not on the top-level -and sequence, e.g. inside of ! or -or. Create a separate linked list of all active -exec {} + primaries and do the last execution for all at termination. PR: bin/79263 Submitted by: Jilles Tjoelker <jilles@stack.nl> MFC after: 7 days
1598 lines
34 KiB
C
1598 lines
34 KiB
C
/*-
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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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#ifndef lint
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#if 0
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static const char sccsid[] = "@(#)function.c 8.10 (Berkeley) 5/4/95";
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#endif
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#endif /* not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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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/types.h>
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#include <sys/acl.h>
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#include <sys/wait.h>
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#include <sys/mount.h>
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#include <sys/timeb.h>
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#include <dirent.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 <limits.h>
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#include <pwd.h>
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#include <regex.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 <unistd.h>
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#include <ctype.h>
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#include "find.h"
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static PLAN *palloc(OPTION *);
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static long long find_parsenum(PLAN *, const char *, char *, char *);
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static long long find_parsetime(PLAN *, const char *, char *);
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static char *nextarg(OPTION *, char ***);
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extern char **environ;
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static PLAN *lastexecplus = NULL;
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#define COMPARE(a, b) do { \
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switch (plan->flags & F_ELG_MASK) { \
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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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} while(0)
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static PLAN *
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palloc(OPTION *option)
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{
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PLAN *new;
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|
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|
if ((new = malloc(sizeof(PLAN))) == NULL)
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err(1, NULL);
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new->execute = option->execute;
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new->flags = option->flags;
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new->next = NULL;
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return new;
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}
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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 long
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find_parsenum(PLAN *plan, const char *option, char *vp, char *endch)
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{
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long 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 strtoq(). Note, if strtoq() 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 = strtoq(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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* find_parsetime --
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* Parse a string of the form [+-]([0-9]+[smhdw]?)+ and return the value.
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*/
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static long long
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find_parsetime(PLAN *plan, const char *option, char *vp)
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{
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long long secs, value;
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char *str, *unit; /* 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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value = strtoq(str, &unit, 10);
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if (value == 0 && unit == str) {
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errx(1, "%s: %s: illegal time value", option, vp);
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/* NOTREACHED */
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}
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if (*unit == '\0')
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return value;
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/* Units syntax. */
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secs = 0;
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for (;;) {
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switch(*unit) {
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case 's': /* seconds */
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secs += value;
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break;
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case 'm': /* minutes */
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secs += value * 60;
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break;
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case 'h': /* hours */
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secs += value * 3600;
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break;
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case 'd': /* days */
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secs += value * 86400;
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break;
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case 'w': /* weeks */
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secs += value * 604800;
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break;
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default:
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errx(1, "%s: %s: bad unit '%c'", option, vp, *unit);
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/* NOTREACHED */
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}
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str = unit + 1;
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if (*str == '\0') /* EOS */
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break;
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value = strtoq(str, &unit, 10);
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if (value == 0 && unit == str) {
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errx(1, "%s: %s: illegal time value", option, vp);
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/* NOTREACHED */
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}
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if (*unit == '\0') {
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errx(1, "%s: %s: missing trailing unit", option, vp);
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/* NOTREACHED */
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}
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}
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plan->flags |= F_EXACTTIME;
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return secs;
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}
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/*
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* nextarg --
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* Check that another argument still exists, return a pointer to it,
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* and increment the argument vector pointer.
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*/
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static char *
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nextarg(OPTION *option, char ***argvp)
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{
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char *arg;
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if ((arg = **argvp) == 0)
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errx(1, "%s: requires additional arguments", option->name);
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(*argvp)++;
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return arg;
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} /* nextarg() */
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/*
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* The value of n for the inode times (atime, birthtime, ctime, mtime) is a
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* range, i.e. n matches from (n - 1) to n 24 hour periods. This interacts
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* with -n, such that "-mtime -1" would be less than 0 days, which isn't what
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* the user wanted. Correct so that -1 is "less than 1".
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*/
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#define TIME_CORRECT(p) \
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if (((p)->flags & F_ELG_MASK) == F_LESSTHAN) \
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++((p)->t_data);
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/*
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* -[acm]min n functions --
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*
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* True if the difference between the
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* file access time (-amin)
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* file birth time (-Bmin)
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* last change of file status information (-cmin)
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* file modification time (-mmin)
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* and the current time is n min periods.
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*/
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int
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f_Xmin(PLAN *plan, FTSENT *entry)
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{
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if (plan->flags & F_TIME_C) {
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COMPARE((now - entry->fts_statp->st_ctime +
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60 - 1) / 60, plan->t_data);
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} else if (plan->flags & F_TIME_A) {
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COMPARE((now - entry->fts_statp->st_atime +
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60 - 1) / 60, plan->t_data);
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} else if (plan->flags & F_TIME_B) {
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COMPARE((now - entry->fts_statp->st_birthtime +
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60 - 1) / 60, plan->t_data);
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} else {
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COMPARE((now - entry->fts_statp->st_mtime +
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60 - 1) / 60, plan->t_data);
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}
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}
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PLAN *
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c_Xmin(OPTION *option, char ***argvp)
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{
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char *nmins;
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PLAN *new;
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nmins = nextarg(option, argvp);
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ftsoptions &= ~FTS_NOSTAT;
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new = palloc(option);
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new->t_data = find_parsenum(new, option->name, nmins, NULL);
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TIME_CORRECT(new);
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return new;
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}
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/*
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* -[acm]time n functions --
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*
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* True if the difference between the
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* file access time (-atime)
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* file birth time (-Btime)
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* last change of file status information (-ctime)
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* file modification time (-mtime)
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* and the current time is n 24 hour periods.
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*/
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int
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f_Xtime(PLAN *plan, FTSENT *entry)
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{
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time_t xtime;
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if (plan->flags & F_TIME_A)
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xtime = entry->fts_statp->st_atime;
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else if (plan->flags & F_TIME_B)
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xtime = entry->fts_statp->st_birthtime;
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else if (plan->flags & F_TIME_C)
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xtime = entry->fts_statp->st_ctime;
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else
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xtime = entry->fts_statp->st_mtime;
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if (plan->flags & F_EXACTTIME)
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COMPARE(now - xtime, plan->t_data);
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else
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COMPARE((now - xtime + 86400 - 1) / 86400, plan->t_data);
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}
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PLAN *
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c_Xtime(OPTION *option, char ***argvp)
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{
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char *value;
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PLAN *new;
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value = nextarg(option, argvp);
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ftsoptions &= ~FTS_NOSTAT;
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new = palloc(option);
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new->t_data = find_parsetime(new, option->name, value);
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if (!(new->flags & F_EXACTTIME))
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TIME_CORRECT(new);
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return new;
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}
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|
|
/*
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|
* -maxdepth/-mindepth n functions --
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|
*
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* Does the same as -prune if the level of the current file is
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* greater/less than the specified maximum/minimum depth.
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*
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|
* Note that -maxdepth and -mindepth are handled specially in
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* find_execute() so their f_* functions are set to f_always_true().
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*/
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PLAN *
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c_mXXdepth(OPTION *option, char ***argvp)
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{
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char *dstr;
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PLAN *new;
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dstr = nextarg(option, argvp);
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if (dstr[0] == '-')
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/* all other errors handled by find_parsenum() */
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errx(1, "%s: %s: value must be positive", option->name, dstr);
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new = palloc(option);
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if (option->flags & F_MAXDEPTH)
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maxdepth = find_parsenum(new, option->name, dstr, NULL);
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else
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mindepth = find_parsenum(new, option->name, dstr, NULL);
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return new;
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}
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|
/*
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* -acl function --
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*
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* Show files with EXTENDED ACL attributes.
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*/
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int
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f_acl(PLAN *plan __unused, FTSENT *entry)
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{
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int match, entries;
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acl_entry_t ae;
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acl_t facl;
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if (S_ISLNK(entry->fts_statp->st_mode))
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return 0;
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if ((match = pathconf(entry->fts_accpath, _PC_ACL_EXTENDED)) <= 0) {
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if (match < 0 && errno != EINVAL)
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warn("%s", entry->fts_accpath);
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else
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return 0;
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}
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match = 0;
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if ((facl = acl_get_file(entry->fts_accpath,ACL_TYPE_ACCESS)) != NULL) {
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if (acl_get_entry(facl, ACL_FIRST_ENTRY, &ae) == 1) {
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/*
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|
* POSIX.1e requires that ACLs of type ACL_TYPE_ACCESS
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* must have at least three entries (owner, group,
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* other).
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*/
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entries = 1;
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while (acl_get_entry(facl, ACL_NEXT_ENTRY, &ae) == 1) {
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if (++entries > 3) {
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match = 1;
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break;
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}
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}
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}
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acl_free(facl);
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} else
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warn("%s", entry->fts_accpath);
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return match;
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}
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|
PLAN *
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c_acl(OPTION *option, char ***argvp __unused)
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{
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ftsoptions &= ~FTS_NOSTAT;
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return (palloc(option));
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}
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|
|
/*
|
|
* -delete functions --
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|
*
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|
* True always. Makes its best shot and continues on regardless.
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|
*/
|
|
int
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|
f_delete(PLAN *plan __unused, FTSENT *entry)
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|
{
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|
/* ignore these from fts */
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|
if (strcmp(entry->fts_accpath, ".") == 0 ||
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|
strcmp(entry->fts_accpath, "..") == 0)
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return 1;
|
|
|
|
/* sanity check */
|
|
if (isdepth == 0 || /* depth off */
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(ftsoptions & FTS_NOSTAT) || /* not stat()ing */
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!(ftsoptions & FTS_PHYSICAL) || /* physical off */
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|
(ftsoptions & FTS_LOGICAL)) /* or finally, logical on */
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|
errx(1, "-delete: insecure options got turned on");
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|
|
|
/* Potentially unsafe - do not accept relative paths whatsoever */
|
|
if (strchr(entry->fts_accpath, '/') != NULL)
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|
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 *option, char ***argvp __unused)
|
|
{
|
|
|
|
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);
|
|
}
|
|
|
|
|
|
/*
|
|
* always_true --
|
|
*
|
|
* Always true, used for -maxdepth, -mindepth, -xdev and -follow
|
|
*/
|
|
int
|
|
f_always_true(PLAN *plan __unused, FTSENT *entry __unused)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* -depth functions --
|
|
*
|
|
* With argument: True if the file is at level n.
|
|
* Without argument: 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_depth(PLAN *plan, FTSENT *entry)
|
|
{
|
|
if (plan->flags & F_DEPTH)
|
|
COMPARE(entry->fts_level, plan->d_data);
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|
else
|
|
return 1;
|
|
}
|
|
|
|
PLAN *
|
|
c_depth(OPTION *option, char ***argvp)
|
|
{
|
|
PLAN *new;
|
|
char *str;
|
|
|
|
new = palloc(option);
|
|
|
|
str = **argvp;
|
|
if (str && !(new->flags & F_DEPTH)) {
|
|
/* skip leading + or - */
|
|
if (*str == '+' || *str == '-')
|
|
str++;
|
|
/* skip sign */
|
|
if (*str == '+' || *str == '-')
|
|
str++;
|
|
if (isdigit(*str))
|
|
new->flags |= F_DEPTH;
|
|
}
|
|
|
|
if (new->flags & F_DEPTH) { /* -depth n */
|
|
char *ndepth;
|
|
|
|
ndepth = nextarg(option, argvp);
|
|
new->d_data = find_parsenum(new, option->name, ndepth, NULL);
|
|
} else { /* -d */
|
|
isdepth = 1;
|
|
}
|
|
|
|
return new;
|
|
}
|
|
|
|
/*
|
|
* -empty functions --
|
|
*
|
|
* True if the file or directory is empty
|
|
*/
|
|
int
|
|
f_empty(PLAN *plan __unused, 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 *option, char ***argvp __unused)
|
|
{
|
|
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 *plan, FTSENT *entry)
|
|
{
|
|
int cnt;
|
|
pid_t pid;
|
|
int status;
|
|
char *file;
|
|
|
|
if (entry == NULL && plan->flags & F_EXECPLUS) {
|
|
if (plan->e_ppos == plan->e_pbnum)
|
|
return (1);
|
|
plan->e_argv[plan->e_ppos] = NULL;
|
|
goto doexec;
|
|
}
|
|
|
|
/* 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_EXECPLUS) {
|
|
if ((plan->e_argv[plan->e_ppos] = strdup(file)) == NULL)
|
|
err(1, NULL);
|
|
plan->e_len[plan->e_ppos] = strlen(file);
|
|
plan->e_psize += plan->e_len[plan->e_ppos];
|
|
if (++plan->e_ppos < plan->e_pnummax &&
|
|
plan->e_psize < plan->e_psizemax)
|
|
return (1);
|
|
plan->e_argv[plan->e_ppos] = NULL;
|
|
} else {
|
|
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]);
|
|
}
|
|
|
|
doexec: 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);
|
|
}
|
|
if (plan->flags & F_EXECPLUS) {
|
|
while (--plan->e_ppos >= plan->e_pbnum)
|
|
free(plan->e_argv[plan->e_ppos]);
|
|
plan->e_ppos = plan->e_pbnum;
|
|
plan->e_psize = plan->e_pbsize;
|
|
}
|
|
pid = waitpid(pid, &status, 0);
|
|
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 *option, char ***argvp)
|
|
{
|
|
PLAN *new; /* node returned */
|
|
long argmax;
|
|
int cnt, i;
|
|
char **argv, **ap, **ep, *p;
|
|
|
|
/* 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 \";\" or \"+\"", option->name);
|
|
if (**ap == ';')
|
|
break;
|
|
if (**ap == '+' && ap != argv && strcmp(*(ap - 1), "{}") == 0) {
|
|
new->flags |= F_EXECPLUS;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ap == argv)
|
|
errx(1, "%s: no command specified", option->name);
|
|
|
|
cnt = ap - *argvp + 1;
|
|
if (new->flags & F_EXECPLUS) {
|
|
new->e_ppos = new->e_pbnum = cnt - 2;
|
|
if ((argmax = sysconf(_SC_ARG_MAX)) == -1) {
|
|
warn("sysconf(_SC_ARG_MAX)");
|
|
argmax = _POSIX_ARG_MAX;
|
|
}
|
|
argmax -= 1024;
|
|
for (ep = environ; *ep != NULL; ep++)
|
|
argmax -= strlen(*ep) + 1 + sizeof(*ep);
|
|
argmax -= 1 + sizeof(*ep);
|
|
new->e_pnummax = argmax / 16;
|
|
argmax -= sizeof(char *) * new->e_pnummax;
|
|
if (argmax <= 0)
|
|
errx(1, "no space for arguments");
|
|
new->e_psizemax = argmax;
|
|
new->e_pbsize = 0;
|
|
cnt += new->e_pnummax + 1;
|
|
new->e_next = lastexecplus;
|
|
lastexecplus = new;
|
|
}
|
|
if ((new->e_argv = malloc(cnt * sizeof(char *))) == NULL)
|
|
err(1, NULL);
|
|
if ((new->e_orig = malloc(cnt * sizeof(char *))) == NULL)
|
|
err(1, NULL);
|
|
if ((new->e_len = malloc(cnt * sizeof(int))) == NULL)
|
|
err(1, NULL);
|
|
|
|
for (argv = *argvp, cnt = 0; argv < ap; ++argv, ++cnt) {
|
|
new->e_orig[cnt] = *argv;
|
|
if (new->flags & F_EXECPLUS)
|
|
new->e_pbsize += strlen(*argv) + 1;
|
|
for (p = *argv; *p; ++p)
|
|
if (!(new->flags & F_EXECPLUS) && p[0] == '{' &&
|
|
p[1] == '}') {
|
|
if ((new->e_argv[cnt] =
|
|
malloc(MAXPATHLEN)) == NULL)
|
|
err(1, NULL);
|
|
new->e_len[cnt] = MAXPATHLEN;
|
|
break;
|
|
}
|
|
if (!*p) {
|
|
new->e_argv[cnt] = *argv;
|
|
new->e_len[cnt] = 0;
|
|
}
|
|
}
|
|
if (new->flags & F_EXECPLUS) {
|
|
new->e_psize = new->e_pbsize;
|
|
cnt--;
|
|
for (i = 0; i < new->e_pnummax; i++) {
|
|
new->e_argv[cnt] = NULL;
|
|
new->e_len[cnt] = 0;
|
|
cnt++;
|
|
}
|
|
argv = ap;
|
|
goto done;
|
|
}
|
|
new->e_argv[cnt] = new->e_orig[cnt] = NULL;
|
|
|
|
done: *argvp = argv + 1;
|
|
return new;
|
|
}
|
|
|
|
/* Finish any pending -exec ... {} + functions. */
|
|
void
|
|
finish_execplus()
|
|
{
|
|
PLAN *p;
|
|
|
|
p = lastexecplus;
|
|
while (p != NULL) {
|
|
(p->execute)(p, NULL);
|
|
p = p->e_next;
|
|
}
|
|
}
|
|
|
|
int
|
|
f_flags(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 *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 *option, char ***argvp __unused)
|
|
{
|
|
ftsoptions &= ~FTS_PHYSICAL;
|
|
ftsoptions |= FTS_LOGICAL;
|
|
|
|
return palloc(option);
|
|
}
|
|
|
|
/*
|
|
* -fstype functions --
|
|
*
|
|
* True if the file is of a certain type.
|
|
*/
|
|
int
|
|
f_fstype(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] = {0,0};
|
|
|
|
if ((plan->flags & F_MTMASK) == F_MTUNKNOWN)
|
|
return 0;
|
|
|
|
/* 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 filesystem,
|
|
* 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;
|
|
case F_MTTYPE:
|
|
return val_type == plan->mt_data;
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
|
|
PLAN *
|
|
c_fstype(OPTION *option, char ***argvp)
|
|
{
|
|
char *fsname;
|
|
PLAN *new;
|
|
struct xvfsconf 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;
|
|
}
|
|
|
|
/*
|
|
* We need to make filesystem checks for filesystems
|
|
* that exists but aren't in the kernel work.
|
|
*/
|
|
fprintf(stderr, "Warning: Unknown filesystem type %s\n", fsname);
|
|
new->flags |= F_MTUNKNOWN;
|
|
return new;
|
|
}
|
|
|
|
/*
|
|
* -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 *plan, FTSENT *entry)
|
|
{
|
|
return entry->fts_statp->st_gid == plan->g_data;
|
|
}
|
|
|
|
PLAN *
|
|
c_group(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 *plan, FTSENT *entry)
|
|
{
|
|
COMPARE(entry->fts_statp->st_ino, plan->i_data);
|
|
}
|
|
|
|
PLAN *
|
|
c_inum(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 *plan, FTSENT *entry)
|
|
{
|
|
COMPARE(entry->fts_statp->st_nlink, plan->l_data);
|
|
}
|
|
|
|
PLAN *
|
|
c_links(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 *plan __unused, FTSENT *entry)
|
|
{
|
|
printlong(entry->fts_path, entry->fts_accpath, entry->fts_statp);
|
|
return 1;
|
|
}
|
|
|
|
PLAN *
|
|
c_ls(OPTION *option, char ***argvp __unused)
|
|
{
|
|
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 *plan, FTSENT *entry)
|
|
{
|
|
return !fnmatch(plan->c_data, entry->fts_name,
|
|
plan->flags & F_IGNCASE ? FNM_CASEFOLD : 0);
|
|
}
|
|
|
|
PLAN *
|
|
c_name(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 *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 if (plan->flags & F_TIME_B)
|
|
return entry->fts_statp->st_birthtime > plan->t_data;
|
|
else
|
|
return entry->fts_statp->st_mtime > plan->t_data;
|
|
}
|
|
|
|
PLAN *
|
|
c_newer(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 *plan __unused, FTSENT *entry)
|
|
{
|
|
return group_from_gid(entry->fts_statp->st_gid, 1) == NULL;
|
|
}
|
|
|
|
PLAN *
|
|
c_nogroup(OPTION *option, char ***argvp __unused)
|
|
{
|
|
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 *plan __unused, FTSENT *entry)
|
|
{
|
|
return user_from_uid(entry->fts_statp->st_uid, 1) == NULL;
|
|
}
|
|
|
|
PLAN *
|
|
c_nouser(OPTION *option, char ***argvp __unused)
|
|
{
|
|
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 *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 *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 *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 == '+') {
|
|
new->flags |= F_ANY;
|
|
++perm;
|
|
}
|
|
|
|
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 pathname to be written to
|
|
* standard output.
|
|
*/
|
|
int
|
|
f_print(PLAN *plan __unused, FTSENT *entry)
|
|
{
|
|
(void)puts(entry->fts_path);
|
|
return 1;
|
|
}
|
|
|
|
PLAN *
|
|
c_print(OPTION *option, char ***argvp __unused)
|
|
{
|
|
isoutput = 1;
|
|
|
|
return palloc(option);
|
|
}
|
|
|
|
/*
|
|
* -print0 functions --
|
|
*
|
|
* Always true, causes the current pathname to be written to
|
|
* standard output followed by a NUL character
|
|
*/
|
|
int
|
|
f_print0(PLAN *plan __unused, 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 *plan __unused, FTSENT *entry)
|
|
{
|
|
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 *plan, FTSENT *entry)
|
|
{
|
|
char *str;
|
|
int 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 *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 *option, char ***argvp __unused)
|
|
{
|
|
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 *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 *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 *plan, FTSENT *entry)
|
|
{
|
|
return (entry->fts_statp->st_mode & S_IFMT) == plan->m_data;
|
|
}
|
|
|
|
PLAN *
|
|
c_type(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 *plan, FTSENT *entry)
|
|
{
|
|
return entry->fts_statp->st_uid == plan->u_data;
|
|
}
|
|
|
|
PLAN *
|
|
c_user(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 descend past directories that have a
|
|
* different device ID (st_dev, see stat() S5.6.2 [POSIX.1])
|
|
*/
|
|
PLAN *
|
|
c_xdev(OPTION *option, char ***argvp __unused)
|
|
{
|
|
ftsoptions |= FTS_XDEV;
|
|
|
|
return palloc(option);
|
|
}
|
|
|
|
/*
|
|
* ( expression ) functions --
|
|
*
|
|
* True if expression is true.
|
|
*/
|
|
int
|
|
f_expr(PLAN *plan, FTSENT *entry)
|
|
{
|
|
PLAN *p;
|
|
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 *plan __unused, FTSENT *entry __unused)
|
|
{
|
|
abort();
|
|
}
|
|
|
|
int
|
|
f_closeparen(PLAN *plan __unused, FTSENT *entry __unused)
|
|
{
|
|
abort();
|
|
}
|
|
|
|
/* c_openparen == c_simple */
|
|
/* c_closeparen == c_simple */
|
|
|
|
/*
|
|
* AND operator. Since AND is implicit, no node is allocated.
|
|
*/
|
|
PLAN *
|
|
c_and(OPTION *option __unused, char ***argvp __unused)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* ! expression functions --
|
|
*
|
|
* Negation of a primary; the unary NOT operator.
|
|
*/
|
|
int
|
|
f_not(PLAN *plan, FTSENT *entry)
|
|
{
|
|
PLAN *p;
|
|
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 *plan, FTSENT *entry)
|
|
{
|
|
PLAN *p;
|
|
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 */
|