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Annotation of 43BSDReno/sys/stand/docopy.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1988 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:  *     @(#)docopy.c    7.3 (Berkeley) 6/28/90
                     21:  */
                     22: 
                     23: #define        SIZE    10240
                     24: 
                     25: docopy(from, to, nrecs)
                     26:        register int from, to, nrecs;
                     27: {
                     28:        register int record, rcc, wcc;
                     29:        char buf[SIZE];
                     30: 
                     31:        for (record = 0;;) {
                     32:                if (!(rcc = read(from, buffer, SIZE)))
                     33:                        break;
                     34:                if (rcc < 0) {
                     35:                        printf("Record %d: read error, errno=%d\n",
                     36:                            record, errno);
                     37:                        break;
                     38:                }
                     39:                if (rcc < SIZE)
                     40:                        printf("Record %d: read short; expected %d, got %d\n",
                     41:                            record, SIZE, rcc);
                     42: #ifdef vax
                     43:                /* For bug in ht driver. */
                     44:                if (rcc > SIZE)
                     45:                        rcc = SIZE;
                     46: #endif
                     47:                if ((wcc = write(to, buffer, rcc)) < 0) {
                     48:                        printf("Record %d: write error: errno=%d\n",
                     49:                            record, errno);
                     50:                        break;
                     51:                }
                     52:                if (wcc < rcc) {
                     53:                        printf("Record %d: write short; expected %d, got %d\n",
                     54:                            record, rcc, wcc);
                     55:                        break;
                     56:                }
                     57:                if (nrecs > 0 && ++record == nrecs)
                     58:                        break;
                     59:        }
                     60:        printf("copy completed: %d records copied\n", record);
                     61: }

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