import ext2fs lib to prep for new e2fsprogs

1 files changed, 72 insertions, 0 deletions

diff --git a/e2fsprogs/ext2fs/newdir.c b/e2fsprogs/ext2fs/newdir.c
new file mode 100644
index 0000000..3904d91
--- /dev/null
+++ b/e2fsprogs/ext2fs/newdir.c
@@ -0,0 +1,72 @@
+/*
+ * newdir.c --- create a new directory block
+ * 
+ * Copyright (C) 1994, 1995 Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
+ */
+
+#include <stdio.h>
+#include <string.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include "ext2_fs.h"
+#include "ext2fs.h"
+
+#ifndef EXT2_FT_DIR
+#define EXT2_FT_DIR		2
+#endif
+
+/*
+ * Create new directory block
+ */
+errcode_t ext2fs_new_dir_block(ext2_filsys fs, ext2_ino_t dir_ino,
+			       ext2_ino_t parent_ino, char **block)
+{
+	struct ext2_dir_entry 	*dir = NULL;
+	errcode_t		retval;
+	char			*buf;
+	int			rec_len;
+	int			filetype = 0;
+
+	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
+
+	retval = ext2fs_get_mem(fs->blocksize, &buf);
+	if (retval)
+		return retval;
+	memset(buf, 0, fs->blocksize);
+	dir = (struct ext2_dir_entry *) buf;
+	dir->rec_len = fs->blocksize;
+
+	if (dir_ino) {
+		if (fs->super->s_feature_incompat &
+		    EXT2_FEATURE_INCOMPAT_FILETYPE)
+			filetype = EXT2_FT_DIR << 8;
+		/*
+		 * Set up entry for '.'
+		 */
+		dir->inode = dir_ino;
+		dir->name_len = 1 | filetype;
+		dir->name[0] = '.';
+		rec_len = dir->rec_len - EXT2_DIR_REC_LEN(1);
+		dir->rec_len = EXT2_DIR_REC_LEN(1);
+
+		/*
+		 * Set up entry for '..'
+		 */
+		dir = (struct ext2_dir_entry *) (buf + dir->rec_len);
+		dir->rec_len = rec_len;
+		dir->inode = parent_ino;
+		dir->name_len = 2 | filetype;
+		dir->name[0] = '.';
+		dir->name[1] = '.';
+		
+	}
+	*block = buf;
+	return 0;
+}