usr.bin/find/main.c

   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  * @(#) Copyright (c) 1990, 1993, 1994 The Regents of the University of California.  All rights reserved.
  33  * @(#)main.c   8.4 (Berkeley) 5/4/95
  34  * $FreeBSD: src/usr.bin/find/main.c,v 1.23 2011/12/10 18:11:06 ed Exp $
  35  */
  36
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39
  40 #include <err.h>
  41 #include <errno.h>
  42 #include <fcntl.h>
  43 #include <fts.h>
  44 #include <locale.h>
  45 #include <regex.h>
  46 #include <stdio.h>
  47 #include <stdlib.h>
  48 #include <time.h>
  49 #include <unistd.h>
  50
  51 #include "find.h"
  52
  53 time_t now;                     /* time find was run */
  54 int dotfd;                      /* starting directory */
  55 int ftsoptions;                 /* options for the ftsopen(3) call */
  56 int isdeprecated;               /* using deprecated syntax */
  57 int isdepth;                    /* do directories on post-order visit */
  58 int isoutput;                   /* user specified output operator */
  59 int issort;                     /* do hierarchies in lexicographical order */
  60 int isxargs;                    /* don't permit xargs delimiting chars */
  61 int mindepth = -1, maxdepth = -1; /* minimum and maximum depth */
  62 int regexp_flags = REG_BASIC;   /* use the "basic" regexp by default*/
  63
  64 static void usage(void);
  65
  66 int
  67 main(int argc, char *argv[])
  68 {
  69         char **p, **start;
  70         int Hflag, Lflag, ch;
  71
  72         setlocale(LC_ALL, "");
  73
  74         time(&now);     /* initialize the time-of-day */
  75
  76         p = start = argv;
  77         Hflag = Lflag = 0;
  78         ftsoptions = FTS_NOSTAT | FTS_PHYSICAL;
  79         while ((ch = getopt(argc, argv, "+EHLPXdf:sx")) != -1)
  80                 switch (ch) {
  81                 case 'E':
  82                         regexp_flags |= REG_EXTENDED;
  83                         break;
  84                 case 'H':
  85                         Hflag = 1;
  86                         Lflag = 0;
  87                         break;
  88                 case 'L':
  89                         Lflag = 1;
  90                         Hflag = 0;
  91                         break;
  92                 case 'P':
  93                         Hflag = Lflag = 0;
  94                         break;
  95                 case 'X':
  96                         isxargs = 1;
  97                         break;
  98                 case 'd':
  99                         isdepth = 1;
 100                         break;
 101                 case 'f':
 102                         *p++ = optarg;
 103                         break;
 104                 case 's':
 105                         issort = 1;
 106                         break;
 107                 case 'x':
 108                         ftsoptions |= FTS_XDEV;
 109                         break;
 110                 case '?':
 111                 default:
 112                         usage();
 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(void)
 150 {
 151         fprintf(stderr, "%s\n%s\n",
 152 "usage: find [-H | -L | -P] [-EXdsx] [-f path] path ... [expression]",
 153 "       find [-H | -L | -P] [-EXdsx] -f path [path ...] [expression]");
 154         exit(1);
 155 }