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Annotation of src/usr.bin/find/main.c, Revision 1.1.1.1

1.1       deraadt     1: /*-
                      2:  * Copyright (c) 1990, 1993
                      3:  *     The Regents of the University of California.  All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. All advertising materials mentioning features or use of this software
                     14:  *    must display the following acknowledgement:
                     15:  *     This product includes software developed by the University of
                     16:  *     California, Berkeley and its contributors.
                     17:  * 4. Neither the name of the University nor the names of its contributors
                     18:  *    may be used to endorse or promote products derived from this software
                     19:  *    without specific prior written permission.
                     20:  *
                     21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     31:  * SUCH DAMAGE.
                     32:  */
                     33:
                     34: #ifndef lint
                     35: /*static char sccsid[] = "@(#)main.c   8.1 (Berkeley) 6/6/93";*/
                     36: static char rcsid[] = "$Id: main.c,v 1.5 1994/01/24 23:08:15 jtc Exp $";
                     37: #endif /* not lint */
                     38:
                     39: #include <sys/types.h>
                     40: #include <sys/stat.h>
                     41:
                     42: #include <err.h>
                     43: #include <errno.h>
                     44: #include <fcntl.h>
                     45: #include <fts.h>
                     46: #include <stdio.h>
                     47: #include <stdlib.h>
                     48: #include <time.h>
                     49:
                     50: #include "find.h"
                     51:
                     52: time_t now;                    /* time find was run */
                     53: int dotfd;                     /* starting directory */
                     54: int ftsoptions;                        /* options for the ftsopen(3) call */
                     55: int isdeprecated;              /* using deprecated syntax */
                     56: int isdepth;                   /* do directories on post-order visit */
                     57: int isoutput;                  /* user specified output operator */
                     58: int isxargs;                   /* don't permit xargs delimiting chars */
                     59:
                     60: static void usage __P((void));
                     61:
                     62: int
                     63: main(argc, argv)
                     64:        int argc;
                     65:        char *argv[];
                     66: {
                     67:        register char **p, **start;
                     68:        int ch;
                     69:
                     70:        (void)time(&now);       /* initialize the time-of-day */
                     71:
                     72:        p = start = argv;
                     73:        ftsoptions = FTS_NOSTAT|FTS_PHYSICAL;
                     74:        while ((ch = getopt(argc, argv, "Hdf:hXx")) != EOF)
                     75:                switch(ch) {
                     76:                case 'H':
                     77:                        ftsoptions |= FTS_COMFOLLOW;
                     78:                        break;
                     79:                case 'd':
                     80:                        isdepth = 1;
                     81:                        break;
                     82:                case 'f':
                     83:                        *p++ = optarg;
                     84:                        break;
                     85:                case 'h':
                     86:                        ftsoptions &= ~FTS_PHYSICAL;
                     87:                        ftsoptions |= FTS_LOGICAL;
                     88:                        break;
                     89:                case 'X':
                     90:                        isxargs = 1;
                     91:                        break;
                     92:                case 'x':
                     93:                        ftsoptions &= ~FTS_NOSTAT;
                     94:                        ftsoptions |= FTS_XDEV;
                     95:                        break;
                     96:                case '?':
                     97:                default:
                     98:                        break;
                     99:                }
                    100:
                    101:        argc -= optind;
                    102:        argv += optind;
                    103:
                    104:        /* The first argument that starts with a -, or is a ! or a (, and all
                    105:         * subsequent arguments shall be interpreted as an expression ...
                    106:         * (POSIX.2).
                    107:         */
                    108:        while (*argv) {
                    109:                if (**argv == '-' ||
                    110:                    ((**argv == '!' || **argv == '(') && (*argv)[1] == '\0'))
                    111:                        break;
                    112:                *p++ = *argv++;
                    113:        }
                    114:
                    115:        if (p == start)
                    116:                usage();
                    117:        *p = NULL;
                    118:
                    119:        if ((dotfd = open(".", O_RDONLY, 0)) < 0)
                    120:                err(1, ".:");
                    121:
                    122:        find_execute(find_formplan(argv), start);
                    123:        exit(0);
                    124: }
                    125:
                    126: static void
                    127: usage()
                    128: {
                    129:        (void)fprintf(stderr,
                    130:            "usage: find [-HdhXx] [-f file] [file ...] expression\n");
                    131:        exit(1);
                    132: }