/*- * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Cimarron D. Taylor of the University of California, Berkeley. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint #if 0 static const char sccsid[] = "@(#)function.c 8.10 (Berkeley) 5/4/95"; #else static const char rcsid[] = "$FreeBSD: src/usr.bin/find/function.c,v 1.22.2.9 2001/09/19 09:44:24 ru Exp $"; #endif #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "find.h" #ifdef __APPLE__ #include "get_compat.h" #else #define COMPAT_MODE(func, mode) 1 #endif time_t get_date __P((char *date, struct timeb *now)); #define COMPARE(a, b) { \ switch (plan->flags & F_ELG_MASK) { \ case F_EQUAL: \ return (a == b); \ case F_LESSTHAN: \ return (a < b); \ case F_GREATER: \ return (a > b); \ default: \ abort(); \ } \ } static PLAN * palloc(option) OPTION *option; { PLAN *new; if ((new = malloc(sizeof(PLAN))) == NULL) err(1, NULL); new->execute = option->execute; new->flags = option->flags; new->next = NULL; return new; } /* * find_parsenum -- * Parse a string of the form [+-]# and return the value. */ static long long find_parsenum(plan, option, vp, endch) PLAN *plan; char *option, *vp, *endch; { long long value; char *endchar, *str; /* Pointer to character ending conversion. */ /* Determine comparison from leading + or -. */ str = vp; switch (*str) { case '+': ++str; plan->flags |= F_GREATER; break; case '-': ++str; plan->flags |= F_LESSTHAN; break; default: plan->flags |= F_EQUAL; break; } /* * Convert the string with strtoq(). Note, if strtoq() returns zero * and endchar points to the beginning of the string we know we have * a syntax error. */ value = strtoq(str, &endchar, 10); if (value == 0 && endchar == str) errx(1, "%s: %s: illegal numeric value", option, vp); if (endchar[0] && (endch == NULL || endchar[0] != *endch)) errx(1, "%s: %s: illegal trailing character", option, vp); if (endch) *endch = endchar[0]; return value; } /* * nextarg -- * Check that another argument still exists, return a pointer to it, * and increment the argument vector pointer. */ static char * nextarg(option, argvp) OPTION *option; char ***argvp; { char *arg; if ((arg = **argvp) == 0) errx(1, "%s: requires additional arguments", option->name); (*argvp)++; return arg; } /* nextarg() */ /* * The value of n for the inode times (atime, ctime, and mtime) is a range, * i.e. n matches from (n - 1) to n 24 hour periods. This interacts with * -n, such that "-mtime -1" would be less than 0 days, which isn't what the * user wanted. Correct so that -1 is "less than 1". */ #define TIME_CORRECT(p) \ if (((p)->flags & F_ELG_MASK) == F_LESSTHAN) \ ++((p)->t_data); /* * -[acm]min n functions -- * * True if the difference between the * file access time (-amin) * last change of file status information (-cmin) * file modification time (-mmin) * and the current time is n min periods. */ int f_Xmin(plan, entry) PLAN *plan; FTSENT *entry; { extern time_t now; if (plan->flags & F_TIME_C) { COMPARE((now - entry->fts_statp->st_ctime + 60 - 1) / 60, plan->t_data); } else if (plan->flags & F_TIME_A) { COMPARE((now - entry->fts_statp->st_atime + 60 - 1) / 60, plan->t_data); } else { COMPARE((now - entry->fts_statp->st_mtime + 60 - 1) / 60, plan->t_data); } } PLAN * c_Xmin(option, argvp) OPTION *option; char ***argvp; { char *nmins; PLAN *new; nmins = nextarg(option, argvp); ftsoptions &= ~FTS_NOSTAT; new = palloc(option); new->t_data = find_parsenum(new, option->name, nmins, NULL); TIME_CORRECT(new); return new; } /* * -[acm]time n functions -- * * True if the difference between the * file access time (-atime) * last change of file status information (-ctime) * file modification time (-mtime) * and the current time is n 24 hour periods. */ int f_Xtime(plan, entry) PLAN *plan; FTSENT *entry; { extern time_t now; int fudge = COMPAT_MODE("bin/find", "unix2003") ? 0 : 86400 - 1; if (plan->flags & F_TIME_C) { COMPARE((now - entry->fts_statp->st_ctime + fudge) / 86400, plan->t_data); } else if (plan->flags & F_TIME_A) { COMPARE((now - entry->fts_statp->st_atime + fudge) / 86400, plan->t_data); } else { COMPARE((now - entry->fts_statp->st_mtime + fudge) / 86400, plan->t_data); } } PLAN * c_Xtime(option, argvp) OPTION *option; char ***argvp; { char *ndays; PLAN *new; ndays = nextarg(option, argvp); ftsoptions &= ~FTS_NOSTAT; new = palloc(option); new->t_data = find_parsenum(new, option->name, ndays, NULL); TIME_CORRECT(new); return new; } /* * -maxdepth/-mindepth n functions -- * * Does the same as -prune if the level of the current file is * greater/less than the specified maximum/minimum depth. * * Note that -maxdepth and -mindepth are handled specially in * find_execute() so their f_* functions are set to f_always_true(). */ PLAN * c_mXXdepth(option, argvp) OPTION *option; char ***argvp; { char *dstr; PLAN *new; dstr = nextarg(option, argvp); if (dstr[0] == '-') /* all other errors handled by find_parsenum() */ errx(1, "%s: %s: value must be positive", option->name, dstr); new = palloc(option); if (option->flags & F_MAXDEPTH) maxdepth = find_parsenum(new, option->name, dstr, NULL); else mindepth = find_parsenum(new, option->name, dstr, NULL); return new; } /* * -delete functions -- * * True always. Makes its best shot and continues on regardless. */ int f_delete(plan, entry) PLAN *plan; FTSENT *entry; { /* ignore these from fts */ if (strcmp(entry->fts_accpath, ".") == 0 || strcmp(entry->fts_accpath, "..") == 0) return 1; /* sanity check */ if (isdepth == 0 || /* depth off */ (ftsoptions & FTS_NOSTAT) || /* not stat()ing */ !(ftsoptions & FTS_PHYSICAL) || /* physical off */ (ftsoptions & FTS_LOGICAL)) /* or finally, logical on */ errx(1, "-delete: insecure options got turned on"); /* Potentially unsafe - do not accept relative paths whatsoever */ if (strchr(entry->fts_accpath, '/') != NULL) errx(1, "-delete: %s: relative path potentially not safe", entry->fts_accpath); /* Turn off user immutable bits if running as root */ if ((entry->fts_statp->st_flags & (UF_APPEND|UF_IMMUTABLE)) && !(entry->fts_statp->st_flags & (SF_APPEND|SF_IMMUTABLE)) && geteuid() == 0) chflags(entry->fts_accpath, entry->fts_statp->st_flags &= ~(UF_APPEND|UF_IMMUTABLE)); /* rmdir directories, unlink everything else */ if (S_ISDIR(entry->fts_statp->st_mode)) { if (rmdir(entry->fts_accpath) < 0 && errno != ENOTEMPTY) warn("-delete: rmdir(%s)", entry->fts_path); } else { if (unlink(entry->fts_accpath) < 0) warn("-delete: unlink(%s)", entry->fts_path); } /* "succeed" */ return 1; } PLAN * c_delete(option, argvp) OPTION *option; char ***argvp; { ftsoptions &= ~FTS_NOSTAT; /* no optimise */ ftsoptions |= FTS_PHYSICAL; /* disable -follow */ ftsoptions &= ~FTS_LOGICAL; /* disable -follow */ isoutput = 1; /* possible output */ isdepth = 1; /* -depth implied */ return palloc(option); } /* * -depth functions -- * * Always true, causes descent of the directory hierarchy to be done * so that all entries in a directory are acted on before the directory * itself. */ int f_always_true(plan, entry) PLAN *plan; FTSENT *entry; { return 1; } PLAN * c_depth(option, argvp) OPTION *option; char ***argvp; { isdepth = 1; return palloc(option); } /* * -empty functions -- * * True if the file or directory is empty */ int f_empty(plan, entry) PLAN *plan; FTSENT *entry; { if (S_ISREG(entry->fts_statp->st_mode) && entry->fts_statp->st_size == 0) return 1; if (S_ISDIR(entry->fts_statp->st_mode)) { struct dirent *dp; int empty; DIR *dir; empty = 1; dir = opendir(entry->fts_accpath); if (dir == NULL) err(1, "%s", entry->fts_accpath); for (dp = readdir(dir); dp; dp = readdir(dir)) if (dp->d_name[0] != '.' || (dp->d_name[1] != '\0' && (dp->d_name[1] != '.' || dp->d_name[2] != '\0'))) { empty = 0; break; } closedir(dir); return empty; } return 0; } PLAN * c_empty(option, argvp) OPTION *option; char ***argvp; { ftsoptions &= ~FTS_NOSTAT; return palloc(option); } /* * [-exec | -execdir | -ok] utility [arg ... ] ; functions -- * * True if the executed utility returns a zero value as exit status. * The end of the primary expression is delimited by a semicolon. If * "{}" occurs anywhere, it gets replaced by the current pathname, * or, in the case of -execdir, the current basename (filename * without leading directory prefix). For -exec and -ok, * the current directory for the execution of utility is the same as * the current directory when the find utility was started, whereas * for -execdir, it is the directory the file resides in. * * The primary -ok differs from -exec in that it requests affirmation * of the user before executing the utility. */ int f_exec(plan, entry) register PLAN *plan; FTSENT *entry; { extern int dotfd; register int cnt; pid_t pid; int status; char *file = NULL; static char **plus_path = NULL; static int plus_path_cnt = 0; static unsigned long exec_after = 0; static unsigned long path_so_far = 0; struct _ex saved_ex; if (entry) { /* XXX - if file/dir ends in '/' this will not work -- can it? */ if ((plan->flags & F_EXECDIR) && (file = strrchr(entry->fts_path, '/'))) { file++; } else { file = entry->fts_path; } if (plan->flags & F_CLEANUP) { plus_path = realloc(plus_path, sizeof(char *) * ++plus_path_cnt); if (!plus_path) errx(1, "out of memory"); plus_path[plus_path_cnt -1] = strdup(file); if (!plus_path[plus_path_cnt -1]) errx(1, "out of memory"); path_so_far += sizeof(char *) + strlen(file); if (!exec_after) { size_t l = sizeof(exec_after); int rc = sysctlbyname("kern.argmax", &exec_after, &l, NULL, NULL); if (rc < 0) { /* Something conservitave */ exec_after = 16 * 1024; } } if (path_so_far >= exec_after) { return f_exec(plan, NULL); } return 1; } } else { if (!plus_path) return 1; saved_ex = plan->p_un.ex; int new_len = 0; int ocnt; for(cnt = 0; plan->e_argv[cnt]; ++cnt) { if (plan->e_len[cnt]) { new_len += plus_path_cnt; } else { new_len++; } } new_len++; plan->e_argv = malloc(sizeof(char *) * new_len); if (!plan->e_argv) errx(1, "out of memory"); for(ocnt = cnt = 0; saved_ex._e_argv[ocnt]; ++ocnt) { if (saved_ex._e_len[ocnt]) { int ppi; for(ppi = 0; ppi < plus_path_cnt; ++ppi) { plan->e_argv[cnt++] = plus_path[ppi]; } #if 0 memmove(plan->e_argv + cnt, *plus_path, sizeof(char *) * plus_path_cnt); cnt += plus_path_cnt; #endif } else { plan->e_argv[cnt++] = saved_ex._e_argv[ocnt]; } } plan->e_argv[cnt++] = NULL; } if (!(plan->flags & F_CLEANUP)) for (cnt = 0; plan->e_argv[cnt]; ++cnt) if (plan->e_len[cnt]) brace_subst(plan->e_orig[cnt], &plan->e_argv[cnt], file, plan->e_len[cnt]); if ((plan->flags & F_NEEDOK) && !queryuser(plan->e_argv)) return 0; /* make sure find output is interspersed correctly with subprocesses */ fflush(stdout); fflush(stderr); switch (pid = fork()) { case -1: err(1, "fork"); /* NOTREACHED */ case 0: /* change dir back from where we started */ if (!(plan->flags & F_EXECDIR) && fchdir(dotfd)) { warn("chdir"); _exit(1); } execvp(plan->e_argv[0], plan->e_argv); warn("%s", plan->e_argv[0]); _exit(1); } pid = waitpid(pid, &status, 0); if (plus_path) { int i; for(i = 0; i < plus_path_cnt; ++i) { free(plus_path[i]); } free(plus_path); plus_path = NULL; plus_path_cnt = 0; plan->p_un.ex = saved_ex; path_so_far = 0; if (WIFEXITED(status) && WEXITSTATUS(status)) { exit(WEXITSTATUS(status)); } } return (pid != -1 && WIFEXITED(status) && !WEXITSTATUS(status)); } /* * c_exec, c_execdir, c_ok -- * build three parallel arrays, one with pointers to the strings passed * on the command line, one with (possibly duplicated) pointers to the * argv array, and one with integer values that are lengths of the * strings, but also flags meaning that the string has to be massaged. */ PLAN * c_exec(option, argvp) OPTION *option; char ***argvp; { PLAN *new; /* node returned */ register int cnt; register char **argv, **ap, *p; int plus_armed = 0; /* XXX - was in c_execdir, but seems unnecessary!? ftsoptions &= ~FTS_NOSTAT; */ isoutput = 1; /* XXX - this is a change from the previous coding */ new = palloc(option); for (ap = argv = *argvp;; ++ap) { if (!*ap) errx(1, "%s: no terminating \";\"", option->name); if (**ap == '{' && ap[0][1] == '}' && ap[0][2] == '\0') { plus_armed = COMPAT_MODE("bin/find", "unix2003"); continue; } if (**ap == ';') { break; } if (plus_armed && **ap == '+') { new->flags |= F_CLEANUP; break; } plus_armed = 0; } cnt = ap - *argvp + 1; new->e_argv = (char **)emalloc((u_int)cnt * sizeof(char *)); new->e_orig = (char **)emalloc((u_int)cnt * sizeof(char *)); new->e_len = (int *)emalloc((u_int)cnt * sizeof(int)); for (argv = *argvp, cnt = 0; argv < ap; ++argv, ++cnt) { new->e_orig[cnt] = *argv; for (p = *argv; *p; ++p) if (p[0] == '{' && p[1] == '}') { new->e_argv[cnt] = emalloc((u_int)MAXPATHLEN); new->e_len[cnt] = MAXPATHLEN; break; } if (!*p) { new->e_argv[cnt] = *argv; new->e_len[cnt] = 0; } } new->e_argv[cnt] = new->e_orig[cnt] = NULL; *argvp = argv + 1; return new; } int f_flags(plan, entry) PLAN *plan; FTSENT *entry; { u_long flags; flags = entry->fts_statp->st_flags; if (plan->flags & F_ATLEAST) return (flags | plan->fl_flags) == flags && !(flags & plan->fl_notflags); else if (plan->flags & F_ANY) return (flags & plan->fl_flags) || (flags | plan->fl_notflags) != flags; else return flags == plan->fl_flags && !(plan->fl_flags & plan->fl_notflags); } PLAN * c_flags(option, argvp) OPTION *option; char ***argvp; { char *flags_str; PLAN *new; u_long flags, notflags; flags_str = nextarg(option, argvp); ftsoptions &= ~FTS_NOSTAT; new = palloc(option); if (*flags_str == '-') { new->flags |= F_ATLEAST; flags_str++; } else if (*flags_str == '+') { new->flags |= F_ANY; flags_str++; } if (strtofflags(&flags_str, &flags, ¬flags) == 1) errx(1, "%s: %s: illegal flags string", option->name, flags_str); new->fl_flags = flags; new->fl_notflags = notflags; return new; } /* * -follow functions -- * * Always true, causes symbolic links to be followed on a global * basis. */ PLAN * c_follow(option, argvp) OPTION *option; char ***argvp; { ftsoptions &= ~FTS_PHYSICAL; ftsoptions |= FTS_LOGICAL; return palloc(option); } /* * -fstype functions -- * * True if the file is of a certain type. */ int f_fstype(plan, entry) PLAN *plan; FTSENT *entry; { static dev_t curdev; /* need a guaranteed illegal dev value */ static int first = 1; struct statfs sb; static int val_type, val_flags; char *p, save[2]; /* Only check when we cross mount point. */ if (first || curdev != entry->fts_statp->st_dev) { curdev = entry->fts_statp->st_dev; /* * Statfs follows symlinks; find wants the link's file system, * not where it points. */ if (entry->fts_info == FTS_SL || entry->fts_info == FTS_SLNONE) { if ((p = strrchr(entry->fts_accpath, '/')) != NULL) ++p; else p = entry->fts_accpath; save[0] = p[0]; p[0] = '.'; save[1] = p[1]; p[1] = '\0'; } else p = NULL; if (statfs(entry->fts_accpath, &sb)) err(1, "%s", entry->fts_accpath); if (p) { p[0] = save[0]; p[1] = save[1]; } first = 0; /* * Further tests may need both of these values, so * always copy both of them. */ val_flags = sb.f_flags; val_type = sb.f_type; } switch (plan->flags & F_MTMASK) { case F_MTFLAG: return (val_flags & plan->mt_data) != 0; case F_MTTYPE: return (val_type == plan->mt_data); default: abort(); } } #if !defined(__NetBSD__) PLAN * c_fstype(option, argvp) OPTION *option; char ***argvp; { char *fsname; register PLAN *new; struct vfsconf vfc; fsname = nextarg(option, argvp); ftsoptions &= ~FTS_NOSTAT; new = palloc(option); /* * Check first for a filesystem name. */ if (getvfsbyname(fsname, &vfc) == 0) { new->flags |= F_MTTYPE; new->mt_data = vfc.vfc_typenum; return new; } switch (*fsname) { case 'l': if (!strcmp(fsname, "local")) { new->flags |= F_MTFLAG; new->mt_data = MNT_LOCAL; return new; } break; case 'r': if (!strcmp(fsname, "rdonly")) { new->flags |= F_MTFLAG; new->mt_data = MNT_RDONLY; return new; } break; } errx(1, "%s: unknown file type", fsname); /* NOTREACHED */ } #endif /* __NetBSD__ */ /* * -group gname functions -- * * True if the file belongs to the group gname. If gname is numeric and * an equivalent of the getgrnam() function does not return a valid group * name, gname is taken as a group ID. */ int f_group(plan, entry) PLAN *plan; FTSENT *entry; { return entry->fts_statp->st_gid == plan->g_data; } PLAN * c_group(option, argvp) OPTION *option; char ***argvp; { char *gname; PLAN *new; struct group *g; gid_t gid; gname = nextarg(option, argvp); ftsoptions &= ~FTS_NOSTAT; g = getgrnam(gname); if (g == NULL) { gid = atoi(gname); if (gid == 0 && gname[0] != '0') errx(1, "%s: %s: no such group", option->name, gname); } else gid = g->gr_gid; new = palloc(option); new->g_data = gid; return new; } /* * -inum n functions -- * * True if the file has inode # n. */ int f_inum(plan, entry) PLAN *plan; FTSENT *entry; { COMPARE(entry->fts_statp->st_ino, plan->i_data); } PLAN * c_inum(option, argvp) OPTION *option; char ***argvp; { char *inum_str; PLAN *new; inum_str = nextarg(option, argvp); ftsoptions &= ~FTS_NOSTAT; new = palloc(option); new->i_data = find_parsenum(new, option->name, inum_str, NULL); return new; } /* * -links n functions -- * * True if the file has n links. */ int f_links(plan, entry) PLAN *plan; FTSENT *entry; { COMPARE(entry->fts_statp->st_nlink, plan->l_data); } PLAN * c_links(option, argvp) OPTION *option; char ***argvp; { char *nlinks; PLAN *new; nlinks = nextarg(option, argvp); ftsoptions &= ~FTS_NOSTAT; new = palloc(option); new->l_data = (nlink_t)find_parsenum(new, option->name, nlinks, NULL); return new; } /* * -ls functions -- * * Always true - prints the current entry to stdout in "ls" format. */ int f_ls(plan, entry) PLAN *plan; FTSENT *entry; { printlong(entry->fts_path, entry->fts_accpath, entry->fts_statp); return 1; } PLAN * c_ls(option, argvp) OPTION *option; char ***argvp; { ftsoptions &= ~FTS_NOSTAT; isoutput = 1; return palloc(option); } /* * -name functions -- * * True if the basename of the filename being examined * matches pattern using Pattern Matching Notation S3.14 */ int f_name(plan, entry) PLAN *plan; FTSENT *entry; { return !fnmatch(plan->c_data, entry->fts_name, plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); } PLAN * c_name(option, argvp) OPTION *option; char ***argvp; { char *pattern; PLAN *new; pattern = nextarg(option, argvp); new = palloc(option); new->c_data = pattern; return new; } /* * -newer file functions -- * * True if the current file has been modified more recently * then the modification time of the file named by the pathname * file. */ int f_newer(plan, entry) PLAN *plan; FTSENT *entry; { if (plan->flags & F_TIME_C) return entry->fts_statp->st_ctime > plan->t_data; else if (plan->flags & F_TIME_A) return entry->fts_statp->st_atime > plan->t_data; else return entry->fts_statp->st_mtime > plan->t_data; } PLAN * c_newer(option, argvp) OPTION *option; char ***argvp; { char *fn_or_tspec; PLAN *new; struct stat sb; fn_or_tspec = nextarg(option, argvp); ftsoptions &= ~FTS_NOSTAT; new = palloc(option); /* compare against what */ if (option->flags & F_TIME2_T) { new->t_data = get_date(fn_or_tspec, (struct timeb *) 0); if (new->t_data == (time_t) -1) errx(1, "Can't parse date/time: %s", fn_or_tspec); } else { if (stat(fn_or_tspec, &sb)) err(1, "%s", fn_or_tspec); if (option->flags & F_TIME2_C) new->t_data = sb.st_ctime; else if (option->flags & F_TIME2_A) new->t_data = sb.st_atime; else new->t_data = sb.st_mtime; } return new; } /* * -nogroup functions -- * * True if file belongs to a user ID for which the equivalent * of the getgrnam() 9.2.1 [POSIX.1] function returns NULL. */ int f_nogroup(plan, entry) PLAN *plan; FTSENT *entry; { return group_from_gid(entry->fts_statp->st_gid, 1) == NULL; } PLAN * c_nogroup(option, argvp) OPTION *option; char ***argvp; { ftsoptions &= ~FTS_NOSTAT; return palloc(option); } /* * -nouser functions -- * * True if file belongs to a user ID for which the equivalent * of the getpwuid() 9.2.2 [POSIX.1] function returns NULL. */ int f_nouser(plan, entry) PLAN *plan; FTSENT *entry; { return user_from_uid(entry->fts_statp->st_uid, 1) == NULL; } PLAN * c_nouser(option, argvp) OPTION *option; char ***argvp; { ftsoptions &= ~FTS_NOSTAT; return palloc(option); } /* * -path functions -- * * True if the path of the filename being examined * matches pattern using Pattern Matching Notation S3.14 */ int f_path(plan, entry) PLAN *plan; FTSENT *entry; { return !fnmatch(plan->c_data, entry->fts_path, plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0); } /* c_path is the same as c_name */ /* * -perm functions -- * * The mode argument is used to represent file mode bits. If it starts * with a leading digit, it's treated as an octal mode, otherwise as a * symbolic mode. */ int f_perm(plan, entry) PLAN *plan; FTSENT *entry; { mode_t mode; mode = entry->fts_statp->st_mode & (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO); if (plan->flags & F_ATLEAST) return (plan->m_data | mode) == mode; else if (plan->flags & F_ANY) return (mode & plan->m_data); else return mode == plan->m_data; /* NOTREACHED */ } PLAN * c_perm(option, argvp) OPTION *option; char ***argvp; { char *perm; PLAN *new; mode_t *set; perm = nextarg(option, argvp); ftsoptions &= ~FTS_NOSTAT; new = palloc(option); if (*perm == '-') { new->flags |= F_ATLEAST; ++perm; } else if (*perm == '+') { if ((set = setmode(perm +1)) != NULL) { new->flags |= F_ANY; ++perm; free(set); } } if ((set = setmode(perm)) == NULL) errx(1, "%s: %s: illegal mode string", option->name, perm); new->m_data = getmode(set, 0); free(set); return new; } /* * -print functions -- * * Always true, causes the current pathame to be written to * standard output. */ int f_print(plan, entry) PLAN *plan; FTSENT *entry; { (void)puts(entry->fts_path); return 1; } PLAN * c_print(option, argvp) OPTION *option; char ***argvp; { isoutput = 1; return palloc(option); } /* * -print0 functions -- * * Always true, causes the current pathame to be written to * standard output followed by a NUL character */ int f_print0(plan, entry) PLAN *plan; FTSENT *entry; { fputs(entry->fts_path, stdout); fputc('\0', stdout); return 1; } /* c_print0 is the same as c_print */ /* * -prune functions -- * * Prune a portion of the hierarchy. */ int f_prune(plan, entry) PLAN *plan; FTSENT *entry; { extern FTS *tree; if (fts_set(tree, entry, FTS_SKIP)) err(1, "%s", entry->fts_path); return 1; } /* c_prune == c_simple */ /* * -regex functions -- * * True if the whole path of the file matches pattern using * regular expression. */ int f_regex(plan, entry) PLAN *plan; FTSENT *entry; { char *str; size_t len; regex_t *pre; regmatch_t pmatch; int errcode; char errbuf[LINE_MAX]; int matched; pre = plan->re_data; str = entry->fts_path; len = strlen(str); matched = 0; pmatch.rm_so = 0; pmatch.rm_eo = len; errcode = regexec(pre, str, 1, &pmatch, REG_STARTEND); if (errcode != 0 && errcode != REG_NOMATCH) { regerror(errcode, pre, errbuf, sizeof errbuf); errx(1, "%s: %s", plan->flags & F_IGNCASE ? "-iregex" : "-regex", errbuf); } if (errcode == 0 && pmatch.rm_so == 0 && pmatch.rm_eo == len) matched = 1; return matched; } PLAN * c_regex(option, argvp) OPTION *option; char ***argvp; { PLAN *new; char *pattern; regex_t *pre; int errcode; char errbuf[LINE_MAX]; if ((pre = malloc(sizeof(regex_t))) == NULL) err(1, NULL); pattern = nextarg(option, argvp); if ((errcode = regcomp(pre, pattern, regexp_flags | (option->flags & F_IGNCASE ? REG_ICASE : 0))) != 0) { regerror(errcode, pre, errbuf, sizeof errbuf); errx(1, "%s: %s: %s", option->flags & F_IGNCASE ? "-iregex" : "-regex", pattern, errbuf); } new = palloc(option); new->re_data = pre; return new; } /* c_simple covers c_prune, c_openparen, c_closeparen, c_not, c_or */ PLAN * c_simple(option, argvp) OPTION *option; char ***argvp; { return palloc(option); } /* * -size n[c] functions -- * * True if the file size in bytes, divided by an implementation defined * value and rounded up to the next integer, is n. If n is followed by * a c, the size is in bytes. */ #define FIND_SIZE 512 static int divsize = 1; int f_size(plan, entry) PLAN *plan; FTSENT *entry; { off_t size; size = divsize ? (entry->fts_statp->st_size + FIND_SIZE - 1) / FIND_SIZE : entry->fts_statp->st_size; COMPARE(size, plan->o_data); } PLAN * c_size(option, argvp) OPTION *option; char ***argvp; { char *size_str; PLAN *new; char endch; size_str = nextarg(option, argvp); ftsoptions &= ~FTS_NOSTAT; new = palloc(option); endch = 'c'; new->o_data = find_parsenum(new, option->name, size_str, &endch); if (endch == 'c') divsize = 0; return new; } /* * -type c functions -- * * True if the type of the file is c, where c is b, c, d, p, f or w * for block special file, character special file, directory, FIFO, * regular file or whiteout respectively. */ int f_type(plan, entry) PLAN *plan; FTSENT *entry; { return (entry->fts_statp->st_mode & S_IFMT) == plan->m_data; } PLAN * c_type(option, argvp) OPTION *option; char ***argvp; { char *typestring; PLAN *new; mode_t mask; typestring = nextarg(option, argvp); ftsoptions &= ~FTS_NOSTAT; switch (typestring[0]) { case 'b': mask = S_IFBLK; break; case 'c': mask = S_IFCHR; break; case 'd': mask = S_IFDIR; break; case 'f': mask = S_IFREG; break; case 'l': mask = S_IFLNK; break; case 'p': mask = S_IFIFO; break; case 's': mask = S_IFSOCK; break; #ifdef FTS_WHITEOUT case 'w': mask = S_IFWHT; ftsoptions |= FTS_WHITEOUT; break; #endif /* FTS_WHITEOUT */ default: errx(1, "%s: %s: unknown type", option->name, typestring); } new = palloc(option); new->m_data = mask; return new; } /* * -user uname functions -- * * True if the file belongs to the user uname. If uname is numeric and * an equivalent of the getpwnam() S9.2.2 [POSIX.1] function does not * return a valid user name, uname is taken as a user ID. */ int f_user(plan, entry) PLAN *plan; FTSENT *entry; { return entry->fts_statp->st_uid == plan->u_data; } PLAN * c_user(option, argvp) OPTION *option; char ***argvp; { char *username; PLAN *new; struct passwd *p; uid_t uid; username = nextarg(option, argvp); ftsoptions &= ~FTS_NOSTAT; p = getpwnam(username); if (p == NULL) { uid = atoi(username); if (uid == 0 && username[0] != '0') errx(1, "%s: %s: no such user", option->name, username); } else uid = p->pw_uid; new = palloc(option); new->u_data = uid; return new; } /* * -xdev functions -- * * Always true, causes find not to decend past directories that have a * different device ID (st_dev, see stat() S5.6.2 [POSIX.1]) */ PLAN * c_xdev(option, argvp) OPTION *option; char ***argvp; { ftsoptions |= FTS_XDEV; return palloc(option); } /* * ( expression ) functions -- * * True if expression is true. */ int f_expr(plan, entry) PLAN *plan; FTSENT *entry; { register PLAN *p; register int state = 0; for (p = plan->p_data[0]; p && (state = (p->execute)(p, entry)); p = p->next); return state; } /* * f_openparen and f_closeparen nodes are temporary place markers. They are * eliminated during phase 2 of find_formplan() --- the '(' node is converted * to a f_expr node containing the expression and the ')' node is discarded. * The functions themselves are only used as constants. */ int f_openparen(plan, entry) PLAN *plan; FTSENT *entry; { abort(); } int f_closeparen(plan, entry) PLAN *plan; FTSENT *entry; { abort(); } /* c_openparen == c_simple */ /* c_closeparen == c_simple */ /* * AND operator. Since AND is implicit, no node is allocated. */ PLAN * c_and(option, argvp) OPTION *option; char ***argvp; { return NULL; } /* * ! expression functions -- * * Negation of a primary; the unary NOT operator. */ int f_not(plan, entry) PLAN *plan; FTSENT *entry; { register PLAN *p; register int state = 0; for (p = plan->p_data[0]; p && (state = (p->execute)(p, entry)); p = p->next); return !state; } /* c_not == c_simple */ /* * expression -o expression functions -- * * Alternation of primaries; the OR operator. The second expression is * not evaluated if the first expression is true. */ int f_or(plan, entry) PLAN *plan; FTSENT *entry; { register PLAN *p; register int state = 0; for (p = plan->p_data[0]; p && (state = (p->execute)(p, entry)); p = p->next); if (state) return 1; for (p = plan->p_data[1]; p && (state = (p->execute)(p, entry)); p = p->next); return state; } /* c_or == c_simple */