); 438 439 if (!(ftsoptions & FTS_PHYSICAL) || /* physical off */ 440 (ftsoptions & FTS_LOGICAL)) /* or finally, logical on */ 441 errx(1, "-delete: forbidden when symlinks are followed"); 442 443 /* Potentially unsafe - do not accept relative paths whatsoever */ 444 if (entry->fts_level > FTS_ROOTLEVEL && 445 strchr(entry->fts_accpath, '/') != NULL) 446 errx(1, "-delete: %s: relative path potentially not safe", 447 entry->fts_accpath); 448 449 /* Turn off user immutable bits if running as root */ 450 if ((entry->fts_statp->st_flags & (UF_APPEND|UF_IMMUTABLE)) && 451 !(entry->fts_statp->st_flags & (SF_APPEND|SF_IMMUTABLE)) && 452 geteuid() == 0) 453 lchflags(entry->fts_accpath, 454 entry->fts_statp->st_flags &= ~(UF_APPEND|UF_IMMUTABLE)); 455 456 /* rmdir directories, unlink everything else */ 457 if (S_ISDIR(entry->fts_statp->st_mode)) { 458 if (rmdir(entry->fts_accpath) < 0 && errno != ENOTEMPTY) 459 warn("-delete: rmdir(%s)", entry->fts_path); 460 } else { 461 if (unlink(entry->fts_accpath) < 0) 462 warn("-delete: unlink(%s)", entry->fts_path); 463 } 464 465 /* "succeed" */ 466 return 1; 467 } 468 469 PLAN * 470 c_delete(OPTION *option, char ***argvp __unused) 471 { 472 473 ftsoptions &= ~FTS_NOSTAT; /* no optimise */ 474 isoutput = 1; /* possible output */ 475 isdepth = 1; /* -depth implied */ 476 477 /* 478 * Try to avoid the confusing error message about relative paths 479 * being potentially not safe. 480 */ 481 if (ftsoptions & FTS_NOCHDIR) 482 errx(1, "%s: forbidden when the current directory cannot be opened", 483 "-delete"); 484 485 return palloc(option); 486 } 487 488 489 /* 490 * always_true -- 491 * 492 * Always true, used for -maxdepth, -mindepth, -xdev, -follow, and -true 493 */ 494 int 495 f_always_true(PLAN *plan __unused, FTSENT *entry __unused) 496 { 497 return 1; 498 } 499 500 /* 501 * -depth functions -- 502 * 503 * With argument: True if the file is at level n. 504 * Without argument: Always true, causes descent of the directory hierarchy 505 * to be done so that all entries in a directory are acted on before the 506 * directory itself. 507 */ 508 int 509 f_depth(PLAN *plan, FTSENT *entry) 510 { 511 if (plan->flags & F_DEPTH) 512 COMPARE(entry->fts_level, plan->d_data); 513 else 514 return 1; 515 } 516 517 PLAN * 518 c_depth(OPTION *option, char ***argvp) 519 { 520 PLAN *new; 521 char *str; 522 523 new = palloc(option); 524 525 str = **argvp; 526 if (str && !(new->flags & F_DEPTH)) { 527 /* skip leading + or - */ 528 if (*str == '+' || *str == '-') 529 str++; 530 /* skip sign */ 531 if (*str == '+' || *str == '-') 532 str++; 533 if (isdigit(*str)) 534 new->flags |= F_DEPTH; 535 } 536 537 if (new->flags & F_DEPTH) { /* -depth n */ 538 char *ndepth; 539 540 ndepth = nextarg(option, argvp); 541 new->d_data = find_parsenum(new, option->name, ndepth, NULL); 542 } else { /* -d */ 543 isdepth = 1; 544 } 545 546 return new; 547 } 548 549 /* 550 * -empty functions -- 551 * 552 * True if the file or directory is empty 553 */ 554 int 555 f_empty(PLAN *plan __unused, FTSENT *entry) 556 { 557 if (S_ISREG(entry->fts_statp->st_mode) && 558 entry->fts_statp->st_size == 0) 559 return 1; 560 if (S_ISDIR(entry->fts_statp->st_mode)) { 561 struct dirent *dp; 562 int empty; 563 DIR *dir; 564 565 empty = 1; 566 dir = opendir(entry->fts_accpath); 567 if (dir == NULL) 568 return 0; 569 for (dp = readdir(dir); dp; dp = readdir(dir)) 570 if (dp->d_name[0] != '.' || 571 (dp->d_name[1] != '\0' && 572 (dp->d_name[1] != '.' || dp->d_name[2] != '\0'))) { 573 empty = 0; 574 break; 575 } 576 closedir(dir); 577 return empty; 578 } 579 return 0; 580 } 581 582 PLAN * 583 c_empty(OPTION *option, char ***argvp __unused) 584 { 585 ftsoptions &= ~FTS_NOSTAT; 586 587 return palloc(option); 588 } 589 590 /* 591 * [-exec | -execdir | -ok] utility [arg ... ] ; functions -- 592 * 593 * True if the executed utility returns a zero value as exit status. 594 * The end of the primary expression is delimited by a semicolon. If 595 * "{}" occurs anywhere, it gets replaced by the current pathname, 596 * or, in the case of -execdir, the current basename (filename 597 * without leading directory prefix). For -exec and -ok, 598 * the current directory for the execution of utility is the same as 599 * the current directory when the find utility was started, whereas 600 * for -execdir, it is the directory the file resides in. 601 * 602 * The primary -ok differs from -exec in that it requests affirmation 603 * of the user before executing the utility. 604 */ 605 int 606 f_exec(PLAN *plan, FTSENT *entry) 607 { 608 int cnt; 609 pid_t pid; 610 int status; 611 char *file; 612 613 if (entry == NULL && plan->flags & F_EXECPLUS) { 614 if (plan->e_ppos == plan->e_pbnum) 615 return (1); 616 plan->e_argv[plan->e_ppos] = NULL; 617 goto doexec; 618 } 619 620 /* XXX - if file/dir ends in '/' this will not work -- can it? */ 621 if ((plan->flags & F_EXECDIR) && \ 622 (file = strrchr(entry->fts_path, '/'))) 623 file++; 624 else 625 file = entry->fts_path; 626 627 if (plan->flags & F_EXECPLUS) { 628 if ((plan->e_argv[plan->e_ppos] = strdup(file)) == NULL) 629 err(1, NULL); 630 plan->e_len[plan->e_ppos] = strlen(file); 631 plan->e_psize += plan->e_len[plan->e_ppos]; 632 if (++plan->e_ppos < plan->e_pnummax && 633 plan->e_psize < plan->e_psizemax) 634 return (1); 635 plan->e_argv[plan->e_ppos] = NULL; 636 } else { 637 for (cnt = 0; plan->e_argv[cnt]; ++cnt) 638 if (plan->e_len[cnt]) 639 brace_subst(plan->e_orig[cnt], 640 &plan->e_argv[cnt], file, 641 plan->e_len[cnt]); 642 } 643 644 doexec: if ((plan->flags & F_NEEDOK) && !queryuser(plan->e_argv)) 645 return 0; 646 647 /* make sure find output is interspersed correctly with subprocesses */ 648 fflush(stdout); 649 fflush(stderr); 650 651 switch (pid = fork()) { 652 case -1: 653 err(1, "fork"); 654 /* NOTREACHED */ 655 case 0: 656 /* change dir back from where we started */ 657 if (!(plan->flags & F_EXECDIR) && 658 !(ftsoptions & FTS_NOCHDIR) && fchdir(dotfd)) { 659 warn("chdir"); 660 _exit(1); 661 } 662 execvp(plan->e_argv[0], plan->e_argv); 663 warn("%s", plan->e_argv[0]); 664 _exit(1); 665 } 666 if (plan->flags & F_EXECPLUS) { 667 while (--plan->e_ppos >= plan->e_pbnum) 668 free(plan->e_argv[plan->e_ppos]); 669 plan->e_ppos = plan->e_pbnum; 670 plan->e_psize = plan->e_pbsize; 671 } 672 pid = waitpid(pid, &status, 0); 673 if (pid != -1 && WIFEXITED(status) && !WEXITSTATUS(status)) 674 return (1); 675 if (plan->flags & F_EXECPLUS) { 676 exitstatus = 1; 677 return (1); 678 } 679 return (0); 680 } 681 682 /* 683 * c_exec, c_execdir, c_ok -- 684 * build three parallel arrays, one with pointers to the strings passed 685 * on the command line, one with (possibly duplicated) pointers to the 686 * argv array, and one with integer values that are lengths of the 687 * strings, but also flags meaning that the string has to be massaged. 688 */ 689 PLAN * 690 c_exec(OPTION *option, char ***argvp) 691 { 692 PLAN *new; /* node returned */ 693 long argmax; 694 int cnt, i; 695 char **argv, **ap, **ep, *p; 696 697 /* This would defeat -execdir's intended security. */ 698 if (option->flags & F_EXECDIR && ftsoptions & FTS_NOCHDIR) 699 errx(1, "%s: forbidden when the current directory cannot be opened", 700 "-execdir"); 701 702 /* XXX - was in c_execdir, but seems unnecessary!? 703 ftsoptions &= ~FTS_NOSTAT; 704 */ 705 isoutput = 1; 706 707 /* XXX - this is a change from the previous coding */ 708 new = palloc(option); 709 710 for (ap = argv = *argvp;; ++ap) { 711 if (!*ap) 712 errx(1, 713 "%s: no terminating \";\" or \"+\"", option->name); 714 if (**ap == ';') 715 break; 716 if (**ap == '+' && ap != argv && strcmp(*(ap - 1), "{}") == 0) { 717 new->flags |= F_EXECPLUS; 718 break; 719 } 720 } 721 722 if (ap == argv) 723 errx(1, "%s: no command specified", option->name); 724 725 cnt = ap - *argvp + 1; 726 if (new->flags & F_EXECPLUS) { 727 new->e_ppos = new->e_pbnum = cnt - 2; 728 if ((argmax = sysconf(_SC_ARG_MAX)) == -1) { 729 warn("sysconf(_SC_ARG_MAX)"); 730 argmax = _POSIX_ARG_MAX; 731 } 732 argmax -= 1024; 733 for (ep = environ; *ep != NULL; ep++) 734 argmax -= strlen(*ep) + 1 + sizeof(*ep); 735 argmax -= 1 + sizeof(*ep); 736 /* 737 * Ensure that -execdir ... {} + does not mix files 738 * from different directories in one invocation. 739 * Files from the same directory should be handled 740 * in one invocation but there is no code for it. 741 */ 742 new->e_pnummax = new->flags & F_EXECDIR ? 1 : argmax / 16; 743 argmax -= sizeof(char *) * new->e_pnummax; 744 if (argmax <= 0) 745 errx(1, "no space for arguments"); 746 new->e_psizemax = argmax; 747 new->e_pbsize = 0; 748 cnt += new->e_pnummax + 1; 749 new->e_next = lastexecplus; 750 lastexecplus = new; 751 } 752 if ((new->e_argv = malloc(cnt * sizeof(char *))) == NULL) 753 err(1, NULL); 754 if ((new->e_orig = malloc(cnt * sizeof(char *))) == NULL) 755 err(1, NULL); 756 if ((new->e_len = malloc(cnt * sizeof(int))) == NULL) 757 err(1, NULL); 758 759 for (argv = *argvp, cnt = 0; argv < ap; ++argv, ++cnt) { 760 new->e_orig[cnt] = *argv; 761 if (new->flags & F_EXECPLUS) 762 new->e_pbsize += strlen(*argv) + 1; 763 for (p = *argv; *p; ++p) 764 if (!(new->flags & F_EXECPLUS) && p[0] == '{' && 765 p[1] == '}') { 766 if ((new->e_argv[cnt] = 767 malloc(MAXPATHLEN)) == NULL) 768 err(1, NULL); 769 new->e_len[cnt] = MAXPATHLEN; 770 break; 771 } 772 if (!*p) { 773 new->e_argv[cnt] = *argv; 774 new->e_len[cnt] = 0; 775 } 776 } 777 if (new->flags & F_EXECPLUS) { 778 new->e_psize = new->e_pbsize; 779 cnt--; 780 for (i = 0; i < new->e_pnummax; i++) { 781 new->e_argv[cnt] = NULL; 782 new->e_len[cnt] = 0; 783 cnt++; 784 } 785 argv = ap; 786 goto done; 787 } 788 new->e_argv[cnt] = new->e_orig[cnt] = NULL; 789 790 done: *argvp = argv + 1; 791 return new; 792 } 793 794 /* Finish any pending -exec ... {} + functions. */ 795 void 796 finish_execplus(void) 797 { 798 PLAN *p; 799 800 p = lastexecplus; 801 while (p != NULL) { 802 (p->execute)(p, NULL); 803 p = p->e_next; 804 } 805 } 806 807 int 808 f_flags(PLAN *plan, FTSENT *entry) 809 { 810 u_long flags; 811 812 flags = entry->fts_statp->st_flags; 813 if (plan->flags & F_ATLEAST) 814 return (flags | plan->fl_flags) == flags && 815 !(flags & plan->fl_notflags); 816 else if (plan->flags & F_ANY) 817 return (flags & plan->fl_flags) || 818 (flags | plan->fl_notflags) != flags; 819 else 820 return flags == plan->fl_flags && 821 !(plan->fl_flags & plan->fl_notflags); 822 } 823 824 PLAN * 825 c_flags(OPTION *option, char ***argvp) 826 { 827 char *flags_str; 828 PLAN *new; 829 u_long flags, notflags; 830 831 flags_str = nextarg(option, argvp); 832 ftsoptions &= ~FTS_NOSTAT; 833 834 new = palloc(option); 835 836 if (*flags_str == '-') { 837 new->flags |= F_ATLEAST; 838 flags_str++; 839 } else if (*flags_str == '+') { 840 new->flags |= F_ANY; 841 flags_str++; 842 } 843 if (strtofflags(&flags_str, &flags, ¬flags) == 1) 844 errx(1, "%s: %s: illegal flags string", option->name, flags_str); 845 846 new->fl_flags = flags; 847 new->fl_notflags = notflags; 848 return new; 849 } 850 851 /* 852 * -follow functions -- 853 * 854 * Always true, causes symbolic links to be followed on a global 855 * basis. 856 */ 857 PLAN * 858 c_follow(OPTION *option, char ***argvp __unused) 859 { 860 ftsoptions &= ~FTS_PHYSICAL; 861 ftsoptions |= FTS_LOGICAL; 862 863 return palloc(option); 864 } 865 866 /* 867 * -fstype functions -- 868 * 869 * True if the file is of a certain type. 870 */ 871 int 872 f_fstype(PLAN *plan, FTSENT *entry) 873 { 874 static dev_t curdev; /* need a guaranteed illegal dev value */ 875 static int first = 1; 876 struct statfs sb; 877 static int val_flags; 878 static char fstype[sizeof(sb.f_fstypename)]; 879 char *p, save[2] = {0,0}; 880 881 if ((plan->flags & F_MTMASK) == F_MTUNKNOWN) 882 return 0; 883 884 /* Only check when we cross mount point. */ 885 if (first || curdev != entry->fts_statp->st_dev) { 886 curdev = entry->fts_statp->st_dev; 887 888 /* 889 * Statfs follows symlinks; find wants the link's filesystem, 890 * not where it points. 891 */ 892 if (entry->fts_info == FTS_SL || 893 entry->fts_info == FTS_SLNONE) { 894 if ((p = strrchr(entry->fts_accpath, '/')) != NULL) 895 ++p; 896 else 897 p = entry->fts_accpath; 898 save[0] = p[0]; 899 p[0] = '.'; 900 save[1] = p[1]; 901 p[1] = '\0'; 902 } else 903 p = NULL; 904 905 if (statfs(entry->fts_accpath, &sb)) 906 err(1, "%s", entry->fts_accpath); 907 908 if (p) { 909 p[0] = save[0]; 910 p[1] = save[1]; 911 } 912 913 first = 0; 914 915 /* 916 * Further tests may need both of these values, so 917 * always copy both of them. 918 */ 919 val_flags = sb.f_flags; 920 strlcpy(fstype, sb.f_fstypename, sizeof(fstype)); 921 } 922 switch (plan->flags & F_MTMASK) { 923 case F_MTFLAG: 924 return val_flags & plan->mt_data; 925 case F_MTTYPE: 926 return (strncmp(fstype, plan->c_data, sizeof(fstype)) == 0); 927 default: 928 abort(); 929 } 930 } 931 932 PLAN * 933 c_fstype(OPTION *option, char ***argvp) 934 { 935 char *fsname; 936 PLAN *new; 937 938 fsname = nextarg(option, argvp); 939 ftsoptions &= ~FTS_NOSTAT; 940 941 new = palloc(option); 942 switch (*fsname) { 943 case 'l': 944 if (!strcmp(fsname, "local")) { 945 new->flags |= F_MTFLAG; 946 new->mt_data = MNT_LOCAL; 947 return new; 948 } 949 break; 950 case 'r': 951 if (!strcmp(fsname, "rdonly")) { 952 new->flags |= F_MTFLAG; 953 new->mt_data = MNT_RDONLY; 954 return new; 955 } 956 break; 957 } 958 959 new->flags |= F_MTTYPE; 960 new->c_data = fsname; 961 return new; 962 } 963 964 /* 965 * -group gname functions -- 966 * 967 * True if the file belongs to the group gname. If gname is numeric and 968 * an equivalent of the getgrnam() function does not return a valid group 969 * name, gname is taken as a group ID. 970 */ 971 int 972 f_group(PLAN *plan, FTSENT *entry) 973 { 974 COMPARE(entry->fts_statp->st_gid, plan->g_data); 975 } 976 977 PLAN * 978 c_group(OPTION *option, char ***argvp) 979 { 980 char *gname; 981 PLAN *new; 982 struct group *g; 983 gid_t gid; 984 985 gname = nextarg(option, argvp); 986 ftsoptions &= ~FTS_NOSTAT; 987 988 new = palloc(option); 989 g = getgrnam(gname); 990 if (g == NULL) { 991 char* cp = gname; 992 if (gname[0] == '-' || gname[0] == '+') 993 gname++; 994 gid = atoi(gname); 995 if (gid == 0 && gname[0] != '0') 996 errx(1, "%s: %s: no such group", option->name, gname); 997 gid = find_parsenum(new, option->name, cp, NULL); 998 } else 999 gid = g->gr_gid; 1000 1001 new->g_data = gid; 1002 return new; 1003 } 1004 1005 /* 1006 * -ignore_readdir_race functions -- 1007 * 1008 * Always true. Ignore errors which occur if a file or a directory 1009 * in a starting point gets deleted between reading the name and calling 1010 * stat on it while find is traversing the starting point. 1011 */ 1012 1013 PLAN * 1014 c_ignore_readdir_race(OPTION *option, char ***argvp __unused) 1015 { 1016 if (strcmp(option->name, "-ignore_readdir_race") == 0) 1017 ignore_readdir_race = 1; 1018 else 1019 ignore_readdir_race = 0; 1020 1021 return palloc(option); 1022 } 1023 1024 /* 1025 * -inum n functions -- 1026 * 1027 * True if the file has inode # n. 1028 */ 1029 int 1030 f_inum(PLAN *plan, FTSENT *entry) 1031 { 1032 COMPARE(entry->fts_statp->st_ino, plan->i_data); 1033 } 1034 1035 PLAN * 1036 c_inum(OPTION *option, char ***argvp) 1037 { 1038 char *inum_str; 1039 PLAN *new; 1040 1041 inum_str = nextarg(option, argvp); 1042 ftsoptions &= ~FTS_NOSTAT; 1043 1044 new = palloc(option); 1045 new->i_data = find_parsenum(new, option->name, inum_str, NULL); 1046 return new; 1047 } 1048 1049 /* 1050 * -samefile FN 1051 * 1052 * True if the file has the same inode (eg hard link) FN 1053 */ 1054 1055 /* f_samefile is just f_inum */ 1056 PLAN * 1057 c_samefile(OPTION *option, char ***argvp) 1058 { 1059 char *fn; 1060 PLAN *new; 1061 struct stat sb; 1062 1063 fn = nextarg(option, argvp); 1064 ftsoptions &= ~FTS_NOSTAT; 1065 1066 new = palloc(option); 1067 if (stat(fn, &sb)) 1068 err(1, "%s", fn); 1069 new->i_data = sb.st_ino; 1070 return new; 1071 } 1072 1073 /* 1074 * -links n functions -- 1075 * 1076 * True if the file has n links. 1077 */ 1078 int 1079 f_links(PLAN *plan, FTSENT *entry) 1080 { 1081 COMPARE(entry->fts_statp->st_nlink, plan->l_data); 1082 } 1083 1084 PLAN * 1085 c_links(OPTION *option, char ***argvp) 1086 { 1087 char *nlinks; 1088 PLAN *new; 1089 1090 nlinks = nextarg(option, argvp); 1091 ftsoptions &= ~FTS_NOSTAT; 1092 1093 new = palloc(option); 1094 new->l_data = (nlink_t)find_parsenum(new, option->name, nlinks, NULL); 1095 return new; 1096 } 1097 1098 /* 1099 * -ls functions -- 1100 * 1101 * Always true - prints the current entry to stdout in "ls" format. 1102 */ 1103 int 1104 f_ls(PLAN *plan __unused, FTSENT *entry) 1105 { 1106 printlong(entry->fts_path, entry->fts_accpath, entry->fts_statp); 1107 return 1; 1108 } 1109 1110 PLAN * 1111 c_ls(OPTION *option, char ***argvp __unused) 1112 { 1113 ftsoptions &= ~FTS_NOSTAT; 1114 isoutput = 1; 1115 1116 return palloc(option); 1117 } 1118 1119 /* 1120 * -name functions -- 1121 * 1122 * True if the basename of the filename being examined 1123 * matches pattern using Pattern Matching Notation S3.14 1124 */ 1125 int 1126 f_name(PLAN *plan, FTSENT *entry) 1127 { 1128 char fn[PATH_MAX]; 1129 const char *name; 1130 ssize_t len; 1131 1132 if (plan->flags & F_LINK) { 1133 /* 1134 * The below test both avoids obviously useless readlink() 1135 * calls and ensures that symlinks with existent target do 1136 * not match if symlinks are being followed. 1137 * Assumption: fts will stat all symlinks that are to be 1138 * followed and will return the stat information. 1139 */ 1140 if (entry->fts_info != FTS_NSOK && entry->fts_info != FTS_SL && 1141 entry->fts_info != FTS_SLNONE) 1142 return 0; 1143 len = readlink(entry->fts_accpath, fn, sizeof(fn) - 1); 1144 if (len == -1) 1145 return 0; 1146 fn[len] = '\0'; 1147 name = fn; 1148 } else 1149 name = entry->fts_name; 1150 return !fnmatch(plan->c_data, name, 1151 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 1152 } 1153 1154 PLAN * 1155 c_name(OPTION *option, char ***argvp) 1156 { 1157 char *pattern; 1158 PLAN *new; 1159 1160 pattern = nextarg(option, argvp); 1161 new = palloc(option); 1162 new->c_data = pattern; 1163 return new; 1164 } 1165 1166 /* 1167 * -newer file functions -- 1168 * 1169 * True if the current file has been modified more recently 1170 * then the modification time of the file named by the pathname 1171 * file. 1172 */ 1173 int 1174 f_newer(PLAN *plan, FTSENT *entry) 1175 { 1176 struct timespec ft; 1177 1178 if (plan->flags & F_TIME_C) 1179 ft = entry->fts_statp->st_ctim; 1180 else if (plan->flags & F_TIME_A) 1181 ft = entry->fts_statp->st_atim; 1182 else if (plan->flags & F_TIME_B) 1183 ft = entry->fts_statp->st_birthtim; 1184 else 1185 ft = entry->fts_statp->st_mtim; 1186 return (ft.tv_sec > plan->t_data.tv_sec || 1187 (ft.tv_sec == plan->t_data.tv_sec && 1188 ft.tv_nsec > plan->t_data.tv_nsec)); 1189 } 1190 1191 PLAN * 1192 c_newer(OPTION *option, char ***argvp) 1193 { 1194 char *fn_or_tspec; 1195 PLAN *new; 1196 struct stat sb; 1197 1198 fn_or_tspec = nextarg(option, argvp); 1199 ftsoptions &= ~FTS_NOSTAT; 1200 1201 new = palloc(option); 1202 /* compare against what */ 1203 if (option->flags & F_TIME2_T) { 1204 new->t_data.tv_sec = get_date(fn_or_tspec); 1205 if (new->t_data.tv_sec == (time_t) -1) 1206 errx(1, "Can't parse date/time: %s", fn_or_tspec); 1207 /* Use the seconds only in the comparison. */ 1208 new->t_data.tv_nsec = 999999999; 1209 } else { 1210 if (stat(fn_or_tspec, &sb)) 1211 err(1, "%s", fn_or_tspec); 1212 if (option->flags & F_TIME2_C) 1213 new->t_data = sb.st_ctim; 1214 else if (option->flags & F_TIME2_A) 1215 new->t_data = sb.st_atim; 1216 else if (option->flags & F_TIME2_B) 1217 new->t_data = sb.st_birthtim; 1218 else 1219 new->t_data = sb.st_mtim; 1220 } 1221 return new; 1222 } 1223 1224 /* 1225 * -nogroup functions -- 1226 * 1227 * True if file belongs to a user ID for which the equivalent 1228 * of the getgrnam() 9.2.1 [POSIX.1] function returns NULL. 1229 */ 1230 int 1231 f_nogroup(PLAN *plan __unused, FTSENT *entry) 1232 { 1233 return group_from_gid(entry->fts_statp->st_gid, 1) == NULL; 1234 } 1235 1236 PLAN * 1237 c_nogroup(OPTION *option, char ***argvp __unused) 1238 { 1239 ftsoptions &= ~FTS_NOSTAT; 1240 1241 return palloc(option); 1242 } 1243 1244 /* 1245 * -nouser functions -- 1246 * 1247 * True if file belongs to a user ID for which the equivalent 1248 * of the getpwuid() 9.2.2 [POSIX.1] function returns NULL. 1249 */ 1250 int 1251 f_nouser(PLAN *plan __unused, FTSENT *entry) 1252 { 1253 return user_from_uid(entry->fts_statp->st_uid, 1) == NULL; 1254 } 1255 1256 PLAN * 1257 c_nouser(OPTION *option, char ***argvp __unused) 1258 { 1259 ftsoptions &= ~FTS_NOSTAT; 1260 1261 return palloc(option); 1262 } 1263 1264 /* 1265 * -path functions -- 1266 * 1267 * True if the path of the filename being examined 1268 * matches pattern using Pattern Matching Notation S3.14 1269 */ 1270 int 1271 f_path(PLAN *plan, FTSENT *entry) 1272 { 1273 return !fnmatch(plan->c_data, entry->fts_path, 1274 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 1275 } 1276 1277 /* c_path is the same as c_name */ 1278 1279 /* 1280 * -perm functions -- 1281 * 1282 * The mode argument is used to represent file mode bits. If it starts 1283 * with a leading digit, it's treated as an octal mode, otherwise as a 1284 * symbolic mode. 1285 */ 1286 int 1287 f_perm(PLAN *plan, FTSENT *entry) 1288 { 1289 mode_t mode; 1290 1291 mode = entry->fts_statp->st_mode & 1292 (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO); 1293 if (plan->flags & F_ATLEAST) 1294 return (plan->m_data | mode) == mode; 1295 else if (plan->flags & F_ANY) 1296 return (mode & plan->m_data); 1297 else 1298 return mode == plan->m_data; 1299 /* NOTREACHED */ 1300 } 1301 1302 PLAN * 1303 c_perm(OPTION *option, char ***argvp) 1304 { 1305 char *perm; 1306 PLAN *new; 1307 mode_t *set; 1308 1309 perm = nextarg(option, argvp); 1310 ftsoptions &= ~FTS_NOSTAT; 1311 1312 new = palloc(option); 1313 1314 if (*perm == '-') { 1315 new->flags |= F_ATLEAST; 1316 ++perm; 1317 } else if (*perm == '+') { 1318 new->flags |= F_ANY; 1319 ++perm; 1320 } 1321 1322 if ((set = setmode(perm)) == NULL) 1323 errx(1, "%s: %s: illegal mode string", option->name, perm); 1324 1325 new->m_data = getmode(set, 0); 1326 free(set); 1327 return new; 1328 } 1329 1330 /* 1331 * -print functions -- 1332 * 1333 * Always true, causes the current pathname to be written to 1334 * standard output. 1335 */ 1336 int 1337 f_print(PLAN *plan __unused, FTSENT *entry) 1338 { 1339 (void)puts(entry->fts_path); 1340 return 1; 1341 } 1342 1343 PLAN * 1344 c_print(OPTION *option, char ***argvp __unused) 1345 { 1346 isoutput = 1; 1347 1348 return palloc(option); 1349 } 1350 1351 /* 1352 * -print0 functions -- 1353 * 1354 * Always true, causes the current pathname to be written to 1355 * standard output followed by a NUL character 1356 */ 1357 int 1358 f_print0(PLAN *plan __unused, FTSENT *entry) 1359 { 1360 fputs(entry->fts_path, stdout); 1361 fputc('\0', stdout); 1362 return 1; 1363 } 1364 1365 /* c_print0 is the same as c_print */ 1366 1367 /* 1368 * -prune functions -- 1369 * 1370 * Prune a portion of the hierarchy. 1371 */ 1372 int 1373 f_prune(PLAN *plan __unused, FTSENT *entry) 1374 { 1375 if (fts_set(tree, entry, FTS_SKIP)) 1376 err(1, "%s", entry->fts_path); 1377 return 1; 1378 } 1379 1380 /* c_prune == c_simple */ 1381 1382 /* 1383 * -regex functions -- 1384 * 1385 * True if the whole path of the file matches pattern using 1386 * regular expression. 1387 */ 1388 int 1389 f_regex(PLAN *plan, FTSENT *entry) 1390 { 1391 char *str; 1392 int len; 1393 regex_t *pre; 1394 regmatch_t pmatch; 1395 int errcode; 1396 char errbuf[LINE_MAX]; 1397 int matched; 1398 1399 pre = plan->re_data; 1400 str = entry->fts_path; 1401 len = strlen(str); 1402 matched = 0; 1403 1404 pmatch.rm_so = 0; 1405 pmatch.rm_eo = len; 1406 1407 errcode = regexec(pre, str, 1, &pmatch, REG_STARTEND); 1408 1409 if (errcode != 0 && errcode != REG_NOMATCH) { 1410 regerror(errcode, pre, errbuf, sizeof errbuf); 1411 errx(1, "%s: %s", 1412 plan->flags & F_IGNCASE ? "-iregex" : "-regex", errbuf); 1413 } 1414 1415 if (errcode == 0 && pmatch.rm_so == 0 && pmatch.rm_eo == len) 1416 matched = 1; 1417 1418 return matched; 1419 } 1420 1421 PLAN * 1422 c_regex(OPTION *option, char ***argvp) 1423 { 1424 PLAN *new; 1425 char *pattern; 1426 regex_t *pre; 1427 int errcode; 1428 char errbuf[LINE_MAX]; 1429 1430 if ((pre = malloc(sizeof(regex_t))) == NULL) 1431 err(1, NULL); 1432 1433 pattern = nextarg(option, argvp); 1434 1435 if ((errcode = regcomp(pre, pattern, 1436 regexp_flags | (option->flags & F_IGNCASE ? REG_ICASE : 0))) != 0) { 1437 regerror(errcode, pre, errbuf, sizeof errbuf); 1438 errx(1, "%s: %s: %s", 1439 option->flags & F_IGNCASE ? "-iregex" : "-regex", 1440 pattern, errbuf); 1441 } 1442 1443 new = palloc(option); 1444 new->re_data = pre; 1445 1446 return new; 1447 } 1448 1449 /* c_simple covers c_prune, c_openparen, c_closeparen, c_not, c_or, c_true, c_false */ 1450 1451 PLAN * 1452 c_simple(OPTION *option, char ***argvp __unused) 1453 { 1454 return palloc(option); 1455 } 1456 1457 /* 1458 * -size n[c] functions -- 1459 * 1460 * True if the file size in bytes, divided by an implementation defined 1461 * value and rounded up to the next integer, is n. If n is followed by 1462 * one of c k M G T P, the size is in bytes, kilobytes, 1463 * megabytes, gigabytes, terabytes or petabytes respectively. 1464 */ 1465 #define FIND_SIZE 512 1466 static int divsize = 1; 1467 1468 int 1469 f_size(PLAN *plan, FTSENT *entry) 1470 { 1471 off_t size; 1472 1473 size = divsize ? (entry->fts_statp->st_size + FIND_SIZE - 1) / 1474 FIND_SIZE : entry->fts_statp->st_size; 1475 COMPARE(size, plan->o_data); 1476 } 1477 1478 PLAN * 1479 c_size(OPTION *option, char ***argvp) 1480 { 1481 char *size_str; 1482 PLAN *new; 1483 char endch; 1484 off_t scale; 1485 1486 size_str = nextarg(option, argvp); 1487 ftsoptions &= ~FTS_NOSTAT; 1488 1489 new = palloc(option); 1490 endch = 'c'; 1491 new->o_data = find_parsenum(new, option->name, size_str, &endch); 1492 if (endch != '\0') { 1493 divsize = 0; 1494 1495 switch (endch) { 1496 case 'c': /* characters */ 1497 scale = 0x1LL; 1498 break; 1499 case 'k': /* kilobytes 1<<10 */ 1500 scale = 0x400LL; 1501 break; 1502 case 'M': /* megabytes 1<<20 */ 1503 scale = 0x100000LL; 1504 break; 1505 case 'G': /* gigabytes 1<<30 */ 1506 scale = 0x40000000LL; 1507 break; 1508 case 'T': /* terabytes 1<<40 */ 1509 scale = 0x10000000000LL; 1510 break; 1511 case 'P': /* petabytes 1<<50 */ 1512 scale = 0x4000000000000LL; 1513 break; 1514 default: 1515 errx(1, "%s: %s: illegal trailing character", 1516 option->name, size_str); 1517 break; 1518 } 1519 if (new->o_data > QUAD_MAX / scale) 1520 errx(1, "%s: %s: value too large", 1521 option->name, size_str); 1522 new->o_data *= scale; 1523 } 1524 return new; 1525 } 1526 1527 /* 1528 * -sparse functions -- 1529 * 1530 * Check if a file is sparse by finding if it occupies fewer blocks 1531 * than we expect based on its size. 1532 */ 1533 int 1534 f_sparse(PLAN *plan __unused, FTSENT *entry) 1535 { 1536 off_t expected_blocks; 1537 1538 expected_blocks = (entry->fts_statp->st_size + 511) / 512; 1539 return entry->fts_statp->st_blocks < expected_blocks; 1540 } 1541 1542 PLAN * 1543 c_sparse(OPTION *option, char ***argvp __unused) 1544 { 1545 ftsoptions &= ~FTS_NOSTAT; 1546 1547 return palloc(option); 1548 } 1549 1550 /* 1551 * -type c functions -- 1552 * 1553 * True if the type of the file is c, where c is b, c, d, p, f or w 1554 * for block special file, character special file, directory, FIFO, 1555 * regular file or whiteout respectively. 1556 */ 1557 int 1558 f_type(PLAN *plan, FTSENT *entry) 1559 { 1560 if (plan->m_data == S_IFDIR) 1561 return (entry->fts_info == FTS_D || entry->fts_info == FTS_DC || 1562 entry->fts_info == FTS_DNR || entry->fts_info == FTS_DOT || 1563 entry->fts_info == FTS_DP); 1564 else 1565 return (entry->fts_statp->st_mode & S_IFMT) == plan->m_data; 1566 } 1567 1568 PLAN * 1569 c_type(OPTION *option, char ***argvp) 1570 { 1571 char *typestring; 1572 PLAN *new; 1573 mode_t mask; 1574 1575 typestring = nextarg(option, argvp); 1576 if (typestring[0] != 'd') 1577 ftsoptions &= ~FTS_NOSTAT; 1578 1579 switch (typestring[0]) { 1580 case 'b': 1581 mask = S_IFBLK; 1582 break; 1583 case 'c': 1584 mask = S_IFCHR; 1585 break; 1586 case 'd': 1587 mask = S_IFDIR; 1588 break; 1589 case 'f': 1590 mask = S_IFREG; 1591 break; 1592 case 'l': 1593 mask = S_IFLNK; 1594 break; 1595 case 'p': 1596 mask = S_IFIFO; 1597 break; 1598 case 's': 1599 mask = S_IFSOCK; 1600 break; 1601 #ifdef FTS_WHITEOUT 1602 case 'w': 1603 mask = S_IFWHT; 1604 ftsoptions |= FTS_WHITEOUT; 1605 break; 1606 #endif /* FTS_WHITEOUT */ 1607 default: 1608 errx(1, "%s: %s: unknown type", option->name, typestring); 1609 } 1610 1611 new = palloc(option); 1612 new->m_data = mask; 1613 return new; 1614 } 1615 1616 /* 1617 * -user uname functions -- 1618 * 1619 * True if the file belongs to the user uname. If uname is numeric and 1620 * an equivalent of the getpwnam() S9.2.2 [POSIX.1] function does not 1621 * return a valid user name, uname is taken as a user ID. 1622 */ 1623 int 1624 f_user(PLAN *plan, FTSENT *entry) 1625 { 1626 COMPARE(entry->fts_statp->st_uid, plan->u_data); 1627 } 1628 1629 PLAN * 1630 c_user(OPTION *option, char ***argvp) 1631 { 1632 char *username; 1633 PLAN *new; 1634 struct passwd *p; 1635 uid_t uid; 1636 1637 username = nextarg(option, argvp); 1638 ftsoptions &= ~FTS_NOSTAT; 1639 1640 new = palloc(option); 1641 p = getpwnam(username); 1642 if (p == NULL) { 1643 char* cp = username; 1644 if( username[0] == '-' || username[0] == '+' ) 1645 username++; 1646 uid = atoi(username); 1647 if (uid == 0 && username[0] != '0') 1648 errx(1, "%s: %s: no such user", option->name, username); 1649 uid = find_parsenum(new, option->name, cp, NULL); 1650 } else 1651 uid = p->pw_uid; 1652 1653 new->u_data = uid; 1654 return new; 1655 } 1656 1657 /* 1658 * -xdev functions -- 1659 * 1660 * Always true, causes find not to descend past directories that have a 1661 * different device ID (st_dev, see stat() S5.6.2 [POSIX.1]) 1662 */ 1663 PLAN * 1664 c_xdev(OPTION *option, char ***argvp __unused) 1665 { 1666 ftsoptions |= FTS_XDEV; 1667 1668 return palloc(option); 1669 } 1670 1671 /* 1672 * ( expression ) functions -- 1673 * 1674 * True if expression is true. 1675 */ 1676 int 1677 f_expr(PLAN *plan, FTSENT *entry) 1678 { 1679 PLAN *p; 1680 int state = 0; 1681 1682 for (p = plan->p_data[0]; 1683 p && (state = (p->execute)(p, entry)); p = p->next); 1684 return state; 1685 } 1686 1687 /* 1688 * f_openparen and f_closeparen nodes are temporary place markers. They are 1689 * eliminated during phase 2 of find_formplan() --- the '(' node is converted 1690 * to a f_expr node containing the expression and the ')' node is discarded. 1691 * The functions themselves are only used as constants. 1692 */ 1693 1694 int 1695 f_openparen(PLAN *plan __unused, FTSENT *entry __unused) 1696 { 1697 abort(); 1698 } 1699 1700 int 1701 f_closeparen(PLAN *plan __unused, FTSENT *entry __unused) 1702 { 1703 abort(); 1704 } 1705 1706 /* c_openparen == c_simple */ 1707 /* c_closeparen == c_simple */ 1708 1709 /* 1710 * AND operator. Since AND is implicit, no node is allocated. 1711 */ 1712 PLAN * 1713 c_and(OPTION *option __unused, char ***argvp __unused) 1714 { 1715 return NULL; 1716 } 1717 1718 /* 1719 * ! expression functions -- 1720 * 1721 * Negation of a primary; the unary NOT operator. 1722 */ 1723 int 1724 f_not(PLAN *plan, FTSENT *entry) 1725 { 1726 PLAN *p; 1727 int state = 0; 1728 1729 for (p = plan->p_data[0]; 1730 p && (state = (p->execute)(p, entry)); p = p->next); 1731 return !state; 1732 } 1733 1734 /* c_not == c_simple */ 1735 1736 /* 1737 * expression -o expression functions -- 1738 * 1739 * Alternation of primaries; the OR operator. The second expression is 1740 * not evaluated if the first expression is true. 1741 */ 1742 int 1743 f_or(PLAN *plan, FTSENT *entry) 1744 { 1745 PLAN *p; 1746 int state = 0; 1747 1748 for (p = plan->p_data[0]; 1749 p && (state = (p->execute)(p, entry)); p = p->next); 1750 1751 if (state) 1752 return 1; 1753 1754 for (p = plan->p_data[1]; 1755 p && (state = (p->execute)(p, entry)); p = p->next); 1756 return state; 1757 } 1758 1759 /* c_or == c_simple */ 1760 1761 /* 1762 * -false 1763 * 1764 * Always false. 1765 */ 1766 int 1767 f_false(PLAN *plan __unused, FTSENT *entry __unused) 1768 { 1769 return 0; 1770 } 1771 1772 /* c_false == c_simple */ 1773 1774 /* 1775 * -quit 1776 * 1777 * Exits the program 1778 */ 1779 int 1780 f_quit(PLAN *plan __unused, FTSENT *entry __unused) 1781 { 1782 finish_execplus(); 1783 exit(exitstatus); 1784 } 1785 1786 /* c_quit == c_simple */ 1787