kernel/git/next/linux-next.git/fs/ntfs/reparse.c, branch fs-current

ntfs: support creating Windows native symlinks

2026-06-15T10:39:43+00:00

And introduce the symlink= mount option to configure how symbolic links are created. The option accepts "wsl" or "native", with "wsl" being the default. Signed-off-by: Hyunchul Lee Signed-off-by: Namjae Jeon

ntfs: clean up target name conversion for WSL symlinks

2026-06-15T10:39:41+00:00

WSL symlink target names are stored as narrow NLS/UTF-8 strings on disk. Converting the target name to Unicode in ntfs_symlink and converting it back to NLS in ntfs_reparse_set_wsl_symlink is redundant. Remove this conversion and pass the symname directly to the reparse data setter. Signed-off-by: Hyunchul Lee Signed-off-by: Namjae Jeon

ntfs: support following Windows native symlink with absolute paths

2026-06-15T10:39:37+00:00

Extend reparse-point handling beyond relative symlinks so NTFS can expose the Windows absolute forms used by non-relative symbolic links and junctions. * Store the reparse tag and symlink flags in the inode. * Validate junction payloads, and parse targets from substitute_name. * Add function to rewrite supported Windows absolute path into Linux path relative to the mounted NTFS volume. Signed-off-by: Hyunchul Lee Signed-off-by: Namjae Jeon

ntfs: support following Windows native symlink with relative paths

2026-06-15T10:39:34+00:00

Make ntfs_make_symlink() parse native Windows symbolic link reparse payloads when the SYMLINK_FLAG_RELATIVE bit is set. Implement the following changes: * Add a dedicated on-disk layout definition for symbolic link reparse data. * validate the UTF-16 name ranges before decoding them. * convert the substitute name into the mount's NLS and normalize path separators. Signed-off-by: Hyunchul Lee Signed-off-by: Namjae Jeon

ntfs: fix WSL symlink target leak on reparse failure

2026-04-27T13:29:08+00:00

ntfs_reparse_set_wsl_symlink() converts the symlink target into an allocated NLS string and transfers ownership to ni->target only after ntfs_set_ntfs_reparse_data() succeeds. If setting the reparse data fails, the converted target is left unreferenced and leaks. Free the converted target on the reparse update failure path. Use kfree() for the other local failure path as well, matching the ntfs_ucstonls() allocation contract. Fixes: fc053f05ca28 ("ntfs: add reparse and ea operations") Signed-off-by: DaeMyung Kang Reviewed-by: Hyunchul Lee Signed-off-by: Namjae Jeon

ntfs: add bound checking to ntfs_attr_find

2026-04-07T09:36:05+00:00

Add bound validations in ntfs_attr_find to ensure attribute value offsets and lengths are safe to access. It verifies that resident attributes meet type-specific minimum length requirements and check the mapping_pairs_offset boundaries for non-resident attributes. Signed-off-by: Hyunchul Lee Signed-off-by: Namjae Jeon

ntfs: add reparse and ea operations

2026-02-19T12:50:54+00:00

Implement support for Extended Attributes and Reparse Points, enabling Posix ACL support and, and compatibility with Windows Subsystem for Linux (WSL) metadata. Acked-by: Christoph Hellwig Signed-off-by: Namjae Jeon