function.c revision 264782
11590Srgrimes/*- 21590Srgrimes * Copyright (c) 1990, 1993 31590Srgrimes * The Regents of the University of California. All rights reserved. 41590Srgrimes * 51590Srgrimes * This code is derived from software contributed to Berkeley by 61590Srgrimes * Cimarron D. Taylor of the University of California, Berkeley. 71590Srgrimes * 81590Srgrimes * Redistribution and use in source and binary forms, with or without 91590Srgrimes * modification, are permitted provided that the following conditions 101590Srgrimes * are met: 111590Srgrimes * 1. Redistributions of source code must retain the above copyright 121590Srgrimes * notice, this list of conditions and the following disclaimer. 131590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141590Srgrimes * notice, this list of conditions and the following disclaimer in the 151590Srgrimes * documentation and/or other materials provided with the distribution. 161590Srgrimes * 4. Neither the name of the University nor the names of its contributors 171590Srgrimes * may be used to endorse or promote products derived from this software 181590Srgrimes * without specific prior written permission. 191590Srgrimes * 201590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 211590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 221590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 231590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 241590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 251590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 261590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 271590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 281590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 291590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 301590Srgrimes * SUCH DAMAGE. 311590Srgrimes */ 321590Srgrimes 331590Srgrimes#ifndef lint 3441568Sarchie#if 0 351590Srgrimesstatic const char sccsid[] = "@(#)function.c 8.10 (Berkeley) 5/4/95"; 361590Srgrimes#endif 3787242Smarkm#endif /* not lint */ 381590Srgrimes 3987628Sdwmalone#include <sys/cdefs.h> 401590Srgrimes__FBSDID("$FreeBSD: stable/10/usr.bin/find/function.c 264782 2014-04-22 21:13:25Z brueffer $"); 4187628Sdwmalone 4258602Scharnier#include <sys/param.h> 4387628Sdwmalone#include <sys/ucred.h> 441590Srgrimes#include <sys/stat.h> 4587628Sdwmalone#include <sys/types.h> 4687628Sdwmalone#include <sys/acl.h> 4787628Sdwmalone#include <sys/wait.h> 48282949Sbapt#include <sys/mount.h> 49282949Sbapt 501590Srgrimes#include <dirent.h> 51282949Sbapt#include <err.h> 52132824Stjr#include <errno.h> 531590Srgrimes#include <fnmatch.h> 541590Srgrimes#include <fts.h> 55132825Stjr#include <grp.h> 56282949Sbapt#include <limits.h> 5723693Speter#include <pwd.h> 58132824Stjr#include <regex.h> 59132824Stjr#include <stdio.h> 601590Srgrimes#include <stdlib.h> 611590Srgrimes#include <string.h> 621590Srgrimes#include <unistd.h> 631590Srgrimes#include <ctype.h> 641590Srgrimes 651590Srgrimes#include "find.h" 661590Srgrimes 671590Srgrimesstatic PLAN *palloc(OPTION *); 681590Srgrimesstatic long long find_parsenum(PLAN *, const char *, char *, char *); 691590Srgrimesstatic long long find_parsetime(PLAN *, const char *, char *); 70282949Sbaptstatic char *nextarg(OPTION *, char ***); 71282949Sbapt 72282949Sbaptextern char **environ; 731590Srgrimes 741590Srgrimesstatic PLAN *lastexecplus = NULL; 751590Srgrimes 761590Srgrimes#define COMPARE(a, b) do { \ 771590Srgrimes switch (plan->flags & F_ELG_MASK) { \ 781590Srgrimes case F_EQUAL: \ 791590Srgrimes return (a == b); \ 801590Srgrimes case F_LESSTHAN: \ 811590Srgrimes return (a < b); \ 821590Srgrimes case F_GREATER: \ 831590Srgrimes return (a > b); \ 84132824Stjr default: \ 85132824Stjr abort(); \ 861590Srgrimes } \ 871590Srgrimes} while(0) 881590Srgrimes 891590Srgrimesstatic PLAN * 901590Srgrimespalloc(OPTION *option) 911590Srgrimes{ 921590Srgrimes PLAN *new; 931590Srgrimes 941590Srgrimes if ((new = malloc(sizeof(PLAN))) == NULL) 951590Srgrimes err(1, NULL); 961590Srgrimes new->execute = option->execute; 971590Srgrimes new->flags = option->flags; 981590Srgrimes new->next = NULL; 99282949Sbapt return new; 100227157Sed} 101227157Sed 102227157Sed/* 103227157Sed * find_parsenum -- 104227157Sed * Parse a string of the form [+-]# and return the value. 105227157Sed */ 106227157Sedstatic long long 1071590Srgrimesfind_parsenum(PLAN *plan, const char *option, char *vp, char *endch) 108227157Sed{ 109227157Sed long long value; 110227157Sed char *endchar, *str; /* Pointer to character ending conversion. */ 111227157Sed 112282949Sbapt /* Determine comparison from leading + or -. */ 113227157Sed str = vp; 114227157Sed switch (*str) { 115227157Sed case '+': 1161590Srgrimes ++str; 1171590Srgrimes plan->flags |= F_GREATER; 11878383Smikeh break; 119132824Stjr case '-': 12078383Smikeh ++str; 1215676Sbde plan->flags |= F_LESSTHAN; 1221590Srgrimes break; 1231590Srgrimes default: 124102944Sdwmalone plan->flags |= F_EQUAL; 1251590Srgrimes break; 126132824Stjr } 1271590Srgrimes 1281590Srgrimes /* 1291590Srgrimes * Convert the string with strtoq(). Note, if strtoq() returns zero 1301590Srgrimes * and endchar points to the beginning of the string we know we have 1311590Srgrimes * a syntax error. 1321590Srgrimes */ 1331590Srgrimes value = strtoq(str, &endchar, 10); 1341590Srgrimes if (value == 0 && endchar == str) 1351590Srgrimes errx(1, "%s: %s: illegal numeric value", option, vp); 136132824Stjr if (endchar[0] && endch == NULL) 137282949Sbapt errx(1, "%s: %s: illegal trailing character", option, vp); 138282949Sbapt if (endch) 139282949Sbapt *endch = endchar[0]; 1401590Srgrimes return value; 14178383Smikeh} 14211765Sache 143282949Sbapt/* 144282949Sbapt * find_parsetime -- 145282949Sbapt * Parse a string of the form [+-]([0-9]+[smhdw]?)+ and return the value. 146282949Sbapt */ 147282949Sbaptstatic long long 148282949Sbaptfind_parsetime(PLAN *plan, const char *option, char *vp) 149282949Sbapt{ 150282949Sbapt long long secs, value; 151282949Sbapt char *str, *unit; /* Pointer to character ending conversion. */ 152282949Sbapt 153282949Sbapt /* Determine comparison from leading + or -. */ 154282949Sbapt str = vp; 155282949Sbapt switch (*str) { 156282949Sbapt case '+': 1571590Srgrimes ++str; 15878384Smikeh plan->flags |= F_GREATER; 1591590Srgrimes break; 1601590Srgrimes case '-': 1611590Srgrimes ++str; 1621590Srgrimes plan->flags |= F_LESSTHAN; 1631590Srgrimes break; 1641590Srgrimes default: 1651590Srgrimes plan->flags |= F_EQUAL; 1661590Srgrimes break; 1671590Srgrimes } 1681590Srgrimes 1691590Srgrimes value = strtoq(str, &unit, 10); 170282949Sbapt if (value == 0 && unit == str) { 171282949Sbapt errx(1, "%s: %s: illegal time value", option, vp); 172282949Sbapt /* NOTREACHED */ 173282949Sbapt } 174282949Sbapt if (*unit == '\0') 1751590Srgrimes return value; 17678384Smikeh 17778384Smikeh /* Units syntax. */ 17878384Smikeh secs = 0; 1791590Srgrimes for (;;) { 1801590Srgrimes switch(*unit) { 1811590Srgrimes case 's': /* seconds */ 1821590Srgrimes secs += value; 1831590Srgrimes break; 1841590Srgrimes case 'm': /* minutes */ 1851590Srgrimes secs += value * 60; 1861590Srgrimes break; 1871590Srgrimes case 'h': /* hours */ 1881590Srgrimes secs += value * 3600; 1891590Srgrimes break; 1901590Srgrimes case 'd': /* days */ 1911590Srgrimes secs += value * 86400; 1921590Srgrimes break; 1931590Srgrimes case 'w': /* weeks */ 1941590Srgrimes secs += value * 604800; 195132824Stjr break; 196132824Stjr default: 1971590Srgrimes errx(1, "%s: %s: bad unit '%c'", option, vp, *unit); 1981590Srgrimes /* NOTREACHED */ 1991590Srgrimes } 2001590Srgrimes str = unit + 1; 2011590Srgrimes if (*str == '\0') /* EOS */ 2021590Srgrimes break; 2031590Srgrimes value = strtoq(str, &unit, 10); 2041590Srgrimes if (value == 0 && unit == str) { 2051590Srgrimes errx(1, "%s: %s: illegal time value", option, vp); 2061590Srgrimes /* NOTREACHED */ 207132824Stjr } 208282949Sbapt if (*unit == '\0') { 209282949Sbapt errx(1, "%s: %s: missing trailing unit", option, vp); 210282949Sbapt /* NOTREACHED */ 211282949Sbapt } 212282949Sbapt } 213282949Sbapt plan->flags |= F_EXACTTIME; 214282949Sbapt return secs; 2151590Srgrimes} 216282949Sbapt 2171590Srgrimes/* 218282949Sbapt * nextarg -- 219282949Sbapt * Check that another argument still exists, return a pointer to it, 2201590Srgrimes * and increment the argument vector pointer. 221282949Sbapt */ 2221590Srgrimesstatic char * 223282949Sbaptnextarg(OPTION *option, char ***argvp) 224282949Sbapt{ 2251590Srgrimes char *arg; 226282949Sbapt 2271590Srgrimes if ((arg = **argvp) == 0) 2281590Srgrimes errx(1, "%s: requires additional arguments", option->name); 2291590Srgrimes (*argvp)++; 2301590Srgrimes return arg; 2311590Srgrimes} /* nextarg() */ 232282949Sbapt 2331590Srgrimes/* 2341590Srgrimes * The value of n for the inode times (atime, birthtime, ctime, mtime) is a 2351590Srgrimes * range, i.e. n matches from (n - 1) to n 24 hour periods. This interacts 2361590Srgrimes * with -n, such that "-mtime -1" would be less than 0 days, which isn't what 2371590Srgrimes * the user wanted. Correct so that -1 is "less than 1". 2381590Srgrimes */ 2391590Srgrimes#define TIME_CORRECT(p) \ 2401590Srgrimes if (((p)->flags & F_ELG_MASK) == F_LESSTHAN) \ 2411590Srgrimes ++((p)->t_data.tv_sec); 2421590Srgrimes 2431590Srgrimes/* 2441590Srgrimes * -[acm]min n functions -- 2451590Srgrimes * 2461590Srgrimes * True if the difference between the 2471590Srgrimes * file access time (-amin) 2481590Srgrimes * file birth time (-Bmin) 2491590Srgrimes * last change of file status information (-cmin) 2501590Srgrimes * file modification time (-mmin) 251282949Sbapt * and the current time is n min periods. 2521590Srgrimes */ 2531590Srgrimesint 254132824Stjrf_Xmin(PLAN *plan, FTSENT *entry) 255132824Stjr{ 256132824Stjr if (plan->flags & F_TIME_C) { 257132824Stjr COMPARE((now - entry->fts_statp->st_ctime + 258132824Stjr 60 - 1) / 60, plan->t_data.tv_sec); 25978384Smikeh } else if (plan->flags & F_TIME_A) { 26078384Smikeh COMPARE((now - entry->fts_statp->st_atime + 2611590Srgrimes 60 - 1) / 60, plan->t_data.tv_sec); 2621590Srgrimes } else if (plan->flags & F_TIME_B) { 2631590Srgrimes COMPARE((now - entry->fts_statp->st_birthtime + 264282949Sbapt 60 - 1) / 60, plan->t_data.tv_sec); 2651590Srgrimes } else { 2661590Srgrimes COMPARE((now - entry->fts_statp->st_mtime + 267282949Sbapt 60 - 1) / 60, plan->t_data.tv_sec); 268282949Sbapt } 269282949Sbapt} 270282949Sbapt 271282949SbaptPLAN * 272282949Sbaptc_Xmin(OPTION *option, char ***argvp) 273282949Sbapt{ 274282949Sbapt char *nmins; 2751590Srgrimes PLAN *new; 276282949Sbapt 2771590Srgrimes nmins = nextarg(option, argvp); 2781590Srgrimes ftsoptions &= ~FTS_NOSTAT; 2791590Srgrimes 2801590Srgrimes new = palloc(option); 2811590Srgrimes new->t_data.tv_sec = find_parsenum(new, option->name, nmins, NULL); 2821590Srgrimes new->t_data.tv_nsec = 0; 283282949Sbapt TIME_CORRECT(new); 284282949Sbapt return new; 2851590Srgrimes} 2861590Srgrimes 2871590Srgrimes/* 2881590Srgrimes * -[acm]time n functions -- 2891590Srgrimes * 290282949Sbapt * True if the difference between the 2911590Srgrimes * file access time (-atime) 2921590Srgrimes * file birth time (-Btime) 2931590Srgrimes * last change of file status information (-ctime) 2941590Srgrimes * file modification time (-mtime) 295282949Sbapt * and the current time is n 24 hour periods. 2961590Srgrimes */ 2971590Srgrimes 2981590Srgrimesint 2991590Srgrimesf_Xtime(PLAN *plan, FTSENT *entry) 300282949Sbapt{ 301282949Sbapt time_t xtime; 302282949Sbapt 303282949Sbapt if (plan->flags & F_TIME_A) 304282949Sbapt xtime = entry->fts_statp->st_atime; 3051590Srgrimes else if (plan->flags & F_TIME_B) 306282949Sbapt xtime = entry->fts_statp->st_birthtime; 3071590Srgrimes else if (plan->flags & F_TIME_C) 3081590Srgrimes xtime = entry->fts_statp->st_ctime; 309282949Sbapt else 310282949Sbapt xtime = entry->fts_statp->st_mtime; 311282949Sbapt 312282949Sbapt if (plan->flags & F_EXACTTIME) 313282949Sbapt COMPARE(now - xtime, plan->t_data.tv_sec); 314282949Sbapt else 315282949Sbapt COMPARE((now - xtime + 86400 - 1) / 86400, plan->t_data.tv_sec); 316282949Sbapt} 317282949Sbapt 318282949SbaptPLAN * 3191590Srgrimesc_Xtime(OPTION *option, char ***argvp) 3201590Srgrimes{ 3211590Srgrimes char *value; 3221590Srgrimes PLAN *new; 3231590Srgrimes 3241590Srgrimes value = nextarg(option, argvp); 3251590Srgrimes ftsoptions &= ~FTS_NOSTAT; 32680293Sobrien 32780293Sobrien new = palloc(option); 32880293Sobrien new->t_data.tv_sec = find_parsetime(new, option->name, value); 3291590Srgrimes new->t_data.tv_nsec = 0; 3301590Srgrimes if (!(new->flags & F_EXACTTIME)) 3311590Srgrimes TIME_CORRECT(new); 3321590Srgrimes return new; 3331590Srgrimes} 3341590Srgrimes 335132824Stjr/* 3361590Srgrimes * -maxdepth/-mindepth n functions -- 3371590Srgrimes * 3381590Srgrimes * Does the same as -prune if the level of the current file is 3391590Srgrimes * greater/less than the specified maximum/minimum depth. 3401590Srgrimes * 3411590Srgrimes * Note that -maxdepth and -mindepth are handled specially in 3421590Srgrimes * find_execute() so their f_* functions are set to f_always_true(). 3431590Srgrimes */ 344132824StjrPLAN * 345132824Stjrc_mXXdepth(OPTION *option, char ***argvp) 3461590Srgrimes{ 347132824Stjr char *dstr; 348132824Stjr PLAN *new; 349282949Sbapt 350282949Sbapt dstr = nextarg(option, argvp); 35123693Speter if (dstr[0] == '-') 3521590Srgrimes /* all other errors handled by find_parsenum() */ 3531590Srgrimes errx(1, "%s: %s: value must be positive", option->name, dstr); 3541590Srgrimes 355282949Sbapt new = palloc(option); 3561590Srgrimes if (option->flags & F_MAXDEPTH) 3571590Srgrimes maxdepth = find_parsenum(new, option->name, dstr, NULL); 3581590Srgrimes else 359282949Sbapt mindepth = find_parsenum(new, option->name, dstr, NULL); 3601590Srgrimes return new; 3611590Srgrimes} 362282949Sbapt 363282949Sbapt/* 3641590Srgrimes * -acl function -- 3651590Srgrimes * 3661590Srgrimes * Show files with EXTENDED ACL attributes. 3671590Srgrimes */ 3681590Srgrimesint 3691590Srgrimesf_acl(PLAN *plan __unused, FTSENT *entry) 370227157Sed{ 371102944Sdwmalone acl_t facl; 3721590Srgrimes acl_type_t acl_type; 3731590Srgrimes int acl_supported = 0, ret, trivial; 3741590Srgrimes 3751590Srgrimes if (S_ISLNK(entry->fts_statp->st_mode)) 3761590Srgrimes return 0; 3771590Srgrimes ret = pathconf(entry->fts_accpath, _PC_ACL_NFS4); 3781590Srgrimes if (ret > 0) { 3791590Srgrimes acl_supported = 1; 3801590Srgrimes acl_type = ACL_TYPE_NFS4; 3811590Srgrimes } else if (ret < 0 && errno != EINVAL) { 382282949Sbapt warn("%s", entry->fts_accpath); 383282949Sbapt return (0); 3841590Srgrimes } 38578383Smikeh if (acl_supported == 0) { 3861590Srgrimes ret = pathconf(entry->fts_accpath, _PC_ACL_EXTENDED); 3871590Srgrimes if (ret > 0) { 3881590Srgrimes acl_supported = 1; 3891590Srgrimes acl_type = ACL_TYPE_ACCESS; 3901590Srgrimes } else if (ret < 0 && errno != EINVAL) { 3911590Srgrimes warn("%s", entry->fts_accpath); 3921590Srgrimes return (0); 3931590Srgrimes } 3941590Srgrimes } 3951590Srgrimes if (acl_supported == 0) 3961590Srgrimes return (0); 397227157Sed 398102944Sdwmalone facl = acl_get_file(entry->fts_accpath, acl_type); 3991590Srgrimes if (facl == NULL) { 4001590Srgrimes warn("%s", entry->fts_accpath); 4011590Srgrimes return (0); 4021590Srgrimes } 4031590Srgrimes ret = acl_is_trivial_np(facl, &trivial); 4041590Srgrimes acl_free(facl); 4051590Srgrimes if (ret) { 4061590Srgrimes warn("%s", entry->fts_accpath); 4071590Srgrimes return (0); 4081590Srgrimes } 4091590Srgrimes if (trivial) 4101590Srgrimes return (0); 4111590Srgrimes return (1); 4121590Srgrimes} 4131590Srgrimes 414282949SbaptPLAN * 415282949Sbaptc_acl(OPTION *option, char ***argvp __unused) 4161590Srgrimes{ 4171590Srgrimes ftsoptions &= ~FTS_NOSTAT; 4181590Srgrimes return (palloc(option)); 4191590Srgrimes} 4201590Srgrimes 4211590Srgrimes/* 4221590Srgrimes * -delete functions -- 4231590Srgrimes * 4241590Srgrimes * True always. Makes its best shot and continues on regardless. 4251590Srgrimes */ 426227157Sedint 427102944Sdwmalonef_delete(PLAN *plan __unused, FTSENT *entry) 4281590Srgrimes{ 4291590Srgrimes /* ignore these from fts */ 430160464Sstefanf if (strcmp(entry->fts_accpath, ".") == 0 || 4311590Srgrimes strcmp(entry->fts_accpath, "..") == 0) 4321590Srgrimes return 1; 4331590Srgrimes 4341590Srgrimes /* sanity check */ 4351590Srgrimes if (isdepth == 0 || /* depth off */ 4361590Srgrimes (ftsoptions & FTS_NOSTAT)) /* not stat()ing */ 437160464Sstefanf errx(1, "-delete: insecure options got turned on"); 4381590Srgrimes 4391590Srgrimes if (!(ftsoptions & FTS_PHYSICAL) || /* physical off */ 4401590Srgrimes (ftsoptions & FTS_LOGICAL)) /* or finally, logical on */ 4411590Srgrimes errx(1, "-delete: forbidden when symlinks are followed"); 4421590Srgrimes 4431590Srgrimes /* Potentially unsafe - do not accept relative paths whatsoever */ 4441590Srgrimes if (entry->fts_level > FTS_ROOTLEVEL && 44580293Sobrien strchr(entry->fts_accpath, '/') != NULL) 44680293Sobrien errx(1, "-delete: %s: relative path potentially not safe", 44780293Sobrien entry->fts_accpath); 4481590Srgrimes 4491590Srgrimes /* Turn off user immutable bits if running as root */ 4501590Srgrimes if ((entry->fts_statp->st_flags & (UF_APPEND|UF_IMMUTABLE)) && 45180293Sobrien !(entry->fts_statp->st_flags & (SF_APPEND|SF_IMMUTABLE)) && 45280293Sobrien geteuid() == 0) 45380293Sobrien lchflags(entry->fts_accpath, 4541590Srgrimes entry->fts_statp->st_flags &= ~(UF_APPEND|UF_IMMUTABLE)); 45578383Smikeh 4561590Srgrimes /* rmdir directories, unlink everything else */ 4571590Srgrimes if (S_ISDIR(entry->fts_statp->st_mode)) { 4581590Srgrimes if (rmdir(entry->fts_accpath) < 0 && errno != ENOTEMPTY) 4591590Srgrimes warn("-delete: rmdir(%s)", entry->fts_path); 4601590Srgrimes } else { 4611590Srgrimes if (unlink(entry->fts_accpath) < 0) 4621590Srgrimes warn("-delete: unlink(%s)", entry->fts_path); 4631590Srgrimes } 4641590Srgrimes 4651590Srgrimes /* "succeed" */ 4661590Srgrimes return 1; 4671590Srgrimes} 4681590Srgrimes 4691590SrgrimesPLAN * 4701590Srgrimesc_delete(OPTION *option, char ***argvp __unused) 4711590Srgrimes{ 4721590Srgrimes 4731590Srgrimes ftsoptions &= ~FTS_NOSTAT; /* no optimise */ 4741590Srgrimes isoutput = 1; /* possible output */ 4751590Srgrimes isdepth = 1; /* -depth implied */ 4761590Srgrimes 4771590Srgrimes /* 4781590Srgrimes * Try to avoid the confusing error message about relative paths 4791590Srgrimes * being potentially not safe. 4801590Srgrimes */ 4811590Srgrimes if (ftsoptions & FTS_NOCHDIR) 482132824Stjr errx(1, "%s: forbidden when the current directory cannot be opened", 4831590Srgrimes "-delete"); 484132824Stjr 485132824Stjr return palloc(option); 486132824Stjr} 487132824Stjr 4881590Srgrimes 4891590Srgrimes/* 4901590Srgrimes * always_true -- 4911590Srgrimes * 4921590Srgrimes * Always true, used for -maxdepth, -mindepth, -xdev, -follow, and -true 4935676Sbde */ 494210088Semasteint 4951590Srgrimesf_always_true(PLAN *plan __unused, FTSENT *entry __unused) 4965676Sbde{ 4975676Sbde return 1; 4985676Sbde} 4995676Sbde 5005676Sbde/* 5015676Sbde * -depth functions -- 5025676Sbde * 5035676Sbde * With argument: True if the file is at level n. 5045676Sbde * Without argument: Always true, causes descent of the directory hierarchy 5055676Sbde * to be done so that all entries in a directory are acted on before the 5065676Sbde * directory itself. 5071590Srgrimes */ 5081590Srgrimesint 5091590Srgrimesf_depth(PLAN *plan, FTSENT *entry) 5101590Srgrimes{ 5111590Srgrimes if (plan->flags & F_DEPTH) 5121590Srgrimes COMPARE(entry->fts_level, plan->d_data); 5131590Srgrimes else 5141590Srgrimes return 1; 5151590Srgrimes} 5161590Srgrimes 517282949SbaptPLAN * 5181590Srgrimesc_depth(OPTION *option, char ***argvp) 5191590Srgrimes{ 520282949Sbapt PLAN *new; 5211590Srgrimes char *str; 5221590Srgrimes 5231590Srgrimes new = palloc(option); 5241590Srgrimes 525132824Stjr str = **argvp; 526152394Sdwmalone if (str && !(new->flags & F_DEPTH)) { 527132824Stjr /* skip leading + or - */ 5281590Srgrimes if (*str == '+' || *str == '-') 5291590Srgrimes str++; 5301590Srgrimes /* skip sign */ 531132824Stjr if (*str == '+' || *str == '-') 5321590Srgrimes str++; 5331590Srgrimes if (isdigit(*str)) 5341590Srgrimes new->flags |= F_DEPTH; 535282949Sbapt } 536282949Sbapt 537282949Sbapt if (new->flags & F_DEPTH) { /* -depth n */ 538282949Sbapt char *ndepth; 539282949Sbapt 540282949Sbapt ndepth = nextarg(option, argvp); 541282949Sbapt new->d_data = find_parsenum(new, option->name, ndepth, NULL); 542282949Sbapt } else { /* -d */ 543282949Sbapt isdepth = 1; 544282949Sbapt } 545282949Sbapt 546282949Sbapt return new; 547282949Sbapt} 548282949Sbapt 549282949Sbapt/* 550282949Sbapt * -empty functions -- 551282949Sbapt * 5521590Srgrimes * True if the file or directory is empty 5531590Srgrimes */ 5541590Srgrimesint 5551590Srgrimesf_empty(PLAN *plan __unused, FTSENT *entry) 556227157Sed{ 557102944Sdwmalone if (S_ISREG(entry->fts_statp->st_mode) && 5581590Srgrimes entry->fts_statp->st_size == 0) 5591590Srgrimes return 1; 5601590Srgrimes if (S_ISDIR(entry->fts_statp->st_mode)) { 5611590Srgrimes struct dirent *dp; 5621590Srgrimes int empty; 56380293Sobrien DIR *dir; 56480293Sobrien 5651590Srgrimes empty = 1; 5661590Srgrimes dir = opendir(entry->fts_accpath); 5671590Srgrimes if (dir == NULL) 5681590Srgrimes return 0; 5691590Srgrimes for (dp = readdir(dir); dp; dp = readdir(dir)) 5701590Srgrimes if (dp->d_name[0] != '.' || 5711590Srgrimes (dp->d_name[1] != '\0' && 5721590Srgrimes (dp->d_name[1] != '.' || dp->d_name[2] != '\0'))) { 5731590Srgrimes empty = 0; 5741590Srgrimes break; 5751590Srgrimes } 5761590Srgrimes closedir(dir); 577227157Sed return empty; 578102944Sdwmalone } 5791590Srgrimes return 0; 5801590Srgrimes} 5811590Srgrimes 5821590SrgrimesPLAN * 5831590Srgrimesc_empty(OPTION *option, char ***argvp __unused) 5841590Srgrimes{ 585227157Sed ftsoptions &= ~FTS_NOSTAT; 586102944Sdwmalone 5871590Srgrimes return palloc(option); 5881590Srgrimes} 58978384Smikeh 5901590Srgrimes/* 5911590Srgrimes * [-exec | -execdir | -ok] utility [arg ... ] ; functions -- 5921590Srgrimes * 593227157Sed * True if the executed utility returns a zero value as exit status. 594102944Sdwmalone * The end of the primary expression is delimited by a semicolon. If 5951590Srgrimes * "{}" occurs anywhere, it gets replaced by the current pathname, 5961590Srgrimes * or, in the case of -execdir, the current basename (filename 5971590Srgrimes * without leading directory prefix). For -exec and -ok, 5981590Srgrimes * the current directory for the execution of utility is the same as 5991590Srgrimes * 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 err(1, "%s", entry->fts_accpath); 901 902 if (p) { 903 p[0] = save[0]; 904 p[1] = save[1]; 905 } 906 907 first = 0; 908 909 /* 910 * Further tests may need both of these values, so 911 * always copy both of them. 912 */ 913 val_flags = sb.f_flags; 914 strlcpy(fstype, sb.f_fstypename, sizeof(fstype)); 915 } 916 switch (plan->flags & F_MTMASK) { 917 case F_MTFLAG: 918 return val_flags & plan->mt_data; 919 case F_MTTYPE: 920 return (strncmp(fstype, plan->c_data, sizeof(fstype)) == 0); 921 default: 922 abort(); 923 } 924} 925 926PLAN * 927c_fstype(OPTION *option, char ***argvp) 928{ 929 char *fsname; 930 PLAN *new; 931 932 fsname = nextarg(option, argvp); 933 ftsoptions &= ~FTS_NOSTAT; 934 935 new = palloc(option); 936 switch (*fsname) { 937 case 'l': 938 if (!strcmp(fsname, "local")) { 939 new->flags |= F_MTFLAG; 940 new->mt_data = MNT_LOCAL; 941 return new; 942 } 943 break; 944 case 'r': 945 if (!strcmp(fsname, "rdonly")) { 946 new->flags |= F_MTFLAG; 947 new->mt_data = MNT_RDONLY; 948 return new; 949 } 950 break; 951 } 952 953 new->flags |= F_MTTYPE; 954 new->c_data = fsname; 955 return new; 956} 957 958/* 959 * -group gname functions -- 960 * 961 * True if the file belongs to the group gname. If gname is numeric and 962 * an equivalent of the getgrnam() function does not return a valid group 963 * name, gname is taken as a group ID. 964 */ 965int 966f_group(PLAN *plan, FTSENT *entry) 967{ 968 COMPARE(entry->fts_statp->st_gid, plan->g_data); 969} 970 971PLAN * 972c_group(OPTION *option, char ***argvp) 973{ 974 char *gname; 975 PLAN *new; 976 struct group *g; 977 gid_t gid; 978 979 gname = nextarg(option, argvp); 980 ftsoptions &= ~FTS_NOSTAT; 981 982 new = palloc(option); 983 g = getgrnam(gname); 984 if (g == NULL) { 985 char* cp = gname; 986 if (gname[0] == '-' || gname[0] == '+') 987 gname++; 988 gid = atoi(gname); 989 if (gid == 0 && gname[0] != '0') 990 errx(1, "%s: %s: no such group", option->name, gname); 991 gid = find_parsenum(new, option->name, cp, NULL); 992 } else 993 gid = g->gr_gid; 994 995 new->g_data = gid; 996 return new; 997} 998 999/* 1000 * -ignore_readdir_race functions -- 1001 * 1002 * Always true. Ignore errors which occur if a file or a directory 1003 * in a starting point gets deleted between reading the name and calling 1004 * stat on it while find is traversing the starting point. 1005 */ 1006 1007PLAN * 1008c_ignore_readdir_race(OPTION *option, char ***argvp __unused) 1009{ 1010 if (strcmp(option->name, "-ignore_readdir_race") == 0) 1011 ignore_readdir_race = 1; 1012 else 1013 ignore_readdir_race = 0; 1014 1015 return palloc(option); 1016} 1017 1018/* 1019 * -inum n functions -- 1020 * 1021 * True if the file has inode # n. 1022 */ 1023int 1024f_inum(PLAN *plan, FTSENT *entry) 1025{ 1026 COMPARE(entry->fts_statp->st_ino, plan->i_data); 1027} 1028 1029PLAN * 1030c_inum(OPTION *option, char ***argvp) 1031{ 1032 char *inum_str; 1033 PLAN *new; 1034 1035 inum_str = nextarg(option, argvp); 1036 ftsoptions &= ~FTS_NOSTAT; 1037 1038 new = palloc(option); 1039 new->i_data = find_parsenum(new, option->name, inum_str, NULL); 1040 return new; 1041} 1042 1043/* 1044 * -samefile FN 1045 * 1046 * True if the file has the same inode (eg hard link) FN 1047 */ 1048 1049/* f_samefile is just f_inum */ 1050PLAN * 1051c_samefile(OPTION *option, char ***argvp) 1052{ 1053 char *fn; 1054 PLAN *new; 1055 struct stat sb; 1056 1057 fn = nextarg(option, argvp); 1058 ftsoptions &= ~FTS_NOSTAT; 1059 1060 new = palloc(option); 1061 if (stat(fn, &sb)) 1062 err(1, "%s", fn); 1063 new->i_data = sb.st_ino; 1064 return new; 1065} 1066 1067/* 1068 * -links n functions -- 1069 * 1070 * True if the file has n links. 1071 */ 1072int 1073f_links(PLAN *plan, FTSENT *entry) 1074{ 1075 COMPARE(entry->fts_statp->st_nlink, plan->l_data); 1076} 1077 1078PLAN * 1079c_links(OPTION *option, char ***argvp) 1080{ 1081 char *nlinks; 1082 PLAN *new; 1083 1084 nlinks = nextarg(option, argvp); 1085 ftsoptions &= ~FTS_NOSTAT; 1086 1087 new = palloc(option); 1088 new->l_data = (nlink_t)find_parsenum(new, option->name, nlinks, NULL); 1089 return new; 1090} 1091 1092/* 1093 * -ls functions -- 1094 * 1095 * Always true - prints the current entry to stdout in "ls" format. 1096 */ 1097int 1098f_ls(PLAN *plan __unused, FTSENT *entry) 1099{ 1100 printlong(entry->fts_path, entry->fts_accpath, entry->fts_statp); 1101 return 1; 1102} 1103 1104PLAN * 1105c_ls(OPTION *option, char ***argvp __unused) 1106{ 1107 ftsoptions &= ~FTS_NOSTAT; 1108 isoutput = 1; 1109 1110 return palloc(option); 1111} 1112 1113/* 1114 * -name functions -- 1115 * 1116 * True if the basename of the filename being examined 1117 * matches pattern using Pattern Matching Notation S3.14 1118 */ 1119int 1120f_name(PLAN *plan, FTSENT *entry) 1121{ 1122 char fn[PATH_MAX]; 1123 const char *name; 1124 ssize_t len; 1125 1126 if (plan->flags & F_LINK) { 1127 /* 1128 * The below test both avoids obviously useless readlink() 1129 * calls and ensures that symlinks with existent target do 1130 * not match if symlinks are being followed. 1131 * Assumption: fts will stat all symlinks that are to be 1132 * followed and will return the stat information. 1133 */ 1134 if (entry->fts_info != FTS_NSOK && entry->fts_info != FTS_SL && 1135 entry->fts_info != FTS_SLNONE) 1136 return 0; 1137 len = readlink(entry->fts_accpath, fn, sizeof(fn) - 1); 1138 if (len == -1) 1139 return 0; 1140 fn[len] = '\0'; 1141 name = fn; 1142 } else 1143 name = entry->fts_name; 1144 return !fnmatch(plan->c_data, name, 1145 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 1146} 1147 1148PLAN * 1149c_name(OPTION *option, char ***argvp) 1150{ 1151 char *pattern; 1152 PLAN *new; 1153 1154 pattern = nextarg(option, argvp); 1155 new = palloc(option); 1156 new->c_data = pattern; 1157 return new; 1158} 1159 1160/* 1161 * -newer file functions -- 1162 * 1163 * True if the current file has been modified more recently 1164 * then the modification time of the file named by the pathname 1165 * file. 1166 */ 1167int 1168f_newer(PLAN *plan, FTSENT *entry) 1169{ 1170 struct timespec ft; 1171 1172 if (plan->flags & F_TIME_C) 1173 ft = entry->fts_statp->st_ctim; 1174 else if (plan->flags & F_TIME_A) 1175 ft = entry->fts_statp->st_atim; 1176 else if (plan->flags & F_TIME_B) 1177 ft = entry->fts_statp->st_birthtim; 1178 else 1179 ft = entry->fts_statp->st_mtim; 1180 return (ft.tv_sec > plan->t_data.tv_sec || 1181 (ft.tv_sec == plan->t_data.tv_sec && 1182 ft.tv_nsec > plan->t_data.tv_nsec)); 1183} 1184 1185PLAN * 1186c_newer(OPTION *option, char ***argvp) 1187{ 1188 char *fn_or_tspec; 1189 PLAN *new; 1190 struct stat sb; 1191 1192 fn_or_tspec = nextarg(option, argvp); 1193 ftsoptions &= ~FTS_NOSTAT; 1194 1195 new = palloc(option); 1196 /* compare against what */ 1197 if (option->flags & F_TIME2_T) { 1198 new->t_data.tv_sec = get_date(fn_or_tspec); 1199 if (new->t_data.tv_sec == (time_t) -1) 1200 errx(1, "Can't parse date/time: %s", fn_or_tspec); 1201 /* Use the seconds only in the comparison. */ 1202 new->t_data.tv_nsec = 999999999; 1203 } else { 1204 if (stat(fn_or_tspec, &sb)) 1205 err(1, "%s", fn_or_tspec); 1206 if (option->flags & F_TIME2_C) 1207 new->t_data = sb.st_ctim; 1208 else if (option->flags & F_TIME2_A) 1209 new->t_data = sb.st_atim; 1210 else if (option->flags & F_TIME2_B) 1211 new->t_data = sb.st_birthtim; 1212 else 1213 new->t_data = sb.st_mtim; 1214 } 1215 return new; 1216} 1217 1218/* 1219 * -nogroup functions -- 1220 * 1221 * True if file belongs to a user ID for which the equivalent 1222 * of the getgrnam() 9.2.1 [POSIX.1] function returns NULL. 1223 */ 1224int 1225f_nogroup(PLAN *plan __unused, FTSENT *entry) 1226{ 1227 return group_from_gid(entry->fts_statp->st_gid, 1) == NULL; 1228} 1229 1230PLAN * 1231c_nogroup(OPTION *option, char ***argvp __unused) 1232{ 1233 ftsoptions &= ~FTS_NOSTAT; 1234 1235 return palloc(option); 1236} 1237 1238/* 1239 * -nouser functions -- 1240 * 1241 * True if file belongs to a user ID for which the equivalent 1242 * of the getpwuid() 9.2.2 [POSIX.1] function returns NULL. 1243 */ 1244int 1245f_nouser(PLAN *plan __unused, FTSENT *entry) 1246{ 1247 return user_from_uid(entry->fts_statp->st_uid, 1) == NULL; 1248} 1249 1250PLAN * 1251c_nouser(OPTION *option, char ***argvp __unused) 1252{ 1253 ftsoptions &= ~FTS_NOSTAT; 1254 1255 return palloc(option); 1256} 1257 1258/* 1259 * -path functions -- 1260 * 1261 * True if the path of the filename being examined 1262 * matches pattern using Pattern Matching Notation S3.14 1263 */ 1264int 1265f_path(PLAN *plan, FTSENT *entry) 1266{ 1267 return !fnmatch(plan->c_data, entry->fts_path, 1268 plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); 1269} 1270 1271/* c_path is the same as c_name */ 1272 1273/* 1274 * -perm functions -- 1275 * 1276 * The mode argument is used to represent file mode bits. If it starts 1277 * with a leading digit, it's treated as an octal mode, otherwise as a 1278 * symbolic mode. 1279 */ 1280int 1281f_perm(PLAN *plan, FTSENT *entry) 1282{ 1283 mode_t mode; 1284 1285 mode = entry->fts_statp->st_mode & 1286 (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO); 1287 if (plan->flags & F_ATLEAST) 1288 return (plan->m_data | mode) == mode; 1289 else if (plan->flags & F_ANY) 1290 return (mode & plan->m_data); 1291 else 1292 return mode == plan->m_data; 1293 /* NOTREACHED */ 1294} 1295 1296PLAN * 1297c_perm(OPTION *option, char ***argvp) 1298{ 1299 char *perm; 1300 PLAN *new; 1301 mode_t *set; 1302 1303 perm = nextarg(option, argvp); 1304 ftsoptions &= ~FTS_NOSTAT; 1305 1306 new = palloc(option); 1307 1308 if (*perm == '-') { 1309 new->flags |= F_ATLEAST; 1310 ++perm; 1311 } else if (*perm == '+') { 1312 new->flags |= F_ANY; 1313 ++perm; 1314 } 1315 1316 if ((set = setmode(perm)) == NULL) 1317 errx(1, "%s: %s: illegal mode string", option->name, perm); 1318 1319 new->m_data = getmode(set, 0); 1320 free(set); 1321 return new; 1322} 1323 1324/* 1325 * -print functions -- 1326 * 1327 * Always true, causes the current pathname to be written to 1328 * standard output. 1329 */ 1330int 1331f_print(PLAN *plan __unused, FTSENT *entry) 1332{ 1333 (void)puts(entry->fts_path); 1334 return 1; 1335} 1336 1337PLAN * 1338c_print(OPTION *option, char ***argvp __unused) 1339{ 1340 isoutput = 1; 1341 1342 return palloc(option); 1343} 1344 1345/* 1346 * -print0 functions -- 1347 * 1348 * Always true, causes the current pathname to be written to 1349 * standard output followed by a NUL character 1350 */ 1351int 1352f_print0(PLAN *plan __unused, FTSENT *entry) 1353{ 1354 fputs(entry->fts_path, stdout); 1355 fputc('\0', stdout); 1356 return 1; 1357} 1358 1359/* c_print0 is the same as c_print */ 1360 1361/* 1362 * -prune functions -- 1363 * 1364 * Prune a portion of the hierarchy. 1365 */ 1366int 1367f_prune(PLAN *plan __unused, FTSENT *entry) 1368{ 1369 if (fts_set(tree, entry, FTS_SKIP)) 1370 err(1, "%s", entry->fts_path); 1371 return 1; 1372} 1373 1374/* c_prune == c_simple */ 1375 1376/* 1377 * -regex functions -- 1378 * 1379 * True if the whole path of the file matches pattern using 1380 * regular expression. 1381 */ 1382int 1383f_regex(PLAN *plan, FTSENT *entry) 1384{ 1385 char *str; 1386 int len; 1387 regex_t *pre; 1388 regmatch_t pmatch; 1389 int errcode; 1390 char errbuf[LINE_MAX]; 1391 int matched; 1392 1393 pre = plan->re_data; 1394 str = entry->fts_path; 1395 len = strlen(str); 1396 matched = 0; 1397 1398 pmatch.rm_so = 0; 1399 pmatch.rm_eo = len; 1400 1401 errcode = regexec(pre, str, 1, &pmatch, REG_STARTEND); 1402 1403 if (errcode != 0 && errcode != REG_NOMATCH) { 1404 regerror(errcode, pre, errbuf, sizeof errbuf); 1405 errx(1, "%s: %s", 1406 plan->flags & F_IGNCASE ? "-iregex" : "-regex", errbuf); 1407 } 1408 1409 if (errcode == 0 && pmatch.rm_so == 0 && pmatch.rm_eo == len) 1410 matched = 1; 1411 1412 return matched; 1413} 1414 1415PLAN * 1416c_regex(OPTION *option, char ***argvp) 1417{ 1418 PLAN *new; 1419 char *pattern; 1420 regex_t *pre; 1421 int errcode; 1422 char errbuf[LINE_MAX]; 1423 1424 if ((pre = malloc(sizeof(regex_t))) == NULL) 1425 err(1, NULL); 1426 1427 pattern = nextarg(option, argvp); 1428 1429 if ((errcode = regcomp(pre, pattern, 1430 regexp_flags | (option->flags & F_IGNCASE ? REG_ICASE : 0))) != 0) { 1431 regerror(errcode, pre, errbuf, sizeof errbuf); 1432 errx(1, "%s: %s: %s", 1433 option->flags & F_IGNCASE ? "-iregex" : "-regex", 1434 pattern, errbuf); 1435 } 1436 1437 new = palloc(option); 1438 new->re_data = pre; 1439 1440 return new; 1441} 1442 1443/* c_simple covers c_prune, c_openparen, c_closeparen, c_not, c_or, c_true, c_false */ 1444 1445PLAN * 1446c_simple(OPTION *option, char ***argvp __unused) 1447{ 1448 return palloc(option); 1449} 1450 1451/* 1452 * -size n[c] functions -- 1453 * 1454 * True if the file size in bytes, divided by an implementation defined 1455 * value and rounded up to the next integer, is n. If n is followed by 1456 * one of c k M G T P, the size is in bytes, kilobytes, 1457 * megabytes, gigabytes, terabytes or petabytes respectively. 1458 */ 1459#define FIND_SIZE 512 1460static int divsize = 1; 1461 1462int 1463f_size(PLAN *plan, FTSENT *entry) 1464{ 1465 off_t size; 1466 1467 size = divsize ? (entry->fts_statp->st_size + FIND_SIZE - 1) / 1468 FIND_SIZE : entry->fts_statp->st_size; 1469 COMPARE(size, plan->o_data); 1470} 1471 1472PLAN * 1473c_size(OPTION *option, char ***argvp) 1474{ 1475 char *size_str; 1476 PLAN *new; 1477 char endch; 1478 off_t scale; 1479 1480 size_str = nextarg(option, argvp); 1481 ftsoptions &= ~FTS_NOSTAT; 1482 1483 new = palloc(option); 1484 endch = 'c'; 1485 new->o_data = find_parsenum(new, option->name, size_str, &endch); 1486 if (endch != '\0') { 1487 divsize = 0; 1488 1489 switch (endch) { 1490 case 'c': /* characters */ 1491 scale = 0x1LL; 1492 break; 1493 case 'k': /* kilobytes 1<<10 */ 1494 scale = 0x400LL; 1495 break; 1496 case 'M': /* megabytes 1<<20 */ 1497 scale = 0x100000LL; 1498 break; 1499 case 'G': /* gigabytes 1<<30 */ 1500 scale = 0x40000000LL; 1501 break; 1502 case 'T': /* terabytes 1<<40 */ 1503 scale = 0x1000000000LL; 1504 break; 1505 case 'P': /* petabytes 1<<50 */ 1506 scale = 0x4000000000000LL; 1507 break; 1508 default: 1509 errx(1, "%s: %s: illegal trailing character", 1510 option->name, size_str); 1511 break; 1512 } 1513 if (new->o_data > QUAD_MAX / scale) 1514 errx(1, "%s: %s: value too large", 1515 option->name, size_str); 1516 new->o_data *= scale; 1517 } 1518 return new; 1519} 1520 1521/* 1522 * -sparse functions -- 1523 * 1524 * Check if a file is sparse by finding if it occupies fewer blocks 1525 * than we expect based on its size. 1526 */ 1527int 1528f_sparse(PLAN *plan __unused, FTSENT *entry) 1529{ 1530 off_t expected_blocks; 1531 1532 expected_blocks = (entry->fts_statp->st_size + 511) / 512; 1533 return entry->fts_statp->st_blocks < expected_blocks; 1534} 1535 1536PLAN * 1537c_sparse(OPTION *option, char ***argvp __unused) 1538{ 1539 ftsoptions &= ~FTS_NOSTAT; 1540 1541 return palloc(option); 1542} 1543 1544/* 1545 * -type c functions -- 1546 * 1547 * True if the type of the file is c, where c is b, c, d, p, f or w 1548 * for block special file, character special file, directory, FIFO, 1549 * regular file or whiteout respectively. 1550 */ 1551int 1552f_type(PLAN *plan, FTSENT *entry) 1553{ 1554 return (entry->fts_statp->st_mode & S_IFMT) == plan->m_data; 1555} 1556 1557PLAN * 1558c_type(OPTION *option, char ***argvp) 1559{ 1560 char *typestring; 1561 PLAN *new; 1562 mode_t mask; 1563 1564 typestring = nextarg(option, argvp); 1565 ftsoptions &= ~FTS_NOSTAT; 1566 1567 switch (typestring[0]) { 1568 case 'b': 1569 mask = S_IFBLK; 1570 break; 1571 case 'c': 1572 mask = S_IFCHR; 1573 break; 1574 case 'd': 1575 mask = S_IFDIR; 1576 break; 1577 case 'f': 1578 mask = S_IFREG; 1579 break; 1580 case 'l': 1581 mask = S_IFLNK; 1582 break; 1583 case 'p': 1584 mask = S_IFIFO; 1585 break; 1586 case 's': 1587 mask = S_IFSOCK; 1588 break; 1589#ifdef FTS_WHITEOUT 1590 case 'w': 1591 mask = S_IFWHT; 1592 ftsoptions |= FTS_WHITEOUT; 1593 break; 1594#endif /* FTS_WHITEOUT */ 1595 default: 1596 errx(1, "%s: %s: unknown type", option->name, typestring); 1597 } 1598 1599 new = palloc(option); 1600 new->m_data = mask; 1601 return new; 1602} 1603 1604/* 1605 * -user uname functions -- 1606 * 1607 * True if the file belongs to the user uname. If uname is numeric and 1608 * an equivalent of the getpwnam() S9.2.2 [POSIX.1] function does not 1609 * return a valid user name, uname is taken as a user ID. 1610 */ 1611int 1612f_user(PLAN *plan, FTSENT *entry) 1613{ 1614 COMPARE(entry->fts_statp->st_uid, plan->u_data); 1615} 1616 1617PLAN * 1618c_user(OPTION *option, char ***argvp) 1619{ 1620 char *username; 1621 PLAN *new; 1622 struct passwd *p; 1623 uid_t uid; 1624 1625 username = nextarg(option, argvp); 1626 ftsoptions &= ~FTS_NOSTAT; 1627 1628 new = palloc(option); 1629 p = getpwnam(username); 1630 if (p == NULL) { 1631 char* cp = username; 1632 if( username[0] == '-' || username[0] == '+' ) 1633 username++; 1634 uid = atoi(username); 1635 if (uid == 0 && username[0] != '0') 1636 errx(1, "%s: %s: no such user", option->name, username); 1637 uid = find_parsenum(new, option->name, cp, NULL); 1638 } else 1639 uid = p->pw_uid; 1640 1641 new->u_data = uid; 1642 return new; 1643} 1644 1645/* 1646 * -xdev functions -- 1647 * 1648 * Always true, causes find not to descend past directories that have a 1649 * different device ID (st_dev, see stat() S5.6.2 [POSIX.1]) 1650 */ 1651PLAN * 1652c_xdev(OPTION *option, char ***argvp __unused) 1653{ 1654 ftsoptions |= FTS_XDEV; 1655 1656 return palloc(option); 1657} 1658 1659/* 1660 * ( expression ) functions -- 1661 * 1662 * True if expression is true. 1663 */ 1664int 1665f_expr(PLAN *plan, FTSENT *entry) 1666{ 1667 PLAN *p; 1668 int state = 0; 1669 1670 for (p = plan->p_data[0]; 1671 p && (state = (p->execute)(p, entry)); p = p->next); 1672 return state; 1673} 1674 1675/* 1676 * f_openparen and f_closeparen nodes are temporary place markers. They are 1677 * eliminated during phase 2 of find_formplan() --- the '(' node is converted 1678 * to a f_expr node containing the expression and the ')' node is discarded. 1679 * The functions themselves are only used as constants. 1680 */ 1681 1682int 1683f_openparen(PLAN *plan __unused, FTSENT *entry __unused) 1684{ 1685 abort(); 1686} 1687 1688int 1689f_closeparen(PLAN *plan __unused, FTSENT *entry __unused) 1690{ 1691 abort(); 1692} 1693 1694/* c_openparen == c_simple */ 1695/* c_closeparen == c_simple */ 1696 1697/* 1698 * AND operator. Since AND is implicit, no node is allocated. 1699 */ 1700PLAN * 1701c_and(OPTION *option __unused, char ***argvp __unused) 1702{ 1703 return NULL; 1704} 1705 1706/* 1707 * ! expression functions -- 1708 * 1709 * Negation of a primary; the unary NOT operator. 1710 */ 1711int 1712f_not(PLAN *plan, FTSENT *entry) 1713{ 1714 PLAN *p; 1715 int state = 0; 1716 1717 for (p = plan->p_data[0]; 1718 p && (state = (p->execute)(p, entry)); p = p->next); 1719 return !state; 1720} 1721 1722/* c_not == c_simple */ 1723 1724/* 1725 * expression -o expression functions -- 1726 * 1727 * Alternation of primaries; the OR operator. The second expression is 1728 * not evaluated if the first expression is true. 1729 */ 1730int 1731f_or(PLAN *plan, FTSENT *entry) 1732{ 1733 PLAN *p; 1734 int state = 0; 1735 1736 for (p = plan->p_data[0]; 1737 p && (state = (p->execute)(p, entry)); p = p->next); 1738 1739 if (state) 1740 return 1; 1741 1742 for (p = plan->p_data[1]; 1743 p && (state = (p->execute)(p, entry)); p = p->next); 1744 return state; 1745} 1746 1747/* c_or == c_simple */ 1748 1749/* 1750 * -false 1751 * 1752 * Always false. 1753 */ 1754int 1755f_false(PLAN *plan __unused, FTSENT *entry __unused) 1756{ 1757 return 0; 1758} 1759 1760/* c_false == c_simple */ 1761 1762/* 1763 * -quit 1764 * 1765 * Exits the program 1766 */ 1767int 1768f_quit(PLAN *plan __unused, FTSENT *entry __unused) 1769{ 1770 finish_execplus(); 1771 exit(0); 1772} 1773 1774/* c_quit == c_simple */ 1775