PageRenderTime 25ms CodeModel.GetById 12ms app.highlight 10ms RepoModel.GetById 1ms app.codeStats 0ms

/usr.bin/find/main.c

https://bitbucket.org/freebsd/freebsd-head/
C | 167 lines | 112 code | 19 blank | 36 comment | 17 complexity | da28a5bbe30bd8e0a48246181a05f369 MD5 | raw file
  1/*-
  2 * Copyright (c) 1990, 1993, 1994
  3 *	The Regents of the University of California.  All rights reserved.
  4 *
  5 * This code is derived from software contributed to Berkeley by
  6 * Cimarron D. Taylor of the University of California, Berkeley.
  7 *
  8 * Redistribution and use in source and binary forms, with or without
  9 * modification, are permitted provided that the following conditions
 10 * are met:
 11 * 1. Redistributions of source code must retain the above copyright
 12 *    notice, this list of conditions and the following disclaimer.
 13 * 2. Redistributions in binary form must reproduce the above copyright
 14 *    notice, this list of conditions and the following disclaimer in the
 15 *    documentation and/or other materials provided with the distribution.
 16 * 4. Neither the name of the University nor the names of its contributors
 17 *    may be used to endorse or promote products derived from this software
 18 *    without specific prior written permission.
 19 *
 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 30 * SUCH DAMAGE.
 31 */
 32
 33#ifndef lint
 34static const char copyright[] =
 35"@(#) Copyright (c) 1990, 1993, 1994\n\
 36	The Regents of the University of California.  All rights reserved.\n";
 37#endif /* not lint */
 38
 39#ifndef lint
 40#if 0
 41static char sccsid[] = "@(#)main.c	8.4 (Berkeley) 5/4/95";
 42#endif
 43#endif /* not lint */
 44
 45#include <sys/cdefs.h>
 46__FBSDID("$FreeBSD$");
 47
 48#include <sys/types.h>
 49#include <sys/stat.h>
 50
 51#include <err.h>
 52#include <errno.h>
 53#include <fcntl.h>
 54#include <fts.h>
 55#include <locale.h>
 56#include <regex.h>
 57#include <stdio.h>
 58#include <stdlib.h>
 59#include <time.h>
 60#include <unistd.h>
 61
 62#include "find.h"
 63
 64time_t now;			/* time find was run */
 65int dotfd;			/* starting directory */
 66int ftsoptions;			/* options for the ftsopen(3) call */
 67int ignore_readdir_race;	/* ignore readdir race */
 68int isdeprecated;		/* using deprecated syntax */
 69int isdepth;			/* do directories on post-order visit */
 70int isoutput;			/* user specified output operator */
 71int issort;         		/* do hierarchies in lexicographical order */
 72int isxargs;			/* don't permit xargs delimiting chars */
 73int mindepth = -1, maxdepth = -1; /* minimum and maximum depth */
 74int regexp_flags = REG_BASIC;	/* use the "basic" regexp by default*/
 75
 76static void usage(void);
 77
 78int
 79main(int argc, char *argv[])
 80{
 81	char **p, **start;
 82	int Hflag, Lflag, ch;
 83
 84	(void)setlocale(LC_ALL, "");
 85
 86	(void)time(&now);	/* initialize the time-of-day */
 87
 88	p = start = argv;
 89	Hflag = Lflag = 0;
 90	ftsoptions = FTS_NOSTAT | FTS_PHYSICAL;
 91	while ((ch = getopt(argc, argv, "EHLPXdf:sx")) != -1)
 92		switch (ch) {
 93		case 'E':
 94			regexp_flags |= REG_EXTENDED;
 95			break;
 96		case 'H':
 97			Hflag = 1;
 98			Lflag = 0;
 99			break;
100		case 'L':
101			Lflag = 1;
102			Hflag = 0;
103			break;
104		case 'P':
105			Hflag = Lflag = 0;
106			break;
107		case 'X':
108			isxargs = 1;
109			break;
110		case 'd':
111			isdepth = 1;
112			break;
113		case 'f':
114			*p++ = optarg;
115			break;
116		case 's':
117			issort = 1;
118			break;
119		case 'x':
120			ftsoptions |= FTS_XDEV;
121			break;
122		case '?':
123		default:
124			usage();
125		}
126
127	argc -= optind;
128	argv += optind;
129
130	if (Hflag)
131		ftsoptions |= FTS_COMFOLLOW;
132	if (Lflag) {
133		ftsoptions &= ~FTS_PHYSICAL;
134		ftsoptions |= FTS_LOGICAL;
135	}
136
137	/*
138	 * Find first option to delimit the file list.  The first argument
139	 * that starts with a -, or is a ! or a ( must be interpreted as a
140	 * part of the find expression, according to POSIX .2.
141	 */
142	for (; *argv != NULL; *p++ = *argv++) {
143		if (argv[0][0] == '-')
144			break;
145		if ((argv[0][0] == '!' || argv[0][0] == '(') &&
146		    argv[0][1] == '\0')
147			break;
148	}
149
150	if (p == start)
151		usage();
152	*p = NULL;
153
154	if ((dotfd = open(".", O_RDONLY | O_CLOEXEC, 0)) < 0)
155		err(1, ".");
156
157	exit(find_execute(find_formplan(argv), start));
158}
159
160static void
161usage(void)
162{
163	(void)fprintf(stderr, "%s\n%s\n",
164"usage: find [-H | -L | -P] [-EXdsx] [-f path] path ... [expression]",
165"       find [-H | -L | -P] [-EXdsx] -f path [path ...] [expression]");
166	exit(1);
167}