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| author | Pali Rohár <pali@kernel.org> | 2024-09-28 13:21:24 +0200 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2024-11-25 14:50:32 -0600 |
| commit | 06a7adf318a30bdcfa1222ed6d2640e6bb266d7b (patch) | |
| tree | d4a9b8e78573968694d74dc60544188cd8a7d639 /fs/smb/common | |
| parent | dd26bc067e44956e43a273e6e0a9c1fc4ed32cb7 (diff) | |
| download | linux-next-06a7adf318a30bdcfa1222ed6d2640e6bb266d7b.tar.gz linux-next-06a7adf318a30bdcfa1222ed6d2640e6bb266d7b.zip | |
cifs: Add support for parsing WSL-style symlinks
Linux CIFS client currently does not implement readlink() for WSL-style
symlinks. It is only able to detect that file is of WSL-style symlink, but
is not able to read target symlink location.
Add this missing functionality and implement support for parsing content of
WSL-style symlink.
The important note is that symlink target location stored for WSL symlink
reparse point (IO_REPARSE_TAG_LX_SYMLINK) is in UTF-8 encoding instead of
UTF-16 (which is used in whole SMB protocol and also in all other symlink
styles). So for proper locale/cp support it is needed to do conversion from
UTF-8 to local_nls.
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/smb/common')
| -rw-r--r-- | fs/smb/common/smb2pdu.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/smb/common/smb2pdu.h b/fs/smb/common/smb2pdu.h index 9f272cc8f566..3c7c706c797d 100644 --- a/fs/smb/common/smb2pdu.h +++ b/fs/smb/common/smb2pdu.h @@ -1552,6 +1552,15 @@ struct reparse_symlink_data_buffer { /* See MS-FSCC 2.1.2.6 and cifspdu.h for struct reparse_posix_data */ +/* For IO_REPARSE_TAG_LX_SYMLINK */ +struct reparse_wsl_symlink_data_buffer { + __le32 ReparseTag; + __le16 ReparseDataLength; + __u16 Reserved; + __le32 Flags; + __u8 PathBuffer[]; /* Variable Length UTF-8 string without nul-term */ +} __packed; + struct validate_negotiate_info_req { __le32 Capabilities; __u8 Guid[SMB2_CLIENT_GUID_SIZE]; |