1 /*- 2 * Copyright (c) 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char copyright[] = 10 "@(#) Copyright (c) 1993\n\ 11 The Regents of the University of California. All rights reserved.\n"; 12 #endif /* not lint */ 13 14 #ifndef lint 15 static char sccsid[] = "@(#)copy.c 8.1 (Berkeley) 06/11/93"; 16 #endif /* not lint */ 17 18 #define BSIZE 10240 19 20 /* 21 * Copy from from to to. Intended for use in system installation. 22 */ 23 main() 24 { 25 extern int errno; 26 register int from, to, record, rcc, wcc, bsize = BSIZE; 27 char buf[BSIZE]; 28 29 from = getfile("From", 0); 30 to = getfile("To", 1); 31 for (record = 0;; ++record) { 32 if (!(rcc = read(from, buf, bsize))) 33 break; 34 if (rcc < 0) { 35 printf("Record %d: read error, errno=%d\n", 36 record, errno); 37 break; 38 } 39 if (rcc != bsize) { 40 if (record == 0) { 41 bsize = rcc; 42 printf("Block size set from input; %d bytes\n", 43 bsize); 44 } else 45 printf("Record %d: read short; expected %d, got %d\n", 46 record, bsize, rcc); 47 } 48 #ifdef vax 49 /* For bug in ht driver. */ 50 if (rcc > bsize) 51 rcc = bsize; 52 #endif 53 if ((wcc = write(to, buf, rcc)) < 0) { 54 printf("Record %d: write error: errno=%d\n", 55 record, errno); 56 break; 57 } 58 if (wcc < rcc) { 59 printf("Record %d: write short; expected %d, got %d\n", 60 record, rcc, wcc); 61 break; 62 } 63 } 64 printf("copy completed: %d records copied\n", record); 65 } 66