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

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1988 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  *
        !            17:  *     @(#)docopy.c    7.2 (Berkeley) 6/29/88
        !            18:  */
        !            19: 
        !            20: #define        SIZE    10240
        !            21: 
        !            22: docopy(from, to, nrecs)
        !            23:        register int from, to, nrecs;
        !            24: {
        !            25:        register int record, rcc, wcc;
        !            26:        char buf[SIZE];
        !            27: 
        !            28:        for (record = 0;;) {
        !            29:                if (!(rcc = read(from, buffer, SIZE)))
        !            30:                        break;
        !            31:                if (rcc < 0) {
        !            32:                        printf("Record %d: read error, errno=%d\n",
        !            33:                            record, errno);
        !            34:                        break;
        !            35:                }
        !            36:                if (rcc < SIZE)
        !            37:                        printf("Record %d: read short; expected %d, got %d\n",
        !            38:                            record, SIZE, rcc);
        !            39: #ifdef vax
        !            40:                /* For bug in ht driver. */
        !            41:                if (rcc > SIZE)
        !            42:                        rcc = SIZE;
        !            43: #endif
        !            44:                if ((wcc = write(to, buffer, rcc)) < 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:                if (nrecs > 0 && ++record == nrecs)
        !            55:                        break;
        !            56:        }
        !            57:        printf("copy completed: %d records copied\n", record);
        !            58: }

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