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  * 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  * @(#) Copyright (c) 1990, 1993, 1994 The Regents of the University of California.  All rights reserved.
  37  * @(#)main.c   8.4 (Berkeley) 5/4/95
  38  * $FreeBSD: src/usr.bin/find/main.c,v 1.15 2003/06/14 13:00:21 markm Exp $
  39  * $DragonFly: src/usr.bin/find/main.c,v 1.6 2005/03/14 12:48:57 joerg Exp $
  40  */
  41
  42 #include <sys/types.h>
  43 #include <sys/stat.h>
  44
  45 #include <err.h>
  46 #include <errno.h>
  47 #include <fcntl.h>
  48 #include <fts.h>
  49 #include <locale.h>
  50 #include <regex.h>
  51 #include <stdio.h>
  52 #include <stdlib.h>
  53 #include <time.h>
  54 #include <unistd.h>
  55
  56 #include "find.h"
  57
  58 time_t now;                     /* time find was run */
  59 int dotfd;                      /* starting directory */
  60 int ftsoptions;                 /* options for the ftsopen(3) call */
  61 int isdeprecated;               /* using deprecated syntax */
  62 int isdepth;                    /* do directories on post-order visit */
  63 int isoutput;                   /* user specified output operator */
  64 int issort;                     /* do hierarchies in lexicographical order */
  65 int isxargs;                    /* don't permit xargs delimiting chars */
  66 int mindepth = -1, maxdepth = -1; /* minimum and maximum depth */
  67 int regexp_flags = REG_BASIC;   /* use the "basic" regexp by default*/
  68
  69 static void usage(void);
  70
  71 int
  72 main(int argc, char *argv[])
  73 {
  74         char **p, **start;
  75         int Hflag, Lflag, ch;
  76
  77         setlocale(LC_ALL, "");
  78
  79         time(&now);     /* initialize the time-of-day */
  80
  81         p = start = argv;
  82         Hflag = Lflag = 0;
  83         ftsoptions = FTS_NOSTAT | FTS_PHYSICAL;
  84         while ((ch = getopt(argc, argv, "+EHLPXdf:sx")) != -1)
  85                 switch (ch) {
  86                 case 'E':
  87                         regexp_flags |= REG_EXTENDED;
  88                         break;
  89                 case 'H':
  90                         Hflag = 1;
  91                         Lflag = 0;
  92                         break;
  93                 case 'L':
  94                         Lflag = 1;
  95                         Hflag = 0;
  96                         break;
  97                 case 'P':
  98                         Hflag = Lflag = 0;
  99                         break;
 100                 case 'X':
 101                         isxargs = 1;
 102                         break;
 103                 case 'd':
 104                         isdepth = 1;
 105                         break;
 106                 case 'f':
 107                         *p++ = optarg;
 108                         break;
 109                 case 's':
 110                         issort = 1;
 111                         break;
 112                 case 'x':
 113                         ftsoptions |= FTS_XDEV;
 114                         break;
 115                 case '?':
 116                 default:
 117                         break;
 118                 }
 119
 120         argc -= optind;
 121         argv += optind;
 122
 123         if (Hflag)
 124                 ftsoptions |= FTS_COMFOLLOW;
 125         if (Lflag) {
 126                 ftsoptions &= ~FTS_PHYSICAL;
 127                 ftsoptions |= FTS_LOGICAL;
 128         }
 129
 130         /*
 131          * Find first option to delimit the file list.  The first argument
 132          * that starts with a -, or is a ! or a ( must be interpreted as a
 133          * part of the find expression, according to POSIX .2.
 134          */
 135         for (; *argv != NULL; *p++ = *argv++) {
 136                 if (argv[0][0] == '-')
 137                         break;
 138                 if ((argv[0][0] == '!' || argv[0][0] == '(') &&
 139                     argv[0][1] == '\0')
 140                         break;
 141         }
 142
 143         if (p == start)
 144                 usage();
 145         *p = NULL;
 146
 147         if ((dotfd = open(".", O_RDONLY, 0)) < 0)
 148                 err(1, ".");
 149
 150         exit(find_execute(find_formplan(argv), start));
 151 }
 152
 153 static void
 154 usage(void)
 155 {
 156         fprintf(stderr,
 157 "usage: find [-H | -L | -P] [-EXdsx] [-f file] [file ...] [expression]\n");
 158         exit(1);
 159 }