Annotation of Net2/arch/i386/floppy/cp/cp.c, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 1991 The Regents of the University of California.
        !             3:  * 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:  *     @(#)cp.c        5.1 (Berkeley) 5/9/91
        !            34:  */
        !            35: 
        !            36: #include <fcntl.h>
        !            37: 
        !            38: int eval;
        !            39: 
        !            40: main(argc, argv)
        !            41:        int argc;
        !            42:        char **argv;
        !            43: {
        !            44:        register int from, to, nr;
        !            45:        char buf[2048];
        !            46: 
        !            47:        if (*++argv && **argv == '-') {
        !            48:                err("no options available", 0);
        !            49:                _exit(1);
        !            50:        }
        !            51:        if (argc != 3) {
        !            52:                err("usage: cp file1 file2", 0);
        !            53:                _exit(1);
        !            54:        }
        !            55:        if ((from = open(argv[0], O_RDONLY, 0)) < 0)
        !            56:                err(argv[0], 1);
        !            57:        else if ((to = open(argv[1], O_CREAT|O_TRUNC|O_WRONLY, 0666)) < 0)
        !            58:                err(argv[1], 1);
        !            59:        else {
        !            60:                while ((nr = read(from, buf, sizeof(buf))) > 0)
        !            61:                        if (write(to, buf, nr) != nr) {
        !            62:                                err(argv[1], 1);
        !            63:                                break;
        !            64:                        }
        !            65:                if (nr == -1)
        !            66:                        err(argv[0], 1);
        !            67:        }
        !            68:        _exit(eval);
        !            69: }
        !            70: 
        !            71: #define        PROGNAME        "cp: "
        !            72: #include "errfunction"

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