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Annotation of 43BSD/sys/stand/copy.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)copy.c      7.1 (Berkeley) 6/5/86
        !             7:  */
        !             8: 
        !             9: /*
        !            10:  * Copy from to in 10K units.
        !            11:  * Intended for use in system
        !            12:  * installation.
        !            13:  */
        !            14: main()
        !            15: {
        !            16:        int from, to;
        !            17:        char fbuf[50], tbuf[50];
        !            18:        char buffer[10240];
        !            19:        register int record;
        !            20:        extern int errno;
        !            21: 
        !            22:        from = getdev("From", fbuf, 0);
        !            23:        to = getdev("To", tbuf, 1);
        !            24:        for (record = 0; ; record++) {
        !            25:                int rcc, wcc;
        !            26: 
        !            27:                rcc = read(from, buffer, sizeof (buffer));
        !            28:                if (rcc == 0)
        !            29:                        break;
        !            30:                if (rcc < 0) {
        !            31:                        printf("Record %d: read error, errno=%d\n",
        !            32:                                record, errno);
        !            33:                        break;
        !            34:                }
        !            35:                if (rcc < sizeof (buffer))
        !            36:                        printf("Record %d: read short; expected %d, got %d\n",
        !            37:                                record, sizeof (buffer), rcc);
        !            38:                /*
        !            39:                 * For bug in ht driver.
        !            40:                 */
        !            41:                if (rcc > sizeof (buffer))
        !            42:                        rcc = sizeof (buffer);
        !            43:                wcc = write(to, buffer, rcc);
        !            44:                if (wcc < 0) {
        !            45:                        printf("Record %d: write error: errno=%d\n",
        !            46:                                record, errno);
        !            47:                        break;
        !            48:                }
        !            49:                if (wcc < rcc) {
        !            50:                        printf("Record %d: write short; expected %d, got %d\n",
        !            51:                                record, rcc, wcc);
        !            52:                        break;
        !            53:                }
        !            54:        }
        !            55:        printf("Copy completed: %d records copied\n", record);
        !            56:        /* can't call exit here */
        !            57: }
        !            58: 
        !            59: getdev(prompt, buf, mode)
        !            60:        char *prompt, *buf;
        !            61:        int mode;
        !            62: {
        !            63:        register int i;
        !            64: 
        !            65:        do {
        !            66:                printf("%s: ", prompt);
        !            67:                gets(buf);
        !            68:                i = open(buf, mode);
        !            69:        } while (i <= 0);
        !            70:        return (i);
        !            71: }

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