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

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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