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

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986, 1988 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      7.5 (Berkeley) 5/24/88
        !             7:  */
        !             8: 
        !             9: #define        BSIZE   10240
        !            10: 
        !            11: /*
        !            12:  * Copy from from to to.  Intended for use in system installation.
        !            13:  */
        !            14: main()
        !            15: {
        !            16:        extern int errno;
        !            17:        register int from, to, record, rcc, wcc;
        !            18:        char buf[BSIZE];
        !            19: 
        !            20:        from = getfile("From", 0);
        !            21:        to = getfile("To", 1);
        !            22:        for (record = 0;; ++record) {
        !            23:                if (!(rcc = read(from, buf, BSIZE)))
        !            24:                        break;
        !            25:                if (rcc < 0) {
        !            26:                        printf("Record %d: read error, errno=%d\n",
        !            27:                            record, errno);
        !            28:                        break;
        !            29:                }
        !            30:                if (!record && rcc != BSIZE) {
        !            31:                        rcc = BSIZE;
        !            32:                        printf("Block size set from input; %d bytes\n", BSIZE);
        !            33:                }
        !            34:                if (rcc < BSIZE)
        !            35:                        printf("Record %d: read short; expected %d, got %d\n",
        !            36:                            record, BSIZE, rcc);
        !            37: #ifdef vax
        !            38:                /* For bug in ht driver. */
        !            39:                if (rcc > BSIZE)
        !            40:                        rcc = BSIZE;
        !            41: #endif
        !            42:                if ((wcc = write(to, buf, rcc)) < 0) {
        !            43:                        printf("Record %d: write error: errno=%d\n",
        !            44:                            record, errno);
        !            45:                        break;
        !            46:                }
        !            47:                if (wcc < rcc) {
        !            48:                        printf("Record %d: write short; expected %d, got %d\n",
        !            49:                            record, rcc, wcc);
        !            50:                        break;
        !            51:                }
        !            52:        }
        !            53:        printf("copy completed: %d records copied\n", record);
        !            54: }

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