function.c revision 326763
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 35static 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: stable/10/usr.bin/find/function.c 326763 2017-12-11 05:21:48Z delphij $"); 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 67static PLAN *palloc(OPTION *); 68static long long find_parsenum(PLAN *, const char *, char *, char *); 69static long long find_parsetime(PLAN *, const char *, char *); 70static char *nextarg(OPTION *, char ***); 71 72extern char **environ; 73 74static 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 89static PLAN * 90palloc(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 */ 106static long long 107find_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 */ 147static long long 148find_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 */ 222static char * 223nextarg(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 */ 253int 254f_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 271PLAN * 272c_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 298int 299f_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 318PLAN * 319c_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 */ 344PLAN * 345c_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 */ 368int 369f_acl(PLAN *plan __unused, FTSENT *entry) 370{ 371 acl_t facl; 372 acl_type_t acl_type; 373 int acl_supported = 0, ret, trivial; 374 375 if (S_ISLNK(entry->fts_statp->st_mode)) 376 return 0; 377 ret = pathconf(entry->fts_accpath, _PC_ACL_NFS4); 378 if (ret > 0) { 379 acl_supported = 1; 380 acl_type = ACL_TYPE_NFS4; 381 } else if (ret < 0 && errno != EINVAL) { 382 warn("%s", entry->fts_accpath); 383 return (0); 384 } 385 if (acl_supported == 0) { 386 ret = pathconf(entry->fts_accpath, _PC_ACL_EXTENDED); 387 if (ret > 0) { 388 acl_supported = 1; 389 acl_type = ACL_TYPE_ACCESS; 390 } else if (ret < 0 && errno != EINVAL) { 391 warn("%s", entry->fts_accpath); 392 return (0); 393 } 394 } 395 if (acl_supported == 0) 396 return (0); 397 398 facl = acl_get_file(entry->fts_accpath, acl_type); 399 if (facl == NULL) { 400 warn("%s", entry->fts_accpath); 401 return (0); 402 } 403 ret = acl_is_trivial_np(facl, &trivial); 404 acl_free(facl); 405 if (ret) { 406 warn("%s", entry->fts_accpath); 407 return (0); 408 } 409 if (trivial) 410 return (0); 411 return (1); 412} 413 414PLAN * 415c_acl(OPTION *option, char ***argvp __unused) 416{ 417 ftsoptions &= ~FTS_NOSTAT; 418 return (palloc(option)); 419} 420 421/* 422 * -delete functions -- 423 * 424 * True always. Makes its best shot and continues on regardless. 425 */ 426int 427f_delete(PLAN *plan __unused, FTSENT *entry) 428{ 429 /* ignore these from fts */ 430 if (strcmp(entry->fts_accpath, ".") == 0 || 431 strcmp(entry->fts_accpath, "..") == 0) 432 return 1; 433 434 /* sanity check */ 435 if (isdepth == 0 || /* depth off */ 436 (ftsoptions & FTS_NOSTAT)) /* not stat()ing */ 437 errx(1, "-delete: insecure options got turned on"); 438 439 if (!(ftsoptions & FTS_PHYSICAL) || /* physical off */ 440 (ftsoptions & FTS_LOGICAL)) /* or finally, logical on */ 441 errx(1, "-delete: forbidden when symlinks are followed"); 442 443 /* Potentially unsafe - do not accept relative paths whatsoever */ 444 if (entry->fts_level > FTS_ROOTLEVEL && 445 strchr(entry->fts_accpath, '/') != NULL) 446 errx(1, "-delete: %s: relative path potentially not safe", 447 entry->fts_accpath); 448 449 /* Turn off user immutable bits if running as root */ 450 if ((entry->fts_statp->st_flags & (UF_APPEND|UF_IMMUTABLE)) && 451 !(entry->fts_statp->st_flags & (SF_APPEND|SF_IMMUTABLE)) && 452 geteuid() == 0) 453 lchflags(entry->fts_accpath, 454 entry->fts_statp->st_flags &= ~(UF_APPEND|UF_IMMUTABLE)); 455 456 /* rmdir directories, unlink everything else */ 457 if (S_ISDIR(entry->fts_statp->st_mode)) { 458 if (rmdir(entry->fts_accpath) < 0 && errno != ENOTEMPTY) 459 warn("-delete: rmdir(%s)", entry->fts_path); 460 } else { 461 if (unlink(entry->fts_accpath) < 0) 462 warn("-delete: unlink(%s)", entry->fts_path); 463 } 464 465 /* "succeed" */ 466 return 1; 467} 468 469PLAN * 470c_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 */ 494int 495f_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 */ 508int 509f_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 517PLAN * 518c_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 */ 554int 555f_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 582PLAN * 583c_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 */ 605int 606f_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 644doexec: 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 */ 683PLAN * 684c_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 784done: *argvp = argv + 1; 785 return new; 786} 787 788/* Finish any pending -exec ... {} + functions. */ 789void 790finish_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 801int 802f_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 818PLAN * 819c_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 */ 851PLAN * 852c_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 */ 865int 866f_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 if (!ignore_readdir_race || errno != ENOENT) { 901 warn("statfs: %s", entry->fts_accpath); 902 exitstatus = 1; 903 } 904 return 0; 905 } 906 907 if (p) { 908 p[0] = save[0]; 909 p[1] = save[1]; 910 } 911 912 first = 0; 913 914 /* 915 * Further tests may need both of these values, so 916 * always copy both of them. 917 */ 918 val_flags = sb.f_flags; 919 strlcpy(fstype, sb.f_fstypename, sizeof(fstype)); 920 } 921 switch (plan->flags & F_MTMASK) { 922 case F_MTFLAG: 923 return val_flags & plan->mt_data; 924 case F_MTTYPE: 925 return (strncmp(fstype, plan->c_data, sizeof(fstype)) == 0); 926 default: 927 abort(); 928 } 929} 930 931PLAN * 932c_fstype(OPTION *option, char ***argvp) 933{ 934 char *fsname; 935 PLAN *new; 936 937 fsname = nextarg(option, argvp); 938 ftsoptions &= ~FTS_NOSTAT; 939 940 new = palloc(option); 941 switch (*fsname) { 942 case 'l': 943 if (!strcmp(fsname, "local")) { 944 new->flags |= F_MTFLAG; 945 new->mt_data = MNT_LOCAL; 946 return new; 947 } 948 break; 949 case 'r': 950 if (!strcmp(fsname, "rdonly")) { 951 new->flags |= F_MTFLAG; 952 new->mt_data = MNT_RDONLY; 953 return new; 954 } 955 break; 956 } 957 958 new->flags |= F_MTTYPE; 959 new->c_data = fsname; 960 return new; 961} 962 963/* 964 * -group gname functions -- 965 * 966 * True if the file belongs to the group gname. If gname is numeric and 967 * an equivalent of the getgrnam() function does not return a valid group 968 * name, gname is taken as a group ID. 969 */ 970int 971f_group(PLAN *plan, FTSENT *entry) 972{ 973 COMPARE(entry->fts_statp->st_gid, plan->g_data); 974} 975 976PLAN * 977c_group(OPTION *option, char ***argvp) 978{ 979 char *gname; 980 PLAN *new; 981 struct group *g; 982 gid_t gid; 983 984 gname = nextarg(option, argvp); 985 ftsoptions &= ~FTS_NOSTAT; 986 987 new = palloc(option); 988 g = getgrnam(gname); 989 if (g == NULL) { 990 char* cp = gname; 991 if (gname[0] == '-' || gname[0] == '+') 992 gname++; 993 gid = atoi(gname); 994 if (gid == 0 && gname[0] != '0') 995 errx(1, "%s: %s: no such group", option->name, gname); 996 gid = find_parsenum(new, option->name, cp, NULL); 997 } else 998 gid = g->gr_gid; 999 1000 new->g_data = gid; 1001 return new; 1002} 1003 1004/* 1005 * -ignore_readdir_race functions -- 1006 * 1007 * Always true. Ignore errors which occur if a file or a directory 1008 * in a starting point gets deleted between reading the name and calling 1009 * stat on it while find is traversing the starting point. 1010 */ 1011 1012PLAN * 1013c_ignore_readdir_race(OPTION *option, char ***argvp __unused) 1014{ 1015 if (strcmp(option->name, "-ignore_readdir_race") == 0) 1016 ignore_readdir_race = 1; 1017 else 1018 ignore_readdir_race = 0; 1019 1020 return palloc(option); 1021} 1022 1023/* 1024 * -inum n functions -- 1025 * 1026 * True if the file has inode # n. 1027 */ 1028int 1029f_inum(PLAN *plan, FTSENT *entry) 1030{ 1031 COMPARE(entry->fts_statp->st_ino, plan->i_data); 1032} 1033 1034PLAN * 1035c_inum(OPTION *option, char ***argvp) 1036{ 1037 char *inum_str; 1038 PLAN *new; 1039 1040 inum_str = nextarg(option, argvp); 1041 ftsoptions &= ~FTS_NOSTAT; 1042 1043 new = palloc(option); 1044 new->i_data = find_parsenum(new, option->name, inum_str, NULL); 1045 return new; 1046} 1047 1048/* 1049 * -samefile FN 1050 * 1051 * True if the file has the same inode (eg hard link) FN 1052 */ 1053 1054/* f_samefile is just f_inum */ 1055PLAN * 1056c_samefile(OPTION *option, char ***argvp) 1057{ 1058 char *fn; 1059 PLAN *new; 1060 struct stat sb; 1061 1062 fn = nextarg(option, argvp); 1063 ftsoptions &= ~FTS_NOSTAT; 1064 1065 new = palloc(option); 1066 if (stat(fn, &sb)) 1067 err(1, "%s", fn); 1068 new->i_data = sb.st_ino; 1069 return new; 1070} 1071 1072/* 1073 * -links n functions -- 1074 * 1075 * True if the file has n links. 1076 */ 1077int 1078f_links(PLAN *plan, FTSENT *entry) 1079{ 1080 COMPARE(entry->fts_statp->st_nlink, plan->l_data); 1081} 1082 1083PLAN * 1084c_links(OPTION *option, char ***argvp) 1085{ 1086 char *nlinks; 1087 PLAN *new; 1088 1089 nlinks = nextarg(option, argvp); 1090 ftsoptions &= ~FTS_NOSTAT; 1091 1092 new = palloc(option); 1093 new->l_data = (nlink_t)find_parsenum(new, option->name, nlinks, NULL); 1094 return new; 1095} 1096 1097/* 1098 * -ls functions -- 1099 * 1100 * Always true - prints the current entry to stdout in "ls" format. 1101 */ 1102int 1103f_ls(PLAN *plan __unused, FTSENT *entry) 1104{ 1105 printlong(entry->fts_path, entry->fts_accpath, entry->fts_statp); 1106 return 1; 1107} 1108 1109PLAN * 1110c_ls(OPTION *option, char ***argvp __unused) 1111{ 1112 ftsoptions &= ~FTS_NOSTAT; 1113 isoutput = 1; 1114 1115 return palloc(option); 1116} 1117 1118/* 1119 * -name functions -- 1120 * 1121 * True if the basename of the filename being examined 1122 * matches pattern using Pattern Matching Notation S3.14 1123 */ 1124int 1125f_name(PLAN *plan, FTSENT *entry) 1126{ 1127 char fn[PATH_MAX]; 1128 const char *name; 1129 ssize_t len; 1130 1131 if (plan->flags & F_LINK) { 1132 /* 1133 * The below test both avoids obviously useless readlink() 1134 * calls and ensures that symlinks with existent target do 1135 * not match if symlinks are being followed. 1136 * Assumption: fts will stat all symlinks that are to be 1137 * followed and will return the stat information. 1138 */ 1139 if (entry->fts_info != FTS_NSOK && entry->fts_info != FTS_SL && 1140 entry->fts_info != FTS_SLNONE) 1141 return 0; 1142 len = readlink(entry->fts_accpath, fn, sizeof(fn) - 1); 1143 if (len == -1) 1144 return 0; 1145 fn[len] = '\0'; 1146 name = fn; 1147 } else 1148 name = entry->fts_name; 1149 return !fnmatch(plan->c_data, name, 1150 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 1151} 1152 1153PLAN * 1154c_name(OPTION *option, char ***argvp) 1155{ 1156 char *pattern; 1157 PLAN *new; 1158 1159 pattern = nextarg(option, argvp); 1160 new = palloc(option); 1161 new->c_data = pattern; 1162 return new; 1163} 1164 1165/* 1166 * -newer file functions -- 1167 * 1168 * True if the current file has been modified more recently 1169 * then the modification time of the file named by the pathname 1170 * file. 1171 */ 1172int 1173f_newer(PLAN *plan, FTSENT *entry) 1174{ 1175 struct timespec ft; 1176 1177 if (plan->flags & F_TIME_C) 1178 ft = entry->fts_statp->st_ctim; 1179 else if (plan->flags & F_TIME_A) 1180 ft = entry->fts_statp->st_atim; 1181 else if (plan->flags & F_TIME_B) 1182 ft = entry->fts_statp->st_birthtim; 1183 else 1184 ft = entry->fts_statp->st_mtim; 1185 return (ft.tv_sec > plan->t_data.tv_sec || 1186 (ft.tv_sec == plan->t_data.tv_sec && 1187 ft.tv_nsec > plan->t_data.tv_nsec)); 1188} 1189 1190PLAN * 1191c_newer(OPTION *option, char ***argvp) 1192{ 1193 char *fn_or_tspec; 1194 PLAN *new; 1195 struct stat sb; 1196 1197 fn_or_tspec = nextarg(option, argvp); 1198 ftsoptions &= ~FTS_NOSTAT; 1199 1200 new = palloc(option); 1201 /* compare against what */ 1202 if (option->flags & F_TIME2_T) { 1203 new->t_data.tv_sec = get_date(fn_or_tspec); 1204 if (new->t_data.tv_sec == (time_t) -1) 1205 errx(1, "Can't parse date/time: %s", fn_or_tspec); 1206 /* Use the seconds only in the comparison. */ 1207 new->t_data.tv_nsec = 999999999; 1208 } else { 1209 if (stat(fn_or_tspec, &sb)) 1210 err(1, "%s", fn_or_tspec); 1211 if (option->flags & F_TIME2_C) 1212 new->t_data = sb.st_ctim; 1213 else if (option->flags & F_TIME2_A) 1214 new->t_data = sb.st_atim; 1215 else if (option->flags & F_TIME2_B) 1216 new->t_data = sb.st_birthtim; 1217 else 1218 new->t_data = sb.st_mtim; 1219 } 1220 return new; 1221} 1222 1223/* 1224 * -nogroup functions -- 1225 * 1226 * True if file belongs to a user ID for which the equivalent 1227 * of the getgrnam() 9.2.1 [POSIX.1] function returns NULL. 1228 */ 1229int 1230f_nogroup(PLAN *plan __unused, FTSENT *entry) 1231{ 1232 return group_from_gid(entry->fts_statp->st_gid, 1) == NULL; 1233} 1234 1235PLAN * 1236c_nogroup(OPTION *option, char ***argvp __unused) 1237{ 1238 ftsoptions &= ~FTS_NOSTAT; 1239 1240 return palloc(option); 1241} 1242 1243/* 1244 * -nouser functions -- 1245 * 1246 * True if file belongs to a user ID for which the equivalent 1247 * of the getpwuid() 9.2.2 [POSIX.1] function returns NULL. 1248 */ 1249int 1250f_nouser(PLAN *plan __unused, FTSENT *entry) 1251{ 1252 return user_from_uid(entry->fts_statp->st_uid, 1) == NULL; 1253} 1254 1255PLAN * 1256c_nouser(OPTION *option, char ***argvp __unused) 1257{ 1258 ftsoptions &= ~FTS_NOSTAT; 1259 1260 return palloc(option); 1261} 1262 1263/* 1264 * -path functions -- 1265 * 1266 * True if the path of the filename being examined 1267 * matches pattern using Pattern Matching Notation S3.14 1268 */ 1269int 1270f_path(PLAN *plan, FTSENT *entry) 1271{ 1272 return !fnmatch(plan->c_data, entry->fts_path, 1273 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 1274} 1275 1276/* c_path is the same as c_name */ 1277 1278/* 1279 * -perm functions -- 1280 * 1281 * The mode argument is used to represent file mode bits. If it starts 1282 * with a leading digit, it's treated as an octal mode, otherwise as a 1283 * symbolic mode. 1284 */ 1285int 1286f_perm(PLAN *plan, FTSENT *entry) 1287{ 1288 mode_t mode; 1289 1290 mode = entry->fts_statp->st_mode & 1291 (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO); 1292 if (plan->flags & F_ATLEAST) 1293 return (plan->m_data | mode) == mode; 1294 else if (plan->flags & F_ANY) 1295 return (mode & plan->m_data); 1296 else 1297 return mode == plan->m_data; 1298 /* NOTREACHED */ 1299} 1300 1301PLAN * 1302c_perm(OPTION *option, char ***argvp) 1303{ 1304 char *perm; 1305 PLAN *new; 1306 mode_t *set; 1307 1308 perm = nextarg(option, argvp); 1309 ftsoptions &= ~FTS_NOSTAT; 1310 1311 new = palloc(option); 1312 1313 if (*perm == '-') { 1314 new->flags |= F_ATLEAST; 1315 ++perm; 1316 } else if (*perm == '+') { 1317 new->flags |= F_ANY; 1318 ++perm; 1319 } 1320 1321 if ((set = setmode(perm)) == NULL) 1322 errx(1, "%s: %s: illegal mode string", option->name, perm); 1323 1324 new->m_data = getmode(set, 0); 1325 free(set); 1326 return new; 1327} 1328 1329/* 1330 * -print functions -- 1331 * 1332 * Always true, causes the current pathname to be written to 1333 * standard output. 1334 */ 1335int 1336f_print(PLAN *plan __unused, FTSENT *entry) 1337{ 1338 (void)puts(entry->fts_path); 1339 return 1; 1340} 1341 1342PLAN * 1343c_print(OPTION *option, char ***argvp __unused) 1344{ 1345 isoutput = 1; 1346 1347 return palloc(option); 1348} 1349 1350/* 1351 * -print0 functions -- 1352 * 1353 * Always true, causes the current pathname to be written to 1354 * standard output followed by a NUL character 1355 */ 1356int 1357f_print0(PLAN *plan __unused, FTSENT *entry) 1358{ 1359 fputs(entry->fts_path, stdout); 1360 fputc('\0', stdout); 1361 return 1; 1362} 1363 1364/* c_print0 is the same as c_print */ 1365 1366/* 1367 * -prune functions -- 1368 * 1369 * Prune a portion of the hierarchy. 1370 */ 1371int 1372f_prune(PLAN *plan __unused, FTSENT *entry) 1373{ 1374 if (fts_set(tree, entry, FTS_SKIP)) 1375 err(1, "%s", entry->fts_path); 1376 return 1; 1377} 1378 1379/* c_prune == c_simple */ 1380 1381/* 1382 * -regex functions -- 1383 * 1384 * True if the whole path of the file matches pattern using 1385 * regular expression. 1386 */ 1387int 1388f_regex(PLAN *plan, FTSENT *entry) 1389{ 1390 char *str; 1391 int len; 1392 regex_t *pre; 1393 regmatch_t pmatch; 1394 int errcode; 1395 char errbuf[LINE_MAX]; 1396 int matched; 1397 1398 pre = plan->re_data; 1399 str = entry->fts_path; 1400 len = strlen(str); 1401 matched = 0; 1402 1403 pmatch.rm_so = 0; 1404 pmatch.rm_eo = len; 1405 1406 errcode = regexec(pre, str, 1, &pmatch, REG_STARTEND); 1407 1408 if (errcode != 0 && errcode != REG_NOMATCH) { 1409 regerror(errcode, pre, errbuf, sizeof errbuf); 1410 errx(1, "%s: %s", 1411 plan->flags & F_IGNCASE ? "-iregex" : "-regex", errbuf); 1412 } 1413 1414 if (errcode == 0 && pmatch.rm_so == 0 && pmatch.rm_eo == len) 1415 matched = 1; 1416 1417 return matched; 1418} 1419 1420PLAN * 1421c_regex(OPTION *option, char ***argvp) 1422{ 1423 PLAN *new; 1424 char *pattern; 1425 regex_t *pre; 1426 int errcode; 1427 char errbuf[LINE_MAX]; 1428 1429 if ((pre = malloc(sizeof(regex_t))) == NULL) 1430 err(1, NULL); 1431 1432 pattern = nextarg(option, argvp); 1433 1434 if ((errcode = regcomp(pre, pattern, 1435 regexp_flags | (option->flags & F_IGNCASE ? REG_ICASE : 0))) != 0) { 1436 regerror(errcode, pre, errbuf, sizeof errbuf); 1437 errx(1, "%s: %s: %s", 1438 option->flags & F_IGNCASE ? "-iregex" : "-regex", 1439 pattern, errbuf); 1440 } 1441 1442 new = palloc(option); 1443 new->re_data = pre; 1444 1445 return new; 1446} 1447 1448/* c_simple covers c_prune, c_openparen, c_closeparen, c_not, c_or, c_true, c_false */ 1449 1450PLAN * 1451c_simple(OPTION *option, char ***argvp __unused) 1452{ 1453 return palloc(option); 1454} 1455 1456/* 1457 * -size n[c] functions -- 1458 * 1459 * True if the file size in bytes, divided by an implementation defined 1460 * value and rounded up to the next integer, is n. If n is followed by 1461 * one of c k M G T P, the size is in bytes, kilobytes, 1462 * megabytes, gigabytes, terabytes or petabytes respectively. 1463 */ 1464#define FIND_SIZE 512 1465static int divsize = 1; 1466 1467int 1468f_size(PLAN *plan, FTSENT *entry) 1469{ 1470 off_t size; 1471 1472 size = divsize ? (entry->fts_statp->st_size + FIND_SIZE - 1) / 1473 FIND_SIZE : entry->fts_statp->st_size; 1474 COMPARE(size, plan->o_data); 1475} 1476 1477PLAN * 1478c_size(OPTION *option, char ***argvp) 1479{ 1480 char *size_str; 1481 PLAN *new; 1482 char endch; 1483 off_t scale; 1484 1485 size_str = nextarg(option, argvp); 1486 ftsoptions &= ~FTS_NOSTAT; 1487 1488 new = palloc(option); 1489 endch = 'c'; 1490 new->o_data = find_parsenum(new, option->name, size_str, &endch); 1491 if (endch != '\0') { 1492 divsize = 0; 1493 1494 switch (endch) { 1495 case 'c': /* characters */ 1496 scale = 0x1LL; 1497 break; 1498 case 'k': /* kilobytes 1<<10 */ 1499 scale = 0x400LL; 1500 break; 1501 case 'M': /* megabytes 1<<20 */ 1502 scale = 0x100000LL; 1503 break; 1504 case 'G': /* gigabytes 1<<30 */ 1505 scale = 0x40000000LL; 1506 break; 1507 case 'T': /* terabytes 1<<40 */ 1508 scale = 0x10000000000LL; 1509 break; 1510 case 'P': /* petabytes 1<<50 */ 1511 scale = 0x4000000000000LL; 1512 break; 1513 default: 1514 errx(1, "%s: %s: illegal trailing character", 1515 option->name, size_str); 1516 break; 1517 } 1518 if (new->o_data > QUAD_MAX / scale) 1519 errx(1, "%s: %s: value too large", 1520 option->name, size_str); 1521 new->o_data *= scale; 1522 } 1523 return new; 1524} 1525 1526/* 1527 * -sparse functions -- 1528 * 1529 * Check if a file is sparse by finding if it occupies fewer blocks 1530 * than we expect based on its size. 1531 */ 1532int 1533f_sparse(PLAN *plan __unused, FTSENT *entry) 1534{ 1535 off_t expected_blocks; 1536 1537 expected_blocks = (entry->fts_statp->st_size + 511) / 512; 1538 return entry->fts_statp->st_blocks < expected_blocks; 1539} 1540 1541PLAN * 1542c_sparse(OPTION *option, char ***argvp __unused) 1543{ 1544 ftsoptions &= ~FTS_NOSTAT; 1545 1546 return palloc(option); 1547} 1548 1549/* 1550 * -type c functions -- 1551 * 1552 * True if the type of the file is c, where c is b, c, d, p, f or w 1553 * for block special file, character special file, directory, FIFO, 1554 * regular file or whiteout respectively. 1555 */ 1556int 1557f_type(PLAN *plan, FTSENT *entry) 1558{ 1559 return (entry->fts_statp->st_mode & S_IFMT) == plan->m_data; 1560} 1561 1562PLAN * 1563c_type(OPTION *option, char ***argvp) 1564{ 1565 char *typestring; 1566 PLAN *new; 1567 mode_t mask; 1568 1569 typestring = nextarg(option, argvp); 1570 ftsoptions &= ~FTS_NOSTAT; 1571 1572 switch (typestring[0]) { 1573 case 'b': 1574 mask = S_IFBLK; 1575 break; 1576 case 'c': 1577 mask = S_IFCHR; 1578 break; 1579 case 'd': 1580 mask = S_IFDIR; 1581 break; 1582 case 'f': 1583 mask = S_IFREG; 1584 break; 1585 case 'l': 1586 mask = S_IFLNK; 1587 break; 1588 case 'p': 1589 mask = S_IFIFO; 1590 break; 1591 case 's': 1592 mask = S_IFSOCK; 1593 break; 1594#ifdef FTS_WHITEOUT 1595 case 'w': 1596 mask = S_IFWHT; 1597 ftsoptions |= FTS_WHITEOUT; 1598 break; 1599#endif /* FTS_WHITEOUT */ 1600 default: 1601 errx(1, "%s: %s: unknown type", option->name, typestring); 1602 } 1603 1604 new = palloc(option); 1605 new->m_data = mask; 1606 return new; 1607} 1608 1609/* 1610 * -user uname functions -- 1611 * 1612 * True if the file belongs to the user uname. If uname is numeric and 1613 * an equivalent of the getpwnam() S9.2.2 [POSIX.1] function does not 1614 * return a valid user name, uname is taken as a user ID. 1615 */ 1616int 1617f_user(PLAN *plan, FTSENT *entry) 1618{ 1619 COMPARE(entry->fts_statp->st_uid, plan->u_data); 1620} 1621 1622PLAN * 1623c_user(OPTION *option, char ***argvp) 1624{ 1625 char *username; 1626 PLAN *new; 1627 struct passwd *p; 1628 uid_t uid; 1629 1630 username = nextarg(option, argvp); 1631 ftsoptions &= ~FTS_NOSTAT; 1632 1633 new = palloc(option); 1634 p = getpwnam(username); 1635 if (p == NULL) { 1636 char* cp = username; 1637 if( username[0] == '-' || username[0] == '+' ) 1638 username++; 1639 uid = atoi(username); 1640 if (uid == 0 && username[0] != '0') 1641 errx(1, "%s: %s: no such user", option->name, username); 1642 uid = find_parsenum(new, option->name, cp, NULL); 1643 } else 1644 uid = p->pw_uid; 1645 1646 new->u_data = uid; 1647 return new; 1648} 1649 1650/* 1651 * -xdev functions -- 1652 * 1653 * Always true, causes find not to descend past directories that have a 1654 * different device ID (st_dev, see stat() S5.6.2 [POSIX.1]) 1655 */ 1656PLAN * 1657c_xdev(OPTION *option, char ***argvp __unused) 1658{ 1659 ftsoptions |= FTS_XDEV; 1660 1661 return palloc(option); 1662} 1663 1664/* 1665 * ( expression ) functions -- 1666 * 1667 * True if expression is true. 1668 */ 1669int 1670f_expr(PLAN *plan, FTSENT *entry) 1671{ 1672 PLAN *p; 1673 int state = 0; 1674 1675 for (p = plan->p_data[0]; 1676 p && (state = (p->execute)(p, entry)); p = p->next); 1677 return state; 1678} 1679 1680/* 1681 * f_openparen and f_closeparen nodes are temporary place markers. They are 1682 * eliminated during phase 2 of find_formplan() --- the '(' node is converted 1683 * to a f_expr node containing the expression and the ')' node is discarded. 1684 * The functions themselves are only used as constants. 1685 */ 1686 1687int 1688f_openparen(PLAN *plan __unused, FTSENT *entry __unused) 1689{ 1690 abort(); 1691} 1692 1693int 1694f_closeparen(PLAN *plan __unused, FTSENT *entry __unused) 1695{ 1696 abort(); 1697} 1698 1699/* c_openparen == c_simple */ 1700/* c_closeparen == c_simple */ 1701 1702/* 1703 * AND operator. Since AND is implicit, no node is allocated. 1704 */ 1705PLAN * 1706c_and(OPTION *option __unused, char ***argvp __unused) 1707{ 1708 return NULL; 1709} 1710 1711/* 1712 * ! expression functions -- 1713 * 1714 * Negation of a primary; the unary NOT operator. 1715 */ 1716int 1717f_not(PLAN *plan, FTSENT *entry) 1718{ 1719 PLAN *p; 1720 int state = 0; 1721 1722 for (p = plan->p_data[0]; 1723 p && (state = (p->execute)(p, entry)); p = p->next); 1724 return !state; 1725} 1726 1727/* c_not == c_simple */ 1728 1729/* 1730 * expression -o expression functions -- 1731 * 1732 * Alternation of primaries; the OR operator. The second expression is 1733 * not evaluated if the first expression is true. 1734 */ 1735int 1736f_or(PLAN *plan, FTSENT *entry) 1737{ 1738 PLAN *p; 1739 int state = 0; 1740 1741 for (p = plan->p_data[0]; 1742 p && (state = (p->execute)(p, entry)); p = p->next); 1743 1744 if (state) 1745 return 1; 1746 1747 for (p = plan->p_data[1]; 1748 p && (state = (p->execute)(p, entry)); p = p->next); 1749 return state; 1750} 1751 1752/* c_or == c_simple */ 1753 1754/* 1755 * -false 1756 * 1757 * Always false. 1758 */ 1759int 1760f_false(PLAN *plan __unused, FTSENT *entry __unused) 1761{ 1762 return 0; 1763} 1764 1765/* c_false == c_simple */ 1766 1767/* 1768 * -quit 1769 * 1770 * Exits the program 1771 */ 1772int 1773f_quit(PLAN *plan __unused, FTSENT *entry __unused) 1774{ 1775 finish_execplus(); 1776 exit(0); 1777} 1778 1779/* c_quit == c_simple */ 1780