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  * 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 #if 0
  45 static char sccsid[] = "@(#)main.c      8.4 (Berkeley) 5/4/95";
  46 #else
  47 static const char rcsid[] =
  48   "$FreeBSD: src/usr.bin/find/main.c,v 1.9.6.2 2001/02/25 21:56:59 knu Exp $";
  49 #endif
  50 #endif /* not lint */
  51
  52 #include <sys/types.h>
  53 #include <sys/stat.h>
  54
  55 #include <err.h>
  56 #include <errno.h>
  57 #include <fcntl.h>
  58 #include <fts.h>
  59 #include <locale.h>
  60 #include <regex.h>
  61 #include <stdio.h>
  62 #include <stdlib.h>
  63 #include <time.h>
  64 #include <unistd.h>
  65
  66 #include "find.h"
  67
  68 time_t now;                     /* time find was run */
  69 int dotfd;                      /* starting directory */
  70 int ftsoptions;                 /* options for the ftsopen(3) call */
  71 int isdeprecated;               /* using deprecated syntax */
  72 int isdepth;                    /* do directories on post-order visit */
  73 int isoutput;                   /* user specified output operator */
  74 int issort;                     /* do hierarchies in lexicographical order */
  75 int isxargs;                    /* don't permit xargs delimiting chars */
  76 int mindepth = -1, maxdepth = -1; /* minimum and maximum depth */
  77 int regexp_flags = REG_BASIC;   /* use the "basic" regexp by default*/
  78
  79 static void usage __P((void));
  80
  81 int
  82 main(argc, argv)
  83         int argc;
  84         char *argv[];
  85 {
  86         register char **p, **start;
  87         int Hflag, Lflag, ch;
  88
  89         (void)setlocale(LC_ALL, "");
  90
  91         (void)time(&now);       /* initialize the time-of-day */
  92
  93         p = start = argv;
  94         Hflag = Lflag = 0;
  95         ftsoptions = FTS_NOSTAT | FTS_PHYSICAL;
  96         while ((ch = getopt(argc, argv, "EHLPXdf:sx")) != -1)
  97                 switch (ch) {
  98                 case 'E':
  99                         regexp_flags |= REG_EXTENDED;
 100                         break;
 101                 case 'H':
 102                         Hflag = 1;
 103                         Lflag = 0;
 104                         break;
 105                 case 'L':
 106                         Lflag = 1;
 107                         Hflag = 0;
 108                         break;
 109                 case 'P':
 110                         Hflag = Lflag = 0;
 111                         break;
 112                 case 'X':
 113                         isxargs = 1;
 114                         break;
 115                 case 'd':
 116                         isdepth = 1;
 117                         break;
 118                 case 'f':
 119                         *p++ = optarg;
 120                         break;
 121                 case 's':
 122                         issort = 1;
 123                         break;
 124                 case 'x':
 125                         ftsoptions |= FTS_XDEV;
 126                         break;
 127                 case '?':
 128                 default:
 129                         break;
 130                 }
 131
 132         argc -= optind;
 133         argv += optind;
 134
 135         if (Hflag)
 136                 ftsoptions |= FTS_COMFOLLOW;
 137         if (Lflag) {
 138                 ftsoptions &= ~FTS_PHYSICAL;
 139                 ftsoptions |= FTS_LOGICAL;
 140         }
 141
 142         /*
 143          * Find first option to delimit the file list.  The first argument
 144          * that starts with a -, or is a ! or a ( must be interpreted as a
 145          * part of the find expression, according to POSIX .2.
 146          */
 147         for (; *argv != NULL; *p++ = *argv++) {
 148                 if (argv[0][0] == '-')
 149                         break;
 150                 if ((argv[0][0] == '!' || argv[0][0] == '(') &&
 151                     argv[0][1] == '\0')
 152                         break;
 153         }
 154
 155         if (p == start)
 156                 usage();
 157         *p = NULL;
 158
 159         if ((dotfd = open(".", O_RDONLY, 0)) < 0)
 160                 err(1, ".");
 161
 162         exit(find_execute(find_formplan(argv), start));
 163 }
 164
 165 static void
 166 usage()
 167 {
 168         (void)fprintf(stderr,
 169 "usage: find [-H | -L | -P] [-EXdsx] [-f file] [file ...] [expression]\n");
 170         exit(1);
 171 }