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("$FreeBSD$"); 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 (strchr(entry->fts_accpath, '/') != NULL) 445 errx(1, "-delete: %s: relative path potentially not safe", 446 entry->fts_accpath); 447 448 /* Turn off user immutable bits if running as root */ 449 if ((entry->fts_statp->st_flags & (UF_APPEND|UF_IMMUTABLE)) && 450 !(entry->fts_statp->st_flags & (SF_APPEND|SF_IMMUTABLE)) && 451 geteuid() == 0) 452 lchflags(entry->fts_accpath, 453 entry->fts_statp->st_flags &= ~(UF_APPEND|UF_IMMUTABLE)); 454 455 /* rmdir directories, unlink everything else */ 456 if (S_ISDIR(entry->fts_statp->st_mode)) { 457 if (rmdir(entry->fts_accpath) < 0 && errno != ENOTEMPTY) 458 warn("-delete: rmdir(%s)", entry->fts_path); 459 } else { 460 if (unlink(entry->fts_accpath) < 0) 461 warn("-delete: unlink(%s)", entry->fts_path); 462 } 463 464 /* "succeed" */ 465 return 1; 466} 467 468PLAN * 469c_delete(OPTION *option, char ***argvp __unused) 470{ 471 472 ftsoptions &= ~FTS_NOSTAT; /* no optimise */ 473 isoutput = 1; /* possible output */ 474 isdepth = 1; /* -depth implied */ 475 476 return palloc(option); 477} 478 479 480/* 481 * always_true -- 482 * 483 * Always true, used for -maxdepth, -mindepth, -xdev, -follow, and -true 484 */ 485int 486f_always_true(PLAN *plan __unused, FTSENT *entry __unused) 487{ 488 return 1; 489} 490 491/* 492 * -depth functions -- 493 * 494 * With argument: True if the file is at level n. 495 * Without argument: Always true, causes descent of the directory hierarchy 496 * to be done so that all entries in a directory are acted on before the 497 * directory itself. 498 */ 499int 500f_depth(PLAN *plan, FTSENT *entry) 501{ 502 if (plan->flags & F_DEPTH) 503 COMPARE(entry->fts_level, plan->d_data); 504 else 505 return 1; 506} 507 508PLAN * 509c_depth(OPTION *option, char ***argvp) 510{ 511 PLAN *new; 512 char *str; 513 514 new = palloc(option); 515 516 str = **argvp; 517 if (str && !(new->flags & F_DEPTH)) { 518 /* skip leading + or - */ 519 if (*str == '+' || *str == '-') 520 str++; 521 /* skip sign */ 522 if (*str == '+' || *str == '-') 523 str++; 524 if (isdigit(*str)) 525 new->flags |= F_DEPTH; 526 } 527 528 if (new->flags & F_DEPTH) { /* -depth n */ 529 char *ndepth; 530 531 ndepth = nextarg(option, argvp); 532 new->d_data = find_parsenum(new, option->name, ndepth, NULL); 533 } else { /* -d */ 534 isdepth = 1; 535 } 536 537 return new; 538} 539 540/* 541 * -empty functions -- 542 * 543 * True if the file or directory is empty 544 */ 545int 546f_empty(PLAN *plan __unused, FTSENT *entry) 547{ 548 if (S_ISREG(entry->fts_statp->st_mode) && 549 entry->fts_statp->st_size == 0) 550 return 1; 551 if (S_ISDIR(entry->fts_statp->st_mode)) { 552 struct dirent *dp; 553 int empty; 554 DIR *dir; 555 556 empty = 1; 557 dir = opendir(entry->fts_accpath); 558 if (dir == NULL) 559 return 0; 560 for (dp = readdir(dir); dp; dp = readdir(dir)) 561 if (dp->d_name[0] != '.' || 562 (dp->d_name[1] != '\0' && 563 (dp->d_name[1] != '.' || dp->d_name[2] != '\0'))) { 564 empty = 0; 565 break; 566 } 567 closedir(dir); 568 return empty; 569 } 570 return 0; 571} 572 573PLAN * 574c_empty(OPTION *option, char ***argvp __unused) 575{ 576 ftsoptions &= ~FTS_NOSTAT; 577 578 return palloc(option); 579} 580 581/* 582 * [-exec | -execdir | -ok] utility [arg ... ] ; functions -- 583 * 584 * True if the executed utility returns a zero value as exit status. 585 * The end of the primary expression is delimited by a semicolon. If 586 * "{}" occurs anywhere, it gets replaced by the current pathname, 587 * or, in the case of -execdir, the current basename (filename 588 * without leading directory prefix). For -exec and -ok, 589 * the current directory for the execution of utility is the same as 590 * the current directory when the find utility was started, whereas 591 * for -execdir, it is the directory the file resides in. 592 * 593 * The primary -ok differs from -exec in that it requests affirmation 594 * of the user before executing the utility. 595 */ 596int 597f_exec(PLAN *plan, FTSENT *entry) 598{ 599 int cnt; 600 pid_t pid; 601 int status; 602 char *file; 603 604 if (entry == NULL && plan->flags & F_EXECPLUS) { 605 if (plan->e_ppos == plan->e_pbnum) 606 return (1); 607 plan->e_argv[plan->e_ppos] = NULL; 608 goto doexec; 609 } 610 611 /* XXX - if file/dir ends in '/' this will not work -- can it? */ 612 if ((plan->flags & F_EXECDIR) && \ 613 (file = strrchr(entry->fts_path, '/'))) 614 file++; 615 else 616 file = entry->fts_path; 617 618 if (plan->flags & F_EXECPLUS) { 619 if ((plan->e_argv[plan->e_ppos] = strdup(file)) == NULL) 620 err(1, NULL); 621 plan->e_len[plan->e_ppos] = strlen(file); 622 plan->e_psize += plan->e_len[plan->e_ppos]; 623 if (++plan->e_ppos < plan->e_pnummax && 624 plan->e_psize < plan->e_psizemax) 625 return (1); 626 plan->e_argv[plan->e_ppos] = NULL; 627 } else { 628 for (cnt = 0; plan->e_argv[cnt]; ++cnt) 629 if (plan->e_len[cnt]) 630 brace_subst(plan->e_orig[cnt], 631 &plan->e_argv[cnt], file, 632 plan->e_len[cnt]); 633 } 634 635doexec: if ((plan->flags & F_NEEDOK) && !queryuser(plan->e_argv)) 636 return 0; 637 638 /* make sure find output is interspersed correctly with subprocesses */ 639 fflush(stdout); 640 fflush(stderr); 641 642 switch (pid = fork()) { 643 case -1: 644 err(1, "fork"); 645 /* NOTREACHED */ 646 case 0: 647 /* change dir back from where we started */ 648 if (!(plan->flags & F_EXECDIR) && fchdir(dotfd)) { 649 warn("chdir"); 650 _exit(1); 651 } 652 execvp(plan->e_argv[0], plan->e_argv); 653 warn("%s", plan->e_argv[0]); 654 _exit(1); 655 } 656 if (plan->flags & F_EXECPLUS) { 657 while (--plan->e_ppos >= plan->e_pbnum) 658 free(plan->e_argv[plan->e_ppos]); 659 plan->e_ppos = plan->e_pbnum; 660 plan->e_psize = plan->e_pbsize; 661 } 662 pid = waitpid(pid, &status, 0); 663 return (pid != -1 && WIFEXITED(status) && !WEXITSTATUS(status)); 664} 665 666/* 667 * c_exec, c_execdir, c_ok -- 668 * build three parallel arrays, one with pointers to the strings passed 669 * on the command line, one with (possibly duplicated) pointers to the 670 * argv array, and one with integer values that are lengths of the 671 * strings, but also flags meaning that the string has to be massaged. 672 */ 673PLAN * 674c_exec(OPTION *option, char ***argvp) 675{ 676 PLAN *new; /* node returned */ 677 long argmax; 678 int cnt, i; 679 char **argv, **ap, **ep, *p; 680 681 /* XXX - was in c_execdir, but seems unnecessary!? 682 ftsoptions &= ~FTS_NOSTAT; 683 */ 684 isoutput = 1; 685 686 /* XXX - this is a change from the previous coding */ 687 new = palloc(option); 688 689 for (ap = argv = *argvp;; ++ap) { 690 if (!*ap) 691 errx(1, 692 "%s: no terminating \";\" or \"+\"", option->name); 693 if (**ap == ';') 694 break; 695 if (**ap == '+' && ap != argv && strcmp(*(ap - 1), "{}") == 0) { 696 new->flags |= F_EXECPLUS; 697 break; 698 } 699 } 700 701 if (ap == argv) 702 errx(1, "%s: no command specified", option->name); 703 704 cnt = ap - *argvp + 1; 705 if (new->flags & F_EXECPLUS) { 706 new->e_ppos = new->e_pbnum = cnt - 2; 707 if ((argmax = sysconf(_SC_ARG_MAX)) == -1) { 708 warn("sysconf(_SC_ARG_MAX)"); 709 argmax = _POSIX_ARG_MAX; 710 } 711 argmax -= 1024; 712 for (ep = environ; *ep != NULL; ep++) 713 argmax -= strlen(*ep) + 1 + sizeof(*ep); 714 argmax -= 1 + sizeof(*ep); 715 new->e_pnummax = argmax / 16; 716 argmax -= sizeof(char *) * new->e_pnummax; 717 if (argmax <= 0) 718 errx(1, "no space for arguments"); 719 new->e_psizemax = argmax; 720 new->e_pbsize = 0; 721 cnt += new->e_pnummax + 1; 722 new->e_next = lastexecplus; 723 lastexecplus = new; 724 } 725 if ((new->e_argv = malloc(cnt * sizeof(char *))) == NULL) 726 err(1, NULL); 727 if ((new->e_orig = malloc(cnt * sizeof(char *))) == NULL) 728 err(1, NULL); 729 if ((new->e_len = malloc(cnt * sizeof(int))) == NULL) 730 err(1, NULL); 731 732 for (argv = *argvp, cnt = 0; argv < ap; ++argv, ++cnt) { 733 new->e_orig[cnt] = *argv; 734 if (new->flags & F_EXECPLUS) 735 new->e_pbsize += strlen(*argv) + 1; 736 for (p = *argv; *p; ++p) 737 if (!(new->flags & F_EXECPLUS) && p[0] == '{' && 738 p[1] == '}') { 739 if ((new->e_argv[cnt] = 740 malloc(MAXPATHLEN)) == NULL) 741 err(1, NULL); 742 new->e_len[cnt] = MAXPATHLEN; 743 break; 744 } 745 if (!*p) { 746 new->e_argv[cnt] = *argv; 747 new->e_len[cnt] = 0; 748 } 749 } 750 if (new->flags & F_EXECPLUS) { 751 new->e_psize = new->e_pbsize; 752 cnt--; 753 for (i = 0; i < new->e_pnummax; i++) { 754 new->e_argv[cnt] = NULL; 755 new->e_len[cnt] = 0; 756 cnt++; 757 } 758 argv = ap; 759 goto done; 760 } 761 new->e_argv[cnt] = new->e_orig[cnt] = NULL; 762 763done: *argvp = argv + 1; 764 return new; 765} 766 767/* Finish any pending -exec ... {} + functions. */ 768void 769finish_execplus(void) 770{ 771 PLAN *p; 772 773 p = lastexecplus; 774 while (p != NULL) { 775 (p->execute)(p, NULL); 776 p = p->e_next; 777 } 778} 779 780int 781f_flags(PLAN *plan, FTSENT *entry) 782{ 783 u_long flags; 784 785 flags = entry->fts_statp->st_flags; 786 if (plan->flags & F_ATLEAST) 787 return (flags | plan->fl_flags) == flags && 788 !(flags & plan->fl_notflags); 789 else if (plan->flags & F_ANY) 790 return (flags & plan->fl_flags) || 791 (flags | plan->fl_notflags) != flags; 792 else 793 return flags == plan->fl_flags && 794 !(plan->fl_flags & plan->fl_notflags); 795} 796 797PLAN * 798c_flags(OPTION *option, char ***argvp) 799{ 800 char *flags_str; 801 PLAN *new; 802 u_long flags, notflags; 803 804 flags_str = nextarg(option, argvp); 805 ftsoptions &= ~FTS_NOSTAT; 806 807 new = palloc(option); 808 809 if (*flags_str == '-') { 810 new->flags |= F_ATLEAST; 811 flags_str++; 812 } else if (*flags_str == '+') { 813 new->flags |= F_ANY; 814 flags_str++; 815 } 816 if (strtofflags(&flags_str, &flags, ¬flags) == 1) 817 errx(1, "%s: %s: illegal flags string", option->name, flags_str); 818 819 new->fl_flags = flags; 820 new->fl_notflags = notflags; 821 return new; 822} 823 824/* 825 * -follow functions -- 826 * 827 * Always true, causes symbolic links to be followed on a global 828 * basis. 829 */ 830PLAN * 831c_follow(OPTION *option, char ***argvp __unused) 832{ 833 ftsoptions &= ~FTS_PHYSICAL; 834 ftsoptions |= FTS_LOGICAL; 835 836 return palloc(option); 837} 838 839/* 840 * -fstype functions -- 841 * 842 * True if the file is of a certain type. 843 */ 844int 845f_fstype(PLAN *plan, FTSENT *entry) 846{ 847 static dev_t curdev; /* need a guaranteed illegal dev value */ 848 static int first = 1; 849 struct statfs sb; 850 static int val_flags; 851 static char fstype[sizeof(sb.f_fstypename)]; 852 char *p, save[2] = {0,0}; 853 854 if ((plan->flags & F_MTMASK) == F_MTUNKNOWN) 855 return 0; 856 857 /* Only check when we cross mount point. */ 858 if (first || curdev != entry->fts_statp->st_dev) { 859 curdev = entry->fts_statp->st_dev; 860 861 /* 862 * Statfs follows symlinks; find wants the link's filesystem, 863 * not where it points. 864 */ 865 if (entry->fts_info == FTS_SL || 866 entry->fts_info == FTS_SLNONE) { 867 if ((p = strrchr(entry->fts_accpath, '/')) != NULL) 868 ++p; 869 else 870 p = entry->fts_accpath; 871 save[0] = p[0]; 872 p[0] = '.'; 873 save[1] = p[1]; 874 p[1] = '\0'; 875 } else 876 p = NULL; 877 878 if (statfs(entry->fts_accpath, &sb)) 879 err(1, "%s", entry->fts_accpath); 880 881 if (p) { 882 p[0] = save[0]; 883 p[1] = save[1]; 884 } 885 886 first = 0; 887 888 /* 889 * Further tests may need both of these values, so 890 * always copy both of them. 891 */ 892 val_flags = sb.f_flags; 893 strlcpy(fstype, sb.f_fstypename, sizeof(fstype)); 894 } 895 switch (plan->flags & F_MTMASK) { 896 case F_MTFLAG: 897 return val_flags & plan->mt_data; 898 case F_MTTYPE: 899 return (strncmp(fstype, plan->c_data, sizeof(fstype)) == 0); 900 default: 901 abort(); 902 } 903} 904 905PLAN * 906c_fstype(OPTION *option, char ***argvp) 907{ 908 char *fsname; 909 PLAN *new; 910 911 fsname = nextarg(option, argvp); 912 ftsoptions &= ~FTS_NOSTAT; 913 914 new = palloc(option); 915 switch (*fsname) { 916 case 'l': 917 if (!strcmp(fsname, "local")) { 918 new->flags |= F_MTFLAG; 919 new->mt_data = MNT_LOCAL; 920 return new; 921 } 922 break; 923 case 'r': 924 if (!strcmp(fsname, "rdonly")) { 925 new->flags |= F_MTFLAG; 926 new->mt_data = MNT_RDONLY; 927 return new; 928 } 929 break; 930 } 931 932 new->flags |= F_MTTYPE; 933 new->c_data = fsname; 934 return new; 935} 936 937/* 938 * -group gname functions -- 939 * 940 * True if the file belongs to the group gname. If gname is numeric and 941 * an equivalent of the getgrnam() function does not return a valid group 942 * name, gname is taken as a group ID. 943 */ 944int 945f_group(PLAN *plan, FTSENT *entry) 946{ 947 COMPARE(entry->fts_statp->st_gid, plan->g_data); 948} 949 950PLAN * 951c_group(OPTION *option, char ***argvp) 952{ 953 char *gname; 954 PLAN *new; 955 struct group *g; 956 gid_t gid; 957 958 gname = nextarg(option, argvp); 959 ftsoptions &= ~FTS_NOSTAT; 960 961 new = palloc(option); 962 g = getgrnam(gname); 963 if (g == NULL) { 964 char* cp = gname; 965 if (gname[0] == '-' || gname[0] == '+') 966 gname++; 967 gid = atoi(gname); 968 if (gid == 0 && gname[0] != '0') 969 errx(1, "%s: %s: no such group", option->name, gname); 970 gid = find_parsenum(new, option->name, cp, NULL); 971 } else 972 gid = g->gr_gid; 973 974 new->g_data = gid; 975 return new; 976} 977 978/* 979 * -ignore_readdir_race functions -- 980 * 981 * Always true. Ignore errors which occur if a file or a directory 982 * in a starting point gets deleted between reading the name and calling 983 * stat on it while find is traversing the starting point. 984 */ 985 986PLAN * 987c_ignore_readdir_race(OPTION *option, char ***argvp __unused) 988{ 989 if (strcmp(option->name, "-ignore_readdir_race") == 0) 990 ignore_readdir_race = 1; 991 else 992 ignore_readdir_race = 0; 993 994 return palloc(option); 995} 996 997/* 998 * -inum n functions -- 999 * 1000 * True if the file has inode # n. 1001 */ 1002int 1003f_inum(PLAN *plan, FTSENT *entry) 1004{ 1005 COMPARE(entry->fts_statp->st_ino, plan->i_data); 1006} 1007 1008PLAN * 1009c_inum(OPTION *option, char ***argvp) 1010{ 1011 char *inum_str; 1012 PLAN *new; 1013 1014 inum_str = nextarg(option, argvp); 1015 ftsoptions &= ~FTS_NOSTAT; 1016 1017 new = palloc(option); 1018 new->i_data = find_parsenum(new, option->name, inum_str, NULL); 1019 return new; 1020} 1021 1022/* 1023 * -samefile FN 1024 * 1025 * True if the file has the same inode (eg hard link) FN 1026 */ 1027 1028/* f_samefile is just f_inum */ 1029PLAN * 1030c_samefile(OPTION *option, char ***argvp) 1031{ 1032 char *fn; 1033 PLAN *new; 1034 struct stat sb; 1035 1036 fn = nextarg(option, argvp); 1037 ftsoptions &= ~FTS_NOSTAT; 1038 1039 new = palloc(option); 1040 if (stat(fn, &sb)) 1041 err(1, "%s", fn); 1042 new->i_data = sb.st_ino; 1043 return new; 1044} 1045 1046/* 1047 * -links n functions -- 1048 * 1049 * True if the file has n links. 1050 */ 1051int 1052f_links(PLAN *plan, FTSENT *entry) 1053{ 1054 COMPARE(entry->fts_statp->st_nlink, plan->l_data); 1055} 1056 1057PLAN * 1058c_links(OPTION *option, char ***argvp) 1059{ 1060 char *nlinks; 1061 PLAN *new; 1062 1063 nlinks = nextarg(option, argvp); 1064 ftsoptions &= ~FTS_NOSTAT; 1065 1066 new = palloc(option); 1067 new->l_data = (nlink_t)find_parsenum(new, option->name, nlinks, NULL); 1068 return new; 1069} 1070 1071/* 1072 * -ls functions -- 1073 * 1074 * Always true - prints the current entry to stdout in "ls" format. 1075 */ 1076int 1077f_ls(PLAN *plan __unused, FTSENT *entry) 1078{ 1079 printlong(entry->fts_path, entry->fts_accpath, entry->fts_statp); 1080 return 1; 1081} 1082 1083PLAN * 1084c_ls(OPTION *option, char ***argvp __unused) 1085{ 1086 ftsoptions &= ~FTS_NOSTAT; 1087 isoutput = 1; 1088 1089 return palloc(option); 1090} 1091 1092/* 1093 * -name functions -- 1094 * 1095 * True if the basename of the filename being examined 1096 * matches pattern using Pattern Matching Notation S3.14 1097 */ 1098int 1099f_name(PLAN *plan, FTSENT *entry) 1100{ 1101 char fn[PATH_MAX]; 1102 const char *name; 1103 ssize_t len; 1104 1105 if (plan->flags & F_LINK) { 1106 /* 1107 * The below test both avoids obviously useless readlink() 1108 * calls and ensures that symlinks with existent target do 1109 * not match if symlinks are being followed. 1110 * Assumption: fts will stat all symlinks that are to be 1111 * followed and will return the stat information. 1112 */ 1113 if (entry->fts_info != FTS_NSOK && entry->fts_info != FTS_SL && 1114 entry->fts_info != FTS_SLNONE) 1115 return 0; 1116 len = readlink(entry->fts_accpath, fn, sizeof(fn) - 1); 1117 if (len == -1) 1118 return 0; 1119 fn[len] = '\0'; 1120 name = fn; 1121 } else 1122 name = entry->fts_name; 1123 return !fnmatch(plan->c_data, name, 1124 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 1125} 1126 1127PLAN * 1128c_name(OPTION *option, char ***argvp) 1129{ 1130 char *pattern; 1131 PLAN *new; 1132 1133 pattern = nextarg(option, argvp); 1134 new = palloc(option); 1135 new->c_data = pattern; 1136 return new; 1137} 1138 1139/* 1140 * -newer file functions -- 1141 * 1142 * True if the current file has been modified more recently 1143 * then the modification time of the file named by the pathname 1144 * file. 1145 */ 1146int 1147f_newer(PLAN *plan, FTSENT *entry) 1148{ 1149 struct timespec ft; 1150 1151 if (plan->flags & F_TIME_C) 1152 ft = entry->fts_statp->st_ctim; 1153 else if (plan->flags & F_TIME_A) 1154 ft = entry->fts_statp->st_atim; 1155 else if (plan->flags & F_TIME_B) 1156 ft = entry->fts_statp->st_birthtim; 1157 else 1158 ft = entry->fts_statp->st_mtim; 1159 return (ft.tv_sec > plan->t_data.tv_sec || 1160 (ft.tv_sec == plan->t_data.tv_sec && 1161 ft.tv_nsec > plan->t_data.tv_nsec)); 1162} 1163 1164PLAN * 1165c_newer(OPTION *option, char ***argvp) 1166{ 1167 char *fn_or_tspec; 1168 PLAN *new; 1169 struct stat sb; 1170 1171 fn_or_tspec = nextarg(option, argvp); 1172 ftsoptions &= ~FTS_NOSTAT; 1173 1174 new = palloc(option); 1175 /* compare against what */ 1176 if (option->flags & F_TIME2_T) { 1177 new->t_data.tv_sec = get_date(fn_or_tspec); 1178 if (new->t_data.tv_sec == (time_t) -1) 1179 errx(1, "Can't parse date/time: %s", fn_or_tspec); 1180 /* Use the seconds only in the comparison. */ 1181 new->t_data.tv_nsec = 999999999; 1182 } else { 1183 if (stat(fn_or_tspec, &sb)) 1184 err(1, "%s", fn_or_tspec); 1185 if (option->flags & F_TIME2_C) 1186 new->t_data = sb.st_ctim; 1187 else if (option->flags & F_TIME2_A) 1188 new->t_data = sb.st_atim; 1189 else if (option->flags & F_TIME2_B) 1190 new->t_data = sb.st_birthtim; 1191 else 1192 new->t_data = sb.st_mtim; 1193 } 1194 return new; 1195} 1196 1197/* 1198 * -nogroup functions -- 1199 * 1200 * True if file belongs to a user ID for which the equivalent 1201 * of the getgrnam() 9.2.1 [POSIX.1] function returns NULL. 1202 */ 1203int 1204f_nogroup(PLAN *plan __unused, FTSENT *entry) 1205{ 1206 return group_from_gid(entry->fts_statp->st_gid, 1) == NULL; 1207} 1208 1209PLAN * 1210c_nogroup(OPTION *option, char ***argvp __unused) 1211{ 1212 ftsoptions &= ~FTS_NOSTAT; 1213 1214 return palloc(option); 1215} 1216 1217/* 1218 * -nouser functions -- 1219 * 1220 * True if file belongs to a user ID for which the equivalent 1221 * of the getpwuid() 9.2.2 [POSIX.1] function returns NULL. 1222 */ 1223int 1224f_nouser(PLAN *plan __unused, FTSENT *entry) 1225{ 1226 return user_from_uid(entry->fts_statp->st_uid, 1) == NULL; 1227} 1228 1229PLAN * 1230c_nouser(OPTION *option, char ***argvp __unused) 1231{ 1232 ftsoptions &= ~FTS_NOSTAT; 1233 1234 return palloc(option); 1235} 1236 1237/* 1238 * -path functions -- 1239 * 1240 * True if the path of the filename being examined 1241 * matches pattern using Pattern Matching Notation S3.14 1242 */ 1243int 1244f_path(PLAN *plan, FTSENT *entry) 1245{ 1246 return !fnmatch(plan->c_data, entry->fts_path, 1247 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 1248} 1249 1250/* c_path is the same as c_name */ 1251 1252/* 1253 * -perm functions -- 1254 * 1255 * The mode argument is used to represent file mode bits. If it starts 1256 * with a leading digit, it's treated as an octal mode, otherwise as a 1257 * symbolic mode. 1258 */ 1259int 1260f_perm(PLAN *plan, FTSENT *entry) 1261{ 1262 mode_t mode; 1263 1264 mode = entry->fts_statp->st_mode & 1265 (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO); 1266 if (plan->flags & F_ATLEAST) 1267 return (plan->m_data | mode) == mode; 1268 else if (plan->flags & F_ANY) 1269 return (mode & plan->m_data); 1270 else 1271 return mode == plan->m_data; 1272 /* NOTREACHED */ 1273} 1274 1275PLAN * 1276c_perm(OPTION *option, char ***argvp) 1277{ 1278 char *perm; 1279 PLAN *new; 1280 mode_t *set; 1281 1282 perm = nextarg(option, argvp); 1283 ftsoptions &= ~FTS_NOSTAT; 1284 1285 new = palloc(option); 1286 1287 if (*perm == '-') { 1288 new->flags |= F_ATLEAST; 1289 ++perm; 1290 } else if (*perm == '+') { 1291 new->flags |= F_ANY; 1292 ++perm; 1293 } 1294 1295 if ((set = setmode(perm)) == NULL) 1296 errx(1, "%s: %s: illegal mode string", option->name, perm); 1297 1298 new->m_data = getmode(set, 0); 1299 free(set); 1300 return new; 1301} 1302 1303/* 1304 * -print functions -- 1305 * 1306 * Always true, causes the current pathname to be written to 1307 * standard output. 1308 */ 1309int 1310f_print(PLAN *plan __unused, FTSENT *entry) 1311{ 1312 (void)puts(entry->fts_path); 1313 return 1; 1314} 1315 1316PLAN * 1317c_print(OPTION *option, char ***argvp __unused) 1318{ 1319 isoutput = 1; 1320 1321 return palloc(option); 1322} 1323 1324/* 1325 * -print0 functions -- 1326 * 1327 * Always true, causes the current pathname to be written to 1328 * standard output followed by a NUL character 1329 */ 1330int 1331f_print0(PLAN *plan __unused, FTSENT *entry) 1332{ 1333 fputs(entry->fts_path, stdout); 1334 fputc('\0', stdout); 1335 return 1; 1336} 1337 1338/* c_print0 is the same as c_print */ 1339 1340/* 1341 * -prune functions -- 1342 * 1343 * Prune a portion of the hierarchy. 1344 */ 1345int 1346f_prune(PLAN *plan __unused, FTSENT *entry) 1347{ 1348 if (fts_set(tree, entry, FTS_SKIP)) 1349 err(1, "%s", entry->fts_path); 1350 return 1; 1351} 1352 1353/* c_prune == c_simple */ 1354 1355/* 1356 * -regex functions -- 1357 * 1358 * True if the whole path of the file matches pattern using 1359 * regular expression. 1360 */ 1361int 1362f_regex(PLAN *plan, FTSENT *entry) 1363{ 1364 char *str; 1365 int len; 1366 regex_t *pre; 1367 regmatch_t pmatch; 1368 int errcode; 1369 char errbuf[LINE_MAX]; 1370 int matched; 1371 1372 pre = plan->re_data; 1373 str = entry->fts_path; 1374 len = strlen(str); 1375 matched = 0; 1376 1377 pmatch.rm_so = 0; 1378 pmatch.rm_eo = len; 1379 1380 errcode = regexec(pre, str, 1, &pmatch, REG_STARTEND); 1381 1382 if (errcode != 0 && errcode != REG_NOMATCH) { 1383 regerror(errcode, pre, errbuf, sizeof errbuf); 1384 errx(1, "%s: %s", 1385 plan->flags & F_IGNCASE ? "-iregex" : "-regex", errbuf); 1386 } 1387 1388 if (errcode == 0 && pmatch.rm_so == 0 && pmatch.rm_eo == len) 1389 matched = 1; 1390 1391 return matched; 1392} 1393 1394PLAN * 1395c_regex(OPTION *option, char ***argvp) 1396{ 1397 PLAN *new; 1398 char *pattern; 1399 regex_t *pre; 1400 int errcode; 1401 char errbuf[LINE_MAX]; 1402 1403 if ((pre = malloc(sizeof(regex_t))) == NULL) 1404 err(1, NULL); 1405 1406 pattern = nextarg(option, argvp); 1407 1408 if ((errcode = regcomp(pre, pattern, 1409 regexp_flags | (option->flags & F_IGNCASE ? REG_ICASE : 0))) != 0) { 1410 regerror(errcode, pre, errbuf, sizeof errbuf); 1411 errx(1, "%s: %s: %s", 1412 option->flags & F_IGNCASE ? "-iregex" : "-regex", 1413 pattern, errbuf); 1414 } 1415 1416 new = palloc(option); 1417 new->re_data = pre; 1418 1419 return new; 1420} 1421 1422/* c_simple covers c_prune, c_openparen, c_closeparen, c_not, c_or, c_true, c_false */ 1423 1424PLAN * 1425c_simple(OPTION *option, char ***argvp __unused) 1426{ 1427 return palloc(option); 1428} 1429 1430/* 1431 * -size n[c] functions -- 1432 * 1433 * True if the file size in bytes, divided by an implementation defined 1434 * value and rounded up to the next integer, is n. If n is followed by 1435 * one of c k M G T P, the size is in bytes, kilobytes, 1436 * megabytes, gigabytes, terabytes or petabytes respectively. 1437 */ 1438#define FIND_SIZE 512 1439static int divsize = 1; 1440 1441int 1442f_size(PLAN *plan, FTSENT *entry) 1443{ 1444 off_t size; 1445 1446 size = divsize ? (entry->fts_statp->st_size + FIND_SIZE - 1) / 1447 FIND_SIZE : entry->fts_statp->st_size; 1448 COMPARE(size, plan->o_data); 1449} 1450 1451PLAN * 1452c_size(OPTION *option, char ***argvp) 1453{ 1454 char *size_str; 1455 PLAN *new; 1456 char endch; 1457 off_t scale; 1458 1459 size_str = nextarg(option, argvp); 1460 ftsoptions &= ~FTS_NOSTAT; 1461 1462 new = palloc(option); 1463 endch = 'c'; 1464 new->o_data = find_parsenum(new, option->name, size_str, &endch); 1465 if (endch != '\0') { 1466 divsize = 0; 1467 1468 switch (endch) { 1469 case 'c': /* characters */ 1470 scale = 0x1LL; 1471 break; 1472 case 'k': /* kilobytes 1<<10 */ 1473 scale = 0x400LL; 1474 break; 1475 case 'M': /* megabytes 1<<20 */ 1476 scale = 0x100000LL; 1477 break; 1478 case 'G': /* gigabytes 1<<30 */ 1479 scale = 0x40000000LL; 1480 break; 1481 case 'T': /* terabytes 1<<40 */ 1482 scale = 0x1000000000LL; 1483 break; 1484 case 'P': /* petabytes 1<<50 */ 1485 scale = 0x4000000000000LL; 1486 break; 1487 default: 1488 errx(1, "%s: %s: illegal trailing character", 1489 option->name, size_str); 1490 break; 1491 } 1492 if (new->o_data > QUAD_MAX / scale) 1493 errx(1, "%s: %s: value too large", 1494 option->name, size_str); 1495 new->o_data *= scale; 1496 } 1497 return new; 1498} 1499 1500/* 1501 * -type c functions -- 1502 * 1503 * True if the type of the file is c, where c is b, c, d, p, f or w 1504 * for block special file, character special file, directory, FIFO, 1505 * regular file or whiteout respectively. 1506 */ 1507int 1508f_type(PLAN *plan, FTSENT *entry) 1509{ 1510 return (entry->fts_statp->st_mode & S_IFMT) == plan->m_data; 1511} 1512 1513PLAN * 1514c_type(OPTION *option, char ***argvp) 1515{ 1516 char *typestring; 1517 PLAN *new; 1518 mode_t mask; 1519 1520 typestring = nextarg(option, argvp); 1521 ftsoptions &= ~FTS_NOSTAT; 1522 1523 switch (typestring[0]) { 1524 case 'b': 1525 mask = S_IFBLK; 1526 break; 1527 case 'c': 1528 mask = S_IFCHR; 1529 break; 1530 case 'd': 1531 mask = S_IFDIR; 1532 break; 1533 case 'f': 1534 mask = S_IFREG; 1535 break; 1536 case 'l': 1537 mask = S_IFLNK; 1538 break; 1539 case 'p': 1540 mask = S_IFIFO; 1541 break; 1542 case 's': 1543 mask = S_IFSOCK; 1544 break; 1545#ifdef FTS_WHITEOUT 1546 case 'w': 1547 mask = S_IFWHT; 1548 ftsoptions |= FTS_WHITEOUT; 1549 break; 1550#endif /* FTS_WHITEOUT */ 1551 default: 1552 errx(1, "%s: %s: unknown type", option->name, typestring); 1553 } 1554 1555 new = palloc(option); 1556 new->m_data = mask; 1557 return new; 1558} 1559 1560/* 1561 * -user uname functions -- 1562 * 1563 * True if the file belongs to the user uname. If uname is numeric and 1564 * an equivalent of the getpwnam() S9.2.2 [POSIX.1] function does not 1565 * return a valid user name, uname is taken as a user ID. 1566 */ 1567int 1568f_user(PLAN *plan, FTSENT *entry) 1569{ 1570 COMPARE(entry->fts_statp->st_uid, plan->u_data); 1571} 1572 1573PLAN * 1574c_user(OPTION *option, char ***argvp) 1575{ 1576 char *username; 1577 PLAN *new; 1578 struct passwd *p; 1579 uid_t uid; 1580 1581 username = nextarg(option, argvp); 1582 ftsoptions &= ~FTS_NOSTAT; 1583 1584 new = palloc(option); 1585 p = getpwnam(username); 1586 if (p == NULL) { 1587 char* cp = username; 1588 if( username[0] == '-' || username[0] == '+' ) 1589 username++; 1590 uid = atoi(username); 1591 if (uid == 0 && username[0] != '0') 1592 errx(1, "%s: %s: no such user", option->name, username); 1593 uid = find_parsenum(new, option->name, cp, NULL); 1594 } else 1595 uid = p->pw_uid; 1596 1597 new->u_data = uid; 1598 return new; 1599} 1600 1601/* 1602 * -xdev functions -- 1603 * 1604 * Always true, causes find not to descend past directories that have a 1605 * different device ID (st_dev, see stat() S5.6.2 [POSIX.1]) 1606 */ 1607PLAN * 1608c_xdev(OPTION *option, char ***argvp __unused) 1609{ 1610 ftsoptions |= FTS_XDEV; 1611 1612 return palloc(option); 1613} 1614 1615/* 1616 * ( expression ) functions -- 1617 * 1618 * True if expression is true. 1619 */ 1620int 1621f_expr(PLAN *plan, FTSENT *entry) 1622{ 1623 PLAN *p; 1624 int state = 0; 1625 1626 for (p = plan->p_data[0]; 1627 p && (state = (p->execute)(p, entry)); p = p->next); 1628 return state; 1629} 1630 1631/* 1632 * f_openparen and f_closeparen nodes are temporary place markers. They are 1633 * eliminated during phase 2 of find_formplan() --- the '(' node is converted 1634 * to a f_expr node containing the expression and the ')' node is discarded. 1635 * The functions themselves are only used as constants. 1636 */ 1637 1638int 1639f_openparen(PLAN *plan __unused, FTSENT *entry __unused) 1640{ 1641 abort(); 1642} 1643 1644int 1645f_closeparen(PLAN *plan __unused, FTSENT *entry __unused) 1646{ 1647 abort(); 1648} 1649 1650/* c_openparen == c_simple */ 1651/* c_closeparen == c_simple */ 1652 1653/* 1654 * AND operator. Since AND is implicit, no node is allocated. 1655 */ 1656PLAN * 1657c_and(OPTION *option __unused, char ***argvp __unused) 1658{ 1659 return NULL; 1660} 1661 1662/* 1663 * ! expression functions -- 1664 * 1665 * Negation of a primary; the unary NOT operator. 1666 */ 1667int 1668f_not(PLAN *plan, FTSENT *entry) 1669{ 1670 PLAN *p; 1671 int state = 0; 1672 1673 for (p = plan->p_data[0]; 1674 p && (state = (p->execute)(p, entry)); p = p->next); 1675 return !state; 1676} 1677 1678/* c_not == c_simple */ 1679 1680/* 1681 * expression -o expression functions -- 1682 * 1683 * Alternation of primaries; the OR operator. The second expression is 1684 * not evaluated if the first expression is true. 1685 */ 1686int 1687f_or(PLAN *plan, FTSENT *entry) 1688{ 1689 PLAN *p; 1690 int state = 0; 1691 1692 for (p = plan->p_data[0]; 1693 p && (state = (p->execute)(p, entry)); p = p->next); 1694 1695 if (state) 1696 return 1; 1697 1698 for (p = plan->p_data[1]; 1699 p && (state = (p->execute)(p, entry)); p = p->next); 1700 return state; 1701} 1702 1703/* c_or == c_simple */ 1704 1705/* 1706 * -false 1707 * 1708 * Always false. 1709 */ 1710int 1711f_false(PLAN *plan __unused, FTSENT *entry __unused) 1712{ 1713 return 0; 1714} 1715 1716/* c_false == c_simple */ 1717 1718/* 1719 * -quit 1720 * 1721 * Exits the program 1722 */ 1723int 1724f_quit(PLAN *plan __unused, FTSENT *entry __unused) 1725{ 1726 finish_execplus(); 1727 exit(0); 1728} 1729 1730/* c_quit == c_simple */ 1731