1 files changed, 84 insertions, 0 deletions
diff --git a/unix/boot/bootlib/osfcopy.c b/unix/boot/bootlib/osfcopy.c
new file mode 100644
index 00000000..037d6eff
--- /dev/null
+++ b/unix/boot/bootlib/osfcopy.c
@@ -0,0 +1,84 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include "bootlib.h"
+
+extern	int  os_access (char *fname, int mode, int type);
+
+
+/* OS_FCOPY -- Copy a file.  Used by RTAR to resolve links.
+ */
+int
+os_fcopy (
+  char	*oldfile,
+  char	*newfile
+)
+{
+	XCHAR	buf[SZ_FBUF];
+	XINT	status,	junk, maxch = SZ_FBUF, mode = 0, in, out, n, nw;
+
+	extern  int ZOPNTX(), ZGETTX(), ZCLSTX(), ZPUTTX();
+
+
+	if (os_access (oldfile,0,0) == NO)
+	    return (ERR);
+
+	if (os_access (oldfile, 0, TEXT_FILE) == YES) {
+	    if (bdebug)
+		fprintf (stderr, "copy text file '%s' -> '%s'\n",
+		    oldfile, newfile);
+
+	    mode = READ_ONLY;
+	    ZOPNTX ((PKCHAR *)vfn2osfn(oldfile,0), &mode, &in);
+	    if (in == XERR)
+		return (ERR);
+
+	    mode = NEW_FILE;
+	    ZOPNTX ((PKCHAR *)vfn2osfn(newfile,1), &mode, &out);
+	    if (out == XERR) {
+		ZCLSTX (&in, &status);
+		return (ERR);
+	    }
+
+	    while (ZGETTX (&in, buf, &maxch, &n), n != XEOF) {
+		if (n != XERR)
+		    ZPUTTX (&out, buf, &n, &status);
+		if (n == XERR || status == XERR) {
+		    ZCLSTX (&in, &junk);
+		    ZCLSTX (&out, &junk);
+		    return (ERR);
+		}
+	    }
+
+	    ZCLSTX (&in, &status);
+	    ZCLSTX (&out, &status);
+
+	    return (status);
+
+	} else {
+	    if (bdebug)
+		fprintf (stderr, "copy binary file `%s' -> `%s'\n",
+		    oldfile, newfile);
+
+	    if ((in = open (vfn2osfn(oldfile,0), 0)) == ERR)
+		return (ERR);
+	    if ((out = creat (vfn2osfn(newfile,1), 0644)) == ERR) {
+		close (in);
+		return (ERR);
+	    }
+
+	    while ((n = read (in, (char *)buf, SZ_FBUF)) > 0)
+		nw = write (out, (char *)buf, n);
+
+	    close (in);
+	    close (out);
+	    if (n < 0)
+		return (ERR);
+	}
+
+	return (ERR);
+}