posix style job control - new process groups

[unix-history] / 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 e354ed3..faead5b 100644 (file)
--- 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()
 {
  */
 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;
                        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);

 }
 }