ChangeLog, link.c, mkdir.c, newdir.c:

mkdir.c (ext2fs_mkdir): Pass EXT2_FT_DIR flag to ext2fs_link().
  link.c (ext2fs_link): This call now uses the low three bits of the
  	flags parameter to pass the directory filetype information; it will
  	set the directory entry FILETYPE information if the filesystem
  	supports it.
  newdir.c (ext2fs_new_dir_block): If the FILETYPE superblock option is
  	set, then create the '.' and '..' entries with the filetype set to
  	EXT2_FT_DIR.

lib/ext2fs/ChangeLog

@@ -1,3 +1,16 @@
+1999-10-22    <tytso@valinux.com>
+
+	* mkdir.c (ext2fs_mkdir): Pass EXT2_FT_DIR flag to ext2fs_link().
+
+	* link.c (ext2fs_link): This call now uses the low three bits of
+		the flags parameter to pass the directory filetype
+		information; it will set the directory entry FILETYPE
+		information if the filesystem supports it.
+
+	* newdir.c (ext2fs_new_dir_block): If the FILETYPE superblock
+		option is set, then create the '.' and '..' entries with
+		the filetype set to EXT2_FT_DIR.
+
 1999-09-24    <tytso@valinux.com>
 
 	* nt_io.c: New file which supports I/O under Windows NT.

lib/ext2fs/link.c

@@ -29,6 +29,7 @@ struct link_struct  {
 	ino_t		inode;
 	int		flags;
 	int		done;
+	struct ext2fs_sb *sb;
 };	
 
 static int link_proc(struct ext2_dir_entry *dirent,
@@ -84,11 +85,17 @@ static int link_proc(struct ext2_dir_entry *dirent,
 	dirent->inode = ls->inode;
 	dirent->name_len = ls->namelen;
 	strncpy(dirent->name, ls->name, ls->namelen);
+	if (ls->sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_FILETYPE)
+		dirent->name_len |= (ls->flags & 0x7) << 8;
 
 	ls->done++;
 	return DIRENT_ABORT|DIRENT_CHANGED;
 }
 
+/*
+ * Note: the low 3 bits of the flags field are used as the directory
+ * entry filetype.
+ */
 #ifdef __TURBOC__
 #pragma argsused
 #endif
@@ -106,8 +113,9 @@ errcode_t ext2fs_link(ext2_filsys fs, ino_t dir, const char *name, ino_t ino,
 	ls.name = name;
 	ls.namelen = name ? strlen(name) : 0;
 	ls.inode = ino;
-	ls.flags = 0;
+	ls.flags = flags;
 	ls.done = 0;
+	ls.sb = (struct ext2fs_sb *) fs->super;
 
 	retval = ext2fs_dir_iterate(fs, dir, DIRENT_FLAG_INCLUDE_EMPTY,
 				    0, link_proc, &ls);

lib/ext2fs/mkdir.c

@@ -31,6 +31,10 @@
 
 #include "ext2fs.h"
 
+#ifndef EXT2_FT_DIR
+#define EXT2_FT_DIR		2
+#endif
+
 errcode_t ext2fs_mkdir(ext2_filsys fs, ino_t parent, ino_t inum,
 		       const char *name)
 {
@@ -116,7 +120,7 @@ errcode_t ext2fs_mkdir(ext2_filsys fs, ino_t parent, ino_t inum,
 		}
 		if (retval != EXT2_ET_FILE_NOT_FOUND)
 			goto cleanup;
-		retval = ext2fs_link(fs, parent, name, ino, 0);
+		retval = ext2fs_link(fs, parent, name, ino, EXT2_FT_DIR);
 		if (retval)
 			goto cleanup;
 	}

lib/ext2fs/newdir.c

@@ -23,6 +23,10 @@
 
 #include "ext2fs.h"
 
+#ifndef EXT2_FT_DIR
+#define EXT2_FT_DIR		2
+#endif
+
 /*
  * Create new directory block
  */
@@ -33,6 +37,8 @@ errcode_t ext2fs_new_dir_block(ext2_filsys fs, ino_t dir_ino, ino_t parent_ino,
 	errcode_t		retval;
 	char			*buf;
 	int			rec_len;
+	int			filetype = 0;
+	struct ext2fs_sb	*sb;
 
 	EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
 
@@ -44,14 +50,17 @@ errcode_t ext2fs_new_dir_block(ext2_filsys fs, ino_t dir_ino, ino_t parent_ino,
 	dir->rec_len = fs->blocksize;
 
 	if (dir_ino) {
+		sb = (struct ext2fs_sb *) fs->super;
+		if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_FILETYPE)
+			filetype = EXT2_FT_DIR << 8;
 		/*
 		 * Set up entry for '.'
 		 */
 		dir->inode = dir_ino;
-		dir->name_len = 1;
+		dir->name_len = 1 | filetype;
 		dir->name[0] = '.';
-		rec_len = dir->rec_len - EXT2_DIR_REC_LEN(dir->name_len);
+		rec_len = dir->rec_len - EXT2_DIR_REC_LEN(1);
-		dir->rec_len = EXT2_DIR_REC_LEN(dir->name_len);
+		dir->rec_len = EXT2_DIR_REC_LEN(1);
 
 		/*
 		 * Set up entry for '..'
@@ -59,7 +68,7 @@ errcode_t ext2fs_new_dir_block(ext2_filsys fs, ino_t dir_ino, ino_t parent_ino,
 		dir = (struct ext2_dir_entry *) (buf + dir->rec_len);
 		dir->rec_len = rec_len;
 		dir->inode = parent_ino;
-		dir->name_len = 2;
+		dir->name_len = 2 | filetype;
 		dir->name[0] = '.';
 		dir->name[1] = '.';