1 files changed, 93 insertions, 0 deletions
diff --git a/lib/ext2fs/tst_byteswap.c b/lib/ext2fs/tst_byteswap.c
new file mode 100644
index 0000000..c500cae
--- /dev/null
+++ b/lib/ext2fs/tst_byteswap.c
@@ -0,0 +1,93 @@
+/*
+ * This testing program makes sure the byteswap functions work
+ *
+ * Copyright (C) 2000 by Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Library
+ * General Public License, version 2.
+ * %End-Header%
+ */
+
+#include "config.h"
+#include <stdio.h>
+#include <string.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <fcntl.h>
+#include <time.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#if HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+#include "ext2_fs.h"
+#include "ext2fs.h"
+
+__u16 test1[] = {
+	0x0001, 0x0100,
+	0x1234, 0x3412,
+	0xff00, 0x00ff,
+	0x4000, 0x0040,
+	0xfeff, 0xfffe,
+	0x0000, 0x0000
+	};
+
+__u32 test2[] = {
+	0x00000001, 0x01000000,
+	0x80000000, 0x00000080,
+	0x12345678, 0x78563412,
+	0xffff0000, 0x0000ffff,
+	0x00ff0000, 0x0000ff00,
+	0xff000000, 0x000000ff,
+	0x00000000, 0x00000000
+	};
+
+int main(int argc, char **argv)
+{
+	int	i;
+	int	errors = 0;
+
+	printf("Testing ext2fs_swab16\n");
+	i=0;
+	do {
+		printf("swab16(0x%04x) = 0x%04x\n", test1[i],
+		       ext2fs_swab16(test1[i]));
+		if (ext2fs_swab16(test1[i]) != test1[i+1]) {
+			printf("Error!!!   %04x != %04x\n",
+			       ext2fs_swab16(test1[i]), test1[i+1]);
+			errors++;
+		}
+		if (ext2fs_swab16(test1[i+1]) != test1[i]) {
+			printf("Error!!!   %04x != %04x\n",
+			       ext2fs_swab16(test1[i+1]), test1[i]);
+			errors++;
+		}
+		i += 2;
+	} while (test1[i] != 0);
+
+	printf("Testing ext2fs_swab32\n");
+	i = 0;
+	do {
+		printf("swab32(0x%08x) = 0x%08x\n", test2[i],
+		       ext2fs_swab32(test2[i]));
+		if (ext2fs_swab32(test2[i]) != test2[i+1]) {
+			printf("Error!!!   %04x != %04x\n",
+			       ext2fs_swab32(test2[i]), test2[i+1]);
+			errors++;
+		}
+		if (ext2fs_swab32(test2[i+1]) != test2[i]) {
+			printf("Error!!!   %04x != %04x\n",
+			       ext2fs_swab32(test2[i+1]), test2[i]);
+			errors++;
+		}
+		i += 2;
+	} while (test2[i] != 0);
+
+	if (!errors)
+		printf("No errors found in the byteswap implementation!\n");
+
+	return errors;
+}