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 (entry->fts_level > FTS_ROOTLEVEL && 446 strchr(entry->fts_accpath, '/') != NULL) 447 errx(1, "-delete: %s: relative path potentially not safe", 448 entry->fts_accpath); 449 450 /* Turn off user immutable bits if running as root */ 451 if ((entry->fts_statp->st_flags & (UF_APPEND|UF_IMMUTABLE)) && 452 !(entry->fts_statp->st_flags & (SF_APPEND|SF_IMMUTABLE)) && 453 geteuid() == 0) 454 lchflags(entry->fts_accpath, 455 entry->fts_statp->st_flags &= ~(UF_APPEND|UF_IMMUTABLE)); 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 return (pid != -1 && WIFEXITED(status) && !WEXITSTATUS(status)); 675 } 676 677 /* 678 * c_exec, c_execdir, c_ok -- 679 * build three parallel arrays, one with pointers to the strings passed 680 * on the command line, one with (possibly duplicated) pointers to the 681 * argv array, and one with integer values that are lengths of the 682 * strings, but also flags meaning that the string has to be massaged. 683 */ 684 PLAN * 685 c_exec(OPTION *option, char ***argvp) 686 { 687 PLAN *new; /* node returned */ 688 long argmax; 689 int cnt, i; 690 char **argv, **ap, **ep, *p; 691 692 /* This would defeat -execdir's intended security. */ 693 if (option->flags & F_EXECDIR && ftsoptions & FTS_NOCHDIR) 694 errx(1, "%s: forbidden when the current directory cannot be opened", 695 "-execdir"); 696 697 /* XXX - was in c_execdir, but seems unnecessary!? 698 ftsoptions &= ~FTS_NOSTAT; 699 */ 700 isoutput = 1; 701 702 /* XXX - this is a change from the previous coding */ 703 new = palloc(option); 704 705 for (ap = argv = *argvp;; ++ap) { 706 if (!*ap) 707 errx(1, 708 "%s: no terminating \";\" or \"+\"", option->name); 709 if (**ap == ';') 710 break; 711 if (**ap == '+' && ap != argv && strcmp(*(ap - 1), "{}") == 0) { 712 new->flags |= F_EXECPLUS; 713 break; 714 } 715 } 716 717 if (ap == argv) 718 errx(1, "%s: no command specified", option->name); 719 720 cnt = ap - *argvp + 1; 721 if (new->flags & F_EXECPLUS) { 722 new->e_ppos = new->e_pbnum = cnt - 2; 723 if ((argmax = sysconf(_SC_ARG_MAX)) == -1) { 724 warn("sysconf(_SC_ARG_MAX)"); 725 argmax = _POSIX_ARG_MAX; 726 } 727 argmax -= 1024; 728 for (ep = environ; *ep != NULL; ep++) 729 argmax -= strlen(*ep) + 1 + sizeof(*ep); 730 argmax -= 1 + sizeof(*ep); 731 /* 732 * Ensure that -execdir ... {} + does not mix files 733 * from different directories in one invocation. 734 * Files from the same directory should be handled 735 * in one invocation but there is no code for it. 736 */ 737 new->e_pnummax = new->flags & F_EXECDIR ? 1 : argmax / 16; 738 argmax -= sizeof(char *) * new->e_pnummax; 739 if (argmax <= 0) 740 errx(1, "no space for arguments"); 741 new->e_psizemax = argmax; 742 new->e_pbsize = 0; 743 cnt += new->e_pnummax + 1; 744 new->e_next = lastexecplus; 745 lastexecplus = new; 746 } 747 if ((new->e_argv = malloc(cnt * sizeof(char *))) == NULL) 748 err(1, NULL); 749 if ((new->e_orig = malloc(cnt * sizeof(char *))) == NULL) 750 err(1, NULL); 751 if ((new->e_len = malloc(cnt * sizeof(int))) == NULL) 752 err(1, NULL); 753 754 for (argv = *argvp, cnt = 0; argv < ap; ++argv, ++cnt) { 755 new->e_orig[cnt] = *argv; 756 if (new->flags & F_EXECPLUS) 757 new->e_pbsize += strlen(*argv) + 1; 758 for (p = *argv; *p; ++p) 759 if (!(new->flags & F_EXECPLUS) && p[0] == '{' && 760 p[1] == '}') { 761 if ((new->e_argv[cnt] = 762 malloc(MAXPATHLEN)) == NULL) 763 err(1, NULL); 764 new->e_len[cnt] = MAXPATHLEN; 765 break; 766 } 767 if (!*p) { 768 new->e_argv[cnt] = *argv; 769 new->e_len[cnt] = 0; 770 } 771 } 772 if (new->flags & F_EXECPLUS) { 773 new->e_psize = new->e_pbsize; 774 cnt--; 775 for (i = 0; i < new->e_pnummax; i++) { 776 new->e_argv[cnt] = NULL; 777 new->e_len[cnt] = 0; 778 cnt++; 779 } 780 argv = ap; 781 goto done; 782 } 783 new->e_argv[cnt] = new->e_orig[cnt] = NULL; 784 785 done: *argvp = argv + 1; 786 return new; 787 } 788 789 /* Finish any pending -exec ... {} + functions. */ 790 void 791 finish_execplus(void) 792 { 793 PLAN *p; 794 795 p = lastexecplus; 796 while (p != NULL) { 797 (p->execute)(p, NULL); 798 p = p->e_next; 799 } 800 } 801 802 int 803 f_flags(PLAN *plan, FTSENT *entry) 804 { 805 u_long flags; 806 807 flags = entry->fts_statp->st_flags; 808 if (plan->flags & F_ATLEAST) 809 return (flags | plan->fl_flags) == flags && 810 !(flags & plan->fl_notflags); 811 else if (plan->flags & F_ANY) 812 return (flags & plan->fl_flags) || 813 (flags | plan->fl_notflags) != flags; 814 else 815 return flags == plan->fl_flags && 816 !(plan->fl_flags & plan->fl_notflags); 817 } 818 819 PLAN * 820 c_flags(OPTION *option, char ***argvp) 821 { 822 char *flags_str; 823 PLAN *new; 824 u_long flags, notflags; 825 826 flags_str = nextarg(option, argvp); 827 ftsoptions &= ~FTS_NOSTAT; 828 829 new = palloc(option); 830 831 if (*flags_str == '-') { 832 new->flags |= F_ATLEAST; 833 flags_str++; 834 } else if (*flags_str == '+') { 835 new->flags |= F_ANY; 836 flags_str++; 837 } 838 if (strtofflags(&flags_str, &flags, ¬flags) == 1) 839 errx(1, "%s: %s: illegal flags string", option->name, flags_str); 840 841 new->fl_flags = flags; 842 new->fl_notflags = notflags; 843 return new; 844 } 845 846 /* 847 * -follow functions -- 848 * 849 * Always true, causes symbolic links to be followed on a global 850 * basis. 851 */ 852 PLAN * 853 c_follow(OPTION *option, char ***argvp __unused) 854 { 855 ftsoptions &= ~FTS_PHYSICAL; 856 ftsoptions |= FTS_LOGICAL; 857 858 return palloc(option); 859 } 860 861 /* 862 * -fstype functions -- 863 * 864 * True if the file is of a certain type. 865 */ 866 int 867 f_fstype(PLAN *plan, FTSENT *entry) 868 { 869 static dev_t curdev; /* need a guaranteed illegal dev value */ 870 static int first = 1; 871 struct statfs sb; 872 static int val_flags; 873 static char fstype[sizeof(sb.f_fstypename)]; 874 char *p, save[2] = {0,0}; 875 876 if ((plan->flags & F_MTMASK) == F_MTUNKNOWN) 877 return 0; 878 879 /* Only check when we cross mount point. */ 880 if (first || curdev != entry->fts_statp->st_dev) { 881 curdev = entry->fts_statp->st_dev; 882 883 /* 884 * Statfs follows symlinks; find wants the link's filesystem, 885 * not where it points. 886 */ 887 if (entry->fts_info == FTS_SL || 888 entry->fts_info == FTS_SLNONE) { 889 if ((p = strrchr(entry->fts_accpath, '/')) != NULL) 890 ++p; 891 else 892 p = entry->fts_accpath; 893 save[0] = p[0]; 894 p[0] = '.'; 895 save[1] = p[1]; 896 p[1] = '\0'; 897 } else 898 p = NULL; 899 900 if (statfs(entry->fts_accpath, &sb)) 901 err(1, "%s", entry->fts_accpath); 902 903 if (p) { 904 p[0] = save[0]; 905 p[1] = save[1]; 906 } 907 908 first = 0; 909 910 /* 911 * Further tests may need both of these values, so 912 * always copy both of them. 913 */ 914 val_flags = sb.f_flags; 915 strlcpy(fstype, sb.f_fstypename, sizeof(fstype)); 916 } 917 switch (plan->flags & F_MTMASK) { 918 case F_MTFLAG: 919 return val_flags & plan->mt_data; 920 case F_MTTYPE: 921 return (strncmp(fstype, plan->c_data, sizeof(fstype)) == 0); 922 default: 923 abort(); 924 } 925 } 926 927 PLAN * 928 c_fstype(OPTION *option, char ***argvp) 929 { 930 char *fsname; 931 PLAN *new; 932 933 fsname = nextarg(option, argvp); 934 ftsoptions &= ~FTS_NOSTAT; 935 936 new = palloc(option); 937 switch (*fsname) { 938 case 'l': 939 if (!strcmp(fsname, "local")) { 940 new->flags |= F_MTFLAG; 941 new->mt_data = MNT_LOCAL; 942 return new; 943 } 944 break; 945 case 'r': 946 if (!strcmp(fsname, "rdonly")) { 947 new->flags |= F_MTFLAG; 948 new->mt_data = MNT_RDONLY; 949 return new; 950 } 951 break; 952 } 953 954 new->flags |= F_MTTYPE; 955 new->c_data = fsname; 956 return new; 957 } 958 959 /* 960 * -group gname functions -- 961 * 962 * True if the file belongs to the group gname. If gname is numeric and 963 * an equivalent of the getgrnam() function does not return a valid group 964 * name, gname is taken as a group ID. 965 */ 966 int 967 f_group(PLAN *plan, FTSENT *entry) 968 { 969 COMPARE(entry->fts_statp->st_gid, plan->g_data); 970 } 971 972 PLAN * 973 c_group(OPTION *option, char ***argvp) 974 { 975 char *gname; 976 PLAN *new; 977 struct group *g; 978 gid_t gid; 979 980 gname = nextarg(option, argvp); 981 ftsoptions &= ~FTS_NOSTAT; 982 983 new = palloc(option); 984 g = getgrnam(gname); 985 if (g == NULL) { 986 char* cp = gname; 987 if (gname[0] == '-' || gname[0] == '+') 988 gname++; 989 gid = atoi(gname); 990 if (gid == 0 && gname[0] != '0') 991 errx(1, "%s: %s: no such group", option->name, gname); 992 gid = find_parsenum(new, option->name, cp, NULL); 993 } else 994 gid = g->gr_gid; 995 996 new->g_data = gid; 997 return new; 998 } 999 1000 /* 1001 * -ignore_readdir_race functions -- 1002 * 1003 * Always true. Ignore errors which occur if a file or a directory 1004 * in a starting point gets deleted between reading the name and calling 1005 * stat on it while find is traversing the starting point. 1006 */ 1007 1008 PLAN * 1009 c_ignore_readdir_race(OPTION *option, char ***argvp __unused) 1010 { 1011 if (strcmp(option->name, "-ignore_readdir_race") == 0) 1012 ignore_readdir_race = 1; 1013 else 1014 ignore_readdir_race = 0; 1015 1016 return palloc(option); 1017 } 1018 1019 /* 1020 * -inum n functions -- 1021 * 1022 * True if the file has inode # n. 1023 */ 1024 int 1025 f_inum(PLAN *plan, FTSENT *entry) 1026 { 1027 COMPARE(entry->fts_statp->st_ino, plan->i_data); 1028 } 1029 1030 PLAN * 1031 c_inum(OPTION *option, char ***argvp) 1032 { 1033 char *inum_str; 1034 PLAN *new; 1035 1036 inum_str = nextarg(option, argvp); 1037 ftsoptions &= ~FTS_NOSTAT; 1038 1039 new = palloc(option); 1040 new->i_data = find_parsenum(new, option->name, inum_str, NULL); 1041 return new; 1042 } 1043 1044 /* 1045 * -samefile FN 1046 * 1047 * True if the file has the same inode (eg hard link) FN 1048 */ 1049 1050 /* f_samefile is just f_inum */ 1051 PLAN * 1052 c_samefile(OPTION *option, char ***argvp) 1053 { 1054 char *fn; 1055 PLAN *new; 1056 struct stat sb; 1057 1058 fn = nextarg(option, argvp); 1059 ftsoptions &= ~FTS_NOSTAT; 1060 1061 new = palloc(option); 1062 if (stat(fn, &sb)) 1063 err(1, "%s", fn); 1064 new->i_data = sb.st_ino; 1065 return new; 1066 } 1067 1068 /* 1069 * -links n functions -- 1070 * 1071 * True if the file has n links. 1072 */ 1073 int 1074 f_links(PLAN *plan, FTSENT *entry) 1075 { 1076 COMPARE(entry->fts_statp->st_nlink, plan->l_data); 1077 } 1078 1079 PLAN * 1080 c_links(OPTION *option, char ***argvp) 1081 { 1082 char *nlinks; 1083 PLAN *new; 1084 1085 nlinks = nextarg(option, argvp); 1086 ftsoptions &= ~FTS_NOSTAT; 1087 1088 new = palloc(option); 1089 new->l_data = (nlink_t)find_parsenum(new, option->name, nlinks, NULL); 1090 return new; 1091 } 1092 1093 /* 1094 * -ls functions -- 1095 * 1096 * Always true - prints the current entry to stdout in "ls" format. 1097 */ 1098 int 1099 f_ls(PLAN *plan __unused, FTSENT *entry) 1100 { 1101 printlong(entry->fts_path, entry->fts_accpath, entry->fts_statp); 1102 return 1; 1103 } 1104 1105 PLAN * 1106 c_ls(OPTION *option, char ***argvp __unused) 1107 { 1108 ftsoptions &= ~FTS_NOSTAT; 1109 isoutput = 1; 1110 1111 return palloc(option); 1112 } 1113 1114 /* 1115 * -name functions -- 1116 * 1117 * True if the basename of the filename being examined 1118 * matches pattern using Pattern Matching Notation S3.14 1119 */ 1120 int 1121 f_name(PLAN *plan, FTSENT *entry) 1122 { 1123 char fn[PATH_MAX]; 1124 const char *name; 1125 ssize_t len; 1126 1127 if (plan->flags & F_LINK) { 1128 /* 1129 * The below test both avoids obviously useless readlink() 1130 * calls and ensures that symlinks with existent target do 1131 * not match if symlinks are being followed. 1132 * Assumption: fts will stat all symlinks that are to be 1133 * followed and will return the stat information. 1134 */ 1135 if (entry->fts_info != FTS_NSOK && entry->fts_info != FTS_SL && 1136 entry->fts_info != FTS_SLNONE) 1137 return 0; 1138 len = readlink(entry->fts_accpath, fn, sizeof(fn) - 1); 1139 if (len == -1) 1140 return 0; 1141 fn[len] = '\0'; 1142 name = fn; 1143 } else 1144 name = entry->fts_name; 1145 return !fnmatch(plan->c_data, name, 1146 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 1147 } 1148 1149 PLAN * 1150 c_name(OPTION *option, char ***argvp) 1151 { 1152 char *pattern; 1153 PLAN *new; 1154 1155 pattern = nextarg(option, argvp); 1156 new = palloc(option); 1157 new->c_data = pattern; 1158 return new; 1159 } 1160 1161 /* 1162 * -newer file functions -- 1163 * 1164 * True if the current file has been modified more recently 1165 * then the modification time of the file named by the pathname 1166 * file. 1167 */ 1168 int 1169 f_newer(PLAN *plan, FTSENT *entry) 1170 { 1171 struct timespec ft; 1172 1173 if (plan->flags & F_TIME_C) 1174 ft = entry->fts_statp->st_ctim; 1175 else if (plan->flags & F_TIME_A) 1176 ft = entry->fts_statp->st_atim; 1177 else if (plan->flags & F_TIME_B) 1178 ft = entry->fts_statp->st_birthtim; 1179 else 1180 ft = entry->fts_statp->st_mtim; 1181 return (ft.tv_sec > plan->t_data.tv_sec || 1182 (ft.tv_sec == plan->t_data.tv_sec && 1183 ft.tv_nsec > plan->t_data.tv_nsec)); 1184 } 1185 1186 PLAN * 1187 c_newer(OPTION *option, char ***argvp) 1188 { 1189 char *fn_or_tspec; 1190 PLAN *new; 1191 struct stat sb; 1192 1193 fn_or_tspec = nextarg(option, argvp); 1194 ftsoptions &= ~FTS_NOSTAT; 1195 1196 new = palloc(option); 1197 /* compare against what */ 1198 if (option->flags & F_TIME2_T) { 1199 new->t_data.tv_sec = get_date(fn_or_tspec); 1200 if (new->t_data.tv_sec == (time_t) -1) 1201 errx(1, "Can't parse date/time: %s", fn_or_tspec); 1202 /* Use the seconds only in the comparison. */ 1203 new->t_data.tv_nsec = 999999999; 1204 } else { 1205 if (stat(fn_or_tspec, &sb)) 1206 err(1, "%s", fn_or_tspec); 1207 if (option->flags & F_TIME2_C) 1208 new->t_data = sb.st_ctim; 1209 else if (option->flags & F_TIME2_A) 1210 new->t_data = sb.st_atim; 1211 else if (option->flags & F_TIME2_B) 1212 new->t_data = sb.st_birthtim; 1213 else 1214 new->t_data = sb.st_mtim; 1215 } 1216 return new; 1217 } 1218 1219 /* 1220 * -nogroup functions -- 1221 * 1222 * True if file belongs to a user ID for which the equivalent 1223 * of the getgrnam() 9.2.1 [POSIX.1] function returns NULL. 1224 */ 1225 int 1226 f_nogroup(PLAN *plan __unused, FTSENT *entry) 1227 { 1228 return group_from_gid(entry->fts_statp->st_gid, 1) == NULL; 1229 } 1230 1231 PLAN * 1232 c_nogroup(OPTION *option, char ***argvp __unused) 1233 { 1234 ftsoptions &= ~FTS_NOSTAT; 1235 1236 return palloc(option); 1237 } 1238 1239 /* 1240 * -nouser functions -- 1241 * 1242 * True if file belongs to a user ID for which the equivalent 1243 * of the getpwuid() 9.2.2 [POSIX.1] function returns NULL. 1244 */ 1245 int 1246 f_nouser(PLAN *plan __unused, FTSENT *entry) 1247 { 1248 return user_from_uid(entry->fts_statp->st_uid, 1) == NULL; 1249 } 1250 1251 PLAN * 1252 c_nouser(OPTION *option, char ***argvp __unused) 1253 { 1254 ftsoptions &= ~FTS_NOSTAT; 1255 1256 return palloc(option); 1257 } 1258 1259 /* 1260 * -path functions -- 1261 * 1262 * True if the path of the filename being examined 1263 * matches pattern using Pattern Matching Notation S3.14 1264 */ 1265 int 1266 f_path(PLAN *plan, FTSENT *entry) 1267 { 1268 return !fnmatch(plan->c_data, entry->fts_path, 1269 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 1270 } 1271 1272 /* c_path is the same as c_name */ 1273 1274 /* 1275 * -perm functions -- 1276 * 1277 * The mode argument is used to represent file mode bits. If it starts 1278 * with a leading digit, it's treated as an octal mode, otherwise as a 1279 * symbolic mode. 1280 */ 1281 int 1282 f_perm(PLAN *plan, FTSENT *entry) 1283 { 1284 mode_t mode; 1285 1286 mode = entry->fts_statp->st_mode & 1287 (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO); 1288 if (plan->flags & F_ATLEAST) 1289 return (plan->m_data | mode) == mode; 1290 else if (plan->flags & F_ANY) 1291 return (mode & plan->m_data); 1292 else 1293 return mode == plan->m_data; 1294 /* NOTREACHED */ 1295 } 1296 1297 PLAN * 1298 c_perm(OPTION *option, char ***argvp) 1299 { 1300 char *perm; 1301 PLAN *new; 1302 mode_t *set; 1303 1304 perm = nextarg(option, argvp); 1305 ftsoptions &= ~FTS_NOSTAT; 1306 1307 new = palloc(option); 1308 1309 if (*perm == '-') { 1310 new->flags |= F_ATLEAST; 1311 ++perm; 1312 } else if (*perm == '+') { 1313 new->flags |= F_ANY; 1314 ++perm; 1315 } 1316 1317 if ((set = setmode(perm)) == NULL) 1318 errx(1, "%s: %s: illegal mode string", option->name, perm); 1319 1320 new->m_data = getmode(set, 0); 1321 free(set); 1322 return new; 1323 } 1324 1325 /* 1326 * -print functions -- 1327 * 1328 * Always true, causes the current pathname to be written to 1329 * standard output. 1330 */ 1331 int 1332 f_print(PLAN *plan __unused, FTSENT *entry) 1333 { 1334 (void)puts(entry->fts_path); 1335 return 1; 1336 } 1337 1338 PLAN * 1339 c_print(OPTION *option, char ***argvp __unused) 1340 { 1341 isoutput = 1; 1342 1343 return palloc(option); 1344 } 1345 1346 /* 1347 * -print0 functions -- 1348 * 1349 * Always true, causes the current pathname to be written to 1350 * standard output followed by a NUL character 1351 */ 1352 int 1353 f_print0(PLAN *plan __unused, FTSENT *entry) 1354 { 1355 fputs(entry->fts_path, stdout); 1356 fputc('\0', stdout); 1357 return 1; 1358 } 1359 1360 /* c_print0 is the same as c_print */ 1361 1362 /* 1363 * -prune functions -- 1364 * 1365 * Prune a portion of the hierarchy. 1366 */ 1367 int 1368 f_prune(PLAN *plan __unused, FTSENT *entry) 1369 { 1370 if (fts_set(tree, entry, FTS_SKIP)) 1371 err(1, "%s", entry->fts_path); 1372 return 1; 1373 } 1374 1375 /* c_prune == c_simple */ 1376 1377 /* 1378 * -regex functions -- 1379 * 1380 * True if the whole path of the file matches pattern using 1381 * regular expression. 1382 */ 1383 int 1384 f_regex(PLAN *plan, FTSENT *entry) 1385 { 1386 char *str; 1387 int len; 1388 regex_t *pre; 1389 regmatch_t pmatch; 1390 int errcode; 1391 char errbuf[LINE_MAX]; 1392 int matched; 1393 1394 pre = plan->re_data; 1395 str = entry->fts_path; 1396 len = strlen(str); 1397 matched = 0; 1398 1399 pmatch.rm_so = 0; 1400 pmatch.rm_eo = len; 1401 1402 errcode = regexec(pre, str, 1, &pmatch, REG_STARTEND); 1403 1404 if (errcode != 0 && errcode != REG_NOMATCH) { 1405 regerror(errcode, pre, errbuf, sizeof errbuf); 1406 errx(1, "%s: %s", 1407 plan->flags & F_IGNCASE ? "-iregex" : "-regex", errbuf); 1408 } 1409 1410 if (errcode == 0 && pmatch.rm_so == 0 && pmatch.rm_eo == len) 1411 matched = 1; 1412 1413 return matched; 1414 } 1415 1416 PLAN * 1417 c_regex(OPTION *option, char ***argvp) 1418 { 1419 PLAN *new; 1420 char *pattern; 1421 regex_t *pre; 1422 int errcode; 1423 char errbuf[LINE_MAX]; 1424 1425 if ((pre = malloc(sizeof(regex_t))) == NULL) 1426 err(1, NULL); 1427 1428 pattern = nextarg(option, argvp); 1429 1430 if ((errcode = regcomp(pre, pattern, 1431 regexp_flags | (option->flags & F_IGNCASE ? REG_ICASE : 0))) != 0) { 1432 regerror(errcode, pre, errbuf, sizeof errbuf); 1433 errx(1, "%s: %s: %s", 1434 option->flags & F_IGNCASE ? "-iregex" : "-regex", 1435 pattern, errbuf); 1436 } 1437 1438 new = palloc(option); 1439 new->re_data = pre; 1440 1441 return new; 1442 } 1443 1444 /* c_simple covers c_prune, c_openparen, c_closeparen, c_not, c_or, c_true, c_false */ 1445 1446 PLAN * 1447 c_simple(OPTION *option, char ***argvp __unused) 1448 { 1449 return palloc(option); 1450 } 1451 1452 /* 1453 * -size n[c] functions -- 1454 * 1455 * True if the file size in bytes, divided by an implementation defined 1456 * value and rounded up to the next integer, is n. If n is followed by 1457 * one of c k M G T P, the size is in bytes, kilobytes, 1458 * megabytes, gigabytes, terabytes or petabytes respectively. 1459 */ 1460 #define FIND_SIZE 512 1461 static int divsize = 1; 1462 1463 int 1464 f_size(PLAN *plan, FTSENT *entry) 1465 { 1466 off_t size; 1467 1468 size = divsize ? (entry->fts_statp->st_size + FIND_SIZE - 1) / 1469 FIND_SIZE : entry->fts_statp->st_size; 1470 COMPARE(size, plan->o_data); 1471 } 1472 1473 PLAN * 1474 c_size(OPTION *option, char ***argvp) 1475 { 1476 char *size_str; 1477 PLAN *new; 1478 char endch; 1479 off_t scale; 1480 1481 size_str = nextarg(option, argvp); 1482 ftsoptions &= ~FTS_NOSTAT; 1483 1484 new = palloc(option); 1485 endch = 'c'; 1486 new->o_data = find_parsenum(new, option->name, size_str, &endch); 1487 if (endch != '\0') { 1488 divsize = 0; 1489 1490 switch (endch) { 1491 case 'c': /* characters */ 1492 scale = 0x1LL; 1493 break; 1494 case 'k': /* kilobytes 1<<10 */ 1495 scale = 0x400LL; 1496 break; 1497 case 'M': /* megabytes 1<<20 */ 1498 scale = 0x100000LL; 1499 break; 1500 case 'G': /* gigabytes 1<<30 */ 1501 scale = 0x40000000LL; 1502 break; 1503 case 'T': /* terabytes 1<<40 */ 1504 scale = 0x1000000000LL; 1505 break; 1506 case 'P': /* petabytes 1<<50 */ 1507 scale = 0x4000000000000LL; 1508 break; 1509 default: 1510 errx(1, "%s: %s: illegal trailing character", 1511 option->name, size_str); 1512 break; 1513 } 1514 if (new->o_data > QUAD_MAX / scale) 1515 errx(1, "%s: %s: value too large", 1516 option->name, size_str); 1517 new->o_data *= scale; 1518 } 1519 return new; 1520 } 1521 1522 /* 1523 * -sparse functions -- 1524 * 1525 * Check if a file is sparse by finding if it occupies fewer blocks 1526 * than we expect based on its size. 1527 */ 1528 int 1529 f_sparse(PLAN *plan __unused, FTSENT *entry) 1530 { 1531 off_t expected_blocks; 1532 1533 expected_blocks = (entry->fts_statp->st_size + 511) / 512; 1534 return entry->fts_statp->st_blocks < expected_blocks; 1535 } 1536 1537 PLAN * 1538 c_sparse(OPTION *option, char ***argvp __unused) 1539 { 1540 ftsoptions &= ~FTS_NOSTAT; 1541 1542 return palloc(option); 1543 } 1544 1545 /* 1546 * -type c functions -- 1547 * 1548 * True if the type of the file is c, where c is b, c, d, p, f or w 1549 * for block special file, character special file, directory, FIFO, 1550 * regular file or whiteout respectively. 1551 */ 1552 int 1553 f_type(PLAN *plan, FTSENT *entry) 1554 { 1555 if (plan->m_data == S_IFDIR) 1556 return (entry->fts_info == FTS_D || entry->fts_info == FTS_DC || 1557 entry->fts_info == FTS_DNR || entry->fts_info == FTS_DOT || 1558 entry->fts_info == FTS_DP); 1559 else 1560 return (entry->fts_statp->st_mode & S_IFMT) == plan->m_data; 1561 } 1562 1563 PLAN * 1564 c_type(OPTION *option, char ***argvp) 1565 { 1566 char *typestring; 1567 PLAN *new; 1568 mode_t mask; 1569 1570 typestring = nextarg(option, argvp); 1571 if (typestring[0] != 'd') 1572 ftsoptions &= ~FTS_NOSTAT; 1573 1574 switch (typestring[0]) { 1575 case 'b': 1576 mask = S_IFBLK; 1577 break; 1578 case 'c': 1579 mask = S_IFCHR; 1580 break; 1581 case 'd': 1582 mask = S_IFDIR; 1583 break; 1584 case 'f': 1585 mask = S_IFREG; 1586 break; 1587 case 'l': 1588 mask = S_IFLNK; 1589 break; 1590 case 'p': 1591 mask = S_IFIFO; 1592 break; 1593 case 's': 1594 mask = S_IFSOCK; 1595 break; 1596 #ifdef FTS_WHITEOUT 1597 case 'w': 1598 mask = S_IFWHT; 1599 ftsoptions |= FTS_WHITEOUT; 1600 break; 1601 #endif /* FTS_WHITEOUT */ 1602 default: 1603 errx(1, "%s: %s: unknown type", option->name, typestring); 1604 } 1605 1606 new = palloc(option); 1607 new->m_data = mask; 1608 return new; 1609 } 1610 1611 /* 1612 * -user uname functions -- 1613 * 1614 * True if the file belongs to the user uname. If uname is numeric and 1615 * an equivalent of the getpwnam() S9.2.2 [POSIX.1] function does not 1616 * return a valid user name, uname is taken as a user ID. 1617 */ 1618 int 1619 f_user(PLAN *plan, FTSENT *entry) 1620 { 1621 COMPARE(entry->fts_statp->st_uid, plan->u_data); 1622 } 1623 1624 PLAN * 1625 c_user(OPTION *option, char ***argvp) 1626 { 1627 char *username; 1628 PLAN *new; 1629 struct passwd *p; 1630 uid_t uid; 1631 1632 username = nextarg(option, argvp); 1633 ftsoptions &= ~FTS_NOSTAT; 1634 1635 new = palloc(option); 1636 p = getpwnam(username); 1637 if (p == NULL) { 1638 char* cp = username; 1639 if( username[0] == '-' || username[0] == '+' ) 1640 username++; 1641 uid = atoi(username); 1642 if (uid == 0 && username[0] != '0') 1643 errx(1, "%s: %s: no such user", option->name, username); 1644 uid = find_parsenum(new, option->name, cp, NULL); 1645 } else 1646 uid = p->pw_uid; 1647 1648 new->u_data = uid; 1649 return new; 1650 } 1651 1652 /* 1653 * -xdev functions -- 1654 * 1655 * Always true, causes find not to descend past directories that have a 1656 * different device ID (st_dev, see stat() S5.6.2 [POSIX.1]) 1657 */ 1658 PLAN * 1659 c_xdev(OPTION *option, char ***argvp __unused) 1660 { 1661 ftsoptions |= FTS_XDEV; 1662 1663 return palloc(option); 1664 } 1665 1666 /* 1667 * ( expression ) functions -- 1668 * 1669 * True if expression is true. 1670 */ 1671 int 1672 f_expr(PLAN *plan, FTSENT *entry) 1673 { 1674 PLAN *p; 1675 int state = 0; 1676 1677 for (p = plan->p_data[0]; 1678 p && (state = (p->execute)(p, entry)); p = p->next); 1679 return state; 1680 } 1681 1682 /* 1683 * f_openparen and f_closeparen nodes are temporary place markers. They are 1684 * eliminated during phase 2 of find_formplan() --- the '(' node is converted 1685 * to a f_expr node containing the expression and the ')' node is discarded. 1686 * The functions themselves are only used as constants. 1687 */ 1688 1689 int 1690 f_openparen(PLAN *plan __unused, FTSENT *entry __unused) 1691 { 1692 abort(); 1693 } 1694 1695 int 1696 f_closeparen(PLAN *plan __unused, FTSENT *entry __unused) 1697 { 1698 abort(); 1699 } 1700 1701 /* c_openparen == c_simple */ 1702 /* c_closeparen == c_simple */ 1703 1704 /* 1705 * AND operator. Since AND is implicit, no node is allocated. 1706 */ 1707 PLAN * 1708 c_and(OPTION *option __unused, char ***argvp __unused) 1709 { 1710 return NULL; 1711 } 1712 1713 /* 1714 * ! expression functions -- 1715 * 1716 * Negation of a primary; the unary NOT operator. 1717 */ 1718 int 1719 f_not(PLAN *plan, FTSENT *entry) 1720 { 1721 PLAN *p; 1722 int state = 0; 1723 1724 for (p = plan->p_data[0]; 1725 p && (state = (p->execute)(p, entry)); p = p->next); 1726 return !state; 1727 } 1728 1729 /* c_not == c_simple */ 1730 1731 /* 1732 * expression -o expression functions -- 1733 * 1734 * Alternation of primaries; the OR operator. The second expression is 1735 * not evaluated if the first expression is true. 1736 */ 1737 int 1738 f_or(PLAN *plan, FTSENT *entry) 1739 { 1740 PLAN *p; 1741 int state = 0; 1742 1743 for (p = plan->p_data[0]; 1744 p && (state = (p->execute)(p, entry)); p = p->next); 1745 1746 if (state) 1747 return 1; 1748 1749 for (p = plan->p_data[1]; 1750 p && (state = (p->execute)(p, entry)); p = p->next); 1751 return state; 1752 } 1753 1754 /* c_or == c_simple */ 1755 1756 /* 1757 * -false 1758 * 1759 * Always false. 1760 */ 1761 int 1762 f_false(PLAN *plan __unused, FTSENT *entry __unused) 1763 { 1764 return 0; 1765 } 1766 1767 /* c_false == c_simple */ 1768 1769 /* 1770 * -quit 1771 * 1772 * Exits the program 1773 */ 1774 int 1775 f_quit(PLAN *plan __unused, FTSENT *entry __unused) 1776 { 1777 exit(0); 1778 } 1779 1780 /* c_quit == c_simple */ 1781