find/main.c

   1 /*      $NetBSD: main.c,v 1.10 1998/02/10 21:52:51 cgd Exp $    */
   2
   3 /*-
   4  * Copyright (c) 1990, 1993, 1994
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Cimarron D. Taylor of the University of California, Berkeley.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38
  39 #include <sys/cdefs.h>
  40 #ifndef lint
  41 #if 0
  42 static char sccsid[] = "@(#)main.c      8.4 (Berkeley) 5/4/95";
  43 #else
  44 __COPYRIGHT("@(#) Copyright (c) 1990, 1993, 1994\n\
  45         The Regents of the University of California.  All rights reserved.\n");
  46 __RCSID("$NetBSD: main.c,v 1.10 1998/02/10 21:52:51 cgd Exp $");
  47 #endif
  48 #endif /* not lint */
  49
  50 #include <sys/types.h>
  51 #include <sys/stat.h>
  52
  53 #include <err.h>
  54 #include <errno.h>
  55 #include <fcntl.h>
  56 #include <fts.h>
  57 #include <stdio.h>
  58 #include <stdlib.h>
  59 #include <time.h>
  60 #include <unistd.h>
  61
  62 #include "find.h"
  63
  64 time_t now;                     /* time find was run */
  65 int dotfd;                      /* starting directory */
  66 int ftsoptions;                 /* options for the ftsopen(3) call */
  67 int isdeprecated;               /* using deprecated syntax */
  68 int isdepth;                    /* do directories on post-order visit */
  69 int isoutput;                   /* user specified output operator */
  70 int isxargs;                    /* don't permit xargs delimiting chars */
  71
  72 int main __P((int, char **));
  73 static void usage __P((void));
  74
  75 int
  76 main(argc, argv)
  77         int argc;
  78         char *argv[];
  79 {
  80         char **p, **start;
  81         int ch;
  82
  83         (void)time(&now);       /* initialize the time-of-day */
  84
  85         /* array to hold dir list.  at most (argc - 1) elements. */
  86         p = start = alloca(argc * sizeof (char *));
  87
  88         ftsoptions = FTS_NOSTAT | FTS_PHYSICAL;
  89         while ((ch = getopt(argc, argv, "HLPXdf:x")) != EOF)
  90                 switch(ch) {
  91                 case 'H':
  92                         ftsoptions |= FTS_COMFOLLOW;
  93 #if 0   /* XXX necessary? */
  94                         ftsoptions &= ~FTS_LOGICAL;
  95 #endif
  96                         break;
  97                 case 'L':
  98                         ftsoptions &= ~FTS_COMFOLLOW;
  99                         ftsoptions |= FTS_LOGICAL;
 100                         break;
 101                 case 'P':
 102                         ftsoptions &= ~(FTS_COMFOLLOW|FTS_LOGICAL);
 103                         ftsoptions |= FTS_PHYSICAL;
 104                         break;
 105                 case 'X':
 106                         isxargs = 1;
 107                         break;
 108                 case 'd':
 109                         isdepth = 1;
 110                         break;
 111                 case 'f':
 112                         *p++ = optarg;
 113                         break;
 114                 case 'h':
 115                         ftsoptions &= ~FTS_PHYSICAL;
 116                         ftsoptions |= FTS_LOGICAL;
 117                         break;
 118                 case 'x':
 119                         ftsoptions |= FTS_XDEV;
 120                         break;
 121                 case '?':
 122                 default:
 123                         break;
 124                 }
 125
 126         argc -= optind;
 127         argv += optind;
 128
 129         /*
 130          * Find first option to delimit the file list.  The first argument
 131          * that starts with a -, or is a ! or a ( must be interpreted as a
 132          * part of the find expression, according to POSIX .2.
 133          */
 134         for (; *argv != NULL; *p++ = *argv++) {
 135                 if (argv[0][0] == '-')
 136                         break;
 137                 if ((argv[0][0] == '!' || argv[0][0] == '(') &&
 138                     argv[0][1] == '\0')
 139                         break;
 140         }
 141
 142         if (p == start)
 143                 usage();
 144         *p = NULL;
 145
 146         if ((dotfd = open(".", O_RDONLY, 0)) < 0)
 147                 err(1, ".");
 148
 149         exit(find_execute(find_formplan(argv), start));
 150 }
 151
 152 static void
 153 usage()
 154 {
 155         (void)fprintf(stderr,
 156 "usage: find [-H | -L | -P] [-Xdhx] [-f file] [file ...] [expression]\n");
 157         exit(1);
 158 }