1 /*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Cimarron D. Taylor of the University of California, Berkeley. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #ifndef lint 34 #if 0 35 static const char sccsid[] = "@(#)function.c 8.10 (Berkeley) 5/4/95"; 36 #endif 37 #endif /* not lint */ 38 39 #include <sys/cdefs.h> 40 __FBSDID("$FreeBSD$"); 41 42 #include <sys/param.h> 43 #include <sys/ucred.h> 44 #include <sys/stat.h> 45 #include <sys/types.h> 46 #include <sys/acl.h> 47 #include <sys/wait.h> 48 #include <sys/mount.h> 49 50 #include <dirent.h> 51 #include <err.h> 52 #include <errno.h> 53 #include <fnmatch.h> 54 #include <fts.h> 55 #include <grp.h> 56 #include <limits.h> 57 #include <pwd.h> 58 #include <regex.h> 59 #include <stdio.h> 60 #include <stdlib.h> 61 #include <string.h> 62 #include <unistd.h> 63 #include <ctype.h> 64 65 #include "find.h" 66 67 static PLAN *palloc(OPTION *); 68 static long long find_parsenum(PLAN *, const char *, char *, char *); 69 static long long find_parsetime(PLAN *, const char *, char *); 70 static char *nextarg(OPTION *, char ***); 71 72 extern char **environ; 73 74 static PLAN *lastexecplus = NULL; 75 76 #define COMPARE(a, b) do { \ 77 switch (plan->flags & F_ELG_MASK) { \ 78 case F_EQUAL: \ 79 return (a == b); \ 80 case F_LESSTHAN: \ 81 return (a < b); \ 82 case F_GREATER: \ 83 return (a > b); \ 84 default: \ 85 abort(); \ 86 } \ 87 } while(0) 88 89 static PLAN * 90 palloc(OPTION *option) 91 { 92 PLAN *new; 93 94 if ((new = malloc(sizeof(PLAN))) == NULL) 95 err(1, NULL); 96 new->execute = option->execute; 97 new->flags = option->flags; 98 new->next = NULL; 99 return new; 100 } 101 102 /* 103 * find_parsenum -- 104 * Parse a string of the form [+-]# and return the value. 105 */ 106 static long long 107 find_parsenum(PLAN *plan, const char *option, char *vp, char *endch) 108 { 109 long long value; 110 char *endchar, *str; /* Pointer to character ending conversion. */ 111 112 /* Determine comparison from leading + or -. */ 113 str = vp; 114 switch (*str) { 115 case '+': 116 ++str; 117 plan->flags |= F_GREATER; 118 break; 119 case '-': 120 ++str; 121 plan->flags |= F_LESSTHAN; 122 break; 123 default: 124 plan->flags |= F_EQUAL; 125 break; 126 } 127 128 /* 129 * Convert the string with strtoq(). Note, if strtoq() returns zero 130 * and endchar points to the beginning of the string we know we have 131 * a syntax error. 132 */ 133 value = strtoq(str, &endchar, 10); 134 if (value == 0 && endchar == str) 135 errx(1, "%s: %s: illegal numeric value", option, vp); 136 if (endchar[0] && endch == NULL) 137 errx(1, "%s: %s: illegal trailing character", option, vp); 138 if (endch) 139 *endch = endchar[0]; 140 return value; 141 } 142 143 /* 144 * find_parsetime -- 145 * Parse a string of the form [+-]([0-9]+[smhdw]?)+ and return the value. 146 */ 147 static long long 148 find_parsetime(PLAN *plan, const char *option, char *vp) 149 { 150 long long secs, value; 151 char *str, *unit; /* Pointer to character ending conversion. */ 152 153 /* Determine comparison from leading + or -. */ 154 str = vp; 155 switch (*str) { 156 case '+': 157 ++str; 158 plan->flags |= F_GREATER; 159 break; 160 case '-': 161 ++str; 162 plan->flags |= F_LESSTHAN; 163 break; 164 default: 165 plan->flags |= F_EQUAL; 166 break; 167 } 168 169 value = strtoq(str, &unit, 10); 170 if (value == 0 && unit == str) { 171 errx(1, "%s: %s: illegal time value", option, vp); 172 /* NOTREACHED */ 173 } 174 if (*unit == '\0') 175 return value; 176 177 /* Units syntax. */ 178 secs = 0; 179 for (;;) { 180 switch(*unit) { 181 case 's': /* seconds */ 182 secs += value; 183 break; 184 case 'm': /* minutes */ 185 secs += value * 60; 186 break; 187 case 'h': /* hours */ 188 secs += value * 3600; 189 break; 190 case 'd': /* days */ 191 secs += value * 86400; 192 break; 193 case 'w': /* weeks */ 194 secs += value * 604800; 195 break; 196 default: 197 errx(1, "%s: %s: bad unit '%c'", option, vp, *unit); 198 /* NOTREACHED */ 199 } 200 str = unit + 1; 201 if (*str == '\0') /* EOS */ 202 break; 203 value = strtoq(str, &unit, 10); 204 if (value == 0 && unit == str) { 205 errx(1, "%s: %s: illegal time value", option, vp); 206 /* NOTREACHED */ 207 } 208 if (*unit == '\0') { 209 errx(1, "%s: %s: missing trailing unit", option, vp); 210 /* NOTREACHED */ 211 } 212 } 213 plan->flags |= F_EXACTTIME; 214 return secs; 215 } 216 217 /* 218 * nextarg -- 219 * Check that another argument still exists, return a pointer to it, 220 * and increment the argument vector pointer. 221 */ 222 static char * 223 nextarg(OPTION *option, char ***argvp) 224 { 225 char *arg; 226 227 if ((arg = **argvp) == 0) 228 errx(1, "%s: requires additional arguments", option->name); 229 (*argvp)++; 230 return arg; 231 } /* nextarg() */ 232 233 /* 234 * The value of n for the inode times (atime, birthtime, ctime, mtime) is a 235 * range, i.e. n matches from (n - 1) to n 24 hour periods. This interacts 236 * with -n, such that "-mtime -1" would be less than 0 days, which isn't what 237 * the user wanted. Correct so that -1 is "less than 1". 238 */ 239 #define TIME_CORRECT(p) \ 240 if (((p)->flags & F_ELG_MASK) == F_LESSTHAN) \ 241 ++((p)->t_data.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 acl_free(facl); 408 return (0); 409 } 410 if (trivial) 411 return (0); 412 return (1); 413 } 414 415 PLAN * 416 c_acl(OPTION *option, char ***argvp __unused) 417 { 418 ftsoptions &= ~FTS_NOSTAT; 419 return (palloc(option)); 420 } 421 422 /* 423 * -delete functions -- 424 * 425 * True always. Makes its best shot and continues on regardless. 426 */ 427 int 428 f_delete(PLAN *plan __unused, FTSENT *entry) 429 { 430 /* ignore these from fts */ 431 if (strcmp(entry->fts_accpath, ".") == 0 || 432 strcmp(entry->fts_accpath, "..") == 0) 433 return 1; 434 435 /* sanity check */ 436 if (isdepth == 0 || /* depth off */ 437 (ftsoptions & FTS_NOSTAT)) /* not stat()ing */ 438 errx(1, "-delete: insecure options got turned on"); 439 440 if (!(ftsoptions & FTS_PHYSICAL) || /* physical off */ 441 (ftsoptions & FTS_LOGICAL)) /* or finally, logical on */ 442 errx(1, "-delete: forbidden when symlinks are followed"); 443 444 /* Potentially unsafe - do not accept relative paths whatsoever */ 445 if (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 return (pid != -1 && WIFEXITED(status) && !WEXITSTATUS(status)); 674 } 675 676 /* 677 * c_exec, c_execdir, c_ok -- 678 * build three parallel arrays, one with pointers to the strings passed 679 * on the command line, one with (possibly duplicated) pointers to the 680 * argv array, and one with integer values that are lengths of the 681 * strings, but also flags meaning that the string has to be massaged. 682 */ 683 PLAN * 684 c_exec(OPTION *option, char ***argvp) 685 { 686 PLAN *new; /* node returned */ 687 long argmax; 688 int cnt, i; 689 char **argv, **ap, **ep, *p; 690 691 /* This would defeat -execdir's intended security. */ 692 if (option->flags & F_EXECDIR && ftsoptions & FTS_NOCHDIR) 693 errx(1, "%s: forbidden when the current directory cannot be opened", 694 "-execdir"); 695 696 /* XXX - was in c_execdir, but seems unnecessary!? 697 ftsoptions &= ~FTS_NOSTAT; 698 */ 699 isoutput = 1; 700 701 /* XXX - this is a change from the previous coding */ 702 new = palloc(option); 703 704 for (ap = argv = *argvp;; ++ap) { 705 if (!*ap) 706 errx(1, 707 "%s: no terminating \";\" or \"+\"", option->name); 708 if (**ap == ';') 709 break; 710 if (**ap == '+' && ap != argv && strcmp(*(ap - 1), "{}") == 0) { 711 new->flags |= F_EXECPLUS; 712 break; 713 } 714 } 715 716 if (ap == argv) 717 errx(1, "%s: no command specified", option->name); 718 719 cnt = ap - *argvp + 1; 720 if (new->flags & F_EXECPLUS) { 721 new->e_ppos = new->e_pbnum = cnt - 2; 722 if ((argmax = sysconf(_SC_ARG_MAX)) == -1) { 723 warn("sysconf(_SC_ARG_MAX)"); 724 argmax = _POSIX_ARG_MAX; 725 } 726 argmax -= 1024; 727 for (ep = environ; *ep != NULL; ep++) 728 argmax -= strlen(*ep) + 1 + sizeof(*ep); 729 argmax -= 1 + sizeof(*ep); 730 /* 731 * Ensure that -execdir ... {} + does not mix files 732 * from different directories in one invocation. 733 * Files from the same directory should be handled 734 * in one invocation but there is no code for it. 735 */ 736 new->e_pnummax = new->flags & F_EXECDIR ? 1 : argmax / 16; 737 argmax -= sizeof(char *) * new->e_pnummax; 738 if (argmax <= 0) 739 errx(1, "no space for arguments"); 740 new->e_psizemax = argmax; 741 new->e_pbsize = 0; 742 cnt += new->e_pnummax + 1; 743 new->e_next = lastexecplus; 744 lastexecplus = new; 745 } 746 if ((new->e_argv = malloc(cnt * sizeof(char *))) == NULL) 747 err(1, NULL); 748 if ((new->e_orig = malloc(cnt * sizeof(char *))) == NULL) 749 err(1, NULL); 750 if ((new->e_len = malloc(cnt * sizeof(int))) == NULL) 751 err(1, NULL); 752 753 for (argv = *argvp, cnt = 0; argv < ap; ++argv, ++cnt) { 754 new->e_orig[cnt] = *argv; 755 if (new->flags & F_EXECPLUS) 756 new->e_pbsize += strlen(*argv) + 1; 757 for (p = *argv; *p; ++p) 758 if (!(new->flags & F_EXECPLUS) && p[0] == '{' && 759 p[1] == '}') { 760 if ((new->e_argv[cnt] = 761 malloc(MAXPATHLEN)) == NULL) 762 err(1, NULL); 763 new->e_len[cnt] = MAXPATHLEN; 764 break; 765 } 766 if (!*p) { 767 new->e_argv[cnt] = *argv; 768 new->e_len[cnt] = 0; 769 } 770 } 771 if (new->flags & F_EXECPLUS) { 772 new->e_psize = new->e_pbsize; 773 cnt--; 774 for (i = 0; i < new->e_pnummax; i++) { 775 new->e_argv[cnt] = NULL; 776 new->e_len[cnt] = 0; 777 cnt++; 778 } 779 argv = ap; 780 goto done; 781 } 782 new->e_argv[cnt] = new->e_orig[cnt] = NULL; 783 784 done: *argvp = argv + 1; 785 return new; 786 } 787 788 /* Finish any pending -exec ... {} + functions. */ 789 void 790 finish_execplus(void) 791 { 792 PLAN *p; 793 794 p = lastexecplus; 795 while (p != NULL) { 796 (p->execute)(p, NULL); 797 p = p->e_next; 798 } 799 } 800 801 int 802 f_flags(PLAN *plan, FTSENT *entry) 803 { 804 u_long flags; 805 806 flags = entry->fts_statp->st_flags; 807 if (plan->flags & F_ATLEAST) 808 return (flags | plan->fl_flags) == flags && 809 !(flags & plan->fl_notflags); 810 else if (plan->flags & F_ANY) 811 return (flags & plan->fl_flags) || 812 (flags | plan->fl_notflags) != flags; 813 else 814 return flags == plan->fl_flags && 815 !(plan->fl_flags & plan->fl_notflags); 816 } 817 818 PLAN * 819 c_flags(OPTION *option, char ***argvp) 820 { 821 char *flags_str; 822 PLAN *new; 823 u_long flags, notflags; 824 825 flags_str = nextarg(option, argvp); 826 ftsoptions &= ~FTS_NOSTAT; 827 828 new = palloc(option); 829 830 if (*flags_str == '-') { 831 new->flags |= F_ATLEAST; 832 flags_str++; 833 } else if (*flags_str == '+') { 834 new->flags |= F_ANY; 835 flags_str++; 836 } 837 if (strtofflags(&flags_str, &flags, ¬flags) == 1) 838 errx(1, "%s: %s: illegal flags string", option->name, flags_str); 839 840 new->fl_flags = flags; 841 new->fl_notflags = notflags; 842 return new; 843 } 844 845 /* 846 * -follow functions -- 847 * 848 * Always true, causes symbolic links to be followed on a global 849 * basis. 850 */ 851 PLAN * 852 c_follow(OPTION *option, char ***argvp __unused) 853 { 854 ftsoptions &= ~FTS_PHYSICAL; 855 ftsoptions |= FTS_LOGICAL; 856 857 return palloc(option); 858 } 859 860 /* 861 * -fstype functions -- 862 * 863 * True if the file is of a certain type. 864 */ 865 int 866 f_fstype(PLAN *plan, FTSENT *entry) 867 { 868 static dev_t curdev; /* need a guaranteed illegal dev value */ 869 static int first = 1; 870 struct statfs sb; 871 static int val_flags; 872 static char fstype[sizeof(sb.f_fstypename)]; 873 char *p, save[2] = {0,0}; 874 875 if ((plan->flags & F_MTMASK) == F_MTUNKNOWN) 876 return 0; 877 878 /* Only check when we cross mount point. */ 879 if (first || curdev != entry->fts_statp->st_dev) { 880 curdev = entry->fts_statp->st_dev; 881 882 /* 883 * Statfs follows symlinks; find wants the link's filesystem, 884 * not where it points. 885 */ 886 if (entry->fts_info == FTS_SL || 887 entry->fts_info == FTS_SLNONE) { 888 if ((p = strrchr(entry->fts_accpath, '/')) != NULL) 889 ++p; 890 else 891 p = entry->fts_accpath; 892 save[0] = p[0]; 893 p[0] = '.'; 894 save[1] = p[1]; 895 p[1] = '\0'; 896 } else 897 p = NULL; 898 899 if (statfs(entry->fts_accpath, &sb)) 900 err(1, "%s", entry->fts_accpath); 901 902 if (p) { 903 p[0] = save[0]; 904 p[1] = save[1]; 905 } 906 907 first = 0; 908 909 /* 910 * Further tests may need both of these values, so 911 * always copy both of them. 912 */ 913 val_flags = sb.f_flags; 914 strlcpy(fstype, sb.f_fstypename, sizeof(fstype)); 915 } 916 switch (plan->flags & F_MTMASK) { 917 case F_MTFLAG: 918 return val_flags & plan->mt_data; 919 case F_MTTYPE: 920 return (strncmp(fstype, plan->c_data, sizeof(fstype)) == 0); 921 default: 922 abort(); 923 } 924 } 925 926 PLAN * 927 c_fstype(OPTION *option, char ***argvp) 928 { 929 char *fsname; 930 PLAN *new; 931 932 fsname = nextarg(option, argvp); 933 ftsoptions &= ~FTS_NOSTAT; 934 935 new = palloc(option); 936 switch (*fsname) { 937 case 'l': 938 if (!strcmp(fsname, "local")) { 939 new->flags |= F_MTFLAG; 940 new->mt_data = MNT_LOCAL; 941 return new; 942 } 943 break; 944 case 'r': 945 if (!strcmp(fsname, "rdonly")) { 946 new->flags |= F_MTFLAG; 947 new->mt_data = MNT_RDONLY; 948 return new; 949 } 950 break; 951 } 952 953 new->flags |= F_MTTYPE; 954 new->c_data = fsname; 955 return new; 956 } 957 958 /* 959 * -group gname functions -- 960 * 961 * True if the file belongs to the group gname. If gname is numeric and 962 * an equivalent of the getgrnam() function does not return a valid group 963 * name, gname is taken as a group ID. 964 */ 965 int 966 f_group(PLAN *plan, FTSENT *entry) 967 { 968 COMPARE(entry->fts_statp->st_gid, plan->g_data); 969 } 970 971 PLAN * 972 c_group(OPTION *option, char ***argvp) 973 { 974 char *gname; 975 PLAN *new; 976 struct group *g; 977 gid_t gid; 978 979 gname = nextarg(option, argvp); 980 ftsoptions &= ~FTS_NOSTAT; 981 982 new = palloc(option); 983 g = getgrnam(gname); 984 if (g == NULL) { 985 char* cp = gname; 986 if (gname[0] == '-' || gname[0] == '+') 987 gname++; 988 gid = atoi(gname); 989 if (gid == 0 && gname[0] != '0') 990 errx(1, "%s: %s: no such group", option->name, gname); 991 gid = find_parsenum(new, option->name, cp, NULL); 992 } else 993 gid = g->gr_gid; 994 995 new->g_data = gid; 996 return new; 997 } 998 999 /* 1000 * -ignore_readdir_race functions -- 1001 * 1002 * Always true. Ignore errors which occur if a file or a directory 1003 * in a starting point gets deleted between reading the name and calling 1004 * stat on it while find is traversing the starting point. 1005 */ 1006 1007 PLAN * 1008 c_ignore_readdir_race(OPTION *option, char ***argvp __unused) 1009 { 1010 if (strcmp(option->name, "-ignore_readdir_race") == 0) 1011 ignore_readdir_race = 1; 1012 else 1013 ignore_readdir_race = 0; 1014 1015 return palloc(option); 1016 } 1017 1018 /* 1019 * -inum n functions -- 1020 * 1021 * True if the file has inode # n. 1022 */ 1023 int 1024 f_inum(PLAN *plan, FTSENT *entry) 1025 { 1026 COMPARE(entry->fts_statp->st_ino, plan->i_data); 1027 } 1028 1029 PLAN * 1030 c_inum(OPTION *option, char ***argvp) 1031 { 1032 char *inum_str; 1033 PLAN *new; 1034 1035 inum_str = nextarg(option, argvp); 1036 ftsoptions &= ~FTS_NOSTAT; 1037 1038 new = palloc(option); 1039 new->i_data = find_parsenum(new, option->name, inum_str, NULL); 1040 return new; 1041 } 1042 1043 /* 1044 * -samefile FN 1045 * 1046 * True if the file has the same inode (eg hard link) FN 1047 */ 1048 1049 /* f_samefile is just f_inum */ 1050 PLAN * 1051 c_samefile(OPTION *option, char ***argvp) 1052 { 1053 char *fn; 1054 PLAN *new; 1055 struct stat sb; 1056 1057 fn = nextarg(option, argvp); 1058 ftsoptions &= ~FTS_NOSTAT; 1059 1060 new = palloc(option); 1061 if (stat(fn, &sb)) 1062 err(1, "%s", fn); 1063 new->i_data = sb.st_ino; 1064 return new; 1065 } 1066 1067 /* 1068 * -links n functions -- 1069 * 1070 * True if the file has n links. 1071 */ 1072 int 1073 f_links(PLAN *plan, FTSENT *entry) 1074 { 1075 COMPARE(entry->fts_statp->st_nlink, plan->l_data); 1076 } 1077 1078 PLAN * 1079 c_links(OPTION *option, char ***argvp) 1080 { 1081 char *nlinks; 1082 PLAN *new; 1083 1084 nlinks = nextarg(option, argvp); 1085 ftsoptions &= ~FTS_NOSTAT; 1086 1087 new = palloc(option); 1088 new->l_data = (nlink_t)find_parsenum(new, option->name, nlinks, NULL); 1089 return new; 1090 } 1091 1092 /* 1093 * -ls functions -- 1094 * 1095 * Always true - prints the current entry to stdout in "ls" format. 1096 */ 1097 int 1098 f_ls(PLAN *plan __unused, FTSENT *entry) 1099 { 1100 printlong(entry->fts_path, entry->fts_accpath, entry->fts_statp); 1101 return 1; 1102 } 1103 1104 PLAN * 1105 c_ls(OPTION *option, char ***argvp __unused) 1106 { 1107 ftsoptions &= ~FTS_NOSTAT; 1108 isoutput = 1; 1109 1110 return palloc(option); 1111 } 1112 1113 /* 1114 * -name functions -- 1115 * 1116 * True if the basename of the filename being examined 1117 * matches pattern using Pattern Matching Notation S3.14 1118 */ 1119 int 1120 f_name(PLAN *plan, FTSENT *entry) 1121 { 1122 char fn[PATH_MAX]; 1123 const char *name; 1124 1125 if (plan->flags & F_LINK) { 1126 name = fn; 1127 if (readlink(entry->fts_path, fn, sizeof(fn)) == -1) 1128 return 0; 1129 } else 1130 name = entry->fts_name; 1131 return !fnmatch(plan->c_data, name, 1132 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 1133 } 1134 1135 PLAN * 1136 c_name(OPTION *option, char ***argvp) 1137 { 1138 char *pattern; 1139 PLAN *new; 1140 1141 pattern = nextarg(option, argvp); 1142 new = palloc(option); 1143 new->c_data = pattern; 1144 return new; 1145 } 1146 1147 /* 1148 * -newer file functions -- 1149 * 1150 * True if the current file has been modified more recently 1151 * then the modification time of the file named by the pathname 1152 * file. 1153 */ 1154 int 1155 f_newer(PLAN *plan, FTSENT *entry) 1156 { 1157 struct timespec ft; 1158 1159 if (plan->flags & F_TIME_C) 1160 ft = entry->fts_statp->st_ctim; 1161 else if (plan->flags & F_TIME_A) 1162 ft = entry->fts_statp->st_atim; 1163 else if (plan->flags & F_TIME_B) 1164 ft = entry->fts_statp->st_birthtim; 1165 else 1166 ft = entry->fts_statp->st_mtim; 1167 return (ft.tv_sec > plan->t_data.tv_sec || 1168 (ft.tv_sec == plan->t_data.tv_sec && 1169 ft.tv_nsec > plan->t_data.tv_nsec)); 1170 } 1171 1172 PLAN * 1173 c_newer(OPTION *option, char ***argvp) 1174 { 1175 char *fn_or_tspec; 1176 PLAN *new; 1177 struct stat sb; 1178 1179 fn_or_tspec = nextarg(option, argvp); 1180 ftsoptions &= ~FTS_NOSTAT; 1181 1182 new = palloc(option); 1183 /* compare against what */ 1184 if (option->flags & F_TIME2_T) { 1185 new->t_data.tv_sec = get_date(fn_or_tspec); 1186 if (new->t_data.tv_sec == (time_t) -1) 1187 errx(1, "Can't parse date/time: %s", fn_or_tspec); 1188 /* Use the seconds only in the comparison. */ 1189 new->t_data.tv_nsec = 999999999; 1190 } else { 1191 if (stat(fn_or_tspec, &sb)) 1192 err(1, "%s", fn_or_tspec); 1193 if (option->flags & F_TIME2_C) 1194 new->t_data = sb.st_ctim; 1195 else if (option->flags & F_TIME2_A) 1196 new->t_data = sb.st_atim; 1197 else if (option->flags & F_TIME2_B) 1198 new->t_data = sb.st_birthtim; 1199 else 1200 new->t_data = sb.st_mtim; 1201 } 1202 return new; 1203 } 1204 1205 /* 1206 * -nogroup functions -- 1207 * 1208 * True if file belongs to a user ID for which the equivalent 1209 * of the getgrnam() 9.2.1 [POSIX.1] function returns NULL. 1210 */ 1211 int 1212 f_nogroup(PLAN *plan __unused, FTSENT *entry) 1213 { 1214 return group_from_gid(entry->fts_statp->st_gid, 1) == NULL; 1215 } 1216 1217 PLAN * 1218 c_nogroup(OPTION *option, char ***argvp __unused) 1219 { 1220 ftsoptions &= ~FTS_NOSTAT; 1221 1222 return palloc(option); 1223 } 1224 1225 /* 1226 * -nouser functions -- 1227 * 1228 * True if file belongs to a user ID for which the equivalent 1229 * of the getpwuid() 9.2.2 [POSIX.1] function returns NULL. 1230 */ 1231 int 1232 f_nouser(PLAN *plan __unused, FTSENT *entry) 1233 { 1234 return user_from_uid(entry->fts_statp->st_uid, 1) == NULL; 1235 } 1236 1237 PLAN * 1238 c_nouser(OPTION *option, char ***argvp __unused) 1239 { 1240 ftsoptions &= ~FTS_NOSTAT; 1241 1242 return palloc(option); 1243 } 1244 1245 /* 1246 * -path functions -- 1247 * 1248 * True if the path of the filename being examined 1249 * matches pattern using Pattern Matching Notation S3.14 1250 */ 1251 int 1252 f_path(PLAN *plan, FTSENT *entry) 1253 { 1254 return !fnmatch(plan->c_data, entry->fts_path, 1255 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 1256 } 1257 1258 /* c_path is the same as c_name */ 1259 1260 /* 1261 * -perm functions -- 1262 * 1263 * The mode argument is used to represent file mode bits. If it starts 1264 * with a leading digit, it's treated as an octal mode, otherwise as a 1265 * symbolic mode. 1266 */ 1267 int 1268 f_perm(PLAN *plan, FTSENT *entry) 1269 { 1270 mode_t mode; 1271 1272 mode = entry->fts_statp->st_mode & 1273 (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO); 1274 if (plan->flags & F_ATLEAST) 1275 return (plan->m_data | mode) == mode; 1276 else if (plan->flags & F_ANY) 1277 return (mode & plan->m_data); 1278 else 1279 return mode == plan->m_data; 1280 /* NOTREACHED */ 1281 } 1282 1283 PLAN * 1284 c_perm(OPTION *option, char ***argvp) 1285 { 1286 char *perm; 1287 PLAN *new; 1288 mode_t *set; 1289 1290 perm = nextarg(option, argvp); 1291 ftsoptions &= ~FTS_NOSTAT; 1292 1293 new = palloc(option); 1294 1295 if (*perm == '-') { 1296 new->flags |= F_ATLEAST; 1297 ++perm; 1298 } else if (*perm == '+') { 1299 new->flags |= F_ANY; 1300 ++perm; 1301 } 1302 1303 if ((set = setmode(perm)) == NULL) 1304 errx(1, "%s: %s: illegal mode string", option->name, perm); 1305 1306 new->m_data = getmode(set, 0); 1307 free(set); 1308 return new; 1309 } 1310 1311 /* 1312 * -print functions -- 1313 * 1314 * Always true, causes the current pathname to be written to 1315 * standard output. 1316 */ 1317 int 1318 f_print(PLAN *plan __unused, FTSENT *entry) 1319 { 1320 (void)puts(entry->fts_path); 1321 return 1; 1322 } 1323 1324 PLAN * 1325 c_print(OPTION *option, char ***argvp __unused) 1326 { 1327 isoutput = 1; 1328 1329 return palloc(option); 1330 } 1331 1332 /* 1333 * -print0 functions -- 1334 * 1335 * Always true, causes the current pathname to be written to 1336 * standard output followed by a NUL character 1337 */ 1338 int 1339 f_print0(PLAN *plan __unused, FTSENT *entry) 1340 { 1341 fputs(entry->fts_path, stdout); 1342 fputc('\0', stdout); 1343 return 1; 1344 } 1345 1346 /* c_print0 is the same as c_print */ 1347 1348 /* 1349 * -prune functions -- 1350 * 1351 * Prune a portion of the hierarchy. 1352 */ 1353 int 1354 f_prune(PLAN *plan __unused, FTSENT *entry) 1355 { 1356 if (fts_set(tree, entry, FTS_SKIP)) 1357 err(1, "%s", entry->fts_path); 1358 return 1; 1359 } 1360 1361 /* c_prune == c_simple */ 1362 1363 /* 1364 * -regex functions -- 1365 * 1366 * True if the whole path of the file matches pattern using 1367 * regular expression. 1368 */ 1369 int 1370 f_regex(PLAN *plan, FTSENT *entry) 1371 { 1372 char *str; 1373 int len; 1374 regex_t *pre; 1375 regmatch_t pmatch; 1376 int errcode; 1377 char errbuf[LINE_MAX]; 1378 int matched; 1379 1380 pre = plan->re_data; 1381 str = entry->fts_path; 1382 len = strlen(str); 1383 matched = 0; 1384 1385 pmatch.rm_so = 0; 1386 pmatch.rm_eo = len; 1387 1388 errcode = regexec(pre, str, 1, &pmatch, REG_STARTEND); 1389 1390 if (errcode != 0 && errcode != REG_NOMATCH) { 1391 regerror(errcode, pre, errbuf, sizeof errbuf); 1392 errx(1, "%s: %s", 1393 plan->flags & F_IGNCASE ? "-iregex" : "-regex", errbuf); 1394 } 1395 1396 if (errcode == 0 && pmatch.rm_so == 0 && pmatch.rm_eo == len) 1397 matched = 1; 1398 1399 return matched; 1400 } 1401 1402 PLAN * 1403 c_regex(OPTION *option, char ***argvp) 1404 { 1405 PLAN *new; 1406 char *pattern; 1407 regex_t *pre; 1408 int errcode; 1409 char errbuf[LINE_MAX]; 1410 1411 if ((pre = malloc(sizeof(regex_t))) == NULL) 1412 err(1, NULL); 1413 1414 pattern = nextarg(option, argvp); 1415 1416 if ((errcode = regcomp(pre, pattern, 1417 regexp_flags | (option->flags & F_IGNCASE ? REG_ICASE : 0))) != 0) { 1418 regerror(errcode, pre, errbuf, sizeof errbuf); 1419 errx(1, "%s: %s: %s", 1420 option->flags & F_IGNCASE ? "-iregex" : "-regex", 1421 pattern, errbuf); 1422 } 1423 1424 new = palloc(option); 1425 new->re_data = pre; 1426 1427 return new; 1428 } 1429 1430 /* c_simple covers c_prune, c_openparen, c_closeparen, c_not, c_or, c_true, c_false */ 1431 1432 PLAN * 1433 c_simple(OPTION *option, char ***argvp __unused) 1434 { 1435 return palloc(option); 1436 } 1437 1438 /* 1439 * -size n[c] functions -- 1440 * 1441 * True if the file size in bytes, divided by an implementation defined 1442 * value and rounded up to the next integer, is n. If n is followed by 1443 * one of c k M G T P, the size is in bytes, kilobytes, 1444 * megabytes, gigabytes, terabytes or petabytes respectively. 1445 */ 1446 #define FIND_SIZE 512 1447 static int divsize = 1; 1448 1449 int 1450 f_size(PLAN *plan, FTSENT *entry) 1451 { 1452 off_t size; 1453 1454 size = divsize ? (entry->fts_statp->st_size + FIND_SIZE - 1) / 1455 FIND_SIZE : entry->fts_statp->st_size; 1456 COMPARE(size, plan->o_data); 1457 } 1458 1459 PLAN * 1460 c_size(OPTION *option, char ***argvp) 1461 { 1462 char *size_str; 1463 PLAN *new; 1464 char endch; 1465 off_t scale; 1466 1467 size_str = nextarg(option, argvp); 1468 ftsoptions &= ~FTS_NOSTAT; 1469 1470 new = palloc(option); 1471 endch = 'c'; 1472 new->o_data = find_parsenum(new, option->name, size_str, &endch); 1473 if (endch != '\0') { 1474 divsize = 0; 1475 1476 switch (endch) { 1477 case 'c': /* characters */ 1478 scale = 0x1LL; 1479 break; 1480 case 'k': /* kilobytes 1<<10 */ 1481 scale = 0x400LL; 1482 break; 1483 case 'M': /* megabytes 1<<20 */ 1484 scale = 0x100000LL; 1485 break; 1486 case 'G': /* gigabytes 1<<30 */ 1487 scale = 0x40000000LL; 1488 break; 1489 case 'T': /* terabytes 1<<40 */ 1490 scale = 0x1000000000LL; 1491 break; 1492 case 'P': /* petabytes 1<<50 */ 1493 scale = 0x4000000000000LL; 1494 break; 1495 default: 1496 errx(1, "%s: %s: illegal trailing character", 1497 option->name, size_str); 1498 break; 1499 } 1500 if (new->o_data > QUAD_MAX / scale) 1501 errx(1, "%s: %s: value too large", 1502 option->name, size_str); 1503 new->o_data *= scale; 1504 } 1505 return new; 1506 } 1507 1508 /* 1509 * -sparse functions -- 1510 * 1511 * Check if a file is sparse by finding if it occupies fewer blocks 1512 * than we expect based on its size. 1513 */ 1514 int 1515 f_sparse(PLAN *plan __unused, FTSENT *entry) 1516 { 1517 off_t expected_blocks; 1518 1519 expected_blocks = (entry->fts_statp->st_size + 511) / 512; 1520 return entry->fts_statp->st_blocks < expected_blocks; 1521 } 1522 1523 PLAN * 1524 c_sparse(OPTION *option, char ***argvp __unused) 1525 { 1526 ftsoptions &= ~FTS_NOSTAT; 1527 1528 return palloc(option); 1529 } 1530 1531 /* 1532 * -type c functions -- 1533 * 1534 * True if the type of the file is c, where c is b, c, d, p, f or w 1535 * for block special file, character special file, directory, FIFO, 1536 * regular file or whiteout respectively. 1537 */ 1538 int 1539 f_type(PLAN *plan, FTSENT *entry) 1540 { 1541 return (entry->fts_statp->st_mode & S_IFMT) == plan->m_data; 1542 } 1543 1544 PLAN * 1545 c_type(OPTION *option, char ***argvp) 1546 { 1547 char *typestring; 1548 PLAN *new; 1549 mode_t mask; 1550 1551 typestring = nextarg(option, argvp); 1552 ftsoptions &= ~FTS_NOSTAT; 1553 1554 switch (typestring[0]) { 1555 case 'b': 1556 mask = S_IFBLK; 1557 break; 1558 case 'c': 1559 mask = S_IFCHR; 1560 break; 1561 case 'd': 1562 mask = S_IFDIR; 1563 break; 1564 case 'f': 1565 mask = S_IFREG; 1566 break; 1567 case 'l': 1568 mask = S_IFLNK; 1569 break; 1570 case 'p': 1571 mask = S_IFIFO; 1572 break; 1573 case 's': 1574 mask = S_IFSOCK; 1575 break; 1576 #ifdef FTS_WHITEOUT 1577 case 'w': 1578 mask = S_IFWHT; 1579 ftsoptions |= FTS_WHITEOUT; 1580 break; 1581 #endif /* FTS_WHITEOUT */ 1582 default: 1583 errx(1, "%s: %s: unknown type", option->name, typestring); 1584 } 1585 1586 new = palloc(option); 1587 new->m_data = mask; 1588 return new; 1589 } 1590 1591 /* 1592 * -user uname functions -- 1593 * 1594 * True if the file belongs to the user uname. If uname is numeric and 1595 * an equivalent of the getpwnam() S9.2.2 [POSIX.1] function does not 1596 * return a valid user name, uname is taken as a user ID. 1597 */ 1598 int 1599 f_user(PLAN *plan, FTSENT *entry) 1600 { 1601 COMPARE(entry->fts_statp->st_uid, plan->u_data); 1602 } 1603 1604 PLAN * 1605 c_user(OPTION *option, char ***argvp) 1606 { 1607 char *username; 1608 PLAN *new; 1609 struct passwd *p; 1610 uid_t uid; 1611 1612 username = nextarg(option, argvp); 1613 ftsoptions &= ~FTS_NOSTAT; 1614 1615 new = palloc(option); 1616 p = getpwnam(username); 1617 if (p == NULL) { 1618 char* cp = username; 1619 if( username[0] == '-' || username[0] == '+' ) 1620 username++; 1621 uid = atoi(username); 1622 if (uid == 0 && username[0] != '0') 1623 errx(1, "%s: %s: no such user", option->name, username); 1624 uid = find_parsenum(new, option->name, cp, NULL); 1625 } else 1626 uid = p->pw_uid; 1627 1628 new->u_data = uid; 1629 return new; 1630 } 1631 1632 /* 1633 * -xdev functions -- 1634 * 1635 * Always true, causes find not to descend past directories that have a 1636 * different device ID (st_dev, see stat() S5.6.2 [POSIX.1]) 1637 */ 1638 PLAN * 1639 c_xdev(OPTION *option, char ***argvp __unused) 1640 { 1641 ftsoptions |= FTS_XDEV; 1642 1643 return palloc(option); 1644 } 1645 1646 /* 1647 * ( expression ) functions -- 1648 * 1649 * True if expression is true. 1650 */ 1651 int 1652 f_expr(PLAN *plan, FTSENT *entry) 1653 { 1654 PLAN *p; 1655 int state = 0; 1656 1657 for (p = plan->p_data[0]; 1658 p && (state = (p->execute)(p, entry)); p = p->next); 1659 return state; 1660 } 1661 1662 /* 1663 * f_openparen and f_closeparen nodes are temporary place markers. They are 1664 * eliminated during phase 2 of find_formplan() --- the '(' node is converted 1665 * to a f_expr node containing the expression and the ')' node is discarded. 1666 * The functions themselves are only used as constants. 1667 */ 1668 1669 int 1670 f_openparen(PLAN *plan __unused, FTSENT *entry __unused) 1671 { 1672 abort(); 1673 } 1674 1675 int 1676 f_closeparen(PLAN *plan __unused, FTSENT *entry __unused) 1677 { 1678 abort(); 1679 } 1680 1681 /* c_openparen == c_simple */ 1682 /* c_closeparen == c_simple */ 1683 1684 /* 1685 * AND operator. Since AND is implicit, no node is allocated. 1686 */ 1687 PLAN * 1688 c_and(OPTION *option __unused, char ***argvp __unused) 1689 { 1690 return NULL; 1691 } 1692 1693 /* 1694 * ! expression functions -- 1695 * 1696 * Negation of a primary; the unary NOT operator. 1697 */ 1698 int 1699 f_not(PLAN *plan, FTSENT *entry) 1700 { 1701 PLAN *p; 1702 int state = 0; 1703 1704 for (p = plan->p_data[0]; 1705 p && (state = (p->execute)(p, entry)); p = p->next); 1706 return !state; 1707 } 1708 1709 /* c_not == c_simple */ 1710 1711 /* 1712 * expression -o expression functions -- 1713 * 1714 * Alternation of primaries; the OR operator. The second expression is 1715 * not evaluated if the first expression is true. 1716 */ 1717 int 1718 f_or(PLAN *plan, FTSENT *entry) 1719 { 1720 PLAN *p; 1721 int state = 0; 1722 1723 for (p = plan->p_data[0]; 1724 p && (state = (p->execute)(p, entry)); p = p->next); 1725 1726 if (state) 1727 return 1; 1728 1729 for (p = plan->p_data[1]; 1730 p && (state = (p->execute)(p, entry)); p = p->next); 1731 return state; 1732 } 1733 1734 /* c_or == c_simple */ 1735 1736 /* 1737 * -false 1738 * 1739 * Always false. 1740 */ 1741 int 1742 f_false(PLAN *plan __unused, FTSENT *entry __unused) 1743 { 1744 return 0; 1745 } 1746 1747 /* c_false == c_simple */ 1748 1749 /* 1750 * -quit 1751 * 1752 * Exits the program 1753 */ 1754 int 1755 f_quit(PLAN *plan __unused, FTSENT *entry __unused) 1756 { 1757 exit(0); 1758 } 1759 1760 /* c_quit == c_simple */ 1761