fake out support for POSIX -H and -L options since busybox cp dereferences everything by default

coreutils/cp.c

@@ -42,7 +42,7 @@
 #include "libcoreutils/coreutils.h"
 
 /* WARNING!! ORDER IS IMPORTANT!! */
-static const char cp_opts[] = "pdRfiarP";
+static const char cp_opts[] = "pdRfiarPHL";
 
 extern int cp_main(int argc, char **argv)
 {
@@ -79,6 +79,14 @@ extern int cp_main(int argc, char **argv)
 		 */
 		flags |= FILEUTILS_DEREFERENCE;
 	}
+	/* Default behavior of cp is to dereference, so we don't have to do
+	 * anything special when we are given -L.
+	 * The behavior of -H is *almost* like -L, but not quite, so let's
+	 * just ignore it too for fun.
+	if (flags & 256 || flags & 512) {
+		;
+	}
+	*/
 
 	flags ^= FILEUTILS_DEREFERENCE;		/* The sense of this flag was reversed. */
 

include/usage.h

@@ -205,6 +205,7 @@
 	"\n" \
 	"\t-a\tSame as -dpR\n" \
 	"\t-d,-P\tPreserves links\n" \
+	"\t-H,-L\tDereference all symlinks (implied by default)\n" \
 	"\t-p\tPreserves file attributes if possible\n" \
 	"\t-f\tforce (implied; ignored) - always set\n" \
 	"\t-i\tinteractive, prompt before overwrite\n" \

libbb/copy_file.c

@@ -54,7 +54,8 @@ int copy_file(const char *source, const char *dest, int flags)
 		}
 	} else {
 		if (source_stat.st_dev == dest_stat.st_dev &&
-			source_stat.st_ino == dest_stat.st_ino) {
+			source_stat.st_ino == dest_stat.st_ino)
+		{
 			bb_error_msg("`%s' and `%s' are the same file", source, dest);
 			return -1;
 		}