1105 lines
21 KiB
C
1105 lines
21 KiB
C
/* $NetBSD: function.c,v 1.21 1997/10/19 11:52:32 lukem Exp $ */
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/*-
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Cimarron D. Taylor of the University of California, Berkeley.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "from: @(#)function.c 8.1 (Berkeley) 6/6/93";
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#else
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__RCSID("$NetBSD: function.c,v 1.21 1997/10/19 11:52:32 lukem Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/ucred.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <sys/mount.h>
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#include <err.h>
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#include <errno.h>
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#include <fnmatch.h>
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#include <fts.h>
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#include <grp.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <tzfile.h>
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#include <unistd.h>
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#include "find.h"
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#define COMPARE(a, b) { \
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switch (plan->flags) { \
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case F_EQUAL: \
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return (a == b); \
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case F_LESSTHAN: \
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return (a < b); \
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case F_GREATER: \
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return (a > b); \
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default: \
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abort(); \
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} \
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}
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static long find_parsenum __P((PLAN *, char *, char *, char *));
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int f_always_true __P((PLAN *, FTSENT *));
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int f_atime __P((PLAN *, FTSENT *));
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int f_ctime __P((PLAN *, FTSENT *));
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int f_exec __P((PLAN *, FTSENT *));
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int f_fstype __P((PLAN *, FTSENT *));
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int f_group __P((PLAN *, FTSENT *));
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int f_inum __P((PLAN *, FTSENT *));
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int f_links __P((PLAN *, FTSENT *));
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int f_ls __P((PLAN *, FTSENT *));
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int f_mtime __P((PLAN *, FTSENT *));
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int f_name __P((PLAN *, FTSENT *));
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int f_newer __P((PLAN *, FTSENT *));
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int f_nogroup __P((PLAN *, FTSENT *));
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int f_nouser __P((PLAN *, FTSENT *));
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int f_path __P((PLAN *, FTSENT *));
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int f_perm __P((PLAN *, FTSENT *));
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int f_print __P((PLAN *, FTSENT *));
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int f_print0 __P((PLAN *, FTSENT *));
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int f_prune __P((PLAN *, FTSENT *));
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int f_size __P((PLAN *, FTSENT *));
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int f_type __P((PLAN *, FTSENT *));
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int f_user __P((PLAN *, FTSENT *));
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int f_not __P((PLAN *, FTSENT *));
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int f_or __P((PLAN *, FTSENT *));
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static PLAN *palloc __P((enum ntype, int (*) __P((PLAN *, FTSENT *))));
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/*
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* find_parsenum --
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* Parse a string of the form [+-]# and return the value.
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*/
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static long
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find_parsenum(plan, option, vp, endch)
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PLAN *plan;
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char *option, *vp, *endch;
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{
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long value;
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char *endchar, *str; /* Pointer to character ending conversion. */
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/* Determine comparison from leading + or -. */
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str = vp;
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switch (*str) {
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case '+':
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++str;
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plan->flags = F_GREATER;
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break;
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case '-':
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++str;
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plan->flags = F_LESSTHAN;
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break;
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default:
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plan->flags = F_EQUAL;
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break;
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}
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/*
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* Convert the string with strtol(). Note, if strtol() returns zero
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* and endchar points to the beginning of the string we know we have
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* a syntax error.
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*/
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value = strtol(str, &endchar, 10);
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if (value == 0 && endchar == str)
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errx(1, "%s: %s: illegal numeric value", option, vp);
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if (endchar[0] && (endch == NULL || endchar[0] != *endch))
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errx(1, "%s: %s: illegal trailing character", option, vp);
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if (endch)
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*endch = endchar[0];
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return (value);
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}
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/*
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* The value of n for the inode times (atime, ctime, and mtime) is a range,
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* i.e. n matches from (n - 1) to n 24 hour periods. This interacts with
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* -n, such that "-mtime -1" would be less than 0 days, which isn't what the
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* user wanted. Correct so that -1 is "less than 1".
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*/
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#define TIME_CORRECT(p, ttype) \
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if ((p)->type == ttype && (p)->flags == F_LESSTHAN) \
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++((p)->t_data);
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/*
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* -atime n functions --
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*
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* True if the difference between the file access time and the
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* current time is n 24 hour periods.
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*/
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int
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f_atime(plan, entry)
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PLAN *plan;
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FTSENT *entry;
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{
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extern time_t now;
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COMPARE((now - entry->fts_statp->st_atime +
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SECSPERDAY - 1) / SECSPERDAY, plan->t_data);
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}
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PLAN *
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c_atime(arg)
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char *arg;
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{
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PLAN *new;
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ftsoptions &= ~FTS_NOSTAT;
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new = palloc(N_ATIME, f_atime);
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new->t_data = find_parsenum(new, "-atime", arg, NULL);
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TIME_CORRECT(new, N_ATIME);
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return (new);
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}
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/*
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* -ctime n functions --
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*
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* True if the difference between the last change of file
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* status information and the current time is n 24 hour periods.
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*/
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int
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f_ctime(plan, entry)
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PLAN *plan;
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FTSENT *entry;
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{
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extern time_t now;
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COMPARE((now - entry->fts_statp->st_ctime +
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SECSPERDAY - 1) / SECSPERDAY, plan->t_data);
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}
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PLAN *
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c_ctime(arg)
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char *arg;
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{
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PLAN *new;
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ftsoptions &= ~FTS_NOSTAT;
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new = palloc(N_CTIME, f_ctime);
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new->t_data = find_parsenum(new, "-ctime", arg, NULL);
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TIME_CORRECT(new, N_CTIME);
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return (new);
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}
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/*
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* -depth functions --
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*
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* Always true, causes descent of the directory hierarchy to be done
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* so that all entries in a directory are acted on before the directory
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* itself.
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*/
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int
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f_always_true(plan, entry)
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PLAN *plan;
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FTSENT *entry;
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{
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return (1);
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}
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PLAN *
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c_depth()
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{
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isdepth = 1;
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return (palloc(N_DEPTH, f_always_true));
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}
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/*
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* [-exec | -ok] utility [arg ... ] ; functions --
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*
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* True if the executed utility returns a zero value as exit status.
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* The end of the primary expression is delimited by a semicolon. If
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* "{}" occurs anywhere, it gets replaced by the current pathname.
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* The current directory for the execution of utility is the same as
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* the current directory when the find utility was started.
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*
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* The primary -ok is different in that it requests affirmation of the
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* user before executing the utility.
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*/
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int
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f_exec(plan, entry)
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PLAN *plan;
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FTSENT *entry;
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{
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extern int dotfd;
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int cnt;
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pid_t pid;
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int status;
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for (cnt = 0; plan->e_argv[cnt]; ++cnt)
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if (plan->e_len[cnt])
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brace_subst(plan->e_orig[cnt], &plan->e_argv[cnt],
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entry->fts_path, plan->e_len[cnt]);
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if (plan->flags == F_NEEDOK && !queryuser(plan->e_argv))
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return (0);
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/* don't mix output of command with find output */
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fflush(stdout);
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fflush(stderr);
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switch (pid = vfork()) {
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case -1:
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err(1, "fork");
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/* NOTREACHED */
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case 0:
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if (fchdir(dotfd)) {
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warn("chdir");
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_exit(1);
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}
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execvp(plan->e_argv[0], plan->e_argv);
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warn("%s", plan->e_argv[0]);
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_exit(1);
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}
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pid = waitpid(pid, &status, 0);
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return (pid != -1 && WIFEXITED(status) && !WEXITSTATUS(status));
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}
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/*
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* c_exec --
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* build three parallel arrays, one with pointers to the strings passed
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* on the command line, one with (possibly duplicated) pointers to the
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* argv array, and one with integer values that are lengths of the
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* strings, but also flags meaning that the string has to be massaged.
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*/
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PLAN *
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c_exec(argvp, isok)
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char ***argvp;
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int isok;
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{
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PLAN *new; /* node returned */
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int cnt;
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char **argv, **ap, *p;
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isoutput = 1;
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new = palloc(N_EXEC, f_exec);
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if (isok)
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new->flags = F_NEEDOK;
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for (ap = argv = *argvp;; ++ap) {
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if (!*ap)
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errx(1,
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"%s: no terminating \";\"", isok ? "-ok" : "-exec");
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if (**ap == ';')
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break;
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}
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cnt = ap - *argvp + 1;
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new->e_argv = (char **)emalloc((u_int)cnt * sizeof(char *));
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new->e_orig = (char **)emalloc((u_int)cnt * sizeof(char *));
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new->e_len = (int *)emalloc((u_int)cnt * sizeof(int));
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for (argv = *argvp, cnt = 0; argv < ap; ++argv, ++cnt) {
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new->e_orig[cnt] = *argv;
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for (p = *argv; *p; ++p)
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if (p[0] == '{' && p[1] == '}') {
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new->e_argv[cnt] = emalloc((u_int)MAXPATHLEN);
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new->e_len[cnt] = MAXPATHLEN;
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break;
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}
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if (!*p) {
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new->e_argv[cnt] = *argv;
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new->e_len[cnt] = 0;
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}
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}
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new->e_argv[cnt] = new->e_orig[cnt] = NULL;
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*argvp = argv + 1;
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return (new);
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}
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/*
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* -follow functions --
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*
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* Always true, causes symbolic links to be followed on a global
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* basis.
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*/
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PLAN *
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c_follow()
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{
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ftsoptions &= ~FTS_PHYSICAL;
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ftsoptions |= FTS_LOGICAL;
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return (palloc(N_FOLLOW, f_always_true));
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}
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/*
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* -fstype functions --
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*
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* True if the file is of a certain type.
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*/
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int
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f_fstype(plan, entry)
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PLAN *plan;
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FTSENT *entry;
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{
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static dev_t curdev; /* need a guaranteed illegal dev value */
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static int first = 1;
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struct statfs sb;
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static short val;
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static char fstype[MFSNAMELEN];
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char *p, save[2];
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/* Only check when we cross mount point. */
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if (first || curdev != entry->fts_statp->st_dev) {
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curdev = entry->fts_statp->st_dev;
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/*
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* Statfs follows symlinks; find wants the link's file system,
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* not where it points.
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*/
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if (entry->fts_info == FTS_SL ||
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entry->fts_info == FTS_SLNONE) {
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if ((p = strrchr(entry->fts_accpath, '/')) != NULL)
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++p;
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else
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p = entry->fts_accpath;
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save[0] = p[0];
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p[0] = '.';
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save[1] = p[1];
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p[1] = '\0';
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} else
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p = NULL;
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if (statfs(entry->fts_accpath, &sb))
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err(1, "%s", entry->fts_accpath);
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if (p) {
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p[0] = save[0];
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p[1] = save[1];
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}
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first = 0;
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/*
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* Further tests may need both of these values, so
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* always copy both of them.
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*/
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val = sb.f_flags;
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strncpy(fstype, sb.f_fstypename, MFSNAMELEN);
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}
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switch (plan->flags) {
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case F_MTFLAG:
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return (val & plan->mt_data);
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case F_MTTYPE:
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return (strncmp(fstype, plan->c_data, MFSNAMELEN) == 0);
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default:
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abort();
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}
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}
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PLAN *
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c_fstype(arg)
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char *arg;
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{
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PLAN *new;
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ftsoptions &= ~FTS_NOSTAT;
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new = palloc(N_FSTYPE, f_fstype);
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switch (*arg) {
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case 'l':
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if (!strcmp(arg, "local")) {
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new->flags = F_MTFLAG;
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new->mt_data = MNT_LOCAL;
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return (new);
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}
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break;
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case 'r':
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if (!strcmp(arg, "rdonly")) {
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new->flags = F_MTFLAG;
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new->mt_data = MNT_RDONLY;
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return (new);
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}
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break;
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}
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new->flags = F_MTTYPE;
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new->c_data = arg;
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return (new);
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}
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/*
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* -group gname functions --
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*
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* True if the file belongs to the group gname. If gname is numeric and
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* an equivalent of the getgrnam() function does not return a valid group
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* name, gname is taken as a group ID.
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*/
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int
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f_group(plan, entry)
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PLAN *plan;
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FTSENT *entry;
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{
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return (entry->fts_statp->st_gid == plan->g_data);
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}
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PLAN *
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c_group(gname)
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char *gname;
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{
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PLAN *new;
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struct group *g;
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gid_t gid;
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ftsoptions &= ~FTS_NOSTAT;
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g = getgrnam(gname);
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if (g == NULL) {
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gid = atoi(gname);
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if (gid == 0 && gname[0] != '0')
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errx(1, "-group: %s: no such group", gname);
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} else
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gid = g->gr_gid;
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new = palloc(N_GROUP, f_group);
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new->g_data = gid;
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return (new);
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}
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|
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/*
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* -inum n functions --
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*
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* True if the file has inode # n.
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*/
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int
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f_inum(plan, entry)
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PLAN *plan;
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FTSENT *entry;
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{
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COMPARE(entry->fts_statp->st_ino, plan->i_data);
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}
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PLAN *
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c_inum(arg)
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char *arg;
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{
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PLAN *new;
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ftsoptions &= ~FTS_NOSTAT;
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new = palloc(N_INUM, f_inum);
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new->i_data = find_parsenum(new, "-inum", arg, NULL);
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return (new);
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}
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/*
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* -links n functions --
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*
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* True if the file has n links.
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*/
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int
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f_links(plan, entry)
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PLAN *plan;
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FTSENT *entry;
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{
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COMPARE(entry->fts_statp->st_nlink, plan->l_data);
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}
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PLAN *
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c_links(arg)
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char *arg;
|
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{
|
|
PLAN *new;
|
|
|
|
ftsoptions &= ~FTS_NOSTAT;
|
|
|
|
new = palloc(N_LINKS, f_links);
|
|
new->l_data = (nlink_t)find_parsenum(new, "-links", arg, 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()
|
|
{
|
|
ftsoptions &= ~FTS_NOSTAT;
|
|
isoutput = 1;
|
|
|
|
return (palloc(N_LS, f_ls));
|
|
}
|
|
|
|
/*
|
|
* -mtime n functions --
|
|
*
|
|
* True if the difference between the file modification time and the
|
|
* current time is n 24 hour periods.
|
|
*/
|
|
int
|
|
f_mtime(plan, entry)
|
|
PLAN *plan;
|
|
FTSENT *entry;
|
|
{
|
|
extern time_t now;
|
|
|
|
COMPARE((now - entry->fts_statp->st_mtime + SECSPERDAY - 1) /
|
|
SECSPERDAY, plan->t_data);
|
|
}
|
|
|
|
PLAN *
|
|
c_mtime(arg)
|
|
char *arg;
|
|
{
|
|
PLAN *new;
|
|
|
|
ftsoptions &= ~FTS_NOSTAT;
|
|
|
|
new = palloc(N_MTIME, f_mtime);
|
|
new->t_data = find_parsenum(new, "-mtime", arg, NULL);
|
|
TIME_CORRECT(new, N_MTIME);
|
|
return (new);
|
|
}
|
|
|
|
/*
|
|
* -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, 0));
|
|
}
|
|
|
|
PLAN *
|
|
c_name(pattern)
|
|
char *pattern;
|
|
{
|
|
PLAN *new;
|
|
|
|
new = palloc(N_NAME, f_name);
|
|
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;
|
|
{
|
|
return (entry->fts_statp->st_mtime > plan->t_data);
|
|
}
|
|
|
|
PLAN *
|
|
c_newer(filename)
|
|
char *filename;
|
|
{
|
|
PLAN *new;
|
|
struct stat sb;
|
|
|
|
ftsoptions &= ~FTS_NOSTAT;
|
|
|
|
if (stat(filename, &sb))
|
|
err(1, "%s", filename);
|
|
new = palloc(N_NEWER, f_newer);
|
|
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) ? 0 : 1);
|
|
}
|
|
|
|
PLAN *
|
|
c_nogroup()
|
|
{
|
|
ftsoptions &= ~FTS_NOSTAT;
|
|
|
|
return (palloc(N_NOGROUP, f_nogroup));
|
|
}
|
|
|
|
/*
|
|
* -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) ? 0 : 1);
|
|
}
|
|
|
|
PLAN *
|
|
c_nouser()
|
|
{
|
|
ftsoptions &= ~FTS_NOSTAT;
|
|
|
|
return (palloc(N_NOUSER, f_nouser));
|
|
}
|
|
|
|
/*
|
|
* -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, 0));
|
|
}
|
|
|
|
PLAN *
|
|
c_path(pattern)
|
|
char *pattern;
|
|
{
|
|
PLAN *new;
|
|
|
|
new = palloc(N_NAME, f_path);
|
|
new->c_data = pattern;
|
|
return (new);
|
|
}
|
|
|
|
/*
|
|
* -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
|
|
return (mode == plan->m_data);
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
PLAN *
|
|
c_perm(perm)
|
|
char *perm;
|
|
{
|
|
PLAN *new;
|
|
mode_t *set;
|
|
|
|
ftsoptions &= ~FTS_NOSTAT;
|
|
|
|
new = palloc(N_PERM, f_perm);
|
|
|
|
if (*perm == '-') {
|
|
new->flags = F_ATLEAST;
|
|
++perm;
|
|
}
|
|
|
|
if ((set = setmode(perm)) == NULL)
|
|
err(1, "-perm: %s: illegal mode string", perm);
|
|
|
|
new->m_data = getmode(set, 0);
|
|
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)printf("%s\n", entry->fts_path);
|
|
return(1);
|
|
}
|
|
|
|
int
|
|
f_print0(plan, entry)
|
|
PLAN *plan;
|
|
FTSENT *entry;
|
|
{
|
|
(void)fputs(entry->fts_path, stdout);
|
|
(void)fputc('\0', stdout);
|
|
return(1);
|
|
}
|
|
|
|
PLAN *
|
|
c_print()
|
|
{
|
|
isoutput = 1;
|
|
|
|
return(palloc(N_PRINT, f_print));
|
|
}
|
|
|
|
PLAN *
|
|
c_print0()
|
|
{
|
|
isoutput = 1;
|
|
|
|
return(palloc(N_PRINT0, f_print0));
|
|
}
|
|
|
|
/*
|
|
* -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);
|
|
}
|
|
|
|
PLAN *
|
|
c_prune()
|
|
{
|
|
return (palloc(N_PRUNE, f_prune));
|
|
}
|
|
|
|
/*
|
|
* -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(arg)
|
|
char *arg;
|
|
{
|
|
PLAN *new;
|
|
char endch;
|
|
|
|
ftsoptions &= ~FTS_NOSTAT;
|
|
|
|
new = palloc(N_SIZE, f_size);
|
|
endch = 'c';
|
|
new->o_data = find_parsenum(new, "-size", arg, &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, or f for
|
|
* block special file, character special file, directory, FIFO, or
|
|
* regular file, respectively.
|
|
*/
|
|
int
|
|
f_type(plan, entry)
|
|
PLAN *plan;
|
|
FTSENT *entry;
|
|
{
|
|
return ((entry->fts_statp->st_mode & S_IFMT) == plan->m_data);
|
|
}
|
|
|
|
PLAN *
|
|
c_type(typestring)
|
|
char *typestring;
|
|
{
|
|
PLAN *new;
|
|
mode_t mask;
|
|
|
|
ftsoptions &= ~FTS_NOSTAT;
|
|
|
|
switch (typestring[0]) {
|
|
#ifdef S_IFWHT
|
|
case 'W':
|
|
#ifdef FTS_WHITEOUT
|
|
ftsoptions |= FTS_WHITEOUT;
|
|
#endif
|
|
mask = S_IFWHT;
|
|
break;
|
|
#endif
|
|
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;
|
|
default:
|
|
errx(1, "-type: %s: unknown type", typestring);
|
|
}
|
|
|
|
new = palloc(N_TYPE, f_type);
|
|
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(username)
|
|
char *username;
|
|
{
|
|
PLAN *new;
|
|
struct passwd *p;
|
|
uid_t uid;
|
|
|
|
ftsoptions &= ~FTS_NOSTAT;
|
|
|
|
p = getpwnam(username);
|
|
if (p == NULL) {
|
|
uid = atoi(username);
|
|
if (uid == 0 && username[0] != '0')
|
|
errx(1, "-user: %s: no such user", username);
|
|
} else
|
|
uid = p->pw_uid;
|
|
|
|
new = palloc(N_USER, f_user);
|
|
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()
|
|
{
|
|
ftsoptions |= FTS_XDEV;
|
|
|
|
return (palloc(N_XDEV, f_always_true));
|
|
}
|
|
|
|
/*
|
|
* ( expression ) functions --
|
|
*
|
|
* True if expression is true.
|
|
*/
|
|
int
|
|
f_expr(plan, entry)
|
|
PLAN *plan;
|
|
FTSENT *entry;
|
|
{
|
|
PLAN *p;
|
|
int state;
|
|
|
|
state = 0;
|
|
for (p = plan->p_data[0];
|
|
p && (state = (p->eval)(p, entry)); p = p->next);
|
|
return (state);
|
|
}
|
|
|
|
/*
|
|
* N_OPENPAREN and N_CLOSEPAREN nodes are temporary place markers. They are
|
|
* eliminated during phase 2 of find_formplan() --- the '(' node is converted
|
|
* to a N_EXPR node containing the expression and the ')' node is discarded.
|
|
*/
|
|
PLAN *
|
|
c_openparen()
|
|
{
|
|
return (palloc(N_OPENPAREN, (int (*) __P((PLAN *, FTSENT *)))-1));
|
|
}
|
|
|
|
PLAN *
|
|
c_closeparen()
|
|
{
|
|
return (palloc(N_CLOSEPAREN, (int (*) __P((PLAN *, FTSENT *)))-1));
|
|
}
|
|
|
|
/*
|
|
* ! expression functions --
|
|
*
|
|
* Negation of a primary; the unary NOT operator.
|
|
*/
|
|
int
|
|
f_not(plan, entry)
|
|
PLAN *plan;
|
|
FTSENT *entry;
|
|
{
|
|
PLAN *p;
|
|
int state;
|
|
|
|
state = 0;
|
|
for (p = plan->p_data[0];
|
|
p && (state = (p->eval)(p, entry)); p = p->next);
|
|
return (!state);
|
|
}
|
|
|
|
PLAN *
|
|
c_not()
|
|
{
|
|
return (palloc(N_NOT, f_not));
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
{
|
|
PLAN *p;
|
|
int state;
|
|
|
|
state = 0;
|
|
for (p = plan->p_data[0];
|
|
p && (state = (p->eval)(p, entry)); p = p->next);
|
|
|
|
if (state)
|
|
return (1);
|
|
|
|
for (p = plan->p_data[1];
|
|
p && (state = (p->eval)(p, entry)); p = p->next);
|
|
return (state);
|
|
}
|
|
|
|
PLAN *
|
|
c_or()
|
|
{
|
|
return (palloc(N_OR, f_or));
|
|
}
|
|
|
|
static PLAN *
|
|
palloc(t, f)
|
|
enum ntype t;
|
|
int (*f) __P((PLAN *, FTSENT *));
|
|
{
|
|
PLAN *new;
|
|
|
|
if ((new = malloc(sizeof(PLAN))) != NULL) {
|
|
new->type = t;
|
|
new->eval = f;
|
|
new->flags = 0;
|
|
new->next = NULL;
|
|
return (new);
|
|
}
|
|
err(1, "malloc");
|
|
/* NOTREACHED */
|
|
}
|