1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/param.h> 36 #include <sys/ucred.h> 37 #include <sys/stat.h> 38 #include <sys/types.h> 39 #include <sys/acl.h> 40 #include <sys/wait.h> 41 #include <sys/mount.h> 42 43 #include <dirent.h> 44 #include <err.h> 45 #include <errno.h> 46 #include <fnmatch.h> 47 #include <fts.h> 48 #include <grp.h> 49 #include <limits.h> 50 #include <pwd.h> 51 #include <regex.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 #include <unistd.h> 56 #include <ctype.h> 57 58 #include "find.h" 59 60 static PLAN *palloc(OPTION *); 61 static long long find_parsenum(PLAN *, const char *, char *, char *); 62 static long long find_parsetime(PLAN *, const char *, char *); 63 static char *nextarg(OPTION *, char ***); 64 65 extern char **environ; 66 67 static PLAN *lastexecplus = NULL; 68 69 #define COMPARE(a, b) do { \ 70 switch (plan->flags & F_ELG_MASK) { \ 71 case F_EQUAL: \ 72 return (a == b); \ 73 case F_LESSTHAN: \ 74 return (a < b); \ 75 case F_GREATER: \ 76 return (a > b); \ 77 default: \ 78 abort(); \ 79 } \ 80 } while(0) 81 82 static PLAN * 83 palloc(OPTION *option) 84 { 85 PLAN *new; 86 87 if ((new = malloc(sizeof(PLAN))) == NULL) 88 err(1, NULL); 89 new->execute = option->execute; 90 new->flags = option->flags; 91 new->next = NULL; 92 return new; 93 } 94 95 /* 96 * find_parsenum -- 97 * Parse a string of the form [+-]# and return the value. 98 */ 99 static long long 100 find_parsenum(PLAN *plan, const char *option, char *vp, char *endch) 101 { 102 long long value; 103 char *endchar, *str; /* Pointer to character ending conversion. */ 104 105 /* Determine comparison from leading + or -. */ 106 str = vp; 107 switch (*str) { 108 case '+': 109 ++str; 110 plan->flags |= F_GREATER; 111 break; 112 case '-': 113 ++str; 114 plan->flags |= F_LESSTHAN; 115 break; 116 default: 117 plan->flags |= F_EQUAL; 118 break; 119 } 120 121 /* 122 * Convert the string with strtoq(). Note, if strtoq() returns zero 123 * and endchar points to the beginning of the string we know we have 124 * a syntax error. 125 */ 126 value = strtoq(str, &endchar, 10); 127 if (value == 0 && endchar == str) 128 errx(1, "%s: %s: illegal numeric value", option, vp); 129 if (endchar[0] && endch == NULL) 130 errx(1, "%s: %s: illegal trailing character", option, vp); 131 if (endch) 132 *endch = endchar[0]; 133 return value; 134 } 135 136 /* 137 * find_parsetime -- 138 * Parse a string of the form [+-]([0-9]+[smhdw]?)+ and return the value. 139 */ 140 static long long 141 find_parsetime(PLAN *plan, const char *option, char *vp) 142 { 143 long long secs, value; 144 char *str, *unit; /* Pointer to character ending conversion. */ 145 146 /* Determine comparison from leading + or -. */ 147 str = vp; 148 switch (*str) { 149 case '+': 150 ++str; 151 plan->flags |= F_GREATER; 152 break; 153 case '-': 154 ++str; 155 plan->flags |= F_LESSTHAN; 156 break; 157 default: 158 plan->flags |= F_EQUAL; 159 break; 160 } 161 162 value = strtoq(str, &unit, 10); 163 if (value == 0 && unit == str) { 164 errx(1, "%s: %s: illegal time value", option, vp); 165 /* NOTREACHED */ 166 } 167 if (*unit == '\0') 168 return value; 169 170 /* Units syntax. */ 171 secs = 0; 172 for (;;) { 173 switch(*unit) { 174 case 's': /* seconds */ 175 secs += value; 176 break; 177 case 'm': /* minutes */ 178 secs += value * 60; 179 break; 180 case 'h': /* hours */ 181 secs += value * 3600; 182 break; 183 case 'd': /* days */ 184 secs += value * 86400; 185 break; 186 case 'w': /* weeks */ 187 secs += value * 604800; 188 break; 189 default: 190 errx(1, "%s: %s: bad unit '%c'", option, vp, *unit); 191 /* NOTREACHED */ 192 } 193 str = unit + 1; 194 if (*str == '\0') /* EOS */ 195 break; 196 value = strtoq(str, &unit, 10); 197 if (value == 0 && unit == str) { 198 errx(1, "%s: %s: illegal time value", option, vp); 199 /* NOTREACHED */ 200 } 201 if (*unit == '\0') { 202 errx(1, "%s: %s: missing trailing unit", option, vp); 203 /* NOTREACHED */ 204 } 205 } 206 plan->flags |= F_EXACTTIME; 207 return secs; 208 } 209 210 /* 211 * nextarg -- 212 * Check that another argument still exists, return a pointer to it, 213 * and increment the argument vector pointer. 214 */ 215 static char * 216 nextarg(OPTION *option, char ***argvp) 217 { 218 char *arg; 219 220 if ((arg = **argvp) == NULL) 221 errx(1, "%s: requires additional arguments", option->name); 222 (*argvp)++; 223 return arg; 224 } /* nextarg() */ 225 226 /* 227 * The value of n for the inode times (atime, birthtime, ctime, mtime) is a 228 * range, i.e. n matches from (n - 1) to n 24 hour periods. This interacts 229 * with -n, such that "-mtime -1" would be less than 0 days, which isn't what 230 * the user wanted. Correct so that -1 is "less than 1". 231 */ 232 #define TIME_CORRECT(p) \ 233 if (((p)->flags & F_ELG_MASK) == F_LESSTHAN) \ 234 ++((p)->t_data.tv_sec); 235 236 /* 237 * -[acm]min n functions -- 238 * 239 * True if the difference between the 240 * file access time (-amin) 241 * file birth time (-Bmin) 242 * last change of file status information (-cmin) 243 * file modification time (-mmin) 244 * and the current time is n min periods. 245 */ 246 int 247 f_Xmin(PLAN *plan, FTSENT *entry) 248 { 249 if (plan->flags & F_TIME_C) { 250 COMPARE((now - entry->fts_statp->st_ctime + 251 60 - 1) / 60, plan->t_data.tv_sec); 252 } else if (plan->flags & F_TIME_A) { 253 COMPARE((now - entry->fts_statp->st_atime + 254 60 - 1) / 60, plan->t_data.tv_sec); 255 #if HAVE_STRUCT_STAT_ST_BIRTHTIME 256 } else if (plan->flags & F_TIME_B) { 257 COMPARE((now - entry->fts_statp->st_birthtime + 258 60 - 1) / 60, plan->t_data.tv_sec); 259 #endif 260 } else { 261 COMPARE((now - entry->fts_statp->st_mtime + 262 60 - 1) / 60, plan->t_data.tv_sec); 263 } 264 } 265 266 PLAN * 267 c_Xmin(OPTION *option, char ***argvp) 268 { 269 char *nmins; 270 PLAN *new; 271 272 nmins = nextarg(option, argvp); 273 ftsoptions &= ~FTS_NOSTAT; 274 275 new = palloc(option); 276 new->t_data.tv_sec = find_parsenum(new, option->name, nmins, NULL); 277 new->t_data.tv_nsec = 0; 278 TIME_CORRECT(new); 279 return new; 280 } 281 282 /* 283 * -[acm]time n functions -- 284 * 285 * True if the difference between the 286 * file access time (-atime) 287 * file birth time (-Btime) 288 * last change of file status information (-ctime) 289 * file modification time (-mtime) 290 * and the current time is n 24 hour periods. 291 */ 292 293 int 294 f_Xtime(PLAN *plan, FTSENT *entry) 295 { 296 time_t xtime; 297 298 if (plan->flags & F_TIME_A) 299 xtime = entry->fts_statp->st_atime; 300 #if HAVE_STRUCT_STAT_ST_BIRTHTIME 301 else if (plan->flags & F_TIME_B) 302 xtime = entry->fts_statp->st_birthtime; 303 #endif 304 else if (plan->flags & F_TIME_C) 305 xtime = entry->fts_statp->st_ctime; 306 else 307 xtime = entry->fts_statp->st_mtime; 308 309 if (plan->flags & F_EXACTTIME) 310 COMPARE(now - xtime, plan->t_data.tv_sec); 311 else 312 COMPARE((now - xtime + 86400 - 1) / 86400, plan->t_data.tv_sec); 313 } 314 315 PLAN * 316 c_Xtime(OPTION *option, char ***argvp) 317 { 318 char *value; 319 PLAN *new; 320 321 value = nextarg(option, argvp); 322 ftsoptions &= ~FTS_NOSTAT; 323 324 new = palloc(option); 325 new->t_data.tv_sec = find_parsetime(new, option->name, value); 326 new->t_data.tv_nsec = 0; 327 if (!(new->flags & F_EXACTTIME)) 328 TIME_CORRECT(new); 329 return new; 330 } 331 332 /* 333 * -maxdepth/-mindepth n functions -- 334 * 335 * Does the same as -prune if the level of the current file is 336 * greater/less than the specified maximum/minimum depth. 337 * 338 * Note that -maxdepth and -mindepth are handled specially in 339 * find_execute() so their f_* functions are set to f_always_true(). 340 */ 341 PLAN * 342 c_mXXdepth(OPTION *option, char ***argvp) 343 { 344 char *dstr; 345 PLAN *new; 346 347 dstr = nextarg(option, argvp); 348 if (dstr[0] == '-') 349 /* all other errors handled by find_parsenum() */ 350 errx(1, "%s: %s: value must be positive", option->name, dstr); 351 352 new = palloc(option); 353 if (option->flags & F_MAXDEPTH) 354 maxdepth = find_parsenum(new, option->name, dstr, NULL); 355 else 356 mindepth = find_parsenum(new, option->name, dstr, NULL); 357 return new; 358 } 359 360 #ifdef ACL_TYPE_NFS4 361 /* 362 * -acl function -- 363 * 364 * Show files with EXTENDED ACL attributes. 365 */ 366 int 367 f_acl(PLAN *plan __unused, FTSENT *entry) 368 { 369 acl_t facl; 370 acl_type_t acl_type; 371 int acl_supported = 0, ret, trivial; 372 373 if (S_ISLNK(entry->fts_statp->st_mode)) 374 return 0; 375 ret = pathconf(entry->fts_accpath, _PC_ACL_NFS4); 376 if (ret > 0) { 377 acl_supported = 1; 378 acl_type = ACL_TYPE_NFS4; 379 } else if (ret < 0 && errno != EINVAL) { 380 warn("%s", entry->fts_accpath); 381 return (0); 382 } 383 if (acl_supported == 0) { 384 ret = pathconf(entry->fts_accpath, _PC_ACL_EXTENDED); 385 if (ret > 0) { 386 acl_supported = 1; 387 acl_type = ACL_TYPE_ACCESS; 388 } else if (ret < 0 && errno != EINVAL) { 389 warn("%s", entry->fts_accpath); 390 return (0); 391 } 392 } 393 if (acl_supported == 0) 394 return (0); 395 396 facl = acl_get_file(entry->fts_accpath, acl_type); 397 if (facl == NULL) { 398 warn("%s", entry->fts_accpath); 399 return (0); 400 } 401 ret = acl_is_trivial_np(facl, &trivial); 402 acl_free(facl); 403 if (ret) { 404 warn("%s", entry->fts_accpath); 405 return (0); 406 } 407 if (trivial) 408 return (0); 409 return (1); 410 } 411 #endif 412 413 PLAN * 414 c_acl(OPTION *option, char ***argvp __unused) 415 { 416 ftsoptions &= ~FTS_NOSTAT; 417 return (palloc(option)); 418 } 419 420 /* 421 * -delete functions -- 422 * 423 * True always. Makes its best shot and continues on regardless. 424 */ 425 int 426 f_delete(PLAN *plan __unused, FTSENT *entry) 427 { 428 /* ignore these from fts */ 429 if (strcmp(entry->fts_accpath, ".") == 0 || 430 strcmp(entry->fts_accpath, "..") == 0) 431 return 1; 432 433 /* sanity check */ 434 if (isdepth == 0 || /* depth off */ 435 (ftsoptions & FTS_NOSTAT)) /* not stat()ing */ 436 errx(1, "-delete: insecure options got turned on"); 437 438 if (!(ftsoptions & FTS_PHYSICAL) || /* physical off */ 439 (ftsoptions & FTS_LOGICAL)) /* or finally, logical on */ 440 errx(1, "-delete: forbidden when symlinks are followed"); 441 442 /* Potentially unsafe - do not accept relative paths whatsoever */ 443 if (entry->fts_level > FTS_ROOTLEVEL && 444 strchr(entry->fts_accpath, '/') != NULL) 445 errx(1, "-delete: %s: relative path potentially not safe", 446 entry->fts_accpath); 447 448 #if HAVE_STRUCT_STAT_ST_FLAGS 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 #endif 456 457 /* rmdir directories, unlink everything else */ 458 if (S_ISDIR(entry->fts_statp->st_mode)) { 459 if (rmdir(entry->fts_accpath) < 0 && errno != ENOTEMPTY) 460 warn("-delete: rmdir(%s)", entry->fts_path); 461 } else { 462 if (unlink(entry->fts_accpath) < 0) 463 warn("-delete: unlink(%s)", entry->fts_path); 464 } 465 466 /* "succeed" */ 467 return 1; 468 } 469 470 PLAN * 471 c_delete(OPTION *option, char ***argvp __unused) 472 { 473 474 ftsoptions &= ~FTS_NOSTAT; /* no optimise */ 475 isoutput = 1; /* possible output */ 476 isdepth = 1; /* -depth implied */ 477 478 /* 479 * Try to avoid the confusing error message about relative paths 480 * being potentially not safe. 481 */ 482 if (ftsoptions & FTS_NOCHDIR) 483 errx(1, "%s: forbidden when the current directory cannot be opened", 484 "-delete"); 485 486 return palloc(option); 487 } 488 489 490 /* 491 * always_true -- 492 * 493 * Always true, used for -maxdepth, -mindepth, -xdev, -follow, and -true 494 */ 495 int 496 f_always_true(PLAN *plan __unused, FTSENT *entry __unused) 497 { 498 return 1; 499 } 500 501 /* 502 * -depth functions -- 503 * 504 * With argument: True if the file is at level n. 505 * Without argument: Always true, causes descent of the directory hierarchy 506 * to be done so that all entries in a directory are acted on before the 507 * directory itself. 508 */ 509 int 510 f_depth(PLAN *plan, FTSENT *entry) 511 { 512 if (plan->flags & F_DEPTH) 513 COMPARE(entry->fts_level, plan->d_data); 514 else 515 return 1; 516 } 517 518 PLAN * 519 c_depth(OPTION *option, char ***argvp) 520 { 521 PLAN *new; 522 char *str; 523 524 new = palloc(option); 525 526 str = **argvp; 527 if (str && !(new->flags & F_DEPTH)) { 528 /* skip leading + or - */ 529 if (*str == '+' || *str == '-') 530 str++; 531 /* skip sign */ 532 if (*str == '+' || *str == '-') 533 str++; 534 if (isdigit(*str)) 535 new->flags |= F_DEPTH; 536 } 537 538 if (new->flags & F_DEPTH) { /* -depth n */ 539 char *ndepth; 540 541 ndepth = nextarg(option, argvp); 542 new->d_data = find_parsenum(new, option->name, ndepth, NULL); 543 } else { /* -d */ 544 isdepth = 1; 545 } 546 547 return new; 548 } 549 550 /* 551 * -empty functions -- 552 * 553 * True if the file or directory is empty 554 */ 555 int 556 f_empty(PLAN *plan __unused, FTSENT *entry) 557 { 558 if (S_ISREG(entry->fts_statp->st_mode) && 559 entry->fts_statp->st_size == 0) 560 return 1; 561 if (S_ISDIR(entry->fts_statp->st_mode)) { 562 struct dirent *dp; 563 int empty; 564 DIR *dir; 565 566 empty = 1; 567 dir = opendir(entry->fts_accpath); 568 if (dir == NULL) 569 return 0; 570 for (dp = readdir(dir); dp; dp = readdir(dir)) 571 if (dp->d_name[0] != '.' || 572 (dp->d_name[1] != '\0' && 573 (dp->d_name[1] != '.' || dp->d_name[2] != '\0'))) { 574 empty = 0; 575 break; 576 } 577 closedir(dir); 578 return empty; 579 } 580 return 0; 581 } 582 583 PLAN * 584 c_empty(OPTION *option, char ***argvp __unused) 585 { 586 ftsoptions &= ~FTS_NOSTAT; 587 588 return palloc(option); 589 } 590 591 /* 592 * [-exec | -execdir | -ok] utility [arg ... ] ; functions -- 593 * 594 * True if the executed utility returns a zero value as exit status. 595 * The end of the primary expression is delimited by a semicolon. If 596 * "{}" occurs anywhere, it gets replaced by the current pathname, 597 * or, in the case of -execdir, the current basename (filename 598 * without leading directory prefix). For -exec and -ok, 599 * the current directory for the execution of utility is the same as 600 * the current directory when the find utility was started, whereas 601 * for -execdir, it is the directory the file resides in. 602 * 603 * The primary -ok differs from -exec in that it requests affirmation 604 * of the user before executing the utility. 605 */ 606 int 607 f_exec(PLAN *plan, FTSENT *entry) 608 { 609 int cnt; 610 pid_t pid; 611 int status; 612 char *file; 613 614 if (entry == NULL && plan->flags & F_EXECPLUS) { 615 if (plan->e_ppos == plan->e_pbnum) 616 return (1); 617 plan->e_argv[plan->e_ppos] = NULL; 618 goto doexec; 619 } 620 621 /* XXX - if file/dir ends in '/' this will not work -- can it? */ 622 if ((plan->flags & F_EXECDIR) && \ 623 (file = strrchr(entry->fts_path, '/'))) 624 file++; 625 else 626 file = entry->fts_path; 627 628 if (plan->flags & F_EXECPLUS) { 629 if ((plan->e_argv[plan->e_ppos] = strdup(file)) == NULL) 630 err(1, NULL); 631 plan->e_len[plan->e_ppos] = strlen(file); 632 plan->e_psize += plan->e_len[plan->e_ppos]; 633 if (++plan->e_ppos < plan->e_pnummax && 634 plan->e_psize < plan->e_psizemax) 635 return (1); 636 plan->e_argv[plan->e_ppos] = NULL; 637 } else { 638 for (cnt = 0; plan->e_argv[cnt]; ++cnt) 639 if (plan->e_len[cnt]) 640 brace_subst(plan->e_orig[cnt], 641 &plan->e_argv[cnt], file, 642 plan->e_len[cnt]); 643 } 644 645 doexec: if ((plan->flags & F_NEEDOK) && !queryuser(plan->e_argv)) 646 return 0; 647 648 /* make sure find output is interspersed correctly with subprocesses */ 649 fflush(stdout); 650 fflush(stderr); 651 652 switch (pid = fork()) { 653 case -1: 654 err(1, "fork"); 655 /* NOTREACHED */ 656 case 0: 657 /* change dir back from where we started */ 658 if (!(plan->flags & F_EXECDIR) && 659 !(ftsoptions & FTS_NOCHDIR) && fchdir(dotfd)) { 660 warn("chdir"); 661 _exit(1); 662 } 663 execvp(plan->e_argv[0], plan->e_argv); 664 warn("%s", plan->e_argv[0]); 665 _exit(1); 666 } 667 if (plan->flags & F_EXECPLUS) { 668 while (--plan->e_ppos >= plan->e_pbnum) 669 free(plan->e_argv[plan->e_ppos]); 670 plan->e_ppos = plan->e_pbnum; 671 plan->e_psize = plan->e_pbsize; 672 } 673 pid = waitpid(pid, &status, 0); 674 if (pid != -1 && WIFEXITED(status) && !WEXITSTATUS(status)) 675 return (1); 676 if (plan->flags & F_EXECPLUS) { 677 exitstatus = 1; 678 return (1); 679 } 680 return (0); 681 } 682 683 /* 684 * c_exec, c_execdir, c_ok -- 685 * build three parallel arrays, one with pointers to the strings passed 686 * on the command line, one with (possibly duplicated) pointers to the 687 * argv array, and one with integer values that are lengths of the 688 * strings, but also flags meaning that the string has to be massaged. 689 */ 690 PLAN * 691 c_exec(OPTION *option, char ***argvp) 692 { 693 PLAN *new; /* node returned */ 694 long argmax; 695 int cnt, i; 696 char **argv, **ap, **ep, *p; 697 698 /* This would defeat -execdir's intended security. */ 699 if (option->flags & F_EXECDIR && ftsoptions & FTS_NOCHDIR) 700 errx(1, "%s: forbidden when the current directory cannot be opened", 701 "-execdir"); 702 703 /* XXX - was in c_execdir, but seems unnecessary!? 704 ftsoptions &= ~FTS_NOSTAT; 705 */ 706 isoutput = 1; 707 708 /* XXX - this is a change from the previous coding */ 709 new = palloc(option); 710 711 for (ap = argv = *argvp;; ++ap) { 712 if (!*ap) 713 errx(1, 714 "%s: no terminating \";\" or \"+\"", option->name); 715 if (**ap == ';') 716 break; 717 if (**ap == '+' && ap != argv && strcmp(*(ap - 1), "{}") == 0) { 718 new->flags |= F_EXECPLUS; 719 break; 720 } 721 } 722 723 if (ap == argv) 724 errx(1, "%s: no command specified", option->name); 725 726 cnt = ap - *argvp + 1; 727 if (new->flags & F_EXECPLUS) { 728 new->e_ppos = new->e_pbnum = cnt - 2; 729 if ((argmax = sysconf(_SC_ARG_MAX)) == -1) { 730 warn("sysconf(_SC_ARG_MAX)"); 731 argmax = _POSIX_ARG_MAX; 732 } 733 argmax -= 1024; 734 for (ep = environ; *ep != NULL; ep++) 735 argmax -= strlen(*ep) + 1 + sizeof(*ep); 736 argmax -= 1 + sizeof(*ep); 737 /* 738 * Ensure that -execdir ... {} + does not mix files 739 * from different directories in one invocation. 740 * Files from the same directory should be handled 741 * in one invocation but there is no code for it. 742 */ 743 new->e_pnummax = new->flags & F_EXECDIR ? 1 : argmax / 16; 744 argmax -= sizeof(char *) * new->e_pnummax; 745 if (argmax <= 0) 746 errx(1, "no space for arguments"); 747 new->e_psizemax = argmax; 748 new->e_pbsize = 0; 749 cnt += new->e_pnummax + 1; 750 new->e_next = lastexecplus; 751 lastexecplus = new; 752 } 753 if ((new->e_argv = malloc(cnt * sizeof(char *))) == NULL) 754 err(1, NULL); 755 if ((new->e_orig = malloc(cnt * sizeof(char *))) == NULL) 756 err(1, NULL); 757 if ((new->e_len = malloc(cnt * sizeof(int))) == NULL) 758 err(1, NULL); 759 760 for (argv = *argvp, cnt = 0; argv < ap; ++argv, ++cnt) { 761 new->e_orig[cnt] = *argv; 762 if (new->flags & F_EXECPLUS) 763 new->e_pbsize += strlen(*argv) + 1; 764 for (p = *argv; *p; ++p) 765 if (!(new->flags & F_EXECPLUS) && p[0] == '{' && 766 p[1] == '}') { 767 if ((new->e_argv[cnt] = 768 malloc(MAXPATHLEN)) == NULL) 769 err(1, NULL); 770 new->e_len[cnt] = MAXPATHLEN; 771 break; 772 } 773 if (!*p) { 774 new->e_argv[cnt] = *argv; 775 new->e_len[cnt] = 0; 776 } 777 } 778 if (new->flags & F_EXECPLUS) { 779 new->e_psize = new->e_pbsize; 780 cnt--; 781 for (i = 0; i < new->e_pnummax; i++) { 782 new->e_argv[cnt] = NULL; 783 new->e_len[cnt] = 0; 784 cnt++; 785 } 786 argv = ap; 787 goto done; 788 } 789 new->e_argv[cnt] = new->e_orig[cnt] = NULL; 790 791 done: *argvp = argv + 1; 792 return new; 793 } 794 795 /* Finish any pending -exec ... {} + functions. */ 796 void 797 finish_execplus(void) 798 { 799 PLAN *p; 800 801 p = lastexecplus; 802 while (p != NULL) { 803 (p->execute)(p, NULL); 804 p = p->e_next; 805 } 806 } 807 808 #if HAVE_STRUCT_STAT_ST_FLAGS 809 int 810 f_flags(PLAN *plan, FTSENT *entry) 811 { 812 u_long flags; 813 814 flags = entry->fts_statp->st_flags; 815 if (plan->flags & F_ATLEAST) 816 return (flags | plan->fl_flags) == flags && 817 !(flags & plan->fl_notflags); 818 else if (plan->flags & F_ANY) 819 return (flags & plan->fl_flags) || 820 (flags | plan->fl_notflags) != flags; 821 else 822 return flags == plan->fl_flags && 823 !(plan->fl_flags & plan->fl_notflags); 824 } 825 826 PLAN * 827 c_flags(OPTION *option, char ***argvp) 828 { 829 char *flags_str; 830 PLAN *new; 831 u_long flags, notflags; 832 833 flags_str = nextarg(option, argvp); 834 ftsoptions &= ~FTS_NOSTAT; 835 836 new = palloc(option); 837 838 if (*flags_str == '-') { 839 new->flags |= F_ATLEAST; 840 flags_str++; 841 } else if (*flags_str == '+') { 842 new->flags |= F_ANY; 843 flags_str++; 844 } 845 if (strtofflags(&flags_str, &flags, ¬flags) == 1) 846 errx(1, "%s: %s: illegal flags string", option->name, flags_str); 847 848 new->fl_flags = flags; 849 new->fl_notflags = notflags; 850 return new; 851 } 852 #endif 853 854 /* 855 * -follow functions -- 856 * 857 * Always true, causes symbolic links to be followed on a global 858 * basis. 859 */ 860 PLAN * 861 c_follow(OPTION *option, char ***argvp __unused) 862 { 863 ftsoptions &= ~FTS_PHYSICAL; 864 ftsoptions |= FTS_LOGICAL; 865 866 return palloc(option); 867 } 868 869 #if HAVE_STRUCT_STATFS_F_FSTYPENAME 870 /* 871 * -fstype functions -- 872 * 873 * True if the file is of a certain type. 874 */ 875 int 876 f_fstype(PLAN *plan, FTSENT *entry) 877 { 878 static dev_t curdev; /* need a guaranteed illegal dev value */ 879 static int first = 1; 880 struct statfs sb; 881 static int val_flags; 882 static char fstype[sizeof(sb.f_fstypename)]; 883 char *p, save[2] = {0,0}; 884 885 if ((plan->flags & F_MTMASK) == F_MTUNKNOWN) 886 return 0; 887 888 /* Only check when we cross mount point. */ 889 if (first || curdev != entry->fts_statp->st_dev) { 890 curdev = entry->fts_statp->st_dev; 891 892 /* 893 * Statfs follows symlinks; find wants the link's filesystem, 894 * not where it points. 895 */ 896 if (entry->fts_info == FTS_SL || 897 entry->fts_info == FTS_SLNONE) { 898 if ((p = strrchr(entry->fts_accpath, '/')) != NULL) 899 ++p; 900 else 901 p = entry->fts_accpath; 902 save[0] = p[0]; 903 p[0] = '.'; 904 save[1] = p[1]; 905 p[1] = '\0'; 906 } else 907 p = NULL; 908 909 if (statfs(entry->fts_accpath, &sb)) { 910 if (!ignore_readdir_race || errno != ENOENT) { 911 warn("statfs: %s", entry->fts_accpath); 912 exitstatus = 1; 913 } 914 return 0; 915 } 916 917 if (p) { 918 p[0] = save[0]; 919 p[1] = save[1]; 920 } 921 922 first = 0; 923 924 /* 925 * Further tests may need both of these values, so 926 * always copy both of them. 927 */ 928 val_flags = sb.f_flags; 929 strlcpy(fstype, sb.f_fstypename, sizeof(fstype)); 930 } 931 switch (plan->flags & F_MTMASK) { 932 case F_MTFLAG: 933 return val_flags & plan->mt_data; 934 case F_MTTYPE: 935 return (strncmp(fstype, plan->c_data, sizeof(fstype)) == 0); 936 default: 937 abort(); 938 } 939 } 940 941 PLAN * 942 c_fstype(OPTION *option, char ***argvp) 943 { 944 char *fsname; 945 PLAN *new; 946 947 fsname = nextarg(option, argvp); 948 ftsoptions &= ~FTS_NOSTAT; 949 950 new = palloc(option); 951 switch (*fsname) { 952 case 'l': 953 if (!strcmp(fsname, "local")) { 954 new->flags |= F_MTFLAG; 955 new->mt_data = MNT_LOCAL; 956 return new; 957 } 958 break; 959 case 'r': 960 if (!strcmp(fsname, "rdonly")) { 961 new->flags |= F_MTFLAG; 962 new->mt_data = MNT_RDONLY; 963 return new; 964 } 965 break; 966 } 967 968 new->flags |= F_MTTYPE; 969 new->c_data = fsname; 970 return new; 971 } 972 #endif 973 974 /* 975 * -group gname functions -- 976 * 977 * True if the file belongs to the group gname. If gname is numeric and 978 * an equivalent of the getgrnam() function does not return a valid group 979 * name, gname is taken as a group ID. 980 */ 981 int 982 f_group(PLAN *plan, FTSENT *entry) 983 { 984 COMPARE(entry->fts_statp->st_gid, plan->g_data); 985 } 986 987 PLAN * 988 c_group(OPTION *option, char ***argvp) 989 { 990 char *gname; 991 PLAN *new; 992 struct group *g; 993 gid_t gid; 994 995 gname = nextarg(option, argvp); 996 ftsoptions &= ~FTS_NOSTAT; 997 998 new = palloc(option); 999 g = getgrnam(gname); 1000 if (g == NULL) { 1001 char* cp = gname; 1002 if (gname[0] == '-' || gname[0] == '+') 1003 gname++; 1004 gid = atoi(gname); 1005 if (gid == 0 && gname[0] != '0') 1006 errx(1, "%s: %s: no such group", option->name, gname); 1007 gid = find_parsenum(new, option->name, cp, NULL); 1008 } else 1009 gid = g->gr_gid; 1010 1011 new->g_data = gid; 1012 return new; 1013 } 1014 1015 /* 1016 * -ignore_readdir_race functions -- 1017 * 1018 * Always true. Ignore errors which occur if a file or a directory 1019 * in a starting point gets deleted between reading the name and calling 1020 * stat on it while find is traversing the starting point. 1021 */ 1022 1023 PLAN * 1024 c_ignore_readdir_race(OPTION *option, char ***argvp __unused) 1025 { 1026 if (strcmp(option->name, "-ignore_readdir_race") == 0) 1027 ignore_readdir_race = 1; 1028 else 1029 ignore_readdir_race = 0; 1030 1031 return palloc(option); 1032 } 1033 1034 /* 1035 * -inum n functions -- 1036 * 1037 * True if the file has inode # n. 1038 */ 1039 int 1040 f_inum(PLAN *plan, FTSENT *entry) 1041 { 1042 COMPARE(entry->fts_statp->st_ino, plan->i_data); 1043 } 1044 1045 PLAN * 1046 c_inum(OPTION *option, char ***argvp) 1047 { 1048 char *inum_str; 1049 PLAN *new; 1050 1051 inum_str = nextarg(option, argvp); 1052 ftsoptions &= ~FTS_NOSTAT; 1053 1054 new = palloc(option); 1055 new->i_data = find_parsenum(new, option->name, inum_str, NULL); 1056 return new; 1057 } 1058 1059 /* 1060 * -samefile FN 1061 * 1062 * True if the file has the same inode (eg hard link) FN 1063 */ 1064 1065 /* f_samefile is just f_inum */ 1066 PLAN * 1067 c_samefile(OPTION *option, char ***argvp) 1068 { 1069 char *fn; 1070 PLAN *new; 1071 struct stat sb; 1072 int error; 1073 1074 fn = nextarg(option, argvp); 1075 ftsoptions &= ~FTS_NOSTAT; 1076 1077 new = palloc(option); 1078 if (ftsoptions & FTS_PHYSICAL) 1079 error = lstat(fn, &sb); 1080 else 1081 error = stat(fn, &sb); 1082 if (error != 0) 1083 err(1, "%s", fn); 1084 new->i_data = sb.st_ino; 1085 return new; 1086 } 1087 1088 /* 1089 * -links n functions -- 1090 * 1091 * True if the file has n links. 1092 */ 1093 int 1094 f_links(PLAN *plan, FTSENT *entry) 1095 { 1096 COMPARE(entry->fts_statp->st_nlink, plan->l_data); 1097 } 1098 1099 PLAN * 1100 c_links(OPTION *option, char ***argvp) 1101 { 1102 char *nlinks; 1103 PLAN *new; 1104 1105 nlinks = nextarg(option, argvp); 1106 ftsoptions &= ~FTS_NOSTAT; 1107 1108 new = palloc(option); 1109 new->l_data = (nlink_t)find_parsenum(new, option->name, nlinks, NULL); 1110 return new; 1111 } 1112 1113 /* 1114 * -ls functions -- 1115 * 1116 * Always true - prints the current entry to stdout in "ls" format. 1117 */ 1118 int 1119 f_ls(PLAN *plan __unused, FTSENT *entry) 1120 { 1121 printlong(entry->fts_path, entry->fts_accpath, entry->fts_statp); 1122 return 1; 1123 } 1124 1125 PLAN * 1126 c_ls(OPTION *option, char ***argvp __unused) 1127 { 1128 ftsoptions &= ~FTS_NOSTAT; 1129 isoutput = 1; 1130 1131 return palloc(option); 1132 } 1133 1134 /* 1135 * -name functions -- 1136 * 1137 * True if the basename of the filename being examined 1138 * matches pattern using Pattern Matching Notation S3.14 1139 */ 1140 int 1141 f_name(PLAN *plan, FTSENT *entry) 1142 { 1143 char fn[PATH_MAX]; 1144 const char *name; 1145 ssize_t len; 1146 1147 if (plan->flags & F_LINK) { 1148 /* 1149 * The below test both avoids obviously useless readlink() 1150 * calls and ensures that symlinks with existent target do 1151 * not match if symlinks are being followed. 1152 * Assumption: fts will stat all symlinks that are to be 1153 * followed and will return the stat information. 1154 */ 1155 if (entry->fts_info != FTS_NSOK && entry->fts_info != FTS_SL && 1156 entry->fts_info != FTS_SLNONE) 1157 return 0; 1158 len = readlink(entry->fts_accpath, fn, sizeof(fn) - 1); 1159 if (len == -1) 1160 return 0; 1161 fn[len] = '\0'; 1162 name = fn; 1163 } else 1164 name = entry->fts_name; 1165 return !fnmatch(plan->c_data, name, 1166 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 1167 } 1168 1169 PLAN * 1170 c_name(OPTION *option, char ***argvp) 1171 { 1172 char *pattern; 1173 PLAN *new; 1174 1175 pattern = nextarg(option, argvp); 1176 new = palloc(option); 1177 new->c_data = pattern; 1178 return new; 1179 } 1180 1181 /* 1182 * -newer file functions -- 1183 * 1184 * True if the current file has been modified more recently 1185 * then the modification time of the file named by the pathname 1186 * file. 1187 */ 1188 int 1189 f_newer(PLAN *plan, FTSENT *entry) 1190 { 1191 struct timespec ft; 1192 1193 if (plan->flags & F_TIME_C) 1194 ft = entry->fts_statp->st_ctim; 1195 #if HAVE_STRUCT_STAT_ST_BIRTHTIME 1196 else if (plan->flags & F_TIME_A) 1197 ft = entry->fts_statp->st_atim; 1198 else if (plan->flags & F_TIME_B) 1199 ft = entry->fts_statp->st_birthtim; 1200 #endif 1201 else 1202 ft = entry->fts_statp->st_mtim; 1203 return (ft.tv_sec > plan->t_data.tv_sec || 1204 (ft.tv_sec == plan->t_data.tv_sec && 1205 ft.tv_nsec > plan->t_data.tv_nsec)); 1206 } 1207 1208 PLAN * 1209 c_newer(OPTION *option, char ***argvp) 1210 { 1211 char *fn_or_tspec; 1212 PLAN *new; 1213 struct stat sb; 1214 int error; 1215 1216 fn_or_tspec = nextarg(option, argvp); 1217 ftsoptions &= ~FTS_NOSTAT; 1218 1219 new = palloc(option); 1220 /* compare against what */ 1221 if (option->flags & F_TIME2_T) { 1222 new->t_data.tv_sec = get_date(fn_or_tspec); 1223 if (new->t_data.tv_sec == (time_t) -1) 1224 errx(1, "Can't parse date/time: %s", fn_or_tspec); 1225 /* Use the seconds only in the comparison. */ 1226 new->t_data.tv_nsec = 999999999; 1227 } else { 1228 if (ftsoptions & FTS_PHYSICAL) 1229 error = lstat(fn_or_tspec, &sb); 1230 else 1231 error = stat(fn_or_tspec, &sb); 1232 if (error != 0) 1233 err(1, "%s", fn_or_tspec); 1234 if (option->flags & F_TIME2_C) 1235 new->t_data = sb.st_ctim; 1236 else if (option->flags & F_TIME2_A) 1237 new->t_data = sb.st_atim; 1238 #if HAVE_STRUCT_STAT_ST_BIRTHTIME 1239 else if (option->flags & F_TIME2_B) 1240 new->t_data = sb.st_birthtim; 1241 #endif 1242 else 1243 new->t_data = sb.st_mtim; 1244 } 1245 return new; 1246 } 1247 1248 /* 1249 * -nogroup functions -- 1250 * 1251 * True if file belongs to a user ID for which the equivalent 1252 * of the getgrnam() 9.2.1 [POSIX.1] function returns NULL. 1253 */ 1254 int 1255 f_nogroup(PLAN *plan __unused, FTSENT *entry) 1256 { 1257 return group_from_gid(entry->fts_statp->st_gid, 1) == NULL; 1258 } 1259 1260 PLAN * 1261 c_nogroup(OPTION *option, char ***argvp __unused) 1262 { 1263 ftsoptions &= ~FTS_NOSTAT; 1264 1265 return palloc(option); 1266 } 1267 1268 /* 1269 * -nouser functions -- 1270 * 1271 * True if file belongs to a user ID for which the equivalent 1272 * of the getpwuid() 9.2.2 [POSIX.1] function returns NULL. 1273 */ 1274 int 1275 f_nouser(PLAN *plan __unused, FTSENT *entry) 1276 { 1277 return user_from_uid(entry->fts_statp->st_uid, 1) == NULL; 1278 } 1279 1280 PLAN * 1281 c_nouser(OPTION *option, char ***argvp __unused) 1282 { 1283 ftsoptions &= ~FTS_NOSTAT; 1284 1285 return palloc(option); 1286 } 1287 1288 /* 1289 * -path functions -- 1290 * 1291 * True if the path of the filename being examined 1292 * matches pattern using Pattern Matching Notation S3.14 1293 */ 1294 int 1295 f_path(PLAN *plan, FTSENT *entry) 1296 { 1297 return !fnmatch(plan->c_data, entry->fts_path, 1298 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 1299 } 1300 1301 /* c_path is the same as c_name */ 1302 1303 /* 1304 * -perm functions -- 1305 * 1306 * The mode argument is used to represent file mode bits. If it starts 1307 * with a leading digit, it's treated as an octal mode, otherwise as a 1308 * symbolic mode. 1309 */ 1310 int 1311 f_perm(PLAN *plan, FTSENT *entry) 1312 { 1313 mode_t mode; 1314 1315 mode = entry->fts_statp->st_mode & 1316 (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO); 1317 if (plan->flags & F_ATLEAST) 1318 return (plan->m_data | mode) == mode; 1319 else if (plan->flags & F_ANY) 1320 return (mode & plan->m_data); 1321 else 1322 return mode == plan->m_data; 1323 /* NOTREACHED */ 1324 } 1325 1326 PLAN * 1327 c_perm(OPTION *option, char ***argvp) 1328 { 1329 char *perm; 1330 PLAN *new; 1331 mode_t *set; 1332 1333 perm = nextarg(option, argvp); 1334 ftsoptions &= ~FTS_NOSTAT; 1335 1336 new = palloc(option); 1337 1338 if (*perm == '-') { 1339 new->flags |= F_ATLEAST; 1340 ++perm; 1341 } else if (*perm == '+') { 1342 new->flags |= F_ANY; 1343 ++perm; 1344 } 1345 1346 if ((set = setmode(perm)) == NULL) 1347 errx(1, "%s: %s: illegal mode string", option->name, perm); 1348 1349 new->m_data = getmode(set, 0); 1350 free(set); 1351 return new; 1352 } 1353 1354 /* 1355 * -print functions -- 1356 * 1357 * Always true, causes the current pathname to be written to 1358 * standard output. 1359 */ 1360 int 1361 f_print(PLAN *plan __unused, FTSENT *entry) 1362 { 1363 (void)puts(entry->fts_path); 1364 return 1; 1365 } 1366 1367 PLAN * 1368 c_print(OPTION *option, char ***argvp __unused) 1369 { 1370 isoutput = 1; 1371 1372 return palloc(option); 1373 } 1374 1375 /* 1376 * -print0 functions -- 1377 * 1378 * Always true, causes the current pathname to be written to 1379 * standard output followed by a NUL character 1380 */ 1381 int 1382 f_print0(PLAN *plan __unused, FTSENT *entry) 1383 { 1384 fputs(entry->fts_path, stdout); 1385 fputc('\0', stdout); 1386 return 1; 1387 } 1388 1389 /* c_print0 is the same as c_print */ 1390 1391 /* 1392 * -prune functions -- 1393 * 1394 * Prune a portion of the hierarchy. 1395 */ 1396 int 1397 f_prune(PLAN *plan __unused, FTSENT *entry) 1398 { 1399 if (fts_set(tree, entry, FTS_SKIP)) 1400 err(1, "%s", entry->fts_path); 1401 return 1; 1402 } 1403 1404 /* c_prune == c_simple */ 1405 1406 /* 1407 * -regex functions -- 1408 * 1409 * True if the whole path of the file matches pattern using 1410 * regular expression. 1411 */ 1412 int 1413 f_regex(PLAN *plan, FTSENT *entry) 1414 { 1415 char *str; 1416 int len; 1417 regex_t *pre; 1418 regmatch_t pmatch; 1419 int errcode; 1420 char errbuf[LINE_MAX]; 1421 int matched; 1422 1423 pre = plan->re_data; 1424 str = entry->fts_path; 1425 len = strlen(str); 1426 matched = 0; 1427 1428 pmatch.rm_so = 0; 1429 pmatch.rm_eo = len; 1430 1431 errcode = regexec(pre, str, 1, &pmatch, REG_STARTEND); 1432 1433 if (errcode != 0 && errcode != REG_NOMATCH) { 1434 regerror(errcode, pre, errbuf, sizeof errbuf); 1435 errx(1, "%s: %s", 1436 plan->flags & F_IGNCASE ? "-iregex" : "-regex", errbuf); 1437 } 1438 1439 if (errcode == 0 && pmatch.rm_so == 0 && pmatch.rm_eo == len) 1440 matched = 1; 1441 1442 return matched; 1443 } 1444 1445 PLAN * 1446 c_regex(OPTION *option, char ***argvp) 1447 { 1448 PLAN *new; 1449 char *pattern; 1450 regex_t *pre; 1451 int errcode; 1452 char errbuf[LINE_MAX]; 1453 1454 if ((pre = malloc(sizeof(regex_t))) == NULL) 1455 err(1, NULL); 1456 1457 pattern = nextarg(option, argvp); 1458 1459 if ((errcode = regcomp(pre, pattern, 1460 regexp_flags | (option->flags & F_IGNCASE ? REG_ICASE : 0))) != 0) { 1461 regerror(errcode, pre, errbuf, sizeof errbuf); 1462 errx(1, "%s: %s: %s", 1463 option->flags & F_IGNCASE ? "-iregex" : "-regex", 1464 pattern, errbuf); 1465 } 1466 1467 new = palloc(option); 1468 new->re_data = pre; 1469 1470 return new; 1471 } 1472 1473 /* c_simple covers c_prune, c_openparen, c_closeparen, c_not, c_or, c_true, c_false */ 1474 1475 PLAN * 1476 c_simple(OPTION *option, char ***argvp __unused) 1477 { 1478 return palloc(option); 1479 } 1480 1481 /* 1482 * -size n[c] functions -- 1483 * 1484 * True if the file size in bytes, divided by an implementation defined 1485 * value and rounded up to the next integer, is n. If n is followed by 1486 * one of c k M G T P, the size is in bytes, kilobytes, 1487 * megabytes, gigabytes, terabytes or petabytes respectively. 1488 */ 1489 #define FIND_SIZE 512 1490 static int divsize = 1; 1491 1492 int 1493 f_size(PLAN *plan, FTSENT *entry) 1494 { 1495 off_t size; 1496 1497 size = divsize ? (entry->fts_statp->st_size + FIND_SIZE - 1) / 1498 FIND_SIZE : entry->fts_statp->st_size; 1499 COMPARE(size, plan->o_data); 1500 } 1501 1502 PLAN * 1503 c_size(OPTION *option, char ***argvp) 1504 { 1505 char *size_str; 1506 PLAN *new; 1507 char endch; 1508 off_t scale; 1509 1510 size_str = nextarg(option, argvp); 1511 ftsoptions &= ~FTS_NOSTAT; 1512 1513 new = palloc(option); 1514 endch = 'c'; 1515 new->o_data = find_parsenum(new, option->name, size_str, &endch); 1516 if (endch != '\0') { 1517 divsize = 0; 1518 1519 switch (endch) { 1520 case 'c': /* characters */ 1521 scale = 0x1LL; 1522 break; 1523 case 'k': /* kilobytes 1<<10 */ 1524 scale = 0x400LL; 1525 break; 1526 case 'M': /* megabytes 1<<20 */ 1527 scale = 0x100000LL; 1528 break; 1529 case 'G': /* gigabytes 1<<30 */ 1530 scale = 0x40000000LL; 1531 break; 1532 case 'T': /* terabytes 1<<40 */ 1533 scale = 0x10000000000LL; 1534 break; 1535 case 'P': /* petabytes 1<<50 */ 1536 scale = 0x4000000000000LL; 1537 break; 1538 default: 1539 errx(1, "%s: %s: illegal trailing character", 1540 option->name, size_str); 1541 break; 1542 } 1543 if (new->o_data > QUAD_MAX / scale) 1544 errx(1, "%s: %s: value too large", 1545 option->name, size_str); 1546 new->o_data *= scale; 1547 } 1548 return new; 1549 } 1550 1551 /* 1552 * -sparse functions -- 1553 * 1554 * Check if a file is sparse by finding if it occupies fewer blocks 1555 * than we expect based on its size. 1556 */ 1557 int 1558 f_sparse(PLAN *plan __unused, FTSENT *entry) 1559 { 1560 off_t expected_blocks; 1561 1562 expected_blocks = (entry->fts_statp->st_size + 511) / 512; 1563 return entry->fts_statp->st_blocks < expected_blocks; 1564 } 1565 1566 PLAN * 1567 c_sparse(OPTION *option, char ***argvp __unused) 1568 { 1569 ftsoptions &= ~FTS_NOSTAT; 1570 1571 return palloc(option); 1572 } 1573 1574 /* 1575 * -type c functions -- 1576 * 1577 * True if the type of the file is c, where c is b, c, d, p, f or w 1578 * for block special file, character special file, directory, FIFO, 1579 * regular file or whiteout respectively. 1580 */ 1581 int 1582 f_type(PLAN *plan, FTSENT *entry) 1583 { 1584 if (plan->m_data == S_IFDIR) 1585 return (entry->fts_info == FTS_D || entry->fts_info == FTS_DC || 1586 entry->fts_info == FTS_DNR || entry->fts_info == FTS_DOT || 1587 entry->fts_info == FTS_DP); 1588 else 1589 return (entry->fts_statp->st_mode & S_IFMT) == plan->m_data; 1590 } 1591 1592 PLAN * 1593 c_type(OPTION *option, char ***argvp) 1594 { 1595 char *typestring; 1596 PLAN *new; 1597 mode_t mask; 1598 1599 typestring = nextarg(option, argvp); 1600 if (typestring[0] != 'd') 1601 ftsoptions &= ~FTS_NOSTAT; 1602 1603 switch (typestring[0]) { 1604 case 'b': 1605 mask = S_IFBLK; 1606 break; 1607 case 'c': 1608 mask = S_IFCHR; 1609 break; 1610 case 'd': 1611 mask = S_IFDIR; 1612 break; 1613 case 'f': 1614 mask = S_IFREG; 1615 break; 1616 case 'l': 1617 mask = S_IFLNK; 1618 break; 1619 case 'p': 1620 mask = S_IFIFO; 1621 break; 1622 case 's': 1623 mask = S_IFSOCK; 1624 break; 1625 #if defined(FTS_WHITEOUT) && defined(S_IFWHT) 1626 case 'w': 1627 mask = S_IFWHT; 1628 ftsoptions |= FTS_WHITEOUT; 1629 break; 1630 #endif /* FTS_WHITEOUT */ 1631 default: 1632 errx(1, "%s: %s: unknown type", option->name, typestring); 1633 } 1634 1635 new = palloc(option); 1636 new->m_data = mask; 1637 return new; 1638 } 1639 1640 /* 1641 * -user uname functions -- 1642 * 1643 * True if the file belongs to the user uname. If uname is numeric and 1644 * an equivalent of the getpwnam() S9.2.2 [POSIX.1] function does not 1645 * return a valid user name, uname is taken as a user ID. 1646 */ 1647 int 1648 f_user(PLAN *plan, FTSENT *entry) 1649 { 1650 COMPARE(entry->fts_statp->st_uid, plan->u_data); 1651 } 1652 1653 PLAN * 1654 c_user(OPTION *option, char ***argvp) 1655 { 1656 char *username; 1657 PLAN *new; 1658 struct passwd *p; 1659 uid_t uid; 1660 1661 username = nextarg(option, argvp); 1662 ftsoptions &= ~FTS_NOSTAT; 1663 1664 new = palloc(option); 1665 p = getpwnam(username); 1666 if (p == NULL) { 1667 char* cp = username; 1668 if( username[0] == '-' || username[0] == '+' ) 1669 username++; 1670 uid = atoi(username); 1671 if (uid == 0 && username[0] != '0') 1672 errx(1, "%s: %s: no such user", option->name, username); 1673 uid = find_parsenum(new, option->name, cp, NULL); 1674 } else 1675 uid = p->pw_uid; 1676 1677 new->u_data = uid; 1678 return new; 1679 } 1680 1681 /* 1682 * -xdev functions -- 1683 * 1684 * Always true, causes find not to descend past directories that have a 1685 * different device ID (st_dev, see stat() S5.6.2 [POSIX.1]) 1686 */ 1687 PLAN * 1688 c_xdev(OPTION *option, char ***argvp __unused) 1689 { 1690 ftsoptions |= FTS_XDEV; 1691 1692 return palloc(option); 1693 } 1694 1695 /* 1696 * ( expression ) functions -- 1697 * 1698 * True if expression is true. 1699 */ 1700 int 1701 f_expr(PLAN *plan, FTSENT *entry) 1702 { 1703 PLAN *p; 1704 int state = 0; 1705 1706 for (p = plan->p_data[0]; 1707 p && (state = (p->execute)(p, entry)); p = p->next); 1708 return state; 1709 } 1710 1711 /* 1712 * f_openparen and f_closeparen nodes are temporary place markers. They are 1713 * eliminated during phase 2 of find_formplan() --- the '(' node is converted 1714 * to a f_expr node containing the expression and the ')' node is discarded. 1715 * The functions themselves are only used as constants. 1716 */ 1717 1718 int 1719 f_openparen(PLAN *plan __unused, FTSENT *entry __unused) 1720 { 1721 abort(); 1722 } 1723 1724 int 1725 f_closeparen(PLAN *plan __unused, FTSENT *entry __unused) 1726 { 1727 abort(); 1728 } 1729 1730 /* c_openparen == c_simple */ 1731 /* c_closeparen == c_simple */ 1732 1733 /* 1734 * AND operator. Since AND is implicit, no node is allocated. 1735 */ 1736 PLAN * 1737 c_and(OPTION *option __unused, char ***argvp __unused) 1738 { 1739 return NULL; 1740 } 1741 1742 /* 1743 * ! expression functions -- 1744 * 1745 * Negation of a primary; the unary NOT operator. 1746 */ 1747 int 1748 f_not(PLAN *plan, FTSENT *entry) 1749 { 1750 PLAN *p; 1751 int state = 0; 1752 1753 for (p = plan->p_data[0]; 1754 p && (state = (p->execute)(p, entry)); p = p->next); 1755 return !state; 1756 } 1757 1758 /* c_not == c_simple */ 1759 1760 /* 1761 * expression -o expression functions -- 1762 * 1763 * Alternation of primaries; the OR operator. The second expression is 1764 * not evaluated if the first expression is true. 1765 */ 1766 int 1767 f_or(PLAN *plan, FTSENT *entry) 1768 { 1769 PLAN *p; 1770 int state = 0; 1771 1772 for (p = plan->p_data[0]; 1773 p && (state = (p->execute)(p, entry)); p = p->next); 1774 1775 if (state) 1776 return 1; 1777 1778 for (p = plan->p_data[1]; 1779 p && (state = (p->execute)(p, entry)); p = p->next); 1780 return state; 1781 } 1782 1783 /* c_or == c_simple */ 1784 1785 /* 1786 * -false 1787 * 1788 * Always false. 1789 */ 1790 int 1791 f_false(PLAN *plan __unused, FTSENT *entry __unused) 1792 { 1793 return 0; 1794 } 1795 1796 /* c_false == c_simple */ 1797 1798 /* 1799 * -quit 1800 * 1801 * Exits the program 1802 */ 1803 int 1804 f_quit(PLAN *plan __unused, FTSENT *entry __unused) 1805 { 1806 finish_execplus(); 1807 exit(exitstatus); 1808 } 1809 1810 /* c_quit == c_simple */ 1811