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Annotation of 43BSDReno/sys/hpstand/copy.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution is only permitted until one year after the first shipment
        !             6:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
        !             7:  * binary forms are permitted provided that: (1) source distributions retain
        !             8:  * this entire copyright notice and comment, and (2) distributions including
        !             9:  * binaries display the following acknowledgement:  This product includes
        !            10:  * software developed by the University of California, Berkeley and its
        !            11:  * contributors'' in the documentation or other materials provided with the
        !            12:  * distribution and in all advertising materials mentioning features or use
        !            13:  * of this software.  Neither the name of the University nor the names of
        !            14:  * its contributors may be used to endorse or promote products derived from
        !            15:  * this software without specific prior written permission.
        !            16:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            17:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            18:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            19:  *
        !            20:  *     @(#)copy.c      7.1 (Berkeley) 5/8/90
        !            21:  */
        !            22: 
        !            23: /*
        !            24:  * Copy from to in 10K units.
        !            25:  * Intended for use in system
        !            26:  * installation.
        !            27:  */
        !            28: main()
        !            29: {
        !            30:        int from, to;
        !            31:        char fbuf[50], tbuf[50];
        !            32:        char buffer[10240];
        !            33:        register int record;
        !            34:        extern int errno;
        !            35: 
        !            36:        from = getdev("From", fbuf, 0);
        !            37:        to = getdev("To", tbuf, 1);
        !            38:        for (record = 0; ; record++) {
        !            39:                int rcc, wcc;
        !            40: 
        !            41:                rcc = read(from, buffer, sizeof (buffer));
        !            42:                if (rcc == 0)
        !            43:                        break;
        !            44:                if (rcc < 0) {
        !            45:                        printf("Record %d: read error, errno=%d\n",
        !            46:                                record, errno);
        !            47:                        break;
        !            48:                }
        !            49:                if (rcc < sizeof (buffer))
        !            50:                        printf("Record %d: read short; expected %d, got %d\n",
        !            51:                                record, sizeof (buffer), rcc);
        !            52:                /*
        !            53:                 * For bug in ht driver.
        !            54:                 */
        !            55:                if (rcc > sizeof (buffer))
        !            56:                        rcc = sizeof (buffer);
        !            57:                wcc = write(to, buffer, rcc);
        !            58:                if (wcc < 0) {
        !            59:                        printf("Record %d: write error: errno=%d\n",
        !            60:                                record, errno);
        !            61:                        break;
        !            62:                }
        !            63:                if (wcc < rcc) {
        !            64:                        printf("Record %d: write short; expected %d, got %d\n",
        !            65:                                record, rcc, wcc);
        !            66:                        break;
        !            67:                }
        !            68:        }
        !            69:        printf("Copy completed: %d records copied\n", record);
        !            70:        /* can't call exit here */
        !            71: }
        !            72: 
        !            73: getdev(prompt, buf, mode)
        !            74:        char *prompt, *buf;
        !            75:        int mode;
        !            76: {
        !            77:        register int i;
        !            78: 
        !            79:        do {
        !            80:                printf("%s: ", prompt);
        !            81:                gets(buf);
        !            82:                i = open(buf, mode);
        !            83:        } while (i <= 0);
        !            84:        return (i);
        !            85: }

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