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main.c revision 1.1.1.2 
      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  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by the University of
     19  *	California, Berkeley and its contributors.
     20  * 4. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  */
     36 
     37 #ifndef lint
     38 char copyright[] =
     39 "@(#) Copyright (c) 1990, 1993, 1994\n\
     40 	The Regents of the University of California.  All rights reserved.\n";
     41 #endif /* not lint */
     42 
     43 #ifndef lint
     44 static char sccsid[] = "@(#)main.c	8.4 (Berkeley) 5/4/95";
     45 #endif /* not lint */
     46 
     47 #include <sys/types.h>
     48 #include <sys/stat.h>
     49 
     50 #include <err.h>
     51 #include <errno.h>
     52 #include <fcntl.h>
     53 #include <fts.h>
     54 #include <stdio.h>
     55 #include <stdlib.h>
     56 #include <time.h>
     57 #include <unistd.h>
     58 
     59 #include "find.h"
     60 
     61 time_t now;			/* time find was run */
     62 int dotfd;			/* starting directory */
     63 int ftsoptions;			/* options for the ftsopen(3) call */
     64 int isdeprecated;		/* using deprecated syntax */
     65 int isdepth;			/* do directories on post-order visit */
     66 int isoutput;			/* user specified output operator */
     67 int isxargs;			/* don't permit xargs delimiting chars */
     68 
     69 static void usage __P((void));
     70 
     71 int
     72 main(argc, argv)
     73 	int argc;
     74 	char *argv[];
     75 {
     76 	register char **p, **start;
     77 	int Hflag, Lflag, Pflag, ch;
     78 
     79 	(void)time(&now);	/* initialize the time-of-day */
     80 
     81 	p = start = argv;
     82 	Hflag = Lflag = Pflag = 0;
     83 	ftsoptions = FTS_NOSTAT | FTS_PHYSICAL;
     84 	while ((ch = getopt(argc, argv, "HLPXdf:x")) != EOF)
     85 		switch (ch) {
     86 		case 'H':
     87 			Hflag = 1;
     88 			Lflag = Pflag = 0;
     89 			break;
     90 		case 'L':
     91 			Lflag = 1;
     92 			Hflag = Pflag = 0;
     93 			break;
     94 		case 'P':
     95 			Pflag = 1;
     96 			Hflag = Lflag = 0;
     97 			break;
     98 		case 'X':
     99 			isxargs = 1;
    100 			break;
    101 		case 'd':
    102 			isdepth = 1;
    103 			break;
    104 		case 'f':
    105 			*p++ = optarg;
    106 			break;
    107 		case 'x':
    108 			ftsoptions |= FTS_XDEV;
    109 			break;
    110 		case '?':
    111 		default:
    112 			break;
    113 		}
    114 
    115 	argc -= optind;
    116 	argv += optind;
    117 
    118 	if (Hflag)
    119 		ftsoptions |= FTS_COMFOLLOW;
    120 	if (Lflag) {
    121 		ftsoptions &= ~FTS_PHYSICAL;
    122 		ftsoptions |= FTS_LOGICAL;
    123 	}
    124 
    125 	/*
    126 	 * Find first option to delimit the file list.  The first argument
    127 	 * that starts with a -, or is a ! or a ( must be interpreted as a
    128 	 * part of the find expression, according to POSIX .2.
    129 	 */
    130 	for (; *argv != NULL; *p++ = *argv++) {
    131 		if (argv[0][0] == '-')
    132 			break;
    133 		if ((argv[0][0] == '!' || argv[0][0] == '(') &&
    134 		    argv[0][1] == '\0')
    135 			break;
    136 	}
    137 
    138 	if (p == start)
    139 		usage();
    140 	*p = NULL;
    141 
    142 	if ((dotfd = open(".", O_RDONLY, 0)) < 0)
    143 		err(1, ".");
    144 
    145 	exit(find_execute(find_formplan(argv), start));
    146 }
    147 
    148 static void
    149 usage()
    150 {
    151 	(void)fprintf(stderr,
    152 "usage: find [-H | -L | -P] [-Xdx] [-f file] [file ...] [expression]\n");
    153 	exit(1);
    154 }
    155