import ext2fs lib to prep for new e2fsprogs

1 files changed, 91 insertions, 0 deletions

diff --git a/e2fsprogs/ext2fs/bitops.c b/e2fsprogs/ext2fs/bitops.c
new file mode 100644
index 000000000..207c44d92
--- /dev/null
+++ b/e2fsprogs/ext2fs/bitops.c
@@ -0,0 +1,91 @@
+/*
+ * bitops.c --- Bitmap frobbing code.  See bitops.h for the inlined
+ * 	routines.
+ * 
+ * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
+ */
+
+#include <stdio.h>
+#if HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#include "ext2_fs.h"
+#include "ext2fs.h"
+
+#ifndef _EXT2_HAVE_ASM_BITOPS_
+
+/*
+ * For the benefit of those who are trying to port Linux to another
+ * architecture, here are some C-language equivalents.  You should
+ * recode these in the native assmebly language, if at all possible.
+ *
+ * C language equivalents written by Theodore Ts'o, 9/26/92.
+ * Modified by Pete A. Zaitcev 7/14/95 to be portable to big endian
+ * systems, as well as non-32 bit systems.
+ */
+
+int ext2fs_set_bit(int nr,void * addr)
+{
+	int		mask, retval;
+	unsigned char	*ADDR = (unsigned char *) addr;
+
+	ADDR += nr >> 3;
+	mask = 1 << (nr & 0x07);
+	retval = mask & *ADDR;
+	*ADDR |= mask;
+	return retval;
+}
+
+int ext2fs_clear_bit(int nr, void * addr)
+{
+	int		mask, retval;
+	unsigned char	*ADDR = (unsigned char *) addr;
+
+	ADDR += nr >> 3;
+	mask = 1 << (nr & 0x07);
+	retval = mask & *ADDR;
+	*ADDR &= ~mask;
+	return retval;
+}
+
+int ext2fs_test_bit(int nr, const void * addr)
+{
+	int			mask;
+	const unsigned char	*ADDR = (const unsigned char *) addr;
+
+	ADDR += nr >> 3;
+	mask = 1 << (nr & 0x07);
+	return (mask & *ADDR);
+}
+
+#endif	/* !_EXT2_HAVE_ASM_BITOPS_ */
+
+void ext2fs_warn_bitmap(errcode_t errcode, unsigned long arg,
+			const char *description)
+{
+#ifndef OMIT_COM_ERR
+	if (description)
+		com_err(0, errcode, "#%lu for %s", arg, description);
+	else
+		com_err(0, errcode, "#%lu", arg);
+#endif
+}
+
+void ext2fs_warn_bitmap2(ext2fs_generic_bitmap bitmap,
+			    int code, unsigned long arg)
+{
+#ifndef OMIT_COM_ERR
+	if (bitmap->description)
+		com_err(0, bitmap->base_error_code+code,
+			"#%lu for %s", arg, bitmap->description);
+	else
+		com_err(0, bitmap->base_error_code + code, "#%lu", arg);
+#endif
+}
+