X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/blobdiff_plain/4fb3673cfc5d5ace662280ea005ae37130c7ce57..0cc0777f661116576a286d1d644dd0338074d41c:/usr/src/sys/stand.att/copy.c

diff --git a/usr/src/sys/stand.att/copy.c b/usr/src/sys/stand.att/copy.c
index e354ed396b..faead5bb5f 100644
--- a/usr/src/sys/stand.att/copy.c
+++ b/usr/src/sys/stand.att/copy.c
@@ -1,39 +1,54 @@
-/*	copy.c	4.1	83/02/13	*/
+/*
+ * Copyright (c) 1982, 1986, 1988 Regents of the University of California.
+ * All rights reserved.  The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ *
+ *	@(#)copy.c	7.5 (Berkeley) %G%
+ */
+
+#define	BSIZE	10240
 
 /*
- * Copy from to in 10K units.
- * Intended for use in system
- * installation.
+ * Copy from from to to.  Intended for use in system installation.
  */
 main()
 {
-	int from, to;
-	char fbuf[50], tbuf[50];
-	char buffer[10240];
-	register int i;
+	extern int errno;
+	register int from, to, record, rcc, wcc;
+	char buf[BSIZE];
 
-	from = getdev("From", fbuf, 0);
-	to = getdev("To", tbuf, 1);
-	for (;;) {
-		i = read(from, buffer, sizeof (buffer));
-		if (i != sizeof (buffer))
+	from = getfile("From", 0);
+	to = getfile("To", 1);
+	for (record = 0;; ++record) {
+		if (!(rcc = read(from, buf, BSIZE)))
+			break;
+		if (rcc < 0) {
+			printf("Record %d: read error, errno=%d\n",
+			    record, errno);
+			break;
+		}
+		if (!record && rcc != BSIZE) {
+			rcc = BSIZE;
+			printf("Block size set from input; %d bytes\n", BSIZE);
+		}
+		if (rcc < BSIZE)
+			printf("Record %d: read short; expected %d, got %d\n",
+			    record, BSIZE, rcc);
+#ifdef vax
+		/* For bug in ht driver. */
+		if (rcc > BSIZE)
+			rcc = BSIZE;
+#endif
+		if ((wcc = write(to, buf, rcc)) < 0) {
+			printf("Record %d: write error: errno=%d\n",
+			    record, errno);
 			break;
-		(void) write(to, buffer, i);
+		}
+		if (wcc < rcc) {
+			printf("Record %d: write short; expected %d, got %d\n",
+			    record, rcc, wcc);
+			break;
+		}
 	}
-	printf("Copy completed\n");
-	/* can't call exit here */
-}
-
-getdev(prompt, buf, mode)
-	char *prompt, *buf;
-	int mode;
-{
-	register int i;
-
-	do {
-		printf("%s: ", prompt);
-		gets(buf);
-		i = open(buf, mode);
-	} while (i <= 0);
-	return (i);
+	printf("copy completed: %d records copied\n", record);
 }