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And introduce the symlink=<value> 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 <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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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 <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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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 <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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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 <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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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 <charsyam@gmail.com>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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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 <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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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 <hch@lst.de>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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