fs/ntfs3: Fix directory element type detection

Calling stat() from userspace correctly identified junctions in an NTFS
partition as symlinks, but using readdir() and iterating through the
directory containing the same junction did not identify the junction
as a symlink.

When emitting directory contents, check FILE_ATTRIBUTE_REPARSE_POINT
attribute to detect junctions and report them as links.

Signed-off-by: Gabriel Marcano <gabemarcano@yahoo.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

diff --git a/fs/ntfs3/dir.c b/fs/ntfs3/dir.c
index 063a6654199bc078074e2b85f34ce1f31d93a197..ec0566b322d5d0b4b36533a3a218671bb0ff7b02 100644 (file)
--- a/fs/ntfs3/dir.c
+++ b/fs/ntfs3/dir.c
@@ -309,7 +309,11 @@ static inline int ntfs_filldir(struct ntfs_sb_info *sbi, struct ntfs_inode *ni,
                return 0;
        }
 
-       dt_type = (fname->dup.fa & FILE_ATTRIBUTE_DIRECTORY) ? DT_DIR : DT_REG;
+       /* NTFS: symlinks are "dir + reparse" or "file + reparse" */
+       if (fname->dup.fa & FILE_ATTRIBUTE_REPARSE_POINT)
+               dt_type = DT_LNK;
+       else
+               dt_type = (fname->dup.fa & FILE_ATTRIBUTE_DIRECTORY) ? DT_DIR : DT_REG;
 
        return !dir_emit(ctx, (s8 *)name, name_len, ino, dt_type);
 }